TWI662938B - Electric vacuum cleaner - Google Patents

Abstract

The electric vacuum cleaner of the present invention comprises: a vacuum cleaner body, which is provided with an electric blower for attracting dust and a dust collecting chamber for accommodating the attracted dust; a suction port body having a suction port for sucking dust; a connecting pipe for sucking the suction A mouth body is connected to the cleaner body; a driving wheel is provided on the suction mouth body; a motor drives the driving wheel; a control part drives and controls the motor; a handle is for the user to hold for holding; and an input part that can be input The control unit receives the output from the input unit to independently control the rotation speed of the motor, thereby changing the moving direction of the suction port body.

Description

Electric vacuum cleaner

The present invention relates to an electric vacuum cleaner.

As a prior art of the present invention, there is known an electric vacuum cleaner in which a vacuum cleaner body provided with an electric blower and a dust collecting chamber is connected to a suction inlet body having a dust suction inlet, the suction inlet body, and a suction inlet body is provided at a front portion. A forward rotating brush that rotates in the forward direction, a right rotating brush that has a rotating shaft at the right end that is perpendicular to the forward rotating brush and that rotates the suction port body to the right, and a rotating shaft that is located at the left end that is perpendicular to the forward rotating brush. And when the suction mouth body is rotated to the left, the left rotation brush moves the suction mouth body to the right, the rotation speed of the right rotation brush is higher than that of the left rotation brush, and when the suction mouth body is advanced to the left, the rotation of the left rotation brush The speed is higher than that of the right rotating brush (for example, refer to Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 2012-105845

However, in the conventional electric vacuum cleaner, although the suction port body can be moved in the front and left and right directions, it has a problem that it is difficult to move the suction port body in various directions.

The present invention has been made in view of the above-mentioned problems, and provides an electric cleaner having an input unit capable of input and capable of moving the suction port body in an arbitrary direction by the input.

The electric vacuum cleaner of the present invention includes: a vacuum cleaner body, which is provided with an electric blower for attracting dust and a dust collecting chamber for accommodating the attracted dust; A suction pipe; a connecting pipe for connecting the suction mouth body to the cleaner body; a driving wheel provided on the suction mouth body; a motor for driving the driving wheel; a control part for driving and controlling the motor; a handle for a user to hold Hold; and an inputable input section; the control section receives output from the input section to independently control the rotation speed of the motor, thereby changing the moving direction of the suction port body.

According to the present invention, the electric vacuum cleaner includes a handle for input by a user for holding, and an input part that can be input. The control part receives an output from the input part to independently control the rotation speed of the motor. Therefore, the user can The direction of movement of the suction port body is arbitrarily changed by a hand.

