JPS596025A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a vacuum cleaner having a rotating brush built into a floor nozzle.

Structure of a conventional example and its problems FIG. 1 shows the driving part of a rotating brush in a conventional vacuum cleaner of this type. Part of the bottom plate 4
It is designed to protrude from a suction port 6 formed in the. 6 is a part of a pulley provided on a part of the rotating brush 1, and 7 is a belt for transmitting the rotational force of a drive source such as a motor to the rotating brush 1, and is stretched around the pulley part 6. 8 is sandwiched between inner and outer ribs 9 and 10 protruding from the floor nozzle body 2 and the bottom plate 4, with a pulley portion 6 interposed therebetween as a backing that abuts on the circumferential surface of the rotating brush 1.

The backing 8 prevents dust scraped up into the floor nozzle main body 2 by the rotating brush 1 from entering the pulley part 6, and prevents dust from entering the pulley part 6.
This is to ensure that the rotation is transmitted to the

Incidentally, the rotating brush is used to raise the dust on the surface to be cleaned, such as a carpet, thereby increasing the dust suction efficiency of the floor nozzle, and for this purpose, it is desirable that the brush body be installed along its entire length. However, in the case where there is a part of the pulley in the middle of the rotating brush, the brush body is not present not only by the width of the part of the pulley but also by the thickness of the backing. There is also a part B without a brush, which has the disadvantage that the dust suction performance is correspondingly poor.

Purpose of the Invention The present invention eliminates these conventional drawbacks, and aims to improve the dust suction performance by reducing the non-brush portion of the rotating brush as much as possible, and also prevents dust from entering a part of the pulley. This was definitely prevented.

Structure of the Invention The present invention is a device in which a flexible backing that rotates together with a part of the pulley is attached to the side of a part of a pulley provided on a rotating brush, and a belt cover is provided in circumference of this backing. By displacing the backing into contact with the belt cover by the suction force within the nozzle, it is ensured that part of the pulley is dust-tight.

Description of examples Examples thereof will be described below with reference to the accompanying drawings.

Figures 2 to 4 show an example applied to an applied vacuum cleaner, in which 11 is a floor nozzle with a built-in rotating brush 12, 13 is a fan motor 14, and a dust collector (not shown) is installed on the suction side of the floor nozzle. It is mainly a vacuum cleaner with a built-in function. The floor nozzle 11 has a step-shaped rear end extending to both sides of the cleaner body 130, and is rotatably connected to the cleaner body 13 via shafts 15 and 16. 17
18 is a handle, and 18 is a hose that guides the dust-containing air flowing from the floor nozzle 11 to the dust collecting section of the main body 13 of the cleaner.

Note that the dust-containing air that has reached the dust collection section is filtered here, and only clean air passes through the fan motor 14 and is discharged from a predetermined exhaust port.

Reference numeral 19 indicates a moving roller, and reference numeral 2o indicates a rotating shaft of the fan motor 4, which passes through one shaft 15 and has its tip inserted into the inside of the nozzle 1.

By the way, the above-mentioned rotating brush 12 is constructed by installing a brush body 21 in a spiral direction on the circumferential surface, and both ends are connected to supports 22.
It is rotatably attached to a shaft 23 supported by. 24
2 is a rotating brush working chamber, 25 is a bottom plate, and the rotating brush 12 is inserted through a suction port 26 formed corresponding to the rotating brush working chamber 24.
A part of the brush body 2 is made to protrude. 27 is a part of a pulley formed in the middle of the rotating brush 12; 28 is an intermediate transmission part disposed between the rotating shaft 2o of the fan motor 4 and the pulley part 27, and the first pulley 2° engaged with the clutch; 9 and a second pulley 30.

31 is a first belt stretched between the rotating shaft 2o and the first pulley 29; 32 is the second pulley 30 and the rotating brush 12;
．． This is a second belt stretched between the pulley part 27 of the belt.

That is, the rotational force of the fan motor 4 is transmitted from the rotating shaft 2o to the first belt 31 to the first pulley 29 to the clutch to the second pulley 30 to the second belt 32 to the pulley part 27. is driven to rotate. Furthermore, when the clutch is released, the first gooley 29 idles, and the rotational force of the rotating brush 12 is stopped.

Now, 33 is the goo IJ part 2 in the rotating brush 12.
It is made of a flexible material such as felt and has an elliptic disk-shaped backing fixed to both sides of the holder. A belt cover 34 is provided so as to circumscribe this backing 33.

In the above configuration, the backing 33 is connected to the rotating brush 12.
Even if it is made of a flexible material, it will continue to maintain its disc shape due to centrifugal force as it rotates together with the disc. Since the rotating brush working chamber 24 facing the rotating brush 12 is subjected to the suction force of the fan motor 4, the backing 33 receives a displacement force in the direction of the belt cover 34 due to the suction force, and the backing 33 receives a displacement force in the direction of the belt cover 34. This is to ensure that the dust is in contact with the dust and to make the dust tight between them perfect.

In this way, the backing 33 rotates simultaneously with the rotary brush 12 and comes into contact with the belt cover 34 by suction force, so the thickness of the backing can be made smaller than in the past. can be made shorter.

In the above embodiment, the fan motor of the vacuum cleaner is used as the driving source for the rotating brush, but of course a motor for driving the rotating brush may be provided in the floor nozzle, and the intermediate transmission mechanism may be omitted depending on the case. Conceivable.

Effects of the Invention As is clear from the above embodiments, the present invention circumscribes the belt case to a flexible backing that rotates together with the rotating brush, which not only makes it possible to use a thin backing, but also enables the use of thinner backings. There is no need to provide holding members on both sides, and therefore, the non-brush portion of the rotating brush can be reduced to that extent, thereby improving dust absorption characteristics. In particular, in the present invention, since the backing is brought into close contact with the belt case by the action of the suction force, the dust-tight property of that part is significantly improved, and it is possible to reliably prevent the adverse effects of dust entering a part of the pulley.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional rotary brush drive unit, Fig. 2 is a perspective view of a vacuum cleaner showing an embodiment of the present invention, Fig. 3 is a cross-sectional view of the floor nozzle unit, and Fig. 4 is a vertical sectional view of the same. It is a front view. 11... Floor nozzle, 12... Rotating brush, 13... Vacuum cleaner main body, 14... Drive source (fan motor), 27...・Part of the pulley,
32...Belt, 33...Backing, 34...Belt cover. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 figure

Claims (1)

[Claims] The main body of the vacuum cleaner is equipped with a fan motor, the floor nozzle is connected to the suction side of the main body of the vacuum cleaner, and has a built-in rotating brush; A vacuum cleaner comprising: a belt for transmitting power to a rotating brush; a flexible backing that is provided on the side of a portion of the pulley and rotates together with the pulley; and an integrated belt cover that circumscribes the backing. .