EP0554157B1 - Shielded connection prepared for mounting a connector - Google Patents

Shielded connection prepared for mounting a connector Download PDF

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Publication number
EP0554157B1
EP0554157B1 EP93400179A EP93400179A EP0554157B1 EP 0554157 B1 EP0554157 B1 EP 0554157B1 EP 93400179 A EP93400179 A EP 93400179A EP 93400179 A EP93400179 A EP 93400179A EP 0554157 B1 EP0554157 B1 EP 0554157B1
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EP
European Patent Office
Prior art keywords
expander
connector
shielding braid
connection arrangement
conductors
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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.)
Expired - Lifetime
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EP93400179A
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German (de)
French (fr)
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EP0554157A1 (en
Inventor
André Viaud
Pascal Clouet
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Filotex SA
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Filotex SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • H01R13/6593—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces

Definitions

  • the present invention relates to shielded links serving different connection points. It relates more particularly to an arrangement for connecting a connector to a terminal part of a shielded link used under conditions of strong electromagnetic illuminations.
  • Such a shielded link is of defined configuration and comprises, according to this configuration, a linear cord of conductors or a bundle consisting of multiple branches of conductors and its terminal connectors for connection to the various connection points.
  • the shielding against the electromagnetic disturbances of a linear cord and in particular of the linear parts of a bundle formed can be produced by metallic braiding shields.
  • the rear connection part of the connectors to the cord or harness must itself be protected by a shield. This protection can be obtained by grinding, to thread it on the rear part of the connector, the end of the shielding braid of the cord or of the branch of the bundle formed.
  • Document US-A-3,753,215 describes a method of connecting a connector t to a shielded cable, the cable comprising a set of insulated conductors, a braided shield screen and an outer sheath.
  • the set of conductors is mounted in a rear part of the connector.
  • the rear end of the connector is itself received in the terminal part of the sheath and pressurized against the underlying shielding screen. It is thus held in place by an external retaining band.
  • the shielding continuity thus ensured between the connector and the cable is not always very reliable.
  • the object of the present invention is to connect a connector to one end of an already shielded link, avoiding the aforementioned drawbacks and in particular allowing easy and rapid assembly of the connector, with high electromagnetic protection at its level and without degrading the shielding of the terminal part of the link connected to this connector.
  • the invention relates to a connector connection arrangement on a screened connection, comprising said screened connection comprising a conductor strand and a screen braid covering said strand and said connector having a so-called rear end for connection to a terminal part of said shielded connection, characterized in that it comprises a widener, of transverse dimensions substantially identical to those of said rear end of said connector, positioned on said end portion of said shielded connection substantially at the location of connection of said connector and at least partially covered by said preformed shielding braid on the expander, at its transverse dimensions.
  • FIG. 1 only one of the terminal parts of a shielded link 1 has been illustrated, which is pre-equipped for mounting a connector 2 (FIG. 2) on this terminal part.
  • This terminal part is designated below by the reference 1 of the link to which it belongs.
  • Such a shielded link has a preset configuration. It is constituted for example by a linear cord or by a bundle made up of conductors, this bundled made up having multiple branches and having one or more branches. It is connected to two terminal connectors on the cord or to as many connectors as there are multiple terminal branches of the bundle formed, to serve corresponding connection points.
  • the shielded connection is made of stranded conductors of which all or part of them belongs to the terminal part 1.
  • the conductors of this terminal part are designated under the reference 3.
  • This link is shielded over its entire length. This shielding is ensured, at least as regards the linear portions of the connection and therefore the terminal portion concerned 1, by a shielding braid, single or multi-layer, 4.
  • this terminal part 1 is equipped with an expander 5 mounted directly on its conductor strand, before its shielding.
  • the expander is positioned at the location where the aforementioned connector will be connected.
  • the shielding braid 4 is then executed, with the expander in place on the conductor strand, during the same braiding operations.
  • a positioner 6 is held substantially at the end of the strand of conductors 3. It serves as a front stop for the expander then correctly positioned and avoids the front displacement and the unexpected withdrawal of the latter during the braiding operations or subsequently from below. of the shielding braid.
  • This expander has identical transverse dimensions, as rigorously as possible, to those of the rear end of the connector.
  • the so-called rear end 5A of the expander, the innermost on the terminal part 1, is profiled by having a rounded or conical shape. It allows an easy and smooth transition of the shielding braid between the expander and the conductor strand, of different transverse dimensions.
  • the expander is made of hard material, which can be metal or plastic.
  • the shielding braid 4 produced in one or more layers overlapping one another, is executed continuously along the length of the terminal part already carrying the expander. It is thus preformed to the transverse dimensions of the expander and thereby to those of the rear end of the connector.
  • the braiding can be performed with different braiding steps on the expander and on the conductor strand, with a continuous variation at the transition, to allow if necessary and in particular when there is a significant difference in transverse dimensions between them, obtaining high performance protection over the entire length of the terminal part 1, including included on the expander.
  • the shielding braid 4 completely covers the expander, or may cover it only partially. Being preformed to the transverse dimension of the rear end of the connector, it avoids any crushing liable to degrade its characteristics when the connector is installed.
  • the expander 5 also serves as a bearing surface for cutting the correct length of the shielding braid 4. At the same time it protects the conductors it covers from injuries that this cutting could cause.
  • the section plane of the shielding braid is identified at 7, at a distance from the rear end of the expander substantially equal to the length of the rear connection end of the connector. This cut eliminates the excess braid length and removes the expander to slide the rear end of the connector under the shielding braid without deforming it.
  • fixing accessories such as 'a fixing ring 8 shown in dotted lines, when these accessories are of closed structure.
  • These accessories are deformable or retractable, for subsequent tightening of the shielding braid on the rear end of the connector, either by crimping or cryogenics or magnetostriction, in particular, depending on the nature of their materials.
  • different means can be used for fixing the shielding braid to the rear end of the connector.
  • a metallic and flexible protective strip 9, closed on itself, can also be associated with the fixing accessories, as shown in dotted lines.
  • FIG. 2 shows this terminal part 1 connected to its connector 2.
  • This connector has a body in two parts, one at the rear 11 and the other at the front 12 which are assembled to each other by a connecting nut 13 .
  • the rear part defines an expansion and distribution chamber for the conductors of the strand 3, the excess length of the conductors possibly being cut off. It is at the rear end which forms a rear collar 14 for entry of the conductors into the chamber and is threaded under the shielding braid, the latter being fixed by means such as 8, possibly with the intermediate protection 9.
  • the front part 12 comprises a plurality of contacts 15 mounted and retained in an insulating block 16, to which the conductors of the strand are connected.
  • the contacts are also protruding on the insulating block in the front face of the connector.
  • a front peripheral nut 17 on this connector ensures its locking on a complementary connector at the connection point of this terminal part.
  • the elements identical to those of FIG. 1 are designated by the same references.
  • the shielding braid is designated by the reference 4 ′ to translate its differences, specified below, with respect to the shielding braid in FIG. 1.
  • This shielding braid 4 ′ further comprises a self-locking loop 24 produced with the execution of the braid.
  • This loop is almost adjacent to the rear end 5A of the expander and extends over the conductor strand 3, over a few centimeters. It is obtained by a back and forth movement of the braiding, during the execution of the different layers or at least of the single final layer, when the shielding braid is multilayer, so as to form a double hem.
  • This loop prevents any slipping of the possible multiple layers of the shielding braid, one on the other, in particular during the cutting of excess length of the braid and the fitting and connecting the connector. It acts directly as a ring for fixing the shielding braid to the conductor strand.

Description

La présente invention porte sur les liaisons blindées desservant différents points de raccordement. Elle porte plus particulièrement sur un agencement de raccordement d'un connecteur sur une partie terminale d'une liaison blindée utilisée sous des conditions de fortes illuminations électromagnétiques.The present invention relates to shielded links serving different connection points. It relates more particularly to an arrangement for connecting a connector to a terminal part of a shielded link used under conditions of strong electromagnetic illuminations.

Une telle liaison blindée est de configuration définie et comporte, selon cette configuration, un cordon linéaire de conducteurs ou un faisceau constitué à branches multiples de conducteurs et ses connecteurs terminaux de raccordement aux différents points de raccordement.Such a shielded link is of defined configuration and comprises, according to this configuration, a linear cord of conductors or a bundle consisting of multiple branches of conductors and its terminal connectors for connection to the various connection points.

Pour certaines applications, il est impossible ou pas souhaitable d'équiper ces liaisons blindées de toute ou partie de leurs connecteurs, avant la pose de ces liaisons. Ceci est en particulier le cas lors d'une traversée de paroi, dans laquelle il ne peut être autorisé un passage suffisant pour le connecteur, ce dernier étant en général de diamètre plus fort que celui du cordon ou de la branche du faisceau constitué auquel il est normalement raccordé. Ceci peut également être le cas lorsque les connecteurs sont relativement fragiles et peuvent être endommagés lors de manipulations de transport ou de pose de la liaison.For certain applications, it is impossible or not desirable to equip these shielded connections with all or part of their connectors, before the installation of these connections. This is in particular the case during a wall crossing, in which a passage sufficient for the connector cannot be authorized, the latter generally being of larger diameter than that of the cord or of the branch of the bundle formed to which it is normally connected. This can also be the case when the connectors are relatively fragile and can be damaged during transport handling or fitting the connection.

