WO2018158972A1

WO2018158972A1 - Electric vacuum cleaner

Info

Publication number: WO2018158972A1
Application number: PCT/JP2017/023389
Authority: WO
Inventors: 雅倫坪井; 基樹谷村; 松本　正士
Original assignee: シャープ株式会社
Priority date: 2017-03-02
Filing date: 2017-06-26
Publication date: 2018-09-07
Also published as: TWI662938B; TW201832711A; JPWO2018158972A1; CN110494072A

Abstract

Provided is an electric vacuum cleaner characterized by being provided with the following: a vacuum cleaner main body (2) with an electric blower (13) for drawing in dust and a dust collection chamber (11) for accommodating the dust that has been drawn in; a suction port body (40) including a suction port (41a) for sucking in the dust; a connecting pipe (4) that connects the suction port body (40) to the vacuum cleaner main body (2); drive wheels (26L, 26R) and motors (55L, 55R) for driving the drive wheels (26L, 26R), the wheels and motors being disposed in the suction port body (40); a control unit (54) that controls driving of the motors (55L, 55R); a handle (5) that a user grips to hold the vacuum cleaner; and an input unit that can accept input. The electric vacuum cleaner is also characterized in that the control unit (54) receives output from the input unit to control the rotational speeds of the motors (55L, 55R) independently so that the direction of movement of the suction port body (40) is caused to change.

Description

Vacuum cleaner

This invention relates to a vacuum cleaner.

As a background art of this invention, a suction port body having a dust suction port is connected to a vacuum cleaner body incorporating an electric blower and a dust collecting chamber, and the suction port body is a direction in which the suction port body is advanced to the front part. The front rotating brush rotates in the right direction, the right rotating brush rotates in the direction that moves the suction port to the right and the rotating shaft moves to the right. In contrast, each has a left rotating brush that is positioned vertically and rotates in a direction that moves the suction port to the left, and when the suction port is advanced to the right, the rotation speed of the right rotating brush is set higher than that of the left rotating brush. A vacuum cleaner is known in which the rotation speed of the left rotating brush is set to be higher than that of the right rotating brush when proceeding to the left (see, for example, Patent Document 1).

JP 2012-105845 A

However, in such a conventional vacuum cleaner, the suction port body can be moved in the forward and left and right directions, but it is difficult to move in any direction. .

The present invention has been made in view of such circumstances, and provides an electric vacuum cleaner that includes an input unit that can be input and can move the suction port body in an arbitrary direction by the input. is there.

The present invention relates to a vacuum cleaner body including an electric blower for sucking dust and a dust collecting chamber for storing sucked dust, a suction port body having a suction port for sucking dust, and the suction port body. A connection pipe connected to the cleaner body, a drive wheel provided in the suction port body and a motor for driving the drive wheel, a control unit for driving and controlling the motor, a handle for a user to hold, An input unit capable of inputting, wherein the control unit receives the output from the input unit and independently controls the rotation speed of the motor, thereby changing the moving direction of the suction port body. An electric vacuum cleaner is provided.

According to this invention, the vacuum cleaner includes a handle that the user holds to hold and an input unit that can be input, and the control unit receives the output from the input unit and independently controls the rotation speed of the motor. Therefore, the user can arbitrarily change the moving direction of the suction port with the hand holding the handle.

It is an external appearance perspective view which shows Embodiment 1 of the vacuum cleaner of this invention. It is internal structure explanatory drawing of the vacuum cleaner shown in FIG. It is principal part sectional drawing which shows the suction inlet of the vacuum cleaner of FIG. It is explanatory drawing which shows the structure and bending operation | movement of a connection pipe part of the suction inlet shown in FIG. It is explanatory drawing which shows rotation operation | movement of the connection pipe part shown in FIG. It is an electric circuit diagram which shows the control system of the vacuum cleaner of FIG. It is explanatory drawing which shows the operation part of the vacuum cleaner of FIG. It is a FIG. 6 corresponding view of Embodiment 3 of the vacuum cleaner of this invention. It is a FIG. 7 corresponding view of Embodiment 3 of the electric vacuum cleaner of this invention.

