EP1016171B1 - Device for shielding connection between an enclosing case and a shielded cable - Google Patents

Device for shielding connection between an enclosing case and a shielded cable Download PDF

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Publication number
EP1016171B1
EP1016171B1 EP98943994A EP98943994A EP1016171B1 EP 1016171 B1 EP1016171 B1 EP 1016171B1 EP 98943994 A EP98943994 A EP 98943994A EP 98943994 A EP98943994 A EP 98943994A EP 1016171 B1 EP1016171 B1 EP 1016171B1
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EP
European Patent Office
Prior art keywords
ferrule
protective
shielding
fact
ring
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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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EP98943994A
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German (de)
French (fr)
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EP1016171A1 (en
Inventor
Robert Axon'Cable S.A. CABES
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Axon Cable SA
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Axon Cable SA
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Publication of EP1016171A1 publication Critical patent/EP1016171A1/en
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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
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel

Definitions

  • the invention relates to a shield connection device between a protective and shielding box for a high-voltage device and a cable shielded comprising at least two conductors and a shielding braid tubular surrounding said conductors.
  • the object of the invention is to ensure continuity shielding between the protective and shielding box of a high-voltage device such as a discharge lamp and the housing protection and shielding of a high voltage generator.
  • Discharge lamps need a high voltage supply of the order of 20 to 25 kV to ensure their operation, especially during of their re-ignition. Without specific protection, the cable supplying these discharge lamps generate electromagnetic interference which can disrupt the electronic equipment of an automobile, such as radio, air conditioning, on-board computer, ... We understand that, to use discharge lamps in an automobile, it is necessary to carry out a protection electromagnetic high voltage power cable from the lamp to dump.
  • the purpose of the shield connection according to the invention is to ensure the shielding continuity between a shielded cable and each of the protection and shielding that surrounds an electrical device to which are connected the conductors contained in the shielded cable, in order to prevent the emission of electromagnetic interference by the shielded cable.
  • Shielding efficiency can be measured using the impedance of transfer of the assembly constituted by the shielding and the housing.
  • the impedance of transfer defines in a given frequency the contact resistance between the shielding and housing for this frequency range.
  • the techniques of 360 ° electrical continuity offer the better transfer impedance.
  • the receptacle comprising all the elements forming a headlamp, such as a headlamp for a vehicle automobile, is of very limited size, so that the connection of shielding between the protective housing and shielding of the discharge lamp and the protection and shielding box of the high voltage generator must be able to enter a very limited space. So, we understand that it is desirable that the shield connection device has a small footprint, can be easily disassembled and makes a connection shielding as efficient as possible.
  • an object of the invention is to provide a shielding connection device which has the aforementioned advantages and which ensures optimum shielding continuity despite a succession of assembly and disassembly of the shielding connection device.
  • the electrical continuity of the braid constituting the cable shield is provided by the ferrule.
  • This is profiled to receive the braid on its first end, the contact being achieved through the clamping ring.
  • the second end of the ferrule is profiled to be in contact with the protective and shielding box of the high-voltage device on a 360 ° angle, thanks to the cooperation between the elastic retaining ring and the annular rib of revolution of the ferrule.
  • This 360 ° contact allows, in addition to an impedance of satisfactory transfer, removable rotary contact.
  • FIG. 2 We will refer to Figure 2 to better visualize how the shield connection is made between the braid 26 and the protective box and shielding 12, by means of a shielding connection device 10.
  • the ferrule 30 serves as an intermediate piece allowing, thanks to a suitable form, to carry out the shielding continuity between the braid 26 and the housing 12.
  • the annular clamping ring 46 which is shaped to allow this support contact of the braid on substantially the entire periphery of the first end 34 of the ferrule 30.
  • Such a clamping ring 46 may be similar to the collar of connection described in French patent 2,671,435 of the applicant.
  • the continuity of the shielding also takes place at the level of the second end 36 of the ferrule 30 which is shaped to allow a 360 ° contact with the wall of the housing 12.
  • the second end 36 of the ferrule of revolution 30 has an annular rib of revolution 38 comprising a shoulder 40 turned towards the edge free from the second end 36 of the ferrule 30.
  • This shoulder 40 has an annular contact surface 42, planar and orthogonal to the axis of revolution of the ferrule 30.
  • this contact surface 42 can come to bear against the annular zone 44 of the outer surface of the housing 12 which surrounds the opening 28, it is expected that the annular rib 38 has a diameter outside greater than the diameter of the opening 28.
  • the cylindrical surface of annular revolution 43 which is longitudinal and contiguous to the radial contact surface 42 at the level of the shoulder 40 enters the opening 28 of the housing 12 and therefore has a diameter at more equal to the diameter of the opening 28.
  • an elastic retaining ring 54 is mounted so removable on the second end 36 of the ferrule 30, this ring of elastic support 54 being shaped so that its outer contour 60 is based on the internal face of the housing 12 and so that its internal contour 58 either retained against stop means integral with the second end 36 of ferrule 30.
  • these abutment means consist of a abutment rib 62 annular, of revolution and adjacent to the free edge of the second end 36 of the ferrule 30.
  • the shielded cable 20 is located the inside of a protective sheath 64, preferably flexible, surrounding the braid 26 at least up to the clamping ring 46.
  • This protective sheath 64 is preferably made of a flexible material such as the elastomer and is intended to mechanically protect the braid 26 so to avoid any alteration of the shielding continuity provided between the two boxes 12 and 16 by this braid 26.
  • FIG. 3 illustrates a ferrule 30 which is metallic and is made for example in a Cu-Zn alloy which can be coated with a metallic layer minimizing the electrical resistance of contact with the housing 12 or 16, preferably a layer of nickel of a thickness between 2 and 5 ⁇ m.
  • this has a length of 9.6 mm
  • its first end cylindrical 34 has a diameter of 9.8 mm
  • a bead 66 is arranged over the entire periphery of the first end 34 at the free edge to prevent sliding of the clamping ring and the separation between the first end 50 of the braid 26 and the ferrule 30.
  • the internal diameter of the ferrule is for example of the order of 8.2 mm.
  • the rib annular of revolution 38 having a crenellated profile and the shoulder 40 delimiting the side of the annular rib of revolution 38 facing the free edge of the second end 36 of the ferrule 30.
  • This shoulder 40 has the contact surface 42 and the cylindrical surface of revolution 43.
  • the diameter of the surface 43 is equal to the diameter of the circular opening 28 of the housing 12, for example of the order of 10 mm.
  • the free edge of the second end 36 of the ferrule 30 has a second annular rib of revolution 62 having a section cross-shaped niche.
  • the outside diameter of the second rib 62 is equal to the outside diameter of the surface 43 (10 mm) so that there is a shoulder 72 between the surface 68 and the surface 43.
  • the change in diameter at the shoulders 70 and 72 that is to say the difference in diameter between the surfaces 43 and 68, is by example of the order of 1 mm.
  • the distance separating the annular rib 38 abutment means constituted by the rib 62 is substantially equal to the sum of the thickness of the wall of the annular zone 44 of the protective and shielding casing 12 around the opening 28 and the distance separating the planes including the interior contour respectively 58 and the outer contour 60 of the retaining ring 54.
  • the wall of the housing 12 has a thickness of 0.3 mm equal to the thickness of the ring formed by the surface 43 and the width of the peripheral surface 68 is equal to the distance separating the plans comprising respectively the inner contour 58 and the contour outside 60 of the retaining ring 54, for example 1.3 mm.
  • FIGS. 4, 5A and 5B we will now refer to FIGS. 4, 5A and 5B in order to illustrate the forms elastic retaining rings 54 and 56.
  • the elastic retaining ring 54 In front view (FIG. 4), the elastic retaining ring 54 is not closed but extends over an angle at the center of at least 200 °, preferably at least 270 ° and again more preferable between 290 and 320 °.
  • the outer contour has an arc shape.
  • the inner contour comprises three sections of circular arc 74 between which are formed recesses 76.
  • the interior contour 58 is strictly in the shape of a circular arc provided that the material in which is made the elastic retaining ring 54 is sufficiently flexible.
  • This elastic retaining ring 54 can be made of plastic, metal or any other material sufficiently elastic to allow to easily remove and replace the elastic retaining ring 54 between the rib 62 and the wall of the housing 12.
  • the ring 54 is made of XC 75 steel on which two coatings are made: one Zn10ZB coating (yellow bichromate zinc) and a finishing coating for resistance to salt spray for 400 hours before the appearance of rust red.
  • the elastic retaining ring 54 may have profiles with different shapes.
  • the retaining ring elastic 54 has a truncated cone-shaped profile and in FIG. 5B the elastic retaining ring has a domed profile in the form of meniscus. It is intended that, preferably, the elastic retaining rings 54 and 56 are identical and have a constant material thickness.
  • This protective element 78 is preferably molded on the outside of the housing 12 and extends at least from the annular rib 38 of the ferrule 30 to the free edge of the first end 34 of the ferrule 30 in surrounding a section of the ferrule 30, the clamping ring 46 and a section of the first end 50 of the braid 26.
  • the protective element 78 constitutes a sleeve substantially cylindrical protecting the connection device throughout the area of the ferrule which is located outside the housing 12. It should be noted that this element protection 78 does not prevent the device from being dismantled fitting, by removing the elastic retaining ring 54 as will be described below.
  • the sheath 64 can then be shorter.
  • the sheath can stop before the first end 34 of the ferrule 30 and in the case of a protection element 78 bent (figure 6), the sheath can stop before elbow while remaining in contact with the protective element 78 on a sufficient length to ensure sealing between these two elements.
  • the protective element 78 is further extends around a section 80 of the shielded cable 20 which is adjacent at the first end 34 of the ferrule 30, this section 80 forming an angle ⁇ not zero with the axis of revolution X of the ferrule 30.
  • the section 80 is rectilinear according to a direction Y forming an angle ⁇ of 90 ° with the axis X which is the axis of revolution of the ferrule 30.
  • the element of overmolded protection 78 forms an L-shaped sleeve, in particular at its hollow part surrounding the connection device 10 and the section 80. So preferential, the molded protection element 78 has a thickness more or less constant of the order of at least 1 mm and can be produced in any plastic that can be molded.
  • the corresponding length L the length of the shielded cable 20 separating the two boxes 12 and 16 is in the range of 150 to 300 mm.
  • sheath 64 around the braid 26 and, optionally, on a section of the ring 46.
  • the device for shield connection allows a 360 ° rotation of the connection shielding by rotating the ferrule 30 in the opening 28 of the housing. So, in the case where the shield connection device comprises a protection L-shaped 78, the section 80 can be oriented radially shielded cable 20 around opening 28 in the most desired direction judicious within the projector so that this connecting device according to the invention takes up as little space as possible.
  • the protective element 78 may consist of two complementary parts or shells in the form of half-rings coming surround the shielded cable 20 and attaching to each other by means of additional fixing.

