JPS636860Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is based on a carbon fiber mesh plate with a metal or carbonaceous conductor bar bordered on at least one side to form the main conductive path to the carbon mesh plate. Alternatively, it relates to a mesh grounding plate having a structure in which an external lead wire is connected to one end of a carbonaceous conductor bar, and relates to a grounding electrode for supplying current to the ground from an external power source.

Conventionally, this type of grounding electrode used rod-shaped or plate-shaped metal or solid carbon conductors, and wire-shaped metal conductors, but all of these grounding electrodes were rigid. As a result, spaces tend to form between the ground and the soil, which lacks adhesion, and the purpose of energizing the ground cannot be fully fulfilled. Therefore, it is economically desirable to use as thin a wire conductor as possible over the ground plane, but in this case, using a thin metal conductor will economically accelerate oxidation corrosion and cause damage over a short period of time. However, there were disadvantages such as loss of effectiveness as a conductor.

This invention was devised for the purpose of improving such conventional drawbacks, and the carbon mesh base plate that forms the main body of this invention is made by spinning a stretchable and bendable carbon fiber network, or by combining carbon fiber with cotton or glass. This is a carbon mesh base plate mixed with fibers such as fibers or chemical fibers, and carbon fibers are used as the main material of the earth electrical conductor.

Also, on at least one side of the carbon net plate, either a metal conductor bar is crimped from the top and bottom sides of the carbon net plate, or a carbon tape or carbon fiber with a cross section sufficient to form a large current path is attached. A carbon conductor bar such as a string is glued or sewn to form the main conductive path of the carbon mesh board. This metal or carbonaceous conductor bar is required to carry a large current through it and provide it as a distributed current to the carbon mesh plate.

Furthermore, an external lead wire is connected to one end of the metal or carbonaceous conductor bar to serve as a lead wire for connection to an external power source.

When cutting edges on metal conductors, use carbon mesh board 1.
It is desirable that the edges be sandwiched between the upper and lower metal plates and caulked or crimped in a wave pattern to improve electrical adhesion to the carbon mesh base plate. If the edge is to be edged with carbon tape or carbon fiber string, it must have a cross section large enough to serve as the main conductive path for large currents, as this has inferior conductivity compared to metal. is required.

Next, the net-like ground plate of this invention will be explained according to the drawings. FIG. 1a is a plan view of the present net-like ground plate;
FIG. 1b is an enlarged cross-sectional view taken along line A-A' in FIG. 1a. Further, FIG. 2 shows an explanatory diagram showing the operation of the mesh grounding plate.

In FIG. 1a, a carbon mesh base plate 1 that extends planarly to the ground is bordered on at least one side with a metal or carbonaceous conductor bar 2 to serve as a main conductive path to an external power source. This figure shows a case where metal bars are attached, but in this case, in order to achieve good electrical adhesion with the carbon mesh base plate 1, as shown in Figure 1b, the carbon mesh base plate 1 has metal bars on both the upper and lower surfaces. The bar 2 is used to sandwich the material, and the caulking material 4 is used to crimp and press-bond it. In this case, instead of caulking the metal bars 2, the same effect can be obtained by arranging the metal bars 2 on both the upper and lower surfaces as described above and press-molding them into a wave shape.

Further, a lead wire 3 connected to an external power source is connected to one end of the metal or carbonaceous conductor bar 2.

Figure 2 shows a large current 5 flowing from an external power source via a lead wire 3 and a metal or carbon conductor bar 2.
It is a diagram showing that a distributed current 6 flows through the carbon mesh base plate 1 that is in direct contact with the earth and is distributed over the earth.

Therefore, the metal or carbonaceous conductor bar 2 and the lead wire 3 through which the large current 5 flows are required to have a large diameter cross section to withstand this large current. The individual fibers forming the carbon mesh base plate 1 that are in direct contact with the earth do not need to have such a large diameter because only the dispersed current 6 flows therethrough. In other words, by adopting the structure in which the metal or carbonaceous conductor bars 2 are attached to the carbon mesh base plate 1 in this way, it is possible to flow a large current as a dispersed current 6 through the carbon mesh base plate 1, and the thin fiber This made it possible to use the carbon mesh base plate 1 made in the above as a ground plate.

Since this invention is constructed as described above, the carbon mesh base plate 1 that is in direct contact with the ground surface can be expanded and bent freely, and does not create a rigid space in the ground soil, and can fit well and make contact with the ground surface. It improves electrical conductivity and makes it possible to perfect ground conductivity, which is the main purpose of a grounding electrode.

Furthermore, by using metal or carbonaceous conductor bars 2 as the constituent material of the present invention, it is possible to distribute a large current through the carbon mesh board 1, and the carbon mesh board 1 woven with fine fibers can be used as a component. This allows it to be used as a grounding plate for large currents.

Furthermore, conventional grounding electrodes made of thin metal conductors were known to easily oxidize and corrode in the soil and could not withstand long-term use, but the mesh grounding plate of the present invention has a carbon mesh grounding plate as the main part. 1 is made of carbonaceous material, which is chemically stable, so there is no fear of corrosion, and its ground resistance value does not change over time.

[Brief explanation of the drawing]

Figure 1a is a plan view of the present invention, Figure 1b is Figure 1
FIG. 2 is an enlarged cross-sectional view taken along the line A-A' in FIG. 1... Carbon mesh base plate, 2... Metal or carbonaceous conductor bar, 3... Lead wire, 4... Caulking material, 5...
Large current, 6... Distributed current.

Claims (1)

[Scope of utility model registration request] A metal or carbonaceous conductor bar 2 is bordered on at least one side of a carbon mesh base plate 1 made of carbon fibers, and an external lead wire 3 is connected to one end of the metal or carbonaceous conductor bar 2. A net-like ground plate with a built-in structure.