JPH0525563Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner equipped with a bumper.

(Prior art) According to Japanese Utility Model Application Publication No. 49-96766, a hollow bumper surrounding the main body of the vacuum cleaner is provided, and exhaust air is guided into the bumper through a large number of small exhaust holes provided on the entire surface of the bumper. Vacuum cleaners are known that have a greater impact absorption effect when the vacuum cleaner hits furniture or the like by discharging air, and also reduce noise by reducing the exhaust speed. The bumper is attached by being engaged with an engagement groove provided in a lower casing of the cleaner body.

(Problem to be solved by the invention) By the way, the main body of a vacuum cleaner is generally formed by combining an upper casing and a lower casing, and the airtightness of the joint between the upper and lower casings in this type of cleaner is limited to the airtightness between them. This is done through contact with the fins formed on the sandwiched semi-rigid bumper. However, the reliability of ensuring airtightness by the fins is low, and as a result, there is a problem in that the air in the exhaust chamber easily leaks out of the vacuum cleaner body through the joint between the upper and lower casings, and accordingly, the leakage of noise is also large.

Moreover, in vacuum cleaners, a high-performance exhaust filter is sometimes provided in the exhaust chamber in addition to the dust collection filter in the dust collection chamber to purify the air to be exhausted. In a vacuum cleaner having an exhaust filter built into the exhaust chamber as described above, there is a problem in that air leaks outside from the joint between the upper and lower casings without passing through the filter.

Furthermore, since the hollow bumper described in the above publication is attached to an engaging groove formed on the outer surface of the lower casing of the vacuum cleaner body, this hollow bumper cannot prevent air from leaking from the exhaust chamber through the joint between the upper and lower casings.

The purpose of this invention is to use a hollow bumper to prevent the air in the exhaust chamber from leaking to the outside from the joint between the upper and lower casings of the vacuum cleaner body, when the exhaust chamber has a built-in exhaust filter. To provide a vacuum cleaner which can reduce exhaust noise and improve exhaust purification performance by preventing such problems.

(Means for Solving the Problems) In order to achieve the above object, a vacuum cleaner according to the present invention includes a vacuum cleaner main body having an exhaust chamber and an exhaust filter built into the exhaust chamber, and a vacuum cleaner according to the present invention. A hollow bumper with an approximately H-shaped cross section made of an inflatable rubber-like elastic material is sandwiched between the mating edges of the upper casing and lower casing that make up the machine body, and the upper fitting groove of this bumper is inserted into the upper part. Fitting the mating edge of the casing, and fitting a lower fitting groove of the bumper to the mating edge of the lower casing, and communicating the inside of the bumper with the exhaust chamber on the downstream side of the exhaust filter. , a large number of small exhaust holes are provided on the outer part of the bumper located on the outer side of the vacuum cleaner body.

(Function) In the above configuration, the exhaust gas in the exhaust chamber is guided into the hollow bumper, and is discharged to the outside through a large number of exhaust holes while inflating the bumper. Due to the expansion, the bumper sandwiched between the mating edges of the upper and lower casings forming the main body of the vacuum cleaner brings the inner surface of the upper fitting groove into close contact with the mating edge of the upper casing, and the inner surface of the lower fitting groove. It is brought into close contact with the mating edges of the lower casing to ensure airtightness at the mating portions of the upper and lower casings. In this way, the airtightness of the exhaust chamber is improved by using the bumper that expands with exhaust air, so the air in the exhaust chamber is less likely to leak out of the vacuum cleaner body through the joint between the upper and lower casings, and the exhaust gas is It is possible to reliably pass through the exhaust filter in the exhaust chamber and exhaust it to the outside from the bumper.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

Reference numeral 11 in FIGS. 1 and 2 denotes a vacuum cleaner body, which is formed by combining an upper casing 12 and a lower casing 13 made of synthetic resin. As shown in FIG. 1, an electric blower 14 is built into the vacuum cleaner main body 11, and an exhaust chamber 1
5 is formed. No exhaust port is provided at the rear of the cleaner body 11.

In addition, 17 in FIG. 1 is a dust collection chamber formed in the vacuum cleaner main body 11 in front of the electric blower 14;
8 is a bag-shaped dust collection filter, 19 is an opening/closing lid,
20 is a dust collecting hose.

Air that has passed through the electric blower 14 is allowed to flow into the exhaust chamber 15 . This exhaust chamber 15 has an exhaust filter 16 built therein.
This filter 16 includes the dust collecting filter 18.
Dust collection filter 1
It is possible to capture the fine dust that passed through 8.

A bumper 21 is sandwiched between the upper casing 12 and the lower casing 13. This bumper 21 is made of a rubber-like elastic material and is formed into an expandable hollow shape.

Specifically, as shown in FIGS. 2 and 3, there are upper and lower fitting grooves 2 facing each other in the middle part in the thickness direction.
2 and 23 are provided to form a hollow structure with a substantially H-shaped cross section. Note that the bumper 21 has an annular shape with both end surfaces bonded together. this bumper 2
1 is provided over the entire joint portion of the upper and lower casings 12 and 13. That is, as shown in FIG. 2, the bumper 21 has the upper fitting groove 22 fitted to the mating edge 12a of the upper casing 12, and the lower fitting groove 23 fitted to the mating edge 13a of the lower casing 13. , upper and lower casing 1
It is installed sandwiched between 2 and 13.