Description

L'invention concerne un dispositif de raccord de blindage entre un boítier de protection et de blindage d'un appareil à haute tension et un câble blindé comprenant au moins deux conducteurs et une tresse de blindage tubulaire entourant lesdits conducteurs.The invention relates to a shield connection device between a protective and shielding box for a high-voltage device and a cable shielded comprising at least two conductors and a shielding braid tubular surrounding said conductors.

De façon plus précise, l'invention a pour objet d'assurer la continuité électrique du blindage entre le boítier de protection et de blindage d'un appareil à haute tension tel qu'une lampe à décharge et le boítier de protection et de blindage d'un générateur à haute tension.More specifically, the object of the invention is to ensure continuity shielding between the protective and shielding box of a high-voltage device such as a discharge lamp and the housing protection and shielding of a high voltage generator.

Les lampes à décharge ont besoin d'une alimentation en haute tension de l'ordre de 20 à 25 kV pour assurer leur fonctionnement, notamment lors de leur réallumage. Sans protection spécifique, le câble alimentant ces lampes à décharge engendre des interférences électromagnétiques pouvant perturber les équipements électroniques d'une automobile, tels que radio, climatisation, ordinateur de bord,... On comprend que, pour utiliser des lampes à décharge au sein d'une automobile, il faut effectuer une protection électromagnétique du câble d'alimentation en haute tension de la lampe à décharge.Discharge lamps need a high voltage supply of the order of 20 to 25 kV to ensure their operation, especially during of their re-ignition. Without specific protection, the cable supplying these discharge lamps generate electromagnetic interference which can disrupt the electronic equipment of an automobile, such as radio, air conditioning, on-board computer, ... We understand that, to use discharge lamps in an automobile, it is necessary to carry out a protection electromagnetic high voltage power cable from the lamp to dump.

Le but du raccord de blindage selon l'invention est d'assurer la continuité de blindage entre un câble blindé et chacun des boítiers de protection et de blindage qui entoure un appareil électrique auquel sont reliés les conducteurs contenus dans le câble blindé, afin d'empêcher l'émission d'interférences électromagnétiques par le câble blindé. L'efficacité de blindage peut être mesurée à l'aide de l'impédance de transfert de l'ensemble constitué par le blindage et le boítier. L'impédance de transfert définit dans une fréquence donnée la résistance de contact entre le blindage et le boítier pour cette plage de fréquences. Les techniques de raccordement présentant une continuité électrique sur 360° offrent la meilleure impédance de transfert.The purpose of the shield connection according to the invention is to ensure the shielding continuity between a shielded cable and each of the protection and shielding that surrounds an electrical device to which are connected the conductors contained in the shielded cable, in order to prevent the emission of electromagnetic interference by the shielded cable. Shielding efficiency can be measured using the impedance of transfer of the assembly constituted by the shielding and the housing. The impedance of transfer defines in a given frequency the contact resistance between the shielding and housing for this frequency range. The techniques of 360 ° electrical continuity offer the better transfer impedance.

Des solutions ont déjà été proposées afin d'effectuer le raccord de blindage entre un boítier de protection et de blindage et un câble blindé mais les dispositifs proposés comportent une structure figée qui n'est pas facilement démontable. Dans le cas des lampes à décharge, il peut être nécessaire de changer l'ampoule dont le culot est électriquement relié aux conducteurs du câble blindé, de sorte qu'il existe un besoin pour un dispositif de raccord de blindage pouvant être d'un montage et d'un démontage aisés et qui s'adapte facilement sur des boítiers de protection et de blindage différents.Solutions have already been proposed in order to carry out the connection of shielding between a protective and shielding box and a shielded cable but the proposed devices have a fixed structure which is not easily removable. In the case of discharge lamps, it may be necessary to change the bulb, the base of which is electrically connected to shielded cable conductors, so there is a need for a shielding connection device which can be of mounting and easy disassembly and which easily adapts to protective boxes and different shielding.

De plus, dans le cas des lampes à décharge, le réceptacle comprenant tous les éléments formant un projecteur, tel qu'un projecteur pour véhicule automobile, est de dimension très restreinte, de sorte que le raccord de blindage entre le boítier de protection et de blindage de la lampe à décharge et le boítier de protection et de blindage du générateur haute tension doit pouvoir rentrer dans un espace très restreint. Ainsi, on comprend qu'il est souhaitable que le dispositif de raccord de blindage présente un encombrement réduit, puisse être facilement démonté et réalise un raccord de blindage le plus efficace possible.In addition, in the case of discharge lamps, the receptacle comprising all the elements forming a headlamp, such as a headlamp for a vehicle automobile, is of very limited size, so that the connection of shielding between the protective housing and shielding of the discharge lamp and the protection and shielding box of the high voltage generator must be able to enter a very limited space. So, we understand that it is desirable that the shield connection device has a small footprint, can be easily disassembled and makes a connection shielding as efficient as possible.

Pour arriver à ce but, un objet de l'invention est de fournir un dispositif de raccord de blindage qui présente les avantages précités et qui assure une continuité de blindage optimum malgré une succession de montages et de démontages du dispositif de raccord de blindage.To achieve this aim, an object of the invention is to provide a shielding connection device which has the aforementioned advantages and which ensures optimum shielding continuity despite a succession of assembly and disassembly of the shielding connection device.

Pour atteindre ce but, le dispositif de raccord de blindage selon l'invention se caractérise en ce que ledit boítier de protection et de blindage comprend une ouverture circulaire et en ce que ledit dispositif forme un raccord de blindage tournant démontable comprenant :

  • une ferrule de révolution comprenant une première extrémité cylindrique et une deuxième extrémité présentant une nervure annulaire de révolution avec un épaulement tourné en direction opposée de ladite première extrémité et qui présente une surface plane et orthogonale à l'axe de révolution de ladite ferrule de façon à former une surface de contact destinée à venir contre une zone annulaire de la surface externe dudit boítier de protection et de blindage qui entoure ladite ouverture, le diamètre extérieur de ladite nervure étant supérieur au diamètre de ladite ouverture,
  • une bague de serrage maintenant un tronçon d'une extrémité de ladite tresse en contact d'appui sur sensiblement toute la périphérie de la première extrémité de ladite ferrule, et
  • un anneau de maintien élastique en forme d'arc de cercle s'étendant sur un angle au centre d'au moins 200°, ledit anneau ayant un contour intérieur et un contour extérieur compris dans deux plans différents, ledit contour extérieur étant destiné à être appliqué contre la face interne dudit boítier et ledit contour intérieur étant destiné à coopérer avec des moyens de butée solidaires de ladite deuxième extrémité de la ferrule.
To achieve this object, the shielding connection device according to the invention is characterized in that said protection and shielding housing comprises a circular opening and in that said device forms a removable rotating shielding connection comprising:
  • a ferrule of revolution comprising a first cylindrical end and a second end having an annular rib of revolution with a shoulder turned in the opposite direction from said first end and which has a flat surface and orthogonal to the axis of revolution of said ferrule so as to forming a contact surface intended to come against an annular zone of the external surface of said protective and shielding box which surrounds said opening, the external diameter of said rib being greater than the diameter of said opening,
  • a clamping ring holding a section of one end of said braid in contact with contact over substantially the entire periphery of the first end of said ferrule, and
  • an elastic retaining ring in the form of an arc of a circle extending over an angle at the center of at least 200 °, said ring having an internal contour and an external contour included in two different planes, said external contour being intended to be applied against the inner face of said housing and said inner contour being intended to cooperate with stop means integral with said second end of the ferrule.

On comprend que, grâce à l'invention, la continuité électrique de la tresse constituant le blindage du câble est assurée par la ferrule. Celle-ci est profilée pour recevoir la tresse sur sa première extrémité, le contact étant réalisé grâce à la bague de serrage. La deuxième extrémité de la ferrule est profilée pour être en contact avec le boítier de protection et de blindage de l'appareil à haute tension sur un angle de 360°, grâce à la coopération entre l'anneau de maintien élastique et la nervure annulaire de révolution de la ferrule.It is understood that, thanks to the invention, the electrical continuity of the braid constituting the cable shield is provided by the ferrule. This is profiled to receive the braid on its first end, the contact being achieved through the clamping ring. The second end of the ferrule is profiled to be in contact with the protective and shielding box of the high-voltage device on a 360 ° angle, thanks to the cooperation between the elastic retaining ring and the annular rib of revolution of the ferrule.

Ce contact sur 360° permet d'obtenir, outre une impédance de transfert satisfaisante, un contact tournant démontable.This 360 ° contact allows, in addition to an impedance of satisfactory transfer, removable rotary contact.

D'autres caractéristiques et avantages de la présente invention apparaítront plus clairement à la lecture de la description qui suit de plusieurs modes de réalisation de l'invention donnés à titre d'exemples non limitatifs. La description se réfère aux figures sur lesquelles :

  • la figure 1 est une vue en section longitudinale représentant un dispositif de raccord de blindage selon la présente invention permettant d'assurer une liaison blindée depuis une alimentation à haute tension jusqu'à un appareil à haute tension tel qu'une lampe à décharge ;
  • la figure 2 est une vue agrandie du détail II de la figure 1 ;
  • la figure 3 représente une ferrule en vue de côté ;
  • la figure 4 est une vue selon la direction IV-IV de la figure 2 permettant de visualiser l'anneau de maintien élastique depuis sa face avant ;
  • les figures 5A et 5B sont des vues en coupe transversale selon la direction V-V de la figure 4 pour deux formes d'anneau de maintien différentes ; et
  • la figure 6 est une vue analogue à celle de la figure 2 dans le cas où l'on utilise un élément de protection pour réaliser un raccord de blindage coudé.
Other characteristics and advantages of the present invention will appear more clearly on reading the following description of several embodiments of the invention given by way of non-limiting examples. The description refers to the figures in which:
  • Figure 1 is a longitudinal sectional view showing a shielding connection device according to the present invention for providing a shielded connection from a high voltage supply to a high voltage device such as a discharge lamp;
  • Figure 2 is an enlarged view of detail II of Figure 1;
  • Figure 3 shows a ferrule in side view;
  • Figure 4 is a view in the direction IV-IV of Figure 2 for viewing the elastic retaining ring from its front face;
  • FIGS. 5A and 5B are views in cross section in the direction VV of FIG. 4 for two different forms of retaining ring; and
  • Figure 6 is a view similar to that of Figure 2 in the case where a protective element is used to make a bent shield connection.

Sur la figure 1, on a représenté un dispositif de raccord de blindage 100 entre un premier boítier de protection et de blindage 12 d'un appareil à haute tension 14 tel qu'une lampe à décharge (la connexion électrique étant effectuée sur un connecteur de la lampe à décharge) et un deuxième boítier de protection et de blindage 16 contenant une alimentation à haute tension 18. L'appareil à haute tension 14 et l'alimentation à haute tension 18 sont raccordés l'un à l'autre par un câble blindé 20 comprenant deux conducteurs 22 et 24 ainsi qu'une tresse de blindage 26 tubulaire entourant lesdits conducteurs. Pour permettre le raccord de blindage entre la tresse de blindage 26 et les deux boítiers 12 et 16, ces deux boítiers comprennent une ouverture circulaire 28 et le dispositif de raccord de blindage 100 comprend en outre :

