JP2018143345A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of reducing a load on a wrist and an arm of a user by connecting means for mechanically assisting operation to change an orientation of a suction port body when cleaning work is performed, and releasing connection when cleaning work is stopped.SOLUTION: A vacuum cleaner includes a suction port body having a dust suction port, a cleaner body having a dust collection device, an extension pipe for connecting the suction port body and the cleaner body, a turning device interposed between the cleaner body and the extension pipe, and fixed to the cleaner body for swirling the suction port body through the extension pipe, or interposed between the extension pipe and the suction port body, and fixed to the extension pipe for swirling the suction port body. The turning device provided with a motor and an electromagnetic clutch transmits turning force of the motor to the suction port body through the electromagnetic clutch, thereby swirling the suction port body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vacuum cleaner.

  As a background art of this invention, in a vacuum cleaner provided with a vacuum cleaner body, a suction port body, and an extension pipe connecting the vacuum cleaner body and the suction port body, the suction port body has a suction port on the bottom surface. The suction port body has a connection pipe portion attached to the suction port body, and the connection pipe portion is configured to be swingable about the left and right axis and to be rotatable about the front and rear axis. It is known (see, for example, Patent Document 1).

  When cleaning the floor using this electric vacuum cleaner, the user moves the vacuum cleaner body back and forth by grasping the handle and moving the suction port body forward and backward through the extension pipe, and the wrist and arm are moved. By moving the cleaner body in the front-rear direction while twisting right or left, the suction port body is turned rightward or leftward via the extension pipe.

Japanese Patent Laying-Open No. 2015-159974

  However, in such a vacuum cleaner, the user moves the center of gravity of the entire vacuum cleaner including the vacuum cleaner body by twisting the wrist and arm when changing the direction of the suction port body, Since the load due to movement is applied to the wrist and arm of the user and is a burden on the user, it has been desired to reduce the burden.

  The present invention has been made in consideration of such circumstances, and can reduce the load on the wrist and arm of the user by mechanically assisting the operation of changing the direction of the suction port body in a timely manner. The vacuum cleaner which can be provided is provided.

  The present invention relates to a suction port body having a dust suction port, a cleaner body having a dust collecting device, an extension pipe connected to the suction port body and the cleaner body, and interposed between the cleaner body and the extension pipe. A rotation device that is fixed to the vacuum cleaner body and rotates the suction port body via the extension pipe, or is interposed between the extension pipe and the suction port body and is fixed to the extension pipe and rotates the suction port body. The rotating device includes a motor and an electromagnetic clutch, and transmits the rotational force of the motor to the suction port body through the electromagnetic clutch, thereby rotating the suction port body. It is to provide.

  According to the present invention, the rotating device includes the motor and the electromagnetic clutch, and transmits the rotational force of the motor to the suction port body via the electromagnetic clutch, thereby rotating the suction port body. It is possible to reduce the load on the user's wrist and arm by operating the electromagnetic clutch during the turning operation and releasing the electromagnetic clutch when the suction port body stops the turning operation.

It is a perspective view which shows the vacuum cleaner of Embodiment 1 of this invention. It is a principal part disassembled perspective view of the vacuum cleaner shown in FIG. It is internal structure explanatory drawing of the vacuum cleaner shown in FIG. It is a perspective view which shows the structure of the pipe rotation apparatus in the vacuum cleaner shown in FIG. It is a side view of the pipe rotation apparatus shown in FIG. FIG. 6 is a cross-sectional view taken along the arrow I-I in FIG. 5. It is a longitudinal cross-sectional view which shows the pipe rotation operation part in the vacuum cleaner shown in FIG. It is a longitudinal cross-sectional view of the suction inlet in the vacuum cleaner shown in FIG. It is an electric circuit diagram which shows the control system of the vacuum cleaner shown in FIG. It is a top view which shows the operation part of the vacuum cleaner shown in FIG. It is a figure explaining the change state of the direction of the suction inlet of the vacuum cleaner shown in FIG. 1, (A) is the state facing left, (B) is the state facing right. It is a FIG. 1 corresponding view which shows the vacuum cleaner of Embodiment 2 of this invention. FIG. 13 is a view corresponding to FIG. 9 in the electric vacuum cleaner shown in FIG. 12. FIG. 13 is a view corresponding to FIG. 10 in the electric vacuum cleaner shown in FIG. 12. It is FIG. 13 corresponding view of the vacuum cleaner of Embodiment 3 of this invention.

