EP0689265A1 - Connexion électrique à faible force d'insertion - Google Patents

Connexion électrique à faible force d'insertion Download PDF

Info

Publication number
EP0689265A1
EP0689265A1 EP95304377A EP95304377A EP0689265A1 EP 0689265 A1 EP0689265 A1 EP 0689265A1 EP 95304377 A EP95304377 A EP 95304377A EP 95304377 A EP95304377 A EP 95304377A EP 0689265 A1 EP0689265 A1 EP 0689265A1
Authority
EP
European Patent Office
Prior art keywords
contact
pin
socket connector
pins
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
Application number
EP95304377A
Other languages
German (de)
English (en)
Other versions
EP0689265B1 (fr
Inventor
Keng Thai Giam
Kok Hong Ng
Martin Kok Soon Wong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Installation Products Inc
Original Assignee
Thomas and Betts Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomas and Betts Corp filed Critical Thomas and Betts Corp
Publication of EP0689265A1 publication Critical patent/EP0689265A1/fr
Application granted granted Critical
Publication of EP0689265B1 publication Critical patent/EP0689265B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter

Definitions

  • the invention relates to electrical connection apparatus and more particularly but not exclusively to pin grid array (hereinafter referred to by the usual term of art acronym PGA) sockets which are used for connection with, for example, central processing unit (CPU) chips which normally have in excess of 144 pins.
  • PGA pin grid array
  • a socket connector for connection to a plurality of pins, which socket connector has a plurality of socket contacts for engagement by the plurality of pins, each socket contact having a pair of contact arms, each arm having a contact point adjacent a free end thereof, the contact points of each contact being staggered such that, in use, a particular pin does not make initial contact with both the contact points of the associated contact simultaneously, and adjacent contacts being positionally staggered with respect to each other such that, in use, the associated pair of adjacent pins does not make initial contact simultaneously with more than one contact point.
  • the staggering of the contact points is preferably such that a first contact is made between a first pin of the adjacent pair and one contact point of the contact associated with the first pin, and the next contact is made between the second pin of the adjacent pair and one contact point of the contact associated with the second pin.
  • the third contact is preferably made between the first pin and the other contact point of the contact associated with the first pin, and the fourth contact is preferably between the second pin and the other contact point of the contact associated with the second pin.
  • Each contact arm preferably has an end portion extending from the contact point to the free end, which end portion lies obliquely to the direction of pin travel to ease the entry of a pin into the associated contact.
  • Each contact preferably has a base, the contact arms extending from the base in cantilever fashion.
  • Each contact may be formed from sheet material.
  • the bases of the contacts may be coplanar, and different contact point spacing from the base plane may be achieved by different lengths of the contact arms.
  • a CPU chip is illustrated at 10 and only a small portion is shown from which two pins 11, 12 extend. As discussed previously, a CPU chip has a large number of pins, typically more than 144 and, with further developments in chips, in excess of 200 pins.
  • Part of a pin grid array (GPA) socket is shown at 13, the socket 13 having a body portion 14 having contact recesses 15, 16 and pin engagement holes 17, 18. It will be appreciated that the number of contact recesses and engagement holes will correspond to the number of pins in the CPU chip.
  • GPS pin grid array
  • the contact recesses 15 and 16 are of different depth, the contact recess 16 being deeper than contact recess 15.
  • the contact recesses 15 and 16 locate contacts 19, 20 respectively. Again, it would be appreciated that the number of contacts will correspond to the number of pins to the CPU chip.
  • the contacts 19 and 20 have pins 21, 22, although it will be appreciated that other forms of electrical connection could be used.
  • each recess has a two height ceiling. This provides for accommodation of contacts 19 and 20, both of which have contact arms 23, 24 and 25, 26 respectively of different lengths.
  • the contact arms 23 and 24 are of bent metal stamped from a sheet (other way of producing the contacts are possible) and are formed with contact points 30, 31 respectively. Similarly, the contact arms 25 and 26 of the contact 16 are formed with contact points 32, 33 respectively. All four contact points 30, 31, 32 and 33 lie at different distances from upper pin engagement surface 35 of the body portion 14.
  • the configuration of the contacts and location of the contact points 30, 31, 32 and 33 are such that as the CPU chip is lowered into engagement with the socket 13, the pin 12 first makes contact with the contact point 32 of the contact 20. With further downward movement of the CPU chip, the pin 11 makes contact with the contact point 30 of the contact 19. Further downward movement of the CPU chip results in contact between the pin 12 and the contact point 33 of the contact 20 and, finally, the pin 11 makes contact with the contact point 31 of the contact 19. In this way, the insertion force of the CPU chip pins into the socket 13 is reduced to approximately a quarter of the force necessary for contacts in which all contact points are level, the greatest force being necessary at initial engagement of a pin with a contact point.
  • the contact sequence between the CPU chip pins and the contact points on the contact arms may be different.
  • the invention is not limited to engagement of pin grid arrays on CPU chips; indeed, the invention is applicable to any context in which insertion force is a problem in sockets for engagement with multi-pin male connectors.

