US3564487A - Contact member for electrical connector - Google Patents

Contact member for electrical connector Download PDF

Info

Publication number
US3564487A
US3564487A US796083A US3564487DA US3564487A US 3564487 A US3564487 A US 3564487A US 796083 A US796083 A US 796083A US 3564487D A US3564487D A US 3564487DA US 3564487 A US3564487 A US 3564487A
Authority
US
United States
Prior art keywords
spring
fingers
contact
sleeve
terminating
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.)
Expired - Lifetime
Application number
US796083A
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English (en)
Inventor
Harlan R Upstone
Bruce K Arnold
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
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 Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Application granted granted Critical
Publication of US3564487A publication Critical patent/US3564487A/en
Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • the disclosure relates to a socket contact for an electrical connector having an elongated contact body with rearwardly terminating means and having a tubular forward portion.
  • the tubular forward portion containing a forward opening longitudinal slot therein has spring contact fingers having their roots at the rear end of the slot.
  • a sleeve is provided above said fingers and secured prxi mate their roots thereof.
  • the terminating means, the spring fingers, and the sleeve means are each made of material which provides the desired performance parameter of that particular component.
  • the spring fingers utilize material which has good spring characteristics as well as maximum conductivity.
  • the terminating means may be formed of a material which is readily crimpable.
  • the invention relates in general to contact members for electrical connectors, and more particularly, to a socket contact having a terminal member, a spring member, and a tubular sleeve each made of materials which best matches the performance parameters needed for the particular component.
  • the prime purpose of prestressing the spring fingers in the above identified patent is to overcome the inherent disadvantages of having the spring fingers in a cantilever arrangement projecting free from a tubular base which results in maximum pin stress from outward flexing by a mating pin being applied proximate the root of the spring fingers. This results in relatively weak contacting force between the socket fingers and the mating pins, much less than the actual spring capability of the spring fin ers along their length.
  • the present invention allows selection of the material and finish for each segment of the connector which best matches the performance parameters of that particular component. Moreover, by using multi-piece construction for the contact body, it is possible to utilize material forms and manufacturing processes better suited to fabrication than those presently employed. Further, by handling and finishing the components of the connector as separate pieces prior to assembly, the problems attendant to finishing conventional socket connectors are greatly reduced.
  • the invention comprises a socket contact for an electrical connector having an elongated contact body with rearwardly terminating means and having a tubular forward portion.
  • the tubular forward portion containing a forwardly-opening longitudinal slot therein contains spring contact fingers having their roots at the rear end of the slot.
  • Sleeve means are provided above said fingers and secured proximate their roots.
  • the terminatin means, the spring fingers, and the sleeve means are each made of a metal which provides the desired performance parameters of the particular component.
  • FIG. 1 is an axial section, partly in elevation, illustrating the socket contact member of the prior art with a mating pin contact member positioned for insertion into the socket;
  • FIG. 2 depicts an axial section, partly in elevation, illustrating the socket contact member according to the present invention.
  • FIG. 3 shows an alternative arrangement for terminating the contact member of FIGS. 1 and 2.
  • FIG. 1 a prior art socket contact member 10 which is shown axially in spaced relationship with a mating pin contact member 12 which is adapted to be forcibly inserted into the forward end of the socket to complete an electrical circuit.
  • the socket contact includes an elongated body 14 having a front end 16 and a rear end 18.
  • the forward engaging contact portion 20 of the socket contact member 10 is of tubular construction having a forward opening bore 22 with a bevelled entrance ramp 24.
  • the tubular engaging portion is slotted longitudinally down the middle by a slot 26 which extends to the front end 16 and to a rearward end 28 of the slot so as to divide the engaging portion of the socket into a pair of diametrically opposed spring fingers or legs 30. These are pinched together to reduce the diameter of the entrance of the tube so that when the pin contact member 12 is inserted, it will flex the fingers 30 outwardly and the fingers will exert a spring contacting force against the pin.
  • the rear end 28 of the slot is disposed forward of the rear end 31 of bore 22.
  • Circumferentially engaged about the tubular forward portion 20 is a sleeve 32.
  • a rear end 34 of the sleeve 32 is disposed to the rear end of the slot 28 and is positioned against a forwardly facing shoulder 36 on the body.
  • the sleeve 32 extends forwardly beyond the slot end of the contact body and has an in-turned forward lip 38 which provides a rigid guide for the mating pin 12.
  • the contact body 14 has a tubular rearward terminating portion 40 adapted to receive a bared end of a wire 42 which is crimped therein.
  • a mounting collar 44 is formed on the contact portion 14.
  • the rearward portion of the sleeve 32 is tightly engaged over the annular portion of the socket tube immediately to the rear of the slot and against the contacting fingers approximate their roots, i.e. immediately adjacent to and extending somewhat forwardly of the rear end of the slot.
  • the circumscribed part of the socket tube is placed in hoop compression and the root portions of the spring contacting fingers are radially inwardly stressed substantially to the point of elastic limit.
  • the efiect of the prestressing by compression sleeve 32 is to greatly increase the spring characteristics of the contact material of the critical region proximate and adjacent to the spring fingers. With prestressing substantially to the elastic limit the spring characteristics are substantially doubled, which substantially doubles the spring force of the contact fingers against the mating pin contacting member. Further, when the spring fingers are flexed outwardly by a mating pin contact or by a test probe they will not approach their yield strength or elastic limit nearly so closely as they would if it were not for the prestressing of the compression sleeve 32.
  • the outer sleeve is made typically of a stainless steel or copper alloy.
  • the socket body 14 is made of a suitable conductive alloy such as nickel-copper which allows the fingers 30 to be springable while simultaneously allowing the terminating portion to be crimped to the wire conductor 42.
  • the tubular body 14 is a compromise between the spring characteristics and the crimp characteristics needed to provide the desired electrical contact.
  • a socket contact member 100 is made of three portions for mating with a pin contact member 112.
  • the socket contact 100 comprises a terminating member 113 having a tubular rearward terminating portion 114 attached to receive a bared end of a wire connector 116 which is crimped therein.
  • a mounting collar 118 is formed forward of the terminating portion 114.
  • a reduced diameter cylindrical member 122 is formed forwardly extending from the collar 118.
  • a spring member 130 is formed of a bore 132 and a bevelled entrance ramp 134 at its forward end.
  • the spring member 130 is slotted longitudinally down the middle by a slot 136 which extends from the front end of the member 130 at the bevelled entrance ramp to a rearward end 138 of the slot so as to divide the engaging portion of the spring member into a pair of diametrically opposed spring fingers 142.
  • the spring fingers 142 are pinched together as in the device of FIG. 1 to reduce the diameter at the entrance, so that when the pin contact member 112 is inserted it will flex the fingers 142 outwardly and the fingers will exert a spring contacting force against the pins.
  • the rear end of the spring member is slipped over the reduced diameter cylindrical member 122 and its rear end 144 abuts the forward face of the collar 118. Circumferentially surrounding the spring member. is a sleeve 146.
  • the spring member '130 may be brazed or soldered to the member 122 and to the collar 118, or may be retained by elastic forces generated by a tight fit or pressed on sleeve 146.
  • the sleeve 146 contains a rear end 148 which may be pressed, brazed or soldered to the terminating member 113, and to the rear portion of the spring member 130 in the vicinity of the cylindrically extending member 122.
  • the sleeve extends forwardly beyond the front end of the spring member 130 and contains an in-turned forward lip 152 that provides a rigid guide for the mating pin 112.
  • the terminating member 113 is normally made of a malleable copper alloy or other suitable conductive material which is crimpable about the conductor 116.
  • the outer sleeve 146 can be made of a material such as stainless steel or copper alloy as in the device of FIG. 1.
  • the spring member 130 is chosen of spring material having maximum conductivity such as beryllium copper, a Phosphor bronze alloy or a cadmium-copper alloy which combines the characteristics of good conductivity as well as having good mechanical spring.
  • a nickel copper alloy was utilized for the member 14 which had spr g characteristics and still was crimpable. However, such material was a compromise for both the crimping and the spring characteristics.
  • the device of FIG. 1 normally a nickel copper alloy was utilized for the member 14 which had spr g characteristics and still was crimpable. However, such material was a compromise for both the crimping and the spring characteristics. In the device of FIG.
  • the terminating member contains a terminating portion 154 which may be butt Welded to the conductor 156.
  • the terminating end portion would be a fiat ended post to which the conductor wire 158 of conductor 156 would be welded.
  • the terminating member material could then be chosen to have the desired characteristics necessary for a welded termination.
  • the multiple piece construction for the contact body allows the utilization of material forms and manufacturing processes better suitable to fabrication than those of a single contact body construction. By handling and finishing each of the components as separate pieces before assembly the problems attendant to finishing typical to conventional single body constructions are greatly reduced.
  • a socket contact for an electrical connector comprising: a contact body having rearward terminating means being made of a material which may readily be secured to a conductor; and a tubular spring member being made of a material having high conductivity and good spring characteristics and being formed of a hollow cylinder open at both ends and having a plurality of forwardly opening longitudinal slots extending from the forward end of said spring member to part way along its length to provide a plurality of forwardly extending contact spring fingers, said spring member being secured at its rear end to said rearward terminating means; the forward end of said terminating mens having a cylindrical appendage to fit contiguously to the rear internal surface of said spring member, said terminating means having a radial flange to fit contiguous to the rearward end of said spring member, said flange extending radially beyond the external surface of said spring member, and a cylindrical sleeve to fit contiguously to the external surface of said spring member, said sleeve having one end positioned contiguous to said flange; said

