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WO2018008367A1 - Detection apparatus - Google Patents

Detection apparatus Download PDF

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Publication number
WO2018008367A1
WO2018008367A1 PCT/JP2017/022407 JP2017022407W WO2018008367A1 WO 2018008367 A1 WO2018008367 A1 WO 2018008367A1 JP 2017022407 W JP2017022407 W JP 2017022407W WO 2018008367 A1 WO2018008367 A1 WO 2018008367A1
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WO
WIPO (PCT)
Prior art keywords
elastic member
contact
shape
detection device
pair
Prior art date
Application number
PCT/JP2017/022407
Other languages
French (fr)
Japanese (ja)
Inventor
貴之 藤田
修 角川
Original Assignee
アルプス電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプス電気株式会社 filed Critical アルプス電気株式会社
Publication of WO2018008367A1 publication Critical patent/WO2018008367A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress

Definitions

  • the present invention relates to a detection device, and more particularly, to a detection device using an elastic member having pressure-sensitive conductivity as an input detection member.
  • Patent Document 1 An input device having such a detection device is disclosed in Patent Document 1.
  • a pen-type input device 900 disclosed in Patent Document 1 will be described with reference to FIG.
  • FIG. 13 is a longitudinal sectional view showing an embodiment of the pen-type input device 900.
  • a writing unit 400A is provided at one end of a cylindrical main body 910, and an erasing unit 400B is provided at the other end of the main body 910.
  • the writing unit 400 ⁇ / b> A of the pen-type input device 400 includes a pen point movable part (first contact member) 920, a pen point pressure sensor (first input detection member) 440, and a pen point spring (first) in the main body 910.
  • Elastic member) 960 is a pen point movable part (first contact member) 920, a pen point pressure sensor (first input detection member) 440, and a pen point spring (first) in the main body 910.
  • Elastic member 960.
  • the erasing unit 400B includes a pen butt movable part (second contact member) 930, a pen butt pressure sensor (second input detection member) 450, and a pen butt spring (second elastic member) 970 inside the main body 910. And have.
  • the nib pressure sensor 440 is elastically deformed according to the spring force of the nib spring 960 compressed by the nib movable part 920 being pressed, and has a characteristic of changing a resistance value according to the elastic deformation amount. It consists of a conductive elastomer sensor. Therefore, the nib pressure sensor 440 detects a pressure value corresponding to the spring force of the nib spring 960 by a writing operation.
  • the pen butt pressure sensor 450 has a characteristic of elastically deforming according to the spring force of the pen butt spring 970 compressed by the pen butt movable unit 930 being pressed, and changing the resistance value according to the amount of elastic deformation. It consists of a pressure sensitive conductive elastomer sensor. Therefore, the pen butt pressure sensor 450 detects a pressure value corresponding to the spring force of the pen butt spring 970 by the erasing operation.
  • a pen tip pressure sensor 440 is used as a detection device for detecting a pressure value applied to the pen tip movable unit 920 and performing a switching operation.
  • a detection device such as the nib pressure sensor 440
  • an elastic member having pressure-sensitive conductivity, a so-called conductive rubber is used as the detection member, and when the pressure is applied, the elastic member compresses, An input operation is detected according to the compression amount.
  • the elastic member since the elastic member is deformed when it is compressed, its resistance value changes with deformation. Since the output voltage changes as the resistance value changes, the input operation is detected by detecting the change in the output voltage.
  • a pair of electrode portions is provided at both ends of the elastic member, and a resistance value existing between the pair of electrode portions is measured during a switching operation. And the presence or absence of switching operation
  • the shape of the elastic material used as the detection member of the detection device conventionally, a cylindrical or prismatic shape is used, and the surface that receives pressure is a flat surface that is the top surface or the bottom surface of the cylinder or prism. Yes.
  • the shape of the elastic material is such a shape, when pressure is applied to the elastic material, the width in the direction perpendicular to the direction in which the pressure of the elastic material is applied is substantially constant regardless of the pressure value. It remains.
  • the contact area which contacts the electrode part of the elastic material which receives a pressure does not change.
  • the present invention has been made in view of such a state of the art, and increases the ratio of the amount of change in the resistance value between the pair of electrode portions, and has a sufficient margin for the threshold value for determining the presence or absence of the switching operation.
  • a detection device that can be made to operate.
  • a detection device of the present invention includes an elastic member having pressure-sensitive conductivity, and a pair of electrode portions that have conductivity and sandwich the elastic member between contact surfaces that are in contact with the elastic member.
  • the pair of electrode portions are movable relative to a first direction in which the contact surfaces face each other in contact with the elastic member, and are cut along a plane orthogonal to the first direction.
  • the cross-sectional area of the elastic member is characterized in that it changes from one contact surface side toward the other contact surface side.
  • the elastic member has a shape in which the cross-sectional area changes from one contact surface side toward the other contact surface side, so that when the elastic member is pressed, The contact area in the contact region between the elastic member and the electrode portion is increased. For this reason, the resistance value between the pair of electrode portions of the elastic member is reduced, whereby the rate of change of the resistance value can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
  • the elastic member has a columnar shape, and the pair of electrode portions are arranged on the column surface side of the elastic member.
  • the electrode portion is arranged in the direction orthogonal to the column surface side of the elastic member, that is, the extending direction of the columnar elastic member, so that the contact area between the electrode portion and the elastic member The contact area at can be easily expanded.
  • the elastic member has a feature that a cross-sectional shape of the elastic member is a circle or an ellipse when cut along a plane parallel to the first direction and perpendicular to a direction in which the columnar shape extends. Have.
  • the cross-sectional shape of the elastic member is a circle or an ellipse, the contact area in the contact region between each of the pair of electrode portions and the elastic member can be efficiently expanded.
  • the cross-sectional shape of the elastic member when cut along a plane parallel to the first direction and perpendicular to the extending direction of the columnar shape is a semicircle or a semi-ellipse. Has characteristics.
  • the cross-sectional shape of the elastic member is a semicircle or a semi-ellipse
  • one surface of the elastic member is a flat surface, and the elastic member can be easily placed in the device. .
  • the elastic member has a feature that the cross-sectional shape of the elastic member is a polygon when cut along a plane parallel to the first direction and perpendicular to the direction in which the columnar shape extends. .
  • the elastic member has a polygonal cross-sectional shape in the detection device configured in this way, at least one surface of the elastic member can be a flat surface, and the elastic member can be easily placed in the device.
  • At least one of the portions of the elastic member facing the electrode portion is characterized by being substantially spherical.
  • the contact area in the contact region between the at least one electrode portion and the elastic member can be improved more efficiently. Can be enlarged.
  • the elastic member is spherical.
  • the elastic member is spherical, the two spherical portions of the elastic member can be opposed to the pair of electrode portions, respectively. Therefore, the contact area in the contact region between each of the pair of electrode portions and the elastic member can be further efficiently increased.
  • the elastic member has a hemispherical shape having a flat portion, and one of the electrode portions faces the flat portion.
  • the elastic member is a hemisphere having a flat surface
  • one surface of the elastic member is a flat surface, and the elastic member can be easily placed in the device.
  • the elastic member has a weight shape having a bottom surface and a vertex, and one of the electrode portions is opposed to the bottom surface, and the other is opposed to the vertex.
  • the elastic member since the elastic member has a weight shape, the contact area in the contact region between the electrode portion and the apex of the elastic member can be expanded more efficiently. Further, since the bottom surface side of the elastic member is a flat surface, the elastic member can be easily arranged in the apparatus.
  • the elastic member has such a shape that the cross-sectional area changes from one contact surface side to the other contact surface side, when the elastic member is pressed, The contact area in the contact area with the electrode portion is expanded. For this reason, the resistance value between the pair of electrode portions of the elastic member is reduced, whereby the rate of change of the resistance value can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
  • An object of the present invention is a detection device using an elastic member having pressure-sensitive conductivity as an input detection member.
  • the input detection member is deformed by being pressed, and the resistance value of the input detection member is also changed in accordance with a change in the pressing amount (shape change). Therefore, a threshold value is provided for the resistance value of the input detection member, and it can be used like a switch device by identifying whether the resistance value is larger or smaller than the threshold value. Alternatively, it can be used like a switching device by providing a threshold for the output voltage.
  • the detection device of the present invention is a switch that can obtain an analog switch feeling by utilizing the characteristics of an elastic member, such as a switch device used in a game or the like, a switch device used in a toilet seat, etc. Applied to the device.
  • the application of the detection apparatus of the present invention is not limited to the embodiments described below, and can be changed as appropriate. In the description of each drawing, when it is described as the right side, the left side, the upper side, and the lower side, these indicate the + X side, the ⁇ X side, the + Z side, and the Z side, respectively.
  • FIG. 1 is a perspective view showing an external appearance of the detection apparatus 100.
  • the detection device 100 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10.
  • the electrode unit 20 includes a first electrode unit 21 disposed on the upper side of the elastic member 10 and a second electrode unit 22 disposed on the lower side of the elastic member 10.
  • the pair of electrode portions 20, that is, the first electrode portion 21 and the second electrode portion 22 are arranged in a direction (vertical direction) orthogonal to the extending direction (Y direction) of the elastic member 10.
  • the detection device 100 is a switch device that can perform a switching operation by detecting a change in the resistance value of the elastic member 10 due to an input operation.
  • the detection device 100 is configured to perform a switching operation by pressing one of the electrode units 20, for example, an operation unit (not shown) disposed on the first electrode unit 21. .
  • the first electrode portion 21 and the second electrode portion 22 have conductivity and have a contact surface 21a and a contact surface 22a that are in contact with the elastic member 10, respectively.
  • the contact surface 21a and the contact 2a are flat surfaces.
  • the first electrode portion 21 and the second electrode portion 22 sandwich the elastic member 10 from above and below with the contact surface 21a and the contact surface 22a. Note that the contact surface 21a and the contact surface 22a are preferably arranged so as to be parallel to each other.
  • the elastic member 10 is formed of a material having pressure-sensitive conductivity.
  • This material having pressure-sensitive conductivity is formed by kneading carbon particles in a liquid elastomer having elasticity, and has a resistance value R ⁇ b> 1 between the pair of electrode portions 20.
  • the elastic member 10 is a plane (XY plane) orthogonal to the first direction D1, which is the direction in which the contact surface 21a and the contact surface 22a face each other in a state where the electrode portion 20 is in contact with the elastic member 10. ),
  • the cross-sectional area S1 of the elastic member 10 is changed so as to change from the one contact surface 21a side (+ Z side) toward the other contact surface 22a side ( ⁇ Z side).
  • the elastic member 10 in the detection apparatus 100 of 1st Embodiment is columnar.
  • a plane that is parallel to the first direction D1 and perpendicular to the direction in which the columnar shape extends (Y direction), that is, a plane that is orthogonal to the direction in which the elastic member 10 extends (Y direction).
  • the cross-sectional shape at (XZ plane) is circular. Therefore, the elastic member 10 is formed in a cylindrical shape.
  • the elastic member 10 formed in a columnar shape is referred to as an elastic member 11.
  • the column surface (curved surface) portion of the cylindrical elastic member 11 is sandwiched between the contact surface 21a and the contact surface 22a.
  • the elastic member 10 has a circular cross-sectional shape cut along a plane (XZ plane) parallel to the first direction D1 and perpendicular to the direction in which the columnar shape extends (Y direction).
  • the cross-sectional shape may be an elliptical shape.
  • the pair of electrode portions 20 (the first electrode portion 21 and the second electrode portion 22) described above are relatively in the first direction D1, which is a direction in which the contact surface 21a and the contact surface 22a face each other in contact with the elastic member 10. Can be moved. At the same time, the resistance value R ⁇ b> 1 of the elastic member 10 between the pair of electrode portions 20 described above can be changed with the movement of the pair of electrode portions 20.
  • the elastic member 10 is formed in a cylindrical shape
  • the cross section cut along a plane (XY plane) orthogonal to the first direction D1 is, for example, the first electrode portion 21 and the second electrode portion 22.
  • the cross-sectional area at the intermediate point is the largest, and the cross-sectional area becomes smaller as it approaches the first electrode part 21 and the second electrode part 22. That is, the elastic member 10 according to the first embodiment has a cross-sectional area S1 cut along a plane (XY plane) orthogonal to the first direction D1 described above, so that one of the contact surfaces (of the first electrode portion 21).
  • the shape changes from the contact surface 21a) side toward the other contact surface (contact surface 22a of the second electrode portion 22) side.
  • FIG. 2 is a schematic view of the detection apparatus 100 as viewed from the front ( ⁇ Y side), showing changes in the contact area 25 and the elastic member 10 (elastic member 11) before and after the pressing operation, and FIG. FIG. 2 (b) shows a state in the middle of pressing the detection device 100, and FIG. 2 (c) shows a state in which the detection device 100 is pressed to the maximum. Shows the state.
  • FIG. 3 is a schematic view seen from above (+ Z side) showing changes in the contact region 25 and the elastic member 10 (elastic member 11) before and after the pressing operation, and FIG. FIG.
  • FIG. 3B shows a state before the detection device 100 is being pressed
  • FIG. 3C shows a state where the detection device 100 is pressed to the maximum. Yes.
  • FIG. 4 is an example of a circuit diagram illustrating the circuit 30 of the detection device 100 including the fixed resistor 31.
  • the pair of electrode portions 20 are in the upper and lower contact regions 25 of the elastic member 11 before the detection device 100 is pressed. It is in contact with the elastic member 11.
  • the shape of the elastic member 11 viewed from the front ( ⁇ Y side) at this time remains circular.
  • region 25 is a contact location of the contact surface 21a and the contact surface 22a formed by the column surface (curved surface) of the elastic member 11 which is a column shape, and is flat, it is ideally linear (line contact) ).
  • the pressure is applied to the pair of electrode portions 20 even before the detection device 100 is pressed. Therefore, the shape seen from the upper surface (+ Z side) is a rectangle having a narrow side with a short side as the extending direction (Y direction) of the elastic member 11 becomes a long side as shown in FIG. ing.
  • the shape seen from the upper surface (+ Z side) of the entire elastic member 11 is a rectangle extending in the extending direction of the elastic member 11.
  • the pair of electrode portions 20 compress the member 11 as shown in FIG.
  • the shape of the compressed elastic member 11 viewed from the front ( ⁇ Y side) becomes an elliptical shape that expands in the left-right direction.
  • the width dimension of the contact area 25 viewed from the front ( ⁇ Y side) after the detection device 100 is pressed is longer than the width before the detection device 100 is pressed.
  • the shape of the compressed elastic member 11 viewed from the front ( ⁇ Y side) becomes an elliptical shape expanding in the left-right direction
  • the rectangular shape of the elastic member 11 viewed from the upper surface (+ Z side) is As shown to 3 (b), it spreads in the direction (left-right direction) orthogonal to the extending direction of the elastic member 11. As shown in FIG.
  • the contact area 25 is viewed from the upper surface (+ Z side), as shown in FIG. 3B, before the width of the rectangular short side is pressed. Larger than That is, the contact area S2 of the contact region 25 is increased.
  • the pair of electrode portions 20 (the first electrode portion 21 and the second electrode).
  • the part 22) further compresses the elastic member 11 from the vertical direction.
  • the shape of the compressed elastic member 11 viewed from the front ( ⁇ Y side) becomes a flat elliptical shape further expanding in the left-right direction.
  • the contact region 25 changes its shape as viewed from above (+ Z side), and the width of the rectangle is further increased as shown in FIG. . That is, the contact area S2 of the contact region 25 is further increased.
  • the shape viewed from the front ( ⁇ Y side) of the compressed elastic member 11 becomes an elliptical shape spreading in the left-right direction, and the distance between the pair of electrode portions 20 is closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 11 becomes small, and the rate of change of the resistance value R1 becomes larger.
