JPH0455430Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is applicable to, for example, single-in-line
Regarding socket contacts for memory modules (SIMM).

(Prior art) Conventionally, as this type of socket contact a,
As shown in Fig. 4, a pair of contact pieces b curved in a dogleg shape are placed opposite each other, and a printed circuit board c is placed vertically between the pair of contact pieces b against the spring pressure of the contact piece b. Insert from the direction of the printed circuit board c and a pair of contact pieces b
It is known that the two are connected in a press-contact state.

Further, as shown in FIG. 5, after arranging the pair of curved contact pieces a' of the contact a to face each other and inserting the printed circuit board c between the pair of contact pieces a' from an oblique direction with a small force, It is known to stand upright and connect a printed circuit board c and a pair of contact pieces a' in pressure contact.

(Problem to be solved by the invention) In the former type of conventional socket contacts, when a large number of contacts A, for example 30 contacts each, are arranged in two rows, the insertion and removal force of the printed circuit board C into and out of the contacts A becomes considerably large. There was a problem that the connecting and disconnecting operations were difficult.

In addition, although the latter type of conventional socket contact has a small insertion/extraction force on the printed circuit board c to the contact a, it is necessary to tilt the printed circuit board c at an angle when inserting or removing the contact, so the socket with the contact a attached must be placed in close contact with the socket. If they are arranged in parallel, if the printed circuit board c is connected to an adjacent socket, the printed circuit board c will get in the way. Therefore, there was a problem that high-density mounting of sockets was not possible.

The purpose of the present invention is to solve these conventional problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a pair of contact pieces arranged at a distance that allows the printed circuit board to be inserted and removed with a small force, and the pair of contact pieces is pressed. a pair of pressing pieces, the pair of contact pieces are movable in the insertion direction with the printed circuit board when the printed circuit board is inserted into the space, and the pressing piece is configured such that the pair of contact pieces are movable in the insertion direction when the printed circuit board is inserted into the space. The pair of contact pieces is bent and pressed against the printed circuit board when the contact piece is moved to the printed circuit board.

(Function) When inserting a printed circuit board between a pair of contact pieces of a socket contact, the insertion force is small. After insertion, when the pair of contact pieces is moved in the insertion direction on the printed circuit board, the pair of contact pieces are bent by the pressing piece and pressed against the printed circuit board.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention.

In the figure, 1 is a socket contact, and 2 is a housing made of an insulating material that houses the socket contact 1. As shown in FIG.

The socket contact 1 includes a pair of contact pieces 1a arranged at a distance that allows a printed circuit board 3, which is a SIMM board, for example, to be inserted and removed with zero or small force;
A U-shaped base piece 1b that fixes the socket contact 1 in the housing 2, and a pair of contact pieces 1a are printed as shown in the third figure, interposed between the base piece 1b and a pair of contact pieces 1a. A pair of dogleg-shaped spring pieces 1c that bend in the insertion direction when pressed by the board 3 and return the pair of contact pieces 1a to their original positions by spring force when the printed board 3 is removed; Piece 1b
It consists of a pressing piece 1d and a terminal piece 1e extending from the top, which are connected to each other and formed by punching. The spring piece 1c is formed as a relatively soft spring, and the pressing piece 1d does not come into contact with the pair of contact pieces 1a before the pair of contact pieces 1a are pressed by the printed circuit board 3. When the pair of contact pieces 1a are pressed in the insertion direction by 3 and moved, they are formed to protrude inward so as to come into contact with the contact portions 1a, bending them, and coming into pressure contact with the printed circuit board 3.

The housing 2 has a plurality of grooves 4 for accommodating socket contacts arranged in parallel along its longitudinal direction.
A recess 5 is formed to accommodate the end of the printed circuit board 3 that is in contact with the pair of contact pieces 1a and to communicate the plurality of grooves 4.

(Effects of the invention) Since the present invention has the above-described configuration, the insertion/extraction force of the printed circuit board with respect to the socket contacts is small, the connecting/disconnecting operation is easy, and the sockets containing the socket contacts can be mounted with high density. This has the effect that there is no problem in inserting and removing the printed circuit board even if the printed circuit board is inserted or removed.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a socket and printed circuit board using contacts according to one embodiment of the present invention, Figures 2 and 3 are cross-sectional views of the socket before and after inserting the printed circuit board, and Figures 4 and 3 are cross-sectional views thereof. 5 are a sectional view of a conventional socket and a front view of a socket contact. 1... socket contact, 1a... contact piece,
1b... Base piece, 1d... Pressing piece, 2... Housing, 3... Printed circuit board, 4... Concave groove, 5... Concave portion.

Claims (1)

[Scope of utility model registration request] The printed circuit board includes a pair of contact pieces spaced apart so that the printed circuit board can be inserted and removed with a small force, and a pair of pressing pieces that press the pair of contact pieces, and the pair of contact pieces push the printed circuit board into the space. When inserted, the pressing piece is movable in the insertion direction on the printed circuit board, and when the pair of contact pieces moves in the insertion direction, the pressing piece bends the pair of contact pieces and presses against the printed circuit board. A socket contact characterized by: