US3538239A - Grounding wire connector - Google Patents

Grounding wire connector Download PDF

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Publication number
US3538239A
US3538239A US787140A US3538239DA US3538239A US 3538239 A US3538239 A US 3538239A US 787140 A US787140 A US 787140A US 3538239D A US3538239D A US 3538239DA US 3538239 A US3538239 A US 3538239A
Authority
US
United States
Prior art keywords
ferrule
connector
wire
braid
grounding wire
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
US787140A
Other languages
English (en)
Inventor
Floyd Harold Renshaw Jr
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
Application filed by AMP Inc filed Critical AMP Inc
Application granted granted Critical
Publication of US3538239A publication Critical patent/US3538239A/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0512—Connections to an additional grounding conductor
    • 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
    • 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
    • H01R4/188—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 having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R4/20—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 using a crimping sleeve

Definitions

  • Another object is to provide connector means having inner ferrule means and outer ferrule means which are spaced from each other, but which are connected to each other by a strap of metal.
  • a further object is to provide improved connector means with lead-in means thereon by which the shield of a wire may be easily entered into place in the connector.
  • An additional object is to provide inspection means in a connector to assure proper location of a wire in the connector before and after crimping.
  • a still further object is to provide gripping means on the outer ferrule of a connector to grip and hold the outer conductor of shielded wire upon crimping, and support means on the inner ferrule of the connector to prevent undue compression damage to the center conductor and insulation of the wire.
  • Still another object is to provide stop means in a connector by which the end of a wire shield is properly located within the connector.
  • FIG. 1 is a perspective view of a connector according to this invention
  • FIG. 2 is a perspective view of a connection to shielded wire
  • FIG. 3 is a sectional view taken through the lines 3-3 of FIG. 1;
  • FIG. 4 is a sectional view taken through the lines 4-4 of FIG. 2.
  • a shielded wire A and a grounding wire B are interconnected by a connector C.
  • the wire A has a central conductor 2, surrounded by a layer of insulation 4, which in turn is surrounded by a braided outer conductor 6.
  • Wire A can either be shielded wire or coaxial cable.
  • the connector C consists of an inner round ferrule 8 and an outer U-shaped ferrule 10 which are integrally connected by a strap 12.
  • the connector C is made from electrically conductive sheet metal, such as brass, and is blanked and formed by conventional metal-stamping and metal-forming techniques.
  • Connec tors C may be made and connected together via strip S so as to be in strip form so that the connectors may be easily handled and stored. Individual connectors C may be cut from the strip S by an automatic crimping press when they are crimped to wires. Alternatively, the connectors may be cut from the strip S and subsequently crimped to wires by hand-crimping tools.
  • ferrule 10 is located outwardly from strip S and is connected thereto via extension 1.
  • a series of transverse holes 14 are formed in a portion of ferrule 10.
  • Holes 14 constitute gripping means to grip the braided outer conductor 6 of wire A when a connector is crimped, as well as breaking down the oxide coating between ferrule 10 and braid 6 to provide an excellent electrical connection.
  • Holes 14 further constitute inspection means so that the operator may readily view the braid before and after crimping. Holes can, of course. be located in ferrule 8.
  • inner ferrule 8 is connected to ferrule 10 via strap 12 so that ferrule 10 and ferrule 8 are cocked relative to one another in a .manner that rearward end 8" of ferrule 8 is directed slightly downwardly.
  • This arrangement provides a region 9 of easy access defining lead-in means whereby the braid 6 may be pushed over ferrule 8 without becoming snagged on the connector.
  • the radiused edge 16 on ferrule 10 and the radiused edge 18.011 ferrule 8 provide further lead-in means to prevent the braid from catching on the connector.
  • the strap of metal 12 integrally joining ferrule 8 to ferrule 10 further serves to stop the insertion travel of outer braid 6 into connector C. This arrangement assures that all connections are alike and that the braids of subsequent connections are located the same within their respective connectors.
  • FIGS. 2 and 4 a wire A is prepared by stripping a portion of braid 6 away and exposing the center conductor 2 and insulation 4.
  • a connector C is pushed onto the wire with the inner ferrule 8 under the end of braid 6 and over the insulation 4 and conductor 2. The connector is properly positioned when the end of the .braid 6 abuts strap 12.
  • a grounding wire B is prepared by exposing a short length of its conductor, whereafter it is insertably disposed in the region of access 9 directly over the braid 6. The connector is then crimped by a suitable crimping tool or machine. Upon crimping, the legs of ferrule 10 close around braid 6 and the conductor of wire B and compress them into intimate engagement with the connector C.
  • Inner ferrule 8 serves as a support to receive radial crimping forces and prevent the forces from damaging the conductor 2 and insulation 4 under the connector C. This would be especially important in the case of crimping the connector to a coaxial cable so as not to disturb the characteristic impedance thereof.
  • the end 8' of ferrule 8 is forced upwardly in concentric alignment with ferrule 10.
  • Strap 12 enables the ferrules to be centered relative to one another where ferrule 10 is crimped onto a braid around ferrule 8.
  • grounding wire B may then be terminated to an associate grounding means. It should be noted that more than one grounding wire B may be joined to a connector C, if desired. Alternatively, the shielded braid of two or more wires A may be connected in series by a running grounding wire B from one connector C to another.
  • connectors C may be pre-insulated by covering the outer surface of ferrule 10 with a sheet of suitable insulation, e.g. plastic or the like. This would be desirable in cases wherein the braid 6 of a shielded wire A is covered by a thin sheet of insulation material.
  • a sheet of suitable insulation e.g. plastic or the like.
  • Another alternative is to post insulate a connection by sliding a plastic or other dielectric sleeve over a connector after it is crimped.
  • An electrical connector comprising a tubular inner ferrule, a U-shaped outer ferrule, and a strap connecting said ferrules together at one end maintaining said ferrules spaced from each other and said inner ferrule disposed at an angle relative to a longitudinal axis of said outer ferrule, said outer ferrule partially surrounding said inner ferrule.
  • An electrical connector comprising:
  • an inner cylindrical ferrule and an outer U-shaped ferrule said outer ferrule spaced from and surrounding said inner ferrule, said outer ferrule and said inner ferrule integrally connected to each other by a bridging strap so that said inner ferrule is tilted with respect to said outer ferrule to provide an access space between said ferrules, said strap defining stop means to limit the insertion travel of a conductor means whereby said connector may be precisely positioned relative to said conductor.
  • An electrical connector for connecting grounding wire means to shielding wire means surrounding and in sulated from center conductor comprising an inner cylindrical ferrule adapted to be disposed under a portion of the shielding wire means and around a section of the insulated center conductor, said inner ferrule being partially surrounded by an outer U-shaped ferrule, said outer ferrule disposed in spaced relationship to said inner ferrule and adapted to be crimped onto said inner ferrule with the shielding wire means and the grounding wire means sandwiched between said ferrules, said ferrules connected together at one end by an integral strap.
  • an inner ferrule member adapted to be disposed under a portion of the shield of the shielding wire means, an outer U-shaped ferrule member partially surrounding said inner ferrule member and adapted to be disposed over the portion of the shielding wire means, said members connected to each other at one end by a strap maintaining said members spaced from each other to define lead-in means to easily receive the shielding wire means, and said outer ferrule member having inspection means to permit inspection of the disposition of the shielding wire means in said connector.
  • a connector according to claim 6 wherein one end of said inner ferrule is cocked downwardly away from said outer ferrule to define said lead-in means, and wherein the other ends of said ferrules are radiused to further define said lead-in means.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US787140A 1968-12-26 1968-12-26 Grounding wire connector Expired - Lifetime US3538239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78714068A 1968-12-26 1968-12-26

