US3129050A - Electrical connectors - Google Patents

Electrical connectors Download PDF

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Publication number
US3129050A
US3129050A US61006A US6100660A US3129050A US 3129050 A US3129050 A US 3129050A US 61006 A US61006 A US 61006A US 6100660 A US6100660 A US 6100660A US 3129050 A US3129050 A US 3129050A
Authority
US
United States
Prior art keywords
socket
pin
contact
bore
diameter
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
US61006A
Other languages
English (en)
Inventor
Henry P Dupre
Glenn M Osborn
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.)
FCI USA LLC
Original Assignee
Burndy 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 Burndy Corp filed Critical Burndy Corp
Priority to US61006A priority Critical patent/US3129050A/en
Priority to FR874619A priority patent/FR1302198A/fr
Priority to GB35468/61A priority patent/GB942511A/en
Priority to DEB64236A priority patent/DE1198891B/de
Priority to DEB46734U priority patent/DE1936575U/de
Priority to BE608852A priority patent/BE608852A/fr
Application granted granted Critical
Publication of US3129050A publication Critical patent/US3129050A/en
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
    • H01R13/64—Means for preventing incorrect coupling
    • H01R13/642—Means for preventing incorrect coupling by position or shape of contact members
    • 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

  • Pin and socket type connectors are well known in the prior art, andare to be foundiin various :shapes and configurations.
  • the rudimentary connector ⁇ consists of a smooth, uniform diameter pin which is inserted into a mating, smooth, uniform diameter socket. Good electrical contact therebetween is dependent on a tight frictional fit between the pin and socket. Since close manufacturing tolerances are difiicult to obtain, it has become cus-4 tomary to make either the pin or the socket of resilient construction. While suchy an arrangement is practical, there is generally no definite, specific and invariable point of good electrical contact between the contacts. Rather there is a large intersurface area in which, depending on the exact surface configuration produced by the vagaries of manufacture, electrical contact might somewhere be made. This results in a variable and often high contact resistance between the pin andthe socket.
  • a common resilient socket variant is a tubular socket having an unbroken periphery at its pin receiving end, and a leaf spring formed out of 'a part of said socket wall by means of a transverse and then longitudinal saw cut. The leaf is then set so that it depends towards the center of the socket. When the pin is inserted into the socket it biases the leaf outwardly and is pressed thereby against the wall of the socket opposite the leaf.
  • Another common resilient socket variant is a tubular socket which is slit longitudinally at its pin receiving end to provide a plurality of resilient fingers.
  • the fingers are biasedv towards the center of the socket. When the pin is inserted into the socket it biases the fingers outwardly, the lingers thereby gripping the pin.
  • the leaf spring socket has a major advantage over the split finger socket.
  • An oversize pin or probe may be inserted into a split finger socket, spreading apart and permanently distorting the lingers.
  • the leaf spring socket has an unbroken periphery at its end which naturally prevents the entry of a grossly overdiameter pin, and thereby prevents permanent distortion of its leaf spring. This feature is commonly known as closed-entry.
  • a recent improvement to the split finger socket has been to provide an end cap or closed entry adapter which fits over the ends of the split fingers and has a central bore with an unbroken periphery. This adapter both limits the diameter of the pin which may be inserted therethrough, and the spreading out of the ends of the split fingers.
  • the inner diameter of the bead must be substantially that of the pin. Therefore, the inner diameter of the rest of 'the socket must be significantly greater vthan the pin.
  • An obvious expedient wouldy be to provide a separate closed entry adapter over the end of the socket to reduce the entrance diameter of the socket bore. This requires a separate part and anadditional assembly operation.
  • Another expedient would be to flange inwardly the end of the socket. This requires an independent manufacturing operation and often produces Aa burr which would scrape the surface of the vpin as it is inserted.
  • an object of this invention to lprovide a leafy spring socket having a contact bead, .and an integral closed entry feature.
  • Another object is to provide the abovementioned socket with its contact bead and integral closed entry feature in substantially the same manufacturing operation.
  • Still another object is to provide the kabovementioned socket with an integralclosed entry feature which has no burr which will interfere with an inserted pin.
  • Yet another object is to provide the abovementioned socket with an independent pin cleaningl pressure means, and anindependent pin contacting pressure means.
  • a feature-of thisinvention Vis a leaf spring socket having a first internall annular bead on the end ofI its springv and adjacent socket and a second annular bead between the end of the socket and the end of the leaf spring.
  • FIG. 1 is a top view of a spring leaf socket embodying this invention
  • FIG. 2 is a front View in cross-section of the socket of FIG. l;
  • FIG. 3 is a top view of second embodiment of this invention.
