JPH09266021A - Socket for electric part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a socket for electric parts, by which the electric parts can be temporarily attached to a printed circuit board quickly and easily. SOLUTION: This socket for electric parts includes a socket main body 1 having a mounting seat 1b; contact pins aligned on the socket main body; and a cover fitted over the socket main body in such a way as to freely rise and fall. A fastener consisting of a flexible tongue 7 and a hook part 7a is molded integrally with the mounting seat 1b, and is fitted into a mounting hole 5a provided in a printed circuit board 5, with the hook part 7a engaged with the lower surface of the printed circuit board 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical component socket used for inspection and mounting of electrical components such as IC packages.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show an example of a conventionally known socket for electric parts, and FIG. 3 is a plan view thereof.
FIG. 4 is a sectional view taken along the line AA of FIG. This socket for electric parts includes a socket main body 1 having a rectangular planar shape, and a cover which is mounted on the socket main body so as to be able to move up and down and whose outer shape is formed to match that of the socket main body 1. A spring 3 is interposed between the socket body 1 and the cover 2 to give the cover 2 an upward habit, and the upper limit position (illustrated position) of the cover 2 is provided between the socket body and the socket body. It is adapted to be held by a locking mechanism (not shown).

The socket body 1 includes a large number of contact pins 4 which are arranged in an insulating manner at equal intervals along two opposing sides, and is placed on a mounting table 1a provided on the socket body 1. Lead L of electrical component P such as IC package
And a cam 2 provided on the cover 2
a, a trigger portion 4b slidingly contacting with a, a spring portion 4c for imparting an inward displacement habit to the contact piece portion 4a and the trigger portion 4b, a base portion 4d fitted to the socket body 1, and a socket extending downward from the base portion 4d. It has a connection terminal portion 4e that penetrates through the bottom portion of the main body 1 and projects.

Further, the socket body 1 is provided with a mounting seat 1b having a through hole for temporarily fixing the socket body to the printed circuit board 5, and the through hole and the printed circuit board corresponding thereto. By inserting and fixing the screws 6 into the mounting holes formed in the socket 5, the socket body 1 and the printed circuit board 5 can be temporarily fixed as shown in FIG.

The electric component P can be loaded into the electric component socket by pushing down the cover 2 against the spring 3. That is, when the cover 2 is pushed down in the state shown in the drawing, the trigger portion 4b is pushed outward by the cam 2a, so that the contact piece portion 4a is also displaced outward against the habit and reaches the position shown by the chain line. It can be rotated. Therefore, in this state, the electric component P can be inserted into the mounting table 1a, and the loaded electric component P can be taken out upward. In this way, when the pressing of the cover 2 is released after the electric component P is loaded in the predetermined position, the contact pin 4 returns to the position shown by the solid line, the contact piece portion 4a contacts the lead L, and the electric component P The inside of is connected to the wiring of the printed circuit board 5 through the contact terminal portion 4e, and predetermined inspection and measurement are performed.

[0006]

Conventionally, when the socket for electric parts is mounted on the printed circuit board 5, the printed circuit board 5 is inserted after the connection terminal portions 4e are inserted into the through holes provided in the printed circuit board 5, respectively. By dipping the connection terminal portion 4e protruding on the lower surface of the into a solder bath or the like, the connection terminal portion 4e and the electrode terminal of the printed circuit board 5 are soldered, but at that time, since the socket for electric parts floats up, In order to prevent this, it is necessary to temporarily fix the electrical component socket and the printed circuit board 5 with the screws 6 as described above. This temporary fixing work with the screws 6 is a problem because it takes a lot of time when a large number of sockets for electric parts are attached like a burn-in board.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to perform temporary fixing to a printed circuit board quickly and easily. The present invention aims to provide a socket for electric parts.

