JPH04312428A - Filter unit fitting device for vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent the leakage of dust by securing the airtightness between a check valve provided at a connection port for the connecting pipe of a cleaner main body and a port core via a dust collecting bag with the port core. CONSTITUTION:A circular section 43 is provided on a check valve 40, the circular section 43 is coupled with the opening 41 of a port core 36 when a connecting pipe 42 is inserted into a hose connection port 38, thus airtightness is secured.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter unit mounting structure for a vacuum cleaner.

0002

[Prior Art] Conventionally, this type of mounting structure was
The one disclosed in Japanese Patent No. 189055 was common. This configuration will be explained with reference to FIG. In other words, the dust collection bag 1 is attached to the holding part 3 formed on the bottom of the dust suction chamber 2.
This is done by inserting the mouth frame 4 and using it as a rotation fulcrum, and rotating the upper end in the direction of the arrow. At this time, the guide 6 of the tight packing 5 fits into the opening 7 of the mouth frame, and the tight part 8 formed on the outer periphery
is in contact with the mouth frame 4 to prevent the dust inside the dust collection bag 1 from leaking.

The invention disclosed in Japanese Utility Model Publication No. 63-27657 will be explained with reference to FIG. Suction port 11 of the vacuum cleaner body
A rubber sealing 13 is provided inside so as to be slightly in contact with the suction pipe 12 at its inner diameter, and a tapered portion 14 is formed on its inner surface. 15 is a dust collection bag inserted into the dust collection chamber 16, and the hole 18 of the mouth core 17 is connected to the rubber seal 13.
It is attached so that it is in contact with the outer diameter of the In this configuration, when the suction pipe 12 is connected to the suction port 11, the suction pipe 1
2 pushes out the inner surface of the rubber sealing 13, and the outer peripheral surface of the rubber sealing 13 is pressed against the hole 18 of the mouth core 17.
This prevents the dust in the dust collection bag 15 from leaking.

0004

[Problem to be solved by the invention] However, in 1983-
In the device disclosed in Japanese Patent No. 189055, when the mouth frame 4 is attached to the main body, if the center of the mouth frame 4 and the tight packing 5 is misaligned, the mouth frame 4 is pushed by the guide 6 and is warped rearward, causing the tight packing to become distorted. The tightness between the packing 5 and the opening frame 4 becomes incomplete, and dust leaks from the dust collection bag 1. Therefore, there was a drawback that the mouth frame 4 had to be attached carefully. In particular, since the mouth frame 4 is made of cardboard for economic reasons, it may be warped and deformed before it is installed, and in this case, even more careful installation is required.

Furthermore, in the device disclosed in Japanese Utility Model Publication No. 63-27657, when the suction pipe 12 is connected, the insertion force becomes high because it exceeds the frictional resistance when the rubber sealing 13 is pushed out and inserted. When removing the suction pipe 12,
Since the rubber sealing 13 and the suction pipe 12 are in close contact with each other, the frictional force is even higher, and this has the disadvantage of usability in that it cannot be easily removed.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a vacuum cleaner filter unit mounting structure that is highly usable and inexpensive.

[0007]

[Means for Solving the Problems] The technical means of the present invention to solve the above problems includes a dust collection bag that accumulates collected dust inside, and a dust collection bag that is firmly attached and inserted into the main body. A filter unit consisting of a mouth core that is attached to the body, a hose connection pipe that is detachably connected to the main body, a connection port that connects the connection pipe formed on the main body, and a filter unit that is arranged between the connection port and the mouth core. a check valve, the check valve forming a thin ring portion that is fitted into the mouth core and pressed against the mouth core when the connecting pipe is connected to the connection port; The front part of the annular part is formed so that it does not touch the outer peripheral surface of the connecting pipe.

[0008]

[Operation] The above means works by forming a thin ring part in the check valve that fits into the mouth core and presses against the mouth core when the connecting pipe is connected to the connection port. In this condition, the annular part and the mouth core are securely tight, preventing dust from leaking inside the dust collection bag, and when replacing the filter unit, the ring part and the mouth core can be easily fitted. The filter unit can be easily replaced.

Further, by the second means, a space is formed between the check valve and the connecting pipe in front of the annular portion, so that the connecting pipe can be easily attached and detached.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, the main body 21 of the vacuum cleaner
is a filter unit 23 that filters and accumulates dust sucked in through the floor suction device, extension pipe, and hose 22 in front.
It has a dust collection chamber 24 that accommodates the
It has a power chamber 26 containing a cord winding device and the like. An upper lid 27 is attached above the dust collection chamber 24 to cover the dust collection chamber 24 so as to be openable and closable. The upper lid 27 has a rear part that engages with the upper main body 28, a front part that is attached to the main body 21 by a buckle 29, and a recessed part 30 formed in the center to display a dust collection amount display device 31. installed.

The filter unit 23 includes a dust collection bag 32 for accumulating dust, and is fixed to the dust collection bag 32, and is connected to the dust collection chamber 2.
4, a mounting groove 34 formed below the front wall 33 of the main body 21 and a holder 35 rotatably mounted above the front wall 33.
It is composed of a mouth core 36 attached in between.

