JPH0817545A - Contact pin holding belt - Google Patents

Abstract

PURPOSE:To electrically plate with a contact pin held to increase contact capability and corrosion resistance by integrally arranging a standing wall on both side ends of an elastic synthetic resin continuous belt-like body. CONSTITUTION:Each contact pin 3 cut and formed is passed across facing recesses 4, 4 in a holding body and closely fit, and spirally wound while a non-fitting region of several pitches at intervals of specified numbers according to the number of pins to be installed in a connector is formed. The width of the recess 4 of the holding body is set slightly narrower than the diameter or the contact pin 3, and by fitting the contact pun to the recess, a standing wall 2 is deformed according to the side surface of the contact pin 3, and a thin film 5 comes in contact with the contact pin 3. For plating, by connecting a power source to the thin film of the holding body, charges with the same polarity are supplied to the all contact pins.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of reliably holding a large number of contact pins at a predetermined pitch when a large number of contact pins are implanted in a connector body at the same time, and at the same time, the entire surface plating and partial plating with metal are performed. The present invention relates to a contact pin holding band that can be applied.

[0002]

2. Description of the Related Art One of the methods for forming contact pins is to cut a copper wire having a rectangular cross section into a predetermined length. This method has the advantage that the waste of material is small and the length of the contact pin implanted in the connector can be set arbitrarily. Also, when implanting the contact pin manufactured in this way into the connector body, in order to reduce the trouble of positioning and planting, the contact pin is once fitted to the metal or synthetic resin holding band. However, a means for implanting a large number of pieces at a time is adopted, and since the holding band has concave grooves for fitting the contact pins at a constant pitch, the holding band for holding the contact pins is fed. There is also an advantage that the number of contact pins to be implanted at one time can be appropriately changed by controlling the number of contact pins to be implanted at the time of implantation. As described above, the above method can be said to be a manufacturing method suitable for low-cost, high-mix low-volume production of a wide variety of products.

[0003]

However, since the conventional holding band in the above manufacturing method is poor in elasticity as compared with the metal holding band, elasticity is added to the standing wall that holds the contact pin from both sides. There is a problem in that the shape becomes complicated by providing a vertical groove for this, and the processing is troublesome and expensive. Also, in the case of a synthetic resin holding band, using a material having elasticity makes it possible to manufacture a holding band with a simple structure and at a low cost. However, there is a drawback in that it is not possible to perform plating with gold or the like while it is fitted in the holding band.

In view of the above situation, the present invention easily and inexpensively imparts conductivity to a retaining band of a contact pin made of an elastic synthetic resin, elastically retains the contact pin, and the contact pin is made of metal. The purpose of the present invention is to provide a retaining band for a contact pin that can serve as an electrode during plating.

[0005]

A retaining band for a contact pin according to the present invention, which has been made to achieve the above object, has standing walls integrally provided side by side on both side edges of a continuous band made of elastic synthetic resin. The recessed grooves, into which the contact pins are tightly fitted, are formed in both standing walls at equal intervals along the longitudinal direction of the continuous strip and in a state of facing each other in the width direction, and the conductive metal is formed on at least one outer surface of both standing walls. It is a continuous coating of a thin film of The thin film may be formed in a mesh shape having a gap smaller than the cross section of the contact pin.

[0006]

By selecting the elastic synthetic resin as the material for the continuous strip, the contact pin can be elastically held, and the outer surface of at least one standing wall is continuously covered with a thin film made of a conductive metal. By wearing
Ensure continuity between all contact pins and the retention band. Also,
By forming the thin film in a mesh shape having a gap smaller than the cross section of the contact pin, elasticity of the thin film itself is secured and peeling of the thin film due to deformation of the holding band body is prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a contact pin holding band according to the present invention will be described below in detail with reference to the drawings. In the retaining band of the contact pin shown in FIG. 1, standing walls 2 and 2 are integrally juxtaposed on both side edges of a continuous strip 1 made of an elastic synthetic resin, and the contact pins 3 are fitted to both standing walls 2 and 2. Retaining band body 7 formed by forming recessed grooves 4 at equal intervals along the longitudinal direction of continuous strip 1 and facing each other in the width direction, and one of standing walls 2 and 2 The thin film 5 is continuously applied to the outer surface of the wall 2.

The retaining band of the contact pin is formed by extruding an elastic synthetic resin into a U-shape and forming a thin film 5 having a width substantially equal to the height of the standing wall 2 before the synthetic resin is cooled and solidified. The concave grooves 4 and 4 to be adhered and forming a pair are provided facing each other at a pitch equal to the pin interval of the connector to be manufactured,
In the center of the continuous strip 1, the feed holes 8 for each pitch are provided in a line along with the concave grooves 4 and 4 forming a pair. The presence of the feed hole 8 enables the contact pin 3 to be delivered and positioned synchronously via the holding band.

