JP2003346999A - Connector for integrated circuit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector capable of making the height low on a circuit board for an integrated circuit when the integrated circuit is mounted. <P>SOLUTION: This connector 1 is a CPU socket for detachably holding a CPU 2 on a circuit board 3, and comprises a case 4, a frame member 5 mounted on the case 4 slidably in the front and back direction, and a lever 6 sliding the frame member 5 forward and backward. The case 4 is equipped with through holes 8 penetrating from the front to the back faces. The frame member 5 has an accommodation opening 13 fitted with a terminal part 2b of the CPU 2. When the CPU 2 is mounted with the connector 1, the lever 6 is raised and the frame member 5 is moved backward. In such a condition, when the CPU 2 is mounted to the connector 1, the terminal part 2b is accommodated in the accommodation opening 13, and the terminal part 2b is built directly in the case 4. Because the connector 1 does not have a slide cover between the CPU 2 and the case 4 unlike a conventional connector, the height from the circuit board 3 to the circuit part 2a can be restrained low. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector for detachably mounting an integrated circuit on a circuit board.

[0002]

2. Description of the Related Art First, a conventional connector 51 is shown in FIG. CP having circuit portion 2a, terminal portion 2b, and pin 2c
As shown in FIG. 11, a connector 51 for detachably mounting an integrated circuit such as U2 on a circuit board includes an inner case 52 fixed to the circuit board 3 and an outer case slidably provided on the inner case 52. A case having a case 53 and a crank lever 54 for sliding the outer case 53 in the front-rear direction with respect to the inner case 52 is often used. Such a connector 51 has a through hole 55 into which the pin 2c is inserted into the outer case 53 and the inner case 52, and the through hole 55 of the inner case 52 has a terminal (not shown) connected to the pin 2c. Is installed.

In such a conventional connector 51, a CPU 2 is mounted on the surface of an outer case 53 with a crank lever 54 standing upright, and a pin 2c of the CPU 2 is inserted into a through hole 55.
Insert Then, the crank lever 54 is tilted forward to slide the outer case 53 forward, thereby connecting the pin 2c of the CPU 2 to a terminal (not shown).

On the other hand, in recent years, for example, with the spread of mobile computers and the like, when the CPU 2 is mounted on the circuit board 3, it is required to further lower the height of the CPU 2 mounted on the connector 51 from the circuit board 3. Have been.

[0005]

SUMMARY OF THE INVENTION The present invention aims to improve a connector for an integrated circuit, and more particularly, to reduce the height of a connector including an integrated circuit from a circuit board when the integrated circuit is mounted. It is an object of the present invention to provide an integrated circuit connector capable of performing the above.

[0006]

In order to achieve the above object, an integrated circuit connector according to the present invention comprises a circuit portion, a plate-like terminal portion, and a plurality of pins projecting downward from the back surface of the terminal portion. And a connector for detachably mounting the integrated circuit on a circuit board, the connector having the following features. First, there is provided an insulating case fixed to the circuit board, and sliding means for sliding the integrated circuit on the case in the front-rear direction while the integrated circuit is placed on the case. Also,
The case has a through-hole in which a terminal connected to the pin is mounted, the terminal has a pair of contact portions projecting in the front-rear direction at an upper end portion, and the pair of contact portions has a pin-to-pin distance. And a contact position narrower than the diameter of the pin.

The sliding means includes an operating portion pivotally supported at the rear of the case so as to swing from a position raised from the case to a position tilted toward the case, and the sliding portion is operated by operating the operating portion. And a pressing portion for moving the integrated circuit by contacting a side edge of a terminal portion of the integrated circuit. Then, when the pin is inserted into the release position of the contact portion and the integrated circuit is placed on the case in a state where the operation portion is erected, the operation portion is depressed to cause the pressing portion to contact the terminal. Pressing a part moves the pin from the release position to the contact position.

The integrated circuit connector of the present invention mounts the integrated circuit on the circuit board by directly mounting the integrated circuit on the case fixed to the circuit board. There is no need to provide an external case that slides on the case. Therefore, according to the integrated circuit connector of the present invention, the height of the integrated circuit from the circuit board can be reduced.

Further, in the integrated circuit connector according to the present invention, when the integrated circuit is mounted on the case, the pressing portion is fitted with a side edge of the terminal portion, and the operating portion is raised. When the frame is slid toward the rear of the case, and when the operation unit is depressed, the frame is slid toward the front of the case, and the frame is in a state where the operation unit is erected. When the terminal portion is fitted, the pin is guided to the release position of the contact portion, and when the operating portion is depressed, the fitted terminal portion is pressed forward to make contact with the pin. You may make it move to a position.

