JP3063473B2 - Vacuum cleaner suction tool - 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 device for a vacuum cleaner having a rotary brush effective for cleaning carpets and the like.

[0002]

2. Description of the Related Art In recent years, suction tools for vacuum cleaners for effectively cleaning carpets by forcibly rotating a rotary brush have become mainstream. For this reason, the rotating brush is generally provided with a cover for maintenance due to entanglement of hair, dust and the like.

Conventionally, this kind of suction tool is disclosed in Japanese Patent Application Laid-Open No. Hei 2-7923.
In general, a configuration as shown in Japanese Unexamined Patent Publication (Kokai) No. H10-209686 is known. More than 4 乃
This will be described with reference to FIG .

The suction tool main body 1 is composed of an upper outer member 2 and a lower outer member 3, and a suction chamber is provided in the suction tool main body 1.
You. The suction chamber, the motor over or driven by an air turbine (not shown) which is rotated by suction air, agitator (rotating brush) 6 for dust collecting dust carpet surface is provided. A cover 8 which is locked to the suction chamber by a knob 7 and is connected to the upper outer member 2 and covers the upper opening of the suction chamber.
Is provided. One end on the rear side of the cover 8
A rib 9 extending downward is provided at the center except for the cover
8 at the center of the upper outer member 2 which abuts one side.
A receiving part 10 for receiving the rib 9 and the receiving part 1 is provided.
0 as being outside air unusually tight such flow into the suction chamber by, but a recessed portion 12 which slides the knob 7 is provided in both end portions 11 of one side of the cover 8, the cover 8 and the upper shell by the knob 7 The member 2 is connected . in this way,
The cover 8 needs a recess 12 for sliding the knob.
Therefore, the receiving portion 10 is provided on the upper outer member 2 side corresponding to this portion.
Can not be formed, and leakage of suction air can be eliminated.
The configuration was not made .

[0005]

In the [0006] However more such conventional suction tool, the outer member 2 on which corresponding to both end portions 11 of the cover 8 does not get tight arrangement for stopping the flow of wind, The wind flows from the gap between the upper outer member 2 and the cover 8,
The pressure in the suction chamber 4 has decreased, and the efficiency of collecting dust from the suction port 13 has deteriorated. In addition, the wind noise generated by the inflow of the wind is often heard by the operator as an abnormal sound, which often leads to a complaint.

The present invention has been made to solve the above problems, and has a suction
It is an object of the present invention to provide a vacuum cleaner suction tool that prevents abnormal noise while maintaining performance .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a suction tool main body and a suction tool main body provided in the suction tool main body.
Suction chamber, and a rotary bra rotatably disposed in the suction chamber.
And the upper part of the suction chamber, and covers the suction tool body.
A cover detachably mounted, and the cover
A cover fixing knob to be held by the main body;
The fixing knob is provided on one side of the cover that comes into contact with the main body.
Forming a bag-shaped recess slidably disposed, and
On one side of the suction tool body and the cover, and
Ribs and receiving parts to ensure airtightness are
Form the suction side from the recess on one side of the cover
An extending portion extending to the rear side of the tool body, and extending from the recess.
And the suction tool main body is overlapped .

[0008]

According to the present invention, in the above construction, one side of the cover
Forming a bag-shaped recess in which the fixing knob is slidably arranged
With the suction tool body and one side of the cover.
Ribs to ensure airtightness
And a receiving portion, and the concave portion is formed on one side of the cover.
An extension extending from the front to the rear side of the suction tool body,
The extension part extending from the recess and the suction tool body overlap with each other.
So that the knob slides like the conventional
Since the tightness is improved so that the outside air is not sucked from the part, the efficiency of the pressure in the suction chamber is improved and the generation of abnormal noise can be prevented.

[0009]

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

As shown in the figure, the suction tool main body 1 is composed of an upper outer member 2 and a lower outer member 3, and a suction chamber is provided in the suction tool main body 1 . The suction chamber, the motor over also to the dust collecting dust driven carpet surface by an air turbine (not shown) which is rotated by suction air agitator (rotating brush)
6 are provided. The suction chamber is locked by a knob 7 and connected to the upper outer member 2 to open the upper opening of the suction chamber 4.
Cover 8 is provided to cover. Rear side of cover 8
The ribs 9 extending downward at the center of the side except the both ends 11
And the center of the upper outer member 2 abutting against one side of the cover 8
The part is provided with a receiving part 10 for receiving the rib 9.
The suction port 9 and the receiving portion 10 are tight so that outside air does not flow into the suction chamber . Both ends 1 of one side of the cover 8
1 is provided with a bag-shaped concave portion 12 for sliding the knob 7,
The cover 8 is attached to the upper outer member 2 with the knob 7. Ma
The recess 12 has a flange 14 extending rearward.
And the collar 14 overlaps the upper surface of the upper outer member 2 .
In this way, the airtightness is improved .

The operation of the above construction will be described.
When suction starts in the room due to the operation of the cleaner body (not shown), the pressure gradually increases, and dust starts to be collected together with the airflow from the suction port 13. At this time, the cover 8 comes into pressure contact with the upper outer member 2 as the pressure of the suction chamber increases. At that time, the boundary between the upper outer member 2 and the cover 8 (the rear of the cover 8)
The central portion of the side of one side), and tight wind flowing by reactive blanking 9 and the receiving unit 10, also both end portions 11 bag-shaped recess 12
The flange 14 extending rearward from the concave portion 12 toward the rear side of the upper outer member 2 tightly blocks the incoming wind. As described above, according to the embodiment of the present invention, all the boundary surfaces between the upper outer member 2 and the cover 8 are tight in the flow of the wind flowing from the upper side of the suction tool main body 1 from the outside air. all suction air by the force is to draw together inflow efficiently dust from the suction port 13 and dust. In addition, since the flow of the wind at the boundary surface is eliminated, abnormal noise such as wind noise does not occur.

[0012]

As is clear from the above description of the embodiment, according to the present invention, the knob provided on the cover is slid.
Since the extension for the suction tool main body is provided in the recess for
The space between the recess and the suction tool body can be airtightly mounted.
The present invention can provide a quiet suction device for a vacuum cleaner having a high dust collection efficiency with a high suction efficiency and a high efficiency of sucking dust and generating no abnormal noise due to suction air leaks.

[Brief description of the drawings]

FIG. 1 is a plan view according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of a central portion according to an embodiment of the present invention.

FIG. 3 is a sectional view of a main part according to an embodiment of the present invention.

FIG. 4 is a plan view of a conventional vacuum cleaner suction tool.

FIG. 5 is a cross-sectional view of the central part.

FIG. 6 is a sectional view of the main part.

[Description of Signs] 1 Suction tool main body 6 Agitator (rotary brush) 7 Knob 8 Cover 9 Rib 10 Receiving part 11 End part 12 Concave part 14 Collar (extended part )

Claims (1)

(57) [Claims] 1. A suction tool main body and a suction tool body provided inside the suction tool main body.
Suction chamber, and a rotary bra rotatably disposed in the suction chamber.
And the upper part of the suction chamber, and covers the suction tool body.
A cover detachably mounted, and the cover
A cover fixing knob to be held by the main body;
The fixing knob is provided on one side of the cover that comes into contact with the main body.
Forming a bag-shaped recess slidably disposed, and
On one side of the suction tool body and the cover, and
Ribs and receiving parts to ensure airtightness are
Form the suction side from the recess on one side of the cover
An extending portion extending to the rear side of the tool body, and extending from the recess.
A suction device for a vacuum cleaner , wherein an extending portion of the suction device overlaps with the suction device body .