JPH1126122A - Ic socket structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount/dismount an IC element and make automatic inspection of the IC element possible by rotating the IC element by applying displacement in the vertical direction to a printed circuit board and bringing a lead terminal of the IC element into contact with conducting rubber by applying a load. SOLUTION: An IC element 40 is positioned to a printed circuit board 50, and a lead terminal 41 is placed on pressure sensitive conducting rubber 13 electrically connected to a conductive pattern of the printed circuit board 50. A cover 3 is lowered and displacement in the vertical direction to the printed circuit board 50 is applied to first to fourth actuator parts 2A-2D through a lever part 16. The lever part 16 is rotated, applies a load to the lead terminal 41 of the IC element 40 to bring the lead terminal 41 into contact with pressure sensitive conducting rubber 13 for conducting electrical contact. The replacement of an IC socket is made easy, and maintenance capability of a testing board is enhanced. Since the operating direction of the actuator parts 2A-2D and the mounting 1 dismounting direction of the IC element are the same vertical direction, automation of inspection is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC socket structure used in an IC inspection process or the like.

[0002]

2. Description of the Related Art As a conventional IC socket structure, as disclosed in Japanese Utility Model Laid-Open No. 4-53184,
A large number of lead terminals protruding in the lateral direction of the C element are mounted on the socket body so as to correspond in one-to-one correspondence with the contact pins soldered to the through holes of the printed circuit board and connected to the lead terminals. There is one that can make an electrical connection.

[0003] That is, as shown in FIG. 12, a lead terminal pressing portion 32 is connected to a contact pin 30 via a spring portion 31, and a lever portion 33 is provided on the lead terminal pressing portion 32 so that a cover 34 is pressed downward. As a result, the spring portion 31 is bent, and the lead terminal pressing portion 32 is moved to the lead terminal mounting portion 35.
The cover 34 is lifted by the spring force of the spring portion 31 by setting the IC element 36 further away, placing the lead terminal 37 on the lead terminal placement portion 35, and releasing the downward pressing of the cover 34. At the same time, the lead terminal 37 is pressed by the lead
And the lead terminals 37 are electrically connected.

[0004]

However, the conventional socket structure for ICs has a large number of contact pins 30 arranged in the socket body, and the contact pins 30 are inserted into the through holes 39 of the printed circuit board 38. There is a problem that replacement of the IC socket is difficult due to the soldering.

In order to solve such a problem, it is required to use a pressure-sensitive conductive rubber instead of the contact pin 30 to electrically connect to the lead terminal 37. An elastomer connector using a conductive rubber is often used as a single piece of a pressure-sensitive conductive rubber, and requires a holding portion for holding the pressure-sensitive conductive rubber separately from the pressure-sensitive conductive rubber. For this,
It is difficult to attach and detach, is often used for connection between a liquid crystal and a substrate, and is not suitable for applications such as IC sockets where IC elements are frequently replaced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make it possible to make an electrical connection with a lead terminal using conductive rubber, Provided is an IC socket structure that not only facilitates the work of exchanging the socket for the IC and improves the maintainability of the test board, but also facilitates the attachment and detachment of the IC element and can easily respond to the automation of the inspection of the IC element. It is in.

[0007]

To achieve the above object, an IC socket structure according to the first aspect of the present invention comprises:
Positioning the C element with respect to the printed circuit board;
A base on which a lead terminal of an element is mounted, and a conductive rubber mounted on a conductive pattern of the printed circuit board is mounted; and the IC is rotated by applying a displacement in a vertical direction to the printed circuit board. An actuator unit for applying a load to the lead terminal of the element to bring the lead terminal into contact with the conductive rubber.

With this configuration, the IC element is positioned with respect to the printed circuit board, and the lead terminals of the IC element are
The actuator is rotated by applying a vertical displacement to the printed circuit board with respect to the printed circuit board in a state of being placed on a conductive rubber conductive to the conductive pattern of the printed circuit board.
By applying a load to the lead terminal of the C element, the lead terminal can be brought into contact with the conductive rubber.