  • the circuit When the detection device 100 is used as a switch device that can be switched on and off, for example, as shown in FIG. 4, the circuit has a resistance value R 0 in one of the electrode portions 20, that is, the first electrode portion 21.
  • the fixed resistor 31 having one end is connected, and the other of the electrode portions 20, that is, the second electrode portion 22 is grounded.
  • a predetermined power supply voltage Vcc is applied to the other end of the fixed resistor 31, and the output voltage Vout is extracted from the first electrode unit 21.
  • the output voltage Vout a voltage obtained by dividing the power supply voltage Vcc by the resistance value R0 and the resistance value R1 is taken out.
  • the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 changes as the elastic member 10 is sandwiched between the pair of electrode portions 20 and deformed. That is, when the elastic member 10 is sandwiched and pressed between the pair of electrode portions 20, the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 decreases.
  • the resistance value R1 and the resistance value R0 between the pair of electrode portions 20 of the elastic member 10 when the detection device 100 is switched from OFF to ON are set according to an output voltage (threshold voltage) serving as a threshold for switching ON / OFF. Is done. That is, on / off switching can be performed using the output voltage when the distance between the pair of electrode portions 20 becomes a predetermined distance as the threshold voltage.
  • adjustment of the spring constant of the elastic member 10 can be freely set by the amount of the elastomer in the material having the pressure-sensitive conductivity described above. Further, the magnitude of the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 can be freely set by the amount of carbon particles in the material having the same pressure-sensitive conductivity.
  • FIG. 5 is a perspective view showing an appearance of the detection device 110.
  • the description is abbreviate
  • the detection device 110 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10.
  • the elastic member 10 in the detection device 110 has a columnar shape, and its cross-sectional shape on the XZ plane is formed in a semicircular shape.
  • the elastic member 10 having a semicircular cross-sectional shape on the XZ plane is referred to as an elastic member 12.
  • the column surface (curved surface) portion of the semi-cylindrical elastic member 11 is in contact with the contact surface 21a, and the flat surface of the elastic member 12 is in contact with the contact surface 22a.
  • the elastic member 12 is clamped by the contact surface 22a.
  • the elastic member 10 in the detection apparatus 110 is formed of the elastic member 12 having a semicircular cross-sectional shape
  • the cross-sectional shape may be a semi-elliptical shape.
  • the contact area S ⁇ b> 2 of the contact region 25 between the upper side of the elastic member 12 and the first electrode portion 21 is increased. growing. Further, by pressing the elastic member 12, the shape of the compressed elastic member 12 viewed from the front ( ⁇ Y side) expands in the left-right direction, and the distance between the pair of electrode portions 20 tends to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 12 becomes small, and as a result, the rate of change of the resistance value R1 becomes large before and after the elastic member 12 is pressed compared to the conventional case.
  • the contact area between the lower side of the elastic member 12 and the second electrode portion 22 hardly changes. Accordingly, since only the change in the contact area S2 due to the contact region 25 between the upper side of the elastic member 12 and the first electrode portion 21 occurs, the effect of the decrease in the resistance value R1 due to the change in the contact area S2 is the detection device 100. It becomes smaller than the case of. However, since one surface of the elastic member 12 is a flat surface, the elastic member 12 can be easily placed in the apparatus.
  • FIG. 6 is a perspective view showing the appearance of the detection device 120.
  • the description is abbreviate
  • the detection device 120 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10.
  • the cross-sectional area S1 of the elastic member 10 cut along a plane orthogonal to the first direction D1 (XY plane) changes as it goes from one contact surface 21a side to the other contact surface 22a side. It is a shape to do.
  • the elastic member 10 in the detection device 120 has a columnar shape, and its cross-sectional shape on the XZ plane is formed in a polygon.
  • the elastic member 10 has a pentagonal cross-sectional shape. That is, the elastic member 10 is formed in a pentagonal column shape.
  • the elastic member 10 formed in a pentagonal column shape is referred to as an elastic member 13.
  • the upper part of the pentagonal columnar elastic member 13 is in contact with the contact surface 21a
  • the lower flat surface of the elastic member 13 is in contact with the contact surface 22a
  • the elastic member 13 is formed by the contact surface 21a and the contact surface 22a. It is pinched.
  • the detection device 100 As in the case of the detection device 100, by pressing the detection device 120, that is, by pressing the elastic member 13, the shape of the compressed elastic member 13 viewed from the front ( ⁇ Y side) expands in the left-right direction, The distance between the pair of electrode portions 20 tends to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 13 decreases, and as a result, the rate of change of the resistance value R1 increases before and after pressing the elastic member 13 as compared with the conventional case.
  • the contact area between the lower side of the elastic member 13 and the second electrode portion 22 hardly changes, but the upper side of the elastic member 13 and the first The contact area S ⁇ b> 2 with the electrode unit 21 changes in the same manner as in the detection device 100. Therefore, an effect is obtained by reducing the resistance value R1 associated with the change in the contact area S2 between the elastic member 13 and the pair of electrode portions 20.
  • the elastic member 13 in the detection device 120 is formed in a prismatic shape having a pentagonal cross-sectional shape, but may be a polygonal shape having other odd-numbered angles such as a triangular shape.
  • the cross-sectional shape is an odd-numbered polygon
  • the flat surface side can be arranged on the lower side.
  • the shape of the elastic member 13 may be a polygon with an even angle such as a hexagonal cross section.
  • the cross-sectional shape is an even-numbered polygon, flat surfaces can be arranged on both the lower side and the upper side.
  • the cross-sectional shape is a square, the cross-sectional area of the elastic member 10 cut along a plane orthogonal to the first direction D1 hardly changes as it goes from the one contact surface 21a side to the other contact surface 22a side. . Accordingly, the prismatic elastic member 10 having a square cross-sectional shape is not included in the subject of the present invention.
  • the shape of the elastic member 13 is a polygon having an even-numbered cross section
  • the shape of the elastic member 13 is different from the case where the shape of the elastic member 13 is a polygon having an odd-numbered cross section. 21 and the contact area between the lower side of the elastic member 13 and the second electrode portion 22 hardly change. Therefore, there is almost no effect due to the decrease in the resistance value R ⁇ b> 1 due to the change in the contact area between the elastic member 13 and the pair of electrode portions 20.
  • both surfaces of the elastic member 13 are flat surfaces, the elastic member 13 can be easily placed in the apparatus.
  • FIG. 7 is a perspective view showing the external appearance of the detection device 130. Note that the structure of the detection device 130 is different from the structure of the detection device 100 of the first embodiment only in the internal structure of the elastic member 10, and therefore, the same parts as the detection device 100 will be described. Omitted.
  • the detection device 130 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10.
  • the elastic member 10 in the detection device 130 has a columnar shape, and similarly to the detection device 100, the cross-sectional shape on the XZ plane is circular. However, unlike the elastic member 11 of the detection device 100, a plurality of gaps 14a, which are minute spaces, are formed inside. In addition, the space
  • the detection device 130 since the plurality of gap portions 14a are formed inside the elastic member 14, when the elastic member 14 is pressed by the pair of electrode portions 20, pressure is applied to the gap portion 14a from above and below, and the gap portion 14a. Is compressed, the upper and lower surfaces of the gap portion 14a come into contact with each other, and the electrical conduction path in the elastic member 14 is expanded. As a result, the resistance value R1 of the elastic member 14 between the pair of electrode portions 20 is further reduced, so that the rate of change of the resistance value R1 can be further increased.
  • the elastic member 14 in the detection device 130 has a plurality of voids 14a formed therein, but has one or more holes penetrating in the same direction as the extending direction (Y direction) of the elastic member 14. You may make it form.
  • the detection device 100 Since the elastic member 10 has a shape in which the cross-sectional area S1 changes from the one contact surface 21a side toward the other contact surface 22a side, the detection device 100 has a shape when the elastic member 10 is pressed. The contact area S2 in the contact region 25 between the elastic member 10 and the electrode part 20 is expanded. For this reason, the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 is reduced, whereby the rate of change of the resistance value R1 can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
  • the electrode portion 20 is disposed in a direction orthogonal to the extending direction of the columnar elastic member 10 (opposite the column surface), the contact in the contact region 25 between the electrode portion 20 and the elastic member 10 is achieved.
  • the area S2 can be easily enlarged.
  • the cross-sectional shape of the elastic member 11 cut along the XZ plane is a circle or an ellipse, the contact area S2 in the contact region 25 between each of the pair of electrode portions 20 and the elastic member 11 can be efficiently expanded. Can do.
  • the cross-sectional shape of the elastic member 12 when cut along the XZ plane of the elastic member 11 is a semicircle or a semi-ellipse, one surface of the elastic member 12 is a flat surface.
  • the elastic member 12 can be easily arranged in the apparatus.
  • the detection device 120 has a polygonal cross-sectional shape when cut along the XZ plane of the elastic member 11, at least one surface of the elastic member 13 can be a flat surface. It becomes easy to arrange the elastic member 13 in the apparatus.
  • the detection device 130 since the detection device 130 has a plurality of gaps 14a formed inside the elastic member 14, when the elastic member 14 is pressed, pressure is applied to the gap 14a from above and below, and the gap 14a is compressed. The upper and lower surfaces of the gap portion 14a come into contact with each other, and the electrical conduction path in the elastic member 14 is expanded. As a result, the resistance value R1 of the elastic member 14 between the pair of electrode portions 20 is further reduced, so that the rate of change of the resistance value R1 can be further increased.
  • FIG. 8 is a perspective view showing the appearance of the detection device 200.
  • the description is abbreviate
  • the detection device 200 includes an elastic member 15 and a pair of electrode portions 20 that come into contact with the elastic member 15.
  • the elastic member 15 in the detection device 200 has a substantially spherical shape at least one of the portions facing the pair of electrode portions 20. Therefore, the elastic member 15 has a plane (XY plane) orthogonal to the first direction D1, which is the direction in which the contact surface 21a and the contact surface 22a face each other in a state where the electrode portion 20 is in contact with the elastic member 15.
  • the cross-sectional area S1 of the elastic member 15 cut in step) is a member that changes from the one contact surface 21a side toward the other contact surface 22a side.
  • the elastic member 15 is formed in a spherical shape.
  • the elastic member 15 formed in a spherical shape is referred to as an elastic member 16.
  • the upper curved surface portion of the spherical elastic member 16 is in contact with the contact surface 21a, and the lower curved surface portion of the elastic member 16 is in contact with the contact surface 22a, and the elastic member is formed by the contact surface 21a and the contact surface 22a. 16 is pinched.
  • FIG. 9 is a schematic view of the detection device 200 as viewed from the front ( ⁇ Y side), showing changes in the contact area 25 and the elastic member 15 (elastic member 16) before and after the pressing operation
  • FIG. FIG. 9B shows a state before the detection device 200 is pressed
  • FIG. 9B shows a state where the detection device 200 is being pressed
  • FIG. 9C shows the detection device 200 being pressed to the maximum. Shows the state.
  • FIG. 10 is a schematic view seen from above (+ Z side) showing changes in the contact area 25 and the elastic member 15 (elastic member 16) before and after the pressing operation.
  • FIG. FIG. 10B shows a state before the detection device 200 is being pressed
  • FIG. 10C shows a state where the detection device 200 is pressed to the maximum. Yes.
  • the pair of electrode parts 20 (first electrode part 21 and second electrode part 22) are in the upper and lower contact areas 25 of the elastic member 16 before the detection device 200 is pressed. It is in contact with the elastic member 16.
  • the shape of the elastic member 16 viewed from the front ( ⁇ Y side) at this time remains circular.
  • the contact region 25 is on the curved surface of the elastic member 16, the shape seen from the upper surface (+ Z side) is a small circle as shown in FIG. 10 (a). Further, the shape of the elastic member 16 viewed from the upper surface (+ Z side) is a circle below the first electrode portion 21.
  • the pair of electrode portions 20 (the first electrode portion 21 and the second electrode portion 22) are in contact with the upper and lower sides of the elastic member 16.
  • the elastic member 16 is compressed in the region 25.
  • the shape of the compressed elastic member 16 viewed from the front ( ⁇ Y side) becomes an elliptical shape that expands in the left-right direction.
  • the shape of the compressed elastic member 16 viewed from the front ( ⁇ Y side) is an elliptical shape expanding in the left-right direction
  • the circular shape of the elastic member 16 viewed from the upper surface (+ Z side) is as shown in FIG.
  • a circular shape having a larger diameter is obtained.
  • the contact region 25 changes its shape as viewed from the upper surface (+ Z side). As shown in FIG. It will be bigger than before. That is, the contact area S2 of the contact region 25 is increased.
  • the pair of electrode portions 20 (the first electrode portion 21 and the second electrode).
  • the part 22) further compresses the elastic member 16 in the upper and lower contact areas 25 of the elastic member 16.
  • the shape of the compressed elastic member 16 viewed from the front ( ⁇ Y side) becomes a flat elliptical shape that further expands in the left-right direction.
  • the contact region 25 changes its shape as viewed from the upper surface (+ Z side), and the circular diameter is further increased as shown in FIG. Become. That is, the contact area S2 of the contact region 25 is further increased.
  • the contact area S2 of the contact region 25 is increased. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 16 becomes small, and as a result, the rate of change of the resistance value R1 becomes large before and after the elastic member 16 is pressed compared to the conventional case.
  • the shape seen from the front ( ⁇ Y side) of the compressed elastic member 16 becomes an elliptical shape spreading in the left-right direction, and the distance between the pair of electrode portions 20 is closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 16 becomes small, and the rate of change of the resistance value R1 becomes larger.
  • FIG. 11 is a perspective view showing the external appearance of the detection device 210.
  • the description is abbreviate
  • the detection device 210 includes an elastic member 15 and a pair of electrode portions 20 that are in contact with the elastic member 15.
  • the elastic member 15 in the detection device 210 is hemispherical having a flat portion 17a on one side.
  • the hemispherical elastic member 15 is referred to as an elastic member 17.
  • the curved surface portion of the hemispherical elastic member 17 is in contact with the contact surface 21a, and the flat portion 17a, which is a flat surface of the elastic member 17, is in contact with the contact surface 22a.
  • the elastic member 17 is clamped by the contact surface 22a.
  • the contact area S ⁇ b> 2 of the contact region 25 between the upper side of the elastic member 17 and the first electrode portion 21 is increased. growing. Further, by pressing the elastic member 17, the shape of the compressed elastic member 17 viewed from the front ( ⁇ Y side) expands in the left-right direction, and the distance between the pair of electrode portions 20 tends to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 17 becomes small, and as a result, the rate of change of the resistance value R1 becomes large before and after the elastic member 17 is pressed compared to the conventional case.
  • the contact area between the lower side of the elastic member 17 and the second electrode portion 22 hardly changes. Accordingly, since only the change in the contact area S2 due to the contact region 25 between the upper side of the elastic member 17 and the first electrode portion 21 is achieved, the effect of the decrease in the resistance value R1 due to the change in the contact area S2 is the detection device 200. It becomes smaller than the case of. However, since one surface of the elastic member 17 is a flat surface, the elastic member 17 can be easily arranged in the apparatus.
  • the contact area S2 in the contact region 25 between the at least one electrode portion 20 and the elastic member 15 can be expanded more efficiently.
  • the elastic member 16 is spherical, two portions of the spherical portion of the elastic member 16 can be made to face each of the pair of electrode portions 20. Therefore, the contact area S ⁇ b> 2 in the contact region 25 between each of the pair of electrode portions 20 and the elastic member 16 can be expanded more efficiently.
