JP3457553B2 - Suction port for 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 suction port body for an electric vacuum cleaner which sucks dust together with a suction airflow from a dust suction port by driving a vacuum cleaner body.

[0002]

2. Description of the Related Art A conventional suction inlet for an electric vacuum cleaner will be described with reference to the drawings. FIG. 5 shows a conventional suction port body 1 for an electric vacuum cleaner.
FIG. An outer shape of the suction port body 1 is formed by an upper case 2 and a lower case 3. A drive pipe 4 connected to a suction pipe 5 for connecting a long pipe (not shown) connected to an electric vacuum cleaner is sandwiched between an upper case 2 and a lower case 3, and the drive pipe 4 raises and lowers the long pipe. The corners are adjusted.

The lower case 3 has a dust suction port 1 facing the floor F.
4 is open. The dust is sucked from the dust suction port 14, travels in the fluid passage 9 along with the suction airflow in the direction of arrow B, and is collected by the vacuum cleaner body.
Wheels 7 that move the suction inlet body 1 by rotating while keeping the distance between the dust inlet 14 and the floor F constant before and after the dust inlet 14,
8 are provided.

A flexible member 13 having an auxiliary piece 16 and a sealing piece 13b is installed in front of the dust suction port 14. Auxiliary piece 1
Due to the frictional force between the floor 6 and the floor surface 6, the sealing piece 13b rotates backward when the suction port body 1 moves forward, and the front side of the dust suction port 14 is opened to facilitate the suction of large dust and dust near the wall. . When the suction port body 1 retracts, the sealing piece 13b rotates forward to close the front side of the dust suction port 14 to increase the degree of vacuum of the dust suction port 14 portion and improve the dust suction force. A brush 17 is provided behind the dust suction port 14 so that dust on the floor surface F is picked up and sucked from the dust suction port 14.

[0005]

However, according to the suction port body 1 as described above, when the surface to be cleaned is a carpet or the like, the effect of scraping cotton dust and hair entangled in the carpet or the like is small with the brush 17 alone. , Dust was left over. If a rotary brush is provided in the suction port body 1, the effect of scraping up dust such as carpet can be improved, but it becomes expensive and the tip of the rotary brush is separated by about 5 mm from the ground contact surface, so dust in the deep part of the carpet is There was a problem that I couldn't scrape enough.

It is an object of the present invention to provide a suction port body for an electric vacuum cleaner having a simple structure and having a large effect of scraping cotton dust, hair and the like entangled in a carpet or the like.

[0007]

In order to achieve the above object, the present invention provides a suction port body for an electric vacuum cleaner having a dust suction port for sucking dust, in a front portion of the suction port body for the electric vacuum cleaner ,
The auxiliary piece that comes into contact with the floor is provided rotatably via a support shaft, and includes a sealing piece that opens and closes the front of the dust suction port according to the forward and backward movement of the suction port body for the electric vacuum cleaner. Provide a plurality of protrusions on the surface of the dust suction side ,
If the sealing piece and the protrusion are integrally molded with a hard resin material,
In both cases, the auxiliary piece is formed of a soft material, and the support shaft is
And the auxiliary piece so that the auxiliary piece rotates integrally.
The auxiliary groove is provided on the support shaft and the engaging piece fits into it.
It is characterized by being provided on one side. The present invention
Is a suction port for a vacuum cleaner equipped with a dust suction port that absorbs dust.
In the body, touch the floor of the vacuum cleaner suction
Rotation via a support shaft that is inserted into the insertion hole of the auxiliary piece that contacts
Of the suction port body for electric vacuum cleaner
Equipped with a sealing piece that opens and closes the front of the dust suction port according to backward movement.
A plurality of protrusions on the surface of the sealing piece on the dust inlet side.
The auxiliary piece has a thin plate-shaped portion centered on the insertion hole.
Radially formed, the sealing piece and the protrusion are hard resin
Integral molding of the material and the auxiliary piece to a soft material
It is characterized by being formed.

According to this structure, when the sealing piece for opening and closing the front portion of the suction port body for the electric vacuum cleaner is closed according to the forward and backward movement of the suction port body for the electric vacuum cleaner, the projection is sucked by the suction port body for the electric vacuum cleaner. Dust is sucked from the dust suction port while scraping up cotton dust and hair that are entangled in the surface to be cleaned such as a carpet as the mouth moves.

Further, the present invention is characterized in that, in the suction port body for an electric vacuum cleaner having the above-mentioned structure , the projection is formed integrally with the sealing piece and has a substantially conical shape. According to this structure, when cotton dust, hair or the like entangled in the surface to be cleaned of the carpet or the like is scraped up by the substantially conical projection, it is separated from the projection by the suction force from the dust suction port and is sucked.