  The features of the electric vacuum cleaner of the present invention include a suction port body having a dust suction port, a vacuum cleaner body having a dust collector, an extension pipe connecting the suction port body and the vacuum cleaner body, and a vacuum cleaner body and an extension. It is interposed between the pipe and fixed to the vacuum cleaner body, and the suction port body is swiveled through the extension pipe, or is interposed between the extension pipe and the suction port body and is fixed to the extension pipe and swirled the suction port body. A rotating device that is configured to transmit a rotational force of the motor to the suction port body via the electromagnetic clutch, thereby rotating the suction port body. .

  The vacuum cleaner further includes a driver circuit that drives the motor and the electromagnetic clutch, and a control unit that controls the driver circuit, and the control unit transmits the rotational force of the motor to the suction port body during cleaning work, It is preferable to drive the electromagnetic clutch in the driver circuit so that the rotational force of the motor is not transmitted to the suction port when the cleaning operation is stopped.

  The vacuum cleaner further includes an operation unit that inputs an operation signal to the control unit, and the control unit receives the operation signal from the operation unit and causes the driver circuit to control the rotation direction of the motor, thereby You may make it determine the turning direction of a suction inlet.

  In addition, the rotating device is interposed between the extension pipe and the suction port body, and the cleaner body includes the control unit and the operation unit, a power source, and a first power line communication unit, and the rotating device And at least one of the suction port body includes the driver circuit and the second power line communication unit, the first power line communication unit and the second power line communication unit are connected by two power lines, and the power source to the driver circuit The power supply and the signal transmission from the control unit to the driver circuit may be performed through the two power lines.

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)
<Overall configuration of vacuum cleaner>
1 is a perspective view showing an electric vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is an exploded perspective view of a main part of the electric vacuum cleaner shown in FIG. 1, and FIG. 3 is an explanatory diagram of an internal configuration of the electric vacuum cleaner shown in FIG. It is. In FIG. 1, arrow x represents the left-right direction, arrow y represents the front-rear direction, and arrow z represents the up-down direction.

  As shown in these drawings, the vacuum cleaner 100 has a vacuum cleaner body 10 having an air inlet 10a and a pipe rotation device 20 connected to the air inlet 10a (FIG. 2) of the vacuum cleaner body 10 as a basic configuration. Prepare. A suction port body 40 is connected to the pipe turning device 20 via the extension pipe 30.

The cleaner body 10 includes a drive device 11 and a cyclone dust cup unit 12 that is detachably attached to the drive device 11.
The drive device 11 includes a housing 11a having the intake port 10a and the exhaust port 33, a handle 11b provided at the rear portion of the housing 11a, and an electric blower 31 provided downstream of the dust cup unit 12 via a flow path 32. , A battery 17, a circuit board having a control unit 15 (FIG. 9), an operation direction detection unit 14 (FIG. 7), and the like. The control unit 15 and the operation direction detection unit 14 will be described later.

The handle 11b is a part where the user supports the driving device 11 by hand, and is also a later-described pipe turning operation unit 13 for operating the pipe turning device 20.
An operation unit 11c having a power switch and various operation switches is provided on the upper surface of the handle 11b.

  In addition, the vacuum cleaner 100 shown in FIG.1 and FIG.3 shows the state which is independent on the floor surface F. FIG. That is, the angle formed between the extension pipe 30 and the floor surface F is slightly larger than 90 degrees, and the center of gravity of the vacuum cleaner body 10 is in a state of equilibrium so that the vacuum cleaner 100 can stand on the floor surface F.

<Pipe turning device>
4 is a perspective view showing the structure of the pipe turning device 20 in the vacuum cleaner 100 shown in FIG. 1, FIG. 5 is a side view of the pipe turning device 20 shown in FIG. 4, and FIG. FIG.

