WO2018101113A1

WO2018101113A1 - Dispenser

Info

Publication number: WO2018101113A1
Application number: PCT/JP2017/041741
Authority: WO
Inventors: 達也平林; 恵一郎西; 小波黄; 龍謝
Original assignee: サラヤ株式会社
Priority date: 2016-12-01
Filing date: 2017-11-21
Publication date: 2018-06-07
Also published as: JP6981996B2; JPWO2018101113A1

Abstract

To facilitate replacement of a tube in a dispenser provided with a tube pump mechanism. This dispenser is provided with a tube pump mechanism that draws up and discharges a prescribed fluid from within a container accommodating the fluid, and a main body in which the tube pump mechanism is disposed. The tube pump mechanism has a soft tube in which the fluid flows, a roller guide and roller that cooperate with each other to push the soft tube, and a lid member that is attached to the main body so as to be capable of opening and closing. The lid member is configured so as to push the roller guide against the roller when closed, and to cease pushing the roller guide against the roller when opened.

Description

Dispenser

The present invention relates to a dispenser provided with a tube pump mechanism.

Generally, a facility such as a hospital is equipped with a bottle provided with a movable cap, and a manual pump dispenser is provided in which a predetermined amount of disinfectant is discharged by manually pressing the movable cap.

For example, Patent Document 1 discloses a foot-type dispenser in which a pedal is provided in the dispenser, and the movable cap is pressed by stepping on the pedal to discharge the disinfectant. The foot-type dispenser is disposed, for example, at the entrance of an operating room of a hospital, and doctors can disinfect hands and arms without touching the dispenser.

Japanese Utility Model Publication No. 7-20973

Physicians performing surgery require a large amount of disinfectant. However, in a foot-operated dispenser, the amount of disinfectant discharged by pressing the pedal once is limited, so doctors need to step on the pedal many times to obtain the required amount of disinfectant .

To solve this problem, it is conceivable to discharge the disinfectant continuously using a so-called tube pump mechanism in which the tube is squeezed with a roller to suck up and discharge the fluid contained in the container.

Here, in a dispenser that is placed in a place where strict hygiene management is required, such as the entrance of an operating room, when a disinfectant is filled in a container, the user touches the tube and bacteria are mixed in the tube. From the standpoint of preventing this, it is common to replace the tube as the disinfectant is filled. Therefore, a dispenser equipped with a tube pump mechanism is required to have a mechanism that allows the user to easily replace the tube.

The present invention has been made in view of the above-described problems, and an object of the present invention is to facilitate tube replacement in a dispenser having a tube pump mechanism.

In order to solve the above-described problems, the present invention provides:
A tube pump mechanism that sucks up and discharges the fluid from a container in which a predetermined fluid is stored;
A main body on which the tube pump mechanism is disposed;
The tube pump mechanism is
A soft tube through which the fluid flows;
A roller guide and a roller for cooperating with each other to press the soft tube;
A lid member attached to the main body so as to be opened and closed;
The lid member is configured to be closed to press the roller guide against the roller and to be opened to release the roller guide from being pressed against the roller.
A dispenser is provided.

According to the present invention, when the lid member is opened, the pressing of the roller guide to the roller is released, so that the user can easily replace the soft tube.

It is a perspective view which shows the dispenser which concerns on embodiment of this invention. It is a perspective view which shows the state which removed the front housing from the dispenser which concerns on embodiment of this invention. It is a perspective view which shows the main body of a pump unit. It is a perspective view which shows the state which removed the upper stage pump housing from the main body of the pump unit. It is a perspective view which shows the state which removed the gear mechanism from FIG. It is a perspective view which shows a lower stage pump housing. It is a perspective view which shows the pump unit of the state which closed the cover member. It is a top view which shows the pump unit of the state which closed the cover member. It is a perspective view which shows the pump unit of the state which opened the cover member. It is a perspective view which shows the state which removed the tube cover from FIG. It is a development perspective view of a pump unit. It is a figure which shows the drive part of a tube pump, and its peripheral part. It is a figure which shows the structure of the periphery of the rotating shaft part of a tube pump. It is a disassembled perspective view which shows the structure of a nozzle. It is a block diagram which shows the structure of a control apparatus. It is a perspective view which shows the pump unit of the state which opened the cover member and removed the soft tube.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In the following description, terms indicating a specific direction (front, back, top, bottom, etc.) are used as necessary, but these terms are used to facilitate understanding of the present invention. It should not be understood that these terms limit the scope of the invention.

