EP0020188B1 - Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel - Google Patents

Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel Download PDF

Info

Publication number
EP0020188B1
EP0020188B1 EP19800400458 EP80400458A EP0020188B1 EP 0020188 B1 EP0020188 B1 EP 0020188B1 EP 19800400458 EP19800400458 EP 19800400458 EP 80400458 A EP80400458 A EP 80400458A EP 0020188 B1 EP0020188 B1 EP 0020188B1
Authority
EP
European Patent Office
Prior art keywords
clamp member
braid
conductor
insulating layer
nut
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
Application number
EP19800400458
Other languages
English (en)
French (fr)
Other versions
EP0020188A3 (en
EP0020188A2 (de
Inventor
Donald Hollenbeck Gould
James Joseph Karol
Allan Black Kirby
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.)
Bendix Corp
Original Assignee
Bendix 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 Bendix Corp filed Critical Bendix Corp
Publication of EP0020188A2 publication Critical patent/EP0020188A2/de
Publication of EP0020188A3 publication Critical patent/EP0020188A3/en
Application granted granted Critical
Publication of EP0020188B1 publication Critical patent/EP0020188B1/de
Expired legal-status Critical Current

Links

Images

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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • This invention relates to an electrical connector for a coaxial cable terminating at a free end and including a central conductor, an insulating layer surrounding the central conductor, a braid conductor surrounding the insulating layer, and a protective sheath surrounding the braid conductor, this electrical conductor comprising a terminal body, a clamp member disposed within the terminal body and a nut assembling the clamp member to the terminal body, the clamp member including a tapered surface, and a bore for receiving the central conductor and the insulating layer and extending between a forward face and a rear face.
  • the prior art coaxial terminations lack a design which has few parts, is easy and quick to assemble at low cost, and yet resists outward axial movement of the clamp member, even before the nut and body are assembled.
  • the present invention overcomes the disadvantages and limitations of the prior art arrangements by providing an electrical connector for a coaxial cable terminating at a free end and including a central conductor, an insulating layer surrounding the central conductor, a braid conductor surrounding the insulating layer, and a protective sheath surrounding the braid conductor, said electrical connector comprising a terminal body, a clamp member disposed within the terminal body and a nut assembling the clamp member to the terminal body, the clamp member including an outer a tapered surface, a bore for receiving the central conductor and the insulating layer and extending between a forward face and a rear face, and a helical groove described by a series of undercuts disposed on the tapered surface such that an edge of each undercut provides a corner surface which engages the braid conductor after -the central conductor and the insulating layer have been received in the bore and the clamp member rotated to draw the tapered surface of said clamp member between the insulating layer and the braid conductor.
  • the electrical connector of the present invention is advantageous in that it provides an arrangement which is easy and quick to assemble, and resists outward movement of the clamp member prior to complete assembly of the connector and cable.
  • the co-axial cable 10 includes a central electrical conductor 12, an outer braid conductor 14, and a layer of di-electric material 16 between the central conductor 12 and the braid conductor 14.
  • An outer jacket 18 surrounds the conductors.
  • the outer jacket 18 and the dielectric material 16 are both made of electrically insulating materials to electrically isolate the conductors 12, 14 from each other and from the environment.
  • the coaxial connector 100 in its preferred embodiment, has three components which are supplied and handled as separate pieces: a forward body 200, an internal clamp member 300 and a rear nut 400.
