EP3340397B1 - Procédé de fixation d'un élément de contact à une extrémité d'un conducteur électrique - Google Patents

Procédé de fixation d'un élément de contact à une extrémité d'un conducteur électrique Download PDF

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Publication number
EP3340397B1
EP3340397B1 EP16306778.8A EP16306778A EP3340397B1 EP 3340397 B1 EP3340397 B1 EP 3340397B1 EP 16306778 A EP16306778 A EP 16306778A EP 3340397 B1 EP3340397 B1 EP 3340397B1
Authority
EP
European Patent Office
Prior art keywords
conductor
sleeve
contact element
soldered
layer
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
EP16306778.8A
Other languages
German (de)
English (en)
Other versions
EP3340397A1 (fr
Inventor
Michael Singer
Udo Mayer
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
Original Assignee
Nexans SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to EP16306778.8A priority Critical patent/EP3340397B1/fr
Priority to ES16306778T priority patent/ES2732905T3/es
Publication of EP3340397A1 publication Critical patent/EP3340397A1/fr
Application granted granted Critical
Publication of EP3340397B1 publication Critical patent/EP3340397B1/fr
Active legal-status Critical Current
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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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • 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
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H01R4/024—Soldered or welded connections between cables or wires and terminals comprising preapplied solder
    • 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
    • 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
    • H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end

Definitions

  • the invention relates to a method for fastening a contact element at the end of an electrical conductor according to the preamble of patent claim 1.
  • Such a method is for example from the DE 199 08 031 B4 out.
  • the sleeve may be made of aluminum-based metal, either aluminum or an aluminum alloy. This also applies to the individual wires of the conductor. In the following, only the material "aluminum" is considered.
  • Ladders made of aluminum are increasingly being used, in particular for reasons of weight and cost, as a replacement for copper conductors.
  • Main applications of such conductors are, for example, the automotive and aircraft technology.
  • the lower electrical conductivity of the aluminum over copper is irrelevant for most applications, as it may be compensated for by cross-sectional matching.
  • problems arise when attaching contact parts to the conductors since aluminum conductors are surrounded by an electrically very poorly conductive oxide layer. This deficiency is particularly noticeable in existing from a variety of individual wires, also referred to as stranded conductors conductors, each of which is surrounded by an unavoidable without special treatment oxide layer. This problem has long been known and described in numerous publications, of which three documents are mentioned below.
  • the US 5,517,755 A relates to a method for producing a connector for a stranded conductor.
  • the individual wires of the stranded conductor are made of copper.
  • the stranded conductor should be firmly connected to a component called a conductive surface.
  • a ring is wrapped around the end of the stranded conductor, through which the composite of the individual wires is compressed to a smaller diameter.
  • the individual wires, which protrude from the front end of the ring from the same, are separated at the level of the ring, so that they lie with the same in a plane.
  • the stranded conductor is finally inserted into a supply of soldering material on the surface and soldered to the surface.
  • a contact element is to be mounted electrically good conduction on a stranded wire of aluminum wires.
  • a tin-plated on the inside of metallic sleeve is first pushed onto the end of the stranded conductor.
  • the individual wires are then tinned or welded at their ends with each other and with the sleeve by means of ultrasound or inert gas welding.
  • the oxide layers surrounding the individual conductors should be broken up. This results in a cover-like tinning or welding at the end of the stranded conductor.
  • the contact element is pushed and pressed with the end of the stranded conductor.
  • the lid-like tinning or welding is excluded from the pressing.
  • the DE 103 46 160 B3 describes a method for contacting an aluminum conductor designed as a stranded conductor, in which a tinned on the inside, for example made of copper contact terminal is pushed onto the end of the aluminum conductor.
  • the tube-shaped contact terminal is tinned on the front side of the aluminum conductor by means of ultrasonic tinning together with the same or welded by means of a known welding process metallically with the same.
  • a supply of a contacting agent is applied to the end of a stranded conductor made of aluminum and heated at least to the region of its melting temperature.
  • a material connection between the stranded conductor and a simultaneously or subsequently deferred, pot-like contact element is to be produced via the contacting means for forming an electrical contact.
  • the contacting agent of the stranded conductor can be immersed in a tin bath. In this case, a part of the stranded conductor can be separated or cut off in the tin bath to form a fresh separating or cutting surface.
  • the contact element is pressed with zugentlastender effect around the stranded conductor.
  • the invention has for its object to simplify the initially described method.
  • solderable material used is, in particular and advantageously, tin.
  • the word “tin” is therefore used below, representing all usable solderable materials. Due to the mechanical processing of the end face of the conductor existing oxide layers are removed there, so that the tin applied to the end face is connected to the conductive material of all the individual wires of the conductor.
  • the mechanical processing of the end face of the conductor, for example by means of a milling cutter, and the coating of the same with the tin are carried out under protective gas. It may then be before coating the face with the tin will not form a new oxide layer on the face of the conductor. In this case, the tin can be applied for example by immersing the processed conductor end in a tin bath.
  • tin By the dipping process of the conductor end in a tin bath, tin likewise simultaneously adheres to the peripheral surface of the contact element or the sleeve.
  • the contact with an electrical contact to be attached to the contact element or the sleeve can be further improved.
  • Fig. 1 the end of an electrical line 1 is shown, which has an electrical conductor 3 surrounded by an insulation 2.
  • the conductor 3 is constructed from a plurality of individual wires 4, which are made of aluminum and are preferably stranded together. Such a conductor is also referred to as a stranded conductor.
  • the insulation 2 is removed at the end of the line 1, so that the conductor 3 is exposed.
  • a contact element sleeve 5 made of aluminum.
  • the sleeve 5 is pressed around the conductor 3 by mechanical processing, so that the individual wires 4 of the same are pressed together and the sleeve 5, the conductor 3 tightly and completely surrounds.
  • the pressing process is indicated by arrows 6. It is carried out so that the peripheral surface of the sleeve 5 is at least approximately cylindrical even after being pressed with the conductor 3.
  • the mechanical treatment of the conductor end with the described removal of a layer is carried out under a protective gas, so that no new oxide layer can form on the plane generated end face.
  • the conductor end thus treated is then placed in a tin bath 8 (keeping the protective gas atmosphere).
  • FIGS. 5 and 6 immersed). It is characterized on the flat end face of the conductor 3, a tin layer 9 is generated, which, as shown in FIG Fig. 4 extends beyond the peripheral surface of the sleeve 5.
  • the tin layer 9 has metallic and therefore electrically conductive contact with the aluminum of all individual conductors 4 of the conductor 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Claims (4)