1‧‧‧ electric vacuum cleaner

2‧‧‧Vacuum cleaner body

4‧‧‧ connecting pipe

5‧‧‧handle

6‧‧‧Operation Department

6a‧‧‧Operation Department

7‧‧‧ Connection Department

9‧‧‧ Connection Department

11‧‧‧ Dust collection room

12‧‧‧ Dust collection filter

13‧‧‧ Electric blower

14‧‧‧Ventilation path

16‧‧‧ Attraction

17‧‧‧ Battery

20‧‧‧rotation axis

22‧‧‧output shaft

23‧‧‧ Trail pulley

24‧‧‧ Large diameter pulley

25‧‧‧Band

26L, 26R‧‧‧Drive Wheel

27L, 27R‧‧‧Open

28L, 28R‧‧‧Drive shaft

30L, 30R‧‧‧ Reducer

36L, 36R‧‧‧Rear wheels

37‧‧‧Exhaust flow path

39‧‧‧flow

40‧‧‧inhalation body

41‧‧‧Body Box

41a‧‧‧Suction port

42‧‧‧Connecting pipe department

43‧‧‧Rotating brush

50‧‧‧ underside

51‧‧‧CPU

52‧‧‧ROM

53‧‧‧RAM

54‧‧‧Control Department

55L, 55R‧‧‧Drive wheel motor

57‧‧‧motor driver circuit

58‧‧‧Rotary brush motor

59‧‧‧Motor driver circuit

61L‧‧‧Left button switch

61R‧‧‧Right button switch

62‧‧‧Power Switch

63‧‧‧Start / Stop Switch

66‧‧‧Sensor control unit

67‧‧‧Sensor

70‧‧‧Air blower motor

80‧‧‧Bending mechanism department

81‧‧‧Rotating mechanism department

92‧‧‧Motor driver circuit

CL‧‧‧ vertical line

F‧‧‧ Ground

FIG. 1 is an external perspective view showing a first embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is an explanatory diagram of an internal configuration of the electric vacuum cleaner shown in FIG. 1.

FIG. 3 is a cross-sectional view of a main part of a suction port body of the vacuum cleaner of FIG. 1.

FIG. 4 is an explanatory diagram showing a configuration and a bending operation of a connection pipe portion of the suction port body shown in FIG. 3.

FIG. 5 is an explanatory diagram showing a turning operation of the connecting pipe portion shown in FIG. 4.

Fig. 6 is a circuit diagram showing a control system of the electric vacuum cleaner of Fig. 1.

FIG. 7 is an explanatory diagram showing an operation portion of the electric vacuum cleaner of FIG. 1.

FIG. 8 is a view corresponding to FIG. 6 according to the third embodiment of the electric vacuum cleaner of the present invention.

Fig. 9 is a view corresponding to Fig. 7 in a third embodiment of the electric vacuum cleaner according to the present invention.

The electric vacuum cleaner of the present invention comprises: a vacuum cleaner body, which is provided with an electric blower for attracting dust and a dust collecting chamber for accommodating the attracted dust; a suction port body having a suction port for sucking dust; a connecting pipe for sucking the suction A mouth body is connected to the cleaner body; a driving wheel is provided on the suction mouth body; a motor drives the driving wheel; a control part drives and controls the motor; a handle is for use The control unit receives an output from the input unit to independently control the rotation speed of the motor, thereby changing the moving direction of the suction port body.

Preferably, the suction port body is provided with a connection pipe portion connecting the front end of the connection pipe; the connection pipe portion is provided with a bending mechanism portion to support the connection pipe so as to be bendable in the forward direction of the suction port body; and A rotating mechanism part supports the curved connecting tube so as to be able to rotate leftward and rightward with respect to the advancing direction of the suction port body; the input section is provided with a sensor for detecting a rotation angle of the connecting tube provided near the rotating mechanism part .

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

The control unit may also change the rotation speed of the motor according to the detection angle of the sensor.

The input unit may be provided with a manual switch. The manual switch 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 using embodiments shown in the drawings. The present invention is not limited to the following embodiments.

(Embodiment 1)

FIG. 1 is an external perspective view showing the first embodiment of the electric vacuum cleaner according to the present invention, and FIG. 2 is an explanatory diagram of the internal configuration of the electric vacuum cleaner shown in FIG. 1.

(Overall composition of electric vacuum cleaner)

As shown in FIG. 1, the electric vacuum cleaner 1 includes a vacuum cleaner body 2, a suction port body 40, and a connection pipe (extension tube) 4 that air-tightly connects the cleaner body 2 to the suction port body 40.

The cleaner body 2 includes a handle 5 held by an operator's hand, an operation portion 6 provided on the handle 5 and having a start / stop switch, and a connection portion 7 accommodating the root end of the connection tube 4 and detachably connected.

A connecting portion 9 is provided at the front end of the connecting pipe 4. The connecting portion 9 accommodates the upper end of the connecting pipe portion 42 and is detachably connected.

The connection pipe portion 42 includes a mechanism capable of bending the connection pipe 4 in the angle range of 90 degrees in the front-rear direction with respect to the suction port body 40 as described later.

