EP0802545A1 - Star-quad with supporting core - Google Patents

Star-quad with supporting core Download PDF

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Publication number
EP0802545A1
EP0802545A1 EP97400851A EP97400851A EP0802545A1 EP 0802545 A1 EP0802545 A1 EP 0802545A1 EP 97400851 A EP97400851 A EP 97400851A EP 97400851 A EP97400851 A EP 97400851A EP 0802545 A1 EP0802545 A1 EP 0802545A1
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EP
European Patent Office
Prior art keywords
conductors
star
support member
central support
adhesive
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Withdrawn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
EP97400851A
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German (de)
French (fr)
Inventor
Martine Decorps
Jean Gombert
José Marchand
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 EP0802545A1 publication Critical patent/EP0802545A1/en
Withdrawn legal-status Critical Current

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    • 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 star.
  • 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 DE-A-25 16 830 also discloses a quarter star in which non-insulated conductors are arranged in cells of a central rod and held in place in these cells by extruding around the conductors a dielectric material in which the conductors are embedded.
  • a quarter star in which non-insulated conductors are arranged in cells of a central rod and held in place in these cells by extruding around the conductors a dielectric material in which the conductors are embedded.
  • Document GB-A-389 118 also discloses a fourth star comprising insulated conductors fixed to a cylindrical-shaped carrier member with adhesive so as to maintain their respective positions.
  • the flexibility of such a quarter is good.
  • the precise positioning of the conductors when they are fixed to the carrier member is difficult because of the cylindrical shape of the latter.
  • a fourth star comprising four insulated conductors arranged at the top of a square, and fixed to a central support member by an adhesive, characterized in that the central support member comprises positioning cells.
  • the insulated conductors are not embedded in a mass of material and the resulting quarter retains flexibility allowing easy wiring with other quartes .
  • the positioning cells facilitate the precise placement of the conductors on the central support member.
  • the adhesive is a contact adhesive.
  • the insulated conductors are easily installed by simple passage in a die simultaneously ensuring their positioning and their pressurization against the adhesive previously disposed on the central support member.
  • 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 fixed in the bottom of the cells 3 of a central support member 4 by an adhesive 5.
  • the adhesive 5 is a contact adhesive which is placed in the cells 4 of the central support member 3 prior to the installation of the insulated conductors.
  • the conductors are fixed to the central support member 3 over approximately a quarter of their circumference so that while being firmly fixed to the support member 3 in a precise position, the insulated conductors are not embedded in a mass of material. While having a precise structure, the quarter according to the invention thus retains flexibility allowing easy handling when wiring several quarters to make a transmission cable.
  • the pitch of the twist of the insulated conductors could easily be adapted to a particular application by producing a central support member comprising cells extending along a helix having a pitch corresponding to the pitch of twist desired for the insulated conductors.

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  • Communication Cables (AREA)

Abstract

The wiring arrangement includes four conductors (1) which are insulated (2) e.g. with cellular polyethylene, polypropylene, polyvinyl chloride or a fluorinated polymer, and fitted into the shallow recesses (4) in the four sides of the former (3) which constitutes the core of the cable. Each conductor is secured in position by contact adhesive (5). The recesses may follow a helical path around the former with a pitch corresponding to that required of the twisted conductors for a particular application. The conductors are not encapsulated and retain sufficient flexibility for ease of cabling together with other quads.

Description

La présente invention concerne une quarte étoile.The present invention relates to a fourth star.

On connaît des quartes étoile utilisées dans les lignes électriques de télécommunication. Ces quartes sont constituées de deux paires de conducteurs isolés disposés au sommet d'un carré, les deux conducteurs d'une même paire étant disposés selon une diagonale du carré.There are known star quads used in telecommunication power lines. These 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.

On sait que le positionnement relatif des conducteurs formant une quarte étoile est essentiel pour obtenir des couplages capacitifs et inductifs déterminés dont dépend la qualité de la transmission des informations. Ces couplages doivent être réalisés de façon d'autant plus précise que l'on souhaite faire passer un grand débit d'informations. Tout défaut de symétrie de la quarte se traduit par des couplages parasites entraînant des erreurs de transmission qui ne peuvent être corrigées qu'au dépend du débit des informations transmises.It is known that the relative positioning of the conductors forming a fourth star is essential for obtaining determined capacitive and inductive couplings on which the quality of the information transmission depends. These couplings must be carried out all the more precisely if it is desired to pass a large flow of information. Any lack of symmetry in the fourth results in parasitic couplings causing transmission errors which can only be corrected depending on the speed of the information transmitted.

