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EP3155692B1 - Shielded electrical connector and production method thereof - Google Patents

Shielded electrical connector and production method thereof Download PDF

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Publication number
EP3155692B1
EP3155692B1 EP15729415.8A EP15729415A EP3155692B1 EP 3155692 B1 EP3155692 B1 EP 3155692B1 EP 15729415 A EP15729415 A EP 15729415A EP 3155692 B1 EP3155692 B1 EP 3155692B1
Authority
EP
European Patent Office
Prior art keywords
ferrule
cable
shielding
shielding braid
outer ferrule
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP15729415.8A
Other languages
German (de)
French (fr)
Other versions
EP3155692A1 (en
Inventor
Jean Fabre
Gilles Schmitt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi International Operations Luxembourg SARL
Original Assignee
Delphi International Operations Luxembourg SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi International Operations Luxembourg SARL filed Critical Delphi International Operations Luxembourg SARL
Publication of EP3155692A1 publication Critical patent/EP3155692A1/en
Application granted granted Critical
Publication of EP3155692B1 publication Critical patent/EP3155692B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5837—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable specially adapted for accommodating various sized cables
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0524—Connection to outer conductor by action of a clamping member, e.g. screw fastening means
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • 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
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • 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
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal

Definitions

  • the invention relates to the field of electro-magnetically shielded electrical connectors.
  • cables and electrical connections must be electro-magnetically shielded.
  • the shielding of cables and connectors is essential to avoid interference. It is important then to ensure a continuity of shielding in the cable bundles involved in these applications and in particular at the level of the connectors present in these bundles.
  • a shielded connector for a motor vehicle has been designed which comprises an electrically insulating inner casing with at least one cavity housing a contact electrically connected to an electric cable provided with a braiding shield. At least one electrically conductive housing shielding member and having a cable exit portion is at least partially disposed around the inner housing.
  • This type of connector although capable of satisfying the technical performance plan, may prove to be difficult to repair.
  • US 2010/151721 A1 discloses a motor vehicle shielded connector as claimed in the preamble of claim 1.
  • An object of the invention is to manufacture a shielded connector at least partially satisfying the requirements mentioned above.
  • the elasticity of the tongue makes it possible to accommodate the displacements of the cable at the output of the connector, by avoiding the mechanical breaking of the case shielding element and the breaking of the electrical continuity between the case shielding element and braid shielding.
  • This arrangement provides flexibility in the connection between the casing shield member and the cable, thereby freeing the casing shield member from excessive stresses.
  • clamping ring makes it possible to maintain the elastic tongue in contact with the shielding braid.
  • the fact that it is also removable makes the connection between the case shielding element and the shielding braid easily removable, thus offering the possibility of easier repair of the cable only, without having to replace other elements of the connector. .
  • the cable exit portion is provided with at least one resilient tongue integral with the shielding member, which extends at the portion of the bare shielding braid. It is then possible to bring back, above the portion of the stripped shielding braid, a removable clamping ring on the tongue.
  • This method makes it possible to prepare the cable and the elements making it possible to ensure continuity of shielding in the connector, on the cable only. There are no elements involved in the shielding function to be mounted in the rest of the connector.
  • the connector 1 also comprises contacts 28 electrically connected to a cable 30 (see figure 5D ).
  • the figure 2 shows more particularly how the inner and outer ferrules 22 and 24 are arranged with the case shielding elements 26.
  • the case shielding elements 26, according to this example, which are two in number, are for example made by stamping and cutting a sheet metal. metallic. They have nested with each other to form a cage extending along a longitudinal axis A, between an open end 32 towards the connection interface and an opposite end having a cable outlet portion 34.
  • This cable outlet portion 34 has a substantially tubular shape, symmetrical about the longitudinal axis A. It comprises a plurality of tongues 36 or resilient blades integral with the case shielding elements 26. For example, these tabs 36 there are ten regularly distributed around the longitudinal axis A. But, it will be noted that the tabs rests on an outer ferrule 24, without a crimping operation was performed on the case shielding elements 26 to This significantly limits the level of stress exerted on the case shielding elements 26. This also allows for manual mounting and facilitates repair operations.
  • each tongue 36 has a curved shape.
  • each tab 36 progressively deviates from the longitudinal axis A, away from the case shielding member 26 to which it is connected, to a vertex 38. Then, from this vertex 38, direction of its free end 40 is approaching again the longitudinal axis.
  • the diameter of the circle inscribed at the free ends of the tongues 36, when they are unstressed, is less than the external diameter of the outer ferrule 24.
  • the free ends 40 of the tongues 36 form contact zones which rest and exert a contact force on the outer surface 42 of the outer ferrule 24, when the latter is housed in the cable outlet portion 34.
  • the inner ferrule 22 has an outer diameter smaller than the inner diameter of the outer ferrule 24.
  • the inner ferrule 22 is placed on the cable 30, above a stripped portion 48 of the shielding braid 44.
  • the braid of The shield 44 is thus in contact with the inner face 46 of the inner ferrule 22.
  • the shielding braid 44 is also rolled up, turned over, in order to be in contact with the external surface 50 of the internal ferrule 22.
  • the outer ferrule 24 is inserted into the above the stripped portion 48 of the shielding braid 44 resting on the inner ferrule 22, on which it is crimped.
  • the outer surface 42 of the outer ferrule 24 is substantially smooth (without apparent shielding braid).
  • the free ends 40 of the tabs 36 bear on this smooth surface and make a reliable and durable electrical contact over time even if these free ends 40 are brought, during the life of the connector 1, to rub on this surface external 42 of the outer ferrule 24.
  • the configuration of the elastic tongues 36 presented above makes it possible to accommodate several diameters of cables 30, with a limited number of ferrules of different diameters.
  • an inner ferrule 22 of large diameter for example 10.1 mm internal diameter and 10.9 mm outer diameter
  • the crimping teeth 52 extending between the ferrule external 24 for example 12.3mm internal diameter and 13.1mm outer diameter
  • the spacer 20 has a tubular inner surface 54 forming a clamping ring 56.
  • the spacer 20 (and therefore its clamping ring 54) is movable along the cable 30 and can be removably positioned above the tabs 36 ( Figure 5G ).
  • the inner surface 54 of the clamping ring 56 pressing on the top 38 of the tongues 36, exerts an urging force and holding the free ends 40 of the tongues 36 in contact with the outer surface 42 of the outer ferrule 24.
  • the clamping ring 54 exerts a force on the resilient tongue 36, essentially at their apex 38, radially in the direction of the cable 30.
  • the tongues 36 are on the one hand inclined with respect to the external surface 42 of the outer ferrule 24, and on the other hand elastic, the clamping ring 54 (whose inner diameter is slightly greater than the outer diameter of the outer ferrule, but less than the diameter inscribed at the vertices 38 of the tongues 36) can relatively easily be moved on the along the cable 30, then on the tabs 36.
  • clamping ring 56 and the spacer are two separate elements.
  • the figure 5 illustrates in more detail the mounting of the portion of the connector 1 comprising the connection between the shielding elements 26 of the housing and the shielding braid 44.
  • the cover 14, the wire seal 4, the spacer 20 and the inner ferrules 22 and outer 24 on the cable 30 have been threaded (the compression half-shells 12 may be placed on the cable 30 later).
  • the inner ferrules 22 and outer 24 can take any angular position around the cable 30, which simplifies the method of mounting the connector according to the invention.
  • the clamping ring 56 and the spacer 20 on which is mounted contribute to forming a stop or surface on which the wire seal 4 can be compressed by the compression half-shells 12 and the cover 14.
  • a portion of the inner insulation of the cable 30 is then removed near one of its ends to release wires 58 of the cable 30.
  • a portion of the outer insulation 60 of the cable 30 is also removed to strip the braid armature 44 which is then rolled up on the inner ferrule 22.
  • the outer ferrule 24 can then be brought back and crimped onto the portion of the shielding braid rolled up on the internal ferrule 22 (FIG. Figure 5C ).
  • the end of the cable 30 thus prepared and shielded can be optionally stored and / or transported before being introduced into the outer casing 8 is mounted with the other elements of the connector 1.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

