CA2053464A1 - Ic socket - Google Patents
Ic socketInfo
- Publication number
- CA2053464A1 CA2053464A1 CA002053464A CA2053464A CA2053464A1 CA 2053464 A1 CA2053464 A1 CA 2053464A1 CA 002053464 A CA002053464 A CA 002053464A CA 2053464 A CA2053464 A CA 2053464A CA 2053464 A1 CA2053464 A1 CA 2053464A1
- Authority
- CA
- Canada
- Prior art keywords
- supporting platform
- socket
- socket body
- platform
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
- H05K7/10—Plug-in assemblages of components, e.g. IC sockets
- H05K7/1015—Plug-in assemblages of components, e.g. IC sockets having exterior leads
- H05K7/1023—Plug-in assemblages of components, e.g. IC sockets having exterior leads co-operating by abutting, e.g. flat pack
Abstract
ABSTRACT OF THE DISCLOSURE
An IC socket has an IC supporting platform upwardly resiliently held on a socket body for vertical movement and adapted to contact with contacts had by the socket body, and an anchoring member for anchoring the IC supporting platform to the socket body against the resiliently holding force.
The anchoring member is loosely engaged with the supporting platform at a central portion of the IC supporting platform.
The IC supporting platform is playably anchored at the loosely engaging portion.
An IC socket has an IC supporting platform upwardly resiliently held on a socket body for vertical movement and adapted to contact with contacts had by the socket body, and an anchoring member for anchoring the IC supporting platform to the socket body against the resiliently holding force.
The anchoring member is loosely engaged with the supporting platform at a central portion of the IC supporting platform.
The IC supporting platform is playably anchored at the loosely engaging portion.
Description
2~34~
IC SOCKET
BACKGROUND OF THE INVENTION
1. FIELD OF THE IN~ENTI.ON
This invention relates to an IC socket for supporting an IC on its supporting platform so that the IC is readily con-tacted with contacts.
2. BRIEF DESCRIP~ION OF THE PRIOR ART
Figs. 8 through 10 show a conventional IC socket includ-ing an IC supporting platform.
An IC supporting platform 2 has leg portions 3 extending downward in parallel relation. The leg portions 3 are in-serted into a guide hole ~ formed in a socket body 1 and at the same time, outwardly facing retaining claws 3a each formed on a lower end of each of the leg portions 3 is retained in the wall of the guide hole 4 In order to prevent the IC supporting platform 2 from escaping upwardly. Fur-thermore, the leg portions 3 also serve to allow vertical and horizontal movements of the supporting platform against a spring 5 in association with the spring 5 urging the support-ing platform 2 upwardly while holding the supporting platform 2 in its uppermost position. The supporting platform 2 and the leg portions 3 are comprised of a unitary number of com-ponent parts integrally formed of a synthetic resin material.
2~3~64 When an IC is placed on the supporting platform 2 and pushed down by a cover (not shown) mounted on the socket body 1, or by a robot, the supporting platform 2 is moved in the horizontal direction while being lowered integrally together with the leg portions 3 against the spring 5.
On the other hand, contact portions 7 of contacts 6 are in engagement with positioning holes 8 formed in a marginal portion of the supporting platform 2 and orderly arranged in a row. When the supporting platform 2 i5 moved in the hori~ontal direction integrally together with the leg por-tions 3 in order to be brought into correspondence with the IC, the contact portions 7 are also displaced following -the movement of the supporting platform 2. As a result, a cor~
rect correspondence between each contact portion 7 and each IC lead can be obtained.
However, in the above-mentioned conventional IC socket, if a gap formed between the guide hole 4 formed in the socket body 1 and each of the leg portions 3 is small as shown in Fig. 8, the range of a hurizontal movement of the supporting platform 2 is extremely limited. On the contrary, if the gap between the guide hole 4 and each of the leg portions 3 is designed to be large in order to obtain a large amount of movement of the supporting platform 9 as shown in Fig. g, there is such inconveniences as that the retaining claw 3a of the leg portion 3 is escaped from the guide hole 4 as shown 2~53~
in Fig. 10 when the supporting platform 2 is moved in the horizontal d;rection. If the retaining ~law 3a is ~esigned to be large in order to prevent the afnre-mentioned un-desirable incident, the spring stroke of the leg portion 3 is required to be set long in view of necessity for pushing the leg portion 3 into the guide hole 4 and retained at the wall of the guide hole 4. As a result, an increased bulk of the socket as a whole is resulted.
Furthermore, it has also such inconveniences as that the horizontal movement of the supporting platform with the IC
placed thereon lacks smoothness and reliabilitY due to elas-tic resistance of the leg portions and retaining resistance of the retaining claws, and as a result, proper contact rela-tions between IC leads and the contacts arranged at micro pitches become difficult to obtain.
