JPH0730457U - Grounding bracket Electrical insulation cover - Google Patents

Abstract

(57) [Summary] [Purpose] To secure the safety of the grounding fitting 4 attracted by the magnet. [Structure] Covered so as to surround the magnet 10,
The attraction surface 4A of the magnet 10 is opened by the window 21. Further, the ground wire 3 is fitted into the first through hole 22 provided on the side surface of the cover 20, and the operation lever 11 projects outward from the second through hole 23. As a result, it is possible to ensure the safety of the operator who handles the grounding metal without hindering the operation of the magnet 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grounding metal fitting insulating cover mounted on a grounding metal fitting for connecting a ground wire of a device to a wall or other existing grounding equipment.

[0002]

[Prior art]

 For example, in the case of simple electrical work at night, a power source such as a generator may be used to operate lighting and electric tools at the work site. Such generators are grounded for safety. FIG. 2 is a schematic diagram showing a grounded state of the conventional power supply vehicle in such a case. As shown in the figure, a power generator 1 is loaded with a generator 2. A ground wire 3 is connected to ground the generator 2. A grounding fitting 4 is attached to the tip of the grounding wire 3, and this is attached to the manhole body frame 5 by a magnet. The manhole body frame 5 is in contact with the ground with a relatively low resistance, and the grounding metal fitting 4 is adsorbed to such an already grounded facility, thereby grounding.

[0003]

[Problems to be solved by the device]

 By the way, the conventional methods as described above have the following problems to be solved. For example, it is assumed that the grounding metal fitting 4 comes off the manhole body frame 5 for some reason while using the generator 2. In this case, since the generator 2 is not grounded, a high voltage will be applied to the ground wire 3 should there be a leak or the like. Therefore, when an operator picks up the grounding fitting 4 and tries to attach it to the manhole body frame 5 again, there is a risk of electric shock.

The present invention was made in view of the above points, and an object thereof is to provide a grounding metal electrical insulating cover for ensuring the safety of the grounding metal as described above.

[0005]

[Means for Solving the Problems]

 The grounding metal electrical insulating cover of the present invention is attached to one end of the grounding wire of the equipment and fixed to the existing grounding equipment by a magnet so as to surround the grounding metal. A window made of soft plastic or rubber, which opens the attraction surface of the magnet, a first through hole for penetrating the ground wire, and a second through hole for penetrating the adsorption lever of the magnet. And

[0006]

[Action]

 The electric insulating cover is placed so as to surround the magnet, and the attraction surface of the magnet is opened by the window. Further, the ground wire is fitted into the first through hole provided on the side surface of the cover, and the operation lever projects outward from the second through hole. This ensures the safety of the operator who handles the grounding metal without disturbing the operation of the magnet.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of a grounding metal electrical insulating cover of the present invention. (A) is a perspective view of the grounding metal electrically insulating cover, (b) is a sectional view taken along the line AA, and (c) is insulating. It is a principal part sectional view which shows a part of back side of a cover. As shown in FIG. 3A, the grounding metal electrical insulating cover 20 of the present invention is made of, for example, soft vinyl chloride resin or rubber. A window 21 is provided on the lower surface of the grounding metal electrical insulating cover 20 so as to expose the attracting surface 4A of the magnet 10, which will be described later.

Further, a first through hole 22 for penetrating the ground wire and a second through hole 23 for penetrating the operating lever are provided on the side surface thereof. A first slit 24 and a second slit 25 are provided from the through holes 22 and 23 toward the window 21, respectively.

Here, the configuration of the grounding fitting 4 will be specifically described in advance. 3A and 3B are schematic views of the grounding fitting, where FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a right side view. As shown in (a) of the figure, a terminal 8 is compression-connected to the conductor 3A of the ground wire 3 whose one end (not shown) is connected to a device or the like. The terminal 8 is fastened and fixed to the magnet 10 with screws 9. The magnet 10 has a structure that can control an attracting force which is widely used in order to strongly fix an object to a wall surface of iron or the like. That is, as shown in FIG. 3C, the operating lever 11 is attached to the magnet 10. When the operating lever 11 is rotated in the direction of arrow 12, it is not shown inside the case of the magnet 10. The magnet body moves mechanically, weakening the attractive force. As a result, the magnet 10 can be easily removed from the surface on which the magnet 10 is attracted. On the contrary, when the magnet 10 is attracted to a wall surface or the like, the operation lever 11 is rotated in the direction opposite to the arrow 12 after the magnet 10 is brought into contact with the wall surface. As a result, the magnet 10 is strongly attracted to the wall surface or the like.