An electric vacuum cleaner of the present invention includes an electric blower for sucking dust, a vacuum cleaner body having a dust collecting chamber for storing sucked dust, a suction port body having a suction port for sucking dust, and the suction A connecting pipe for connecting the mouth body to the cleaner body, a drive wheel provided in the suction mouth body and a motor for driving the same, a control unit for driving and controlling the motor, and a grip for the user to hold. A handle and an input unit capable of input, wherein the control unit receives an output from the input unit and independently controls a rotation speed of the motor, thereby changing a moving direction of the suction port body; It is characterized by.

The suction port body includes a connection pipe portion to which a tip of the connection pipe is connected, and the connection pipe portion includes a bending mechanism portion that supports the connection tube so that the connection tube can be bent along a forward direction of the suction port body, and a bending mechanism. A rotating mechanism that supports the connecting pipe so as to be rotatable in the left-right direction with respect to the advancing direction of the suction port body, and the input unit is provided in the vicinity of the rotating mechanism. It is preferable to provide a sensor that detects the degree of rotation.

The control unit may vary the rotation speed of the motor when the sensor detects a rotation angle exceeding a predetermined range.

The control unit may change the rotation speed of the motor in accordance with the detection angle of the sensor.

The input unit may include a manual switch that is provided in the vicinity of the handle and inputs the control unit to change the rotation speed of the motor.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. The present invention is not limited to the embodiments.
(Embodiment 1)
1 is an external perspective view showing Embodiment 1 of the vacuum cleaner of the present invention, and FIG. 2 is an explanatory diagram of the internal configuration of the vacuum cleaner shown in FIG.

<Overall configuration of vacuum cleaner>
As shown in FIG. 1, the vacuum cleaner 1 includes a cleaner body 2, a suction port body 40, and a connection pipe (extension pipe) 4 that hermetically connects the cleaner body 2 to the suction port body 40. .

The vacuum cleaner main body 2 includes a handle 5 held by a worker, an operation unit 6 provided on the handle 5 and having a switch for starting / stopping, and a connection unit that receives the proximal end of the connection pipe 4 and removably connects it. 7 is provided.

A connecting portion 9 is provided at the tip of the connecting pipe 4 to receive and connect the upper end of the connecting pipe portion 42 of the suction port body 40 so as to be detachable.
Moreover, the connection pipe part 42 is equipped with the mechanism which can bend the connection pipe 4 with respect to the suction inlet 40 in the front-back direction at an angle range of 90 degrees so that it may mention later.

As shown in FIG. 2, the cleaner body 2 includes a dust collection chamber 11 that is detachably installed, a dust collection filter 12 that is provided on the downstream side of the dust collection chamber 11, an electric blower 13, and a dust collection filter 12. And an air flow path 14 that connects the electric blower 13, an exhaust flow path 37 provided downstream of the electric blower 13, and a flow path 39 that connects the connection portion 7 and the dust collection chamber 11.

In addition, a well-known cyclone type can be suitably used for the dust collection chamber 11. Moreover, the battery 17 is loaded in the cleaner main body 2 in a replaceable manner.

FIG. 1 and FIG. 2 show a state where the vacuum cleaner 1 is standing on the floor surface F. That is, the angle formed by the connecting pipe 4 and the floor surface F is slightly larger than 90 degrees, and the center of gravity of the cleaner body 2 is in a state of equilibrium so that the vacuum cleaner 1 is independent from the floor surface F.

<Configuration of suction port>
FIG. 3 is a cross-sectional view of an essential part showing a suction port body of the vacuum cleaner of FIG. As shown in the figure, the suction port body 40 includes a main body case 41 having a bottom surface 50 provided with a suction port 41a extending in the left-right direction (arrow A direction), and a connecting pipe portion connected to the rear portion of the main body case 41. 42, a rotary brush 43 rotatably supported by a rotary shaft 20 extending in the left-right direction at a suction port 41a in the main body case 41, and a rotary brush motor 58 that rotationally drives the rotary brush 43.