Landscapes

  • Connecting Device With Holders (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Conductive Materials (AREA)
EP19950304377 1994-06-24 1995-06-22 Connexion électrique à faible force d'insertion Expired - Lifetime EP0689265B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9412713A GB2291279B (en) 1994-06-24 1994-06-24 Improvements in or relating to electrical connection apparatus
GB9412713 1994-06-24

Publications (2)

Publication Number Publication Date
EP0689265A1 true EP0689265A1 (fr) 1995-12-27
EP0689265B1 EP0689265B1 (fr) 1997-08-06

Family

ID=10757265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950304377 Expired - Lifetime EP0689265B1 (fr) 1994-06-24 1995-06-22 Connexion électrique à faible force d'insertion

Country Status (6)

Country Link
EP (1) EP0689265B1 (fr)
JP (1) JPH0878120A (fr)
CA (1) CA2152436C (fr)
DE (1) DE69500518T2 (fr)
ES (1) ES2107892T3 (fr)
GB (1) GB2291279B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273880A (zh) * 2018-09-25 2019-01-25 青岛科技大学 一种柔性电路板的电连接装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007250476A (ja) * 2006-03-17 2007-09-27 Espec Corp Ｉｃソケット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354063A2 (fr) * 1988-08-04 1990-02-07 Molex Incorporated Connecteur électrique du type à faible force d'insertion
EP0571105A1 (fr) * 1992-05-21 1993-11-24 Yamaichi Electronics Co., Ltd. Contact pour sockle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435832A1 (fr) * 1978-07-21 1980-04-04 Alsthom Cgee Dispositif de connexion electrique
JPS58208222A (ja) * 1982-05-28 1983-12-03 Japan Found Cancer 抗腫瘍剤効果増強剤
JPS6041342A (ja) * 1983-08-17 1985-03-05 Fujitsu Ltd クロツク選択制御方式
US4591230A (en) * 1984-06-29 1986-05-27 Frank Roldan Electrical connector receptacle
US4607907A (en) * 1984-08-24 1986-08-26 Burndy Corporation Electrical connector requiring low mating force
JPH0616412Y2 (ja) * 1989-07-12 1994-04-27 ホシデン株式会社 ジャック
US5004426A (en) * 1989-09-19 1991-04-02 Teradyne, Inc. Electrically connecting
US4993972A (en) * 1990-02-07 1991-02-19 Lin Yu C Multi-purpose PC board connector
JP2602385B2 (ja) * 1992-01-16 1997-04-23 矢崎総業株式会社 多極コネクタ
JP2672450B2 (ja) * 1993-06-30 1997-11-05 山一電機株式会社 電気接触子

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354063A2 (fr) * 1988-08-04 1990-02-07 Molex Incorporated Connecteur électrique du type à faible force d'insertion
EP0571105A1 (fr) * 1992-05-21 1993-11-24 Yamaichi Electronics Co., Ltd. Contact pour sockle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273880A (zh) * 2018-09-25 2019-01-25 青岛科技大学 一种柔性电路板的电连接装置

Also Published As

Publication number Publication date
CA2152436C (fr) 2006-08-15
EP0689265B1 (fr) 1997-08-06
CA2152436A1 (fr) 1995-12-25
DE69500518T2 (de) 1997-12-11
GB9412713D0 (en) 1994-09-28
JPH0878120A (ja) 1996-03-22
DE69500518D1 (de) 1997-09-11
GB2291279A (en) 1996-01-17
ES2107892T3 (es) 1997-12-01
GB2291279B (en) 1998-07-15

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