D'une manière connue, le blindage contre les perturbations électromagnétiques d'un cordon linéaire et notamment des parties linéaires d'un faisceau constitué peut être réalisé par des tresses métalliques de blindage. La partie arrière de raccordement des connecteurs au cordon ou au faisceau doit elle-même protégée par un blindage. Cette protection peut être obtenue en triturant, pour l'enfiler sur la partie arrière du connecteur, l'extrémité de la tresse de blindage du cordon ou de la branche du faisceau constitué.In a known manner, the shielding against the electromagnetic disturbances of a linear cord and in particular of the linear parts of a bundle formed can be produced by metallic braiding shields. The rear connection part of the connectors to the cord or harness must itself be protected by a shield. This protection can be obtained by grinding, to thread it on the rear part of the connector, the end of the shielding braid of the cord or of the branch of the bundle formed.

Cette trituration dégrade la géométrie de la tresse. Si cette trituration est acceptable pour des liaisons devant subir des contraintes électromagnétiques faibles, elle ne l'est par contre pas pour celles devant subir des contraintes électromagnétiques élevées.This crush degrades the geometry of the braid. If this trituration is acceptable for links having to undergo weak electromagnetic stresses, it is not however for those having to undergo high electromagnetic stresses.

Le document US-A-3 753 215 décrit un mode de raccordement d'un connecteur t à un câble blindé, le câble comportant un ensemble de conducteurs isolés, un écran tressé de blindage et une gaine extérieure. L'ensemble des conducteurs est monté dans une partie arrière du connecteur. L'extrémité arrière du connecteur est elle-même reçue dans la partie terminale de la gaine et mise en pression contre l'écran de blindage sous-jacent. Elle est ainsi maintenue par une bande extérieure de retenue. La continuité de blindage ainsi assurée entre le connecteur et le câble n'est pas toujours très fiable.Document US-A-3,753,215 describes a method of connecting a connector t to a shielded cable, the cable comprising a set of insulated conductors, a braided shield screen and an outer sheath. The set of conductors is mounted in a rear part of the connector. The rear end of the connector is itself received in the terminal part of the sheath and pressurized against the underlying shielding screen. It is thus held in place by an external retaining band. The shielding continuity thus ensured between the connector and the cable is not always very reliable.

De manière également connue, on peut améliorer les performances peu élevées obtenues par enfilage de la tresse de blindage sur la partie arrière du connecteur, en montant une gaine thermorétractable sur la partie arrière du connecteur et le bout de la tresse. Cette gaine thermorétractrable doit assurer une étanchéité par dessus la tresse de blindage, mais en pratique il s'avère qu'une gaine suffisamment rétractable et parfaitement étanche est peu courante pour une différence importante entre les diamètres du connecteur et du cordon ou de la branche auquel est raccordé le connecteur. En outre, la pose de cette gaine, n'est pas toujours aisée, notamment quand le connecteur est raccordé compte-tenu qu'elle est assurée après la pose de la liaison.In a manner also known, it is possible to improve the low performances obtained by threading the shielding braid on the rear part of the connector, by mounting a heat-shrinkable sheath on the rear part of the connector and the end of the braid. This heat-shrinkable sheath must ensure a seal over the shielding braid, but in practice it turns out that a sufficiently retractable and perfectly sealed sheath is uncommon for a significant difference between the diameters of the connector and of the cord or branch to which the connector is connected. In addition, the installation of this sheath is not always easy, especially when the connector is connected, given that it is ensured after the connection has been installed.

La présente invention a pour but de raccorder un connecteur à une extrémité d'une liaison déjà blindée en évitant les inconvénients précités et permettant notamment un montage aisé et rapide du connecteur, avec une protection électromagnétique élevée à son niveau et sans dégradation du blindage de la partie terminale de la liaison raccordée à ce connecteur.The object of the present invention is to connect a connector to one end of an already shielded link, avoiding the aforementioned drawbacks and in particular allowing easy and rapid assembly of the connector, with high electromagnetic protection at its level and without degrading the shielding of the terminal part of the link connected to this connector.

Elle permet en outre avantageusement de remplacer un connecteur défectueux en place par un nouveau connecteur, dans les conditions précitées de montage et de protection.It also advantageously makes it possible to replace a defective connector in place with a new connector, under the aforementioned mounting and protection conditions.