According to the present invention, in the suction port body for the electric vacuum cleaner having the above-mentioned structure, a plurality of rows of projections in which a plurality of the projections are arranged in the longitudinal direction of the sealing piece are provided, and the projections of the projections are arranged in two adjacent rows. The feature is that the position in the longitudinal direction is different. According to this configuration, when the sealing piece is closed, the protrusion scrapes cotton dust or hair entangled on the surface to be cleaned of the carpet or the like at different depths and at different horizontal positions to suck dust from the dust suction port. To do.

Further, the present invention is characterized in that, in the suction port body for an electric vacuum cleaner having the above-mentioned structure , at least a part of the projection is arranged near a lower end of the sealing piece. According to this structure, the protrusion scrapes up dust such as cotton dust and hair entangled in a deep portion of a carpet or the like into which the suction port body for the vacuum cleaner sinks, and sucks dust from the dust suction port.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. For convenience of explanation, the same members as those in FIG. 5 of the conventional example are designated by the same reference numerals. 1 and 2 are a side sectional view and a bottom view showing a suction port body for an electric vacuum cleaner according to an embodiment of the present invention. An outer shape of the suction port body 1 is formed by an upper case 2 and a lower case 3. A drive pipe 4 connected to a suction pipe 5 for connecting a long pipe (not shown) connected to an electric vacuum cleaner is sandwiched between an upper case 2 and a lower case 3, and the drive pipe 4 raises and lowers the long pipe. The corners are adjusted.

The lower case 3 has a dust suction port 1 facing the floor F.
4 is open. The dust is sucked from the dust suction port 14, travels in the fluid passage 9 along with the suction airflow in the direction of arrow B, and is collected by the vacuum cleaner body.
Wheels 7 that move the suction inlet body 1 by rotating while keeping the distance between the dust inlet 14 and the floor F constant before and after the dust inlet 14,
8 are provided.

A bumper 6 is provided in the front portion of the suction port body 1 so as to buffer the collision of the suction port body 1 with a wall surface or the like. Behind the dust suction port 14, a brush body 17 for scraping up dust tangled with a carpet or the like is provided. The flexible body 13 is installed in front of the dust suction port 14, and the auxiliary pieces 16 are attached to both ends of the flexible body 13 so as to be in contact with the floor surface F, so that the flexible body 13 is flexible in accordance with the forward and backward movement of the suction body 1. The body 13 is adapted to rotate.

FIG. 3 is an exploded perspective view showing details of the flexible body 13. Sealing pieces 13b are provided on the support shaft 13a so as to project, and insertion shafts 13e to be inserted into the insertion holes 16a of the auxiliary piece 16 are formed at both ends of the support shaft 13a. The sealing piece 13b is provided with a plurality of conical projections 13g, and two projection rows D and E are formed by the plurality of projections 13g arranged in the longitudinal direction of the sealing piece 13b. In addition, the support shaft 13a and the auxiliary piece 1
6 is engaged with the support shaft 1 so that the locking piece 13f rotates together with the support shaft 1.
Locking groove 16b provided in 3a and into which the locking piece 13f is fitted
Are provided on the auxiliary piece 16.

The auxiliary piece 16 includes three thin plate portions 16c, 1
6d and 16e are formed radially around the insertion hole 16a, and have a length capable of contacting the floor surface F. Also,
The support shaft 13a, the sealing piece 13b, and the protrusion 13g are integrally formed of a hard resin material such as ABS resin, polypropylene or polyethylene, and the auxiliary piece 16 is formed of a soft material such as hard rubber.

FIG. 4 is a detailed cross-sectional view showing the front portion of the suction port body 1, showing a state in which the flexible body 13 is attached. A substantially J-shaped curved plate 11 provided on the lower case 3.
And the support shaft 13 by the curved surface portion 10b of the detachable locking claw 10.
The groove portion 12 for holding a is configured, and the groove portion 12
The support shaft 13a of the flexible body 13 is inserted into the support member 13 and the locking claw 10 prevents the support shaft 13a from falling off. Also,
The rotation range α of the flexible body 13 is regulated by the sealing piece 13b coming into contact with the front stopper portion 10a provided on the locking claw 10 and the rear stopper portion 11a provided on the curved plate 11.

When the suction port body 1 is advanced, the sealing piece 13b is rotated rearward by the frictional force between the thin plate-like portions 16c and 16d of the auxiliary piece 16 which is in contact with the floor surface F and the floor surface F, and the rear stopper is provided. It contacts the portion 11a. At this time, the thin plate-shaped portion 16e contacts the floor surface F, and the front of the dust suction port 14 is opened to facilitate the suction of large dust and dust near the wall.

When the suction port 1 is retracted, it is rotated forward until the sealing piece 13b abuts on the front stopper portion 10a by the frictional force between the thin plate-like portions 16e and 16d abutting on the floor surface F and the floor surface F. To do. At this time, the thin plate-shaped portion 16c abuts on the floor surface F, and the front of the dust suction port 14 is closed to increase the degree of vacuum of the dust suction port 14 portion and improve the dust suction force.