The small-diameter pulley 23 provided on the output shaft 22 of the rotary brush motor 58 and the large-diameter pulley 24 provided on the rotary shaft 20 of the rotary brush 43 are coupled by the belt 25, and the rotational force of the rotary brush motor 58 rotates. It is transmitted to the brush 43.

On the bottom surface 50 of the main body case 41, left and

right driving wheels

26L and 26R are further partially provided toward the floor F (FIG. 2) through the

openings

27L and 27R, respectively, at the left and right ends of the rear side of the rotating brush 43. It is provided to protrude.

Drive wheel motors 55L and 5R for driving 5

drive wheels

26L and 26R, respectively, are installed on the bottom surface 50

via reduction gears

30L and 30R, and the output shafts of

reduction gears

30L and 30R drive the

drive wheels

26L and 26R. Used as

shafts

28L and 28R, respectively. The

drive wheel motors

55L and 55R are arranged so that the

drive shafts

28L and 28R are aligned on a straight line parallel to the rotary brush 43.

In the center of the main body case 41, a suction channel 16 is provided that extends in the front-rear direction and connects the suction port 41a and the connection pipe portion 42. As will be described later, the connection pipe section 42 includes a bending mechanism section 80 that bends the connection pipe 4 (FIGS. 1 and 2) connected to the connection pipe section 42 back and forth, and a rotation mechanism that rotates left and right. Part 81.

Further, a pair of

rear wheels

36L and 36R are provided at the rear part of the main body case 41. The

rear wheels

36L and 36R are freewheels in which the respective axles are supported so as to be able to rotate 360 degrees parallel to the bottom surface 50, and the direction change of the suction port body 40 by the

drive wheels

26L and 26R is smooth as will be described later. The body case 41 is held as is done.

<Bending / turning mechanism of connecting pipe>
4 is a side view of the suction port body showing the configuration and bending operation of the connection pipe portion 42 of the suction port body 40 shown in FIG. 3, and FIG. 5 is a suction port body showing the rotation operation of the connection pipe portion 42 shown in FIG. FIG.
As shown in FIG. 4, the connection pipe portion 42 is connected to the suction flow path 16 via the bending mechanism portion 80 and the rotation mechanism portion 81 at the rear portion of the suction port body 40.

Then, as shown in FIG. 4, the bending mechanism portion 80 has the connection pipe portion 42 from a posture that is substantially perpendicular to the floor surface F to a posture that is substantially horizontal toward the rear, that is, an angle θ (about 90 degrees). In such a range, it is configured to be supported so that it can be bent in the front-rear direction.

Further, as shown in FIG. 5, the rotation mechanism portion 81 causes the connecting pipe portion 42 to be bent from a posture perpendicular to the floor surface F (position along the vertical line CL) to a substantially horizontal posture, that is, vertical. The rotation angle θL, θR in the left-right direction from the line CL is configured to be supported so as to be rotatable until each becomes about 90 degrees. The structures of the bending mechanism portion 80 and the rotation mechanism portion 81 are well known in the technical field of the present invention, and thus detailed description thereof is omitted.

As shown in FIGS. 3 and 4, the rotation mechanism portion 81 is provided with a rotation detection sensor 67 that detects the state of rotation of the connection pipe portion 42 from the vertical line CL in the left-right direction. .

<Control system configuration>
6 is an electric circuit diagram showing a control system (control circuit) of the vacuum cleaner of FIG.
As shown in the figure, this control circuit drives a control unit 54 having a microcomputer comprising a CPU 51, ROM 52 and RAM 53, an operation unit 6 for inputting an operation signal to the control unit 54, and left and

right drive wheels

26L and 26R. Motor driver circuit 57 for individually controlling the

drive wheel motors

55L and 55R to be driven, motor driver circuit 59 for controlling the motor for rotary brush 58 for driving the rotary brush 43, and a blower motor incorporated in the electric blower 13 A motor driver circuit 92 for controlling 70, a power switch 62 for supplying power from the battery 17 to the control circuit, and a sensor control unit 66 for driving and controlling the sensor 67.

