JP2003339594A - Dust collecting apparatus and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of easily removing dust sticking to a filter. <P>SOLUTION: A cleaning plate 37 having a brush 40 brought into sliding contact with an outer filter 9 of an outer filter part 6 disposed in a dust box body 5, is mounted to the outer peripheral part of the outer filter 9. A locking protrusion part 41 is formed at the bottom face of an upper support member 38 of the cleaning plate 37, and an engaging protrusion part 5a circumferentially engaged with the locking protrusion part 41 of the cleaning plate 37 to lock the cleaning plate 37 is formed near the inner surface upper end opening of the dust box body 5. When plugging occurs to the outer filter 9, the outer filter part 6 is lifted from the dust box body 5 while rotating the outer filter part 6 to remove the dust on the outer peripheral surface of the outer filter 9 by the brush 40 of the cleaning plate 37. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone type dust box and an electric vacuum cleaner equipped with the cyclone type dust box.

[0002]

2. Description of the Related Art As a conventional electric vacuum cleaner, a disposable dust-collecting paper pack is not used, and it is detachably attached to a suction path of a cleaner main body and has a spiral air flow (so-called cyclone) inside. It is known to use a cyclone type dust collecting device in which a cylindrical filter is provided in a dust box to be generated and dust filtered by this filter can be accumulated in the dust box. This dust collector is economical because it can be used semipermanently due to the maintenance of the filter, as compared with a disposable paper pack.

In the above structure, the dust collection force can be improved by reducing the size of the filter hole, and the dust passing through the filter can be significantly reduced, so that the load on the secondary filter disposed on the downstream side of the filter can be reduced. Although it is possible to reduce the number of motors and prevent the failure of the motor, etc., finer pores in the filter tend to cause clogging and reduce the dust collection efficiency.Therefore, it is necessary to frequently remove dust adhering to the filter. There was a problem with usability.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a dust collector and an electric vacuum cleaner which can easily remove dust adhering to a filter.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a dust box and a cylindrical filter which is disposed in the dust box and forms a cyclone space between the dust box inner wall and the dust box. Fixing means that is detachably fixed in the direction, a dust removing member that is disposed on the outer peripheral portion of the filter and that removes dust adhering to the filter by contacting the filter, and the dust removing member that is prevented from rotating with respect to the dust box. It is characterized by having a rotation stopping means.

The present invention further includes a cleaner body, a dust box mounted on the cleaner body, and a cylindrical filter disposed in the dust box to form a cyclone space between the dust box inner wall and the dust box inner wall. Fixing means for fixing the filter to the dust box so as to be engageable and disengageable in the circumferential direction, a dust removing member disposed on the outer peripheral portion of the filter for removing dust adhering to the filter by contacting the filter, and the dust removing member. It is characterized in that it is provided with a rotation stopping means for preventing rotation of the dust box with respect to the dust box.

[0007] It is desirable that the detent means forms engaging portions for engaging with each other on the dust removing member and the dust box, and at least one engaging portion for the dust removing member or the dust box is formed over the entire circumference. .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a cleaner body, which is detachably provided by inserting a cyclone type dust box 2 into the front portion of the cleaner body 1 from above, and an electric blower 3 at the rear portion of the cleaner body 1. It is built in. The vacuum cleaner body 1
Includes a front wheel 1a and a pair of rear wheels 1b and 1c so as to be movable on the floor surface.

A series of suction hoses, suction pipes and suction tools (not shown) are connected to the connection port 4 formed in the front end surface of the cleaner body 1.

The dust box 2 includes a substantially cylindrical outer filter portion 6 and a substantially cylindrical outer filter portion 6 inside a transparent or semi-transparent dust box body 5 formed of a transparent synthetic resin or the like. It is arranged concentrically with.

In the vicinity of the upper surface opening inside the dust box body 5, a plurality of engaging projections 5a projecting inward are formed at predetermined intervals in the circumferential direction, and the engaging projections are formed. The locking projection 41 of the cleaning plate 37 mounted on the outer periphery of the outer filter 9 to be described later abuts on 5a to prevent rotation.

In addition, engaging ribs 5b are formed at a plurality of positions at predetermined intervals in the circumferential direction in the vicinity of the upper end opening of the outer peripheral surface of the dust box body 5, and the upper lid portion 14 described later is attached to the dust box body 5. By pressing downward while rotating with respect to each other, the engaging ribs 14a formed on the inner peripheral portion of the upper lid portion 14 are engaged (bayonet engagement), and the upper lid portion 14 is removed. At this time, the upper lid portion 14 is configured so that it cannot be removed unless it is rotated about 90 degrees with respect to the dust box body 5.

The outer filter portion 6 has an outer tubular member 8
And an outer filter 9 that covers the periphery of a plurality of slits 8a formed in the upper side surface of the outer tubular member 8 along the vertical direction.

A flange portion 10 extending toward the inner wall of the dust box main body 5 is provided on the outer peripheral side surface of the outer tubular member 8, and a gap 34 is provided between the flange portion 10 and the inner wall of the dust box main body 5. Has been formed.

Therefore, the space between the inner wall of the dust box body 5 and the outer filter portion 6 is almost vertically divided by the collar portion 10 and is surrounded by the inner wall of the dust box body 5, the outer filter 9 and the collar portion 10. The first cyclone space 25, and the first cyclone space 25 and the gap 3
A space 26 is formed to collect dust communicating with each other.

The tip portion 10a of the collar portion 10 is bent downward so that when the dust moves from the first cyclone space 25 to the space portion 26 through the gap 34, the dust is less likely to be caught in the tip portion 10a. Therefore, dust can be efficiently accumulated in the space 26 of the dust box body 5.

A cleaning body 37 is arranged on the outer peripheral portion of the outer filter 9 of the outer filter portion 6 between the inner lid portion 8b and the upper surface of the collar portion 10. The cleaning body 37 is the outer filter portion. Upper and lower support members 38, 39 having holes through which 9 passes.
And a brush body 40 arranged in the axial direction of the outer filter 9 between the upper and lower support members 38 and 39, and the brush body 40 is in contact with the outer peripheral surface of the outer filter 9.

The brush body 40 is, in the present embodiment,
The outer filter 9 is formed at four positions on the outer peripheral surface at intervals of 90 degrees. As described above, when the upper lid 14 is removed, the upper lid 14 is rotated about 90 degrees with respect to the dust box body 5, The brush pair 40 can remove dust on the entire peripheral surface of the outer filter 9.

If the spacing between the brush bodies 40 is narrowed, the outer filter 9 can be completely removed of dust even if the rotation angle of the upper lid portion 14 with respect to the dust box body 5 is reduced, but the number of brush bodies 40 is reduced. Since the amount of dust increases, the swirling flow during cleaning may be impeded to reduce the dust collection force, and dust tends to adhere to the brush body 40.

The upper support member 38 of the cleaning body 37 is formed to have substantially the same size as the inner diameter of the upper opening of the dust box body 5, and the lower surface of the upper support member 38 has a diameter of the upper support member 38. Locking protrusions 41 are formed in the direction, and when the outer filter portion 6 is attached to the dust box main body 5, the locking protrusions 41 formed on the upper support member 38 of the cleaning body 37 are the dust box. The cleaning member 37 is engaged with one of the engaging protrusions 5a formed in the upper surface opening of the main body 5 and is prevented from rotating with respect to the dust box main body 5.

The inner filter portion 7 is composed of the inner cylindrical member 1
1, an inner filter 12 that covers the periphery of a plurality of slits 11a formed in the lower side surface of the inner tubular member 11 along the vertical direction, and a plurality of inner filters 12 that extend above the inner tubular member 11. It is composed of a cylindrical holder 11b having a slit.

A flange portion 13 extending toward the inner wall of the outer tubular member 8 is provided on the outer peripheral side surface of the inner tubular member 11 so as to protrude from the inner wall of the outer tubular member 8. A gap 35 is formed between them.

Accordingly, the space between the inner wall of the outer tubular member 8 and the inner filter portion 7 is substantially vertically divided by the collar portion 13, and is surrounded by the inner wall of the outer tubular member 8, the inner filter 12 and the collar portion 13. A second cyclone space 27 and a space portion 28 that collects dust that communicates with the second cyclone space 27 via a gap 35 are formed.

The tip portion 13a of the collar portion 13 is bent downward so that when the dust moves from the second cyclone space 27 through the gap 35 to the space portion 28, the dust is less likely to be caught by the tip portion 10a. Therefore, dust can be efficiently accumulated in the space 26 of the dust box body 5.

As shown in FIG. 8, the outer filter portion 6 and the inner filter portion 7 are fixed in a hanging state on the lower surface of the upper lid portion 14 that closes the upper end opening of the dust box body 5.

Specifically, the inner lid portion 8b extending above the outer tubular member 8 is fitted to the inner wall of the upper lid portion 14 with the seal ring 8c interposed therebetween. The space between the inner lid portion 8b and the dust box body 5 is hermetically sealed by a seal ring 8d provided on a step formed on the outer peripheral portion of the inner lid portion 8b.

On the other hand, the cylindrical holder 11b extending above the inner cylindrical member 11 is housed inside the upper lid portion 14 while holding the cylindrical filter 29, and the cylindrical holder 11b and the outer side are provided. The space between the cylindrical member 8 and the inner lid portion 8b is hermetically sealed by a seal ring 11c provided at the lower end of the outer peripheral surface of the cylindrical holder 11b.

Further, locking ribs 14a are provided on the inner peripheral surface of the upper lid portion 14 in the vicinity of the lower end opening thereof at predetermined intervals in the circumferential direction.
Is formed, and the upper lid portion 14 is attached to the dust box main body 5
By pressing downward while rotating with respect to each other, the engaging rib 14a is engaged with the engaging rib 5b of the dust box body 5.
And the upper lid portion 14 can be fixed to the dust box body 5.

On the side surface of the dust box 2, when the dust box 2 is attached to the cleaner body 1, the cleaner body 1
An intake pipe 15 communicating with the connecting port 4 of the cleaner is projectingly provided. In addition, the dust box 2 is formed near the center in the width direction.

A guide rib 18 extends in the direction along the inner surface of the dust box 2 in the vicinity of the opening 17 on the base side (inner surface side of the dust box 2) of the intake pipe 15, and the guide rib 18 allows the guide rib 18 to pass through the intake pipe 15. The air flowing into the dust box 2 can be guided in the direction along the inner wall of the dust box 2 (clockwise direction in FIG. 7). Thereby, the dust-containing air sucked from the intake pipe 15 can be swirled along the inner surface of the dust box 2 to generate a cyclone airflow in the dust box 2, and high dust collection efficiency can be obtained.

A handle 19 is formed in the vertical direction on the rear surface side of the cleaner body 1 on the outer periphery of the dust box body 5, and a hinge 20 provided below the handle 19 is provided at the bottom of the dust box body 5. A bottom lid 21 configured to be openable and closable is attached.

The bottom lid 21 pushes the upper portion of a lever 22 provided below the intake pipe 15 to thereby cause the lever 2 to move.
The clamp 23 formed at the lower end of 2 is disengaged from the locking portion 24 on the bottom lid 21 side to open the lower end opening of the dust box body 5, and the space portion 26 and the space portion 28 inside the dust box body 5 are provided. The dust accumulated on the bottom cover 2
When 1 is opened, it falls and the inside of the dust box 2 can be easily cleaned.

The types and materials of the outer filter 9 and the inner filter 12 are not particularly limited in the present invention. For example, a mesh filter is provided on the outer periphery of a tubular body that serves as a ventilation passage for filtered air. A filter or the like arranged in a shape is adopted. Further, other filters such as a filter in which a filter paper filter folded in a pleated shape (bellows shape) is arranged in a tubular shape can be adopted.

Next, the operation of the electric vacuum cleaner of this embodiment will be described.

