EP2842199B1 - Method for connecting the conductors of a flexible bonded (equipotential) connection layer, as well as crimping tool, connectors and wiring loom fitted with such connectors - Google Patents

Method for connecting the conductors of a flexible bonded (equipotential) connection layer, as well as crimping tool, connectors and wiring loom fitted with such connectors Download PDF

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Publication number
EP2842199B1
EP2842199B1 EP13728777.7A EP13728777A EP2842199B1 EP 2842199 B1 EP2842199 B1 EP 2842199B1 EP 13728777 A EP13728777 A EP 13728777A EP 2842199 B1 EP2842199 B1 EP 2842199B1
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EP
European Patent Office
Prior art keywords
conductors
connector
connectors
crimping
cells
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.)
Active
Application number
EP13728777.7A
Other languages
German (de)
French (fr)
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EP2842199A1 (en
Inventor
Jean-Luc Biesse
Arnaud Camille AYME
Florian Barraud
David Boutot
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.)
Mecatraction SAS
Safran Electrical and Power SAS
Original Assignee
Mecatraction SAS
Labinal Power Systems SAS
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Application filed by Mecatraction SAS, Labinal Power Systems SAS filed Critical Mecatraction SAS
Publication of EP2842199A1 publication Critical patent/EP2842199A1/en
Application granted granted Critical
Publication of EP2842199B1 publication Critical patent/EP2842199B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/06—Extensible conductors or cables, e.g. self-coiling cords
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/69—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal deformable terminals, e.g. crimping terminals
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
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    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H01R4/203—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve having an uneven wire-receiving surface to improve the contact
    • H01R4/206—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve having an uneven wire-receiving surface to improve the contact with transversal grooves or threads
    • H—ELECTRICITY
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    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
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    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H—ELECTRICITY
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    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0482—Crimping apparatus or processes combined with contact member manufacturing mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/08—Short-circuiting members for bridging contacts in a counterpart
    • H01R31/085—Short circuiting bus-strips
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/182—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for flat conductive elements, e.g. flat 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
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H—ELECTRICITY
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    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
    • H—ELECTRICITY
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    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49181—Assembling terminal to elongated conductor by deforming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T29/49002—Electrical device making
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    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49222—Contact or terminal manufacturing by assembling plural parts forming array of contacts or terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T29/532—Conductor
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    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53217—Means to simultaneously assemble multiple, independent conductors to terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53239—Means to fasten by elastic joining

Definitions

  • the invention relates to a method for connecting uninsulated electrical conductors of a flexible bonding bonding sheet for connecting metal parts, in particular electrical current return networks of new generation aircraft skin made of a composite material.
  • the invention also relates to a crimping tool capable of implementing this method, terminal and intermediate connectors for such conductors, and a flexible ribbon bonding harness equipotential equipped with such connectors to connect such a sheet of conductors to said metal parts of current return.
  • the composite material of this new generation of skin comprises a heterogeneous material based on carbon fibers.
  • the electrical interconnection functions were performed by the aluminum skin of the older generation.
  • the aircraft manufacturers used it in effect for the current feedback of the consumer equipment, the setting at the same potential of all the metal parts, the EMC (Electromagnetic Compatibility) protection of the electrical installation, and the flows of the lightning currents - indirect and induced - and electrostatic charges.
  • the invention can also be applied in any architecture or building for the passage of electricity requiring the equipotential current setting, in particular, but not exclusively, to fuselages of aircraft composite skin passenger cabins.
  • the document FR 2826518 describes a method according to the preamble of claim 1.
  • Composite carbon materials are poor conductors of electricity and poorly support the heating caused by the Joule effect. Such a coating can not therefore be used to perform the above functions.
  • this network consists of three longitudinal networks that run along the fuselage of the aircraft.
  • the plane skin of carbon material 5 appears in the form of a curved wall on which are fixed three parts of an example of network 10 of the current return: upper longitudinal portions 10s, median 10m and lower 10i.
  • the upper part 10s of the network comprises a central support 11 and lateral supports 12 metal.
  • the central support 11 accommodates cabling and technical equipment, while the lateral supports 12 support the luggage compartments.
  • the middle portion 10m consists of a metal cross member 14 on which are mounted the metal rails 15 of the passenger seats.
  • the lower part 10i comprises another metal crosspiece 16 for supporting the metal cargo rails 18.
  • Metal rods of structure 19 connect the middle metal crossmember 14 and the lower metal crossmember 16.
  • the upper, middle and lower parts are interconnected by the transverse structure frame 20 made of composite material based on carbon fibers.
  • a flexible harness 30 connects the supports 11 and 12 of the upper part 10s to the crosspiece 14.
  • the harness 30 comprises two end connectors 32, fixed on the central support 11 and on the middle crosspiece 14, and an intermediate connector 34 fixed on a lateral support 12.
  • the harness 30 consists of a flat sheet 50 of conductors non-electrically insulated, formed of strands of aluminum strands, in conjunction with the connectors 32 and 34.
  • Such a harness allows a path in a narrow space, for example between the carbon frame 20 and a thermo-phonic protection panel or a cockpit panel of the passenger cabin.
  • a network of electricity network is thus created in order to increase the operational safety.
  • One of the critical points of this mesh lies in the manner of producing the intermediate connectors 34 and terminals 32 of connection between the sheet of aluminum conductors 50 and the metal structures constituting the network 10 of aircraft current return.
  • Conductor connections are conventionally made from lugs and extensions for aluminum cables, or from a ground module.
  • these lugs, extenders or modules do not allow to achieve reproducible, uniform, sealed and reliable connections with non-insulated aluminum stranded conductors, minimizing the mass with low cost.
  • these aspects of mass, uniformity of effort distribution and cost are of fundamental importance.
  • the existing solutions do not allow to distribute the forces and connection resistance of the conductors simultaneously, individually and homogeneously.
  • the connector must be easily interfaced with the metal structures of the current return network.
  • a uniform crimping of several conductors is not feasible by known crimping tools which generally combine a punch and a matrix, or several diametrically opposed punches, to crimp each conductor individually.
  • the known connectors do not provide a reliable and durable seal for a multitude of non-electrically insulated aluminum alloy conductors, the seal being provided only by the insulating sheath of the cables with a connector pods or mass modules.
  • the object of the invention is to provide a reproducible, uniform, tight and reliable connection for both intermediate and terminal connections of a conductor belt harness of the type described above.
  • the invention provides for a simultaneous crimping of the conductors in connectors by the exercise of a continuous and uniform pressure in a crimping zone.
  • the present invention relates to a crimp connection method of electrical conductors in equipotential bonding connectors to metal parts.
  • These electrical conductors which form a flat and flexible sheet, are positioned in longitudinal and parallel individual cells, formed between two flat walls of each connector.
  • These conductors are then crimped in a crimping zone by transverse and simultaneous punching of at least one connector wall. This transverse punching forms at least one corresponding transverse groove line on said at least one connector wall and, by charge transfer, on each of the conductors.
  • the present invention also relates to a crimping tool comprising two shells, each shell having a main wall forming an inner face provided with at least one transverse rib, each shell also having end edges folded perpendicular to the walls so as to define an internal space.
  • a conductor connector arranged perpendicular to the ribs may be introduced to implement the crimp connection method defined above.
  • the crimping tool comprises two ribs on the inner face of a shell and a rib interposed between the two other ribs on the inner face of the other shell disposed facing during crimping.
  • Another object of the invention is a modular multi-point connector for connecting a layer of conductors and parallel to a metal part of return of current.
  • a connector comprises longitudinal internal housing cells of the conductors, these cells being formed by two inner faces of walls extending longitudinally. At least one crimping groove of the conductors extends transversely on at least one inner face of walls.
  • This connector also comprises means for connection to metal parts of current return, these means being fixed by at least one opening formed in said walls.
  • the invention also relates to a connecting harness capable of connecting metal parts of current return.
  • This harness comprises parallel conductors forming a flat and flexible sheet, multipoint terminal and intermediate modular connectors defined above for connection to said metal parts, and an envelope covering the sheet and the connection between the sheet and the connectors.
  • Terminal connectors 32 such as that illustrated by the front views and in sections II-II and II'-II 'of Figures 2a to 2c , comprise an upper wall 32s and a lower wall 32i between which extend from one side 32c and along the entire length of this side, aligned individual cells 57.
  • Each cell 57 is adapted to receive a conductor end for be crimped along its entire length.
  • a chamfer 57c is provided at the entrance of each cell 57 to facilitate insertion of the conductor and maintain the cohesion of the aluminum strands of the conductors 51 ( figure 5 ) between them when inserting the conductors 51 into their individual cell. This avoids one or more Aluminum strands do not remain outside the crimp cell.
  • the cells 57 are blind cavities.
  • the end connectors 32 are connected to the metal support parts 11 and cross-member 14 ( figure 1 ) back current by appropriate fasteners and interfaces.
  • the electrical contact area 54c surrounding the fixing opening 54 is extended so as not to exceed defined Joule heating limits.
  • the terminal connector illustrated has a longitudinal axis of symmetry X'X with a tip advanced 32a, the opening 54 being made substantially in the center of this end.
  • a fixing interface can receive a jogging, folding at a given angle, etc.
  • the interface can be quick disconnect, by 1 ⁇ 4 turn or equivalent.
  • connections are quick disassembly, so as to make a connection / disconnection for example in less than 10 seconds.
  • the connections R1, R2, R3, then consist of two parts: a part 2 of the connector, not removable of the terminal connector 32, replaces the opening connection system 54.
  • the geometry of the tip 32a ( figure 2a ) is modified locally to adapt this part 2 of the quick connect / disconnect system.
  • the complementary part 3, mounted by screwing or clipping means 4 on the part 2, is then installed on a current return element 10 ( figure 1 ).
  • a first section of this part 2 is constituted for example by a cable 2c ( figure 3c ) and can be mounted by crimping means 4c on the terminal connector 32
  • This connector has upper 34s and lower walls 34i between which there are cavities 58 along the entire length of the sides 34c.
  • the cells 58 are constituted by longitudinally through cavities which pierce the connector 34 from one side to the other. These cavities are terminated by chamfers 58c facilitating the access of the conductors to the cells 58.
  • the conductors 51 are inserted individually into the cells 58 without interruption, which results in a gain in contact resistance and an increase in the reliability of the connection.
  • the conductors are crimped into the cells in crimping zones Zs formed near one and / or the other of the sides 34c of the connector 34.
  • the intermediate connector 34 may have a single advance 35 with an attachment opening 56 or, as shown, two symmetrical advances 35 with respect to the longitudinal axis X'X, with two attachment apertures 56.
  • the extent of the The electrical contact pad 56a surrounding the fixing opening 56 is optimized according to the thermal clearance and the fastenings are made by screwing or equivalent through the openings 56.
  • this interface can receive a jig, a folding at a given angle or equivalent. Also, other variants of this interface can be quick disconnect, 1 ⁇ 4 turn or equivalent.
  • these intermediate connectors 34 make it possible to connect a current return cable of a device as close as possible to this equipment, forming a bypass tee, for example using the connections R1 to R3 illustrated by the Figures 3a to 3c .
  • each conductor 51 is composed of elementary aluminum strands 55 grouped in strand, as illustrated by the view in section of the figure 5 .
  • the example conductor is a calibrated AWG12 gauge that has an outside diameter of about 2mm.
  • the connector harness is thus adaptable depending on the configuration and dimensions of the installation to achieve.
  • this connection can adapt to the resistivity of the connection to be connected, the transit current or overcurrent, the number of fixing points and the size of the installation as well as the number of parts to be connected.
  • the geometry of the connectors makes it possible to reduce their total mass to the strict minimum.
  • the thickness of the connectors 32 and 34 between their walls is just the maximum diameter of the conductors 51 while remaining sufficient to maintain robustness compatible with the presence of the cells.
  • the connectors are advantageously constituted by an aluminum alloy for electrical use, and therefore have a low resistivity.
  • a surface treatment of the connectors (nickel plating, tinning, etc.) is preferably carried out so that this surface is not very resistive and forms electrical connections interfaced with a tight fit by hooping with the supports 11, 12, and crosspieces 14. , 16 to be connected (cf. figure 1 ). Thus, the risks of galvanic corrosion at the electrical connection are eliminated.
  • the sheet is also modular in order to facilitate its adaptability: the number of conductors 51, their section, the dimensions of the connectors, the number of intermediate connectors, the thickness and the width of the sheet are adjustable. In addition, the electrical and mechanical interfaces of connection are adaptable to the part to be connected.
  • the finish at the end connectors 32 and intermediate 34 is provided by sections of thermo-shrinkable polyolefin sheath or equivalent.
  • This outer envelope of finishing is, in another example, carried out by a local overmoulding, low or high pressure.
  • a dedicated tool exerts a simultaneous and uniform pressure on the walls 32s and 32i of the end connectors 32 (or between the walls 34s and 34i of the intermediate connectors 34), in order to optimize the connection by minimizing the plastic deformation and the displacement of the material of the connectors.
  • control of the crimping pressure does not cause crack in the connector 32.
  • the crimping of all the cells 57 is performed simultaneously and in a single operation.
  • the crimping compresses and deforms the individual strands of the conductors 51, but does not change the equivalent section of conductive material of the conductors.
  • the elementary crimping length is such that the pulling force that must be exerted on a conductor 51 to slide or tear it from its crimping is greater than the elastic limit of this conductor.
  • the drivers are not uncracked before crimping.
  • the electrical resistance of an elemental crimp is then less than or equal to the electrical resistance of the length of conductor equivalent to the length of the crimping.
  • the adequate surface treatment of the conductors 51 - by nickel plating, tin plating, silver plating or the like - allows electrochemical compatibility with that of the connectors. And the surface treatments are not destroyed by crimping.
  • an example of crimping tool 21 comprises two shells, a so-called upper shell 21s and a so-called lower shell 21i.
  • Each shell consists of a main wall P1 forming an internal face F1 and end edges B1 folded (at least on a shell) perpendicularly to the main wall P1 so as to define an internal space E1.
  • the inner face F1 of the upper wall 21s is provided with a transverse rib N1.
  • the connector 32 is inserted into the space E1 so that the shells 21s and 21i are disposed on either side of the walls 32s and 32i of the connector 32 to be crimped, a terminal connector in the example .
  • the rib N1 of the shell 21s positioned transversely, is located approximately midway of the portion 51 p of the conductors 51 located in the cells 57. This positioning is also adapted to crimp the conductors in an intermediate connector according to the invention.
  • each shell 21 s and 21 i of the tool 21 During crimping, the same pressure Ps is exerted on each shell 21 s and 21 i of the tool 21, so as to bring the two shells 21 s and 21 i until the contact edges B1, as illustrated by the Figures 6c and 6d .
  • the rib N1 penetrates uniformly and simultaneously into the wall 32s of the connector 32, forms a transverse cylindrical groove Rc in this wall 32s and, by charge transfer, compresses and deforms the conductors 51.
  • the upper shell 22s of the tool 22 has, as previously, a transverse rib N1.
  • the inner face F2 of the lower shell 22i has two transverse ribs N2 and N3.
  • the rib N1 is interposed between the ribs N2 and N3.
  • the exercise of the pressures Ps on the shells 22s and 22i causes a uniform and simultaneous penetration of the ribs N1 to N3 in the walls 32s and 32i of the connector 32.
  • grooves Rc are then formed on the walls 32s and 32i of the connector 32.
  • the connector 32 is presented upside down on these Figures 8a and 8b compared to standard use.
  • charge transfer from the grooves Rc the strands 55 of the conductors 51 are compressed and deformed alternately so as to have a waveform.
  • the invention is not limited to the embodiments described and shown. It is for example possible to provide hybrid intermediate connectors formed in part by through cavities and by blind cells to house the conductors.
  • the conductors are preferably aluminum alloy but could also be optionally copper or titanium alloy.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

DOMAINE TECHNIQUETECHNICAL AREA

L'invention concerne un procédé de connexion de conducteurs électriques non isolés d'une nappe souple de liaison équipotentielle pour raccorder des pièces métalliques, en particulier des réseaux électriques de retour de courant d'avions de nouvelle génération à peau constituée par un matériau composite. L'invention se rapporte également à un outil de sertissage apte à mettre en oeuvre ce procédé, des connecteurs terminaux et intermédiaires pour de tels conducteurs, ainsi qu'un harnais à nappe souple de liaison équipotentielle équipé de tels connecteurs pour raccorder une telle nappe de conducteurs auxdites pièces métalliques de retour de courant.The invention relates to a method for connecting uninsulated electrical conductors of a flexible bonding bonding sheet for connecting metal parts, in particular electrical current return networks of new generation aircraft skin made of a composite material. The invention also relates to a crimping tool capable of implementing this method, terminal and intermediate connectors for such conductors, and a flexible ribbon bonding harness equipotential equipped with such connectors to connect such a sheet of conductors to said metal parts of current return.

