JP2003217775A - Electric connecting method of ic socket, and ic socket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the contact force of a contact in its opening by increasing the pressing quantity of a fixed-side elastic contact piece to the external terminal of an IC package without changing the stress applied to a moving-side elastic contact piece. <P>SOLUTION: This electric connecting method of IC socket for installing the IC package to an IC socket having a plurality of nipping type contacts to form an electric connection comprises a process for releasing the pressing of the moving-side elastic contact piece of the contact to bring it into contact with the external terminal of the IC package by elastic restoration and pressing the fixed-side elastic piece to enhance the contact force. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention opens and closes contacts of a socket body and external contacts of an IC package.
The present invention relates to an electrical connection method for a C socket and an IC socket, and more particularly, to an electrical connection for an IC socket in which a moving side elastic contact piece of a contact and a fixed side elastic contact piece are applied by sandwiching an external contact of an IC package. It relates to a connection method and an IC socket.

[0002]

2. Description of the Related Art Conventionally, an IC package or the like as an electric component is mounted on a socket body of an IC socket, and a grid-shaped moving plate is laterally moved to open and close a sandwiching contact to form an IC package. I tried to connect
C sockets are known.

In such a conventional IC socket, the sandwiching contact is formed by arranging the moving side elastic contact piece and the fixed side elastic contact piece so as to extend substantially parallel to each other, and the moving side elastic contact piece is almost "dumb". It is formed by bending it in a single step or in a double step in an inverted V shape or an inverted "U" shape, and is configured to sandwich the external contact of the IC package by the contact and connect.

An example of contacts in such a conventional IC socket is shown in FIGS. 3 and 4.

As shown, the IC socket 100
Is a fixed socket body 102 composed of a substrate.
And a grid-like moving member 103 such as a slider that is laterally moved by a cover member (not shown) that can move up and down with respect to the fixed socket body 102, a fixed-side elastic contact piece 105, and a movable-side elastic member. It is composed of a plurality of contacts 104 having contact pieces 106.

Further, such an IC socket 100
In order to increase the spring force of the contact 104 toward the inside of the moving side elastic contact piece 106 and increase the repulsive force to the fixed side elastic contact piece 105,
In the free state of No. 3, it is formed by bending in a step or two steps into a substantially "U" shape, or an almost inverted "U" shape, and the tips of the fixed-side elastic contact piece 105 and the movable-side elastic contact piece 106 are formed. The external terminals 111 of the IC package 110 are configured to be fitted and connected between the contact portions of the.

[0007]

However, in such a conventional IC socket 100, the contact 1
The contact force of 04 is obtained by merely pressing the external terminal 111 such as the solder ball of the IC package 110 against the fixed elastic contact piece 105 by the movable elastic contact piece 106.
Is going to get an electrical connection with. Therefore, when the contact force of the contact 104 is increased, the stress applied to the moving side elastic contact piece 106 of the contact 104 at the time of opening increases, so that there is a problem that the life of the contact 104 is shortened and deteriorated. To be

Therefore, in order to solve such a conventional problem, an object of the present invention is to provide an IC package of a fixed side elastic contact piece without changing the stress applied to the movable side elastic contact piece when the contact is opened. Another object of the present invention is to provide an IC socket in which the contact force can be increased by increasing the amount of pressing to the external terminal.

[0009]

In order to achieve the above object, an electrical connection method for an IC socket according to the present invention is an IC socket having a plurality of pinch contacts.
In an electrical connection method for an IC socket in which a C package is mounted to form an electrical connection, the IC on the contact side is elastically restored by releasing the restraint of the moving-side elastic contact piece of the contact.
The method is characterized by including a step of increasing the contact force by pressing the fixed-side elastic contact piece while contacting the external terminal of the package.

Further, in the method of electrically connecting the IC socket of the present invention, the contact force increasing step pushes the fixed elastic contact piece inwardly after releasing the suppression of the movable elastic contact piece. Is characterized by.