SUMMARY OF THE INVENTION
It is therefore an ob~ect of the present invention to provide, in order to obviate the above inconveniences, an IC
socket in which a supporting platform can, smoothly and reliably, be horiæontally moved into a position correctlY
corresponding to an IC mounted thereon, without increasing the bulk of the IC socket.
Anôther obiect of the invention is to provide an IC
socket in which an IC is stably supported both on a lead sup-porting platform and on an IC body supporting platform, sothat deformation of the IC leads can effectively be prevented, and both vertical and horizontal movements can surely be effected without increasing the bulk of the IC
socket.
As means for obviating the above inconveniences, the present invention is constituted as follows. An IC support-ing platform is resiliently held on a socket body for verti-cal movement. An anchoring member for anchoring the IC sup-porting platform to the socket body against the resilient force is loosely engaged with the supporting platform. In other words, the anchoring member is loosely engaged with the supporting platform so that the supporting platform is playably anchored at the loosely engaging portion.
From another aspect of the present invention, it is con-stituted as follows. A socket body includes a ~ertically movable first supporting platform for supporting IC leads, and a second supporting platform for supporting an IC body at a central portion of the first supporting platform. Leg po-tions extending do~nward from the second supporting platform are implanted in the socket body for the purpose of anchoring the irst supporting platform. The leg portions of the second supporting platform are loosely inserted into a central opening formed in the first supporting platform in order to playably anchor the first supporting platform.
~3~4 Moreover, the second supporting platform is also resiliently held on the socket body for vertical movement and anchored thereto in such a manner as to be able to move in the horizontal direction as in the first supporting platform.
According to the present invention, when the IC is placed on the supporting platform and pushed down, the sup-porting platform is lowered while being moved in the horizon-tal direction against the resilient contacting orce at the loosely engaging portion between the supporting platform and the anchoring member. As a result, a relative position be-tween the IC and the supporting platform, and relative posi-tions between the IC leads and the contacts are properly secured. A horizontal movement of the supporting platform can be secured at the loosely engaging portion between the supporting platform and the anchoring member. The anchoring member may be formed in a length long enough for anchoring the supporting platform. As a result, the above-mentioned effects can be obtained without increasing the bulk of the socket.
Furthermore,-according to the present invention, when the IC is placed on the socket and Pushed down, the IC leads are supported on the first supporting platform and the IC
body is supported on the second supporting platform. As a result, the IC can stably be supported for the purpose of contact. In addition, deformation of the IC leads can be 2~3~6~
prevented at the time the IC is placed on the socket and brought into contact under pressure. As in the above-mentinned case, a sufficient amount of horizontal movement of the first supporting platform is secured at the loosely in-serted portion between the leg portion of the second support-ing platform and the first supporting platform. Accord-ingly, it is no more required to form the leg portion long in order to increase the amount of horizontal movement. As a result, an increased bulk of the socket is not resulted.
~ oreover, since the second supporting platform is resiliently moved only following the resilient movement of the first supporting platform, the IC can be more reliabl~
supported and properly contacted.
BRIEF DESCRIPTI ON OF THE DRAWI NGS
Fig. 1 is a plan view of an IC socket according to the first embodiment of the present invention;
Fig. 2 is a sectional view of the IC socket of Fig. 1;
Fi~. 3 is likewise a sectional view of the IC socket of Fig. 1 but showing a state where a supporting platform is moved in a horizontal direction;
Fig. 4 is also a sectional view of the IC of Fig. 1, but showing an inclined state of the supporting platform;
Fig. 5 is a sectional view of an IC socket according to the second embodiment of the present invention, showing IC
2~3~6~
leads supported on a first supporting platform;
Fig. 6 is likewise a sectional view of the IC socket of Fig. 5, showing an IC body placed on a second supporting platform;
Fig. 7 is also a sectional view of the IC socket of Fig.
6, but showing the IC pressed against a radiating pla~e by the second supporting platform;
Fig. 8 is a sectional view of a conventional IC socket;
and Figs. 9 and 10 are likewise sectional views of a similar conventional IC socket to that of Fig. 8, but showing a com-paratively large space formed between a guide hole and each leg portion.
DETAILED DESCRIPTION OF THE EMBODIMENTS
While describing the embodiments of the present inven-tion with reference to Fig. 1 and Figs. 5 through 7, the first embodiment will be described in detail with reference to Figs. 2 and 4. The reference numerals used herein are irrespective of those of the conventional IC socket.
The numeral 1 denotes a socket body formed of a generally rectangular insulated base member. The socket body 1 includes a first supporting platform 2 vertically movably disposed on a central portion of its upper surface.