A cover for covering the surface of the terminal portion of the integrated circuit mounted on the case, wherein the operating portion is pivotally supported at the rear of the case, and wherein the pressing portion is connected to the case from the inner surface of the cover; A projecting piece that projects toward the terminal, and when the cover is folded down while the integrated circuit is placed on the case, the projecting piece presses the rear end of the terminal portion to place the pin in the contact position. May be moved.

Alternatively, the pressing portion is a substantially plate-shaped pressing plate slidable on the case and disposed behind the terminal portion in a state where the integrated circuit is mounted on the case, When the operating portion is raised and the integrated circuit is placed on the case and the operating portion is tilted, the pressing plate presses the terminal portion to move the pin to the contact position. It may be.

Further, in the integrated circuit connector of the present invention, it is preferable that the through hole is provided with a guide portion for guiding the pin to substantially the center of the gap width between the pair of contact portions. When the pin is inserted into the through hole at the release position, the pin does not contact the contact portion of the terminal. On the other hand, when the pin is inserted at the connection position, the pin comes into contact with the contact portion. In this case, the pin is guided by the guide portion to a substantially central portion of the interval between the pair of contact portions. Thereby, since the contact portion is expanded left and right by the pin, buckling of the contact portion by the pin is prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a connector according to the present invention will be described with reference to FIGS. 1 is an explanatory view showing a connector according to a first embodiment of the present invention, FIG. 2 is a partially enlarged explanatory view showing a through hole of the connector in FIG. 1, and FIG. 4 is C
Explanatory sectional view of the connector in a state where the PU is mounted,
FIG. 5 is an explanatory view showing the connection state of the pins and terminals of the CPU, FIG. 6 is an explanatory view showing the connector of the second embodiment, FIG. 7 is an explanatory view showing the operation of the connector of the second embodiment, and FIG. FIG. 9 is an explanatory view showing a state in which the CPU is removed from the connector in the second embodiment, FIG. 9 is an explanatory view showing the connector of the third embodiment, and FIG. 10 is an explanatory view showing the operation of the connector of the third embodiment. .

First, a connector 1 according to a first embodiment will be described with reference to FIGS. As shown in FIG. 1, the connector 1 of the first embodiment is a CPU socket for detachably holding a CPU 2 having a circuit portion 2a, a terminal portion 2b, and pins 2c on a circuit board 3. The connector 1 includes a case 4 fixed to the circuit board 3, a frame 5 slidably mounted on the case 4 in the front-rear direction, and a frame 5.
And a lever 6 that slides back and forth.

The case 4 is formed of an insulator, and is shown in FIG.
As shown in the figure, a through hole 8 is provided to penetrate the front and back to mount the terminal 7. As shown in FIGS. 2 and 3, the through hole 8 is formed in a rectangular tube shape at a lower portion, and has a guide portion 9 protruding inward on an upper surface thereof. As shown in FIG. 2, the opening of the guide portion 9 has an elliptical shape that is long in the front and rear directions in plan view. The width of the opening of the guide portion 9 is formed to be slightly larger than the diameter of the pin 2c of the CPU 2.

Terminal 7 mounted in through hole 8 of case 4
As shown in FIGS. 2 and 3, a trunk 7 a fixed to the inner wall near the rear end of the through hole 8, a pair of contact portions 7 b protruding forward from above the trunk 7 a, And a solder mounting portion 7c which is provided below 7a and on which the solder 10 is mounted. As shown in FIG. 2, the contact portion 7b has a release position 11 having an interval larger than the diameter of the pin 2c of the CPU 2 and a connection position 12 having an interval smaller than the diameter of the pin 2c. . At the connection position 12, both side edges are formed so as to be spaced from the inner wall of the through hole 8. When the terminal 7 is mounted in the through hole 8, the release position 11 is located at the rear part of the through hole 8, and the connection position 12 is located at the front part of the through hole 8.

The frame 5 has a storage opening 13 for exposing the surface of the case 4 as shown in FIG. The storage opening 13 is formed to be slightly larger than the terminal portion 2b of the CPU 2 with substantially the same size. When the CPU 2 is mounted on the surface of the case 4, the terminal portion 2b is fitted and the CPU 2 is positioned at a predetermined position. It is for guiding. Further, as shown in FIG. 4, the height of the frame 5 is substantially the same as the height of the circuit portion 2a when the CPU 2 is mounted on the case 4, and is formed to be slightly lower.

