EP0140185A2 - Koaxialkabel-Verbinder mit Erdung und Anschlussstecker - Google Patents

Koaxialkabel-Verbinder mit Erdung und Anschlussstecker Download PDF

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Publication number
EP0140185A2
EP0140185A2 EP84111695A EP84111695A EP0140185A2 EP 0140185 A2 EP0140185 A2 EP 0140185A2 EP 84111695 A EP84111695 A EP 84111695A EP 84111695 A EP84111695 A EP 84111695A EP 0140185 A2 EP0140185 A2 EP 0140185A2
Authority
EP
European Patent Office
Prior art keywords
face
thread
ferrule
shell
braid
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.)
Withdrawn
Application number
EP84111695A
Other languages
English (en)
French (fr)
Other versions
EP0140185A3 (de
Inventor
Allan Black Kirby
Edward Patrick Hogan
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.)
Allied Corp
Original Assignee
Allied Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allied Corp filed Critical Allied Corp
Publication of EP0140185A2 publication Critical patent/EP0140185A2/de
Publication of EP0140185A3 publication Critical patent/EP0140185A3/de
Withdrawn legal-status Critical Current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
    • 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
    • H01R9/0521—Connection to outer conductor by action of a nut

Definitions

  • This invention relates to an electrical connector assembly including means for grounding and terminating a free end of a coaxial cable, the coaxial cable being of the type including a dielectric separating .a central conductor from a conductive braid and including an insulator jacket surrounding the shield conductor.
  • U.S. Patent 3,373,243 issuing March 12, 1968 to Janowiak for "An Electrical Multi-Conductor Cable Connecting Assembly”
  • U.S. Patent 3,634,815 issuing January 11, 1971 to Stevens for "A Connector Assembly Adapted For Use With A Coaxial Cable,” assigned to the assignee of the instant application, and
  • U.S. Patent 3,074,045 issuing January 15, 1963 to Overholser for a "Cable Connector and Method of Assembly” provided a conductive frusto-conical ferrule for terminating the free end of a coaxial cable and grounding the cable braid to the connector shell.
  • the manner in which and the force by which a connector assembly grips and/or clamps the coaxial cable may be responsible for an electrical open circuit developing between the braid shield and the connector shell.
  • the insulator jacket has been found to flow and/or relax and the conductive ferrule axially backing off from abutting contact with the connector shell, thereby leading to the open circuit. Clearance fitting of the ferrule in the shell provides an inadequate conductive path for shielding and provision of a resilient or rubber-like seal member between'the shell and ferrule prevents shielding altogether.
  • a more desirable electrical connector assembly for use with a coaxial cable would reliably maintain closed circuit relationship between the conductive braid of the cable and the connector shell.
  • An object of the instant invention is to provide an electrical connector assembly for terminating a coaxial cable which offers good radio frequency interference shielding performance coupled with ease of assembly.
  • Another object of the instant invention is to provide a coaxial electrical termination having redundant means for shielding against radio frequency interference.
  • Still another object is to provide an improved termination requiring only a minimum of redesign of an existing termination.
  • a conductive cylindrical shell having an interior cavity receiving a conductive ferrule, a collar and the free end of a coaxial cable, the shell having internal thread adjacent the entry to its cavity engaging external thread on the collar, the collar and ferrule being disposed about the cable end with the insert being wedged between the braid shield and the dielectric and the collar being disposed against the jacket.
  • a ground arrangement for grounding the braid shield to the connector shell includes the interior wall of the shell having internal thread and an interior end wall, and the ferrule having a stepped annular shoulder defining spaced end faces and circumferential faces, one of the circumferential faces being provided with external thread, the external thread being adapted to threadably interengage with the internal thread whereby the end wall may be axially, threadably, drawn together into abutment with one of the end faces and be disposed in metal-to-metal contact, both the engaged thread and the end face being abutted with the end wall providing a redundant electrical path between the braid and connector shell.
  • the coaxial cable 30 is of the type which comprises a central conductor 32, a dielectric 34, an outer conductor or braid shield 36 and an external rubber insulator jacket 38, each being coaxial one with the other.
