JP2014217641A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner which completely blocks a path via a nozzle body and can improve a suction force of the flow path via an extension tube when cleaning a gap or the like.SOLUTION: When a handle unit is inserted in a vacuum cleaner body, a space between the handle unit and the cleaner body is sealed, and a flow path via an extension tube is closed airtightly. At the same time, a distal end part of the extension tube pushes a communication mechanism, rotates a rotary valve, and opens a flow path via a nozzle. On the contrary, when the handle unit is withdrawn from the cleaner body, the rotary valve rotates by a force of a reduction spring, the flow path via the nozzle is blocked, and the flow path via the extension tube is opened.

Description

  The present invention relates to a vacuum cleaner such as an upright type vacuum cleaner in which a suction nozzle body is connected to a lower end of a vacuum cleaner body and a detachable handle unit is mounted on the upper end of the vacuum cleaner body.

  The upright type vacuum cleaner has a built-in electric blower that generates suction air and a dust collecting part that collects dust sucked by the suction air generated by the electric blower, and a suction nozzle body at the lower end of the vacuum cleaner body. Is connected, the handle unit is attached to the upper end of the vacuum cleaner body, and by operating the hand handle provided on this handle unit, the suction nozzle body is moved along with the vacuum cleaner body along the floor surface. Can be cleaned.

  In such an upright type vacuum cleaner, a handle unit attached to the upper end of the vacuum cleaner main body is detachable from the vacuum cleaner main body in order to cope with cleaning other than the floor surface such as a gap.

  In order to realize this detachability, it is common that an attachment / detachment button for attaching the handle unit is provided in the vicinity of the handle unit mounting location on the upper surface of the cleaner body.

  When cleaning the floor surface, the flow path of the suction nozzle body is used. On the other hand, when cleaning the gap, the flow path via the extension pipe is used. Therefore, a structure for switching the two flow paths is necessary.

  When the handle unit is attached to the main body of the vacuum cleaner, the tip of the handle unit and the storage part of the main body are sealed, and only the flow path of the suction nozzle body is opened. When cleaning is performed, first, the angle between the suction nozzle body and the cleaner body is made vertical, whereby the flow path through the suction nozzle body is blocked.

  It is a general structure that the handle unit is pulled out from the main body and the flow path via the extension pipe is opened.

  In addition, a flow path switching valve with a hose is provided at the rear of the main body, and when the handle unit is inserted into the cleaner body, the flow path through the suction nozzle body is opened, and when the handle unit is pulled out from the cleaner body, A structure in which the flow path via the extension pipe is opened has also been proposed. (For example, refer to Patent Document 1).

International Publication No. 00/21425

  In the conventional upright type vacuum cleaner, when cleaning other than the floor surface such as a gap, first, it is necessary to make the main body of the cleaner vertical. Thereby, the dust collection passage passing through the suction nozzle body is blocked. Next, the handle unit is pulled out from the cleaner body while pushing the attaching / detaching mechanism for releasing the lock between the handle unit and the cleaner body, and the flow path via the extension pipe is opened.

  However, if the dust collection passage that passes through the suction nozzle body is completely blocked, the temperature rise of the main body becomes a problem when the main body is operated, or the handle unit is strongly sucked while the main body is operated, and is difficult to pull out. Therefore, since the flow path via the suction nozzle body is partially blocked, there arises a problem that the suction force of the flow path via the extension pipe is reduced.

  On the other hand, for the mechanism as in the above-mentioned patent document, when the handle unit is pulled out from the main body of the vacuum cleaner, the flow path is automatically converted to the flow path via the extension pipe, and there is a problem with the conventional vacuum cleaner. The problem that can be solved is that the structure for realizing this flow path change is large, and the influence on the design and configuration of the main body of the cleaner is large.

  Therefore, the present invention can realize that the flow path through the nozzle body is completely blocked when cleaning the gap and the like, and the suction force of the flow path through the extension pipe can be improved, and the flow path through the extension pipe The valve structure that realizes the switching of the flow path through the nozzle body is small, and it is possible to provide a vacuum cleaner that can reduce the influence on the design and configuration of the vacuum cleaner body, for example, an upright vacuum cleaner Objective.

  In order to achieve the above object, the present invention provides an electric vacuum cleaner body having an electric blower for generating suction air and a dust collecting part for collecting dust sucked by the suction air generated by the electric blower. A suction nozzle body connected to the lower end of the main body of the vacuum cleaner, a hose having one end connected to the main body of the vacuum cleaner, and the other end of the hose so as to be detachable from the main body of the vacuum cleaner A handle unit to be attached and provided in the main body of the vacuum cleaner, and when the handle unit is attached to the main body of the vacuum cleaner, the handle unit is engaged with the main body of the vacuum cleaner. A lock part to be held; a rotary valve provided in the main body of the vacuum cleaner, for switching between the flow path via the suction nozzle body and the flow path via the extension pipe; and the extension A transmission mechanism is provided to transmit the operation to the rotary valve, and when the handle unit is inserted into the electric vacuum cleaner main body, the handle unit and the vacuum cleaner main body are sealed to each other via the extension pipe. The flow path is sealed.

  At the same time, the distal end of the extension pipe pushes the transmission mechanism, rotates the rotary valve, and the flow path via the nozzle is opened.

  Conversely, when the handle unit is pulled out from the main body of the vacuum cleaner, the rotary valve is rotated by the pulling force of the return spring provided in the transmission mechanism, the flow path via the nozzle is blocked, The flow path becomes open.

  Since the rotary valve has an airtight structure, there is no loss of suction force from the nozzle body when using the flow path via the extension tube, and the suction force via the extension tube can be maximized. Is.

  According to the present invention, when the passage other than the floor surface such as a gap is cleaned using the flow path via the extension pipe, there is no loss in the flow path via the extension pipe, and the suction force can be maximized. It can be expected to improve the cleaning efficiency. The handle unit is automatically attached to and removed from the main body of the cleaner, so that the switching of the flow path is automatically realized, and the usability can be improved. Moreover, since the structure of the rotary valve of this invention is small, the influence on the design and structure of a cleaner main body can be reduced.

The schematic block diagram of the vacuum cleaner in embodiment of this invention. The right sectional view of the electric vacuum cleaner in the embodiment of the present invention. The right sectional view of the main part which shows the channel of the vacuum cleaner in the embodiment of the present invention. The perspective view which shows the dust collection part of the vacuum cleaner in embodiment of this invention. The back sectional view showing the channel via the nozzle of the vacuum cleaner in the embodiment of the present invention. The back sectional view showing the channel via the extension pipe of the vacuum cleaner in the embodiment of the present invention.

  A first aspect of the present invention is an electric vacuum cleaner main body having an electric blower that generates suction air, and a dust collecting part that collects dust sucked by the suction air generated by the electric blower, and the electric vacuum cleaner A suction nozzle body connected to the lower end of the main body, a hose with one end connected to the main body of the vacuum cleaner, a handle unit attached to the other end of the hose and detachably attached to the main body of the vacuum cleaner; A lock portion that is provided in the vacuum cleaner body, engages with the handle unit when the handle unit is attached to the vacuum cleaner body, and holds the handle unit in the vacuum cleaner body; A rotary valve provided in the vacuum cleaner main body, and capable of switching between a flow path via a suction nozzle body and a flow path via an extension pipe; and the handle unit An extension pipe that detects the position of the extension pipe and transmits a force to the rotary valve, and when the handle unit is attached to the main body of the vacuum cleaner, the tip of the extension pipe is When the transmission mechanism is pushed, the rotary valve is rotated, the flow path via the nozzle is opened, and when the handle unit is pulled out from the main body of the vacuum cleaner, the rotary valve is a return spring provided in the transmission mechanism. It is rotated by the action, and the flow path via the extension pipe is opened.

  According to the present invention, when cleaning other than the floor surface such as a gap, when the extension pipe is pulled out from the cleaner body, the flow path passing through the suction nozzle body is automatically blocked by the action of the rotary valve. Unlike the conventional vacuum cleaner, it is not necessary to maintain the angle between the main body and the suction nozzle body vertically, and the usability can be improved.

  According to a second aspect of the present invention, in particular, in the vacuum cleaner of the first aspect, the rotary valve that realizes conversion between the flow path via the nozzle body and the flow path via the extension pipe has an airtight structure. When using the flow path to clean the space other than the floor, such as gaps, air from the flow path via the nozzle body does not leak, and the suction force of the flow path via the extension pipe can be maximized, which improves the cleaning efficiency. It can be expected to improve.

  According to a third aspect of the present invention, in the electric vacuum cleaner according to the first or second aspect, the flow path in the rotary valve is configured to form a predetermined angle, and the predetermined angle is used to connect the handle unit to the vacuum cleaner. When inserted into the main body, the nozzle body and the dust collecting part can be connected, and when the handle unit is pulled out from the cleaner body, the extension pipe and the dust collecting part can be connected.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
(Embodiment 1)
First, a schematic structure of an upright type vacuum cleaner according to this embodiment will be described with reference to FIGS.

  FIG. 1 is a perspective view showing an upright type vacuum cleaner 1.

The upright type vacuum cleaner 1 includes an electric blower 110 that generates suction air, a dust collecting chamber 120 that collects dust sucked by the suction air, and a vacuum cleaner body 100. A nozzle body 200 connected to the lower end; a hose 130 having one end connected to the cleaner body 100; and a handle unit 300 attached to the other end of the hose 130 and detachably attached to the cleaner body 100. Configured.

  The vacuum cleaner main body 100 and the nozzle body 200 can be rotated through a joint 210 at a certain angle.

  The handle unit 300 includes an extension pipe 310 and a hand handle 320, and the extension pipe 310 has a first pipe 311 fixed to the hand handle 320 and a second pipe slidable in the first pipe. And a pipe 312.

  The first pipe 311 is provided with a recess 311 a, the holder 140 is fixed to the cleaner main body 100, and the seal packing 141 is attached to the holder 140, and is in a contact portion between the holder 140 and the tip of the second pipe 312. When the handle unit 300 is mounted on the vacuum cleaner body 100, the flow path through the extension pipe 310 is blocked by the seal packing 141, and the first pipe 311 slides in the holder 140 along the Y1-Y2 direction. The lock part 150 can slide along the X1-X2 direction in the hole part of the holder 140.

  When the handle unit 300 is attached to the cleaner body 100, the tip of the first pipe 311 is in contact with the holder 140, and the first pipe 311 and the lock part 150 are engaged by the recess 311a.

  Thereby, the handle unit 300 is fixed to the cleaner body 100, and the user can hold the grip portion 321 of the hand handle and operate the upright type vacuum cleaner 1 to perform floor cleaning.

  Inside the vacuum cleaner main body 100, there are provided a rotary valve 500 for switching a flow path through the nozzle body 200 and a flow path through the extension pipe 310, and a transmission mechanism 600 for transmitting the force of the extension pipe 310 to the rotary valve 500. Since the second pipe 312 is configured to be slidable in the first pipe 311, the second pipe 312 can be used for cleaning in various situations by pulling the second pipe 312 out of the first pipe 311.

  As described above, in the upright type vacuum cleaner 1 according to this embodiment, the handle unit 300 is attached to the cleaner body 100 when the floor surface is cleaned, and the user holds the grip portion 321 of the hand handle 320. Floor cleaning.

  On the other hand, when cleaning a place other than the floor surface such as a gap, the handle unit 300 can be removed from the cleaner main body 100 and then cleaned using the tip suction port of the extension pipe 310.

  Next, the flow path will be described with reference to FIGS.

  The air P1 mixed with dust sucked from the suction port 200a of the nozzle body 200 passes through the joint 210 and reaches the junction 100c. Similarly, the dust-mixed air P2 sucked from the extension pipe suction port 312a of the extension pipe 310 passes through the hose 130 and reaches the junction 100c.

  The junction 100c and the air inlet 120b of the dust collecting chamber 120 communicate with each other, and the dust is separated into dust and air by the mesh filter 121 and the pleat filter 122.

  The air inlet 120b of the dust collection chamber 120 and the electric blower 110 are communicated with each other by an air passage 100d formed substantially from the upper rear end of the vacuum cleaner body 100 to the lower side and separated by the dust collection chamber 120. The clean air P3 is sucked into the electric blower 110.

The exhaust air P4 discharged from the electric blower 110 is the vacuum cleaner main body 100.
Is exhausted to the outside through the exhaust grid 1e formed at the rear of the.

  Next, the operation of the rotary valve during floor cleaning will be described with reference to FIG.