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
US796083A 1969-02-03 1969-02-03 Contact member for electrical connector Expired - Lifetime US3564487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79608369A 1969-02-03 1969-02-03

Publications (1)

Publication Number Publication Date
US3564487A true US3564487A (en) 1971-02-16

Family

ID=25167238

Family Applications (1)

Application Number Title Priority Date Filing Date
US796083A Expired - Lifetime US3564487A (en) 1969-02-03 1969-02-03 Contact member for electrical connector

Country Status (5)

Country Link
US (1) US3564487A (fr)
BE (1) BE745377A (fr)
DE (1) DE7003025U (fr)
FR (1) FR2031260A5 (fr)
GB (1) GB1241930A (fr)

Cited By (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862792A (en) * 1973-10-03 1975-01-28 Gte Sylvania Inc Electrical connector assembly
US4133599A (en) * 1976-07-12 1979-01-09 International Telephone & Telegraph Corp. Socket contact
EP0005602A1 (fr) * 1978-05-22 1979-11-28 AMP INCORPORATED (a New Jersey corporation) Douille terminale
DE2923876A1 (de) * 1978-06-16 1980-01-03 Itt Ind Gmbh Deutsche Steckverbinder
JPS5541684A (en) * 1978-06-16 1980-03-24 Itt Connector
US4209895A (en) * 1976-07-12 1980-07-01 International Telephone And Telegraph Corporation Method of making a socket contact
US4408821A (en) * 1979-07-09 1983-10-11 Amp Incorporated Connector for semi-rigid coaxial cable
EP0092471A1 (fr) * 1982-04-15 1983-10-26 The Bendix Corporation Contact à douille pour un connecteur électrique
US4431256A (en) * 1981-11-03 1984-02-14 The Bendix Corporation Split sleeve socket contact
EP0105766A1 (fr) * 1982-09-22 1984-04-18 Allied Corporation Douille pour connecteur électrique et sa méthode de fabrication
US4461530A (en) * 1982-09-20 1984-07-24 Bendix Corporation Socket contact for electrical connectors and method of manufacture
US4540231A (en) * 1981-10-05 1985-09-10 Amp Connector for semirigid coaxial cable
US4685761A (en) * 1982-03-31 1987-08-11 Amp Incorporated Electrical contact assembly and method of assembly
DE3606340A1 (de) * 1986-02-27 1987-09-03 Kostal Leopold Gmbh & Co Kg Elektrische steckkontaktbuchse
FR2596587A1 (fr) * 1986-03-26 1987-10-02 Allied Corp Contact femelle pour connecteur electrique
US4934964A (en) * 1987-08-03 1990-06-19 Souriau Et Cie Electric contact terminal
US5199910A (en) * 1991-12-23 1993-04-06 Gte Products Corporation Connector device
US5342226A (en) * 1993-06-21 1994-08-30 Electro-Wire Products, Inc. Female blade terminal
US5358433A (en) * 1992-06-09 1994-10-25 Framatome Connectors International Female electrical contact terminal for a connector
US5498838A (en) * 1993-09-16 1996-03-12 The Whitaker Corporation Modular electrical contact assemblies
US5632651A (en) * 1994-09-12 1997-05-27 John Mezzalingua Assoc. Inc. Radial compression type coaxial cable end connector
US5658175A (en) * 1995-10-05 1997-08-19 Itt Corporation One-piece hooded socket contact and method of producing same
EP1107378A1 (fr) * 1999-11-30 2001-06-13 Preci-Dip Durtal SA Pièce de contact pour un connecteur électrique
US6261134B1 (en) 1995-10-20 2001-07-17 Itt Manufacturing Enterprises, Inc. One-piece hooded socket contact and method of producing same
US20050003705A1 (en) * 2000-05-10 2005-01-06 Thomas & Betts International, Inc. Coaxial connector having detachable locking sleeve
US20050020136A1 (en) * 2003-07-23 2005-01-27 Johannes Richard A. Electrical connector contact
US20050255735A1 (en) * 2004-05-14 2005-11-17 Thomas & Betts International, Inc. Coaxial cable connector
US20060118593A1 (en) * 2004-12-08 2006-06-08 Apex Mfg. Co., Ltd. Stapler capable of cutting staple legs one after another
US20060148337A1 (en) * 2003-01-20 2006-07-06 Mark Wells Electrical connection device
US20060205272A1 (en) * 2005-03-11 2006-09-14 Thomas & Betts International, Inc. Coaxial connector with a cable gripping feature
US20060292926A1 (en) * 2005-06-27 2006-12-28 Chee Alexander B End Connector for Coaxial Cable
USD535259S1 (en) 2001-05-09 2007-01-16 Thomas & Betts International, Inc. Coaxial cable connector
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FR2395623A1 (fr) * 1977-12-28 1979-01-19 Gavard Jean Pierre Fiche femelle perfectionnee, pour circuits electroniques ou analoques
CA1196072A (fr) * 1982-03-31 1985-10-29 Amp Incorporated Contact electrique
FR2611317B1 (fr) * 1987-02-19 1991-03-29 Burel Robert Dispositif de connexion a embouts de cable male/femelle de forme ronde de securite
DE102012106741B4 (de) * 2012-07-25 2021-04-01 Harting Electric Gmbh & Co. Kg Kontaktelement

