US3296363A - Crimped coaxial cable connection with knurled extension - Google Patents

Crimped coaxial cable connection with knurled extension Download PDF

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Publication number
US3296363A
US3296363A US370793A US37079364A US3296363A US 3296363 A US3296363 A US 3296363A US 370793 A US370793 A US 370793A US 37079364 A US37079364 A US 37079364A US 3296363 A US3296363 A US 3296363A
Authority
US
United States
Prior art keywords
cable
connector
extension
grooves
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
US370793A
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English (en)
Inventor
Laudig Ronald Clair
Stark Frank Benjamin
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 NL135009D priority Critical patent/NL135009C/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US370793A priority patent/US3296363A/en
Priority to GB19962/65A priority patent/GB1034398A/en
Priority to NL6506107A priority patent/NL6506107A/xx
Priority to FR18195A priority patent/FR1434055A/fr
Priority to DE1965A0049299 priority patent/DE1465170A1/de
Priority to ES0313381A priority patent/ES313381A1/es
Application granted granted Critical
Publication of US3296363A publication Critical patent/US3296363A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable

Definitions

  • This invention relates to an improved connector of the type adapted to be crimped to coaxial cable.
  • a further object is'to provide a coaxial connector with a crimping sleeve relieved to accommodate a wide range of cable braid diameters and configurations.
  • the invention contemplates a coaxial connector construction which includes a sleeve extension having serrations or grooves against which the metal of the connector crimping ferrule is formed.
  • the extension surface is knurled in crossing and spiraled grooves to define surfaces which lock the connector against both twisting and pull-out forces.
  • the extension surface is serratedin interaxial and tranverse grooves which lock against such forces.
  • the outer conductor of attached coaxial cable is entrapped between the outer surface of the connector sleeve extension and the inner surface of the crimping ferrule and is thereby locked to the connector against either of the aforementioned failure modes.
  • the forming of the metal of the connector ferrule takes place in both embodiments to an extent to develop working of the surfaces of the ferrule, extension and cable outer conductor to provide a stable interface therebetween.
  • FIGURE 1a is a perspective view of a connector half of the invention in one embodiment
  • FIGURE lb is a perspective view of joined connector halves crimped to coaxial cable
  • FIGURE 2a is a longitudinal section of the connector of the invention in one embodiment with the ferrules thereof crimped to terminate attached cables;
  • FIGURE 2b is a cross-sectional view taken along lines 22 of FIGURE 2a;
  • FIGURE 3 is a perspective view of an alternative version of a connector half of the invention.
  • FIGURES 4a and 4b are perspective views of types of coaxial cable braid served by the invention embodiments.
  • a coaxial cable 10 is shown to include a center conductor 12 surrounded by a dielectric sheath 14 and an outer conductor 16, in turn, surrounded by an insulating and protective sheath 18.
  • the outer conductor 16 is of a standard type made of interwoven strands of conductive wire to form a braid which extends in crossing spirals along and about the dielectric sheath 14.
  • FIGURE 412 an alternative cable construction is shown wherein the braid 16' is of interwoven strands of conductive ribbons or foil.
  • the general purpose of 16 and 16 is to shield the center conductor 12 and the signals carried thereby from being modulated or otherwise af fected by stray RFI.
  • the outer conductor is earthed or connected'to chassis potential.
  • the outer conductor becomes the only practical and effective member for holding the cable to the connector to which the cable is attached.
  • it is of considerable importance to obtain a good mechanical connection with the cable outer conductor.
  • FIGURES 1a-2 there is depicted a connector half 20 and a complementary half 20' each having at the rear end thereof a sleeve extension 22 internally bored at 24 to a diameter approximating the diameter of the cable sheath 14.
  • the bore 24 extends through 22 into a central cavity of 20 wherein is housed a center contact and insulating support structure 30 or 30' in half 20.
  • Extension 22 further includes at the outer end a beveled portion 26 adapted to assist the entry of the extension under the braid 16 during assembly.
  • Disposed on the outer surface of 22 and shown along the length thereof are grooves 28 and 29 which spiral oppositely to form a knurled surface defining pyramidal projections.
  • FIGURE 2a shows this in longitudinal section and
