JPS6215011Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a vacuum cleaner having a rotating brush body, and an object of the present invention is to provide a simple and low-cost stopping structure for the rotating brush body.

Conventionally, this type of vacuum cleaner has an electric blower at the rear of the main body for suctioning dust and transmitting rotation to a rotating brush body, and a rotating brush body for scraping up dust at the front thereof.

A belt is stretched between them to transmit the rotation of the electric blower to the rotating brush body.

When cleaning the carpet surface, the rotating brush body rotates to scrape up the dust, and the electric blower's suction power
Dust is removed from the carpet surface. Furthermore, when cleaning floor surfaces such as tatami mats, it is necessary to stop the rotation of the rotating brush and remove dust using only the suction force of the electric blower.

A common method for this is to arrange two pulley parts of the rotating brush body, one of which is fixed to the rotating brush body, and the other is used as an idle pulley so that it can rotate freely with the rotating brush body. Something was warm.

When cleaning a carpet surface, the belt was moved to the fixed pulley side and the rotating brush was rotated, and when cleaning a floor surface, the belt was moved to the idle pulley side to stop the rotation of the rotating brush. .

However, this method requires a cam that also serves as a knob and a spring to keep the U-shaped lever belt on the fixed pulley and idle pulley sides for belt switching, making the structure complex and reducing the number of parts. In many cases, the cost was high.

The present invention solves the above-mentioned conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings. In the figure, 1 is the main body, with a flocked part that stirs up dust,
A rotating brush body 2 having a beater bar part is built in the front part.

3 is a pulley fixed to this rotating brush body 2;
4 is a brush shaft, and 5 is a bearing, which is attached to the main body 1. Reference numeral 6 denotes a hose having a suction port 7 provided at the rear of the rotating brush body 2, and 8 is a dust collection section provided tiltably at the rear of the main body 1, which incorporates an electric blower 9 for dust suction.

10 is a shaft protruding from one end of the electric blower 9;
Reference numeral 1 denotes a belt made of a stretchable material such as rubber, which is stretched between the shaft 10 and the pulley 3, and transmits the rotation of the electric blower 9 to the rotating brush body 2. A dust bag 12 for collecting dust is provided in the upper part of the dust collection part 8.
Built-in. This dust bag 12 is connected to the hose 7.
is connected to.

Reference numeral 13 denotes an operating handle fixed to the upper part of the dust storage section 8, and has a handle 14. 15 is a wheel for transportation;
Reference numeral 16 indicates a back plate of the main body, and reference numeral 17 indicates an exhaust hole provided at the rear of the dust collecting section 8.

In the above-mentioned vacuum cleaner, the dust scraped up by the rotating brush body 2 passes through the suction port 7 and the hose 6 by the suction force of the electric blower 9, and then passes through the dust collecting part 8.
The air enters the air, is collected in the dust bag 12, and only clean air is discharged to the outside through the exhaust hole 17.

Next, reference numeral 18 denotes a bearing, which rotatably holds the bearing part of the dust collecting part 8, and is fixed to the main body 1 with a tightening screw 19. A lever 20 has a flange portion 20a that rotatably fits around the outer periphery of the bearing 18.

21 is a rotatable roller, and a roller shaft 22
It is fixed to the lever 20 by.

This rotatable roller 21 is provided at a position facing the inner periphery of the belt 11 stretched between the shaft 10 and the pulley 3 of the rotating brush body 2.

20b is one end of the lever 20, and the flange portion 20
It is formed in a substantially L-shape with respect to a, and protrudes from the outer periphery of the main body 1.

1a is a long hole provided in the main body 1 for sliding a lever 20. This elongated hole 1a is provided with stepped portions 1b and 1c at both ends, respectively, in order to hold the lever 20 in a fixed position.

In the above state, the electric blower 9 rotates around the axis 1.
0. It is transmitted to the rotating brush body 2 via the belt 11, and is used for cleaning the carpet surface.

When cleaning the floor such as folding, one end 20b of the lever 20 is rotated from A to B in the direction of the arrow in FIG. The belt 1 is attached to the rotating roller 21 as it rotates.
One end 20b of the lever 20 is in contact with the other end 20b of the lever 20.
When the belt 11 rotates completely to B, the inner surface of the belt 11 is completely separated from the shaft 10 as shown in FIG. 5, and the electric blower 9 is rotating, but the rotating brush body 2 is not rotating. When the electric blower 9 stops, the floor surface can be cleaned only by the suction force of the electric blower 9.

Also, switch from the floor surface to the carpet surface using lever 2.
This can be easily done by returning 0 to the A position.

As described above, the present invention enables the rotating brush to be turned on and off by rotating the lever and extending and contracting the belt, allowing for accurate cleaning that quickly responds to the conditions of the surface to be cleaned. Become. In particular, in the present invention, the belt is expanded and contracted via a lever, and thereby the belt is brought into contact with and separated from the shaft of the drive source.
The structure is simpler than the one with two pulleys, and in addition, in the past, the brushing area of the rotating brush was reduced by the width of two pulleys, but with the present invention, only one pulley is used. The brushing action area can be increased accordingly. Therefore, efficient cleaning is possible.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, FIG. 3 is an enlarged sectional view of main parts, and FIGS. 4 and 5 are explanatory diagrams of the operation. DESCRIPTION OF SYMBOLS 1... Main body, 2... Rotating brush body, 9... Drive source (electric blower), 11... Belt, 20... Lever, 21... Roller.

Claims (1)

[Scope of utility model registration request] It is equipped with an elastic belt stretched between the pulley of the rotating brush and the shaft of the drive source, and a lever whose midway part is supported concentrically with the shaft, with one end of the lever extending outward from the main body. A vacuum cleaner with a roller positioned between the belt between the shaft and the pulley at the other end.