JPS60249270A - Connecting terminal - 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 a connection terminal built into a connector housing.

For example, a female connecting terminal having a receiving part for connecting with a plug-in connecting terminal described in Japanese Patent Publication No. 55-10104,
The movable contact piece may break due to fatigue due to repeated prying of the plug-in connection terminal, or the movable contact piece may become permanently deformed beyond its elastic limit due to excessive prying force and lose its elastic pressing force, resulting in electrical contact failure. Often, the durability of this type of connection terminal is relatively low.

An object of the present invention is to provide a connection terminal that is resistant to prying force, has durability, and has good electrical connection characteristics. A female connecting terminal is formed by punching out a metal plate and has a connecting portion having a substantially rectangular cylindrical cross section. A movable contact piece whose side plate is curved inward to form a free end on the front or rear side, and a regulating piece is provided downward from the upper plate to restrict excessive displacement of the movable contact piece. It is characterized by:

The present invention will be explained in detail based on illustrated embodiments.

The drawing shows a connection terminal according to an embodiment of the invention.

This connection terminal is formed by punching and bending a single conductive metal plate. The connection terminal has a connection part l and a wire crimping part 2, and the wire crimping part 2 is provided with a core wire crimping part 3 and a covering crimping part 4, each of which has a U-shaped cross section. .

The connecting portion 1 is formed by bending a metal plate into a substantially rectangular tube shape, and the upper side thereof is an overlapping portion 5 having a double structure in which metal plates are overlapped with each other. The metal plate on the lower side of this overlapping portion 5 constitutes a movable contact piece 6 which is curved inward in an arc shape and has a spring property for the plug-in connection terminal. This movable contact piece 6 is supported by the rear part, and has a free end 7 at its front end, but may also have its rear end free. Further, two parallel regulating pieces 8 are projected downward from a part of the upper metal plate to prevent excessive deformation of the movable contact piece 6. Further, the front end 8 of the upper metal plate is bent downward to serve as a stopper 9 that engages the free end 7 of the movable contact piece 6 when the movable contact piece 6 is extended. In addition, the metal plate on the bottom side has two parallel slits along the longitudinal direction.
0.11, and the plate material between them is a fixed contact piece 12 whose bottom is raised in the form of a long strip, and the distance between this part and the movable contact piece 6 is narrow. Furthermore, as shown in FIGS. 5 and 6, parts 13 and 14 of the upper and lower metal plates in the overlapping portion 5 are caulked together to prevent deformation of the cross section of the connecting portion 1.

In use, this connection terminal is accommodated in the housing of the connector and is fitted with a plug-in connection terminal (not shown). The plug-in connection terminal is guided inside by the inclined surfaces of the movable contact piece 6 and the fixed contact piece 12, and is elastically sandwiched between the movable contact piece 6 and the fixed contact piece 12. At this time, the movable contact piece 6 is elastically deformed, and its spring force strongly presses the plug-in connection terminal toward the fixed contact piece 12 to establish conductive contact. By providing the regulating piece 8 and the stopper 9 on the metal plate above the overlapping part 5, even if an excessive prying force from the plug-in connection terminal is applied to the movable contact piece 6,
The movable contact piece 6 is supported by these, and its rigidity increases rapidly, and its deformation resistance becomes large, so that it resists the prying force from the plug-in connection terminal, and no further excessive deformation occurs. The position of the regulating piece 8 is within the elastic limit of the movable contact piece 6, and when the movable contact piece 6 is released from the prying force, the movable contact piece 6 is separated from the regulating piece 8 and returns to its original position.

In the present invention, the fixed contact piece 12 is formed opposite to the movable contact piece 6, but the fixed contact piece 12 does not have to be intentionally extended from the bottom surface, but may be a flat fixed contact part.

As explained above, in the connecting terminal according to the present invention, the cross-sectional structure of the connecting part is approximately rectangular cylindrical, the upper part is a double structure, and the lower metal plate is a movable contact piece, so that the plug-in connecting terminal There is no risk of permanent deformation of the movable contact piece due to prying force, and a normal pressing force against the plug-in connection terminal can be maintained at all times.

[Brief explanation of the drawing]

The drawings show one embodiment of the connecting terminal according to the present invention, and FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a bottom view, and FIG. 4 is a vertical cross-sectional view of the connecting part. Figure 5 is a cross-sectional view, Figure 6
The figure is a perspective view of essential parts. Reference numeral 1 denotes a connecting portion, 2 a wire crimping portion, 5 an overlapping portion, 6 a movable contact piece, 8 a regulating piece, 9 a stopper, and 12 a fixed contact piece. Patent applicant: Nissan Motor Co., Ltd. Shinagawa Automotive Wire Co., Ltd.

Claims (1)

[Claims] 1. A female connecting terminal formed by punching out a single metal plate and having a connecting portion having a substantially rectangular cylindrical cross section, the upper side of the connecting portion being formed by overlapping the metal plates with each other. The lower plate of the overlapping part is curved inward to form a movable contact piece with the front or rear end as a free end, and excessive displacement of the movable contact piece from the upper plate is avoided. A connection terminal characterized by having a regulating piece facing downward. 2. The connection terminal according to claim 1, wherein the front end of the movable contact piece is a free end, and the front end of the plate above the overlapping portion is bent downward to serve as a stopper for the free end. . 3. The connection terminal according to claim 1, wherein the upper and lower plates of the overlapping portion are caulked together. 4. The connection terminal according to claim 1, wherein a fixed contact piece is formed on the lower side of the connection portion, a part of which is raised inward.