  • FIGURE 2b shows the cross-sectional appearance resulting from 28 and 29 relative to the thickness of 22 and to the thickness of the strands of 16.
  • the grooves 28 and 29 define surfaces which are oblique to both the longitudinal axis and to the transverse axis of the cable.
  • the surfaces operate to resist both torsional and tensional loads developed in the cable and in the braided thereof.
  • ferrule 32 Fitted over extension 22 and extending back along the cable over the sheath 18 is ferrule 32 formed of malleable construction material. The length thereof extending out over the cable sheath 18 provides mechanical support to the cable to, in a sense, better isolate the initial area of contact from bending loads developed on the cable.
  • the rear edge of 32 includes a folded in portion 34 which, when the ferrule is crimped inwardly, forms a partial seal through an annular compression of the sheath 18; preferably without deforming the braid 16 or sheath 14.
  • the type of crimp preferred is known as an O crimp and is generally described in copending application, Serial No. 268,873, filed March 29, 1963, by F. B. Stark, now US. Patent No. 3,212,050, although it is contemplated that other types of crimps may be employed with the features of the invention.
  • the ferrule 32 is shown as a relatively thin member crimped inwardly to lock the strands of 16 within grooves 28.and 29.
  • a ferrule thickness is used sufficient for the ferrule to be crimped inwardly enough to cause the parts of material of 22 to bite into the ferrule material and lock the ferrule to the extension. This is shown in FIGURES 2a and 2b. As the ferrule material is driven inwardly, it entraps and works against the strands of 16 to break up any oxidation products on the surfaces of the ferrule bore, the extension outer surfaces and the braid to provide clean metal for forming a proper interface therebetween.
  • the knurled surface formed by grooves 28 and 29 defines a spiral which complements the spiral of the braid 16.
  • the strands of 16 are driven down into the grooves in a crossing and interlocking mesh so that tensional forces applied to the cable are resisted by definite portions of extension material. So too, with respect to torsional forces.
  • FIGURE 3 shows an alternative version of grooves which may be preferred with certain types of braid construction.
  • the grooves are shown as 40 and 42 applied to sleeve extension 22 in transverse and longitudinal series relative to the extension length.
  • an actual embodiment of the invention employed a ferrule of hard-drawn annealed copper approximately 10 thousandths of an inch in thickness.
  • the extension 22 was 25 thousandths of an inch in thickness overall and the grooves 28 and 29 were about 6 thousandths of an inch deep.
  • the grooves were spiraled at an angle of approximately 30 relative to the longitudinal axis of the connector.
  • a sample made accordingly resisted torsional stresses to an extent to break the attached cable Without disturbing the connection between cable and connector.
  • the ferrule would preferably be thicker out of a more malleable material so as to be worked well down into the grooves of the extension without cutting the foil.
  • the projections which are pyramidal in FIGURES 1a-2 may also be of other configurations to better work within the interstices of the braid.
  • the invention while developed with braid problems in mind can be used with cable having a solid metal outer conductor, such as, solid copper or aluminum.
  • the grooves would be made of a depth relative to the construction metal characteristics including thickness.
  • the embodiment of FIGURE 3 is preferred for such use.
  • the sleeve exterior has been shown with the grooves disposed along the length thereof. It is contemplated that the grooved portion may be made to extend for less than the entire extension length although it is preferred that such surface be at least of a length approximately the diameter of the cable.
  • a connector body including a metallic tubular member having a dielectric insert therein carrying a center contact member, said body including a rear conductive sleeve extension and a malleable ferrule member adapted to be fitted over said sleeve extension, the said cable being attached to said connect-or with the inner conductor thereof fitted within and terminated to said center contact member, the said extension having an outer diameter slightly larger than the inner diameter of said outer conductor and including an outer surface defined by a series of first and second grooves disposed thereon in a crossing relationship to define surfaces oblique to each other and a series of projecting points, said grooves being of a depth approxi mating the thickness of the strands of the said outer conductor, the said ferrule being of a thickness and inner diameter slightly larger