L'invention porte sur un agencement de raccordement d'un connecteur sur une liaison blindée, comportant ladite liaison blindée comprenant un toron de conducteurs et une tresse de blindage recouvrant ledit toron et ledit connecteur ayant une extrémité dite arrière de raccordement à une partie terminale de ladite liaison blindée, caractérisé en ce qu'il comporte un élargisseur, de dimensions transversales sensiblement identiques à celles de ladite extrémité arrière dudit connecteur, positionné sur ladite partie terminale de ladite liaison blindée sensiblement à l'emplacement de raccordement dudit connecteur et au moins partiellement recouvert par ladite tresse de blindage préformée sur l'élargisseur, aux dimensions transversales de celui-ci.The invention relates to a connector connection arrangement on a screened connection, comprising said screened connection comprising a conductor strand and a screen braid covering said strand and said connector having a so-called rear end for connection to a terminal part of said shielded connection, characterized in that it comprises a widener, of transverse dimensions substantially identical to those of said rear end of said connector, positioned on said end portion of said shielded connection substantially at the location of connection of said connector and at least partially covered by said preformed shielding braid on the expander, at its transverse dimensions.

Cet agencement présente avantageusement en outre au moins l'une des caractéristiques additionnelles suivantes :

  • une extrémité dite arrière de l'élargisseur sur ladite partie terminale de la liaison blindée est de profilé arqué;
  • un positionneur monté sur ledit toron de conducteurs forme une butée d'une extrémité dite avant de l'élargisseur sur ladite partie terminale;
  • la tresse de blindage présente une boucle d'autoblocage, réalisée sur le toron conducteur, en étant quasi-attenante à l'élargisseur.
This arrangement advantageously also has at least one of the following additional characteristics:
  • a so-called rear end of the expander on said end portion of the shielded link is of arcuate profile;
  • a positioner mounted on said conductor strand forms a stop at a so-called front end of the expander on said end portion;
  • the braiding has a self-locking loop, made on the conductive strand, being almost adjacent to the expander.

Les caractéristiques et avantages de la présente invention ressortiront de la description d'exemples de réalisation illustrés dans les dessins ci-annexés. Dans ces dessins :

  • La figure 1 est une vue schématique et partielle en coupe d'une liaison blindée et prééquipée selon la présente invention, dont on n'a montré qu'une seule partie terminale blindée et ainsi prééquipée,
  • La figure 2 est une vue en coupe partielle de cette partie terminale à laquelle a été raccordé un connecteur,
  • la figure 3 est une variante donnée par rapport à la figure 1.
The characteristics and advantages of the present invention will emerge from the description of exemplary embodiments illustrated in the attached drawings. In these drawings:
  • FIG. 1 is a schematic and partial sectional view of a shielded and pre-equipped link according to the present invention, of which only one shielded and thus pre-equipped terminal part has been shown,
  • FIG. 2 is a view in partial section of this terminal part to which a connector has been connected,
  • FIG. 3 is a variant given with respect to FIG. 1.

Dans la figure 1, on n'a illustré qu'une seule des parties terminales d'une liaison blindée 1, qui est prééquipée pour le montage d'un connecteur 2 ( figure 2) sur cette partie terminale. Cette partie terminale est désignée ci-après par la référence 1 de la liaison à laquelle elle appartient.In FIG. 1, only one of the terminal parts of a shielded link 1 has been illustrated, which is pre-equipped for mounting a connector 2 (FIG. 2) on this terminal part. This terminal part is designated below by the reference 1 of the link to which it belongs.

Un telle liaison blindée est de configuration préétablie. Elle est constituée par exemple par un cordon linéaire ou par un faisceau constitué de conducteurs, ce faisceau constitué étant à branches multiples et à un ou plusieurs embranchements. Elle est raccordée à deux connecteurs terminaux sur le cordon ou à autant de connecteurs que de branches multiples terminales du faisceau constitué, pour desservir des points de raccordement correspondants.Such a shielded link has a preset configuration. It is constituted for example by a linear cord or by a bundle made up of conductors, this bundled made up having multiple branches and having one or more branches. It is connected to two terminal connectors on the cord or to as many connectors as there are multiple terminal branches of the bundle formed, to serve corresponding connection points.

La liaison blindée est à conducteurs toronnés dont tout ou partie d'entre eux appartient à la partie terminale 1. Les conducteurs de cette partie terminale sont désignés sous la référence 3.The shielded connection is made of stranded conductors of which all or part of them belongs to the terminal part 1. The conductors of this terminal part are designated under the reference 3.

