EP2489103A2 - Dispositif d'étanchéité pour câble blindé individuellement, et ensemble de câble correspondant - Google Patents

Dispositif d'étanchéité pour câble blindé individuellement, et ensemble de câble correspondant

Info

Publication number
EP2489103A2
EP2489103A2 EP10766033A EP10766033A EP2489103A2 EP 2489103 A2 EP2489103 A2 EP 2489103A2 EP 10766033 A EP10766033 A EP 10766033A EP 10766033 A EP10766033 A EP 10766033A EP 2489103 A2 EP2489103 A2 EP 2489103A2
Authority
EP
European Patent Office
Prior art keywords
insulating layer
cable
electrically
individual
braid
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.)
Withdrawn
Application number
EP10766033A
Other languages
German (de)
English (en)
Inventor
Erwan Guillanton
Jean Pierre Jarnoux
Claude Casses
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.)
Aptiv Technologies Ltd
Original Assignee
FCI Automotive Holding SAS
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 FCI Automotive Holding SAS filed Critical FCI Automotive Holding SAS
Publication of EP2489103A2 publication Critical patent/EP2489103A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings
    • 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]
    • H01R13/6581—Shield structure
    • H01R13/6582—Shield structure with resilient means for engaging mating connector
    • H01R13/6583—Shield structure with resilient means for engaging mating connector with separate conductive resilient members between mating shield members
    • H01R13/6584—Shield structure with resilient means for engaging mating connector with separate conductive resilient members between mating shield members formed by conductive elastomeric members, e.g. flat gaskets or O-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
    • H01R13/648—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
    • 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
    • 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
    • H01R13/65912—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable
    • H01R13/65918—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable wherein each conductor is individually surrounded by shield