In addition, as shown in FIG. 2, the dust collector main body 2 is provided with a removable dust collecting chamber 11, a dust collecting filter 12 provided on a downstream side of the dust collecting chamber 11, an electric blower 13, and a dust collecting filter 12. A ventilation path 14 to the electric blower 13, an exhaust flow path 37 provided downstream of the electric blower 13, and a flow path 39 connecting the connection portion 7 and the dust collecting chamber 11.

A well-known cyclone can be applied to the dust collecting chamber 11. In addition, the cleaner body 2 is replaceably filled with a battery 17.

1 and 2 show a state where the electric vacuum cleaner 1 stands on the ground. That is, the angle between the connecting pipe 4 and the ground F is slightly greater than 90 degrees, and the center of gravity of the cleaner body 2 is in a balanced state with the electric cleaner 1 standing relative to the ground F.

(Composition of the suction port body)

FIG. 3 is a cross-sectional view of a main part of a suction port body of the vacuum cleaner of FIG. 1. As shown in the figure, the suction port body 40 includes a main body box 41 having a bottom surface 50 provided with a suction port 41a extending in the left-right direction (direction of arrow A), a connecting pipe portion 42 connected to the rear of the main body box 41, The suction port 41 a is rotatably supported by the rotary brush 43 of the rotary shaft 20 extending in the left-right direction, and the rotary brush motor 58 that drives the rotary brush 43 to rotate.

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 output shaft 20 of the rotary brush 43 are coupled by a belt 25, and the rotational force of the rotary brush motor 58 is transmitted to the rotary brush. 43.

On the bottom surface 50 of the main body box 41, further left and right ends behind the rotating brush 43, left and right driving wheels 26L and 26R are provided so as to protrude toward the ground F (FIG. 2) through the openings 27L and 27R, respectively.

The drive wheel motors 55L and 55R that drive the drive wheels 26L and 26R, respectively, are provided on the bottom surface 50 through the reducers 30L and 30R, and the output shafts of the reducers 30L and 30R are used as the drive shafts 28L and 28R of the drive wheels 26L and 26R, 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 rotating brush 43.

In addition, a suction flow path 16 is provided in the center of the main body box 41 and extends slenderly in the front-rear direction and connects the suction port 41 a and the connection pipe portion 42. The connecting pipe section 42 includes a bending mechanism section 80 that bends the connecting pipe 4 (FIGS. 1 and 2) connected to the connecting pipe section 42 forward and backward, and a rotating mechanism section 81 that rotates left and right, as described later.

In addition, a pair of rear wheels 36L and 36R are provided at the rear of the main body box 41. The rear wheels 36L and 36R are free wheels which are supported to rotate 360 degrees in parallel with each axle and the bottom surface 50. As described later, the main body box 41 is held to smoothly change the direction of the suction port body 40 driven by the driving wheels 26L and 26R.

(Bending / turning mechanism of the connecting pipe part)

FIG. 4 is a side view of the suction port 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. 4. Rear view.

As shown in FIG. 4, the connection pipe portion 42 is connected to the suction flow path 16 through the bending mechanism portion 80 and the rotation mechanism portion 81 at the rear portion of the suction port body 40.

In addition, as shown in FIG. 4, the bending mechanism portion 80 supports the connecting pipe portion 42 from a posture that is substantially vertical to the ground F to a posture that is substantially horizontal toward the rear, that is, at an angle θ (about 90 degrees). The range bends forward and backward.

In addition, as shown in FIG. 5, the rotation mechanism portion 81 supports the connection pipe portion 42 from a posture perpendicular to the ground F (position along the vertical line CL) to a substantially horizontal posture, that is, from the vertical line CL The rotation angles θ L and θ R in the left-right direction are about 90 degrees, respectively. In addition, since 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, detailed descriptions thereof are omitted.