Cette liaison est blindée sur toute sa longueur. Ce blindage est assuré, tout au moins en ce qui concerne les portions linéaires de la liaison et donc la partie terminale concernée 1, par une tresse de blindage, mono ou multicouches, 4.This link is shielded over its entire length. This shielding is ensured, at least as regards the linear portions of the connection and therefore the terminal portion concerned 1, by a shielding braid, single or multi-layer, 4.

Selon l'invention, cette partie terminale 1 est équipée d'un élargisseur 5 monté directement sur son toron de conducteurs, avant son blindage. L'élargisseur est positionné à l'emplacement où viendra se raccorder le connecteur précité. La tresse de blindage 4 est alors exécutée, avec l'élargisseur en place sur le toron de conducteurs, au cours des mêmes opérations de tressage.According to the invention, this terminal part 1 is equipped with an expander 5 mounted directly on its conductor strand, before its shielding. The expander is positioned at the location where the aforementioned connector will be connected. The shielding braid 4 is then executed, with the expander in place on the conductor strand, during the same braiding operations.

Avantageusement un positionneur 6 est maintenu sensiblement en bout du toron de conducteurs 3. Il sert de butée avant à l'élargisseur alors correctement positionné et évite le déplacement avant et le retrait inopiné de celui-ci au cours des opérations de tressage ou ultérieurement du dessous de la tresse de blindage.Advantageously, a positioner 6 is held substantially at the end of the strand of conductors 3. It serves as a front stop for the expander then correctly positioned and avoids the front displacement and the unexpected withdrawal of the latter during the braiding operations or subsequently from below. of the shielding braid.

Cet élargisseur est de dimensions transversales identiques, aussi rigoureusement que possible, à celles de l'extrémité arrière du connecteur. L'extrémité dite arrière 5A de l'élargisseur, la plus intérieure sur la partie terminale 1, est profilée en ayant une forme arrondie ou conique. Elle permet une transition aisée et douce de la tresse de blindage entre l'élargisseur et le toron de conducteurs, de dimensions transversales différentes.This expander has identical transverse dimensions, as rigorously as possible, to those of the rear end of the connector. The so-called rear end 5A of the expander, the innermost on the terminal part 1, is profiled by having a rounded or conical shape. It allows an easy and smooth transition of the shielding braid between the expander and the conductor strand, of different transverse dimensions.

L'élargisseur est en matériau dur, pouvant être en métal ou en plastique.The expander is made of hard material, which can be metal or plastic.

Il peut être réutilisé de nombreuses fois, en particulier lorsqu'il est de forme complexe et alors de coût relativement élevé.It can be reused many times, especially when it is complex in shape and then relatively expensive.

La tresse de blindage 4, réalisée en une ou plusieurs couches se recouvrant les unes des autres, est exécutée en continu sur la longueur de la partie terminale portant déjà l'élargisseur. Elle est ainsi préformée aux dimensions transversales de l'élargisseur et par là à celles de l'extrémité arrière du connecteur. Le tressage peut être exécuté avec des pas de tressage différents sur l'élargisseur et sur le toron de conducteurs, avec une variation continue à la transition, pour permettre le cas échéant et en particulier lors d'une différence importante de dimensions transversales entre eux, l'obtention d'une protection haute performance sur toute la longueur de la partie terminale 1, y compris sur l'élargisseur.The shielding braid 4, produced in one or more layers overlapping one another, is executed continuously along the length of the terminal part already carrying the expander. It is thus preformed to the transverse dimensions of the expander and thereby to those of the rear end of the connector. The braiding can be performed with different braiding steps on the expander and on the conductor strand, with a continuous variation at the transition, to allow if necessary and in particular when there is a significant difference in transverse dimensions between them, obtaining high performance protection over the entire length of the terminal part 1, including included on the expander.

La tresse de blindage 4 recouvre entièrement l'élargisseur, ou peut ne le recouvrir que partiellement. Etant préformée à la dimension transversale de l'extrémité arrière du connecteur, elle évite toute trituration susceptible de dégrader ses caractéristiques, lors de la pose du connecteur.The shielding braid 4 completely covers the expander, or may cover it only partially. Being preformed to the transverse dimension of the rear end of the connector, it avoids any crushing liable to degrade its characteristics when the connector is installed.