A plurality of contacts are arranged in parallel relation 2~3~6~
along four sides or two sides of the outer periphery of the first supporting platform 2. The first supporting platform 2 has a second supporting platform 4 disposed at its central portion.
The second supporting platform 4 has resilient leg por-tions 4a extending downward in parallel relation. Each of the leg portions 4a has an engaging claw 4b formed on its free end in such a manner as to be vertically spaced apart and adapted to engage with the socket body 1 in order to prevent the second supporting platform 4 from being escaped.
The socket body 1 is provided with an opening la formed in a central portion immediately under the first supporting plat-form 2. The retaining claw 4b facing outward is inserted into the central opening la against the elasticity of the leg portion 4a and engaged with a peripheral edge of the opening la by the restoring force of the retaining claw 4b. A
spring 5 is disposed between, for example, the first support-ing platform 2 and the socket body 1 in order to resiliently support the first supporting platform upwardly. As a result, the first ffupporting platform 2 is lowered against the spring 5 and raised in accordance with the spring 5.
Also, by virtue of the foregoing arrangement, a horizontal movement and an inclining movement as will be described hereinafter are obtainable. That is, the first supporting platform 2 is provided with a central opening 2a formed in a 21~34~
central portion thereof and permitting the leg portion 4a of the second supporting platform 4 to be loosely inserted therein. Upon engagement of the retaining claw 4b of the second supporting platf~rm 4 passed through the central open-ing 2a and restored, with the peripheral wall of the central opening la of the socket body 1, the second supporting plat-form 4 is anchored by the socket body 1. As a result, the first supporting platform 2 is held in its uppermost position against the spring 5 and able to effect the above-mentioned vertical and horizontal movements and an inclining movement.
The first supporting platform 2 is provided with IC position-ing portions 2b projecting from the area around the central opening 2a.
The second supporting platform 4 and thè leg portion 4a form anchor member for anchoring the first supporting plat-form 2 against the resiliency of the spring 5. At that time, the second supporting platform 4 is retained to the first supporting platform 2 in order to act as retaining means for preventing the first supporting platform 2 from moving upward. In the anchor member, the leg portion 4a is loosely fitted into the central opening 2a of the first sup-porting platform 2 for permitting the first supporting plat-form from moving horizontally. The anchoring member is dis-posed on the socket body 1 in such a manner as to be able to move in the vertical direction (upward and downward) by the 2~3~6~
leg portion 4af or otherwise, fixedly implanted therein without being resiliently held by the spring, as shown in Figs. 2 through 4, so that the anchoring member is incapable of movement in the vertical direction. A plurality of positioning holes 6 are arranged in parallel relation in mar-ginal portions of four sides or two sides of the outer peripheral portion of the first supporting platform 2 at con-tact pitches, and therefore, at the equal pitches to those of the IC leads 7a. The holes 6 are adapted to receive contact portions 3b at distal ends of the corresponding contacts 3 in order to correctly position the contacts 3.
The contacts 3 are implanted in the socket body portion at the outer peripheral portion of the first supporting plat-form 2. Each of the contacts 3 has an elastic contact ele-ment 3a extending toward the first supporting platform 2 from the implanted portion, and the contact portion 3b of the elastic contact element 3a is inserted into the corresponding positioning hole 6 as mentioned. The elastic contact ele-ment 3a is restricted the sideward displacemen-t of the con-tact portion 3b in the positioning hole 6, to thereby estab-lishing a relative position between the first supporting platform 2 and the contact 3. When the first supporting platfarm 2 is horizontally moved either forwardly and back-wardly or rightwardly and leftwardly, the elastic contact element 3a of the contact 3 is also displaced following -2~3464 thereto in order to maintain its relative position to the first supporting platform 2.
In this way, the first supporting platform 2 can be moved forwardly and backwardly, rightwardly and leftwardly, and upwardly and downwardly, and is engaged with the second supporting platform 4 to restrict its raised position.
The second supporting platform 4 is resiliently sup-ported upwardly on the socket body 1 through a spring 8 in-terposed therebetween. The second supporting platform 4 is lowered against the spring 8 and raised`in accordance with the spring 8. It isheld in its uppermost position against the spring 8.
The embodiment shown in Figs. 2 through 4 includes a second supporting platform 4, which also acts as a retaining means, as in the embodiment shown in Figs. 5 through 7.