When such a grounding fitting 4 is used, it is necessary to connect the grounding wire 3 and also to enable the operation lever 11 to be operated. Therefore, the grounding metal electrical insulation cover 20 of the present invention is provided with a first through hole 22 and a second through hole 23 through which the ground wire 3 and the operating lever 11 can be exposed as shown in FIG. .

As shown in FIG. 1 (c), a recess 26 is provided on the back surface of the grounding metal electrical insulating cover 20 so that the terminal 8 can be accommodated in the portion where the terminal 8 is disposed. Therefore, the upper surface portion of the magnet 10 excluding the recess 26 has a relatively thick cover structure, and sufficient strength is maintained. Further, by providing the first slit 24 and the second slit 25, the cover can be immediately and easily attached while the ground wire 3 and the like are connected to the magnet 10.

It is to be noted that FIG. 4 shows a drawing of the grounding metal electrical insulating cover 20 shown in FIG. 1A as seen from each direction. (A) is a side view as seen from the ground wire side, (b) is a front view, (c) is a side view as seen from the operation lever side, and (d) is a plan view. As shown in this figure, the grounding metal electrical insulating cover 20 of the present invention almost completely covers the metal part of the grounding metal to ensure the safety of the operator.

The present invention is not limited to the above embodiments. The position and size of the through hole may be freely changed depending on the structure of the magnet. In addition, the recesses and the like provided inside can be freely changed depending on the shape of the terminal, etc., and the electrically insulating cover of the grounding metal fitting of the present invention is adsorbed to the body frame of the manhole as described above and is already grounded It can be widely used to insulate the grounding metal that is adsorbed to the wall surface of equipment and other suitable places.

[0014]

[Effect of device]

 The electric insulation cover of the grounding metal fitting of the present invention described above is mounted so as to surround the grounding metal fitting to which the ground wire is connected, is made of insulating soft plastic or rubber, and has a window and a ground wire that open the adsorption surface of the magnet. Since there is a through hole through which the suction lever and the suction operation lever penetrate, it is possible to secure the safety of the operator without damaging the operability by mounting it on the grounding metal fitting. Therefore, it is possible to prevent an operator from touching the metal part of the grounding metal and receiving an electric shock.

Accordingly, when working on a manhole or the like, it becomes possible to safely carry out the work by using a generator arranged near the manhole. Of course, the work of driving the grounding rod on-site is not necessary, which can contribute to the smooth progress of the construction. Furthermore, the grounding metal fitting electrical insulating cover also serves as a buffer that mechanically protects the grounding metal fitting and the connection portion of the grounding wire, and also plays a role of mechanical protection for these.

[Brief description of drawings]

FIG. 1 shows an embodiment of a grounding metal electrical insulating cover of the present invention, (a) is a perspective view thereof, (b) is a sectional view taken along the line AA, and (c) is a back surface of the grounding metal electrical insulating cover. It is a principal part sectional drawing of.

FIG. 2 is a schematic diagram showing a grounded state of a power supply vehicle.

FIG. 3 shows an example of a grounding fitting, (a) is a plan view thereof,
(B) is a front view and (c) is a right side view.

4A and 4B show an embodiment of the grounding metal electrical insulating cover of the present invention, wherein FIG. 4A is a left side view, FIG. 4B is a front view, FIG. 4C is a right side view, and FIG.

[Explanation of symbols]

 3 Ground Wire 4 Grounding Metal 4A Adsorption Surface 10 Magnet 11 Operating Lever 20 Grounding Metal Electrical Insulation Cover 21 Window 22 First Through Hole 23 Second Through Hole 24 First Slit 25 Second Slit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Yoshiro Nakamura 2-1 1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Inside STEC Co., Ltd. (72) Creator Shigeru Takahashi 2-1-2, Okano, Nishi-ku, Yokohama-shi, Kanagawa issue

Claims (1)

[Scope of utility model registration request] 1. A grounding metal fitting, which is connected to one end of a grounding wire of an equipment and fixed to a grounded equipment by a magnet, is mounted so as to surround the grounding metal fitting, and is made of insulating soft plastic or rubber. And a window for opening the attraction surface of the magnet, a first through hole for penetrating the ground wire, and a second through hole for penetrating the adsorption operation lever of the magnet. cover.