JP3967460B2 - IC package socket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a socket for use in testing whether a manufactured IC package is good or bad.
[0002]
[Prior art]
Conventionally, a plurality of contact members that come in contact with and separate from the contact points of the IC package mounted on the base member have been provided, and the contact members are displaced outwardly by pushing down the desired member, so that the IC package can be attached and detached without load. Various sockets having various structures have been proposed.
[0003]
For example, in Japanese Patent Laid-Open No. 63-299257, a base portion inserted into a socket body, a driven piece extending from the base through an elastic bending portion, and a branching direction from the driven piece in the opposite direction A contact pin having a contact piece that extends to the elastic member and presses against the lead terminal by the elastic force of the elastic bending portion, and a release means that contacts the driven piece and can release the pressure of the lead terminal by the contact piece. An IC inspection socket is disclosed.
[0004]
Japanese Patent Publication No. 4-12624 discloses a clamp that is rotatable between a closed position adjacent to the upper surface of the base and an open position that extends outward from the upper surface of the base, and the clamp is attached to the closed position. An integrated circuit element test socket is disclosed that includes a biasing member for biasing and a contact attached to the clamp and extending laterally.
[0005]
In JP-A-5-152392, a plurality of contact elements are arranged along two sides of the support frame, and as a means for moving a contact portion with the integrated circuit device in the contact elements, an arm that is turned up and down, A socket assembly is disclosed that includes a cam member having a cam projection that provides an outward force on the contact element.
[0006]
[Problems to be solved by the invention]
However, when the technical contents of each conventional socket were examined in detail, it could not be said that there were no problems as follows.
[0007]
That is, in the case of the structure disclosed in Japanese Patent Application Laid-Open No. 63-299257, the contact piece a of the contact pin slides on the lead terminal b while moving from the outer part to the inner part of the lead terminal b. In contact, in other words, the contact piece a has an inclined surface b1 of the bent portion of the lead terminal b. Go back As a result, the rubbing trace becomes larger, and the surface plating of the lead terminal b is scraped off and the plating scrap c is likely to be generated. The plating scrap c drops and remains on the base d on which the lead terminal b is placed. Then, it may adhere to the lead terminal of the IC package mounted next and lead to deformation or electrical failure of the lead terminal (see FIG. 12).
[0008]
The socket of Japanese Patent Publication No. 4-12624 has a structure in which the contact is displaced in a substantially horizontal direction and slidably contacts the lead of the integrated circuit element, and is clamped after the integrated circuit is placed on the upper surface of the base. As the contacts move from the open position to the closed position, the contacts make sliding contact with the leads while moving from the outside to the inside, but the integrated circuit is set upside down, but the above-mentioned problems do not occur. Since the contact moves from the outside to the inside, the stress that presses the lead inward (on the side of the integrated circuit element main body) acts and the lead may be deformed.
[0009]
On the other hand, in the socket of JP-A-5-152392, when the arm is rotated downward, the cam projection displaces the contact portion outwardly against the elasticity of the elastic portion of the contact element. Since there is no sliding rubbing between the contact part and the lead, there is no possibility of generation of plating scraps and lead deformation as described above, but contact is made by the influence of the oxide film formed on the lead surface. There is a risk that reliable conduction between the portion and the lead cannot be achieved. Therefore, in such a structure, it is necessary to increase the contact pressure of the contact portion with respect to the lead (increase the elasticity of the elastic portion), the operability for rotating the arm downward is deteriorated, and the contact element There is a problem that the lifetime is shortened.
[0010]
In order to solve such problems, the applicant of the present application has disclosed an IC package socket in which an IC package can be attached and detached without load by displacing each contact portion of a plurality of contacts simultaneously outward. of While the contact pressure of the contact contact portion with respect to the contact point is relatively small, the oxide film formed on the contact point can be removed to ensure reliable conduction, and there is no risk of stress that deforms the contact point. Proposed a new IC package socket and filed it earlier (Japanese Patent Application No. 8-348647).