A rear portion of the frame 5 is provided with a crankshaft 6.
The eccentric portion of a is in contact with the frame 5 so that the frame 5 slides on the case 4 according to the rotation of the crankshaft 6a. Specifically, when the lever 6 is raised as shown in FIG. 1, the frame 5 is moved to the rear of the case 4 by the eccentric portion of the crankshaft, and when the lever 6 is rotated forward, the crankshaft 6a is rotated. The frame 5 is moved forward of the case 4 by the eccentric portion. Also, C is provided on both sides of the frame 5.
A notch 14 that exposes the terminal 2b is provided so that the terminal 2b can be gripped when the PU 2 is removed.

Next, a case where the CPU 2 is mounted on the circuit board 3 by the connector 1 of the first embodiment will be described. In the connector 1 according to the present embodiment, the lever 6 is raised and the frame 5 is
By fitting U2 into the storage opening 13 of the frame 5, C2
The PU 2 is placed directly on the surface of the case 4. Then, the user depresses the lever 6 to move the frame 5 forward, and presses the CPU 2 by the inner wall of the storage opening 13 to move the CPU 2 forward.

In this embodiment, the frame 5 is the case 4
When the CPU 2 is fitted into the storage opening 13 in a state in which the CPU 2 is located behind, the pin 2c of the CPU 2 is inserted into the release position 11 of the terminal 7, as shown in FIG. 5A. . When the frame 5 is moved forward of the case 4, the pin 2c is also moved forward, and the pin 2c is moved to the connection position 12 of the terminal 7, as shown in FIG. At the connection position 12, since the interval between the contact portions 7b of the terminal 7 is smaller than the diameter of the pin 2c, the contact portion 7b and the pin 2c are connected.

Next, when removing the CPU 2 from the connector 1, the lever 6 is raised and the frame 5 is moved to the rear of the case 4. As a result, the terminal portion 2 b of the CPU 2 is pressed and moved to the rear of the case 4 by the inner wall of the storage opening 13. Further, the pin 2c is moved from the connection position 12 of the terminal 7 to the release position 11. In this state, the pin 2c
Is not in contact with the terminal 7 and has no contact resistance, so that the user can easily remove the CPU 2 from the connector 1. Further, since the cutout 14 is provided in the frame 5, the user can easily grip the side wall of the terminal 2b.

As described above, the connector 1 according to the first embodiment
According to this, since the CPU 2 is mounted directly on the surface of the case 4, the height from the circuit board 3 to the circuit section 2a can be reduced. Further, as shown in FIG. 4, since the height of the connector 1 including the frame 5 is substantially the same as the height of the circuit portion 2a, it is possible to keep the height of the connector 1 including the CPU 2 low. it can.

In the first embodiment, when the lever 6 is tilted toward the case 4 and the user mistakenly
If U2 is to be attached to connector 1, terminal 2
b is guided to the storage opening 13, and the pin 2 c is guided to the connection position 12 of the terminal 7. At this time, the guide portion 9 guides the pin 2c to approximately the center of the interval between the pair of contact portions 7c (see FIG. 5B). For this reason, the user mistakenly makes the CPU 2
Even if is attached, since the pin 2c does not press the surface of the contact portion 7c, the pin 2c does not buckle the contact portion 7b.

Next, a connector 21 according to a second embodiment will be described with reference to FIGS. The connector 21 according to the second embodiment includes a case 4 and a cover 22 that is rotatably supported on a rear portion of the case 4. In this embodiment, the case 4 has a cover 22 at the rear portion.
Is provided, and has a bottomed concave portion 24 opened upward in the front portion. In the present embodiment, these configurations of the case 4 correspond to the first configuration.
However, the configurations of the through-holes and the guide portions are the same. Also, the terminals have the same configuration as in the first embodiment.

The cover 22 is formed of an insulator,
A central opening 25 for exposing the circuit portion of U2 is provided. A projecting piece 26 that protrudes toward the case 4 is provided as a sliding means on the inner surface of the cover 22. The protruding piece 26 has flexibility, and when it is pressed in the thickness direction, it is bent, but when it is released, FIG.
7a. The surface of the cover 22 is plated with a conductive material and grounded by a ground circuit (not shown).
It is formed so as to shield the electromagnetic wave generated from b.

