JP2719766B2 - IC socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC socket, and more particularly to an IC socket in which an IC carrier holding and fixing a flat type IC package is mounted so that leads and contact pins of the IC package can be connected. .

[0002]

2. Description of the Related Art In the so-called open-top type IC socket, when an IC carrier in which an IC package is sandwiched and fixed is mounted, the IC carrier is inserted from above the socket body. FIG. 7 shows a conventional link mechanism for a carrier retainer for locking the IC carrier housed in this type of IC socket. In the figure, reference numeral 1 denotes an IC carrier holding and fixing an IC package, 7 denotes a rotating plate, 8 denotes a support shaft implanted in a socket body, 9 denotes a driving pin, 10 denotes a carrier holding fixture, 11 denotes a connection pin, and 12 denotes a carrier pin. Is a guide pin. FIG. 8 is a trajectory diagram of the operation of the carrier holding member 10.

[0003] The drive pin 9 is fixed to the outer frame 4 of the IC socket and is engaged with a long hole 7 a opened in the rotary plate 7. Therefore, when the outer frame 4 of the IC socket is pushed down, the drive pin 9 also moves down and moves in the direction of the arrow in FIG. 7, and the rotary plate 7 rotates counterclockwise about the support shaft 8 by the elongated hole 7 a. The guide pin 12 is fixed to the IC socket main body 2 and is engaged with a long hole 10 c opened in the carrier holding member 10. The connecting pin 11 connects the rotating plate 7 and the carrier holding member 10. However, the connecting pin 11 does not go to a position below the support shaft 8.

When the rotating plate 7 turns left around the support shaft 8, the connecting pin 11 also turns left. As shown in FIG. 7, when the connecting pin 11 turns left around the support shaft 8, the holding portion 10b of the carrier holding metal fitting 10 turns right and the IC
Since the IC carrier 1 is separated from the carrier 1, the IC carrier 1 can be separated. (Dashed line) When the IC carrier is mounted, the operation is reversed. However, since the IC carrier 1 is actually being pushed up from below by the elastic force of the spring portion 3b of the contact pin 3 as shown in FIG. 3 described later, the IC carrier 1 The pressing portion 10b rubs the upper portion. Therefore, the pressing portion 10b may be stuck on the upper part of the IC carrier during the movement and may not be able to move. Therefore, in such a case, the IC carrier cannot be fixed properly.

[0005]

When the above-described IC socket is used, it often occurs that the IC carrier cannot be fixed properly, so that the IC carrier may come off during the test process of the IC package. The present invention
An object of the present invention is to enable an IC carrier to be always fixed to an IC socket properly.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of connecting cores along at least both edges.
Ntakutopin the socket body planted is one which fits disposed vertically movably outer frame via the <br/> bullet machine means upward biasing
, Swingably attached to the body, one end connected to the outer frame
And the other end is locked by an IC carrier carrying an IC package.
A link mechanism consisting of a rotating plate connected to a holding member
In an IC socket disposed between the outer frame and the socket body, a guide pin is attached to the holding member and the socket body.
Either one of the engagement holes in the shape of a square
And at the same time, an engagement hole having a U-shape
The holding member is engaged with the V-shape of the engagement hole.
To the outside of both sides of the main unit along with the downward movement of the outer frame.
It is those that.

[0007]

Therefore, when the outer frame of the IC socket is pushed down, the carrier holding member moves outward. In this state, the IC carrier holding the IC package is placed at a predetermined position on the IC socket body. Here, when the pressing on the outer frame is stopped and the IC socket is returned, the driving pin moves upward,
The carrier retainer also pivots to its original position. On this occasion,
Since the hole formed in the carrier holding member has a U-shape, the carrier holding member moves inward once more than a predetermined pressing position. After that, it is moved back to the outside again and pressed from above. Therefore, the IC carrier can be reliably pressed without the pressing portion almost rubbing the upper portion of the IC carrier.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a front view of an IC socket as one embodiment according to the present invention. 2 is a plan view of the embodiment, FIG. 3 is a side sectional view of the embodiment, FIG. 4 is a partial side view of a link mechanism according to the present invention, and FIG. FIG. 6 is an enlarged view of an operation cam hole of the link mechanism of the present invention.

An embodiment of an IC socket according to the present invention will be described below with reference to FIGS. 1 to 6. In the drawing, reference numeral 1 denotes an IC carrier for resiliently holding and fixing, for example, a flat IC package by a locking claw, and 2 denotes an IC carrier 1.
A socket body adapted to accommodate the
The contact pins 3 are arranged in a large number on the socket body 2 so that the leads of the IC package in the accommodated IC carrier 1 (see the two-dot chain line in FIG. 3) come into contact with the contact portions 3a. Reference numeral 4 denotes an outer frame mounted on the socket body 2 so as to be vertically movable by a predetermined stroke. Here, the outer frame 4 is a pedestal 5 integrated with the socket body 2.
For example, four coil springs 6 (FIGS. 1 and 2)
).

Reference numeral 7 denotes a rotating plate pivotally attached to four side portions of the socket body 2 via a support shaft 8. Reference numeral 9 denotes an implanted in the outer frame 4 and fitted into a long hole 7a of the rotating plate 7. The rotating plate 7
The drive pin 10 for rotating the shaft around the support shaft 8 is formed in a gate shape, and one end of each of the arm portions 10a on both sides is pin-connected to the rotation plate 7 via the connection pin 11. As a result, a carrier holding member made of, for example, a sus material or the like is arranged such that the holding portion (the upper beam portion of the gate) 10b is laid on the socket body 2 (FIG. 2). It is planted and has a carrier retainer 10
When the outer frame 4 is in the upper position (FIG. 1), which is fitted in the long hole 10d of the V-shape, the holding portion 10b of the carrier holding member 10 is accommodated as shown in FIG. Guide pins for guiding the upper surface of the carrier 1 so as to be pressed. These members constitute a link mechanism.

