JPH0520280Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a vacuum cleaner in which a dust collection bag is attached and detached through an upper opening of a dust suction chamber.

BACKGROUND ART A conventional vacuum cleaner of this type will be described with reference to the drawings.

4, 5, and 6, reference numeral 1 indicates the bottom of the main body, which has an upward-opening dust suction chamber 2 on the front side and a fan motor 4 for dust suction in the rear chamber separated by a partition wall 3. . A handle portion 5 is integrally formed on the upper front end of the lower main body 1, a moving roller 6 is attached to the rear portion, and a caster roller 7 is attached to the bottom surface.

The fan motor 4 has its front wall supported by a partition wall 3 and its rear side by a rib 10 which is raised from the bottom 1 of the main body through supports 8 and 9 made of an elastic material such as rubber.

The upper opening of the fan motor 4 has its rear end hooked to the protrusion 11 of the lower main body 1, and the front end of the upper opening of the fan motor 4 that is integrally connected to the lower main body 1 with screws.
2, and an operation button 13 is attached to the top 12 of the main body for automatically winding up the cord in conjunction with a cord reel unit (not shown). Reference numeral 14 denotes a front cover which is fitted in a hole with a boss 15 protruded from the bottom 1 of the main body, and whose upper end is integrally fixed with screws. This front cover 14 has a connection hole 16 for connecting a hose, and a tight packing 17 made of an elastic material such as rubber and having an opening communicating with the connection hole 16 is pressed and held between it and the lower body 1. There is. Also, a check valve 17a is provided inside the tight packing.
18 is a lid that covers the upper opening of the dust suction chamber 2,
A rear protrusion 20 is fitted into a hole 19 provided on the upper part 12 of the main body, and a buckle part 21 is provided on the front side in the lower part 1 of the main body.
by engaging an elastic pawl (not shown) with the
It is detachably attached to the lower part of the main body. 22
is a dust collection bag that functions as a filter to capture dust, and has a mouth frame 23 made of cardboard.
A circular hole 24 is provided in the center.

Reference numeral 25 denotes a gasket press-fitted into the entire circumference of the upper end surface of the lower body 1, 26 a gasket integrally held at the front end of the upper body 12, and the structure is such that airtightness is maintained by the lid 18. .

Problems to be Solved by the Invention In such a conventional vacuum cleaner, the opening frame 23 of the dust collection bag 22 is attached to the cylindrical tight packing 17, and the lower part of the opening frame 23 is connected to the lower part 1 of the main body, and the upper It is secured and attached with a bag opening holder. Therefore, the mouth frame 23 is deformed into an arc shape, and the tight packing 1
7, but as the mouth frame 23 deforms into an arc shape, the hole 24 deforms into a horizontally long ellipse.
There was a problem in that two gaps were generated between the tight packing 17 and the cylindrical part on the left and right, which caused dust leakage.

This invention solves these problems,
The purpose is to provide a vacuum cleaner with improved usability and operability.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a dust collection chamber with a lid that can be opened and closed above, and a dust collection chamber that is attached to the dust collection chamber by locking the top and bottom of the mouth frame. A dust bag, a tight packing made of an elastic material such as rubber provided on the wall of the dust collection chamber corresponding to the hole provided in the opening frame of this dust collection bag, and a hole diameter of the opening frame provided in this tight packing. a cylindrical part with a compression allowance equal to or slightly larger than that; a disc-shaped tight part provided on the outer periphery of the cylindrical part that abuts the front surface of the mouth frame; It is provided with check portions provided at the lower four parts so as to be openable and closable, and the left and right check valves are formed to have higher rigidity than the upper and lower check valves.

Function The present invention has the above-mentioned configuration, so when a hose connection pipe is inserted into the inner diameter of the cylindrical part, the upper and lower check valves deform into an arc shape along the shape of the pipe, but the left and right check valves with high rigidity deform. is difficult to deform, so the cylindrical part of the tight packing is pushed outward to the left and right. As a result, the cylindrical portion has a horizontally elongated elliptical shape that is almost the same as the hole in the mouth frame, ensuring tightness of dirt.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1, 2, and 3, reference numeral 31 has a dust suction chamber 32 with an upward opening on the front side, and a fan motor 34 for sucking dust in the rear chamber separated by a partition wall 33.
This is the bottom of the main body with each. This main body bottom 31
A handle portion 35 is integrally formed at the upper front end of the handle, a moving roller 36 is attached to the rear portion, and a caster roller 37 is attached to the bottom surface.

