JPS625017Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a socket for dual in-line package integrated circuits.

In dual-inline package integrated circuits (hereinafter simply referred to as integrated circuits), as the integration density increases, the amount of heat generated from the integrated circuits also increases, so forced air is blown around the integrated circuits to cool the integrated circuits. There is.

In order to achieve effective cooling for this integrated circuit, to protect it from adverse thermal effects such as during soldering, and to facilitate the replacement of individual integrated circuits, the terminal pins of the integrated circuit are An integrated circuit socket is used in which the socket fitting to be inserted is embedded.

This socket has a pair of socket body members that correspond to the terminal pins of the integrated circuits arranged in a row. Conventionally, this type of socket maintains the spacing between the pair of socket body members at a precisely constant value, and In order to maintain a constant mutual orientation of the socket body members, they were formed completely in one piece.

For this reason, the lower surface of the integrated circuit mounted on the wiring board via the socket is buried in the socket, and there is a drawback that a sufficient cooling effect cannot be obtained by blowing air.

The present invention has been made in view of the above, and aims to provide a socket for integrated circuits that eliminates the above-mentioned drawbacks, and is formed by integrally connecting a pair of socket body members with a connecting member. The connecting portion of the socket main body member of the connecting member is formed to have a small cross-sectional area so that it can be easily cut, and a plurality of first protrusions and At least one second protrusion is provided approximately at the center outer side of the socket body member in the length direction.

The present invention will be explained below with reference to examples.

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof, showing the case of a socket into which a 16-pin integrated circuit is inserted.

The socket of this embodiment includes a pair of socket body members 1 and 2, which are arranged parallel to each other at a predetermined interval along the length direction of the socket body members 1 and 2.
A plurality of (three in the illustrated example) connecting members 5 are integrally provided in a bridging manner between both socket body members 1 and 2.
and three protrusions 6 integrally provided with the socket body members 1, 2 at predetermined intervals on the bottom surfaces of the socket body members 1, 2 and inside the socket body members 1, 2.
and 3 socket body members 1, 2 at predetermined intervals on the outside of the socket body members 1, 2 facing the protrusion 6.
and a protrusion 7 provided integrally with the protrusion 7.

The socket bodies 1 and 2 are made of an electrically insulating material and form a substantially rectangular parallelepiped, and a socket fitting 3 into which a terminal pin of an integrated circuit is inserted is embedded, and one end of the socket fitting 4 is connected from the bottom of the socket bodies 1 and 2. It is made to protrude as pin 4.

The pair of socket body members 1 and 2 are held together at a constant distance and in a constant mutual attitude by the above-mentioned connecting member 5 and are coupled together.

The connecting member 5 that connects the two socket body members 1 and 2 can be easily removed from the socket body members 1 and 2 after both sockets according to the present invention are inserted into the wiring board using the connecting pins 4 and the connecting pins 4 and the wiring are soldered. The cross-sectional area of the joint with both the socket body members 1 and 2 is made small so that it can be cut away.

That is, before the connecting pin 4 and the wiring are soldered, the connecting member 5 maintains the distance and mutual attitude between the two socket body members 1 and 2 constant, so that the two socket body members can be handled as a single unit. After soldering, the connecting member 5 itself and the connecting member to both the socket body members 1 and 2 can be easily separated from each other. Both ends, which are parts, have a rigidity that maintains the mutual positional relationship of both socket body members 1 and 2 immovably, and
The joints between the two socket body members 1 and 2 must be so brittle that they can be easily cut off after the socket connection pins 4 are soldered.

For this reason, the cross-sectional area of the connecting member 5 at both ends, which are the joints with the socket body member, is sufficiently smaller than that of the central portion, and mechanical fragility is achieved by reducing this cross-sectional area. .

In the illustrated embodiment, the continuous member 5 has a tapered lower surface and becomes thinner as it approaches both ends, thereby reducing the cross-sectional area of the joint.

In addition, there are protrusions 6 on the bottom surfaces of the socket body members 1 and 2.
and 7 are protruded, but these protrusions 6 and 7 are provided.
The height is set to be slightly larger than the solder that protrudes from the wiring board hole for the connection pin and solidifies when the connection pin 4 is soldered to the wiring on the wiring board.

In the case of the illustrated embodiment, three connecting members 5 are provided, one each at three locations between both ends of the socket body members 1 and 2 and between the center. This is to ensure that sufficient mechanical strength is obtained to maintain the spacing and mutual posture of the members 1 and 2, and to reduce the cross-sectional area of the joint in each connecting member 5.

Therefore, in the case of large sockets, it is advantageous to increase the number of connecting members 5.

Furthermore, the number of protrusions 6 and 7 may be further increased in the case of a large socket.

As described above, in one embodiment of the present invention, the socket can be handled in exactly the same way as a conventional socket, and the connecting pin 4 is inserted into the pin hole of the wiring board, and the socket is fixed by being soldered to the wiring of the wiring board by the pin 4. Ru.

At this time, the socket is positioned with the protrusions 6 and 7 in contact with the surface of the wiring board, so that the socket body member does not change its position due to solder that protrudes from the pin hole of the wiring board and hardens. .

Further, after the above-described soldering is completed, a shearing force is applied to the joints at both ends of the continuous member 5 to cut the cut portions, and the connecting member 5 is removed from the socket body members 1 and 2.

When cutting this joint, the external force applied to apply a shearing force to this joint also acts on the entire socket, but the protrusions 6 and 7 provided on the bottom of the socket bodies 1 and 2 cause the socket body 1 to , 2 are located on the wiring board, the external force is applied to the protrusions 6, 7.
The fixed posture of the socket bodies 1 and 2 with respect to the wiring board will not change.

By removing the connecting member 5 in this manner, the two socket bodies 1 and 2 become separate objects and are fixed on the wiring board while maintaining a constant distance and mutual orientation. When integrated circuits are mounted on the main body members 1 and 2, a space is created between the printed wiring board and the integrated circuits through which cooling air can sufficiently pass, making cooling the integrated circuits by forced airflow effective. will be achieved.

Although the case where there are three protrusions 7 has been described above, the same effect can be obtained even if the protrusions 7 other than the one located in the middle in the longitudinal direction of both socket members 1 and 2 are removed.

Next, both socket members 1 and 2 may be arranged as separate objects on a wiring board, and the connecting pins 4 and the wiring on the wiring board may be soldered to handle each socket member 1 and 2 individually. .

In this case, the connecting member 5 may be cut at the joint with both the socket body members 1 and 2, and the socket member bodies 1 and 2 may be handled as separate bodies.

In this case, cutting can be carried out very easily due to the presence of the protrusions 6 and 7 and because the cross-sectional area is set small at both ends of the connecting member 5.

Furthermore, both socket body members 1 and 2 are made separate,
Even when installing on a wiring board and soldering the connection pins 4 and wiring, the socket body members 1 and 2
Since the sockets are provided with protrusions 6 and 7, they are stable, and the socket body members 1 and 2 will not tilt and make soldering difficult.

As explained above, according to the socket of the present invention,
Before soldering the wiring on the wiring board and the connecting pins, both socket body members can be handled as a single unit, or the connecting member can be cut out and handled as separate units.

Furthermore, when handled as a single unit, both socket main body members can be soldered onto the wiring board at regular intervals and with their mutual orientation maintained constant, making it easy to handle until they are fixed.

Furthermore, after soldering, the connecting member can be easily removed, and a sufficient space for cooling can be formed between both socket body members, thereby effectively cooling the inserted integrated circuit. Can be done.

In addition, when handling them as separate objects, the connecting member can be easily removed and both socket body members can be easily separated, and when the separate socket body members are attached to the wiring board, the protrusions allow As a result, the socket main body member does not tilt and is stable.

[Brief explanation of the drawing]

1, 2, and 3 are a plan view, a front view, and a side view of an embodiment of the present invention. 1 and 2... Socket body member, 3... Socket metal fitting, 4... Connection pin, 5... Connection member, 6
and 7...protrusion.

Claims (1)

[Scope of utility model registration request] A pair of socket body members in which a terminal pin of an integrated circuit is inserted and a socket metal fitting having one end protruding from the bottom surface and serving as a connection pin is embedded, and the socket body members are arranged at a predetermined interval in the length direction of the socket body members, and In order to keep the distance and mutual posture of the pair of socket body members constant, the socket body member is provided in the form of a bridge between the pair of socket body members, and has a small cross-sectional area so that the joint with the socket body member can be easily cut. a plurality of first protrusions provided on the bottom surfaces of each of the pair of socket body members and on the inner surfaces of the pair of socket body members along the length direction of the socket body members; A dual in-line socket comprising at least one second protrusion on the bottom surface of each of the socket body members and on the outer surface of the pair of socket body members along the length direction of the socket body members. Socket for packaged integrated circuits.