1. Appearance As shown in FIG. 1, a dispenser 100 according to an embodiment of the present invention is a device that supplies a disinfectant for disinfecting hands and fingers. The housing 2 constituting the appearance of the dispenser 100 has a generally box shape that is vertically long. In the embodiment, the housing 2 has two housings (a rear housing 3 and a front housing 4) that are divided along an oblique surface that connects the front end of the bottom wall to the rear end of the ceiling wall.

The rear housing 3 and the front housing 4 are connected by a hinge. In the embodiment, the hinge 5 is configured by the hinge portion 3 a provided at the front edge of the rear housing 3 and the hinge portion 4 a provided at the lower end edge of the front housing 4. The front housing 4 rotates forward about the hinge 5 to expose the interior of the housing 2 (see FIG. 2), and closed to rotate backward about the hinge 5 to hide the interior of the housing 2 (See FIG. 1). In the embodiment, the rear housing 3 is closed by engaging the latch portion 3b provided at the upper edge of the rear housing 3 and the latch portion (not shown) provided at the rear edge of the front housing 4 with each other. Retained. The front housing 4 may be provided so as to be detachable from the rear housing 3.

The front housing 4 is provided with a protrusion 4b. When the front housing 4 is in the closed position, a nozzle 110 described later is exposed to the outside of the housing 2 from the opening 4c provided in the protrusion 4b.

As shown in FIG. 2, in an internal space surrounded by the housing 2, a bottle 7 for storing a disinfecting liquid as an example of a fluid, and an electric pump for sucking and discharging the disinfecting liquid stored in the bottle 7. A unit (hereinafter simply referred to as a pump unit) 1 and a power supply unit 8 for supplying power to the pump unit 1 are accommodated. The internal space surrounded by the housing 2 accommodates an AC-DC converter that converts commercial AC power into DC power and outputs in addition to the power supply unit 8 or instead of the power supply unit 8. Also good.

2. Bottle 7
The bottle 7 includes a container body 7a and a lid 7b made of, for example, plastic. A through hole (not shown) is provided in the center of the lid 7b. Through this through hole, the bottle tube 7c is inserted into the container body 7a. It is preferable that the lower end of the bottle tube 7c substantially reaches the bottom of the container body 7a so that the disinfecting liquid contained in the container body 7a can be consumed completely (or almost completely). The upper end of the bottle tube 7c is connected to the soft tube 30 described later.

3. Power supply unit 8
The power supply unit 8 is a battery pack that supplies power to a motor 81 described later. As illustrated, in the embodiment, the power supply unit 8 is disposed adjacent to the bottle 7 in the lower region of the internal space of the housing 2.

4). Pump unit 1
The pump unit 1 includes a main body 10 attached to the back housing 3 and a tube pump mechanism 20 disposed in the main body 10. The pump unit 1 uses the tube pump mechanism 20 to suck up the disinfectant solution from the bottle 7 and discharge it to the outside of the housing 2.

5). Body 10
As shown in FIGS. 3 to 6, in the embodiment, the main body 10 has three stacked pump housings (an upper pump housing 101, a middle pump housing 102, and a lower pump housing 103).

The main body 10 has an upper surface 10a and a bottom surface 10b. The bottom surface 10b is a horizontal plane, and the top surface 10a is an inclined surface inclined from the horizontal direction to the vertical downward direction from the rear part to the front part. The inclination angle of the upper surface 10a with respect to the bottom surface 10b, which is a horizontal plane, is, for example, 30 degrees or more and 60 degrees or less so that the disinfecting liquid can be easily discharged from the nozzle 110. Hereinafter, a direction (vertical direction) perpendicular to the bottom surface 10b that is a horizontal plane is referred to as a Z direction, and directions extending in the left-right direction and the front-rear direction along the bottom surface 10b are respectively referred to as an X direction and a Y direction. These directions are referred to as the Z ′ direction, and the directions extending in the left-right direction and the front-back direction along the upper surface 10a are referred to as the X ′ direction and the Y ′ direction, respectively (see FIG. 2). As shown in the figure, the X direction and the X ′ direction coincide with each other.

(Upper pump housing 101)
The upper surface of the upper pump housing 101 coincides with the upper surface 10 a of the main body 10. As shown in FIG. 3, a rotor chamber 11 having a deep recess is provided in the center of the upper surface 10a. A through hole 12 extending in the vertical direction (Z ′ direction) is provided at the center of the bottom surface 11 a of the rotor chamber 11. From the through hole 12, a rotating shaft portion 104 extending in the vertical direction (Z ′ direction) protrudes. The rotor chamber 11 is formed in a circular shape centering on the central axis 105 of the rotating shaft portion 104 when viewed from above (Z ′ direction).

