EP1177561A1 - Telecommunication cable, and in particular self-supported subscriber connection cable - Google Patents

Telecommunication cable, and in particular self-supported subscriber connection cable

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Publication number
EP1177561A1
EP1177561A1 EP01907752A EP01907752A EP1177561A1 EP 1177561 A1 EP1177561 A1 EP 1177561A1 EP 01907752 A EP01907752 A EP 01907752A EP 01907752 A EP01907752 A EP 01907752A EP 1177561 A1 EP1177561 A1 EP 1177561A1
Authority
EP
European Patent Office
Prior art keywords
cable
sheath
tube
pair
cable according
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
EP01907752A
Other languages
German (de)
French (fr)
Other versions
EP1177561B1 (en
Inventor
Jean-Yves Goblot
Alain Tranchant
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.)
Acome SCOP
Original Assignee
Acome SCOP
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Filing date
Publication date
Application filed by Acome SCOP filed Critical Acome SCOP
Publication of EP1177561A1 publication Critical patent/EP1177561A1/en
Application granted granted Critical
Publication of EP1177561B1 publication Critical patent/EP1177561B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0869—Flat or ribbon cables comprising one or more armouring, tensile- or compression-resistant elements
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath

Definitions

  • the present invention relates to a new telecommunications cable structure.
  • a first type of cable is a cable which has an 8-shaped sheath, a first part of which is overmolded on a metal carrier and a second part of which defines a tube which receives a pair or a quarter of twisted copper wires.
  • Such a structure has the drawback of being of considerable bulk and weight, as well as of a high cost.
  • a second type of cable also known is a cable having a sheath of substantially flat shape inside which extend on the one hand a central metallic carrier and on the other hand, on each side of this carrier, pairs of copper wires.
  • these cables like the cables at 8, have the drawback of requiring the metal carriers to be brought to earth at the level of the dwellings, in order to evacuate any lightning currents therein.
  • Cables are also known of a structure similar to that proposed in US Pat. No. 4,467,138, but which comprise only a single pair of wires, the wires which constitute said pair being arranged on either side of the metal carrier. . Cables of this type are currently used as subscriber connection cable in France.
  • cables have, in particular as regards their weight and cost, substantially the same drawbacks as cables with an 8 sheath or as cables of the type of those described in US 4,467,138.
  • cables of the type as those described are also known. in US patents 4,761,053 and EP 0 468 689. These cables comprise carriers of dielectric material placed on either side of metallic conductors individually insulated by envelopes. These dielectric carriers and the insulated conductors are embedded in a plastic sheath which does not allow easy access to the conductors.
  • the invention aims to overcome the problems posed by the various structures presented above by providing a cable capable of transmitting high frequency signals, which also allows to easily disassemble the conductors, while allowing good mechanical protection of those -this.
  • a telecommunication cable and in particular a subscriber connection cable comprising a sheath, as well as two carriers made of a dielectric material and at least one pair of metallic wires which extend in said sheath, characterized in that said sheath has a central tube on either side of which the two carriers are arranged and inside which extends said pair of metal wires, the metal wires of said pair being twisted wires.
  • the metal conductors - arranged in the tube - are not embedded in the sheath, which facilitates their disassembly relative to the rest of the sheath.
  • the structure of the sheath allows the use of twisted conductor wires.
  • this configuration advantageously makes it possible to limit the tensile stresses on the conductors - which is particularly important in the case of twisted conductors when it is desired to be able to reach high flow rates - and to transfer the stresses to the carriers in distributing them symmetrically with respect to the tube.
  • the outside diameter of the central tube - that is to say its height - is less than the height of the sheath at the level of the carriers. This characteristic makes it possible to protect the conductors contained in the tube in the event of compression.
  • FIG. 1 is a schematic representation in sectional view of a cable according to a first possible embodiment for the invention
  • - Figure 2 is a schematic representation in sectional view of a cable according to a second possible embodiment for the invention
  • FIGS. 3a and 3b are schematic representations in top view illustrating a type of fixing commonly used with subscriber cables. ;
  • FIG. 4 is a representation similar to that of Figure 1 illustrating another possible embodiment of the invention.