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US370793A 1964-05-28 1964-05-28 Crimped coaxial cable connection with knurled extension Expired - Lifetime US3296363A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL135009D NL135009C (xx) 1964-05-28
US370793A US3296363A (en) 1964-05-28 1964-05-28 Crimped coaxial cable connection with knurled extension
GB19962/65A GB1034398A (en) 1964-05-28 1965-05-12 Electrical connector for shielded cable
NL6506107A NL6506107A (xx) 1964-05-28 1965-05-13
FR18195A FR1434055A (fr) 1964-05-28 1965-05-24 Connecteur coaxial sertissable
DE1965A0049299 DE1465170A1 (de) 1964-05-28 1965-05-24 Elektrische Kupplung fuer abgeschirmte Kabel
ES0313381A ES313381A1 (es) 1964-05-28 1965-05-25 Un dispositivo conectador electrico.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US370793A US3296363A (en) 1964-05-28 1964-05-28 Crimped coaxial cable connection with knurled extension

Publications (1)

Publication Number Publication Date
US3296363A true US3296363A (en) 1967-01-03

Family

ID=23461206

Family Applications (1)

Application Number Title Priority Date Filing Date
US370793A Expired - Lifetime US3296363A (en) 1964-05-28 1964-05-28 Crimped coaxial cable connection with knurled extension

Country Status (6)

Country Link
US (1) US3296363A (xx)
DE (1) DE1465170A1 (xx)
ES (1) ES313381A1 (xx)
FR (1) FR1434055A (xx)
GB (1) GB1034398A (xx)
NL (2) NL6506107A (xx)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499101A (en) * 1968-08-23 1970-03-03 Amp Inc Outer conductor crimp for coaxial devices
US3781763A (en) * 1966-11-30 1973-12-25 Amp Domestic Inc Plugboard system
US4561716A (en) * 1982-12-21 1985-12-31 Siemens Aktiengesellschaft Coaxial connector
US4684201A (en) * 1985-06-28 1987-08-04 Allied Corporation One-piece crimp-type connector and method for terminating a coaxial cable
US4718854A (en) * 1986-12-18 1988-01-12 Amp Incorporated Low profile press fit connector
US4722590A (en) * 1983-03-23 1988-02-02 British Telecommunications Jointing armoured submarine cables
US5167520A (en) * 1991-10-18 1992-12-01 Amp Incorporated Cup fit plug connector
US6059611A (en) * 1998-05-04 2000-05-09 The Whitaker Corporation High temperature electrical connector assembly
US6062911A (en) * 1997-01-31 2000-05-16 The Whitaker Corporation Low profile power connector with high-temperature resistance
US20060063425A1 (en) * 2004-08-27 2006-03-23 Holliday Randall A Bulge-type coaxial cable termination assembly
US20070117437A1 (en) * 2005-01-10 2007-05-24 Perceptron, Inc. Detachable coupling for a remote inspection device
US20080194143A1 (en) * 2004-08-27 2008-08-14 Holliday Randall A Bulge-type coaxial cable connector
US20080248673A1 (en) * 2006-06-30 2008-10-09 Al Boehnlein Detachable coupling for a remote inspection device
US20100087105A1 (en) * 2008-10-02 2010-04-08 Gump Bruce S Electrical connection system for use on aluminum wires
US20100273351A1 (en) * 2004-08-27 2010-10-28 Holliday Randall A Bulge-type coaxial cable connector with plastic sleeve
US8535092B2 (en) 2004-08-27 2013-09-17 Belden Inc. Mini-coax cable connector
US20150075864A1 (en) * 2013-09-05 2015-03-19 Nexans Device for joining hybrid electrical transmission cables
US9049351B2 (en) 2010-05-03 2015-06-02 Inspectron, Inc. Insulator design for video inspection devices
US9281637B2 (en) 2004-08-27 2016-03-08 Ppc Broadband, Inc. Mini coax cable connector
WO2023247192A1 (en) 2022-06-20 2023-12-28 Huber+Suhner Ag Crimp neck

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3145032B1 (de) * 2015-09-21 2019-06-12 Nexans Anordnung mit einer elektrischen leitung und einem elektrischen kupplungsteil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184535A (en) * 1962-01-09 1965-05-18 Cable Covers Ltd Compression connector for joining wires
US3206540A (en) * 1963-05-27 1965-09-14 Cohen Jerome Coaxial cable connection
US3221290A (en) * 1963-03-21 1965-11-30 Amp Inc Coaxial connector featuring an improved seal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184535A (en) * 1962-01-09 1965-05-18 Cable Covers Ltd Compression connector for joining wires
US3221290A (en) * 1963-03-21 1965-11-30 Amp Inc Coaxial connector featuring an improved seal
US3206540A (en) * 1963-05-27 1965-09-14 Cohen Jerome Coaxial cable connection

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781763A (en) * 1966-11-30 1973-12-25 Amp Domestic Inc Plugboard system
US3499101A (en) * 1968-08-23 1970-03-03 Amp Inc Outer conductor crimp for coaxial devices
US4561716A (en) * 1982-12-21 1985-12-31 Siemens Aktiengesellschaft Coaxial connector
US4722590A (en) * 1983-03-23 1988-02-02 British Telecommunications Jointing armoured submarine cables
US4684201A (en) * 1985-06-28 1987-08-04 Allied Corporation One-piece crimp-type connector and method for terminating a coaxial cable
US4718854A (en) * 1986-12-18 1988-01-12 Amp Incorporated Low profile press fit connector
US5167520A (en) * 1991-10-18 1992-12-01 Amp Incorporated Cup fit plug connector
US6062911A (en) * 1997-01-31 2000-05-16 The Whitaker Corporation Low profile power connector with high-temperature resistance
US6059611A (en) * 1998-05-04 2000-05-09 The Whitaker Corporation High temperature electrical connector assembly
US8535092B2 (en) 2004-08-27 2013-09-17 Belden Inc. Mini-coax cable connector
US20060063425A1 (en) * 2004-08-27 2006-03-23 Holliday Randall A Bulge-type coaxial cable termination assembly
US7410389B2 (en) 2004-08-27 2008-08-12 Holliday Randall A Bulge-type coaxial cable termination assembly
US20080194143A1 (en) * 2004-08-27 2008-08-14 Holliday Randall A Bulge-type coaxial cable connector
US10305234B2 (en) 2004-08-27 2019-05-28 Ppc Broadband, Inc. Mini coax cable connector
US9755378B2 (en) 2004-08-27 2017-09-05 Ppc Broadband, Inc. Mini coax cable connector
US9281637B2 (en) 2004-08-27 2016-03-08 Ppc Broadband, Inc. Mini coax cable connector
US7727015B2 (en) 2004-08-27 2010-06-01 Holliday Randall A Bulge-type coaxial cable connector
US20100273351A1 (en) * 2004-08-27 2010-10-28 Holliday Randall A Bulge-type coaxial cable connector with plastic sleeve
US8075339B2 (en) 2004-08-27 2011-12-13 Belden Inc. Bulge-type coaxial cable connector with plastic sleeve
US7384308B2 (en) * 2005-01-10 2008-06-10 Perceptron, Inc. Detachable coupling for a remote inspection device
US20070117437A1 (en) * 2005-01-10 2007-05-24 Perceptron, Inc. Detachable coupling for a remote inspection device
US20080248673A1 (en) * 2006-06-30 2008-10-09 Al Boehnlein Detachable coupling for a remote inspection device
US7581988B2 (en) 2006-06-30 2009-09-01 Perceptron, Inc. Detachable coupling for a remote inspection device
US7722416B2 (en) 2008-10-02 2010-05-25 Delphi Technologies, Inc. Electrical connection system for use on aluminum wires
US20100087105A1 (en) * 2008-10-02 2010-04-08 Gump Bruce S Electrical connection system for use on aluminum wires
US9049351B2 (en) 2010-05-03 2015-06-02 Inspectron, Inc. Insulator design for video inspection devices
US20150075864A1 (en) * 2013-09-05 2015-03-19 Nexans Device for joining hybrid electrical transmission cables
US9379531B2 (en) * 2013-09-05 2016-06-28 Nexans Device for joining hybrid electrical transmission cables
WO2023247192A1 (en) 2022-06-20 2023-12-28 Huber+Suhner Ag Crimp neck

Also Published As

Publication number Publication date
NL135009C (xx) 1972-09-15
ES313381A1 (es) 1965-12-16
DE1465170A1 (de) 1968-12-05
GB1034398A (en) 1966-06-29
FR1434055A (fr) 1966-04-01
NL6506107A (xx) 1965-11-29

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