  • FIG. 4 is a front view in cross-section of the embodiment of FIG. 3.
  • a spring leaf socket type contact 2 having a pin receiving socket 4 and a conductor receiving socket 6.
  • the conductor receiving socket may include a peepehole 8, a conductor socket 10 and an insulation shroud 12.
  • the conductor (not shown) may be secured to the socket by any suitable means, e.g. crimping or soldering.
  • the pin receiving socket 4 has a bore 14 and may have a necked portion 16 adapted to receive a locking spring (not shown) to cooperate with contact shoulder 18 in locking the contact into its housing (not shown).
  • a first annular bead 20 is rolled into the socket periphery to provide a fixed and relatively small pin-contacting area. The inner diameter of this bead is substantially equal to the diameter of the contact pin 21 (shown in dot-dash lines in FIGURE 2) which the socket is to receive.
  • a second annular bead 22 is rolled into the socket periphery adjacent the end of the socket. The inner diameter of this bead is also substantially equal to the diameter of the Contact pin; and provides the closed entry feature and, if desired, a second relatively small pin-contacting area. A pin or probe greater than the inner diameter of the second bead can not be forced beyond this unbroken peripherial bead into the socket.
  • the spring leaf 24 of the socket is formed by transverse 26 and longitudinal 28 saw cuts into the medial portion of the socket.
  • the free end 30 of the leaf may be given a permanent set towards the center of the bore.
  • the two rolls provide smooth, burr free surfaces to contact the inserted contact pin Without damage thereto.
  • a burr caused by the sawing of the spring leaf or cutting the end of the socket will be spaced away from the contact pin. If it is desired, these burrs may be removed by a suitable electro-chemical treamtent.
  • the second bead 22 besides providing the closed entry feature, rnay be formed to a diameter equal to that of the inserted pin.
  • the roll will then apply a high pressure to the pin as it is inserted, cleaning the surface of the pin as it passes thereunder.
  • the first bead 20 will provide a high pressure, small area contact to the pin, ensuring a uniform, low resistance contact therewith.
  • FIGS. 3 and 4 A second embodiment of the invention is shown in FIGS. 3 and 4.
  • the leaf spring socket contact 102 has a iirst annular bead 120 having an inner diameter less than the diameter of the contact pin 121 (shown in dot dash lines in FIGURE 4) to be inserted.
  • a second annular bead 122 having an inner diameter substantially equal to the contact pin is formed at the socket end to provide the closed entry feature.
  • a third annular bead 123 having an inner diameter substantially equal to the contact pin is formed in the socket proximal the xed end of the leaf.
  • the leaf 124 is cut out of the socket wall and set towards the bore. This provides a three point longitudinal contact between the portion of the rst bead on the free end of the leaf, and the opposed areas of the second andy third beads, avoiding any wiggle of the pin in the socket.
  • a connector comprising a socket contact and a mating pin contact having a given diameter; said socket having a bore of diameter greater than said given diameter including an open end adapted to receive said pin contact; said bore including an unbroken annulus located substantially at the bore open end, and a longitudinally disposed leaf spring formed into and from a portion of the wall of said socket and depending into substantially the medial length of said bore; a rst internal annular bead formed in a section of said bore including said unbroken annulus; a second internal annular bead formed in a section of said bore including said leaf spring; the inner diameter of said rst and second beads being substantially equal to the diameter of said pin Contact.
  • u"ZJ connector according to clairrrl further including a third annular bead in said bore longitudinally spaced from said second bead on the side thereof remote from said first bead.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US61006A 1960-10-06 1960-10-06 Electrical connectors Expired - Lifetime US3129050A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US61006A US3129050A (en) 1960-10-06 1960-10-06 Electrical connectors
FR874619A FR1302198A (fr) 1960-10-06 1961-09-29 Connecteurs électriques
GB35468/61A GB942511A (en) 1960-10-06 1961-10-02 Electrical connectors
DEB64236A DE1198891B (de) 1960-10-06 1961-10-04 Steckbuchse fuer elektrische Steckerverbindungen
DEB46734U DE1936575U (de) 1960-10-06 1961-10-04 Elektrische steckerverbindung.
BE608852A BE608852A (fr) 1960-10-06 1961-10-05 Connecteur électrique.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61006A US3129050A (en) 1960-10-06 1960-10-06 Electrical connectors

Publications (1)

Publication Number Publication Date
US3129050A true US3129050A (en) 1964-04-14

Family

ID=22033060

Family Applications (1)

Application Number Title Priority Date Filing Date
US61006A Expired - Lifetime US3129050A (en) 1960-10-06 1960-10-06 Electrical connectors

Country Status (5)

Country Link
US (1) US3129050A (fr)
BE (1) BE608852A (fr)
DE (2) DE1198891B (fr)
FR (1) FR1302198A (fr)
GB (1) GB942511A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090035975A1 (en) * 2007-08-03 2009-02-05 Smk Corporation Connector and connector terminal construction
WO2019206784A1 (fr) * 2018-04-24 2019-10-31 Stäubli Electrical Connectors Ag Corps de douille
US12119581B2 (en) 2019-12-16 2024-10-15 Harting Electric Stiftung & Co. Kg Socket contact for plug connectors

