JPH04144524A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent the clearance from being generated between the inner peripheral wall of a dust collecting case and a filter unit even if the dust collecting case is deformed by setting a distance between the inside of a pin and the outer peripheral surface of annular packing larger than a distance between the inner peripheral surface of the dust collecting case and the abutting surface of an engaging part. CONSTITUTION:At the time of fitting a filter unit 12, even if a formed dust collecting case 11 is deformed, its deformation can be reformed by allowing the abutting surface 18c of each engaging part 18 to abut on the inside 17a of each pin 17, respectively. Therefore, the dust collecting case 11 and a motor- driven case can be connected without generating a step difference in its connecting part. Also since a distance M between the inside 17a of the pin 17 and the outer peripheral surface of annular packing 15 is set larger than a distance N between the inside wall surface 11c and the abutting surface 18a, a sealing part 15a of the annular packing 15 becomes a compressed state and abutted on the inner peripheral wall 11c of the dust collecting case 11, therefore, it does not occur that a clearance is generated between the inner peripheral wall 11c of the dust collecting case 11 and the filter unit 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vacuum cleaner in which a filter unit is fitted into an opening of a dust collection case.

(Prior Art) Conventionally, as shown in FIG. 9, a vacuum cleaner a has a connection port 1 at the front to which a suction hose (not shown) is detachably connected.
A dust collection case 1 in which an opening 1b is formed at the rear part a and an opening part 1b, respectively.
and a filter unit 2 fitted into the opening lb,
It is comprised of an electric case 3 in which an electric blower (not shown) is connected to the opening 1b and creates a negative pressure inside the dust collection case 1.

As shown in FIG. 10, the filter unit 2 includes a frame body 5 consisting of a filter frame body 5a holding a filter 4, a flange 5b integrally formed with the filter frame body 5a, and an outer periphery of the flange 5b. It consists of an annular packing 6 attached to.

The annular packing 6 seals between the inner circumferential wall 1c of the opening 1b and the frame 5, and as shown in FIG. It is composed of a base 6C having an annular contact surface 6b that comes into contact with the flange 5b, and the annular contact surface 6b has a plurality of through holes 7.
．． 7... is formed.

On the other hand, the flange 5b has a plurality of bins 8 extending toward the front side of the dust collection case 1 at positions corresponding to the through holes 7, 7, .
8... are provided protrudingly, and the bottles 8, 8... are provided in the through holes 7,
7... is inserted.

As shown in FIGS. 12 and 13, the filter unit 2 configured in this manner is fitted into the opening 1b of the dust collection case 1 from the tip side of the bin 8, 8, etc. to collect dust. Assembled in case 1.

During this assembly, the annular packing 6 is attached to the bin 8.8.
... prevents it from coming off the flange 5b.

By the way, in the annular packing 6, the diameter of the contact surface 6d that contacts the outer peripheral end surface of the flange 5b is smaller than the diameter of the outer peripheral end surface of the flange 5b, and larger than the diameter of the inner peripheral wall IC when attached to the flange 5b. It is shaped to be.

This connects the filter unit 2 to the opening 1 of the dust collection case 1.
This is to ensure that sealing by the annular packing 6 is performed when it is fitted into the inside of the annular packing 6.

(Problem to be solved by the invention) However, in such conventional vacuum cleaners,
The dust collection case 1 is molded by plastic injection molding from the viewpoint of manufacturability such as material cost and manufacturing time.

The wall thickness of the injection molded dust collection case 1 is thin, and the area of the opening 1b is large. Therefore, when the dust collection case 1 is removed from the mold of the injection molding machine, the opening 1b is easily deformed, and the filter unit 2 is inserted into the deformed opening 1b.
If they are fitted together, a gap will be created between the inner circumferential wall 1c and the seal portion 6a.

As a result, the electric blower sucks the dust collected in the dust collection case 1 through the gap and discharges it to the outside without being passed through the filter 4.
There were problems such as the electric blower breaking down due to the dust it attracted.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a vacuum cleaner that does not create a gap between the inner circumferential wall of the dust collection case and the filter unit even if the dust collection case is deformed. This is the purpose.

(Means for Solving the Problems) In order to achieve the object, the present invention provides an electric case to which a suction hose is detachably connected to the front part and an electric blower is built in to suck dust from the suction hose. A dust collecting case having a connecting opening formed in the rear thereof, and a filter unit fitted into the opening, the filter unit being attached to a frame holding a filter, and an outer periphery of the frame, The annular packing includes an annular packing that seals between the inner circumferential wall of the opening and the frame, and the annular packing includes a sealing part that abuts the inner circumferential wall of the opening and a base that abuts the frame. , a vacuum cleaner in which a plurality of through holes are formed in the base, wherein a bottle is protruded from the frame corresponding to the through hole and inserted into the through hole, and the tip of the bottle is inserted into the through hole. A plurality of engaging portions are provided on the inner circumferential wall of the dust collecting case, each of which protrudes from the base toward the front side of the dust case, and has a contact surface that comes into contact with the inside of the bin, corresponding to each bin. The gist is that the distance between the inside of the bottle and the outer peripheral surface of the annular packing is set larger than the distance between the inner wall surface of the dust collection case and the contact surface of the engaging part.

