JP2003163063A - Socket for electric part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a socket for an electric component in which a latch member can be disposed even if the height of the latch member is restricted. <P>SOLUTION: In an IC socket 11 having an socket main body 13 housing an IC package 12, the latch member 14 pressing the IC package 12 is provided turnably to the socket main body 13, and at the same time an operating member 15 turning the latch member 14 is provided vertically moveably. The latch member 14 is provided turnably between a pressed position in which the IC package 12 is pressed and an evacuated position to which the IC package 12 is evacuated from the pressed position. At the same time, the latch member 14 is provided movably downward from the evacuated position. A coil spring 17 is provided which energizes to an elevated position so as to turn the latch member 14 from the evacuated position to the pressed position. The latch member 14 is constructed so as to be lowered additionally after the latch member 14 positioned in the pressed position is pressed to be turned to the evacuated position against the energizing force of the coil spring 17, by lowering the operating member 15. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric component socket for detachably accommodating an electric component such as a semiconductor device (hereinafter referred to as "IC package"), and more particularly, a latch member for holding the accommodated electric component is provided. It also relates to a socket for electric parts.

[0002]

2. Description of the Related Art As a conventional socket for electric parts of this type, an IC socket for accommodating an IC package as an "electrical part" and conducting it with a circuit board to perform a performance test of the IC package. There is.

In this IC socket, contact pins electrically connected to or separated from the terminals of the IC package are arranged in the socket body, and a latch member for pressing the IC package housed in the socket body from above is provided. There is a socket that is rotatably provided and further has an operation member that is vertically movable on the socket body.

By moving this operating member up and down,
The contact pin is elastically deformed to be brought into contact with and separated from the IC package terminal, and the latch member is opened and closed to press or release the IC package.

[0005]

However, in such a conventional device, by lowering the operating member, the latch member pivots upward and is retracted from the IC package insertion range. Since the upper end of the latch member reaches a high position at this pivoting position (retracted position), it may be difficult to dispose the latch member if the height of the IC socket is restricted low.

[0006] Therefore, an object of the present invention is to provide an electrical component socket in which a latch member can be arranged even if the height is restricted.

[0007]

In order to achieve the above object, the invention according to claim 1 has a socket main body for accommodating an electric component, and the socket main body is provided with a latch member for pressing the electric component. In the socket for electric parts, which is rotatably provided, and in which an operation member for rotating the latch member is provided so as to be vertically movable, the latch member includes:
The latch member is provided so as to be rotatable between a pressing position for pressing the electric component and a retracted position retracted from the pressed position and capable of descending from the retracted position to move the latch member from the retracted position to the pressed position. An urging means for urging the urging means to rotate is provided, and the operating member is lowered, so that the latch member at the pressing position is pressed and retracts against the urging force of the urging means. It is characterized in that the socket for electrical parts is configured to be further lowered after being rotated to the position.

According to a second aspect of the present invention, in addition to the structure of the first aspect, the latch member is lowered in the posture in a substantially vertical direction while being rotated to the retracted position. It is characterized by being configured in.

The invention according to claim 3 is the invention according to claim 1 or 2.
In addition to the configuration described in (1), the latch member is formed with a shaft portion protruding laterally, a slit portion into which the shaft portion is inserted is formed in the socket main body, and the shaft portion is provided in the slit portion. By being guided, the latch member is provided so as to be rotatable and vertically movable.

According to a fourth aspect of the present invention, in addition to the structure of the third aspect, the shaft portion is provided on both sides of the latch member.
On the other hand, while the slits are formed one by one, the slit portion is formed in an arc shape that is continuous to one side with respect to the vertical guide portion and the vertical guide portion that guides the shaft portions in the vertical direction,
An upper arc guide portion that guides an upper shaft portion arranged at the top of the three shaft portions when the latch member rotates,
It is formed in an arc shape continuously on the other side with respect to the vertical guide portion, and when the latch member is rotated, the lower shaft portion arranged at the bottom of the three shaft portions is It has a lower arc guide portion for guiding.

According to a fifth aspect of the present invention, in addition to the structure of the third aspect, the shaft portion has an elongated cross section, while the slit portion makes the shaft portion non-rotatable. It is characterized in that it has an up-down direction guiding part for guiding in the up-down direction, and a rotatable part formed continuously at an upper end part of the up-down direction guiding part and capable of rotating the shaft part.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

[First Embodiment of the Invention] FIGS. 1 to 8 show a first embodiment of the present invention.

First, the structure will be described.
The IC socket 11 is an “electrical component socket”, and the IC socket 11 is used to perform a performance test of the IC package 12 which is an “electrical component”.
The second terminal is electrically connected to a circuit board (not shown) of a measuring instrument (tester).

As the IC package 12, there is, for example, a so-called BGA (Ball Grid Array) type, which has a large number of substantially spherical terminals on the lower surface of a rectangular package body 12a and a package body 12a.
It projects from the lower surface and is arranged in a matrix.

On the other hand, the IC socket 11 is shown in FIGS.
As shown in FIG. 3, a socket body 13 mounted on the circuit board and containing the IC package 12 is provided. The socket body 13 is provided with contact pins (not shown) that are connected to and separated from the terminals. A latch member 14 for pressing the IC package 12 is rotatably provided, and an operation member 15 for elastically deforming the contact pin and rotating the latch member 14 is provided on the socket body 11 so as to be vertically movable. There is.

The latch member 14 is the IC package 1.
A posture that is rotatably provided between a pressing position for pressing 2 (see FIG. 1) and a retracted position retracted from this pressed position (see FIG. 2), and further rotated to the retracted position shown in FIG. Is configured to be moved downward as shown in FIG. In FIG. 1, the latch member 14 is shown only on one side, but it is also provided on the opposite side. Of course, they can be arranged corresponding to the four sides of the IC package 12 if necessary.

Specifically, the latch member 14 is shown in FIG.
As shown in FIG. 3, the pair of left and right side plates 14a are provided, and the upper end portions of the both side plates 14a are connected by the claw-shaped pressing portion 14b, and the lower end portions are connected by the pressed portion 14c. A fitting protrusion 14d is provided on the lower surface of the pressed portion 14c.

Further, 3 are provided on the sides of the side plates 14a.
Upper shaft portion 14e, intermediate shaft portion 14f, lower shaft portion 14
g, a total of 3 pairs are formed so as to project.
As shown in FIG. 7, the e, the intermediate shaft portion 14f, and the lower shaft portion 14g have different protrusion amounts and are sequentially longer from the upper shaft portion 14e. These shaft portions 14e, 14f, 14g are arranged in a substantially straight line.

The shaft portions 14e, 14f, 14
A slit portion 13a into which the g is inserted and guided is formed in the socket body 13, and the shaft portion 1 is formed in the slit portion 13a.
By being guided by 4e, 14f, and 14g, the latch member 14 is provided so as to be rotatable and vertically movable.

More specifically, the slit portion 13a includes a vertical guide portion 13b for guiding the shaft portions 14e, 14f, 14g in the vertical direction and one side (in FIG. 4) with respect to the vertical guide portion 13b. (Upper left side), an upper arc guide portion 13c continuously formed in an arc shape, and a vertical guide portion 13b thereof.
On the other hand, it has a lower arc guide portion 13d continuously formed in an arc shape on the other side (right side in FIG. 4).

When the latch member 14 rotates, the upper shaft portion 14e is positioned and guided in the upper arc guide portion 13c, and the lower shaft portion 14g is positioned and guided in the lower arc guide portion 13d. It is configured to be.

Further, in the vertical guide portion 13b,
An upper step portion 13e and a lower step portion 13f are formed, and a portion below the lower step portion 13f (lower arc guide portion 1).
3d) is formed deepest and the lower shaft portion 14g is inserted and guided, and the lower step portion 13f and the upper step portion 13 thereof are formed.
The intermediate shaft part 14f is inserted and guided between the upper shaft part e and the intermediate shaft part 14f, and the part above the upper step part 13e (including the upper arc guide part 13c) is formed as the shallowest part. 14e is configured to be inserted and guided.

Further, the fitting projection 14d of the latch member 14
As shown in FIG. 1, a coil spring 17 as “biasing means” is fitted in the coil spring 17.
Is interposed between the latch member 14 and the socket body 13, so that the latch member 14 is urged so as to be rotated from the retracted position to the pressed position in the raised position.

