EP0014639A1 - Verfahren zur Vorbereitung des Endes eines biegsamen Koaxialkabels sehr hoher Frequenz für das Anbringen eines Verbindungselementes - Google Patents

Verfahren zur Vorbereitung des Endes eines biegsamen Koaxialkabels sehr hoher Frequenz für das Anbringen eines Verbindungselementes Download PDF

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Publication number
EP0014639A1
EP0014639A1 EP80400149A EP80400149A EP0014639A1 EP 0014639 A1 EP0014639 A1 EP 0014639A1 EP 80400149 A EP80400149 A EP 80400149A EP 80400149 A EP80400149 A EP 80400149A EP 0014639 A1 EP0014639 A1 EP 0014639A1
Authority
EP
European Patent Office
Prior art keywords
braid
cable
sleeve
sheath
ribbon
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.)
Granted
Application number
EP80400149A
Other languages
English (en)
French (fr)
Other versions
EP0014639B1 (de
Inventor
Jacques Cartier
Sébastien Givelet
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.)
Radiall Industrie Te Rosny-S SA
Original Assignee
Radiall SA
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 Radiall SA filed Critical Radiall SA
Publication of EP0014639A1 publication Critical patent/EP0014639A1/de
Application granted granted Critical
Publication of EP0014639B1 publication Critical patent/EP0014639B1/de
Expired 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
    • 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
    • H01R24/56—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 specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
    • H01R24/562—Cables with two screens
    • 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
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49123—Co-axial cable
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49169—Assembling electrical component directly to terminal or elongated conductor
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49179—Assembling terminal to elongated conductor by metal fusion bonding

