JPH0560454U - Vacuum cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the risk of the brush scratching the pickup lens. A cleaning operation of a pickup lens 2 by a brush 1 is performed in a state where an upward driving force F is applied to the pickup lens 2 by energizing a focusing 7. The pickup lens 2 is cleaned, for example, at a neutral position where the upward driving force F and the pressing force P from the brush 1 are balanced. The pickup lens 2 has a margin to escape from an overload from the brush 1, and there is no risk of damaging the lens.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vacuum cleaner having a plurality of air passages, and more particularly to an air passage switching device.

[0002]

[Prior Art]

 Conventionally, some vacuum cleaners have a circulation type air duct structure using the exhaust heat of the motor as shown in FIG. 5 in order to kill the wall flies that have been sucked together with the dust on the carpet or tatami mat.

In a vacuum cleaner having such a circulation type air passage structure, it is necessary to switch the air passage between the case of performing normal cleaning and the case of performing wall eradication. Conventionally, this change is shown in FIGS. 6a and 6b. The configuration was as shown.

6A and 6B are cross-sectional views of the hose connection portion 51 of the cleaner body 50. The hose connecting portion 51 is connected to a suction air passage pipe 53 connected to the dust pack 52 and an exhaust air passage pipe 55 connected to an air exhaust portion of the motor 54. Further, the hose connecting portion 51 is provided with a lid 56 that can slide in the arrow direction.

When performing normal cleaning, the lid 56 is slid and opened as shown in FIG. 6A, the hose 57 is inserted into the hose connecting portion 51 to connect the hose 57 and the suction air duct tube 53, and The exhaust air duct tube 51 is closed.

Further, when performing wall eradication, as shown in FIG. 6b, the lid 56 is closed, the exhaust air passage tube 55 and the suction air passage tube 53 are connected, and the exhaust heat of the motor 54 is circulated in the air passage. The wall flies in the garbage pack 52 are killed.

[0007]

As described above, in the conventional vacuum cleaner, in order to switch the air passage, it is necessary to attach / detach the hose and further open / close the lid, which is troublesome.

Further, if such an air passage switching mechanism is adopted in an automatic cleaner that automatically cleans by self-propelled, a human must operate every time the air passage is switched, which is an advantage of the automatic cleaner. There was a problem of disappearing.

In order to solve such a problem, an object of the present invention is to provide a cleaner that can be easily operated or can automatically switch air passages.

[0010]

[Means for Solving the Problems]

 In order to solve such a problem, the present invention provides a vacuum cleaner having a plurality of air passages in a cleaner body and connecting the plurality of air passages at a connecting portion. The configuration includes a selection unit that selects a state and a switching unit that selectively switches the connection of the air passage based on a command from the selection unit.

Further, the selection unit includes a hose detection unit that detects attachment / detachment of the hose to / from the connection unit, a control unit that selects an air passage according to the operating condition of the sweeper, and each connection of the air passage. It may be constituted by a switch means or the like that can arbitrarily switch the signal corresponding to the state.

[0012]

[Action]

 According to the present invention, the air passage of the electric vacuum cleaner can be switched automatically or by a simple operation such as insertion / removal of the hose.

[0013]

【Example】

 An embodiment according to the present invention is shown in FIGS.

A first embodiment according to the present invention is shown in FIGS. 1A and 1B are cross-sectional views of the air duct switching unit of the electric vacuum cleaner according to the present embodiment. The configuration of other parts is the same as that of the conventional technique, and the description thereof is omitted.

A lid 1 is rotatably attached to a hose connecting portion 51 on an upper portion of a main body 50 of the electric vacuum cleaner via a shaft 2, and a torsion coil spring 3 is attached to the shaft 2 so that the lid 2 can be constantly watched. It is urging around.

In such a configuration, when the hose 57 is inserted into the hose connecting portion 51 when performing normal cleaning using the suction nozzle, the hose 57 twists the lid 1 against the biasing force of the coil spring 3 and counteracts it. The lid 1 closes the exhaust air duct 55, and the hose 57 communicates with the suction air duct 53.

In addition, when the tick is eliminated, the hose 57 is pulled out from the hose connecting portion 51, and the lid 1 is rotated clockwise by the urging force of the torsion coil spring 3 to close the hose connecting portion 51 and suck the suction air. The duct 53 and the exhaust duct 55 are communicated with each other, and the exhaust heat of the motor 54 is guided to the suction duct 53 to remove the wall flies in the dust pack 52.

As described above, according to the first embodiment of the present invention, the air passage can be switched to each of the states of suction cleaning and wall gall extermination simply by attaching and detaching the hose 57.

Next, a second embodiment according to the present invention will be described with reference to FIGS. 2a, b, c, d and FIG.

2A and 2B are cross-sectional views of the air passage switching unit of the electric vacuum cleaner according to the present embodiment. The configuration of the other parts is substantially the same as that of the conventional technique, and the description thereof is omitted.