In the upper surface 10 a of the upper pump housing 101 and in the region surrounding the substantially rear half of the rotor chamber 11, a guide surface 11 b that is a shallow semi-circular arc shaped shallow flat recess is provided. Between the rotor chamber 11 and the guide surface 11b, an annular regulating wall 11c extending upward (Z ′ direction) from the guide surface 11b is provided along the periphery of the rotor chamber 11. A step portion 11d is defined between the upper surface 10a and the guide surface 11b. An engagement groove 11e that engages with a latch portion 63 of a lid member 60 described later is provided in front of the rotor chamber 11.

On the upper surface 10a of the upper pump housing 101 and in front of the guide surface 11b, adjacent to both front end portions of the guide surface 11b, a spring accommodating chamber 13 which is a deep recess having a substantially rectangular shape when viewed from above (Z ′ direction). Are provided so as to extend in the front-rear direction (Y ′ direction). In the spring accommodating chamber 13, a cylindrical main body side protruding portion 14 extends rearward (Y ′ direction). A slider pressing portion 15 is provided behind the spring accommodating chamber 13 (Y ′ direction). The slider pressing portion 15 protrudes from the upper surface 10a of the main body 10 toward the guide surface 11b.

In the illustrated preferred embodiment, a tube holder 16 for holding a tube 30 described later is provided on the upper surface 10a of the upper pump housing 101 on the left and right front sides of the rotor chamber 11. Further, a hinge portion 10d for a lid member 60 described later is provided on the upper end of the rear wall of the upper pump housing 101.

(Middle stage pump housing 102)
As shown in FIGS. 4 and 5, the middle pump housing 102 is partitioned in the vertical direction (Z ′ direction) by a partition wall 102a. On the upper surface of the partition wall 102a, an upper annular wall 102b extending upward along a circle centering on the central axis 105 is provided. As shown in the drawing, the upper annular wall 102 b does not have to be present along the entire length along the circle centered on the central axis 105. The inner space of the upper annular wall 102b is used as a gear accommodating chamber for accommodating a driven gear 82 described later.

As shown in FIG. 5, a circular bearing hole 102c extending in the vertical direction (Z ′ direction) at the center of the upper annular wall 102b is provided at the center of the upper surface of the partition wall 102a. The bearing hole 102c has a diameter slightly larger than the diameter of the rotating shaft portion 104, and receives and supports the lower end of the rotating shaft portion 104 (see FIG. 13). A bearing that receives the rotation of the rotating shaft portion 104 may be provided in the bearing hole 102c. Further, the center of the bearing hole 102c coincides with (or substantially coincides with) the center of the rotation shaft portion 104. In addition, a through hole 102d penetrating the partition wall 102a is provided in the vicinity of a circle extending along the inner surface of the upper annular wall 102b in a region where a part of the upper annular wall 102b is removed on the upper surface of the partition wall 102a. ing.

Although not shown, a lower annular wall extending downward (Z ′ direction) along a circle centering on the through hole 102d is provided on the bottom surface of the partition wall 102a. The inner space of the lower annular wall is used as a motor accommodating chamber as will be described later.

Although not shown, a circuit board (in the embodiment, a printed board) 83 (see FIG. 12) on which an electric circuit or the like for electrically connecting the power supply unit 8 and the motor 81 is mounted on the bottom surface of the partition wall 102a. ) Is fixed.

(Lower pump housing 103)
As shown in FIG. 6, the bottom surface of the lower pump housing 103 coincides with the bottom surface of the main body 10. A motor 81, a printed circuit board 83, and the like are accommodated in the internal space of the lower pump housing 103.

In the illustrated preferred embodiment, the upper, middle, and

lower pump housings

101, 102, 103 have a front surface of the

pump housings

101, 102, 103 in a combined state, and a projecting portion 17 having a sensor housing portion 17a and a nozzle holding groove 17b, A tube guide groove 18 extending in the direction (Z ′ direction) and a mode changeover switch 19 for switching between the continuous discharge mode and the single discharge mode of the dispenser 100 are provided. The mode switch 19 is connected to a control device 120 described later.

6). Tube pump mechanism 20
As shown in FIGS. 7 to 13, the tube pump mechanism 20 includes a soft tube 30 through which a disinfecting liquid flows, a roller guide 40 and

rollers

50 a, 50 b, 50 c for pressing and squeezing the tube 30 in cooperation with each other. A lid member 60 that opens and closes to cover the roller guide 40 and the rollers 50a to 50c, a rotor 70 on which the rollers 50a to 50c are placed, a drive unit 80 for rotating the rotor 70, and the like. .