Definitions

  • the present invention relates to a method for preparing the end of a flexible very high frequency coaxial cable for the installation of a connector element.
  • More and more are used for the transmission of energy at very high frequency, for example of the order of 18 GHz, to replace relatively rigid coaxial elements which do not lend themselves to many applications, in particular in aeronautics, cables flexible coaxial.
  • Such flexible coaxial cables usable at very high frequencies usually comprise a multi-strand central conductor, in particular in silver-plated copper, and two external conductors, the first formed from a ribbon wound in particular in silver-plated copper, the second of a braid also made of copper silver on the outside of the ribbon. Between the central conductor and the first external conductor is disposed a dielectric, in particular aerated or solid polytetrafluoroethylene (PTFE). Finally, around the second external conductor is an external sheath, in particular made of extruded PTFE, ensuring mechanical and chemical protection of the cable. This sheath also keeps the ribbon constituting the first external conductor wound at the ends of the cable.
  • PTFE polytetrafluoroethylene
  • the coiled ribbon constituting the first external conductor allows continuity which ensures low losses and good screen efficiency.
  • the second outer conductor in the form of a braid reduces the resistive losses at low frequencies when the penetration of the currents (skin effect) is greater than the thickness of the ribbon.
  • the braid mechanically protects the ribbon during the sheath extrusion operation.
  • the braid also serves as mechanical reinforcement for the cable.
  • the present invention proposes to carry out a method for preparing the end of such a flexible coaxial cable at very high frequency, for the installation of a connector element, easy and quick to implement, making it possible to carry out between the cable and the connector a connection retaining the high frequency characteristics of the cable and resistant to the mechanical stresses exerted on the cable relative to the connector.
  • the method according to the invention is essentially characterized by the fact that the end of the cable is first punched in several notches, in particular two or four, through the outer sheath so as to permanently deform the wound ribbon. Then, cut and remove a section of the outer sheath, cut the braid to the right of the cut end of the sheath to strip a certain length of wound tape, cut and remove another section of the outer sheath at beyond the cut end of the braid so as to strip a certain length thereof, we introduce a sleeve having an end flange under the braid, we put in place on the sheath and the stripped part of the braid a ferrule to be crimped, the ferrule is crimped, the sleeve is welded at its end flange on the wound ribbon, after which the part of the ribbon is unwound beyond the flange of the sleeve and the ribbon is cut and then the dielectric flush with said flange leaving stripped a section of inner conductor.
  • the end of the cable thus prepared is then placed in a conventional connector element, by placing on the stripped central conductor of the end of the cable an insulator bearing against the flange of the sleeve, by mounting the central contact of the connector on the central conductor resting on the insulation, by soldering the central contact to the central conductor and then mounting the end of the cable fitted with such a connector end piece in the body of the connector, the assembly being immobilized by screwing a rear plug.
  • a very high frequency coaxial cable which comprises: a central conductor 1 of silver copper, multi-strand, for example with 7 or 19 strands; a dielectric 2 such as polytetrafluoroethylene (PTFE) with an aerated or solid structure, an aerated structure being preferred insofar as it makes it possible to reduce the high frequency losses compared to a solid structure; a first external conductor 3 in the form of a ribbon wound in silvery copper; a second external conductor in the form of a silver copper braid 4 and an external protective sheath, for example in extruded PTFE 5.
  • PTFE polytetrafluoroethylene
  • the turns of ribbon 3 overlap by almost 50%.
  • the winding of these turns is very tight and must be kept very tight to maintain the microwave characteristics of the cable.
  • a turn of the ribbon makes poor contact with the adjacent turn, this causes a discontinuity in the coaxial line which results in an increase in the losses and the reflection coefficient.
  • Such flexible very high frequency coaxial cables are currently produced by way of example by the company FILECA under the reference F 1703/53.
  • the end of the cable is punched in two or preferably four notches 15 through the external sheath 5 of the cable. This has the effect of permanently deforming the wound ribbon 3, subsequently preventing it from unwinding. This punching also causes a reduction in the outside diameter of the ribbon, which subsequently proves to be very useful for mounting the sleeve as will be explained below.
  • a metal sleeve 6 is then introduced, provided with an end flange 7 under the braid part 4 which has been stripped. Care should be taken to ensure that the clearance between the sleeve 6 and the tape 3 is as small as possible.
  • a crimp ferrule 8 is then introduced via the other end of the cable until it abuts against the flange 7 of the sleeve 6.
  • the ferrule 8 can be introduced on the cable by the same end before the introduction of the sleeve 6.
  • the ferrule 8 is crimped which on the one hand ensures the tightening of the braid 4 between the sleeve 6 and the ferrule, that is to say between two rigid parts, and on the other hand the tightening of the outer sheath 5.
  • Such an assembly provides effective mechanical immobilization of the sleeve 6 on the cable and keeps the ribbon 3 wound beyond the flange of the sleeve due to the guidance and tightening of the end of the sheath.
  • the end of the sleeve 6 comes almost to the right of the end of the sheath 5 so as not to leave a turn of the ribbon without external mechanical support.
  • the sleeve 6 is then welded to the tape 3. This welding has only an electrical role and does not mechanically immobilize the sleeve 6 on the tape 3.
  • the ribbon 3 is then unrolled and cut flush with the flange 7 of the sleeve. To do this, it is possible to carry out a breakthrough on the ribbon beforehand so that the latter can then be easily torn flush with the flange 7 of the sleeve. To complete the preparation of the end of the cable, it suffices to cut the dielectric 2 flush with the sleeve and the prepared end is obtained as shown in FIG. 7 where a section of inner conductor 1 extends over beyond the flange 7 of the sleeve.
  • FIG. 8 shows the mounting of a cable end thus prepared in a connector element.
  • this mounting there is an insulator 1Q on the central conductor 1 stripped from the end of the cable, bearing against the flange 7.
  • the central contact 11 is then mounted on the central conductor 1 bearing on the insulator 10 and solder the central contact 11 on the central conductor 1 as indicated in 12.
  • the coaxial cable welded by its central conductor to the central contact, is then put into place in a connector body 13 and the assembly is immobilized by screwing a rear plug 14.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
EP80400149A 1979-01-31 1980-01-30 Verfahren zur Vorbereitung des Endes eines biegsamen Koaxialkabels sehr hoher Frequenz für das Anbringen eines Verbindungselementes Expired EP0014639B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7902468 1979-01-31
FR7902468A FR2448238A1 (fr) 1979-01-31 1979-01-31 Procede pour preparer l'extremite d'un cable coaxial souple a tres haute frequence pour la mise en place d'un element de connecteur

Publications (2)

Publication Number Publication Date
EP0014639A1 true EP0014639A1 (de) 1980-08-20
EP0014639B1 EP0014639B1 (de) 1984-04-25

Family

ID=9221423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400149A Expired EP0014639B1 (de) 1979-01-31 1980-01-30 Verfahren zur Vorbereitung des Endes eines biegsamen Koaxialkabels sehr hoher Frequenz für das Anbringen eines Verbindungselementes

Country Status (4)

Country Link
US (1) US4345370A (de)
EP (1) EP0014639B1 (de)
DE (1) DE3067600D1 (de)
FR (1) FR2448238A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545289A1 (fr) * 1983-04-29 1984-11-02 Radiall Ind Procede pour preparer l'extremite d'un cable coaxial souple a tres haute frequence pour la mise en place d'un element de connecteur et manchon utilisable pour la mise en oeuvre du procede
US6579533B1 (en) 1999-11-30 2003-06-17 Bioasborbable Concepts, Ltd. Bioabsorbable drug delivery system for local treatment and prevention of infections

