JPH0777154B2 - Fork contact manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fork contact manufacturing method for punching a metal hoop material to manufacture a fork contact.

[0002]

2. Description of the Related Art Conventionally, a metal hoop material is punched out to form a chain-type fork contact having a structure in which a large number of four contacts are connected by a connecting band, and each fork contact is separated from the connecting band, For contacts were manufactured by plating a good conductive material such as silver. In this case, the fork contact is plated for the reason of improving the stability of contact, improving the soldering of the terminal portion, or the like.

[0003]

However, in the past, the post-plating method was used in which each fork contact was plated after being separated from the connecting band, so that the machining process and the plating process were reciprocated. Therefore, there is a problem that it is very troublesome and costly.

Recently, due to the automation of connector assembly,
Chained fork contacts are desired. For this reason,
It may be possible to apply plating to this at the stage of a chain-type fork contact, but with the chain-type fork contact there are many irregularities in the longitudinal direction, so it is difficult to supply and wind in the plating tank and it is not implemented. The current situation is that there are none.

An object of the present invention is to provide a method for manufacturing a fork contact which can be manufactured efficiently.

[0006]

A feature of the present invention for achieving the above object is to provide a fork contact manufacturing method for punching a metal hoop material to manufacture a fork contact. Put on,
The metal hoop material with a good conductive material layer is punched out to form a chain-type fork contact having a structure in which a large number of fork contacts are connected by a connecting body, and then a part of the tip of each of the fork contacts is bent and formed. The surface with the good conductive material layer is used as a contact portion.

[0007]

When the method of depositing the good conductive material at the stage of the metal hoop material is adopted, the working process is remarkably simplified.

Further, since the contact portion is formed by bending a part of the tip after punching into a fork shape, the surface of the contact portion also has a good conductive material layer surface.

[0009]

EXAMPLES Examples of the present invention will be described in detail below.

In this embodiment, a metal hoop material made of brass or the like is passed through a plating tank and both surfaces thereof are plated with silver, for example. The metal hoop material with such a good conductive material layer is punched out to form a chain type fork contact 3 having a structure in which a large number of fork contacts 1 are connected by a connecting band 2 as shown in FIG.

Thereafter, as shown in FIG. 1, a part of the tip of each fork piece 4 of each fork contact 1 is bent to form a contact portion 5. In this case, it is preferable that each contact point portion 5 is provided with a projecting protrusion 5a facing each other. According to such a chain-type fork contact 3, the fork contact 1 can be automatically supplied corresponding to the automatic assembly of the connector. At the time of automatic supply, each fork contact 1 is separated from the connecting band 2.

In this case, although the pre-plating method is adopted, since the contact portion 5 is formed by bending a part of the tip of the fork piece 4, a good conductive material layer exists on the surface of the contact portion 5. Also, contact stability can be obtained. After punching, it can be directly supplied to an automatic assembly machine, and it is possible to continuously perform from pressing to assembling.

In the above-mentioned embodiment, the good conductive material layer is applied by plating, but in addition to this, a good conductive material plate may be laminated to use a clad material.

[0014]

As described above, in the method for manufacturing a fork contact according to the present invention, since the good conductive material is deposited on the metal hoop material at the stage of the metal hoop material, the deposition work can be easily performed. it can. Further, even if the method of depositing the good conductive material is adopted first, since the contact portion is formed by bending a part of the tip of the fork contact, the good conductive material layer is present on the surface of the contact portion. . Further, in the present invention, after the step of depositing the good conductive material, only the machining step is performed, and it is not necessary to reciprocate the material between the plating step and the machining step, and the press processing to the assembly processing are performed in a continuous line. Therefore, the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a fork contact manufactured by the method of the present invention.

FIG. 2 is a plan view showing the same chain type fork contact in the process of manufacturing.

[Explanation of symbols]

 1 Fork contact 2 Connection band 3 Chain type fork contact 4 Fork piece 5 Contact part

Claims (1)

[Claims] 1. A method of manufacturing a fork contact, comprising punching a metal hoop material to manufacture a fork contact, wherein a good conductive material is applied to the metal hoop material in advance, and the metal hoop material with the good conductive material layer is punched out. Forming a chain-type fork contact having a structure in which the fork contacts are connected by a connecting body, and then forming a part of the tip of each of the fork contacts by bending to form the contact surface with the good conductive material layer. And a method for manufacturing a fork contact.