[0008]

In order to achieve the above object, the socket for electric parts according to the present invention comprises a socket body having a mounting table for mounting electric parts, and a socket body arranged in a row. An electrical component socket comprising: a contact piece portion that comes into pressure contact with a lead of an electrical component placed on the mounting table; and a large number of contact pins having connection terminal portions that are to be connected to electrode terminals of a printed circuit board. It is characterized in that the main body is provided with a fastener capable of being fitted and locked in the mounting hole of the printed circuit board, integrally or separately.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below based on illustrated embodiments. FIG. 1 shows an embodiment of the present invention. (A) is an enlarged sectional view of an essential part, (b) is a bottom view of (a), and FIG. 2 is an enlarged view of an essential part of another embodiment of the present invention. FIG. In the figure, parts and portions substantially the same as those described in the prior art are designated by the same reference numerals.

According to the first embodiment of the present invention, the mounting seat 1b of the socket body 1 is integrally formed with a fastener composed of a pair of opposed tongues 7 as shown in FIG. 1 (a). ing. A hook portion 7a is formed at the tip of each tongue piece 7, and its length is selected so as to engage with the lower surface of the printed circuit board 5. Generally, the socket body 1 is injection-molded using an electrically insulating synthetic resin,
The tongue piece 7 is formed at the same time when the socket body 1 is formed.
The thickness of each tongue piece 7a is selected so as to have appropriate flexibility and strength.

Since the first embodiment is constructed as described above, when the socket body 1 and the printed circuit board 5 are temporarily fixed, the tongue piece 7 is attached to the mounting hole 5a of the printed circuit board 5.
When the tongue piece 7 is pushed in, the tongue piece 7 bends inward and passes through the attachment hole, and at the moment when the hook portion 7a comes out of the attachment hole 5a, the hook portion 7a is restored by the restoring force of the tongue piece 7a.
Engage the bottom of the.

FIG. 2 shows a second embodiment. In this embodiment, the fastener 8 is formed separately from the socket body 1, and has a disk-shaped head portion 8a and a hanging portion from the head portion. It comprises a pair of opposed tongue pieces 8b and a hook portion 8c formed at the free end of the tongue piece. In this case, fastener 8
May be made by injection molding using a suitable synthetic resin, or may be made of a metal material having suitable elasticity.

Since the second embodiment is constructed as described above, when the socket body 1 and the printed circuit board 5 are temporarily fixed, if the fastener 8 is pushed into the mounting hole 5a,
Similar to the case of the first embodiment, the hook portion 8c can be engaged with the bottom surface of the printed circuit board 5 to complete the temporary fixing.

As described above, in the embodiment, the pair of tongue pieces has been described. However, the pair of tongue pieces may be increased by another pair as shown by the chain line in FIG. Needless to say, when the fastener is made of synthetic resin, a heat-resistant resin that does not melt in solder is used. Further, in the embodiment, the mounting seat is shown as projecting from the socket body, but it may be designed so as not to project from the socket body, and the number of equipping the four corners of the socket body is not limited.

[0015]

As described above, according to the present invention, it is possible to inexpensively provide a socket for electric parts which can be temporarily and easily fixed to a printed circuit board, and the practical effect is extremely large. is there.

[Brief description of drawings]

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is an enlarged sectional view of an essential part, and FIG. 1B is a bottom view of FIG.

FIG. 2 is an enlarged sectional view of an essential part showing a second embodiment of the present invention.

FIG. 3 is a plan view showing an example of a conventional socket for electric parts to which the present invention is applied.

4 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Socket body 1a Mounting table 1b Mounting seat 2 Cover 2a Cam 3 Spring 4 Contact pin 4a Contact piece part 4b Trigger part 4c Spring part 4d Base part 4e Connection terminal part 5 Printed circuit board 5a Mounting hole 6 Screw 7, 8b Tongue piece 7a, 8c Hook part 8 Fastener

Claims (1)

[Claims] 1. A socket body having a mounting table for mounting an electric component, a contact piece portion arranged in a row on the socket body and press-contacting a lead of the electric component mounted on the mounting table, and a print. In a socket for an electric component having a large number of contact pins having connection terminal portions to be connected to electrode terminals of a circuit board, a socket body is integrally or separately provided with a fastener capable of being fitted and locked in a mounting hole of a printed circuit board. A socket for electric parts, which is provided on the body.