On the other hand, the operating member 15 has a rectangular frame shape, and the IC package 12 is inserted through the opening 15a.
It is detachable, and is arranged in the socket body 13 so as to be vertically movable and is urged upward by a spring (not shown). Of course, a stopper is provided so that the stopper is stopped at a predetermined raised position.

Further, the operation member 15 is formed with a lower end corner portion 15b and a pressing projection 15c for pressing the pressed portion 14c of the latch member 14 downward by being lowered. By pressing the depression 14h of the pressed portion 14c at the lower end corner portion 15b, the latch member 14 is shown in FIG. 1 against the biasing force of the coil spring 17 around the intermediate shaft portion 14f. After being rotated from the pressing position to the retracted position shown in FIG. 2, by the pressing protrusion 15c,
The upper end of the pressed portion 14c is pressed and further lowered in this posture so that the entire latch member 14 is lowered.

Although not described in detail, in this IC socket 11, when the operating member 15 is lowered, the contact pin is elastically deformed through a mechanism (not shown), and I
The contact pins are separated from the terminals of the C package 12, and the contact pins are brought into contact with the terminals of the IC package 12 by raising the operating member 15.

Next, the operation will be described.

FIG. 1 shows a state in which the IC package 12 is accommodated in the IC socket 11 and the IC package 12 is held by the latch member 14. From this state, I
To take out the C package 12, the operating member 15 is lowered against the biasing force.

Then, the lower end corner portion 15 of the operating member 15
By b, the recessed portion 1 of the pressed portion 14c of the latch member 14
4h is pressed. This pressing position is a position offset to the outside of the socket with respect to the intermediate shaft portion 14f, which is the rotation center of the latch member 14, so that the latch member 14 is centered on the intermediate shaft portion 14f from the pressing position shown in FIG. The coil spring 17 is rotated to the retracted position shown in FIG. 2 against the biasing force of the coil spring 17.

At this time, the upper shaft portion 1 of the latch member 14
4e and the lower shaft portion 14g are guided by the upper arc guide portion 13c and the lower arc guide portion 13d of the slit portion 13a and the circumference around the intermediate shaft portion 14f is shown in FIG. Move to the state shown in. Now each shaft 14
The e, 14f, and 14g are aligned on the vertical guide portion 13b of the slit portion 13a.

When the operating member 15 is further lowered from this state, the pressing projection 15c of the operating member 15 presses the upper end of the pressed portion 14c of the latch member 14, and the latch member 14 rotates to the retracted position. In this posture, the coil spring 17 is lowered against the biasing force of the coil spring 17.

At this time, the contact portions of the contact pins are separated from the terminals of the IC package 12 to the maximum extent,
The IC package 12 can be taken out.

In this way, by lowering the latch member 14 from the retracted position (posture along substantially the vertical direction), even if the operating member 15 is lowered to the maximum extent, the latch member 14 does not jump upward. It is possible to dispose the latch member 14 in the IC socket 11 having a height restriction. Moreover, since the latch member 14 is configured to be lowered in a posture substantially along the vertical direction, it can be effectively arranged even when there is a space limitation in the socket width direction.

On the other hand, when the pressing force applied to the operating member 15 is released from that state, the operating member 15 is lifted by the urging force, and the pressing force applied to the latch member 14 is released.

The latch member 14 includes a coil spring 17
6 from the state shown in FIG. 6 to the state shown in FIG. 5, the upper shaft portion 14e comes into contact with the upper wall of the upper arc-shaped guide portion 13c, and the intermediate shaft portion 14f comes into contact with the upper step portion 13e. The lower shaft portion 14g comes into contact with the lower step portion 13f and the ascending is stopped.

Since the coil spring 17 biases the position offset with respect to the intermediate shaft portion 14f, which is the center of rotation, not in the vertical direction but in the diagonal direction, the latch member 14
Is rotated counterclockwise from the state shown in FIG. 5 around the intermediate shaft portion 14f. At this time, the position of the intermediate shaft portion 14f does not change, and the upper shaft portion 14e and the lower shaft portion 14g are guided by the upper arc guide portion 13c and the lower arc guide portion 13d to move to the position shown in FIG. .