The front lid 37 is fixed to the main body 21, and is integrally provided with a hose connection port 38 approximately at the center thereof. The hose connection port 38 and the front wall 33 sandwich a check valve 40 that is fitted into a circular opening 39 formed in the front wall 33 opposite to the hose connection port 38 . The check valve 40 is fitted into an opening 41 formed in the mouth core 36 facing the dust collection chamber 24, and is connected to a connecting pipe 42 of the hose 22.
When connected to the hose connection port 38, the connection pipe 42 has an annular portion 43 with a wall thickness of about 1.5 mm that is pushed out in the radial direction at the tip and pressed into contact with the opening 41.

Next, the operation and effect of the above configuration will be explained. When attaching the filter unit 23 to the main body 21, insert the lower end of the mouth core 36 into the mounting groove 34, rotate the upper end side from the power chamber 26 side toward the front wall 33, and hook the upper end onto the holder 35 to set it. . At this time, mouth core 3
The annular portion 43 of the check valve 40 fits loosely into the opening 41 of the check valve 6 . At this time, even if the mouth core 36 and the check valve 40 are slightly misaligned, the opening 41 will not be caught by the annular portion 43, so the filter unit 23 can be easily set.

Next, in order to use the vacuum cleaner, when connecting the connecting pipe 42 to the hose connecting port 38, the connecting pipe 42
The annular portion 43 having a thin tip is pushed out in the radial direction, and the outer peripheral surface of the annular portion 43 is pressed against the inner periphery of the opening 41 of the mouth core 36, so that the inside of the dust collection bag 32 and the dust collection chamber 24 are separated. Check valve 4
0, the dust accumulated in the dust collection chamber 24 will not leak out from the opening 41. At this time, the insertion force of the connecting pipe 42 is such that the insertion force of the connecting pipe 42 is
3, it is small and easy to connect. Furthermore, even if the mouth core 36 is warped or deformed before being installed, or even if the opening 41 and the check valve 40 are misaligned, the annular portion 43 is thin and will not fit along the opening 41. As a result of deformation and maintaining the pressure-contact state, the dust tightness becomes complete, and the dust in the dust collection bag 32 will not leak.

Next, when the dust collection bag 32 is full of dust and the filter unit 23 is replaced with a new one,
The operation described above may be performed in reverse. At this time, the connection pipe 42 and the check valve 40 are in contact only at the annular portion 43, and since the annular portion 43 exerts a restoring force to reduce the diameter, the connection pipe 42 can be easily removed. be able to. Also, when replacing the filter unit 23, use the connecting pipe 4.
Since the pressure contact state between the annular portion 43 and the opening 41 due to 2 is released, it can be done smoothly without getting caught.

Furthermore, the above structure and operation can be provided at low cost because it is sufficient to provide the check valve 40 with the annular portion 43 and to prevent the front portion from coming into contact with the connecting pipe 42.

[0018]

[Effects of the Invention] As explained above, the present invention has a filter unit consisting of a dust collection bag for accumulating dust, a mouth core that is inserted into the main body with the dust collection bag fixedly attached, and a filter unit that can be freely attached to and removed from the main body. A hose connection pipe connected to the body, a connection port formed on the main body for connecting the connection pipe, and a check valve disposed between the connection port and the mouth core, and the check valve has a By forming a thin-walled annular portion that presses against the mouth core when the connecting pipe is connected to the connecting port, the connecting pipe can be easily inserted with a small insertion force during use, making it easy to use. In this state, the annular portion and the mouth core are tightly sealed to prevent leakage of the dust accumulated in the dust collection bag.

[0019] Also, when replacing the filter unit,
The hose can be removed with a small force, and the fit between the annular portion and the mouth core is loosened, making it very easy to attach and detach the filter unit.

[0020] Furthermore, the above effects can be obtained with an inexpensive structure, and usability is improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a filter unit attachment part of a vacuum cleaner, showing one embodiment of the present invention.

[Figure 2] Cross-sectional view of the vacuum cleaner

[Fig. 3] A cross-sectional view of the filter unit attachment part when a connecting pipe is connected, showing one embodiment of the present invention.

[Figure 4] Cross-sectional view of the dust collection bag attachment part showing a conventional example

[Fig. 5] Cross-sectional view of the dust collection bag attachment part showing another conventional example

[Explanation of symbols]

21 Main body 23 Filter unit 24 Dust collection room 32 Dust collection bag 33 Front wall 36 Mouth core 37 Front lid 38 Hose connection port 40 Check valve 41 Opening 42 Connection pipe 43 Annular part

Claims (2)

[Claims] Claim 1: A filter unit consisting of a dust collection bag that accumulates collected dust therein, a mouthpiece that is inserted into the main body with the dust collection bag fixedly attached, and the filter unit is removably connected to the main body. It comprises a hose connection pipe, a connection port formed on the main body for connecting the connection pipe, and a check valve disposed between the connection port and the mouth core, the check valve being fitted into the mouth core, A filter unit mounting device for a vacuum cleaner, comprising a thin-walled annular portion that is pressed into contact when a connecting pipe is connected to a connecting port. 2. The filter unit mounting device for a vacuum cleaner according to claim 1, wherein the front part of the annular portion is formed with an inner circumferential diameter that does not touch the outer circumferential surface of the connecting pipe.