Definitions

  • the present invention is relative to electromagnetically shielded connector assembly.
  • the invention is relative to humidity protection sealing devices and method for such cable/connector connection.
  • electrical network used in the car industry may comprise some low power electrical cables used for sensor signal or passenger compartment lights.
  • the invention is more particularly directed towards the on-board power cables which traditionally carry direct current between the battery of the accumulator and the starter engine.
  • the humidity protection while crossing a compartment panel is provided on a unitary basis for each separated power cable.
  • a traditional circular cable seal is considered as easy to install. It is a safe technology to provide humidity barrier between a cable and a panel. Circular cable seal installation is well under control by car manufacturer people.
  • the power of the electric engine could be 50 kW or more. Therefore, the wires of the electric power cables could have a cross section of 40 to 50 mm 2 and the lay could reach 200A under 400 Volts. Additionally, such an electrical power is now generated by electronic converters.
  • the power cables carry high frequency current superposed to the power current. Therefore, EMI shielding comes to be necessary for the power cables in order to limit electromagnetic interference with other electrical and/or electronic elements.
  • EMI protection provided by individually shielded cable is much more efficient than a collective braid around a multiple cable. For thermal reasons, it is also better to separate the different wires of a power link. Additionally, the humidity barrier, when the power link needs to go across a compartment panel, is easier to achieve with separate circular seals. For all these reasons, individually shielded cables are preferred for today hybrid or electric vehicles.
  • high electrical power cables may be individually shielded.
  • a cable comprises an electrical core, a core insulating layer, a shielding braid and an external insulating layer.
  • the connector technology to connect two series of individually shielded cables could use individually shielded termini. However, the cost and the volume for this terminus and for such a connector would be very high .
  • a cost effective shielding electrical connector assembly may use a collective screen like metallic shells surrounding a multi terminal housing.
  • the cable connected to that connector is a multiple conductor cable collectively shielded by a unique braid surrounding all the insulated conductors of the cable. That unique cable braid is connected to the metallic cover shells.
  • This connector technology, with a collective EMI shielding is more compact and more cost effective than a connector with individually shielded terminus.
  • this document does not provide any teaching to ensure shielding continuity against electromagnetic interferences (EMI) from several individually shielded cables to a multiple cable connector with a collective screen. Additionally, no solution is provided to ensure continuity of the protection against humidity.
  • EMI electromagnetic interferences
  • the US patent 5,611,706 describes a waterproof plug.
  • a rubber joint surrounds the end portion of an insulating layer of a particular electrical wire.
  • the rubber joint comprises inner and outer lips and provides a humidity barrier between the terminal chamber bloc and the individual insulating layer.
  • An object of the invention is to provide a sealing device for individually shielded cables, a cable assembly and the corresponding connector assembly and method that remedy to at least one of the above needs or drawbacks .
  • the invention aims at making humidity sealing requirements easier to achieve for individually shielded cable connection.
  • the invention provides a sealing device.
  • the sealing device for an individually shielded cable comprises a continuous electrically-conducting shield, adapted to be electrically connected both
  • the device further comprises a continuous waterproof barrier adapted to provide a continuous humidity seal from an outer sealing layer of each of said at least one cable, to said connector body.
  • Fig. 1 is a longitudinal section of a connector assembly according to a first embodiment
  • Fig. 2 is a cross-section according to plan II-II of figure 1 ;
  • Fig. 3 is a cross-section according to plan III- III of figure 1 ;
  • Fig. 4 is a cross-section according to plan IV-IV of figure 1 ;
  • Fig. 5 is a cross-section according to plan V-V of the figure 1 ;
  • Figure 6 is a cross-section according to plan VI- VI of the figure 1 ;
  • Figure 7 illustrates a variant of the first embodiment and shows the paths of EMI shielding and of humidity protection
  • Figure 8 is a longitudinal section of a part of a connector assembly according to a second embodiment
  • Figures 9a, 9b, 9c illustrate a sealing element according to a third embodiment
  • Figure 10 illustrates a sealing element according to a fourth embodiment
  • Figure 11 is a perspective view of fifth embodiment ;
  • Figure 12 is a cross-section of an individual sealing element of the fifth embodiment
  • FIGs 13 and 14 illustrate two steps for mounting the sealing element of Figure 12,
  • Figure 15 is a longitudinal section of the cable assembly of the fifth embodiment
  • FIG. 16 is a side view of the cable assembly of the fifth embodiment
  • Figure 17 and 18 are cross sections according to planes XVII and XVIII of Figure 15,
