JPS58137982A - Contact - 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 The present invention relates to improvements in twin contacts used, for example, in direct printed circuit board connectors.

As shown in Figure 181 and Figure IJ2, the insulator I is used as a conventional direct type printed circuit board connector.
A large number of contacts C are installed inside the insulator I.
There is one in which a plug part PWB of a printed circuit board PW is inserted into the inner part of the contact plug so as to be directly electrically connected to and separated from a spring contact part C8 of a contact C. As shown in Fig. 133, there are two types of contacts C used in connectors with such a configuration: double-shaped contacts 01, and twin-shaped contacts C (as shown in Figs. 84 and 5).
There is a j.

Generally twin contact C! is a monoclonal contact) CI
In terms of vibration resistance and contact cylinder effect compared to
Although it is advantageous, in order to obtain a contact pressure equivalent to that of a multilayer contactor (CJ), for example, if the plate thickness is the same, the width dimension (
The twins Kanayama) have no choice but to grow. Therefore, compared to the multilayer contact C1, it is necessary to make the conductive/l turn of the printed circuit board PW to be connected wider, which hinders the compatibility of the printed circuit board PW.

Therefore, the present invention was made in view of the above circumstances, and it maintains the advantages of the twin-shaped contacts, maintains the width of the contact f ind narrow, and is compatible with connectors having double-shaped contacts. The purpose is to provide a certain contact.

Hereinafter, embodiments of the contact according to the present invention will be described with reference to the inner surface. First, the configuration of the first embodiment of the present invention will be explained with reference to FIGS. 6 and 7. That is, the twin contact piece C of the conventional twin contact piece Cffi
A slit band-like protruding contact portion LC that bifurcates is provided on the curved apex side of each of 1l and C12.

Next 4 = The configuration of 12 embodiments of the present invention will be explained with reference to FIGS. 8 and 9. A sleeve in which the cross section in the plate thickness direction of the contact portion that is the curved portion of the conventional twin contact C2 twin contact pieces C21 and C12 is on the curved outer surface side and bifurcated into two)
It is formed into an eight-figure shape as a whole so that a vertex P is obtained on the side closer to a.

In this way, in the first embodiment of the present invention, the twin contact piece c
xz, cxz with band-shaped protruding contact parts LC, and the same second
In the embodiment, each twin contact piece cxx of each contact C2
, czz are formed into an eight-figure shape so that the apexes P are obtained on the side closer to the slit 8, so that the twin contacts C2 have the advantage of high contact pressure, excellent vibration resistance, and excellent contact cleaning effect. Furthermore, since the width of the contact point can be kept narrow, compatibility with connectors having the multilayer contact C1 is improved. Also from something like this.

The electrical characteristics (conductivity/withstand voltage between l turns) of the printed circuit board FW can be maintained, and furthermore, the cost increase of the printed circuit board PW, especially the plating cost can be prevented.

Note that the present invention is not limited to the embodiments described above, and can be implemented with various modifications without changing the gist of the invention.

According to the invention described above, it is possible to maintain the advantages of the twin contact and to keep the width of the contact 4 India narrow,
Furthermore, it is possible to provide a contact that is compatible with a connector having a multilayer contact.

[Brief explanation of the drawing]

Figures 1 and 2 are exploded perspective views and cross-sectional views to explain the outline of a direct printed board connector, and Figures 3 and 4 show different conventional contacts. 5 is a perspective view of the contact shown in FIG. 4, FIG. 6 is a perspective view of the contact shown in FIG. 4, and FIG. 7 is a perspective view showing one embodiment of the contact according to the present invention, and FIG. 8 and 9 are perspective views showing other embodiments of the contact according to the present invention, and 4 sectional views taken at the same position as in FIG. 4:
FIG. FW...Printed circuit board, C...contact, ■...
・Inverter, CI... multiplex contact, C2
...Twin-like contact having twin contact pieces cxx and c2s, S...Slit, LC...Twin-like contact piece C21,
C: Belt-shaped protruding contact portion formed in 1M, P... contact piece cxx, czx on slit 8 side 1: vertex having.

Claims (1)

[Claims] (1) When the conductive part at the end of the printed circuit board is inserted into the connector body, the apex is curved toward the printed board side in order to establish electrical continuity with the conductive part, and it branches into two branches at the tip. In a contact for a printed circuit board connector equipped with twin contact pieces, a strip-shaped protruding contact portion is generally provided on the curved apex side of each of the twin contact pieces, approximately parallel to the slit that bifurcates, and closer to the slit. Contact characterized by being company. +217"9 When the conductive part at the end of the printed circuit board is inserted into the connector body, it is curved so as to form an apex toward the printed circuit board side in order to establish electrical continuity with the conductive part, and In a contact of a printed circuit board connector equipped with branched twin contact pieces, the cross section in the plate thickness direction of the curved contact portion of each twin contact piece has an apex on the curved outer surface side and on the side closer to the slit that bifurcates. A contact characterized in that the entire body is molded into a figure-eight shape.