EP2887459B1 - Procédé de liaison électrique d'un conducteur à base d'aluminium avec une pièce de contact - Google Patents

Procédé de liaison électrique d'un conducteur à base d'aluminium avec une pièce de contact Download PDF

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Publication number
EP2887459B1
EP2887459B1 EP13306745.4A EP13306745A EP2887459B1 EP 2887459 B1 EP2887459 B1 EP 2887459B1 EP 13306745 A EP13306745 A EP 13306745A EP 2887459 B1 EP2887459 B1 EP 2887459B1
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EP
European Patent Office
Prior art keywords
conductor
contact part
base
face
contact
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
EP13306745.4A
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German (de)
English (en)
Other versions
EP2887459A1 (fr
Inventor
Helmut Steinberg
Udo Mayer
Gerhard Lindner
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.)
Nexans SA
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Nexans SA
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Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to ES13306745.4T priority Critical patent/ES2657835T3/es
Priority to EP13306745.4A priority patent/EP2887459B1/fr
Publication of EP2887459A1 publication Critical patent/EP2887459A1/fr
Application granted granted Critical
Publication of EP2887459B1 publication Critical patent/EP2887459B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R4/625—Soldered or welded connections
    • 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
    • H01R4/187—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 combined with soldering or welding
    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/027—Soldered or welded connections comprising means for positioning or holding the parts to be soldered or welded
    • 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
    • H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact
    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0263—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for positioning or holding parts during soldering or welding process

