JPS5827635B2 - Manufacturing method of insulation displacement type contact for covered electric wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a pressure welding type socket contact that applies pressure to a covered electric wire to break the covering of the electric wire to electrically connect the electric wire and at the same time hold the electric wire.

Conventionally, this type of pressure-welding type socket contact usually has a pin contact insertion guide mechanism made of an insulating material, or the socket contact is made up of multiple divided pieces, resulting in a complex structure that is labor-intensive and costly to manufacture. There were drawbacks such as high cost.

The present invention eliminates the above-mentioned drawbacks, has a simple structure, is easy to manufacture, and can be provided at low cost.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be explained below.

First, as shown in FIG. 2, a U-shaped electric wire holding groove 2 is provided at one end of a strip-shaped metal plate 1 cut into required dimensions, and a Y-shaped groove 3 is provided at the other end.

The sloped part 3a of the groove is the part where the insulation of the covered electric wire is cut, and a suitable blade part is provided, and the narrow groove part 3b has a width sufficient to electrically connect and maintain the core wire (conductor) part of the electric wire. be.

Reference numeral 4 denotes a pin guide hole provided in the center, the dotted line portion is a bottom portion C, and side pieces A and B are formed on both sides thereof.

Both side pieces A and B each have a U-shaped notch 5 symmetrically outward.
, 5 are provided.

Next, as shown in FIG.
The surface of the wire holding groove 2 at one end is bent upward at right angles, and the side piece B is bent into two steps, so that the Y-shaped groove 3 is connected to the wire holding groove 2.
Bend it so that it is parallel to the bottom part C while maintaining a constant distance a.

Thereafter, the U-shaped notches 5, 5 are pushed down inward in an arcuate manner to form a pin contact spring.

3 and 4 show other embodiments of the present invention, and the difference from FIG. 2 is that the Y-shaped groove 3' at the tip of the side piece B has a narrow groove 3b/ In the case of forming the wire holding part, as shown in Fig. 3, 1
It is bent downward from the tilted part 3a' to form a plane E parallel to the bottom part C.

FIG. 5 is an explanatory diagram of inserting the pin contact 6 into the contact shown in FIG. 1 as shown by the arrow, and FIG.
FIG. 3 is an explanatory diagram showing a state in which the electric wire 7 is attached.

As explained above, the contacts manufactured by the method of the present invention have high reliability of contact between the electric wire and the contact, and between the pin contact and the contact, and by pressing the electric wire with the sheath still on, the sheath can be broken and electrically generated. Since it can be connected and held to the body, it has good work efficiency, has a simple shape and is easy to mold, and can be manufactured at low cost with less material loss as seen from the development diagrams in Figures 2 and 4. It has the advantage of having great practical effects, such as being able to.

[Brief explanation of drawings]

FIG. 1 is an assembled perspective view of a contact according to an embodiment of the present invention, FIG. 2 is an exploded view of the same, and FIG. 3 is an assembled perspective view of an embodiment of the same.
FIG. 4 is an exploded view of the same, and FIGS. 5 and 6 are explanatory views of the state in which the electric wire and pin contactor are attached. 1 is a band-shaped metal plate, 2 is an electric wire holding groove, 3 is a Y-shaped groove for press-fitting an electric wire, 4 is a bin guide hole, 5 is a U-shaped notch, 6 is a pin contact, 7 is a covered electric wire, A and B are Side piece, C is the bottom part.

Claims (1)

[Claims] 1. A U-shaped wire holding groove 2 is provided at one end of a band-shaped metal plate 1, a Y-shaped groove 3 for press-fitting the wire is provided at the other end, and a binder hole 4 is provided in the center.
, and U-shaped notches 5 are provided on both sides of the pin hole.
5 are provided symmetrically, and after bending the bottom surface C centering on the pin guide hole 4 and the side pieces A and B on both sides thereof into a U-shape, each of the side pieces A and B is bent. Bend the tip so that it is parallel to the bottom C while keeping a constant distance a, hold and connect the electric wire on both sides, and bend the notches 5, 5 inward to form a pin contact spring. A method of manufacturing a press-contact type contact for a covered electric wire, characterized in that: 2. The manufacturing method according to claim 1, wherein the end surfaces of both side pieces A and B are bent in parallel in the same direction. 3. The manufacturing method according to claim 1, wherein the end surfaces of the both side pieces are bent in opposite directions. 4. The manufacturing method according to claims 1 to 3, wherein the inclined surface of the Y-shaped groove is a blade portion capable of cutting the covering of the covered electric wire.