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517740A (en) * 1982-06-01 1985-05-21 Allied Corporation Method for grounding and terminating a cable
DE3377097D1 (en) * 1982-11-24 1988-07-21 Huber+Suhner Ag Pluggable connector and method of connecting it
US4700716A (en) * 1986-02-27 1987-10-20 Kasevich Associates, Inc. Collinear antenna array applicator
US4715251A (en) * 1986-08-04 1987-12-29 Amphenol Corporation Fiber optic cable preparation tool and method of preparing fiber optic cable for termination with a fiber optic connector
DE4116165A1 (de) * 1991-05-17 1992-11-19 Minnesota Mining & Mfg Verfahren zum aufbringen von lot auf die abschirmung eines kabels
US5414211A (en) * 1992-12-21 1995-05-09 E-Systems, Inc. Device and method for shielding an electrically conductive cable from electromagnetic interference
US5829519A (en) * 1997-03-10 1998-11-03 Enhanced Energy, Inc. Subterranean antenna cooling system
US6273736B1 (en) * 1997-07-22 2001-08-14 Applied Materials, Inc. Safety guard for an RF connector
US6605783B1 (en) * 1997-10-14 2003-08-12 Fitel Usa Corp. Non-metallic transmission cables and method for terminating the same
DE102005026068A1 (de) * 2005-06-07 2006-12-14 Robert Bosch Gmbh Sensoreinheit mit einem Anschlusskabel
TWM383805U (en) * 2010-02-10 2010-07-01 Li-Wen Liu Conductor with tip section and conduct-column, high conductivity and high energy saving cable, and high conductivity and high energy saving cable assembly
EP3242359B1 (de) * 2016-05-04 2019-07-17 MD Elektronik GmbH Kabel
JP6992978B2 (ja) * 2018-03-02 2022-01-13 日本圧着端子製造株式会社 同軸コネクタ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR939178A (fr) * 1944-01-15 1948-11-05 Int Standard Electric Corp Perfectionnements aux jonctions pour câbles électriques à conducteurs coaxiaux
GB942143A (en) * 1959-07-28 1963-11-20 Amphenol Borg Electronics Corp Coaxial connectors
FR2070564A5 (de) * 1967-05-15 1971-09-10 Amp Inc
US3697930A (en) * 1967-10-09 1972-10-10 James W Shirey Solderless coaxial connectors
US4070751A (en) * 1977-01-12 1978-01-31 Amp Incorporated Method of making a coaxial connector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785385A (en) * 1955-02-23 1957-03-12 Liquidometer Corp Moistureproof means for connecting a coaxial cable to a fitting
US3150231A (en) * 1961-10-10 1964-09-22 Bendix Corp End structure for plural cable connection
US3192308A (en) * 1963-05-22 1965-06-29 Nu Line Ind Inc Electrical connector for braided coaxial cable
NL137270C (de) * 1966-07-26
US3646502A (en) * 1970-08-24 1972-02-29 Bunker Ramo Connector element and method for element assembly
US4173385A (en) * 1978-04-20 1979-11-06 Bunker Ramo Corporation Watertight cable connector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR939178A (fr) * 1944-01-15 1948-11-05 Int Standard Electric Corp Perfectionnements aux jonctions pour câbles électriques à conducteurs coaxiaux
GB942143A (en) * 1959-07-28 1963-11-20 Amphenol Borg Electronics Corp Coaxial connectors
FR2070564A5 (de) * 1967-05-15 1971-09-10 Amp Inc
US3697930A (en) * 1967-10-09 1972-10-10 James W Shirey Solderless coaxial connectors
US4070751A (en) * 1977-01-12 1978-01-31 Amp Incorporated Method of making a coaxial connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545289A1 (fr) * 1983-04-29 1984-11-02 Radiall Ind Procede pour preparer l'extremite d'un cable coaxial souple a tres haute frequence pour la mise en place d'un element de connecteur et manchon utilisable pour la mise en oeuvre du procede
EP0125172A1 (de) * 1983-04-29 1984-11-14 RADIALL INDUSTRIE, Société Anonyme dite: Verfahren zum Bereiten des Endstückes eines biegsamen Koaxialkabels sehr hoher Frequenz für das Anbringen eines Verbinderelementes und zur Durchführung des Verfahrens verwendete Hülse
US6579533B1 (en) 1999-11-30 2003-06-17 Bioasborbable Concepts, Ltd. Bioabsorbable drug delivery system for local treatment and prevention of infections

Also Published As

Publication number Publication date
FR2448238B1 (de) 1981-03-06
EP0014639B1 (de) 1984-04-25
FR2448238A1 (fr) 1980-08-29
US4345370A (en) 1982-08-24
DE3067600D1 (en) 1984-05-30

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