When the surface to be cleaned is a carpet or the like, the wheels 7 and 8 sink into the carpet or the like, and the projection 13g has the suction port body 1.
With the receding, the cotton dust, hair and the like entangled in the carpet and the like are scraped up and sucked from the dust suction port 14. Therefore, the effect of easily scraping up the carpet or the like can be obtained, and the dust collection efficiency can be improved. At this time, since the protrusion 13g has a conical shape, the scraped cotton dust, hair, etc. are easily separated by the dust suction force to prevent entanglement.

As in this embodiment, the plurality of rows of protrusions D and E (see FIG. 3) can efficiently scrape up cotton dust, hair and the like of different depths on a carpet or the like. Then, when the position of the protrusion 13g in the protrusion row D in the longitudinal direction of the sealing piece 13b and the position of the protrusion 13g in the protrusion row E in the longitudinal direction are made different, the scraping interval becomes close and the dust collecting effect becomes large. Is desirable. 2 rows of protrusions
More than rows may be formed. Furthermore, by disposing the protrusion 13g near the lower end 13h (see FIG. 3) of the sealing piece 13b,
Since it is possible to scrape up to the deep part of the surface to be cleaned such as a carpet, the dust collection efficiency can be further improved.

[0022]

According to the present invention , the dust collection efficiency can be improved because cotton dust, hair, etc. entangled in a carpet or the like are scraped up and sucked with a simple structure.

Further, according to the present invention , since the protrusion is integrally formed with the sealing piece by molding or the like, the effect of scraping up cotton dust, hair, etc. entangled in the carpet without increasing the manufacturing cost can be obtained. You can Further, since the protrusion has a conical shape, it is possible to easily remove the scraped cotton dust, hair, and the like, and prevent entanglement of the cotton dust, hair, and the like.

Further, according to the present invention , it is possible to efficiently scrape cotton dust, hair and the like having different depths from a carpet and the like, and the scraping interval is narrowed to improve the dust collection efficiency.

Further, according to the present invention , since it is possible to scrape up to the deep portion of the surface to be cleaned such as a carpet, the dust collection efficiency can be further improved.

[Brief description of drawings]

FIG. 1 is a side sectional view of a suction port body for an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a bottom view of the suction port body for the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a flexible body of the suction port body for the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 4 is a detailed view of a main part of the suction port body for the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 5 is a side sectional view of a suction port body for an electric vacuum cleaner according to a conventional embodiment.

[Explanation of symbols]

1 Suction mouth 2 upper case 3 lower case 4 drive pipe 6 bumper 7, 8 wheels 13 Flexible body 13b Sealing piece 14 Dust suction port 16 Auxiliary piece

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Genji Kosaka 22-22 Nagaike-cho, Abeno-ku, Osaka City, Osaka Prefecture Sharp Corporation (56) Reference JP-A-7-163495 (JP, A) JP-A-3 -39128 (JP, A) JP-A-1-293828 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 9/02

Claims (5)

(57) [Claims] 1. A suction port body for an electric vacuum cleaner having a dust suction port for sucking dust, wherein an auxiliary piece abutting on a floor is rotated through a support shaft at a front portion of the suction port body for the electric vacuum cleaner. A sealing piece that is provided so as to open and close the front of the dust suction port in accordance with the forward and backward movement of the suction port body for the electric vacuum cleaner, and a plurality of protrusions are provided on the surface of the sealing piece on the dust suction port side , and the sealing is performed. One piece and the protrusion are integrally molded with hard resin material
And the auxiliary piece is formed of a soft material,
A locking piece so that the support shaft and the auxiliary piece rotate integrally.
Is provided on the support shaft, and the engaging groove into which the engaging piece is fitted
Is provided on the auxiliary piece . 2. An electric cleaning device having a dust suction port for sucking dust.
In the suction inlet for the machine, the front part of the suction inlet for the vacuum cleaner
The support shaft fitted into the insertion hole of the auxiliary piece that abuts on the floor
It is rotatably installed via the
Open and close the front of the dust suction port according to the forward and backward movement of the inlet body.
A surface of the sealing piece on the dust suction port side, which is provided with a sealing piece
A plurality of protrusions are provided on the
The sealing piece and the protrusion are formed radially around the hole.
Is integrally molded with a hard resin material and the auxiliary piece is softened.
Made of high quality material
Mouthpiece. 3. Also claim 1, characterized in that it has a substantially conical shape so as to form the projections integrally with the sealing piece
Is the suction port body for the electric vacuum cleaner according to claim 2 . 4. A plurality of rows of projections in which a plurality of the projections are arranged in the longitudinal direction of the sealing piece are provided, and the positions of the projections in the two adjacent rows are different from each other in the longitudinal direction. The suction port body for an electric vacuum cleaner according to any one of claims 1 to 3 . 5. A method according to claim 1 claims, characterized in that at least a portion of the protrusion arranged in the vicinity of the lower end of the sealing strip
4. A suction port body for an electric vacuum cleaner according to any one of 4 .