Definitions

  • the invention relates to a method for electrically connecting an aluminum-based conductor with a contact part, with which a cap-like contact part, which has a bottom and a connected thereto and projecting from this cylindrical sleeve, is plugged onto the conductor, that the end face of the conductor rests on the bottom of the contact part.
  • the electrical conductors are in most cases flexible aluminum insulated stranded conductors, i. consisting of aluminum or an aluminum alloy.
  • Aluminum is increasingly being used in automobiles and aircraft for cost and weight reasons, with the lower electrical conductivity of the aluminum to copper being irrelevant for most applications.
  • the contact parts based on copper are made of copper or a copper alloy, for example brass, wherein the contact parts coated, for example, tinned, can be.
  • the contact parts can be welded, for example, with a stripped conductor end.
  • the electrical conductor and the contact element are positively and / or cohesively connected to each other.
  • the EP 1 032 077 B1 describes a method for connecting an aluminum cable, in particular a stranded conductor, with a copper-based connector.
  • a sleeve made of aluminum is applied to the stripped end of the conductor, which compresses the individual wires and approaches each other to obtain a metallic surface on the front side of the cable.
  • the front side is then butt welded to the terminal part, wherein the oxide layer is removed at the end face.
  • the WO 2010/094005 A1 describes a sleeve-like cable lug whose inner wall is provided with projections. A stripped end of an aluminum cable is inserted into the cable lug and crimped with this for detection. The projections should break up the oxide layer on the conductor.
  • the US Pat. No. 3,831,132 describes a cable lug which is crimped to a stripped cable end.
  • the cable lug is partially designed on its inside with a metal sheet which is provided with surface irregularities. These surface irregularities are pressed into the aluminum conductors of the cable during crimping to break up the oxide film.
  • the invention has for its object to provide a method for electrically connecting an aluminum-based conductor with a contact part, through which an effective, at least the entire cross section of the aluminum conductor detected electrically conductive connection to the contact part can be achieved.
  • the inventive method allows a solid mechanical and electrical connection between the conductor and the contact part in simple, inexpensive work steps.
  • the voltage applied to the conductor sleeve of the contact part the projections of the sleeve are pressed into the outside of the conductor so that the outer oxide layer, which may have formed on the aluminum, is destroyed.
  • an electrical connection between the conductor and the contact part is ensured not only via the end face of the conductor but also via its side surface.
  • FIG. 1 shows the contact part 1 a first stable state in a perspective and a longitudinal sectional view.
  • the first stable state corresponds to an open state, in which the contact part 1 can be easily attached to the conductor.
  • Fig. 2 shows the contact part 1 in a second stable state in a perspective and a longitudinal sectional view.
  • the second stable state corresponds to a closed state in which the contact part 1 is fixedly connected on the conductor.
  • the cap-like contact part 1 has a bottom 2 and connected to the bottom 2 and projecting from this, cylindrical sleeve 3.
  • the cylindrical sleeve 3 consists of a plurality of individual, projecting from the bottom 2 flaps 4.
  • the flaps 4 each have at their opposite ends of the bottom on a radially inwardly facing projection 5.
  • the individual projections 5 form a closed ring, as in Fig. 2 shown.
  • the contact part 1 also has a connecting element 6, by means of which the conductor connected to the contact part 1 can be electrically connected to actuators, sensors, control elements, etc.
  • the contact part 1 is advantageously made of two different materials.
  • the connecting element 6 is preferably made of copper or of a copper alloy.
  • the bottom 2 and the sleeve 3 are advantageously made of a metal with suitable for the two stable states of the contact part 1 mechanical properties, such as spring steel.
  • the aluminum-based electrical conductor may be either a stranded conductor made up of a plurality of individual wires or a solid single conductor.
  • the conductor end of any existing layers, such as any existing insulation 8, must be exempted.
  • the cap-like contact part 1 is then placed so far on the conductor 7 until the end face 9 of the conductor 7 rests against the bottom 2 of the contact part 1.
  • this is in its first stable state (s. Fig. 1 ), so that the sleeve 3 is not applied to the conductor 7.
  • the bottom 2 of the contact part is curved inwards.
  • the contact part 1 in its second stable state (s. Fig. 2 ), so that the cylindrical sleeve 3 rests under tension on the outside of the conductor.
  • the projections 5 of the sleeve 3 are pressed into the outside of the conductor 7 and the end face 9 of the conductor 7 additionally pressed firmly against the bottom of the contact part. Any existing oxide layers on the conductor 7 are by in the Broken head outside pressed projections 5 so that they do not hinder the electrically conductive connection between the conductor and contact part.
  • the bottom 2 of the contact part 1 is now arched outwards. By the projections 5, the end face 9 of the conductor 7 is held in contact with the bottom 2 of the contact part 1. Finally, the bottom 2 of the contact part 1 and the end face 9 of the conductor 7 are firmly bonded together.
  • the transition between the first and the second stable state of the contact part 1 can for example be effected in that the flaps 4 of the sleeve 3 are compressed. This elastic deformation is reversed, for example, by pressing on the bottom 2 of the contact part 1.
  • the cohesive connection of the bottom of the contact part with the end face of the conductor can be effected by a suitable welding method, for example by friction stir welding.
  • friction stir welding the increased temperature required for welding the contact part and the conductor is generated by friction.
  • the aluminum or aluminum alloy of the conductor combines at a temperature below the melting temperature of the same temperature with the copper or copper alloy of the contact part cohesively.
  • the bottom of the contact part is not broken.
  • a tool 10 is applied to the contact part 1, which may be equipped on its end face with a pin-like projection 11.
  • the tool 10 is advantageously made of steel.
  • the tool 10 is moved in the direction of the arrow P and pressed with continued pressure against the bottom 2 of the contact part 1, so that the material thereof is heated by friction.
  • the heat is transferred from the contact part 1 to the front side of the conductor 7.
  • the material of the conductor 7 then connects cohesively with the contact part 1.
  • the protruding from the end face of the tool in the axial direction projection 11 presses the bottom 2 of the contact part 1 when it rests against the same, as it out Fig. 5 evident. This increases the contact surface between the conductor 7 and the contact part 1. Again, any existing oxide layers on the conductor 7 are broken during welding, so that they do not hinder the electrically conductive connection between the conductor 7 and contact part 1.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Claims (5)

  1. Procédé de liaison électrique d'un conducteur (7) à base d'aluminium avec une partie de contact (1), avec lequel une partie de contact (1) en forme de capuchon, qui comprend un fond (2) et un manchon cylindrique (3) relié avec celui-ci et éloigné de celui-ci, est enfiché sur le conducteur (7) de façon à ce que la face frontale (9) du conducteur (7) repose sur le fond (2) de la partie de contact (1), caractérisé en ce que
    - la partie de contact (1) présente un premier état stable, dans lequel la partie de contact (1) est enfiché sur le conducteur (7), sans que le manchon (3) s'appuie contre le conducteur (7),
    - le manchon cylindrique (3) est constitué de plusieurs clapets individuels (4), qui comprennent, au niveau des extrémités opposées au fond, des saillies (5) orientées vers l'intérieur dans la direction radiale et s'appuie, dans un deuxième état stable, sous tension, contre le côté extérieur du conducteur (7), les clapets (4) étant comprimés, les saillies (5) étant comprimées dans le côté extérieur du conducteur (7) et la face frontale (9) du conducteur (7) étant comprimée en outre fermement contre le fond (2) de la partie de contact (1) et
    - le fond (2) de la partie de contact (1) et la face frontale (9) du conducteur (7) sont ensuite soudés entre eux.
  2. Procédé selon la revendication 1, caractérisé en ce que la face frontale (9) du conducteur (7) et le fond (2) de la partie de contact (1) étant soudés entre eux par soudure par friction, le fond (2) de la partie de contact (1) n'étant pas percée.
  3. Procédé selon la revendication 2, caractérisé en ce qu'un outil rotatif est appuyé contre le fond (2) de la partie de contact (1) avec une pression constante jusqu'à ce que, du fait de la température plus élevée produite par la friction, le matériau du conducteur (7) soit ramolli de façon à ce qu'il soit relié par liaison de matière avec la partie de contact (1).
  4. Procédé selon la revendication 3, caractérisé en ce que l'outil comprend, au niveau de sa face frontale conçue pour s'appuyer contre la partie de contact (1), une saillie éloignée de celle-ci dans la direction axiale, qui comprime le fond (2) de la partie de contact (1) lors de l'appui contre celui-ci.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le conducteur (7) est un conducteur à torons constitué d'une pluralité de fils individuels.
EP13306745.4A 2013-12-17 2013-12-17 Procédé de liaison électrique d'un conducteur à base d'aluminium avec une pièce de contact Active EP2887459B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES13306745.4T ES2657835T3 (es) 2013-12-17 2013-12-17 Procedimiento para la conexión eléctrica de un conductor a base de aluminio con una pieza de contacto
EP13306745.4A EP2887459B1 (fr) 2013-12-17 2013-12-17 Procédé de liaison électrique d'un conducteur à base d'aluminium avec une pièce de contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13306745.4A EP2887459B1 (fr) 2013-12-17 2013-12-17 Procédé de liaison électrique d'un conducteur à base d'aluminium avec une pièce de contact

Publications (2)

Publication Number Publication Date
EP2887459A1 EP2887459A1 (fr) 2015-06-24
EP2887459B1 true EP2887459B1 (fr) 2017-11-15

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EP13306745.4A Active EP2887459B1 (fr) 2013-12-17 2013-12-17 Procédé de liaison électrique d'un conducteur à base d'aluminium avec une pièce de contact

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EP (1) EP2887459B1 (fr)
ES (1) ES2657835T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2734295T3 (es) * 2016-09-01 2019-12-05 Nexans Procedimiento para la conexión conductora de electricidad de conductores eléctricos
JP6974135B2 (ja) * 2017-11-24 2021-12-01 矢崎総業株式会社 端子接続方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2662934A2 (fr) * 2012-05-11 2013-11-13 Gebauer & Griller Kabelwerke Gesellschaft m.b.H. Liaison d'un câble électrique avec une pièce de contact

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955044A (en) * 1970-12-03 1976-05-04 Amp Incorporated Corrosion proof terminal for aluminum wire
US3831132A (en) * 1971-04-29 1974-08-20 Molex Inc Crimp terminal for aluminum wire
JPS521489A (en) * 1975-06-24 1977-01-07 Yazaki Corp Press-attached terminal for aluminium wire
DE19908031B4 (de) 1999-02-24 2009-08-13 Auto-Kabel Management Gmbh Verbindung eines elektrischen Aluminiumkabels mit einem aus Kupfer oder dergleichen Metall bestehenden Anschlußteil
US8519267B2 (en) * 2009-02-16 2013-08-27 Carlisle Interconnect Technologies, Inc. Terminal having integral oxide breaker
DE102011017070B4 (de) * 2011-04-14 2013-10-31 Auto-Kabel Management Gmbh Herstellung eines elektrischen Kabels sowie Verfahren zur Herstellung einer Verbindung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2662934A2 (fr) * 2012-05-11 2013-11-13 Gebauer & Griller Kabelwerke Gesellschaft m.b.H. Liaison d'un câble électrique avec une pièce de contact

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Publication number Publication date
ES2657835T3 (es) 2018-03-07
EP2887459A1 (fr) 2015-06-24

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