US2816275A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US2816275A
US2816275A US400996A US40099653A US2816275A US 2816275 A US2816275 A US 2816275A US 400996 A US400996 A US 400996A US 40099653 A US40099653 A US 40099653A US 2816275 A US2816275 A US 2816275A
Authority
US
United States
Prior art keywords
pin
taper
receptacle
connector
ferrule
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
US400996A
Other languages
English (en)
Inventor
Kemper M Hammell
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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
Priority to BE534477D priority Critical patent/BE534477A/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US400996A priority patent/US2816275A/en
Priority to GB33918/54A priority patent/GB799598A/en
Priority to FR1114700D priority patent/FR1114700A/fr
Priority to DEA6499U priority patent/DE1761263U/de
Priority to DEA21817A priority patent/DE1047279B/de
Priority to CH336105D priority patent/CH336105A/de
Priority to JP707360U priority patent/JPS4032615Y1/ja
Application granted granted Critical
Publication of US2816275A publication Critical patent/US2816275A/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
    • H01R13/02—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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/415—Securing in non-demountable manner, e.g. moulding, riveting by permanent deformation of contact member
    • 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
    • H01R31/02—Intermediate parts for distributing energy to two or more circuits in parallel, e.g. splitter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing

Definitions

  • This invention relates to self-locking electrical terminals and particularly to taper pins and/or tabs of small size made from sheet metal.
  • Figure 1 shows a perspective view of a taper pin connector embodying the present invention, in operative rela tion to a tapered receptacle shown in section;
  • Figure 2 is an exploded and enlarged perspective view of a fiat taper pin connector and a taper receptacle for the connector;
  • Figure 3 is a section of insulation panel having a taper eyelet mounted therein for the reception of a connector of the type shown in Figure 1;
  • Figure 4 is a sectional perspective view showing a plurality of tubular sheet metal receptacles for taper pins suitably mounted in an insulation block;
  • Figure 5 shows the end view of a tubular receptacle
  • Figure 6 is a plan view of a portion of metal strip comprising a plurality of taper receptacles arranged in ladder formation;
  • Figure 7 is a side view in elevation of the receptacle of Figures 4 and 5 receiving therein the taper pin connector of Figure 1.
  • the connector comprises a taper pin portion 1 and a ferrule portion 2 connected to the base of the taper pin by a neck portion 3 formed as an out wardly projecting bead extending around the circumference of the pin base.
  • the finished article is made from a strip of conductive metal, as brass, which has been formed in a sheet metal stamping operation, or otherwise, so that the width of the terminal-forming strip narrows from the ferrule end of the pin to its tip, to provide a uniform taper when the strip has been rolled to its rounded form with the converging edges in substantial abutment.
  • the connector is plated with a metal of a more plastic character than the base sheet metal, such as tin, silver or gold, by electro-plating techniques well known in the art.
  • the numeral 4 indicates a section of a receptacle for the pin having a reamed taper conforming to the taper of the pin, as shown at 5 which receptacle, if desired, may be similarly plated as the pin.
  • a portion of a flat taper pin 10 is shown which conforms in shape to the taper included between the sides 11 of the tab receptacle 12.
  • a ferrule 13 integral with the tab receptacle is shown crimped to a wire 14.
  • Pin 10 and receptacle 12 may be provided with an electro-plated coating thereon, if desired. 7 I
  • the connectors are advantageously formed in continuous strips and wound on reels so as to be applied by automatic or semi-automatic connector applicator machines as disclosed, for example, in the copending application to Quentin Berg, Serial Number 151,795, filed March 24, 1950, now Patent 2,778,097 issued January 22, 1957.
  • a plurality of connectors 12 may be left, in the blanking and forming operations, with linking strips 17 joining the connectors in a ladder-like arrange ment, as shown in Figure 6, the pre-applied ferrule 13' having upstanding ears adapted to be received and curled around the conductor as illustrated in Figure 2.
  • the wire strands of the conductor are gathered with the ferrule and strands being pressed into a pre-determined volume while linking strips 17 are severed from the connector.
  • the taper pins are preferably rolled from strip stock to very close tolerances and wound end-to-end on reels, readily usable with the aforesaid applicator machines.
  • the pin connectors described herein and shown in the drawings, as commonly employed, have a taper angle (i. e., the angle included between opposite surfaces of the tapered pin) from about 3 to about 4. Beyond these limits it is generally better to increase the angle beyond 4 than to reduce it below 3. From a theoretical standpoint, the optimum angle will depend upon coefficients of friction of the surfaces of the pin and the receptacle into which it is inserted, but as a practical. matter, a metal taper pin having a taper less than about 7 may be regarded as a self-locking pin, if properly inserted.
  • the receptacles 19 shown in Figures 4 and are made from a strip of beryllium copper about ten thousandths of an inch (0.010) in thickness, the receptacle portions 20 being rolled to cylindrical form.
  • the cylinders are supported in a phenolic resin block 21 provided with a cover plate 22 and when a taper pin is inserted into the cylindrical receptacle the latter is fiexed somewhat into a conical configuration conforming at least in part to the outer surface of the pin as shown in Figure 7.
