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
  • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
• • 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
  • H01R13/648—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
  • H01R13/6596—Specific features or arrangements of connection of shield to conductive members the conductive member being a metal grounding panel
• • 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
  • H01R9/0527—Connection to outer conductor by action of a resilient member, e.g. spring
• • 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
  • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
• • 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
  • H01R13/748—Means for mounting coupling parts in openings of a panel using one or more screws

Definitions

• the invention relates to the field of electrical connectors, for example electrical power connectors and, in particular, electric power connectors for electric or hybrid motor vehicles.
• Power electrical connectors are used in electric or hybrid motor vehicles for example to interconnect a battery pack to an electric motor, a power converter, etc.
• the electrical currents transmitted by the cables and connectors of the electrical power circuits are relatively high and can reach 600 amperes, or 1500 amperes in current peaks. Electrical power routed through electrical cables and connectors is therefore likely to generate electromagnetic disturbances. It is therefore important to be able to minimize these electromagnetic disturbances. To this end, a shield is used at the cables as well as at the connectors.
• An object of the invention is to provide a simple and economical shield to manufacture and mount in a connector.
• a shielding retaining ring designed for a set of connectors comprising a connector, a counter-connector and a shielding wall.
• the connector is intended to be mounted on the shielding wall.
• the shielding wall corresponds for example to an electrically conductive wall of a housing inside which the counter-connector is mounted.
• the connector comprises a sleeve of electrically insulating material. At least one first contact is housed in this sleeve. It is attached, for example by crimping or welding, to the end of a cable. This cable is also provided with a shielding sheath formed for example of a flexible conductive braid.
• the counter-connector comprises at least one second contact intended to be connected to the first contact.
• the shielding retaining ring then comprises an internal portion, located inside the sleeve and electrically in connection with the shielding sheath of the cable, and an outer portion located outside the sleeve, integral with the inner portion. , and electrically in connection with the shielding wall.
• the shielding retaining ring consists of a single element which ensures the electrical continuity, and therefore the continuity of shielding, between the shielding sheath of the cable and the case.
• At least one of the inner and outer portions of the shielding retaining ring may comprise at least one resilient tongue to optimize electrical conduction on the cable shielding sheath and / or on the shielding wall.
• waterproofness is required.
• the connector may then comprise a support of electrically insulating material extending radially around and outside the sleeve, for example substantially perpendicular to the longitudinal axis of the sleeve.
• This support is attached to the shielding wall and thus makes it possible to fix the connector on the housing in which the counter-connector is mounted.
• An interfacial seal is disposed between the support and the shield wall, around the sleeve and the outer portion of the shielding retaining ring.
• a wire seal is also disposed around the cable, inside the sleeve and on the other side of the first contact with respect to the inner portion of the shielding retaining ring. In this way the seal between the connector and the housing is ensured, while maintaining the shielding retaining ring in a sealed area.
• FIG 1 is a diagrammatic perspective view of an exemplary embodiment of a set of connectors according to the invention.
• FIG. 2 diagrammatically shows in perspective and in longitudinal section the set of connectors of FIG. 1, without its protective cover;
• FIG. 3 diagrammatically shows in perspective and in longitudinal section a set of connectors according to the invention and a cable intended to be inserted into it;
• Figure 4 shows schematically in perspective and in longitudinal section the connector assembly of Figures 1 and 2, with its protective cover.
• FIG. 1 An example of a set of connectors is shown in FIG. 1.
• This example corresponds to a connector 100 mounted on the shielding wall 200.
• This shielding wall 200 corresponds to a wall of a power device such as a power converter or electric motor.
• a counter connector 300 here in the form of a bus bar partially shown, is mounted in the power device. It comprises one or more contacts 310, in the case presented here, male contacts.
• the connector 100 comprises a support 110 in the form of a plate extending substantially perpendicular to the longitudinal axis of a plurality of sleeves 120 (here three in number) and radial around and outside of them.
• the support 110 and the sleeves 120 constitute a single piece molded in electrically insulating plastic material.
• the support 110 has holes 112 (here for example four) through for the passage of screws 114 ensuring the attachment of the connector 100 on the shield wall 200 (see Figure 3). These holes 112 are reinforced by cylindrical metal inserts.
• Each sleeve 120 has an inner surface 124 and an outer surface 125 (see FIG. 2). It also comprises a portion intended to be introduced into the power device on which the connector 100 is mounted, through the shielding wall 200, as well as a portion intended to remain outside this device.