  • Figure 19 is a perspective view of a sixth embodiment showing the outside of a first half sealing device
  • Figure 20 is a perspective view of the sixth embodiment showing the inside of a second half of sealing device
  • FIG. 21 is a longitudinal section of the half sealing device in Figure 19,
  • Figure 22 is a perspective view of a single block conductor for the first half sealing device of Figure 19,
  • FIG. 23 is a partial longitudinal section of a cable assembly using the sixth embodiment.
  • Figure 24 is a cross section of the cable assembly according to plan XXIV of Figure 23.
  • the connector assembly comprises a sealing device 1 and a connector body 2 presenting at least two terminal chambers 3, 3' .
  • Each of the terminal chambers 3, 3' receives a cable assembly 4 , 4 ' .
  • Each cable assembly 4, 4' comprises an individually shielded cable and an individual sealing element 5, 5'.
  • the cable comprises, concentrically from the inside to the outside, a metallic cable core 6, an inner insulating layer 7, a metallic braid 8, and an outer insulating layer 9.
  • "Insulating" layer is intended to be a layer providing both electrical and humidity isolation.
  • the outer insulating layer 9 is also called "the outer sealing layer 9".
  • Each of these concentric elements ends on successive axial portions, following a well-known striping technique.
  • a first axial portion 10 corresponds to the end of the outer insulating layer 9.
  • a second axial portion corresponds to the end portion of the metallic braid 8.
  • the individual sealing element 5 or 5' is of a tubular shape and is introduced radially between the metallic braid 8 and the inner insulating layer 7 in the second axial portion 11 of each cable assembly 4, 4'.
  • the tubular individual sealing element 5, 5' extends further to two other axial portions, in a third axial portion 12 and a fourth axial portion 13.
  • the inner insulating layer 7 extends all along to the previous axial portions 10, 11, 12, 13 up to a fifth axial portion 14 where it receives a rubber joint 15. Then, the inner insulating layer 7 is striped off and the end of the cable core 6 is crimped in an electrical terminal 16.
  • the connector body 2 comprises two half metallic shells 17 forming an electrical shield of the connector body.
  • the two half shells provide an EMI screen surrounding the different electrical elements fitted in the connector body 2.
  • Such metallic shells 17 are designed to be connected to corresponding metallic shells (not shown in the Figures) of a counterpart connector 36.
  • the back of the metallic shells 17 extends in an outside surface of the connector body 2.
  • a collective metallic braid 18 surrounds the back of the connector body 2 and is fixed and electrically connected to the metallic shells 17 by a collar 19 visible in Figure 6. Therefore, the collective metallic braid 18 continues the EMI shielding of the metallic shells 17 towards the back direction of the connector body 2.
  • the rubber joint 15 has been illustrated in the same cross section visible on Figure 6. However, it can take place in any location at the back of the electrical terminal 16, within the terminal chamber 3.
  • Each of the individual sealing element 5 comprises a conducting metallic tube 30 in which have been preliminary assembled a humidity insulating layer 31, which is made of an elastomeric material hermetically sealed onto the inner surface 32 of the conductive metallic tube 30.
  • An inner surface 33 of the humidity insulating layer 31 receives the cable core 6 and its inner insulating layer 7.
  • the inner diameter of the humidity insulating layer 31 is slightly smaller than the outer diameter of the inner insulating layer 7, at least in the fourth axial portion at the end of the conductive metallic tube 30 located towards the electric terminal 16.
  • the inside diameter of the elastomeric layer 31 may be slightly conical in order to reach a diameter bigger than that one of the inner insulating layer diameter on the backside.
  • the conical shape helps the introduction of the inner insulating layer 7 inside the individual sealing element 5.
  • the compression of the elastomeric material of the humidity-insulating layer 31 on the fourth axial portion 13 provides a humidity barrier between the inner insulating layer 7 and the conductive metallic tube 30.
  • the material of the humidity-insulating layer 31 may be a cross-linked silicone. It is a non-liquid material which is capable to remain in place during the insertion on the cable. This avoids spoiling the outer surface of the conductive metallic tube 30.
  • the sealing device 1 further comprises two individual housings 20 and 20' surrounding the corresponding cable assemblies 4, 4' from the first axial portion 10 illustrated in Figure 2 to the third axial portion 12 illustrated in Figure 4.
  • the two housings 20, 20' are joined by a bridge 21 and are made of two half parts to simplify the assembly process.
  • Each housing 20, 20' comprises a first and a second half bodies 53a, 53b which contribute to form an individual waterproof barrier 54.
  • An inner sealed volume 55 around each cable 4, 4' between the first and the axial zone 10, 12 is delimited by the individual waterproof barrier 54.
  • a sealant material 22 is introduced in a circular internal groove 23 at the back end of the housing 20, 20'.
  • This sealant material 22 terminates the humidity sealing barrier 54 between the housing 20 and the corresponding outer insulating layer 9.