  • connectors made in accordance with this invention fail safe, i. e., whereas with ordinary electrical connectors use and wear tend to loosen the connection and reduce the contact resistance, it is found that these connectors, when subjected to repeated use, vibration, or conditions of corrosion, are more securely connected and ordinarily maintain or decrease their low contact resistance.
  • the worst that can happen from ordinary failure in the connection is that it cannot be as readily disconnected as it could have been when first put into use.
  • a self-locking frictional engaging connector comprising a pin portion and a ferrule portion integral therewith for cold-forging onto an electrical conductor, said pin and ferrule portions being formed from sheet metal, said pin portion being formed with lateral edges con- 4 verging toward the end thereof remote from the ferrule portion and into a uniform cross section with the converging edges providing a uniformly tapered pin, and a conductive coating of tin on said pin portion.
  • a self-locking frictional engaging connector comprising a pin portion anda ferrule portion integral therewith for cold-forging onto an electrical conductor, said pin and ferrule portions being formed from sheet metal, said pin portion being formed with lateral edges converging toward the end thereof remote from said ferrule portion, with said converging edges being brought substantially into abutting relation to provide a hollow uniformly tapered pin, and a conductive coating on said pin portion of a metal of more plastic character than said sheet metal.
  • a self-locking frictional engaging connector comprising a pin portion and a ferrule portion integral therewith for cold-forging onto an electrical conductor, said pin and ferrule portions being formed from sheet metal, the pin portion being formed with lateral edges converging toward the end remote from the ferrule with said converging edges brought into substantial abutting relation, thus providing a hollow uniformly tapered pin, the taper of said pin portion being from 3 to 7.
  • a self-locking connector as in claim 3 in which the taper of each said pin portion is approximately three and one-half degrees.
  • An electrical connection which comprises a taper pin having a taper from 3 to 7 and a receptacle having a hole, the inner surface of which is at least in part an electrical conductor, a part of said hole being of lesser diameter than the broadest part of the taper on said pin, and the mouth of said hole being wider than the outer end of the pin, the material of said receptacle being adapted to expand resiliently so as to engage the taper pin in substantial surface conformity therewith, at least at the extremities of a band equal in breadth from 1 /2 to 2 /2 times the diameter of the taper pin, said receptacle gripping the pin with substantial resilient force resulting from distortion of the receptacle by action of the taper and holding the pin against axial withdrawal by surface friction resulting from said grip.
  • An electrical connection which comprises a taper pin having a taper of 3 /2 and a receptacle having a hole, the inner surface of which is at least in part an electrical conductor, a part of said hole being of lesser diameter than the broadest part of the taper on said pin, and the mouth of said hole being wider than the outer end of the pin, the material of said receptacle being adapted to expand resiliently so as to engage the taper pin in substantial surface conformity therewith, at least at the extremities of the band equal in breadth from 1 /2 to 2 /2 times the diameter of the taper pin, said receptacle gripping the pin with substantial resilient force resulting from distortion of the receptacle by action of the taper and holding the pin against axial withdrawal by surface friction resulting from said grip.
  • An electrical connection comprising a pin formed from sheet metal having lateral edges converging toward one end thereof, said edges being brought into substantial abutting relation to provide a hollow uniformly tapered pin, and a receptacle receiving said pin and having a contact surface tapered in accordance with the taper of said pin, the engaging surfaces of said pin and receptacle having a conductive electro-deposited plating thereon.
  • a self-locking frictional engaging connector comprising, in combination, a sheet metal pin portion and an integral sheet metal ferrule portion adapted to be coldforged onto a wire, said pin portion being formed with lateral edges converging toward the end remote from the ferrule with said edges being brought into substantial abutting relation to provide a hollow uniformly tapered pin, an outwardly projecting circumferential bead between said pin and ferrule portions, and an electroplated conductive coating on at least said pin portion.
  • a self-locking frictional engaging connector comprising a sheet metal pin portion and an integral sheet metal ferrule portion for cold-forging onto an electrical conductor, said pin portion being formed with lateral edges converging toward the end thereof remote from the ferrule with said edges being brought substantially into abutting relation to provide a hollow uniformly tapered pin, and outwardly projecting and circumferentially extending bead between said pin and ferrule portions, and a conductive coating on at least said pin portion.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US400996A 1953-12-29 1953-12-29 Electrical connector Expired - Lifetime US2816275A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE534477D BE534477A (de) 1953-12-29
US400996A US2816275A (en) 1953-12-29 1953-12-29 Electrical connector
GB33918/54A GB799598A (en) 1953-12-29 1954-11-23 Improvements in or relating to electrical connectors of the pin and socket type
FR1114700D FR1114700A (fr) 1953-12-29 1954-12-02 Raccords électriques
DEA6499U DE1761263U (de) 1953-12-29 1954-12-28 Selbstsperrende steckverbindungen fuer elektrische leitungen u. dgl.
DEA21817A DE1047279B (de) 1953-12-29 1954-12-28 Selbstsperrende elektrische Steckverbindung
CH336105D CH336105A (de) 1953-12-29 1954-12-29 Verbindungseinrichtung für elektrische Leitungen
JP707360U JPS4032615Y1 (de) 1953-12-29 1954-12-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US400996A US2816275A (en) 1953-12-29 1953-12-29 Electrical connector

