JPH0754958Y2 - Brush device for static elimination - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a static elimination brush device, which prevents a conductive brush from coming into contact with an electric connector of an electric device to cause a short circuit and a short circuit. It was done.

(Prior Art) Static electricity is generated on the surface of an electric device such as a television, a video device, an audio device, a computer and a word processor, and dust such as dust is apt to adhere to the static electricity. For this reason, as shown in FIG. 9, it is known to remove the charge on the surface of the electric device 102 by the static elimination brush device 100 including the conductive brush 101.

(Problems to be Solved by the Invention) In the conventional brush device 100, the conductive brush 101 is brought into contact with the surface of the electric device 102, and the electric charge charged on the surface is removed as a leakage current.

However, while discharging the vicinity of the outlet hole 103 of the electric device 102, the brush 101 enters the outlet hole 103,
A short-circuit current leaks by contacting the internal electrical connector 104, and a large current flows from the fingertips holding the brush device 100 to the human body,
There was a problem of being susceptible to electric shock.

As a means for solving such a problem, shortening the brush 101 can be considered. That is, the electrical connector 104
Is standardized by JIS so that the upper end thereof is located 5 mm or more inward of the surface of the electric device 101. Therefore, if the length of the brush 101 is 5 mm or less, the above problem can be solved. However, when the brush 101 is shortened in this way, its flexibility is lost, the surface of the electric device 102 cannot be flexibly contacted, and the waist becomes too strong, and the surface is easily damaged.

(Means for Solving the Problems) In order to solve the above problems, the present invention forms a recessed portion 4 on the surface of the grip portion 2 and implants a conductive brush 3 at the bottom of the recessed portion 4, The tip of the conductive brush 3 is projected from the recess 4.

(Operation) In the above configuration, since the protrusion length t of the brush 3 can be shortened and the total length of the brush 3 can be earned by the depth d of the recessed portion 4, sufficient flexibility is ensured, and thus the brush 3 is There is no danger of deeply entering the outlet hole 6 and coming into contact with the electrical connector 7, and the surface of the electrical device 5 can be destaticized while flexing flexibly.

(Example) Next, the Example of this invention is described, referring drawings.

In FIG. 1, a static elimination brush device 1 is formed by implanting a conductive brush 3 in an extension portion 2a of a rod-shaped grip portion 2. The grip portion 2 serves as a grounding means for the conductive brush 3 by coating the surface thereof with a conductive dye. The conductive brush 3 is formed by mixing metal powder into the brush, coating with a conductive substance, or dyeing with a conductive dye.

The brush 3 is planted at the bottom of the recessed portion 4 which is recessed in spots at a pitch on the surface of the extending portion 2a (second
(See also the drawing), the tip of the brush 3 projects from the recess 4. This protrusion length t is less than 5 mm and is quite short,
Since the total length of the brush 3 can be earned by the depth d of the recess 4, the brush 3 has a sufficient flexibility, and the recess 4 has a size that allows the brush 3 to freely bend. Has become.

In the above configuration, the grip portion 2 is held by a fingertip, and the tip of the brush 3 is brought into contact with the surface of the electric device 5 to slide the electric charge on the surface (see FIG. 3).
Further, although the electric connector 7 exists inside the outlet hole 6, since the protruding length t of the brush 3 is short, the brush 3 deeply penetrates into the outlet hole 6 and comes into contact with the electric connector 7, resulting in a short-circuit leakage. There is no such thing.

(Other Embodiments) In FIGS. 4 and 5, two ribs 13, 13 are projected on the surface of the extending portion 12a of the grip portion 12 along the length direction thereof, and The conductive brush 3 is planted at the bottom of the recessed portion 14. The upper end of this brush 3 has ribs 13
Since it projects from the upper surface, the same effect as that of the first embodiment can be obtained.

Further, the brush 3 penetrates the extending portion 12a, and the brush 3a on the other end side projects to both sides of the extending portion 12a. Other brushes 15 are planted along both sides of the brush 3a. The brush 15 is longer than the brush 3a, and protrudes by a length l. The brush 15 is made of an insulating material so as not to cause a short circuit even if it contacts the electric connector 7.

In this case, when the brush 15 is brought into contact with the surface of the electric device 5 and slid, the brush 3 has a property as a needle electrode, so that the electric field strength with the charged surface of the electric device 5 is reduced. A large discharge phenomenon occurs to remove this charge. In the vicinity of the outlet hole 6, the brush 15 serves as a guard means for the brush 3a to prevent the brush 3a from deeply entering the outlet hole 6 and coming into contact with the electric connector 7 (see FIG. 6).

7 and 8 show the extending portion of the grip portion 22.
Ribs 23 each having a semicircular tongue shape are arranged in parallel with each other at a pitch 22a, and the brush 3 is planted at the bottom of the recessed portion 24 therebetween. The rib 23 is formed of an elastic material such as conductive rubber so as not to damage the surface of the electric device 5. Therefore, this one can also obtain the same effects as those of the above embodiment.

(Effect of the Invention) As described above, according to the present invention, the concave portion 4 is formed on the surface of the grip portion 2, and the conductive brush 3 is planted in the bottom portion of the concave portion 4 to make the conductive brush 3 Since the tip portion is projected from the recessed portion 4 to form the static elimination brush device 1,
It is possible to prevent the brush 3 from coming into contact with the electrical connector 7 inside the outlet hole 6 while increasing the overall length of the conductive brush 3 to ensure sufficient flexibility.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a brush device for static elimination, FIG. 2 is a sectional view, FIG. 3 is a side view in use, and FIGS. , FIG. 6 is a perspective view and a sectional view of another embodiment, FIGS. 7 and 8 are perspective views of still another embodiment, and FIG. 9 is a side view of the conventional one in use. 1 …… Brush device for static elimination 2,12,22 …… Grip part 3 …… Conductive brush 4,14,24 …… Concave part

Claims (1)

[Scope of utility model registration request] 1. A concave portion 4 is formed on the surface of a grip portion 2, a conductive brush 3 is planted at the bottom of the concave portion 4, and the tip of the conductive brush 3 is projected from the concave portion 4. A static elimination brush device characterized by being formed by