  • the elastic member 17 is hemispherical having the flat portion 17a, one surface of the elastic member 17 is a flat surface, and the elastic member 17 is easily arranged in the device.
  • FIG. 12 is a perspective view showing an external appearance of the detection apparatus 300.
  • the description is abbreviate
  • the detection device 300 includes an elastic member 19 and a pair of electrode portions 20 that are in contact with the elastic member 19.
  • the elastic member 19 in the detection device 300 has a weight shape having a bottom surface 19a on one side and a vertex 19b on the other side. Therefore, the elastic member 19 has a plane (XY plane) orthogonal to the first direction D1, which is the direction in which the contact surface 21a and the contact surface 22a face each other in a state where the electrode portion 20 is in contact with the elastic member 19.
  • the cross-sectional area S1 of the elastic member 19 cut in step) is a member that changes from the one contact surface 21a side toward the other contact surface 22a side.
  • the elastic member 19 has a quadrangular pyramid shape, the apex 19b of the quadrangular pyramid contacts the contact surface 21a, and the bottom surface 19a that is a flat surface of the elastic member 19 contacts the contact surface 22a.
  • the elastic member 19 is held between the contact surface 21a and the contact surface 22a. That is, one of the electrode portions 20 faces the bottom surface 19a of the elastic member 19, and the other faces the vertex 19b.
  • the contact area S ⁇ b> 2 of the contact region 25 between the upper side of the elastic member 19 and the first electrode portion 21 is increased. growing.
  • the shape of the contact region 25 when the compressed elastic member 19 is viewed from above is expanded in four directions, and the distance between the pair of electrode portions 20 is likely to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 19 is reduced, and as a result, the rate of change of the resistance value R1 is increased before and after the elastic member 19 is pressed compared to the conventional case.
  • the contact area between the lower side of the elastic member 19 and the second electrode portion 22 of the detection device 300 hardly changes. Therefore, the change in the contact area S ⁇ b> 2 is only the change in the contact area S ⁇ b> 2 due to the contact region 25 between the upper side of the elastic member 19 and the first electrode portion 21.
  • one surface of the elastic member 19 is a flat surface, the elastic member 19 can be easily arranged in the apparatus.
  • the elastic member 19 in the detection device 300 is a pyramid having a quadrangular pyramid shape, but may be another polygonal pyramid shape such as a triangular pyramid shape or a conical shape.
  • the elastic member 19 since the elastic member 19 has a weight shape, the contact area S2 in the contact region 25 between the electrode portion 20 and the apex 19b of the elastic member 19 can be expanded more efficiently. Further, since the bottom surface 19a side of the elastic member 19 is a flat surface, the elastic member 19 can be easily placed in the apparatus.
  • the elastic device since the elastic device has a shape in which the cross-sectional area changes from one contact surface side to the other contact surface side, when the elastic member is pressed, The contact area in the contact region between the elastic member and the electrode portion is increased. For this reason, the resistance value between the pair of electrode portions of the elastic member is reduced, whereby the rate of change of the resistance value can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
  • a structure in which a gap is provided in the elastic member may be applied to the second embodiment and the third embodiment.

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Abstract

[Problem] To provide a detection apparatus that is capable of providing a sufficient margin to a threshold for determining the presence/absence of a switching operation by increasing the rate of change of a resistance value between a pair of electrodes. [Solution] The present invention is provided with: a pressure-sensitive conductive elastic member 10; and a pair of conducive electrodes 20 that holds the elastic member 10 between contact surfaces 21a and 22a thereof, the surfaces being in contact with the elastic member 10, wherein the pair of electrodes 20 are relatively movable in a first direction D1, in which the contact surfaces 21a and 22a face each other, in a state of being in contact with the elastic member 10, and wherein the sectional area S1 of the elastic member 10 cut on a plane orthogonal to the first direction D1 changes from one contact surface 21a side toward the other contact surface side 22a.

Description

検出装置Detection device
　本発明は、検出装置に関し、特に、入力検知部材に感圧導電性を有する弾性部材を用いた検出装置に関する。 The present invention relates to a detection device, and more particularly, to a detection device using an elastic member having pressure-sensitive conductivity as an input detection member.
　近年、入力検知部材に感圧導電性を有する弾性部材を用いた検出装置が知られている。 In recent years, a detection device using an elastic member having pressure-sensitive conductivity as an input detection member is known.
　このような検出装置を有した入力装置が特許文献１に開示されている。以下、特許文献１に開示されたペン形入力装置９００について図１３を用いて説明する。 An input device having such a detection device is disclosed in Patent Document 1. Hereinafter, a pen-type input device 900 disclosed in Patent Document 1 will be described with reference to FIG.
　図１３はペン形入力装置９００の実施形態を示す縦断面図である。図１３に示されるように、実施形態のペン形入力装置９００は、円筒形状の本体９１０の一端に筆記ユニット４００Ａが設けられ、本体９１０の他端に消去ユニット４００Ｂが設けられている。ペン形入力装置４００の筆記ユニット４００Ａは、本体９１０の内部に、ペン先可動部（第１接触部材）９２０と、ペン先圧力センサ（第１入力検知部材）４４０と、ペン先バネ（第１弾性部材）９６０とを有する。また、消去ユニット４００Ｂは、本体９１０の内部に、ペン尻可動部（第２接触部材）９３０と、ペン尻圧力センサ（第２入力検知部材）４５０と、ペン尻バネ（第２弾性部材）９７０とを有する。 FIG. 13 is a longitudinal sectional view showing an embodiment of the pen-type input device 900. As shown in FIG. 13, in the pen-type input device 900 of the embodiment, a writing unit 400A is provided at one end of a cylindrical main body 910, and an erasing unit 400B is provided at the other end of the main body 910. The writing unit 400 </ b> A of the pen-type input device 400 includes a pen point movable part (first contact member) 920, a pen point pressure sensor (first input detection member) 440, and a pen point spring (first) in the main body 910. Elastic member) 960. Further, the erasing unit 400B includes a pen butt movable part (second contact member) 930, a pen butt pressure sensor (second input detection member) 450, and a pen butt spring (second elastic member) 970 inside the main body 910. And have.
　ペン先圧力センサ４４０は、ペン先可動部９２０が押圧されて圧縮されたペン先バネ９６０のバネ力に応じて弾性変形し、当該弾性変形量に応じて抵抗値を変化させる特性を有する感圧導電性エラストマーセンサからなる。そのため、ペン先圧力センサ４４０は、筆記操作によるペン先バネ９６０のバネ力に応じた圧力値を検知する。また、ペン尻圧力センサ４５０は、ペン尻可動部９３０が押圧されて圧縮されたペン尻バネ９７０のバネ力に応じて弾性変形し、当該弾性変形量に応じて抵抗値を変化させる特性を有する感圧導電性エラストマーセンサからなる。そのため、ペン尻圧力センサ４５０は、消去操作によるペン尻バネ９７０のバネ力に応じた圧力値を検知する。 The nib pressure sensor 440 is elastically deformed according to the spring force of the nib spring 960 compressed by the nib movable part 920 being pressed, and has a characteristic of changing a resistance value according to the elastic deformation amount. It consists of a conductive elastomer sensor. Therefore, the nib pressure sensor 440 detects a pressure value corresponding to the spring force of the nib spring 960 by a writing operation. The pen butt pressure sensor 450 has a characteristic of elastically deforming according to the spring force of the pen butt spring 970 compressed by the pen butt movable unit 930 being pressed, and changing the resistance value according to the amount of elastic deformation. It consists of a pressure sensitive conductive elastomer sensor. Therefore, the pen butt pressure sensor 450 detects a pressure value corresponding to the spring force of the pen butt spring 970 by the erasing operation.
　このような構成を用いることによって、異なる向きの操作を検知することが可能となるペン形入力装置９００を提供することができる。 By using such a configuration, it is possible to provide a pen-type input device 900 that can detect operations in different directions.
特開２０１４－１１５７５２号公報JP 2014-115752 A
　ペン形入力装置９００では、ペン先可動部９２０に加えられた圧力値を検知してスイッチング動作を行なうための検出装置として、ペン先圧力センサ４４０が用いられている。ペン先圧力センサ４４０のような検出装置においては、その検出部材として感圧導電性を有した弾性部材、所謂導電ゴムが用いられ、圧力が加えられた場合、当該弾性部材が圧縮することにより、その圧縮量に応じて入力動作を検知する。言い換えると、弾性部材は圧縮されると変形するため、変形に伴ってその抵抗値が変化する。その抵抗値が変化することで出力電圧が変化するため、出力電圧の変化を検出することで入力動作を検知する。 In the pen-type input device 900, a pen tip pressure sensor 440 is used as a detection device for detecting a pressure value applied to the pen tip movable unit 920 and performing a switching operation. In a detection device such as the nib pressure sensor 440, an elastic member having pressure-sensitive conductivity, a so-called conductive rubber, is used as the detection member, and when the pressure is applied, the elastic member compresses, An input operation is detected according to the compression amount. In other words, since the elastic member is deformed when it is compressed, its resistance value changes with deformation. Since the output voltage changes as the resistance value changes, the input operation is detected by detecting the change in the output voltage.
　一般的には、この弾性部材の両端に一対の電極部が設けられ、スイッチング動作時に一対の電極部間に存在する抵抗の値が測定される。そして、加えられた圧力の値に応じて変化する当該抵抗値の変化量の大きさに対応して、事前に設定した閾値を基にスイッチング動作の有無を判定する。 Generally, a pair of electrode portions is provided at both ends of the elastic member, and a resistance value existing between the pair of electrode portions is measured during a switching operation. And the presence or absence of switching operation | movement is determined based on the threshold value set beforehand corresponding to the magnitude | size of the variation | change_quantity of the said resistance value which changes according to the value of the applied pressure.
　検出装置の検出部材として用いられる弾性材料の形状としては、従来から、円柱状又は角柱状の形状が用いられ、圧力を受ける面が、円柱又は角柱の上面又は底面である平坦な面となっている。弾性材料の形状がこのような形状である場合、弾性材料に圧力が加わった際に、弾性材料の圧力が加わる方向に対して直交する方向の幅が、圧力の値によらずにほぼ一定のままである。また、圧力を受ける弾性材料の電極部と接する接触面も、その接触面積が変わらない。 As the shape of the elastic material used as the detection member of the detection device, conventionally, a cylindrical or prismatic shape is used, and the surface that receives pressure is a flat surface that is the top surface or the bottom surface of the cylinder or prism. Yes. When the shape of the elastic material is such a shape, when pressure is applied to the elastic material, the width in the direction perpendicular to the direction in which the pressure of the elastic material is applied is substantially constant regardless of the pressure value. It remains. Moreover, the contact area which contacts the electrode part of the elastic material which receives a pressure does not change.
　このような従来の検出装置においては、弾性材料の両端間に加えられた圧力による抵抗値の変化が、一対の電極部間の距離の変化によるもののみであった。そのため、スイッチング動作の有無を判定する際の分解能を大きくすることができなかった。また、弾性材料の圧縮が繰り返されると、上記一対の電極部間の抵抗値が大きくなる。そのため、抵抗値の変化量の比率が小さくなってしまい、上記分解能がますます小さくなっていた。そのため、スイッチング動作の有無判定のための閾値に余裕がないという問題があった。 In such a conventional detection device, the change in the resistance value due to the pressure applied between both ends of the elastic material was only due to the change in the distance between the pair of electrode portions. For this reason, it has been impossible to increase the resolution when determining the presence or absence of the switching operation. Further, when the compression of the elastic material is repeated, the resistance value between the pair of electrode portions increases. For this reason, the ratio of the change amount of the resistance value is reduced, and the resolution is further reduced. For this reason, there is a problem that there is no margin in the threshold value for determining the presence or absence of the switching operation.
　本発明はこのような従来技術の実情に鑑みてなされたもので、一対の電極部間における抵抗値の変化量の比率を大きくし、スイッチング動作の有無判定のための閾値に十分な余裕を持たせることができる検出装置を提供する。 The present invention has been made in view of such a state of the art, and increases the ratio of the amount of change in the resistance value between the pair of electrode portions, and has a sufficient margin for the threshold value for determining the presence or absence of the switching operation. Provided is a detection device that can be made to operate.
　上記課題を解決するために本発明の検出装置は、感圧導電性を有する弾性部材と、導電性を有し、前記弾性部材と接触する接触面で前記弾性部材を挟持する一対の電極部と、を備え、一対の前記電極部は、前記弾性部材に接触した状態で前記接触面同士が対向する第１方向へ相対的に移動可能であり、前記第１方向に対して直交する平面で切断した前記弾性部材の断面積は、一方の前記接触面側から他方の前記接触面側へ向かうに従って変化する、という特徴を有する。 In order to solve the above problems, a detection device of the present invention includes an elastic member having pressure-sensitive conductivity, and a pair of electrode portions that have conductivity and sandwich the elastic member between contact surfaces that are in contact with the elastic member. The pair of electrode portions are movable relative to a first direction in which the contact surfaces face each other in contact with the elastic member, and are cut along a plane orthogonal to the first direction. The cross-sectional area of the elastic member is characterized in that it changes from one contact surface side toward the other contact surface side.
　このように構成された検出装置は、一方の接触面側から他方の接触面側へ向かうに従って断面積が変化するような形状を弾性部材が有しているため、弾性部材が押圧された際に弾性部材と電極部との接触領域における接触面積が拡がる。そのため、弾性部材の一対の電極部間における抵抗値が小さくなり、そのことによって抵抗値の変化率を大きくすることができる。その結果、スイッチング動作の有無判定のための閾値に十分な余裕を持たせることができる。 In the detection device configured in this way, the elastic member has a shape in which the cross-sectional area changes from one contact surface side toward the other contact surface side, so that when the elastic member is pressed, The contact area in the contact region between the elastic member and the electrode portion is increased. For this reason, the resistance value between the pair of electrode portions of the elastic member is reduced, whereby the rate of change of the resistance value can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
　また、上記の構成において、前記弾性部材は柱状であり、一対の前記電極部は前記弾性部材の柱面側に配置されている、という特徴を有する。 Further, in the above configuration, the elastic member has a columnar shape, and the pair of electrode portions are arranged on the column surface side of the elastic member.
　このように構成された検出装置は、弾性部材の柱面側即ち柱状の弾性部材の延設方向に対して直交する方向に電極部が配置されているので、電極部と弾性部材との接触領域における接触面積を容易に拡大させることができる。 In the detection apparatus configured as described above, the electrode portion is arranged in the direction orthogonal to the column surface side of the elastic member, that is, the extending direction of the columnar elastic member, so that the contact area between the electrode portion and the elastic member The contact area at can be easily expanded.
　また、上記の構成において、前記第１方向に平行で且つ前記柱状が延設された方向に対して垂直な平面で切断した時の前記弾性部材の断面形状が円又は楕円である、という特徴を有する。 Further, in the above configuration, the elastic member has a feature that a cross-sectional shape of the elastic member is a circle or an ellipse when cut along a plane parallel to the first direction and perpendicular to a direction in which the columnar shape extends. Have.
　このように構成された検出装置は、弾性部材の断面形状が円又は楕円であるため、一対の電極部それぞれと弾性部材との接触領域における接触面積を効率良く拡大させることができる。 In the detection apparatus configured as described above, since the cross-sectional shape of the elastic member is a circle or an ellipse, the contact area in the contact region between each of the pair of electrode portions and the elastic member can be efficiently expanded.
　また、上記の構成において、前記第１方向に平行で且つ前記柱状が延設された方向に対して垂直な平面で切断した時の前記弾性部材の断面形状が半円又は半楕円である、という特徴を有する。 Further, in the above configuration, the cross-sectional shape of the elastic member when cut along a plane parallel to the first direction and perpendicular to the extending direction of the columnar shape is a semicircle or a semi-ellipse. Has characteristics.