Further, the electrical connection method of the IC socket of the present invention is characterized in that, in the contact force increasing step, the contact is opened and closed by the movement of the slider.

Furthermore, in the method of electrically connecting the IC socket of the present invention, the step of increasing the contact force is performed by moving the first and second slider members of the slider in opposite directions in which the operating directions are opposite to each other. It is characterized by

The method of electrically connecting an IC socket of the present invention is characterized in that the first and second slider members of the slider are actuated by a first cam and a second cam, respectively.

The IC socket of the present invention is an IC socket in which an IC package is mounted on an IC socket having a plurality of pinch-shaped contacts to form an electrical connection, and the contacts are fixedly mounted on the socket body. A cover member that can move up and down, and a slider that opens and closes the contact, and the contact is fixed to each other at a base end portion so that the fixed elastic contact piece and the movable elastic contact piece extend substantially in parallel, It is characterized in that the fixed side elastic contact piece is pressed to increase the contact force of the contact.

Further, the IC socket of the present invention is characterized in that the slider for opening and closing the contact is formed so as to be individually movable laterally in opposition from the first slider member and the second slider member.

Furthermore, the IC socket of the present invention is characterized in that the first slider member presses the movable elastic contact piece in the opening direction.

The IC socket of the present invention is characterized in that the second slider member presses the fixed side elastic contact piece in a closing direction.

Further, the IC socket of the present invention is characterized in that at least one bent portion is provided on the movable side elastic contact piece.

Further, the IC socket of the present invention is characterized in that the first slider member is operated by a first cam and the second slider member is operated by a second cam.

Furthermore, the IC socket of the present invention is characterized in that the first cam and the second cam are provided on the cover member.

Other objects, features and advantages of the present invention will be apparent from the following detailed description of the embodiments of the IC socket of the present invention shown in the accompanying drawings.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment) FIGS. 1 and 2 show an IC for carrying out the method for electrically connecting an IC socket according to the present invention.
FIG. 1 is a schematic cross-sectional view showing an embodiment of a socket, FIG. 1 is a view when a contact is in a free state, and FIG. 2 is a view when the contact is in an open state.

As shown in FIG. 1, the IC socket of the present invention is of a type I having a plurality of interposing contacts for mounting an IC package to form an electrical connection.
C socket with ball grid array type I
It applies to C packages. The IC socket 1 according to the present invention as described above is provided with a socket body 2, a cover member 3 provided to be movable up and down with respect to the socket body 2, and a reciprocating movable horizontally with respect to the socket body 2. And a grid-like slider 4 and an IC fixedly mounted at the base end portion of the socket body 2
It has a plurality of interposing contacts 5 that form an electrical connection with the package 10 and a pedestal 8 that is arranged on the slider 4 and on which the IC package 10 is mounted.

In such an IC socket 1 of the present invention, the socket body 2 has a plurality of contacts 5 fixed thereto, and the cover member 3 is provided so as to be vertically movable with respect to the socket body 2. . The cover member 3 is provided with a first cam 15 and a second cam 16 projecting downward, and the first slider member 6 of the slider 4 is pressed by the first cam 15 and the second cam 16 when the cover member 3 is pressed. The second slider member 7 and the second slider member 7 can be individually reciprocated in the horizontal direction.

The slider 4 is composed of a grid-like first slider member 6 and a second slider member 7 which are arranged in a vertically overlapping state as shown in the drawing.
The first cam 15 of the cover member 3 is arranged to move the first slider member 6 in the lateral direction, and the second cam 16 is arranged to move the second slider member 7 in the opposite lateral direction. The first slider member 6 is formed so as to be located above the second slider member 7.