  • An inner groove 24, similar to the inner groove 23 is managed in the housing 20, 20', at the third axial portion 12 and filled by a same or similar sealant material 22 in order to contribute to the humidity sealing barrier 54 between the housing 20 and the conductive metallic tube 30 of the individual sealing element 5.
  • the housing 20 comprises in the second axial portion 11 an inner chamber 25, suitable to receive an individual crimping collar 26 pressing the individual metallic braid 8 around the conductive metallic tube 30.
  • the inner chamber 25 is hermetically sealed from the outside by lips or a rubber ring 27 managed between two halves 53a, 53b of the housing 20.
  • the inner chamber 25, the sealant material 22, the conductive metallic tube 30 and the humidity-insulating layer 31 constitutes the individual waterproof barrier 54 which delimit the inner sealed volume 55 around the cable 4, 4' .
  • the sealing device 1 comprises a multi-way clamp 35 pressing simultaneously the collective metallic braid 18 around each conductive metallic tube 30 of the two individual sealing elements 5 of each cable assembly 4, 4' .
  • the multi-way clamp is made of two halves assembled by any suitable techniques like screw or elastic clips. Each half of the clamp 35 is unitary with the corresponding half of the housing 20 and 20' .
  • FIG. 7 illustrates a variant of the above described first embodiment where the multi-way clamp 35 and the housing 20 are separate devices.
  • the doted line illustrates the continuity of the humidity protection from each individually shielded cable assemblies 4, 4' to the counterpart connector 36.
  • the outer insulating layer 9 is waterproof.
  • the sealant 22 of the first axial portion 10 provides a continuity of the humidity protection to the housing 2.
  • Each housing 20, 20' are hermetically closed due to the lips 27 or due to a cylindrical shape.
  • the humidity protection directly goes up to the third axial portion 12.
  • the sealant material 22 of the inner groove 24 provides a continuity of the humidity protection, towards the conductive metallic tube 30.
  • the metal in itself is waterproof and the elastomeric layer 31 provides a humidity barrier towards the inner insulating layer 7.
  • Said humidity insulating layer 31 prolongs the humidity protection towards the rubber joint 15.
  • the rubber joint 15 provides a continuous humidity barrier towards the inner surface of the terminal chamber 3.
  • a rubber ring 37 provides a humidity barrier between the connector body 2
  • the metallic shells 17 travels across the humidity barrier without prejudice for the continuity of the humidity protection through well-known techniques like sealing rings or overmolding techniques .
  • the continuity of the EMI protection is also provided from each individually shielded cable assembly 4, 4' to the connector screen metallic shells 17.
  • the shielding stays individual for each cable assembly 4, 4' from the first to the fourth axial portions 10, 13.
  • the multi-way clamp 35 illustrated on Figure 6 provides a transition between the two individual shielding braids 8 to a collective shielding technique provided by the collective metallic braid 18 and the metallic shells 17.
  • the collective metallic braid 18 is not waterproof. So, humidity can enter at the back of the connector body 2 and is stopped in the fourth axial portion 13 as indicated by the reference “b” by the humidity insulating layer 31, and in the fifth axial portion 14 by the rubber joint 15 as indicated by the reference "c".
  • the housing 20 provides a humidity barrier between the conductive metallic tube 30 and the outer insulating layer 9.
  • the elastomeric layer 31 provides a humidity barrier between the conductive metallic tube 30 and the inner insulating layer 7. Both barriers constitute an annular waterproof termination barrier 41 between the inner and the outer insulating layer 7, 9.
  • the conductive metallic tube 30 is passing through said annular waterproof termination barrier 41.
  • the metallic braid 8 is limited to one side of the termination barrier 41 and is connected to the corresponding side of the conductive metallic tube 30. Therefore, the electric link through the termination barrier 41 only goes through the conductive metallic tube 30 and reaches the collective metallic braid 18.
  • a second embodiment of cable assembly 4, 4' comprises an individually shielded cable and an individual sealing element 5, identical or similar to the one previously described.
  • the individual sealing element 5, 5' is fitted around the inner insulating layer 7 under the end part of the electrically-conductive sheath or braid 8.
  • an adhesive heat-shrinkable sleeve 40 is fitted around both the cable and the individual sealing element 5 and covers the outer insulating layer 9 in the first axial portion 10 and extends continuously up to the third axial portion 12.
  • the adhesive constitutes a sealant material between the heat-skrinkable sleeve 40 and the outer insulating layer 9 in the first axial portion 10 and between the same sleeve 40 and the metallic tube 30 in the third axial portion 12.
  • the heat-skrinkable material of the sleeve 40, as well as the metal tubes 30, are both waterproof materials, and constitute, together with the elastomeric layer 31, a waterproof and humidity termination barrier 41 extending between the outer insulating layer 9 and the inner insulating layer 7.
  • the conductive metallic tube 30 passes hermetically through the termination barrier 41.
  • the hermeticity of that termination barrier 41 can be between 300 to 500 mbar.