  • the cable of FIG. 1 comprises a sheath 1, which defines on the one hand a central tube 2 in which extends a pair of twisted metallic wires 6 or a quarter (that is to say a set made up of four twisted metallic wires ), and on the other hand two sub-sheaths 3 and 4 which are on either side of this central tube 2 and in which extend the carriers 5.
  • the carriers 5 have the characteristic of being not of metallic materials but of dielectric materials.
  • these carriers 5 are made of aramid wicks, or glass wicks.
  • a carrier 5 made of glass wicks is for example a carrier 2 mm wide and 0.19 mm thick, capable of supporting 55 daN in traction.
  • a carrier 5 made of aramid wicks would be of similar dimensions and mechanical characteristics.
  • the twisted metal wires 6 are - in a manner known per se - insulated copper wires.
  • these wires are for example of an external diameter between 0.4 and 0.8mm, an external diameter of 0.6mm being preferred.
  • the insulation used for these copper wires is advantageously low density, medium density or high density polyethylene.
  • the external diameter of the copper wires 6 with their insulator is between 0.65 mm and 1.30 mm, an external diameter of 0.96 mm being preferred (this preferred external diameter corresponding to the stripped external diameter of 0.6 mm indicated above).
  • the twisted wires have an assembly pitch which can be constructed or which can be alternated (technique sZ).
  • the pair of copper wires can be surrounded by an intermediate envelope (not shown) which provides thermal and / or mechanical protection.
  • This envelope is for example constituted by a polyester ribbon with which the pair of wires 6 is surrounded.
  • the sheath 1 is advantageously made of polyolefin.
  • it is preferably made of PVC or polyethylene and more particularly preferably of high density polyethylene (density greater than 0.94), to satisfy the compatibility constraints with the insulation of the copper wires 6, as well as to satisfy the aging requirements.
  • the central tube 2 has an internal diameter which corresponds substantially to the diameter of the twisted assembly formed by the metal wires 6.
  • the central tube 2 is filled with a product 9, such as petroleum jelly, in which the wires 6 are embedded and which ensures or contributes to the sealing of the cable.
  • a product 9 such as petroleum jelly
  • petroleum jelly constitutes a non-frozen gel and therefore in no way imposes on the wires 6 constraints similar to those which would be imposed on said wires if they were embedded in a rigid material.
  • This petroleum jelly does not prevent the easy stripping of the conductors for the preparation of the ends.
  • the width of a cable conforming to such a structure (that is to say the distance between the most distant points of the sheath 3 and of the sheath 4) is 7.4 mm + 0.4 mm, while its height (i.e. its dimension perpendicular to the plane passing through the axes of the carriers 5 and the tube
  • the sheath 1 has an elongation at break greater than 300%, the breaking force being greater than 18 MPa.
  • the central tube 2 of the sheath 1 has a hexagonal external shape, while the sub-sheaths 3 and
  • the central tube 2 and / or the sub-sheaths 3 and 4 can (be) be of round shape.
  • the cable which has just been described is produced with the techniques conventionally known to those skilled in the art and in particular by extruding the sheath 1 on the carriers 5 and the metal wires 6.
  • the sheath 1 may have another external shape than that shown in Figure 1 and in particular a shape of substantially rectangular section.
  • the sectional shape shown in Figure 1 has the advantage of protecting the tube 2 and the pair of copper wires 6 therein against compression forces.
  • the height of the sub-sheaths 3 and 4 is greater than that of the tube 2.
  • the tube 2 is located between the two planes which are tangent to the two sub-sheaths 3 and 4 and is therefore protected against compression forces. acting on the cable perpendicular to the plane passing through the axes of the carriers 5 and the central tube 2.
  • They comprise a sheath 8 in which the cable C is engaged in a loop and a part 7 forming a corner which is then pressed into the sheath and which comes to bear on the edges of the cable.
  • the zones by which the tube 2 is connected to the sheaths 3 and 4 are preferably of a height I less than the minimum thickness e of the tube 2.
  • Such zones thus define the tear-off tabs which make it possible to simply tear the two sheathed carriers of the central part so as to access, without special tools, the pair of metal wires.
  • these tear tabs are less than 0.4 mm high.
  • non-metallic carriers allows greater lightness of structure, as well as an optimized cost.
  • the proposed cable can be drawn inside the dwellings, unlike the connection cables known to date.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

The invention concerns a telecommunication cable comprising a sheath (1) and two carriers (5) made of dielectric material and at least a pair of metal wires (6) extending in said sheath. The invention is characterised in that said sheath has a central tube (2) on either side of which are arranged the two carriers and inside which extends said pair of metal wires (6), the metal wires (6) of said pair being stranded wires.