Further, the contacts 5 are arranged so as to penetrate through the lattice-shaped openings of the first slider member 6 and the second slider member 7 of these sliders 4, and
The pressing portion 17 of the first slider member 6 and the pressing portion 18 of the second slider member 7 are arranged on the moving side of the contact 5 so that the contact 5 is opened and closed by the lateral movement of the slider member 6 and the second slider member 7. The elastic contact piece 14 and the fixed-side elastic contact piece 12 are arranged so as to come into contact with each other. Further, a spring member 9 such as a coil spring is provided between the side wall of the socket body 2 and the second slider member 7, and the second slider member 7 is illustrated by the spring member 9 in FIG. It is formed to elastically press to the left.

Furthermore, the contact 5 is composed of a fixed side elastic contact piece 12 and a movable side elastic contact piece 14,
The fixed-side elastic contact piece 12 and the movable-side elastic contact piece 14 are fixed to each other at the lower end, which is the base end portion, and are fixedly mounted on the socket main body 2 as a substrate. Are formed so as to extend substantially parallel to each other, and the upper ends thereof are free so that the external terminals 11 of the IC package 10 can be sandwiched and electrically connected.

In the contact 5 of the IC socket 1 of the present invention as described above, the fixed-side elastic contact piece 12 extends substantially straight upward as shown in the drawing, and an opening formed in the bottom portion of the socket body 2. Alternatively, it extends upward along the side wall of the hole and penetrates the lattice-shaped opening portion of the second slider member 7, and further extends into the pedestal 8 through the lattice-shaped opening portion of the first slider member 6. ing. Furthermore, the movable elastic contact piece 14 is bent into a substantially inverted V shape as shown in the figure. Of course, the moving-side elastic contact piece 14 can be bent not only in a substantially inverted V shape but also in a zigzag shape in two steps, and the bending shape can be appropriately selected to any shape. Can be formed.

Now, such an IC socket 1 of the present invention
In the contact 5, the moving-side elastic contact piece 14, which is bent in a substantially inverted V-shape, normally contacts the external terminal 11 of the IC package 10 and presses it toward the inside by self-elasticity. ing. Therefore, the contact force of the contact 5 is generated when the moving-side elastic contact piece 14 presses the external terminal 11 such as the solder ball of the IC package 10 against the fixed-side elastic contact piece 12. Since the displacement amount of the elastic contact piece 14 does not change quantitatively, the stress applied to the moving side elastic contact piece 14 is constant and does not change.

In the contact 5 of the IC socket 1 of the present invention thus constructed, the movable elastic contact piece 14 is
As shown in FIG. 1, when the cover member 3 is pressed and pushed down, the first cam 15 of the cover member 3 hits an upper right corner of the first slider member 6 of the slider 4 to move the first slider member 6 laterally. By moving in the left direction, the moving-side elastic contact piece 14 is pressed in the opening direction via the pressing portion 17 as shown in FIG. 2, and is opened to the open state, that is, the open state.

At the same time, the second cam 16 of the cover member 3 hits the upper left corner of the second slider member 7 of the slider 4 to press the second slider member 7 rightward against the spring force of the spring member 9. The pressing portion 18 is the fixed side elastic contact piece 12
The fixed-side elastic contact piece 12 is released to a free state, so that the tip of the fixed-side elastic contact piece 12 is separated from the external terminal 11 of the IC package 10 and is freed as shown in FIG. Therefore, the IC package 10 can be taken out from the pedestal 8 and can be replaced with a new IC package 10 and mounted.

In the open state where the contact 5 is opened, the IC package mounting portion of the base 8 is I-shaped.
After the C package 10 is mounted, if the pressing of the cover member 3 is stopped to free the cover member 3, the cover member 3
Is pushed upward by a spring member (not shown) attached to the socket body 2, so that the external terminal 11 of the IC package 10 is fixed to the fixed elastic contact piece 12 and the movable elastic contact piece as shown in FIG. It is sandwiched by 14 and is electrically connected to the contact 5 as shown in the drawing.

In particular, at this time, the fixed side elastic contact piece 12 is
Since the pressing portion 18 of the second slider member 7 that is pressed by the spring member 9 pushes inward, the contact force is added and increased by the fixed-side elastic contact piece 12, and the outside of the IC package 10 is increased. The contact force can be increased by increasing the pressing amount of the fixed-side elastic contact piece 12 against the terminal 11, without changing the stress applied to the moving-side elastic contact piece 14, and thus without changing the life of the contact 5. , Suitable electrical connection can be obtained.