(Function) In the vacuum cleaner configured in this way, a plurality of locks 9 are provided inside each of the plurality of pins provided on the frame body, and a plurality of locks 9 are provided corresponding to each pin on the inner circumferential wall of the dust collection case. Since the filter unit is fitted into the opening of the dust collection case by bringing the mating parts into contact with each other, if the dust collection case is deformed, it will be corrected by the plurality of pins.

(Example) Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is an exploded perspective view showing the appearance of the vacuum cleaner according to this embodiment, Fig. 2 is a perspective view of the filter unit seen from the front, Fig. 3 is an enlarged sectional view of the main parts, and Fig. 4 is an assembled perspective view. An exploded perspective view of the dust case and filter unit seen from the back side. Figure 5 is a sectional view of the main parts showing the state before the filter unit is installed in the dust collection case. Figure 6 is a filter unit installed in the dust collection case. FIG.

In Figure 1, vacuum cleaner A has a suction hose (
a dust collection case 11 having a connection port 11a to which a device (not shown) is detachably connected, and an opening 11b at the rear thereof;
A filter unit 12 fitted into the opening 11b;
The dust collection case 13 includes an electric blower (not shown) that is connected to the opening 11b and creates a negative pressure inside the dust collection case 11.

The filter unit 12 includes a frame 1 as shown in FIG.
4, and an annular packing 15 attached to the outer periphery of the frame 14.

The frame 14 is a housing-like filter frame 14 with both ends open.
a, and a flange 14b integrally formed on the outer periphery of the rear side (right side in FIG. 2) of the filter frame 14a, and the opening on the rear side of the filter frame 14a has good ventilation and , a filter 14c made of a fine-mesh material (for example, filter paper) is held.

Moreover, the frame 14 is strong because the flange 14b is formed on the outer periphery of the filter frame 14a.

The annular packing 15 has an opening 1 as shown in FIG.
A seal portion 15a that comes into contact with the inner peripheral wall 11c of 1b, and leg portions 15b, 15 for attaching to the peripheral end of the flange 14b.
A plurality of through holes 16, 16, . . . are formed at predetermined intervals in the leg portion 15b.

On the other hand, pins 17, 17, . , the tips of the pins 17, 17, .

Further, as shown in FIG. 4, a plurality of engaging portions 18, 18, .

This engaging portion 18 extends toward the front of the dust collection case 11, and has a contact surface 18 that comes into contact with the inner side 17a of the pin 17.
a, and the abutting surface 18a is connected to the inner peripheral wall 11.
It has leg portions 18c for holding at a position a predetermined distance apart from C.

Furthermore, as shown in FIG. 5, the distance M between the inner side 17a of the pin 17 and the outer peripheral surface of the annular packing 15 is the distance M between the inner wall surface 11c of the dust collection case 11 and the contact surface 18a of the engaging part 18. The distance N is set to be larger than the distance N between the two.

Further, as shown in FIG. 6, the contact surface 18a and the inner peripheral wall 1
1c, the inner side 17a of the pin 17 comes into contact with the contact surface 18a.

In the above configuration, first, as shown in FIG. 5, the filter unit 12 shown in FIG. 3 is aligned with the tip of each pin 17 facing each engaging portion 18 of the dust collection case 11. Then, a contact surface 18 of each engaging portion 18 is provided on the inner side 17a of each pin 17.
a are brought into contact with each other, and the filter unit 12 is pushed into the opening 11b of the dust collection case 11 and fitted.

At this time, even if the molded dust collection case 11 is deformed, the deformation can be corrected by bringing the contact surfaces 18c of each engaging portion 18 into contact with the inner sides 17a of each pin 17, respectively. Become.

This allows the dust collection case 11 and the electric case 13 to be connected without creating a level difference at the connection portion.

Furthermore, the distance M between the inner side 17a of the bottle 17 and the outer peripheral surface of the annular packing 15 is the same as that between the inner wall surface 11c and the contact surface 18a.
Since the distance N is set larger than the distance N between the sixth
As shown in the figure, the seal portion 15a of the annular packing 15
is in a compressed state, and the inner peripheral wall 11 of the dust collection case 11
c, there is no gap between the inner circumferential wall 11c of the dust collecting case 11 and the filter unit 12.

