US3123431A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US3123431A
US3123431A US3123431DA US3123431A US 3123431 A US3123431 A US 3123431A US 3123431D A US3123431D A US 3123431DA US 3123431 A US3123431 A US 3123431A
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US
United States
Prior art keywords
contact portion
connector
ferrule
strut
crimping
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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
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English (en)
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Publication of US3123431A publication Critical patent/US3123431A/en
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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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/22—End pieces terminating in a spring clip
    • 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
    • H01R13/115—U-shaped sockets having inwardly bent legs, e.g. spade type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49925—Inward deformation of aperture or hollow body wall
    • Y10T29/49927—Hollow body is axially joined cup or tube
    • Y10T29/49929—Joined to rod
    • Y10T29/49931—Joined to overlapping ends of plural rods

Definitions

  • US. Patent 2,774,951 shows the general features of a popular type of electrical connector which is adapted to receive a rectangular tab and which comprises in general a hoot or web having its edge portions upwardly turned and inwardly and downwardly directed towards the floor so that the tab can be inserted between the floor and the edges of the sidewalls.
  • This type of disconnect has received a widespread acceptance in the electrical arts and is used in a variety of forms and sizes throughout the industry.
  • the Kinkaid patent shows a conventional connector of this type having channel-shaped or trough-like ferrule-forming portions integral with the contact portion and disposed in axial alignment therewith.
  • this extrusion constitutes a troublesome phenomenon for the reason that since the ferrule-forming portion is integral with the contact portion, the extrusion of the ferrule-forming portion can cause transmission of stresses to the contact portion with a resulting unwanted deformation thereof.
  • the sidewalls of the contact portion may be spread apart and the critical dimensions required in this contact portion can thereby be lost.
  • the imposition of the compressive stresses of a crimping operation may cause fracture in the connector in areas of high stress concentration such as sharp corners or bends if these parts fail to yield.
  • a flag-type disconnect having a contact portion including a web or floor with up-standing and inwardly directed sidewalls so that a conventional tab can be inserted into the contact portion.
  • a generally U-shaped ferrule-forming portion Spaced from the contact portion is a generally U-shaped ferrule-forming portion having its axis extending normally of the axis of the contact portion.
  • These two portions of the connector are integrally formed and are joined together by means of a pair of struts one of which, in the preferred embodiment, is of L-shaped cross section so that it resists deformation or deflection when the connector is crimped.
  • the other strut is of simple rectangular cross section and is easily bent or deflected when the crimping operation takes place.
  • this second strut is sufiiciently low so that it deforms upon crimping to a degree sufficient to accommodate all of the longitudinal extrusion of the ferrule-forming portion at the time of crimping.
  • the critical contact portion of the connector is thus left undisturbed and undamaged by the crimping operation.
  • FIGURE 1 is a perspective view of an uncrimped terminal in accordance with the invention.
  • FIGURE 2 is a frontal view of the connector.
  • FIGURE 3 is a top plan view of a pair of connectors integral with a carrier strip showing the manner in which the preferred embodiment is manufactured.
  • FIGURE 4 is a side view of the connector seen from the right in FIGURE 2.
  • FIGURE 5 is a view taken along the lines 5-5 of FIGURE 4.
  • FIGURE 6 is a top plan view or" the connector of FIGURE 1, and
  • FIGURE 7 is a View similar to FIGURE 6 but showing the connector after crimping and illustrating the bending of the deformable strut.
  • the preferred embodiment comprises a connector having a contact portion 2 and a ferrule-forming portion 4 oriented substantially normallyof the axis of the contact portion.
  • the ferrule-forming portion comprises a generally fiat base section 6 having a first pair of upstanding sidewalls 8 which are adapted to receive and to be crimped onto the stripped end .of a conductor and a second pair of upstanding sidewalls 12 which are intended to be crimped onto the insulation of the conductor.
  • the section 8 is provided with grooves it in order to facilitate .and improve electrical contact between the conductor and connector.
  • the contact portion has a base or web 14 having its edge portions 16 bent to extend normally of its plane and then downwardly as shown at 18 toward the underside of the web 14 as viewed in FIGURE 1. Connectors of this type are adapted to receive simple tabs as fragmentarily shown at 2th to establish electrical contact upon insertion of the tab.
  • the contact portion 2 must conform to relatively precise dimensional tolerances and the contact portion .should not, therefore, be subjected to abusive treatment if its electrical integrity is to be preserved.
  • the contact portion and the ferrule-forming portion are integrally formed and in the finished form are joined together by a pair of struts 22, 2.8.
  • the strut 22 is of L-shaped cross section as shown in FIGURE and is, therefore, extremely stiff and resistant to flexure when it is loaded by forces applied in a direction normally of its axis.
  • This strut 22 is joined to the contact portion 8 by means of an upwardly inclined transition section 24 which merges with the iloor of the ferrule-forming portion.