  • the adhesive head-shrinkable sleeve 40 is replaced by a simple heat-shrinkable sleeve. That variant can be sufficient for automotive applications where the temperature between different portions of the cable is rather limited. Therefore, humidity variations are such that a reduced level of hermeticity of 50 to 100 mbar can be enough and reached by a direct shrinkage.
  • the heat-shrinkable sleeve can be replaced by a cold-retractable elastomeric sleeve.
  • the third and fourth embodiments of the invention illustrated in Figures 9 and 10 are alternative individual sealing elements 45, 50 which can be used for both first and second embodiments of the cable assembly or their variants in replacement of the metallic tube 30 filled with the elastomeric layer 31.
  • the individual sealing element 45 is foldable. It is made of a metallic braid 46, overmolded internally by an elastomeric material 47 like silicone.
  • the metallic strand of the braid 46 are only covered in one side of the braid 46. So, the free side of the braid 46 is still available for electrical contact.
  • a possible way to manufacture such a sealing device 45 is to externally overmold an elastomeric material around a metallic braid 46 tightly pressed on an inner mandrel. Then, the tube is reversed like a sock.
  • the fourth embodiment 50 of the individual sealing element is made of two half rigid shells 51, covered internally by an elastomeric material 52.
  • the two halves 51 can be molded in metal or can be plastic shells with metallic plating .
  • the invention covers a large variety of processes where the different operations can be done in any order.
  • Providing a conductive tube can be done before, during or after the assembly of an annular waterproof termination barrier 41 between the inner and the outer insulating layer of the cable.
  • the electrical connection between the cable sheath or braid 8 and said conductive tube can be done before, during or after the assembly of said humidity barrier 41.
  • the fifth embodiment ( Figures 11-18) and the sixth embodiment ( Figures 19-24) differ from the previous embodiments only by the way the cables 4, 4' are held and the way an electrical conductor is going across an individual waterproof barrier.
  • the way the collective metallic braid 18 is fixed on the fourth axial portion 13 and on the connector body 2, and the way the inner insulating layers 7 are sealed by the rubber joint 15 into the terminal chambers 3, 3' are identical as previously described.
  • a sealing device 100 comprises a housing 101 made of two identical half housings 101a, 101b, covering each one of the two cables 4, 4' .
  • a rear collar 102 and a front collar 103 press the two half housings 101a, 101b together.
  • the rear collar 102 provides a suitable pressure of the housings 101 on each cables 4, 4' .
  • the front part of the housing 101 guides the collective braid 18 around an external part 104 of an individual electrical conductor 105 (visible in Figures 12-14) .
  • the particular wave shape of said front part provides a suitable EMI shielding continuity between the individual electrical conductor 105 and the collective braid 18.
  • an individual sealing element 106 is a single block comprising the individual electrical conductor 105 and an individual waterproof barrier 115.
  • the individual waterproof barrier 115 is made by a unique elastomeric material overmolded over the individual electrical conductor 105.
  • the individual waterproof barrier 115 has a global tubular shape, includes an elastomeric tubular sheath 109 extending axially from an elastomeric sealing joint 110.
  • the elastomeric sealing joint 110 includes inner seal teeth 110b, suitable to provide humidity sealing with the inner insulating layer 7 of the cable 4.
  • the individual electrical conductor 105 has a tubular shape, made from a traditional punched and rolled copper alloy plate, tin-or preferably nickel- plated .
  • a central zone of the individual electrical conductor 105 is passing through the elastomeric seal 110.
  • the rolled plate includes several through holes in the overmolded central zone, through which elastomer extends, in order to reinforce the mechanical strength of the single block sealing element 106.
  • An inner part 110a of the seal 110 is designated to provide a humidity seal between the central zone of the conductor 105 and the inner insulating layer 7.
  • the individual electrical conductor 105 comprises an inner part 107 presenting a plurality of elastic spring tongues 108 having radially free ends 108a.
  • the external part 104 of the individual electrical conductor 105 has a tubular shape extending axially further the seal part 110 in the opposite direction of the tubular sheath part 109.
  • a free end 109a of the sheath part 109 extends axially further the free ends 108a of the spring tongues 108 in the opposite direction of the seal 110.
  • the free end 109a of the tubular sheath part 109 has a smaller inner diameter, at rest, than the outer sealing layer diameter. Therefore, the spring tongues 108 can cover the metallic braid 8 and the end 109a of the tubular sheath part 109 covers the end of the cable outer sealing layer 9 so as to provide humidity seal with the outer sealing layer 9.
  • the seal part 110 includes some outer teeth, the spring tongues 108 are radially separated from the tubular sheath part 109 and the external part 104 of the individual electrical conductor 105 is provided with axially elongated cut ⁇ outs making the external parts 104 radially deformable.