Publications (1)

Publication Number Publication Date
US2816275A true US2816275A (en) 1957-12-10

Family

ID=23585835

Family Applications (1)

Application Number Title Priority Date Filing Date
US400996A Expired - Lifetime US2816275A (en) 1953-12-29 1953-12-29 Electrical connector

Country Status (7)

Country Link
US (1) US2816275A (de)
JP (1) JPS4032615Y1 (de)
BE (1) BE534477A (de)
CH (1) CH336105A (de)
DE (2) DE1761263U (de)
FR (1) FR1114700A (de)
GB (1) GB799598A (de)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975395A (en) * 1955-02-10 1961-03-14 Amp Inc Wiping contact assembly for plugboard
US2978667A (en) * 1955-12-05 1961-04-04 Amp Inc Miniature taper pin
US2987697A (en) * 1957-10-11 1961-06-06 Ark Les Switch Corp Electric connector
US2992404A (en) * 1957-03-14 1961-07-11 Berg Quentin Electrical disconnect
US2995617A (en) * 1958-11-03 1961-08-08 Malco Mfg Co Self-locking terminal
US3005180A (en) * 1954-08-19 1961-10-17 Amp Inc Multiple-connector stacked terminal blocks
US3020520A (en) * 1959-07-30 1962-02-06 Berg Quentin Terminal for making electrical connections
US3059152A (en) * 1959-02-05 1962-10-16 Globe Union Inc Plug-in electronic circuit units and mounting panels
US3071750A (en) * 1960-04-05 1963-01-01 Amp Inc Solderless electrical connectors
US3124403A (en) * 1964-03-10 Electrical bus conductor
US3163484A (en) * 1960-12-27 1964-12-29 Philips Corp Electric terminal
US3169814A (en) * 1962-05-31 1965-02-16 Philips Corp Biaxial electric terminal
US3183471A (en) * 1963-02-08 1965-05-11 Thomas & Betts Corp Electrical terminal and connection
US3185952A (en) * 1955-07-07 1965-05-25 Amp Inc Lead connection for printed circuit board
US3209310A (en) * 1962-07-20 1965-09-28 Sperry Rand Corp Electrical contact
US3256510A (en) * 1963-11-26 1966-06-14 United Carr Inc Plural socket contact
US3409866A (en) * 1965-03-19 1968-11-05 Amp Inc Open seam plug and socket connector
US3511921A (en) * 1968-11-01 1970-05-12 Bell Telephone Labor Inc Indium coated slotted electrical connectors
US3577119A (en) * 1969-06-04 1971-05-04 Amp Inc Electrical connectors on a carrier strip
US3614718A (en) * 1969-10-13 1971-10-19 Joseph J Cervenka Terminal strip
US3686746A (en) * 1969-11-03 1972-08-29 Contacts Inc Closing wire terminals
US3708878A (en) * 1970-06-11 1973-01-09 Amp Inc Wire connection, method, and connecting apparatus
FR2188330A1 (de) * 1972-06-12 1974-01-18 Raychem Corp
US4269472A (en) * 1979-10-26 1981-05-26 Amp Incorporated Electrical terminal
US4470649A (en) * 1982-06-23 1984-09-11 Midland-Ross Corporation Low profile integrated circuit electrical socket assembly
US4975088A (en) * 1988-06-30 1990-12-04 Grote & Hartmann Gmbh & Co. Kg Potential connector