The bumper 21 is communicated with the exhaust chamber 15. As a structure for this purpose, as shown in FIG. 3, a communication port 24 is provided in the inner peripheral portion 21a of the bumper 21 inside the vacuum cleaner body 11 and facing the exhaust chamber 15, and the communication port 24 is provided between the inside of the bumper 21 and the exhaust chamber 15 through the port 24. It communicates with In addition, bumper 21
The communication between the bumper 21 and the exhaust chamber 15 may be achieved by bending both ends of the bumper 21 so that their outer circumferential portions overlap so that the end opening surfaces of these ends face into the exhaust chamber 15. .

Furthermore, a large number of small exhaust holes 25 are provided throughout the outer peripheral portion 21b of the bumper 21 located outside the cleaner body 11. Note that it is desirable that the exhaust hole 25 is not provided in a portion facing the communication port 24.

To use the vacuum cleaner configured as described above, it is sufficient to operate the electric blower 14. As a result, the pressure inside the exhaust chamber 15 increases, and the exhaust pressure increases through the communication port 24.
As the pressure spreads through the hollow bumper 21, the bumper 21 made of rubber-like elastic material expands due to the increased internal pressure.

Therefore, the mating edges 12a, 13 of the upper and lower casings 12, 13 that sandwich this bumper 21 are
a, and upper and lower fitting grooves 2 that are fitted separately thereto.
The inner surfaces of 2 and 23 are in close contact with each other.

Therefore, the dimensional accuracy of the bumper 21 cannot be achieved accurately because it is made of a rubber-like elastic material, and the dimensional accuracy of the upper and lower casings 12 and 13 cannot be achieved accurately because they are made of synthetic resin.
1 and the upper and lower casings 12 and 13,
When using a vacuum cleaner, the hollow bumper 21, which has a substantially H-shaped cross section, expands to make it disappear.
That is, the airtightness of the exhaust chamber 15 during use can be improved, and the exhaust chamber 15 is
Prevents internal air from leaking to the outside.

Therefore, it is possible to reduce the leakage of exhaust noise from the exhaust chamber 15 to the outside of the vacuum cleaner main body 11 through the joining part of the upper and lower casings.
After being purified, it can be discharged to the outside through the bumper 21.

Since a large number of exhaust holes 25 are provided in the outer peripheral portion 21b of the bumper 21, the exhaust gas flowing into the bumper 21 flows while spreading throughout the bumper 21 while maintaining the expansion of the bumper 21 as described above. , are exhausted to the outside through the exhaust hole 25.
Therefore, a long exhaust air path can be ensured, and accordingly, a large exhaust area can be secured, so that so-called soft exhaust where the force of the exhaust air is weak can be achieved. In addition to this, the exhaust air flows from the exhaust chamber 15 to the communication port 24.
When flowing through the bumper 21, it is once squeezed and expanded again within the bumper 21.
Exhaust noise can be lowered.

In addition, the bumper 21 made of rubber-like elastic material has elastic deformation of its outer circumferential portion 21a and air cushioning effect due to the pressure of the exhaust gas guided inside, so it absorbs shock when it hits furniture, etc. The effect is large.

[Effects of the invention] As explained above, in the vacuum cleaner according to the invention, rubber-like elastic A hollow bumper with an approximately H-shaped cross section formed in an expandable manner from a material is sandwiched, and an upper fitting groove of the bumper is fitted to the mating edge of the upper casing, and a lower fitting groove of the bumper is fitted to the mating edge of the upper casing. The lower casing is fitted with the mating edge of the lower casing, and the air that has passed through the exhaust filter is exhausted through the interior of the bumper and out of the numerous exhaust holes, so that the air in the exhaust chamber is transferred between the upper casing and the lower casing that make up the main body of the vacuum cleaner. The hollow bumper prevents leakage to the outside from the joint portion of the exhaust gas chamber, reducing exhaust noise, and improving exhaust purification performance by ensuring that the exhaust gas passes through the exhaust filter in the exhaust chamber.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
FIG. 1 is an overall side view, FIG. 2 is a perspective view showing the bumper attachment structure to the vacuum cleaner body, and FIG. 3 is a perspective view showing a part of the bumper. 11... Vacuum cleaner body, 12... Upper casing, 13... Lower casing, 12a, 13a...
...Matching edge, 15...Exhaust chamber, 16...Exhaust filter, 21...Bumper, 22...Upper fitting groove,
23...Lower fitting groove, 24...Communication port, 25...
Exhaust hole.

Claims (1)

[Scope of utility model registration request] A vacuum cleaner body having an exhaust chamber and an exhaust filter built into the exhaust chamber, and an inflatable rubber-like elastic material formed between the mating edges of an upper casing and a lower casing forming the vacuum cleaner body. A hollow bumper with an approximately H-shaped cross section is inserted between the bumpers, and the upper fitting groove of this bumper is fitted into the matching edge of the upper casing, and the lower fitting groove of the bumper is fitted into the matching edge of the lower casing. The interior of the bumper is connected to the exhaust chamber on the downstream side of the exhaust filter, and a large number of small exhaust holes are provided in the outer part of the bumper located on the outside of the vacuum cleaner body. A vacuum cleaner with special features.