  • the strut 28 is of simple rectangular cross section and has its major axis extending normally of the direction of the applied forces When crimping takes place as will be explained below. By virtue of this orientation of the strut 28, it is easily and readily deformed in the same manner as a thin strip of metal can be easily flexed in a direction normal to its plane. Strut 28 is joined to the ferruleforming portion 12 by a curved transition section 26 which also merges with floor 6 of the ferrule-forming portion and is, at its opposite end, connected to the sidewall l6.
  • a notch 36 is formed at the end of the strut 28 and adjacent to the contact portion to concentrate a relatively high stress in this area upon crimping and to encourage bending of this strut in a controlled manner.
  • a wire is positioned in the ferrule-forming portion with its stripped end 36 between the sidewalls 8 and with the end portion of the insulation 38 between the sidewalls 12. Thereafter the two pairs of sidewalls are crimped onto the end of the wire, the sidewalls 8 being bent inwardly and downwardly as shown at 8', FIGURE 7, while the sidewalls 12 are simply wrapped around the insulation as shown at 12'.
  • Connectors in accordance with the invention are advantageously formed by die stamping operations and are produced in strip form as shown in FIGURE 3.
  • two connectors are shown secured to a carrier strip 34 by means of connecting sections 32 which are removed by shearing at the time of crimping.
  • the present invention is not limited to the precise form of connector shown in the drawings but is amenable to usage in other flag type connectors where it is desirable to obviate the transmission of crimping stresses to the contact portion of the terminal and/ or to avoid fracture of connecting struts or other connecting members between the contact portion and the ferrule-forming portion.
  • a flag type electrical connector comprising a contact portion and a crimp portion, the axis of said crimp portion extending transversely of the axis of said contact portion, said portions being connected together by struts, at least one of said struts being individually deformable in a direction extending laterally of its axis by an amount substantially equal to the elongation which takes place in said crimp portion upon crimping whereby, upon crimping said crimp portion to a conductor, said crimp portion is longitudinally extruded and said one strut deforms to ac-- commodate said extrusion.
  • a flag type electrical connector comprising a contact portion and a crimp portion, the axis of said crimp portion extending transversely of the axis of said contact portion, said portions being connected together by a pair of spaced apart struts, one of said struts being yieldable upon application of a force in a direction extending transversely of its length and parallel to the axis of said crimp portion, and the other of said struts being relatively stiff and resistant to yielding upon application of a force in said direction whereby, upon crimping said crimp portion to a conductor with concomitant longitudinal extrusion thereof, said one strut yields to accommodate said extrusion without transmission of stress to other parts of said connector.
  • a flag type electrical connector comprising a con tact portion and a crimp portion, the axis of said crimp portion extending transversely of the axis of said contact portion, said portions being connected together by a pair of spaced apart struts, one of said struts having a relatively weakened zone at a location adjacent to said contact portion whereby, upon crimping said crimp portion to a conductor, said crimp portion is longitudinally extruded and said one strut is bent with said weakened zone serving as a pivot thereby to compensate for said extrusion without transmission of stress to other parts of said connector.
  • a flag type electrical connector comprising a contact portion and a crimp portion, the axis of said crimp portion extending transversely of the axis of said contact portion, said portions being connected together by a pair of spaced apart struts, one of said struts having a stress raising notch adjacent to said contact portion whereby said one strut tends to bend with said notch as a pivot upon application of a force in a direction parallel to the axis of said crimp portion, and the other of said struts being relatively stiff and resistant to deformation and bending upon application thereto of a force in said direction whereby, upon crimping of said crimp portion to a conductor with concomitant axial extrusion thereof, said one strut is bent to compensate for said extrusion without transmission of stress to other parts of said connector.
  • a flag type electrical connector formed from a single section of sheet metal, one end of said section being formed as a contact portion of said connector, ear means struck up from said section on the opposite end of said section to provide a crimp portion of U-shaped cross section, the axis of said crimp portion extending transversely of the axis of said contact portion, a pair of connecting links disposed one on each side of said ear means,
  • one of said connecting links being readily deformable in a direction parallel to the axis of said crimp portion whereby, upon crimping said crimp portion to a conductor by bending said ear means over, and compressing said ear means around said conductor, said crimp portion is axially extruded, and said one connecting link is deformed to compensate for said extrusion.
  • a flag type electrical connector comprising a contact portion and a crimp portion, said contact portion comprising a web having upstanding sidewalls on its opposite sides, said contact portion being intended to receive a tab of a mating connector, the axis of said crimp portion extending transversely of the axis of contact portion, said portions being connected together by a pair of spaced apart struts, one of said struts having a relatively weakened zone at a location adjacent to said contact portion whereby, upon crimping said crimp portion to a conductor, said crimp portion is longitudinally extruded and said one strut is bent with said weakened zone serving as a pivot thereby to compensate for said extrusion without transmission of stress to other parts of said connector.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US3123431D 1961-07-18 Electrical connector Expired - Lifetime US3123431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12485461A 1961-07-18 1961-07-18

Publications (1)

Publication Number Publication Date
US3123431A true US3123431A (en) 1964-03-03

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Application Number Title Priority Date Filing Date
US3123431D Expired - Lifetime US3123431A (en) 1961-07-18 Electrical connector

Country Status (5)

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US (1) US3123431A (en))
BE (1) BE620163A (en))
CH (1) CH386517A (en))
DE (2) DE1190537B (en))
GB (1) GB936573A (en))

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194877A (en) * 1962-05-08 1965-07-13 Amp Inc Electrical connector for connecting an electrical lead to the braid of a braid-shielded electrical cable
US3316526A (en) * 1963-11-30 1967-04-25 Amp Inc Iodine lamp connector
US3351704A (en) * 1965-03-18 1967-11-07 Berg Electronics Inc Soldering aid terminal
US3436006A (en) * 1965-06-22 1969-04-01 Thomas & Betts Corp Ultrasonic welding device
US3771111A (en) * 1972-06-12 1973-11-06 Amp Inc Flag type electrical terminal
US4080157A (en) * 1976-06-14 1978-03-21 Albertson Quinton B Welding torch lighter
US5344348A (en) * 1993-04-29 1994-09-06 Clements Manufacturing Company, Inc. Electrical terminal
WO2006027239A1 (de) * 2004-09-10 2006-03-16 Schulte Elektrotechnik Gmbh & Co. Kg Kontakthülse für litzenanschlüsse
US20060070940A1 (en) * 2003-08-13 2006-04-06 Koch Membrane Systems, Inc. Filtration element and method of constructing a filtration assembly
US7198526B1 (en) * 2005-11-21 2007-04-03 Etco, Inc. Low-profile flag electrical terminal connector assembly
USD851041S1 (en) * 2017-11-01 2019-06-11 Japan Aviation Electronics Industry, Limited Electrical connector
US20190288428A1 (en) * 2018-03-13 2019-09-19 Tyco Electronics (Shanghai) Co. Ltd. Connection Terminal
US10601161B2 (en) * 2018-03-13 2020-03-24 Tyco Electronics (Shanghai) Co. Ltd. Connection terminal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993959A (en) * 1990-01-19 1991-02-19 Amp Incorporated Grounding clip
DE4014048A1 (de) * 1990-04-28 1991-10-31 Wago Verwaltungs Gmbh Elektrische verbindungsklemme
DE29716767U1 (de) * 1997-09-18 1997-11-06 Stocko Metallwarenfab Henkels Flachsteckhülse zum elektrischen Verbinden eines eine abisolierte Litze aufweisenden Kabels o.dgl. mit einem Flachstecker
US6106310A (en) * 1997-11-19 2000-08-22 The Whitaker Corporation Panel-grounding contact