As described above, the electrical connection with the lead terminal can be made by using the conductive rubber, so that the replacement work of the IC socket is facilitated, and the maintenance of the expensive test board is greatly improved. Can be done. In addition, since the operation direction of the actuator unit is set to the vertical direction, which is the same direction as the mounting / dismounting direction of the IC element, not only is the mounting / dismounting of the IC element easy, but also an indispensable IC socket used in the IC element inspection process. It can easily respond to automation, which is an element.

In order to achieve the above object, an IC socket structure according to a second aspect of the present invention is the IC socket structure according to the first aspect, wherein the printed circuit board is provided with the IC element in a base body. IC positioning with respect to
An accommodating portion was provided, and a conductive rubber mounting portion was formed on the base body in parallel with each side of the IC accommodating portion, and the conductive rubber was mounted on these conductive rubber mounting portions. .

According to this configuration, not only the operation and effect of the first aspect of the invention can be achieved, but also the conductive rubber can be securely attached to the base body.

According to a third aspect of the present invention, there is provided an IC socket structure according to the third aspect of the present invention, wherein the actuator portion is provided with a lead terminal pressing portion. A spindle portion is provided at an end portion, a lever portion is formed at a base end portion of the lead terminal pressing portion, and the actuator portion is rotatably attached to the base body with the spindle portion, and A lever portion is slidably attached to the cover, and the I on the conductive rubber mounting portion is mounted on the conductive rubber mounting portion at the lead terminal pressing portion of the actuator portion by the urging force of an elastic member.
The lead terminal of the C element was pressed.

With this configuration, not only can the operation and effect of the first aspect of the present invention be exerted, but also by pushing down the cover, the actuator portion can be supported with the support shaft portion as a fulcrum against the urging force of the elastic member. Then, the IC element is set, the lead terminals of the IC element are placed on the conductive rubber, and the pressing force to the cover is released, and the actuator is rotated by the urging force of the elastic member, The lead terminal pressing portion presses the lead terminal on the conductive rubber, so that the lead terminal can be reliably brought into contact with the conductive rubber.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an IC socket structure according to the present invention, in which an IC element is set, FIG. 2 is a perspective view of the IC socket structure, in which a part of the IC element is set, and FIG. FIG. 3 is a perspective view of the IC socket structure with an IC element set and a cover removed.

The IC socket structure according to the present invention includes a base 1, an actuator unit 2, and a cover 3. The base 1 has a base main body 1A as shown in FIG. 4, and a square IC accommodating section 5 is provided at the center of the base main body 1A. An angular opening 6 is formed. And this I
At four corners of the C accommodating portion 5, a positioning portion 5A for abutting the corner of the IC element and positioning the IC element is formed. Further, first to fourth corner forming portions 7A, 7B, 7C and 7D are formed at four corner portions of the base body 1A, and these first to fourth corner forming portions 7A and 7D are formed.
B, 7C and 7D are provided with mounting holes 8 respectively.

The base body 1 is provided between the first corner forming section 7A and the second corner forming section 7B, and the second corner forming section 7A.
B and the third corner forming portion 7C, between the third corner forming portion 7C and the fourth corner forming portion 7D, and between the fourth corner forming portion 7D and the first corner forming portion 7D.
Connecting portions 9 are formed between the corner forming portions 7A, respectively, and these four connecting portions 9 form the four side walls 5a, 5b, 5c, and 5d of the IC housing portion 5. doing.

The connecting portion 9 has a first corner forming portion 7A.
Between the second corner forming part 7B, the second corner forming part 7B and the third corner forming part 7C, between the third corner forming part 7C and the fourth corner forming part 7D, and An opening is formed in the rectangular conductive rubber mounting portion 10 between the fourth corner forming portion 7D and the first corner forming portion 7A. These conductive rubber mounting portions 10 include pressure-sensitive conductive rubber (conductive rubber).
A stopper 11 is formed in an eave shape to prevent the pressure-sensitive conductive rubber from slipping upward when an (elastomer) is inserted (see FIG. 6). A receiving portion 12 is formed on the outer edge of the connecting portion 9, and a receiving surface 12 </ b> A having an arc-shaped cross section is formed on the upper surface of the receiving portion 12.