As a result, the peripheral edge of the IC package 12 is pressed by the pressing portion 14b at the tip of the latch member 14.

[Second Embodiment of the Invention] FIGS. 9 and 10 show a second embodiment of the present invention.

In the second embodiment, the shapes of the shaft portion 14i of the latch member 14 and the slit portion 13g of the socket body 13 are different from those of the first embodiment.

That is, the shaft portion 14i is formed at a position corresponding to the intermediate shaft portion 14f of the first embodiment, and the flat surface portions 14j are formed on both sides thereof to have an elongated cross section.

Further, the slit portion 13g has a shaft portion 14
It has an up-down direction guide portion 13h that guides i in a non-rotatable state in the up-down direction, and a rotatable portion 13i that is formed continuously at the upper end of the up-down direction guide portion 13h and that allows the shaft portion 14i to rotate. ing. That is, the vertical guiding portion 13
As shown in FIG. 10, h is formed such that the width H1 is substantially the same as the width H2 between the flat surface portions 14j of the shaft portion 14i.
As shown in (c) of FIG. 10, with the shaft portion 14i inserted in the vertical guide portion 13h, the vertical movement is possible but the rotation is impossible.

In such a case, the latch member 1
As shown in (a) and (b) of FIG. 10, when the shaft portion 14i of No. 4 is positioned inside the rotatable portion 13i of the slit portion 13g, the latch member 14 rotates about the shaft portion 14i. It is movable. The position of the latch member 14 in (a) of FIG. 10 corresponds to that of FIG. 4 of the first embodiment.
The position of the latch member 14 in 0 (b) corresponds to FIG. 5 of the first embodiment.

That is, when the operating member 15 is lowered from the state where the latch member 14 is in the pressing position, the first embodiment
In the same manner as described above, the operating member 15 is pushed to rotate from the fixed position shown in FIG. 10A to the retracted position shown in FIG. 10B.

When the operating member 15 is further lowered, the entire latch member 14 is lowered, and the shaft portion 14i is vertically guided from the state shown in FIG. 10 (b) to the state shown in FIG. 10 (c). It descends in the portion 13h.

In this way, it is sufficient that the shaft portions 14i have a pair of left and right shaft portions, and the slit portion 13g has a simpler structure than that of the first embodiment.

The other structure and operation are similar to those of the first embodiment.

Although the present invention has been applied to the IC socket 11 as the "electrical component socket" in the above-described embodiments and the like, the present invention is not limited to this and can be applied to other devices. Further, the present invention is not limited to the type of IC package as long as the IC package can be held by the latch member.

[0049]

As described above, according to the first aspect of the invention, the latch member at the pressing position is pressed to rotate to the retracted position against the biasing force of the biasing means. Since it is configured to be further lowered after that, even if the operating member is lowered to the maximum extent, the latch member does not pop out upward, and the latch member can be arranged in the socket for electric parts having a height restriction. It will be possible.

According to the second aspect of the invention, since the latch member is configured to be lowered in a posture substantially along the vertical direction, it is effective even when there is a space restriction in the socket width direction. Can be placed in

According to the third aspect of the invention, by providing the shaft portion and the latch member having a simple structure, the latch member can be freely rotated and vertically moved.

According to the invention described in claim 4, the shaft portion comprises:
Three slits are formed on both sides of the latch member, and the slit portion includes a vertical guide portion that vertically guides each shaft portion,
An upper side which is formed in an arc shape continuously on one side with respect to the vertical direction guiding section and guides an upper side shaft section arranged at the top of the three shaft sections when the latch member is rotated. An arc guide portion and a lower shaft which is continuously formed in an arc shape on the other side of the vertical guide portion and which is arranged at the bottom of the three shaft portions when the latch member rotates. Since the lower circular arc guide portion that guides the portion is provided, it is possible to reliably perform the pivotal movement and the vertical movement movement of the latch member.

According to the invention of claim 5, the shaft portion is
While the cross section is formed in an elongated shape, the slit part is formed continuously with the vertical guide part that guides the shaft part in the vertical direction with the shaft part in a non-rotatable state and the upper end part of the vertical guide part, and rotates the shaft part. Since it has the rotatable portion that enables it, the shaft portion and the slit portion can have a simple structure.