L'élargisseur 5 sert en outre de surface d'appui pour la coupe à la bonne longueur de la tresse de blindage 4. Il protège en même temps les conducteurs qu'il recouvre des blessures que pourrait occasionner cette coupe. Le plan de coupe de la tresse de blindage est repéré en 7, à une distance de l'extrémité arrière de l'élargisseur sensiblement égale à la longueur de l'extrémité arrière de raccordement du connecteur. Cette coupe permet d'éliminer l'excès de longueur de tresse et de retirer l'élargisseur pour glisser en place l'extrémité arrière du connecteur sous la tresse de blindage sans la déformer.The expander 5 also serves as a bearing surface for cutting the correct length of the shielding braid 4. At the same time it protects the conductors it covers from injuries that this cutting could cause. The section plane of the shielding braid is identified at 7, at a distance from the rear end of the expander substantially equal to the length of the rear connection end of the connector. This cut eliminates the excess braid length and removes the expander to slide the rear end of the connector under the shielding braid without deforming it.

Avantageusement, on prévoit initialement sur la partie terminale et prééquipée pour le montage du connecteur, ou on monte, après la coupe d'excès de longueur de la tresse de blindage et l'élimination de l'élargisseur, des accessoires de fixation, tels qu'un anneau de fixation 8 montré en pointillés, lorsque ces accessoires sont de structure fermée. Ces accessoires sont déformables ou rétractables, pour un serrage ultérieur de la tresse de blindage sur l'extrémité arrière du connecteur, soit par sertissage ou cryogénie ou magnétrostriction, notamment, selon la nature de leurs matériaux. Bien entendu des moyens différents peuvent être utilisés pour cette fixation de la tresse de blindage sur l'extrémité arrière du connecteur.Advantageously, provision is initially made on the terminal part and pre-equipped for mounting the connector, or mounting, after cutting the excess length of the shielding braid and eliminating the expander, fixing accessories, such as 'a fixing ring 8 shown in dotted lines, when these accessories are of closed structure. These accessories are deformable or retractable, for subsequent tightening of the shielding braid on the rear end of the connector, either by crimping or cryogenics or magnetostriction, in particular, depending on the nature of their materials. Of course, different means can be used for fixing the shielding braid to the rear end of the connector.

Un feuillard métallique et souple de protection 9, fermé sur lui-même peut également être associé aux accessoires de fixation, ainsi que représenté en pointillés.A metallic and flexible protective strip 9, closed on itself, can also be associated with the fixing accessories, as shown in dotted lines.

Il est enfilé sur l'extrémité de coupe de la tresse, après l'élimination de l'élargisseur. Il sert à protéger l'opérateur au cours du blocage de la tresse de blindage sur le connecteur, en évitant des piqures possibles occasionnées par les bouts de la tresse de blindage coupée, qu'il recouvre.It is threaded onto the cutting end of the braid, after the expander has been removed. It is used to protect the operator during the blocking of the shielding braid on the connector, avoiding possible bites caused by the ends of the shield braid cut, which it covers.

La figure 2 montre cette partie terminale 1 raccordée à son connecteur 2. Ce connecteur est à corps en deux parties, l'une arrière 11 et l'autre avant 12 qui sont assemblées l'une à l'autre par un écrou de liaison 13.FIG. 2 shows this terminal part 1 connected to its connector 2. This connector has a body in two parts, one at the rear 11 and the other at the front 12 which are assembled to each other by a connecting nut 13 .

La partie arrière définit une chambre d'expansion et de répartition des conducteurs du toron 3, l'excès de longueur des conducteurs étant éventuellement sectionné. Elle est à l'extrémité arrière qui forme un collet arrière 14 d'entrée des conducteurs dans la chambre et est enfilée sous la tresse de blindage, cette dernière étant fixée par les moyens tels que 8, avec éventuellement la protection intercalaire 9.The rear part defines an expansion and distribution chamber for the conductors of the strand 3, the excess length of the conductors possibly being cut off. It is at the rear end which forms a rear collar 14 for entry of the conductors into the chamber and is threaded under the shielding braid, the latter being fixed by means such as 8, possibly with the intermediate protection 9.

La partie avant 12 comporte une pluralité de contacts 15 montés et retenus dans un bloc isolant 16, auxquels sont raccordés les conducteurs du toron. Les contacts sont par ailleurs saillants sur le bloc isolant dans la face avant du connecteur. Un écrou périphérique avant 17 sur ce connecteur assure son verrouillage sur un connecteur complémentaire au point de raccordement de cette partie terminale.The front part 12 comprises a plurality of contacts 15 mounted and retained in an insulating block 16, to which the conductors of the strand are connected. The contacts are also protruding on the insulating block in the front face of the connector. A front peripheral nut 17 on this connector ensures its locking on a complementary connector at the connection point of this terminal part.

