JPH073590Y2 - Short-circuit socket - Google Patents

Description

[Detailed Description of the Invention] [Outline] The present invention relates to a socket (hereinafter referred to as a short-circuit socket) for connecting between two plug pins mounted on a printed wiring board, and particularly aims to reduce the insertion force into the plug pin and reduce the cost. With regard to the short-circuit socket, it is possible to provide a short-circuit socket that has a small insertion force when mounted on the plug pin and simplifies the molding die of the housing to reduce the manufacturing cost. And a housing having one guide hole for guiding a pair of plug pins in common, and two contact portions contacting opposite surfaces of the pair of plug pins facing in the insertion direction of the plug pin. Has a substantially S-shaped contact piece formed by press-fitting into the guide hole of the housing so as to separate a space into which both plug pins are inserted. It is composed of fixed contacts.

[Field of Industrial Application] The present invention relates to a socket (hereinafter referred to as a short-circuit socket) for connecting between two plug pins mounted on a printed wiring board, and particularly, to reduce the insertion force into the plug pin and reduce the cost. Regarding the designed short-circuit socket.

Recently, in order to semi-fixedly switch the circuit on the printed wiring board, two examples of plug pins are mounted instead of the changeover switch, and a method of connecting predetermined plug pins with a short-circuit socket according to the application is a method. It has come to be widely used because of its large cost and space reduction effect.

Therefore, there is a strong demand for a short-circuit socket that is highly reliable and easy to insert and remove.

[Conventional technology]

 FIG. 3 is a view showing a conventional short-circuit socket.

In the figure, the short-circuit socket has a housing 1 made of an insulating material molded product and a contact 3 made of a pressed product of a metal spring material. Housing 1
Has two through holes 11 into which plug pins are inserted on the front surface (lower side in the figure), and a pair of spring pieces 31 bent in a contact shape are connected by upper and lower connecting portions 32, 33. There is.
Then, the two inserted plug pins 2 come into contact with the contact point portion 31a at the apex of the spring piece 31 of the contact exposed in each through hole 11, and are short-circuited at the connecting portions 32, 33 at the upper and lower ends.

[Problems to be solved by the device]

By the way, the short-circuit socket has a smaller number of two poles than the multi-pole connector, and therefore has a small outer shape. On the other hand, in order to maintain a stable contact state for a long period of time, it is necessary to increase the force of the spring to increase the contact force, and thus the force required for insertion also increases. However, since the outer shape is small, it is difficult to apply the insertion force when the user holds the device by grasping it with his fingertips, and there is a problem that the insertion operation is troublesome. There is also a problem that the insulator is complicated and the molding die becomes expensive.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a short-circuit socket which has a small insertion force when mounted on a plug pin and which simplifies the molding die of the housing to reduce the manufacturing cost. To aim.

[Means for Solving the Problems]

In order to solve the above problems, the short-circuit socket of the present invention is a short-circuit socket for connecting a pair of plug pins to be inserted, and a housing having one guide hole for commonly guiding the pair of plug pins. The two contact portions that come into contact with the surfaces of the pair of plug pins that face each other have a substantially S shape formed in the insertion direction of the plug pins.
A short-circuit socket according to the present invention comprises a contact having a letter-shaped contact piece and a contact press-fitted in a guide hole of the housing so as to separate a space into which both plug pins are inserted.

[Action]

When inserting the pair of plug pins, the contact portion on the inlet side presses and flexes one plug pin, and when further inserted, the contact portion on the inner side presses the other plug pin. Since each plug pin abuts and bends the contact portion at different points in time, the component of the insertion force that acts to bend the spring is dispersed, the overall insertion force is reduced, and the operability at the time of insertion is improved.

Since only one guide hole needs to be formed in the housing, the mold is simpler and easier to manufacture than the conventional shape having two guide holes for individually guiding the respective plug pins.

〔Example〕

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of the short-circuit socket of the present invention, and FIG. 2 is a sectional view showing the operation of the short-circuit socket of FIG.

In FIG. 1, 2a and 2b are a pair of plug pins to be short-circuited by inserting a short-circuit socket, which are provided on a printed board or the like at predetermined intervals.

Reference numeral 4 denotes a housing, which is made of an insulating resin mold, and is a substantially rectangular box-shaped member having a rectangular guide hole 41 formed on one surface (plug pin insertion side). This guide hole 41
The width W in the longitudinal direction of the pair of plug pins 2a, 2b
Is dimensioned to receive and guide its outer surface. The press-fitting groove 41 is formed in the middle of the guide hole 41 in the longitudinal direction.
a is formed partway in the depth of the guide hole. Reference numeral 5 is a contact, which is manufactured by pressing a thin plate of a copper alloy spring material or the like and then performing contact plating or the like as required.
A wide press-fitting portion 52 having 52a and a contact piece 51 extending from the center of the press-fitting portion form a substantially T shape in a side view, and the edge of the press-fitting portion 52 is press-fitted into the press-fitting groove of the housing as indicated by arrow A. As a result, the rectangular guide hole 41 is mounted so as to be partitioned into two spaces into which a pair of plug pins are inserted.

The contact piece 51 is bent in a substantially S-shape in the insertion direction of the plug pin (backward direction of the guide hole), and the two vertices of the S-shape form contact parts 51a and 51b. Height h
Has a dimension larger than the distance H between the facing surfaces of the pair of plug pins 2a, 2b to be inserted, and is designed to contact the facing surfaces of the respective plug pins with a predetermined contact force to short-circuit between them.

In FIG. 2, when the plug pins 2a and 2b are inserted into the short-circuit socket 4 having the above-mentioned structure, first, as shown in (a), the contact part 51a on the inlet side abuts on one plug pin 2b and the contact piece 51 moves to the other plug pin 2a. When the plug pin 2a is further displaced to the side and further inserted, the other plug pin 2a comes into contact with the contact portion 51b on the inner side as shown in (b), and the tip side of the contact piece 51 is displaced in the opposite direction.
As a result, the two plug pins are connected with a predetermined contact force by the two contact portions. In this way, since the two contact portions are not displaced at the same time during the plug pin insertion process, the insertion force is greatly reduced, and the insertion operation of the short-circuit socket becomes extremely easy.

[Effect of device]

As described above, according to the present invention, it is possible to provide a short-circuit socket which has a small insertion force when mounted on a plug pin, and which simplifies the molding die of the housing to reduce the manufacturing cost.

[Brief description of drawings]

1 is an exploded perspective view of a short-circuit socket of the present invention, FIG. 2 is a sectional view showing the operation of the short-circuit socket of FIG. 1, and FIG. 3 is a view showing a conventional short-circuit socket. In the figure, 2a, 2b ... a pair of plug pins, 4 ... housing, 41 ...
… Guide hole, 5 …… Contact, 51 …… Contact piece, 51a, 51
b ... contact part, 52 ... press-fit part.

Claims (1)

[Scope of utility model registration request] 1. A short-circuit socket for connecting a pair of plug pins (2a, 2b) to be inserted, wherein one guide hole (41) for commonly guiding the pair of plug pins (2a, 2b) is formed. The housing (4) and two contact portions (51a, 51b) contacting the facing surfaces of the pair of plug pins (2a, 2b) are formed in a substantially S-shaped contact piece (51a, 51b) formed in the insertion direction of the plug pin ( 51),
A short-circuit socket comprising: a contact (5) press-fitted and fixed in a guide hole (41) of the housing so as to separate a space into which both plug pins are inserted.