  • the plug electrical connector 10 comprises a hollow cylindrical shell 12 of electrically conductive material; a tubular collar 20 having external thread 28 and a radial flange 22 extending outwardly therefrom; and a tubular ferrule 40, the ferrule and the collar being coaxially received in the shell so as to be generally concentric with central conductor 32 with each cooperating to clamp about the cable.
  • the connector shell 12 has a primary axis, an external end face 14, and an interior cavity which includes a generally cylindrical interior wall that terminates at an end wall 16 transverse to its primary axis, the interior cavity receiving ferrule 40 and collar 20 and the interior wall including internal thread 18 therearound.
  • Collar 20 includes a tubular sleeve 26 which has successively increasing internal diameter sections 26a, 26b, and 26c which define shoulders whose edges trace an imaginary cone and bite against the jacket 38.
  • Ferrule 40 is of electrically conductive material and includes a frusto-conical, wedge-shaped body 42, an annular flange 48 having an end face 46 and an internal bore 44 extending axially therethrough, the diameter of internal bore 44 being slightly greater than the external diameter of dielectric 34.
  • Ferrule 40 and collar 20 are disposed about the free end of the cable with ferrule body 42 being wedged between dielectric 34 and outer conductor 36 and collar 20 being driven into engagement with the cable jacket, the body applying an outward radial pressure to both the braid shield 36 and the rubber jacket 38 and the shoulders defined by diameter sections 26a, 26b and 26c axially engaging cable jacket 38.
  • Radio frequency interference protection must come as a result of metal-to-metal contact between end face 46 of ferrule 40 and end wall 16 of shell 12, the metal contact providing a continuous electrical circuit path between plug shell 12 and braid shield 36. Temperature effects on jacket 38 could allow axial back-off of the ferrule from metal-to-metal contact.
  • FIGURE 2 shows improved RFI shielding connection between plug connector 10 and coaxial cable 30.
  • Shell 12 includes end wall 16 and internal thread 18.
  • Ferrule 40 includes adjacent its end face 46 a stepped annular shoulder 52 spacing an end face 46' therefrom and defining, respectively, a first circumferential face around annular shoulder 52 and a second circumferential face around annular flange 48, the circumferential face around flange 48 including external thread 54 and the circumferential face around shoulder 52 being without external thread.
  • the end faces 46, 46' of ferrule 40 and end wall 16 of shell 12 are disposed, respectively, in a plane perpendicular and inclined to the primary axis of the connector and end wall 16 is adapted to abut end face 46 when assembled into the shell.
  • the internal thread 18 is adapted to engage with the external thread 54 and the external thread 28 on collar 16.
  • the internal/external thread provide thread surfaces which contact to increase frictional forces resisting any rotation of the ferrule leading to axial back-off from metal-to-metal contact.
  • tight abutment of end wall 16 with the end face 46 also enhances frictional forces tending to resist rotation.
  • the wedge-shaped frusto-conical body 42 includes helical cam surfaces 58, such as thread, about its exterior surface to threadably engage with shield braid 36 when the wedge-shaped body is axially, rotatably, inserted between the dielectric and outer conductor braid. Such cam surfaces cooperate to resist external axial pull forces which may act on the cable.
  • the annular shoulder 52 would be hexagonal in cross-section to assist the threadable assembly of ferrule 40 into the braid 36.
  • the end wall 16 is abutting the end face 46 to provide a first ground path and the internal/external thread 18, 54 are engaging to provide a second ground path.
  • the sense of all threads 18, 54 and 58 would, preferably, be the same so that when ferrule 40 is threaded either into braid shield 36 or into shell 12 or when the collar 16 is threadably inserted into the shell, all thread engagements are further tightened.
  • the cable 30 is trimmed to provide a square-cut free end for termination.
  • Collar 20 is then slipped over the cable and positioned axially rearward of the square-cut end and ferrule 40 is threadably inserted between the braid shield 36 and dielectric 34.
  • a contact pin 60 is passed over a bare projecting end of central conductor 32 and soldered thereto.
  • shell 12 is joined to the cable passing over ferrule 40.
  • Collar 20 is screwed into the sleeve 12 and its end face 24 brought into engagement with the end face 14 and the jacket 38.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
EP84111695A 1983-11-01 1984-10-01 Koaxialkabel-Verbinder mit Erdung und Anschlussstecker Withdrawn EP0140185A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54769483A 1983-11-01 1983-11-01
US547694 1983-11-01

Publications (2)

Publication Number Publication Date
EP0140185A2 true EP0140185A2 (de) 1985-05-08
EP0140185A3 EP0140185A3 (de) 1985-07-10

Family

ID=24185745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111695A Withdrawn EP0140185A3 (de) 1983-11-01 1984-10-01 Koaxialkabel-Verbinder mit Erdung und Anschlussstecker

Country Status (4)

Country Link
EP (1) EP0140185A3 (de)
JP (1) JPS60112277A (de)
CA (1) CA1220256A (de)
IL (1) IL73196A0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199197A (en) * 1986-11-25 1988-06-29 Georg Spinner A coaxial cable connector male plug
EP0517034A2 (de) * 1991-06-04 1992-12-09 Andrew A.G. Verbinder für Koaxialkabel mit einem schraubenförmig gewellten Innenleiter
EP1935061A2 (de) * 2005-09-23 2008-06-25 Corning Gilbert Inc. Koaxialkabelverbinder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5582870B2 (ja) * 2010-05-25 2014-09-03 日本航空電子工業株式会社 コネクタ
JP6587412B2 (ja) * 2015-04-16 2019-10-09 東京特殊電線株式会社 高周波同軸ケーブルと同軸型コネクタとの接続構造

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074045A (en) * 1960-03-21 1963-01-15 Tamar Electronics Ind Cable connector and method of assembly
GB942143A (en) * 1959-07-28 1963-11-20 Amphenol Borg Electronics Corp Coaxial connectors
US3373243A (en) * 1966-06-06 1968-03-12 Bendix Corp Electrical multiconductor cable connecting assembly
FR1593198A (de) * 1968-11-05 1970-05-25
US3963321A (en) * 1973-08-25 1976-06-15 Felten & Guilleaume Kabelwerke Ag Connector arrangement for coaxial cables
EP0020188A2 (de) * 1979-05-23 1980-12-10 The Bendix Corporation Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB942143A (en) * 1959-07-28 1963-11-20 Amphenol Borg Electronics Corp Coaxial connectors
US3074045A (en) * 1960-03-21 1963-01-15 Tamar Electronics Ind Cable connector and method of assembly
US3373243A (en) * 1966-06-06 1968-03-12 Bendix Corp Electrical multiconductor cable connecting assembly
FR1593198A (de) * 1968-11-05 1970-05-25
US3963321A (en) * 1973-08-25 1976-06-15 Felten & Guilleaume Kabelwerke Ag Connector arrangement for coaxial cables
EP0020188A2 (de) * 1979-05-23 1980-12-10 The Bendix Corporation Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199197A (en) * 1986-11-25 1988-06-29 Georg Spinner A coaxial cable connector male plug
EP0517034A2 (de) * 1991-06-04 1992-12-09 Andrew A.G. Verbinder für Koaxialkabel mit einem schraubenförmig gewellten Innenleiter
EP0517034A3 (en) * 1991-06-04 1993-09-01 Andrew A.G. Connector for coaxial cable having a helically corrugated inner conductor
EP1935061A2 (de) * 2005-09-23 2008-06-25 Corning Gilbert Inc. Koaxialkabelverbinder
EP1935061A4 (de) * 2005-09-23 2010-08-11 Corning Gilbert Inc Koaxialkabelverbinder

Also Published As

Publication number Publication date
EP0140185A3 (de) 1985-07-10
IL73196A0 (en) 1985-01-31
JPS60112277A (ja) 1985-06-18
CA1220256A (en) 1987-04-07

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Inventor name: HOGAN, EDWARD PATRICK

Inventor name: KIRBY, ALLAN BLACK