When power is supplied from the battery 17 to the

motor driver circuits

57, 59, and 92, the control unit 54, the operation unit 6, and the sensor control unit 66, the control unit 54 outputs outputs from the operation unit 6 and the sensor 67. In response, the

motor driver circuits

57, 59, and 92 are controlled.

As described above, the sensor 67 is provided in the rotation mechanism portion 81 (see FIGS. 3 and 4). In this embodiment, the sensor 67 is perpendicular to the connection pipe portion 42 (that is, the connection tube 4) shown in FIG. When the rotation angle θL in the left direction from the line CL becomes θL ≧ Δθ (in this embodiment, Δθ = 10 degrees), the switch that is turned on, and when the rotation angle θR in the right direction becomes θR ≧ Δθ. It is used in combination with a switch that turns on. In addition to a mechanical switch, a photo interrupter, a magnetic proximity switch, or the like is preferably used as this switch.

FIG. 7 is an explanatory diagram of the operation unit 6 provided on the handle 5 (FIG. 1). As shown in the figure, the operation unit 6 is provided with a start / stop switch 63 and a power switch 62 (FIG. 6).

<Operation of vacuum cleaner>
When the vacuum cleaner 1 configured in this way is installed on the floor as shown in FIG. 1, when the user pulls the connecting pipe 4 toward the front by grasping the handle 5 from the rear of the vacuum cleaner 1. The connecting pipe 4 is inclined backward by an angle corresponding to the height of the user, for example, about 20 to 40 degrees by the action of the bending mechanism 80 (FIG. 4).

Therefore, when the user presses the power switch 62 of the operation unit 6 (FIG. 7) to turn it ON and presses the start / stop switch 63 to “start”, the

drive wheel motors

55L and 55R, the blower motor 70, and the rotary brush motor 58 starts driving.

Thereby, the suction port body 40 starts to advance automatically, and at the same time, the rotating brush 43 rotates, the electric blower is driven, and the cleaning work is started. The dust on the floor surface is collected by the rotation of the rotating brush 43 and is sucked into the dust collecting chamber 11 through the suction channel 16, the connecting pipe 4 and the channel 39 from the suction port 41 a as shown in FIG. 2.

The air containing the dust sucked into the dust collecting chamber 11 is filtered by the dust collecting filter 12, and only clean air is discharged from the electric blower 13 through the flow path 14 to the outside through the exhaust flow path 37.

On the other hand, the dust collected by the dust collection filter 12 falls by gravity and is collected at the bottom of the dust collection chamber 11. When the dust collection amount in the dust collection chamber 11 reaches the allowable maximum amount, the operator removes the dust collection chamber 11 from the cleaner body 2 and discards the accumulated dust. In addition, the fine dust adhering to the dust collection filter 12 without falling from the dust collection filter 12 is removed from the dust collection filter 12 by washing or the like.

If the user maintains the inclination of the connecting pipe 4 within a range within 10 degrees (± 10 degrees) from the vertical line CL (FIG. 5) during the cleaning operation, the

drive wheels

26L and 26R are the same. Rotating in the same direction at the rotational speed, the suction port body 40 advances straight.

Next, when the user tilts the connecting pipe 4 leftward from the vertical line CL (FIG. 5) at an angle larger than 10 degrees, the sensor 67 detects the state and inputs it to the control unit 54. Controls the motor driver circuit 57 so that the rotational speed of the drive wheel 26L is lower than the rotational speed of the drive wheel 26R.

Thereby, the suction port body 40 turns leftward. The magnitude of the turning radius is inversely proportional to the difference in rotational speed between the

drive wheels

26L and 26R. When the user returns the inclination of the connecting pipe 4 to a range within 10 degrees with respect to the vertical line CL (FIG. 5), the

drive wheels

26L and 26R rotate again at the same rotational speed, and the suction port body 40 Go straight ahead.

Next, when the user tilts the connecting pipe 4 to the right at an angle larger than 10 degrees from the vertical line CL (FIG. 5), the sensor 67 detects the state and inputs it to the control unit 54. Controls the motor driver circuit 57 so that the rotational speed of the drive wheel 26R is lower than the rotational speed of the drive wheel 26L.