L'invention concerne le domaine des connecteurs électriques électro-magnétiquement blindés. Dans de nombreuses applications, et notamment par exemple dans le domaine de la connectique électrique de puissance pour véhicules automobiles électriques ou hybrides rechargeables, les câbles et connexions électriques doivent être électro-magnétiquement blindés.The invention relates to the field of electro-magnetically shielded electrical connectors. In many applications, and particularly for example in the field of electric power connections for electric motor vehicles or rechargeable hybrids, cables and electrical connections must be electro-magnetically shielded.

En effet, en raison des puissances électriques concernées dans ces applications, le blindage des câbles et des connecteurs est essentiel pour éviter les interférences. Il est important alors d'assurer une continuité de blindage dans les faisceaux de câble impliqués dans ces applications et en particulier au niveau des connecteurs présents dans ces faisceaux.Indeed, because of the electrical powers involved in these applications, the shielding of cables and connectors is essential to avoid interference. It is important then to ensure a continuity of shielding in the cable bundles involved in these applications and in particular at the level of the connectors present in these bundles.

Diverses solutions ont été développées à cette fin. Comme décrit par exemple, dans le document WO 2011/124562 A1 , un connecteur blindé pour véhicule automobile a été conçu qui comprend un boîtier interne électriquement isolant avec au moins une cavité logeant un contact relié électriquement à un câble électrique muni d'une tresse de blindage. Au moins un élément de blindage de boîtier, électriquement conducteur, et qui comporte une portion de sortie de câble, est placé au moins partiellement autour du boîtier interne. Ce type de connecteur, bien que pouvant donner satisfaction au plan des performances techniques, peut s'avérer être difficilement réparable. US 2010/151721 A1 décrit un connecteur blindé pour véhicule automobile tel que revendiqué dans le préambule de la revendication 1.Various solutions have been developed for this purpose. As described for example in the document WO 2011/124562 A1 , a shielded connector for a motor vehicle has been designed which comprises an electrically insulating inner casing with at least one cavity housing a contact electrically connected to an electric cable provided with a braiding shield. At least one electrically conductive housing shielding member and having a cable exit portion is at least partially disposed around the inner housing. This type of connector, although capable of satisfying the technical performance plan, may prove to be difficult to repair. US 2010/151721 A1 discloses a motor vehicle shielded connector as claimed in the preamble of claim 1.