US5075176A (en) * 1990-02-23 1991-12-24 Stolberger Metallwerke Gmbh & Co. Kg Electrical connector pair
US5082462A (en) * 1988-12-08 1992-01-21 E. I. Du Pont De Nemours And Company Ribbed terminal having pin lead-in portion thereon
US5169321A (en) * 1990-07-24 1992-12-08 Yamaichi Electric Co., Ltd. Electroplated contact with insulating material
US5582519A (en) * 1994-12-15 1996-12-10 The Whitaker Corporation Make-first-break-last ground connections
US20090124140A1 (en) * 2007-11-13 2009-05-14 Fci Americas Technology, Inc. Utca-compliant power contacts
US20120077381A1 (en) * 2010-09-23 2012-03-29 Tyco Electronics Corporation Press fit cable connector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028574A (en) * 1959-08-19 1962-04-03 Winchester Electronics Inc Electrical connector with resiliently mounted removable contacts
JPS5125593B1 (de) * 1970-03-19 1976-07-31
JPS57167575U (de) * 1981-04-16 1982-10-22
JPH0357025Y2 (de) * 1984-11-13 1991-12-25

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US249574A (en) * 1881-11-15 Switch-board for electric circuits
US1102728A (en) * 1914-01-09 1914-07-07 Robert J M Danley High-tension switch.
US1490504A (en) * 1922-05-20 1924-04-15 Aluminum Co Of America Electrode
GB233841A (en) * 1924-03-31 1925-05-21 Busby And Company Ltd Improved aerial earthing means for use in connection with apparatus for wireless telephony, telegraphy or the like
US1830084A (en) * 1929-10-28 1931-11-03 Hardwick Hindle Inc Terminal for resistors
US1955528A (en) * 1930-09-26 1934-04-17 Electroline Company Connecter
US2294482A (en) * 1939-10-28 1942-09-01 Bell Telephone Labor Inc Electrical contact and terminal bank
US2600188A (en) * 1949-10-06 1952-06-10 Hugh W Batcheller Spade connector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE734043C (de) * 1940-11-27 1943-04-07 Siemens Ag Herstellung elektrischer Kontakte, insbesondere fuer Wellenschalter in Hochfrequenzkreisen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US249574A (en) * 1881-11-15 Switch-board for electric circuits
US1102728A (en) * 1914-01-09 1914-07-07 Robert J M Danley High-tension switch.
US1490504A (en) * 1922-05-20 1924-04-15 Aluminum Co Of America Electrode
GB233841A (en) * 1924-03-31 1925-05-21 Busby And Company Ltd Improved aerial earthing means for use in connection with apparatus for wireless telephony, telegraphy or the like
US1830084A (en) * 1929-10-28 1931-11-03 Hardwick Hindle Inc Terminal for resistors
US1955528A (en) * 1930-09-26 1934-04-17 Electroline Company Connecter
US2294482A (en) * 1939-10-28 1942-09-01 Bell Telephone Labor Inc Electrical contact and terminal bank
US2600188A (en) * 1949-10-06 1952-06-10 Hugh W Batcheller Spade connector