  • a variant of the individual sealing element 106 may not have such outer teeth.
  • the external part 104 may be a rigid metallic tube .
  • the different layers 9, 8, 7 of the cables 4, 4' are first stripped at respectively the first, the second and the fifth axial portions 10, 11, 14.
  • the tubular sheath part 109 of the individual sealing element 106 is folded like a sock in order to open slightly the spring tongues 108.
  • Such a sealing element 106 is slid on the inner insulating layer 7 of each cable 4, 4' .
  • the opened spring tongues 108 axially slide over the metallic braid 8 up to an axially butting position where the metallic braid 8 buts again the seal part 110 or the spring tongues 108 buts again the outer sealing layer 9.
  • the tubular sheath part 109 is pushed back to its rest position and the end 109a of the tubular sheath part 109 covers the outer sealing layer 9, exerts radial pressure on it and provides a humidity seal at the first axial portion 10. Then the electric terminal 16 can be crimped on the terminal core 6.
  • the sheath part 109 is overmolded onto the external face of the spring tongue 108.
  • the tubular sheath part 109 adheres permanently to the external face of the spring tongues 108, a thin strippable annular anvil may be preliminary introduced below the spring tongues 108. Only the sheath end 109a is turned back. The annular anvil slides over the metallic braid 8 and is stripped off when the individual sealing element 106 is in place.
  • the inner diameter of the spring tongues 108 at rest can be larger than the metallic braid diameter and the inner diameter of the end 109a of the tubular sheath part 109 can be slightly larger than the outer sealing layer diameter.
  • the cable 4, assembled with its sealing element 106 is introduced in a dedicated cavity 111 of the housing 101.
  • the cavity 111 comprises an annular part 112, located between the first and the second axial portions 10, 11 and protruding towards the inside of the cavity 111.
  • the annular part 112 radially presses the tubular sheath part 109 in order to press the spring tongues 108 in electrical contact with the metallic braid 8.
  • the cavity 111 may further include a front annular part 113 pressing the end 109a of the tubular sheath 109 against the outer sealing layer 9.
  • the two half housings 101a, 101b encircle each ends 109a.
  • the front annular part 113 provides a circular pressure improving the humidity sealing circular contact all around the outer sealing layer 9 of each cable 4,4' .
  • the tightening force is provided by the front collar 103.
  • the collective braid 18 encircles the main part of each external part 104 of the individual electrical conductor 105.
  • a small angular sector 114 toward the inner side of the tubular external part 104 may not to be surrounded by the collective braid 18.
  • the EMI leaks, able to propagate along that free inner side 114 are small enough to fulfil to the Electromagnetic Shielding Effectiveness requested by the car industry.
  • the sixth embodiment illustrated in Figures 19-24 is particularly suitable for a two cable power link. It is particularly simple to assemble on these two cables and requires a very limited number of parts.
  • the sealing device 200 is made of a top half sealing device 201a, and a bottom half sealing device 201b, both of them being identical.
  • each of the half sealing devices 201a, 201b comprises a half body 202, having globally an "m" cross-section defining two half cylinders, placed side by side.
  • Said half sealing device 201a, 201b further includes a guide 203 having a "V" shape or a triangular cross-section.
  • the guide 203 cooperates with the outside surface of the half body 202.
  • the half body 202 and the guide 203 are molded together in one piece with a synthetic material, and are connected together by a hinge strip 204.
  • a synthetic material is rather rigid and could be a PBT, reinforced with glass fibers.
  • Said half sealing body 202 is overmolded with a metallic conductor 205.
  • the half sealing body 202 extends around two cavities 206, adapted to receive the stripped cables 4, 4' .
  • a joint 207 extends continuously along a rear half ring portion 209, an inner lateral portion 210a, an outer lateral portion 210b and a front half ring portion 211.
  • the elastomeric joint 207 is fixed on each half device 201a, 201b in order to provide a sealed volume 208 around the stripped cables 4, 4' .
  • the elastomeric joint 207 may be overmolded on the half body 202.
  • the two joints 207 for each of the two cavities 206 can be connected together by one or several linking strips 212.
  • the single- piece or the multi-piece elastomeric joint 207 can be fixed around the corresponding cavities 206 by glue or by distributed fixation protrusions.
  • each of the two identical half devices 201a, 201b comprises an elastomeric joint 207a including only one lateral portion per cavity.
  • the part of the joint 207a corresponding to one cavity includes only the outer lateral portion 210a and the part of the joint corresponding to the other cavity includes only the inner lateral portion 210b.
  • each of the two identical half devices 201a, 201b comprises a unique continuous elastomeric joint 207b for the two cavities 206.
  • the elastomeric joint 207b comprises the two front half ring portions 209, connected by a front liaison strip 212 and the two rear half ring portions 211 connected by a rear liaison strip 212 and one or two outer lateral portion 210b.
