JPH0731517Y2 - IC socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an IC socket, and more particularly to an IC socket having a connection terminal plate for integrally connecting contact pins of a common potential.

(Prior art and its problems) Conventional IC used for IC test as shown in FIG. 6 as a sectional view
Sockets have been proposed. In such an IC socket, a plurality of probes 2 are implanted in the socket body 1 at regular intervals. A probe 2 is inserted above the socket body 1 and a floating plate 4 positioned by a guide pin 3 is provided. The floating plate 4 is slidable in the vertical direction while the lateral position is restricted by the guide pin 3, and the head of the guide pin 3 is always present.
The spring 5 is pressed against 3a. A recess 4a for positioning the IC 6 is provided on the upper surface of the floating plate 4.

In this IC socket, the IC 6 is placed in the concave portion 4a of the floating plate 4, the heat radiating plate 7 is placed on the upper side thereof, and both ends thereof are pressed by the holding members 8 to connect the connection terminals of the IC 6 to the probe 2.
It is a structure to contact the contact end of.

When the IC socket having such a structure is mounted on the circuit board 11, the lower end portion of the probe 2 is completely inserted into the hole 12 of the circuit board 11, and the bolt 14 is passed through the through hole 13a of the fixing leg portion 13 to insert the circuit board 11 into the circuit board 11. Then, the connection end of the probe 2 is soldered to the circuit of the circuit board 11.

However, in this case, not all terminals of the IC package are used for connection depending on the type of IC, and some terminals have the same potential. Even if there are such terminals having the same potential, conventionally, all the probe terminals are soldered to the circuit board 11, and then the terminals having the same potential are connected to each other on the circuit board 11.

For this reason, particularly in the case of a fine circuit pattern, not only the connection work is difficult, but also when the IC is changed, the interconnection of the circuit board 11 must be changed each time. there were.

The present invention solves the above-mentioned problems and has common potentials and the like.
An object of the present invention is to provide an IC socket having a connection terminal plate that facilitates connection between the IC lead terminal and the circuit board 11.

(Means for Solving the Problem) In order to achieve the above object, the IC socket of the present invention comprises a plurality of probes (contact pins) that come into contact with the connection terminals of the IC.
Among them, for example, a connection terminal plate that comes into contact with a group of probes having the same potential is arranged between the socket body 1 and the circuit board 11, and a positioning means for determining a contact position with the probe is provided above the terminal plate. Further, one common pin is provided on the lower side of the terminal board (on the side of the circuit board 11).

Incidentally, the positioning means, when the contact pin is a tubular probe, a protrusion inserted into the probe tube, or a counterbore into which the probe is inserted, and in other cases, a counterbore into which the contact pin is inserted. It

(Function) As described above, common terminals of the same potential or the like are not individually wired,
The electrical connection is completed simply by connecting it to the contact terminal board.

(Example) FIG. 1 is a sectional view of an IC socket using the connection terminal board of the present invention, FIG. 2 is a terminal arrangement diagram of an IC package, and FIG. 3 is a circuit when the connection terminal board of the present invention is used. FIG. 4 is a partial sectional view showing the connection terminal board of the first embodiment, and FIG. 5 is a partial sectional view showing the connection terminal board of the second embodiment.

In the first embodiment, the connection terminal plate is composed of the terminal plate 20, the common pin 20a and the protrusion 20b. On the bottom surface of the socket body 1, the terminal board 20
A recess 1a for inserting the terminal plate 20 is provided, and the terminal plate 20 is press-fitted or adhesively inserted and fixed therein as shown in the first illustration. In this case, on the terminal surface of the IC 6 shown in FIG.
Among them, the row of holes of the circuit board 11 corresponding to the row of the terminals 6b having the same potential (for example, the ground potential) is defined as the common pin insertion hole 12a by providing only one location.

In this way, when the IC socket of FIG. 1 is mounted, the socket is positioned by the bolt insertion hole 11a of the circuit board 11, so that the common pin 20a of the connection terminal board is
Is inserted into the common pin insertion hole 12a of the
b will be connected by one common pin 20a.

FIG. 4 shows an example of the connection terminal board according to the present invention.
One common pin 20a is provided on the lower side of the terminal plate 20, and protrusions 20b to be inserted into the lower end of the probe 2 are provided in rows on the upper side opposite to the common pin 20a. In this example,
It can be used when the lower end of the probe 2 is tubular.

FIG. 5 shows a different example of the connection terminal board, in which a counterbore 21b is provided instead of the projection 20b in the case of FIG. 4, and the other parts, that is, the terminal board 21 and the common pin 21a are shown in FIG. It is similar to the one.

(Effect of the Invention) As described above, according to the present invention, it is not necessary to connect common terminals such as the same potential on the circuit board 11 to each other, and only one connection is required.

[Brief description of drawings]

FIG. 1 is a sectional view of an IC socket using the connection terminal board of the present invention, FIG. 2 is a terminal array view of the IC package, FIG. 3 is an array view of holes of a circuit board using the connection terminal board, and FIG. FIG. 6 is a partial sectional view showing an example of the connection terminal board according to the present invention, FIG. 5 is a partial sectional view showing another example of the connection terminal board, and FIG. 6 is a sectional view of a conventional IC socket without using the connection terminal board. Is. 1: Socket body, 2: Probe as contact pin,
11: circuit board, 12: hole, 12a: common pin insertion hole, 20: terminal plate, 20a: common pin, 20b: protrusion, 21: terminal plate, 21a: common pin, 21b: counterbore.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Creator Ryoji Maruyama 2-30-1 Namiki, Kawaguchi City, Saitama Prefecture Daiichi Seiko Co., Ltd. (72) Creator Tomoyoshi Yamaguchi 2-30-1 Namiki, Kawaguchi City, Saitama Prefecture No. Daiichi Seiko Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. An IC socket having a plurality of contact pins housed in a socket body so as to come into contact with terminals of an IC package, wherein a connection terminal is in contact with a group of contact pins connected to a common potential among the contact pins. An IC socket in which a plate is provided on the lower side of the contact pin, positioning means for determining a contact position with the contact pin is provided on the upper side of the terminal plate, and one common pin is provided on the lower side. 2. The IC socket according to claim 1, wherein the positioning means is a protrusion inserted into the tube of the probe when the contact pin is a tubular probe. 3. The IC socket according to claim 1, wherein the positioning means is a spot facing into which a contact pin is inserted.