JPS6157664B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact for a connector that is brought into contact with a pattern provided on a printed board to conduct electricity.

Conventional contacts for connectors are formed by press punching from a plate-shaped material as shown in FIG. A burr part 3 is formed. Contact body 1 having such a droop
When bent with the recess 2 on the outside as shown in Fig. 3, the flat part of the contact portion 4 becomes smaller than the press punching width due to the influence of the recess 2 as shown in Fig. 4, and this can be used as a high-density connector. When configured, the contact reliability was greatly affected by variations in contact position accuracy and dimensional accuracy of the printed board and other contact partners, resulting in contact failure.

In addition, attempts have been made to improve the precision of related dimensions in order to avoid these contact failures, but this has resulted in drawbacks such as a decrease in yield and a rise in prices.

Furthermore, by using a rectangular wire in the prior art, a cross-sectional shape with no droop 2 as shown in FIG. Were present. However, the terminal using this conventional method is
Since the wire has a rectangular cross section, the terminal has the same cross-sectional shape as shown in FIG. 12. For this reason, it is not possible to freely select the width dimension of the terminal body 1' in accordance with the stress generated in the terminal 1'. In particular, as shown in FIG.
It is difficult to set up Although it is possible to construct a slightly wider part by plastically working a part of the wire material into a shape of rolling, the processing degree (rolling rate) is limited because the processed part becomes thin.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional technology, to enable the width dimension of each part to be arbitrarily set using a press-punched material, to have high contact reliability, and to reduce costs by improving yield. The purpose of the present invention is to provide a contact for a connector that is capable of

The present invention eliminates or minimizes the droop at the corners of the press punched portion by performing press punching and shaving on a plate-shaped material used as a contact material, and then performs the next press bending process. Taking advantage of the phenomenon in which both shoulders of the press punched part bulge due to plastic deformation during the process, we have created two shoulders on the left and right (i.e., the areas along the edges on both sides of the convex side formed by bending). ) is used as a contact point.

Next, embodiments of the connector contact according to the present invention will be described with reference to FIGS. 5 to 9.

The contact body material 1 is formed into a prismatic shape as shown in FIG. 5 by punching a plate-like material. In this press punching process, the contact part 5 of the present invention is shaved to form a smooth flat surface (see FIG. 6), and then the contact body material 1 formed in this way is Press bending is performed as shown in the figure.

By this press bending process, the contact portion 5 has a cross-sectional shape as shown in FIG. 8, with two corner portions being raised by plastic deformation to form contact portions 6, 6.

Contact body 1 manufactured as above
When configured as a connector that is attached to the connector main body 7 shown in FIG. 9 and fitted with the printed board 8,
As shown in FIG. 11, two points come into contact with the pattern 9.
Therefore, as shown in FIG. 10, the reliability of contact is higher than that of conventional connectors that make contact at one point. That is,
The probability of poor contact due to dust etc. on the pattern part is 1/2
Reduce to Furthermore, the fitting dimensional precision between the pattern 9 and the contact portion is more relaxed in the contact portion 6 of the present invention shown in FIG. 11 than in the contact portion 2 shown in FIG. 10. That is, the first
If the amount of deviation is the same in Figures 0 and 11, a contact failure as shown in Figure ₁₀ will occur, and
In Figure 1, contact occurs at part _D2 , reducing the chance of contact failure. Therefore, it is advantageous in terms of the yield regarding the dimensional accuracy of the connector and the yield regarding the dimensional accuracy of the printed board.

In short, according to the present invention, the contact reliability is approximately 2
The contact failure rate due to separation from the pattern portion is significantly reduced.

In addition, in the present invention, since the contact material is formed by punching out a plate-shaped material with a press, the width dimension can be arbitrarily set during this press punching. For example, the fixing part shown in FIG. It is also easy to construct a wide portion such as 10.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a part of a conventional contact body, Fig. 2 is a sectional view of the same as above, Fig. 3 is a perspective view of a contact obtained by bending the main body of Fig. 1 by press bending, and Fig. 4 is a perspective view of a part of a conventional contact body. The figures are a sectional view of FIG. 3, FIG. 5 is a perspective view showing a contact body according to the present invention, FIG. 6 is a sectional view of the same, FIG. 7 is a perspective view of a part of the contact of the present invention, and FIG. The figures are a sectional view of Fig. 7, Fig. 9 is a front view showing the state in which it is used as a printed board connector, Fig. 10 is a sectional view showing the contact state between the conventional contact and the printed board pattern, and Fig. 11 is the main FIG. 12 is a perspective view of a terminal body formed by a conventional contact; FIG. 13 is a perspective view of a terminal body molded using the contact of the present invention. . 1...Contact body, 5...Contact part, 6...
Contact part, 10... Fixed part.

Claims (1)

[Claims] 1 A contact for a connector that contacts and conducts with a pattern provided on a printed board, in which a plate-shaped material is press punched and subjected to shaving to form a contact body material, and then the contact body material is A contact for a connector, characterized in that the convex side surface formed by the above bending process is raised along both edges thereof by bending, and the raised parts are used as contact points with the pattern.