Otherwise, it maY include a retaining portion 4' merel~ form-ing an anchoring member and expanding like the shape of a flange at an upper end of the leg portion 4a. The flange-like upper end of the retaining portion 4' is retained at an upper peripheral edge of the central opening 2a to anchor the first supporting platform 2. The second supporting platform ~ (retaining portion 4') is not resiliently held by a spring and the leg portion 4a is fixedly implanted in the socket body 1 so that it is incapable of moving upward and downward as mentioned above. When a flat type IC 7 is placed on the ~3~
first supporting platform 2, the first supporting platform 2 is moved at the looselY engaged portion between the central opening 2a and the leg portion 4a in association with the movement ~f the flat type IC 7, and the elastic element 3a of each contact is also displaced following the movement thereof. As a result, relative positions between the IC
leads 7a and the contact portions 3b of the contacts are maintained. At that time, the first supporting platform 2 is operated to correctly position the side edge of the IC
body 7b through its IC positioning portion 2b, and support the IC lead 7a on an upper surface of the positioning por-tion. At the same time, the IC body 7b is supported by the second supporting platform 4 so -that the former is brought into contact with the contact portion 3b of the contact 3.
It may be designed-such that the IC is originally not placed on the supporting platform but held in a s-tate floating over the supparting platform. In that state, the IC lead 7a is placed on the contac~ portion 3b of the contact 3. When pushed down, the IC is supported on the first supporting platform, and the IC body is likewise supported on the second supporting platform 2.
As is shown in Fig. 7, when a presser plate 10 including a radiating plate 9 is shut on the base member of the socket, the lead 7a of the IC 7 or the IC body 7b is pressed together with the first supporting platform 2 so that it is moved 2~3~
downward against the spring 5. As a reac-tion, the contact portion 3b of the contact 3 is brought into abutment with the IC lead 7a and bent in that state in order to obtain a con-tact pressure by its restoring force. Further, irrespective of the lower position of the first supporting platform 2, the second supporting platform 4 urges the IC 7 against the radiating plate 9 to secure a reliable contact between the IC
7 and the radiating plate 9. As a result, favorable radiat-ing effects can be obtained.
Accordin~ to the present invention, the relative posi-tion between the IC and supporting platform and the relative positions between the IC leads and contacts can be correctly corresponded with each other by smoothly and reliably moving the supporting platform in the horizontal direction at the loosely engaging portion between the supporting platform and the anchoring member. As a result, a highly reliable con-tact relation can be obtained.
Furthermore, a stable contact relation can be obtained by supporting the IC both by the supporting platform for sup-porting the IC leads and by another supporting platform for supporting the IC body. Also, deformation of IC leads can effectively be prevented when they are brought into contact.
Moreover, according to the present invention~ it is no more re~uired to make the elastic stroke of the leg portions as in the past in order to obtain a proper amount o~ horizon-.
2~3~6~
tal movement of the first supporting platform. As a result,an initially intended object can be achieved without increas-ing the bulk of the IC socket.
IC SOCKET
BACKGROUND OF THE INVENTION
1. FIELD OF THE IN~ENTI.ON
This invention relates to an IC socket for supporting an IC on its supporting platform so that the IC is readily con-tacted with contacts.
2. BRIEF DESCRIP~ION OF THE PRIOR ART
Figs. 8 through 10 show a conventional IC socket includ-ing an IC supporting platform.
An IC supporting platform 2 has leg portions 3 extending downward in parallel relation. The leg portions 3 are in-serted into a guide hole ~ formed in a socket body 1 and at the same time, outwardly facing retaining claws 3a each formed on a lower end of each of the leg portions 3 is retained in the wall of the guide hole 4 In order to prevent the IC supporting platform 2 from escaping upwardly. Fur-thermore, the leg portions 3 also serve to allow vertical and horizontal movements of the supporting platform against a spring 5 in association with the spring 5 urging the support-ing platform 2 upwardly while holding the supporting platform 2 in its uppermost position. The supporting platform 2 and the leg portions 3 are comprised of a unitary number of com-ponent parts integrally formed of a synthetic resin material.
2~3~64 When an IC is placed on the supporting platform 2 and pushed down by a cover (not shown) mounted on the socket body 1, or by a robot, the supporting platform 2 is moved in the horizontal direction while being lowered integrally together with the leg portions 3 against the spring 5.
On the other hand, contact portions 7 of contacts 6 are in engagement with positioning holes 8 formed in a marginal portion of the supporting platform 2 and orderly arranged in a row. When the supporting platform 2 i5 moved in the hori~ontal direction integrally together with the leg por-tions 3 in order to be brought into correspondence with the IC, the contact portions 7 are also displaced following -the movement of the supporting platform 2. As a result, a cor~
rect correspondence between each contact portion 7 and each IC lead can be obtained.
