TWI504071B - Contacting structure of contacts in ellectrical connector - Google Patents

Description

Contact structure of contact for electrical connector

The present invention relates to a contact structure of a contact for an electrical connector.

Conventionally, in the contact structure of the contacts for the electrical connectors, as shown in FIGS. 6A and 6B, it is known that the contact side surface 11 in the contact area of one of the contacts is provided in a linear shape. The grooves have cross-shaped and X-shaped concave portions 11a and 11b (see Patent Documents 1 and 2). A stable electrical connection is obtained by this configuration.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2006-228669

[Patent Document 2] International Publication WO2008/001459

However, in the contact structure of the conventional contact connector for electrical connectors, the depth of the groove is constant. In the process of forming the recess, it is difficult to adjust the depth thereof, and if it is too deep, the contact portion may be cracked after the contact portion is bent after the recess is formed. Further, when the concave portion is formed, since the concave portion is formed in two times, it is easy to stress concentrate and collapse when the concave portion overlaps, and cracking occurs. As described above, depending on the contact material used and the bending of the contact portion of the contact member, the easiness of occurrence of cracks is also different, and thus the problem of poor productivity of the contact member is caused.

The contact structure of the contact for an electrical connector of the present invention has been proposed to solve such a problem.

Here, the contact structure of the contact for the electrical connector of the present invention is fixed and provided at the female contact of the receptacle connector, and the position of the plug connector mated with the receptacle connector corresponding to the female contact is The contact portion of one of the fixed male contacts is integrally supported from the contact base in the longitudinal direction of the contact, and is bent and oriented toward the thickness of the contact. The side is convexly formed with a contact portion, and a first recessed portion and a second recessed portion are formed on the contact side surface of the contact portion, wherein the intersecting first recessed portion and the second recessed portion are formed. Is to form different depths.

According to the contact structure of the contact for an electrical connector of the present invention, the depths of the first concave portion and the second concave portion which are provided at the intersection of the contact portions are different, thereby suppressing the occurrence of cracks and improving productivity. As a result, the types of contact materials that can be used are also expanded, and the versatility is also improved. Further, the contact reliability in the contact portion is improved by the difference in depth between the first recessed portion and the second recessed portion. Moreover, the degree of freedom in designing the contact member is increased and the contact resistance at the time of insertion and removal is reduced.

The contact structure of the contact 1 for an electrical connector according to the present invention is a plurality of female contacts that are fixed and provided in a receptacle connector (not shown) as shown in FIGS. 1A to 1D, and are embedded in the receptacle connector. The plug connector (not shown) corresponds to the contact portion of the contact 1 of one of the male contacts that are fixed to the position of the female contact.

And the contact portion is integrally supported from the contact base 2 (welded to the printed circuit board or the like) in the longitudinal direction of the contact 1, and is bent toward the thickness direction of the contact 1 and is oriented toward the contact side. The convex portion is formed, and the first concave portion 4 and the second concave portion 5 which are X-shaped intersecting are formed on the contact side surface 3 of the contact portion.

The first and second recesses intersecting each other are formed by different depths.

[Example 1]

The contact 1 is, for example, a female contact that is fixed and provided in the housing portion of the contact of the receptacle connector. Further, the surface of the contact portion of the male contact on the other side that is in contact with it is flat. The tip end portion of the contact member 1 is formed by being bent inwardly to form a contact portion that is convex outward, and a first recess portion 4 and a second recess portion 5 that are X-shaped intersecting are formed on the contact side surface of the contact portion.

The first and second recesses 4, 5 are processed by a die, but the depth is as shown in FIG. 2C, the depth d1 of the first recess 4 is deep, and the depth d2 of the second recess 5 is The depth d1 of a recess 4 is shallower. In the present embodiment, the depth d1 of the first recess 4 is about 9 μm, and the depth d2 of the second recess 5 is about 3 μm. In this case, the deeper first recess 4 is first machined, and thereafter the second recess 5 is machined.