In addition, as shown in FIGS. 3 and 4, the rotation mechanism portion 81 is provided with a rotation detection sensor 67 that detects a rotation state of the connection tube portion 42 from the vertical line CL to the left and right directions.

(Construction of control system)

FIG. 6 is a circuit diagram showing a control system (control circuit) of the electric vacuum cleaner of FIG. 1.

As shown in the figure, this control circuit includes a microcomputer control unit 54 including a CPU 51, a ROM 52, and a RAM 53, an operation unit 6 that inputs an operation signal to the control unit 54, and individually controls the drive wheels that drive the left and right drive wheels 26L, 26R, respectively. The motor driver circuit 57 for the motors 55L and 55R, the motor driver circuit 59 for controlling the rotary brush motor 58 for driving the rotary brush 43, the motor driver circuit 92 for controlling the blower motor 70 incorporated in the electric blower 13, The power of the battery 17 is supplied to a power switch 62 of the control circuit, and a sensor control unit 66 that drives and controls the sensor 67.

After power is supplied from the battery 17 to the motor driver circuits 57, 59, 92, the control unit 54, the operation unit 6, and the sensor control unit 66, the control unit 54 receives the outputs from the operation unit 6 and the sensor 67 to control the motor driver Circuitry 57,59,92.

The sensor 67 is provided in the rotation mechanism portion 81 (see FIGS. 3 and 4) as described above. In this embodiment, as the sensor 67, the connection pipe portion 42 (that is, the connection pipe 4) shown in FIG. 5 is used in combination. ) The rotation angle θ L from the vertical line CL to the left becomes θ L ≧ △ θ (in this embodiment, Δθ = 10 degrees), the switch that is turned on and the rotation angle θ R to the right become θ R ≧ △ θ is a conducting switch. In addition to the mechanical switch, it is preferable to use a photo interrupter or a magnetic proximity switch.

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

(Action of electric vacuum cleaner)

When the electric vacuum cleaner 1 configured as described above is installed on the ground as shown in FIG. 1, when a user holds the handle 5 from behind the electric vacuum cleaner 1 and pulls the connecting pipe 4 forward, the connecting pipe 4 is bent by the mechanism portion 80 (FIG. 4), the angle corresponding to the height of the user will be inclined backward, for example, about 20 to 40 degrees.

Therefore, when the user presses the power switch 62 of the operation section 6 (FIG. 7) to turn on, and presses the start / stop switch 63 to turn on, the drive wheel motors 55L, 55R, the blower motor 70, and the rotary brush motor 58 are turned on. Start driving.

Therefore, the suction port body 40 automatically starts to advance, and the rotary brush 43 is rotated, and the electric blower is driven to start the cleaning operation. As shown in FIG. 2, the dust on the ground is concentrated by the rotation of the rotary brush 43. As shown in FIG.

The air containing the dust attracted to the dust collection chamber 11 is filtered by the dust collection 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 supplemented by the dust collection filter 12 drops due to gravity and is concentrated on the bottom of the dust collection chamber 11. When the dust collection volume of the dust collection chamber 11 reaches the maximum allowable amount, the operator removes the dust collection chamber 11 from the suction The duster body 1 is removed and the concentrated dust is discarded. In addition, fine dust attached to the dust collecting filter 12 without falling from the dust collecting filter 12 is removed from the dust collecting filter 12 by washing or the like.

During the cleaning operation, when the user maintains the inclination of the connecting pipe 4 within a range of 10 degrees (± 10 degrees) from the vertical line CL (Figure 5) to the left and right directions, the drive wheels 26L, 26R rotate at the same rotation speed in the same direction. , The suction port 40 advances straight.

Next, when the user tilts the connecting pipe 4 from the vertical line CL (Fig. 5) to an angle of more than 10 degrees to the left, the sensor 67 detects this state and inputs it to the control section 54. The control section 54 controls the motor driver 57 to drive The rotation speed of the wheel 26L is lower than the rotation speed of the driving wheel 26R.