However, in the above-mentioned conventional IC socket, if a gap formed between the guide hole 4 formed in the socket body 1 and each of the leg portions 3 is small as shown in Fig. 8, the range of a hurizontal movement of the supporting platform 2 is extremely limited. On the contrary, if the gap between the guide hole 4 and each of the leg portions 3 is designed to be large in order to obtain a large amount of movement of the supporting platform 9 as shown in Fig. g, there is such inconveniences as that the retaining claw 3a of the leg portion 3 is escaped from the guide hole 4 as shown 2~53~
in Fig. 10 when the supporting platform 2 is moved in the horizontal d;rection. If the retaining ~law 3a is ~esigned to be large in order to prevent the afnre-mentioned un-desirable incident, the spring stroke of the leg portion 3 is required to be set long in view of necessity for pushing the leg portion 3 into the guide hole 4 and retained at the wall of the guide hole 4. As a result, an increased bulk of the socket as a whole is resulted.
Furthermore, it has also such inconveniences as that the horizontal movement of the supporting platform with the IC
placed thereon lacks smoothness and reliabilitY due to elas-tic resistance of the leg portions and retaining resistance of the retaining claws, and as a result, proper contact rela-tions between IC leads and the contacts arranged at micro pitches become difficult to obtain.
SUMMARY OF THE INVENTION
It is therefore an ob~ect of the present invention to provide, in order to obviate the above inconveniences, an IC
socket in which a supporting platform can, smoothly and reliably, be horiæontally moved into a position correctlY
corresponding to an IC mounted thereon, without increasing the bulk of the IC socket.
Anôther obiect of the invention is to provide an IC
socket in which an IC is stably supported both on a lead sup-porting platform and on an IC body supporting platform, sothat deformation of the IC leads can effectively be prevented, and both vertical and horizontal movements can surely be effected without increasing the bulk of the IC
socket.
As means for obviating the above inconveniences, the present invention is constituted as follows. An IC support-ing platform is resiliently held on a socket body for verti-cal movement. An anchoring member for anchoring the IC sup-porting platform to the socket body against the resilient force is loosely engaged with the supporting platform. In other words, the anchoring member is loosely engaged with the supporting platform so that the supporting platform is playably anchored at the loosely engaging portion.
From another aspect of the present invention, it is con-stituted as follows. A socket body includes a ~ertically movable first supporting platform for supporting IC leads, and a second supporting platform for supporting an IC body at a central portion of the first supporting platform. Leg po-tions extending do~nward from the second supporting platform are implanted in the socket body for the purpose of anchoring the irst supporting platform. The leg portions of the second supporting platform are loosely inserted into a central opening formed in the first supporting platform in order to playably anchor the first supporting platform.
~3~4 Moreover, the second supporting platform is also resiliently held on the socket body for vertical movement and anchored thereto in such a manner as to be able to move in the horizontal direction as in the first supporting platform.
According to the present invention, when the IC is placed on the supporting platform and pushed down, the sup-porting platform is lowered while being moved in the horizon-tal direction against the resilient contacting orce at the loosely engaging portion between the supporting platform and the anchoring member. As a result, a relative position be-tween the IC and the supporting platform, and relative posi-tions between the IC leads and the contacts are properly secured. A horizontal movement of the supporting platform can be secured at the loosely engaging portion between the supporting platform and the anchoring member. The anchoring member may be formed in a length long enough for anchoring the supporting platform. As a result, the above-mentioned effects can be obtained without increasing the bulk of the socket.
Furthermore,-according to the present invention, when the IC is placed on the socket and Pushed down, the IC leads are supported on the first supporting platform and the IC
body is supported on the second supporting platform. As a result, the IC can stably be supported for the purpose of contact. In addition, deformation of the IC leads can be 2~3~6~
prevented at the time the IC is placed on the socket and brought into contact under pressure. As in the above-mentinned case, a sufficient amount of horizontal movement of the first supporting platform is secured at the loosely in-serted portion between the leg portion of the second support-ing platform and the first supporting platform. Accord-ingly, it is no more required to form the leg portion long in order to increase the amount of horizontal movement. As a result, an increased bulk of the socket is not resulted.
~ oreover, since the second supporting platform is resiliently moved only following the resilient movement of the first supporting platform, the IC can be more reliabl~
supported and properly contacted.
BRIEF DESCRIPTI ON OF THE DRAWI NGS
Fig. 1 is a plan view of an IC socket according to the first embodiment of the present invention;
Fig. 2 is a sectional view of the IC socket of Fig. 1;
Fi~. 3 is likewise a sectional view of the IC socket of Fig. 1 but showing a state where a supporting platform is moved in a horizontal direction;
Fig. 4 is also a sectional view of the IC of Fig. 1, but showing an inclined state of the supporting platform;
Fig. 5 is a sectional view of an IC socket according to the second embodiment of the present invention, showing IC
2~3~6~
leads supported on a first supporting platform;
Fig. 6 is likewise a sectional view of the IC socket of Fig. 5, showing an IC body placed on a second supporting platform;
Fig. 7 is also a sectional view of the IC socket of Fig.
