JP3205222B2 - 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, and more particularly to a vacuum cleaner having a check valve in a suction path.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
A suction port body 2 attached to the vacuum cleaner main body 1, a dust collection chamber 3 for storing dust sucked from the suction port body 2, and a suction path provided between the suction port body 2 and the dust collection chamber 3 are provided. A hand-held type vacuum cleaner having a check valve 4 is also known.

As shown in FIGS. 8A and 8B, the check valve 4 has a ring-shaped main body 4a, a circular opening 4b formed by the main body 4a, and a plurality of opening / closing openings 4b. Are integrally formed from an elastic body such as rubber.

The elastic wall pieces 4c, 4c...
), And intersects with the suction airflow (indicated by the arrow in FIG. 8B). By always standing up and closing the opening 4b, backflow of dust in the dust collecting filter 5 is prevented.

When an electric blower (not shown) provided in the vacuum cleaner main body 1 is driven, a suction airflow from the suction opening body 2 to the dust collection chamber 3 is generated. The elastic wall pieces 4c in the upright state shown in FIG.
As shown in FIG. 7B, the base 4c is tilted toward the dust collection chamber 3 with the base thereof as a hinge to open the opening 4b, and the dust sucked in from the suction opening body 2 side is used for the dust collection chamber 3 It is collected in the dust collection filter 5 provided inside.

[0006]

By the way, in the vacuum cleaner constructed as described above, the elastic wall pieces 4c, 4c
.., Especially in the case of the above-mentioned handy type, in which the suction port faces downward, the dust in the dust collection chamber 3 easily reverses, so that it is necessary to reliably prevent the tilting toward the suction port body 2. is there. On the other hand, by facilitating the tilting toward the dust collection chamber 3 due to the generation of the suction airflow, the burden on the electric blower can be reduced and the suction efficiency can be ensured.

However, the elastic wall piece 4 having the above-described structure is used.
In the configuration such as c, 4c, etc., it is difficult to incline toward the suction port body 2 by making the wall thickness thick,
The ease of tilting toward the dust collection chamber 3 is sacrificed, the load on the electric blower is large, and not only the suction efficiency is low, but also the tilting toward the suction port body 2 cannot be completely prevented. There was a problem.

The present invention has been made in view of the above circumstances, and can prevent the elastic wall piece from tilting to the atmosphere side, and furthermore, can easily tilt the elastic wall piece toward the dust collection chamber. An object is to provide a vacuum cleaner that can be secured.

[0009]

Means for Solving the Problems In order to achieve the object, an invention according to claim 1 is provided with a dust collecting chamber formed in a vacuum cleaner main body for storing dust sucked from the atmosphere, and a vacuum chamber. It is provided in the suction path with the dust collection chamber, always shuts off the suction path and tilts toward the dust collection chamber side along with the generation of the suction air flow to allow the dust to pass therethrough. A check valve having intersecting elastic wall pieces;
Formed on the air-side surface of the elastic wall piece and starting from the base of the elastic wall piece.
A linear projection extending toward an end, a stopper abutting on the atmosphere side with a base of the linear projection to prevent the elastic wall piece from tilting to the atmosphere side, and the elastic wall piece moving toward the dust collection chamber side. And tilt
When the suction airflow and dust in the moving state are
Extension of the linear projection so as to guide toward the center of the opening of the
The gist of the present invention is to include a guide provided on a line .

[0010]

[0011]

According to the structure of the first aspect,
A dust collection chamber for storing dust sucked from the atmosphere is formed inside the main body of the vacuum cleaner, always shuts off the suction path between the atmosphere and the dust collection chamber and tilts toward the dust collection chamber with the generation of suction airflow. A check valve having an elastic wall piece that intersects the flow direction of the suction air flow so as to allow dust to pass therethrough is provided in the suction path, and a linear projection extending from the base of the elastic wall piece toward the tip thereof has an elastic wall piece. A state in which the elastic wall piece is tilted toward the dust collection chamber by the stopper formed on the atmosphere-side surface and abutting on the base side of the linear projection on the atmosphere side to prevent the elastic wall piece from tilting toward the atmosphere .
The suction airflow and dust at the time of
Guide to guide Ru provided extending line of the linear protrusions.