However, the previous proposal by the applicant is the IC package. of The contact contact portion with respect to the contact point is one place, and there remains room for improvement in the case where a contact failure occurs.
The present invention has been made in view of such a conventional situation, and in an IC package socket in which each contact portion in a plurality of contacts can be displaced outward at the same time so that the IC package can be attached and detached without load. IC package of While the contact pressure of the contact contact portion with respect to the contact point is relatively small, the oxide film formed on the contact point can be removed to ensure reliable conduction, and there is no risk of stress that deforms the contact point. In addition to the previous proposal by the applicant of the present application to provide a socket, an IC package of The purpose is to improve the conduction reliability of the contact portion with respect to the contact.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, an IC package socket according to the present invention comprises an inner contact piece and an outer contact piece along a side of a base member having an IC package receiving space. Multiple contacts in parallel,
The outer contact piece is Acceptance An outer contact portion that contacts a contact point of the IC package accommodated in the space, and an outer spring portion that applies a contact pressure to the contact point on the outer contact portion;
The inner contact piece is positioned opposite to the outer contact portion, together with the outer contact portion. Said It has an inner contact part that holds the contact,
Further, an engagement member that engages with each contact is rotatably supported outside the row of contacts, and the engagement member is rotated outward by a pressing operation of a cover that is mounted on the base member. As a result, the outer contact portion of each contact is displaced outwardly against the elasticity of the outer spring portion, and the IC package. of A socket for an IC package that is spaced from the contacts,
The engaging member has a movable fulcrum as a movable fulcrum, and each outer contact piece is provided with an actuating portion extending downward from the vicinity of the outer end of the outer contact portion. When the engagement member is rotated outward by the push-down operation of the cover, the rotation fulcrum is moved inward by loosely fitting in the recess provided in the engagement member. The concave portion presses the operating hook portion inward to urge the outer contact portion inward, while the engaging member rotates inward and the outer contact portion Said The urging force by the pressing is released when the contact is made, and the outer contact portion slides outward.
[0012]
The engaging member is supported so as to be rotatable while using the rotation fulcrum as a free fulcrum, and various support can be considered for the support structure.
As an example, it can be mentioned that camshafts protruding on both the left and right sides of the engaging member are rotatably supported by receiving portions provided at predetermined positions of the base member. In this case, it is preferable to appropriately shape the cam shaft and the receiving portion because the rotation direction of the engagement member and the movement direction of the rotation fulcrum can be controlled relatively easily.
Further, as a more specific configuration of the cam shaft and the receiving portion, cam shafts protrude from the left and right sides of the lower portion of the engaging member, and the cam shaft is inserted from above into a receiving portion that is recessed in the outer edge portion of the base member. Or a camshaft projecting from the left and right sides of the lower part of the engaging member or the middle-high part, and a receiving part is formed on the arm that extends downward from the upper part of the base member. Examples include a structure in which the cam shaft is inserted from above or from the side and supported so as to suspend the engaging member.
[0013]
The concave portion provided in the engaging member may be any one of a groove shape, a through-hole shape, and a concave shape as long as the operating collar provided in the contact is loosely slidable.
[0014]
When formed as in claim 1, when the pressing force by the cover does not work, the outer contact portion of each contact is caused by the elasticity of the outer spring portion to form the IC package. of The contact pressure with the contact is in a state (a state in contact with the inner contact portion), and the rotation fulcrum of the engaging member is in the outward position (see FIG. 4).
When the cover is pushed down from this state, the outer contact portion of each contact resists the elasticity of the outer spring portion as the engaging member rotates outward, and the IC package. of Displacement to the outward position away from the contact (away from the inner contact portion). Further, at this time, the pivot fulcrum moves inward, and the concave part presses the operating hook part inward (receiving space side) by the fulcrum movement and the outward rotation of the engaging member, thereby making an outer contact. The part is urged inward (see FIGS. 5 to 6).