6, but showing the IC pressed against a radiating pla~e by the second supporting platform;
Fig. 8 is a sectional view of a conventional IC socket;
and Figs. 9 and 10 are likewise sectional views of a similar conventional IC socket to that of Fig. 8, but showing a com-paratively large space formed between a guide hole and each leg portion.
DETAILED DESCRIPTION OF THE EMBODIMENTS
While describing the embodiments of the present inven-tion with reference to Fig. 1 and Figs. 5 through 7, the first embodiment will be described in detail with reference to Figs. 2 and 4. The reference numerals used herein are irrespective of those of the conventional IC socket.
The numeral 1 denotes a socket body formed of a generally rectangular insulated base member. The socket body 1 includes a first supporting platform 2 vertically movably disposed on a central portion of its upper surface.
A plurality of contacts are arranged in parallel relation 2~3~6~
along four sides or two sides of the outer periphery of the first supporting platform 2. The first supporting platform 2 has a second supporting platform 4 disposed at its central portion.
The second supporting platform 4 has resilient leg por-tions 4a extending downward in parallel relation. Each of the leg portions 4a has an engaging claw 4b formed on its free end in such a manner as to be vertically spaced apart and adapted to engage with the socket body 1 in order to prevent the second supporting platform 4 from being escaped.
The socket body 1 is provided with an opening la formed in a central portion immediately under the first supporting plat-form 2. The retaining claw 4b facing outward is inserted into the central opening la against the elasticity of the leg portion 4a and engaged with a peripheral edge of the opening la by the restoring force of the retaining claw 4b. A
spring 5 is disposed between, for example, the first support-ing platform 2 and the socket body 1 in order to resiliently support the first supporting platform upwardly. As a result, the first ffupporting platform 2 is lowered against the spring 5 and raised in accordance with the spring 5.
Also, by virtue of the foregoing arrangement, a horizontal movement and an inclining movement as will be described hereinafter are obtainable. That is, the first supporting platform 2 is provided with a central opening 2a formed in a 21~34~
central portion thereof and permitting the leg portion 4a of the second supporting platform 4 to be loosely inserted therein. Upon engagement of the retaining claw 4b of the second supporting platf~rm 4 passed through the central open-ing 2a and restored, with the peripheral wall of the central opening la of the socket body 1, the second supporting plat-form 4 is anchored by the socket body 1. As a result, the first supporting platform 2 is held in its uppermost position against the spring 5 and able to effect the above-mentioned vertical and horizontal movements and an inclining movement.
The first supporting platform 2 is provided with IC position-ing portions 2b projecting from the area around the central opening 2a.
The second supporting platform 4 and thè leg portion 4a form anchor member for anchoring the first supporting plat-form 2 against the resiliency of the spring 5. At that time, the second supporting platform 4 is retained to the first supporting platform 2 in order to act as retaining means for preventing the first supporting platform 2 from moving upward. In the anchor member, the leg portion 4a is loosely fitted into the central opening 2a of the first sup-porting platform 2 for permitting the first supporting plat-form from moving horizontally. The anchoring member is dis-posed on the socket body 1 in such a manner as to be able to move in the vertical direction (upward and downward) by the 2~3~6~
leg portion 4af or otherwise, fixedly implanted therein without being resiliently held by the spring, as shown in Figs. 2 through 4, so that the anchoring member is incapable of movement in the vertical direction. A plurality of positioning holes 6 are arranged in parallel relation in mar-ginal portions of four sides or two sides of the outer peripheral portion of the first supporting platform 2 at con-tact pitches, and therefore, at the equal pitches to those of the IC leads 7a. The holes 6 are adapted to receive contact portions 3b at distal ends of the corresponding contacts 3 in order to correctly position the contacts 3.
The contacts 3 are implanted in the socket body portion at the outer peripheral portion of the first supporting plat-form 2. Each of the contacts 3 has an elastic contact ele-ment 3a extending toward the first supporting platform 2 from the implanted portion, and the contact portion 3b of the elastic contact element 3a is inserted into the corresponding positioning hole 6 as mentioned. The elastic contact ele-ment 3a is restricted the sideward displacemen-t of the con-tact portion 3b in the positioning hole 6, to thereby estab-lishing a relative position between the first supporting platform 2 and the contact 3. When the first supporting platfarm 2 is horizontally moved either forwardly and back-wardly or rightwardly and leftwardly, the elastic contact element 3a of the contact 3 is also displaced following -2~3464 thereto in order to maintain its relative position to the first supporting platform 2.