Thereby, the suction port body 40 turns rightward. When the user returns the inclination of the connecting pipe 4 to a range within 10 degrees with respect to the vertical line CL (FIG. 5), the

drive wheels

Thus, the operator can drive the suction port body 40 in any direction simply by tilting the connecting pipe 4 left and right with the hand holding the handle 5, so that the workability of the vacuum cleaner is improved.

When finishing the cleaning work, the operator presses the start / stop switch of the operation unit 6 (FIG. 7) to “stop”. As a result, the travel operation by the

drive wheels

26L, 26R, the rotation operation of the rotary brush 43, and the suction operation of the suction port 41a are stopped. Therefore, the operator pushes the power switch 62 of the operation unit 6 to turn it off, returns the vacuum cleaner 1 to the posture shown in FIGS. 1 and 2 and makes it stand on the floor surface F again, and finishes the cleaning work.

(Embodiment 2)
In the second embodiment of the present invention, an angle sensor that measures the rotation angle in the left-right direction with respect to the vertical line CL of the connection pipe portion 42 shown in FIG. In use, the control unit 54 controls the

drive wheel motors

55L and 55R so that the difference between the rotational speeds of the left and right drive wheels is proportional to the measured rotation angle. Other configurations are the same as those of the first embodiment. In addition, a rotary encoder, a potentiometer, etc. can be used for an angle sensor.

Therefore, in this embodiment, when the user maintains the rotation angles θL and θR corresponding to the vertical line CL (FIG. 5) of the connecting pipe 4 during the cleaning operation, θL = θR = 0. The

drive wheels

26L and 26R rotate in the same direction at the same rotational speed, and the suction port body 40 advances straight.

Next, when the user tilts the connection pipe 4 leftward with respect to the vertical line CL (FIG. 5), that is, when the connection pipe portion 42 is rotated to the left, the sensor 67 detects the rotation angle θL. The control unit 54 controls the motor driver circuit 57 so that the rotational speed of the drive wheel 26L is lower than the rotational speed of the drive wheel 26R to a rotational speed proportional to θL.

Thereby, the suction port body 40 turns leftward, but the radius of the turn is inversely proportional to the difference between the rotational speeds of the

drive wheels

26L and 26R and decreases as θL increases. Therefore, the user can adjust the magnitude of the leftward turning angle of the suction port body 40 by adjusting the magnitude of the inclination (rotation angle θL) of the connecting pipe 4.

Similarly, when the user tilts the connection pipe 4 in the right direction with respect to the vertical line CL (FIG. 5), the magnitude of the turning angle of the suction port body 40 in the right direction is similarly set to the inclination of the connection pipe 4 ( It can be adjusted by adjusting the magnitude of the rotation angle θR).

Then, when the user returns the connecting pipe 4 to the position corresponding to the vertical line CL (FIG. 5), the

drive wheels

26L and 26R rotate again at the same rotational speed, and the suction port body 40 advances straight.

As described above, the operator can turn the suction port body 40 at an arbitrary turning angle only by changing the angle at which the connection pipe 4 is tilted left and right with the hand holding the handle 5. Operation becomes easy and workability of the vacuum cleaner is improved.

(Embodiment 3)
8 is a diagram corresponding to FIG. 6 of the third embodiment of the present invention, and FIG. 9 is a diagram corresponding to FIG. 7 of the third embodiment of the present invention. In this embodiment, the sensor 67 shown in FIGS. 3, 4 and 6 and the sensor control unit 66 shown in FIG. 6 are removed from the first embodiment, and the operation unit 6 shown in FIGS. The operation unit 6a shown in FIG. 9 is replaced.

9 is provided with a left push button switch 61L and a right push button switch 61R in addition to the same power switch 62 and start / stop switch 63 as in the first embodiment.

Then, the control unit 54 (FIG. 8) sets the rotational speed of the drive wheel 26L to be lower than the rotational speed of the drive wheel 26R by a predetermined rotational speed while the left push button switch 61L is being pressed, While the push button switch 61R is being pressed, the motor driver circuit 57 is controlled so that the rotational speed of the drive wheel 26R is lower than the rotational speed of the drive wheel 26L by a predetermined rotational speed. Other configurations are the same as those of the first embodiment.