　このように構成された検出装置は、弾性部材の断面形状が半円又は半楕円であるため、弾性部材の一方の面が平坦な面となっており、弾性部材を装置内に配置し易くなる。 In the detection device configured as described above, since the cross-sectional shape of the elastic member is a semicircle or a semi-ellipse, one surface of the elastic member is a flat surface, and the elastic member can be easily placed in the device. .
　また、上記の構成において、前記第１方向に平行で且つ前記柱状が延設された方向に対して垂直な平面で切断した時の前記弾性部材の断面形状が多角形である、という特徴を有する。 Further, in the above configuration, the elastic member has a feature that the cross-sectional shape of the elastic member is a polygon when cut along a plane parallel to the first direction and perpendicular to the direction in which the columnar shape extends. .
　このように構成された検出装置は、弾性部材の断面形状が多角形であるため、弾性部材の少なくとも１つの面を平坦な面とすることができ、弾性部材を装置内に配置し易くなる。 Since the elastic member has a polygonal cross-sectional shape in the detection device configured in this way, at least one surface of the elastic member can be a flat surface, and the elastic member can be easily placed in the device.
　また、上記の構成において、前記弾性部材の前記電極部に対向する箇所の少なくとも一方は略球面状である、という特徴を有する。 Further, in the above configuration, at least one of the portions of the elastic member facing the electrode portion is characterized by being substantially spherical.
　このように構成された検出装置は、弾性部材の電極部に対向する箇所の少なくとも一方が略球面状であるため、当該少なくとも一方の電極部と弾性部材との接触領域における接触面積をより効率良く拡大させることができる。 In the detection device configured as described above, since at least one of the portions facing the electrode portion of the elastic member has a substantially spherical shape, the contact area in the contact region between the at least one electrode portion and the elastic member can be improved more efficiently. Can be enlarged.
　また、上記の構成において、前記弾性部材は球状である、という特徴を有する。 In the above configuration, the elastic member is spherical.
　このように構成された検出装置は、弾性部材が球状であるため、弾性部材の球面部の２箇所を一対の電極部それぞれに対向させることができる。そのため、一対の電極部それぞれと弾性部材との接触領域における接触面積を、更に効率良く拡大させることができる。 In the detection apparatus configured as described above, since the elastic member is spherical, the two spherical portions of the elastic member can be opposed to the pair of electrode portions, respectively. Therefore, the contact area in the contact region between each of the pair of electrode portions and the elastic member can be further efficiently increased.
　また、上記の構成において、前記弾性部材は平面部を有する半球状であり、前記電極部の一方は前記平面部に対向している、という特徴を有する。 Further, in the above configuration, the elastic member has a hemispherical shape having a flat portion, and one of the electrode portions faces the flat portion.
　このように構成された検出装置は、弾性部材が平面部を有する半球状であるため、弾性部材の一方の面が平坦な面となっており、弾性部材を装置内に配置し易くなる。 In the detection device configured as described above, since the elastic member is a hemisphere having a flat surface, one surface of the elastic member is a flat surface, and the elastic member can be easily placed in the device.
　また、上記の構成において、前記弾性部材は底面及び頂点を有する錘体状であり、前記電極部の一方は前記底面に対向すると共に、他方は前記頂点に対向する、という特徴を有する。 Further, in the above configuration, the elastic member has a weight shape having a bottom surface and a vertex, and one of the electrode portions is opposed to the bottom surface, and the other is opposed to the vertex.
　このように構成された検出装置は、弾性部材が錘体状であるため、電極部と弾性部材の頂点との接触領域における接触面積を、より効率良く拡大させることができる。また、弾性部材の底面側が平坦な面となっているので、弾性部材を装置内に配置し易くなる。 In the detection apparatus configured as described above, since the elastic member has a weight shape, the contact area in the contact region between the electrode portion and the apex of the elastic member can be expanded more efficiently. Further, since the bottom surface side of the elastic member is a flat surface, the elastic member can be easily arranged in the apparatus.
　本発明の検出装置は、一方の接触面側から他方の接触面側へ向かうに従って断面積が変化するような形状を弾性部材が有しているため、弾性部材が押圧された際に弾性部材と電極部との接触領域における接触面積が拡がる。そのため、弾性部材の一対の電極部間における抵抗値が小さくなり、そのことによって抵抗値の変化率を大きくすることができる。その結果、スイッチング動作の有無判定のための閾値に十分な余裕を持たせることができる。 In the detection device of the present invention, since the elastic member has such a shape that the cross-sectional area changes from one contact surface side to the other contact surface side, when the elastic member is pressed, The contact area in the contact area with the electrode portion is expanded. For this reason, the resistance value between the pair of electrode portions of the elastic member is reduced, whereby the rate of change of the resistance value can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
本発明・第１実施形態の検出装置（円柱状）を示す斜視図である。It is a perspective view which shows the detection apparatus (column shape) of this invention and 1st Embodiment. 押圧操作前後の接触領域及び弾性部材を示す、正面から見た模式図である。It is the schematic diagram seen from the front which shows the contact area and elastic member before and behind pressing operation. 押圧操作前後の接触領域及び弾性部材を示す、上方から見た模式図である。It is the schematic diagram seen from the upper side which shows the contact area before and behind pressing operation, and an elastic member. 固定抵抗を含む検出装置の回路図の一例である。It is an example of the circuit diagram of the detection apparatus containing fixed resistance. 第１実施形態・第１変形例の検出装置（半円柱状）を示す斜視図である。It is a perspective view which shows the detection apparatus (semi-columnar shape) of 1st Embodiment and a 1st modification. 第１実施形態・第２変形例の検出装置（角柱状）を示す斜視図である。It is a perspective view which shows the detection apparatus (prism shape) of 1st Embodiment and a 2nd modification. 第１実施形態・第３変形例の検出装置（気泡）を示す斜視図である。It is a perspective view which shows the detection apparatus (bubble) of 1st Embodiment and a 3rd modification. 本発明・第２実施形態の検出装置（球状）を示す斜視図である。It is a perspective view which shows the detection apparatus (spherical shape) of 2nd Embodiment of this invention. 押圧操作前後の接触領域及び弾性部材を示す、正面から見た模式図である。It is the schematic diagram seen from the front which shows the contact area and elastic member before and behind pressing operation. 押圧操作前後の接触領域及び弾性部材を示す、上方から見た模式図である。It is the schematic diagram seen from the upper side which shows the contact area before and behind pressing operation, and an elastic member. 第２実施形態・第１変形例の検出装置（半球状）を示す斜視図である。It is a perspective view which shows the detection apparatus (hemisphere) of 2nd Embodiment and a 1st modification. 本発明・第３実施形態の検出装置（錐体状）を示す斜視図である。It is a perspective view which shows the detection apparatus (cone shape) of 3rd Embodiment of this invention. 従来例に関わる検出装置を示す断面図である。It is sectional drawing which shows the detection apparatus in connection with a prior art example.
　以下、本発明の検出装置について図面を参照しながら説明する。本発明の対象は、入力検知部材に感圧導電性を有する弾性部材を用いた検出装置である。入力検知部材は押圧されることで変形し、押圧量の変化（形状変化）に伴って入力検知部材の抵抗値も変化する。そのため、入力検知部材の抵抗値に対して閾値を設け、抵抗値が閾値より大きいか小さいかを識別することで、スイッチ装置の様に用いることができる。又は、出力電圧に閾値を設けることでも、スイッチ装置の様に用いることができる。本発明の検出装置は、例えば、ゲーム等に使用されるスイッチ装置や、トイレの便座に使用されるスイッチ装置等、弾性部材の特性を利用して、アナログ的なスイッチ感覚を得ることのできるスイッチ装置に適用される。尚、本発明の検出装置の用途については、以下説明する実施形態に限定されるものではなく適宜変更が可能である。また、各図面に対する説明の中で、右側、左側、上側、下側と記載している場合、これらは、それぞれ各図面内で＋Ｘ側、－Ｘ側、＋Ｚ側、Ｚ側を示している。 Hereinafter, the detection apparatus of the present invention will be described with reference to the drawings. An object of the present invention is a detection device using an elastic member having pressure-sensitive conductivity as an input detection member. The input detection member is deformed by being pressed, and the resistance value of the input detection member is also changed in accordance with a change in the pressing amount (shape change). Therefore, a threshold value is provided for the resistance value of the input detection member, and it can be used like a switch device by identifying whether the resistance value is larger or smaller than the threshold value. Alternatively, it can be used like a switching device by providing a threshold for the output voltage. The detection device of the present invention is a switch that can obtain an analog switch feeling by utilizing the characteristics of an elastic member, such as a switch device used in a game or the like, a switch device used in a toilet seat, etc. Applied to the device. The application of the detection apparatus of the present invention is not limited to the embodiments described below, and can be changed as appropriate. In the description of each drawing, when it is described as the right side, the left side, the upper side, and the lower side, these indicate the + X side, the −X side, the + Z side, and the Z side, respectively.
　［第１実施形態］
　最初に、図１を参照して、本発明の第１実施形態に係る検出装置１００の構造について説明する。図１は、検出装置１００の外観を示す斜視図である。 [First Embodiment]
First, the structure of the detection apparatus 100 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a perspective view showing an external appearance of the detection apparatus 100.
　検出装置１００は、図１に示すように、弾性部材１０と、弾性部材１０と接触する一対の電極部２０と、を備えている。電極部２０は、弾性部材１０の上側に配設された第１電極部２１と、弾性部材１０の下側に配設された第２電極部２２とから成る。一対の電極部２０、即ち第１電極部２１及び第２電極部２２は、弾性部材１０の延設方向（Ｙ方向）に対して直交する方向（上下方向）に配置されている。 As shown in FIG. 1, the detection device 100 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10. The electrode unit 20 includes a first electrode unit 21 disposed on the upper side of the elastic member 10 and a second electrode unit 22 disposed on the lower side of the elastic member 10. The pair of electrode portions 20, that is, the first electrode portion 21 and the second electrode portion 22 are arranged in a direction (vertical direction) orthogonal to the extending direction (Y direction) of the elastic member 10.
　検出装置１００は、前述したように、入力操作に伴う弾性部材１０の抵抗値の変化を検知してスイッチング動作を行なうことができるスイッチ装置である。検出装置１００は、電極部２０のうちの一方、例えば第１電極部２１の上に配設される操作部（図示せず）を押圧操作することによってスイッチング動作が行なわれるように構成されている。 As described above, the detection device 100 is a switch device that can perform a switching operation by detecting a change in the resistance value of the elastic member 10 due to an input operation. The detection device 100 is configured to perform a switching operation by pressing one of the electrode units 20, for example, an operation unit (not shown) disposed on the first electrode unit 21. .
　第１電極部２１及び第２電極部２２は、それぞれ、導電性を有していると共に、弾性部材１０と接触する接触面２１ａ及び接触面２２ａを有している。接触面２１ａ及び接触２ａは、それぞれ平坦な面となっており、第１電極部２１及び第２電極部２２は、接触面２１ａ及び接触面２２ａで上下から弾性部材１０を挟持している。尚、接触面２１ａ及び接触面２２ａは、平行になるように配置されていることが望ましい。 The first electrode portion 21 and the second electrode portion 22 have conductivity and have a contact surface 21a and a contact surface 22a that are in contact with the elastic member 10, respectively. The contact surface 21a and the contact 2a are flat surfaces. The first electrode portion 21 and the second electrode portion 22 sandwich the elastic member 10 from above and below with the contact surface 21a and the contact surface 22a. Note that the contact surface 21a and the contact surface 22a are preferably arranged so as to be parallel to each other.
　弾性部材１０は、感圧導電性を有する材料で形成されている。この感圧導電性を有する材料は、弾性を有する液状のエラストマーにカーボンの粒子を練り込んで形成されたものであり、一対の電極部２０間に抵抗値Ｒ１を有している。 The elastic member 10 is formed of a material having pressure-sensitive conductivity. This material having pressure-sensitive conductivity is formed by kneading carbon particles in a liquid elastomer having elasticity, and has a resistance value R <b> 1 between the pair of electrode portions 20.
　また、弾性部材１０は、上述した電極部２０が弾性部材１０に接触した状態で接触面２１ａ及び接触面２２ａ同士が対向する方向である第１方向Ｄ１に対して直交する平面（Ｘ－Ｙ平面）で切断した弾性部材１０の断面積Ｓ１が、一方の接触面２１ａ側（＋Ｚ側）から他方の接触面２２ａ側（－Ｚ側）へ向かうに従って変化するような形状を備えている。尚、第１実施形態の検出装置１００における弾性部材１０は柱状である。 Further, the elastic member 10 is a plane (XY plane) orthogonal to the first direction D1, which is the direction in which the contact surface 21a and the contact surface 22a face each other in a state where the electrode portion 20 is in contact with the elastic member 10. ), The cross-sectional area S1 of the elastic member 10 is changed so as to change from the one contact surface 21a side (+ Z side) toward the other contact surface 22a side (−Z side). In addition, the elastic member 10 in the detection apparatus 100 of 1st Embodiment is columnar.
　検出装置１００においては、第１方向Ｄ１に平行で且つ柱状が延設された方向（Ｙ方向）に対して垂直な平面、即ち弾性部材１０の延設方向（Ｙ方向）に対して直交する平面（Ｘ－Ｚ平面）での断面形状が円形に形成されている。従って、弾性部材１０は円柱状に形成されている。以下、円柱状に形成された弾性部材１０を弾性部材１１とする。検出装置１００では、この円柱状の弾性部材１１の柱面（曲面）の部分が、接触面２１ａ及び接触面２２ａによって挟持されている。尚、第１実施形態において弾性部材１０は、第１方向Ｄ１に平行で且つ柱状が延設された方向（Ｙ方向）に対して垂直な平面（Ｘ－Ｚ平面）で切断した断面形状が円形となっているが、断面形状が楕円形状となっていても良い。 In the detection device 100, a plane that is parallel to the first direction D1 and perpendicular to the direction in which the columnar shape extends (Y direction), that is, a plane that is orthogonal to the direction in which the elastic member 10 extends (Y direction). The cross-sectional shape at (XZ plane) is circular. Therefore, the elastic member 10 is formed in a cylindrical shape. Hereinafter, the elastic member 10 formed in a columnar shape is referred to as an elastic member 11. In the detection device 100, the column surface (curved surface) portion of the cylindrical elastic member 11 is sandwiched between the contact surface 21a and the contact surface 22a. In the first embodiment, the elastic member 10 has a circular cross-sectional shape cut along a plane (XZ plane) parallel to the first direction D1 and perpendicular to the direction in which the columnar shape extends (Y direction). However, the cross-sectional shape may be an elliptical shape.
　上述した一対の電極部２０（第１電極部２１及び第２電極部２２）は、弾性部材１０に接触した状態で接触面２１ａ及び接触面２２ａ同士が対向する方向である第１方向Ｄ１へ相対的に移動可能である。それと共に、上述した一対の電極部２０間における弾性部材１０の抵抗値Ｒ１が、一対の電極部２０の移動に伴って変化可能である。 The pair of electrode portions 20 (the first electrode portion 21 and the second electrode portion 22) described above are relatively in the first direction D1, which is a direction in which the contact surface 21a and the contact surface 22a face each other in contact with the elastic member 10. Can be moved. At the same time, the resistance value R <b> 1 of the elastic member 10 between the pair of electrode portions 20 described above can be changed with the movement of the pair of electrode portions 20.