At this time, the outer contact portion is displaced outward as the engaging member is rotated outward. At this time, the rotation fulcrum moves from the outer position P1 to the inner position P2. Accordingly, the outer contact portion is displaced while rising in a substantially vertical direction (see FIG. 5), and then the outer contact portion is displaced while being displaced obliquely outward by the rotation of the engaging member at the position of the rotation fulcrum P2. (See FIG. 6).
When the IC package is accommodated in the receiving space with the outer contact portion spaced outward, the contact of the IC package comes into contact with the inner contact portion. After that, if the pressing operation of the cover is released, the outer spring of each contact is released. The engaging member rotates inward by the elasticity of the part and returns to the initial state, and the outer contact part is the IC package. of The contact is brought into contact, and the contact is sandwiched between the inside and outside contact portions. Also, at this time, the outer contact part Said After contact with the contact, the operating collar rises in the recess, the pressing force by the recess is released, and the outer contact portion slides outward (returns to the initial position). of The oxide film formed on the surface of the contact is scraped off. At this time, the pressing of the operating collar by the concave portion has already been released, so that the outer contact portion does not slide inward when the cover is pushed down next (see FIG. 7).
After conducting the continuity test in the above state, the IC is taken out by moving the outer contact portion of each contact away from the contact by pushing down the cover, but when the outer contact portion is displaced outward, the initial displacement is as described above. The outer contact part rises in a substantially vertical direction and then is displaced obliquely upward Said Separated from the contact (see FIGS. 8-9).
[0015]
Thus, according to the first aspect, the outer contact portion of each contact contacts the contact of the accommodated IC package while sliding outward (in the direction opposite to the IC package body). It is possible to remove the formed oxide film and achieve reliable conduction, Said It is not necessary to increase the contact pressure of the outer contact portion with respect to the contact (elasticity of the outer spring portion). Further, when the outer contact portion of each contact is displaced outward to take out the IC package, the pressing force that the outer contact portion slides inward (toward the IC package body) does not act, and Since the outer contact portion rises in a substantially vertical direction and is displaced obliquely upward and away from the contact point, Said The load on the contact can be as small as possible, Said There is no fear that the contacts will be deformed or plating scraps will be generated. And the inner contact is always Said Contact the contact, at the inside and outside contact Said IC package because it has a structure to hold contacts. of The conduction reliability of the contact contact portion with respect to the contact can be improved.
[0016]
The engagement member rotates inward, and the outer contact portion Said It is preferable that the outward contact portion slides outwardly when the contact is brought into contact with the contact and released so that the outer contact portion is slightly rotated.
In this case, it is possible to remove the oxide film on the contact surface with a small amount of sliding to ensure reliable conduction. Said The contact pressure of the outer contact portion with respect to the contact can be smaller.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of an IC package socket according to the present invention will be described with reference to the drawings.
1 is an overall perspective view of the socket of this example, FIG. 2 is a perspective view with a cover removed, FIG. 3 is an enlarged vertical cross-sectional view of the main part, and FIGS. 10 to 11 are enlarged views showing the displacement state of the contact portion, in which 1 is a base member, 2 is a contact, 3 is an engaging member, 4 is a cam shaft, 5 is a cover, and 100 is an IC package (hereinafter referred to as an IC package). (Referred to as “package”).
[0018]
The base member 1 is molded using an insulating material, and has a raised portion having a rectangular shape in plan view at the center thereof, and a recessed portion is formed at the center of the raised portion, and the recessed portion serves as a receiving space 1 a of the package 100. Of the receiving space 1a Opposite The two contacts 2 having the inner contact piece 21 and the outer contact piece 22 are arranged in parallel along the two sides.
[0019]
The contact 2 has a shape as shown in FIG. 3 using a desired conductive material, that is, an outer contact portion 22a that comes into contact with the contact 102 of the package 100 accommodated in the receiving space 1a from above, and biases the outer contact portion 22a. An outer contact portion 22 having an outer spring portion 22b for obtaining a contact pressure with the contact 102, an inner contact portion 21a positioned opposite to the outer contact portion 22a and sandwiching the contact 102 together with the outer contact portion 22a, and the inner side The inner contact piece 21 having an inner spring portion 21b that presses the contact portion 21a against the base member 1 so as to be immovable and an operating collar portion 23 that slides the outer contact portion 22a as described later are integrated. The lower end flat plate portion 24 is placed on the side of the base member 1 and the terminal portion 25 hanging from the flat plate portion 24 is inserted into the through hole 1 c of the base member 1. , It is fixed in a state of launched vertically on the base member 1.
The terminal portion 25 at the lower end of the contact 2 is conducted to a test circuit (not shown).
[0020]
The tip of the outer contact piece 22 has a shape that is curved in a substantially arc shape as shown in the drawing, and the inner end side is an outer contact portion 22a.
The outer spring portion 22b has a basic configuration that extends upward from the inner end of the protruding portion 26 provided on the outer edge of the flat plate portion 24 while curving in a substantially C shape, and the elasticity of the outer spring portion 22b pushes down the cover 5. The outer contact portion 22a is urged inward and downward to obtain a predetermined contact pressure with respect to the contact 102 (inner contact portion 21a) while maintaining the operation load at the time of operation, the operation life thereof, and the like. The part 22a is formed so as to contact the contact 102 of the package 100 with certainty.
[0021]
Further, in this example, the outer spring portion 22b exhibits a predetermined elasticity over a long period of time, and the sliding operation described later of the outer contact portion 22a is more reliably performed in the opposite direction to the middle portion of the outer spring portion 22b. The curved portion 22c is provided.
[0022]
The inner contact piece 21 is formed by connecting a substantially trapezoidal inner contact portion 21a to the upper end of the inner spring portion 21b that rises slightly inward from the flat plate portion 24 inward (in the receiving space 1a direction). The inner contact portion 21a is elastically brought into contact with the upper edge outer peripheral portion 1b of the base member 1 by the elasticity of the inner spring portion 21b, thereby supporting the inner contact portion 21a so as not to move. It forms so that it may become a seating surface of the contact 102 of the package 100 accommodated in the space 1a. Thus, the contact 102 is sandwiched between the inner contact portion 21a and the outer contact portion 22a so that the package 100 can be securely sandwiched.
[0023]
The operating collar 23 is formed to extend downward from the vicinity of the outer end of the outer contact portion 22a, loosely slidably fit into a recess 3b of the engaging member 3 described later, Is rotated inward by the concave portion 3b when it is rotated outward, and accordingly, the outer contact portion 22a is urged inward (in the direction of the receiving space 1a), while the engaging member 3 is inward. When the outer contact portion 22a rotates and comes into contact with the contact 102, it rises in the recess 3b to release the biasing force, and the outer contact portion 22a slides outward (in the direction opposite to the receiving space 1a). It is formed to do.
[0024]
An engaging member 3 that engages with each contact 2 is rotatably disposed outside the row of the plurality of contacts 2.
The engaging member 3 is rotated outward in accordance with the pressing operation of the cover 5, so that the outer contact portion 22 a of each contact 2 is displaced outward and separated from the contact 102. The camshafts 4 provided at the left and right ends thereof are supported by receiving portions (in this example, receiving recesses) 1d provided on the base member 1, and are rotatably supported between the inner position and the outer position. The
The engaging member 3 has an operating portion 3a that rises at a predetermined angle. The operating portion 3a is slidably brought into contact with an inclined surface 5c provided on the cover 5 and rotated outward as the cover 5 is lowered. On the other hand, the cover 5 is formed so as to rotate inward as the cover 5 is raised.
[0025]
On the upper part of the engaging member 3, a concave portion 3b is provided so as to be located inward of the operating portion 3a.
[0026]
As described above, the concave portion 3b loosely fits the operating flange portion 23 of each contact 2 so as to freely slide up and down. In this example, the concave portion 3b has a groove shape formed inside the operating portion 3a. Various correspondences such as a concave shape are possible.