In this way, the first supporting platform 2 can be moved forwardly and backwardly, rightwardly and leftwardly, and upwardly and downwardly, and is engaged with the second supporting platform 4 to restrict its raised position.
The second supporting platform 4 is resiliently sup-ported upwardly on the socket body 1 through a spring 8 in-terposed therebetween. The second supporting platform 4 is lowered against the spring 8 and raised`in accordance with the spring 8. It isheld in its uppermost position against the spring 8.
The embodiment shown in Figs. 2 through 4 includes a second supporting platform 4, which also acts as a retaining means, as in the embodiment shown in Figs. 5 through 7.
Otherwise, it maY include a retaining portion 4' merel~ form-ing an anchoring member and expanding like the shape of a flange at an upper end of the leg portion 4a. The flange-like upper end of the retaining portion 4' is retained at an upper peripheral edge of the central opening 2a to anchor the first supporting platform 2. The second supporting platform ~ (retaining portion 4') is not resiliently held by a spring and the leg portion 4a is fixedly implanted in the socket body 1 so that it is incapable of moving upward and downward as mentioned above. When a flat type IC 7 is placed on the ~3~
first supporting platform 2, the first supporting platform 2 is moved at the looselY engaged portion between the central opening 2a and the leg portion 4a in association with the movement ~f the flat type IC 7, and the elastic element 3a of each contact is also displaced following the movement thereof. As a result, relative positions between the IC
leads 7a and the contact portions 3b of the contacts are maintained. At that time, the first supporting platform 2 is operated to correctly position the side edge of the IC
body 7b through its IC positioning portion 2b, and support the IC lead 7a on an upper surface of the positioning por-tion. At the same time, the IC body 7b is supported by the second supporting platform 4 so -that the former is brought into contact with the contact portion 3b of the contact 3.
It may be designed-such that the IC is originally not placed on the supporting platform but held in a s-tate floating over the supparting platform. In that state, the IC lead 7a is placed on the contac~ portion 3b of the contact 3. When pushed down, the IC is supported on the first supporting platform, and the IC body is likewise supported on the second supporting platform 2.
As is shown in Fig. 7, when a presser plate 10 including a radiating plate 9 is shut on the base member of the socket, the lead 7a of the IC 7 or the IC body 7b is pressed together with the first supporting platform 2 so that it is moved 2~3~
downward against the spring 5. As a reac-tion, the contact portion 3b of the contact 3 is brought into abutment with the IC lead 7a and bent in that state in order to obtain a con-tact pressure by its restoring force. Further, irrespective of the lower position of the first supporting platform 2, the second supporting platform 4 urges the IC 7 against the radiating plate 9 to secure a reliable contact between the IC
7 and the radiating plate 9. As a result, favorable radiat-ing effects can be obtained.
Accordin~ to the present invention, the relative posi-tion between the IC and supporting platform and the relative positions between the IC leads and contacts can be correctly corresponded with each other by smoothly and reliably moving the supporting platform in the horizontal direction at the loosely engaging portion between the supporting platform and the anchoring member. As a result, a highly reliable con-tact relation can be obtained.
Furthermore, a stable contact relation can be obtained by supporting the IC both by the supporting platform for sup-porting the IC leads and by another supporting platform for supporting the IC body. Also, deformation of IC leads can effectively be prevented when they are brought into contact.
Moreover, according to the present invention~ it is no more re~uired to make the elastic stroke of the leg portions as in the past in order to obtain a proper amount o~ horizon-.
2~3~6~
tal movement of the first supporting platform. As a result,an initially intended object can be achieved without increas-ing the bulk of the IC socket.
Claims (3)
1. An IC socket comprising an IC supporting platform upwardly resiliently held on a socket body for vertical move-ment and adapted to contact with contacts had by said socket body, and an anchoring member for anchoring said IC support-ing platform to said socket body against the resiliently holding force, said anchoring member being loosely engaged with said supporting platform at a central portion of said IC
supporting platform, said IC supporting platform being playably anchored at said loosely engaging portion.
supporting platform, said IC supporting platform being playably anchored at said loosely engaging portion.
2. An IC socket comprising a first supporting platform upwardly resiliently held on a socket body for vertical move-ment and adapted to engage with contacts had by said socket body, a second supporting platform disposed to a central por-tion of said first supporting platform and adapted to support an IC body, and leg portions extending downward from said second supporting platform and implanted in said socket body, said leg Portions being loosely inserted into a central open-ing formed in said first supporting platform, said second supporting platform being brought into engagement with said first supporting platform in order to playably anchor said first supporting platform to said socket body against said spring.