　弾性部材１０は円柱状に形成されているが、第１方向Ｄ１に対して直交する平面（Ｘ－Ｙ面）で切断したその断面は、例えば、第１電極部２１と第２電極部２２との中間地点における断面積が最も大きく、第１電極部２１及び第２電極部２２に近づくほど断面積は小さくなる。即ち、第１実施形態における弾性部材１０は、上述した第１方向Ｄ１に対して直交する平面（Ｘ－Ｙ面）で切断したその断面積Ｓ１が、一方の接触面（第１電極部２１の接触面２１ａ）側から他方の接触面（第２電極部２２の接触面２２ａ）側へ向かうに従って変化する形状となっている。 Although the elastic member 10 is formed in a cylindrical shape, the cross section cut along a plane (XY plane) orthogonal to the first direction D1 is, for example, the first electrode portion 21 and the second electrode portion 22. The cross-sectional area at the intermediate point is the largest, and the cross-sectional area becomes smaller as it approaches the first electrode part 21 and the second electrode part 22. That is, the elastic member 10 according to the first embodiment has a cross-sectional area S1 cut along a plane (XY plane) orthogonal to the first direction D1 described above, so that one of the contact surfaces (of the first electrode portion 21). The shape changes from the contact surface 21a) side toward the other contact surface (contact surface 22a of the second electrode portion 22) side.
　次に、図２乃至図４を参照して、本発明の第１実施形態に係る検出装置１００におけるスイッチング動作について説明する。図２は、検出装置１００を押圧操作前後の接触領域２５及び弾性部材１０（弾性部材１１）の変化を示す、正面（－Ｙ側）から見た模式図であり、図２（ａ）は、検出装置１００を押圧操作する前における状態を示し、図２（ｂ）は、検出装置１００を押圧操作している途中の状態を示し、図２（ｃ）は、検出装置１００を最大に押圧操作した状態を示している。図３は、押圧操作前後の接触領域２５及び弾性部材１０（弾性部材１１）の変化を示す、上方（＋Ｚ側）から見た模式図であり、図３（ａ）は、検出装置１００を押圧操作する前における状態を示し、図３（ｂ）は、検出装置１００を押圧操作している途中の状態を示し、図３（ｃ）は、検出装置１００を最大に押圧操作した状態を示している。また、図４は、固定抵抗３１を含む検出装置１００の回路３０を示す回路図の一例である。 Next, the switching operation in the detection apparatus 100 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a schematic view of the detection apparatus 100 as viewed from the front (−Y side), showing changes in the contact area 25 and the elastic member 10 (elastic member 11) before and after the pressing operation, and FIG. FIG. 2 (b) shows a state in the middle of pressing the detection device 100, and FIG. 2 (c) shows a state in which the detection device 100 is pressed to the maximum. Shows the state. FIG. 3 is a schematic view seen from above (+ Z side) showing changes in the contact region 25 and the elastic member 10 (elastic member 11) before and after the pressing operation, and FIG. FIG. 3B shows a state before the detection device 100 is being pressed, and FIG. 3C shows a state where the detection device 100 is pressed to the maximum. Yes. FIG. 4 is an example of a circuit diagram illustrating the circuit 30 of the detection device 100 including the fixed resistor 31.
　図２（ａ）に示すように、検出装置１００を押圧操作する前において、一対の電極部２０（第１電極部２１及び第２電極部２２）は、弾性部材１１の上下の接触領域２５で弾性部材１１に接触している。この時の正面（－Ｙ側）から見た弾性部材１１の形状は、円形のままである。 As shown in FIG. 2A, the pair of electrode portions 20 (first electrode portion 21 and second electrode portion 22) are in the upper and lower contact regions 25 of the elastic member 11 before the detection device 100 is pressed. It is in contact with the elastic member 11. The shape of the elastic member 11 viewed from the front (−Y side) at this time remains circular.
　また、接触領域２５は、円柱状である弾性部材１１の柱面（曲面）と平面で形成された接触面２１ａ及び接触面２２ａとの接触箇所であるため、理想的には線状（線接触）である。しかし、本実施形態においては、導通状態を安定させるため、検出装置１００を押圧操作する前においても一対の電極部２０に圧力が掛かった状態としている。そのため、上面（＋Ｚ側）から見たその形状が、図３（ａ）に示すように、弾性部材１１の延設方向（Ｙ方向）が長手辺となり、短手辺の幅の狭い長方形となっている。また、弾性部材１１全体の上面（＋Ｚ側）から見た形状は、弾性部材１１の延設方向に延びる長方形となっている。 Moreover, since the contact area | region 25 is a contact location of the contact surface 21a and the contact surface 22a formed by the column surface (curved surface) of the elastic member 11 which is a column shape, and is flat, it is ideally linear (line contact) ). However, in this embodiment, in order to stabilize the conduction state, the pressure is applied to the pair of electrode portions 20 even before the detection device 100 is pressed. Therefore, the shape seen from the upper surface (+ Z side) is a rectangle having a narrow side with a short side as the extending direction (Y direction) of the elastic member 11 becomes a long side as shown in FIG. ing. Moreover, the shape seen from the upper surface (+ Z side) of the entire elastic member 11 is a rectangle extending in the extending direction of the elastic member 11.
　次に、検出装置１００が押圧操作されると、図２（ｂ）に示すように、一対の電極部２０（第１電極部２１及び第２電極部２２）が、部材１１を圧縮する。すると、圧縮された弾性部材１１の正面（－Ｙ側）から見た形状は、左右方向に拡がった楕円形状となる。そのため、検出装置１００が押圧操作された後の正面（－Ｙ側）から見た接触領域２５の幅寸法は、検出装置１００が押圧操作される前の幅寸法に比べて長くなる。 Next, when the detection device 100 is pressed, the pair of electrode portions 20 (the first electrode portion 21 and the second electrode portion 22) compress the member 11 as shown in FIG. Then, the shape of the compressed elastic member 11 viewed from the front (−Y side) becomes an elliptical shape that expands in the left-right direction. For this reason, the width dimension of the contact area 25 viewed from the front (−Y side) after the detection device 100 is pressed is longer than the width before the detection device 100 is pressed.
　即ち、圧縮された弾性部材１１の正面（－Ｙ側）から見た形状が、左右方向に拡がった楕円形状となるため、上面（＋Ｚ側）から見た弾性部材１１の長方形の形状は、図３（ｂ）に示すように、弾性部材１１の延設方向に対して直交する方向（左右方向）へ拡がる。 That is, since the shape of the compressed elastic member 11 viewed from the front (−Y side) becomes an elliptical shape expanding in the left-right direction, the rectangular shape of the elastic member 11 viewed from the upper surface (+ Z side) is As shown to 3 (b), it spreads in the direction (left-right direction) orthogonal to the extending direction of the elastic member 11. As shown in FIG.
　また、接触領域２５は、弾性部材１１が押圧されることによって、上面（＋Ｚ側）から見ると、図３（ｂ）に示すように、長方形の短手辺の幅が、押圧操作される前に比べて大きくなる。即ち、接触領域２５の接触面積Ｓ２が大きくなる。 Further, when the elastic member 11 is pressed, the contact area 25 is viewed from the upper surface (+ Z side), as shown in FIG. 3B, before the width of the rectangular short side is pressed. Larger than That is, the contact area S2 of the contact region 25 is increased.
　次に、検出装置１００を更に押圧操作し、検出装置１００を最大に押圧操作した場合には、図２（ｃ）に示すように、一対の電極部２０（第１電極部２１及び第２電極部２２）が、上下方向から弾性部材１１を更に圧縮する。すると、正面（－Ｙ側）から見た圧縮された弾性部材１１の形状は、左右方向に更に拡がった偏平した楕円形状となる。 Next, when the detection device 100 is further pressed and the detection device 100 is pressed to the maximum, as shown in FIG. 2C, the pair of electrode portions 20 (the first electrode portion 21 and the second electrode). The part 22) further compresses the elastic member 11 from the vertical direction. Then, the shape of the compressed elastic member 11 viewed from the front (−Y side) becomes a flat elliptical shape further expanding in the left-right direction.
　また、接触領域２５は、弾性部材１１が更に押圧されることによって、上方（＋Ｚ側）から見たその形状が変化し、図３（ｃ）に示すように、長方形の幅が、更に大きくなる。即ち、接触領域２５の接触面積Ｓ２が更に大きくなる。 Further, when the elastic member 11 is further pressed, the contact region 25 changes its shape as viewed from above (+ Z side), and the width of the rectangle is further increased as shown in FIG. . That is, the contact area S2 of the contact region 25 is further increased.
　このように、検出装置１００を押圧操作する、即ち弾性部材１１を押圧することによって、接触領域２５の接触面積Ｓ２が大きくなる。そのため、弾性部材１１の一対の電極部２０間における抵抗値Ｒ１が小さくなり、その結果、弾性部材１１を押圧する前と後とで、抵抗値Ｒ１の変化率が従来に比べて大きくなる。 In this way, by pressing the detection device 100, that is, by pressing the elastic member 11, the contact area S2 of the contact region 25 is increased. For this reason, the resistance value R1 between the pair of electrode portions 20 of the elastic member 11 decreases, and as a result, the rate of change of the resistance value R1 increases before and after pressing the elastic member 11 as compared to the conventional case.
　また、弾性部材１１を押圧することによって、圧縮された弾性部材１１の正面（－Ｙ側）から見た形状が左右方向に拡がった楕円形状となり、一対の電極部２０間の距離が、より近くなり易いため、弾性部材１１の一対の電極部２０間における抵抗値Ｒ１が小さくなり、抵抗値Ｒ１の変化率がより大きくなる。 Further, by pressing the elastic member 11, the shape viewed from the front (−Y side) of the compressed elastic member 11 becomes an elliptical shape spreading in the left-right direction, and the distance between the pair of electrode portions 20 is closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 11 becomes small, and the rate of change of the resistance value R1 becomes larger.
　検出装置１００をオン・オフの切り替え可能なスイッチ装置として使用する場合、例えば、図４に示すように、その回路は、電極部２０のうちの一方、即ち第１電極部２１に、抵抗値Ｒ０を有する固定抵抗３１の一端が接続され、また、電極部２０のうちの他方、即ち第２電極部２２が接地された回路３０となる。固定抵抗３１の他端には所定の電源電圧Ｖｃｃが印加され、第１電極部２１から出力電圧Ｖｏｕｔが取り出される。 When the detection device 100 is used as a switch device that can be switched on and off, for example, as shown in FIG. 4, the circuit has a resistance value R 0 in one of the electrode portions 20, that is, the first electrode portion 21. The fixed resistor 31 having one end is connected, and the other of the electrode portions 20, that is, the second electrode portion 22 is grounded. A predetermined power supply voltage Vcc is applied to the other end of the fixed resistor 31, and the output voltage Vout is extracted from the first electrode unit 21.
　出力電圧Ｖｏｕｔとしては、電源電圧Ｖｃｃを抵抗値Ｒ０と抵抗値Ｒ１とで分圧した電圧が取り出される。前述したように、弾性部材１０の一対の電極部２０間における抵抗値Ｒ１は、弾性部材１０が一対の電極部２０に挟まれ変形することによって変化する。即ち、弾性部材１０を一対の電極部２０で挟み込み押圧すると弾性部材１０の一対の電極部２０間における抵抗値Ｒ１が小さくなる。 As the output voltage Vout, a voltage obtained by dividing the power supply voltage Vcc by the resistance value R0 and the resistance value R1 is taken out. As described above, the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 changes as the elastic member 10 is sandwiched between the pair of electrode portions 20 and deformed. That is, when the elastic member 10 is sandwiched and pressed between the pair of electrode portions 20, the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 decreases.
　検出装置１００がオフからオンに切り替わる時の弾性部材１０の一対の電極部２０間における抵抗値Ｒ１及び抵抗値Ｒ０は、オン・オフの切り替えの閾値となる出力電圧（閾値電圧）に応じて設定される。即ち、一対の電極部２０の間隔が所定の間隔になった時の出力電圧を閾値電圧として、オン・オフの切り替えを行なうことができる。例えば、弾性部材１０の一対の電極部２０間における抵抗値Ｒ１が固定抵抗３１の抵抗値Ｒ０と同じになった時に検出装置１００がオフからオンに切り替わるように設定することができる。即ち、Ｖｏｕｔ＝Ｖｃｃ／２となった時、検出装置１００がオフからオンに切り替わる。この場合、閾値電圧は、Ｖｃｃ／２となる。 The resistance value R1 and the resistance value R0 between the pair of electrode portions 20 of the elastic member 10 when the detection device 100 is switched from OFF to ON are set according to an output voltage (threshold voltage) serving as a threshold for switching ON / OFF. Is done. That is, on / off switching can be performed using the output voltage when the distance between the pair of electrode portions 20 becomes a predetermined distance as the threshold voltage. For example, the detection device 100 can be set to be switched from OFF to ON when the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 becomes the same as the resistance value R0 of the fixed resistor 31. That is, when Vout = Vcc / 2, the detection device 100 is switched from off to on. In this case, the threshold voltage is Vcc / 2.
　尚、弾性部材１０のばね定数の調整は、前述した感圧導電性を有する材料におけるエラストマーの量によって自由に設定することができる。また、弾性部材１０の一対の電極部２０間における抵抗値Ｒ１の大きさは、同じく感圧導電性を有する材料におけるカーボンの粒子の量によって自由に設定することができる。 In addition, adjustment of the spring constant of the elastic member 10 can be freely set by the amount of the elastomer in the material having the pressure-sensitive conductivity described above. Further, the magnitude of the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 can be freely set by the amount of carbon particles in the material having the same pressure-sensitive conductivity.
　［第１実施形態の第１変形例］
　次に、図５を参照して、本発明の第１実施形態の第１変形例に係る検出装置１１０の構造について説明する。図５は、検出装置１１０の外観を示す斜視図である。尚、検出装置１１０の構造は、第１実施形態の検出装置１００の構造に対して、弾性部材１０の形状が異なるだけであるため、検出装置１００と同様の箇所については、その説明を省略する。 [First Modification of First Embodiment]
Next, with reference to FIG. 5, the structure of the detection apparatus 110 which concerns on the 1st modification of 1st Embodiment of this invention is demonstrated. FIG. 5 is a perspective view showing an appearance of the detection device 110. In addition, since the structure of the detection apparatus 110 differs only in the shape of the elastic member 10 with respect to the structure of the detection apparatus 100 of 1st Embodiment, the description is abbreviate | omitted about the same location as the detection apparatus 100. .
　検出装置１１０は、図５に示すように、弾性部材１０と、弾性部材１０と接触する一対の電極部２０と、を備えている。 As shown in FIG. 5, the detection device 110 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10.
　検出装置１１０における弾性部材１０は柱状であると共に、そのＸ－Ｚ面での断面形状が半円状に形成されている。以下、Ｘ－Ｚ面での断面形状が半円状に形成された弾性部材１０を弾性部材１２とする。検出装置１００では、この半円柱状の弾性部材１１の柱面（曲面）の部分が、接触面２１ａに接し、弾性部材１２の平坦な面が、接触面２２ａに接しており、接触面２１ａ及び接触面２２ａによって弾性部材１２が挟持されている。尚、検出装置１１０における弾性部材１０は、断面形状が半円形となる弾性部材１２で形成されているが、断面形状が半楕円形となっていても良い。 The elastic member 10 in the detection device 110 has a columnar shape, and its cross-sectional shape on the XZ plane is formed in a semicircular shape. Hereinafter, the elastic member 10 having a semicircular cross-sectional shape on the XZ plane is referred to as an elastic member 12. In the detection device 100, the column surface (curved surface) portion of the semi-cylindrical elastic member 11 is in contact with the contact surface 21a, and the flat surface of the elastic member 12 is in contact with the contact surface 22a. The elastic member 12 is clamped by the contact surface 22a. In addition, although the elastic member 10 in the detection apparatus 110 is formed of the elastic member 12 having a semicircular cross-sectional shape, the cross-sectional shape may be a semi-elliptical shape.