The fan motor 34 is supported at its front wall by the partition wall 33 through supports 38 and 39 made of an elastic material such as rubber, and by a rib 40 raised from the bottom 31 of the main body at its rear side.

The upper opening of the fan motor 34 has its rear part hooked to the protrusion 41 of the lower body 31, and its front side covered by the upper body 42 which is integrally connected to the lower body 1 by tightening screws. On this main body top 42 is an operation button 4 for automatically winding up the cord in conjunction with a cord reel unit (not shown).
3 is installed. Reference numeral 44 denotes a front cover which is fitted in a hole with a boss 45 raised from the bottom of the main body 31 and whose upper end is integrally fixed with screws.

This front cover 44 has a connection hole 46 for connecting a hose, and a tight packing 47 made of an elastic material such as rubber and having an opening communicating with the connection hole 46 is pressed and held between it and the lower body 1. There is.

The tight packing 47 includes a base portion 47a held between the main body, a cylindrical portion 47b that is tight in diameter dimension, a disk-shaped tight portion 47c that is tight in the surface, and a cylindrical portion 47.
The inside of b includes a check valve 47d and a reinforcing rib 47e at the base of the check valve 47d.

Reference numeral 48 is a lid that covers the upper opening of the dust suction chamber 32, and a rear protrusion 5 is inserted into a hole 49 provided on the upper part of the main body
0, and is removably attached to the main body 31 by engaging an elastic pawl (not shown) with a buckle 51 provided on the lower part 31 of the main body on the front side. A dust bag 52 serves as a filter for capturing dust, and is integrally formed with a mouth frame 53 made of cardboard or the like by adhesive or the like. The lid 48 has a built-in display mechanism 55 that indicates when the dust collection bag 52 is full of dust using a pointer 54. In addition, the mouth frame 53
A rib 57 is provided with a stepped portion 56 that engages with the upper end of the dust collection bag 52 to position and fix the dust collection bag 52. The ribs 57 protrude downward from the lower surface of the outer periphery of the lid 40. Reference numeral 58 denotes a gasket press-fitted into the entire circumference of the upper end surface of the lower main body 31, and 59 represents a gasket integrally held at the front end of the upper main body 42, and the structure is such that airtightness is maintained by the lid 48. . A suction hole 60 is provided in the partition wall 33 of the dust suction chamber 32.
A frame body 62 is provided with a built-in secondary filter 61 made of non-woven fabric, etc., and is provided with ribs to prevent the dust collection bag 52 from coming into close contact with the dust collection bag 52, and is detachably attached by engaging with a claw. There is. Also, the dust suction chamber 32
A rib 64 having a holding portion 63 for positioning the lower end of the mouth frame 53 is installed at the bottom of the mouth frame 53. 64
This is a bag opening holder that temporarily fixes the upper part of the opening frame 53.

In the above configuration, the dust sucked by the fan motor 34 through the hose passes through the front cover 44 and the tight packing 47 and is collected in the dust collection bag 52, and only clean air is discharged from the exhaust hole.

To attach the dust collection bag 52 to the dust collection chamber 32, as shown in FIG.
First, tilt the mouth frame 53 to the position shown by the dashed line.
The lower end of is positioned on the holding part 63, and rotated in the direction of arrow A about the positioning part as a fulcrum.

The dust collection bag 52 can now be installed in the dust suction chamber 32 using the opening frame 53. The rib 5 also has a stepped portion 56 for positioning and fixing the upper end of the mouth frame 53 to the lid 48.
7, the lid 48 is placed on the bottom 31 of the main body.
With the opening frame 53 attached, the mouth frame 53 is positioned and fixed by the holding part 63 and the stepped part 56 of the rib 57,
Thereby, the dust collection bag 62 is reliably held in the dust suction chamber 32.

