JPH0637349Y2 - IC socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an IC socket.

(Prior Art and Problems Thereof) In general, the burn-in IC sockets shown in FIGS. 7 and 8 are often used.

In the IC socket of FIG. 7, the presser cover 2 is rotatably supported on one end side of the socket body 4, and the lock lever 3 for locking the presser cover 2 of the IC package 1 is attached to the socket body 4. Has been. The lock lever 3 is rotatable about a shaft 5, and
One end is urged to rotate inward by the urging force of the coil spring 6 hooked to the socket body 4 and the other end to the lock lever 3 to lock the presser cover 2. There is.

Therefore, although there is an advantage that the work of closing the lock lever 3 is automatically performed, in the work of taking out the IC package 1, it is necessary to hold the lock lever 3 in the open state and grasp the IC package 1.

If only the lock lever 3 is held open during the holding work of the lock lever 3, the shaft 5 serves as a fulcrum due to the biasing force of the coil spring 6, and the socket body 4 rotates inward. After all, there is a problem that it will be in a closed state.

To avoid this problem, for example, the lock lever 3 is urged outward with the thumb of the left hand, and the presser cover 2 is opened while the socket body 4 is urged outward with the little finger, and the IC package 1 is grasped with the right hand. I had to take it out.

In the IC socket shown in FIG. 8, the holding cover 8 is separated from the socket body 10, and the socket body 10 and the holding cover 8 are positioned by a plurality of guide projections 12. Also, IC
Lock levers 9 and 9 for locking the pressing cover 8 of the package 7 are pivotally supported on the left and right sides of the socket body 10 by a shaft 11, and are biased inward by a coil spring (not shown).
It has a structure for locking the presser cover 8.

Therefore, there is an advantage that the work of closing the lock lever 9 is automatically performed, but during the work of taking out and arranging the IC package 7, the left and right lock levers 9, 9 are manually operated against the biasing force of the coil spring. It must be held open.

Especially in the case of taking out work, after urging the left and right lock levers 9, 9 outward with equal force with the thumb and little finger of the left hand, lift the presser cover 8 vertically with the right hand to remove it from the guide protrusion 12, then The package 7 must be gripped and taken out, which poses a problem that the work is extremely difficult.

An object of the present invention is to solve the above-mentioned problems and provide an IC socket in which the work of attaching and detaching the IC package is easy.

(Means for Solving the Problems) In order to solve the above problems, the present invention has two support protrusions 22 and 23 (support shaft protrusions 22 ′ and 22 ′) for press-fitting a support shaft 25 formed laterally. Socket body 21 and this socket body
21. A holding cover for pushing down the IC package 1 arranged on the above 21, a lock lever 28 for turning on the supporting shaft 25 supported by the supporting protrusions to push down the holding cover, and the supporting shaft.
25, the one end 33a is on the socket body 21, and the other end 3 is
In the IC socket including 3b hooked on the lock levers 28 and a coil spring 33 that constantly urges the lock levers 28 toward the cover side, one side surface of the lock levers 28 supports the one side. A stopper 31 is provided so as to abut the projections 22 and 22 'so as to prevent rotation of the lock lever 28, and is locked along the support shaft 25 when the lock lever 28 rotates. By moving the lever 28 in the direction of the one of the support projections 22, 22 ', the stopper 31 causes the one of the support projections 22,
The lock lever 28 is moved to the tip position of 22 'so that the lock lever 28 can be temporarily fixed in the opened state.

The other support protrusion 23 projects outward from the one support protrusion 22, and a triangular lead slope 24 is formed on the inner surface of this projecting portion.

(Operation) As described above, since the stopper 31 of the lock lever 28 abuts on the tip end surface of the one support protrusion 22 and is temporarily fixed, the lock lever 28 does not engage with the presser cover even when being biased by the coil spring 33. Can be stored temporarily.

Further, while the side surface of the lock lever 28 shifts to the open state, it abuts on the lead slope 24 of the other support protrusion 23 and automatically shifts to the temporary fixing position, and thereafter the stopper 31 causes the side face of the one support protrusion 22. And are held in an open state.