On voit donc que de tels connecteurs doivent être fabriqués de manière efficace et à moindre coût, tout en satisfaisant cependant à des normes de qualité exigeantes et en permettant éventuellement une réparation du câble.It can thus be seen that such connectors must be manufactured efficiently and at a lower cost, while nevertheless satisfying demanding quality standards and possibly allowing repair of the cable.

La qualité de la liaison électrique entre la tresse de blindage d'un câble et l'élément de blindage du boîtier du connecteur monté sur celui-ci, ainsi que la robustesse de la portion de sortie de câble de cet élément de blindage, sont à cet égard particulièrement critique. En effet, le câble en sortie de connecteur peut être soumis à de fortes contraintes et vibrations.The quality of the electrical connection between the shielding braid of a cable and the shielding element of the connector housing mounted on it, as well as the robustness of the cable outlet portion of this shielding element, are this is particularly critical. Indeed, the cable output connector can be subjected to high stresses and vibrations.

Un but de l'invention est de fabriquer un connecteur blindé satisfaisant au moins partiellement les exigences mentionnées ci-dessus.An object of the invention is to manufacture a shielded connector at least partially satisfying the requirements mentioned above.

Ce but est atteint grâce à un connecteur du type indiqué ci-dessus tel que revendiqué dans la revendication 1 et dans lequel au moins une languette élastique présente une zone de contact maintenue pressée sur la tresse de blindage grâce à une bague de serrage amovible (« amovible » étant dans ce document relatif à la position sur la ou les languette(s) - autrement dit, la bague de serrage peut être retirée de sa position dans laquelle elle recouvre au moins partiellement la ou les languette(s), sans pour autant pouvoir être retirée complètement et aisément du câble).This object is achieved by means of a connector of the type indicated above as claimed in claim 1 and wherein at least one resilient tongue has a contact area maintained pressed against the shielding braid by a removable clamping ring (" in this document relating to the position on the tongue (s) - in other words, the clamping ring can be removed from its position in which it covers at least partially the tongue (s), without being able to be removed completely and easily from the cable).

Ainsi, l'élasticité de la languette permet d'accommoder les déplacements du câble en sortie de connecteur, en évitant la rupture mécanique de l'élément de blindage de boîtier et la rupture de la continuité électrique entre l'élément de blindage de boîtier et la tresse de blindage. Cette disposition donne de la souplesse à la liaison entre l'élément de blindage de boîtier et le câble, libérant ainsi l'élément de blindage de boîtier de contraintes trop importantes.Thus, the elasticity of the tongue makes it possible to accommodate the displacements of the cable at the output of the connector, by avoiding the mechanical breaking of the case shielding element and the breaking of the electrical continuity between the case shielding element and braid shielding. This arrangement provides flexibility in the connection between the casing shield member and the cable, thereby freeing the casing shield member from excessive stresses.

De plus, la bague de serrage permet de maintenir la languette élastique au contact de la tresse de blindage. Le fait qu'elle soit en outre amovible rend aisément démontable la liaison entre l'élément de blindage de boîtier et la tresse de blindage, offrant ainsi la possibilité de réparer plus facilement uniquement le câble, sans avoir à remplacer d'autres éléments du connecteur.In addition, the clamping ring makes it possible to maintain the elastic tongue in contact with the shielding braid. The fact that it is also removable makes the connection between the case shielding element and the shielding braid easily removable, thus offering the possibility of easier repair of the cable only, without having to replace other elements of the connector. .

Ce connecteur peut comporter la caractéristique suivante:

  • il comprend un joint d'étanchéité autour du câble et en contact avec la bague de serrage ; dans ce cas la bague de serrage constitue une butée ou surface sur laquelle le joint d'étanchéité peut être comprimé.
This connector may include the following feature:
  • it comprises a seal around the cable and in contact with the clamping ring; in this case the clamping ring constitutes a stop or surface on which the seal can be compressed.

Selon un autre aspect, l'invention concerne un procédé de montage d'un connecteur blindé pour véhicules automobiles tel que revendiqué dans la revendication 3, comprenant :

  • la fourniture d'un câble électrique muni d'une tresse de blindage,
  • la mise à nu d'une portion de la tresse de blindage à proximité de l'une des extrémités du câble électrique,
  • la fixation d'au moins un contact à l'extrémité du câble électrique situé au voisinage de la portion de la tresse de blindage dénudée,
  • l'insertion du contact dans un boîtier interne électriquement isolant, et
  • la mise en place d'au moins un élément de blindage de boîtier, électriquement conducteur, sur le boîtier interne, cet élément de blindage comportant une portion de sortie de câble.
In another aspect, the invention relates to a method of mounting a shielded connector for motor vehicles as claimed in claim 3, comprising:
  • the supply of an electric cable with a braided shield,
  • exposing a portion of the shielding braid near one end of the electrical cable,
  • fixing at least one contact at the end of the electrical cable located in the vicinity of the portion of the stripped shielding braid,
  • inserting the contact into an electrically insulating inner casing, and
  • placing at least one electrically conductive housing shielding member on the inner housing, said shielding member having a cable exit portion.