  As shown in FIGS. 2 to 6, the pipe turning device 20 includes a first connection pipe portion 21 (FIGS. 4 and 5) connected to the air inlet 10 a (FIG. 2) of the cleaner body 10, and a first connection. A second connecting pipe portion 22 (FIGS. 4 and 5) provided on the pipe portion 21 so as to be rotatable around the same axis P (FIG. 5) and connected to one end 30a (FIG. 2) of the extension pipe 30; In addition, the first connecting tube portion 21 has a rotation drive portion 23 (FIGS. 4 and 5) that rotates the second connecting tube portion 22 about the axis P.

  As shown in FIGS. 4 and 5, the first connecting pipe portion 21 communicates with the open end portion 21 a connected to the air inlet 10 a of the cleaner body 10 and the second connecting pipe portion 22 so as to be relatively rotatable. It has the connected connection part 21b and the latching recessed part 21c provided in a part of outer peripheral surface of the open end part 21a. The locking recess 21c is a locking portion 10b provided near the air inlet 10a when the open end 21a of the first connecting pipe portion 21 is inserted into the air inlet 10a (FIG. 2) of the cleaner body 10. The first connecting pipe portion 21 is locked to the intake port 10a.

The second connecting pipe part 22 is connected to the open end part 22a connected to one end part 30a (FIG. 2) of the extension pipe 30 and the connecting end part 21b of the first connecting pipe part 21 so as to be relatively rotatable. The other connecting end 22b and the lock 22c (FIGS. 2 and 4) provided in the vicinity of the open end 22a. The locking portion 22c is a locking recess 30a ₁ provided near the one end 30a when the one end 30a of the extension pipe 30 is inserted into the open end 22a of the second connecting pipe portion 22 (FIG. 2). And an internal locking claw for locking the extension pipe 30 to the open end 22a.
Further, as shown in FIG. 2, the main body portion 42a of the suction port body 40 is inserted into the other end 30b of the extension pipe 30 and locked in the same manner, whereby the extension pipe 30 is connected to the suction port body 40. The

  Further, on the outer peripheral surfaces of the first and second connecting pipe portions 21 and 22, the electric power from the battery 17 (FIG. 3) in the cleaner body 10 is supplied to the rotating brush in the suction port body 40 through the extension pipe 30. A plurality of conductive cables (not shown) for supplying the motor 43a (FIG. 9) and terminal portions at both ends of each conductive cable are provided, and these are covered with a cover member.

  The rotation drive unit 23 includes a clutch box 23d that is fixed to the outer peripheral surface of the first connecting pipe portion 21 and extends in a direction perpendicular to the axis P, and a clutch box so that the output shaft is parallel to the axis P (FIG. 4). 23 d includes a pipe rotation motor 23 b that can be rotated in the forward and reverse directions, and a rotational force transmission portion 23 c (FIG. 5) that transmits the rotational force of the pipe rotation motor 23 b to the second connecting pipe portion 22.

As shown in FIG. 6, the rotational force transmission portion 23 c is rotatably provided in the clutch box 23 d and is parallel to the shaft center P, and the first gear 23 c ₁ fixed to the lower end portion of the transmission shaft Pa. And an arc-shaped second gear 23c ₂ provided on the outer peripheral surface of the second connecting pipe portion 22 so as to mesh with the first gear 23c ₁ .

As shown in FIG. 5, the clutch box 23d includes an encoder 23d ₁ connected to the output shaft of the pipe rotation motor 23b, and an electromagnetic clutch 23d removably connected to the transmission shaft Pa of the rotation shaft of the encoder 23d _{1. 2} and built-in.

According to the rotation drive unit 23 configured as described above, the rotational force of the output shaft of the pipe rotation motor 23b is generated by the encoder 23d ₁ , the electromagnetic clutch 23d ₂ , the transmission shaft Pa, the first gear 23c _1, and the second gear. 23c ₂ is transmitted to the second connecting pipe portion 22 so that the second connecting pipe portion 22 rotates in the forward and reverse directions around the axis P (FIG. 5) with respect to the first connecting pipe portion 21. Can do.

When the encoder 23d ₁ detects the rotation of the pipe rotation motor 23b and inputs it to the control unit 15 (FIG. 9), which will be described later, the control unit 15 adds up the number of rotations of the pipe rotation motor 23b and the second connecting pipe unit 22 is added. The amount of rotation is detected.