(Soft tube 30)
The soft tube (or flexible tube) 30 is made of a soft material that easily elastically deforms. The soft material may be vinyl chloride, fluororesin, silicone, or the like. As described above, one end of the soft tube 30 is connected to the upper end of the bottle tube 7 c attached to the bottle 7. A nozzle 110 described later is attached to the other end of the soft tube 30.

The soft tube 30 is disposed on the annular restriction wall 11c provided on the upper surface 10a of the main body 10 along the annular restriction wall 11c. The soft tube 30 is held by the left and right tube holders 16. Hereinafter, a part of the soft tube 30 that is between the left and

right tube holders

16 and 16 and is held by the tube holder 16 along the annular restriction wall 11c and arranged in a circle when viewed from above (Z ′ direction) is annular. This is called the department.

(Roller guide 40)
As shown in FIG. 11, in the embodiment, the roller guide 40 includes an arch portion 40a having an inner peripheral surface and an outer peripheral surface having an arc-shaped cross section when viewed from above (Z ′ direction), and an arch portion 40a from both ends thereof And a slider portion 40b extending in a direction away from the central portion. The roller guide 40 is disposed on the guide surface 11b.

Here, in the present specification, the section having an arc shape when viewed from above (Z ′ direction) means that a section cut by a plane perpendicular to the up and down direction (Z ′ direction) is arc. However, the circular arc does not have to be a perfect circular arc, and may be a curve whose curvature has changed to such an extent that the effect of the present invention is achieved.

When a forward force (Y ′ direction) is applied to the substantially central portion of the arch portion 40a with the roller guide 40 positioned on the guide surface 11b, the roller guide 40 follows the outer peripheral surface of the annular regulating wall 11c. Then, it moves forward on the guide surface 11b until it comes into contact with the annular regulating wall 11c.

In the embodiment, a vertical wall portion 40c extending downward (Z ′ direction) is provided at the tip of the left and right slider portions 40b. The vertical wall portion 40 c is accommodated in the spring accommodating chamber 13. The vertical wall portion 40c is provided with a cylindrical slider-side protruding portion 40d protruding forward (Y ′ direction). The slider-side protruding portion 40 c and the main body-side protruding portion 14 provided in the upper pump housing 101 are inserted through a hollow portion of a coil spring 41 disposed in the spring accommodating chamber 13.

The coil spring 41 is slightly compressed when the roller guide 40 is in a retracted position (a position in a state where a lid member 60 described later is opened), and the roller guide 40 is in an advanced position (the lid member 60 is closed). The compression distance increases as it approaches the position in the state. Further, when the roller guide 40 is in the retracted position, the roller guide 40 abuts on a step portion 11d defined between the upper surface 10a and the guide surface 11b. Therefore, when the roller guide 40 is in the retracted position, the roller guide 40 receives a biasing force from the coil spring 41 in the front (Y ′ direction) and receives a reaction force from the step portion 11d in the rear and is held at a predetermined position.

In a state where the roller guide 40 is in contact with the annular regulating wall 11c and is regulated (advance position), between the roller guide 40 and a circle (virtual circle) circumscribing the plurality of rollers 50a to 50c located inside the roller guide 40 A gap having a predetermined size is formed. The size of the gap may be set to a value equal to or less than twice the wall thickness of the soft tube 30 (the tube thickness when the lumen is closed by being crushed by the roller guide 40 and the rollers 50a to 50c). preferable. The curvature (or diameter) of the annular regulating wall 11c is set so that the gap is formed.

(

Rollers

50a, 50b, 50c)
The rollers 50a to 50c may be made of resin. The outer diameters of the rollers 50 a to 50 c are set so that the diameter of a circle (imaginary circle) circumscribing the three rollers is slightly smaller than the inner diameter of the rotor chamber 11. The rollers 50a to 50c are arranged around the rotation shaft portion 104 at an equal angle (120 ° in the embodiment because three rollers are used). Although three rollers are used in the embodiment, the present invention is not limited to this, and one, two, or four or more rollers may be used.

The rollers 50a to 50c have a hollow cylindrical shape. Rollers 50a to 50c are rotatably supported on a rotor 70 described later, and

cylinders

72a, 72b, and 72c of the rotor 70 are inserted into hollow portions of the

rollers

50a, 50b, and 50c, respectively.

(Cover member 60)
The lid member 60 is configured to be movable between an open position where the annular portion of the soft tube 30 is exposed and a closed position covering the annular portion by a hinge. The hinge is configured by a hinge portion 10 d provided at the upper end of the rear wall of the upper pump housing 101 and a hinge portion 60 a provided at a corresponding position in the lid member 60.