  • une première et une deuxième ferrules de révolution 30, 32, chacune d'entre elle comprenant une première extrémité cylindrique 34 et une deuxième extrémité 36 présentant une nervure annulaire de révolution 38 avec un épaulement 40 tourné en direction opposée de ladite première extrémité 34, ledit épaulement présentant une surface plane et orthogonale à l'axe de révolution X de ladite ferrule 30 ou 32 de façon à former une surface de contact 42, la surface de contact 42 de ladite première ferrule 30 étant destinée à venir contre ladite zone annulaire 44 de la surface externe du boítier de protection et de blindage 12 dudit appareil à haute tension 14 qui entoure ladite ouverture 28 et la surface de contact 42 de ladite deuxième ferrule 32 étant destinée à venir contre une zone annulaire 44 de la surface externe du deuxième boítier de protection et de blindage 16 qui entoure ladite ouverture 28, le diamètre extérieur de ladite nervure 38 étant supérieur au diamètre de ladite ouverture 28,
  • une première et une deuxième bagues de serrage 46, 48, ladite première bague de serrage 46 maintenant un tronçon de la première extrémité 50 de ladite tresse 26 en contact d'appui sur sensiblement toute la périphérie de la première extrémité 34 de la première ferrule 30 et ladite deuxième bague de serrage 48 maintenant un tronçon de la deuxième extrémité 52 de ladite tresse 26 en contact d'appui sur sensiblement toute la périphérie de la première extrémité 34 de la deuxième ferrule 32, et
  • un premier et un deuxième anneaux de maintien 54, 56 élastique en forme d'arc de cercle s'étendant sur un angle au centre d'au moins 200°, lesdits anneaux 54, 56 ayant un contour intérieur 58 et un contour extérieur 60 compris dans deux plans différents, ledit contour extérieur 60 du premier anneau 54 étant destiné à être appliqué contre la face interne dudit boítier de protection et de blindage 12 dudit appareil à haute tension 14, ledit contour intérieur 58 du premier anneau 54 étant destiné à coopérer avec des moyens de butée 62 solidaires de ladite deuxième extrémité 36 de la première ferrule 30, ledit contour extérieur 60 du deuxième anneau 56 étant destiné à être appliqué contre la face interne dudit deuxième boítier de protection et de blindage 16 et ledit contour intérieur 58 du deuxième anneau 56 étant destiné à coopérer avec des moyens de butée 62 solidaires de ladite deuxième extrémité 36 de la deuxième ferrule 32.
In Figure 1, there is shown a shielding connection device 100 between a first protective and shielding housing 12 of a high-voltage device 14 such as a discharge lamp (the electrical connection being made on a connector discharge lamp) and a second protection and shielding box 16 containing a high voltage supply 18. The high voltage device 14 and the high voltage supply 18 are connected to each other by a cable shielded 20 comprising two conductors 22 and 24 as well as a tubular shielding braid 26 surrounding said conductors. To allow the shielding connection between the shielding braid 26 and the two housings 12 and 16, these two housings include a circular opening 28 and the shielding connection device 100 further comprises:
  • first and second ferrules of revolution 30, 32, each of them comprising a first cylindrical end 34 and a second end 36 having an annular rib of revolution 38 with a shoulder 40 turned in the opposite direction from said first end 34, said shoulder having a flat surface and orthogonal to the axis of revolution X of said ferrule 30 or 32 so as to form a contact surface 42, the contact surface 42 of said first ferrule 30 being intended to come against said annular zone 44 of the external surface of the protective and shielding casing 12 of said high-voltage device 14 which surrounds said opening 28 and the contact surface 42 of said second ferrule 32 being intended to come against an annular zone 44 of the external surface of the second casing of protection and shielding 16 which surrounds said opening 28, the outside diameter of said rib 38 being greater ith the diameter of said opening 28,
  • first and second clamping rings 46, 48, said first clamping ring 46 maintaining a section of the first end 50 of said braid 26 in bearing contact over substantially the entire periphery of the first end 34 of the first ferrule 30 and said second clamping ring 48 maintaining a section of the second end 52 of said braid 26 in bearing contact over substantially the entire periphery of the first end 34 of the second ferrule 32, and
  • first and second retaining rings 54, 56 elastic in the form of an arc of a circle extending over a central angle of at least 200 °, said rings 54, 56 having an internal contour 58 and an external contour 60 included in two different planes, said external contour 60 of the first ring 54 being intended to be applied against the internal face of said protective and shielding casing 12 of said high-voltage device 14, said internal contour 58 of the first ring 54 being intended to cooperate with stop means 62 integral with said second end 36 of the first ferrule 30, said outer contour 60 of the second ring 56 being intended to be applied against the internal face of said second protective and shielding casing 16 and said inner contour 58 of the second ring 56 being intended to cooperate with stop means 62 integral with said second end 36 of the second ferrule 32.

On se reportera à la figure 2 afin de mieux visualiser comment s'effectue le raccord de blindage entre la tresse 26 et le boítier de protection et de blindage 12, grâce à un dispositif de raccord de blindage 10. On comprend que la ferrule 30 sert de pièce intermédiaire permettant, grâce à une forme adaptée, d'effectuer la continuité de blindage entre la tresse 26 et le boítier 12. Au niveau de la première extrémité 34 de la ferrule 30, il existe un contact serré entre la première extrémité 50 de la tresse 26 et toute la périphérie de la première extrémité cylindrique 34 de la ferrule 30. Ce contact sur 360° est assuré grâce à la bague de serrage 46 annulaire qui est conformée pour permettre ce contact d'appui de la tresse sur sensiblement toute la périphérie de la première extrémité 34 de la ferrule 30.We will refer to Figure 2 to better visualize how the shield connection is made between the braid 26 and the protective box and shielding 12, by means of a shielding connection device 10. On understands that the ferrule 30 serves as an intermediate piece allowing, thanks to a suitable form, to carry out the shielding continuity between the braid 26 and the housing 12. At the first end 34 of the ferrule 30, there are a tight contact between the first end 50 of the braid 26 and the entire periphery of the first cylindrical end 34 of the ferrule 30. This 360 ° contact is ensured by the annular clamping ring 46 which is shaped to allow this support contact of the braid on substantially the entire periphery of the first end 34 of the ferrule 30.

Une telle bague de serrage 46 peut être similaire au collier de raccordement décrit dans le brevet français 2 671 435 de la demanderesse.Such a clamping ring 46 may be similar to the collar of connection described in French patent 2,671,435 of the applicant.

La continuité du blindage s'effectue également au niveau de la deuxième extrémité 36 de la ferrule 30 qui est conformée pour permettre un contact sur 360° avec la paroi du boítier 12. Pour cela, la deuxième extrémité 36 de la ferrule de révolution 30 comporte une nervure annulaire de révolution 38 comportant un épaulement 40 tourné en direction du bord libre de la deuxième extrémité 36 de la ferrule 30. Cet épaulement 40 comporte une surface de contact 42 annulaire, plane et orthogonale à l'axe de révolution de la ferrule 30.The continuity of the shielding also takes place at the level of the second end 36 of the ferrule 30 which is shaped to allow a 360 ° contact with the wall of the housing 12. For this, the second end 36 of the ferrule of revolution 30 has an annular rib of revolution 38 comprising a shoulder 40 turned towards the edge free from the second end 36 of the ferrule 30. This shoulder 40 has an annular contact surface 42, planar and orthogonal to the axis of revolution of the ferrule 30.

Afin que cette surface de contact 42 puisse venir en appui contre la zone annulaire 44 de la surface extérieure du boítier 12 qui entoure l'ouverture 28, il est prévu que la nervure annulaire 38 présente un diamètre extérieur supérieur au diamètre de l'ouverture 28. En outre, il est prévu que la surface cylindrique de révolution annulaire 43 qui est longitudinale et contiguë à la surface de contact radiale 42 au niveau de l'épaulement 40 pénètre dans l'ouverture 28 du boítier 12 et possède donc un diamètre au plus égal au diamètre de l'ouverture 28.So that this contact surface 42 can come to bear against the annular zone 44 of the outer surface of the housing 12 which surrounds the opening 28, it is expected that the annular rib 38 has a diameter outside greater than the diameter of the opening 28. In addition, it is intended that the cylindrical surface of annular revolution 43 which is longitudinal and contiguous to the radial contact surface 42 at the level of the shoulder 40 enters the opening 28 of the housing 12 and therefore has a diameter at more equal to the diameter of the opening 28.