  1. Procédé pour la fixation d'un élément de contact (5) à l'extrémité d'un conducteur électrique (3), qui est constitué d'une pluralité de fils individuels (4) en matériau contenant de l'aluminium câblés ensemble, avec lequel, autour de l'extrémité du conducteur, un manchon tubulaire (5), servant d'élément de contact et constitué de métal, est posé et comprimé avec le conducteur (3),
    caractérisé en ce que
    - après la fixation du manchon (5) en métal à base d'aluminium sur le conducteur (3), la face frontale de celui-ci et l'extrémité du manchon (5) sont usinés mécaniquement de façon à obtenir une surface plane continue,
    - sur la surface plane, immédiatement après l'usinage mécanique, une couche fermée (9) constituée d'un matériau brasable est appliquée, sur laquelle est monté un contact électrique, qui est relié avec la couche (9) par un apport de chaleur de façon à avoir un contact électro-conducteur avec l'ensemble de la section du conducteur et
    - la réalisation de la surface plane et l'application de la couche (9) en matériau brasable sont effectuées sous un gaz inerte.
  2. Procédé selon la revendication 1, caractérisé en ce que l'extrémité du conducteur est plongée, après la réalisation de la surface plane, dans un bain (8) de matériau brasable.
  3. Procédé selon la revendication 2, caractérisé en ce que l'extrémité du conducteur (3) est traité avec des ultrasons dans le bain (8) de matériau brasable.
  4. Procédé selon la revendication 1, caractérisé en ce que la couche (9) en matériau brasable est étendue jusqu'au-dessus de la surface circonférentielle du manchon (5).
EP16306778.8A 2016-12-22 2016-12-22 Procédé de fixation d'un élément de contact à une extrémité d'un conducteur électrique Active EP3340397B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16306778.8A EP3340397B1 (fr) 2016-12-22 2016-12-22 Procédé de fixation d'un élément de contact à une extrémité d'un conducteur électrique
ES16306778T ES2732905T3 (es) 2016-12-22 2016-12-22 Procedimiento para la fijación de un elemento de contacto en el extremo de un conductor eléctrico

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16306778.8A EP3340397B1 (fr) 2016-12-22 2016-12-22 Procédé de fixation d'un élément de contact à une extrémité d'un conducteur électrique

Publications (2)

Publication Number Publication Date
EP3340397A1 EP3340397A1 (fr) 2018-06-27
EP3340397B1 true EP3340397B1 (fr) 2019-04-03

Family

ID=57799512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16306778.8A Active EP3340397B1 (fr) 2016-12-22 2016-12-22 Procédé de fixation d'un élément de contact à une extrémité d'un conducteur électrique

Country Status (2)

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EP (1) EP3340397B1 (fr)
ES (1) ES2732905T3 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517755A (en) * 1994-04-08 1996-05-21 Reltec Corporation Method for making a litz wire connection
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
DE10346160B3 (de) 2002-05-25 2005-07-14 Feindrahtwerk Adolf Edelhoff Gmbh & Co. Verfahren und Verbindung zur Kontaktierung eines Aluminiumkabels
DE10223397B4 (de) 2003-10-04 2004-05-06 Feindrahtwerk Adolf Edelhoff Gmbh & Co Verfahren und Verbindung zur Kontaktierung eines Aluminiumkabels mit einer metallischen, verzinnten Kontaktklemme
DE10357048A1 (de) 2003-12-04 2005-07-21 Leoni Bordnetz-Systeme Gmbh & Co Kg Verfahren zum Herstellen einer elektrischen Verbindung zwischen einem Aluminiumleiter und einem Kontaktelement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3340397A1 (fr) 2018-06-27
ES2732905T3 (es) 2019-11-26

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