Description

CÂBLE DE TELECOMMUNICATION, ET NOTAMMENT CABLE DE RACCORDEMENT D'ABONNE, DE TYPE AUTOPORTE, TELECOMMUNICATION CABLE, AND IN PARTICULAR SELF-SUPPORTING SUBSCRIBER CONNECTION CABLE,
La présente invention est relative à une nouvelle structure de câble de télécommunication.The present invention relates to a new telecommunications cable structure.
Elle trouve avantageusement - mais non limitativement - application dans le cas de câbles aériens pour le raccordement d'abonnés à un réseau de télécommunication (câble appelé câble de raccordement d'abonné par opposition aux câbles de distribution de réseaux téléphoniques). Classiquement, on utilise pour raccorder des habitations d'abonnés à un réseau de télécommunication deux types de câbles aériens auto- portés. Un premier type de câble est un câble qui présente une gaine de forme en 8 dont une première partie est surmoulée sur un porteur métallique et dont une deuxième partie définit un tube qui reçoit une paire ou une quarte de fils de cuivre torsadés.It is advantageously - but not limited to - application in the case of overhead cables for the connection of subscribers to a telecommunications network (cable called subscriber connection cable as opposed to distribution cables of telephone networks). Conventionally, two types of overhead aerial cables are used to connect subscriber homes to a telecommunications network. A first type of cable is a cable which has an 8-shaped sheath, a first part of which is overmolded on a metal carrier and a second part of which defines a tube which receives a pair or a quarter of twisted copper wires.
Une telle structure présente l'inconvénient d'être d'un encombrement et d'un poids importants, en même temps que d'un coût élevé.Such a structure has the drawback of being of considerable bulk and weight, as well as of a high cost.
Un deuxième type de câble également connu est un câble présentant une gaine de forme sensiblement plate à l'intérieur de laquelle s'étendent d'une part un porteur métallique central et d'autre part, de chaque côté de ce porteur, des paires de fils de cuivre.A second type of cable also known is a cable having a sheath of substantially flat shape inside which extend on the one hand a central metallic carrier and on the other hand, on each side of this carrier, pairs of copper wires.
Un exemple de structure en ce sens est notamment décrit dans le brevet US 4 467 138 auquel on pourra avantageusement se référer.An example of a structure in this sense is described in particular in US Pat. No. 4,467,138 to which reference may advantageously be made.
Si ces câbles présentent l'avantage d'être d'un encombrement moins important que les câbles en 8, ils sont encore d'un poids et d'un coût non totalement satisfaisants.If these cables have the advantage of being less bulky than the cables at 8, they are still of a weight and cost that are not entirely satisfactory.
Par ailleurs, ces câbles, comme les câbles en 8, présentent l'inconvénient de nécessiter de ramener les porteurs métalliques à la terre au niveau des habitations, afin d'évacuer les éventuels courants de foudre dans ceux-ci.Furthermore, these cables, like the cables at 8, have the drawback of requiring the metal carriers to be brought to earth at the level of the dwellings, in order to evacuate any lightning currents therein.
On comprend que ceci entraîne, lors de la pose des câbles, des surcoûts de mains d'œuvre et de matériel importants. On connaît aussi des câbles d'une structure similaire à celle proposée dans le brevet US 4 467 138, mais qui ne comportent qu'une seule paire de fils, les fils qui constituent ladite paire étant disposés de part et d'autre du porteur métallique. Des câbles de ce type sont actuellement utilisés comme câble de raccordement d'abonné en France.It is understood that this entails, during the laying of the cables, additional costs of labor and material. Cables are also known of a structure similar to that proposed in US Pat. No. 4,467,138, but which comprise only a single pair of wires, the wires which constitute said pair being arranged on either side of the metal carrier. . Cables of this type are currently used as subscriber connection cable in France.
Ces câbles présentent, notamment quant à leur poids et leur coût, sensiblement les mêmes inconvénients que les câbles à gaine en 8 ou que les câbles du type de ceux décrits dans US 4 467 138. On connaît enfin également des câbles du type que ceux décrits dans les brevets US 4 761 053 et EP 0 468 689. Ces câbles comportent des porteurs en matériau diélectrique placés de part et d'autre de conducteurs métalliques isolés individuellement par des enveloppes. Ces porteurs diélectriques et les conducteurs isolés sont noyés dans une gaine en matériau plastique qui ne permet pas un accès aisé aux conducteurs.These cables have, in particular as regards their weight and cost, substantially the same drawbacks as cables with an 8 sheath or as cables of the type of those described in US 4,467,138. Finally, cables of the type as those described are also known. in US patents 4,761,053 and EP 0 468 689. These cables comprise carriers of dielectric material placed on either side of metallic conductors individually insulated by envelopes. These dielectric carriers and the insulated conductors are embedded in a plastic sheath which does not allow easy access to the conductors.