In the manufacturing process, the contact pins 3 that have been cut and molded are bridged and closely fitted in the recessed grooves 4 and 4 of the holding band facing each other, and a predetermined number is set according to the number of pins to be implanted in the connector. Although the non-fitting region of several pitches is provided for each number, it is wound in a spiral shape.
The thickness is set to be slightly smaller than the thickness of the contact pin 3, and by fitting the contact pin 3, the standing wall 2 made of synthetic resin is deformed in accordance with the side surface of the contact pin 3 and attached to the outer surface of the standing wall 2. Thin film 5 and contact pin 3
Come into contact with. Therefore, if a power source is connected to the thin film 5 of the holding band when plating is performed, it is possible to supply electric charges of the same polarity (cathode) to all the contact pins 3 fitted in the holding band.

If the thin film 5 is formed in a mesh shape having a gap 6 smaller than the cross section of the contact pin 3 as shown in FIG. 3, even if the holding band main body 7 is bent up and down, the gap 6 between the fibers 9 is formed. Since the shape of the thin film 5 is buffered and can follow the deformation of the holding band body 7, peeling is less likely to occur than when the thin film 5 having no gap 6 is applied, whereby only the specific contact pin 3 is electrically charged. It is possible to prevent the electrical insulation. The net-like thin film 5 may be formed in a state where the meridians and the latitude lines intersect with each other as described above, or may be formed in a non-woven fabric in which the fibers 9 of the extremely thin conductive metal overlap in a random direction. .

When the thin film 5 having no gap 6 is formed, a slit 10 may be appropriately provided below the thin film 5 in order to prevent the thin film 5 from peeling or cracking.
For example, if wedge-shaped, rectangular-shaped, and keyhole-shaped slits 10 are provided at the same pitch as the recessed grooves 4 and zigzag patterns are formed alternately with the recessed grooves 4, good results can be obtained in terms of preventing peeling of the thin film 5. Not only that, the elasticity of the holding band is not significantly impaired, so that the thin film 5 can be attached to a plurality of surfaces of the holding band body 7, and the amount of charges supplied to the contact pins can be increased.
It is possible to efficiently perform the plating treatment. For the material of the thin film 5, needless to say, a metal having a high conductivity is preferable, and for example, a copper alloy or the like is suitable.

The holding band of the contact pin according to the present invention is constructed as described above, and by tightly fitting it in a part of the concave groove 4 of the standing wall 2, all the held contact pins 3 are surely made of a conductive metal. The thin film 5 or the fiber 9 is contacted and electrically connected.

[0013]

As described above, by using the contact pin retaining band according to the present invention, the contact pin can be reliably retained without impairing the elasticity of the elastic synthetic resin, and the manufacturing can be performed relatively easily and inexpensively. . Moreover, since the contact pin can be plated while being held in the holding band, the contact property and corrosion resistance of the contact pin can be easily improved, which contributes to the provision of a good-quality and inexpensive connector.

Further, if the thin film is formed in a net shape having a gap smaller than the cross section of the contact pin, peeling of the thin film due to deformation of the holding band body can be prevented, and at the same time,
For example, even if a thin film is applied to the outer surface of both standing walls or the upper surface of the continuous strip, the elasticity of the holding strip can be sufficiently ensured. Therefore, it is possible to provide thin films on a plurality of surfaces and improve the contact between the contact pin and the thin film and the plating efficiency of the contact pin.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a retaining band for a contact pin according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of the holding band.

FIG. 3 is an enlarged perspective view of an essential part showing a similar example of a retaining band for a contact pin according to the present invention.

4 (a), (b), and (c) are side views in which a holding band according to the present invention is provided with slits.

[Explanation of symbols]

 1 continuous strip 2 standing wall 3 contact pin 4 concave groove 5 thin film 6 gap

Claims (2)

[Claims] 1. A continuous strip (1) made of an elastic synthetic resin.
The standing walls (2, 2) are integrally provided side by side on both side edges, and the standing grooves (2, 2) are provided with a concave groove (4) in which the contact pin (3) is tightly fitted. 1) are formed at equal intervals along the longitudinal direction of 1) and face each other in the width direction, and a thin film (5) made of a conductive metal is continuously formed on the outer surface of at least one of the standing walls (2, 2). A retaining band for a contact pin, which is characterized in that it is adhered to. 2. The contact pin retaining band according to claim 1, wherein the thin film (5) comprises a contact pin (3).
A retaining band for a contact pin, characterized in that it is formed in a mesh shape having a gap (6) smaller than the cross section of the contact pin.