• Each sleeve 120 receives an electrical contact 122. In the example chosen and shown in FIG. 3, this electrical contact 122 is a female contact. It is crimped at the stripped end of the core 402 of a cable 400 which furthermore comprises an internal sheath 404 isolating the core 402 from a shielding sheath 406 and an insulating outer sheath 408 encapsulating itself. the shielding sheath 406.
• the cable 400 is for example a shielded cable of 16 mm 2 section.
• the shielding sheath 406 is itself stripped on a portion to be slipped and crimped between an outer ferrule 410 and an inner ferrule 411, in order to press the shielding sheath 406 between two rigid elements and thus to ensure electrical conduction and therefore also an optimal continuity of shielding.
• the shielding sheath 406 Upstream of the crimping zone on the bare core 402, the shielding sheath 406 itself is stripped on a portion which receives an electrically conductive ferrule 410.
• the cable 400 receives a unitary elastic gasket 412 of elastomer comprising, on the one hand, an inner surface 414 sealing the outer sheath 408 insulating the cable 400 and, on the other hand, an outer surface 416 provided with lips intended to abut and in contact with a section of the sleeve 120 and thus sealing with the inner surface of the sleeve 120 (see FIG. 2).
• a retaining ring 500 inserted on the cable 400, is inserted and clipped. in the opening of a sleeve 120 for the insertion of the cable 400, in order to retain the unitary wire seal 412 in this sleeve 120.
• Each sleeve 120 also receives a shielding retaining ring 600 of electrically conductive material (see FIG. 4).
• Each shielding retaining ring 600 consists of a section of metal ribbon wound around a longitudinal axis parallel to that of the sleeve 120 in which it is mounted. This is a single piece having an inner portion 602 and an outer portion 604 integral with the inner portion 602. The cutting of a section of a ribbon from a metal sheet and shaping by winding this section are therefore particularly easy and inexpensive compared in particular to stamping processes or deep forming.
• the inner portion 602 of the shielding retaining ring 600 is located inside the sleeve 120, in the part of the latter intended to remain outside the device on which the connector 100 is mounted.
• the shielding retaining ring 602 is supported on a section of the inner surface 124 of the sleeve 120, distinct from the section of the inner surface 124 of the sleeve 120 in contact with the unitary wire seal 412.
• the shielding resistor 600 is electrically connected to the shielding sheath 406 via internal resilient tongues 606 extending inwardly of the wound metal ribbon section and resting themselves on the ferrule 410 to provide a electrical contact with it.
• the outer portion 604 of the shielding retaining ring 600 is located outside of the sleeve 120 and is electrically connected, via external resilient tongues 608, to the shield wall 200.
• the internal resilient tongues 606 are oriented in order to facilitate the insertion of the contact 122 and the ferrule 410 through the shielding retaining ring 600. For example, they extend between a fixed end located on the side of the opening of the sleeve 120 intended for the insertion of the cable 400 and a free end located on the side of the sleeve 120 facing the counter-connector 300.
• the outer elastic tongues 608 are oriented to facilitate the insertion of the connector 100 which is provided through an opening in the wall For example, they extend between a fixed end located on the side of the sleeve 120 facing the counter-connector 300, towards a free end oriented e on the side of the opening of the sleeve 120 for the insertion of the cable 400.
• the outer portion 604 of the shielding retaining ring 600 extends from one edge of the wound metal tape section and passes through one or more openings 126 in the wall 128 of the sleeve 120.
• An interfacial seal 116 is disposed in a groove of the support 110, protruding outside thereof, between the support 110 and the shield wall 200, around one or more sleeves (s) and the outer portion 604. This interfacial seal 116 thus ensures that the seal 100 between the connector 100 and the shielding wall 200 is closed.
• Such an interfacial seal 116 may, for example, guarantee a seal under an overpressure of a bar when salt spray tests for 1600 hours.
• the ring 600 is located in a sealed zone between the wired unitary seal 412 and the interfacial seal 116.
• a cover 700 is clipped onto the support 110 to guide the cables 400 to the output of the connector 100 and to avoid direct exposure of the wired unitary joints 412 to liquid projections.
• a connector 100 which can be mounted at the end of cables 400 so as to be supplied, ready for assembly, to a customer.
• the shielding wall 200 corresponds to a wall of a device incorporating the counter-connector 300, but the shielding wall 200, in a variant, could be a wall of the counter-connector 300. or even more directly a shield of this counter-connector 300 in the form of sheet or braid. In this case, it is not possible to provide a shielding wall 200 between the connector 100 and the counter-connector 300.
• the connector 100 may be used as a wire-pass, the cable passing through the shielding wall 200 on which the retaining ring the shield 100 600 comes into electrical contact, but the connector 100, used as pass f ⁇ l, does not necessarily include contact 122, the end of the cable 400, which can be directly crimped or welded to a bus bar or other device.

Landscapes

• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Connector Housings Or Holding Contact Members (AREA)
• Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=50137799

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Family Cites Families (16)

• 2013
  • 2013-11-12 FR FR1361008A patent/FR3013157B1/fr active Active
• 2014
  • 2014-11-06 US US15/031,874 patent/US10103496B2/en active Active
  • 2014-11-06 WO PCT/EP2014/073948 patent/WO2015071171A1/fr not_active Ceased
  • 2014-11-06 CN CN201480061544.7A patent/CN105814742A/zh active Pending
  • 2014-11-06 EP EP14809600.1A patent/EP3069413B1/de active Active

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