JPH03260411A - Washer for fixing electrical wire - Google Patents

Abstract

PURPOSE:To fix an electrical wire mechanically without cutting it by forming numerous recessed grooves having V-shaped cross section on the bottom face of a washer at certain intervals in lattice shape, and putting the electrical wire between them so that flat sections cut into the electrical wire. CONSTITUTION:Numerous recessed grooves 12 having V-shaped cross section are formed on the bottom face of a washer 10 at a certain space in lattice shape, and this washer 10 is used by putting an electrical wire 15 between the bottom face and terminal metal fixture 14 at a terminal 13 and tightening a screw part 16 for use. Consequently, flat sections cut into the electrical wire 15, which enables the mechanical fixing of the electrical wire 15 without cutting it. This makes electric face contact to keep small the contact resistance and the fluctuation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a washer used for a terminal or the like and used for fixing an electric wire.

PRIOR ART AND PRIOR ART PROBLEM TO BE SOLVED BY THE INVENTION When an electric wire is held down with a normal flat washer, the electric wire slips and is easily pulled out, and since an electric wire with a circular cross section is held down with a flat surface, poor contact is likely to occur.

For this reason, conventionally, a flat washer has been used in which dotted protrusions are formed at several locations by press working.

A washer with such protrusions presses the electric wire with the protrusion, so it can be firmly fixed, but it has the disadvantage that if it is tightly tightened, the protrusion will push the electric wire away. In addition, the protrusions of the wire make dot-like contact, and the other parts are close to the washer and may or may not make contact, resulting in large and unstable contact resistance, causing overheating when a large current flows, and causing small signals. Generates noise when current flows through it.

The object of the present invention is to eliminate these drawbacks and to realize a washer that can mechanically and electrically securely and stably fix an electric wire.

Means for Solving the Problems In the present invention, a large number of grooves are formed at intervals on a flat surface for holding an electric wire, and when the electric wire is pressed, a part of the electric wire digs into the groove, and a part of the electric wire becomes flat. This is a washer for fixing electric wires that can be held in place.

EXAMPLES Hereinafter, examples illustrating the present invention will be specifically described.

This washer 10 has a square shape as a whole and has a screw insertion hole 11 in the center.

The washer 10 has a concave groove 12 with a V-shaped cross section.・
... are formed in a grid pattern with intervals.

As shown in FIG. 3, this washer 10 is used by sandwiching the electric wire 15 between the lower surface of the terminal 13 and the terminal fitting 14, screwing the screw part 16 into the female thread 17 of the terminal fitting 14, and tightening it.

In this way, the electric wire 15 is inserted into the concave groove 12. . . . The flat portion between them is pressed and deformed, forming the concave groove 12. ...A part of it is wedged inside. Therefore, it will not slip and come out, and even if the screw part 16 is tightened with excessive force, it will only be pressed against the flat surface, so the electric wire 15 will not break. Further, the washer 10 and the electric wire 15 are connected to the flat portion between the grooves and the groove 12. Since surface contact occurs over a wide area within..., the contact resistance becomes slight, and furthermore, this low resistance state becomes stable due to mechanical stability.

Note that the shape of the washer of the present invention is arbitrary, and it goes without saying that it may also be rectangular, circular, etc. Concave groove 1
2. ... should be on the side of the washer that holds the wire, but
It can also be provided on both sides so that either side can be used facing the electric wire.

Concave groove 12. The shape of . Concave groove 12. ... may be arranged in a grid pattern or in parallel,
It is advantageous to form the wire in a lattice shape, as it allows the wire to dig in well regardless of the direction of the wire.

Effects of the Invention As described above, in the washer of the present invention, the concave grooves are formed at intervals, so that the part of the S''LL wire bites into the concave grooves, and a part of the wire is pressed flat. .

Therefore, mechanically, the electric wire is prevented from slipping and coming out, and even if the tightening force is excessive, the electric wire will not break, and it can be held extremely firmly and stably. . Electrically, since the flat part and the inner surface of the groove come into surface contact with the wire, the contact resistance is small, making it difficult to generate heat even when a large current is passed.Also, due to mechanical stability, the contact resistance is small. does not change,
Therefore, even when a small signal current is passed, there is no problem caused by noise.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, with FIG. 1 being a bottom view and FIG.
The figure is a front view, and FIG. 3 is a sectional view of the device in use. 10...Wire fixing washer, 11...Wire insertion hole, 1
2. Concave groove, 13. Terminal, 14. Terminal fitting, 15. Electric wire, 16. Screw parts, 17.
...Female thread. Figure 1 0

Claims (1)

[Claims] 1. A wire fixing method in which a large number of grooves are formed at intervals on the flat surface that holds the wire, so that when the wire is held, part of the wire digs into the groove and part of the wire is held against the flat surface. washer for use.