La portion de sortie de câble est pourvue d'au moins une languette élastique venue de matière avec l'élément de blindage, qui s'étend au niveau de la portion de la tresse de blindage dénudée. On peut alors ramener, au-dessus de la portion de la tresse de blindage dénudée, une bague de serrage amovible sur la languette.The cable exit portion is provided with at least one resilient tongue integral with the shielding member, which extends at the portion of the bare shielding braid. It is then possible to bring back, above the portion of the stripped shielding braid, a removable clamping ring on the tongue.

Ce procédé permet de préparer le câble et les éléments permettant d'assurer la continuité de blindage dans le connecteur, sur le câble seulement. Il n'y a pas d'éléments intervenant dans la fonction de blindage à monter dans le reste du connecteur.This method makes it possible to prepare the cable and the elements making it possible to ensure continuity of shielding in the connector, on the cable only. There are no elements involved in the shielding function to be mounted in the rest of the connector.

Ce procédé peut comporter en outre la caractéristique suivante:

  • un joint d'étanchéité est placé autour du câble et contre la bague de serrage.
This method may further comprise the following characteristic:
  • a seal is placed around the cable and against the clamping ring.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit ainsi que sur les dessins annexés. Sur ces dessins :

  • la figure 1 représente schématiquement en perspective une vue éclatée d'un mode de réalisation d'un connecteur conforme à l'invention ;
  • la figure 2 représente schématiquement en perspective le blindage du connecteur de la figure 1 ;
  • la figure 3 représente schématiquement en perspective et en coupe, un détail de la liaison entre un élément de blindage du connecteur et la tresse de blindage du câble ;
  • les figures 4A et 4B représentent schématiquement, pour deux diamètres différents de férule, le sertissage de la férule externe au niveau de l'extrémité dénudée du câble ; et
  • les figure 5A à 5G représentent une succession d'étapes du procédé de montage selon l'invention.
Other features and advantages of the invention will appear on reading the following detailed description and on the accompanying drawings. On these drawings:
  • the figure 1 schematically shows in perspective an exploded view of an embodiment of a connector according to the invention;
  • the figure 2 schematically represents in perspective the shielding of the connector of the figure 1 ;
  • the figure 3 schematically shows in perspective and in section, a detail of the connection between a shielding element of the connector and the shielding braid of the cable;
  • the Figures 4A and 4B schematically represent, for two different ferrule diameters, the crimping of the outer ferrule at the stripped end of the cable; and
  • the Figure 5A to 5G represent a succession of steps of the assembly method according to the invention.

Un exemple de mode de réalisation du connecteur selon l'invention est représenté sur la figure 1. Selon cet exemple, le connecteur 1 comporte :

  • un joint interfacial 2 et un joint filaire 4 tous deux en matériau élastomère,
  • un boîtier interne 6, un boîtier externe 8, un dispositif de retenue 10 du joint interfacial 2, deux demi-coquilles de compression 12, un couvercle 14, un dispositif pour s'assurer de la connexion 16 (« CPA » ou «Connection Positioning Assurance» selon l'expression anglo-saxonne), un dispositif de verrouillage secondaire 18 et une entretoise 20, tous moulés dans une matière plastique électriquement isolante,
  • une férule interne 22, une férule externe 24 et des éléments de blindage de boîtier 26, tous en métal.
An exemplary embodiment of the connector according to the invention is represented on the figure 1 . According to this example, the connector 1 comprises:
  • an interfacial seal 2 and a wire seal 4 both of elastomeric material,
  • an inner housing 6, an outer housing 8, a retainer 10 of the interfacial seal 2, two compression half-shells 12, a cover 14, a device to ensure the connection 16 ("CPA" or "Connection Positioning" Insurance "according to the English expression), a secondary locking device 18 and a spacer 20, all molded in an electrically insulating plastic material,
  • an internal ferrule 22, an outer ferrule 24 and case shielding elements 26, all made of metal.

Le connecteur 1 comporte également des contacts 28 reliés électriquement un câble 30 (voir figure 5D).The connector 1 also comprises contacts 28 electrically connected to a cable 30 (see figure 5D ).