Afin de contraindre la surface de contact 42 à rester en appui contre la zone annulaire 44, un anneau de maintien élastique 54 est monté de façon amovible sur la deuxième extrémité 36 de la ferrule 30, cet anneau de maintien élastique 54 étant conformé pour que son contour extérieur 60 s'appuie sur la face interne du boítier 12 et pour que son contour intérieur 58 soit retenu contre des moyens de butée solidaires de la deuxième extrémité 36 de la ferrule 30.In order to force the contact surface 42 to remain in abutment against the annular zone 44, an elastic retaining ring 54 is mounted so removable on the second end 36 of the ferrule 30, this ring of elastic support 54 being shaped so that its outer contour 60 is based on the internal face of the housing 12 and so that its internal contour 58 either retained against stop means integral with the second end 36 of ferrule 30.

De façon préférentielle, ces moyens de butée sont constitués d'une nervure de butée 62 annulaire, de révolution et adjacente au bord libre de la deuxième extrémité 36 de la ferrule 30.Preferably, these abutment means consist of a abutment rib 62 annular, of revolution and adjacent to the free edge of the second end 36 of the ferrule 30.

D'après la description précédente du dispositif de raccord de blindage 10, on comprend que celui-ci possède une symétrie de révolution permettant à la fois un contact sur 360° assurant une impédance de transfert correcte entre la tresse 26 et les boítiers 12 et 16 et la possibilité d'effectuer une rotation de 360° entre la ferrule 30 et l'ouverture 28.From the previous description of the shield connection device 10, we understand that it has a symmetry of revolution allowing both 360 ° contact ensuring transfer impedance correct between the braid 26 and the boxes 12 and 16 and the possibility of carrying out a 360 ° rotation between the ferrule 30 and the opening 28.

Il est prévu que, de préférence, le câble blindé 20 soit situé à l'intérieur d'une gaine de protection 64, de préférence souple, entourant la tresse 26 au moins jusqu'à la bague de serrage 46. Cette gaine de protection 64 est réalisée, de préférence, dans une matière souple telle que de l'élastomère et est destinée à protéger mécaniquement la tresse 26 afin d'eviter une quelconque altération de la continuité de blindage assurée entre les deux boítiers 12 et 16 par cette tresse 26.It is intended that, preferably, the shielded cable 20 is located the inside of a protective sheath 64, preferably flexible, surrounding the braid 26 at least up to the clamping ring 46. This protective sheath 64 is preferably made of a flexible material such as the elastomer and is intended to mechanically protect the braid 26 so to avoid any alteration of the shielding continuity provided between the two boxes 12 and 16 by this braid 26.

On se reportera à la figure 3 qui illustre une ferrule 30 qui est métallique et est réalisée par exemple dans un alliage Cu-Zn pouvant être revêtu d'une couche métallique minimisant la résistance électrique de contact avec le boítier 12 ou 16, de préférence une couche de nickel d'une épaisseur comprise entre 2 et 5 µm. Selon un exemple de réalisation de la ferrule 30, celle-ci possède une longueur de 9,6 mm, sa première extrémité cylindrique 34 possède un diamètre de 9,8 mm et un bourrelet 66 est disposé sur toute la périphérie de la première extrémité 34 au niveau du bord libre afin d'empêcher le glissement de la bague de serrage et la séparation entre la première extrémité 50 de la tresse 26 et la ferrule 30.Reference will be made to FIG. 3 which illustrates a ferrule 30 which is metallic and is made for example in a Cu-Zn alloy which can be coated with a metallic layer minimizing the electrical resistance of contact with the housing 12 or 16, preferably a layer of nickel of a thickness between 2 and 5 µm. According to an exemplary embodiment of the ferrule 30, this has a length of 9.6 mm, its first end cylindrical 34 has a diameter of 9.8 mm and a bead 66 is arranged over the entire periphery of the first end 34 at the free edge to prevent sliding of the clamping ring and the separation between the first end 50 of the braid 26 and the ferrule 30.

Le diamètre intérieur de la ferrule est par exemple de l'ordre 8,2 mm. Au niveau de la deuxième extrémité 36 de la ferrule 30, on trouve la nervure annulaire de révolution 38 possédant un profil en créneau et l'épaulement 40 délimitant le côté de la nervure annulaire de révolution 38 tournée vers le bord libre de la deuxième extrémité 36 de la ferrule 30. Cet épaulement 40 comporte la surface de contact 42 et la surface cylindrique de révolution 43. De façon préférentielle, le diamètre de la surface 43 est égal au diamètre de l'ouverture circulaire 28 du boítier 12, par exemple de l'ordre de 10 mm. Le bord libre de la deuxième extrémité 36 de la ferrule 30 comporte une deuxième nervure annulaire de révolution 62 présentant une section transversale en forme de créneau. Le changement de diamètre entre cette nervure 62 et la surface périphérique annulaire cylindrique 68 de la deuxième extrémité 36 de la ferrule 30, qui est contiguë à cette deuxième nervure 62, forme un épaulement de butée 70 destiné à retenir le contour intérieur 58 de l'anneau de maintien élastique 54.The internal diameter of the ferrule is for example of the order of 8.2 mm. At the second end 36 of the ferrule 30, there is the rib annular of revolution 38 having a crenellated profile and the shoulder 40 delimiting the side of the annular rib of revolution 38 facing the free edge of the second end 36 of the ferrule 30. This shoulder 40 has the contact surface 42 and the cylindrical surface of revolution 43. Preferably, the diameter of the surface 43 is equal to the diameter of the circular opening 28 of the housing 12, for example of the order of 10 mm. The free edge of the second end 36 of the ferrule 30 has a second annular rib of revolution 62 having a section cross-shaped niche. The change in diameter between this rib 62 and the cylindrical annular peripheral surface 68 of the second end 36 of the ferrule 30, which is contiguous to this second rib 62, forms an abutment shoulder 70 intended to retain the contour inside 58 of the elastic retaining ring 54.

Sur la ferrule de la figure 3, il est prévu que le diamètre extérieur de la deuxième nervure 62 soit égal au diamètre extérieur de la surface 43 (10 mm) de sorte qu'il existe un épaulement 72 entre la surface 68 et la surface 43.On the ferrule of Figure 3, it is expected that the outside diameter of the second rib 62 is equal to the outside diameter of the surface 43 (10 mm) so that there is a shoulder 72 between the surface 68 and the surface 43.

Le changement de diamètre au niveau des épaulements 70 et 72, c'est-à-dire la différence de diamètre entre les surfaces 43 et 68, est par exemple de l'ordre de 1 mm.The change in diameter at the shoulders 70 and 72, that is to say the difference in diameter between the surfaces 43 and 68, is by example of the order of 1 mm.