As will be described in detail later, when the vacuum cleaner 100 is stopped, the electromagnetic clutch 23d ₂ opens the connection between the output shaft of the pipe rotation motor 23b and the transmission shaft Pa of the first gear 23c ₁ and the first connection pipe. The second connecting pipe portion 22 can be freely rotated with respect to the portion 21.

<Pipe rotation operation unit and operation direction detection unit>
FIG. 7 is a longitudinal sectional view of a main part showing the handle / pipe turning operation part shown in FIG.

The pipe rotation operation unit 13 composed of the handle 11b is rotatably provided above the housing 11a of the driving device 11 of the cleaner body 10, and is on the same axis C as shown in FIG. A pair of shaft portions 11b ₁ and 11b ₂ are provided at the front and rear ends. When the user holds the handle 11b and rotates left or right within a predetermined range about the axis C, the second connecting pipe portion 22 of the pipe rotating device 13 is moved to the left as will be described later. Or it will be rotated to the right.

FIG operation direction detecting unit 14 shown in 7, includes a sensor 14c for detecting the rotational direction of the connected handle 11b with a gear mechanism to the shaft portion 11b ₂ of the rear end portion of the handle 11b (e.g., an encoder), The detection signal is configured to be output to a control unit 15 (FIG. 9) described later.

As shown in FIG. 7, the operation direction detection unit 14 is built in a portion protruding rearward at the lower end of the rear portion of the housing 11a, and the gear mechanism that connects the shaft portion 11b ₂ to the sensor 14c includes a left or right handle 11b. A stopper for limiting the rotation angle to a predetermined range is provided.
Note that the handle 11b is configured to return to the original intermediate position (home position) by a biasing force of a spring (not shown) when the gripping hand force is weakened.

<Configuration of suction port>
FIG. 8 is a longitudinal sectional view of a suction port body in the electric vacuum cleaner according to the first embodiment.
As shown in FIGS. 1 to 3 and FIG. 8, the suction port body 40 includes a suction port body 41 having a bottom surface provided with a suction port 41 a ₁ elongated in the left-right direction (the arrow x direction in FIG. 1), A connection pipe portion 42 connected to the rear portion of the mouth body 41 so as to be swingable about a left-right axis Q ₁ and to be rotatable about a front-rear direction (arrow y direction in FIG. 1); A rotary brush 43 provided in the suction port 41a ₁ of the main body 41 so as to be rotatable about a left-right axis Q ₂ , a rotary brush motor 43a (FIG. 9) for rotating the rotary brush 43, and the suction port main body 41 comprising a driving roller unit 45 having a drive roller 45a and the driving roller motor 45b rotates the axis Q ₃ about a lateral direction provided in the bottom side, and a rear roller 49.

The connection pipe part 42 has a main body part 42a having an open end part 42a ₁ connected to the other end part 30b (FIG. 2) of the extension pipe 30, and a connection shaft part connected to the end part on the base side of the main body part 42a. 42b.
The outer peripheral surface of the connecting shaft portion 42b has a convex spherical portion 42c _1, whereas the suction port main body 41 has a concave spherical surface portion 42b ₁ which receives the convex spherical portion 42c _1, whereby the main body portion 42a is swingably supported by the front-rear direction around the axis to Q ₁ the left-right direction.

The front end portion of the connecting shaft portion 42b is formed in a cylindrical shape centering on the axial center in the front-rear direction (the direction of the arrow y in FIG. 1), and the cylindrical end portion of the connecting shaft portion 42b is in the suction port body 41. These ribs are rotatably held around an axial center in the front-rear direction.
Accordingly, the main body portion 42a of the connecting pipe portion 42 is swingable about the right and left direction axis Q _1, and is turnable about the longitudinal axis.