A hose detection switch 11 is provided on the upper part of the hose connection part 51, and the contact is pushed and turned on when the hose 57 is inserted into the hose connection part 51. A first actuator 12 is provided below the hose detection switch 11 and above the exhaust air duct tube 55. Further, the second actuator 13 is provided at the connecting portion with the exhaust air duct tube 55.

As shown in FIGS. 2c, d, e, and f, the first and second actuators 12 and 13 form a shutter-shaped valve, and are arranged in the fan-shaped opening 14 and the outer periphery thereof. Further, a stator 16 having a plurality of coils 15 and a rotor 18 coaxially attached to the stator 16 and having a permanent magnet 17 at its tip are provided to form a 45 ° step PM type stepping motor.

As shown in FIG. 2c, the actuators 12 and 13 supply a current to the coil 19 of the stator 16 based on the control signal and the CPU 19b which receives the detection output of the hose detection switch 11 and outputs a control signal. It is connected to a drive circuit 19 having a driver circuit 19a.

In such a configuration, during normal cleaning, the hose 57 is inserted into the hose connection portion 51, so the hose detection switch 11 is turned on, and the CPU 19b and the driver circuit 19a receiving this detection signal cause the actuator 19 to operate. By controlling the actuators 12 and 13 so that the hole 14 of 12 is in the open state as shown in FIG. 2e and the actuator B is in the closed state as shown in FIG. 2d, the exhaust heat of the motor 54 is cut off and The suction air duct 53 is sucked as indicated by an arrow A in the figure.

In addition, when the tick is removed, by pulling out the hose 57 from the hose connection portion 51, the hose detection switch 11 is turned off, the drive circuit 19 closes the actuator 12, and the actuator 13 is turned off. By opening, the heat exhausted from the motor is circulated as indicated by arrow B in the figure.

As described above, according to the second embodiment, the air passage for normal cleaning and the air passage for exterminating the wall gaze can be switched only by inserting / removing the hose 57 into / from the hose connecting portion 51. At the same time, the air passage can be switched more reliably by using the stepping motor for switching the air passage.

Next, a third embodiment of the present invention will be described with reference to FIGS. 3a and 3b. Similar to the second embodiment, the air passage switching mechanism of this embodiment is rotatably supported by the hose detection switch 11 provided in the hose connecting portion 51 and the outlet of the discharge air passage pipe 55. A lid 21, a torsion coil spring 22 that constantly urges the lid 21 in the direction of arrow C, a motor 23 fixed to the main body 1, a male screw 24a rotated by the motor 23, and a male screw 24a. And a shaft 24 extending to the inside of the exhaust air duct tube through a hole 25 formed in the pipe surface of the exhaust air duct tube 55, the end of which is fixed to the nut portion 24b. 26, a head 27 attached to the other end of the shaft 26, and a motor control circuit 28 that receives a signal from the hose detection switch 11 and controls the motor 23.

A packing 29 for airtightness is attached to the hole 25.

In such a configuration, when performing normal cleaning, the hose detection switch 11 is turned on when the hose 57 is inserted into the hose connection portion 51 as shown in FIG. 3a, and the detection signal is received. The motor drive unit 28 rotates the motor 23 to rotate the male screw 24a. Since the motor 23 and the male screw 24a are fixed to the main body, the nut portion 24b, the shaft 26, and the head 27 move in the direction of the arrow E in the figure with the rotation of the male screw, and the head 27 moves. While closing the discharge air passage tube 55, the lid 21 is rotated counterclockwise by the biasing force of the torsion coil spring 22 so that the hose 57 and the suction air passage tube 53 communicate with each other.

Further, when the wall is removed, the hose 57 is pulled out from the hose connecting portion 51 to turn off the hose detection switch 11, and the motor control circuit 28 receiving this signal causes the motor 23 to rotate in the opposite direction to the cleaning. As a result, the nut portion 24b, the shaft 26, and the head portion 27 are moved in the direction of arrow D in the drawing, and the lid portion 21 is moved clockwise by the head portion 27 that is moved as shown in FIG. When closed, the discharge air duct tube 55 and the suction air duct tube 53 are made to communicate with each other.

As described above, according to the third embodiment, by connecting / disconnecting the hose 57 to / from the hose connecting portion 51, the air passages can be automatically switched between the normal cleaning and the wall eradication, and the discharge is performed. Since the air passage pipe 55 is closed by the head portion 27 and the lid 21, the discharge air passage pipe 55 can be closed more reliably during normal cleaning.

Although a switch is used as the hose detecting means in the second and third embodiments, other detecting means such as an optical sensor or a magnetic sensor may be used. In addition, although the PM type stepping motor is used as the actuator in the second embodiment, this may be another type of motor.

Further, in the first, second, and third embodiments, the air passage is switched in association with the insertion / removal of the hose, but instead of the hose detecting means, the main body of the vacuum cleaner or the hose is used. The switch may be provided with an air passage switch, and the air passage may be arbitrarily switched by operating this switch.