The first and second corner forming parts 7A and 7B face each other, and the second and third corner forming parts 7B and 7C face each other. The mutually facing surfaces of the third corner forming portion 7C and the fourth corner forming portion 7D and the mutually facing surfaces of the fourth corner forming portion 7D and the first corner forming portion 7A respectively have A shaft guide groove 28 is formed on the shaft.

The pressure-sensitive conductive rubber 13 is mounted on the conductive rubber mounting portion 10.
3 has its upper part received by the stopper portion 11 and is prevented from coming out upward.

As shown in FIG. 7, the actuator section 2 is provided with a lead terminal holding section 14 having a beak-shaped cross section, and the lead terminal holding section 14 has a width dimension corresponding to the first corner forming section 7.
A and the second corner forming portion 7B face each other (second surface).
Opposing surfaces of the corner forming portion 7B and the third corner forming portion 7C, opposing surfaces of the third corner forming portion 7C and the fourth corner forming portion 7D, and a fourth corner forming portion. 7D and the first corner angle forming portion 7A).

A support shaft 15 is provided at the base end of the lead terminal holding portion 14. Both ends 1 of the support shaft 15 are provided.
5A protrudes outward from both end surfaces of the lead terminal holding portion 14. Also, at the base end of the lead terminal holding portion 14,
A pair of lever portions 16 are formed at a predetermined angle with respect to the support shaft portion 15, and a shaft portion 17 is formed on the front side of the opposing surface portions of the pair of lever portions 16.

As shown in FIG. 3, the cover 3 has a cover body 3A having a square shape in plan view, and an opening 18 having a square shape in plan view is formed at the center of the cover body 3A. The four corners of the opening 18 are in contact with the corners of the IC element 40,
The positioning part 18a which performs positioning of is formed. A wall 19 is formed around the four sides of the cover main body 3A around the periphery of the cover main body 3A, and the wall 19 has a portion corresponding to the four sides of the cover main body 3A. A pair of cantilever portions 23 are provided at the center by forming cut grooves 20, 21 and 22, and a shaft holding portion 24 is formed at an end of these cantilever portions 23.

The first corner forming portion 7 of the base 1
By inserting and pushing both ends 15A of the support shaft portion 15 into the respective shaft guide grooves 28 of the mutually opposing surfaces of the second corner angle forming portion 7B and the support portion 15, the support shaft portion 15 is received.
Rotatably abuts the receiving surface 12A of the support shaft 1
The first actuator portion 2A is rotatably held about the support shaft portion 15 by the base 1 by rotatably receiving the both end portions 15A of the shaft 5 by the arc portion 28a of the shaft guide groove portion 28.

The second corner forming portion 7B of the base 1
In the same manner as the mounting of the first actuator section 2A, the second actuator section 2B is provided between the third corner forming section 7C and the third corner forming section 7D. In the same manner, the third actuator section 2C is connected to the fourth corner forming section 7 in the same manner as the mounting of the first actuator section 2A.
Fourth actuator parts 2D are attached between D and the first corner forming part 7A in the same manner as the attachment of the first actuator part 2A.

In this case, torsion springs 25 as elastic members are provided at both end portions 15A of the support shaft portions 15 of the first to fourth actuator portions 2A to 2D, and one end portions of these torsion springs 25 are provided. The other end 25b of the torsion spring 25 is locked to the base 1 and the first torsion spring 25 is biased by the biasing force of the torsion spring 25.
In the fourth to fourth actuator units 2A to 2D, the beak-shaped lead terminal holding unit 14 rotates downward about the respective support shaft unit 15 as a fulcrum.

The first to fourth actuator units 2
A pair of lever portions 16 of A to 2D are inserted into the wall portion 19 with the cantilevered portion 23 of the cover 3 inside, and the lever portion 1
6, the shaft portion 17 is attached to the shaft holding portion 24 of the cantilevered portion 23,
It is held reciprocally at the center of the cover 3.