Cited By (231)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862792A (en) * 1973-10-03 1975-01-28 Gte Sylvania Inc Electrical connector assembly
US4209895A (en) * 1976-07-12 1980-07-01 International Telephone And Telegraph Corporation Method of making a socket contact
US4133599A (en) * 1976-07-12 1979-01-09 International Telephone & Telegraph Corp. Socket contact
EP0005602A1 (fr) * 1978-05-22 1979-11-28 AMP INCORPORATED (a New Jersey corporation) Douille terminale
DE2923876A1 (de) * 1978-06-16 1980-01-03 Itt Ind Gmbh Deutsche Steckverbinder
JPS5541684A (en) * 1978-06-16 1980-03-24 Itt Connector
US4408821A (en) * 1979-07-09 1983-10-11 Amp Incorporated Connector for semi-rigid coaxial cable
US4540231A (en) * 1981-10-05 1985-09-10 Amp Connector for semirigid coaxial cable
US4431256A (en) * 1981-11-03 1984-02-14 The Bendix Corporation Split sleeve socket contact
US4685761A (en) * 1982-03-31 1987-08-11 Amp Incorporated Electrical contact assembly and method of assembly
EP0092471A1 (fr) * 1982-04-15 1983-10-26 The Bendix Corporation Contact à douille pour un connecteur électrique
US4447110A (en) * 1982-04-15 1984-05-08 The Bendix Corporation Socket contact for an electrical connector
US4461530A (en) * 1982-09-20 1984-07-24 Bendix Corporation Socket contact for electrical connectors and method of manufacture
JPH0623173U (ja) * 1982-09-22 1994-03-25 ザ・ベンディクス・コーポレーション 電気コネクタ用ソケットコンタクト
EP0105766A1 (fr) * 1982-09-22 1984-04-18 Allied Corporation Douille pour connecteur électrique et sa méthode de fabrication
JPS5978479A (ja) * 1982-09-22 1984-05-07 ザ　ベンディクス　コ−ポレ−ション 電気コネクタ用ソケツトコンタクト
US4461531A (en) * 1982-09-22 1984-07-24 Bendix/Allied Corporation Socket contact for electrical connector and method of manufacture
DE3606340A1 (de) * 1986-02-27 1987-09-03 Kostal Leopold Gmbh & Co Kg Elektrische steckkontaktbuchse
FR2596587A1 (fr) * 1986-03-26 1987-10-02 Allied Corp Contact femelle pour connecteur electrique
US4934964A (en) * 1987-08-03 1990-06-19 Souriau Et Cie Electric contact terminal
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Also Published As

Publication number Publication date
BE745377A (fr) 1970-08-03
GB1241930A (en) 1971-08-04
DE7003025U (de) 1970-05-14
FR2031260A5 (fr) 1970-11-13

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