Par ailleurs pour assurer une transmission satisfaisante les conducteurs doivent être torsadés et le pas doit être d'autant plus court que le débit demandé est élevé.Furthermore, to ensure satisfactory transmission, the conductors must be twisted and the pitch must be all the shorter as the requested speed is high.

A titre d'exemple on demande dans les réseaux locaux de transmettre des débits de 150 Mbits/s ou même plus par des signaux à des fréquences de 100 MHz ou plus.For example, local networks are asked to transmit rates of 150 Mbits / s or even more by signals at frequencies of 100 MHz or more.

On connaît, notamment du document FR-A-2.144.573 des quartes étoile comportant des conducteurs isolés disposés dans un tube cylindrique en matière synthétique extrudée. Afin que les conducteurs soient convenablement maintenus, en particulier lors des manipulations de câblage au cours desquelles plusieurs quartes sont réunies pour former un câble, il est nécessaire que le tube soit assez rigide et assez épais. Les quartes de structure connue sont donc d'une manipulation mal aisée.Are known, in particular from document FR-A-2,144,573, star quads comprising insulated conductors arranged in a cylindrical tube of extruded synthetic material. 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.

On connaît également du document DE-A-25 16 830 une quarte étoile dans laquelle des conducteurs non isolés sont disposés dans des alvéoles d'un jonc central et maintenues en place dans ces alvéoles en extrudant autour des conducteurs un matériau diélectrique dans lequel les conducteur sont noyés. De même que dans le cas précédent, il est nécessaire pour maintenir les conducteurs selon une disposition précise, de prévoir une couche importante de matière diélectrique de sorte que la quarte obtenue est d'une manipulation malaisée lors d'une opération de câblage associant plusieurs quartes. En outre, il est difficile de maintenir les conducteurs dans une position précise dans le fond des alvéoles pendant l'opération d'extrusion de la matière diélectrique.Document DE-A-25 16 830 also discloses a quarter star in which non-insulated conductors are arranged in cells of a central rod and held in place in these cells by extruding around the conductors a dielectric material in which the conductors are embedded. As in the previous case, it is necessary to maintain the conductors according to a precise arrangement, to provide a large layer of dielectric material so that the quarter obtained is difficult to handle during a wiring operation associating several quarters . In addition, it is difficult to maintain the conductors in a precise position in the bottom of the cells during the operation of extruding the dielectric material.

On connaît aussi du document GB-A-389 118 une quarte étoile comportant des conducteurs isolés et fixés à un organe porteur de forme cylindrique par de la colle de façon à maintenir leurs positions respectives. La flexibilité d'une telle quarte est bonne. Toutefois, le positionnement précis des conducteurs lors de leur fixation sur l'organe porteur est délicat du fait de la forme cylindrique de celui-ci.Document GB-A-389 118 also discloses a fourth star comprising insulated conductors fixed to a cylindrical-shaped carrier member with adhesive so as to maintain their respective positions. The flexibility of such a quarter is good. However, the precise positioning of the conductors when they are fixed to the carrier member is difficult because of the cylindrical shape of the latter.

Selon l'invention on propose une quarte étoile comportant quatre conducteurs isolés disposés au sommet d'un carré, et fixés à un organe porteur central par une colle, caractérisée en ce que l'organe porteur central comporte des alvéoles de positionnement.According to the invention there is provided a fourth star comprising four insulated conductors arranged at the top of a square, and fixed to a central support member by an adhesive, characterized in that the central support member comprises positioning cells.

Ainsi tout en étant maintenus dans une position précise par le collage dans les alvéoles de l'organe porteur central, les conducteurs isolés ne sont pas noyés dans une masse de matière et la quarte obtenue garde une souplesse permettant un câblage aisé avec d'autres quartes. En outre, les alvéoles de positionnement facilitent la mise en place précise des conducteurs sur l'organe porteur central.Thus while being kept in a precise position by bonding in the cells of the central support member, the insulated conductors are not embedded in a mass of material and the resulting quarter retains flexibility allowing easy wiring with other quartes . In addition, the positioning cells facilitate the precise placement of the conductors on the central support member.