Next, a fourth embodiment according to the present invention is shown in FIG. 4. This embodiment is an example in which the present invention is applied to a self-propelled automatic cleaner, and controls the operation of the automatic cleaner 31. The control unit 38 constantly monitors the progress of the cleaning work of the automatic cleaner and outputs a switching signal according to the progress. Reference numeral 32 denotes a nozzle portion that sucks dust on the floor surface, and is connected to the switching portion 34 via a suction air duct 33.

Reference numeral 35 denotes a dust pack, the inlet of which is connected to the switching unit 34 and the outlet of which is connected to the exhaust air duct 37 through the suction motor 36. Further, the exhaust air duct 37 is connected to the switching unit 34. Since the specific configuration of the switching unit 34 may be the same as that of the second and third embodiments described above, it will be omitted.

With such a configuration, during the cleaning operation of the automatic cleaner 31, the control unit 38 outputs a switching signal to the switching unit 34 so that the suction air duct tube 33 and the dust pack 35 communicate with each other, and the nozzle unit 32. The dust sucked in is stored in the dust pack 35. Further, when the cleaning work is completed, the control unit 38 outputs a switching signal so that the exhaust air duct 37 and the dust pack 35 are communicated with each other, and the exhaust air of the suction motor 36 is discharged through the exhaust duct 37. It flows back to the pack 35 to remove the wall flies.

According to this embodiment, in the automatic cleaner, it is possible to automatically perform the wall gaze removal work after the cleaning work is completed.

[0038]

[Effect of the device]

 As described above, according to the electric vacuum cleaner of the present invention, the air passage of the electric vacuum cleaner can be switched automatically or by an easy operation such as inserting and removing the hose.

[Brief description of drawings]

1a and 1b are partial sectional views of a first embodiment according to the present invention.

2a and 2b are partial sectional views of a second embodiment according to the present invention.

FIG. 3 is a circuit diagram of a second embodiment according to the present invention.

4A and 4B are diagrams showing open / closed states of the first and second actuators.

FIG. 5 is an exploded perspective view of first and second actuators.

6a and 6b are partial sectional views of a third embodiment according to the present invention.

FIG. 7 is a perspective view of a fourth embodiment according to the present invention.

FIG. 8 is a perspective view of a vacuum cleaner according to the prior art.

9a, b are partial cross-sectional views of a vacuum cleaner according to the prior art.

[Explanation of symbols]

 1, 21 Lid 2 Shafts 3, 22 Torsion Spring 11 Hose Detection Switch 12 First Actuator 13 Second Actuator 14 Opening Portion 15 Coil 16 Stator 17 Permanent Magnet 18 Rotor 19 Drive Circuit 23 Motor 24 Ball Screw Part 26 Shaft 27 Head part 28 Motor control circuit 34 Switching part 38 Control part 51 Hose connection part 53 Suction air duct tube 55 Exhaust air duct tube 57 Hose

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[Procedure amendment]

[Submission date] February 8, 1993

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Figure 8]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 9]

Claims (7)

[Scope of utility model registration request] 1. An electric vacuum cleaner having a plurality of air passages in a cleaner body, wherein the plurality of air passages are connected by a connecting portion, and a selecting portion for selecting a connection state of the plurality of air passages, An electric vacuum cleaner comprising: switching means for selectively switching the connection of the air passages based on a command from the selection unit. 2. The electric vacuum cleaner according to claim 1, wherein the selection unit detects attachment / detachment of a hose detachably attached to the connection unit and automatically selects an air passage. 3. The vacuum cleaner according to claim 1, wherein the selection unit monitors an operation status of the vacuum cleaner and automatically selects an air passage corresponding to the operation status. 4. The electric vacuum cleaner according to claim 1, wherein the selection unit is composed of a switch means capable of arbitrarily switching a signal corresponding to each connection state of the air passage. 5. The switching means includes an actuator that is provided between the plurality of air passages and that connects and disconnects the air flow between the air passages, and an actuator that controls opening and closing of the actuator based on a signal from the selection unit. The electric vacuum cleaner according to any one of claims 1 to 4, comprising a control means. 6. The switching means includes a first lid that is rotatably supported by the connection portion and is urged in one direction by a spring, and is driven by a motor to move to open and close the first lid. 5. The electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner comprises a lid opening / closing unit that operates and a lid opening / closing driving unit that drives the lid opening / closing unit based on a signal from the selection unit. 7. A cleaner body having a plurality of air passages, a connecting portion connecting the plurality of air passages, and a cleaning hose detachably provided on the connecting portion. In the electric vacuum cleaner described above, the second lid has a second lid that is rotatably supported by the connection portion and is biased in one direction by a spring, and the second hose is inserted into the connection portion to remove the second lid. An electric vacuum cleaner characterized in that a lid closes one of the plurality of air passages.