  At this time, the handle unit 300 is inserted into the cleaner main body 100, and the pressing force from the tip of the second pipe 312 is a rotary valve via the first connecting portion 620 and the second connecting portion 630 of the transmission mechanism 600. 500, the bent pipe opening a of the bent pipe 510 of the rotary valve 500 is connected to the flow path from the nozzle, and the opposite bent pipe opening b is connected to the dust collecting chamber suction port 120a of the dust collecting chamber 120, The dust-mixed air P1 sucked from the suction port 200a of the nozzle body 200 passes through the bent pipe 510, the mesh filter 121, and the pleat filter 122, and the separated clean air P3 is sucked into the electric blower 110.

  Next, with reference to FIG. 6, the operation of the rotary valve when cleaning a portion other than the floor surface such as a gap using the flow path via the extension pipe will be described.

  Since the handle unit 300 is pulled out from the cleaner body 100, the first connecting portion 620 of the transmission mechanism 600 moves upward by receiving the force of the return spring 610. This movement causes the rotary valve 500 to rotate by a predetermined angle in the V direction via the second connecting portion 630.

  As a result, the bent pipe opening a of the rotary valve 500 is connected to the dust collection chamber suction port 120a of the dust collection chamber 120, the bent pipe opening b500b is connected to the extension pipe 310 via the hose 130, and from the tip of the extension pipe 310. The sucked air P1 mixed with dust passes through the bent pipe 510, the mesh filter 121 and the pleat filter 122, and the separated clean air P3 is sucked into the electric blower 110.

  As described above, the vacuum cleaner according to the present invention uses the flow path via the extension pipe, and when performing cleaning other than the floor surface such as a gap, the flow path via the extension pipe has no loss and suction. It can be expected to improve cleaning efficiency because it can maximize its power. Then, by attaching / detaching the handle unit to / from the vacuum cleaner body, the flow path is automatically switched, and the usability can be improved. Moreover, since the structure of the rotary valve of this invention is small, the influence on the design and structure of a vacuum cleaner main body can be reduced, and it can apply to various upright type vacuum cleaners.

DESCRIPTION OF SYMBOLS 1 ... Upright type vacuum cleaner 100 ... Vacuum cleaner main body 110 ... Electric blower 120 ... Dust collection chamber 120a ... Dust collection chamber suction port 130 ... Hose 140 ... Holder 150 ... Lock part 200 ... Nozzle body 200a ... Suction port 210 ... Joint DESCRIPTION OF SYMBOLS 300 ... Handle unit 310 ... Extension pipe 311 ... 1st pipe 311a ... Recessed part 312 ... 2nd pipe 312a ... Extension pipe suction port 320 ... Hand handle 500 ... Rotary valve 510 ... Bending pipe 600 ... Transmission mechanism 610 ... Return spring 620 ... First 1 connection part 630 ... 2nd connection part 100c ... merge part 1e ... exhaust lattice

Claims (3)

An electric blower main body having an electric blower for generating suction air, and a dust collecting part for collecting dust sucked by the suction air generated by the electric blower,
A suction nozzle body connected to the lower end of the vacuum cleaner body;
A hose with one end connected to the vacuum cleaner body;
A handle unit attached to the other end of the hose and detachably attached to the main body of the vacuum cleaner,
A lock portion that is provided in the vacuum cleaner body, engages with the handle unit when the handle unit is attached to the vacuum cleaner body, and holds the handle unit in the vacuum cleaner body;
A rotary valve provided in the main body of the vacuum cleaner, which enables switching between a flow path via the suction nozzle body and a flow path via the extension pipe, an extension pipe belonging to the handle unit, and an extension pipe A transmission mechanism that detects the position and transmits force to the rotary valve;
When the handle unit is attached to the main body of the vacuum cleaner, the tip of the extension pipe pushes the transmission mechanism, rotates the rotary valve, opens the flow path via the nozzle, and the handle unit is A vacuum cleaner characterized in that, when pulled out from the machine body, the rotary valve is rotated by the action of a return spring provided in the transmission mechanism, and the flow path via the extension pipe is opened.   The electric vacuum cleaner according to claim 1, wherein the rotary valve that realizes conversion between the flow path via the nozzle body and the flow path via the extension pipe has an airtight structure.   The flow path in the rotary valve is configured to form a predetermined angle, and when the handle unit is inserted into the cleaner body, the predetermined angle connects the nozzle body and the dust collecting unit, and The vacuum cleaner according to claim 1 or 2, wherein when the handle unit is pulled out from the main body of the vacuum cleaner, the extension pipe and the dust collecting portion can be connected.

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