Pour permettre un ajustement serré lors du montage de l'anneau de maintien élastique 54, il est prévu que, de préférence, la distance séparant la nervure annulaire 38 des moyens de butée constitués par la nervure 62 est sensiblement égale à la somme de l'épaisseur de la paroi de la zone annulaire 44 du boítier de protection et de blindage 12 autour de l'ouverture 28 et de la distance séparant les plans comprenant respectivement le contour intérieur 58 et le contour extérieur 60 de l'anneau de maintien 54.To allow a tight fit when mounting the ring elastic support 54, it is preferably provided that the distance separating the annular rib 38 abutment means constituted by the rib 62 is substantially equal to the sum of the thickness of the wall of the annular zone 44 of the protective and shielding casing 12 around the opening 28 and the distance separating the planes including the interior contour respectively 58 and the outer contour 60 of the retaining ring 54.

Selon un exemple de réalisation, la paroi du boítier 12 possède une épaisseur de 0,3 mm égale à l'épaisseur de l'anneau constitué par la surface 43 et la largeur de la surface périphérique 68 est égale à la distance séparant les plans comprenant respectivement le contour intérieur 58 et le contour extérieur 60 de l'anneau de maintien 54, par exemple 1,3 mm.According to an exemplary embodiment, the wall of the housing 12 has a thickness of 0.3 mm equal to the thickness of the ring formed by the surface 43 and the width of the peripheral surface 68 is equal to the distance separating the plans comprising respectively the inner contour 58 and the contour outside 60 of the retaining ring 54, for example 1.3 mm.

On se reportera maintenant aux figures 4, 5A et 5B afin d'illustrer la forme des anneaux de maintien élastique 54 et 56. En vue de face (figure 4), l'anneau de maintien élastique 54 n'est pas fermé mais s'étend sur un angle au centre d'au moins 200°, de préférence d'au moins 270° et de façon encore plus préférentielle entre 290 et 320°.We will now refer to FIGS. 4, 5A and 5B in order to illustrate the forms elastic retaining rings 54 and 56. In front view (FIG. 4), the elastic retaining ring 54 is not closed but extends over an angle at the center of at least 200 °, preferably at least 270 ° and again more preferable between 290 and 320 °.

Le contour extérieur présente une forme en arc de cercle. Pour une bonne élasticité de l'anneau de maintien élastique 54, le contour intérieur comporte trois tronçons d'arc de cercle 74 entre lesquels sont formés des évidements 76. On conçoit également que le contour intérieur 58 soit strictement en forme d'arc de cercle pourvu que la matière dans lequel est réalisé l'anneau de maintien élastique 54 soit suffisamment souple. Cet anneau de maintien élastique 54 peut être réalisé en matière plastique, en métal ou en tout autre matériau suffisamment élastique pour permettre d'enlever et de remettre de façon aisée l'anneau de maintien élastique 54 entre la nervure 62 et la paroi du boítier 12. De préférence, l'anneau 54 est réalisé en acier XC 75 sur lequel sont réalisés deux revêtements : un revêtement Zn10ZB (zinc bichromaté jaune) et un revêtement de finition pour tenue au brouillard salin de 400 heures avant apparition de rouille rouge.The outer contour has an arc shape. For a good elasticity of the elastic retaining ring 54, the inner contour comprises three sections of circular arc 74 between which are formed recesses 76. It is also conceivable that the interior contour 58 is strictly in the shape of a circular arc provided that the material in which is made the elastic retaining ring 54 is sufficiently flexible. This elastic retaining ring 54 can be made of plastic, metal or any other material sufficiently elastic to allow to easily remove and replace the elastic retaining ring 54 between the rib 62 and the wall of the housing 12. Preferably, the ring 54 is made of XC 75 steel on which two coatings are made: one Zn10ZB coating (yellow bichromate zinc) and a finishing coating for resistance to salt spray for 400 hours before the appearance of rust red.

Comme on peut le voir sur les sections représentées sur les figures 5A et 5B, en vue de côté l'anneau de maintien élastique 54 peut présenter des profils ayant différentes formes. Sur la figure 5A, l'anneau de maintien élastique 54 possède un profil en forme de tronc de cône et sur la figure 5B l'anneau de maintien élastique possède un profil bombé en forme de ménisque. Il est prévu que, de préférence, les anneaux de maintien élastique 54 et 56 sont identiques et présentent une épaisseur de matière constante.As can be seen in the sections shown in the figures 5A and 5B, in side view the elastic retaining ring 54 may have profiles with different shapes. In FIG. 5A, the retaining ring elastic 54 has a truncated cone-shaped profile and in FIG. 5B the elastic retaining ring has a domed profile in the form of meniscus. It is intended that, preferably, the elastic retaining rings 54 and 56 are identical and have a constant material thickness.

Lors du montage des deux boítiers 12 et 16 dans le réceptacle du projecteur d'une automobile, l'espace est très réduit et il peut être nécessaire de former un coude au niveau du raccord entre le câble blindé et au moins l'un des deux boítiers 12 et 16. Afin de protéger d'une façon générale le raccord 10 entre le câble blindé et le boítier et de maintenir le câble blindé dans une conformation particulière à proximité du boítier auquel il est raccordé, on peut utiliser un élément de protection 78 représenté sur la figure 6 dans le cas particulier de la formation d'un coude à angle droit du câble blindé 20 en sortie du boítier 12.When mounting the two boxes 12 and 16 in the receptacle of the headlamp of an automobile, space is very limited and it may be necessary to form a bend at the connection between the screened cable and at least one of the two housings 12 and 16. In order to generally protect the connection 10 between the shielded cable and the box and maintain the shielded cable in a particular conformation near the housing to which it is connected, you can use a protective element 78 shown on the Figure 6 in the particular case of the formation of a right angle bend of the shielded cable 20 at the outlet of the housing 12.

Cet élément de protection 78 est, de préférence, surmoulé à l'extérieur du boítier 12 et s'étend au moins depuis la nervure annulaire 38 de la ferrule 30 jusqu'au bord libre de la première extrémité 34 de la ferrule 30 en entourant un tronçon de la ferrule 30, la bague de serrage 46 et un tronçon de la première extrémité 50 de la tresse 26. Dans ce cas de figure qui n'est pas illustré, l'élément de protection 78 constitue un manchon sensiblement cylindrique protégeant le dispositif de raccordement dans toute la zone de la ferrule qui est située à l'extérieur du boítier 12. Il est à noter que cet élément de protection 78 n'empêche pas pour autant de démonter le dispositif de raccord, en ôtant l'anneau de maintien élastique 54 comme il sera décrit ci-après.This protective element 78 is preferably molded on the outside of the housing 12 and extends at least from the annular rib 38 of the ferrule 30 to the free edge of the first end 34 of the ferrule 30 in surrounding a section of the ferrule 30, the clamping ring 46 and a section of the first end 50 of the braid 26. In this case which is not not illustrated, the protective element 78 constitutes a sleeve substantially cylindrical protecting the connection device throughout the area of the ferrule which is located outside the housing 12. It should be noted that this element protection 78 does not prevent the device from being dismantled fitting, by removing the elastic retaining ring 54 as will be described below.

Lorsqu'on utilise un élément de protection 78 en même temps qu'une gaine 64, si l'encombrement à respecter est faible, la gaine 64 peut alors être plus courte. Dans le cas d'un élément de protection 78 droit, la gaine peut s'arrêter avant la première extrémité 34 de la ferrule 30 et dans le cas d'un élément de protection 78 coudé (figure 6), la gaine peut s'arrêter avant le coude tout en restant en contact avec l'élément de protection 78 sur une longueur suffisante pour assurer l'étanchéité entre ces deux éléments.When using a protection element 78 at the same time as a sheath 64, if the space to be respected is small, the sheath 64 can then be shorter. In the case of a 78 right protection element, the sheath can stop before the first end 34 of the ferrule 30 and in the case of a protection element 78 bent (figure 6), the sheath can stop before elbow while remaining in contact with the protective element 78 on a sufficient length to ensure sealing between these two elements.

