JPH05111449A - Suction body of vacuum cleaner - Google Patents

Abstract

PURPOSE:To miniaturize the notion body and to allow it to suck efficiently dust by providing plural rotary brushes whose rotating directions are reverse and whose speeds of revolution are different in parallel to the floor surface by bringing them close to each other, and twisting and attaching a blade of the rotary brush to a rotary bar. CONSTITUTION:In a suction body maim body 1 connected to a cleaner main body by a connecting tube 8, a first rotary brush 20 driven to rotate by a motor 5, pulleys 4, 6 and a belt 7 is provided. A first rotary brush 20 is formed by a rotary bar 20a, a blade 20b, and a rotary shaft end 20c. In the vicinity of a first rotary brush 20, a second rotary brush 21 consisting of a rotary bar 21a, a blade 21b and a rotary shaft end 21c is attached in parallel to the floor surface. A first and a second rotary brushes 20, 21 are driven by the reverse rotating directions at the different speeds of revolution through gears 22a, 22b. Also, the blades 20b, 21b of a first and a second rotary brushes are twisted and attached to the rotary bars 20a, 21a. In such a way, the suction body main body 1. being small in size and having satisfactory dust suction efficiency is manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary brush provided on a suction body of an electric vacuum cleaner.

[0002]

2. Description of the Related Art FIG. 3 is a rear plan view of a suction body of a conventional vacuum cleaner in which a rotary brush is rotationally driven by an electric motor. In the figure, a suction port 2 is formed on the bottom surface of a suction body 1, and a rotary brush 3 is rotatably arranged facing the suction port 2. The rotating brush 3 is rotationally driven by an electric motor 5 arranged adjacent to the suction port 2 via a transmission mechanism including a pulley 6, a belt 7 and a pulley 4. Reference numeral 8 is a connecting pipe that communicates with the suction port 2 and is connected to a cleaner body (not shown). The conventional suction body is configured as described above. In cleaning, the rotary brush 3 is rotationally driven in either direction to scrape off and dust off the dust on the floor surface, and the dust that is knocked out is passed through the connecting pipe 8 together with the air sucked from the suction port 2. The vacuum cleaner body sucks.

By the way, in the suction body of the above vacuum cleaner,
When cleaning a carpet floor or the like, the rotating brush 3 may bite the ends or strings of the carpet, and the rotating brush 3 may become unrotatable and the electric motor 5 may also become unrotatable, which may burn the electric motor 5. In order to prevent such an accident, for example, in the suction body of the vacuum cleaner disclosed in JP-A-63-246124, the rotary brush 3 is vertically movable. That is, as shown in FIG.
The circuit chamber 9 that holds the bearings of the rotating shaft of the rotating brush 3 and electric parts is configured to move up and down along the guide 10 against the spring 11, and depending on the state of the floor surface, the rotating brush. 3 moves to the top. As a result, an unreasonable force does not act on the rotating brush 3, so that the rotating brush 3 cannot rotate and the electric motor 5 does not stop.

[0004]

However, in the conventional vacuum cleaner described above, the number of the rotary brushes 3 is one, regardless of the vertical movement of the rotary brushes 3, and therefore the suction body 1 of the vacuum cleaner is moved back and forth during cleaning. When moving to, the rotating direction of the rotating brush is always constant with respect to the moving direction. For this reason, there is a point that dust on the floor surface, particularly the carpet floor surface, is not necessarily sufficient to effectively scoop up dust and to collect it.

The present invention has been made in order to solve the above problems of the conventional electric vacuum cleaner, and it is an object of the present invention to provide a suction member of a vacuum cleaner which can effectively suck and collect dust. Is.

[0006]

In order to achieve the above object, in the suction body of the electric vacuum cleaner according to the present invention, a plurality of rotating brushes having different rotation directions and different rotation speeds are arranged parallel to the floor surface. The blade of the rotating brush is twisted and attached to the rotating rod.

[0007]

[Function] Since the suction member of the vacuum cleaner is configured as described above,
The plurality of rotating brushes are always rotating in opposite directions, and the number of rotations is different. Further, since the blade of the rotating brush is twisted and attached to the rotating rod, the blades do not interfere with each other even when the rotating brushes are arranged close to each other. As a result, dust on the carpet floor and the like is sufficiently scraped, beaten, and sucked together with air, as compared with the conventional suction body that always rotates only in the same direction. Further, by narrowing the interval between the rotating brushes, the size of the suction body can be reduced for performance.