Further, when the engaging member 3 is rotated outward (FIGS. 4 to 6), the recess 3b holds the operating collar 23 between the inner surface upper end portion 3b-1 and the outer surface lower end portion 3b-2. The operating flange 23 is pressed inward by the clamping force, and the outer contact portion 22a is urged inward (in the receiving space 1a direction) by the reaction force. Further, the recess 3b releases the clamping force when the engaging member 3 rotates inward and the outer contact portion 22a comes into contact with the contact 102 (FIGS. 6 to 7). The force for urging inward is released, and accordingly, the outer contact portion 22a is formed to slide outward (in the direction opposite to the receiving space 1a).
[0027]
The cam shaft 4 has a cam portion 4a on the outer peripheral surface (the direction opposite to the receiving space 1a), and is loosely inserted from above into the receiving recess 1d formed so as to correspond to the cam portion 4a. When it does not work, it is located outward by the elasticity of the contact 2, while it is rotated outward integrally with the engaging member 3 by pushing down the cover 5, and inward (receiving space 1a by the action of the cam portion 4a. Direction).
[0028]
That is, when the engagement member 3 is rotated outward, the rotation fulcrum P moves inward, and the depression 3b is pressed inward by the recess 3b as described above, so that the outer contact portion 22a. Is urged inward, and when the engaging member 3 is rotated inward, the rotation fulcrum P moves outward, and is pressed when the outer contact portion 22a contacts the contact 102 as described above. And the outer contact portion 22a is formed to slide outward while slightly rotating.
[0029]
Further, as the engaging member 3 rotates outward, the outer contact portion 22a of each contact 2 is displaced to an outward position away from the contact 102. At that time, the engagement member 3 is rotated in the initial stage of the displacement. As the moving fulcrum P moves from P1 to P2, the outer contact portion 22a is displaced while rising in a substantially vertical direction (see FIG. 8), and then the outer contact is caused by the rotation of the engagement member 3 at the position of the rotation fulcrum P2. The portion 22a is formed so as to be separated from the contact point while being displaced obliquely outward (see FIG. 9).
[0030]
The cover 5 includes a central opening 5a that communicates with the receiving space 1a, and the opening 5a Opposite A portion 5b that covers the row of the plurality of contacts 2 is provided at a portion along the two sides, and an inclined surface 5c that is inclined inward is provided at the left and right end portions inside the portion 5b. In addition, the inclined surface 5c is in contact with the upper end of the operating portion 3a, and is supported so as to be movable up and down while being covered on the base member 1 from above.
[0031]
The engaging member 3, the cam shaft 4, and the cover 5 are each integrally formed of an insulating material.
[0032]
The package 100 has a well-known structure, and a plurality of contacts (leads) 102 bent in a substantially Z shape are provided in parallel on the side edge of the main body 101 placed in a receiving shape in the receiving space 1a. Yes.
[0033]
Thus, according to the socket having the above-described configuration, the elastic force of the outer spring portion 22b of the contact 2 acts in the direction of pressing the outer contact portion 22a downward, so that the contact of the outer contact portion 22a with the contact 102 is achieved. A certain clamping ability of the package 100 can be obtained while maintaining the pressure, the operation load at the time of the pressing operation of the cover 5, the operation life thereof, and the like.
In addition, since the contact 102 is sandwiched between the inner contact portion 21a and the outer contact portion 22a, each contact 2 has a structure that conducts electricity to the contact 102 at two points, and can improve conduction reliability.
[0034]
Hereinafter, the operation of attaching and detaching the package 100 to and from the socket of this example will be described in detail with reference to FIGS.
In the initial state shown in FIG. 4, since the package 100 is not accommodated in the receiving space 1a and the cover 5 is in the raised position, the outer contact portion 22a of each contact 2 contacts the inner side due to the elasticity of the outer spring portion 22b. The contact pressure with the portion 21a is applied.
At this time, the rotation fulcrum P of the engaging member 3 is at the initial position P1.
