JPH07327885A - Rotating brush for floor nozzle - Google Patents

Abstract

PURPOSE:To prevent both erroneous operation of a microprocessor built in a cleaner and electric shocks to cleaning people by reducing electric static charges developing on a rotating brush. CONSTITUTION:A rotating brush 1 comprises a columnar brush holder 2, a dust collecting brush 3 with hair transplanted on the perimeter of the brush holder 2 and a discharging brush 4 with hair also transplanted on the perimeter of the brush holder 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary brush for a floor nozzle of a vacuum cleaner or the like, and more particularly to removing static electricity generated by the rotary brush.

[0002]

2. Description of the Related Art The structure of a conventional floor nozzle rotary brush is as follows.
Generally, there are a flocked type in which a nylon brush is driven into a brush holder, and a blade type in which a groove is provided spirally in the brush holder and an elastic blade is incorporated in the groove.

In any case, static electricity is generated due to friction with the carpet or the like, especially when cleaning the floor surface of the carpet or the like. In recent years, the vacuum cleaner itself has a built-in micro computer, which has created an environment in which the micro computer is prone to malfunction during discharge of static electricity, and the person who is cleaning is vulnerable to electric shock. In particular, like a self-propelled vacuum cleaner powered by batteries or an electric vacuum cleaner,
It is difficult for a device that moves to an unspecified location to ground externally and positively discharge static electricity. For this reason, some brushed type rotary brushes employ a conductive brush made by mixing carbon with nylon, which has rigidity to scavenge dust, to prevent generation of static electricity.

[0004]

However, the conductive brush mixed with carbon has a problem that coloring of the carpet is caused by the carbon of the brush when cleaning the carpet. Further, even a conductive brush cannot completely prevent generation of static electricity, and in terms of dust collection performance, there is a problem that dust scraped up by the rotating brush is redeposited on the carpet due to static electricity.

The present invention solves the above-mentioned problems, and prevents the carpet from being colored, suppresses the generation of static electricity in the rotating brush portion, prevents malfunction of the vacuum cleaner due to electrostatic discharge, and prevents electric shock to people. The first purpose is to improve the dust collection performance.

A second object is to maintain the effect of preventing static electricity from occurring due to cotton dust or the like adhering to the surface of the brush portion.

[0007]

As a first means for achieving the first object of the present invention, the brush portion of the rotary brush is composed of a dust collecting brush and a conductive static eliminating brush. It is a thing.

As a second means for solving the problem, the outer diameter of the static elimination brush is made smaller than the outer diameter of the dust collection brush.

As a third means for solving the problem, in the brush portion of the rotary brush, the dust collecting brush and the dust collecting brush are integrated and the outer diameter of the static eliminating brush is smaller than the outer diameter of the dust collecting brush. .

As a fourth means for solving the problems, the brush holder for fixing the brush portion of the rotary brush is made of a conductive material, and its surface is formed into a plurality of pointed projections.

In order to achieve the second object, a static elimination brush is provided as a fifth problem solving means behind the dust collecting brush with respect to the rotation direction of the rotary brush, and a sixth embodiment solving means is a dust collecting brush. It is provided before and after.

[0012]

With the first means for solving the problems, it is possible to select, as the static elimination brush, a material having a high conductivity other than carbon, which has a low rigidity, and which has no color on the carpet.

According to the second and third means for solving the problems, static electricity can be corona-discharged with the static elimination brush directly on the carpet with little or no contact margin, or while keeping the number of brushes small. The rotating load of the rotating brush is reduced, the input of the electric motor for driving the rotating brush is suppressed, and it is possible to prevent the usage time from being shortened in a device using a battery as a power source.

According to the fourth means for solving the problems, static electricity can be corona-discharged in the air from the spire projections on the surface of the brush holder for fixing the brush portion of the rotary brush, so that the static elimination effect is further enhanced. .

Next, according to the fifth problem solving means for achieving the second object, the static elimination brush is provided behind the dust collecting brush with respect to the rotating direction of the rotary brush, so that the dust collecting brush can be used first. By attaching dust, it becomes difficult to attach to the brush for static elimination, and the static elimination effect is maintained. Further, according to the sixth means for solving problems, by providing the static eliminating brush before and after the dust collecting brush, it is possible to cope with the forward rotation and the reverse rotation of the rotating brush.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a rotary brush which is Embodiment 1 of the first means for solving the problems of the present invention will be described below with reference to FIG. The rotating brush 1 includes a rotatable cylindrical or cylindrical brush holder 2 and a dust collecting brush 3 mainly composed of nylon that is planted on the outer peripheral surface of the brush holder 2.
And, the bristles are planted rearward with respect to the rotation direction A of the rotating brush 1,
The brush 4 is composed of a conductive material as a main component.

The operation of the above configuration is as follows.
By providing the static elimination brush 4 separately from the dust collection brush, the static electricity generated in the dust collection brush 3 is eliminated.
Thus, by generating a corona discharge on the floor immediately before and immediately after the contact with the floor, discharging the particles by a neutralizing action at the time of contact, and by causing a corona discharge even in the air, it is possible to prevent the generation of static electricity as a whole. Further, as the material of the brush 4 for static elimination, it is possible to select a material having high conductivity, which is not colored on the carpet or the like, and the static elimination effect can be made higher than before. Further, since the electricity can be removed by the static electricity generation source, dust can be prevented from being charged with static electricity and redeposited on the carpet again, and the dust collection performance can be improved.

Next, Embodiments 2 and 3 of the second and third problem solving means will be described with reference to FIGS.