At this time, since the mouth frame 53 is deformed into an arc shape, the circular opening of the mouth frame 53 is deformed into a horizontally elongated ellipse.

Further, the tight packing 47 is attached by sandwiching the base portion 47a between the lower body 31 and the front cover 44, and tightens the cylindrical portion 47b with the hole diameter of the mouth frame 53.
The tight portion 47c is tightly connected to the front surface of the mouth frame 53.

Further, check valves 47d are provided inside the cylindrical portion 47b, and reinforcing ribs 47e are provided at the bases of the check valves 47d only on the left and right check valves 47d.

When the hose connection pipe is inserted into the tight packing 47, the upper and lower check valves 47d are pushed apart along the hose connection pipe, and the left and right check valves 47d provided with reinforcing ribs 47e are deformed along the outer periphery of the hose connection pipe. This increases the amount by which the diameter of the cylindrical portion 47b is expanded, resulting in a horizontally elongated elliptical shape that is close to the same shape as the mouth frame 53. improves.

Furthermore, by providing the reinforcing rib 47e, a difference occurs in the return speed of the check valve 47d.
At the same time, it is possible to prevent abnormal noises such as chatter from the check valve 47d.

In this embodiment, the stiffness of the left and right check valves is increased by providing reinforcing ribs 47e, but it is possible to increase the thickness of the check valves without separately providing reinforcing ribs, or to change the material. It goes without saying that the same action and effect can be achieved even if the rigidity is increased by other means.

Effects of the Invention As is clear from the embodiments described above, according to the present invention, a check valve that opens and closes in four directions, right and left, and up and down, is provided inside the cylindrical part provided in the tight packing. Since the rigidity of the stop valve is made higher than that of a check valve that opens and closes in the vertical direction, the left and right diameters of the cylindrical part that fits into the mouth frame are expanded due to the deformation of the check valve when the hose connection pipe is inserted. , the vacuum cleaner has improved tightness with the hole in the mouth frame, and the check valve structure can be formed from a single member, so the structure is simple and the tightness effect is fully demonstrated, and the vacuum cleaner has improved usability and operability. It is possible to provide

[Brief explanation of drawings]

Figures 1A and B are plan views of a tight packing for a vacuum cleaner showing an embodiment of the present invention, Figure 1C is a sectional view of the same tight packing, and Figure 1D is A of Figure 1B.
-A sectional view, Figure 1E is a BB sectional view of Figure 1B, Figure 1F is a CC sectional view of Figure 1B, and Figure 2 is a sectional view of the same vacuum cleaner. Figure 3 is an enlarged cross-sectional view of the main parts of the same vacuum cleaner, Figure 4 is a cross-sectional view of a conventional vacuum cleaner, Figure 5 is an enlarged view of the main parts of the same vacuum cleaner, and Figure 6 is an enlarged view of the main parts of the same vacuum cleaner. It is a sectional view of a tight packing. 32...dust collection chamber, 47...tight packing, 4
7a...Base part, 47d...Cylindrical part, 47c...
Tight portion, 47d... Check valve, 47e... Reinforcement rib, 52... Dust collection bag, 53... Mouth frame.

Claims (1)

[Scope of claim for utility model registration] (1) A dust collection chamber with a lid that can be opened and closed above, a dust collection bag that is attached to the dust collection chamber by locking the top and bottom of the mouth frame, and this dust collection bag. A tight packing made of an elastic material such as rubber is provided on the wall of the dust collection chamber corresponding to the hole provided in the opening frame, and a compression allowance equal to or slightly equal to the hole diameter of the opening frame provided in this tight packing a rounded cylindrical part, a disc-shaped tight part provided on the outer periphery of the cylindrical part that abuts the front surface of the mouth frame, and a left side inside the cylindrical part.
A vacuum cleaner is provided with check valves that can be opened and closed at each of the right, top, and bottom parts, and the check valves located on the left and right sides have higher rigidity than the check valves located on the top and bottom. . (2) The vacuum cleaner according to claim 1, wherein the thickness of the check valves located in the left and right direction is thicker than the thickness of the check valves located above and below. (3) The vacuum cleaner according to claim 1, which has a reinforcing rib at the base of each of the left and right check valves.