La figure 2 montre plus particulièrement comment sont agencées les férules interne 22 et externe 24 avec les éléments de blindage de boîtier 26. Les éléments de blindage de boîtier 26, selon cet exemple au nombre de deux, sont par exemple réalisés par emboutissage et découpe d'une tôle métallique. Ils ont emboîtés l'un avec l'autre pour former une cage s'étendant le long d'un axe longitudinal A, entre une extrémité ouverte 32 vers l'interface de connexion et une extrémité opposée comportant une portion de sortie de câble 34.The figure 2 shows more particularly how the inner and outer ferrules 22 and 24 are arranged with the case shielding elements 26. The case shielding elements 26, according to this example, which are two in number, are for example made by stamping and cutting a sheet metal. metallic. They have nested with each other to form a cage extending along a longitudinal axis A, between an open end 32 towards the connection interface and an opposite end having a cable outlet portion 34.

Cette portion de sortie de câble 34 a une forme essentiellement tubulaire, symétrique autour de l'axe longitudinal A. Elle comporte une pluralité de languettes 36 ou lames élastiques venues de matière avec les éléments de blindage de boîtier 26. Par exemple, ces languettes 36 sont au nombre de dix régulièrement réparties autour de l'axe longitudinal A. Mais, on remarquera que les languettes repose sur une férule externe 24, sans qu'une opération de sertissage n'ait été réalisée sur les éléments de blindage de boîtier 26 au niveau de la portion de sortie de câble 34. Ceci limite donc nettement le niveau de stress exercé sur les éléments de blindage de boîtier 26. Ceci permet également un montage manuel et facilite les opérations de réparation.This cable outlet portion 34 has a substantially tubular shape, symmetrical about the longitudinal axis A. It comprises a plurality of tongues 36 or resilient blades integral with the case shielding elements 26. For example, these tabs 36 there are ten regularly distributed around the longitudinal axis A. But, it will be noted that the tabs rests on an outer ferrule 24, without a crimping operation was performed on the case shielding elements 26 to This significantly limits the level of stress exerted on the case shielding elements 26. This also allows for manual mounting and facilitates repair operations.

Comme représenté de manière plus détaillée sur la figure 3, chaque languette 36 a une forme incurvée. Autrement dit, chaque languette 36 s'écarte progressivement de l'axe longitudinal A, en éloignement de l'élément de blindage de boîtier 26 auquel elle est liée, jusqu'à un sommet 38. Puis, à partir de ce sommet 38, en direction de son extrémité libre 40 se rapproche à nouveau de l'axe longitudinal. Le diamètre du cercle inscrit au niveau des extrémités libres des languettes 36, lorsque celles-ci sont non contraintes, est inférieur au diamètre externe de la férule externe 24. Ainsi, les extrémités libres 40 des languettes 36 forment des zones de contacts qui reposent et exercent une force de contacts sur la surface externe 42 de la férule externe 24, lorsque cette dernière est logée dans la portion de sortie de câble 34.As shown in more detail on the figure 3 each tongue 36 has a curved shape. In other words, each tab 36 progressively deviates from the longitudinal axis A, away from the case shielding member 26 to which it is connected, to a vertex 38. Then, from this vertex 38, direction of its free end 40 is approaching again the longitudinal axis. The diameter of the circle inscribed at the free ends of the tongues 36, when they are unstressed, is less than the external diameter of the outer ferrule 24. Thus, the free ends 40 of the tongues 36 form contact zones which rest and exert a contact force on the outer surface 42 of the outer ferrule 24, when the latter is housed in the cable outlet portion 34.

La férule interne 22 a un diamètre externe inférieur au diamètre interne de la férule externe 24. Ainsi, la férule interne 22 est placée sur le câble 30, au-dessus d'une portion dénudée 48 de la tresse de blindage 44. La tresse de blindage 44 est ainsi en contact avec la face interne 46 de la férule interne 22. La tresse de blindage 44 est également retroussée, retournée, pour être en contact avec la surface externe 50 de la férule interne 22. La férule externe 24 est enfilée au-dessus de la portion dénudée 48 de la tresse de blindage 44 reposant sur la férule interne 22, sur laquelle elle est sertie. La surface externe 42 de la férule externe 24 est essentiellement lisse (sans tresse de blindage apparente). Ainsi, les extrémités libres 40 des languettes 36 viennent en appui sur cette surface lisse et réalisent un contact électrique fiable et durable dans le temps même si ces extrémités libres 40 sont amenées, au cours de la vie du connecteur 1, à frotter sur cette surface externe 42 de la férule externe 24.The inner ferrule 22 has an outer diameter smaller than the inner diameter of the outer ferrule 24. Thus, the inner ferrule 22 is placed on the cable 30, above a stripped portion 48 of the shielding braid 44. The braid of The shield 44 is thus in contact with the inner face 46 of the inner ferrule 22. The shielding braid 44 is also rolled up, turned over, in order to be in contact with the external surface 50 of the internal ferrule 22. The outer ferrule 24 is inserted into the above the stripped portion 48 of the shielding braid 44 resting on the inner ferrule 22, on which it is crimped. The outer surface 42 of the outer ferrule 24 is substantially smooth (without apparent shielding braid). Thus, the free ends 40 of the tabs 36 bear on this smooth surface and make a reliable and durable electrical contact over time even if these free ends 40 are brought, during the life of the connector 1, to rub on this surface external 42 of the outer ferrule 24.