Cette structure ne permet pas des transmissions avec des débits élevés. Elle n'est en outre pas compatible avec l'utilisation de conducteurs métalliques torsadés dont elle ne permettrait pas le dénudage et avec lesquels se poseraient de nombreux problèmes de réalisation. L'invention a pour buts de pallier les problèmes posés par les différentes structures ci-dessus présentées en proposant un câble capable de transmettre des signaux haute fréquence, qui en outre permet de facilement désassembler les conducteurs, tout en permettant une bonne protection mécanique de ceux-ci. Elle propose un câble de télécommunication, et notamment un câble de raccordement d'abonné comportant une gaine, ainsi que deux porteurs en un matériau diélectrique et au moins une paire de fils métalliques qui s'étendent dans ladite gaine, caractérisé en ce que ladite gaine présente un tube central de part et d'autre duquel sont disposés les deux porteurs et à l'intérieur duquel s'étend ladite paire de fils métalliques, les fils métalliques de ladite paire étant des fils torsadés. Ainsi, avec le câble proposé, les conducteurs métalliques - disposés dans le tube - ne sont pas noyés dans la gaine, ce qui facilite leur désassemblage par rapport au reste de la gaine.This structure does not allow transmissions with high bit rates. It is also not compatible with the use of twisted metal conductors which it would not allow stripping and with which would arise many production problems. The invention aims to overcome the problems posed by the various structures presented above by providing a cable capable of transmitting high frequency signals, which also allows to easily disassemble the conductors, while allowing good mechanical protection of those -this. It provides a telecommunication cable, and in particular a subscriber connection cable comprising a sheath, as well as two carriers made of a dielectric material and at least one pair of metallic wires which extend in said sheath, characterized in that said sheath has a central tube on either side of which the two carriers are arranged and inside which extends said pair of metal wires, the metal wires of said pair being twisted wires. Thus, with the proposed cable, the metal conductors - arranged in the tube - are not embedded in the sheath, which facilitates their disassembly relative to the rest of the sheath.
En outre, la structure de la gaine permet l'utilisation de fils de conducteurs torsadés.In addition, the structure of the sheath allows the use of twisted conductor wires.
Elle autorise des débits numériques particulièrement élevés, ce que ne permettent pas les structures de l'art antérieur, tout en présentant les caractéristiques mécaniques souhaitées.It allows particularly high digital bit rates, which the structures of the prior art do not allow, while having the desired mechanical characteristics.
On notera en particulier que cette configuration permet avantageusement de limiter les contraintes de traction sur les conducteurs - ce qui est particulièrement important dans le cas de conducteurs torsadés lorsque l'on souhaite pouvoir atteindre des débits élevés - et de reporter les contraintes sur les porteurs en les répartissant symétriquement par rapport au tube. Dans un mode de réalisation avantageux de l'invention, le diamètre extérieur du tube central - c'est à dire sa hauteur - est inférieur à la hauteur de la gaine au niveau des porteurs. Cette caractéristique permet de protéger les conducteurs contenus dans le tube en cas de compression.It will be noted in particular that this configuration advantageously makes it possible to limit the tensile stresses on the conductors - which is particularly important in the case of twisted conductors when it is desired to be able to reach high flow rates - and to transfer the stresses to the carriers in distributing them symmetrically with respect to the tube. In an advantageous embodiment of the invention, the outside diameter of the central tube - that is to say its height - is less than the height of the sheath at the level of the carriers. This characteristic makes it possible to protect the conductors contained in the tube in the event of compression.
D'autres caractéristiques et avantages de l'invention ressortiront encore de la description qui suit, laquelle est purement illustrative et non limitative et doit être lue en regard des dessins annexés sur lesquels :Other characteristics and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting and should be read with reference to the appended drawings in which:
