JP3298125B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having an exhaust port integrally provided behind a motor chamber of a main case in which a motor is mounted.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, in a case where an exhaust port 3 is disposed on a rear wall surface 2 of a main body case 1 and a filter 4 is provided in front of the exhaust port 3, the exhaust port 3 does Partition walls 6 and 7 are disposed so as to cover the outer periphery of the front surface of the filter 4 from the main case 1 and the upper body 5 so as not to generate exhaust wind to be exhausted, or the motor chamber 9 of the main case 8 as shown in FIG. A partition 10 having an exhaust passage is provided at the rear and a partition 12 provided on an upper body 11 provided so as to cover the motor chamber 9 from above. A vertical surface is formed, and a filter 13 for collecting dust is provided behind the partition. Vacuum cleaners in which an exhaust port lid 14 having an exhaust port provided on the front surface is generally used.

[0003]

However, in the filter holding structure as shown in FIG. 4, the wall forming the exhaust port is inclined in order to provide the draft of the mold, so that it is provided on the front surface of the wall. There is an angle between the partition wall that covers the outer periphery of the filter and the wall surface that has the exhaust port, making it impossible to evenly apply the partition wall to the outer periphery of the front surface of the filter, and temporarily providing a plurality of ribs that make the wall surface perpendicular to the wall surface Even if it is difficult, it is difficult to assemble such that the partition wall, which is provided on the upper body that covers the main body case from above, and covers the outer periphery of the front surface of the filter uniformly hits the front of the soft filter.

[0005] Further, in the case where an exhaust port lid provided with a filter is provided at the rear of a partition having an exhaust passage constituted by a main case and an upper body shown in FIG. 5, a main case is provided for holding and fixing the exhaust port lid. It is necessary to provide a holding structure for the vacuum cleaner, etc., so that the overall length of the vacuum cleaner main body becomes longer and the weight becomes heavy, which is contrary to the small size and light weight demanded in recent years.

[0005] Therefore, the present invention is to bend the upper surface of the filter provided on the front surface of the exhaust port or arrange an impermeable packing so that the filter is held by the rib provided on the upper body so that the exhaust air can pass through the filter reliably. It is the purpose.

[0006]

In order to achieve the above object, the present invention provides a dust collecting chamber at the front and a motor at the rear.
On the rear wall behind the motor room of the main case with
An exhaust port for exhausting exhaust air from the heater is provided, and the rear wall is
A wall whose upper part is inclined backward so as to secure the mold draft.
And the inclined rear wall described above on the motor room side of the exhaust port
So that the front edge becomes a substantially vertical surface
Ribs are provided to cover the front and top surfaces of the aforementioned plurality of ribs.
A filter that collects dust with a substantially L-shaped cross section
Substantially parallel to the front edges of the plurality of ribs,
Provide a bulkhead in the main case to hold both sides of the front
Provided on the upper body that is arranged to cover the case from above.
The folded upper part of the above filter with the holding rib
Are clamped from above .

A dust collection chamber is provided at the front and a motor chamber is provided at the rear.
On the rear wall behind the motor room of the main case equipped with
The exhaust wall for exhausting the exhaust air is provided.
A wall with the upper part inclined backward to secure a draft angle
In addition, on the motor room side of the exhaust port,
Multiple ribs so that the front edge is substantially vertical
To catch dust so as to cover the front surfaces of the aforementioned ribs.
Collecting filter, the upper end surface of the rib and the filter
Make the upper end surface almost flush with the upper end surface of the filter.
Air-permeable packing is arranged to cover the upper surface of the valve from above
And hold the packing with the holding ribs provided on the upper body
It is something to do.

[0008]

The operation of the above technical means is as follows.

A filter for collecting dust is arranged in front of a plurality of ribs provided on the inner wall of the rear wall surface which is formed to be inclined rearward of the main case, and the upper part of the plurality of ribs is bendable above the filter. The front and top surfaces of the filter can be covered, so that the dust collection area of the filter can be increased.In addition, there is no need to cover the front of the filter with a partition provided in the upper body that covers the main case from above. It does not deform and exhaust air is discharged without passing through the filter.

In addition, an air-impermeable packing is disposed on the upper surface of the filter so as to cover the upper surfaces of the plurality of ribs provided on the rear wall surface of the main case, so that the exhaust air does not leak from the upper end surface of the filter. It can prevent a decrease in dust performance and an increase in noise value.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 and 2 , reference numeral 15 denotes a motor chamber 1 having a dust collecting chamber 16 at the front and a motor 17 at the rear.
8 is a main case. A rear wall 19 whose upper part is inclined in the direction of arrow A is formed at the rear of the main case 15 to provide a mold draft.
An exhaust port 20 for exhausting the exhaust air exhausted from 7 is provided.

A plurality of ribs 21 are provided on the inner surface of the rear wall surface 19 constituting the exhaust port 20 so that the front surface is substantially vertical.
Is provided, and a filter 22 for collecting dust is disposed on the front surface thereof. Partition wall 23 outer circumferential surface of the bottom surface and both side surfaces of the filter 22 is provided integrally with the main case 15
, The exhaust air surely passes through the filter 22.

Further, a heat-welded portion 24 is formed above the filter 22 so as to make the filter 22 bendable. The filter 22 has a substantially L-shaped cross section so as to cover the front and upper surfaces of the rib 21 described above. It comes into contact. The upper surface of the filter 22, which is bent into a substantially L-shaped cross section, is held by a holding rib 26 provided on an upper body 25 that covers the main case 15 from above.