<Control system configuration>
FIG. 9 is an electric circuit diagram showing a control system (control circuit) of the electric vacuum cleaner 100 shown in FIG.
As shown in the figure, this control circuit includes a control unit 15 having a microcomputer comprising a battery 17, a CPU 51, a ROM 52, and a RAM 53, an operation unit 11c for inputting an operation signal such as start / stop to the control unit 15, A motor driver circuit 57 for driving the pipe rotation motor 23b, a motor driver circuit 59 for driving the rotating brush motor 43a and the driving roller motor 45b, and a fan motor 70 incorporated in the electric blower 31. motor driver circuit 92, the clutch driver circuit 56 for driving the electromagnetic clutch 23d _2, a power switch 62 for supplying the entire control circuit power from the battery 17, sensor 14c (FIG. 7) and the encoder 23d ₁ (FIG. 5) A sensor unit 67 including The control unit 66 is configured.

Therefore, when electric power is supplied from the battery 17 to the motor driver circuits 57, 59, and 92, the clutch driver circuit 56, the control unit 15, the operation unit 11c, and the sensor control unit 66, the control unit 15 In response to the operation signal S0 from 11c and the output signal S5 from the sensor unit 67, control signals S1, S2, and S3 are output to the motor driver circuits 92, 57, and 59, respectively, and the control signal S4 is output to the clutch driver circuit 56. The fan motor 70, the pipe rotating motor 23b, the rotating brush motor 43a, the driving coroller motor 45b, and the electromagnetic clutch 23d ₂ are respectively controlled.

  FIG. 10 is a top view of the operation unit 11c provided on the handle 11b (FIG. 1). As shown in the figure, the operation unit 11c is provided with a start / stop switch 63 and a power switch 62 (FIG. 9).

<Operation of vacuum cleaner>
When the vacuum cleaner 100 configured as described above is installed on the floor surface independently as shown in FIGS. 1 and 3, the user grasps the handle 11 b from the rear of the vacuum cleaner 100 and main body of the vacuum cleaner. When 10 is pulled to the front, the extension pipe 30 is tilted backward at an angle corresponding to the height of the user, for example, about 20 to 40 degrees.

Therefore, when the user pushes the power switch 62 of the operation unit 11c (FIG. 10) to turn it on and pushes the start / stop switch 63 to “start”, the electromagnetic clutch 23d ₂ is actuated (ON) and the pipe turning motor 23b. The rotational force of ₁ can be transmitted to the second connecting pipe portion 22.

  At the same time, the drive roller motor 43a, the blower motor 70, and the rotary brush motor 43a start driving. As a result, the suction port body 40 automatically starts moving forward, and the rotary brush 43 and the electric blower 31 are driven to start the cleaning operation.

As shown in FIG. 3, the dust on the floor is collected by the rotation of the rotating brush 43, and is sucked into the dust cup unit 12 from the suction port 41 a ₁ through the suction passage 16, the extension pipe 30, and the passage 39 together with air. Is done.

  On the other hand, the dust collected by the dust cup unit 12 falls due to gravity and is collected at the bottom of the dust cup unit 12. When the accumulated amount reaches an allowable limit, the operator removes the dust cup unit 12 from the cleaner body 10 and discards the accumulated dust.

  The air containing the dust sucked into the dust cup unit 12 is filtered by the internal dust collecting filter, and only clean air passes through the flow path 32 and is discharged from the electric blower 31 to the outside through the exhaust port 33.

<Swivel action of suction port>
Next, a method for changing the direction of the suction port body 40 during the cleaning operation will be described.
11A and 11B are diagrams for explaining a state in which the direction of the suction port body 40 in the electric vacuum cleaner 100 shown in FIG. 1 is changed. FIG. 11A shows a left-facing state and FIG. 11B shows a right-facing state.

  As shown in FIG. 1, in the vacuum cleaner 100, the handle 11 b normally has the operation portion 11 c at the left and right intermediate position (home position), and the extension pipe 30 and the suction port body 40 are also positions facing the front (y direction) ( Home position).

When it is desired to turn the suction port body 40 to the left during the cleaning operation, as shown in FIG. 11 (A), the user lightly moves the handle 11b, which is the pipe turning operation unit 13, to the left (arrow A ₁ ). Twist and rotate. Thereby, as shown in FIG. 7, the sensor 14c of the operation direction detection unit 14 detects the counterclockwise rotation direction of the handle 11b, and outputs the detection signal as a signal S5 to the control unit 15 (FIG. 9).