Comme représenté sur la figure 4, la configuration des languettes 36 élastiques présentées ci-dessus, permet d'accommoder plusieurs diamètres de câbles 30, avec un nombre limité de férules de diamètres différents. Par exemple, sur la figure 4A, pour un câble de diamètre relativement gros, on peut utiliser une férule interne 22 de large diamètre (par exemple de 10,1 mm de diamètre interne et 10,9mm de diamètre externe) et les dents de sertissage 52 s'étendant entre la férule externe 24 (par exemple de 12,3mm de diamètre interne et 13,1mm de diamètre externe) et la férule interne 22 sont de relativement faible dimension d (avec par exemple d=0,7mm). Comme représenté sur la figure 4B, pour un câble de diamètre relativement faible, on peut utiliser une férule interne 22 de faible diamètre (par exemple de 8,6 mm de diamètre interne et 9,4mm de diamètre externe), tout en conservant la même férule externe 24 que pour le cas illustré par la figure 4A. Par contre, dans ce cas, les dents de sertissage 52 s'étendant entre la férule externe 24 et la férule interne 22 sont de plus grande dimension D (avec D=1,45mm). On remarque donc que lorsque que le diamètre externe du câble 30 varie, il suffit d'adapter le diamètre de la férule interne 22 sans changer celui (avant sertissage) de la férule externe 24.As shown on the figure 4 , the configuration of the elastic tongues 36 presented above, makes it possible to accommodate several diameters of cables 30, with a limited number of ferrules of different diameters. For example, on the Figure 4A for a relatively large diameter cable, an inner ferrule 22 of large diameter (for example 10.1 mm internal diameter and 10.9 mm outer diameter) can be used and the crimping teeth 52 extending between the ferrule external 24 (for example 12.3mm internal diameter and 13.1mm outer diameter) and the inner ferrule 22 are relatively small dimension d (with for example d = 0.7mm). As shown on the Figure 4B for a cable of relatively small diameter, it is possible to use an internal ferrule 22 of small diameter (for example 8.6 mm internal diameter and 9.4 mm external diameter), while retaining the same external ferrule 24 as for the case illustrated by the Figure 4A . However, in this case, the teeth of crimping 52 extending between the outer ferrule 24 and the inner ferrule 22 are of larger dimension D (with D = 1.45mm). It is therefore noted that when the outer diameter of the cable 30 varies, it is sufficient to adapt the diameter of the inner ferrule 22 without changing the one (before crimping) of the outer ferrule 24.

Comme représenté sur la figure 1, l'entretoise 20 présente une surface interne 54 tubulaire formant une bague de serrage 56. L'entretoise 20 (et donc sa bague de serrage 54) est mobile le long du câble 30 et peut être positionnée de manière amovible au-dessus des languettes 36 (Figure 5G). La surface interne 54 de la bague de serrage 56, en appuyant sur le sommet 38 des languettes 36, exerce une force pressant et maintenant les extrémités libres 40 des languettes 36 en contact avec la surface externe 42 de la férule externe 24. Autrement dit, la bague de serrage 54 exerce une force sur la languette 36 élastique, essentiellement au niveau de leur sommet 38, radialement, en direction du câble 30. Les languettes 36 étant d'une part inclinée par rapport à la surface externe 42 de la férule externe 24, et d'autre part élastiques, la bague de serrage 54 (dont le diamètre interne est légèrement supérieur au diamètre externe de la férule externe, mais inférieur au diamètre inscrit au niveau des sommets 38 des languettes 36) peut relativement aisément être déplacée le long du câble 30, puis sur les languettes 36.As shown on the figure 1 , the spacer 20 has a tubular inner surface 54 forming a clamping ring 56. The spacer 20 (and therefore its clamping ring 54) is movable along the cable 30 and can be removably positioned above the tabs 36 ( Figure 5G ). The inner surface 54 of the clamping ring 56, pressing on the top 38 of the tongues 36, exerts an urging force and holding the free ends 40 of the tongues 36 in contact with the outer surface 42 of the outer ferrule 24. In other words, the clamping ring 54 exerts a force on the resilient tongue 36, essentially at their apex 38, radially in the direction of the cable 30. The tongues 36 are on the one hand inclined with respect to the external surface 42 of the outer ferrule 24, and on the other hand elastic, the clamping ring 54 (whose inner diameter is slightly greater than the outer diameter of the outer ferrule, but less than the diameter inscribed at the vertices 38 of the tongues 36) can relatively easily be moved on the along the cable 30, then on the tabs 36.

Selon, une variante, la bague de serrage 56 et l'entretoise sont deux éléments séparés.According to a variant, the clamping ring 56 and the spacer are two separate elements.