3. An IC socket as claimed in claim 2, wherein said second supporting platform is vertically movably mounted on said socket body by said leg portions and upwardly resiliently held by said spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274422A JPH0668983B2 (en) | 1990-10-12 | 1990-10-12 | IC socket |
| JP2-274422 | 1990-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2053464A1 true CA2053464A1 (en) | 1992-04-13 |
Family
ID=17541455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002053464A Abandoned CA2053464A1 (en) | 1990-10-12 | 1991-10-08 | Ic socket |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5154619A (en) |
| EP (1) | EP0480668B1 (en) |
| JP (1) | JPH0668983B2 (en) |
| KR (1) | KR920008997A (en) |
| CA (1) | CA2053464A1 (en) |
| DE (1) | DE69106652D1 (en) |
| SG (1) | SG30495G (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336096A (en) * | 1991-03-22 | 1994-08-09 | Enplas Corporation | IC socket and its contact pin |
| GB2257849B (en) * | 1991-06-28 | 1995-11-22 | Digital Equipment Int | Semiconductor chip test jig |
| JP2551179Y2 (en) * | 1991-06-27 | 1997-10-22 | 山一電機株式会社 | IC socket |
| JPH06119959A (en) * | 1992-10-05 | 1994-04-28 | Texas Instr Japan Ltd | Socket |
| US5358421A (en) * | 1993-08-06 | 1994-10-25 | Minnesota Mining And Manufacturing Company | Zero-insertion-force socket for gull wing electronic devices |
| KR0123780Y1 (en) * | 1994-11-01 | 1998-10-01 | 문정환 | Socket for semiconductor device |
| JP2980235B2 (en) * | 1997-04-17 | 1999-11-22 | 山一電機株式会社 | IC socket for IC package |
| JP2004216082A (en) * | 2003-01-10 | 2004-08-05 | Uni Charm Corp | Pants-type disposable article to wear |
| TWM351527U (en) * | 2008-06-16 | 2009-02-21 | Hon Hai Prec Ind Co Ltd | Electrical connector |
| US20100009825A1 (en) * | 2008-07-10 | 2010-01-14 | Ati Industrial Automation, Inc. | Compliant Service Transfer Module for Robotic Tool Changer |
| KR20120006301A (en) * | 2010-07-12 | 2012-01-18 | 삼성전자주식회사 | Test socket |
| JP6400342B2 (en) * | 2014-06-11 | 2018-10-03 | 株式会社エンプラス | Socket for electrical parts |
| JP7058194B2 (en) * | 2018-07-27 | 2022-04-21 | 株式会社エンプラス | socket |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541676A (en) * | 1984-03-19 | 1985-09-17 | Itt Corporation | Chip carrier test adapter |
| JPS62160676A (en) * | 1985-12-31 | 1987-07-16 | 日本テキサス・インスツルメンツ株式会社 | Socket |
| JPS63291375A (en) * | 1987-05-22 | 1988-11-29 | Yamaichi Electric Mfg Co Ltd | Ic socket |
| US4750890A (en) * | 1987-06-18 | 1988-06-14 | The J. M. Ney Company | Test socket for an integrated circuit package |
| JPH01119043A (en) * | 1987-10-31 | 1989-05-11 | Yamaichi Electric Mfg Co Ltd | Ic socket |
| JPH0636388B2 (en) * | 1988-03-08 | 1994-05-11 | 山一電機工業株式会社 | Positioning method for IC carrier mounted socket |
| US4824389A (en) * | 1988-04-26 | 1989-04-25 | Precision Connector Designs, Inc. | Socket for electronic component |
-
1990
- 1990-10-12 JP JP2274422A patent/JPH0668983B2/en not_active Expired - Fee Related
-
1991
- 1991-10-08 DE DE69106652T patent/DE69106652D1/en not_active Expired - Lifetime
- 1991-10-08 US US07/773,115 patent/US5154619A/en not_active Expired - Lifetime
- 1991-10-08 CA CA002053464A patent/CA2053464A1/en not_active Abandoned
- 1991-10-08 EP EP91309198A patent/EP0480668B1/en not_active Expired - Lifetime
- 1991-10-10 KR KR1019910017734A patent/KR920008997A/en not_active Application Discontinuation
-
1995
- 1995-02-21 SG SG30495A patent/SG30495G/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SG30495G (en) | 1995-08-18 |
| DE69106652D1 (en) | 1995-02-23 |
| EP0480668A1 (en) | 1992-04-15 |
| JPH0668983B2 (en) | 1994-08-31 |
| EP0480668B1 (en) | 1995-01-11 |
| KR920008997A (en) | 1992-05-28 |
| US5154619A (en) | 1992-10-13 |
| JPH04149980A (en) | 1992-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |