US20100190370A1 - Ic socket with offset cam capable of preventing warpage of cover - Google Patents
Ic socket with offset cam capable of preventing warpage of cover Download PDFInfo
- Publication number
- US20100190370A1 US20100190370A1 US12/383,384 US38338409A US2010190370A1 US 20100190370 A1 US20100190370 A1 US 20100190370A1 US 38338409 A US38338409 A US 38338409A US 2010190370 A1 US2010190370 A1 US 2010190370A1
- Authority
- US
- United States
- Prior art keywords
- cover
- base
- cam
- back direction
- socket
- 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.)
- Granted
Links
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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
- H05K7/1053—Plug-in assemblages of components, e.g. IC sockets having interior leads
- H05K7/1061—Plug-in assemblages of components, e.g. IC sockets having interior leads co-operating by abutting
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connecting Device With Holders (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
- The present invention relates to an IC socket, and more particularly to a ZIF (Zero Insertion Force) IC socket for receiving an IC package having a plurality of pins extending downwardly.
- IC sockets are widely used in the electronic transmitting field to interconnect two separate electronic components, i.e. an IC package and a motherboard, so as to establish electrical connection therebetween. One type of the IC sockets is designed to receive an IC package for zero insertion force, which generally includes a base having an array of receiving holes for receiving a plurality of terminals, a cover mounted upon the base for carrying the IC package, and a cam mechanism provided for actuating the cover to slide with respect to the base so as to establish physical and electrical connection between the terminals of the connector and the pins of the IC package.
- U.S. Patent application Pub. No. 20080268664 filed by Zhan-Jun Xu etc. discloses a conventional ZIF IC socket including a base having a number of receiving holes, a number of terminals received in the receiving holes respectively, a cover mounted upon the base and capable of sliding with respect to the base, and a driving member disposed between the base and the cover. The cover has a plurality of through holes corresponding to the receiving holes of the base to allow the pins of the IC package to insert into the through holes and then make contact with the terminals retained in the receiving holes.
- The driving member is a cam structure and is located at a head section of the cover. A pushing force is provided by the cam as it rotates to urge the cover to move. Simultaneously, another friction force is produced between the cam and the cover in a direction vertical to the direction along which the cover moves. This friction force may raise a torque which is likely to cause warpage of the cover and is thereby harmful for connection between the IC package and the IC socket.
- Thus, there is a need to provide a new IC socket that overcomes the above-mentioned problems.
- It is therefore the object of the present invention to provide an IC socket having an improved cam mechanism and being thereby prevented from warpage.
- In accordance with the present invention, an IC socket for receiving an IC package having a plurality of pins extending downwardly includes a base, a plurality of terminals received in the base, a cover mounted upon the base, and a cam. The cover includes a carrying section for carrying the IC package and a cam-receiving section. The carrying section forms a plurality of through holes for insertion of the pins of the IC package. The cam is disposed at the cam-receiving section for actuating the cover to move with respect to the base in a first direction. The cam is offset from a central line of the carrying section which extends along the first direction.
- Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is an assembled, perspective view of an IC socket in accordance with a preferred embodiment of the present invention; -
FIG. 2 is an exploded, perspective view of the IC socket shown inFIG. 1 ; -
FIG. 3 is an exploded, perspective view of the IC socket shown inFIG. 1 , taken from another view. -
FIG. 4 is a top view of the IC socket shown inFIG. 1 ; and -
FIG. 5 is perspective view of a cam of the IC socket shown inFIG. 1 . - Referring to
FIGS. 1-3 , anIC socket 1 in accordance with a preferred embodiment of the present invention is used for receiving an IC package (not shown) having a plurality of pins extending downwardly. TheIC socket 1 includes abase 2, a plurality ofterminals 7 received in thebase 2, acover 5 mounted upon thebase 2, and acam 6 disposed between thecover 5 and thebase 2 for actuating thecover 5 to move with respect to thebase 2. - The
base 2 includes a cam-positioning section 21 and a terminal-receivingsection 20 forming a plurality of receivingholes 200 for mounting theterminals 7. Thecover 5 has a shape similar to that of thebase 2 and includes acarrying section 50 for carrying the IC package and a cam-receivingsection 51. The carryingsection 50 forms a plurality of throughholes 500 for insertion of the pins of the IC package. The cam-receivingsection 51 has afirst recess 511 at one surface thereof close to thebase 2. Anaccommodating hole 510 is formed in therecess 511 and extends through thecover 5 in an upright direction. The cam-positioning section 21 has asecond recess 210 at one surface thereof close to thecover 5 and anellipse opening 211 is formed in thesecond recess 210 to extend through thebase 2 in the upright direction. Thecover 5 further includes a pair ofside walls 501 extending downwardly at two lateral edges (not labeled) thereof to clip corresponding edges (not labeled) of thebase 2 and thereby provides guiding to the movement of thecover 5. The carryingsection 50 has asmooth surface 502 that located at the center of the carryingportion 50. The smooth surface is not configured with throughholes 500. - The
first recess 511 of thecover 5 receives a strengtheningmember 4 formed with adriving hole 40. Similarly, thesecond recess 210 of thebase 2 receives astiffener 3 formed with anellipse positioning hole 30. - Particularly referring to
FIG. 4 andFIG. 5 , thecam 6 is made of metal and is disposed at the cam-receivingsection 51 for actuating thecover 5 to move with respect to thebase 2 in a first direction A. Thecam 6 consists of four columns stacked with other, of which the diameters decrease gradually, and taken from up-to-down view, they are respectively ahead portion 61, adriving portion 62, apositioning portion 63 and a fixedend 64. Thehead portion 61 is received in theaccommodating hole 510 of the cam-receivingsection 51 and has aslot 611 for engaging with a tool as a screw driver (not shown) to rotate thecam 6. Thedriving portion 62 is received in thedriving hole 40 of the strengtheningmember 4 so as to actuate thecover 5. Thepositioning portion 63 is located both in theellipse positioning hole 30 of thestiffener 3 and the ellipse opening 211 of thebase 2 to make sure thecam 6 is non-movable in the first direction A. The fixedend 64 extends out of the bottom of thebase 2 to combine with aretaining member 8 so as to prevent thecam 6 from dropping away from theIC socket 1. Thehead portion 61 and thedriving portion 62 share a same axis, and thepositioning portion 63 and the fixedend 64 share a same axis. The two axises are offset from each other. The perimeters of thepositioning portion 63 and thedriving portion 62 are tangent. - The
carrying section 50 of thecover 5 has a substantial rectangular shape and defines a central line CL extending along the first direction A and across thesmooth surface 502. All of theaccommodating hole 510 of the cam-receivingsection 51, thedriving hole 40 of the strengtheningmember 4, and thepositioning hole 30 are offset from the central line CL. Due to offset configuration of thecam 6, the connecting line (not labeled) between thedriving portion 62 and a substantial central portion of thecarrying section 50 is deflecting a certain angle with the first direction A. - Particularly referring to
FIG. 4 , when thecover 5 is in an open position, the throughholes 500 of thecover 5 are corresponding with theterminals 7, respectively. Assemble the IC package onto thecarrying section 50 of thecover 5 with the pins passing through the throughholes 500 and then arriving adjacent theterminals 7, respectively. When rotates thecam 6 clockwise, thecover 5 moves from the open position to a closed position along the first direction A. Because thepositioning portion 63 and thedriving portion 62 have different diameters and the axises thereof are not in a same line, and also because thepositioning portion 63 is limited inpositioning hole 30 and is not movable in the first direction A, thedriving portion 62 engages the strengtheningmember 4 and thereby able to actuate thecover 5 to move along the first direction A. ‘F’ labeled inFIG. 4 is supposed to represent the pushing force exerted on thecover 5 by thedriving portion 62, and ‘f’ to represent the friction force therebetween. Respectively, the pushing force ‘F’ is along the first direction A and the friction force ‘f’ is along a second direction B vertical to the first direction A. A torque is induced by the friction force ‘f’ and makes thecover 5 have a trend to rotate anticlockwise. Since the direction of the pushing force ‘F’ doesn't pass through the center of thecover 5 and thereby also induces another torque making thecover 5 have a trend to rotate clockwise. To a certain extent, the torques induced by the pushing force ‘F’ and the friction force ‘f’ offset with each other and thereby efficiently decrease the warpage of thecover 5. Since thepositioning portion 62 is only able to move along with thecover 5 in the first direction A, thepositioning portion 63 has to shift a proper distance along the second direction B. Theellipse positioning holes 30 just provides the space for movement of thepositioning portion 63 in the second direction B. - When the
cover 5 is in the closed position, the pins of the IC package are contacting with theterminals 7, respectively. During this process of shifting thecover 5 from the closed position to the open position, the corresponding pushing force and the friction force exerted on thecover 5 by thedriving portion 62 are respectively reverse to those in the fore-described process, in which thecover 5 is shifted from the open position to the closed position. Obviously the torques induced by the pushing force and the friction force offset with each other again and thereby efficiently decrease the warpage of thecover 5. - A distance ‘s’ is introduced to represent the distance between driving
portion 62 of thecam 6 and the central line CL, and ‘d’ to represent the distance between the drivingportion 62 and the center of the carryingsection 50 along the direction A. Then the value of ‘s’ depends on the pushing force ‘F’, the friction force ‘f’ as well as the distance ‘d’. That is, the distance ‘s’ is directly proportional to distance ‘d’ and the friction force ‘f’, and is inversely proportional to the pushing force ‘F’. - Although the present invention has been described with reference to particular embodiments, it is not to be construed as being limited thereto. Various alterations and modifications can be made to the embodiments without in any way departing from the scope or spirit of the present invention as defined in the appended claims.
Claims (5)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW98200994 | 2009-01-20 | ||
TW098200994U TWM363131U (en) | 2009-01-20 | 2009-01-20 | Electrical connector |
TW98200994U | 2009-01-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20100190370A1 true US20100190370A1 (en) | 2010-07-29 |
US7771219B1 US7771219B1 (en) | 2010-08-10 |
Family
ID=42354508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/383,384 Expired - Fee Related US7771219B1 (en) | 2009-01-20 | 2009-03-24 | IC socket with offset cam capable of preventing warpage of cover |
Country Status (2)
Country | Link |
---|---|
US (1) | US7771219B1 (en) |
TW (1) | TWM363131U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10855029B2 (en) * | 2018-12-10 | 2020-12-01 | Lotes Co., Ltd | Electrical connector assembly |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201845926U (en) * | 2010-07-13 | 2011-05-25 | 番禺得意精密电子工业有限公司 | Zero-insertion-force electric connector |
CN201781097U (en) * | 2010-07-22 | 2011-03-30 | 番禺得意精密电子工业有限公司 | Electric connector |
Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5100332A (en) * | 1989-12-28 | 1992-03-31 | Yamaichi Electric Mfg. Co., Ltd. | IC socket |
US6071140A (en) * | 1999-04-20 | 2000-06-06 | Hon Hai Precision Ind. Co., Ltd. | Socket connector |
US6231366B1 (en) * | 1999-06-25 | 2001-05-15 | Jon Hai Precision Ind. Co., Ltd. | Single-point driving mechanism of a ZIF PGA socket and the socket using the same |
US6296507B1 (en) * | 2000-01-28 | 2001-10-02 | Hon Hai Precision Ind. Co., Ltd. | Electrical socket |
US6338640B1 (en) * | 2001-09-12 | 2002-01-15 | Hon Hai Precision Ind. Co., Ltd. | ZIF mobile socket |
US6450827B1 (en) * | 2001-11-13 | 2002-09-17 | Hon Hai Precision Ind. Co., Ltd. | Socket having mating indicator |
US6450825B1 (en) * | 2001-08-10 | 2002-09-17 | Hon Hai Precision Ind. Co., Ltd. | ZIF socket with indicator mechanism |
US6609926B1 (en) * | 2002-04-30 | 2003-08-26 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector with anti-rotation mechanism |
US6669500B1 (en) * | 2002-08-02 | 2003-12-30 | Chia Tse Terminal Industry Co., Ltd. | Central processing unit socket assembly |
US6716049B1 (en) * | 2003-04-28 | 2004-04-06 | Hon Hai Precision Ind. Co., Ltd. | IC socket with bearing springs |
US6846190B2 (en) * | 2001-04-25 | 2005-01-25 | Tyco Electronics Amp K.K. | IC socket and gripping sheet used in the same |
US20050186809A1 (en) * | 2004-02-20 | 2005-08-25 | Jinfeng Lei | Socket connector having keying means |
US20050215094A1 (en) * | 2004-03-26 | 2005-09-29 | Hon Hai Precision Ind. Co., Ltd. | Zero-insertion-force connector |
US6960095B2 (en) * | 2001-04-25 | 2005-11-01 | Molex Incorporated | Pin grid array socket with kickback force resisting slide plate |
US7023685B2 (en) * | 2002-10-30 | 2006-04-04 | Matsushita Electric Industrial Co., Ltd. | Sheet capacitor, IC socket using the same, and manufacturing method of sheet capacitor |
US7056140B1 (en) * | 2005-04-15 | 2006-06-06 | Starlink Electronics Corp. | Zero-insertion-force connector structure |
US7070437B1 (en) * | 2005-11-02 | 2006-07-04 | Huang-Chou Huang | CPU socket with guiding slots and guiding bosses to ensure smooth movement of the cover relative to the base |
US7114978B2 (en) * | 2004-02-20 | 2006-10-03 | Hon Hai Precision Ind. Co., Ltd | Socket connector having structure for preventing distortion |
US7261571B2 (en) * | 2005-08-30 | 2007-08-28 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector |
US20080108239A1 (en) * | 2006-11-03 | 2008-05-08 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector with actuating mechanism |
US7371101B2 (en) * | 2005-08-15 | 2008-05-13 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector |
US20080280473A1 (en) * | 2007-05-07 | 2008-11-13 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector having an improved protecting mechanism |
US7563120B1 (en) * | 2008-01-23 | 2009-07-21 | Lotes Co., Ltd. | Electrical connector |
US7588453B2 (en) * | 2007-09-10 | 2009-09-15 | Hon Hai Precision Ind. Co., Ltd. | Zero insertion force connector with improved driving device |
US7604495B2 (en) * | 2007-05-07 | 2009-10-20 | Hon Hai Precision Ind. Co., Ltd | Zero insertion force connector with improved driving device |
US7607932B1 (en) * | 2008-10-14 | 2009-10-27 | Hon Hai Precision Ind. Co., Ltd. | Socket having two cams |
-
2009
- 2009-01-20 TW TW098200994U patent/TWM363131U/en not_active IP Right Cessation
- 2009-03-24 US US12/383,384 patent/US7771219B1/en not_active Expired - Fee Related
Patent Citations (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5100332A (en) * | 1989-12-28 | 1992-03-31 | Yamaichi Electric Mfg. Co., Ltd. | IC socket |