  • the forward body 200 is of conventional design and includes a mating central contact 210 surrounded by an electrically insulating material 220.
  • An outer electrical contact 230 is disposed outside the insulating material 220, electrically isolated from the central contact 210.
  • the body 200 includes an internal thread 240 at the rear end thereof for coupling to the nut 400.
  • the clamp member 300 includes an electrically conductive body 310 and an insulator 320.
  • the insulator 320 fits within an undercut portion 312 extending rearwardly from the front end of the conductive body.
  • the insulator 320 electrically isolates the exposed portion of the central conductor 12 of the cable and the contact 210 from the body 310.
  • the insulator 320 is retained within the undercut in a known manner (e.g., adhesively or frictionally, through pressing in a member in an interference fit).
  • the nut 400 may be of the type described in U.S. Patent 3,373,243.
  • the nut 400 includes a rear portion 410 which is grasped during installation and an external screw thread 420 located forward of the rear portion 410.
  • the screw thread 420 engages the thread 240 of the body 200 to secure the connector assembly 100 together.
  • the nut 400 includes a central aperture 430 through which the cable 10 extends.
  • the nut 400 also includes steps 440 which provide increasingly larger diameters of the central aperture 430 in the forward region of the nut.
  • steps 440 which provide increasingly larger diameters of the central aperture 430 in the forward region of the nut.
  • Such steps when used in conjunction with a clamp as described in the present design having a frusto-conical surface of increasing diameter, enables the connector 100, when assembled, to retain the cable 10 therein by engaging the jacket 18 and thereby providing resistance to decoupling forces applied on the cable. The engagement occurs between the steps and the frusto-conical surface.
  • FIG. 2 is an enlarged view of the external surface of the clamp body 310 of the present invention.
  • the clamp body 310 has a forward portion 313 of a larger diameter and a rear frusto-conical portion 314.
  • the portion 314 increases in size from a smaller rear end 314a to a larger forward end 314b, where it meets the larger forward portion 313.
  • a helical groove 316 spirals around the frusto-conical portion 314, making several revolutions.
  • a spiral in a form similar to a raised (exposed) screw thread could be used to advantage in the present design, the form claimed is a quicker and less expensive approach which is shown in these drawings, that is, to form or cut a groove 316 into the outer surface, which requires the removal of less material.
  • the formation of the helical groove is advantageously formed on an automatic screw machine.
  • Other methods of fabrication such as stamping and rolling, casting, forging and spinning could also be used to advantage to create the clamp 300 of the present invention. Using such other methods of fabrication may make it easier and less expensive to have exposed threads.
  • the pitch and depth of the helical groove are somewhat a matter of design choice. It has been found that a continuous spiral of 40 pitch, 13/100 mm deep, right handed buttress type thread works to advantage. Lefthanded threads could be substituted and used to advantage in the present design although they would be unconventional and more difficult to install manually, as an operator is accustomed to install a Screw member with right handed threads.
  • the threads on the nut 400 should be of the same type (i.e., right-handed) as on the clamp so that the application of the nut does not tend to uncouple the clamp from the braid.
  • Figure 3 shows a cross sectional view of the clamp body 310 without the insulator.
  • the forward undercut portion 312 for receiving the insulator is shown, as are the enlarged forward portion 313, the helical groove 316 and the frusto-conical tapering portion 314.
  • Figure 4 shows a cross sectional view of the clamp member 300 (with body 310 and insulator 320) being inserted over the "square cut" cable 10.