The control unit 15 rotates the output shaft of the motor 23b of the pipe rotation device 20 in one direction based on the detection signal from the sensor 14c, and thereby the first and second gears 23c ₁ and 23c ₂ of the rotational force transmission unit 23c. And the second connecting pipe portion 22 starts to rotate in the left (arrow B ₁ ) direction.

At the same time, the encoder 23d ₁ detects the rotation of the pipe rotation motor 23b, and the detection signal is input to the control unit 15 as a signal S5. The control unit 15 integrates the rotation speed of the pipe rotation motor 23b, and stops the pipe rotation motor 23b when the integrated rotation speed reaches a predetermined value.
Thereby, the 2nd connecting pipe part 22 rotates only a predetermined angle (for example, 90 degree | times) to the left.

As shown in FIG. 11 (A), the second connection pipe portion 22 of the pipe turning device 20 is turned in the left (arrow B ₁ ) direction, so that the connection pipe of the suction port body 40 through the extension pipe 30. The turning force in the left (arrow B ₁ ) direction is also transmitted to the main body portion 42 a and the connecting shaft portion 42 b of the portion 42.

As a result, the main body portion 42a rotates to the left (arrow B ₁ ), but a force twisted to the left acts on the connecting shaft portion 42b to change the direction to the left (arrow C ₁ ) together with the suction port main body 41. To move. As a result, the suction port body 40 turns to the left (arrow C ₁ ). At this time, the suction port body 40 is in the process of being driven by the drive roller 45a, and therefore can smoothly turn left.

When it is desired to turn the suction port body 40 to the right, as shown in FIG. 11B, the user turns the handle 11b, which is the pipe turning operation unit 13, lightly to the right (arrow A ₂ ). If it is turned, the pipe turning device 20 is operated in the opposite direction to the case of turning to the left, and the second connecting pipe portion 22 is turned to the right (arrow B ₂ ).

Accordingly, the main body portion 42a of the connection pipe portion 42 of the suction port body 40 together with the extension pipe 30 also rotates to the right (arrow B ₂ ), but the connection shaft portion 42b is acted upon by a force twisted to the right. It moves so as to change the direction to the right (arrow C ₂ ) together with the mouth body 41. As a result, the suction port body 40 turns to the right (arrow C ₂ ). Also in this case, since the suction port body 40 is in progress, it can be smoothly turned to the right.

Note that the control unit 15 is configured such that when the handle 11b rotates to the left (arrow A ₁ ) or right (arrow A ₂ ) by a predetermined angle, for example, the handle 11b has an angle of 15 ° left or right about the axis C. The pipe rotation motor 23b is preset so as to start driving when rotated by 30 ° or 45 °, and the suction port body 40 changes its direction by about 90 ° from the front position (home position) to the left or right. It is set in advance so that the motor 23b stops at this point.

Further, when the handle 11b is rotated to the left (arrow A ₁ ) or right (arrow A ₂ ), if the hand holding the handle 11b is loosened, the handle 11b is moved to the middle position (home position) by the spring force. However, first, the electromagnetic clutch 23d ₂ is released (OFF), and the pipe rotation motor 23b and the second connecting pipe portion 22 are disconnected. Since the electromagnetic clutch 23d ₂ is in the released (OFF) state, the rotational force of the pipe turning motor 23b is not transmitted to the extension pipe 30, and the suction port body 40 is maintained in a state of turning left or right. Therefore, even if the suction port body 40 is stationary on the floor surface, a torsional reaction force that attempts to return the suction port body 40 to the home position by the rotational force of the pipe rotation motor 23b is applied to the cleaner body 10. Therefore, the user's hand holding the handle 11b is not twisted and given an impact due to the reaction force.

  Thus, according to the vacuum cleaner 100, the pipe rotating device 20 automatically moves the suction port body 40 in conjunction with it by lightly twisting the handle 11b, which is the pipe rotating operation unit 13, to the left or right. Can be turned left or right. Therefore, the cleaner body 10 is not greatly shaken, and the user can greatly reduce the load on the arm by the assist function of the pipe turning device 20.

