JPH0584179A - Sucking device of electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To inhibit the occurrence of a failure of seizure of a rotating brush bearing owing to the winding of hairs and dust onto the rotating brush of a sucking device in a sucking device provided with a rotating brush in a vacuum cleaner. CONSTITUTION:A rotating brush 7 of an electric vacuum cleaner is so constituted that an external diameter can be changed to incline the external periphery. With such construction, the force of the wind generated by a blade 9 at the rotation thereof is made smaller than the wind sucked from the sucking port 6 to facilitate sucking of dust from the inlet port, thereby inhibiting the winding of dust or hair onto the rotating brush.

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 equipped with a rotating brush effective for cleaning carpets and the like.

[0002]

2. Description of the Related Art In recent years, a suction tool for an electric vacuum cleaner, which effectively rotates a rotating brush to effectively clean a carpet or the like, has become popular. Hereinafter, the configuration of the conventional suction tool will be described with reference to FIGS. 4 to 7. As shown in the figure, the floor nozzle body 1 is composed of an upper floor member 2 and an underfloor member 3, and has a suction chamber 4 in the front part and a motor chamber 5 in the rear part. A rotatable brush main body 7 in the suction chamber 4
The rotary brush main body 7 is composed of a brush holder 8 and a blade 9 made of a flexible material, which is spirally attached in the longitudinal direction of the peripheral surface of the brush holder 8. A motor 13 is arranged in the motor chamber 5 in parallel with the rotating brush body 7. The suction chamber 4 and the motor chamber 5 are connected by a communication hole 14. A large pulley 10 is provided at the end of the rotary shaft of the rotary brush main body 7, and a small pulley 11 is provided at the end of the rotary shaft of the motor 13. Power transmission is performed between the large pulley 10 and the small pulley 11. The belt 12 as a means is stretched.

In the above construction, when the electric vacuum cleaner body (not shown) is operated, suction starts from the suction port 6, and when the rotary brush switch of the electric vacuum cleaner body (not shown) is turned on, the motor 13 starts rotating. , The rotational force of the motor 13 is transmitted in order of the small pulley 11, the belt 12, and the large pulley 10 to rotate the rotating brush main body 7.

[0004]

However, in such a conventional vacuum cleaner suction tool, as shown in FIG. 5, the rotating brush body 7 has the same C diameter dimension and D diameter dimension, and the rotating brush body 7 has the same diameter. 6, the rotating direction of the rotary brush main body 7 is the A direction, and the spiral direction of the blade 9 is the B direction, so that a wind flow in the E direction shown in FIG. 7 is generated in the suction chamber 4. . In the suction chamber 4, there are F and G wind flows that are generated by being sucked from the suction port 6, but when cleaning carpets, etc., they are adsorbed to the underfloor member 3, so the vacuum pressure in the suction chamber 4 increases and F , The wind speed of G slows down, the wind speed of E rises, the wind of F overlaps with the wind of E and guides the dust on the carpet to the suction port 6, and the wind of G is canceled by the wind of E and sucks the dust. If there is a long thin object such as hair in the dust without sticking to the mouth 6, it will wind in the same direction as the rotating brush main body 7, and if there is much winding, it will go inside the bearing and the bearing sticking phenomenon of the rotating brush main body 7 will occur. Occur.

The present invention is intended to solve the above problems, and an object thereof is to eliminate a failure due to seizure of a rotating brush.

[0006]

In order to achieve the above object, the first object of the present invention is to provide a rotary brush and a drive source for the rotary brush in a floor nozzle body. When the dimensions of both ends of the blade made of a material are changed and incorporated in the brush holder, the maximum diameter of both ends is made different in size so that the outer diameter is inclined.

A second means for solving the problem is to form the rotating brush so that the maximum diameter of both ends of the brush holder is different in size so that the outer diameter is inclined.

[0008]

According to the present invention, in the above-described structure, the maximum diameter of both ends including the blade of the rotating brush is made different in size to incline the outer shape, so that the wind speed generated by the rotating brush is reduced and hairs etc. are not easily entangled. Then, it is possible to eliminate the trouble due to the seizure of the rotating brush.

[0009]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
Will be described with reference to. The same members as those described in the conventional example are designated by the same reference numerals, and the description thereof will be omitted. The difference from the conventional example is that, as shown in FIG.
When the H dimension is made smaller than the dimension and is inclined to the H side, and is assembled to the brush holder 8, as shown in FIG.
From the C-diameter dimension on the a side of the rotating brush main body 7 shown in FIG.
It is made so that the diameter size gradually decreases.

(Embodiment 2) A blade 9 having the same I dimension and H dimension is formed by making the b side outer dimension smaller than the a side outer dimension of the brush holder 8 and gradually inclining the outer diameter from the a side. Even when is attached, the outer diameter including the assembling blade 9 is made to gradually decrease from the C diameter dimension on the a side to the D diameter dimension on the b side.

The operation of the above configuration will be described. When the rotary brush main body 7 is rotated, the rotary brush main body 7a side has a large diameter, and dust such as hair is guided to the suction port 6 by the wind generated by the blade 9, while the rotary brush main body 7b side has a small outer diameter. Therefore, the wind generated by the blade 7 is small, and the wind sucked from the outside of the floor nozzle main body 1 to the suction port 6 becomes effective, so that hair or the like can be promptly guided to the suction port 6.

[0012]

As is apparent from the above description of the embodiments,
According to the present invention, since the diameter is gradually reduced from the side a to the side b of the rotary brush main body, the wind flowing from the rotary brush main body does not obstruct the air flowing to the suction port, and the rotation is reduced. It is possible to provide a suction tool for an electric vacuum cleaner which can be used beautifully for a long time without dust such as hair wrapping around the part, is easy to maintain in daily use, and is easy to use.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a suction device according to an embodiment of the present invention as seen from above.

FIG. 2 is a plan view of the rotary brush main body of the suction device.

FIG. 3 is a plan view of the blade of the suction device.

FIG. 4 is a partially cutaway plan view of a conventional suction device as viewed from above.

FIG. 5 is a plan view of the rotary brush body.

FIG. 6 is a sectional view of the rotary brush body of FIG.

FIG. 7 is a plan view of a conventional suction device as viewed from below.

[Explanation of symbols]

 1 Floor nozzle body 7 Rotating brush body 8 Brush holder 9 Blade

Claims (2)

[Claims] 1. A rotary brush and a drive source for the rotary brush are internally provided in a floor nozzle main body, and when the blades made of a flexible material of the rotary brush are installed in a brush holder by changing the dimensions of both ends, the maximum diameter of both ends is increased. The suction tool for the electric vacuum cleaner, which has different outer diameters and has an inclined outer diameter. 2. A suction tool for an electric vacuum cleaner, which is formed by making a difference in size between the maximum diameters of both ends of a brush holder of a rotating brush so that the outer diameter is inclined.