  • the nut 400 has already been inserted over the cable 10 and is moved to the rear of the forward end of the cable, away from the area of the cable upon which the clamp 300 will be applied.
  • the body 310 of the clamp and the insulator 320 each have a central aperture (311 and 321, respectively).
  • the central aperture 311 of the clamp is large enough to receive the layer of insulation 16 of the cable 10, while the aperture 321 in the insulator is smaller, merely large enough to receive the central conductor 12 therein.
  • the cable 10 has been prepared in a manner which is referred to as a "square cut" in the industry.
  • the square cut preparation has the central conductor 12 extending forwardly of the rest of the cable (outer layers: insulation 16, braid conductor 14, and jacket 18), all of which extend a uniform but lesser, distance forward.
  • the outer rear surface of the clamp 300 has been pressed between the layer of insulation 16 and the braid conductor 14, urging the braid conductor 14 and the jacket radially outward slightly.
  • the helical groove 316 is in contact with the braid conductor 14, and because the braid conductor 14 is being urged radially inward by the surrounding jacket 18, the braid conductor 14 is urged partially into the groove 316.
  • the groove 316 coacts with the braid conductor 14 to draw the body 310 further in, in the nature of a screw being drawn into wood as it rotates.
  • the body 310 is retained by the groove 316 against undesirable axial movement out of the cable 10 because the braid conductor 14 is engaged in the groove 316.
  • Figure 5 shows the clamp 300 when the body 310 fully engages the cable 10.
  • the braid conductor 14 and the jacket 18 extend forwardly on the clamp to the enlarged portion 313 thereof, fully covering the tapering frusto-conical portion 314, with the helical groove 316 being embedded along its length within the braid conductor 14.
  • the insulation layer 16 is well forward within the clamp body in the central aperture thereof.
  • Figure 6 is a cross sectional view showing a portion of the clamp body 310 with the thread or helical groove 316 shown.
  • the helical groove 316 shown here is "U" shaped and has corners 316a, 316b at the meeting of the groove with the external surface.
  • the rear or trailing corner 316b will engage or "bite into” the braid conductor and prevent it from moving rearwardly, even if the cable is pulled rearwardly with respect to the connector.
  • a portion of the braid conductor will be forced into the groove, providing a more reliable and uniform electrical connection between the braid conductor and the connector.
  • grooves and threads could be used-either exposed external threads, discontinuous grooves, or varying shapes of grooves-the threads of the type shown in Figure 6 are the preferred embodiment as they can be formed quite easily on automatic screw machines.
  • the threads could be formed using other techniques.
  • Figures 7 and 8 show alternate embodiments of helical threads 316' and 316", where the threads are "V" shaped. These threads are also formable on automatic screw machines with a slightly different tool.
  • a leading corner 316a' is flatter than the leading corner 316a of Figure 6 to bite into the braid.
  • the "V” is substantially symmetrical with respect to the surface of the body, giving a front corner 316a" and a rear corner 316b" between which the braid is forced. The rear corner 316b" does most of the engagement of the braid in this instance.
  • Figure 9 shows an alternative embodiment of the connector 100 of the present invention.
  • this embodiment has a rear nut 500 of the type shown in U.S. Patent No. 3,634,815.
  • the nut 500 in this embodiment includes a resilient member 510 having a frusto-conical forward bore 512, with sealing members 520, 530 located forward and rearward of the resilient member 510. Since the structure of the nut is of only peripheral concern to the present invention, other nut structures could also be used to advantage.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (4)