Dans la situation illustrée à la figure 6, l'élément de protection 78 se prolonge en outre autour d'un tronçon 80 du câble blindé 20 qui est adjacent à la première extrémité 34 de la ferrule 30, ce tronçon 80 formant un angle α non nul avec l'axe de révolution X de la ferrule 30.In the situation illustrated in FIG. 6, the protective element 78 is further extends around a section 80 of the shielded cable 20 which is adjacent at the first end 34 of the ferrule 30, this section 80 forming an angle α not zero with the axis of revolution X of the ferrule 30.

Dans le cas particulier de la figure 6, le tronçon 80 est rectiligne selon une direction Y formant un angle α de 90° avec l'axe X qui est l'axe de révolution de la ferrule 30. Ainsi, dans le cas de la figure 6, l'élément de protection surmoulé 78 forme un manchon en L, notamment au niveau de sa partie creuse entourant le dispositif de raccord 10 et le tronçon 80. De façon préférentielle, l'élément de protection surmoulé 78 possède une épaisseur plus ou moins constante de l'ordre d'au moins 1 mm et peut être réalisé dans toute matière plastique pouvant être surmoulée. In the particular case of FIG. 6, the section 80 is rectilinear according to a direction Y forming an angle α of 90 ° with the axis X which is the axis of revolution of the ferrule 30. Thus, in the case of FIG. 6, the element of overmolded protection 78 forms an L-shaped sleeve, in particular at its hollow part surrounding the connection device 10 and the section 80. So preferential, the molded protection element 78 has a thickness more or less constant of the order of at least 1 mm and can be produced in any plastic that can be molded.

Si l'on se reporte à nouveau à la figure 1, la longueur L correspondant à la longueur du câble blindé 20 séparant les deux boítiers 12 et 16 est de l'ordre de 150 à 300 mm. Afin de garantir une impédance de transfert acceptable, il peut être nécessaire d'ajouter une deuxième tresse de blindage sur la première tresse de blindage 26, surtout lorsque la longueur L est trop importante et notamment lorsque L est supérieure à 250 mm.If we refer again to Figure 1, the corresponding length L the length of the shielded cable 20 separating the two boxes 12 and 16 is in the range of 150 to 300 mm. In order to guarantee a transfer impedance acceptable, it may be necessary to add a second shielding braid on the first shielding braid 26, especially when the length L is too important and especially when L is greater than 250 mm.

Nous allons maintenant décrire le procédé à mettre en oeuvre pour raccorder le blindage entre le boítier de protection de blindage 12 d'un appareil à haute tension et un câble blindé 20. Dans le cas du dispositif de raccord de blindage 10 de la figure 2, il faut tout d'abord insérer la première extrémité cylindrique 34 de la ferrule 30 entre l'extrémité 50 de la tresse 26 et les deux conducteurs 22 et 24 qui traversent la ferrule 30. On vient ensuite mettre en place la bague de serrage 46 autour de la première extrémité 50 de la tresse 26 et de la première extrémité cylindrique 34 de la ferrule 30. On réalise le contact entre la première extrémité cylindrique 34 de la ferrule 30 et l'extrémité de la tresse 20 en serrant la bague de serrage 46 afin de réaliser un contact sur 360°.We will now describe the process to be implemented for connect the shielding between the shielding protection box 12 of a high-voltage device and shielded cable 20. In the case of the shield connection 10 of Figure 2, first insert the first cylindrical end 34 of the ferrule 30 between the end 50 of the braid 26 and the two conductors 22 and 24 which cross the ferrule 30. We then come put the clamping ring 46 around the first end 50 of the braid 26 and the first cylindrical end 34 of the ferrule 30. We makes contact between the first cylindrical end 34 of the ferrule 30 and the end of the braid 20 by tightening the clamping ring 46 in order to produce 360 ° contact.

On peut ensuite placer, de façon optionnelle, la gaine 64 autour de la tresse 26 et, éventuellement, sur un tronçon de la bague 46.We can then optionally place the sheath 64 around the braid 26 and, optionally, on a section of the ring 46.

Il suffit ensuite d'insérer la deuxième extrémité 36 de la ferrule 30 dans l'ouverture circulaire 28 du boítier 12 jusqu'à ce que la nervure annulaire de révolution 38 rentre en contact avec la surface extérieure de la paroi du boítier 12. Afin de fixer l'ensemble et de maintenir un contact sur 360° entre le boítier 12 et la ferrule 30, on met en place l'anneau de maintien élastique 54 entre la nervure 62 et la paroi interne du boítier 12.Then simply insert the second end 36 of the ferrule 30 in the circular opening 28 of the housing 12 until the rib annular of revolution 38 comes into contact with the outer surface of the wall of the housing 12. In order to fix the assembly and maintain contact on 360 ° between the housing 12 and the ferrule 30, we put in place the retaining ring elastic 54 between the rib 62 and the internal wall of the housing 12.

On comprend donc qu'il est possible, simplement en retirant l'anneau de maintien élastique 54, d'ouvrir le raccord de blindage entre le câble blindé 20 et le boítier 12, si l'on souhaite par exemple changer la lampe à décharge défectueuse et raccorder le câble blindé 20 sur un autre boítier de protection de blindage d'une nouvelle lampe à décharge.We therefore understand that it is possible, simply by removing the ring retainer 54, open the shield connection between the cable shielded 20 and the housing 12, if one wishes for example to change the lamp to defective discharge and connect the shielded cable 20 to another box shielding protection of a new discharge lamp.

Une caractéristique essentielle de l'invention est que le dispositif de raccord de blindage permet d'effectuer une rotation sur 360° du raccord de blindage en faisant tourner la ferrule 30 dans l'ouverture 28 du boítier. Ainsi, dans le cas où le dispositif de raccord de blindage comprend un élément de protection 78 en forme de L, on peut orienter radialement le tronçon 80 du câble blindé 20 autour de l'ouverture 28 dans la direction souhaitée la plus judicieuse au sein du projecteur de façon que ce dispositif de raccord selon l'invention prenne le moins de place possible.An essential characteristic of the invention is that the device for shield connection allows a 360 ° rotation of the connection shielding by rotating the ferrule 30 in the opening 28 of the housing. So, in the case where the shield connection device comprises a protection L-shaped 78, the section 80 can be oriented radially shielded cable 20 around opening 28 in the most desired direction judicious within the projector so that this connecting device according to the invention takes up as little space as possible.

De façon alternative, l'élément de protection 78 peut être constitué de deux parties complémentaires ou coques en forme de demi-anneaux venant entourer le câble blindé 20 et se fixant l'un à l'autre grâce à des moyens de fixation complémentaires.Alternatively, the protective element 78 may consist of two complementary parts or shells in the form of half-rings coming surround the shielded cable 20 and attaching to each other by means of additional fixing.