The lid member 60 functions as a pressure mechanism that is closed and presses the roller guide 40 against at least one of the rollers 50a to 50c. The lid member 60 is configured to be opened to release the pressing of the roller guide 40 against the roller. This will be specifically described below.

As shown in FIGS. 9 and 10, the bottom surface of the lid member 60 is along an arc that coincides with or substantially coincides with the rear outer peripheral surface of the roller guide 40 in the forward movement position with the lid member 60 in the closed position. An extending peripheral wall 61 is formed. Therefore, when the lid member 60 is closed from the open position shown in FIG. 9 toward the closed position shown in FIG. 7, a part of the inner peripheral surface 62 of the peripheral wall 61 contacts the upper portion of the outer peripheral surface of the roller guide 40. When the lid member 60 is further closed from this state, the contact between the lid member 60 and the roller guide 40 gradually lowers (Z ′ direction) in accordance with the degree of opening / closing of the lid member 60, that is, the movement amount (or rotation amount). ), The roller guide 40 moves forward.

Finally, with the lid member 60 closed, the roller guide 40 has advanced to a position regulated by the annular regulating wall 11c, and the entire peripheral wall 61 of the lid member 60 abuts against the arch portion 40a. Push the whole thing.

In the embodiment, a latch portion 63 is provided at the front portion of the lid member 60 in order to hold the lid member 60 in the closed position. By pressing the latch portion 63 rearward (Y ′ direction) and elastically deforming, the snap engagement portions 63a provided on both the left and right sides of the latch portion 63 snap into the engagement groove 11e. The latch part 63 has a grip part 63b protruding forward. One or more ribs 60 c are provided on the upper surface 60 b of the lid member 60. The lid member 60 is provided with a tube pressing portion 64 for pressing the soft tube 30 at the position of the tube holder 16.

(Rotor 70)
In the embodiment, the rotor 70 has a substantially disk shape when viewed from above (Z ′ direction). The rotor 70 is accommodated in the rotor chamber 11 provided in the upper pump housing 101. A bearing hole 71 that is a through hole extending in the vertical direction (Z ′ direction) is provided in the center of the rotor 70 (see FIG. 11). The rotation shaft portion 104 is inserted through the bearing hole 71.

In the embodiment, three

cylinders

72a, 72b, and 72c that extend in parallel (in the Z ′ direction) to the rotation shaft portion 104 at an interval of 120 degrees from each other are integrally formed on the circumference centered on the central axis 105. Is provided. As described above, the

cylinders

72a, 72b, and 72c are inserted through the hollow portions of the

rollers

50a, 50b, and 50c. The outer diameters of the cylinders 72a to 72c are slightly smaller than the inner diameters of the hollow portions of the rollers 50a to 50c, so that the rollers 50a to 50c can rotate around the cylinders 72a to 72c. The

cylinders

72a, 72b, 72c are provided with

bolts

73a, 73b, 73c for preventing the

rollers

50a, 50b, 50c from coming off. The

bolts

73a, 73b, 73c that function as

In the embodiment, a circular tube cover 74 is provided on the rotor 70 as viewed from above (Z ′ direction). In the preferred embodiment shown, the tube cover 74 is secured to the rotor 70 by bolts 73a-73c. A bearing hole 74 a that receives the upper end of the rotating shaft portion 104 is formed at the center of the lower surface of the tube cover 74. The bearing hole 74 a may be provided with a bearing that receives the rotation of the rotary shaft portion 104. The diameter of the bearing hole 74 a is slightly larger than the diameter of the rotating shaft portion 104. Further, the center of the bearing hole 74a coincides with (or substantially coincides with) the center of the rotation shaft portion 104.

(Driver 80)
As shown in FIG. 12, the drive unit 80 includes an electric motor (hereinafter simply referred to as a motor) 81 housed in the inner space of the lower annular wall of the middle pump housing 102 as a drive source. The motor 81 is connected to a control device 120 described later. The motor 81 may be a stepping motor or a servo motor.

The output shaft of the motor 81 is inserted into the through hole 102d of the partition wall 102a of the middle pump housing 102 and protrudes above the partition wall 102a, and a small-diameter drive gear 81a is fixed to the protruding portion (see FIG. 4). On the other hand, a large-diameter driven gear 82 is accommodated in the drive gear 81a in a gear accommodation chamber (inner space of the upper annular wall 102b) provided on the upper surface of the partition wall 102a. The drive gear 81a and the driven gear 82 are engaged with each other in a state assembled to the middle pump housing 102. A through hole is formed in the center of the driven gear 82, and the rotating shaft portion 104 is inserted into the through hole, and the rotating shaft portion 104 is fixed to the driven gear 82. Thereby, the rotation of the output shaft of the motor 81 is transmitted from the drive gear 81a to the rotary shaft portion 104 via the driven gear 82.

