JPS63124385A - Manufacture of female terminal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Chikai Futanshu [Industrial Application Field] The present invention provides a method for reducing manufacturing steps and lowering costs.
This invention relates to improvements in the method of manufacturing female terminals.

[Conventional technology]

As shown in FIG. 6, a female terminal for an electrical connector has a configuration in which a receiving part 1 for a male terminal is provided at one end, a wire connecting part 2 is provided at the other end, and a spring part 3 is provided within the receiving part 1. have

As the connector becomes smaller, the spring portion 3 of the female terminal inevitably becomes smaller, and it is technically difficult to design the connector to have a high contact load with the male terminal. Therefore, in the past, the materials of the spring part 3, the receiving part 1, and the wire connecting part 2 were changed, and the seventh
As shown in the figure, each was manufactured in separate processes, and the spring part 3 was assembled into the receiving part l in the final process. In addition, in the case of electrical connectors for large currents, stress relaxation is likely to occur due to self-heating of the terminal, the contact load of the female terminal decreases, and resistance increases during use. was made from a different material.

[Problem that the invention seeks to solve]

According to the conventionally known technology, when the spring part of the female terminal, the receiving part, and the wire connecting part are made of different materials, the spring part is pressed, as disclosed in, for example, Japanese Utility Model Application Publication No. 173987. The female terminal is manufactured in three steps: a press process for the receiving part, and a process for assembling both.

Therefore, there are many production steps, which does not increase productivity, which increases costs.In addition, an assembly machine is required in addition to two sets of press molds, which increases equipment costs. Problems such as these are likely to occur.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a method for manufacturing a female terminal in which the spring part, the receiving part, and the wire connection part are made of different materials from a single sheet metal in one step.

Full-spot Ω base [Means for solving the problem] To explain with reference to the drawings, the method for manufacturing the female terminal of the present invention is as shown in FIGS.
A receiving part 11 and a spring part 12 for the male terminal are provided at one end.
and a female terminal A having a wire connection part 13 at the other end.
In the method of manufacturing from a single sheet metal M by pressing and punching, the thin sheet metal M is made of a material M that is made of a highly elastic material M and a material M2 that is highly conductive that are welded together, and at least The spring portion 12 and the wire connection portion 13 are made of a material M1 having high spring properties and a material M2 having high conductivity, respectively.
It is characterized by being formed separately from the parts.

The receiving part 11 is a ceiling wall 1 formed by bending the free edges of the substrate 10 and the upstanding side walls 11a on both sides of the substrate and abutting them.
1b, and the wire connecting portion 13 has a conductor clamping piece 13a and an insulator clamping piece 13b for the electric wire. The spring portion 12 is connected to the receiving portion 11 integrally with the substrate 1o via the connecting piece 12a in the group terminal population portion of the receiving portion 11.
It is folded inside. In addition, the spring part 12 has locking pieces 12b provided on both sides of the base end part that fit into the holes 14 formed in the upright side wall 11a to prevent rattling when inserting the group terminal, and furthermore, the spring part 12 can be cut and raised from the board 1o. The formed protrusion 5 has a structure that prevents deformation due to excessive bending.

The thin sheet metal M is a highly conductive material M, as shown in FIG.
A material M1 having a different material and rich in spring properties is welded to one side edge of the two by an electron beam or the like, and is made into one piece. As the material M having high spring properties, for example, beryllium copper, copper-nickel alloy, stainless steel, etc. are used. Further, as the highly conductive material M2, a commercially available product such as tough pitch copper is suitable.

[For production]

According to the method of the present invention, as shown by the dotted line in FIG. The female terminal can be manufactured in one step by stamping and punching as shown in FIG. 4.

This process is the same as that of the conventional so-called one-piece terminal made of the same material (sheet metal), and can be manufactured using a terminal punching machine.

〔Example〕

Although the female terminal of FIG. 1 is representative of having a cylindrical receiving portion 11 for the male terminal, the method of the present invention is not limited to this type of terminal.

In other words, Fig. 5 shows the so-called glasses-shaped female terminal B.
The free edges of the upstanding side walls 16a on both sides of the board 16 are bent inward to form an elastic clamping arm 17, and a male terminal is fitted between the lower end edge of the elastic clamping arm 17 and the board 16. It was designed to be inserted.

In this case, since the receiving portion for the male terminal is integrated with the elastic clamping arm 17, the area C portion may be formed of the material M having high springiness as described above.

Mitsugai ■ Effect As explained above, according to the method for manufacturing the female terminal of the present invention, since a thin sheet metal material is used in which a material with high springiness and a material with high conductivity are integrated in advance, it can be made into a single piece. Like terminals, it can be manufactured in one step, making it possible to significantly reduce costs. This method can be applied regardless of the size of the terminal, the spring part is heat resistant and has excellent stress relaxation properties, the wire connection part is highly conductive, and a female terminal with a long life with little temperature rise can be obtained. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a female terminal according to the method of the present invention, FIG. 2 is an explanatory diagram of a thin sheet metal used in carrying out the method of the present invention,
FIG. 3 is an explanatory diagram of a method for molding a female terminal from the sheet metal of FIG. 2, FIG. 4 is a perspective view showing the manufacturing process of the female terminal, and FIG. FIG. FIG. 6 is a perspective view of a conventional female terminal, and FIG. 7 is an explanatory diagram of its manufacturing method. A, B... Female terminal, 10... Board, 11...
・Receiving part, 12... Spring part, 13... Wire connection part,
16... Substrate, 17... Elastic clamping arm, M... Thin sheet metal, Ml... Material rich in springiness, M2... Material rich in conductivity.

Claims (1)

[Claims] One end has a receiving part and a spring part for the male terminal,
In a method of manufacturing a female terminal having a wire connection portion at the other end by pressing and punching from a single sheet metal, the thin sheet metal is made of a material with high springiness and a material with high conductivity, which are integrated by welding or the like. A method of manufacturing a female terminal, characterized in that at least the spring portion and the wire connection portion are formed separately from a material having high spring properties and a material having high conductivity.