　検出装置１００の場合と同様に、検出装置１１０を押圧操作する、即ち弾性部材１２を押圧することによって、弾性部材１２の上側と第１電極部２１との間の接触領域２５の接触面積Ｓ２が大きくなる。また、弾性部材１２を押圧することによって、圧縮された弾性部材１２の正面（－Ｙ側）から見た形状が左右方向に拡がり、一対の電極部２０間の距離がより近くなり易い。そのため、弾性部材１２の一対の電極部２０間における抵抗値Ｒ１が小さくなり、その結果、弾性部材１２を押圧する前と後とで、抵抗値Ｒ１の変化率が従来に比べて大きくなる。 As in the case of the detection device 100, by pressing the detection device 110, that is, by pressing the elastic member 12, the contact area S <b> 2 of the contact region 25 between the upper side of the elastic member 12 and the first electrode portion 21 is increased. growing. Further, by pressing the elastic member 12, the shape of the compressed elastic member 12 viewed from the front (−Y side) expands in the left-right direction, and the distance between the pair of electrode portions 20 tends to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 12 becomes small, and as a result, the rate of change of the resistance value R1 becomes large before and after the elastic member 12 is pressed compared to the conventional case.
　尚、検出装置１００の場合と異なり、弾性部材１２の下側と第２電極部２２との間の接触面積は、ほとんど変化しない。従って、弾性部材１２の上側と第１電極部２１との間の接触領域２５による接触面積Ｓ２の変化のみとなるため、接触面積Ｓ２の変化に伴う抵抗値Ｒ１の減少による効果は、検出装置１００の場合より小さくなる。しかし、弾性部材１２の一方の面が平坦な面となっているので、弾性部材１２を装置内に配置し易くなる。 Note that, unlike the detection apparatus 100, the contact area between the lower side of the elastic member 12 and the second electrode portion 22 hardly changes. Accordingly, since only the change in the contact area S2 due to the contact region 25 between the upper side of the elastic member 12 and the first electrode portion 21 occurs, the effect of the decrease in the resistance value R1 due to the change in the contact area S2 is the detection device 100. It becomes smaller than the case of. However, since one surface of the elastic member 12 is a flat surface, the elastic member 12 can be easily placed in the apparatus.
　［第１実施形態の第２変形例］
　次に、図６を参照して、本発明の第１実施形態の第２変形例に係る検出装置１２０の構造について説明する。図６は、検出装置１２０の外観を示す斜視図である。尚、検出装置１２０の構造は、第１実施形態の検出装置１００の構造に対して、弾性部材１０の形状が異なるだけであるため、検出装置１００と同様の箇所については、その説明を省略する。 [Second Modification of First Embodiment]
Next, with reference to FIG. 6, the structure of the detection apparatus 120 which concerns on the 2nd modification of 1st Embodiment of this invention is demonstrated. FIG. 6 is a perspective view showing the appearance of the detection device 120. In addition, since the structure of the detection apparatus 120 differs only in the shape of the elastic member 10 with respect to the structure of the detection apparatus 100 of 1st Embodiment, the description is abbreviate | omitted about the same location as the detection apparatus 100. .
　検出装置１２０は、図６に示すように、弾性部材１０と、弾性部材１０と接触する一対の電極部２０と、を備えている。弾性部材１０は、第１方向Ｄ１に対して直交する平面（Ｘ－Ｙ平面）で切断した弾性部材１０の断面積Ｓ１が、一方の接触面２１ａ側から他方の接触面２２ａ側へ向かうに従って変化するような形状である。 As shown in FIG. 6, the detection device 120 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10. In the elastic member 10, the cross-sectional area S1 of the elastic member 10 cut along a plane orthogonal to the first direction D1 (XY plane) changes as it goes from one contact surface 21a side to the other contact surface 22a side. It is a shape to do.
　検出装置１２０における弾性部材１０は柱状であると共に、そのＸ－Ｚ面での断面形状が多角形に形成されている。検出装置１２０では、弾性部材１０は、断面形状が五角形である。即ち、弾性部材１０は五角柱状に形成されている。以下、五角柱状に形成された弾性部材１０を弾性部材１３とする。この五角形柱状である弾性部材１３の上側の部分が接触面２１ａに接し、弾性部材１３の下側の平坦な面が接触面２２ａに接しており、接触面２１ａ及び接触面２２ａによって弾性部材１３が挟持されている。 The elastic member 10 in the detection device 120 has a columnar shape, and its cross-sectional shape on the XZ plane is formed in a polygon. In the detection device 120, the elastic member 10 has a pentagonal cross-sectional shape. That is, the elastic member 10 is formed in a pentagonal column shape. Hereinafter, the elastic member 10 formed in a pentagonal column shape is referred to as an elastic member 13. The upper part of the pentagonal columnar elastic member 13 is in contact with the contact surface 21a, the lower flat surface of the elastic member 13 is in contact with the contact surface 22a, and the elastic member 13 is formed by the contact surface 21a and the contact surface 22a. It is pinched.
　検出装置１００の場合と同様に、検出装置１２０を押圧操作する、即ち弾性部材１３を押圧することによって、圧縮された弾性部材１３の正面（－Ｙ側）から見た形状が左右方向に拡がり、一対の電極部２０間の距離がより近くなり易い。そのため、弾性部材１３の一対の電極部２０間における抵抗値Ｒ１が小さくなり、その結果、弾性部材１３を押圧する前と後とで、抵抗値Ｒ１の変化率が従来に比べて大きくなる。 As in the case of the detection device 100, by pressing the detection device 120, that is, by pressing the elastic member 13, the shape of the compressed elastic member 13 viewed from the front (−Y side) expands in the left-right direction, The distance between the pair of electrode portions 20 tends to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 13 decreases, and as a result, the rate of change of the resistance value R1 increases before and after pressing the elastic member 13 as compared with the conventional case.
　弾性部材１３の形状を断面形状が奇数角の多角形とした場合、弾性部材１３の下側と第２電極部２２との間の接触面積はほとんど変化しないが、弾性部材１３の上側と第１電極部２１との間の接触面積Ｓ２は、検出装置１００の場合と同様に変化する。そのため、弾性部材１３と一対の電極部２０との接触面積Ｓ２の変化に伴う抵抗値Ｒ１の減少による効果が得られる。 When the shape of the elastic member 13 is a polygon having an odd-numbered cross section, the contact area between the lower side of the elastic member 13 and the second electrode portion 22 hardly changes, but the upper side of the elastic member 13 and the first The contact area S <b> 2 with the electrode unit 21 changes in the same manner as in the detection device 100. Therefore, an effect is obtained by reducing the resistance value R1 associated with the change in the contact area S2 between the elastic member 13 and the pair of electrode portions 20.
　検出装置１２０における弾性部材１３は、断面形状が五角形の角柱状に形成されているが、断面形状が三角形等の他の奇数角の多多角形であっても良い。尚、断面形状が奇数角の多角形の場合、平らな面の側を下側に配置することができる。 The elastic member 13 in the detection device 120 is formed in a prismatic shape having a pentagonal cross-sectional shape, but may be a polygonal shape having other odd-numbered angles such as a triangular shape. When the cross-sectional shape is an odd-numbered polygon, the flat surface side can be arranged on the lower side.
　また、弾性部材１３の形状を、断面形状が六角形等の偶数角の多角形とすることも可能である。断面形状が偶数角の多角形の場合、平らな面を下側及び上側の両方に配置することができる。尚、断面形状が正方形の場合は、第１方向Ｄ１に対して直交する平面で切断した弾性部材１０の断面積が、一方の接触面２１ａ側から他方の接触面２２ａ側へ向かうに従ってほとんど変化しない。従って、断面形状が正方形である角柱状の弾性部材１０の場合は、本発明の対象に含まれない。 The shape of the elastic member 13 may be a polygon with an even angle such as a hexagonal cross section. When the cross-sectional shape is an even-numbered polygon, flat surfaces can be arranged on both the lower side and the upper side. When the cross-sectional shape is a square, the cross-sectional area of the elastic member 10 cut along a plane orthogonal to the first direction D1 hardly changes as it goes from the one contact surface 21a side to the other contact surface 22a side. . Accordingly, the prismatic elastic member 10 having a square cross-sectional shape is not included in the subject of the present invention.
　尚、弾性部材１３の形状を断面形状が偶数角の多角形とした場合、弾性部材１３の形状を断面形状が奇数角の多角形とした場合と異なり、弾性部材１３の上側と第１電極部２１との間、及び弾性部材１３の下側と第２電極部２２との間の接触面積は、共にほとんど変化しない。そのため、弾性部材１３と一対の電極部２０との接触面積の変化に伴う抵抗値Ｒ１の減少による効果はほとんどない。しかし、弾性部材１３の両方の面が平坦な面となっているので、弾性部材１３を装置内に配置し易くなる。 When the shape of the elastic member 13 is a polygon having an even-numbered cross section, the shape of the elastic member 13 is different from the case where the shape of the elastic member 13 is a polygon having an odd-numbered cross section. 21 and the contact area between the lower side of the elastic member 13 and the second electrode portion 22 hardly change. Therefore, there is almost no effect due to the decrease in the resistance value R <b> 1 due to the change in the contact area between the elastic member 13 and the pair of electrode portions 20. However, since both surfaces of the elastic member 13 are flat surfaces, the elastic member 13 can be easily placed in the apparatus.
　［第１実施形態の第３変形例］
　次に、図７を参照して、本発明の第１実施形態の第３変形例に係る検出装置１３０の構造について説明する。図７は、検出装置１３０の外観を示す斜視図である。尚、検出装置１３０の構造は、第１実施形態の検出装置１００の構造に対して、弾性部材１０の内部の構造が異なるだけであるため、検出装置１００と同様の箇所については、その説明を省略する。 [Third Modification of First Embodiment]
Next, with reference to FIG. 7, the structure of the detection apparatus 130 which concerns on the 3rd modification of 1st Embodiment of this invention is demonstrated. FIG. 7 is a perspective view showing the external appearance of the detection device 130. Note that the structure of the detection device 130 is different from the structure of the detection device 100 of the first embodiment only in the internal structure of the elastic member 10, and therefore, the same parts as the detection device 100 will be described. Omitted.
　検出装置１３０は、図７に示すように、弾性部材１０と、弾性部材１０と接触する一対の電極部２０と、を備えている。 As shown in FIG. 7, the detection device 130 includes an elastic member 10 and a pair of electrode portions 20 that are in contact with the elastic member 10.
　検出装置１３０における弾性部材１０は柱状であると共に、検出装置１００と同様に、そのＸ－Ｚ面での断面形状が円形に形成されている。しかし、検出装置１００の弾性部材１１と異なり、内部には微小な空間である複数の空隙部１４ａが形成されている。尚、空隙部１４ａは、例えば、気泡であり、その断面形状が円形であってもその他の形状であっても良い。 The elastic member 10 in the detection device 130 has a columnar shape, and similarly to the detection device 100, the cross-sectional shape on the XZ plane is circular. However, unlike the elastic member 11 of the detection device 100, a plurality of gaps 14a, which are minute spaces, are formed inside. In addition, the space | gap part 14a is a bubble, for example, The cross-sectional shape may be circular, or another shape may be sufficient as it.
　検出装置１３０では、弾性部材１４の内部に複数の空隙部１４ａを形成させたため、一対の電極部２０により弾性部材１４が押圧された際に、空隙部１４ａに上下から圧力が掛かり、空隙部１４ａが圧縮されて、空隙部１４ａの上下の面が接触し、弾性部材１４内の電気的な導通経路が拡がる。その結果、一対の電極部２０間の弾性部材１４の抵抗値Ｒ１が更に小さくなるため、抵抗値Ｒ１の変化率を更に大きくすることができる。 In the detection device 130, since the plurality of gap portions 14a are formed inside the elastic member 14, when the elastic member 14 is pressed by the pair of electrode portions 20, pressure is applied to the gap portion 14a from above and below, and the gap portion 14a. Is compressed, the upper and lower surfaces of the gap portion 14a come into contact with each other, and the electrical conduction path in the elastic member 14 is expanded. As a result, the resistance value R1 of the elastic member 14 between the pair of electrode portions 20 is further reduced, so that the rate of change of the resistance value R1 can be further increased.
　尚、検出装置１３０における弾性部材１４は、その内部に複数の空隙部１４ａを形成させたが、弾性部材１４の延設方向（Ｙ方向）と同じ方向に貫通した、１つ又は複数の孔を形成させるようにしても良い。 The elastic member 14 in the detection device 130 has a plurality of voids 14a formed therein, but has one or more holes penetrating in the same direction as the extending direction (Y direction) of the elastic member 14. You may make it form.
　以下、本第１実施形態としたことによる効果について説明する。 Hereinafter, the effect obtained by adopting the first embodiment will be described.
　検出装置１００は、一方の接触面２１ａ側から他方の接触面２２ａ側へ向かうに従って断面積Ｓ１が変化するような形状を弾性部材１０が有しているため、弾性部材１０が押圧された際に弾性部材１０と電極部２０との接触領域２５における接触面積Ｓ２が拡がる。そのため、弾性部材１０の一対の電極部２０間における抵抗値Ｒ１が小さくなり、そのことによって抵抗値Ｒ１の変化率を大きくすることができる。その結果、スイッチング動作の有無判定のための閾値に十分な余裕を持たせることができる。 Since the elastic member 10 has a shape in which the cross-sectional area S1 changes from the one contact surface 21a side toward the other contact surface 22a side, the detection device 100 has a shape when the elastic member 10 is pressed. The contact area S2 in the contact region 25 between the elastic member 10 and the electrode part 20 is expanded. For this reason, the resistance value R1 between the pair of electrode portions 20 of the elastic member 10 is reduced, whereby the rate of change of the resistance value R1 can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
　また、柱状の弾性部材１０の延設方向に対して直交する方向に（柱面に対向して）電極部２０が配置されているので、電極部２０と弾性部材１０との接触領域２５における接触面積Ｓ２を容易に拡大させることができる。 Further, since the electrode portion 20 is disposed in a direction orthogonal to the extending direction of the columnar elastic member 10 (opposite the column surface), the contact in the contact region 25 between the electrode portion 20 and the elastic member 10 is achieved. The area S2 can be easily enlarged.
　また、弾性部材１１のＸ－Ｚ平面で切断した時の断面形状が円又は楕円であるため、一対の電極部２０それぞれと弾性部材１１との接触領域２５における接触面積Ｓ２を効率良く拡大させることができる。 Further, since the cross-sectional shape of the elastic member 11 cut along the XZ plane is a circle or an ellipse, the contact area S2 in the contact region 25 between each of the pair of electrode portions 20 and the elastic member 11 can be efficiently expanded. Can do.
　また、検出装置１１０は、弾性部材１１のＸ－Ｚ平面で切断した時の弾性部材１２の断面形状が半円又は半楕円であるため、弾性部材１２の一方の面が平坦な面となっており、弾性部材１２を装置内に配置し易くなる。 Further, in the detection device 110, since the cross-sectional shape of the elastic member 12 when cut along the XZ plane of the elastic member 11 is a semicircle or a semi-ellipse, one surface of the elastic member 12 is a flat surface. Thus, the elastic member 12 can be easily arranged in the apparatus.
　また、検出装置１２０は、弾性部材１１のＸ－Ｚ平面で切断した時の弾性部材１３の断面形状が多角形であるため、弾性部材１３の少なくとも１つの面を平坦な面とすることができ、弾性部材１３を装置内に配置し易くなる。 Further, since the detection device 120 has a polygonal cross-sectional shape when cut along the XZ plane of the elastic member 11, at least one surface of the elastic member 13 can be a flat surface. It becomes easy to arrange the elastic member 13 in the apparatus.
