JP2997701B2 - IC socket - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC socket mounted with an IC device such as various IC packages to connect the device to an external circuit.

[Conventional technology]

FIG. 4 and FIG. 5 show an example of the configuration of this type of IC socket suitable for an IC device such as a so-called flat type IC package. In the drawings, the IC socket is connected to a lead terminal L of the IC device to be mounted. A socket body 12 having a large number of contact pins 11 arranged in a row has a lid 13 formed with a pressing portion 13a for the lead terminal L and a lock lever 14 for locking the lid 13 in a closed state, respectively. Pivoted via shafts 15 and 16. When mounting an IC device in such a conventional IC socket, first, as shown in FIG. 4, the lid 13 and the lock lever 14 are placed in an open state, and the lead terminal L of the IC device and the contact pin 11 are aligned. The IC device is mounted as shown in FIG. And lid 13,
Next, by rotating the lock lever 14 in the directions of arrow b and arrow c, respectively, the IC device mounted on the socket body 12 causes the lead terminal L to be in contact with the contact pin 11 as shown in FIG. The IC socket is mounted in contact with the IC socket, and this state is held by the lock lever 14.

[Problems to be solved by the invention]

However, in the conventional IC socket, the lid 13 and the lock lever 14 are individually opened and closed, so that the IC
There is a problem that the mounting work of the device has to be troublesome, and it is difficult to automate such work. On the other hand, the number of parts constituting the IC socket is also large, which is also a problem.

In view of such circumstances, the present invention is not only easy to operate, but also
An object of the present invention is to provide an IC socket having a simplified structure.

[Means for solving the problem]

The IC socket according to the present invention is provided with a row of contact pins having contact portions on which lead terminals of an IC device can be placed and which can be substantially resiliently pressed, and a support for holding a shaft arranged to rotate a stopper. A socket body having at least one pair of opposed portions, and on one end side, the lead terminal mounted on the contact portion of the contact pin is pressed from above to elastically deform the contact pin in a substantially downward direction; A holding portion capable of holding the lead terminal is formed with a contact portion of the contact pin, which has caused a reaction in a substantially upward direction by elastic deformation in a downward direction,
On the other end side, an operation part capable of operating the pivoting of the holding part is formed, and the holding part and the operation part are located on the opposite side facing the axis and from the axis to the tip of the operation part. Is longer than the length from the shaft to the tip of the holding portion, the space between the holding portion and the operating portion is supported by the shaft, and the shaft moves the operating portion in the downward direction. At least one pair of opposed stoppers held on at least one pair of opposed support portions of the socket body so as to be able to be pressed and rotated, and the contact portion by pivoting the holding portion in the direction of the contact portion of the contact pin. And an elastic means for biasing the stopper so that the stopper can be elastically deformed substantially downward, and the operating part of the stopper is pressed substantially downward and rotated to substantially move the pressing part. Rotate the device upward to remove the IC device. And by releasing the pressing of the operating portion, the pressing portion is rotated substantially downward to elastically contact the IC device and the contact pin, and maintain the elastic contact state. It is characterized by being made.

(Operation)

According to the present invention, the IC device can be mounted by a simple operation of simply pressing the operation unit of the stopper,
Also, when the pressing is released, the lead terminals of the mounted IC device can be connected to the contact pins, and the attachment and detachment of the IC device is extremely easy.

〔Example〕

An embodiment of an IC socket according to the present invention will be described below with reference to FIGS. In the figure, 1 is a socket body,
Reference numeral 2 denotes a socket body 1 corresponding to a lead terminal L of an IC device to be mounted (in this example, a so-called flat type is used, and its lead terminal L extends laterally from the main body). Contact pins 3, 3 'arranged in a row so that the contact portions 2a are in elastic contact with the lead terminals L, and are rotatably supported by a pair of shafts 4, 4' arranged in parallel with the socket body 1. Pressing portions 3a, 3a 'which can press the lead terminal L contacting the contact portion 2a of the contact pin 2 are formed at one end thereof, and the operation portions 3b, 3b,
3b 'is provided, and the holding parts 3a, 3a' and the operation parts 3b, 3b '
Are located on the opposite side to the shafts 4 and 4 ', and the length from the shafts 4 and 4' to the distal ends of the operation units 3b and 3b 'is
A pair of stoppers, between the holding parts 3a, 3a 'and the operating parts 3b, 3b', which are supported by the shafts 4, 4 ', so as to be longer than the length to the tip of 3a, 3a', 5 Rotate the holding portion 3a of the stopper 3 toward the contact pin 2 (first
(See the figure, arrow A, hereinafter referred to as the closing direction, and the same applies to the stopper 3 ′.) The coil spring is wound around the shaft 4.