- la figure 1 est une représentation schématique en vue en coupe d'un câble conforme à un premier mode de réalisation possible pour l'invention; - la figure 2 est une représentation schématique en vue en coupe d'un câble conforme à un deuxième mode de réalisation possible pour l'invention ;- Figure 1 is a schematic representation in sectional view of a cable according to a first possible embodiment for the invention; - Figure 2 is a schematic representation in sectional view of a cable according to a second possible embodiment for the invention;
- les figures 3a et 3b sont des représentations schématiques en vue de dessus illustrant un type de fixation couramment utilisée avec des câbles d'abonnés. ;- Figures 3a and 3b are schematic representations in top view illustrating a type of fixing commonly used with subscriber cables. ;
- la figure 4 est une représentation similaire à celle de la figure 1 illustrant un autre mode de réalisation possible de l'invention. Le câble de la figure 1 comporte une gaine 1 , qui définit d'une part un tube central 2 dans lequel s'étend une paire de fils métalliques 6 torsadés ou une quarte (c'est à dire un ensemble constitué de quatre fils métalliques torsadés), et d'autre part deux sous-gaines 3 et 4 qui sont de part et d'autre de ce tube central 2 et dans lesquelles s'étendent des porteurs 5.- Figure 4 is a representation similar to that of Figure 1 illustrating another possible embodiment of the invention. The cable of FIG. 1 comprises a sheath 1, which defines on the one hand a central tube 2 in which extends a pair of twisted metallic wires 6 or a quarter (that is to say a set made up of four twisted metallic wires ), and on the other hand two sub-sheaths 3 and 4 which are on either side of this central tube 2 and in which extend the carriers 5.
Les porteurs 5 présentent la caractéristique d'être non pas en des matériaux métalliques mais en des matériaux diélectriques.The carriers 5 have the characteristic of being not of metallic materials but of dielectric materials.
Par exemple, ces porteurs 5 sont en mèches d'aramide, ou en mèches de verre. Un porteur 5 en mèches de verre est par exemple un porteur de 2 mm de largeur et de 0,19 mm d'épaisseur, susceptible de supporter 55 daN en traction.For example, these carriers 5 are made of aramid wicks, or glass wicks. A carrier 5 made of glass wicks is for example a carrier 2 mm wide and 0.19 mm thick, capable of supporting 55 daN in traction.
Un porteur 5 en mèches d'aramide serait de dimensions et de caractéristiques mécaniques similaires. Les fils métalliques 6 torsadés sont - de façon connue en soi - des fils de cuivre isolés.A carrier 5 made of aramid wicks would be of similar dimensions and mechanical characteristics. The twisted metal wires 6 are - in a manner known per se - insulated copper wires.
Dénudés, ces fils sont par exemple d'un diamètre externe entre 0,4 et 0,8mm, un diamètre externe de 0,6mm étant préféré.Bare, these wires are for example of an external diameter between 0.4 and 0.8mm, an external diameter of 0.6mm being preferred.
L'isolant utilisé pour ces fils de cuivre est avantageusement un polyéthylène basse densité, moyenne densité ou haute densité.The insulation used for these copper wires is advantageously low density, medium density or high density polyethylene.
Le diamètre externe des fils de cuivre 6 avec leur isolant est compris entre 0,65 mm et 1 ,30 mm, un diamètre externe de 0,96 mm étant préféré (ce diamètre externe préféré correspondant au diamètre externe dénudé de 0,6 mm indiqué ci-dessus). Les fils torsadés ont un pas d'assemblage qui peut être construit ou qui peut être alterné (technique sZ).The external diameter of the copper wires 6 with their insulator is between 0.65 mm and 1.30 mm, an external diameter of 0.96 mm being preferred (this preferred external diameter corresponding to the stripped external diameter of 0.6 mm indicated above). The twisted wires have an assembly pitch which can be constructed or which can be alternated (technique sZ).
Selon une variante avantageuse, la paire de fils de cuivre peut être entourée par une enveloppe intermédiaire (non représentée) qui assure une protection thermique et/ou mécanique. Cette enveloppe est par exemple constituée par un ruban de polyester dont on entoure la paire de fils 6.According to an advantageous variant, the pair of copper wires can be surrounded by an intermediate envelope (not shown) which provides thermal and / or mechanical protection. This envelope is for example constituted by a polyester ribbon with which the pair of wires 6 is surrounded.
La gaine 1 est quant à elle avantageusement en polyoléfine. Notamment, elle est de façon préférée en PVC ou en polyéthylène et de façon plus particulièrement préférentielle en polyéthylène haute densité (densité supérieure à 0,94), pour satisfaire aux contraintes de compatibilité avec l'isolant des fils de cuivre 6, ainsi que pour satisfaire aux exigences de vieillissement.The sheath 1 is advantageously made of polyolefin. In particular, it is preferably made of PVC or polyethylene and more particularly preferably of high density polyethylene (density greater than 0.94), to satisfy the compatibility constraints with the insulation of the copper wires 6, as well as to satisfy the aging requirements.
Le tube central 2 a un diamètre intérieur qui correspond sensiblement au diamètre de l'ensemble torsadé constitué par les fils métalliques 6.The central tube 2 has an internal diameter which corresponds substantially to the diameter of the twisted assembly formed by the metal wires 6.
Dans un mode de réalisation avantageux, le tube central 2 est rempli par un produit 9, tel qu'une gelée de pétrole, dans lequel les fils 6 sont noyés et qui assure ou contribue à l'étanchéité du câble. On rappelle qu'une telle gelée de pétrole constitue un gel non figé et n'impose par conséquent aucunement aux fils 6 des contraintes analogues à celles qui seraient imposées auxdits fils s'ils étaient noyés dans une matière rigide. Cette gelée de pétrole n'empêche pas le dégainage aisé des conducteurs pour la préparation des extrémités. La largeur d'un câble conforme à une telle structure (c'est à dire la distance entre les points les plus éloignés de la gaine 3 et de la gaine 4) est de 7,4mm + 0,4 mm, tandis que sa hauteur (c'est à dire sa dimension perpendiculairement au plan passant par les axes des porteurs 5 et du tubeIn an advantageous embodiment, the central tube 2 is filled with a product 9, such as petroleum jelly, in which the wires 6 are embedded and which ensures or contributes to the sealing of the cable. It will be recalled that such petroleum jelly constitutes a non-frozen gel and therefore in no way imposes on the wires 6 constraints similar to those which would be imposed on said wires if they were embedded in a rigid material. This petroleum jelly does not prevent the easy stripping of the conductors for the preparation of the ends. The width of a cable conforming to such a structure (that is to say the distance between the most distant points of the sheath 3 and of the sheath 4) is 7.4 mm + 0.4 mm, while its height (i.e. its dimension perpendicular to the plane passing through the axes of the carriers 5 and the tube
2) est de 3,5 mm + 0,4mm. La gaine 1 présente un allongement à la rupture supérieur à 300 %, la force de rupture étant supérieure à 18 MPa.2) is 3.5mm + 0.4mm. The sheath 1 has an elongation at break greater than 300%, the breaking force being greater than 18 MPa.
Vu en section comme représenté sur la figure 1 , le tube central 2 de la gaine 1 a une forme externe hexagonale, tandis que les sous-gaines 3 etSeen in section as shown in FIG. 1, the central tube 2 of the sheath 1 has a hexagonal external shape, while the sub-sheaths 3 and
4 ont des formes elliptiques avec un grand axe perpendiculaire au plan passant par les axes des porteurs 5 et du tube central 2.4 have elliptical shapes with a major axis perpendicular to the plane passing through the axes of the carriers 5 and of the central tube 2.
D'autres formes pourraient bien entendu être envisagées.Other forms could of course be envisaged.
Notamment, le tube central 2 et/ou les sous-gaines 3 et 4 peu(ven)t être de forme ronde.In particular, the central tube 2 and / or the sub-sheaths 3 and 4 can (be) be of round shape.
Le câble qui vient d'être décrit se réalise avec les techniques classiquement connues de l'homme du métier et notamment par extrusion de la gaine 1 sur les porteurs 5 et les fils métalliques 6. En outre, la gaine 1 peut présenter une autre forme externe que celle représentée sur la figure 1 et notamment une forme de section sensiblement rectangulaire.The cable which has just been described is produced with the techniques conventionally known to those skilled in the art and in particular by extruding the sheath 1 on the carriers 5 and the metal wires 6. In addition, the sheath 1 may have another external shape than that shown in Figure 1 and in particular a shape of substantially rectangular section.
La forme en section représentée sur la figure 1 présente toutefois l'avantage de protéger le tube 2 et la paire de fils de cuivre 6 en son intérieur contre les efforts de compression.The sectional shape shown in Figure 1 has the advantage of protecting the tube 2 and the pair of copper wires 6 therein against compression forces.
En effet, la hauteur des sous-gaines 3 et 4 est supérieure à celle du tube 2.In fact, the height of the sub-sheaths 3 and 4 is greater than that of the tube 2.
Les axes des sous-gaines 3 et 4 et du tube 2 étant centrés sur un même plan, le tube 2 se trouve situé entre les deux plans qui sont tangents aux deux sous-gaines 3 et 4 et est donc protégé contre les efforts de compression s'exerçant sur le câble perpendiculairement au plan passant par les axes des porteurs 5 et du tube central 2.The axes of the sub-sheaths 3 and 4 and of the tube 2 being centered on the same plane, the tube 2 is located between the two planes which are tangent to the two sub-sheaths 3 and 4 and is therefore protected against compression forces. acting on the cable perpendicular to the plane passing through the axes of the carriers 5 and the central tube 2.
On notera que de tels efforts sont notamment ceux susceptibles d'être exercés sur les câbles par les moyens habituellement utilisés en France par les services de France Telecom pour l'accrochage des câbles à des éléments de fixation.It will be noted that such efforts are in particular those likely to be exerted on the cables by the means usually used in France by the services of France Telecom for the attachment of cables to fasteners.
De tels moyens ont été illustrés sur les figures 3a et 3b avec un câbleSuch means have been illustrated in Figures 3a and 3b with a cable
C conforme à l'invention. Ils comportent un fourreau 8 dans lequel on engage le câble C conformé en boucle et une pièce 7 formant coin qui est alors enfoncée dans le fourreau et qui vient en appui sur les tranches du câble.C according to the invention. They comprise a sheath 8 in which the cable C is engaged in a loop and a part 7 forming a corner which is then pressed into the sheath and which comes to bear on the edges of the cable.
Avec une structure du type de celle représentée sur le figure 1 , seules les sous-gaines 3 et 4 sont alors sollicitées. D'autres modes de réalisation que celui représenté sur la figure 1 sont bien entendu envisageables.With a structure of the type shown in FIG. 1, only the sub-sheaths 3 and 4 are then stressed. Other embodiments than that shown in FIG. 1 are of course conceivable.
Notamment, ainsi que l'illustre la figure 4, les zones par lesquelles le tube 2 est relié aux sous-gaines 3 et 4 sont préférentiellement d'une hauteur I inférieure à l'épaisseur minimale e du tube 2. De telles zones définissent ainsi les languettes de déchirement qui permettent de déchirer simplement les deux porteurs gainés de la partie centrale de façon à accéder, sans outil spécial, à la paire de fils métalliques. Ainsi, pour une épaisseur radiale minimale de 0,4 mm pour le tube 2, ces languettes de déchirement sont d'une hauteur inférieure à 0,4 mm.In particular, as illustrated in FIG. 4, the zones by which the tube 2 is connected to the sheaths 3 and 4 are preferably of a height I less than the minimum thickness e of the tube 2. Such zones thus define the tear-off tabs which make it possible to simply tear the two sheathed carriers of the central part so as to access, without special tools, the pair of metal wires. Thus, for a minimum radial thickness of 0.4 mm for the tube 2, these tear tabs are less than 0.4 mm high.
Les structures qui viennent d'être décrites trouvent avantageusement application dans le cas de câbles de télécommunication aériens pour le raccordement d'un abonné à un réseau (câble dit de raccordement d'abonné, qui relie une habitation à un poteau d'un réseau de distribution).The structures which have just been described advantageously find application in the case of overhead telecommunication cables for the connection of a subscriber to a network (so-called subscriber connection cable, which connects a dwelling to a pole of a network of distribution).
On l'aura compris, la structure proposée présente de nombreux avantages.It will be understood, the proposed structure has many advantages.
L'utilisation de porteurs non métalliques permet une plus grande légèreté de structure, ainsi qu'un coût optimisé.The use of non-metallic carriers allows greater lightness of structure, as well as an optimized cost.
Elle permet d'éviter d'avoir à raccorder les porteurs à la terre en entrée des habitations : le câble proposé peut être tiré jusqu'à l'intérieur des habitations, contrairement aux câbles de raccordement connus à ce jour.It avoids having to connect the carriers to the ground at the entrance of the dwellings: the proposed cable can be drawn inside the dwellings, unlike the connection cables known to date.
Elle permet également la transmission de signaux haute fréquence sans déformation et garantit la transmission de données informatiques dans le cas d'applications connues sous la dénomination générique xDSL ("x Digital Subscriber Line" selon la terminologie anglosaxonne généralement utilisée) et notamment ADSL ("Asymétrie" ou "Asynchroneous" DSL selon la terminologie anglosaxonne) ou VDSL ("Very High Rate DSL"). It also allows the transmission of high frequency signals without distortion and guarantees the transmission of computer data in the case of applications known under the generic name xDSL ("x Digital Subscriber Line" according to the English terminology generally used) and in particular ADSL ("Asymmetry "or" Asynchronous "DSL according to English terminology) or VDSL (" Very High Rate DSL ").

Claims

REVENDICATIONS
1. Câble de télécommunication comportant une gaine (1), ainsi que deux porteurs (5) en un matériau diélectrique et au moins une paire de fils métalliques (6) qui s'étendent dans ladite gaine, caractérisé en ce que ladite gaine présente un tube (2) central de part et d'autre duquel sont disposés les deux porteurs et à l'intérieur duquel s'étend ladite paire de fils métalliques (6), les fils métalliques (6) de ladite paire étant des fils torsadés.1. Telecommunication cable comprising a sheath (1), as well as two carriers (5) made of a dielectric material and at least one pair of metallic wires (6) which extend in said sheath, characterized in that said sheath has a central tube (2) on either side of which the two carriers are arranged and inside which extends said pair of metal wires (6), the metal wires (6) of said pair being twisted wires.
2. Câble selon la revendication 1 , caractérisé en ce qu'un porteur diélectrique (5) est en mèches d'aramide ou mèches de verre.2. Cable according to claim 1, characterized in that a dielectric carrier (5) is made of aramid wicks or glass wicks.
3. Câble selon l'une des revendications précédentes, caractérisé en ce que la gaine (1) est en polyoléfine.3. Cable according to one of the preceding claims, characterized in that the sheath (1) is made of polyolefin.
4. Câble selon la revendication 3, caractérisé en ce que la gaine est en PVC ou en polyéthylène. 4. Cable according to claim 3, characterized in that the sheath is made of PVC or polyethylene.
5. Câble selon la revendication 4, caractérisé en ce que la gaine (1) est en polyéthylène haute densité.5. Cable according to claim 4, characterized in that the sheath (1) is made of high density polyethylene.
6. Câble selon l'une des revendications précédentes, caractérisé en ce que la ou les paire(s) de fils métalliques est (sont) entourée(s) par une enveloppe qui assure une protection thermique et/ou mécanique. 6. Cable according to one of the preceding claims, characterized in that the pair or pairs (s) of metal wires is (are) surrounded by an envelope which provides thermal and / or mechanical protection.
7. Câble selon la revendication 6, caractérisé en ce que cette enveloppe est en un ruban de polyester dont on entoure la ou les paire(s) de fils métalliques.7. Cable according to claim 6, characterized in that this envelope is made of a polyester ribbon with which one or the pair (s) of metal wires is surrounded.
8. Câble selon l'une des revendications précédentes, caractérisé en ce que le tube est rempli par une gelée dans laquelle les fils métalliques sont noyés et qui assure ou contribue à l'étanchéité du câble.8. Cable according to one of the preceding claims, characterized in that the tube is filled with a jelly in which the metal wires are embedded and which ensures or contributes to the tightness of the cable.
9. Câble selon l'une des revendications précédentes, caractérisé en ce que les axes des porteurs (5) sont centrés sur un même plan que l'axe du tube (2) et en ce que la hauteur des sous-gaines qui entourent les porteurs (5) de part et d'autre du tube (2) est supérieure à la hauteur externe du tube (2).9. Cable according to one of the preceding claims, characterized in that the axes of the carriers (5) are centered on the same plane as the axis of the tube (2) and in that the height of the sub-sheaths which surround the carriers (5) on either side of the tube (2) is greater than the external height of the tube (2).
10. Câble selon l'une des revendications 2 à 9, caractérisé en ce que les zones par lesquelles le tube (2) qui reçoit la ou les paire(s) de fils métalliques est relié aux sous-gaines (3, 4) dans lesquelles sont disposés les porteurs de part et d'autre dudit tube sont d'une hauteur inférieure à l'épaisseur minimale du tube.10. Cable according to one of claims 2 to 9, characterized in that the zones through which the tube (2) which receives the pair or pairs (s) of metal wires is connected to the sheaths (3, 4) in which are arranged the carriers on either side of said tube are of a height less than the minimum thickness of the tube.
11. Câble de raccordement d'abonné comportant une gaine (1), ainsi qu'au moins un porteur (5) et au moins une paire de fils métalliques (6) qui s'étendent dans ladite gaine, caractérisé en ce que ledit câble est un câble de télécommunication selon l'une des revendications précédentes.11. Subscriber connection cable comprising a sheath (1), as well as at least one carrier (5) and at least one pair of metallic wires (6) which extend in said sheath, characterized in that said cable is a telecommunication cable according to one of the preceding claims.
12. Câble de télécommunication pour la transmission de signaux haute fréquence, caractérisé en ce qu'il est constitué par un câble selon l'une des revendications 1 à 10. 12. Telecommunication cable for the transmission of high frequency signals, characterized in that it consists of a cable according to one of claims 1 to 10.
EP01907752A 2000-02-11 2001-02-09 Telecommunication cable, and in particular self-supported subscriber connection cable Expired - Lifetime EP1177561B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0001728A FR2805096B1 (en) 2000-02-11 2000-02-11 TELECOMMUNICATION CABLE, PARTICULARLY SUBSCRIBER CONNECTION CABLE, OF THE AUTOPORTE TYPE
FR0001728 2000-02-11
PCT/FR2001/000386 WO2001059792A1 (en) 2000-02-11 2001-02-09 Telecommunication cable, and in particular self-supported subscriber connection cable

Publications (2)

Publication Number Publication Date
EP1177561A1 true EP1177561A1 (en) 2002-02-06
EP1177561B1 EP1177561B1 (en) 2004-10-13

Family

ID=8846914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01907752A Expired - Lifetime EP1177561B1 (en) 2000-02-11 2001-02-09 Telecommunication cable, and in particular self-supported subscriber connection cable

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EP (1) EP1177561B1 (en)
AT (1) ATE279777T1 (en)
AU (1) AU3564301A (en)
DE (1) DE60106345D1 (en)
DZ (1) DZ3143A1 (en)
ES (1) ES2228811T3 (en)
FR (1) FR2805096B1 (en)
MA (1) MA25350A1 (en)
OA (1) OA11925A (en)
PT (1) PT1177561E (en)
TN (1) TNSN01023A1 (en)
WO (1) WO2001059792A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040211571A1 (en) * 2003-04-23 2004-10-28 Moreira Oswaldo M. Control line protector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761053A (en) * 1985-08-28 1988-08-02 American Telephone And Telegraph Company, At&T Bell Laboratories Communications transmission media
US5155304A (en) * 1990-07-25 1992-10-13 At&T Bell Laboratories Aerial service wire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0159792A1 *

Also Published As

Publication number Publication date
ATE279777T1 (en) 2004-10-15
DE60106345D1 (en) 2004-11-18
TNSN01023A1 (en) 2003-04-03
EP1177561B1 (en) 2004-10-13
FR2805096A1 (en) 2001-08-17
DZ3143A1 (en) 2001-08-16
MA25350A1 (en) 2001-12-31
FR2805096B1 (en) 2004-05-28
OA11925A (en) 2006-04-12
PT1177561E (en) 2005-02-28
WO2001059792A1 (en) 2001-08-16
AU3564301A (en) 2001-08-20
ES2228811T3 (en) 2005-04-16

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