[0012]

[0013]

Next, an embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS.

(First Embodiment) FIGS. 1 to 3 show a first embodiment of a vacuum cleaner according to the present invention. In FIG. 3, the vacuum cleaner C includes a vacuum cleaner main body 10 and a vacuum cleaner main body 1.
And a suction port body 20 with a brush removably mounted in a mounting hole 11 formed in the lower surface near the front end of the zero.

The vacuum cleaner main body 10 is divided into left and right parts, and the right and left covers 1 fixed together by screws 12, 12,...
Upper cover 15, left and right cover 1, detachably or rotatably mounted on the upper part of left and right covers 13, 14
A cylindrical body 16 having a mounting hole 11 held by the cooperation of 3, 14 is provided.

Each of the covers 13, 14, and 15 forms a dust collecting chamber 17 and an electric blower chamber (both not shown) for accommodating the electric blower therein, and a dust collecting filter located in the dust collecting chamber 17. Hold 18. Also, the upper cover 15
Is detached or attached when the dust collecting filter 18 is replaced.

The cylindrical body 15 is held by the left and right covers 13 and 14 in a state where the cylindrical body 15 is inclined to the front low and rear high, and a check valve 19 is fitted to a rear portion thereof.

As shown in FIGS. 2A and 2B, the check valve 19 has a main body 19a, a circular opening 19b formed by the main body 19a, and a fan-shaped opening / closing opening 19b. The plurality of elastic wall pieces 19c are integrally formed from an elastic body such as rubber.

The main body 19a has an outer peripheral groove 19e fitted to the left and right cases 13 and 14, and an inner peripheral groove 19f fitted to the rear end 15a of the cylindrical body 15.

The elastic wall pieces 19c are divided into six equal parts and intersect with the suction airflow (indicated by the arrow in FIG. 2B). A linear projection 1 extending from the base of the elastic wall piece 19c toward the tip is provided on the surface of the elastic wall piece 19c on the atmosphere side.
9d, 19d... Are integrally formed. Elastic wall piece 19
As shown in FIG. 1 (A), c, 19c... always stand up and close the opening 19b to prevent the backflow of dust in the dust collecting filter 18, and accompanying the driving of the electric blower. When the suction airflow is generated, as shown in FIG. 1B, the elastic wall piece 19c is tilted toward the dust collection chamber 17 with the base portion as a hinge portion 19g.

When the whole of the elastic wall piece 19c is made thinner, the linear projection 19d is caused by the suction airflow.
Serves as a reinforcement for tilting as a whole. Also,
An inclined guide 19h is formed on the linear projection 19d at the base end of the elastic wall piece 19c.

The guide 19h guides the suction airflow and dust toward the center of the opening 19b when the elastic wall piece 19c is tilted toward the dust collecting chamber 17, and is thus sucked. Lint and the like do not become entangled with the linear projection 19d.

On the other hand, at the rear end 15a of the cylindrical body 15, a stopper 15b in an inclined state which contacts the guide 19h when the elastic wall piece 19c is in the upright state and prevents the elastic wall piece 19c from tilting toward the atmosphere. Are formed.

In the above configuration, the vacuum cleaner main body 10
When the electric blower provided inside is driven, the suction port 2
0, a suction airflow is generated toward the dust collection chamber 17, and the generation of the suction airflow causes the elastic wall piece 19c in an upright state to move.
The opening 19b is opened by tilting the hinge portion 19g toward the dust collecting chamber 17 side, and the dust sucked from the suction opening body 20 side is collected by the dust collecting filter 18 provided in the dust collecting chamber 17.

At this time, the hinge 19g is connected to the guide 19h.
Comes into contact with the stopper 15b on the atmosphere side, and the elastic wall piece 19c
Can be made thinner than the conventional hinge part 4d, and the thinner hinge part 19g allows the elastic wall piece 19c to move toward the dust collecting chamber 17 side.
Tilting is easy.