Since the IC socket according to the present invention is configured as described above, when mounting the IC device, the operating portions 3b and 3b 'of the stoppers 3 and 3' are first pressed down against the elasticity of the coil spring 5. The holding parts 3a and 3a 'are pivoted via the shafts 4 and 4' (arrow B in FIG. 1) to be in an open state, whereby the IC device can be inserted into the socket body 1. Since the stoppers 3 and 3 'have an open top structure as described above, the IC device can be mounted from above the socket body 1 by holding the holding portions 3a and 3a' in such an open state. However, at this time, the IC device is positioned such that the lead terminal L is aligned with the contact portion 2a of the corresponding contact pin 2. In this state, when the pressing force applied to the operating portions 3b, 3b 'of the stoppers 3, 3' is subsequently released at the same time, the pressing portions 3a, 3a 'rotate in the closing direction by the elastic force of the coil spring 5. By pressing the contact pins 2 at the same time, the lead terminals L are elastically brought into contact with the contact portions 2a of the contact pins 2.
Thus, the mounting of the IC device into the IC socket is completed and the electrical connection between the lead terminal L and the contact pin 2 is made. At this time, the closed state of the holding portions 2a and 2a 'is held by the elasticity of the coil spring 5. You. On the other hand,
When removing the IC device from the IC socket,
The IC device can be pulled down from the socket body 1 and easily removed by pushing down the operating portions 3b, 3b 'of 3' again to open the holding portions 3a, 3a '.

Thus, the holding parts 3a, 3a 'and the operating parts 3b, 3b'
The control unit is located on the opposite side opposite to 4 'and from the shaft 4, 4'
The length to the tip of 3b, 3b 'is from the shaft 4, 4' to the holding part 3a, 3a '.
Holder 3a, 3 so that it is longer than the length to the tip of
a 'and the operation parts 3b, 3b' are provided with stoppers 3, 3 'supported by shafts 4, 4', and the coil spring 5 is pivoted so that the holding parts 3, 3 'pivot in the closing direction. With this arrangement, the IC device can be attached and detached by a simple operation of pressing down the operation portions 3b, 3b 'of the stopper 3 and releasing the pressing force, and operating from the shafts 4, 4'. Part 3b,
The force required to push down the operating parts 3b, 3b 'by making full use of the leverage principle, the length to the tip of 3b' being longer than the length from the shafts 4, 4 'to the tip of the holding parts 3a, 3a' Therefore, the degree of fatigue of the worker can be reduced, and the working time can be significantly reduced. The ability to perform such a simple operation is extremely advantageous for automation, and a significant improvement in work efficiency can be expected. Furthermore, unlike the lock type as in the conventional example, the number of components for maintaining the closed state is reduced, so that the cost can be reduced.

In the above embodiment, an example of a flat type IC device has been described. In addition, as shown in FIG. 3, two or more pairs of stoppers are urged to form an LCC type (leadless chip device).
Carrier), PLCC type (plastic leadless chip carrier), QFP type (quad flat package, etc.) can of course be applied effectively. In these cases, the main body of the IC device Side (mold part)
Is pressed by the stopper of the stopper, thereby connecting the lead terminal and the contact pin. Furthermore, pressing the contact pin from the side again,
The pressing portion of the stopper and the operating portion may be configured to have, for example, an acute angle relationship so that the contact pin contacts the lead on the side surface of the IC device. Instead of the coil spring 5,
Socket body 1 and stoppers 3, 3 'at appropriate places outside shafts 4, 4'
An elastic means such as a compression coil spring may be interposed between the operating portions 3b and 3b 'to urge the pressing portions 3a and 3a' in the closing direction.

〔The invention's effect〕

As described above, the IC socket according to the present invention has a reduced number of components and can be inexpensive as compared with the conventional one (lock type). Further, since a simple operation of depressing the stopper and releasing the depression after mounting the IC device is sufficient, equipment for automation can be simplified. The open top structure has the advantages that the mounting state of the IC device can be easily checked visually, and that it has sufficient durability.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an operation state of an IC socket according to an embodiment of the present invention, FIG. 2 is a plan view of the IC socket according to the present invention, and FIG. 3 shows a modified example of the IC socket of the present invention. FIG. 4 is a plan view, and FIGS. 4 and 5 are partially broken front views showing the operation state of the conventional IC socket. 1 Socket body, 2 Contact pin, 2a Contact part, 3, 3 'Stopper, 3a, 3a' Press part, 3b, 3
b ': Operating section, 4, 4': Shaft, 5: Coil spring, L: Lead terminal.

Claims (1)

(57) [Claims] A contact portion having a contact portion on which a lead terminal of an IC device is placed and which can be pressed substantially upward is arranged, and a support portion for holding a shaft arranged to rotate a stopper is provided. A socket main body having at least one pair facing each other, and pressing the lead terminal mounted on a contact portion of the contact pin from above on one end side to elastically deform the contact pin in a substantially downward direction; A pressing portion that can hold the lead terminal is formed by the contact portion of the contact pin, which has a reaction in the upward direction due to the elastic deformation of the pressing portion, and the pivoting portion of the pressing portion is provided at the other end. Is formed, and the pressing section and the operating section are located on the opposite side to the axis and the length from the axis to the tip of the operating section is from the axis to the tip of the pressing section. Ratio to length The holding portion and the operating portion are supported by the shaft so as to be longer, and at least one pair of the socket bodies oppose each other so that the shaft can press and rotate the operating portion in the downward direction. At least one pair of opposed stoppers held by a support portion, and the stopper is biased so that the pressing portion can be pivoted in the direction of the contact portion of the contact pin to elastically deform the contact pin substantially downward. An elastic means is provided, and by pressing and rotating the operation part of the stopper substantially downward, the holding part is rotated substantially upward so that the IC device can be placed thereon, By releasing the pressing of the operation unit, the pressing unit is rotated substantially downward, so that the IC device placed above and the contact pin are elastically contacted and the elastic contact state is maintained. IC socket, characterized in that it was.