As shown in the figure, in the IC socket 1 of the present invention, the contact 5 is fixed to the socket main body 2 at the base end portion thereof, and has a pair of fixed side elastic contact piece 6 and moving side elastic contact piece 7. And the pressing portions 17 and 18 of the slider 4 composed of the first slider member 6 and the second slider member 7 in the shape of a lattice or a comb tooth are fixed side elastic contact pieces 12 and movable side elastic contact pieces. Since the slider 4 is disposed so as to be sandwiched between the slider 14 and the slider 14, the slider 4 moves laterally so as to apply a contact force to the fixed-side elastic contact piece 12 of the contact 5. The fixed-side elastic contact piece 12 and the moving-side elastic contact piece 14 are actuated so as to be separated or close to each other, so that the fixed-side elastic contact piece 12 and the movable-side elastic contact piece 14 are separated from each other. External connection of IC package 10 11 it is possible to contact sandwich to fit the are formed so as to better open. In particular, in this embodiment, the contact 5 at the time of closing
By applying the contact force by the second slider member 7 of the slider 4 to the fixed side elastic contact piece 12, it is possible to increase the contact force due to the favorable pinching of the external terminal 11 of the IC package 10.

[0035]

As described above, according to the first aspect of the present invention.
The electrical connection method of the IC socket described is the electrical connection method of an IC socket in which an IC package is mounted on an IC socket having a plurality of pinch-type contacts to form an electrical connection, and elasticity of the moving side of the contacts is used. Since the step of releasing the pressing of the contact piece to bring it into contact with the external terminal of the IC package by elastic recovery and pressing the fixed side elastic contact piece to increase the contact force, the contact force is increased by the fixed side elastic contact piece. Since the additional force is increased, the contact amount can be increased by increasing the pressing amount of the fixed-side elastic contact piece against the external terminal of the IC package, without changing the stress applied to the moving-side elastic contact piece. Therefore, it is possible to obtain a suitable electrical connection without changing the life of the contact.

In the electrical connection method for an IC socket according to a second aspect of the present invention, in the contact force increasing step, the fixed elastic contact piece is inwardly moved after the suppression of the movable elastic contact piece is released. Since it is pressed, it can be operated easily, easily and surely.

In the method of electrically connecting the IC socket according to the third aspect of the present invention, since the contact is opened and closed by the movement of the slider in the contact force increasing step, the contact can be opened and closed surely.

According to a fourth aspect of the present invention, in the method of electrically connecting the IC socket, the contact force increasing step is performed by moving the first and second members of the slider in opposite directions in which the operating directions are opposite to each other. Since it is performed, it can operate clearly and surely.

In the electrical connection method of the IC socket according to the fifth aspect of the present invention, the first and second slider members of the slider are actuated by the first cam and the second cam, respectively, so that a simple mechanism is provided. It can be formed reliably and can operate reliably.

The IC socket according to claim 6 of the present invention is
An IC in which an IC package is mounted on an IC socket having a plurality of pinch-type contacts to form an electrical connection
The socket has a socket body to which the contact is fixed, a cover member that can move up and down, and a slider that opens and closes the contact, and the contact has a fixed-side elastic contact piece and a movable-side elastic contact piece. Since they are fixed to each other at their base ends so as to extend in parallel and press the fixed side elastic contact piece to increase the contact force of the contact, the contact force is added by the fixed side elastic contact piece and increased. , The contact force can be increased by increasing the pressing amount of the fixed side elastic contact piece against the external terminal of the IC package,
A suitable electrical connection can be obtained without changing the stress applied to the moving-side elastic contact piece and without changing the life of the contact.

The IC socket according to claim 7 of the present invention is
Since the slider that opens and closes the contact is formed so as to be individually movable in the opposing lateral direction from the first slider member and the second slider member, the slider can be operated easily, easily, and surely.