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5688273A (en) * 1979-12-18 1981-07-17 Ibm Electric connector and socket
GB2148057B (en) * 1983-10-13 1987-06-17 Roy Wellesley Davies Improvements relating to cable connectors
FR2596587A1 (fr) * 1986-03-26 1987-10-02 Allied Corp Contact femelle pour connecteur electrique
JP3412738B2 (ja) * 1996-10-11 2003-06-03 矢崎総業株式会社 大電流用雌端子の形成方法
DE20008846U1 (de) 2000-05-17 2000-08-03 Harting Kgaa Kontaktelement

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2004550A (en) * 1932-07-30 1935-06-11 Francois C Bradley Electrical connecter
GB433622A (en) * 1934-02-17 1935-08-19 Charles Reginald Cook Improvements in and relating to electric contacts
US2346831A (en) * 1943-06-15 1944-04-18 H A Douglas Mfg Co Electrical connection means
GB561037A (en) * 1942-12-10 1944-05-02 Charles Croften And Company En Improvements relating to the electrical plug couplings
US2443513A (en) * 1944-04-28 1948-06-15 Quackenbush Edward Clarke Electrical contact socket
US2455324A (en) * 1942-10-14 1948-11-30 United Carr Fastener Corp Holder for thermionic tubes
US2677116A (en) * 1950-03-21 1954-04-27 Hugh H Eby Inc Electronic tube socket
US2781498A (en) * 1953-11-19 1957-02-12 Clande M Maly Retaining means for electrical plug and receptacle assemblies
FR1137079A (fr) * 1955-11-25 1957-05-23 Equip Pour L Automobile Soc Ge Dispositif de raccordement électrique
FR69426E (fr) * 1956-02-23 1958-11-06 Equip Pour L Automobile Soc Ge Dispositif de raccordement électrique
FR1184311A (fr) * 1957-10-14 1959-07-20 Realisations Mecaniques Soc Et Perfectionnements aux fiches de contact électriques
US2942231A (en) * 1955-11-04 1960-06-21 Burndy Corp Socket connector
US2992403A (en) * 1957-04-01 1961-07-11 Grayhill Electrical jack

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE429869C (de) * 1926-06-04 Sigwart Ruppel Dipl Ing Gewellte Steckerhuelse
GB327553A (en) * 1929-03-19 1930-04-10 A P Lundberg And Sons Ltd Improvements in or in connection with the contact tubes of electrical connectors, wall sockets and the like
GB413046A (en) * 1933-02-09 1934-07-12 Louis Henry Reid Improvements in or connected with sockets used for electrical connections
GB437546A (en) * 1934-07-31 1935-10-31 Louis Henry Reid Improvements in or connected with sockets used for electrical connections

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2004550A (en) * 1932-07-30 1935-06-11 Francois C Bradley Electrical connecter
GB433622A (en) * 1934-02-17 1935-08-19 Charles Reginald Cook Improvements in and relating to electric contacts
US2455324A (en) * 1942-10-14 1948-11-30 United Carr Fastener Corp Holder for thermionic tubes
GB561037A (en) * 1942-12-10 1944-05-02 Charles Croften And Company En Improvements relating to the electrical plug couplings
US2346831A (en) * 1943-06-15 1944-04-18 H A Douglas Mfg Co Electrical connection means
US2443513A (en) * 1944-04-28 1948-06-15 Quackenbush Edward Clarke Electrical contact socket
US2677116A (en) * 1950-03-21 1954-04-27 Hugh H Eby Inc Electronic tube socket
US2781498A (en) * 1953-11-19 1957-02-12 Clande M Maly Retaining means for electrical plug and receptacle assemblies
US2942231A (en) * 1955-11-04 1960-06-21 Burndy Corp Socket connector
FR1137079A (fr) * 1955-11-25 1957-05-23 Equip Pour L Automobile Soc Ge Dispositif de raccordement électrique
FR69426E (fr) * 1956-02-23 1958-11-06 Equip Pour L Automobile Soc Ge Dispositif de raccordement électrique
US2992403A (en) * 1957-04-01 1961-07-11 Grayhill Electrical jack
FR1184311A (fr) * 1957-10-14 1959-07-20 Realisations Mecaniques Soc Et Perfectionnements aux fiches de contact électriques

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090035975A1 (en) * 2007-08-03 2009-02-05 Smk Corporation Connector and connector terminal construction
WO2019206784A1 (fr) * 2018-04-24 2019-10-31 Stäubli Electrical Connectors Ag Corps de douille
CN112119541A (zh) * 2018-04-24 2020-12-22 史陶比尔电子连接器股份公司 插座体
US11342701B2 (en) * 2018-04-24 2022-05-24 Stäubli Electrical Connectors Ag Socket body
CN112119541B (zh) * 2018-04-24 2022-07-08 史陶比尔电子连接器股份公司 插座体
US12119581B2 (en) 2019-12-16 2024-10-15 Harting Electric Stiftung & Co. Kg Socket contact for plug connectors

Also Published As

Publication number Publication date
DE1936575U (de) 1966-04-14
BE608852A (fr) 1962-04-05
DE1198891B (de) 1965-08-19
GB942511A (en) 1963-11-20
FR1302198A (fr) 1962-08-24

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