A convex portion 82 a is provided on the bottom surface of the driven gear 82. A printed circuit board 83 is disposed below the driven gear 82 (Z ′ direction), and a photo interrupter 84 is mounted on the printed circuit board 83. The photo interrupter 84 is connected to the control device 120 described later. The driven gear 82 may be provided with a plurality of convex portions 82a.

The photo interrupter 84 has a light emitting element 84a and a light receiving element 84b arranged to face each other. A conductive pattern is formed on the printed board 83, and a current from a power source (not shown) is supplied to the photo interrupter 84, whereby light is emitted from the light emitting element 84a toward the light receiving element 84b. When the driven gear 82 rotates, the convex portion 82a passes between the light emitting element 84a and the light receiving element 84b, and light is blocked by the convex portion 82a. In this manner, the rotation of the driven gear 82, that is, the rotation of the rotor 70 or the rotation of the rollers 50a to 50c (revolution around the central axis 105) is detected.

7). Infrared sensor 90
The infrared sensor 90 is configured to detect the presence of an object (or a distance to the object) by receiving infrared rays radiated according to the temperature of the object. The infrared sensor 90 is connected to a control device 120 described later. The infrared sensor 90 has a sensor cover 91. The sensor cover 91 may be a smoke cover for adjusting the sensitivity of the sensor. For example, a thermal infrared detecting element is disposed in the sensor housing portion 17a (see FIG. 3) defined by the sensor cover 91. The sensor cover 91 is provided with a sensor-side nozzle holding groove 91a communicating with the cover-side nozzle holding groove 17b.

In addition to the infrared sensor, for example, an ultrasonic sensor that detects the presence of the object (or the distance to the object) by emitting an ultrasonic wave toward the object and receiving a reflected wave from the object, etc. Other human sensors may be used.

8). Nozzle 110
As illustrated in FIG. 14, the nozzle 110 includes a nozzle head 111 and a hollow tube connection portion 112 that is detachably attached to the nozzle head 111. The nozzle head 111 is provided with an ejection hole 111a. The nozzle 110 discharges the disinfectant liquid, for example, in a mist form through the discharge hole 111a. The nozzle head 111 is provided with a flange portion 111b. The flange portion 111 b engages with a nozzle holding groove 91 a provided in the sensor cover 91 of the infrared sensor 90. The soft tube 30 is press-fitted into the hollow portion of the tube connection portion 112.

A check valve 113 is provided in the nozzle 110. In the illustrated preferred embodiment, a duckbill type check valve is used as the check valve 113. The duckbill check valve 113 is made of an elastic material such as an elastomer, and has a duck lip shape that is pointed to the tip side. The duckbill check valve 113 is open on the rear end side, and the tip of the soft tube 30 is fitted into this opening. On the front end side of the duckbill check valve 113, a slit port 113a formed by a pair of lip portions is provided so as to be openable and closable. When the inside of the soft tube 30 becomes negative pressure, the pair of lip portions are in close contact with each other, and the slit port 113a is closed. When the negative pressure in the soft tube 30 is released, the slit port 113a is opened.

As the check valve 113, in addition to the duckbill type check valve, for example, a disk type check valve using a spring or a ball type check valve may be used.

9. Control device 120
The control device 120 includes a memory, a processor that executes a program stored in the memory, and the like. As shown in FIG. 15, the control device 120 receives input signals from the mode switch 19, the photo interrupter 84 as a rotation speed sensor, and the infrared sensor 90 as a human sensor. The control device 120 transmits a control signal to the motor 81 and the LED (light emitting diode) 130 based on input signals from these switches and sensors.

The processor of the control device 120 is configured to integrate the rotational speed of the rotary shaft portion 104 that matches the rotational speed of the driven gear 82 based on the input signal from the photo interrupter 84. The total number of rotations of the rotating shaft unit 104 to be integrated is stored in the memory. The arrows shown in FIG. 15 indicate the signal transmission source and the transmission destination. The signal transmission source and the transmission destination are connected by a signal cable (not shown).