(Embodiment) FIG. 1 is an exploded perspective view of a main part of an IC socket according to an example of the present invention, and FIGS. 2 and 3 are sectional views of different portions of the lock lever of FIG. One support protrusion 22 and the other support protrusion 23 project from the side surface of the socket body 21. The other support protrusion 23 protrudes outwardly longer than the one support protrusion 22, and a side surface on the side of the one support protrusion 22 is a lead slope 24 which is inclined inward. further,
Bearings 26, 26 for inserting the support shaft 25 are formed on the side surfaces of the support protrusions 22, 23.
Are drilled respectively. After the support shaft 25 is inserted, it is held at both ends by retaining members (E-rings) 27, 27.

On the other hand, the lock lever 28 has an inverted L-shape when viewed from the side, and both sides of the portion corresponding to the lower end of the inverted L-shape project into legs 29, 29, and the support shaft 25 is inserted therethrough. Hole
30 and 30 are bored, and a triangular stopper 31 is projectingly provided on the side surface of the leg portion 29 on one side.

Further, a pressing protrusion 32 projects like a jetty at a portion corresponding to the left end of the inverted L shape, and a lever knob 35 projects outward on the side surface of the intermediate bent portion.

The leg portions 29, 29 of the lock lever 28 described above are inserted between the support protrusions 22, 23, and the support shaft 25 is attached to the bearings 26, 26 and the insertion holes 30, 30.
Insert it so that it penetrates through. In this case, lock lever 28
The coil spring 33 is inserted between the legs 29, 29 so as to be penetrated by the support shaft 25. The coil spring 33 urges the lock lever 28 in the closing direction as shown in FIG. 3, one end of which is hooked on the socket body 21 and the other end of which is hooked on the locked portion 34 of the lock lever 28. It's stopped.

Next, the operation of the lock lever 28 is shown in FIG.
(A ') to FIG. 5 (e) and (e') will be described.
FIGS. 5 (a) to 5 (e) are plan views of essential parts showing the operating state of the lock lever 28, and FIGS. 5 (a ') to 5 (e') are respectively shown in FIG. ) -Figure 5 (e) is a side sectional view.

When the lever knob 35 is held in the closed state shown in FIGS. 5 (a) and 5 (b), the outer end face 32 of the lock lever 28 contacts the lead slope 24 when the lever 25 is pivoted outward about the support shaft 25. (See Fig. 5 (b) and (b ').

Further, when it is further rotated, the lock lever 28 moves rightward on the support shaft 25 by the sliding guide by the lead slope 24 of the outer end surface 32. At this time, the lock lever 28 is the stopper 31
Moves to a position on the same line as one of the support protrusions 22 (see FIGS. 5C and 5C).

Next, when the holding of the lever knob 35 is released, the lock lever is generated by the elastic force of the coil spring 33 (see FIG. 5C).
28 rotates in the closing direction, and the stopper 31 moves one support protrusion 22
(See FIGS. 5 (d) and (d ')), and the lock lever 28 is temporarily fixed. That is, the lock lever 28 stops in the opened state with respect to the socket body 21.
As a result, the pressing cover 2 can be opened and closed without coming into contact with the lock lever 28, and the attachment / detachment work of the IC package 1 is facilitated.

Next, the work of closing the lock lever 28 in the temporarily fixed state will be described. The lever knob 35 is held and rotated in the opening direction again, and the stopper 22 is moved to the left while releasing the contact of the projection 22, and brought into contact with the support projection 23 side. When the lock lever 28 is released from the rotation while being biased to the left with this contact as a trigger, the outer end surface 32 slides along the lead slope 24 via the restoring force of the coil spring 33, and the lock lever 28 moves to the left, that is, to a position where the stopper 31 does not abut the support protrusion 22 on the one side. afterwards,
When the holding of the lock lever 28 is released, the presser cover 2 is locked.