As shown in FIG. 3, a rear wall 28 similar to the above is provided at the rear of the main case 27 at an angle, an exhaust port 29 is provided on the rear wall 28, and a plurality of ribs 30 are provided on the inner wall. A filter 31 is provided on the front surface of the rib 30, the upper end surface of the filter 31 and the upper surface of the rib 30 are substantially flush with each other, and an impermeable packing 32 is disposed on the upper surface, and the packing 32 is attached to the upper body. 33
Are clamped by holding ribs 34 provided in the above.

In the above configuration, the filters 22 and 3
1 will be described. As shown in FIG. 1, the filter 22 is inserted between the rib 21 provided on the inclined rear wall surface 19 of the main case 15 and the partition wall 23 in the direction of arrow B, and bends the heat-welded portion 24 formed on the upper portion of the filter 22. It is bent in the direction of arrow C as a point and comes into contact with the upper surface of the rib 21 described above. The filter 22 mounted in this manner is sandwiched between the holding ribs 26 provided on the upper body 25, so that the bottom surface and the outer peripheral portions on both side surfaces of the filter 22 are exhausted by the filter 23 through the partition wall 23.
2 so that it passes without leaking from the outside, and the upper surface of the filter 22 is securely pressed down without bending due to ribs even when the upper body 25 is incorporated by bending the filter 22. Dust can be trapped against the exhaust air passing in the direction of arrow D, and the dust collecting area of the filter 22 can be increased, so that the ventilation pressure loss is reduced and the suction force can be improved.

Further, since the exhaust port 20 can be formed on the rear wall 19 formed by the inclined surface by using the rib 21 and the bending of the filter 22, the filter 22 does not need to be formed by a separate component such as the exhaust port cover. It can reduce the size and weight of the vacuum cleaner main body.

Further, as shown in FIG. 3, the upper end surface of the filter 31 and the upper surface of the rib 30 are flush with each other, and an air-impermeable packing 32 is arranged from the upper surface to apply a process such as heat welding to the filter 31. Filter 31 without
It is possible to prevent the exhaust gas from being diverted from the upper surface and to prevent an increase in noise value due to the direct discharge of the exhaust air.

[0018]

As described above, according to the present invention, a plurality of ribs provided on the rear wall composed of the inclined surface behind the main case and the filter in contact with the ribs are made freely bendable, and an impermeable packing is provided on the upper surface of the filter. The following effects can be obtained by providing them.

(1) The filter is arranged vertically to the inclined exhaust port, but the upper surface of the filter is bent and pressed by a rib, or an impermeable packing is disposed on the upper surface and pressed by the rib. By assembling a soft filter, it is possible to assemble it in a state that is not visible when assembling, so that the filter surface can reliably contact the ribs etc., preventing reduction of dust collection efficiency and increase of noise value due to leakage from the side of exhaust wind You can do it.

(2) Since the upper and lower surfaces of the filter are bent and the vertical and bent surfaces of the filter also function as a dust collecting filter, the dust collecting area can be increased and the exhaust pressure loss can be reduced.

(3) The filter mounting structure is bent or an impermeable packing is used to prevent leakage of the exhaust gas, so that the filter front surface is formed by a partition having the same wall and the filter is held behind the filter. Since it is not necessary to form the vacuum cleaner, it is possible to reduce the size and weight of the vacuum cleaner main body.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view of a vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the vacuum cleaner showing one embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a vacuum cleaner showing one embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a vacuum cleaner showing a conventional example.

FIG. 5 is a longitudinal sectional view of a vacuum cleaner showing a conventional example.

[Explanation of symbols]

 15 Main Case 16 Dust Collection Room 17 Motor 18 Motor Room 19 Rear Wall 20 Exhaust Port 21 Rib 22 Filter 24 Heat Welding Part 25 Upper Body 26 Holding Rib 30 Rib 31 Filter 32 Packing 33 Upper Body 34 Holding Rib

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Nakamoto 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-62-111035 (JP, A) 62056 (JP, U) Japanese Utility Model Showa 62-148255 (JP, U) Japanese Utility Model Showa 58-177060 (JP, U) Japanese Utility Model Utility Model 53-27407 (JP, Y2) (58) Fields investigated (Int. ⁷ , DB name) A47L 9/10 A47L 9/00

Claims (2)

(57) [Claims] An exhaust port for discharging exhaust air of a motor is provided on a rear wall behind a motor chamber of a main case having a dust collecting chamber at a front portion and a motor chamber at a rear portion, and the rear wall surface has a mold draft. The upper surface is inclined rearward so as to secure
One from the wall after the above-mentioned slope on a motor chamber side of the exhaust port
Setting the ribs several such forward edge to the body is substantially vertical surface
Only, provision of a filter for trapping a substantially L-shaped dust so as to cover the front and top surfaces of the plurality of ribs described above, the plurality of
It is substantially parallel to the front edge of the rib and
A vacuum cleaner having a structure in which a partition wall for pressing the side is provided in the main case, and the bent upper portion of the filter is held from above by a holding rib provided on an upper body arranged so as to cover the main case from above. . 2. An exhaust port for discharging exhaust air of a motor is provided on a rear wall behind a motor chamber of a main case having a dust collecting chamber at a front part and a motor chamber at a rear part, and the rear wall has a mold draft. The upper surface is inclined rearward so as to secure
One from the wall after the above-mentioned slope on a motor chamber side of the exhaust port
Setting the ribs several such forward edge to the body is substantially vertical surface
Only, to collect the dust so as to cover the front surfaces of the plurality of ribs described above
A filter is provided , and an air-impermeable packing is disposed so that the upper end surface of the rib and the upper end surface of the filter are substantially flush with each other and the upper end surface of the filter and the upper surface of the rib are covered from above.
Vacuum cleaner that holds the packing with the holding ribs provided on the upper body.