  • the joint 207b does not include any inner lateral portion 210a.
  • the sealing device 200 can be made by two different half devices, only one of them having the lateral portions 210a, 210b of the elastomeric joint 207.
  • the combination of the two half devices 201a, 201b provides a global continuous humidity barrier 214 isolating from the outside a global seal volume 208 extending axially from both sealing layers 9 to both inner insulating layers 7.
  • Some of theses variants provide an individual humidity barrier 214a, 214b for each cable 4, 4', isolating from the outside an individual seal volume 208a, 208b for each cable 4 , 4 ' .
  • the metallic conductor 205 is made of a unique punched and rolled cooper alloy plate.
  • An external strip 215 has a global "m" shape including two half cylinder 215a, 215b, connected by a bridge 215c.
  • a plurality of spring tongues 216 extends from one side of the external strip 215.
  • Each of the spring tongues 216 comprises a radial portion 216a extending inwardly from the external strip 215 and an axial portion 216b. All the axial portions 216b extend at the same radial distance from the axis of the corresponding cavities 206 and from the external strip 215.
  • the inner surface of the external strip 215 is covered by the synthetic rigid material of the half body 202. All the radial portions 216a are passing through the thickness of the half body 202. All the axial portions 216b extend at a minimum radial distance from the inner surface of the half body 202 in order to keep axial portions 216b flexible and radially bendable .
  • the sealing method for two individually shielded cables 4, 4' can use the sealing device 200.
  • the two cables 4, 4' are previously stripped in order to make the different concentric layers 9, 8, 7, successively accessible at the axial portions 10, 11, 14, (see fig. 1) identical for the two stripped cables.
  • the two cables axes are positioned parallelly in a horizontal plane, each axial portion 10, 11, 14 of one cable being laterally in front of the corresponding axial portion of the other cable.
  • the bottom half sealing device 201b is positioned relatively to the cables 4, 4' such that:
  • the guide 203 is located under the half body 202 and axially remote from the extremity of the conductive core 6;
  • the two cavities 206 are parallel to the cable axis and axially located such that the rear half ring portion 209 is at the back of the first axial portion 10, under the cable outer insulating layer 9 and the front half ring portion 211 is located further the second axial portion 11 under the inner insulating layer 7.
  • top half sealing device 201a is symmetrically positioned from the bottom half sealing device 201b relatively to the horizontal plane of the two cables 4, 4', in order to sandwich the cables 4, 4' between the two half sealing devices 201a, 201b.
  • the half cylinder 215a, together with the spring tongues 216 extending from said half cylinder 215a constitute a half conductor 205a.
  • the half cylinder 215b and its spring tongues constitute a half conductor 205b.
  • the two half conductors, each from one half devices and corresponding to the same cable, constitute an individual conductor.
  • the radial portions 216a of each half conductor 205a, 205b are passing through the corresponding individual half humidity barrier 214a, 214b.
  • the half cylinder 215a of the external strip 215 of the bottom half device 201a, and the half cylinder 215b of the external strip 215 of the top half device 201b correspond to the same cable 4, and constitute together a tubular conductor 217 or a tubular conductive layer 217.
  • Each of the half cylinder 215a, 215b are half shells 215a, 215b, presenting a "c" shape cross-section.
  • the individual humidity barrier 214a corresponding to one of the cables 4, 4' is provided by the two half cylinders of each half body 202 surrounding said cable and by the corresponding part of the elastomeric joint 207.
  • the inner insulating layer 7 is inserted inside the tubular conductor or conductive layer 217;
  • said individual humidity barrier 214a comprises a front portion 220 extending between said tubular conductive layer 217 and the inner insulating layer 7 and a rear portion 221 extending between the outer insulating layer 9 and said tubular conducting layer 217;
  • the collective braid 18 encircles the two external strips 215 of each half sealing devices 201a, 201b.
  • the two guides 203 are turned in a closed position in order to sandwich the collective braid 18 between the external strips 215 and the guides 203.
  • a collar 218 encircles globally the collective braid 18 and the two closed guides 203.
  • the collar 218 exerts a radial pressure inwardly orientated. Such a pressure presses the two guides 203 and directly presses on the tubular conductor 217 the part of the collective braid 18 not sandwiched by the guides 203.
  • a small angular sector 219 between the two tubular conductors 217 may not be encircled by the collective braid 18.
  • said angular sector 219 is below 120°, preferably below 60°, most preferably between 35° and 45°, in order to fulfil the car industry requirements about Electromagnetic Shielding Effectiveness .
  • the collar 218 also presses the two half bodies 202 against each other. Therefore, the elastomeric joints 207 sufficiently press the outer sealing layer 9 and the inner insulating layer 7 in order to isolate the sealed volume 208, or 208a and 208b from the outside.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Insulated Conductors (AREA)