US6071140A (en) * | 1999-04-20 | 2000-06-06 | Hon Hai Precision Ind. Co., Ltd. | Socket connector |
US6231366B1 (en) * | 1999-06-25 | 2001-05-15 | Jon Hai Precision Ind. Co., Ltd. | Single-point driving mechanism of a ZIF PGA socket and the socket using the same |
US6296507B1 (en) * | 2000-01-28 | 2001-10-02 | Hon Hai Precision Ind. Co., Ltd. | Electrical socket |
US6960095B2 (en) * | 2001-04-25 | 2005-11-01 | Molex Incorporated | Pin grid array socket with kickback force resisting slide plate |
US6846190B2 (en) * | 2001-04-25 | 2005-01-25 | Tyco Electronics Amp K.K. | IC socket and gripping sheet used in the same |
US6450825B1 (en) * | 2001-08-10 | 2002-09-17 | Hon Hai Precision Ind. Co., Ltd. | ZIF socket with indicator mechanism |
US6338640B1 (en) * | 2001-09-12 | 2002-01-15 | Hon Hai Precision Ind. Co., Ltd. | ZIF mobile socket |
US6450827B1 (en) * | 2001-11-13 | 2002-09-17 | Hon Hai Precision Ind. Co., Ltd. | Socket having mating indicator |
US6609926B1 (en) * | 2002-04-30 | 2003-08-26 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector with anti-rotation mechanism |
US6669500B1 (en) * | 2002-08-02 | 2003-12-30 | Chia Tse Terminal Industry Co., Ltd. | Central processing unit socket assembly |
US7023685B2 (en) * | 2002-10-30 | 2006-04-04 | Matsushita Electric Industrial Co., Ltd. | Sheet capacitor, IC socket using the same, and manufacturing method of sheet capacitor |
US6716049B1 (en) * | 2003-04-28 | 2004-04-06 | Hon Hai Precision Ind. Co., Ltd. | IC socket with bearing springs |
US20050186809A1 (en) * | 2004-02-20 | 2005-08-25 | Jinfeng Lei | Socket connector having keying means |
US7052302B2 (en) * | 2004-02-20 | 2006-05-30 | Hon Hai Precision Ind. Co., Ltd. | Socket connector having keying means |
US7114978B2 (en) * | 2004-02-20 | 2006-10-03 | Hon Hai Precision Ind. Co., Ltd | Socket connector having structure for preventing distortion |
US20050215094A1 (en) * | 2004-03-26 | 2005-09-29 | Hon Hai Precision Ind. Co., Ltd. | Zero-insertion-force connector |
US7056140B1 (en) * | 2005-04-15 | 2006-06-06 | Starlink Electronics Corp. | Zero-insertion-force connector structure |
US7371101B2 (en) * | 2005-08-15 | 2008-05-13 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector |
US7261571B2 (en) * | 2005-08-30 | 2007-08-28 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector |
US7070437B1 (en) * | 2005-11-02 | 2006-07-04 | Huang-Chou Huang | CPU socket with guiding slots and guiding bosses to ensure smooth movement of the cover relative to the base |
US20080108239A1 (en) * | 2006-11-03 | 2008-05-08 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector with actuating mechanism |
US20080280473A1 (en) * | 2007-05-07 | 2008-11-13 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector having an improved protecting mechanism |
US7473122B2 (en) * | 2007-05-07 | 2009-01-06 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector having an improved protecting mechanism |
US7604495B2 (en) * | 2007-05-07 | 2009-10-20 | Hon Hai Precision Ind. Co., Ltd | Zero insertion force connector with improved driving device |
US7588453B2 (en) * | 2007-09-10 | 2009-09-15 | Hon Hai Precision Ind. Co., Ltd. | Zero insertion force connector with improved driving device |
US7563120B1 (en) * | 2008-01-23 | 2009-07-21 | Lotes Co., Ltd. | Electrical connector |
US7607932B1 (en) * | 2008-10-14 | 2009-10-27 | Hon Hai Precision Ind. Co., Ltd. | Socket having two cams |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10855029B2 (en) * | 2018-12-10 | 2020-12-01 | Lotes Co., Ltd | Electrical connector assembly |
Also Published As
Publication number | Publication date |
---|---|
US7771219B1 (en) | 2010-08-10 |
TWM363131U (en) | 2009-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HON HAI PRECISION IND. CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SZU, MING-LUN;CHENG, CHIH-PI;CHIEN, CHENG-CHING;REEL/FRAME:022489/0324 Effective date: 20090319 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.) |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20180810 |