JPS5852653B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner, and particularly to an improvement in a dust collecting section configured to separate and collect coarse dust such as cotton dust and fine dust such as sand dust.

Conventionally, it incorporates a primary filter for coarse dust filtration such as cotton dust and paper waste, and a main filter for fine dust filtration such as sand dust.
Various methods have been used to perform separate dust collection and improve dust collection characteristics, but in general, the main filter is packed in a reliable manner, and there is no possibility that dust that is not filtered by the main filter will flow into the fan motor, etc. There was no.

However, a part of the primary filter is almost packed and filthy, and the cotton dust and paper waste that should be filtered by the primary filter passes through the gap in the mounting part of the primary filter and reaches the main filter, causing a negative effect on the main filter. Something often happened.

Therefore, the present invention eliminates the above-mentioned drawbacks, prevents cotton dust, paper waste, etc. from passing through the mounting portion of the primary filter, and maximizes the primary filter effect.

It is also an object of the present invention to provide a device that is simple in structure, easy to manufacture, and easy to assemble.

That is, the present invention attaches a backing to the outer periphery of the support plate, attaches the support plate airtightly to the inner wall surface of the dust case via this backing, and also brings the backing into airtight contact with the front wall of the main case. , a filter support part is provided on the support plate, this filter support part is provided away from the place where the backing is provided on the front side, and a main filter for collecting fine dust constituting the filter device is attached to the filter support part; , an airtight backing is sandwiched between the outer periphery of the main filter and the outer periphery of the filter support, and the outer periphery of the airtight backing is
The main filter is protruded outward from the outer periphery of the main filter and the filter support part, and the main filter is covered by a primary filter for collecting coarse dust constituting the filter device, and the inner periphery of the primary filter is connected to the outer periphery of the airtight backing. It is characterized by being airtightly fitted.

EMBODIMENT OF THE INVENTION Hereinafter, this invention will be explained in detail based on Example drawing.

Reference numeral 1 denotes a main body case, which integrally forms the handle portion 2.

3 and 4 are ribs provided inside the main body case 1, and these ribs 3,
4, the inside of the main body case 1 is divided into an electric blower storage chamber A1, a cord reel storage chamber B, and an exhaust chamber C.

5 and 6 are anti-vibration rubbers, and the electric blower 7 is housed in the electric blower storage chamber A by the anti-vibration rubbers 5 and 6.

Reference numeral 8 denotes a protection plate made of steel plate, which is held between the lip 3 and the vibration isolating rubber 6.

Reference numeral 9 denotes a wiring board held between the ribs 4, and is made of a flame retardant material that is relatively difficult to burn, such as polyamide resin or phenol resin.

This wiring board 9 is provided for making all electrical connections within the vacuum cleaner body, and is, for example, a printed circuit board used in radios, televisions, and the like.

This wiring board 9 also serves to separate the interior of the main body case 1 into an electric blower storage chamber A and a cord reel storage chamber B together with the lip 4, and further serves to guide airflow from the electric blower storage chamber A to the exhaust chamber C. This forms an exhaust duct.

Furthermore, it also serves as a support plate for the cord reel, which will be described later.
They are placed for various purposes.

Reference numeral 10 denotes a cord reel support portion and a contact stand provided on the wiring board 9, and is integrally constructed.

Reference numeral 11 denotes a reel shaft of the cord reel, which is fixed to the reel support portion 10 of the wiring board 9 with screws.

Reference numeral 12 denotes a cord reel rotatably held by the reel shaft 11, and a cord 1 is attached to the side wall of the cord reel 12.
A brake ring 13 of a stopper 49 for regulating the winding operation of the cord reel 6 and a gear 14 for transmitting the rotational force of the cord reel 12 to a dust removal mechanism section to be described later are integrally provided.

Reference numeral 15 denotes all springs with one end fixed to the reel shaft 11 and the other end fixed to the cord reel 12.
The energy accumulated in the cord 16 is used to cause the cord 16 to wind up.

17 is a driving gear that meshes with the gear 14, and this driving gear 1
7 is attached to a gear support plate 53.

Reference numeral 18 denotes a face gear attached to the gear support plate 53, which meshes with the drive gear 17 and rotates its axis of rotation by 900 degrees.

Reference numeral 19 denotes a drive coupling provided integrally with the face gear 18, and is arranged on the opening surface of the main body case 1.

20 is the rotating shaft of the drive gear 17, 21 is the face gear 18
22 is a dust indicator for displaying the degree of dust accumulation, and indicator mounting tube 23
It is installed in the handle part 2 of the main body case 1.

Reference numeral 24 denotes an exhaust port for discharging airflow from the exhaust chamber C to the outside of the main body case 1, and a clean filter 25 is disposed inside this exhaust port 24.

This clean filter 25 serves both to rectify the exhaust flow and to muffle sound, and is made of a breathable material such as urethane foam.

A dust case 26 stores dust collected by a hose (not shown) for sucking the dust, and the inside of the dust case 26 is divided by a rib 27 into a coarse dust chamber E and a fine dust chamber F.

2B is a suction port to which a hose is connected, 29 is a check valve provided at the suction port 28, 30 is a bundle portion screwed to the dust case 26, and 31 is detachably held in the main case 1 of the dust case 26. With the clamp for spring body 3
2 is rotatably provided in the handle portion 30.

A dust collecting and removing device 33 is detachably attached to the opening of the dust case 26, and is composed of a filter device and a dust removing device.

The filter device is a net filter 34 for collecting coarse dust (
It consists of a primary filter) and a main filter 35 for collecting fine dust.

The dust removal device 36 includes a dust removal gear 39, a dust removal body 40, and a rotating plate 4.
1. It consists of a dust removal tube 39, etc.

A support plate 38 supports the filter device and the dust removal device 36.

A backing 37 surrounding the outer periphery of the support plate 38 is attached.

The rotation transmission section on the side of the dust removal device 36 includes a transmission gear 43, a shaft 44,
It consists of a passive coupling 45 and a coupling spring 46.

A dust removal device 36 is arranged behind the main filter 35.

A dust removal gear 39 equipped with a dust removal body 40 that slides on the back surface of the main filter 35 is rotatably attached to the support plate 38.

A dust removal gear 4 is mounted on a rotary plate 41 that rotates the dust removal gear 39.
2 are integrally provided, and the dust removal knob 42 can be operated by hand only when the dust case 26 is removed from the main body case 1.

A transmission gear 43 fixed to the shaft 44 by press fitting or screwing is attached to the support plate 38 so as to mesh with the dust removal gear 39.

A passive coupling 45 is provided on the shaft 44 using a coupling spring 46 so as to be vertically slidable.

By fitting this passive coupling 45 into the first drive coupling 19 provided on the main body case 1 side, the rotating cuff 5 of the cord reel 12 - the drive gear 14 - the drive gear 17
- Face gear 18 - Driving force coupling 19 - Passive coupling 45 Series gear 43 - Dust removal gear 39 is transmitted to the dust removal body 40, and the dust removal body 40 rotates to remove the dust from the main filter.
The back surface of 35 is rubbed, vibration is generated, and the dust removal action is performed.

47 indicates running wheels provided on the main body case 1, and 48 indicates running casters provided on the dust case 26.

Reference numeral 49 is a remote control relay for remotely controlling the operation of the vacuum cleaner motor 7 using a remote control switch 50 provided at the end of the hose.

Reference numeral 51 indicates a power consumption changeover switch which is arranged to change the input of the vacuum cleaner motor 7 and change the suction strength so that efficient cleaning can be performed.

Reference numeral 52 indicates a current fuse for preventing the coil of the motor 7 from burning out when an abnormally large current flows through the motor 7 compared to a steady state.

Next, the main parts of the present invention will be described in detail.

As shown in FIG. 3, the support plate 38 that supports the dust removal device 36 has a flange portion 38a into which a ring 37a of a backing 37 for airtightly and removably disposed in the dust case 26 is fitted.

This backing 37 is in airtight contact with the front wall of the main body case 1, so that the two parts are kept airtight.

The support plate 38 has a filter support portion 38b to which the main filter 35 is attached.

The filter support portion 38b is provided at a distance toward the front from where the backing 38 is provided.

The main filter 35 is attached to this filter support portion 38b via an airtight backing 53.

The main filter 35 is fixed with screws 54.

Since the mounting section of the main filter 35 is sealed with an airtight backing 53, dust cannot be blown out.

The airtight backing 53 is easily assembled because it is simply clamped between the main filter 35 and the support plate 38.

The reason why the airtight backing 53 and the backing 38 are not integrated is as follows.

If both backings 53 and 38 are made integrally, the shape will be complicated.

It becomes difficult to manufacture and the workability of assembly also deteriorates.

Furthermore, since both backings 53, 3.8 are placed apart, if they were to be made in one piece, a connecting part that does not function as airtight would be required, increasing material costs.

In order to eliminate these problems all at once, it was formed as a separate body.

The airtight backing 53 is made of an elastic material such as foamable synthetic resin (for example, color foam, maltblen, etc.), light vinyl chloride, rubber, or the like.

The main filter 35 is composed of a filter part 35a made of a filter material such as paper or cloth, and a frame 35b that supports the filter part 35a.

The primary filter 34 includes a ventilation section 34a formed of a wire mesh, a synthetic resin net, etc., a support frame 34b, and a support frame 34b.
The U-shaped portion 37b of the packing 37 has a fitting rib 34c.

Backing 531I for airtightness of the main filter 35
'i, it protrudes outward slightly larger than the outer diameter of the main filter frame 35a, and is arranged so as to be in contact with the inner circumferential surface of the primary filter support frame 34b.

Further, the secondary filter 35 is arranged to be detachably attached to the support plate 38.

The configuration is as above, and the dust case 2 is installed in the roughening chamber.
6, a rib 27, and a primary filter 34, and the dust case 2 prevents dust from passing through the mounting surface.
6. The opening part is the ring part 37a of the packing 37 and the rib 27.
and the primary filter 34 is the U-shaped part 37 of the packing 37.
The b1 primary filter 34 and the support plate 38 or main filter 35 are reliably partitioned by the airtight packing 53.

Therefore, from the coarse dust chamber E to the fine dust chamber F, it must pass through the net part 34a of the primary filter 34 as shown by the solid line in Figure 4, and it is possible to prevent dust from permeating through the attachment part as shown by the dotted line in Figure 4. It is effective to reliably filter out coarse particles such as cotton dust and paper waste, and it is possible to prevent these coarse particles from adhering to the main filter 35 and causing various draughts.

In this way, the airtight backing of the main filter 35 can also be used as the dust permeation prevention backing of the primary filter 34 with a simple structure, and its practical effects are excellent.

The shredded primary filter 34 is supported by the primary filter 34.
Since the inner periphery of the filter 34 is airtightly joined to the outer periphery of the airtight backing 53, the support of the secondary filter 34 can be carried out reliably and easily.

Furthermore, since the airtight backing 53 is sandwiched between the outer periphery of the filter device 33 and the outer periphery of the front side portion of the support plate 38, the main filter 35 of the filter device 33 is
This prevents the air from flowing to the electric blower 7 side without passing through it.

Furthermore, the airtight backing 53 and the main filter 35
, the support plate 38 and the primary filter 34 are airtight in one place, and the primary filter 3 as described above is
It also has the reliable and simple support function of 4.

As described above, the present invention attaches a backing to the outer periphery of a support plate, airtightly attaches the support plate to the inner wall surface of the dust case via this backing, and airtightly attaches the backing to the front wall of the main case. A filter support part is provided on the support plate, and this filter support part is provided away from the front side from where the backing is provided, and the main filter for collecting fine dust constituting the filter device is attached to the filter support part. At the same time, an air-tight backing is sandwiched between the outer periphery of the main filter and the outer periphery of the filter support part, and the outer periphery of the air-tight backing is placed further outward than the outer periphery of the main filter and the filter support part. The main filter is covered with a protruding primary filter for collecting coarse dust constituting the filter device, and the inner periphery of the primary filter is hermetically fitted to the outer periphery of the airtight backing. It is.

According to the above configuration, the following actions and effects can be expected.

(1) Since the airtight backing was sandwiched between the outer periphery of the main filter and the outer periphery of the filter support, the airtightness of the fitting portion between the main filter and the filter support was improved.

(2) The airtight backing is attached by simply clamping it, so it is easy to assemble.

(3) Since the inner periphery of the primary filter is hermetically fitted to the outer periphery of the airtight backing, the installation of the primary filter can prevent dust from blowing through the part.

(4) The airtight backing is simple in construction because it simultaneously seals the support plate and the main filter, and the main filter and the primary filter.

(5) The primary filter is attached by fitting the inner periphery of the primary filter to the outer periphery of the airtight backing, making it extremely easy to attach and detach the primary filter.

(6) Although the backing attached to the outer periphery of the support plate and the airtight backing are separate pieces, they have the following advantages compared to those made in one piece.

That is, since the backing and the air-tight backing are provided separately, if they are combined into one, they will not leak unless a connecting part that is not related to the air-tight function is provided.

Since the connecting part has a considerable size, the cost will end up being higher than if it were made separately.

Furthermore, if they are integrated, they have a complicated shape, which makes it difficult to manufacture, and also makes it difficult to assemble them into a filter device.

By making them separate, such problems can be solved all at once.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a vacuum cleaner showing an embodiment of the present invention, FIG. 2 is an electrical circuit connection diagram of the embodiment of FIG. 1, and FIG.
FIG. 4, an exploded sketch of the manufactured parts of the present invention, is an enlarged sectional view of the main parts of the present invention. 1... Body case, 7... Electric blower, 12... Cord reel, 26... Dust case, 33... Filter device, 34・
...Primary filter 35 ... Main filter, 36 ... Dust removal device, 38 ... Support plate, 38 ... Filter support part, 53・・・・・・
...Airtight backing, 38...Backing.

Claims (1)

[Claims] 1. A main body case having an electric blower and a cord reel, a dust case detachably attached to this main body case, a filter device and a dust removal device provided in this dust case, and this dust removal device. and a support plate to which the filter device is attached, a backing is attached to the outer periphery of the support plate, and the support plate is airtightly attached to the inner wall surface of the dust case via this backing, and the backing is attached to the main body case. A filter support part is provided on the support plate in airtight contact with the front wall part, and the filter support part is provided away from the backing on the front side, and is used for collecting fine dust constituting the filter device. The main filter is attached to the filter support part, an airtight backing is sandwiched between the outer periphery of the main filter and the filter support part, and the outer periphery of the airtight backing is attached to the main filter and the filter support part. The main filter is covered with a primary filter for collecting coarse dust constituting the filter device, and the inner periphery of the primary filter is airtightly attached to the outer periphery of the airtight backing. A vacuum cleaner characterized by being fitted together.