Selon une version avantageuse de l'invention la colle est une colle par contact. Ainsi, les conducteurs isolés sont aisément mis en place par simple passage dans une filière assurant simultanément leur positionnement et leur mise en pression contre la colle préalablement disposée sur l'organe porteur central.According to an advantageous version of the invention, the adhesive is a contact adhesive. Thus, the insulated conductors are easily installed by simple passage in a die simultaneously ensuring their positioning and their pressurization against the adhesive previously disposed on the central support member.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui va suivre d'un mode de réalisation particulier non limitatif de l'invention, en référence à la figure unique ci-jointe qui est une vue en coupe très agrandie d'une quarte étoile selon l'invention.Other characteristics and advantages of the invention will appear on reading the following description of a particular, non-limiting embodiment of the invention, with reference to the attached single figure which is a very sectional view. enlarged by a fourth star according to the invention.

En référence à la figure, la quarte étoile selon l'invention comporte d'une façon connue en soi quatre conducteurs 1 isolés par un matériau diélectrique 2 plein ou cellulaire tel que du polyéthylène, du polypropylène, du polychlorure de vinyle ou un polymère fluoré. Lors de la réalisation de la quarte étoile, les quatre conducteurs isolés sont torsadés tout en étant guidés pour les maintenir de façon précise au sommet d'un carré.Referring to the figure, the fourth star according to the invention 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. When making the fourth star, the four insulated conductors are twisted while being guided to hold them precisely at the top of a square.

Selon le mode de réalisation illustré de l'invention les conducteurs isolés sont fixés dans le fond des alvéoles 3 d'un organe porteur central 4 par une colle 5.According to the illustrated embodiment of the invention, the insulated conductors are fixed in the bottom of the cells 3 of a central support member 4 by an adhesive 5.

Selon un mode de réalisation préféré de l'invention la colle 5 est une colle par contact qui est disposée dans les alvéoles 4 de l'organe porteur central 3 préalablement à la mise en place des conducteurs isolés.According to a preferred embodiment of the invention, the adhesive 5 is a contact adhesive which is placed in the cells 4 of the central support member 3 prior to the installation of the insulated conductors.

Dans le cas d'un organe porteur central en forme de croix comme illustré, on remarquera que les conducteurs sont fixés à l'organe porteur central 3 sur environ un quart de leur circonférence de sorte que tout en étant fermement fixés à l'organe porteur 3 dans une position précise, les conducteurs isolés ne sont pas enchâssés dans une masse de matière. Tout en ayant une structure précise, la quarte selon l'invention garde ainsi une flexibilité permettant une manipulation aisée lors du câblage de plusieurs quartes pour réaliser un câble de transmission.In the case of a central support member in the shape of a cross as illustrated, it will be noted that the conductors are fixed to the central support member 3 over approximately a quarter of their circumference so that while being firmly fixed to the support member 3 in a precise position, the insulated conductors are not embedded in a mass of material. While having a precise structure, the quarter according to the invention thus retains flexibility allowing easy handling when wiring several quarters to make a transmission cable.

On remarquera également que dans la quarte étoile selon l'invention le pas de la torsade des conducteurs isolés pourra aisément être adapté à une application particulière en réalisant un organe porteur central comportant des alvéoles s'étendant selon une hélice ayant un pas correspondant au pas de torsade souhaité pour les conducteurs isolés.Note also that in the fourth star according to the invention the pitch of the twist of the insulated conductors could easily be adapted to a particular application by producing a central support member comprising cells extending along a helix having a pitch corresponding to the pitch of twist desired for the insulated conductors.

Bien entendu l'invention n'est pas limitée au mode de réalisation décrit et on peut y apporter des variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications.Of course, the invention is not limited to the embodiment described and it is possible to make variant embodiments without departing from the scope of the invention as defined by the claims.

En particulier, sans sortir du cadre de l'invention on pourra prévoir un ruban métallique posé en long ou en hélice autour de la quarte pour améliorer la diaphonie avec des quartes adjacentes et assurer une protection contre le rayonnement du câble ou contre les perturbations extérieures.In particular, without departing from the scope of the invention, it is possible to provide a metal strip laid lengthwise or helically around the quarter to improve the crosstalk with adjacent quads and provide protection against radiation from the cable or against external disturbances.

