JPH0136302Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a connector for a lightning arrester grounding line of a utility pole, for example.

[Conventional technology]

Conventionally, ordinary electric wires have been used as grounding wires.

However, such a grounding wire exhibits high impedance (inductivity) against suddenly applied surges or lightning strikes, and thus does not function satisfactorily as a grounding wire.

Therefore, flat ribbon grounding wires (with capacitance) tend to be used for the purpose of reducing lightning surge impedance, but both grounding wires are connected by wrapping the opposing ends together and fastening a band. There is.

[Problem that the invention attempts to solve]

The method of wrapping the opposing ends of flat ribbon ground wires together and fastening them with a band has extremely poor workability on site.

[Means for solving problems]

In order to solve the above-mentioned problem of flat ribbon grounding wire connection, this invention consists of a pair of connector halves made by folding a rectangular metal plate in half with a small distance between them, and fitting them together with their ends facing each other. The space between the openings is a flat ribbon-shaped ground wire clamping part, and both clamping parts are made into a ground wire connector that can be compressed by tightening bolts.

[Effect]

While both connector halves are fitted and open at both ends, insert the ends of both flat ribbon grounding wires to be connected with their insulating outer coverings peeled off, and then tighten with bolts. Hold the resistance state and firmly clamp it.

〔Example〕

Fig. 1 and Fig. 2 show an example of the connector of the present invention, and 1a and 1b are a pair of connector halves made by folding a rectangular metal plate into two, and the two halves have a gap between the two folds, 〓a, which is the thickness of the half piece. Flat ribbon type ground wire 2a, 2
The dimensions are the same as the thickness of the bare wire portion 3 in b.

Both connector halves 1a and 1b have a pair of left and right holes 5a and 5b for passing bolts 4 through the connector halves 1a and 1b, respectively. In addition, the hole 5b is a bolt screw hole.

Both connector halves 1a and 1b are fitted with their front ends facing each other, and the bare wire part 3 of the grounding wire is inserted between the openings at both ends with the bolt 4 temporarily fastened, and the bolt 4 is fastened. The tip of the bolt protruding from the hole 5 pushes the opposing plate part b, and at the same time, the plate part c provided with the hole 5a is moved back, so that both bare wires are firmly clamped.

3 and 4 show other examples of the connector. This connector cannot withstand bolt fastening as shown in FIG. The holes 5a are similar to the holes 5a in the connector shown in FIG. 1, and are provided in each of the two folded plates, and by passing the bolt 4a through and screwing in the nut 6, the space between the plates is narrowed.

Also, since the bolt 4a passes through this connector, the bolt through hole is located at the center of each plate in the length direction.

Reference numeral 7 is provided for inserting the electric wire when the flat ribbon grounding wire is also used as a connector for connecting the electric wire (stranded wire) attached to the grounding rod terminal.

〔effect〕

In the connector of this invention, a pair of connector halves made by folding a rectangular plate in half are fitted with their front ends facing each other, and the bare end of a flat ribbon ground wire is inserted between the openings at both ends. Since the connectors are bolted together, the work on site is extremely easy, and there is no risk of the lightning impedance at the connector becoming high.

[Brief explanation of drawings]

FIG. 1, FIG. 3 are exploded perspective views of each example of the ground wire connector according to the present invention, and FIG. 2, FIG. 4 are partially cutaway side views of the same in the connected state. 1a, 1b, 1c, 1d... connector half,
4, 4a...Bolt, 6...Nut, 5a...Bolt through hole, 5b...Bolt screw hole, 6...
Nut, 2a, 2b...Flat ribbon type ground wire, 3...
...Bare wire section.

Claims (1)

[Scope of utility model registration request] 1. Folded rectangular metal plate pieces in half with a small distance between them.
A grounding device characterized in that a pair of connector halves are fitted with their front ends facing each other, and the space between the openings at both ends is a flat ribbon-shaped ground wire clamping part, and both clamping parts can be compressed by tightening with bolts. wire connector.