JPH021022Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a receiving connection terminal provided with a movable contact piece that connects to a mating flat-blade insertion connection terminal.

[Conventional technology]

Conventionally, in this type of receiving connection terminal, the movable contact piece generally consists of a folded piece, so the movable contact piece may become fatigued and break due to repeated prying force of the insertion connection terminal, or may break due to excessive prying force. This has caused permanent deformation and loss of elastic pressing force, resulting in electrical contact failure, and has disadvantages in that its durability and reliability are insufficient.

[Purpose of invention]

The purpose of the present invention is to provide a highly reliable and durable connecting terminal that can reduce the degree of fatigue of the movable contact piece against the prying force caused by the insertion connecting terminal and prevent permanent deformation. There is a particular thing.

[Summary of the idea]

The gist of this invention to achieve the above objectives is as follows:
It consists of a single conductive metal plate, and has a substantially box-shaped connecting portion surrounded by a bottom plate, both side plates connected to the left and right side plates of the bottom plate, and a top plate made by bending these side plates inward and abutting each other, and a connecting portion of the bottom plate. The connecting terminal has a movable contact piece extending from the front and folded back into the connecting part, and the insertion connecting terminal is inserted between the movable contact piece and the fixed contact part of the top plate. hand,
A downwardly facing enclosure is formed by convex pieces extending integrally on both left and right sides of the free end of the movable contact piece,
A part of the bottom plate is cut away and a free end of an auxiliary elastic piece is inserted into the enclosure, with the back supported by the bottom plate and the front free end, and the auxiliary elastic piece makes the movable contact piece elastic. This is a connection terminal characterized in that it is supported by a.

[Example of idea]

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

The connection terminal 1 is formed by bending a single conductive metal plate, and roughly has a connection part 2 at the front for receiving a mating insertion connection terminal, and a wire crimping part 3 at the rear for connecting the wire. As is well known, in the section 3, the core wire crimping section 4 and the covering crimping section 5 each have a cross section U.
It is formed into a letter shape. The connecting portion 2 is formed into a substantially box shape by a bottom plate 6, side plates 7a, 7b continuous to the left and right sides of the bottom plate 6, and top plates 8a, 8b formed by bending these side plates 7a, 7b inward and abutting each other. There is.

The edges of both top plates 8a, 8b are butted together at boundary S, and elastic fixed contact portions 9a, 9 bulge inward across both top plates 8a, 8b.
b is provided. A movable contact piece 10 is provided inside the connecting portion 2 by extending the bottom plate 6 forward and folding it back. This movable contact piece 10 has a guiding part 12 following a folded part 11 that is gradually inclined higher to make it easier to receive an insertion connection terminal, and a contact part 13 near the free end faces the fixed contact part 9 described above. , an insertion connection terminal is inserted between them.

Further, near the free end of the movable contact piece 10, as illustrated in FIG. A free end 17 of an auxiliary elastic piece 16, which is formed by cutting a part of the bottom plate 6 at a constant width in the longitudinal direction and extending from the rear base toward the front, is inserted into this. This auxiliary elastic piece 16 is for increasing the elastic pressing force of the movable contact piece 10 and preventing excessive deformation of the movable contact piece 10, and even when the insertion connection terminal (not shown) is not inserted, The movable contact piece 10 is substantially in contact with the movable contact piece 10, or is close to the movable contact piece 10 to the extent that it is slightly separated from the movable contact piece 10, and when the insertion connection terminal is inserted, the movable contact piece 10 is elastically supported from below. There is.

Note that if the tips 14a of the convex pieces 14 are directed inward toward each other as shown in FIG. The position of the free end 17 of the can be kept within a supportable range at all times.

In the above embodiment, the top plates 8a and 8b are brought into contact with each other at the boundary S, and the fixed contact portion 9 is provided over both areas. The end edge may be bent into the interior of the connecting portion 2, and this bent end edge may be used as a fixed contact portion.

The connection terminal according to the present invention is mainly used by being housed in the housing of the connector, and receives the flat-blade insertion connection terminal of the mating connector between the fixed contact part 9 and the movable contact piece 10 to make an electrical connection. will be carried out.

[Effect of idea]

As explained above, the connection terminal according to the present invention is
When a mating flat-blade insertion connection terminal is inserted between the fixed contact part and the movable contact piece, the movable contact piece is elastically supported from below by the auxiliary elastic piece, so it cannot be moved. Due to the cooperation of the elastic pressing force of the contact piece itself and the elastic pressing force of the auxiliary elastic piece, the insertion connection terminal is pressed against the insertion terminal quite strongly, and a good conductive contact can be obtained. Additionally, even if an unreasonable prying force is applied to the movable contact piece from the insertion connection terminal, the deformation resistance of the movable contact piece is reinforced by the auxiliary elastic piece, preventing excessive deformation of the movable contact piece. Therefore, a connection terminal with excellent reliability and durability can be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the connection terminal according to the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a plan view, Fig. 3 is an end view, and Fig. 4 is a connection terminal. 5A and 5B are cross-sectional views of the relationship between the movable contact piece and the auxiliary elastic piece. 1 is a connection terminal, 2 is a connection part, 3 is a wire crimping part, 6 is a bottom plate, 7a, 7b are side plates, 8a, 8b are top plates, 9 is a fixed contact part, 10 is a movable contact piece, 11
1 is a folded part, 12 is a guide part, 13 is a contact part, 1
4 is a convex piece, 15 is a surrounding part, 16 is an auxiliary elastic piece, 1
7 is a free end.

Claims (1)

[Claims for Utility Model Registration] 1. A substantially box made of one conductive metal plate and surrounded by a bottom plate, both side plates connected to the left and right side plates of the bottom plate, and a top plate made by bending these side plates inward and butting them together. and a movable contact piece that extends from the front of the bottom plate and is folded back into the connection part, and a connecting terminal is inserted between the movable contact piece and the fixed contact part of the top plate. The connection terminal is adapted to be inserted, and has a downwardly facing enclosure formed by convex pieces extending integrally on both left and right sides of the free end of the movable contact piece, and a part of the bottom plate is inserted into the enclosure. The movable contact piece is supported elastically by the free end of an auxiliary elastic piece whose rear part is supported by the bottom plate and whose front end is a free end. Characteristic connection terminal. 2. The connection terminal according to claim 1, wherein the top plate is provided with a fixed contact portion that bulges inward. 3. The connection terminal according to claim 1, wherein both lower edges of the enclosing portion are bent inwardly to hold the auxiliary elastic piece.