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406079A (en) * 1944-01-19 1946-08-20 Fred G Krueger Washer lug
US2701350A (en) * 1952-10-18 1955-02-01 Soreng Products Corp Separable electrical connector
US2774951A (en) * 1954-12-16 1956-12-18 Aircraft Marine Prod Inc Terminal clip
US2811705A (en) * 1953-09-25 1957-10-29 Amp Inc Electrical connector
US2813258A (en) * 1956-05-09 1957-11-12 Jr Ferdinand Klumpp Conductor terminals
CH325979A (de) * 1953-07-15 1957-11-30 Standard Telephon & Radio Ag Lösbare Verbindungsstelle zwischen einem elektrischen Leiter und einer Anschlussklemme sowie Verfahren und Werkzeug zur Herstellung derselben

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2406079A (en) * 1944-01-19 1946-08-20 Fred G Krueger Washer lug
US2701350A (en) * 1952-10-18 1955-02-01 Soreng Products Corp Separable electrical connector
CH325979A (de) * 1953-07-15 1957-11-30 Standard Telephon & Radio Ag Lösbare Verbindungsstelle zwischen einem elektrischen Leiter und einer Anschlussklemme sowie Verfahren und Werkzeug zur Herstellung derselben
US2811705A (en) * 1953-09-25 1957-10-29 Amp Inc Electrical connector
US2774951A (en) * 1954-12-16 1956-12-18 Aircraft Marine Prod Inc Terminal clip
US2813258A (en) * 1956-05-09 1957-11-12 Jr Ferdinand Klumpp Conductor terminals

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194877A (en) * 1962-05-08 1965-07-13 Amp Inc Electrical connector for connecting an electrical lead to the braid of a braid-shielded electrical cable
US3316526A (en) * 1963-11-30 1967-04-25 Amp Inc Iodine lamp connector
US3351704A (en) * 1965-03-18 1967-11-07 Berg Electronics Inc Soldering aid terminal
US3436006A (en) * 1965-06-22 1969-04-01 Thomas & Betts Corp Ultrasonic welding device
US3771111A (en) * 1972-06-12 1973-11-06 Amp Inc Flag type electrical terminal
US4080157A (en) * 1976-06-14 1978-03-21 Albertson Quinton B Welding torch lighter
US5344348A (en) * 1993-04-29 1994-09-06 Clements Manufacturing Company, Inc. Electrical terminal
US20060070940A1 (en) * 2003-08-13 2006-04-06 Koch Membrane Systems, Inc. Filtration element and method of constructing a filtration assembly
WO2006027239A1 (de) * 2004-09-10 2006-03-16 Schulte Elektrotechnik Gmbh & Co. Kg Kontakthülse für litzenanschlüsse
US20070207678A1 (en) * 2004-09-10 2007-09-06 Schulte Elektrotechnik Gmbh & Co. Kg Contact Sleeve for Stranded Conductor Connections
US7198526B1 (en) * 2005-11-21 2007-04-03 Etco, Inc. Low-profile flag electrical terminal connector assembly
USD851041S1 (en) * 2017-11-01 2019-06-11 Japan Aviation Electronics Industry, Limited Electrical connector
US20190288428A1 (en) * 2018-03-13 2019-09-19 Tyco Electronics (Shanghai) Co. Ltd. Connection Terminal
US10601161B2 (en) * 2018-03-13 2020-03-24 Tyco Electronics (Shanghai) Co. Ltd. Connection terminal
US10811803B2 (en) * 2018-03-13 2020-10-20 Tyco Electronics (Shanghai) Co. Ltd. Connection terminal

Also Published As

Publication number Publication date
CH386517A (fr) 1965-01-15
GB936573A (en) 1963-09-11
DE1190537B (de) 1965-04-08
DE1969177U (de) 1967-09-28
BE620163A (en))

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