La figure 5 illustre de manière plus détaillée le montage de la partie du connecteur 1 comprenant la liaison entre les éléments de blindage 26 de boîtier et la tresse de blindage 44. Ainsi, sur la figure 5A, on a enfilé le couvercle 14, le joint filaire 4, l'entretoise 20 et les férules interne 22 et externe 24 sur le câble 30 (les demi-coquilles de compression 12 peuvent être placées sur le câble 30 ultérieurement). On notera que les férules interne 22 et externe 24 peuvent prendre n'importe quelle position angulaire autour du câble 30, ce qui simplifie le procédé de montage du connecteur selon l'invention.The figure 5 illustrates in more detail the mounting of the portion of the connector 1 comprising the connection between the shielding elements 26 of the housing and the shielding braid 44. Thus, on the Figure 5A , the cover 14, the wire seal 4, the spacer 20 and the inner ferrules 22 and outer 24 on the cable 30 have been threaded (the compression half-shells 12 may be placed on the cable 30 later). It will be noted that the inner ferrules 22 and outer 24 can take any angular position around the cable 30, which simplifies the method of mounting the connector according to the invention.

On remarque que la bague de serrage 56 et l'entretoise 20 sur laquelle est montée contribuent à former une butée ou surface sur laquelle le joint filaire 4 peut être comprimé par les demi-coquilles de compression 12 et le couvercle 14.Comme représenté sur la figure 5B, une portion de l'isolant interne du câble 30 est ensuite retirée à proximité de l'une de ses extrémités pour dégager des fils 58 du câble 30. Une portion de l'isolant externe 60 du câble 30 est également retirée pour dénuder la tresse de blindage 44 qui est ensuite retroussée sur la férule interne 22. La férule externe 24 peut alors être ramenée et sertie sur la portion de la tresse de blindage retroussé sur la férule interne 22 (figure 5C). Des contacts 28 sont ensuite sertis sur les extrémités, précédemment dégagées et dénudées, des fils 58 du câble 30 (figure 5D). Ces contacts 28 sont insérés dans le boîtier interne 6 (figure 5E). Les deux éléments de blindage 26 de boîtier sont ramenés sur le boîtier interne 6 (figure 5F). Les languettes 36 viennent recouvrir la férule externe 24. La flexibilité des languettes permet d'optimiser les performances à la tenue en vibration sans dégrader les performances de blindage. Par exemple, on peut atteindre des niveaux de vibrations de 42G sinus, soit sensiblement 17G RMS, au lieu des 25 G sinus des connecteurs blindés existants de ce type. On notera que les éléments de blindage 26 et leurs languettes 36 ne sont pas sertis sur la férule externe, ce qui rend possibles des opérations de démontage et de réparation. Les deux éléments de blindage 26 sont emboîtés l'un dans l'autre et la bague de serrage 56 de l'entretoise 20 est ramenée sur les languettes 36 (figure 5G).Note that the clamping ring 56 and the spacer 20 on which is mounted contribute to forming a stop or surface on which the wire seal 4 can be compressed by the compression half-shells 12 and the cover 14. As shown in FIG. Figure 5B , a portion of the inner insulation of the cable 30 is then removed near one of its ends to release wires 58 of the cable 30. A portion of the outer insulation 60 of the cable 30 is also removed to strip the braid armature 44 which is then rolled up on the inner ferrule 22. The outer ferrule 24 can then be brought back and crimped onto the portion of the shielding braid rolled up on the internal ferrule 22 (FIG. Figure 5C ). Contacts 28 are then crimped on the ends, previously cleared and stripped, son 58 of the cable 30 ( figure 5D ). These contacts 28 are inserted into the inner casing 6 ( figure 5E ). The two housing shielding elements 26 are brought back to the inner housing 6 ( figure 5F ). The tabs 36 come to cover the outer ferrule 24. The flexibility of the tabs optimizes the performance of the vibration resistance without degrading the shielding performance. For example, one can reach vibration levels of 42G sine, that is substantially 17G RMS, instead of the 25 G sine existing shielded connectors of this type. It will be noted that the shielding elements 26 and their tongues 36 are not crimped on the outer ferrule, which makes dismantling and repair operations possible. The two shielding elements 26 are nested one inside the other and the clamping ring 56 of the spacer 20 is brought back onto the tongues 36 (FIG. figure 5G ).

L'extrémité du câble 30 ainsi préparée et blindée peut être éventuellement stockée et/ou transportée avant d'être introduite dans le boîtier externe 8 est montée avec les autres éléments du connecteur 1.The end of the cable 30 thus prepared and shielded can be optionally stored and / or transported before being introduced into the outer casing 8 is mounted with the other elements of the connector 1.