In FIG. 2, the outer diameter of the static elimination brush 4 is made smaller than the outer diameter of the dust collection brush 3 so as not to come into contact with the floor surface of a carpet or the like.

In FIG. 3, in the brush portion, the dust collecting brush 3 and the static elimination brush 4 are integrated to be flocked, and the static elimination brush 4 is
Has an outer diameter smaller than that of the dust collecting brush 3.

With the above structure, when the static elimination brush 4 approaches and leaves the floor surface, corona discharge is generated on the floor surface, and otherwise, corona discharge is performed in the air. In this case, in the embodiment of FIG. 2, the static elimination brush 4 is not in contact with the floor surface, and in the embodiment of FIG. 3, the load of the rotary brush is small because the number of brushes is small in addition to the embodiment of FIG.

A fourth embodiment of the fourth problem solving means will be described with reference to FIG. The brush holder 2 is made of a conductive material such as aluminum and has a plurality of pointed projections 2a on its surface, and the pointed projections 2a cause corona discharge into the air.

Next, the fifth and sixth problems solving means of the fifth embodiment will be described.
6 will be described with reference to FIGS.

In FIG. 1, the static eliminating brush 4 is arranged behind the dust collecting brush 3 with respect to the rotating direction of the rotary brush 1 (shown by an arrow A in the figure). In FIG. 4, the static elimination brush 4
Are arranged in front of and behind the dust collecting brush 3 to correspond to the forward rotation and the reverse rotation of the rotating brush 1.

The operation of the above configuration is as follows. In the case of FIG. 1, dust adheres to the dust collecting brush 3 first and is less likely to adhere to the static elimination brush 4, and the static elimination effect is maintained. In the case of FIG. 4, even if dust adheres to the static elimination brush 4, it is removed during the reverse rotation, so that the static elimination effect is maintained.

[0026]

EFFECTS OF THE INVENTION As is apparent from the above embodiments, by the constitution of the first means for solving the problems of the present invention, the static elimination brush is made of a material having high conductivity other than carbon, which has low rigidity, and which has high color conductivity and is not colored on the carpet. Can be selected.

According to the second and third means for solving the problems, static electricity can be directly corona-discharged with a small charge or without contact of the static elimination brush with the carpet or while keeping the number of brushes small. The rotating load of the rotating brush is reduced, the input of the electric motor for driving the rotating brush is suppressed, and it is possible to prevent shortening of the operating time in a device using a battery as a power source.

According to the fourth problem solving means, static electricity can be corona-discharged in the air from the pointed projections on the surface of the brush holder for fixing the brush portion of the rotary brush, so that the static elimination effect is further enhanced. To be

According to the fifth means for solving the problems, the static eliminating brush is provided at the rear of the dust collecting brush with respect to the rotating direction of the rotary brush, so that the dust is attached to the dust collecting brush first, so that the static eliminating brush is not provided. It becomes difficult to adhere and the static elimination effect is maintained.

Further, according to the sixth object means, by providing the static eliminating brush before and after the dust collecting brush, the normal rotation of the rotary brush,
It is possible to reverse.

As described above, according to the present invention, since static electricity can be immediately discharged by the source of static electricity, the static electricity removal effect is high, and the static elimination brush is a material having high conductivity other than carbon and having no color to the carpet. It becomes possible to select
In addition to coloring, there is no problem and a rotating brush with high static electricity prevention can be configured to prevent malfunction of the micro computer.
In addition, it is possible to prevent electric shock to a person who is cleaning and improve dust collecting performance.

[Brief description of drawings]

FIG. 1A is an external view of a rotating brush of Examples 1 and 5 of the invention. FIG. 1B is a sectional view of the same example.

FIG. 2 is a sectional view of a rotating brush according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a rotating brush according to a third embodiment of the present invention.

FIG. 4 is a sectional view of a rotating brush according to a sixth embodiment of the present invention.

FIG. 5 is a sectional view of a rotating brush according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1 rotating brush 2 brush holder 2a pointed protrusion 3 dust collecting brush 4 static elimination brush

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hidetaka Yabuuchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Toshiaki Fujiwara 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Osamu Eguchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hirofumi Inui, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Takafumi Ishibashi, Osaka Prefecture 1006 Kadoma, Kadoma-shi, Matsushita Electric Industrial Co., Ltd. (72) Inventor, Yoshifumi Takagi, Kadoma, Kadoma, Osaka Prefecture 1006 Kadoma, Matsushita Electric Industrial Co., Ltd. Sangyo Co., Ltd.

Claims (6)

[Claims] 1. A rotary brush for a floor nozzle, wherein a brush portion of the rotary brush is composed of a dust collection brush and a conductive static elimination brush. 2. The rotary brush for a floor nozzle according to claim 1, wherein the outer diameter of the static elimination brush is smaller than the outer diameter of the dust collection brush. 3. A rotation of a floor nozzle, wherein the brush portion of the rotating brush is made by integrating the dust collecting brush and the dust collecting brush, and the outer diameter of the static eliminating brush is smaller than the outer diameter of the dust collecting brush. brush. 4. The static elimination brush is provided behind the dust collecting brush with respect to the rotating direction of the rotary brush.
Rotating brush for the floor nozzle described. 5. The rotary brush for a floor nozzle according to claim 1, wherein a static elimination brush is provided before and after the dust collection brush. 6. The floor nozzle according to claim 1, wherein the brush holder portion for fixing the brush portion of the rotary brush is made of a conductive material, and the surface thereof is formed into a plurality of pointed projections. Rotating brush.