Therefore, in this embodiment, when the user does not press either the left push button switch 61L or the right push button switch 61R during the cleaning operation, the

drive wheels

26L and 26R rotate in the same direction at the same rotational speed. Then, the suction port body 40 advances straight.

Next, when the user presses the left push button switch 61L with the hand holding the handle 5, the controller 54 keeps the motor driver from rotating the driving wheel 26L so that the rotational speed of the driving wheel 26L is lower than the rotational speed of the driving wheel 26R. The circuit 57 is controlled.

drive wheels

26L and 26R. When the user releases the left push button switch 61L, the

drive wheels

26L and 26R rotate again at the same rotational speed, and the suction port body 40 moves straight forward.

Next, when the user presses the right push button switch 61R with the hand holding the handle 5, the controller 54 keeps the motor driver from rotating the driving wheel 26R so that the rotational speed of the driving wheel 26R is lower than the rotational speed of the driving wheel 26L. The circuit 57 is controlled.

Thereby, the suction port body 40 turns rightward. Then, when the user releases the right push button switch 61R, the

drive wheels

As described above, the operator can drive the suction port body 40 in an arbitrary direction by simply pressing either the left push button switch 61L or the right push button switch 61R of the operation unit 6a with a hand holding the handle 5. Since it can do, movement operation of the suction inlet 40 becomes easy and the workability | operativity of a vacuum cleaner improves.

1 vacuum cleaner, 2 vacuum cleaner body, 4 connection pipe, 5 handle, 6 operation part, 7 connection part, 9 connection part, 11 dust collection chamber, 12 dust collection filter, 13 electric blower, 14 ventilation path, 16 suction flow Road, 17 battery, 20 rotating shaft, 22 output shaft, 23 small diameter pulley, 24 large diameter pulley, 25 belt, 26L, 26R drive wheel, 27L, 27R opening, 28L, 28R drive shaft, 30L, 30R reducer, 36L, 36R rear wheel, 37 exhaust flow path, 39 flow path, 40 suction port body, 41 main body case, 41a suction port, 42 connection pipe part, 43 rotating brush, 50 bottom surface, 51 CPU, 52 ROM, 53 RAM, 54 control part , 55L, 55R drive wheel motor, 57 motor driver circuit, 58 rotary brush motor, 59 motor Driver circuit, 62 a power switch, 63 start / stop switch, 67 sensor, 70 a blower motor, 80 bending mechanism portion, 81 turning part, 92 a motor driver circuit, CL vertical line, F-floor

Claims

A vacuum cleaner body including an electric blower for sucking dust and a dust collecting chamber for storing the sucked dust, a suction port body having a suction port for sucking dust, and the suction port body as the vacuum cleaner body A connection pipe connected to the suction port, a drive wheel provided in the suction port body and a motor for driving the drive wheel, a control unit for driving and controlling the motor, a handle for holding by the user, and an input capable of input A vacuum cleaner, wherein the control unit receives the output from the input unit and independently controls the rotational speed of the motor, thereby changing the moving direction of the suction port body .
The suction port body includes a connection pipe portion to which a tip of the connection pipe is connected, and the connection pipe portion includes a bending mechanism portion that supports the connection tube so that the connection tube can be bent along a forward direction of the suction port body, and a bending mechanism. A rotating mechanism that supports the connecting pipe so as to be rotatable in the left-right direction with respect to the advancing direction of the suction port body, and the input unit is provided in the vicinity of the rotating mechanism. The vacuum cleaner of Claim 1 provided with the sensor which detects a rotation angle.
3. The electric vacuum cleaner according to claim 2, wherein the control unit varies the rotation speed of the motor when the sensor detects a rotation angle exceeding a predetermined range.
The vacuum cleaner according to claim 2, wherein the control unit changes the magnitude of the rotation speed of the motor in accordance with the magnitude of the detection angle of the sensor.
2. The electric vacuum cleaner according to claim 1, wherein the input unit includes a manual switch that is provided in the vicinity of the handle and inputs the control unit to change a rotation speed of the motor.