Therefore, unlike in the past, the electric blower does not suck the collected dust through the gap and spit it out without being filtered by a filter, or the electric blower does not malfunction due to the sucked dust.

In addition, the filter unit does not require a complicated structure because it is fitted into the dust collection case by making contact with the engagement portion of the dust collection case using a conventional bottle.

FIG. 7 shows a second embodiment of the present invention, and shows an enlarged view of the main parts.

In this embodiment, a tapered portion 21 is formed at the tip of the bottle 20, making it easier to insert the bottle 20 into the engaging portion.

FIG. 8 shows a third embodiment of the present invention, and shows an enlarged view of the main parts.

In this embodiment, a tapered portion 30 is formed at the tip of the engaging portion 18 to facilitate insertion of the bottle into the engaging portion 18.

(Effects of the Invention) As explained above, according to the present invention, a plurality of engaging portions each having a contact surface that contacts the inside of the bottle are provided on the inner circumferential wall of the dust collection case in correspondence with each bottle. 1. By setting the distance between the inside of the bin and the outer circumferential surface of the annular packing to be larger than the distance between the inner wall surface of the dust collection case and the contact surface of the engagement part, the dust collection case is deformed. Even if the dust collecting case is closed, a gap will not be formed between the inner circumferential wall of the dust collection case and the filter unit. In addition, the filter unit does not require a complicated structure because it is fitted into the dust collection case by making contact with the engagement portion of the dust collection case using a conventional bottle.

[Brief explanation of the drawing]

The drawings show one embodiment of the vacuum cleaner according to the present invention, and the first embodiment shows the vacuum cleaner according to the present invention.
The figure is an exploded perspective view showing the external appearance of the vacuum cleaner, Figure 2 is a perspective view of the filter unit seen from the front, Figure 3 is an enlarged sectional view of the main parts of the filter unit, and Figure 4 is the dust collection case and filter. An exploded perspective view of the unit seen from the back side, Figure 5 is a sectional view of the main parts showing the filter unit before it is installed in the dust collection case, and Figure 6 shows the filter unit installed in the dust collection case. 7 is a sectional view of essential parts showing a second embodiment of the present invention; FIG. 8 is a sectional view of essential parts showing a third embodiment of the present invention; FIGS. 9 to 13
The figure shows a conventional vacuum cleaner, Figure 9 is an exploded perspective view showing the external appearance of the vacuum cleaner, Figure 10 is a perspective view of the filter unit seen from the front, and Figure 11 is an enlarged view of the main parts of the filter unit. A sectional view, FIG. 12 is an exploded perspective view of the dust collection case and the filter unit as seen from the back side, and FIG. 13 is a sectional view of the main parts showing the filter unit attached to the dust collection case. A... Vacuum cleaner 15... Annular packing M, N... Distance 15a... Seal portion 11... Dust collection case 15d... Base 11b
...Opening part 16...Through hole 11C...
Inner peripheral wall 17... Bin 12... Filter unit 17a... Bin inside 13... Electric case
18... Engaging portion 14... Frame body
18a...Abutment surface 14c...Filter A...Electric cleaner 11...A dust case 11b...Lock part 11c...Inner F! iI da 12... filter unit yto 13... electric booth 14... rod 14c... filter 15... 11 戊HA Tsukitsuku 15a... seal evil 15d... tea 16 ...Through hole 17...Hi-in 17a...Inside bottle ゛1 18...Sound-engaging portion 18a...Matched surface M, N...Distance chart Fig. 4C D! Figure Figure Figure 1FJ10 Figure $11 Figure

Claims (1)

[Scope of Claims] A dust collection case having a suction hose detachably connected to the front part and an opening formed in the rear part for connecting an electric case having a built-in electric blower for sucking dust from the suction hose; a filter unit fitted into the opening; the filter unit is provided with a frame holding a filter;
The annular packing is attached to the outer periphery of the frame and seals between the inner circumferential wall of the opening and the frame; A vacuum cleaner comprising a base that abuts a frame and has a plurality of through holes formed in the base, wherein pins are provided protruding from the frame corresponding to the through holes and are inserted into the through holes. At the same time, a plurality of engaging portions are provided on the inner circumferential wall of the dust collecting case, the tip of the pin protruding from the base toward the front side of the dust collecting case, and having a contact surface that contacts the inside of the pin. are provided in correspondence to each pin, and the distance between the inside of the pin and the outer peripheral surface of the annular packing is set to be smaller than the distance between the inner wall surface of the dust collection case and the contact surface of the engaging portion. A vacuum cleaner characterized by a large setting.