In use, the upper lid portion 14 to which the outer filter portion 6 and the inner filter portion 7 are fixed is inserted while rotating with respect to the dust box body 5, and the engaging ribs 5b of the dust box body 5 and the upper lid portion 14 are inserted. The upper rib 14 is fixed to the dust box body 5 by engaging the locking ribs 14a.

At this time, a locking projection 41 formed on the upper support member 38 of the cleaning plate 37 arranged on the outer periphery of the outer filter 9
Is arranged at a position where it can engage with any one of the engaging projections 5a of the dust box body 5 in the vertical direction, and when the cleaning plate 37 rotates in the circumferential direction by a predetermined angle or more, the locking projection 41 of the cleaning plate 37. Is abutted against the engaging projection 5a of the dust box body 5 and is prevented from rotating.

When the electric motor blower 3 is driven,
The dust-containing air sucked from the outside enters the dust box 2 through the connection port 4 and the intake pipe 15, and swirls along the inner wall of the dust box body 5.

Specifically, in the first cyclone space 25, the air swirls and flows to the outer filter 9, dust is drawn downward through the gap 34, and is accumulated in the space 26 at the bottom of the dust box body 5.

Similarly, the air flowing inside the outer filter 9 further swirls. Specifically, the second cyclone space 2
In the inside of the air 7, the air swirls into the inside filter 12, and the space 28 below the collar 13 becomes negative pressure as the swirling occurs. Therefore, dust of a size that cannot pass through the inside filter 12 passes through the gap 35. And is pulled downward and deposited in the space 28 at the bottom of the dust box body 5.

The bottom lid 21 has a packing 36 for closing a gap between the bottom end of the outer tubular member 8 and the bottom lid 21.
Is provided, the air does not leak from the space 26 to the space 28 along the bottom lid 21.

The air whose dust has been filtered by the dust box body 5 flows upward while swirling inside the inner tubular member 11 and is further filtered by the cylindrical filter 29 inside the upper lid portion 14 and then at the rear end of the upper lid portion 14. After being discharged from the exhaust port 30 to the outside of the dust box 2, it is taken into the electric blower 3 through the communication passage 31 shown in FIG. 6, filtered from the electric blower 3 through the exhaust filter 32, and formed on the side surface of the cleaner body 1. The air is exhausted to the outside through the mesh-shaped exhaust port 33 and the mesh of the rear wheel 1b or 1c.

When the outer filter 9 is clogged, the upper lid portion 14 to which the outer filter portion 6 and the like are fixed is rotated about 90 degrees in the counterclockwise direction (arrow in FIG. 10) with respect to the dust box body 5. While lifting it up, the upper lid 1
The engagement rib 14a of No. 4 and the locking rib 5b of the dust box body 5 are disengaged.

The cleaning plate 37 attached to the outer peripheral portion of the outer filter 9 rotates in the circumferential direction at the same time as the outer filter 9 rotates together with the upper lid portion 14, and the locking projection 41 of the upper support member 38 thereof is disposed in the dust box body 5. The brush body 40 of the cleaning plate 37 relatively slides on the peripheral surface of the outer filter 9 that rotates together with the upper lid portion 14 by coming into contact with the engaging protrusion 5a of the outer filter 9 and the outer filter 9 is fixed by the brush body 40. Remove the attached dust.

In the above embodiment, one locking projection 41 is formed on the bottom surface of the upper support member 38 of the cleaning plate 37 in the radial direction, and in the circumferential direction near the upper end opening of the inner peripheral surface of the dust box body 5. Although the engaging protrusions 5a are formed at a plurality of locations,
As shown in FIGS. 13 and 14, an engaging projection 42 is formed on the outer periphery of the upper support member 38 of the cleaning plate 37 over the entire circumference thereof, and an engaging projection that projects inward over the entire circumference near the upper end opening of the dust box body 5. 43 may be formed, and in this case, since the locking protrusion 42 and the engaging protrusion 43 are formed over the entire circumference, the dust box body 5 of the cleaning body 38 when the upper lid portion 14 is attached to the dust box body 5. The cleaning body 38 can be reliably prevented from rotating with respect to the dust box body 5, and the outer filter 9 can be more reliably removed of dust.