Next, a description will be given of a performance test of the IC element 40 using the IC socket S configured as described above.
As shown in FIG. 9, the IC socket S is mounted on the printed circuit board 5 by using a screw member (not shown) using the mounting holes 8 of the first to fourth corner forming portions 7A, 7B, 7C, 7D of the base 1.
0, and the pressure-sensitive conductive rubber 13 attached to the base 1 is provided with a conductive pattern (IC
Connection electrode) (not shown).

When the IC element 40 is not set in the IC housing 5, the first to fourth actuators 2
A to 2D show that the beak-shaped lead terminal holding portion 14 is pivoted downward toward the IC housing portion 5 around each support shaft portion 15 by the biasing force of the torsion spring 25, and the lead terminal holding portion 1
4 is in contact with the pressure-sensitive conductive rubber 13.

In this state, the pair of levers 16 of the first to fourth actuators 2A to 2D lift the cover 3, and the shaft 17 of the lever 16 is
4 is located at the end side.

Therefore, when performing a performance test of the IC element 40, the cover 3 is pushed down to
As shown in FIG. 9, the first to fourth actuators 2 </ b> A to 2 </ b> D are supported by levers 16, each supporting shaft 15 as a fulcrum, against the urging force of the torsion spring 25, and
The lead terminal holding portion 14 is moved away from the pressure-sensitive conductive rubber 13 by rotating the lead 4 outward.

Then, the IC element 40 is set in the IC housing 5 and the lead terminal 41 of the IC element 40 is brought into contact with the pressure-sensitive conductive rubber 13. In this state, when the downward pressing force applied to the cover 3 is released, FIG.
As shown in FIG. 11, the urging force of the torsion spring 25 causes
The fourth actuator units 2A to 2D are rotated downward about the support shafts 15 toward the IC accommodating unit 5 with the lead terminal pressing unit 14 as a fulcrum, and the lead terminal pressing unit 14 presses the lead terminal 41. Then, the lead terminal 41 is pressed against the pressure-sensitive conductive rubber 13.

When a performance test of another IC element 40 is to be performed, the cover 3 is pressed down so that the lead terminal holding portion 14 is pressed with the pressure-sensitive conductive rubber 1 as described above.
3 and set in another IC element 40 in the IC accommodating section 5, the lead terminal 41 of the IC element 40 is brought into contact with the pressure-sensitive conductive rubber 13, and the downward pressing force applied to the cover 3 again. Is released, the lead terminal 41 is pressed by the lead terminal pressing portion 14 by the urging force of the torsion spring 25, and the lead terminal 41 is pressed against the pressure-sensitive conductive rubber 13.

According to the above embodiment, the IC element 40 is positioned with respect to the printed circuit board 50,
In a state where the lead terminal 41 of the element 40 is placed on the pressure-sensitive conductive rubber 13 that conducts to the conductive pattern of the printed board 50, the first to fourth actuator units 2 </ b> A to 2 </ b> D are mounted in a direction perpendicular to the printed board 50. Is applied, a load is applied to the lead terminal 41 of the IC element 40, and the lead terminal 41 is connected to the pressure-sensitive conductive rubber 1.
3 can be contacted.

As described above, the electrical connection with the lead terminal 41 can be made by using the pressure-sensitive conductive rubber 13.
The work of replacing the IC socket S is facilitated, and the maintainability of the expensive test board can be dramatically improved. In addition, since the operation directions of the first to fourth actuator units 2A to 2D are set to the vertical direction, which is the same direction as the attachment / detachment direction of the IC element 40, not only the attachment / detachment of the IC element 40 is easy, but also the It is possible to easily cope with automation which is an indispensable element of the IC socket S used in the inspection process.

[0035]

As described above, according to the IC socket structure according to the first aspect of the present invention, the IC element is positioned with respect to the printed circuit board, and the lead terminals of the IC element are electrically connected to the printed circuit board. When the actuator is placed on conductive rubber which conducts to the pattern, the actuator is rotated by applying a vertical displacement to the printed circuit board to apply a load to the lead terminals of the IC element. Can be brought into contact with the conductive rubber.

