EP0851437A1 - Einfach-anschliessbares abgeschirmtes Kabel - Google Patents

Einfach-anschliessbares abgeschirmtes Kabel Download PDF

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Publication number
EP0851437A1
EP0851437A1 EP97403130A EP97403130A EP0851437A1 EP 0851437 A1 EP0851437 A1 EP 0851437A1 EP 97403130 A EP97403130 A EP 97403130A EP 97403130 A EP97403130 A EP 97403130A EP 0851437 A1 EP0851437 A1 EP 0851437A1
Authority
EP
European Patent Office
Prior art keywords
cable
shielding
screen
incisions
along
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.)
Ceased
Application number
EP97403130A
Other languages
English (en)
French (fr)
Inventor
Serge Damilo
Daniel Prudhon
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.)
Nexans SA
Original Assignee
Alcatel SA
Alcatel Alsthom Compagnie Generale dElectricite
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 Alcatel SA, Alcatel Alsthom Compagnie Generale dElectricite filed Critical Alcatel SA
Publication of EP0851437A1 publication Critical patent/EP0851437A1/de
Ceased 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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation
    • 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

Definitions

  • the present invention relates to cables comprising at least one electrical conductor and a shielding screen formed of a ribbon. It applies in particular to cables with multiple conductors such as cables used in IT including four pairs of conductors formed by two quartes.
  • the invention aims to overcome the drawbacks of the state of the art.
  • a cable comprising at minus an electrical conductor, a ribbon laid over and forming shielding screen and tearing means of said screen is characterized in that said means of tearing is formed by incisions in the screen of shielding arranged along at least one line running on along the cable.
  • the invention makes it possible to get rid of the rope of tear used in the prior art which, on the one hand simplifies the manufacture of the cable and, on the other hand, especially in the case of small cables, avoids the excess thickness due to the tearing line.
  • the shielding according to the invention is also well better than that offered by a set of two ribbons each posed already.
  • the shielding tape can be laid lengthwise or helically.
  • FIG. 1 shows a shielded flat cable 1 comprising two quartes 2. This type of cable is used in the IT field for data transmission.
  • Each quarter 2 consists of a twist of four solid copper conductors 3, the conductors 3 being each insulated by a first insulating sheath 4 in one material with a low dielectric constant, such as polyethylene or expanded polypropylene for example.
  • the diameter of the solid conductors 3 is 0.6 mm and the diameter of the conductors insulated by means of the sheaths is 1.3 mm.
  • Quarters 2 arranged side by side, are surrounded a second insulating sheath 5.
  • This can be consisting of a thin shell 0.25 to 1 mm thick made of polyethylene, which allows rigid and reliable support of quads relative to each other while providing a sufficient elasticity to allow handling of the cable.
  • the shielding screen is an aluminum tape 50 ⁇ m thick and 5 mm wide.
  • an outer envelope for maintaining and protection 8 for example PVC, is extruded around all.
  • the second sheath 5 can be omitted if the shielding screen is able to ensure the function of keeping the four in place compared to each other.
  • the shielding tape 7 is laid, in a conventional manner, helical and overlapping. It could also be laid lengthwise and overlapping. Incisions 10 are obtained by perforation by means of a wheel comprising points in the shape of needles. This perforation can be performed on the ribbon before it is put in place (in the case where each line of incisions is parallel to the edge of the ribbon), or when manufacturing the cable after installation of the screen and before wrapping in the sheath 8.
  • needles 0.2 to 0.5 mm in diameter with a length of 5/100 to 1/10 mm allow to create the desired incisions without hurting insulated conductors.
  • the incisions 10 are formed according to one or more lines running along the cable. These lines can be straight, helical, sinusoidal, zig-zag, etc ...
  • the incisions 9A and 9B of each of the screens of shielding 6A and 6B are not necessarily identical, nor in their size and in their shape.
  • the invention is not limited to the embodiments represented. On the contrary, it applies to any cable comprising at least one electrical conductor and at least one shielding tape, regardless of the number of conductors and the number of sub-assemblies of conductors screened separately.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
EP97403130A 1996-12-23 1997-12-23 Einfach-anschliessbares abgeschirmtes Kabel Ceased EP0851437A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9615844A FR2757672B1 (fr) 1996-12-23 1996-12-23 Cable blinde facile a raccorder
FR9615844 1996-12-23

Publications (1)

Publication Number Publication Date
EP0851437A1 true EP0851437A1 (de) 1998-07-01

Family

ID=9498993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97403130A Ceased EP0851437A1 (de) 1996-12-23 1997-12-23 Einfach-anschliessbares abgeschirmtes Kabel

Country Status (2)

Country Link
EP (1) EP0851437A1 (de)
FR (1) FR2757672B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2013123A1 (en) * 1970-03-19 1971-09-30 Kabel- u. Metallwerke Gutehoffnungshütte AG, 3000 Hannover Metal-sheathed electric cable
DE3123040A1 (de) * 1981-06-11 1983-01-05 Vacuumschmelze Gmbh, 6450 Hanau Magnetisch abgeschirmtes kabel mit einer abschirmungaus weichmagnetischem material
US5107076A (en) * 1991-01-08 1992-04-21 W. L. Gore & Associates, Inc. Easy strip composite dielectric coaxial signal cable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2013123A1 (en) * 1970-03-19 1971-09-30 Kabel- u. Metallwerke Gutehoffnungshütte AG, 3000 Hannover Metal-sheathed electric cable
DE3123040A1 (de) * 1981-06-11 1983-01-05 Vacuumschmelze Gmbh, 6450 Hanau Magnetisch abgeschirmtes kabel mit einer abschirmungaus weichmagnetischem material
US5107076A (en) * 1991-01-08 1992-04-21 W. L. Gore & Associates, Inc. Easy strip composite dielectric coaxial signal cable

Also Published As

Publication number Publication date
FR2757672B1 (fr) 1999-01-22
FR2757672A1 (fr) 1998-06-26

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