Claims (10)

  1. Shielding connection device (10) between a protective and shielding casing (12) of a high-voltage apparatus (14) and a shielded cable (20) comprising at least two conductors (22, 24) and a tubular shielding braid (26) surrounding the said conductors, characterised by the fact that the said protective and shielding casing (12) comprises a circular opening (28) and by the fact that the said device forms a rotating, disassemblable shielding connection comprising:
    a ferrule (30) of revolution comprising a first cylindrical end (34) and a second end (36) having an annular flange of revolution (38) with a shoulder (40) turned in the direction opposite to the said first end (34) and which has a flat surface at right-angles to the axis of revolution of the said ferrule so as to form a contact surface (42) intended to come against an annular zone (44) of the external surface of the said protective and shielding casing (12) which surrounds the said opening (28), the outer diameter of the said flange (38) being greater than the diameter of the said opening (28),
    a clamping ring (46) holding a section of one end (50) of the said braid (26) in bearing contact around substantially the whole periphery of the first end (34) of the said ferrule (32), and
    an elastic retaining ring (54) in the form of an arc of circle extending through an angle at the centre of at least 200°, the said ring (46) having an inner circumference (58) and an outer circumference (60) in two different planes, the said outer circumference (60) being intended to be applied against the internal face of the said casing (12) and the said inner circumference (58) being intended to co-operate with stop means (62) firmly attached to the said second end (36) of the ferrule (30).
  2. Device as described in claim 1, characterised by the fact that it also comprises a flexible protective sheath (64) surrounding the said braid (26) at least up to the said clamping ring (46).
  3. Device as described in any one of the preceding claims, characterised by the fact that it also comprises at least one protective element (78) over-moulded on the outside of the said casing (12) and extending at least from the annular flange (38) of the ferrule (30) up to the free edge of the first end (34) of the ferrule, surrounding a section of the said ferrule (30), the said ring (46) and the said end (50) of the said braid (26).
  4. Device as described in claim 3, characterised by the fact that the said protective element (78) is also extended around a section (80) of the braid (26) which is adjacent to the first end (34) of the said ferrule (30), the said section (80) forming a non-zero angle (α) with the axis of revolution (X) of the said ferrule (30).
  5. Device as described in any one of the preceding claims, characterised by the fact that the said retaining ring (54) has a convex shape in the form of a lens.
  6. Device as described in any one of the preceding claims characterised by the fact that the said retaining ring (54) has a shape in the form of a truncated cone.
  7. Device as described in any one of the preceding claims, characterised by the fact that the said high-voltage apparatus (14) is a discharge lamp.
  8. Device as described in any one of the preceding claims, characterised by the fact that the distance separating the said annular flange (38) from the said stop means (62) is substantially equal to the sum of the thickness of the wall of the said annular zone (44) of the protective and shielding casing (12) around the opening (28) and of the distance separating the planes comprising the inner circumference (58) and the outer circumference (60) respectively of the said retaining ring (54).
  9. Device as described in any one of the preceding claims, characterised by the fact that the said stop means consist of a stop flange (62) which is annular, of revolution and adjacent to the free edge of the second end (36) of the said ferrule (30).
  10. Device (100) as described in any one of the preceding claims, characterised by the fact that it also creates the shielding connection between the said shielded cable (20) and a second protective and shielding casing (16) for a high-voltage supply (18), the said second casing (16) comprising a circular opening (28) and by the fact that the said device (100) comprises:
    a first and a second ferrule of revolution (30, 32), each of them comprising a first cylindrical end (34) and a second end (36) having an annular flange of revolution (38) with a shoulder (40) turned in the direction opposite to the said first end (34), the said shoulder having a flat surface at right-angles to the axis of revolution (X) of the said ferrule (30) or (32) so as to form a contact surface (42), the contact surface (42) of the said first ferrule (30) being intended to come against the said annular zone (44) of the external surface of the protective and shielding casing (12) of the said high-voltage apparatus (14) which surrounds the said opening (28) and the contact surface (42) of the said second ferrule (32) being intended to come against an annular zone (44) of the external surface of the second protective and shielding casing (16) which surrounds the said opening (28), the outer diameter of the said flange (38) being greater than the diameter of the said opening (28),
    a first and a second clamping ring (46, 48), the said first clamping ring (46) holding a section of the first end (50) of the said braid (26) in bearing contact around substantially the whole periphery of the first end (34) of the first ferrule (30) and the said second clamping ring (48) holding a section of the second end (52) of the said braid (26) in bearing contact around substantially the whole periphery of the first end (34) of the second ferrule (32), and
    a first and a second elastic retaining ring (54, 56) in the form of an arc of circle extending through an angle at the centre of at least 200°, the said rings (54, 56) having an inner circumference (58) and an outer circumference (60) in two different planes, the said outer circumference (60) of the first ring (54) being intended to be applied against the internal face of the said protective and shielding casing (12) of the said high-voltage apparatus (14), the said inner circumference (58) of the first ring (54) being intended to co-operate with stop means (62) firmly attached to the said second end (36) of the first ferrule (30), the said outer circumference (60) of the second ring (56) being intended to be applied against the internal face of the said second protective and shielding casing (16) and the said inner circumference (58) of the second ring (56) being intended to co-operate with stop means (62) firmly attached to the said second end (36) of the second ferrule (32).
EP98943994A 1997-09-16 1998-09-16 Device for shielding connection between an enclosing case and a shielded cable Expired - Lifetime EP1016171B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9711477 1997-09-16
FR9711477A FR2768563B1 (en) 1997-09-16 1997-09-16 ARMORED CONNECTION DEVICE BETWEEN A HOUSING AND AN ARMORED CABLE
PCT/FR1998/001975 WO1999014826A1 (en) 1997-09-16 1998-09-16 Device for shielding connection between an enclosing case and a shielded cable

Publications (2)

Publication Number Publication Date
EP1016171A1 EP1016171A1 (en) 2000-07-05
EP1016171B1 true EP1016171B1 (en) 2002-04-24

Family

ID=9511105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98943994A Expired - Lifetime EP1016171B1 (en) 1997-09-16 1998-09-16 Device for shielding connection between an enclosing case and a shielded cable

Country Status (5)

Country Link
EP (1) EP1016171B1 (en)
DE (1) DE69805088T2 (en)
ES (1) ES2175768T3 (en)
FR (1) FR2768563B1 (en)
WO (1) WO1999014826A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101600331B (en) * 2008-06-04 2012-10-03 富士康(昆山)电脑接插件有限公司 Shield

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6261108B1 (en) * 1999-04-15 2001-07-17 Harness System Technologies Research, Ltd. Shield connector
EP1128472B1 (en) * 2000-02-24 2003-06-11 Autonetworks Technologies, Ltd. Shield connector
US9559507B2 (en) * 2012-11-07 2017-01-31 Ge Aviation Systems Llc Mounting bracket assembly for an electrical cable
DE102013011874A1 (en) * 2013-07-17 2015-01-22 Leoni Bordnetz-Systeme Gmbh Electric power distributor for an electric or hybrid vehicle and distributor housing for such a power distributor
DE102013218726B3 (en) * 2013-09-18 2014-11-06 Robert Bosch Gmbh Shielding arrangement for high current applications
DE102014101579A1 (en) * 2014-02-07 2015-08-13 Huf Hülsbeck & Fürst Gmbh & Co. Kg Line connection arrangement for a vehicle component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601730B1 (en) * 1986-07-17 1988-10-21 Sogie DEVICE FOR RETAINING A CONTACT IN A MULTI-CONTACT ALVEOLAR CONNECTOR
FR2733367B1 (en) * 1995-04-19 1997-07-04 Axon Cable Sa REAR CONNECTION DEVICE FOR ELECTRICAL CONNECTOR FOR SHIELDED CABLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101600331B (en) * 2008-06-04 2012-10-03 富士康(昆山)电脑接插件有限公司 Shield

Also Published As

Publication number Publication date
FR2768563A1 (en) 1999-03-19
EP1016171A1 (en) 2000-07-05
ES2175768T3 (en) 2002-11-16
DE69805088T2 (en) 2002-10-24
DE69805088D1 (en) 2002-05-29
WO1999014826A1 (en) 1999-03-25
FR2768563B1 (en) 1999-12-03

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