Abstract

L'invention porte sur un dispositif d'étanchéité (5) pour un câble blindé individuellement, lequel dispositif comprend une couche électriquement conductrice tubulaire (30) et une couche d'isolement vis-à-vis de l'humidité tubulaire (31). La surface externe de la couche d'isolement vis-à-vis de l'humidité est étanchement scellée dans la surface interne (32) de la couche électriquement conductrice tubulaire, la surface interne (33) de la couche d'isolement vis-à-vis de l'humidité tubulaire étant conçue de façon à s'adapter hermétiquement à une couche d'isolement interne du câble, au moins sur une partie axiale (13) du dispositif.
EP10766033A 2009-10-14 2010-10-13 Dispositif d'étanchéité pour câble blindé individuellement, et ensemble de câble correspondant Withdrawn EP2489103A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB2009007338 2009-10-14
PCT/EP2010/065294 WO2011045328A2 (fr) 2009-10-14 2010-10-13 Dispositif d'étanchéité pour câble blindé individuellement, et ensemble de câble correspondant

Publications (1)

Publication Number Publication Date
EP2489103A2 true EP2489103A2 (fr) 2012-08-22

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Application Number Title Priority Date Filing Date
EP10766033A Withdrawn EP2489103A2 (fr) 2009-10-14 2010-10-13 Dispositif d'étanchéité pour câble blindé individuellement, et ensemble de câble correspondant

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Country Link
EP (1) EP2489103A2 (fr)
CN (1) CN102598427B (fr)
WO (1) WO2011045328A2 (fr)

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WO2014060790A1 (fr) 2012-10-15 2014-04-24 Delphi International Operations Luxembourg S.À.R.L. Système de connexion électrique
WO2015013408A1 (fr) 2013-07-26 2015-01-29 Huber + Suhner, Inc. Connecteur de câble électrique blindé pour véhicule électrique
JP5984066B2 (ja) * 2013-08-02 2016-09-06 住友電装株式会社 シールド導電路
DE102013224058B4 (de) * 2013-11-26 2015-06-18 Ifm Electronic Gmbh Abgeschirmter Rundsteckverbinder mit Anschlusskabel
DE102014003976A1 (de) * 2014-03-20 2015-09-24 Man Truck & Bus Ag Verbindungsanordnung und entsprechendes Verfahren
JP6410184B2 (ja) * 2015-05-07 2018-10-24 住友電工ファインポリマー株式会社 多層熱回復物品及び接続構造
FR3067177B1 (fr) * 2017-05-30 2019-07-26 Safran Electrical & Power Blindage electromagnetique pour extremite de cables blindes
DE102017210006A1 (de) * 2017-06-14 2018-12-20 Eberspächer Catem Gmbh & Co. Kg Elektromagnetische Abschirmung
FR3073097A1 (fr) 2017-10-30 2019-05-03 Delphi International Operations Luxembourg S.A R.L. Adaptateur pour connecteur blinde, connecteur blinde et procede de montage d'un connecteur blinde
DE102019120373B4 (de) * 2019-07-29 2025-09-18 Phoenix Contact E-Mobility Gmbh Anschlussanordnung und Fahrzeug
WO2022226895A1 (fr) * 2021-04-29 2022-11-03 Corning Research & Development Corporation Ensembles de câbles de distribution optiques préconnectorisés et procédés de déploiement correspondants

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Also Published As

Publication number Publication date
CN102598427A (zh) 2012-07-18
WO2011045328A3 (fr) 2011-12-22
CN102598427B (zh) 2015-11-25
WO2011045328A2 (fr) 2011-04-21

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