JPH0628176B2 - Socket - Google Patents

Description

The present invention relates to a socket, and a structure of a contact terminal into which a connection pin is inserted and which is in conductive contact with the outside of the connection pin.

(Prior Art) Conventionally, as a structure of a contact terminal of a socket, for example,
As shown in FIGS. 4 and 5, the contact terminal 3 is arranged in the cylindrical terminal hole 2 of the socket body 1.
Is provided in a cylindrical shape, a recess 4 having a diameter smaller than the outer diameter of the connecting pin is provided on the upper part, and slits 5 and 5 for expanding in the radial direction when the connecting pin is inserted outside. Are provided at two locations along the axial direction. Then, when the connection pin is inserted into the contact terminal 3, the recess 4 is in conductive contact with the outside of the connection pin.

In the contact terminal 3 having such a structure, the contact between the recess 4 and the connection pin is point contact, the contact area is small, and the conductivity between the connection pin and the contact terminal 3 is poor. Moreover, since the contact terminal 3 needs to be cylindrical and the recess 4 needs to be provided,
There is a problem that the workability of the contact terminal 3 is poor and the accuracy is also poor.

Further, for example, as described in Japanese Utility Model Publication No. 57-86276 or Japanese Utility Model Publication No. 58-148883,
By forming the contact pin into a substantially triangular shape from the base terminal plate and the movable terminal plates provided on both sides of the base terminal plate, the contact terminal is connected to the connection pin and each terminal. The plate comes into contact along the axial direction, the conductivity between the connection pin and the contact terminal is improved, and the processing of the contact terminal is facilitated.

(Problems to be Solved by the Invention) As described above, even when the connection pin insertion portion is formed in a substantially triangular shape, each movable terminal plate expands without restriction when the connection pin is inserted, so that the contact pressure is sufficient. It is not secured, and the conductivity between the connection pin and the contact terminal is not sufficient.

Further, the contact terminal is arranged in the terminal hole of the socket body, but when the terminal hole has a circular shape as shown in FIGS. 3 and 4, or the shape is such that a gap is formed around the contact terminal. In this case, the position of the contact terminal in the circumferential direction in the terminal hole is not fixed, which may make the pin connection unstable. Moreover, when the contact terminal is installed in the socket body in the circumferential direction and assembled to the socket body, the assembly becomes complicated.

The present invention has been made in view of the above problems,
It is an object of the present invention to provide a socket that has both expansion restriction of a movable terminal plate for improving conductivity between a connection pin and a contact terminal and positioning of the contact terminal with respect to a terminal hole of a socket body.

[Structure of Invention]

(Means for Solving the Problems) The present invention provides a contact terminal into which a connection pin is inserted and is in conductive contact with the outside of the connection pin, and a socket body having a terminal hole in which the contact terminal is arranged. The contact terminal,
Regulations for forming a connecting pin insertion portion from the base terminal plate and movable terminal plates provided on both sides of the base terminal plate in a substantially triangular shape, and for restricting expansion of both movable terminal plates at the tip of each movable terminal plate. A piece is provided, and the socket body has an expansion preventing groove in which the regulating piece is arranged in the terminal hole.

(Operation) In the present invention, when the contact terminal is arranged in the terminal hole of the socket body, the restriction piece provided on the movable terminal plate of the contact terminal is arranged in the expansion prevention groove of the terminal hole, and the terminal hole of the socket body is formed. The contact terminal is positioned with respect to.

Then, when the connection pin is inserted into the substantially triangular connection pin insertion portion of the contact terminal, each terminal plate comes into contact with the connection pin along the axial direction. Each movable terminal plate of the contact terminal tries to expand with the insertion of the connection pin, but since the restriction piece of each movable terminal plate is arranged in the expansion prevention groove of the socket body,
The expansion of the movable terminal plate is restricted, and each terminal plate comes into contact with the connection pin with a sufficient contact pressure, so that the conductivity between the connection pin and the contact terminal is improved.

(Embodiment) Hereinafter, a configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2, 11 is a metal contact terminal, and this contact terminal 11 is a flat base terminal plate 12 and is bent so that the respective ends are aligned from both sides of the base terminal plate 12. Is formed in a substantially triangular cross section from a pair of flat plate-shaped movable terminal plates 13, 13 provided with a connecting pin P having a circular cross section between the opposing inner side surfaces of the respective terminal plates 12, 13, 13. A substantially triangular connecting pin inserting portion 14 is provided. In addition,
The dimension between the facing inner surfaces of the terminal plates 12, 13, 13 of the connection pin insertion portion 14 is formed smaller than the dimension when the connection pin P is inserted.