When finishing the cleaning operation, the user presses the start / stop switch 63 of the operation unit 11c (FIG. 10) with the hand holding the handle 11b to “stop”. As a result, first, the electromagnetic clutch 23d ₂ is released (OFF), and the pipe rotation motor 23b and the second connecting pipe portion 22 are disconnected. Subsequently, the electric blower 31, the rotating brush 43, and the driving roller 45a are stopped.

  However, at the end of the cleaning operation, when the user stops the cleaning operation with the suction port body 40 still turning left or right, if the hand holding the rotated handle 11b is loosened, the handle 11b returns to the home position, and accordingly, the pipe rotation motor 23b rotates to return the suction port body 40 to the home position.

However, since the electromagnetic clutch 23d ₂ is in an open (OFF) state, the rotational force of the pipe turning motor 23b is not transmitted to the extension pipe 30, and the suction port body 40 is maintained in a state of turning left or right. .

  Therefore, even if the suction port body 40 is stationary on the floor surface, a torsional reaction force that attempts to return the suction port body 40 to the home position by the rotational force of the pipe rotation motor 23b is applied to the cleaner body 10. Therefore, the user's hand holding the handle 11b is not twisted and given an impact due to the reaction force.

And the control part 15 will stop the pipe rotation motor 23b, if the rotation speed required for the pipe rotation motor 23b to return the suction inlet 40 to a home position will rotate.
Therefore, the user presses the power switch 62 of the operation unit 11c (FIG. 10) to turn it OFF, returns the vacuum cleaner 100 to the posture shown in FIGS. 1 and 3, and makes it stand on the floor surface F again, thereby completing the cleaning operation. .

(Embodiment 2)
FIG. 12 is a diagram corresponding to FIG. 1 of the second embodiment of the present invention, and FIG. 13 is a diagram corresponding to FIG. 9 of the second embodiment of the present invention. In this embodiment, the connection position of the pipe turning device 20 shown in FIGS. 1 and 2 in Embodiment 1 is moved from one end 30a to the other end 30b of the extension pipe 30, and the sensor 14c shown in FIG. 7 is removed. 9 and 10 are replaced with the operation unit 11d shown in FIGS. 13 and 14, respectively.

  In addition to the same power switch 62 and start / stop switch 63 as in the first embodiment, the operation unit 11d shown in FIG. 14 is provided with a push button switch 61L for turning left and a push button switch 61R for turning right. Yes.

  In this embodiment, the control unit 15 (FIG. 13) starts driving the pipe rotation motor 23b when the push button switch 61L or 61R is pressed for a predetermined time (for example, 1 second) or longer, and the push button switch 61L or 61R. Is set in advance so that the driving of the pipe rotation motor 23b is stopped when the suction port body 40 changes its direction from the front position (home position) to the left or right by a predetermined angle (for example, 90 degrees). Has been.

  In addition, when the push button switch 61L or 61R is separated from the hand, the control unit 15 operates the pipe rotation device 20 so that the suction port body 40 faces the front position. Other configurations are the same as those of the first embodiment.

  Accordingly, instead of twisting the handle 11b to the left and right as in the first embodiment, the user operates the push button switch 61L for turning left or 61R for turning right with the hand holding the handle 11b. The suction port body 40 can be turned left and right in the same manner as in the first embodiment.

(Embodiment 3)
FIG. 15 is a diagram corresponding to FIG. 13 of the third embodiment of the present invention.
In this embodiment, in order to simplify the electrical wiring between the cleaner main body 10 in FIG. 12 of the second embodiment and the pipe rotation device 20 and the suction port body 40, as shown in FIG. 10 and the pipe rotation device 20 and the suction port body 40 are provided with power line communication units P1 and P2, respectively.

  Here, as the power line communication units P1 and P2, a PLC-type power line communication device that transmits and receives communication signals by superimposing communication signals on the power lines is used.

  In this embodiment, as shown in FIG. 15, the battery 17, the power switch 62, the motor driver circuit 92, the blower motor 70, the control unit 15, the operation unit 11 d, and the power line communication unit P <b> 1 are vacuum cleaners. Provided in the main body 10.

Further, the motor driver circuit 57, 59, a sensor control unit 66, the clutch driver circuit 56, a pipe rotating motor 23b, a motor 43a for rotating brush, a drive roller motor 45b, an electromagnetic clutch 23d _2, sensor The part 67 is provided in at least one of the pipe turning device 20 and the suction port body 40.