In addition, 1 in FIG. 5 (a) is a clearance between the tip of one of the support protrusions 22 and the start point of the lead slope 24, and when the lock lever 28 moves in the left-right direction, the stopper 31 supports one of the supports. It is provided in order to avoid contact with the protrusion 22.

FIG. 6 shows another embodiment in which the lead slope 24 is not provided.
Is a partial plan view of the lock lever 28 in a closed state, and (B) is a partial plan view of the open state (partial cross section). In the support protrusion 22 'of this embodiment, the other support protrusion 23 is the lead slope 24.
The same shape as the one of the support protrusions 22 having no
The other parts are the same as those in the above-mentioned embodiment, and the description thereof will be omitted.

The operation of the lock lever 28 will be described. When opening from the closed state of FIG. 6 (a), the lever knob 35 of the lock lever 28 is grasped and the lock lever 28 is opened to the open position. In this state, the lock lever 28 is manually pulled toward the right side support protrusion 22 'and then the hand is released. In this way, the stopper 31 of the lock lever 28 is moved to the support protrusion 22' by the urging force of the coil spring 33. The temporarily fixed state is maintained by contacting the side surface of the tip.

Next, when closing the lock lever 28,
The support protrusion on the left side manually after moving the
When the stopper 31 is pressed to the 22 'side and moved to a position where the stopper 31 does not contact the right support protrusion 22', the coil spring 33 closes in the closed direction.

(Effect of the Invention) As described above, the lock lever 28 can be held in the open state by contacting the stopper 31 with the support protrusions 22 and 22 '.

For this reason, it is possible to release the IC package from a series of work while holding the lock lever open by hand as in the past, and due to the simplification, it is possible to perform the IC package extraction and placement work quickly and accurately. Become.

As a result, the work of gripping and taking out the IC package can be concentrated only on that, and there is no risk of bending the lead terminals.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of an IC socket of the present invention having a lead slope, FIG. 2 and FIG. 3 are sectional views of the essential part of the lock lever in a mounted state, and FIG. 4 is an operation of a stopper. Explanatory diagrams, FIGS. 5 (a) to 5 (e) are plan views of essential parts showing the operating state of the lock lever, and FIGS. 5 (a ') to 5 (e)' are shown in FIGS. A side sectional view is shown, (a) (a ')
Is the closed state, (b) (b ') is the state when moving, (c)
(C ') shows the state after the movement, (D) and (D') show the temporarily fixed state, (H) and (H ') show the closed state from the temporarily fixed state, and FIG. 6 shows another embodiment. In the operation explanatory diagram of the lock lever of
(A) is a plan view of a closed state, (B) is a plan view of an open state, FIG. 7 is a perspective view of a conventional IC socket, and FIG. 8 is a cross-sectional view of another conventional IC socket. 2, 8: Presser cover, 21: Socket body, 22: One support protrusion, 22 ': Support protrusion, 23: Other support protrusion, 24: Lead slope, 25: Spindle, 26: Bearing, 28: Lock lever , 31: stopper, 33: coil spring.

Claims (2)

[Scope of utility model registration request] 1. A socket body having two support projections for press-fitting a support shaft formed laterally, a holding cover for pushing down an IC package arranged on the socket body, and a support bearing on the support projections. A lock lever that rotates on a shaft to lock the pressed state of the press cover, and a lock lever that is held by the support shaft and that is hooked at the socket body at one end and at the lock lever at the other end. In an IC socket equipped with a coil spring that constantly urges the presser cover side, one side surface of the lock lever is brought into contact with the one support protrusion to project so as to prevent the lock lever from rotating. A formed stopper is provided, and by moving the lock lever along the support shaft in the direction of the one support protrusion when the lock lever rotates. The IC socket, wherein the stopper is moved to a tip position of the one support protrusion and can be temporarily fixed in a state where the lock lever is opened. 2. The support protrusion is such that the other support protrusion projects outward from the one support protrusion, and a triangular lead slope is formed inside the projecting portion. The IC socket according to item 1.