In the contact 1 of the first embodiment, the first recess depth d1=about 9 μm, the second recess depth d2=about 1.5 μm, the first and second, compared with the other contacts. When the recess is a contact of the same depth of the contact d1=d2=about 3 μm and the recess is not formed, the better one is: the first recess depth d1=about 9 μm, and the second recess depth d2. = about 3 μm>first recess depth d1=about 9 μm, second recess depth d2=about 1.5 μm>The first and second recesses are contacts of the same depth d1=d2=about 3 μm>contacts in which the recesses are not formed.

[Embodiment 2]

As shown in FIGS. 3A to 3C and FIGS. 4A to 4C, the contact members 1a are provided with cross-shaped first and second recesses 6, 7. The depth of the first recess 6 is deep, and the depth of the second recess 7 is shallower than the depth of the first recess 6. The other conditions in this embodiment are the same as in the first embodiment. Further, the first recessed portion 6 having a deeper depth is first processed, and thereafter, the second recessed portion 7 is processed.

[Example 3]

In the first and second embodiments, the first and second recesses 4 and 5, and the first and second recesses 6 and 7 are in the case of the cross section of the contact side surface 3, as in the case of 5A to 5C. As shown in the figure, the rising angle θ of the side wall surface 8 on which the concave portion is formed is an electrical contact performance between the case where the bottom surface of the concave portion is expanded and opened at an angle of 90° or more, and the case where it is gradually approached by 90°. Here, the solvent film is brought into contact with the surface of the contact on the other side of the contact by a predetermined pressing force. The film thickness of the solvent, one of which is about 3 μm.

The closer the angle θ is to 90°, the smaller the contact force of the corner portion R through the solvent. In other words, it has been found that sufficient contact reliability can be obtained without making the corner portion R extreme a minute radius r. Thereby, the degree of freedom in the design of the contact member can be expanded. Further, by not requiring the tip end of the corner portion R to be extremely minute r, the contact resistance at the time of insertion and removal can be reduced.

In the first and second embodiments, the first and second recesses 4 and 5 and the first and second recesses 6 and 7 are formed in a cross shape or an X-shape, but are not limited thereto, and are V-shaped. Equally intersecting recesses are also possible.

In this way, the contact material formed by the conventional concave portion having the same depth in an X shape or the like cannot be formed in the shape of the present invention, and the general use can be improved.

[Industry use possibility]

The contact structure of the contact of the present invention can be widely applied to the contact portion of the electrical contact.

1. . . Contact

1a. . . Contact

2. . . Contact base

3. . . Contact side surface

4. . . First recess

5. . . Second recess

6. . . First recess

7. . . Second recess

8. . . Side wall surface

11. . . Contact side surface

11a, 11b‧‧‧ recess

1A to 1D are each a side view, a front view, a plan view, and a cross-sectional view taken along line a-a of Fig. 1B of the contact for an electrical connector according to an embodiment of the present invention.

2A, 2B, and 2C are respectively a perspective view of the same contact member, a longitudinal sectional view of the same tip end portion, and a b-b arrow cross-sectional view of Fig. 2B.

3A, 3B, and 3C are respectively a side view, a front view, and a plan view of a contact for an electrical connector of another embodiment.

4A, 4B, and 4C are respective perspective views of the same contact member, a longitudinal sectional view of the same tip end portion, and a cross-sectional view of the same contact portion.

Each of Figs. 5A, 5B, 5C, and 5D is a cross-sectional view showing a different starting angle of the starting angle from the bottom surface of the side walls of the first recess and the second recess.

6A and 6B are partial front views showing a cross-shaped recess and a X-shaped recess in the contact portion of the contact of the conventional example.

1. . . Contact

2. . . Contact base

3. . . Contact side surface

4. . . First recess

5. . . Second recess

Claims (1)

A contact structure of a contact for an electrical connector, which is fixed and provided at a female contact of the receptacle connector, and a position at which a plug connector mated with the receptacle connector is fixed and disposed at a position corresponding to the female contact A contact portion of one of the contact members is integrally supported from the contact base portion in the longitudinal direction of the contact member, and is bent toward the thickness direction of the contact member and convexly formed toward the contact side. And a first recessed portion and a second recessed portion that intersect each other in a cross-shaped, X-shaped or V-shaped shape on the contact-side surface of the contact portion, wherein the intersecting first recessed portion and second recessed portion are formed Different depths.