Claims (4)

  1. Shielded connector for a motor vehicle, comprising:
    - an electrically insulating inner casing (6) with at least one cavity accommodating a contact (28) electrically connected to an electrical cable (30) provided with a shielding braid (44),
    - at least one casing shielding element (26), which is electrically conductive, placed at least partially around the inner casing (6) and comprising a cable outlet portion (34),
    - furthermore an inner ferrule (22) placed around a stripped portion (48) of the shielding braid (44) and over which the shielding braid (44) is folded,
    wherein the cable outlet portion (34) is provided with at least one resilient tab (36) integral with the shielding element (26) and in electrical continuity with the shielding braid (44), and in that it comprises a removable clamping ring (56) exerting a force onto the resilient tab (36) in the direction of the cable, wherein the connector also comprises an outer ferrule (24) crimped to the stripped portion (48) of the shielding braid (44) and against which the resilient tab (36) is pressed by the clamping ring (56), wherein the diameter of the circle described at the free ends (40) of the resilient tabs (36) is smaller than the outer diameter of the outer ferrule (24),
    characterized in that the free ends (40) of the resilient tabs (36) form contact zones which rest on and exert a contact force onto an outer surface (42) of the outer ferrule (24) when this is accommodated in the cable outlet portion (34), wherein an outer surface (42) of the outer ferrule (24) is smooth and free ends (40) of the tabs (36) come to rest on this smooth surface, wherein the outer ferrule (24) comprises crimping teeth (52) extending between the outer ferrule (24) and the inner ferrule (22),
    wherein the crimping teeth (52) are smaller than the diameter of the inner ferrule (22).
  2. Connector according to Claim 1, comprising a seal (4) around the cable (30) and in contact with the clamping ring (56).
  3. Method for assembling a shielded connector (1) for motor vehicles, comprising the following steps:
    - providing an electrical cable (30) provided with a shielding braid (44),
    - stripping a portion of the shielding braid (44) in the proximity of one of the ends of the electrical cable (30),
    - fixing at least one contact (28) at the end of the electrical cable (30) located in the vicinity of the stripped portion of the shielding braid (48),
    - inserting the contact (28) into an electrically insulating inner casing (6), and
    - placing at least one casing shielding element (26), which is electrically conductive, on the inner casing (6), this shielding element (26) comprising a cable outlet portion (34),
    wherein an outer ferrule (24) is crimped to the cable (30) at the portion of the stripped shielding braid (48), and the clamping ring (56) presses the tab (36) against the outer ferrule (24),
    wherein an inner ferrule (22) is placed on the cable (30) over the portion of the stripped shielding braid (48), the shielding braid (44) is folded over the inner ferrule (22), and the outer ferrule (24) is crimped to the inner ferrule (22),
    wherein the cable outlet portion (34) is provided with at least one resilient tab (36) integral with the shielding element (26), wherein the diameter of the circle described at the free ends (40) of the resilient tabs (36) is smaller than the outer diameter of the outer ferrule (24), said tab extending in line with the portion of the stripped shielding braid (48), and in that a clamping ring (56), which can be removed from the tab (36), is returned above the portion of the stripped shielding braid (48),
    characterized in that the free ends (40) of the resilient tabs (36) form contact zones which rest on and exert a contact force onto an outer surface (42) of the outer ferrule (24) when this is accommodated in the cable outlet portion (34), wherein an outer surface (42) of the outer ferrule (24) is smooth and free ends (40) of the tabs (36) come to rest on this smooth surface,
    wherein the outer ferrule (24) comprises crimping teeth (52) extending between the outer ferrule (24) and the inner ferrule (22),
    wherein the crimping teeth (52) are smaller than the diameter of the inner ferrule (22),
    the tabs thus resting on an outer ferrule (24), without any crimping operation having been performed on the casing shielding elements (26) at the cable outlet portion (34).
  4. Method according to Claims 3, wherein a seal (4) is placed around the cable (30) and against the clamping ring (56).
EP15729415.8A 2014-06-12 2015-06-10 Shielded electrical connector and production method thereof Not-in-force EP3155692B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1455366A FR3022410B1 (en) 2014-06-12 2014-06-12 SHIELDED ELECTRICAL CONNECTOR AND METHOD FOR MANUFACTURING THE SAME
PCT/EP2015/062970 WO2015189289A1 (en) 2014-06-12 2015-06-10 Shielded electrical connector and production method thereof

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EP3155692A1 EP3155692A1 (en) 2017-04-19
EP3155692B1 true EP3155692B1 (en) 2018-08-22

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US (1) US9793656B2 (en)
EP (1) EP3155692B1 (en)
KR (1) KR102370175B1 (en)
CN (1) CN106463850B (en)
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WO (1) WO2015189289A1 (en)

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FR3022410B1 (en) 2014-06-12 2016-05-27 Delphi Int Operations Luxembourg Sarl SHIELDED ELECTRICAL CONNECTOR AND METHOD FOR MANUFACTURING THE SAME
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CN113783041B (en) * 2021-09-08 2023-10-27 中国电子科技集团公司第十四研究所 Miniaturized power shielding connector
US12322909B2 (en) * 2022-03-30 2025-06-03 Te Connectivity Solutions Gmbh Angled subassembly for an angled connector
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Publication number Publication date
US9793656B2 (en) 2017-10-17
FR3022410B1 (en) 2016-05-27
WO2015189289A1 (en) 2015-12-17
FR3022410A1 (en) 2015-12-18
CN106463850B (en) 2018-09-11
KR102370175B1 (en) 2022-03-04
US20170187150A1 (en) 2017-06-29
KR20170013392A (en) 2017-02-06
EP3155692A1 (en) 2017-04-19
CN106463850A (en) 2017-02-22

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