The IC socket according to claim 8 of the present invention is
Since the first slider member presses the moving-side elastic contact piece in the opening direction, the contact can be opened and closed easily and surely.

The IC socket according to claim 9 of the present invention is
Since the second slider member presses the fixed-side elastic contact piece in the closing direction, the contact force between the IC package and the contact can be increased, and good electrical connection can be obtained.

In the IC socket according to the tenth aspect of the present invention, since at least one bent portion is provided in the movable elastic contact piece, it is possible to achieve good sandwiching contact of the contacts.

According to the eleventh aspect of the present invention, the first slider member is operated by the first cam and the second slider member is operated by the second cam, so that the IC socket is manufactured to have a simple structure. And can operate reliably.

According to the twelfth aspect of the present invention, since the first cam and the second cam are provided on the cover member, the IC socket can be easily manufactured and assembled with a simple structure. The contact opening / closing operation can be performed easily and surely.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing, in a contact free state, an embodiment of an IC socket for carrying out an electrical connection method for an IC socket according to the present invention.

FIG. 2 is a schematic cross-sectional view showing the IC socket of the present invention in FIG. 1 in a contact open state.

FIG. 3 is a schematic vertical sectional view showing a part of a contact of a conventional IC socket in a free state.

4 is a schematic sectional view showing the contacts of the conventional IC socket of FIG. 3 in an open state.

[Explanation of symbols]

1 IC socket 2 socket body 3 Cover member 4 slider 5 contacts 6 First slider member 7 Second slider member 8 pedestals 9 Spring member 10 IC package 11 External terminal 12 Fixed side elastic contact piece 14 Moving side elastic contact piece 15 first cam 16 Second Cam 17 Pressing part 18 Pressing part

Claims (12)

[Claims] 1. A method for electrically connecting an IC socket, wherein an IC package is mounted on an IC socket having a plurality of pinch-shaped contacts to form an electrical connection, in which the suppression of a movable elastic contact piece of the contact is released. And the step of contacting the external terminals of the IC package by elastic recovery and pressing the fixed side elastic contact piece to increase the contact force. 2. The IC socket according to claim 1, wherein, in the contact force increasing step, the fixed elastic contact piece is pressed inwardly after the suppression of the movable elastic contact piece is released. Electrical connection method. 3. The method for electrically connecting an IC socket according to claim 2, wherein in the contact force increasing step, the contact is opened and closed by moving a slider. 4. The IC socket according to claim 3, wherein the step of increasing the contact force is performed by moving the first and second slider members of the slider in opposite directions in which the operating directions are opposite to each other. Electrical connection method. 5. The method of electrically connecting an IC socket according to claim 4, wherein the first and second slider members of the slider are actuated by a first cam and a second cam, respectively. 6. An IC socket in which an IC package is mounted on an IC socket having a plurality of sandwiched contacts to form an electrical connection, the socket body having the contacts fixed thereto, and a cover member movable up and down. And a slider that opens and closes the contact, the contact being fixed to each other at the base end so that the fixed elastic contact piece and the movable elastic contact piece extend substantially in parallel, and the fixed elastic contact piece An IC socket characterized by being pressed to increase the contact force of the contact. 7. The IC socket according to claim 6, wherein a slider that opens and closes the contact is formed so as to be individually movable in a lateral direction opposed to each other from the first slider member and the second slider member. 8. The first slider member presses the moving-side elastic contact piece in an opening direction.
The described IC socket. 9. The IC socket according to claim 7, wherein the second slider member presses the fixed-side elastic contact piece in a closing direction. 10. The IC socket according to claim 6, wherein the movable elastic contact piece is provided with at least one bent portion. 11. The I according to claim 7, wherein the first slider member is operated by a first cam, and the second slider member is operated by a second cam.
C socket. 12. The IC socket according to claim 11, wherein the first cam and the second cam are provided on the cover member.