1. Elektrischer Stecker für ein Koaxialkabel (10), das an einem freien Ende endet und einen zentralen Leiter (12), eine den zentralen Leiter (12) umgebende Isolierschicht (16), einen die Isolierschicht (16) umgebenden geflochteten Leiter (14) und eine den geflochtenen Leiter (14) umgebende Schutzhülle (18) umfaßt, wobei der elektrische Leiter (100) aufweist: einen Anschlußkörper (200), ein Klemmstück (300), das innerhalb des Anschlußkörpers (200) angeordnet ist, und eine Mutter (400), die das Klemmstück (300) mit dem Anschlußkörper (200) verbindet, wobei das Klemmstück (300) eine abgeschrägte Außenfläche (314) und eine zwischen einer vorderen Stirnfläche und einer rückwärtigen Stirnfläche verlaufende Bohrung zur Aufnahme des zentralen Leiters (12) und der Isolierschicht (16) umfaßt, dadurch gekennzeichnet, daß das Klemmstück (300) eine schraubenförmige Nut (316) aufweist, die von einer Reihe von Hinterschneidungen gebildet wird, die auf der abgescrägten Fläche (314) so angeordnet sind, daß ein Rand jeder Hinterschneidung eine Ecke (316a, 316b) bildet, die am geflochtenen Leiter (14) angreift, nachdem der zentrale Leiter (12) und die Isolierschicht (16) in der Bohrung aufgenommen worden sind und das Klemmstück (300) gedreht worden ist, um die abgeschrägte Fläche des Klemmstückes (300) zwischen die Isolierschicht (16) und den geflochtenen Leiter (14) zu ziehen.
2. Elektrischer Stecker nach Anspruch 1, dadurch gekennzeichnet, daß die Außenfläche des Klemmstückes (300) kegelstumpfförmig ausgebildet ist, wobei das größere Ende dem freien Ende des Koaxialkabels (10) zugewandt ist.
3. Elektrischer Stecker nach Anspruch 1, bei dem die Mutter (400) und der Anschlußkörper (200) durch Gewinde (420, 240) miteinander verbunden sind, dadurch gekennzeichnet, daß die zur Befestigung der Mutter (400) am Anschlußkörper (200) erforderliche Drehung der Mutter (400) so gerichtet ist, daß die Reihen von Hinterschneidungen in Richtung eines stärkeren Eingriffs zwischen Klemmstück (300) und geflochtenem Leiter (14) gedrückt werden.
4. Verfahren zum Verbinden des elektrischen Steckers nach Anspruch 1 mit dem Ende des Koaxialkabels, gekennzeichnet durch folgende Schritte: die Schutzhülle, der geflochtene Leiter und die Isolierschicht des Koaxialkabels werden senkrecht zu deren Achse zu einer im wesentlichen gleichförmigen Länge, die kleiner ist als die des zentralen Leiters, geschnitten; die Mutter wird gleitend über das Koaxialkabel geschoben; der zentrale Leiter und die Isolierschicht werden in die Bohrung des Klemmstückes und ein Teil der abgeschrägten Fläche des Klemmstückes zwischen die Isolierschicht und den geflochtenen Leiter eingesetzt; das Klemmstück wird in Richtung der schraubenförmigen Nut gedreht, um das Klemmstück fortschreitend tiefer in das Geflecht zu ziehen, bis die gesamte abgeschrägte Fläche sich innerhalb des Geflechtes befindet, und die Mutter und der Anschlußkörper werden auf das Klemmstück montiert, um den elektrischen Kontakt herzustellen und das Klemmstück dazwischen zu halten.
EP19800400458 1979-05-23 1980-04-04 Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel Expired EP0020188B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4166779A 1979-05-23 1979-05-23
US41667 2002-01-10