Dans la variante selon la figure 3, les éléments identiques à ceux de la figure 1 sont désignés par les mêmes références. La tresse de blindage est désignée par la référence 4' pour traduire ses différences, précisées ci-après, par rapport à la tresse de blindage de la figure 1.In the variant according to FIG. 3, the elements identical to those of FIG. 1 are designated by the same references. The shielding braid is designated by the reference 4 ′ to translate its differences, specified below, with respect to the shielding braid in FIG. 1.

Cette tresse de blindage 4' comporte en outre une boucle d'auto-blocage 24 réalisée avec l'exécution de la tresse. Cette boucle est quasi-attenante à l'extrémité arrière 5A de l'élargisseur et s'étend sur le toron de conducteurs 3, sur un à quelques centimètres. Elle est obtenue par un mouvement en va et vient du tressage, lors de l'exécution des différentes couches ou au moins de la seule couche finale, lorsque la tresse de blindage est multicouches, de manière à former un double ourlet.This shielding braid 4 ′ further comprises a self-locking loop 24 produced with the execution of the braid. This loop is almost adjacent to the rear end 5A of the expander and extends over the conductor strand 3, over a few centimeters. It is obtained by a back and forth movement of the braiding, during the execution of the different layers or at least of the single final layer, when the shielding braid is multilayer, so as to form a double hem.

Cette boucle évite tout glissement des éventuelles couches multiples de la tresse de blindage, les unes sur les autres, notamment lors de la coupe d'excès de longueur de la tresse et la mise en place et le raccordement du connecteur. Elle joue directement le rôle d'anneau de fixation de la tresse de blindage sur le toron de conducteurs.This loop prevents any slipping of the possible multiple layers of the shielding braid, one on the other, in particular during the cutting of excess length of the braid and the fitting and connecting the connector. It acts directly as a ring for fixing the shielding braid to the conductor strand.

Elle permet aussi le démontage du connecteur raccordé, pour des besoins de maintenance ou de réparation ou remplacement, sans sollicitation et déplacement résultant de la tresse de blindage sur le toron de conducteurs. Ceci est nécessaire et rendu autorisé et aisé, en particulier lorsque la liaison est utilisée dans des conditions de haute température, pour lesquelles ses connecteurs comportent des pièces en céramique et sont de ce fait fragiles. Cette même boucle d'auto-blocage s'oppose aussi aux déplacements relatifs de la tresse de blindage et du toron, avec les éventuelles sollicitations mécaniques en vibration dans certaines conditions d'utilisation, en évitant les frottements et les dégradations résultantes des isolants des conducteurs.It also allows the dismantling of the connected connector, for maintenance or repair or replacement needs, without stress and displacement resulting from the shielding braid on the conductor strand. This is necessary and made authorized and easy, in particular when the connection is used under high temperature conditions, for which its connectors include ceramic parts and are therefore fragile. This same self-locking loop also opposes the relative displacements of the shielding braid and the strand, with possible mechanical stresses in vibration under certain conditions of use, avoiding friction and resulting damage to the insulators of the conductors. .

Claims (10)

  1. A connection arrangement for connecting a connector to a shielded harness, including said shielded harness comprising a bundle of twisted-together conductors and a shielding braid covering said bundle, and said connector having a "rear" connection end at an end portion of said shielded harness, said connection arrangement being characterized in that it includes an expander (5) having cross-sectional dimensions substantially identical to those of said rear end (14) of said connector (2), the expander being positioned on said end portion of said shielded harness (1) substantially at the location at which said connector is to be connected, and being at least partially covered by said shielding braid (4) which is preformed over the expander and to the cross-sectional dimensions thereof.
  2. A connection arrangement according to claim 1, characterized in that a "rear" end of said expander (5) has a curved profile and constitutes a transition for said shielding braid (4), between said expander and said bundle of conductors (3), the rear end being that one of the ends of said expander which is innermost along said end portion.
  3. A connection arrangement according to claim 1 or 2, characterized in that said shielding braid (4) has a braiding pitch over said expander that is different from its braiding pitch over said bundle of conductors.
  4. A connection arrangement according to claim 3, characterized in that said shielding braid (4) has almost continuously varying pitch along a transition region between the expander and the bundle of conductors.
  5. A connection arrangement according to any one of claims 1 to 4, characterized in that it includes a positioner (6) disposed almost at the end of the bundle of conductors and abutting against the "front" end of the expander, the front end being the outermost one along said end portion.
  6. A connection arrangement according to any one of claims 1 to 5, characterized in that it includes fixing first "accessory" means (8) threaded over the shielding braid (4) of said shielded harness, upstream from said expander under said braid and for retaining the end of said shielding braid on said connector (2) when said connector is mounted in place of said expander and connected to said end portion of said shielded harness.
  7. A connection arrangement according to any one of claims 1 to 6, characterized in that it includes protective second "accessory" means (9) threaded over the shielding braid (4) of said shielded harness (1), upstream from said expander under said braid and for covering the end of said shielding braid once said connector (2) has been mounted in place of said expander on said harness.
  8. A connection arrangement according to any one of claims 1 to 7, characterized in that said shielding braid (4) of said shielded harness (1) includes a self-locking loop (24) made in the form of a double hem on said bundle of conductors (3) and almost adjoining said expander (5).
  9. A connection arrangement according to claim 8, characterized in that the length of said self-locking loop (24) lies in the range one centimeter to a few centimeters.
  10. A connection arrangement according to claim 9, having an end connector which is mounted at the location of said expander, which is connected to said bundle of conductors, and which is partially covered by said shielding braid, said harness being characterized in that said connector (2) is made dismountable and reconnectable to said harness by the presence of said self-locking loop (24) which makes reconnection feasible.
EP93400179A 1992-01-29 1993-01-26 Shielded connection prepared for mounting a connector Expired - Lifetime EP0554157B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200949A FR2686740B1 (en) 1992-01-29 1992-01-29 ARMORED LINK PRE-EQUIPPED FOR MOUNTING A CONNECTOR.
FR9200949 1992-01-29