Le matériau composite de cette nouvelle génération de peau comporte un matériau hétérogène à base de fibres de carbone. Classiquement, les fonctions d'interconnexion électrique étaient réalisées par la peau en aluminium de l'ancienne génération. Les avionneurs l'utilisaient en effet pour le retour de courant des équipements consommateurs, la mise au même potentiel de toutes les pièces métalliques, la protection CEM (Compatibilité Electromagnétique) de l'installation électrique, et les écoulements des courants de foudre - indirects et induits - et des charges électrostatiques.The composite material of this new generation of skin comprises a heterogeneous material based on carbon fibers. Conventionally, the electrical interconnection functions were performed by the aluminum skin of the older generation. The aircraft manufacturers used it in effect for the current feedback of the consumer equipment, the setting at the same potential of all the metal parts, the EMC (Electromagnetic Compatibility) protection of the electrical installation, and the flows of the lightning currents - indirect and induced - and electrostatic charges.

L'invention peut également s'appliquer dans toute architecture ou bâtiment de passage de l'électricité nécessitant la mise équipotentielle du courant, en particulier, mais non exclusivement, aux fuselages de cabines passagers d'avion à peau composite.The invention can also be applied in any architecture or building for the passage of electricity requiring the equipotential current setting, in particular, but not exclusively, to fuselages of aircraft composite skin passenger cabins.

ETAT DE LA TECHNIQUESTATE OF THE ART

Le document FR 2826518 décrit un procédé selon le preambule de la revendication 1.The document FR 2826518 describes a method according to the preamble of claim 1.

Les matériaux composites carbone sont de médiocres conducteurs de l'électricité et supportent mal les échauffements provoqués par effet Joule. Un tel revêtement ne peut donc pas être utilisé pour assurer les fonctions ci-dessus.Composite carbon materials are poor conductors of electricity and poorly support the heating caused by the Joule effect. Such a coating can not therefore be used to perform the above functions.

Pour permettre la mise en oeuvre des fonctions d'interconnexion électrique pour un avion à peau à structure composite, il a alors été conçu une architecture composée de pièces réalisées en métal pour créer un réseau électrique. Globalement, ce réseau se compose de trois réseaux longitudinaux qui courent le long du fuselage de l'avion. En référence à la coupe transversale de la cabine passagers de la figure 1, la peau d'avion en matériau carbone 5 apparaît sous la forme d'une paroi courbée sur laquelle sont fixées trois parties d'un exemple de réseau 10 du retour de courant : des parties longitudinales supérieure 10s, médiane 10m et inférieure 10i.To allow the implementation of electrical interconnection functions for a composite skin aircraft, it was then designed an architecture composed of parts made of metal to create an electrical network. Overall, this network consists of three longitudinal networks that run along the fuselage of the aircraft. With reference to the cross-section of the passenger cabin of the figure 1 the plane skin of carbon material 5 appears in the form of a curved wall on which are fixed three parts of an example of network 10 of the current return: upper longitudinal portions 10s, median 10m and lower 10i.

La partie supérieure 10s du réseau comporte un support central 11 et des supports latéraux 12 métalliques. Le support central 11 accueille du câblage et du matériel technique, alors que les supports latéraux 12 supportent les coffres à bagages.The upper part 10s of the network comprises a central support 11 and lateral supports 12 metal. The central support 11 accommodates cabling and technical equipment, while the lateral supports 12 support the luggage compartments.

La partie médiane 10m se compose d'une traverse métallique 14 sur laquelle sont montés les rails métalliques 15 des sièges passagers.The middle portion 10m consists of a metal cross member 14 on which are mounted the metal rails 15 of the passenger seats.

La partie inférieure 10i comporte une autre traverse métallique 16 de support des rails cargo métalliques 18. Des bielles métalliques de structure 19 relient la traverse métallique médiane 14 et la traverse métallique inférieure 16.The lower part 10i comprises another metal crosspiece 16 for supporting the metal cargo rails 18. Metal rods of structure 19 connect the middle metal crossmember 14 and the lower metal crossmember 16.

Les parties supérieure, médiane et inférieure sont interconnectées par le cadre de structure transversal 20 en matériau composite à base de fibres de carbone. Sur ce cadre carbone 20, un harnais flexible 30 raccorde les supports 11 et 12 de la partie supérieure 10s à la traverse médiane 14.The upper, middle and lower parts are interconnected by the transverse structure frame 20 made of composite material based on carbon fibers. On this carbon frame 20, a flexible harness 30 connects the supports 11 and 12 of the upper part 10s to the crosspiece 14.

Dans l'exemple de cheminement de la figure 1, le harnais 30 comporte deux connecteurs terminaux 32, fixés sur le support central 11 et sur la traverse médiane 14, ainsi qu'un connecteur intermédiaire 34 fixé sur un support latéral 12. Le harnais 30 se compose d'une nappe plate 50 de conducteurs non isolés électriquement, formés de torons de brins d'aluminium, en liaison avec les connecteurs 32 et 34. Un tel harnais permet un cheminement dans un espace étroit, par exemple entre le cadre carbone 20 et un panneau de protection thermo-phonique ou un panneau d'habillage de la cabine passagers.In the example of how the figure 1 , the harness 30 comprises two end connectors 32, fixed on the central support 11 and on the middle crosspiece 14, and an intermediate connector 34 fixed on a lateral support 12. The harness 30 consists of a flat sheet 50 of conductors non-electrically insulated, formed of strands of aluminum strands, in conjunction with the connectors 32 and 34. Such a harness allows a path in a narrow space, for example between the carbon frame 20 and a thermo-phonic protection panel or a cockpit panel of the passenger cabin.

Un maillage de réseau électrique est ainsi créé afin d'augmenter la sûreté de fonctionnement.A network of electricity network is thus created in order to increase the operational safety.

Un des points critiques de ce maillage réside dans la manière de réaliser les connecteurs intermédiaires 34 et terminaux 32 de connexion entre la nappe de conducteurs en aluminium 50 et les structures métalliques constituant le réseau 10 de retour de courant avion.One of the critical points of this mesh lies in the manner of producing the intermediate connectors 34 and terminals 32 of connection between the sheet of aluminum conductors 50 and the metal structures constituting the network 10 of aircraft current return.

Des raccordements de conducteurs sont réalisés classiquement à partir de cosses et prolongateurs pour des câbles en aluminium, ou de module de masse. Cependant ces cosses, prolongateurs ou modules ne permettent pas de réaliser des connexions reproductibles, uniformes, étanches et fiables avec des conducteurs multibrins non isolés en aluminium, une minimisation de la masse avec un coût faible. Dans le domaine aéronautique en particulier, ces aspects de masse, d'uniformité de répartition des efforts et de coût revêtent une importance fondamentale.Conductor connections are conventionally made from lugs and extensions for aluminum cables, or from a ground module. However, these lugs, extenders or modules do not allow to achieve reproducible, uniform, sealed and reliable connections with non-insulated aluminum stranded conductors, minimizing the mass with low cost. In the aeronautical field in particular, these aspects of mass, uniformity of effort distribution and cost are of fundamental importance.