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124403A (en) * 1964-03-10 Electrical bus conductor
US3005180A (en) * 1954-08-19 1961-10-17 Amp Inc Multiple-connector stacked terminal blocks
US2975395A (en) * 1955-02-10 1961-03-14 Amp Inc Wiping contact assembly for plugboard
US3185952A (en) * 1955-07-07 1965-05-25 Amp Inc Lead connection for printed circuit board
US2978667A (en) * 1955-12-05 1961-04-04 Amp Inc Miniature taper pin
US2992404A (en) * 1957-03-14 1961-07-11 Berg Quentin Electrical disconnect
US2987697A (en) * 1957-10-11 1961-06-06 Ark Les Switch Corp Electric connector
US2995617A (en) * 1958-11-03 1961-08-08 Malco Mfg Co Self-locking terminal
US3059152A (en) * 1959-02-05 1962-10-16 Globe Union Inc Plug-in electronic circuit units and mounting panels
US3020520A (en) * 1959-07-30 1962-02-06 Berg Quentin Terminal for making electrical connections
US3071750A (en) * 1960-04-05 1963-01-01 Amp Inc Solderless electrical connectors
US3163484A (en) * 1960-12-27 1964-12-29 Philips Corp Electric terminal
US3169814A (en) * 1962-05-31 1965-02-16 Philips Corp Biaxial electric terminal
US3209310A (en) * 1962-07-20 1965-09-28 Sperry Rand Corp Electrical contact
US3183471A (en) * 1963-02-08 1965-05-11 Thomas & Betts Corp Electrical terminal and connection
US3256510A (en) * 1963-11-26 1966-06-14 United Carr Inc Plural socket contact
US3409866A (en) * 1965-03-19 1968-11-05 Amp Inc Open seam plug and socket connector
US3511921A (en) * 1968-11-01 1970-05-12 Bell Telephone Labor Inc Indium coated slotted electrical connectors
US3577119A (en) * 1969-06-04 1971-05-04 Amp Inc Electrical connectors on a carrier strip
US3614718A (en) * 1969-10-13 1971-10-19 Joseph J Cervenka Terminal strip
US3686746A (en) * 1969-11-03 1972-08-29 Contacts Inc Closing wire terminals
US3708878A (en) * 1970-06-11 1973-01-09 Amp Inc Wire connection, method, and connecting apparatus
FR2188330A1 (de) * 1972-06-12 1974-01-18 Raychem Corp
US3852517A (en) * 1972-06-12 1974-12-03 Raychem Corp Conductive insert for heat recoverable electrical connector
US4269472A (en) * 1979-10-26 1981-05-26 Amp Incorporated Electrical terminal
US4470649A (en) * 1982-06-23 1984-09-11 Midland-Ross Corporation Low profile integrated circuit electrical socket assembly
US4975088A (en) * 1988-06-30 1990-12-04 Grote & Hartmann Gmbh & Co. Kg Potential connector
US5082462A (en) * 1988-12-08 1992-01-21 E. I. Du Pont De Nemours And Company Ribbed terminal having pin lead-in portion thereon
US5075176A (en) * 1990-02-23 1991-12-24 Stolberger Metallwerke Gmbh & Co. Kg Electrical connector pair
US5169321A (en) * 1990-07-24 1992-12-08 Yamaichi Electric Co., Ltd. Electroplated contact with insulating material
US5582519A (en) * 1994-12-15 1996-12-10 The Whitaker Corporation Make-first-break-last ground connections
US20090124140A1 (en) * 2007-11-13 2009-05-14 Fci Americas Technology, Inc. Utca-compliant power contacts
US7604489B2 (en) 2007-11-13 2009-10-20 Fci Americas Technology, Inc. μTCA-compliant power contacts
US20120077381A1 (en) * 2010-09-23 2012-03-29 Tyco Electronics Corporation Press fit cable connector
US8202121B2 (en) * 2010-09-23 2012-06-19 Tyco Electronics Corporation Press fit cable connector

Also Published As

Publication number Publication date
JPS4032615Y1 (de) 1965-11-16
GB799598A (en) 1958-08-13
DE1761263U (de) 1958-02-13
FR1114700A (fr) 1956-04-16
BE534477A (de)
CH336105A (de) 1959-02-15
DE1047279B (de) 1958-12-24

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