Claims (2)

Quarte étoile comportant quatre conducteurs isolés disposés au sommet d'un carré et fixés à un organe porteur central (3) par une colle (5), caractérisée en ce que l'organe porteur central comporte des alvéoles de positionnement (4).Star quarter comprising four insulated conductors arranged at the top of a square and fixed to a central support member (3) by an adhesive (5), characterized in that the central support member comprises positioning cells (4). Quarte étoile selon la revendication 1, caractérisée en ce que la colle (5) est une colle par contact.Four-star according to claim 1, characterized in that the adhesive (5) is a contact adhesive.
EP97400851A 1996-04-19 1997-04-15 Star-quad with supporting core Withdrawn EP0802545A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9604925A FR2747830B1 (en) 1996-04-19 1996-04-19 QUARTE STAR WITH CENTRAL CARRIER
FR9604925 1996-04-19

Publications (1)

Publication Number Publication Date
EP0802545A1 true EP0802545A1 (en) 1997-10-22

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EP97400851A Withdrawn EP0802545A1 (en) 1996-04-19 1997-04-15 Star-quad with supporting core

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EP (1) EP0802545A1 (en)
FR (1) FR2747830B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1122569A1 (en) * 2000-02-02 2001-08-08 W.L. GORE & ASSOCIATES GmbH Quad cable
WO2003094178A1 (en) * 2002-05-02 2003-11-13 Belden Technologies, Inc. Surfaced cable filler
WO2004021367A2 (en) * 2002-08-30 2004-03-11 Belden Technologies, Inc. Separable multi-member composite cable
US8198536B2 (en) 2005-12-09 2012-06-12 Belden Inc. Twisted pair cable having improved crosstalk isolation
US8455762B2 (en) 2004-11-17 2013-06-04 Belden Cdt (Canada) Inc. High performance telecommunications cable
US8497428B2 (en) 1996-04-09 2013-07-30 Belden Inc. High performance data cable
CN106920585A (en) * 2017-04-07 2017-07-04 江苏帝诚线缆有限公司 A kind of anti-rolling Comprehensive Control cable with anti-rolling skeleton

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB389118A (en) * 1931-09-10 1933-03-10 John Richard Pheazey Improvements in or relating to electric signalling cables
GB1037855A (en) * 1963-04-10 1966-08-03 Standard Telephones Cables Ltd Quad construction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB389118A (en) * 1931-09-10 1933-03-10 John Richard Pheazey Improvements in or relating to electric signalling cables
GB1037855A (en) * 1963-04-10 1966-08-03 Standard Telephones Cables Ltd Quad construction

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8536455B2 (en) 1996-04-09 2013-09-17 Belden Inc. High performance data cable
US8497428B2 (en) 1996-04-09 2013-07-30 Belden Inc. High performance data cable
EP1122569A1 (en) * 2000-02-02 2001-08-08 W.L. GORE & ASSOCIATES GmbH Quad cable
WO2001057573A2 (en) * 2000-02-02 2001-08-09 W.L. Gore & Associates Gmbh Quad cable
WO2001057573A3 (en) * 2000-02-02 2001-12-13 Gore W L & Ass Gmbh Quad cable
GB2373626A (en) * 2000-02-02 2002-09-25 Gore W L & Ass Gmbh Quad cable
GB2373626B (en) * 2000-02-02 2004-07-21 Gore W L & Ass Gmbh Quad cable
WO2003094178A1 (en) * 2002-05-02 2003-11-13 Belden Technologies, Inc. Surfaced cable filler
US7259332B2 (en) 2002-08-30 2007-08-21 Belden Technologies, Inc. Separable multi-member composite cable
AU2003269974B2 (en) * 2002-08-30 2009-01-08 Belden Technologies, Inc. Separable multi-member composite cable
AU2003269974C1 (en) * 2002-08-30 2009-06-25 Belden Technologies, Inc. Separable multi-member composite cable
WO2004021367A3 (en) * 2002-08-30 2004-07-29 Belden Technologies Inc Separable multi-member composite cable
WO2004021367A2 (en) * 2002-08-30 2004-03-11 Belden Technologies, Inc. Separable multi-member composite cable
US8455762B2 (en) 2004-11-17 2013-06-04 Belden Cdt (Canada) Inc. High performance telecommunications cable
US8198536B2 (en) 2005-12-09 2012-06-12 Belden Inc. Twisted pair cable having improved crosstalk isolation
CN106920585A (en) * 2017-04-07 2017-07-04 江苏帝诚线缆有限公司 A kind of anti-rolling Comprehensive Control cable with anti-rolling skeleton

Also Published As

Publication number Publication date
FR2747830A1 (en) 1997-10-24
FR2747830B1 (en) 1998-05-22

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