EP0802543A1 - Vierer mit ein Metallband zum Festhalten - Google Patents

Vierer mit ein Metallband zum Festhalten Download PDF

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Publication number
EP0802543A1
EP0802543A1 EP97400849A EP97400849A EP0802543A1 EP 0802543 A1 EP0802543 A1 EP 0802543A1 EP 97400849 A EP97400849 A EP 97400849A EP 97400849 A EP97400849 A EP 97400849A EP 0802543 A1 EP0802543 A1 EP 0802543A1
Authority
EP
European Patent Office
Prior art keywords
strip
quarter
tape
conductors
edges
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Withdrawn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
EP97400849A
Other languages
English (en)
French (fr)
Inventor
Jean Gombert
Gilles Labbay
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.)
Sagem SA
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Publication of EP0802543A1 publication Critical patent/EP0802543A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1016—Screens specially adapted for reducing interference from external sources composed of a longitudinal lapped tape-conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/005—Quad constructions

Definitions

  • the present invention relates to a fourth.
  • Quarters are known, in particular star quads used in telecommunications electrical lines.
  • the star quads consist of two pairs of insulated conductors arranged at the top of a square, the two conductors of the same pair being arranged along a diagonal of the square.
  • the conductors must be twisted and the pitch must be all the shorter as the requested speed is high.
  • local networks are asked to transmit rates of 150 Mbits / s or even more by signals at frequencies of 100 MHz or more.
  • star quads comprising insulated conductors arranged in a cylindrical tube of extruded synthetic material.
  • the conductors In order for the conductors to be properly held, in particular during the handling of wiring during which several fourths are brought together to form a cable, it is necessary that the tube is fairly rigid and thick enough. Quarters of known structure are therefore difficult to handle.
  • Document GB-A-1,413,924 also discloses a fourth star comprising insulated conductors surrounded by a strip screen spaced from the conductors and whose longitudinal edges overlap. Maintaining the insulated conductors in position is ensured in this type of quarter by a filling material placed around the insulated conductors. As a result, such a quarter is rigid and therefore difficult to handle.
  • a quarter comprising four insulated conductors, surrounded by a ribbon having overlapping edges, characterized in that the ribbon is in contact with the insulated conductors to hold them, and is fixed on itself along at least one of its edges.
  • the insulated conductors are kept in a precise position while retaining great flexibility of the quarter obtained so that the operations subsequent wiring are greatly simplified.
  • the retaining tape comprises an internal layer of synthetic material
  • the retaining tape is fixed on itself by glue.
  • the retaining tape is metallic, the latter is fixed on itself by a weld.
  • the retaining tape has a circular external contour.
  • the retaining tape ensures centering of the quarter in a connection device and therefore facilitates the positioning of the end of the quarter in the connection device.
  • the fourth star comprises, in a manner known per se, four conductors 1 isolated by a solid or cellular dielectric material 2 such as polyethylene, polypropylene, polyvinyl chloride or a fluorinated polymer .
  • a solid or cellular dielectric material 2 such as polyethylene, polypropylene, polyvinyl chloride or a fluorinated polymer .
  • the insulated conductors are surrounded by a metal strip 3, for example an aluminum strip with a thickness of 125 ⁇ m which is shaped during installation according to a cylinder whose edges are overlap and which has a circular external contour 4.
  • the metal strip 3 is welded to itself along its external edge 5, for example by laser welding forming a weld bead 6 inscribed in the circular outer contour 4 of the metallic strip.
  • the quarter further comprises a tearing cord 8 made of synthetic material disposed between the insulated conductors and the retaining tape in order to allow easy tearing of the retaining tape by pulling the tearing rope laterally.
  • a tearing cord 8 made of synthetic material disposed between the insulated conductors and the retaining tape in order to allow easy tearing of the retaining tape by pulling the tearing rope laterally.
  • the metal strip ensures excellent crosstalk between the quarters and protection against the radiation of the cable or against external disturbances.
  • the use of a metallic tape makes it possible to obtain a holding the quarter with a very thin ribbon so that a transmission cable produced with the quarter according to the invention may comprise a large number of quads while having a small footprint.
  • the second embodiment of a quarter star comprises, as previously, four conductors 1 insulated by a dielectric material 2 and arranged at the top of a square.
  • the retaining tape 3 this time comprises an external metallic layer 3.1 and an internal layer of synthetic material, for example polyester.
  • the composite tape has a total thickness of 50 ⁇ m and is wound in a helix, the edges 5 of the retaining tape 3 being arranged to overlap.
  • the retaining tape is fixed on itself along its edges by a bead of glue 7.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
EP97400849A 1996-04-19 1997-04-15 Vierer mit ein Metallband zum Festhalten Withdrawn EP0802543A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604923 1996-04-19
FR9604923A FR2747828B1 (fr) 1996-04-19 1996-04-19 Quarte comportant un ruban de maintien metallique

Publications (1)

Publication Number Publication Date
EP0802543A1 true EP0802543A1 (de) 1997-10-22

Family

ID=9491372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400849A Withdrawn EP0802543A1 (de) 1996-04-19 1997-04-15 Vierer mit ein Metallband zum Festhalten

Country Status (2)

Country Link
EP (1) EP0802543A1 (de)
FR (1) FR2747828B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10036805A1 (de) * 2000-07-28 2002-02-07 Tesa Ag Verfahren zur Ummantelung von langgestrecktem Gut, wie insbesondere Kabelsätzen
EP2790189A1 (de) * 2013-04-08 2014-10-15 Nexans Datenübertragungskabel für die Luftfahrtindustrie

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1413924A (en) * 1973-04-19 1975-11-12 Pirelli Telecommunications cables
US4151365A (en) * 1977-08-22 1979-04-24 Western Electric Company, Inc. Filled service cable having corrugated shield and methods of making

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1413924A (en) * 1973-04-19 1975-11-12 Pirelli Telecommunications cables
US4151365A (en) * 1977-08-22 1979-04-24 Western Electric Company, Inc. Filled service cable having corrugated shield and methods of making

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10036805A1 (de) * 2000-07-28 2002-02-07 Tesa Ag Verfahren zur Ummantelung von langgestrecktem Gut, wie insbesondere Kabelsätzen
US7282250B2 (en) 2000-07-28 2007-10-16 Tesa Ag Method for providing longitudinally extended articles, such as cable assemblies, with a sheathing
EP2790189A1 (de) * 2013-04-08 2014-10-15 Nexans Datenübertragungskabel für die Luftfahrtindustrie

Also Published As

Publication number Publication date
FR2747828A1 (fr) 1997-10-24
FR2747828B1 (fr) 1998-05-22

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