En particulier, les solutions existantes ne permettent pas de répartir les efforts et les résistances de connexion des conducteurs simultanément, de manière individuelle et homogène. En outre, la connectique doit pouvoir s'interfacer facilement avec les structures métalliques du réseau de retour de courant. Par ailleurs, un sertissage uniforme de plusieurs conducteurs n'est pas réalisable par les outils de sertissage connus qui associent en général un poinçon et une matrice, ou bien plusieurs poinçons diamétralement opposés, pour sertir chaque conducteur individuellement. De plus, les connecteurs connus ne permettent pas d'assurer une étanchéité fiable et durable pour une multitude de conducteurs en alliage d'aluminium non isolés électriquement, l'étanchéité n'étant assurée que par la gaine isolante des câbles avec une connectique de cosses ou de modules de masse.In particular, the existing solutions do not allow to distribute the forces and connection resistance of the conductors simultaneously, individually and homogeneously. In addition, the connector must be easily interfaced with the metal structures of the current return network. Moreover, a uniform crimping of several conductors is not feasible by known crimping tools which generally combine a punch and a matrix, or several diametrically opposed punches, to crimp each conductor individually. In addition, the known connectors do not provide a reliable and durable seal for a multitude of non-electrically insulated aluminum alloy conductors, the seal being provided only by the insulating sheath of the cables with a connector pods or mass modules.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention vise à réaliser une connectique reproductible, uniforme, étanche et fiable tant pour des connexions intermédiaires que terminales d'un harnais à nappe de conducteurs du type décrit ci-dessus. Pour ce faire, l'invention prévoit un sertissage simultané des conducteurs dans des connecteurs par l'exercice d'une pression continue et uniforme dans une zone de sertissage.The object of the invention is to provide a reproducible, uniform, tight and reliable connection for both intermediate and terminal connections of a conductor belt harness of the type described above. To do this, the invention provides for a simultaneous crimping of the conductors in connectors by the exercise of a continuous and uniform pressure in a crimping zone.

Plus précisément, la présente invention a pour objet un procédé de connexion par sertissage de conducteurs électriques dans des connecteurs de liaison équipotentielle à des pièces métalliques. Ces conducteurs électriques, qui forment une nappe plate et souple, sont positionnés dans des alvéoles individuelles longitudinales et parallèles, formées entre deux parois planes de chaque connecteur. Ces conducteurs sont ensuite sertis dans une zone de sertissage par un poinçonnage transversal et simultané d'au moins une paroi de connecteur. Ce poinçonnage transversal forme au moins une ligne de rainure transversale correspondante sur ladite au moins une paroi de connecteur et, par transfert de charge, sur chacun des conducteurs.More specifically, the present invention relates to a crimp connection method of electrical conductors in equipotential bonding connectors to metal parts. These electrical conductors, which form a flat and flexible sheet, are positioned in longitudinal and parallel individual cells, formed between two flat walls of each connector. These conductors are then crimped in a crimping zone by transverse and simultaneous punching of at least one connector wall. This transverse punching forms at least one corresponding transverse groove line on said at least one connector wall and, by charge transfer, on each of the conductors.

Selon des modes de réalisation préférés :

  • le poinçonnage est réalisé par pressage uniforme d'une nervure sur au moins une paroi du connecteur ;
  • le poinçonnage est alterné de sorte que les rainures transversales sont intercalées pour former un cheminement ondulant des conducteurs dans les connecteurs ;
  • les nervures et les rainures correspondantes sont de forme cylindrique.
According to preferred embodiments:
  • punching is achieved by uniformly pressing a rib on at least one wall of the connector;
  • the punching is alternated so that the transverse grooves are interposed to form a waving path of the conductors in the connectors;
  • the ribs and the corresponding grooves are of cylindrical shape.

La présente invention a également pour objet un outil de sertissage comportant deux coques, chaque coque possédant une paroi principale formant une face interne munie d'au moins une nervure transversale, chaque coque possédant également des bords d'extrémité rabattus perpendiculairement aux parois de sorte à définir un espace interne. Dans cet espace, un connecteur de conducteurs agencés perpendiculairement aux nervures peut être introduit afin de mettre en oeuvre le procédé de connexion par sertissage défini ci-dessus.The present invention also relates to a crimping tool comprising two shells, each shell having a main wall forming an inner face provided with at least one transverse rib, each shell also having end edges folded perpendicular to the walls so as to define an internal space. In this space, a conductor connector arranged perpendicular to the ribs may be introduced to implement the crimp connection method defined above.

De manière préférée, l'outil de sertissage comporte deux nervures sur la face interne d'une coque et une nervure intercalée entre les deux autres nervures sur la face interne de l'autre coque disposée en regard lors du sertissage.Preferably, the crimping tool comprises two ribs on the inner face of a shell and a rib interposed between the two other ribs on the inner face of the other shell disposed facing during crimping.

Un autre objet de l'invention est un connecteur modulaire multipoints de liaison d'une nappe de conducteurs et parallèles à une pièce métallique de retour de courant. Un tel connecteur comporte des alvéoles internes longitudinales de logement des conducteurs, ces alvéoles étant formées par deux faces internes de parois s'étendant longitudinalement. Au moins une rainure de sertissage des conducteurs s'étend transversalement sur au moins une face interne de parois. Ce connecteur comporte également des moyens de raccordement à des pièces métalliques de retour de courant, ces moyens étant fixés par au moins une ouverture formée dans lesdites parois.Another object of the invention is a modular multi-point connector for connecting a layer of conductors and parallel to a metal part of return of current. Such a connector comprises longitudinal internal housing cells of the conductors, these cells being formed by two inner faces of walls extending longitudinally. At least one crimping groove of the conductors extends transversely on at least one inner face of walls. This connector also comprises means for connection to metal parts of current return, these means being fixed by at least one opening formed in said walls.

Selon des modes de réalisation préférés :

  • le connecteur est un connecteur terminal dans lequel les alvéoles borgnes débouchent en extrémité sur une face transversale ;
  • les moyens de fixation sont alors agencés à une extrémité autre que la face de sortie des alvéoles, en particulier à une extrémité opposé à cette face de sortie ;
  • le connecteur est un connecteur intermédiaire dans lequel les alvéoles sont traversantes et débouchent en extrémité sur deux faces transversales ;
  • les moyens de raccordement sont agencés dans une zone centrale des parois du connecteur.
According to preferred embodiments:
  • the connector is a terminal connector in which the blind cells open at the end on a transverse face;
  • the fixing means are then arranged at one end other than the exit face of the cells, in particular at an end opposite this exit face;
  • the connector is an intermediate connector in which the cells are through and open at the end on two transverse faces;
  • the connection means are arranged in a central zone of the walls of the connector.

Selon des modes de réalisation avantageux :

  • les connecteurs sont en alliage d'aluminium à faible résistivité ;
  • les connecteurs sont traités en surface, en particulier par nickelage, étamage, argenture ou équivalent, pour réaliser un assemblage par frettage en ajustement serré avec les pièces correspondantes à raccorder afin d'empêcher une corrosion galvanique ;
  • les alvéoles présentent en extrémité des surfaces chanfreinées afin de faciliter l'insertion des conducteurs ;
  • les connecteurs intermédiaires en liaison avec la nappe et avec les pièces à raccorder sont insérés en tout point de la nappe entre deux connecteurs terminaux ;
  • les connecteurs terminaux et intermédiaires présentent une épaisseur à peine supérieure au diamètre des conducteurs.
According to advantageous embodiments:
  • the connectors are low-resistivity aluminum alloy;
  • the connectors are surface-treated, in particular by nickel-plating, tin-plating, silver-plating or the like, to form a tight-fitting shrink fit with the corresponding parts to be connected in order to prevent galvanic corrosion;
  • the cells have end chamfered surfaces in order to facilitate insertion of the conductors;
  • the intermediate connectors in connection with the web and with the parts to be connected are inserted at any point of the web between two terminal connectors;
  • the terminal and intermediate connectors have a thickness barely greater than the diameter of the conductors.