In the above embodiment, the dust box 2 is attached to the cleaner body 1, but the dust box may be arranged in the extension pipe connected to the cleaner body. Good.

[0047]

According to the first or third aspect of the present invention, when the filter is clogged, the filter is rotated in the circumferential direction and removed from the dust box, so that the dust removing member attached to the outer periphery of the filter. Is prevented from rotating with respect to the dust box, and the dust removing member relatively slides on the outer peripheral surface of the filter to easily remove dust attached to the filter.

According to claim 2 or claim 4 of the present invention, in addition to the above effects, the filter is formed by forming at least one of the engaging portions formed on the dust removing member and the dust box over the entire circumference. When the dust removing member is fixed to the dust box, there is no directivity of the dust removing member with respect to the dust box, the dust removing member can be reliably prevented from rotating with respect to the dust box, and dust removal of the filter can be performed more reliably.

[Brief description of drawings]

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

FIG. 2 is a top view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is an external perspective view of the dust box.

FIG. 5 is a front view of the same.

FIG. 6 is a sectional view of the electric vacuum cleaner.

7 is a cross-sectional view taken along the line AA of the dust box in FIG.

FIG. 8 is a cross-sectional view of the dust box.

FIG. 9 is a sectional view of the dust box showing a state where the filter is lifted while rotating.

FIG. 10 is an external perspective view showing an operation of removing the upper lid portion from the dust box body.

FIG. 11 is a vertical cross-sectional view of the cleaning body.

FIG. 12 is a transverse cross-sectional view of the upper support member of the cleaning body when viewed from the bottom surface direction.

FIG. 13 is a top view of a dust box body showing another embodiment.

FIG. 14 is a transverse cross-sectional view of the upper support member of the cleaning body as viewed from the bottom surface direction.

[Explanation of symbols]

1 Vacuum cleaner body 5 Dust box body 5a Engagement protrusion (rotation preventing means) 5b Engaging rib (fixing means) 6 Outside filter section (filter) 9 Outer filter 14 Upper lid 14a Locking rib (fixing means) 37 Cleaning plate (dust removing member) 40 brush (dust removing member) 41 Locking protrusion (stopping means) 42 Locking protrusion (stopping means) 43 Engagement protrusion (rotation prevention means)

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3B062 AH02                 4D053 AA03 AB01 BA03 BB07 BC01                       CA01 CB11 CC05 CD13 CE02                       DA10                 4D058 JA02 JB22 KB11 MA31 QA01                       QA09 SA20

Claims (4)

[Claims] 1. A dust box, and a tubular filter that is disposed in the dust box and forms a cyclone space between the dust box inner wall and the dust box. The filter is fixed to the dust box so as to be detachable in the circumferential direction. A fixing means, a dust removing member disposed on the outer peripheral portion of the filter for removing dust adhering to the filter by coming into contact with the filter, and a rotation stopping means for preventing the dust removing member from rotating with respect to the dust box. Characteristic dust collector. 2. The anti-rotation means has engaging portions that engage with each other on the dust removing member and the dust box, and at least one engaging portion of the dust removing member and the dust box is formed over the entire circumference. The dust collector according to claim 1, characterized in that. 3. A vacuum cleaner main body, a dust box mounted on the vacuum cleaner main body, and a cylindrical filter which is disposed in the dust box and forms a cyclone space between the dust box inner wall and the dust box. A fixing means for fixing the dust box in the circumferential direction so that the dust box can be engaged and disengaged in a circumferential direction, a dust removing member disposed on the outer peripheral portion of the filter for removing dust adhering to the filter by contacting the filter, and the dust removing member in the dust box. An electric vacuum cleaner comprising a rotation stopping means for stopping rotation. 4. The anti-rotation means has engaging portions that engage with each other on the dust removing member and the dust box, and at least one engaging portion of the dust removing member and the dust box is formed over the entire circumference. The vacuum cleaner according to claim 3, wherein: