JPH05299538A - Ic socket - Google Patents

Abstract

(57) [Summary] [Purpose] Even with a leaded chip carrier consisting of an upper lid and a lower lid with poor mounting accuracy, the function of the corners for regulating the insertion direction formed on the corners of the inner surface of the side wall of the IC socket base is impaired. An IC socket that can be inserted into an IC socket base without being obtained. [Structure] The insertion direction regulating corner portion 1a provided only on the lower portion of the corner portion of the IC socket base 1 can be applied only to the insertion direction regulating corner portion 5a formed on the lower lid 5 of the leaded chip carrier 3. And is not applied to the insertion direction regulating corner portion 4a formed on the upper lid 4. [Effect] The chip carrier with leads is integrated into the IC regardless of the mounting accuracy of the top and bottom covers of the chip carrier with leads.
It can be easily and surely inserted into the socket base.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC socket for accommodating an IC (integrated circuit) having a chip carrier structure with leads having an insertion direction regulating corner portion.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a conventional IC socket and a chip carrier with leads inserted therein.
FIG. 5 is a perspective view showing an exploded structure of the chip carrier with leads in FIG. 4. In the figure, 1 is an IC socket base forming an IC socket, 2 is an IC socket base 1
, 1a is a corner for insertion direction regulation formed at a corner of the inner surface of the side wall of the IC socket base 1, 3 is a chip carrier (IC) with a lead to be inserted into the IC socket base 1, 4 Is an upper lid of the chip carrier 3 with leads, 4a is an insertion direction regulating corner formed on the upper lid 4,
5 is a lower lid of the chip carrier 3 with leads, 5a is an upper lid 4
Like the insertion direction regulating corner portion 4a, the insertion direction regulating corner portion formed on the lower lid 5, 6 is a bonding portion between the upper lid 4 and the lower lid 5,
Reference numeral 7 is an IC lead, 8 is an IC chip, and 9 is a bonding wire.

The operation of the conventional IC socket shown in FIG. 4 and the chip carrier with leads inserted therein will be described below. When the chip carrier with leads 3 is inserted into the IC socket base 1, the insertion direction regulating corner 1a formed at the corner of the inner surface of the side wall of the IC socket base 1 and the upper lid 4 and the bottom of the chip carrier 3 with leads. Lid 5
When the corners 4a and 5a for regulating the insertion direction formed in 1 do not match, the insertion cannot be performed. As a result, the leaded chip carrier 3 can be inserted into the IC socket base 1 in the correct insertion direction.

[0004]

The above-described conventional IC socket and the chip carrier with leads inserted therein are configured as described above, and as shown in FIG. 5, the chip carrier with leads 3 has an upper lid. 4 and the lower lid 5 are bonded to each other at the bonding portion 6, the upper lid 4 and the lower lid 5
It is extremely difficult to control the mounting accuracy with
Further, since the insertion direction regulating corner portion 1a formed at the corner portion on the inner surface of the side wall of the conventional IC socket base 1 is formed by a flat surface, the upper lid 4 and the lower lid 5 of the chip carrier 3 with leads are attached. When the accuracy is poor, the insertion direction regulation corners 4a, 5a formed on the upper lid 4 and the lower lid 5 of the chip carrier 3 with leads and the insertion direction regulation formed on the corners of the inner surface of the side wall of the IC socket base 1. The corner portions 1a come into contact with each other, and as a result, the chip carrier 3 with leads is connected to the IC socket substrate 1
There was a problem that it could not be inserted inside.

The present invention has been made to solve the above problems, and even a chip carrier with leads having an upper lid and a lower lid with poor mounting accuracy is formed at the corner of the inner surface of the side wall of the IC socket substrate. An object of the present invention is to obtain an IC socket that can be inserted into an IC socket base without impairing the function of the inserted insertion direction regulating corner portion.

[0006]

An IC socket according to the present invention is provided with an insertion direction regulating corner portion only at a lower portion of a corner portion of an IC socket base, and the insertion direction regulating corner portion is provided in a leaded chip carrier. It is adapted so that it can be applied only to the insertion direction regulating corner formed on the lower lid, and not applied to the insertion direction regulating corner formed on the upper lid.

[0007]

In the IC socket according to the present invention, since the insertion direction regulating corner portion is provided only at the lower portion of the corner portion of the IC socket base, the insertion direction regulating corner portion is formed on the lower lid of the chip carrier with leads. The corners for regulating the insertion direction are restricted, and the corners for regulating the insertion direction formed on the upper lid are not restricted.

[0008]

EXAMPLES Example 1. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a first embodiment of the present invention I
FIG. 2 is a perspective view showing a C socket and a chip carrier with leads to be inserted therein, and FIG. 2 is a partial enlarged view of an insertion direction regulating corner portion of the IC socket board in FIG. 1 seen from above. In the figure, 1 is an IC socket base forming an IC socket, 2 is a contact provided on the IC socket base 1, and 1a is a corner of the inner surface of the side wall of the IC socket base 1 and is formed only at a lower part of this corner. The inserted insertion direction regulating corner portions 1b are corner portions on the inner surface of the side wall of the IC socket base 1, and have the same configuration as other corner portions to which the insertion direction regulating corner portion is not applied. 3 is a chip carrier (IC) with leads to be inserted into the IC socket base 1;
Is a top lid of the leaded chip carrier 3, 4a is an insertion direction regulating corner formed on the top lid 4, 5 is a lower lid of the leaded chip carrier 3, 5a is an insertion direction regulating corner formed on the lower lid 5. , 6 is a bonding portion between the upper lid 4 and the lower lid 5, and 7 is an IC
Be the lead.

Next, the first embodiment of the present invention shown in FIG.
The operation of the IC socket and the chip carrier with leads inserted therein will be described. When inserting the leaded chip carrier 3 into the IC socket substrate 1, as shown in a partially enlarged view of FIG. 2, the insertion direction regulating corner portion 5a formed on the lower lid 5 of the leaded chip carrier 3 is inserted. (Indicated by a broken line in FIG. 2) is a corner portion of the inner surface of the side wall of the IC socket base 1, and coincides with the insertion direction regulating corner portion 1a formed only at a lower portion of this corner portion. At this time, the insertion direction regulating corner portion 4a formed on the upper lid 4 whose mounting position is deviated from the lower lid 5 is regulated only at the corner portion 1b (normal rectangular corner portion) on the inner surface of the side wall of the IC socket base 1. Therefore, the upper lid 4 can be inserted into the IC socket base 1 without contacting the inner surface of the side wall of the IC socket base 1.

Embodiment 2. FIG. 3 is a perspective view showing an IC socket which is a second embodiment of the present invention. In the first embodiment of the present invention described above, when the chip carrier with leads 3 is inserted into the IC socket base 1, the corner portion for controlling the insertion direction formed on the upper lid 4 of the chip carrier with leads 3 is provided. This is an example of the case where the corner portion 1b on the inner surface of the side wall of the IC socket base 1 facing the corner portion 4a has the same structure as the other corner portions.

On the other hand, in the second embodiment of the present invention shown in FIG. 3, the insertion direction regulating corner portion 1b is provided only at the lower portion of the corner portion of the inner surface of the side wall of the IC socket base 1.
This is an example of the case in which the step portion 1c is provided on the inner surface of the side wall of the IC socket base 1 at the upper part of the above so as to spread the upper part. Has the same effect as.

[0012]

As described above, according to the IC socket of the present invention, the insertion direction regulating corner portion is provided only at the lower portion of the corner portion of the IC socket base, and the insertion direction regulating corner portion is provided with the leaded chip. Since it can be applied only to the insertion direction regulating corner formed on the lower lid of the carrier, and not to the insertion direction regulating corner formed on the upper lid, the upper and lower lids of the chip carrier with lead are mounted. An IC that allows a chip carrier with leads to be easily and surely inserted into an IC socket substrate regardless of the accuracy with which the lid is attached and without impairing the function of the corners for regulating the insertion direction.
It has an excellent effect of obtaining a socket.

[Brief description of drawings]

FIG. 1 is a perspective view showing an IC socket according to a first embodiment of the present invention and a chip carrier with leads inserted therein.

FIG. 2 is a partially enlarged view of an insertion direction regulating corner portion of the IC socket board in FIG. 1 seen from above.

FIG. 3 is a perspective view showing an IC socket which is a second embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional IC socket and a chip carrier with leads inserted therein.

5 is an exploded perspective view showing the structure of the chip carrier with leads in FIG. 4. FIG.

[Explanation of symbols]

 1 IC Socket Base 1a Corner of Insertion Direction of IC Socket Base 1 1b Corner of IC Socket Base 1 1c Step of IC Socket Base 1 2 Contact 3 Chip Carrier (IC) with Lead 4 Upper Lid 4a Upper Lid 4 Insertion Direction Regulation corner portion 5 Lower lid 5a Insertion direction of lower lid 5 Regulation corner portion 6 Adhesive portion 7 IC lead 8 IC chip 9 Bonding wire

Claims (2)

[Claims] 1. An IC socket for accommodating an IC of a chip carrier structure with a lead having an insertion direction regulating corner portion, wherein the insertion direction regulating corner portion formed on the IC socket base of the IC socket is the IC socket substrate. An IC socket characterized in that it is provided only at the lower part of the corner of the. 2. An IC socket for accommodating an IC of a chip carrier structure with a lead having an insertion direction regulating corner portion, wherein the insertion direction regulating corner portion is provided only below the corner portion of the IC socket base of the IC socket. An IC socket, characterized in that a step portion is provided on the inner surface of the side wall of the IC socket base at the upper part so that the upper part spreads out.