L'invention a également pour objet un harnais de liaison apte à raccorder des pièces métalliques de retour de courant. Ce harnais comporte des conducteurs parallèles formant une nappe plate et flexible, des connecteurs terminaux et intermédiaires modulaires multipoints définis ci-dessus de raccordement auxdites pièces métalliques, et une enveloppe recouvrant la nappe et la liaison entre la nappe et les connecteurs.The invention also relates to a connecting harness capable of connecting metal parts of current return. This harness comprises parallel conductors forming a flat and flexible sheet, multipoint terminal and intermediate modular connectors defined above for connection to said metal parts, and an envelope covering the sheet and the connection between the sheet and the connectors.

Selon des modes de réalisation particuliers :

  • chaque conducteur est constitué d'une multitude de brins élémentaires en aluminium groupés en toron et les conducteurs sont assemblés entre eux par des liens perpendiculaires aux conducteurs et répartis le long de la nappe ;
  • l'enveloppe est constituée en matériau PVF (polyfluorovinyle) ou PTFE (polytétrafluoroéthylène) ;
  • l'enveloppe comporte des films souples étanches d'isolation de recouvrement de la nappe de conducteurs et une gaine thermo-rétractable enduite de produit étanche.
According to particular embodiments:
  • each conductor consists of a multitude of elementary aluminum strands grouped in strand and the conductors are assembled together by links perpendicular to the conductors and distributed along the sheet;
  • the casing is made of PVF material (polyfluorovinyl) or PTFE (polytetrafluoroethylene);
  • the casing comprises flexible flexible films insulating cover of the conductor web and a heat-shrinkable sheath coated with waterproof product.

PRESENTATION DES FIGURESPRESENTATION OF FIGURES

D'autres aspects et particularités de la mise en oeuvre de l'invention apparaîtront à la lecture de la description détaillée qui suit, accompagnée de dessins annexés qui représentent, respectivement :

  • en figure 1, une vue en coupe transversale d'une partie de cabine passagers d'avion équipée d'un exemple de harnais selon l'état de la technique (déjà commentée) ;
  • en figure 2a à 2c, des vues frontale et en coupes selon II-II et II'-II' d'un exemple de connecteur terminal selon l'invention ;
  • en figures 3a à 3c, des exemples schématiques en vues latérales et supérieures de liaisons d'un connecteur terminal selon l'invention au réseau de retour de courant ;
  • en figures 4a à 4c, des vues frontales et en coupes selon IV-IV et IV'-IV' d'un exemple de connecteur intermédiaire multipoints ;
  • en figure 5, une vue en coupe transversale d'un des conducteurs de nappe à sertir dans un connecteur ;
  • en figures 6a à 6d, des vues frontales (figures 6a et 6c) et en coupe (figures 6b et 6d)), respectivement avant et après sertissage, d'un exemple d'outil de sertissage de conducteurs dans un connecteur selon l'invention ;
  • en figures 7a à 7d, des vues en perspective (figures 7a et 7b), une vue frontale (figure 7c) et une vue en coupe (figure 7d) d'un autre exemple d'outil de sertissage de conducteurs dans un connecteur selon l'invention, et
  • en figures 8a et 8b, une vue en perspective et une vue en coupe d'un connecteur terminal après sertissage des conducteurs avec l'outil selon les figures 7a à 7d.
Other aspects and particularities of the implementation of the invention will appear on reading the detailed description which follows, accompanied by appended drawings which represent, respectively:
  • in figure 1 , a cross-sectional view of a passenger cabin portion of aircraft equipped with an example of harness according to the state of the art (already commented);
  • in Figure 2a to 2c front and section views according to II-II and II'-II 'of an exemplary terminal connector according to the invention;
  • in Figures 3a to 3c schematic examples in side and top views of connections of a terminal connector according to the invention to the current return network;
  • in Figures 4a to 4c front and sectional views according to IV-IV and IV'-IV 'of an example of multipoint intermediate connector;
  • in figure 5 a cross-sectional view of one of the crimped ply conductors in a connector;
  • in Figures 6a to 6d , frontal views ( Figures 6a and 6c ) and in section ( Figures 6b and 6d )), respectively before and after crimping, of an example of crimping tool of conductors in a connector according to the invention;
  • in Figures 7a to 7d , perspective views ( Figures 7a and 7b ), a frontal view ( Figure 7c ) and a sectional view ( figure 7d ) another example of a tool for crimping conductors in a connector according to the invention, and
  • in Figures 8a and 8b , a perspective view and a sectional view of a terminal connector after crimping the conductors with the tool according to the Figures 7a to 7d .

DESCRIPTION DETAILLEEDETAILED DESCRIPTION

Des signes de référence identiques, utilisés dans les différentes figures, se rapportent à des éléments identiques ou techniquement équivalents. Les termes « supérieur », « médian » et « inférieur » se réfèrent au positionnement relatif en mode standard d'utilisation ou de montage. Les termes « longitudinal » et « transversal » qualifient des éléments s'étendant respectivement selon une direction donnée et selon un plan perpendiculaire à cette direction, en particulier « longitudinal » renvoie à l'axe de fuselage d'un avion.Identical reference signs, used in the various figures, refer to identical or technically equivalent elements. The terms "upper", "middle" and "lower" refer to relative positioning in standard mode of use or mounting. The terms "longitudinal" and "transverse" qualify the elements respectively extending in a given direction and in a plane perpendicular to this direction, in particular "longitudinal" refers to the axis of fuselage of an aircraft.

Les connecteurs terminaux 32, tel que celui illustré par les vues frontale et en coupes II-II et II'-II' des figures 2a à 2c, comportent une paroi supérieure 32s et une paroi inférieures 32i entre lesquelles s'étendent à partir d'un côté 32c et sur toute la longueur de ce côté, des alvéoles individuelles alignés 57. Chaque alvéole 57 est apte à recevoir une extrémité de conducteur pour être sertie sur toute sa longueur. Un chanfrein 57c est prévu à l'entrée de chaque alvéole 57 afin de faciliter l'insertion du conducteur et conserver la cohésion des brins d'aluminium des conducteurs 51 (figure 5) entre eux lors de l'insertion des conducteurs 51 dans leur alvéole individuelle. On évite ainsi qu'un ou plusieurs brins d'aluminium ne restent à l'extérieur de l'alvéole à sertir. Dans le cas des connecteurs terminaux 32, les alvéoles 57 sont des cavités borgnes.Terminal connectors 32, such as that illustrated by the front views and in sections II-II and II'-II 'of Figures 2a to 2c , comprise an upper wall 32s and a lower wall 32i between which extend from one side 32c and along the entire length of this side, aligned individual cells 57. Each cell 57 is adapted to receive a conductor end for be crimped along its entire length. A chamfer 57c is provided at the entrance of each cell 57 to facilitate insertion of the conductor and maintain the cohesion of the aluminum strands of the conductors 51 ( figure 5 ) between them when inserting the conductors 51 into their individual cell. This avoids one or more Aluminum strands do not remain outside the crimp cell. In the case of the terminal connectors 32, the cells 57 are blind cavities.

Les connecteurs terminaux 32 sont raccordés aux pièces métalliques de support 11 et de traverse 14 (figure 1) de retour de courant par des fixations et des interfaces appropriées. La plage de contact électrique 54c qui entoure l'ouverture de fixation 54 est étendue afin de ne pas excéder des limites déterminées d'échauffement par effet Joule.The end connectors 32 are connected to the metal support parts 11 and cross-member 14 ( figure 1 ) back current by appropriate fasteners and interfaces. The electrical contact area 54c surrounding the fixing opening 54 is extended so as not to exceed defined Joule heating limits.

Le connecteur terminal illustré possède un axe de symétrie longitudinal X'X avec une avancée 32a en pointe, l'ouverture 54 étant réalisé sensiblement au centre de cette extrémité. Une telle interface de fixation peut recevoir un soyage, un pliage selon un angle donné, etc. Selon d'autres variantes, l'interface peut être à déconnexion rapide, par ¼ de tour ou équivalent.The terminal connector illustrated has a longitudinal axis of symmetry X'X with a tip advanced 32a, the opening 54 being made substantially in the center of this end. Such a fixing interface can receive a jogging, folding at a given angle, etc. According to other variants, the interface can be quick disconnect, by ¼ turn or equivalent.

Dans les exemples schématiques illustrés par les vues latérales et supérieures des figures 3a à 3c, les raccords sont à démontage rapide, de façon à réaliser une connexion/déconnexion par exemple en moins de 10 secondes. Les raccords R1, R2, R3, se composent alors de deux parties: une partie 2 du raccord, non démontable du connecteur terminal 32, remplace le système de connexion par ouverture 54. La géométrie de la pointe 32a (figure 2a) est modifiée localement pour adapter cette partie 2 du système de connexion/déconnexion rapide. La partie complémentaire 3, montée par des moyens 4 de vissage ou de clipsage sur la partie 2, est ensuite installée sur un élément de retour de courant 10 (figure 1). Dans un autre mode de réalisation, un premier tronçon de cette partie 2, est constitué par exemple par un câble 2c (figure 3c) et peut être monté par des moyens de sertissage 4c sur le connecteur terminal 32In the schematic examples illustrated by the lateral and superior views of Figures 3a to 3c , the connections are quick disassembly, so as to make a connection / disconnection for example in less than 10 seconds. The connections R1, R2, R3, then consist of two parts: a part 2 of the connector, not removable of the terminal connector 32, replaces the opening connection system 54. The geometry of the tip 32a ( figure 2a ) is modified locally to adapt this part 2 of the quick connect / disconnect system. The complementary part 3, mounted by screwing or clipping means 4 on the part 2, is then installed on a current return element 10 ( figure 1 ). In another embodiment, a first section of this part 2 is constituted for example by a cable 2c ( figure 3c ) and can be mounted by crimping means 4c on the terminal connector 32

S'agissant des connecteurs intermédiaires 34, des vues frontale et en coupes IV-IV et IV'-IV' sont illustrées respectivement par les figures 4a à 4c.With regard to the intermediate connectors 34, front and section views IV-IV and IV'-IV 'are respectively illustrated by the Figures 4a to 4c .

Ce connecteur comporte des parois supérieure 34s et inférieure 34i entre lesquelles s'étendent des alvéoles 58 sur toute la longueur des côtés 34c. Les alvéoles 58 sont constituées par des cavités longitudinalement traversantes qui percent le connecteur 34 de part en part. Ces cavités sont terminées par des chanfreins 58c facilitant l'accès des conducteurs dans les alvéoles 58.This connector has upper 34s and lower walls 34i between which there are cavities 58 along the entire length of the sides 34c. The cells 58 are constituted by longitudinally through cavities which pierce the connector 34 from one side to the other. These cavities are terminated by chamfers 58c facilitating the access of the conductors to the cells 58.

Les conducteurs 51, tels que celui représenté en coupe en figure 5, sont insérés individuellement dans les alvéoles 58 sans coupure, ce qui entraîne un gain de résistance de contact et une augmentation de la fiabilité de la liaison. Les conducteurs sont sertis dans les alvéoles dans des zones de sertissage Zs formées à proximité de l'un et/ou l'autre des côtés 34c du connecteur 34.The conductors 51, such as that shown in section in figure 5 , are inserted individually into the cells 58 without interruption, which results in a gain in contact resistance and an increase in the reliability of the connection. The conductors are crimped into the cells in crimping zones Zs formed near one and / or the other of the sides 34c of the connector 34.

L'interface du connecteur intermédiaire 34 avec les pièces métalliques de l'avion est adaptée aux besoins spécifiques. Ainsi, les connecteurs intermédiaires 34 peuvent présenter une seule avancée 35 avec une ouverture de fixation 56 ou, comme représenté, deux avancées 35 symétriques par rapport à l'axe longitudinal X'X, avec deux ouvertures de fixation 56. L'étendue de la plage de contact électrique 56a qui entoure l'ouverture de fixation 56 est optimisée en fonction du dégagement thermique et les fixations sont effectuées par vissage ou équivalent à travers les ouvertures 56.The interface of the intermediate connector 34 with the metal parts of the aircraft is adapted to the specific needs. Thus, the intermediate connectors 34 may have a single advance 35 with an attachment opening 56 or, as shown, two symmetrical advances 35 with respect to the longitudinal axis X'X, with two attachment apertures 56. The extent of the The electrical contact pad 56a surrounding the fixing opening 56 is optimized according to the thermal clearance and the fastenings are made by screwing or equivalent through the openings 56.

Comme pour les connecteurs terminaux, cette interface peut recevoir un soyage, un pliage à un angle donné ou équivalent. Egalement, d'autres variantes de cette interface peuvent être à déconnexion rapide, ¼ de tour ou équivalent. Avantageusement, ces connecteurs intermédiaires 34 permettent de connecter un câble de retour de courant d'un équipement au plus près de cet équipement, en formant un « té » de dérivation, par exemple à l'aide des raccords R1 à R3 illustrés par les figures 3a à 3c.As for the terminal connectors, this interface can receive a jig, a folding at a given angle or equivalent. Also, other variants of this interface can be quick disconnect, ¼ turn or equivalent. Advantageously, these intermediate connectors 34 make it possible to connect a current return cable of a device as close as possible to this equipment, forming a bypass tee, for example using the connections R1 to R3 illustrated by the Figures 3a to 3c .

Ainsi, l'interface du connecteur intermédiaire multipoints 34 avec la nappe plate est réalisée par insertion et sertissage de chaque conducteur dans une alvéole individuelle 58. Chaque conducteur 51 est composé de brins d'aluminium élémentaires 55 groupés en toron, comme illustré par la vue en coupe de la figure 5. Le conducteur présenté en exemple est une jauge calibrée AWG12 qui possède un diamètre extérieur d'environ 2mm.Thus, the interface of the multipoint intermediate connector 34 with the flat sheet is made by insertion and crimping of each conductor in an individual cell 58. Each conductor 51 is composed of elementary aluminum strands 55 grouped in strand, as illustrated by the view in section of the figure 5 . The example conductor is a calibrated AWG12 gauge that has an outside diameter of about 2mm.

Lors de la mise en place d'une nappe donnée, des outillages dédiés permettent de découper et de sertir chaque portion de nappe dans les connecteurs 32 et 34 pour réaliser le harnais souhaité. La connectique du harnais est ainsi adaptable en fonction de la configuration et des dimensions de l'installation à réaliser. En particulier, cette connectique peut s'adapter à la résistivité de la liaison à connecter, du courant de transit ou de surintensité, du nombre de points de fixation et de l'encombrement de l'installation ainsi que du nombre de pièces à raccorder.During the establishment of a given sheet, dedicated tools are used to cut and crimp each portion of the sheet in the connectors 32 and 34 to achieve the desired harness. The connector harness is thus adaptable depending on the configuration and dimensions of the installation to achieve. In particular, this connection can adapt to the resistivity of the connection to be connected, the transit current or overcurrent, the number of fixing points and the size of the installation as well as the number of parts to be connected.

La géométrie des connecteurs permet de réduire leur masse totale au strict minimum. En particulier, l'épaisseur des connecteurs 32 et 34 entre leurs parois est juste au diamètre maximum des conducteurs 51 tout en restant suffisante pour conserver une robustesse compatible avec la présence des alvéoles.The geometry of the connectors makes it possible to reduce their total mass to the strict minimum. In particular, the thickness of the connectors 32 and 34 between their walls is just the maximum diameter of the conductors 51 while remaining sufficient to maintain robustness compatible with the presence of the cells.

Les connecteurs sont avantageusement constitués par un alliage d'aluminium pour usage électrique, et présentent donc une faible résistivité. Un traitement de surface des connecteurs (nickelage, étamage,...) est de préférence réalisée pour que cette surface soit peu résistive et forme des liaisons électriques en interface avec un ajustement serré par frettage avec les supports 11, 12, et les traverses 14, 16 devant être raccordés (cf. figure 1). Ainsi, les risques de corrosion galvanique au niveau de la liaison électrique sont éliminés.The connectors are advantageously constituted by an aluminum alloy for electrical use, and therefore have a low resistivity. A surface treatment of the connectors (nickel plating, tinning, etc.) is preferably carried out so that this surface is not very resistive and forms electrical connections interfaced with a tight fit by hooping with the supports 11, 12, and crosspieces 14. , 16 to be connected (cf. figure 1 ). Thus, the risks of galvanic corrosion at the electrical connection are eliminated.

La nappe est également modulaire afin de faciliter son adaptabilité : le nombre de conducteurs 51, leur section, les dimensions des connecteurs, le nombre de connecteurs intermédiaires, l'épaisseur et la largeur de la nappe sont ajustables. De plus, les interfaces électriques et mécaniques de raccordement sont adaptables à la pièce à raccorder.The sheet is also modular in order to facilitate its adaptability: the number of conductors 51, their section, the dimensions of the connectors, the number of intermediate connectors, the thickness and the width of the sheet are adjustable. In addition, the electrical and mechanical interfaces of connection are adaptable to the part to be connected.

La finition au niveau des connecteurs d'extrémité 32 et intermédiaires 34 est assurée par des tronçons de gaine polyoléfine thermo-rétractable ou équivalent. Cette enveloppe externe de finition rétreinte, à cheval entre chaque connecteur et la nappe plate, protège ainsi mécaniquement les sertissages et la sortie des conducteurs en recouvrant complètement cette interface connecteurs/conducteurs. Cette enveloppe externe de finition est, dans un autre exemple, réalisée par un surmoulage localisé, basse ou haute pression.The finish at the end connectors 32 and intermediate 34 is provided by sections of thermo-shrinkable polyolefin sheath or equivalent. This shrink-wrapped external envelope, straddling each connector and the flat sheet, thus mechanically protects the crimps and the output of the conductors by completely covering this interface connectors / conductors. This outer envelope of finishing is, in another example, carried out by a local overmoulding, low or high pressure.

Concernant plus précisément le sertissage des conducteurs 51 dans chaque alvéole de connecteur, celui-ci est réalisé par un outillage dédié. Selon l'invention, un tel outillage exerce une pression simultanée et uniforme sur les parois 32s et 32i des connecteurs terminaux 32 (ou entre les parois 34s et 34i des connecteurs intermédiaires 34), afin d'optimiser la connectique en minimisant la déformation plastique et le déplacement de la matière des connecteurs. Avantageusement, la maîtrise de la pression de sertissage ne provoque pas de crique dans le connecteur 32.Regarding more precisely the crimping of the conductors 51 in each connector socket, it is made by a dedicated tool. According to the invention, such a tool exerts a simultaneous and uniform pressure on the walls 32s and 32i of the end connectors 32 (or between the walls 34s and 34i of the intermediate connectors 34), in order to optimize the connection by minimizing the plastic deformation and the displacement of the material of the connectors. Advantageously, control of the crimping pressure does not cause crack in the connector 32.

Le sertissage de toutes les alvéoles 57 est réalisé simultanément et en une seule opération. Le sertissage comprime et déforme les brins individuels des conducteurs 51 mais ne change pas la section équivalente de matière conductrice des conducteurs.The crimping of all the cells 57 is performed simultaneously and in a single operation. The crimping compresses and deforms the individual strands of the conductors 51, but does not change the equivalent section of conductive material of the conductors.

La longueur de sertissage élémentaire est telle que la force de traction qu'il faut exercer sur un conducteur 51 pour le faire glisser ou l'arracher de son sertissage est supérieure à la limite élastique de ce conducteur.The elementary crimping length is such that the pulling force that must be exerted on a conductor 51 to slide or tear it from its crimping is greater than the elastic limit of this conductor.

Avantageusement, les conducteurs ne sont pas détoronnés avant sertissage. La résistance électrique d'un sertissage élémentaire est alors inférieure ou égale à la résistance électrique de la longueur de conducteur équivalente à la longueur du sertissage.Advantageously, the drivers are not uncracked before crimping. The electrical resistance of an elemental crimp is then less than or equal to the electrical resistance of the length of conductor equivalent to the length of the crimping.

Le traitement de surface adéquat des conducteurs 51 - par nickelage, étamage, argenture ou équivalent - permet une compatibilité électrochimique avec celui des connecteurs. Et les traitements de surfaces ne sont pas détruits par le sertissage.The adequate surface treatment of the conductors 51 - by nickel plating, tin plating, silver plating or the like - allows electrochemical compatibility with that of the connectors. And the surface treatments are not destroyed by crimping.

En référence aux vues frontale et en coupe des figures 6a et 6b, un exemple d'outil de sertissage 21 selon l'invention comporte deux coques, une coque dite supérieure 21s et une coque dite inférieure 21i. Chaque coque se compose d'une paroi principale P1 formant une face interne F1 et de bords B1 d'extrémité rabattus (au moins sur une coque) perpendiculairement à la paroi principale P1 de sorte à définir un espace interne E1. La face interne F1 de la paroi supérieure 21s est munie d'une nervure transversale N1. En préparation du sertissage, le connecteur 32 est introduit dans l'espace E1 de sorte que les coques 21 s et 21i sont disposées de part et d'autre des parois 32s et 32i du connecteur 32 à sertir, un connecteur terminal dans l'exemple.With reference to frontal and section views of Figures 6a and 6b an example of crimping tool 21 according to the invention comprises two shells, a so-called upper shell 21s and a so-called lower shell 21i. Each shell consists of a main wall P1 forming an internal face F1 and end edges B1 folded (at least on a shell) perpendicularly to the main wall P1 so as to define an internal space E1. The inner face F1 of the upper wall 21s is provided with a transverse rib N1. In preparation for crimping, the connector 32 is inserted into the space E1 so that the shells 21s and 21i are disposed on either side of the walls 32s and 32i of the connector 32 to be crimped, a terminal connector in the example .

La nervure N1 de la coque 21s, positionnée transversalement, se situe approximativement à mi-chemin de la portion 51 p des conducteurs 51 située dans les alvéoles 57. Ce positionnement est également adapté pour sertir les conducteurs dans un connecteur intermédiaire selon l'invention.The rib N1 of the shell 21s, positioned transversely, is located approximately midway of the portion 51 p of the conductors 51 located in the cells 57. This positioning is also adapted to crimp the conductors in an intermediate connector according to the invention.

Lors du sertissage, une même pression Ps est exercée sur chaque coque 21 s et 21 i de l'outil 21, de sorte à rapprocher les deux coques 21 s et 21 i jusqu'au contact des bords B1, comme illustré par les figures 6c et 6d. La nervure N1 pénètre uniformément et simultanément dans la paroi 32s du connecteur 32, forme une rainure cylindrique transversale Rc dans cette paroi 32s et, par transfert de charge, comprime et déforme les conducteurs 51.During crimping, the same pressure Ps is exerted on each shell 21 s and 21 i of the tool 21, so as to bring the two shells 21 s and 21 i until the contact edges B1, as illustrated by the Figures 6c and 6d . The rib N1 penetrates uniformly and simultaneously into the wall 32s of the connector 32, forms a transverse cylindrical groove Rc in this wall 32s and, by charge transfer, compresses and deforms the conductors 51.

Selon un autre exemple d'outil de sertissage, en référence aux figures en perspective 7a et 7b, la coque supérieure 22s de l'outil 22 possède, comme précédemment, une nervure transversale N1. La face interne F2 de la coque inférieure 22i possède deux nervures transversales N2 et N3. Dans ces conditions, lors du sertissage des conducteurs 51 d'un connecteur 32, comme illustré plus précisément par les figures 7c et 7d, la nervure N1 se trouve intercalée entre les nervures N2 et N3. L'exercice des pressions Ps sur les coques 22s et 22i provoque une pénétration uniforme et simultanée des nervures N1 à N3 dans les parois 32s et 32i du connecteur 32.According to another example of crimping tool, with reference to the perspective figures 7a and 7b, the upper shell 22s of the tool 22 has, as previously, a transverse rib N1. The inner face F2 of the lower shell 22i has two transverse ribs N2 and N3. Under these conditions, during the crimping of the conductors 51 of a connector 32, as illustrated more precisely by the Figures 7c and 7d , the rib N1 is interposed between the ribs N2 and N3. The exercise of the pressures Ps on the shells 22s and 22i causes a uniform and simultaneous penetration of the ribs N1 to N3 in the walls 32s and 32i of the connector 32.

Comme illustré par les vues en perspective et en coupe du connecteur 32 sur les figures 8a et 8b, des rainures Rc se forment alors sur les parois 32s et 32i du connecteur 32. Pour mieux visualiser les deux rainures parallèles formées sur la paroi inférieure 32i, le connecteur 32 est présenté à l'envers sur ces figures 8a et 8b par rapport à l'usage standard. Par transfert de charge à partir des rainures Rc, les brins 55 des conducteurs 51 sont comprimés et déformés alternativement de sorte à présenter une forme d'ondulation.As illustrated by the perspective and sectional views of connector 32 on the Figures 8a and 8b , grooves Rc are then formed on the walls 32s and 32i of the connector 32. To better visualize the two parallel grooves formed on the bottom wall 32i, the connector 32 is presented upside down on these Figures 8a and 8b compared to standard use. By charge transfer from the grooves Rc, the strands 55 of the conductors 51 are compressed and deformed alternately so as to have a waveform.

Après sertissage, les performances électriques et mécaniques sont atteintes :

  • la valeur de résistance électrique d'un sertissage est strictement inférieure à la valeur de résistance électrique d'une longueur de conducteur équivalente à la longueur du sertissage (évoqué plus haut) ;
  • dans un connecteur donné, les résistances électriques des sertissages sont toutes situées dans une plage de variation des unes par rapport aux autres de l'ordre de 5% environ, ce qui permet d'éviter la circulation de courants inhomogènes dans les conducteurs 51;
  • la valeur de la résistance à la traction est au moins égale à la valeur de la limite élastique du conducteur 51.
After crimping, the electrical and mechanical performances are reached:
  • the electrical resistance value of a crimp is strictly less than the electrical resistance value of a conductor length equivalent to the length of crimping (mentioned above);
  • in a given connector, the electrical resistances of the crimps are all situated in a range of variation relative to each other of about 5%, which makes it possible to avoid the circulation of inhomogeneous currents in the conductors 51;
  • the value of the tensile strength is at least equal to the value of the elastic limit of the conductor 51.

L'invention n'est pas limitée aux exemples de réalisation décrits et représentés. Il est par exemple possible de prévoir des connecteurs intermédiaires hybrides constitués en partie par des cavités traversantes et par des alvéoles borgnes pour loger les conducteurs. En outre, les conducteurs sont de préférence en alliage d'aluminium mais pourraient également être éventuellement en alliage de cuivre ou de titane.The invention is not limited to the embodiments described and shown. It is for example possible to provide hybrid intermediate connectors formed in part by through cavities and by blind cells to house the conductors. In addition, the conductors are preferably aluminum alloy but could also be optionally copper or titanium alloy.

Claims (10)

  1. Method for connecting by means of crimping electrical conductors (51) in connectors (32, 34) for equipotential connection of a planar and flexible layer which is formed by these conductors, to metal components (11, 12, 14), characterised in that these electrical conductors (51) are positioned in individual longitudinal and parallel cells (57, 58) which are formed between two planar walls (32s, 32i; 34s, 34i) of each connector (32, 34), in that these conductors (51) are then crimped in a crimping zone (Zs) by means of simultaneous transverse punching of at least one wall (32s, 32i; 34s, 34i) of a connector (32, 34), and in that this transverse punching forms at least one corresponding transverse groove line (Rc) on said at least one connector wall (32s, 32i; 34s, 34i) and, by means of load transfer, on each of the conductors (51).
  2. Connection method according to claim, 1, wherein the punching is carried out by uniform pressing (Ps) of a rib (N1, N2, N3) on at least one wall (32s, 32i; 34s, 34i) of the connector (32, 34).
  3. Connection method according to either of the preceding claims, wherein the punching is alternated so that the transverse grooves (Rc) are interleaved in order to form an undulating routing for the conductors (51) in the connectors (32, 34).
  4. Connection method according to any of the preceding claims, wherein the ribs (N1, N2, N3) and the corresponding grooves (Rc) are cylindrical.
  5. Crimping tool (21, 22) which is capable of implementing the method according to any of the preceding claims, characterised in that it comprises two shells (21s, 21i; 22s, 22i), each shell having a main wall (P1) which forms an inner face (F1) which is provided with at least one transverse rib (N1, N2, N3), each shell (21s, 21i; 22s, 22i) also having end edges (B1) which are folded over perpendicularly relative to the walls (P1) so as to define an inner space (E1) and in that, in this space (E1), a connector (32, 34) of conductors (51) which are arranged perpendicularly relative to the ribs (N1, N2, N3) is introduced.
  6. Crimping tool according to the preceding claim, characterised in that it comprises two ribs (N2, N3) on the inner face (F1) of a shell (21 s, 21 i; 22s, 22i) and a rib (N1) which is interleaved between the other two ribs (N2, N3) on the inner face (F1) of the other shell (21i, 21s; 22i, 22s) which is arranged opposite during the crimping operation.
  7. Multi-point modular connector (32, 34) for connecting a layer of parallel conductors (51) to a metal current return component (11, 12, 14), comprising internal longitudinal cells (57, 58) for accommodating the conductors, these cells (57, 58) being formed by two inner wall faces (32s, 32i; 34s, 34i) which extend longitudinally, characterized in that at least one crimping groove (Rc) of the conductors (51), formed on each of said conductors (51), extends transversely over at least one inner wall face (32s, 32i; 34s, 34i), and in that it also comprises means (2, 3, 4, 2c, 4c) for connection to metal current return components, these means being fixed at least at one opening (54, 56) which is formed in said walls (32s, 32i; 34s, 34i).
  8. Multi-point modular connector according to the preceding claim, wherein the connector is a terminal connector (32) in which blind cells (57) open at a transverse face (32c).
  9. Multi-point modular connector according to either claim 7 or claim 8, wherein the connector is an intermediate connector (34) in which the cells (58) are through-cells and open at the end at two transverse faces (34c).
  10. Connection wiring loom which is capable of connecting metal current return components (11, 12, 14), characterised in that it comprises parallel conductors (51) which form a planar and flexible layer, the conductors being crimped in accordance with the method according to any of claims 1 to 4, in terminal multi-point modular connectors (32) and intermediate multi-point modular connectors (34) according to any of claims 7 to 9 for connection to said metal components (11, 12, 14), and a protection casing which covers the connection between the layer and the connectors.
EP13728777.7A 2012-04-27 2013-04-18 Method for connecting the conductors of a flexible bonded (equipotential) connection layer, as well as crimping tool, connectors and wiring loom fitted with such connectors Active EP2842199B1 (en)

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FR1253935A FR2990071B1 (en) 2012-04-27 2012-04-27 METHOD FOR CONNECTING CONDUCTORS OF AN EQUIPOTENTIAL CONNECTING FLAP, AND CRIMPING TOOL, CONNECTORS, AND HARNESS EQUIPPED WITH SUCH CONNECTORS
PCT/FR2013/050865 WO2013160592A1 (en) 2012-04-27 2013-04-18 Method for connecting the conductors of a flexible bonded (equipotential) connection layer, as well as crimping tool, connectors and wiring loom fitted with such connectors

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CN104488144A (en) 2015-04-01
BR112014026571A2 (en) 2017-06-27
EP2842199A1 (en) 2015-03-04
FR2990071B1 (en) 2014-05-02
US9711925B2 (en) 2017-07-18
JP6662636B2 (en) 2020-03-11
BR112014026571B1 (en) 2021-07-13
RU2014146152A (en) 2016-06-20
FR2990071A1 (en) 2013-11-01
RU2614152C2 (en) 2017-03-23
JP2015518251A (en) 2015-06-25
CN104488144B (en) 2017-11-17
CA2871224A1 (en) 2013-10-31
US20150107893A1 (en) 2015-04-23
WO2013160592A1 (en) 2013-10-31
CA2871224C (en) 2021-02-09

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