[Brief description of drawings]

FIG. 1 is a half sectional view of an IC socket according to a first embodiment of the present invention, showing a state in which an IC package is held by a latch member.

FIG. 2 is a sectional view corresponding to FIG. 1, showing a state in which a latch member of the IC socket according to the first embodiment is rotated to a retracted position.

FIG. 3 is a cross-sectional view corresponding to FIG. 1, showing a state in which a latch member of the IC socket according to the first embodiment is lowered.

FIG. 4 is a diagram showing a relationship between the latch member and the slit portion in a state where the latch member of the IC socket according to the first embodiment is in the pressing position, and FIG. 4 (a) shows the slit portion and each shaft portion. FIG. 1B is a side view of the latch member.

FIG. 5 is a view showing the relationship between the latch member and the slit portion when the latch member of the IC socket according to the first embodiment is in the retracted position, and (a) shows the slit portion and each shaft portion. FIG. 1B is a side view of the latch member.

FIG. 6 is a view showing the relationship between the latch member and the slit portion when the latch member of the IC socket according to the first embodiment is in the lowered position, and FIG. 6A shows the slit portion and each shaft portion. FIG. 1B is a side view of the latch member.

FIG. 7 is a rear view of the latch member of the IC socket according to the first embodiment.

FIG. 8 is a sectional view taken along line AA of FIG. 4 according to the first embodiment.

FIG. 9 is a rear view of the latch member of the IC socket according to the second embodiment of the present invention.

10A and 10B are views showing a shaft portion and a slit portion of the latch member of the IC socket according to the second embodiment, wherein FIG. 10A is a state in which the latch member is in a pressing position, and FIG. 10B is a retracted position in the latch member. (C) shows the state in which the latch member is in the lowered position.

[Explanation of symbols]

11 IC socket (socket for electric parts) 12 IC package (electrical parts) 13 Socket body 13a, 13g slit part 13b, 13h Vertical direction guide 13c Upper arc guide 13d Lower arc guide 13i rotatable part 14 Latch member 14b Pressing part 14c Pressed part 14e Upper shaft 14f Intermediate shaft 14g Lower shaft 14i shaft 14j Flat section 15 Control members 15b Bottom corner 15c Pressing protrusion 17 Coil spring (biasing means)

Claims (5)

[Claims] 1. A socket main body for accommodating an electric component, wherein a latch member for pressing said electric component is rotatably provided on said socket main body, and an operation member for rotating said latch member is vertically movable. In the socket for electric parts provided in, the latch member is rotatably provided between a pressing position for pressing the electric part and a retracted position retracted from the pressed position, and can be lowered from the retracted position. Is provided in
An urging means for urging the latch member from the retracted position to the pressed position to urge it to the raised position is provided, and by lowering the operation member, the latch member at the pressed position is pressed and A socket for electric parts, characterized in that after being rotated to a retracted position against the biasing force of a biasing means, it is further lowered. 2. The electrical component according to claim 1, wherein the latch member is configured to be lowered in the posture along a substantially vertical direction while being rotated to the retracted position. For socket. 3. The latch member is formed with a shaft portion projecting laterally, a slit portion into which the shaft portion is inserted is formed in the socket body, and the shaft portion is guided to the slit portion. The socket for electric parts according to claim 1 or 2, wherein the latch member is provided so as to be rotatable and vertically movable. 4. The shaft portion is provided on both sides of the latch member.
While being formed one by one, the slit portion is formed in an arc shape that is continuous in one vertical direction with respect to the vertical guide portion and a vertical guide portion that guides the shaft portions in the vertical direction, When the latch member is rotated, an upper arc guide portion that guides the upper shaft portion that is arranged at the top of the three shaft portions, and an upper arc guide portion that continues to the other side of the vertical guide portion. And a lower arc guide portion that guides a lower shaft portion arranged at the bottom of the three shaft portions when the latch member is rotated. The socket for electric parts according to claim 3. 5. The shaft portion has an elongated cross section, while the slit portion vertically guides the shaft portion in a non-rotatable state, and a vertical guide portion. The socket for electrical parts according to claim 3, further comprising a rotatable portion that is formed continuously on an upper end portion and that allows the shaft portion to rotate.