Publications (1)

Publication Number Publication Date
US3538239A true US3538239A (en) 1970-11-03

Family

ID=25140536

Family Applications (1)

Application Number Title Priority Date Filing Date
US787140A Expired - Lifetime US3538239A (en) 1968-12-26 1968-12-26 Grounding wire connector

Country Status (11)

Country Link
US (1) US3538239A (enrdf_load_stackoverflow)
JP (1) JPS4919912B1 (enrdf_load_stackoverflow)
BE (1) BE743377A (enrdf_load_stackoverflow)
CH (1) CH518015A (enrdf_load_stackoverflow)
DE (1) DE1964636C3 (enrdf_load_stackoverflow)
DK (1) DK128089B (enrdf_load_stackoverflow)
ES (1) ES374492A1 (enrdf_load_stackoverflow)
FR (1) FR2027117A1 (enrdf_load_stackoverflow)
GB (1) GB1230338A (enrdf_load_stackoverflow)
NL (2) NL6918710A (enrdf_load_stackoverflow)
SE (1) SE371048B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916085A (en) * 1975-01-06 1975-10-28 Essex International Inc Electrical connector
US4621887A (en) * 1981-03-09 1986-11-11 Allied Corporation Electrical contact
US4932906A (en) * 1988-12-16 1990-06-12 Amp Incorporated Electrical contact terminal
US4950186A (en) * 1988-12-16 1990-08-21 Amp Incorporated Electrical contact terminal
US4951389A (en) * 1989-05-31 1990-08-28 Amp Incorporated Method for making a wire barrel terminal
EP0544522A3 (en) * 1991-11-26 1993-12-01 Sumitomo Wiring Systems Inter-connecting terminal
US20090145655A1 (en) * 2007-12-07 2009-06-11 Gladd Joseph H Electromagnetically shielded cable
WO2010100467A1 (en) * 2009-03-02 2010-09-10 Tyco Electronics Uk Ltd Shielding braid termination for a shielded electrical connector
EP2416457A1 (de) * 2010-08-02 2012-02-08 Robert Bosch GmbH Verfahren zur elektrischen Kontaktierung von Drähten
WO2013165025A1 (en) * 2012-05-02 2013-11-07 Yazaki Corporation Connection structure of outer conductor terminal to electric wire
WO2014164589A1 (en) 2013-03-12 2014-10-09 Delphi Technologies, Inc. Grounding arrangement and method for a shielded cable
US9153878B2 (en) 2013-10-29 2015-10-06 Delphi Technologies, Inc. Termination assembly for a shielded cable and method of assembling
WO2022188902A1 (de) * 2021-03-12 2022-09-15 Skoda Auto A.S. Herstellverfahren des kabelschuhs und der kabelschuh

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616168U (enrdf_load_stackoverflow) * 1979-07-14 1981-02-12
JPS5523599A (en) * 1979-07-26 1980-02-20 Sharp Corp Temperature control unit
GB2232540B (en) * 1989-05-17 1993-09-01 New Chapel Electronics Limited Electrical screen connectors
GB2248145B (en) * 1990-09-24 1994-09-28 Ibm Coaxial cable terminal
FR2714770B1 (fr) * 1994-01-05 1996-02-23 Deutsch Connecteurs Electr Contact du type comportant un fût dans lequel doit être inséré et fixé un câble.
JP6856603B2 (ja) * 2018-10-19 2021-04-07 矢崎総業株式会社 端子、及び、端子付き電線
GB2612852A (en) * 2021-11-16 2023-05-17 Aptiv Tech Ltd Ferrule with wire crimp for shielded functionality

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929862A (en) * 1956-10-17 1960-03-22 Burndy Corp Compressible insulated connector for a shielded cable
US3453377A (en) * 1967-12-04 1969-07-01 Amp Inc Grounding connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929862A (en) * 1956-10-17 1960-03-22 Burndy Corp Compressible insulated connector for a shielded cable
US3453377A (en) * 1967-12-04 1969-07-01 Amp Inc Grounding connector

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916085A (en) * 1975-01-06 1975-10-28 Essex International Inc Electrical connector
US4621887A (en) * 1981-03-09 1986-11-11 Allied Corporation Electrical contact
US4932906A (en) * 1988-12-16 1990-06-12 Amp Incorporated Electrical contact terminal
US4950186A (en) * 1988-12-16 1990-08-21 Amp Incorporated Electrical contact terminal
US4951389A (en) * 1989-05-31 1990-08-28 Amp Incorporated Method for making a wire barrel terminal
EP0544522A3 (en) * 1991-11-26 1993-12-01 Sumitomo Wiring Systems Inter-connecting terminal
US5342996A (en) * 1991-11-26 1994-08-30 Sumitomo Wiring Systems, Ltd. Inter-connecting terminal
US20090145655A1 (en) * 2007-12-07 2009-06-11 Gladd Joseph H Electromagnetically shielded cable
US7692096B2 (en) * 2007-12-07 2010-04-06 Delphi Technologies, Inc. Electromagnetically shielded cable
EP2254199A1 (en) 2009-03-02 2010-11-24 Tyco Electronics UK Ltd. Shielding braid termination for a shielded electrical connector
WO2010100467A1 (en) * 2009-03-02 2010-09-10 Tyco Electronics Uk Ltd Shielding braid termination for a shielded electrical connector
CN102341965A (zh) * 2009-03-02 2012-02-01 泰科电子英国有限公司 用于屏蔽电连接器的屏蔽编织终端
US8585415B2 (en) 2009-03-02 2013-11-19 Tyco Electronics Uk Ltd Shielding braid termination for a shielded electrical connector
CN102341965B (zh) * 2009-03-02 2015-07-15 泰科电子英国有限公司 用于屏蔽电连接器的屏蔽编织终端
EP2416457A1 (de) * 2010-08-02 2012-02-08 Robert Bosch GmbH Verfahren zur elektrischen Kontaktierung von Drähten
WO2013165025A1 (en) * 2012-05-02 2013-11-07 Yazaki Corporation Connection structure of outer conductor terminal to electric wire
WO2014164589A1 (en) 2013-03-12 2014-10-09 Delphi Technologies, Inc. Grounding arrangement and method for a shielded cable
US8991045B2 (en) 2013-03-12 2015-03-31 Delphi Technologies, Inc. Grounding arrangement and method for a shielded cable
US9153878B2 (en) 2013-10-29 2015-10-06 Delphi Technologies, Inc. Termination assembly for a shielded cable and method of assembling
WO2022188902A1 (de) * 2021-03-12 2022-09-15 Skoda Auto A.S. Herstellverfahren des kabelschuhs und der kabelschuh

Also Published As

Publication number Publication date
BE743377A (enrdf_load_stackoverflow) 1970-05-28
FR2027117A1 (enrdf_load_stackoverflow) 1970-09-25
ES374492A1 (es) 1972-04-01
JPS4919912B1 (enrdf_load_stackoverflow) 1974-05-21
GB1230338A (enrdf_load_stackoverflow) 1971-04-28
NL6918710A (enrdf_load_stackoverflow) 1970-06-30
DE1964636C3 (de) 1976-01-02
DE1964636B2 (de) 1975-05-22
DE1964636A1 (de) 1970-07-09
SE371048B (enrdf_load_stackoverflow) 1974-11-04
DK128089B (da) 1974-02-25
CH518015A (fr) 1972-01-15
NL143377C (nl)

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