[0035]
When the cover 5 is pushed down from this state, the outer contact portion 22a of each contact 2 moves away from the inner contact portion 21a against the elasticity of the outer spring portion 22b as the engaging member 3 rotates outward. Displace to the outward position. At this time, the recess 3b is operated by the inner surface upper end portion 3b-1 and the outer surface lower end portion 3b-2 by the outward rotation of the engaging member 3 and the movement of the pivot fulcrum from P1 to P2. The clamp 23 is rotated outward while holding the hook 23, and the holding hook 23 is pressed inward (receiving space 1a side) around the branch portion with the outer contact portion 22a by the holding force. Thus, the outer contact portion 22a is urged inwardly around the branch portion. At this time, since the outer contact portion 22a is displaced to the outward position, the outer contact portion 22a is actually urged obliquely upward, in the drawing, in the upper left direction (FIGS. 5 to 6).
Further, at this time, in the initial stage of outward displacement, the outer contact portion 22a is displaced while rising in a substantially vertical direction as the pivot fulcrum moves from P1 to P2 (see FIG. 5), and then the pivot fulcrum. The outer contact portion 22a is separated from the contact 102 while being displaced obliquely outward by the rotation of the engaging member 3 at the P2 position (see FIG. 6).
[0036]
After the package 100 is accommodated in the receiving space 1a in the state of FIG. 6, if the pressing operation of the cover 5 is released, the engaging member 3 is rotated inward by the elasticity of the outer spring portion 22b of each contact 2. After returning to the initial state, the outer contact portion 22a comes into contact with the contact 102. However, after the outer contact portion 22a comes into contact with the contact 102, the operating collar 23 rises in the recess 3b, and the biasing force ( The outer contact portion 22a is slid outward (returned to the initial position) while being slightly rotated, and the oxide film formed on the surface of the contact 102 is scraped off by the sliding. . At this time, the pressing of the operating collar 23 by the recess 3b has already been released, so that the outer contact portion 22a does not slide inward when the cover 5 is pushed down next (see FIG. 7). .
[0037]
After conducting the continuity test in the state of FIG. 7, the cover 100 is pushed down to separate the outer contact portion 22a of each contact 2 from the contact 102 and take out the package 100. At this time, the outer contact portion 22a is moved outward. In the initial stage of the displacement to the position, as the turning fulcrum moves from P1 to P2 as described above, it is displaced while rising in a substantially vertical direction (see FIG. 8), and then the engaging member 3 at the position of the turning fulcrum P2 The outer contact portion 22a is moved away from the contact point while being displaced obliquely outward (see FIG. 9).
Therefore, the load applied to the contact 102 can be made as small as possible.
[0038]
After the package 100 is taken out in the state of FIG. 9, if the pressing operation of the cover 5 is released, the engaging member 3 is rotated inward by the elastic force of the outer spring portion 22b of each contact 2, and FIG. Return to the initial state shown.
[0039]
FIG. 10 is an enlarged view showing the displacement state of the outer contact portion 22a in the operation state shown in FIGS. 4 to 7. The points S1 to S5 in FIG. 10 are the tips of the outer contact portion 22a, that is, the actual contact points. In FIG. 4, S1 corresponds to FIG. 4, S2 corresponds to FIG. 5, S3 corresponds to FIG. 6, and S4 to S5 correspond to FIG.
[0040]
FIG. 11 is an enlarged view showing the displacement state of the outer contact portion 22a in the operation until returning to the initial state shown in FIG. 4 through FIGS. 7 to 9, and points S5 to S8 in the figure are similarly shown. A portion in contact with the contact 102 is shown. S5 corresponds to FIG. 7, S6 corresponds to FIG. 8, S7 corresponds to FIG. 9, and S8 corresponds to FIG.
[0041]
The example of the embodiment of the socket for IC package according to the present invention has been described above. However, the present invention is not limited to this and is within the scope not departing from the spirit described in claims 1 and 2. Needless to say, this is an appropriate change.