Since the IC socket according to the present invention is configured as described above, first, when the IC carrier 1 is mounted, the outer frame 4 is pressed down against the elasticity of the coil spring 6.
Due to the downward movement of the drive pin 9, the rotating plate 7 is turned left around the support shaft 8 through the long hole 7a, whereby the arm 10a of the carrier holding member 10 moves upward through the connection pin 11, and At this time, it is guided by the guide pin 12.

Therefore, first, the outer frame of the IC socket is pressed down, and the holding portion 10b of the carrier holding member 10 is moved from the state of FIG. 1 to the outside of the IC socket main body 2, and the IC carrier 1 is moved to a predetermined position of the socket main body 2. Put in position. At this time,
The IC carrier 1 is pushed up by the elastic force of the spring portion 3b of the contact pin 3. Where IC
When the operation of pushing down the outer frame 4 of the socket is stopped, the outer frame 4 is returned to the original position by the elastic force of the spring 6. Then, the drive pin 9 moves upward, and the rotating plate 7 and the connecting pin 11 rotate clockwise. When the hole 10c formed in the carrier holding member 10 is a linear long hole, the operation trajectory of the pressing portion 10b follows the trajectory as shown by the broken line in FIG. 4, the same effect as when the guide pin 12 moves leftward and returns as shown in FIG. 5 is produced. Therefore, the operation locus of the pressing portion 10b follows a locus as shown by a solid line in FIG. The pressing portion 10b first moves largely toward the inside of the IC socket main body 2 and then moves downward while slightly returning to the outside. If the elastic force of the contact pin 3 is the same, the position at which the pressing portion 10b starts to contact the upper part of the IC carrier 1 is in the shape of a dogleg shape as compared with the case of a long hole.
It will be near the center of the IC carrier 1. Therefore, the distance that the pressing portion 10b rubs the upper portion of the IC carrier 1 is also reduced. Therefore, if the elastic force of the spring 6 and the contact pin 3 is the same, the hole 10c formed in the carrier retainer 10 is more securely fixed to the IC carrier without being damaged than the long hole without damaging the IC carrier. I can do it.

The smaller the angle of the U-shape, the angle α shown in FIG.
Is increased in the inward direction, and the amount returned again in the outward direction of the IC socket body 2 is correspondingly increased. The angle α of the square is determined by the width of the carrier holding member 10, the structure of the IC socket body 2, and the like.

As described above, since the opening / closing operation of the carrier holding member 10 with respect to the IC carrier 1 is performed via the link mechanism of the present invention, the IC carrier 1 can be operated simply by pressing down the outer frame 4. Can be easily and surely inserted and removed, making it possible to cope with an automatic machine, and the connection between the contact pins 3 and the lead pins of the IC package is properly performed. Note that the carrier in the link mechanism of the present invention is used.
A Relationship between the long hole 10d of the holding metal 10 and the guide pin 12
Is the opposite relationship, that is, the slot 10d is
Doping pin 12 is provided on the carrier holding bracket 10 side
May be.

[0015]

As described above, according to the present invention, the IC carrier is locked by operating the carrier retainer via the link mechanism only by the vertical movement of the outer frame, and the locking action is performed by the link mechanism. By making the hole engaging with the operation pin of U-shaped, the locking action of the carrier presser fitting is ensured, and the operation trajectory does not rub on the package, so that the package is not damaged, Etc.

[Brief description of the drawings]

FIG. 1 is a front view of an IC socket as one embodiment according to the present invention.

FIG. 2 is a plan view of the IC socket of the present invention.

FIG. 3 is a longitudinal sectional view of the IC socket of the present invention.

FIG. 4 is a partially enlarged view of a link mechanism of the IC socket of the present invention.

FIG. 5 is an explanatory view showing the operation of the link mechanism of the present invention.

FIG. 6 is an enlarged view of an operation cam hole of a carrier holding member of the link mechanism.

FIG. 7 is a partially enlarged view of a conventional link mechanism of an IC socket.

FIG. 8 is an explanatory view showing the operation of a conventional IC socket link mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 IC carrier 2 Socket main body 3 Contact pin 4 Outer frame 7 Rotating plate 8 Support shaft 9 Drive pin 10 Carrier holding fixture 11 Connecting pin 12 Guide pin

Claims (1)

(57) [Claims] 1. A plurality of connecting pins along at least both edges.
Ntakutopin the socket body planted is one which fits disposed vertically movably outer frame via the <br/> bullet machine means upward biasing
, Swingably attached to the body, one end connected to the outer frame
And the other end is locked by an IC carrier carrying an IC package.
A link mechanism consisting of a rotating plate connected to a holding member
In an IC socket disposed between the outer frame and the socket body, a guide pin is attached to the holding member and the socket body.
Either one of the engagement holes in the shape of a square
And at the same time, an engagement hole having a U-shape
The holding member is engaged with the V-shape of the engagement hole.
To the outside of both sides of the main unit along with the downward movement of the outer frame.
IC socket, characterized in that that.