The connector 21 according to the second embodiment uses the CP
When the U2 is mounted on the circuit board 3, as shown in FIG. 7A, the cover 22 is erected, and the CPU 2 is mounted on the surface of the case 4 such that the pins 2c are inserted into the release positions 11 of the terminals 7 (FIG. 7A). 5a). When the cover 22 is rotated forward from this state, as shown in FIG. 7B, the distal end of the protruding piece 26 comes into contact with the rear edge of the terminal 2b of the CPU 2. When the cover 22 is further tilted forward, the protruding piece 26 is bent and presses the terminal portion 2b forward. As a result, the pin 2c moves from the release position 11 of the terminal 7 to the connection position 12
And the contact portion 7b and the pin 2c are connected (see FIG. 5B).

When the CPU 2 is detached from the connector 1, the cover 22 is raised to expose the CPU 2 to the outside. Next, as shown in FIG. 8, a minus driver 27 or the like is inserted into a concave portion 24 provided in the front of the case 4, and the CPU 2 is slid rearward with respect to the case 4 by rotating toward the rear. Thereby, the pin 2c
Is moved from the connection position 12 of the terminal 7 to the release position 11, so that the CPU 2 can be easily removed from the connector 1.

As described above, in the second embodiment,
Since the periphery of the terminal portion 2b of the CPU 2 is covered with a conductive plating on the surface and is covered with the grounded cover 22, the electromagnetic wave radiated from the terminal portion 2b can be prevented from leaking outside. Even when such a cover 22 is provided, since the cover 22 is formed at substantially the same height as the circuit portion 2a of the CPU 2, the CPU 2
Can be kept low.

Next, a connector 31 according to a third embodiment of the present invention will be described with reference to FIGS.
The connector 31 of the third embodiment includes a case 4 in which a terminal is mounted in a through hole, as in the first embodiment.
The rear part of the case 4 includes a pressing member 32 slidable on the case 4 and a short lever 33 pivotally supported by the rear part of the case 4 to slide the pressing member 32. .

The case 4 has a short lever 3
3 are provided at three locations, and the shaft support 34 has a bottomed groove 35 for supporting a rotation shaft 42 of a short lever 33 described later. I have. A pressing member 32 to be described later is provided on a rear side wall of the case 4.
The slide protrusion 36 is slidably engaged with the slide groove 40 provided in the side plate 39 of the first embodiment. In addition, the configurations of the through hole and the guide portion are the same as those of the case 4 in the first embodiment. Also, the terminals have the same configuration as in the first embodiment. Further, similarly to the second embodiment, the front portion is provided with a concave portion 24 having a bottom and opened upward.

The pressing member 32 is attached to the rear part of the case 4 as shown in FIGS. 9 and 10, and extends from two positions behind the pressing plate 37 for pressing the terminal portion 2b of the CPU 2. And an engaging portion 38 to be provided. The pressing member 32 includes side plates 39 extending downward from the left and right side edges of the pressing plate 37. The side plate 39 has a slide groove 40 slidably engaged with the slide protrusion 36 provided on the side wall of the case 4. Further, the engaging portion 38 includes an engaging groove 41 which is engaged with an eccentric shaft 43 of the short lever 33 described later.

As shown in FIG. 9, the short lever 33 has an operation part 33a for the user to perform a rotation operation, and a support part 33b extending from four places behind the operation part 33a. . The support portion 33b is provided on the shaft support groove 35 of the case 4.
A rotary shaft 42 supported by the pressing member 32 and an engagement groove 41 of the pressing member 32
And an eccentric shaft 43 engaged with the eccentric shaft.

The connector 31 according to the third embodiment is assembled as follows. First, the shaft support groove 35 of the case 4
Then, the rotating shaft 42 of the short lever 33 is inserted. Then, the engaging groove 41 of the pressing member 32 is engaged with the eccentric shaft 43 of the short lever 33, and the pressing plate 37 is mounted on the surface of the case 4 so that the sliding groove 40 is engaged with the sliding protrusion 36. I do. Thereby, the pressing member 32 is slidably mounted on the case 4 with the sliding groove 40 being engaged with the sliding protrusion 36 of the case 4.

According to the connector 31 of the third embodiment, the CP
When the U2 is mounted on the circuit board 3, as shown in FIG. 10A, the operating portion 33a of the short lever 33 is raised,
The pressing member 32 is moved to the rear of the case 4. In this state, the CPU 2 is placed on the case 4 so that the pins 2c are inserted into the release positions 11 of the terminals 7 (see FIG. 5A).
Next, when the operating portion 33a of the short lever 33 is rotated forward, the leading edge of the pressing plate 37 contacts the rear edge of the terminal portion 2b of the CPU 2 as shown in FIG. 10B. When the operation unit 33a is further tilted forward from this state, the pressing member 32 is further pushed forward as shown in FIG.
Presses the terminal portion 2b, whereby the CPU 2 moves forward. As a result, the pin 2c moves to the release position 1 of the terminal 7.
1 to the connection position 12, the contact portion 7b and the pin 2
c is connected (see FIG. 5b).