10. Operation of the pump unit 1 When the user holds his / her hand in front of the opening 4c (see FIG. 1) of the front housing 4, the control device 120 determines that the user is sensed based on a signal from the infrared sensor 90. To do. In accordance with this determination, control device 120 transmits a pulse signal to motor 81 to rotate its output shaft. The rotation of the output shaft of the motor 81 is transmitted by being decelerated from the drive gear 81a to the driven gear 82, and the rotation shaft portion 104 and the rotor 70 make one rotation. With one rotation of the rotor 70, the rollers 50a to 50c also make one revolution (revolution) around the central axis 105.

At this time, one or two of the three rollers 50a to 50c are pressed against the inner peripheral surface of the roller guide 40, and the soft tube 30 is closed at that portion. When the portion is released from the closed state along with the rotation of the rotor 70, a negative pressure is generated in the soft tube 30, and the disinfectant liquid is sucked up from the bottle 7. At the same time, the soft tube 30 is squeezed by the rollers 50a to 50c, and the disinfecting liquid in the soft tube 30 sucked up from the bottle 7 moves to the nozzle 110 side, and from the discharge hole 111a of the nozzle 110 to the housing 2 It is discharged in the form of a mist toward the outside.

When the single-discharge mode is selected with the mode changeover switch 19, the pulse signal is transmitted once, and the discharge of the disinfecting liquid is completed when the rotary shaft portion 104 makes one rotation. On the other hand, when the continuous discharge mode is selected by the mode changeover switch 19, a pulse signal is transmitted from the control device 120 to the motor 81 again when the rotating shaft unit 104 makes one rotation. Thereby, the rotating shaft part 104 rotates continuously and a disinfection liquid is supplied continuously. Accordingly, the user can obtain a sufficient amount of the disinfectant without repeatedly putting out his / her hand before the infrared sensor 90.

At this time, in the embodiment, in the state where the lid member 60 is closed, the entire peripheral wall 61 abuts against the arch portion 40a of the roller guide 40 and pushes the whole. In this state, even if a force (a force received by the roller guide 40 from the soft tube 30 sandwiched between the roller guide 40 and the rollers 50a to 50c) acts on the roller guide 40 from the inside to the outside, The roller guide 40 does not retract and the soft tube 30 is not completely closed or pressed. Thereby, the compression ratio (degree of blockage) of the soft tube 30 is kept constant, and the effect that the discharge is stabilized is obtained.

Further, in the embodiment, since the check valve 113 is provided in the nozzle 110, the disinfecting liquid is not returned from the soft tube 30 into the bottle 7 when the pump unit 1 is not performing the discharge operation. Thereby, the effect that the discharge amount by one rotation of the rotating shaft part 104 is stabilized is obtained.

11. Replacement operation of the soft tube 30 The total number of rotations of the rotating shaft portion 104 stored in the memory of the control device 120 is proportional to the discharge amount of the disinfecting liquid. Therefore, when the total number of rotations of the rotating shaft 104 exceeds a certain threshold value, the control device 120 turns on the LED 130 and confirms that the remaining amount of the disinfectant in the bottle 7 is zero or close to zero. To inform. The user who has confirmed that the LED 130 is turned on removes the lid 7b of the bottle 7 and fills the bottle 7 with a disinfectant. At this time, there is a high possibility that the user touches not only the bottle 7 but also the soft tube 30, and it is fully conceivable that bacteria are mixed in the soft tube 30. Therefore, for example, when the dispenser 100 is disposed in a place where strict hygiene management is required, such as the entrance of an operating room, typically, the soft tube 30 is combined with the refilling of the disinfectant into the bottle 7. Is exchanged.

In the embodiment, the fluid flowing in the soft tube 30 is a disinfecting liquid that generally has a low viscosity. Therefore, in order to operate the tube pump mechanism 20 suitably, it is preferable to completely close the soft tube 30. In this case, the soft tube 30 is likely to deteriorate as compared with the case where the soft tube 30 is not completely closed. Therefore, also from the viewpoint of deterioration of the soft tube 30, it is preferable to periodically replace the soft tube 30 together with, for example, filling the bottle 7 with the disinfecting liquid.

The user first removes the front housing 4 from the housing 2 when filling the bottle 7 with the disinfectant and replacing the soft tube 30. Next, the user grasps the grip portion 63b of the latch portion 63 and presses the latch portion 63 rearward to release the engagement between the snap engagement portion 63a and the engagement groove 17c. In this state, the lid member 60 is opened by lifting the lid member 60.

In response to the opening of the lid member 60, the roller guide 40 receives the elastic force from the coil spring 41 and automatically moves backward. Thereby, the pressing of the lid member 60 against the rollers 50a to 50c is released, and the blockage of the soft tube 30 is released. In this state, the force which controls this is not acting on the tube part located on the cyclic | annular control wall 11c. In this state, the soft tube 30 is removed from the main body 10 by removing the soft tube 30 from the tube holder 16 and removing the nozzle 110 from the nozzle holding groove 17b (see FIG. 16).

Then, the soft tube 30 is also removed from the bottle 7, the bottle 7 is filled with a disinfectant, the new soft tube 30 is attached to the bottle 7, and the bottle 7 is disposed with the bottle 7.

After attaching the soft tube 30 to the pump unit 1, the user closes the lid member 60. When the lid member 60 is closed, the roller guide 40 moves forward (Y ′ direction) to the position regulated by the annular regulating wall 11c. In this state, the user presses the latch portion 63 positioned immediately above the engagement groove 17c downward. Thereby, the snap engagement portion 63a snaps into the engagement groove 17c, and the lid member 60 is fixed to the main body 10.

In this way, the user can easily replace the soft tube 30.

12 Modifications While the present invention has been described with reference to the embodiments, it should not be understood that the present invention is limited to the above-described embodiments. The features described in each embodiment may be freely combined. In addition, various improvements, design changes, and deletions may be added to the above-described embodiment.

For example, in the above-described embodiment, the example in which the pump unit 1 discharges the disinfecting liquid has been described. However, the present invention is not limited to this, and other fluids (for example, soap liquid) may be discharged. When discharging soap liquid or the like, the nozzle 110 may be changed to one suitable for discharging bubbles. In addition, in the case of a low-viscosity fluid such as a disinfectant, it is preferable to completely close the soft tube 30 with rollers 50a to 50c in order to smoothly discharge, but in the case of a high-viscosity fluid such as a soap solution Even if the soft tube 30 is not completely closed, the discharge can be performed smoothly.

In the above-described embodiment, the tube cover 74 is provided with the bearing hole 74a, and the bearing hole 74a receives the upper end portion of the rotary shaft portion 104. However, the present invention is not limited to this, for example, the bearing hole 74a may be a through hole, and a bearing hole may be provided on the bottom surface of the lid member 60 so as to receive the upper end portion of the rotating shaft portion 104.

Further, in the above-described embodiment, the amount of the disinfectant in the bottle 7 is indirectly detected based on the total number of rotations of the rotating shaft 104 calculated from the input signal from the photo interrupter 84. For example, a level sensor (for example, a capacitance type) may be provided in the bottle 7 to directly detect the amount of the disinfecting liquid in the bottle 7.

DESCRIPTION OF SYMBOLS 1 Pump unit 2 Housing 10 Main body 11 Rotor chamber 11b Guide surface 11c Annular regulation wall 19 Mode change switch 20 Tube pump mechanism 30 Soft tube 40 Roller guide 41

Coil spring

50a, 50b, 50c Roller 60 Lid member 61 Perimeter wall 70

Rotor

72a, 72b , 72c cylinder 80 driving unit 81 motor 82 driven gear 82a convex portion 84 photo interrupter 84a light emitting element 84b light receiving element 90 infrared sensor 100 dispenser 104 rotating shaft part 105 central axis 110 nozzle 111a discharge hole 120 controller

Claims

A tube pump mechanism that sucks up and discharges the fluid from a container in which a predetermined fluid is stored;
A main body on which the tube pump mechanism is disposed;
The tube pump mechanism is
A soft tube through which the fluid flows;
A roller guide and a roller for cooperating with each other to press the soft tube;
A lid member attached to the main body so as to be opened and closed;
The lid member is configured to be closed to press the roller guide against the roller and to be opened to release the roller guide from being pressed against the roller.
Dispenser.
The roller guide is disposed on a guide surface formed on the main body,
The lid member is configured to move the roller guide on the guide surface according to the degree of opening and closing thereof.
The dispenser according to claim 1.
A rotor that rotates in response to a driving force supplied from the driving unit and rotatably supports the roller;
The roller is sandwiched between the rotor and a roller pressing member;
The dispenser according to claim 1 or 2.
The drive unit includes a motor, a drive gear fixed to the output shaft of the motor, and a driven gear meshing with the drive gear,
A photo interrupter for detecting rotation of the driven gear;
The driven gear is provided with a convex portion that passes between the light emitting element and the light receiving element of the photo interrupter when the driven gear rotates.
The dispenser according to claim 3.
A nozzle attached to one end of the soft tube;
The nozzle is provided with a check valve,
The dispenser according to any one of claims 1 to 4.
Further comprising a housing constituting the appearance of the dispenser;
The main body is attached to the housing in a state of being inclined vertically downward by a predetermined angle with respect to the horizontal direction.
The dispenser according to any one of claims 1 to 5.