On the other hand, when the driving of the electric blower is stopped and the elastic wall piece 19c is in an upright state, as described above, the guide 19h abuts on the stopper 15b on the atmosphere side and the elastic wall piece 19c Is prevented, dust and the like contained in the dust collecting filter 18 do not go back to the atmosphere side than the check valve 19.

(Second Embodiment) FIGS. 4A and 4B show a second embodiment of the present invention. In the first embodiment, the stopper 15b is formed integrally with the cylindrical body 15. FIG. On the other hand, in the second embodiment, the check valve 29 is formed integrally.

The check valve 29 includes a main body 29a, a circular opening 29b formed by the main body 29a, and a plurality of fan-shaped elastic wall pieces 29c, 29 which open and close the opening 29b.
are integrally formed from an elastic body such as rubber.

The main body portion 29a is formed with an outer peripheral groove 29e to be fitted to the left and right cases 13 and 14, and an inner peripheral groove 29f to be fitted to the rear end 25a of the cylindrical body 25.

The elastic wall pieces 29c are divided into six equal parts and intersect with the suction air flow. Also, the elastic wall piece 29
Linear projections 29d, 29d,... extending from the base of the elastic wall piece 29c toward the tip are integrally formed on the surface on the atmosphere side of c. Further, the elastic wall pieces 29c, 29c... Normally stand up and close the opening 29b as shown in FIG. 4A, and when the suction airflow is generated with the driving of the electric blower, as shown in FIG. As shown in FIG.
As g, the elastic wall piece 29c tilts toward the dust collection chamber 17 side.

When the whole of the elastic wall piece 29c is made thinner, the linear protrusion 29d is caused by the suction airflow.
Serves as a reinforcement for tilting as a whole. Also,
An inclined guide 29h is formed on the linear projection 29d at the base end of the elastic wall piece 29c.

The guide 29h guides the suction airflow and dust toward the center of the opening 29b when the elastic wall piece 29c is tilted toward the dust collection chamber 17, and is thereby sucked. Lint and the like do not become entangled with the linear projection 29d.

On the other hand, an annular portion 29i projecting toward the atmosphere is formed integrally with the main body portion 29a.
i is the guide 2 when the elastic wall piece 29c is in the upright state.
A stopper 29j is formed to be opposed to the elastic wall piece 29c and to prevent the elastic wall piece 29c from tilting toward the atmosphere by contacting the stopper 9h.

In such a configuration, not only the same operation and effect as in the above embodiment can be achieved, but also, by forming the guide 29h and the stopper 29j integrally with the check valve 29, the relative position between the two can be obtained. There is an effect that the positional relationship can be accurately opposed. Note that an overall view of the check valve 29 is omitted.

(Third Embodiment) FIGS. 5 and 6 show a third embodiment of the present invention. In each of the above embodiments, guides 19h and 29 are used.
h is molded into the check valves 19 and 29,
In the third embodiment, it is provided on a cylindrical body 35.

The check valve 39 includes a main body 39a and a main body 3
9a, a circular opening 39b formed by
a plurality of fan-shaped elastic wall pieces 39c, 39c for opening and closing b.
Are integrally formed from an elastic body such as rubber.

The main body 39a has an outer peripheral groove 39e fitted to the left and right cases 13 and 14, and an inner peripheral groove 39f fitted to the rear end 25a of the cylindrical body 25.

The elastic wall pieces 39c are divided into six equal parts and intersect with the suction air flow. Also, the elastic wall pieces 39
Linear projections 39d, 39d,... extending from the base of the elastic wall piece 39c toward the tip are integrally formed on the surface on the atmosphere side of c. Further, the elastic wall pieces 39c, 39c... Normally stand up and close the opening 39b as shown in FIG. 5A, and when the suction airflow is generated with the driving of the electric blower, as shown in FIG. As shown in FIG.
As g, the elastic wall piece 39c tilts toward the dust collection chamber 17 side.

When the entire wall portion 39c is made thinner, the linear protrusion 39d is caused by the suction airflow.
Serves as a reinforcement for tilting as a whole. Also,
At the rear end 35a of the cylinder 35, the elastic wall piece 39c faces the atmosphere side.
Abuts on the base-side end face of the linear projection 39c to prevent tilting
A stopper 35b is formed.