When detaching the CPU 2 from the connector 31, the operating portion 33a of the short lever 33 is erected, and the pressing member 32 is moved backward. Next, Case 4
Insert a flathead screwdriver or the like into a concave portion 24 provided in front of the
Is slid backward with respect to the case 4 (see FIG. 8). As a result, since the pin 2c is moved from the connection position 12 of the terminal 7 to the release position 11, there is no contact resistance between the pin 2c and the contact portion 7b.
Can be removed from.

In the connector 31 of the third embodiment, the pressing member 32 is connected to the case 4 and the terminal 2 b of the CPU 2.
Since the CPU 2 is directly mounted on the surface of the case 4 without intervening between the two, the height of the connector 31 including the CPU 2 can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a connector according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged explanatory view showing a through hole of the connector of FIG. 1;

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an explanatory sectional view of the connector in a state where the CPU is mounted.

FIG. 5 is an explanatory diagram showing a connection state between pins and terminals of a CPU.

FIG. 6 is an explanatory view showing a connector according to a second embodiment.

FIG. 7 is an explanatory view showing the operation of the connector according to the second embodiment.

FIG. 8 is an explanatory diagram showing a state in which a CPU is removed from a connector in the second embodiment.

FIG. 9 is an explanatory view showing a connector according to a third embodiment.

FIG. 10 is an explanatory diagram showing the operation of the connector according to the third embodiment.

FIG. 11 is an explanatory view showing a conventional connector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Connector, 2 ... Integrated circuit, 2a ... Circuit part, 2b ... Terminal part, 2c ... Pin, 3 ... Circuit board, 4 ... Case, 5 ... Frame (pressing part), 6 ... Lever (operation part), 7 ... Terminal, 7b
... contact portion, 8 ... through-hole, 11 ... release position, 12 ... connection position.

Claims (5)

[Claims] 1. A connector for detachably mounting an integrated circuit having a circuit portion, a plate-shaped terminal portion, and a plurality of pins projecting downward from a back surface of the terminal portion on a circuit board, the connector comprising: An insulating case to be fixed, and sliding means for sliding the integrated circuit in the front-rear direction on the case with the integrated circuit placed on the case, wherein the case is connected to the pins. The terminal has a pair of contact portions protruding in the front-rear direction at an upper end portion, and the pair of contact portions is located at a release position where the distance between the two is wider than the diameter of the pin. And a contact position narrower than the diameter of the pin, wherein the sliding means is pivotally supported at the rear of the case so as to swing from a position raised from the case to a position tilted toward the case. Section and the collection section by operating the operation section. A pressing portion that abuts a side edge of a terminal portion of a circuit to move the integrated circuit, wherein the pin is inserted into a release position of the contact portion in a state where the operation portion is upright, and the integrated circuit is The integrated circuit connector according to claim 1, wherein when placed on the case, the operation portion is depressed to cause the pressing portion to press the terminal portion to move the pin from the release position to the contact position. 2. The pressing portion according to claim 1, wherein a side edge of the terminal portion is fitted when the integrated circuit is mounted on the case, and the pressing portion faces rearward of the case when the operating portion is erected. The frame is slid and slides toward the front of the case when the operation unit is tilted, and the terminal is fitted with the frame in a state where the operation unit is erected. Guiding the pin to the release position of the contact portion, pressing the terminal portion fitted when the operation portion is depressed, and moving the pin to the contact position. The connector for an integrated circuit according to claim 1. 3. The operation unit is a cover which is pivotally supported behind the case and covers a surface of a terminal portion of the integrated circuit mounted on the case, and wherein the pressing unit is connected to the case from an inner surface of the cover. A projecting piece projecting toward the terminal, wherein the projecting piece presses the rear end of the terminal portion to contact the pin when the cover is folded down while the integrated circuit is placed on the case. The integrated circuit connector according to claim 1, wherein the connector is moved to a position. 4. The pressing portion is a substantially plate-shaped pressing plate which is slidable on the case and which is disposed behind the terminal portion in a state where the integrated circuit is mounted on the case. When the operation unit is raised from the state where the operation unit is erected and the integrated circuit is placed on the case, the pressing plate presses the terminal unit to move the pin to the contact position. The integrated circuit connector according to claim 1, wherein: 5. The device according to claim 1, wherein the through-hole has a guide portion for guiding the pin to substantially the center of the gap width between the pair of contact portions. Connectors for integrated circuits.