As described above, not only the electrical connection with the lead terminals can be made by using the conductive rubber, but also the replacement work of the IC socket becomes easy, and the maintenance property of the expensive test board is dramatically improved. Can be improved. In addition, since the operation direction of the actuator unit is set to the vertical direction, which is the same direction as the mounting / dismounting direction of the IC element, not only is the mounting / dismounting of the IC element easy, but also an indispensable IC socket used in the IC element inspection process. It can easily respond to automation, which is an element.

According to the socket structure for an IC according to the second aspect of the present invention, not only can the above-described effects of the first aspect of the invention be achieved, but also the conductive rubber can be securely attached to the base body. Can be.

According to the IC socket structure of the third aspect of the present invention, not only can the above-mentioned effects of the first aspect of the invention be achieved, but also the pressing force of the elastic member can be reduced by pressing down the cover. By rotating the actuator part outward with the support part as a fulcrum, setting the IC element, placing its lead terminal on the conductive rubber, and releasing the pressing force on the cover, the elastic member With the urging force, the actuator portion is rotated, and the lead terminal pressing portion presses the lead terminal on the conductive rubber, so that the lead terminal can be reliably brought into contact with the conductive rubber.

[Brief description of the drawings]

FIG. 1 shows an IC socket structure according to the present invention.
It is a perspective view in the state where the C element was set.

FIG. 2 is a partially sectional perspective view of the IC socket structure in which an IC element is set.

FIG. 3 is a perspective view of the IC socket structure with an IC element set and a cover removed.

FIG. 4 is a perspective view of a base in the IC socket structure.

FIG. 5 is a plan view of the base.

FIG. 6 is a sectional view taken along line XX of FIG. 5;

FIG. 7 is a perspective view of an actuator unit in the IC socket structure according to the present invention.

FIG. 8 shows an IC socket structure according to the present invention;
It is a top view at the time of attachment / detachment of C element.

FIG. 9 is a sectional view taken along the line YY of FIG. 8;

FIG. 10 shows an IC socket structure according to the present invention.
FIG. 3 is a plan view of a mounted state of an IC element.

11 is a sectional view taken along the line ZZ in FIG.

FIG. 12 is a sectional view of a conventional IC socket structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Actuator part 2A 1st actuator part 2B 2nd actuator part 2C 3rd actuator part 2D 4th actuator part 3 Cover 5 IC accommodation part 10 Conductive rubber mounting part 13 Pressure sensitive conductive rubber (conductive 14) Lead terminal holding part 15 Support shaft part 16 Lever part 40 IC element 40 41 Lead terminal 50 Printed circuit board

Claims (3)

[Claims] 1. A base on which an IC element is positioned with respect to a printed circuit board, a lead terminal of the IC element is mounted, and a conductive rubber which is connected to a conductive pattern of the printed circuit board is mounted; And an actuator unit that rotates by applying a displacement in the vertical direction to apply a load to the lead terminal of the IC element to bring the lead terminal into contact with the conductive rubber. IC to do
Socket structure. 2. A base body having an IC accommodating portion for positioning the IC element with respect to the printed circuit board, and a conductive rubber mounting portion provided on the base body in parallel with each side of the IC accommodating portion. The conductive rubber is formed on the conductive rubber mounting portion, and the conductive rubber is mounted on the conductive rubber mounting portion.
2. The IC socket structure according to 1. 3. The actuator section, wherein a support shaft section is provided at a base end of a lead terminal holding section, and a lever section is formed at a base end of the lead terminal holding section. A pivot portion is attached to the base body so as to be rotatable, and the lever portion is slidably attached to the cover. The conductive rubber mounting portion is provided at the lead terminal pressing portion of the actuator portion by an urging force of an elastic member. 3. The IC socket structure according to claim 2, wherein said lead terminal of said IC element on said conductive rubber mounted on said conductive rubber is pressed.