　また、検出装置１３０は、弾性部材１４の内部に複数の空隙部１４ａを形成させたため、弾性部材１４が押圧された際に、空隙部１４ａに上下から圧力が掛かり、空隙部１４ａが圧縮されて、空隙部１４ａの上下の面が接触し、弾性部材１４内の電気的な導通経路が拡がる。その結果、一対の電極部２０間の弾性部材１４の抵抗値Ｒ１が更に小さくなるため、抵抗値Ｒ１の変化率を更に大きくすることができる。 In addition, since the detection device 130 has a plurality of gaps 14a formed inside the elastic member 14, when the elastic member 14 is pressed, pressure is applied to the gap 14a from above and below, and the gap 14a is compressed. The upper and lower surfaces of the gap portion 14a come into contact with each other, and the electrical conduction path in the elastic member 14 is expanded. As a result, the resistance value R1 of the elastic member 14 between the pair of electrode portions 20 is further reduced, so that the rate of change of the resistance value R1 can be further increased.
　［第２実施形態］
　次に、図８を参照して、本発明の第２実施形態に係る検出装置２００の構造について説明する。図８は、検出装置２００の外観を示す斜視図である。尚、検出装置２００の構造は、第１実施形態の検出装置１００の構造に対して、弾性部材１５の形状が異なるだけであるため、検出装置１００と同様の箇所については、その説明を省略する。 [Second Embodiment]
Next, the structure of the detection apparatus 200 according to the second embodiment of the present invention will be described with reference to FIG. FIG. 8 is a perspective view showing the appearance of the detection device 200. In addition, since the structure of the detection apparatus 200 differs only in the shape of the elastic member 15 with respect to the structure of the detection apparatus 100 of 1st Embodiment, the description is abbreviate | omitted about the same location as the detection apparatus 100. .
　検出装置２００は、図８に示すように、弾性部材１５と、弾性部材１５と接触する一対の電極部２０と、を備えている。 As shown in FIG. 8, the detection device 200 includes an elastic member 15 and a pair of electrode portions 20 that come into contact with the elastic member 15.
　検出装置２００における弾性部材１５は、一対の電極部２０に対向する箇所の少なくとも一方は略球面状である。従って、弾性部材１５は、上述した電極部２０が弾性部材１５に接触した状態で接触面２１ａ及び接触面２２ａ同士が対向する方向である第１方向Ｄ１に対して直交する平面（Ｘ－Ｙ平面）で切断した弾性部材１５の断面積Ｓ１が、一方の接触面２１ａ側から他方の接触面２２ａ側へ向かうに従って変化するような部材である。 The elastic member 15 in the detection device 200 has a substantially spherical shape at least one of the portions facing the pair of electrode portions 20. Therefore, the elastic member 15 has a plane (XY plane) orthogonal to the first direction D1, which is the direction in which the contact surface 21a and the contact surface 22a face each other in a state where the electrode portion 20 is in contact with the elastic member 15. The cross-sectional area S1 of the elastic member 15 cut in step) is a member that changes from the one contact surface 21a side toward the other contact surface 22a side.
　検出装置２００では、弾性部材１５は、球状に形成されている。以下、球状に形成された弾性部材１５を、弾性部材１６とする。そして、この球状の弾性部材１６の上側の曲面の部分が接触面２１ａに接し、弾性部材１６の下側の曲面の部分が接触面２２ａに接しており、接触面２１ａ及び接触面２２ａによって弾性部材１６が挟持されている。 In the detection device 200, the elastic member 15 is formed in a spherical shape. Hereinafter, the elastic member 15 formed in a spherical shape is referred to as an elastic member 16. The upper curved surface portion of the spherical elastic member 16 is in contact with the contact surface 21a, and the lower curved surface portion of the elastic member 16 is in contact with the contact surface 22a, and the elastic member is formed by the contact surface 21a and the contact surface 22a. 16 is pinched.
　次に、図９及び図１０を参照して、本発明の第２実施形態に係る検出装置２００におけるスイッチング動作について説明する。図９は、検出装置２００を押圧操作前後の接触領域２５及び弾性部材１５（弾性部材１６）の変化を示す、正面（－Ｙ側）から見た模式図であり、図９（ａ）は、検出装置２００を押圧操作する前における状態を示し、図９（ｂ）は、検出装置２００を押圧操作している途中の状態を示し、図９（ｃ）は、検出装置２００を最大に押圧操作した状態を示している。図１０は、押圧操作前後の接触領域２５及び弾性部材１５（弾性部材１６）の変化を示す、上方（＋Ｚ側）から見た模式図であり、図１０（ａ）は、検出装置２００を押圧操作する前における状態を示し、図１０（ｂ）は、検出装置２００を押圧操作している途中の状態を示し、図１０（ｃ）は、検出装置２００を最大に押圧操作した状態を示している。 Next, with reference to FIG. 9 and FIG. 10, a switching operation in the detection apparatus 200 according to the second embodiment of the present invention will be described. FIG. 9 is a schematic view of the detection device 200 as viewed from the front (−Y side), showing changes in the contact area 25 and the elastic member 15 (elastic member 16) before and after the pressing operation, and FIG. FIG. 9B shows a state before the detection device 200 is pressed, FIG. 9B shows a state where the detection device 200 is being pressed, and FIG. 9C shows the detection device 200 being pressed to the maximum. Shows the state. FIG. 10 is a schematic view seen from above (+ Z side) showing changes in the contact area 25 and the elastic member 15 (elastic member 16) before and after the pressing operation. FIG. FIG. 10B shows a state before the detection device 200 is being pressed, and FIG. 10C shows a state where the detection device 200 is pressed to the maximum. Yes.
　図９（ａ）に示すように、検出装置２００を押圧操作する前において、一対の電極部２０（第１電極部２１及び第２電極部２２）は、弾性部材１６の上下の接触領域２５で弾性部材１６に接触している。この時の正面（－Ｙ側）から見た弾性部材１６の形状は、円形のままである。 As shown in FIG. 9A, the pair of electrode parts 20 (first electrode part 21 and second electrode part 22) are in the upper and lower contact areas 25 of the elastic member 16 before the detection device 200 is pressed. It is in contact with the elastic member 16. The shape of the elastic member 16 viewed from the front (−Y side) at this time remains circular.
　また、接触領域２５は、弾性部材１６の曲面上にあるため、上面（＋Ｚ側）から見たその形状が、図１０（ａ）に示すように、小さな円形となっている。また、弾性部材１６の上面（＋Ｚ側）から見た形状は、第１電極部２１の下側において円形となっている。 Further, since the contact region 25 is on the curved surface of the elastic member 16, the shape seen from the upper surface (+ Z side) is a small circle as shown in FIG. 10 (a). Further, the shape of the elastic member 16 viewed from the upper surface (+ Z side) is a circle below the first electrode portion 21.
　次に、検出装置２００が押圧操作されると、図９（ｂ）に示すように、一対の電極部２０（第１電極部２１及び第２電極部２２）が、弾性部材１６の上下の接触領域２５で弾性部材１６を圧縮する。すると、圧縮された弾性部材１６の正面（－Ｙ側）から見た形状は、左右方向に拡がった楕円形状となる。 Next, when the detection device 200 is pressed, as shown in FIG. 9B, the pair of electrode portions 20 (the first electrode portion 21 and the second electrode portion 22) are in contact with the upper and lower sides of the elastic member 16. The elastic member 16 is compressed in the region 25. Then, the shape of the compressed elastic member 16 viewed from the front (−Y side) becomes an elliptical shape that expands in the left-right direction.
　圧縮された弾性部材１６の正面（－Ｙ側）から見た形状が、左右方向に拡がった楕円形状となるため、上面（＋Ｚ側）から見た弾性部材１６の円形状は、図１０（ｂ）に示すように、より大きな直径を有する円形状となる。 Since the shape of the compressed elastic member 16 viewed from the front (−Y side) is an elliptical shape expanding in the left-right direction, the circular shape of the elastic member 16 viewed from the upper surface (+ Z side) is as shown in FIG. As shown in (), a circular shape having a larger diameter is obtained.
　また、接触領域２５は、弾性部材１６が更に押圧されることによって、上面（＋Ｚ側）から見たその形状が変化し、図１０（ｂ）に示すように、その円形の直径が、押圧操作される前に比べて大きくなる。即ち、接触領域２５の接触面積Ｓ２が大きくなる。 Further, when the elastic member 16 is further pressed, the contact region 25 changes its shape as viewed from the upper surface (+ Z side). As shown in FIG. It will be bigger than before. That is, the contact area S2 of the contact region 25 is increased.
　次に、検出装置２００を更に押圧操作し、検出装置２００を最大に押圧操作した場合には、図９（ｃ）に示すように、一対の電極部２０（第１電極部２１及び第２電極部２２）が、弾性部材１６の上下の接触領域２５で弾性部材１６を更に圧縮する。すると、圧縮された弾性部材１６の正面（－Ｙ側）から見た形状は、左右方向に更に拡がった偏平した楕円形状となる。 Next, when the detection device 200 is further pressed and the detection device 200 is pressed to the maximum, as shown in FIG. 9C, the pair of electrode portions 20 (the first electrode portion 21 and the second electrode). The part 22) further compresses the elastic member 16 in the upper and lower contact areas 25 of the elastic member 16. Then, the shape of the compressed elastic member 16 viewed from the front (−Y side) becomes a flat elliptical shape that further expands in the left-right direction.
　また、接触領域２５は、弾性部材１６が更に押圧されることによって、上面（＋Ｚ側）から見たその形状が変化し、図１０（ｃ）に示すように、その円形の直径が、更に大きくなる。即ち、接触領域２５の接触面積Ｓ２が更に大きくなる。 Further, when the elastic member 16 is further pressed, the contact region 25 changes its shape as viewed from the upper surface (+ Z side), and the circular diameter is further increased as shown in FIG. Become. That is, the contact area S2 of the contact region 25 is further increased.
　このように、検出装置２００を押圧操作する、即ち弾性部材１６を押圧することによって、接触領域２５の接触面積Ｓ２が大きくなる。そのため、弾性部材１６の一対の電極部２０間における抵抗値Ｒ１が小さくなり、その結果、弾性部材１６を押圧する前と後とで、抵抗値Ｒ１の変化率が従来に比べて大きくなる。 Thus, by pressing the detection device 200, that is, by pressing the elastic member 16, the contact area S2 of the contact region 25 is increased. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 16 becomes small, and as a result, the rate of change of the resistance value R1 becomes large before and after the elastic member 16 is pressed compared to the conventional case.
　また、弾性部材１６を押圧することによって、圧縮された弾性部材１６の正面（－Ｙ側）から見た形状が左右方向に拡がった楕円形状となり、一対の電極部２０間の距離が、より近くなり易いため、弾性部材１６の一対の電極部２０間における抵抗値Ｒ１が小さくなり、抵抗値Ｒ１の変化率がより大きくなる。 Further, by pressing the elastic member 16, the shape seen from the front (−Y side) of the compressed elastic member 16 becomes an elliptical shape spreading in the left-right direction, and the distance between the pair of electrode portions 20 is closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 16 becomes small, and the rate of change of the resistance value R1 becomes larger.
　［第２実施形態の第１変形例］
　次に、図１１を参照して、本発明の第２実施形態の第１変形例に係る検出装置２１０の構造について説明する。図１１は、検出装置２１０の外観を示す斜視図である。尚、検出装置２１０の構造は、第２実施形態の検出装置２００の構造に対して、弾性部材１５の形状が異なるだけであるため、検出装置２００と同様の箇所については、その説明を省略する。 [First Modification of Second Embodiment]
Next, with reference to FIG. 11, the structure of the detection apparatus 210 which concerns on the 1st modification of 2nd Embodiment of this invention is demonstrated. FIG. 11 is a perspective view showing the external appearance of the detection device 210. In addition, since the structure of the detection apparatus 210 differs only in the shape of the elastic member 15 with respect to the structure of the detection apparatus 200 of 2nd Embodiment, the description is abbreviate | omitted about the same location as the detection apparatus 200. .
　検出装置２１０は、図１１に示すように、弾性部材１５と、弾性部材１５と接触する一対の電極部２０と、を備えている。 As shown in FIG. 11, the detection device 210 includes an elastic member 15 and a pair of electrode portions 20 that are in contact with the elastic member 15.
　検出装置２１０における弾性部材１５は一方に平面部１７ａを有する半球状である。以下、半球状に形成された弾性部材１５を、弾性部材１７とする。検出装置２１０では、この半球状の弾性部材１７の曲面の部分が、接触面２１ａに接し、弾性部材１７の平坦な面である平面部１７ａが、接触面２２ａに接しており、接触面２１ａ及び接触面２２ａによって弾性部材１７が挟持されている。 The elastic member 15 in the detection device 210 is hemispherical having a flat portion 17a on one side. Hereinafter, the hemispherical elastic member 15 is referred to as an elastic member 17. In the detection device 210, the curved surface portion of the hemispherical elastic member 17 is in contact with the contact surface 21a, and the flat portion 17a, which is a flat surface of the elastic member 17, is in contact with the contact surface 22a. The elastic member 17 is clamped by the contact surface 22a.
　検出装置２００の場合と同様に、検出装置２１０を押圧操作する、即ち弾性部材１７を押圧することによって、弾性部材１７の上側と第１電極部２１との間の接触領域２５の接触面積Ｓ２が大きくなる。また、弾性部材１７を押圧することによって、圧縮された弾性部材１７の正面（－Ｙ側）から見た形状が左右方向に拡がり、一対の電極部２０間の距離がより近くなり易い。そのため、弾性部材１７の一対の電極部２０間における抵抗値Ｒ１が小さくなり、その結果、弾性部材１７を押圧する前と後とで、抵抗値Ｒ１の変化率が従来に比べて大きくなる。 As in the case of the detection device 200, by pressing the detection device 210, that is, by pressing the elastic member 17, the contact area S <b> 2 of the contact region 25 between the upper side of the elastic member 17 and the first electrode portion 21 is increased. growing. Further, by pressing the elastic member 17, the shape of the compressed elastic member 17 viewed from the front (−Y side) expands in the left-right direction, and the distance between the pair of electrode portions 20 tends to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 17 becomes small, and as a result, the rate of change of the resistance value R1 becomes large before and after the elastic member 17 is pressed compared to the conventional case.
　尚、検出装置２００の場合と異なり、弾性部材１７の下側と第２電極部２２との間の接触面積は、ほとんど変化しない。従って、弾性部材１７の上側と第１電極部２１との間の接触領域２５による接触面積Ｓ２の変化のみとなるため、接触面積Ｓ２の変化に伴う抵抗値Ｒ１の減少による効果は、検出装置２００の場合より小さくなる。しかし、弾性部材１７の一方の面が平坦な面となっているので、弾性部材１７を装置内に配置し易くなる。 Note that, unlike the detection apparatus 200, the contact area between the lower side of the elastic member 17 and the second electrode portion 22 hardly changes. Accordingly, since only the change in the contact area S2 due to the contact region 25 between the upper side of the elastic member 17 and the first electrode portion 21 is achieved, the effect of the decrease in the resistance value R1 due to the change in the contact area S2 is the detection device 200. It becomes smaller than the case of. However, since one surface of the elastic member 17 is a flat surface, the elastic member 17 can be easily arranged in the apparatus.
　以下、本第２実施形態としたことによる効果について説明する。 Hereinafter, the effect obtained by adopting the second embodiment will be described.
　検出装置２００は、弾性部材１５の少なくとも一方が略球面状であるため、当該少なくとも一方の電極部２０と弾性部材１５との接触領域２５における接触面積Ｓ２を、より効率良く拡大させることができる。 In the detection apparatus 200, since at least one of the elastic members 15 has a substantially spherical shape, the contact area S2 in the contact region 25 between the at least one electrode portion 20 and the elastic member 15 can be expanded more efficiently.
　また、弾性部材１６が球状であるため、弾性部材１６の球面部の２箇所を一対の電極部２０それぞれに対向させることができる。そのため、一対の電極部２０それぞれと弾性部材１６との接触領域２５における接触面積Ｓ２を、更に効率良く拡大させることができる。 Further, since the elastic member 16 is spherical, two portions of the spherical portion of the elastic member 16 can be made to face each of the pair of electrode portions 20. Therefore, the contact area S <b> 2 in the contact region 25 between each of the pair of electrode portions 20 and the elastic member 16 can be expanded more efficiently.
　また、検出装置２１０は、弾性部材１７が平面部１７ａを有する半球状であるため、弾性部材１７の一方の面が平坦な面となっており、弾性部材１７を装置内に配置し易くなる。 Further, in the detection device 210, since the elastic member 17 is hemispherical having the flat portion 17a, one surface of the elastic member 17 is a flat surface, and the elastic member 17 is easily arranged in the device.
　［第３実施形態］
　次に、図１２を参照して、本発明の第３実施形態に係る検出装置３００の構造について説明する。図１２は、検出装置３００の外観を示す斜視図である。尚、検出装置３００の構造は、第１実施形態の検出装置１００の構造に対して、弾性部材１９の形状が異なるだけであるため、検出装置１００と同様の箇所については、その説明を省略する。 [Third Embodiment]
Next, with reference to FIG. 12, the structure of the detection apparatus 300 which concerns on 3rd Embodiment of this invention is demonstrated. FIG. 12 is a perspective view showing an external appearance of the detection apparatus 300. In addition, since the structure of the detection apparatus 300 differs only in the shape of the elastic member 19 with respect to the structure of the detection apparatus 100 of 1st Embodiment, the description is abbreviate | omitted about the same location as the detection apparatus 100. .
　検出装置３００は、図１２に示すように、弾性部材１９と、弾性部材１９と接触する一対の電極部２０と、を備えている。 As shown in FIG. 12, the detection device 300 includes an elastic member 19 and a pair of electrode portions 20 that are in contact with the elastic member 19.
　検出装置３００における弾性部材１９は、一方に底面１９ａを有し、他方に頂点１９ｂを有する錘体状である。従って、弾性部材１９は、上述した電極部２０が弾性部材１９に接触した状態で接触面２１ａ及び接触面２２ａ同士が対向する方向である第１方向Ｄ１に対して直交する平面（Ｘ－Ｙ平面）で切断した弾性部材１９の断面積Ｓ１は、一方の接触面２１ａ側から他方の接触面２２ａ側へ向かうに従って変化するような部材である。 The elastic member 19 in the detection device 300 has a weight shape having a bottom surface 19a on one side and a vertex 19b on the other side. Therefore, the elastic member 19 has a plane (XY plane) orthogonal to the first direction D1, which is the direction in which the contact surface 21a and the contact surface 22a face each other in a state where the electrode portion 20 is in contact with the elastic member 19. The cross-sectional area S1 of the elastic member 19 cut in step) is a member that changes from the one contact surface 21a side toward the other contact surface 22a side.
　検出装置３００では、弾性部材１９は四角錘状であると共に、この四角錘状の頂点１９ｂが接触面２１ａに接し、弾性部材１９の平坦な面である底面１９ａが接触面２２ａに接しており、接触面２１ａ及び接触面２２ａによって弾性部材１９が挟持されている。即ち、電極部２０の一方は弾性部材１９の底面１９ａに対向すると共に、他方は頂点１９ｂに対向する。 In the detection device 300, the elastic member 19 has a quadrangular pyramid shape, the apex 19b of the quadrangular pyramid contacts the contact surface 21a, and the bottom surface 19a that is a flat surface of the elastic member 19 contacts the contact surface 22a. The elastic member 19 is held between the contact surface 21a and the contact surface 22a. That is, one of the electrode portions 20 faces the bottom surface 19a of the elastic member 19, and the other faces the vertex 19b.
　検出装置１００の場合と同様に、検出装置３００を押圧操作する、即ち弾性部材１９を押圧することによって、弾性部材１９の上側と第１電極部２１との間の接触領域２５の接触面積Ｓ２が大きくなる。また、弾性部材１９を押圧することによって、圧縮された弾性部材１９を上方向から見た場合の接触領域２５の形状が四方向に拡がり、一対の電極部２０間の距離がより近くなり易い。そのため、弾性部材１９の一対の電極部２０間における抵抗値Ｒ１が小さくなり、その結果、弾性部材１９を押圧する前と後とで、抵抗値Ｒ１の変化率が従来に比べて大きくなる。 As in the case of the detection device 100, by pressing the detection device 300, that is, by pressing the elastic member 19, the contact area S <b> 2 of the contact region 25 between the upper side of the elastic member 19 and the first electrode portion 21 is increased. growing. Moreover, by pressing the elastic member 19, the shape of the contact region 25 when the compressed elastic member 19 is viewed from above is expanded in four directions, and the distance between the pair of electrode portions 20 is likely to be closer. Therefore, the resistance value R1 between the pair of electrode portions 20 of the elastic member 19 is reduced, and as a result, the rate of change of the resistance value R1 is increased before and after the elastic member 19 is pressed compared to the conventional case.
　検出装置３００は、検出装置１００の場合と異なり、弾性部材１９の下側と第２電極部２２との間の接触面積は、ほとんど変化しない。従って、接触面積Ｓ２の変化は、弾性部材１９の上側と第１電極部２１との間の接触領域２５による接触面積Ｓ２の変化のみとなる。しかし、弾性部材１９の一方の面が平坦な面となっているので、弾性部材１９を装置内に配置し易くなる。 Unlike the case of the detection device 100, the contact area between the lower side of the elastic member 19 and the second electrode portion 22 of the detection device 300 hardly changes. Therefore, the change in the contact area S <b> 2 is only the change in the contact area S <b> 2 due to the contact region 25 between the upper side of the elastic member 19 and the first electrode portion 21. However, since one surface of the elastic member 19 is a flat surface, the elastic member 19 can be easily arranged in the apparatus.
　尚、検出装置３００における弾性部材１９は、その形状が四角錘状の錐体状となっているが、三角錘状等の他の多角錘状、又は円錐状であっても良い。 The elastic member 19 in the detection device 300 is a pyramid having a quadrangular pyramid shape, but may be another polygonal pyramid shape such as a triangular pyramid shape or a conical shape.
　以下、本第３実施形態としたことによる効果について説明する。 Hereinafter, the effect obtained by adopting the third embodiment will be described.
　検出装置３００は、弾性部材１９が錘体状であるため、電極部２０と弾性部材１９の頂点１９ｂとの接触領域２５における接触面積Ｓ２を、より効率良く拡大させることができる。また、弾性部材１９の底面１９ａ側が平坦な面となっているので、弾性部材１９を装置内に配置し易くなる。 In the detection device 300, since the elastic member 19 has a weight shape, the contact area S2 in the contact region 25 between the electrode portion 20 and the apex 19b of the elastic member 19 can be expanded more efficiently. Further, since the bottom surface 19a side of the elastic member 19 is a flat surface, the elastic member 19 can be easily placed in the apparatus.
　以上説明したように、検出装置は、一方の接触面側から他方の接触面側へ向かうに従って断面積が変化するような形状を弾性部材が有しているため、弾性部材が押圧された際に弾性部材と電極部との接触領域における接触面積が拡がる。そのため、弾性部材の一対の電極部間における抵抗値が小さくなり、そのことによって抵抗値の変化率を大きくすることができる。その結果、スイッチング動作の有無判定のための閾値に十分な余裕を持たせることができる。 As described above, since the elastic device has a shape in which the cross-sectional area changes from one contact surface side to the other contact surface side, when the elastic member is pressed, The contact area in the contact region between the elastic member and the electrode portion is increased. For this reason, the resistance value between the pair of electrode portions of the elastic member is reduced, whereby the rate of change of the resistance value can be increased. As a result, a sufficient margin can be provided for the threshold value for determining the presence or absence of the switching operation.
　本発明は上記の実施形態に限定されるものではなく、要旨を逸脱しない範囲で種々変更して実施することが可能である。また、第２実施形態及び第３実施形態に対しても、第１実施形態の第３変形例に示したように、弾性部材に空隙部を設ける構造を適用しても良い。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. In addition, as shown in the third modification of the first embodiment, a structure in which a gap is provided in the elastic member may be applied to the second embodiment and the third embodiment.
　１０　　　弾性部材（柱状）
　１１　　　弾性部材（円）
　１２　　　弾性部材（半円）
　１３　　　弾性部材（多角形）
　１４　　　弾性部材（気泡）
　１４ａ　　空隙部
　１５　　　弾性部材（略球面状）
　１６　　　弾性部材（球状）
　１７　　　弾性部材（半球状）
　１７ａ　　平面部
　１９　　　弾性部材（錐体状）
　１９ａ　　底面
　１９ｂ　　頂点
　２０　　　電極部
　２１　　　第１電極部
　２１ａ　　接触面
　２２　　　第２電極部
　２２ａ　　接触面
　２５　　　接触領域
　３０　　　回路
　３１　　　固定抵抗
　１００　　検出装置
　１１０　　検出装置
　１２０　　検出装置
　１３０　　検出装置
　２００　　検出装置
　２１０　　検出装置
　３００　　検出装置
　Ｄ１　　　第１方向
　Ｒ０　　　抵抗値
　Ｒ１　　　抵抗値
　Ｓ１　　　断面積
　Ｓ２　　　接触面積
　Ｖｃｃ　　電源電圧
　Ｖｏｕｔ　出力電圧
  10 Elastic member (columnar)
11 Elastic member (circle)
12 Elastic member (semicircle)
13 Elastic member (polygon)
14 Elastic member (bubble)
14a Cavity 15 Elastic member (substantially spherical)
16 Elastic member (spherical)
17 Elastic member (hemispherical)
17a Plane portion 19 Elastic member (conical shape)
19a bottom surface 19b vertex 20 electrode portion 21 first electrode portion 21a contact surface 22 second electrode portion 22a contact surface 25 contact region 30 circuit 31 fixed resistance 100 detection device 110 detection device 120 detection device 130 detection device 200 detection device 210 detection device 300 Detector D1 First direction R0 Resistance value R1 Resistance value S1 Cross section S2 Contact area Vcc Power supply voltage Vout Output voltage

Claims (9)

  1. 　感圧導電性を有する弾性部材と、
    　導電性を有し、前記弾性部材と接触する接触面で前記弾性部材を挟持する一対の電極部と、を備え、
    　一対の前記電極部は、前記弾性部材に接触した状態で前記接触面同士が対向する第１方向へ相対的に移動可能であり、
    　前記第１方向に対して直交する平面で切断した前記弾性部材の断面積は、一方の前記接触面側から他方の前記接触面側へ向かうに従って変化する、
    ことを特徴とする検出装置。     An elastic member having pressure-sensitive conductivity;
    A pair of electrode portions having conductivity and sandwiching the elastic member at a contact surface in contact with the elastic member;
    The pair of electrode portions are relatively movable in a first direction in which the contact surfaces face each other in a state of being in contact with the elastic member,
    The cross-sectional area of the elastic member cut along a plane orthogonal to the first direction changes from one contact surface side toward the other contact surface side.
    A detection device characterized by that.
  2. 　前記弾性部材は柱状であり、
    　一対の前記電極部は前記弾性部材の柱面側に配置されている、
    ことを特徴とする請求項１に記載の検出装置。     The elastic member is columnar,
    The pair of electrode portions are disposed on the column surface side of the elastic member.
    The detection apparatus according to claim 1.
  3. 　前記第１方向に平行で且つ前記柱状が延設された方向に対して垂直な平面で切断した時の前記弾性部材の断面形状が円又は楕円である、
    ことを特徴とする請求項２に記載の検出装置。     The cross-sectional shape of the elastic member when cut along a plane parallel to the first direction and perpendicular to the direction in which the columnar shape is extended is a circle or an ellipse.
    The detection apparatus according to claim 2.
  4. 　前記第１方向に平行で且つ前記柱状が延設された方向に対して垂直な平面で切断した時の前記弾性部材の断面形状が半円又は半楕円である、
    ことを特徴とする請求項２に記載の検出装置。     The cross-sectional shape of the elastic member when cut along a plane parallel to the first direction and perpendicular to the direction in which the columnar shape is extended is a semicircle or a semi-ellipse,
    The detection apparatus according to claim 2.
  5. 　前記第１方向に平行で且つ前記柱状が延設された方向に対して垂直な平面で切断した時の前記弾性部材の断面形状が多角形である、
    ことを特徴とする請求項２に記載の検出装置。     The cross-sectional shape of the elastic member when cut along a plane parallel to the first direction and perpendicular to the direction in which the columnar shape extends is a polygon.
    The detection apparatus according to claim 2.
  6. 　前記弾性部材の前記電極部に対向する箇所の少なくとも一方は略球面状である、
    ことを特徴とする請求項１に記載の検出装置。     At least one of the portions of the elastic member facing the electrode part is substantially spherical.
    The detection apparatus according to claim 1.
  7. 　前記弾性部材は球状である、
    ことを特徴とする請求項６に記載の検出装置。     The elastic member is spherical.
    The detection apparatus according to claim 6.
  8. 　前記弾性部材は平面部を有する半球状であり、
    　前記電極部の一方は前記平面部に対向している、
    ことを特徴とする請求項６に記載の検出装置。     The elastic member is a hemisphere having a flat surface,
    One of the electrode parts faces the flat part,
    The detection apparatus according to claim 6.
  9. 　前記弾性部材は底面及び頂点を有する錘体状であり、
    　前記電極部の一方は前記底面に対向すると共に、他方は前記頂点に対向する、
    ことを特徴とする請求項１に記載の検出装置。
          The elastic member has a weight shape having a bottom surface and a vertex,
    One of the electrode portions is opposed to the bottom surface, and the other is opposed to the apex.
    The detection apparatus according to claim 1.
PCT/JP2017/022407 2016-07-06 2017-06-16 Detection apparatus WO2018008367A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57132302A (en) * 1981-02-09 1982-08-16 Shinetsu Polymer Co Pressure sensitive resistance element
JPS61129140U (en) * 1985-01-23 1986-08-13
WO1990013800A1 (en) * 1989-05-03 1990-11-15 Ab Elektronik Gmbh Electronic pressure sensor
JPH07505757A (en) * 1992-04-16 1995-06-22 カールストローム、ペル・オロフ overload protection system
JP2015197299A (en) * 2014-03-31 2015-11-09 パナソニックＩｐマネジメント株式会社 Pressure sensitive element, manufacturing method thereof, touch panel including pressure sensitive element and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57132302A (en) * 1981-02-09 1982-08-16 Shinetsu Polymer Co Pressure sensitive resistance element
JPS61129140U (en) * 1985-01-23 1986-08-13
WO1990013800A1 (en) * 1989-05-03 1990-11-15 Ab Elektronik Gmbh Electronic pressure sensor
JPH07505757A (en) * 1992-04-16 1995-06-22 カールストローム、ペル・オロフ overload protection system
JP2015197299A (en) * 2014-03-31 2015-11-09 パナソニックＩｐマネジメント株式会社 Pressure sensitive element, manufacturing method thereof, touch panel including pressure sensitive element and manufacturing method thereof

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