[0008]

【Example】

Embodiment 1 FIG. 1 is a backside plan view of a suction body of an electric vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a side sectional view thereof, wherein 1 to 8 are the same parts as the conventional device, and 20 is a first part. 1 rotating brush, 20a its rotating rod, 20b its blade, 20c its rotating shaft, 21 a second rotating brush, 21a its rotating rod, 2
1b is its blade, 21c is its rotary shaft end, 22a,
22b is a gear, 23 is a gear case, and 24 is a bearing.
As shown in the figure, in the suction body according to the present invention, the first
The rotating brush 20 and the second rotating brush 21 are installed parallel to the floor surface, and one end of the first rotating brush 20 has a gear 22a.
Also, the rotary shaft end 20c is supported by a bearing 24 at the other end, which is connected to the electric motor 5 via the transmission mechanism. The second rotating brush has one end screwed into the gear 22a via the gear 22b, and the other end has the rotating shaft end 21c supported by the bearing 24.

The suction body of the vacuum cleaner according to the present invention is constructed in this way. Therefore, in the above suction body,
The first and second rotating brushes 20 and 21 include gears 22a and 22b.
Rotate in the opposite direction through. At this time, the gears 22a, 2
By changing the number of teeth of 2b, the first and second rotary brushes 20, 2
The number of rotations of 1 may be changed. Two of the two rotating brushes
The space between 0 and 21 is the blade 2 of the rotary brushes 20 and 21.
0b, 21b so close that they do not come into contact with the mating rotary rods 21a, 20a, and both blades 20b, 21b
blades 20b and 21b so that b does not interfere during rotation
Is twisted and attached to the rotary rods 20a and 21a.

In cleaning, since the rotating brush rotates in different directions, the speed at which the blade of the rotating brush comes into contact with the surface to be cleaned and the direction of stress are different, which is effective even for dust that cannot be cleaned in one direction. Is. For example, when there is a direction to fall of hairs on a carpet floor,
When the rotating brush rotates in one direction, it is difficult to suck dust accumulated between the brush feet, but when the brush rotates in both directions, the brush feet vibrate back and forth, which facilitates dust collection.

In this embodiment, the number of rotating brushes is two, but the number of rotating brushes is not limited to two, but may be three or more.

[0012]

According to the present invention, the suction body of the electric vacuum cleaner is provided with a plurality of rotating brushes having different rotation directions and different numbers of rotations, and the blades of the respective rotating brushes are twisted and attached to the rotating rods for rotation. Since the spacing between the brushes was reduced, the following excellent effects were obtained. (1) When cleaning the floor surface, the two rotating brushes rotate in opposite directions when the suction body is moved back and forth, so compared to a conventional rotating brush that rotates in the same direction, Scratching and tapping are effectively performed, and the dust collection effect is increased. (2) Since the two rotating brushes were brought close to each other when disposing the two rotating brushes, the size of the suction body became relatively small,
It has been decided to minimize the expansion of dimensions due to functional improvements.

[Brief description of drawings]

FIG. 1 is a rear plan view of a suction body of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a suction body of the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 3 is a backside plan view of a suction body of a conventional electric vacuum cleaner.

FIG. 4 is a side sectional view of a suction body of a conventional electric vacuum cleaner.

FIG. 5 is a side sectional view of a main part of a suction body of a conventional electric vacuum cleaner.

[Explanation of symbols]

 20 ... 1st rotary brush 20a ... 1st rotary brush rotary rod 20b ... 1st rotary brush blade 20c ... 1st rotary brush rotary shaft end 21 ... 2nd rotary brush 2a ... Rotating rod 21b of second rotating brush 21b ... Second rotating brush blade 21c ... Rotating shaft end 22a of second rotating brush 22a ... Gear 22b ... Gear 23 ... Gear case 24 ... Bearing

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[Procedure amendment]

[Submission date] December 6, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (1)

[Claims] 1. A suction body of an electric vacuum cleaner, wherein a plurality of rotating brushes having different rotating directions and rotating speeds are arranged parallel to a floor surface, and blades of the rotating brush are twisted and attached to a rotating rod. Vacuum cleaner suction body characterized by.