In addition, even with such a configuration,
The same operation and effect as the embodiment can be obtained. In addition, the cylindrical body 3
5 and the general view of the check valve 39 are omitted.

On the other hand, the inner wall surface near the rear end 35a of the cylindrical body 35
At 35c, the elastic wall piece 39c tilts toward the dust collection chamber 17 side.
The suction airflow and dust in the open state in the opening 39b.
A guide 35d is provided for guiding toward the heart.

This guide 35d is shown in FIGS. 6A and 6B.
As shown in the figure, it is located on the extension line of the linear projection 39d.
Thus, it is provided on the inner wall surface 35b of the cylindrical body 35. Follow
The elastic wall piece 39c is tilted toward the dust collection chamber 17 side.
Guide 35d toward the center of the opening 39b
To prevent the lint, etc., guided by entanglement with the linear projection 39d
Is done.

[0043]

As described above, in the vacuum cleaner of the present invention, the stopper which contacts the elastic wall piece on the atmosphere side is provided to prevent the elastic wall piece from tilting to the atmosphere side. In addition, it is possible to easily secure the elastic wall piece to tilt toward the dust collection chamber.

A guide is provided on the extension of the linear projection to guide the suction airflow and dust toward the opening center of the check valve when the elastic wall piece is tilted toward the dust collection chamber. As a result, entanglement of lint or the like with the linear projection is prevented.

[Brief description of the drawings]

FIG. 1 shows a vacuum cleaner according to the present invention, wherein (A) is a cross-sectional view of a main part in a backflow preventing state, and (B) is a cross-sectional view of a main part in a dust suction state.

FIG. 2A is a front view of a check valve, and FIG. 2B is a longitudinal sectional view of the check valve.

FIG. 3 is a side view of the vacuum cleaner with a part cut away.

FIG. 4 shows a second embodiment of the vacuum cleaner of the present invention,
(A) is a cross-sectional view of a main part in a backflow prevention state, and (B) is a cross-sectional view of a main part in a dust suction state.

FIG. 5 shows a third embodiment of the vacuum cleaner of the present invention,
(A) is a cross-sectional view of a main part in a backflow prevention state, and (B) is a cross-sectional view of a main part in a dust suction state.

6A is an explanatory view of a main part in a backflow prevention state showing a relationship between a linear projection and a guide, and FIG. 6B is a main part in a dust suction state showing a relation between the linear projection and a guide. FIG.

7A and 7B show a conventional vacuum cleaner, wherein FIG. 7A is a cross-sectional view of a main part in a backflow preventing state, and FIG. 7B is a cross-sectional view of a main part in a dust suction state.

FIG. 8A is a front view of a check valve, and FIG. 8B is a longitudinal sectional view of the check valve.

FIG. 9 is a side view of the vacuum cleaner with a part cut away.

[Explanation of symbols]

 C: Vacuum cleaner 10: Vacuum cleaner body 15: Cylindrical body 15b: Stopper 17: Dust collection chamber 19: Check valve 19c: Elastic wall piece 19h: Guide

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-285078 (JP, A) JP-A-63-30940 (JP, U) JP-B-61-3483 (JP, B2) JP-B-61-8 2520 (JP, Y2) 5-20280 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/10

Claims (1)

(57) [Claims] 1. A dust collection chamber formed in a vacuum cleaner main body and containing dust sucked from the atmosphere side, and provided in a suction path between the atmosphere and the dust collection chamber. a check valve having a resilient wall piece which crosses the flow direction of the suction air stream so cut off to and with the generation of the suction airflow passing dust tilts in the dust collecting chamber side, the air side of the elastic wall piece And said elastic wall piece
A linear projection extending toward the tip end from the base of the linear collision in order to prevent tilting of the air side of the elastic wall piece
And the stopper abuts at raising the base and the atmosphere side, the capital of a state where the elastic wall piece is tilted into the dust collecting chamber side
The suction airflow and dust toward the opening center of the check valve.
A guide provided on the extension of the linear projection for guiding
Vacuum cleaner, characterized in that it comprises the id.