[0042]
【The invention's effect】
Since the socket according to the present invention is configured as described above, the IC package while the outer contact portion of the contact slides from the inside to the outside. of While contacting with the contact point, it rises almost vertically and then moves diagonally upward Said It comes away from the contact. IC package of The contact and the outer contact portion can be reliably conducted, and it is not necessary to increase the contact pressure, so that the operability is good and the life of the contact can be extended. Furthermore, the movement of the outer contact portion is subject to excessive stress and the IC package. of There is no possibility that the contacts may be deformed or plating scraps may be generated.
Therefore, a reliable continuity test can be performed without damaging the IC package, and a highly reliable IC package socket excellent in operability and product life could be provided.
Further, each contact has an inner contact portion and an outer contact portion, and the IC package is formed by the inner and outer contact portions. of Since it has a structure that conducts electricity by pinching contacts, the above-mentioned effects can be obtained and an IC package can be obtained. of It is possible to improve the conduction reliability of the contact with respect to the contact.
[0043]
According to the socket of claim 2, the IC package of Even if the sliding amount of the outer contact portion with respect to the contact is small, the surface oxide film can be removed, so that reliable conduction can be achieved while reducing the contact pressure of the outer contact portion in each contact, and the above effect is more effective. It can be.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an embodiment of an IC package socket according to the present invention.
FIG. 2 is a perspective view of the socket shown in FIG. 1 with a cover removed.
FIG. 3 is a longitudinal sectional view showing an enlarged main part.
FIG. 4 is a schematic view of a main part showing an operating state.
FIG. 5 is a simplified view of a main part showing an operating state.
FIG. 6 is a schematic view of a main part showing an operating state.
FIG. 7 is a simplified view of a main part showing an operating state.
FIG. 8 is a simplified view of a main part showing an operating state.
FIG. 9 is a simplified view of a main part showing an operating state.
FIG. 10 is an enlarged view of a main part showing a displacement state of a contact part.
FIG. 11 is an enlarged view of a main part showing a displacement state of a contact part.
FIG. 12 is an enlarged view of a main part of a conventional socket.
[Explanation of symbols]
1: Base member
1a: Accepting space
1d: receiving recess
2: Contact
21: Inner contact piece
21a: inner contact portion
21b: Inner spring part
22: Outer contact piece
22a: outside contact portion
22b: Outer spring part
23: Working collar
24: Flat plate
3: Engagement member
3a: Actuator
3b: recess
4: Cam shaft
P, P1, P2: Rotating fulcrum
5: Cover
5c: inclined surface
100: IC package
101: Body
102: Contact (lead)

Claims (2)

A plurality of contacts provided with an inner contact piece and an outer contact piece are arranged in parallel along the side of the base member having a receiving space for the IC package,
The outer contact piece has an outer contact portion that comes into contact with a contact of the IC package accommodated in the receiving space, and an outer spring portion that applies a contact pressure with the contact to the outer contact portion,
Inner contact piece has an inner contact portion to sandwich the contact and with the outer contact portion positioned on the outer contact portion and the opposite shape,
Further, an engagement member that engages with each contact is rotatably supported outside the row of contacts, and the engagement member is rotated outward by a pressing operation of a cover that is mounted on the base member. Accordingly, an IC package socket in which the outer contact portion of each contact is displaced outwardly against the elasticity of the outer spring portion and separated from the contact point of the IC package,
The engaging member has a movable fulcrum as a movable fulcrum, and each outer contact piece is provided with an actuating portion extending downward from the vicinity of the outer end of the outer contact portion. When the engagement member is rotated outward by the push-down operation of the cover, the rotation fulcrum is moved inward by loosely fitting in the recess provided in the engagement member. while the recess allowed to urge the pressed the outer contact portion of actuating rod portions inwardly inwardly, said press when said engaging member is pivoted inwardly the outer contact portion in contact with the contact A socket for an IC package, characterized in that the socket is released and the outer contact portion slides outward. 2. The IC package socket according to claim 1, wherein the outer contact portion slides outwardly when contacting the contact so that the outer contact portion is slightly rotated.

Images