At the upper end of each terminal plate 12, 13, 13 is an introduction piece 1 for inclining outward and guiding the connection pin P to the connection pin insertion portion 14.
5,15,15 are provided, and the base terminal board 12 and the movable terminal board 1 are also provided.
Slits 17 and 17 are provided in the upper portions of the connecting portions 16 and 16 at the tops of the three and 13, and further, restricting pieces 18 and 18 are provided in parallel at the tips of the pair of movable terminal plates 13 and 13, respectively. Has been done.

Then, the contact terminal 11 is arranged in a cylindrical terminal hole 22 of the socket body 21 as shown in FIG.
The restriction pieces 18, 18 are arranged in an expansion prevention groove 23 formed on one side of the groove 22 along the axial direction.

Next, the operation of this embodiment will be described.

When the connection pin P is inserted into the connection pin insertion portion 14 of the contact terminal 11, both movable terminal plates 13 and 13 swing in the expanding direction, and between the inner side surfaces of the terminal plates 12, 13 and 13 facing each other. The connection pin P is sandwiched, and the terminal plates 12, 13, 13 are in conductive contact with the outside of the connection pin P in a pressure contact state.

In this conductive contact, since the terminal plates 12, 13, 13 are in contact with the outside of the connection pin P along the axial direction, the contact area is large, and the conductivity between the connection pin P and the contact terminal 11 is good. You can

Moreover, since the restricting pieces 18, 18 are brought into contact with the expansion preventing groove 23, expansion of the movable terminal plates 13, 13 on the tip side is prevented, so that each terminal plate 12, 13, 13 is connected to the connection pin P. On the other hand, a sufficient contact pressure can be obtained, and the conductivity between the connection pin P and the contact terminal 11 can be further improved.

In comparison with the conventional contact terminal shown in FIGS. 3 and 4, the contact terminal 11 of this embodiment basically has a base terminal plate 12 and movable terminal plates 13 and 13 which are folded in a substantially triangular shape. Since it can be bent, it is easy to process and has good accuracy.

〔The invention's effect〕

According to the present invention, when the connection pin is inserted into the substantially triangular connection pin insertion portion of the contact terminal, each terminal plate comes into contact with the connection pin along the axial direction, and each movable terminal plate tries to expand. ,
Since the restriction piece of each movable terminal plate is arranged in the expansion prevention groove of the socket body, expansion of the movable terminal plate is restricted, and each terminal plate comes into contact with the connection pin with sufficient contact pressure, The conductivity between the connection pin and the contact terminal can be improved.

Moreover, when the contact terminal is placed in the terminal hole of the socket body, the restricting piece provided on the movable terminal plate of the contact terminal is placed in the expansion prevention groove of the terminal hole, so that the contact terminal to the terminal hole of the socket body is arranged. Can be easily positioned. Further, by positioning such contact terminals, stable pin connection can be performed, and the contact terminals can be easily assembled into the socket body.

Therefore, it is possible to provide a socket that has both the expansion restriction of the movable terminal plate and the positioning of the contact terminal.

[Brief description of drawings]

FIG. 1 is a perspective view of a contact terminal showing an embodiment of a socket of the present invention, FIG. 2 is a partially cutaway plan view of the contact terminal arranged in a socket body, and FIG. FIG. 4 is a side view in which a part of a state where the contact terminal of the socket is arranged in the socket body is cut away, and FIG. 4 is a plan view thereof. 11 ... Contact terminal, 12 ... Base terminal board, 13 ... Movable terminal board, 14 ...
Connection pin insertion part, 18 ... Regulating piece, 21 ... Socket body, 22
… Terminal holes, 23… Expansion prevention groove, P… Connection pin.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sato ▲ Sho ▼ 1-4-2-4 Mita, Minato-ku, Tokyo, Toshiba Electric Materials Co., Ltd. (56) References: SHO 58-148883 (JP, U) 57-86276 (JP, U)

Claims (1)

[Claims] 1. A contact terminal having a connection pin inserted therein for making conductive contact with the outside of the connection pin, and a socket body having a terminal hole in which the contact terminal is disposed, wherein the contact terminal is a base terminal. A connecting pin insertion portion is formed into a substantially triangular shape from movable terminal plates provided on both sides of the plate and its base terminal plate, and a restriction piece for restricting expansion of both movable terminal plates is provided at the tip of each movable terminal plate. The socket body is provided with an expansion preventing groove in which the restricting piece is arranged in the terminal hole.