Publications (3)

Publication Number Publication Date
EP0020188A2 EP0020188A2 (de) 1980-12-10
EP0020188A3 EP0020188A3 (en) 1981-01-14
EP0020188B1 true EP0020188B1 (de) 1983-02-09

Family

ID=21917707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800400458 Expired EP0020188B1 (de) 1979-05-23 1980-04-04 Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel

Country Status (4)

Country Link
EP (1) EP0020188B1 (de)
JP (1) JPS55159579A (de)
CA (1) CA1141834A (de)
DE (1) DE3061857D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1145430A (en) * 1980-06-02 1983-04-26 James J. Karol Method of and electrical termination for coaxial cable
EP0140185A3 (de) * 1983-11-01 1985-07-10 Allied Corporation Koaxialkabel-Verbinder mit Erdung und Anschlussstecker
JP2707302B2 (ja) * 1987-01-20 1998-01-28 アンプ インコーポレーテッド タップ形電気コネクタ組立体
US4744775A (en) * 1987-02-12 1988-05-17 Amp Incorporated Electrical tap connector assembly
US4825021A (en) * 1987-02-12 1989-04-25 Amp Incorporated Electrical tap connector assembly
JPH0247781U (de) * 1988-09-27 1990-04-03
FR2667731B1 (fr) * 1990-10-05 1993-03-26 Itt Composants Instr Connecteur electrique blinde, etanche et isole electriquement.
FR2671434A1 (fr) * 1991-01-04 1992-07-10 Berault Michel Dispositif de connexion electrique pour relier un cable et un appareil.
GB9101685D0 (en) * 1991-01-25 1991-03-06 Ramm Stephen G Outdoor lighting system
JP2001505711A (ja) * 1996-11-29 2001-04-24 マイクロプロジェクト デイ カパニ エル．アンド シー．エス．エヌ．シー． 電気通信システムの同軸コネクタのためのスリーブ、同軸ケーブルおよびメス同軸コネクタの配置構成
US6497587B2 (en) 1996-11-29 2002-12-24 Microproject Di Campani L. & C. S.N.C. Connector coupled by pressure for telecommunications systems
JP4649213B2 (ja) * 2004-03-08 2011-03-09 株式会社オートネットワーク技術研究所 シールドワイヤーハーネスの製造方法及びシールドケーブルの端末構造
RU210673U1 (ru) * 2021-12-07 2022-04-26 Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" Узел заделки экранирующей оплетки кабеля
CN114678717B (zh) * 2022-03-10 2023-09-22 中国航天时代电子有限公司 一种真空大功率低pim射频连接器
CN115332893B (zh) * 2022-10-17 2023-02-28 天津市路灯管理处 一种导线接头机构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264602A (en) * 1964-03-13 1966-08-02 Automatic Metal Products Corp Electrical connectors for coaxial cables
US3373243A (en) * 1966-06-06 1968-03-12 Bendix Corp Electrical multiconductor cable connecting assembly
DE2159867A1 (de) * 1971-12-02 1973-06-07 Spinner Georg Koaxialstecker fuer koaxialkabel mit volldielektrikum
IT998613B (it) * 1973-09-14 1976-02-20 Sits Soc It Telecom Siemens Connettore per collegamenti provvi sori di tipo volante tra un cavo coassiale rigido e un cavo coassia le flessibile
US4070751A (en) * 1977-01-12 1978-01-31 Amp Incorporated Method of making a coaxial connector
US4135776A (en) * 1977-01-28 1979-01-23 E. F. Johnson Company Solderless coaxial cable connector

Also Published As

Publication number Publication date
EP0020188A3 (en) 1981-01-14
JPS55159579A (en) 1980-12-11
DE3061857D1 (en) 1983-03-17
EP0020188A2 (de) 1980-12-10
CA1141834A (en) 1983-02-22

Similar Documents

Publication Publication Date Title
CA2710220C (en) Connector assembly with gripping sleeve
EP0020188B1 (de) Elektrischer Stecker für ein Koaxialkabel und Verfahren zum Verbinden dieses Steckers mit einem Koaxialkabel
US7252546B1 (en) Coaxial cable connector with replaceable compression ring
EP2162956B1 (de) Steckverbinderanordnung mit greifhülse
CA2897701C (en) Hardline coaxial connector with a locking ferrule
US7452237B1 (en) Coaxial cable compression connector
EP1935061B1 (de) Koaxialkabelverbinder
CA2687674C (en) Hard-line coaxial cable connector with slotted shaft
JP4510770B2 (ja) ケーブル把持部を備える同軸コネクタ
US7008263B2 (en) Coaxial cable connector with deformable compression sleeve
US5456614A (en) Coaxial cable end connector with signal seal
EP0167738A2 (de) Elektrischer Verbinder mit Mitteln zum Festklemmen eines Koaxialkabels
CA2140308A1 (en) Twist-on coaxial cable end connector with internal post
US6309258B1 (en) Single pole cable connector
EP2600468A2 (de) Koaxialer Kabelsteckverbinder zum Sichern von Kabeln durch axiales Zusammendrücken
GB2264400A (en) Connecting the core of a coaxial cable to a contact of a connector.
US11646530B2 (en) Coaxial cable connector sleeve with cutout
JP3386156B2 (ja) 同軸コネクタ
US4325599A (en) Phone plug
CA1145430A (en) Method of and electrical termination for coaxial cable
JP2606411Y2 (ja) 中空線の接続構造

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB IT

AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19800422

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 3061857

Country of ref document: DE

Date of ref document: 19830317

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840405

Year of fee payment: 5

Ref country code: DE

Payment date: 19840405

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19861231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT