FR2513801A1

FR2513801A1 - Flat ribbon cables forming cylinder conductor group - uses spiral winding of flat ribbon cable optionally with former, to give overall shape similar to conventional circular section conductor

Info

Publication number: FR2513801A1
Application number: FR8118194A
Authority: FR
Inventors: Michel Schaeffer
Original assignee: SOGEFID SARL
Current assignee: SOGEFID SARL
Priority date: 1981-09-28
Filing date: 1981-09-28
Publication date: 1983-04-01

Abstract

The spiral wound ribbon cable is protected by a metallic sheath to give security against electromagnetic induction in the conduction conductors of the ribbon cable from external sources. The spiral wound cable can be wound or bent as a conventional circular section cable. Access to the cable conductor is obtained by stripping off the protective sheath and unwinding part of the spiral, providing a flat portion for fitting of connectors. The cable is additionally provided with a cover to provide mechanical protection. The process facilitates the installation of such cables.

Description

L'invention se rapporte à la réalisation de câbles constitués de conducteurs ou de fibres isolés ou proteges, en particulier ceux utilisés pour la transmission de signaux ou d'ondes électriques ou optiques. The invention relates to the production of cables consisting of insulated or protected conductors or fibers, in particular those used for the transmission of electrical or optical signals or waves.

Les industries électriques & électroniques utilisent de olus en Dits plus de c blesrou 'ren nappe", le nombre de conducteurs n'etant pas limitatif, et les procédés de realisation des câbles plats eux-mêmes pouvant être modifiés ou améliorés. Mais ces câbles sont fragiles, et ne peuvent être utilises que dans des enceintes qui les protegent. Voir figure 1. The electrical & electronic industries use olus in so-called more cables, the number of conductors not being limiting, and the methods of making the flat cables themselves can be modified or improved. But these cables are fragile, and can only be used in enclosures that protect them, see figure 1.

De nombreux essais ont été réalisés pour proteger les nappes de fils isoles, mais ils conduisent à augmenter leur encombrement, et la protection reste médiocre. De plus la forme paticuliére et la largeur de ces câbles ne permettent pas le déploiement ou le passage de ceux-ci dans n'importe quelle direction, ce qui complique les schemas de câblage où ils sont utilisés. Cependant l'évolution des matériels conduit à utiliser de plus en plus les connexions utilisant les câbles plats,ainsi qu'à reduire l'encombrement des organes de liaison et de raccordement. Numerous attempts have been made to protect the layers of insulated wires, but they lead to an increase in their size, and the protection remains poor. In addition the particular shape and the width of these cables do not allow the deployment or the passage of these in any direction, which complicates the wiring diagrams where they are used. However, the evolution of the materials leads to more and more use of the connections using the flat cables, as well as to reducing the size of the connecting and connecting members.

Selon l'invention, les câbles plats seront soit enroules en spirale: voir la figure 2,les conducteurs restant parallèles à eux-mêmes, soit enroulés en helice avec ou sans déjoint: voir la figure 3, soit enroulés en hélice avec recouvrement: voir la figure 4, sur un support plein ou creux, ou sans support. Le câble ainsi dispose pourra être protégé par un revêtement classique tel que ruban, gaine, tresse, armure ou autre: voir la figure 5, ce qui est difficilement réalisable voire impossible avec un câble plat. According to the invention, the flat cables will either be wound in a spiral: see FIG. 2, the conductors remaining parallel to themselves, or wound in a helix with or without back-up: see FIG. 3, or wound in a helix with overlap: see Figure 4, on a solid or hollow support, or without support. The cable thus provided may be protected by a conventional coating such as tape, sheath, braid, armor or the like: see FIG. 5, which is difficult or even impossible with a flat cable.

L'invention permet avantageusement de réduire l'encombrement des câbles plats, etde permettre le pliage dans une direction quelconque à partir d'un point de fixation du câble. De plus la protection du câble pourra être réalisée par des procédés classiques, avec des outillages simples donc à moindre coût, elle n'augmentera pas sensiblement l'encom- brement et elle permettra la protection contre les perturbations électro- magnétiques. Enfin en ouvrant le revêtement du câble aux extrêmites, on pourra facilement dérouler et présenter à plat la nappe de fils pour l'utiliser soit dans les machines à denuder, à sertir ou autres, soit dans lesconnecteurs spéciaux qui necessitent ces câbles plats. The invention advantageously makes it possible to reduce the size of the flat cables, and to allow folding in any direction from a point of attachment of the cable. Furthermore, the protection of the cable can be carried out by conventional methods, with simple tools, therefore at low cost, it will not significantly increase the bulk and it will allow protection against electromagnetic disturbances. Finally, by opening the cable cover at the ends, it is easy to unroll and present the wire layer flat for use either in stripping, crimping or other machines, or in the special connectors that require these flat cables.

L'invention réunit donc la facilite de protection, de déroulement et de pose des câbles à section cylindrique, ainsi que les avantages des câbles plats imposés par les nécessites de la connectique dans les Industries electriques et électroniques. The invention therefore brings together the ease of protection, unwinding and laying of cables with cylindrical section, as well as the advantages of flat cables imposed by the needs of connectors in the electrical and electronic industries.

Claims

1. Method for producing cables of circu cross section

laire, characterized in that it uses flat cables wound in a spiral or helix.

2. Method according to claim 1, characterized in that the cable

flat wheat is rolled up on itself without support.

3. Method according to claim 1, characterized in that the flat cable is wound around a support of cylindrical or other shape, full or hollow.

4. Method according to claims 2 and 3, characterized in that the wound flat cable is protected by a metallic coating of wires or ribbons ensuring its protection against electromagnetic induction.

5. Method according to claims 2 and 3, characterized in that the coiled flat cable is protected by a coating ensuring its mechanical protection

6. Method according to claim 5, characterized in that the coiled flat cable is protected by a sheath arranged by tape or extrusion or the like.

7. Method according to claims 1, 2, 3, 4 and 5, characterized in that the wound and protected flat cable can itself be wound on a reel or unwound, or folded according to its radius of curvature, without taking into account the position of the conductors relative to the axis of the cable.

8. Method according to claims 5 and 7, characterized in that the coiled flat cable can be protected by a metallic armor in son, in corrugated ribbons or in helical ribbons.

9. A process according to claims 4, 5 and 6, characterized in that the ends of the wound and protected flat cable can be opened and stripped to allow the flat cable to be pulled out or unwound from its helix, and thus to allow it to be presented flat , so as to be able to use it in the connections or passages requiring this arrangement, or to separate the insulated wires from each other if necessary.