As a result, the suction port body 40 is rotated in the left direction, and the rotation radius is inversely proportional to the difference between the rotation speeds of the drive wheels 26L and 26R. Next, 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 driving wheels 26L, 26R rotate again at the same rotation speed, and the suction port 40 advances straight.

Next, when the user inclines the connecting pipe 4 from the vertical line CL (FIG. 5) to an angle of more than 10 degrees to the right, the sensor 67 detects this state and inputs it to the control section 54. The control section 54 controls the motor driver 57 to drive The rotation speed of the wheel 26R is lower than the rotation speed of the driving wheel 26L.

Thereby, the suction inlet body 40 rotates to the right direction. Next, 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 driving wheels 26L, 26R rotate again at the same rotation speed, and the suction port 40 advances straight.

As described above, as long as the operator inclines the connection pipe 4 to the left and right with the hand holding the handle 5, the suction port body 40 can be operated in any direction, and thus the workability of the electric cleaner is improved.

At the end of the cleaning operation, the operator presses the start / stop switch of the operation section 6 (FIG. 7) to “stop”. Thereby, the walking 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 presses the power switch 62 of the operation section 6 to When it is OFF, the electric vacuum cleaner 1 returns to the posture shown in FIG. 1 and FIG. 2, stands on the ground F again, and the cleaning operation ends.

(Embodiment 2)

In the second embodiment of the present invention, the sensor 67 (refer to FIGS. 3 and 4) of the first embodiment uses an angle sensing method that measures the rotation angle of the connecting pipe portion 42 shown in FIG. 5 with respect to the left-right direction of the vertical line CL. The controller and control unit 54 controls the drive wheel motors 55L and 55R so that the difference between the rotation speed of the left and right drive wheels is proportional to the magnitude of the measured rotation angle. The other configurations are the same as those of the first embodiment. In addition, as the angle sensor, a rotary encoder, a position meter, or the like can be used.

Therefore, in this embodiment, during the cleaning operation, when the user maintains the rotation angles θ L and θ R of the connection tube 4 relative to the vertical line CL (FIG. 5) to θ L = θ R = 0, the driving wheel 26L, The 26R rotates in the same direction at the same rotation speed, and the suction port 40 advances straight.

Next, when the user inclines the connection pipe 4 to the left 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 θ L and inputs it to the control unit 54. The control unit 54 controls the motor driver 57 so that the rotation speed of the driving wheel 26L is lower than the rotation speed of the driving wheel 26R to a rotation speed that is proportional to θ L.

As a result, the suction port body 40 is rotated in the left direction, and the rotation radius is inversely proportional to the difference between the rotation speeds of the drive wheels 26L and 26R, and becomes smaller as θ L becomes larger. Therefore, the user can adjust the rotation angle of the suction port body 40 to the left by increasing or decreasing the inclination (rotation angle θ L) of the connection pipe 4.

The same is true when the user inclines the connection tube 4 to the right with respect to the vertical line CL (FIG. 5), and can adjust the rotation of the suction port body 40 to the right by increasing or decreasing the inclination (rotation angle θ R) of the connection tube 4. The size of the angle.

Next, when the user returns the connection tube 4 to a position corresponding to the vertical line CL (FIG. 5), the driving wheels 26L, 26R rotate again at the same rotation speed, and the suction port 40 advances straight.

As described above, the operator can change the angle that the connecting pipe 4 is tilted to the left and right with the hand holding the handle 5, and can rotate the suction port body 40 at an arbitrary rotation angle. Therefore, the operation of the suction port body 40 is easy, and the workability of the electric cleaner Promotion.

(Embodiment 3)

FIG. 8 is a diagram corresponding to FIG. 6 according to the third embodiment of the present invention, and FIG. 9 is a diagram corresponding to FIG. 7 according to the third embodiment of the present invention. In this embodiment, the sensor 67 shown in FIG. 4 and FIG. 6 and the sensor control unit 66 shown in FIG. 6 are removed from the first embodiment, and the operation unit 6 shown in FIG. 1, FIG. 6 and FIG. The operation section 6a shown in FIG. 9 is replaced.

In addition to the same power switch 62 and start / stop switch 63 as in the first embodiment, the operation section 6a shown in FIG. 9 is provided with a left button switch 61L and a right button switch 61R.

Next, the control unit 54 (FIG. 8) controls the motor driver circuit 57 so that, while the left button switch 61L is being pressed, the rotation speed of the drive wheel 26L is lower than the rotation speed of the drive wheel 26R by a predetermined rotation speed, and the right button While the switch 61R is being pressed, the rotation speed of the drive wheel 26R is lower than the rotation speed of the drive wheel 26L by a predetermined rotation speed. The other structures are the same as those of the first embodiment.

Therefore, in this embodiment, when the user does not press the left button switch 61L and the right button switch 61R during the cleaning operation, the driving wheels 26L, 26R rotate in the same direction at the same rotation speed, and the suction port 40 advances straight.

Next, when the user presses the left button switch 61L with the hand holding the handle 5, the control unit 54 controls the motor driver circuit 57 so that the rotation speed of the drive wheel 26L is lower than the rotation speed of the drive wheel 26R during the continuous pressing.

As a result, the suction port body 40 is rotated in the left direction, and the rotation radius is inversely proportional to the difference between the rotation speeds of the drive wheels 26L and 26R. Next, when the user does not press the left button switch 61L, the driving wheels 26L, 26R rotate again at the same rotation speed, and the suction port 40 advances straight.

Next, when the user presses the right button switch 61R with the hand holding the handle 5, the control unit 54 controls the motor driver circuit 57 during the continuous pressing so that the rotation speed of the drive wheel 26R is lower than the rotation speed of the drive wheel 26L.

Thereby, the suction inlet body 40 rotates to the right direction. Next, when the user does not press the right button switch 61R, the driving wheels 26L, 26R rotate again at the same rotation speed, and the suction port 40 advances straight.

As described above, the operator can press the left button switch 61L or the right button switch 61R of the operation portion 6a with the hand holding the handle 5 to move the suction port body 40 in any direction. Therefore, the suction port body 40 moves The operation is easy, and the workability of the electric vacuum cleaner is improved.

Claims (5)

An electric vacuum cleaner includes: a vacuum cleaner body, which is provided with an electric blower for attracting dust and a dust collecting chamber for accommodating the attracted dust; a suction port body having a suction port for suctioning the dust; Connected to the vacuum cleaner body; a driving wheel provided on the suction port body; a motor driving the driving wheel; a control part drivingly controlling the motor; a handle for a user to hold for holding; and an input part that can be input; the The control unit receives the output from the input unit to independently control the rotation speed of the motor, thereby changing the moving direction of the suction port body. For example, the electric vacuum cleaner according to the first patent application scope, wherein the suction port body includes a connection pipe portion connected to the front end of the connection pipe; and the connection pipe portion includes a bending mechanism portion to support the connection pipe so as to be able to follow the connection pipe. The forward direction of the suction port body is curved; and a rotating mechanism portion supports the curved connecting pipe so as to be able to rotate in a left-right direction with respect to the forward direction of the suction port body; the input portion is provided with a detection device provided near the rotating mechanism portion. Sensor for connecting the rotation angle of the tube. For example, the electric vacuum cleaner according to the second patent application range, wherein the control unit makes the rotation speed of the motor different when the sensor detects a rotation angle exceeding a predetermined range. For example, the electric vacuum cleaner according to item 2 of the patent application scope, wherein the control unit changes the rotation speed of the motor according to the detection angle of the sensor. For example, the electric vacuum cleaner according to the first patent application scope, wherein the input unit is provided with a manual switch, and the manual switch is provided near the handle, and the control unit is input to change the rotation speed of the motor.