  And the vacuum cleaner main body 10 and at least one of the pipe rotation apparatus 20 and the suction inlet body 40 are electrically connected only by two power line W1, W2 via power line communication part P1, P2. The two power lines W1 and W2 are installed along the inside or the outside of the extension pipe 30.

  The power line communication units P1, P2 supply the output power of the battery 17 to the motor driver circuits 57, 59, the sensor control unit 66, and the clutch driver circuit 56 via the two power lines W1, W2. In addition, the control signals S2, S3, S4 are transmitted from the control unit 15 to the motor driver circuits 57, 59 and the clutch driver circuit 56, and the output signal S5 of the sensor unit 67 is transmitted to the control unit 15. Other configurations are the same as those of the second embodiment.

10 the cleaner body, 10a inlet, 11 drive, 11a housing, 11b handle, 11b _1, 11b ₂ shank, 11c, 11d operation unit, 12 dust cup unit, 13 a pipe rotating operation unit, 14 operation direction detection Part, 14c sensor, 15 control part, 16 suction flow path, 17 battery, 20 pipe rotating device, 21 first connecting pipe part, 21a, 22a open end part 21b coupling end part, 21c locking recess, 22 second connection Tube part, 22b Connection other end part, 22c Lock part, 23 Rotation drive part, 23b Pipe rotation motor, 23c Rotational force transmission part, 23c ₁ 1st gear, 23c ₂ 2nd gear, 23d Clutch box, 23d ₁ encoder , 23d ₂ electromagnetic clutch, 30 extension pipe, 30a one end, 30b other end, 31 electric blower, 32, 39 flow path, 33 exhaust port, 40 suction port body, 41 Suction port body, 41a Suction port, 42 Connection pipe section, 42a Body section, 42a ₁ open end section, 42a ₂ convex spherical section, 42b Connection shaft section, 43 Rotating brush, 43a Rotating brush motor, 45a Drive roller, 45b Motor for driving roller, 56 Clutch driver circuit, 57, 59, 92 Motor driver circuit, 61L, 61R Push button switch, 62 Power switch, 63 Start / stop switch, 66 Sensor control unit, 67 Sensor unit, 70 Blower motor, 100 Vacuum cleaner, C, Q ₁ , Q ₂ , Q ₃ axis, F floor, P1, P2 power line communication unit, W1, W2 power line

Claims (4)

  A suction port body having a dust suction port, a vacuum cleaner body having a dust collecting device, an extension pipe connecting the suction port body and the vacuum cleaner body, and a vacuum cleaner body interposed between the vacuum cleaner body and the extension pipe A rotation device that is fixed to the extension pipe and rotates the suction port body via the extension pipe, or is interposed between the extension pipe and the suction port body and is fixed to the extension pipe and rotates the suction port body. The moving device includes a motor and an electromagnetic clutch, and transmits the rotational force of the motor to the suction port body via the electromagnetic clutch, thereby rotating the suction port body.   The motor further includes a driver circuit for driving the motor and the electromagnetic clutch, and a control unit for controlling the driver circuit. The control unit transmits the rotational force of the motor to the suction port during cleaning work, and stops the motor when the cleaning work is stopped. The electric vacuum cleaner according to claim 1, wherein the electromagnetic clutch is driven by the driver circuit so that the rotational force is not transmitted to the suction port body.   The control unit further includes an operation unit for inputting an operation signal, and the control unit receives the operation signal from the operation unit and causes the driver circuit to control the rotation direction of the motor, thereby determining the turning direction of the suction port body. The vacuum cleaner according to claim 2.   The rotating device is interposed between the extension pipe and the suction port body, and the cleaner body includes the control unit and the operating unit, a power source, and a first power line communication unit, and the rotating device and the suction unit At least one of the mouth bodies includes the driver circuit and the second power line communication unit, the first power line communication unit and the second power line communication unit are connected by two power lines, and power from the power source to the driver circuit The vacuum cleaner according to claim 3, wherein transmission of a signal from the control unit to the driver circuit is performed via the two power lines.

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