Publications (2)

Publication Number Publication Date
EP0554157A1 EP0554157A1 (en) 1993-08-04
EP0554157B1 true EP0554157B1 (en) 1996-08-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400179A Expired - Lifetime EP0554157B1 (en) 1992-01-29 1993-01-26 Shielded connection prepared for mounting a connector

Country Status (5)

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US (1) US5295868A (en)
EP (1) EP0554157B1 (en)
DE (1) DE69304088T2 (en)
ES (1) ES2090895T3 (en)
FR (1) FR2686740B1 (en)

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FR2686728B1 (en) * 1992-01-29 1994-03-18 Filotex ARMORED LINK SAID IN FISH EDGE.
JP3673527B2 (en) * 1993-04-30 2005-07-20 矢崎総業株式会社 Shield wire connection terminal
US5508475A (en) * 1994-08-22 1996-04-16 Transtechnology Corporation Termination apparatus for conduit, cable, and braided bundle
FR2728113A1 (en) * 1994-12-13 1996-06-14 Eurocopter France ARMORED ELECTRICAL CONDUCTOR HARNESS AND ITS REALIZATION PROCESS
US5984711A (en) * 1998-09-10 1999-11-16 Scimed Life Systems, Inc. Methods and apparatus for increasing wire diameter to improve connectability
JP3524521B2 (en) * 2001-07-03 2004-05-10 本田技研工業株式会社 Passage protection case structure for rear glass for convertible top
US7228625B1 (en) * 2006-07-12 2007-06-12 Yazaki North America, Inc. Method for attaching an electrical cable to a connector shield
US7811132B2 (en) * 2009-01-16 2010-10-12 The United States Of America As Represented By The Secretary Of The Navy Electromagnetic interference protective backshells for cables
US20150090491A1 (en) * 2013-10-02 2015-04-02 Tyco Electronics Corporation Electrical cable assembly having an electrical shield
DE102014204096A1 (en) * 2014-03-06 2015-09-10 Bayerische Motoren Werke Aktiengesellschaft Method for producing a coupling device and coupling device
US9780459B1 (en) * 2016-03-30 2017-10-03 Te Connectivity Corporation Linking cable connector

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DE1079148B (en) * 1959-01-28 1960-04-07 Karl Drescher Fa Method for stripping an electrical cable, in particular a cable provided with a metal braid
US3753215A (en) * 1971-04-12 1973-08-14 Us Navy Cable connector
US4026628A (en) * 1975-04-21 1977-05-31 Grumman Aerospace Corporation Electrical connector for cables and magnetic forming process for same
US4025145A (en) * 1976-05-17 1977-05-24 The United States Of America As Represented By The Secretary Of The Navy Repairable shielded cable connector
DE3615356A1 (en) * 1986-05-06 1987-11-12 Siemens Ag Cable plug for the connection of a cable to a computer unit
US5183417A (en) * 1991-12-11 1993-02-02 General Electric Company Cable backshell

Also Published As

Publication number Publication date
US5295868A (en) 1994-03-22
EP0554157A1 (en) 1993-08-04
FR2686740A1 (en) 1993-07-30
FR2686740B1 (en) 1994-04-01
ES2090895T3 (en) 1996-10-16
DE69304088T2 (en) 1997-01-02
DE69304088D1 (en) 1996-09-26

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