EP3379651A1 - Cosse - Google Patents

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Publication number
EP3379651A1
EP3379651A1 EP17305337.2A EP17305337A EP3379651A1 EP 3379651 A1 EP3379651 A1 EP 3379651A1 EP 17305337 A EP17305337 A EP 17305337A EP 3379651 A1 EP3379651 A1 EP 3379651A1
Authority
EP
European Patent Office
Prior art keywords
container
conductor
cable lug
lug
contact end
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.)
Granted
Application number
EP17305337.2A
Other languages
German (de)
English (en)
Other versions
EP3379651B1 (fr
Inventor
Marina Hoch
Michael Siller
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 EP17305337.2A priority Critical patent/EP3379651B1/fr
Publication of EP3379651A1 publication Critical patent/EP3379651A1/fr
Application granted granted Critical
Publication of EP3379651B1 publication Critical patent/EP3379651B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R4/10—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
    • 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
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • 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
    • H01R4/58—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

Definitions

  • the invention relates to a cable lug for connecting an insulated electrical conductor to a current-carrying element.
  • electrical conductors such as stranded conductors
  • contact elements made of electrically conductive material used. Electrical connections must be made between the voltage source, such as a battery, and actuators, sensors, controls, etc.
  • the mentioned current-carrying elements are, for example, the terminals of a battery or bolt in the engine compartment of a motor vehicle, to which electrical conductors must be connected by means of cable lugs. In most cases these are flexible insulated stranded conductors.
  • the cable lugs are metal elements which are adapted to be crimped and / or welded to a stripped conductor end. The conductor and the cable lugs are non-positively and / or materially connected to each other.
  • FIG. 1 An example of a known cable lug is in Fig. 1 shown.
  • the cable lug 1 has a contact end 2 for connection to the current-carrying element, to which the cable lug 1 is screwed, for example.
  • the cable lug 1 has a receptacle 3 for a stripped end of the electrical conductor.
  • the receptacle 3 has two pairs Crimpinatel 4, 5, which are crimped to the conductor end.
  • the conductor end can also be welded to the cable lug 1.
  • Electrical conductors made of copper are increasingly being replaced today by conductors made of aluminum or an aluminum alloy, in particular in the automotive industry.
  • Aluminum is a lighter and cheaper material with good electrical properties than copper.
  • the cable lugs are usually made of copper or a copper alloy.
  • the stripped aluminum conductor must be freed before the electrical connection of the non-conductive oxide layer which forms when aluminum contacts with oxygen. This can be effected, for example, by welding the aluminum conductor to the cable lug.
  • the welding has the further advantage that the conductor and the cable lug are materially interconnected, so that any cold flow of the aluminum has no effect on the quality of the connection.
  • the weld is usually located directly at the junction of the cable lug on the current-carrying element.
  • connection In particular for stranded conductors or battery cables with large cross sections, the mechanical stability of the connection with the cable lug is important.
  • the connection must be resistant to vibrations and possible cold flow of the aluminum.
  • the invention has for its object to provide a cable lug for an electrical conductor, which meets the requirements mentioned.
  • the cable lug according to the invention is a dimensionally stable, conductive contact element for the transmission of current through the connection of an electrical conductor with a current-carrying element.
  • the cable lug consists of two separate fasteners, namely the container and the contact end.
  • the container serves to accommodate the conductor, which is flexible and movable.
  • the contact end also referred to below as connection geometry, serves for fastening the cable lug to the current-carrying element, which is fixed.
  • the cable lug is designed so that the conductor can be fixed thereto as desired by crimping and welding.
  • connection geometry takes on the mounted by means of the cable lug connection between the electrical conductor and the current-carrying element all mechanical loads, such as vibrations or shocks in a motor vehicle.
  • the transition element between the contact end and the receptacle is a spatial and functional separation of these two fasteners. Due to this spatial and functional separation, the method of attachment of the conductor has no influence on the geometry or the mechanical structure of the connection geometry, since the force and heat during fastening of the conductor end does not take place in the area of the contact end.
  • the connection geometry can thus not be damaged. Therefore, it is ensured that the connection geometry permanently withstand mechanical stresses such as vibrations and shocks.
  • the cable lug according to the invention is therefore extremely robust, and the connection between the cable end and the cable lug is protected against mechanical stresses which may occur during use of the same, and particularly durable.
  • the cable lug can be designed so that the contacting geometry, i. the shape of the container, for the conductor always remains the same and the connection geometry of the application is carried out according to various types.
  • the transition element can take various forms, which ensures the spatial and functional separation.
  • the cable lug according to the invention can be advantageously used for conductors with large cross-sections, which must be contacted securely and consistently, for example in electric and hybrid vehicles and in mechanical and plant engineering.
  • the invention further relates to a compound of an electrical conductor and a cable lug with the said properties.
  • FIGS. 2 and 3 show a cable lug 10, 20 according to a first and a second embodiment of the invention.
  • the cable lug 10, 20 has a tubular or pot-like container 11, which is closed at its bottom 11a.
  • the container is substantially cylindrical.
  • the container 11 may also have a conical shape tapering towards the bottom 2a, or other shapes suitable for receiving the conductor.
  • the container 11 is to one side, the bottom 11 a opposite, open.
  • an edge 11b Surrounding the opening of the container 11 is an edge 11b. Continuously from the edge 11b, a flat contact end 12 is attached by means of a transition element 14. By means of the contact end 12, the cable lug 10, 20 with an electrical element, such as a battery terminal or the body of a motor vehicle, are connected. For example, the cable lug 10, 20 are screwed to the electrical element, for which purpose a screw can be inserted through a hole or a hole 13 in the contact end 12.
  • the transition element 14 has according to the first embodiment of Fig. 2 a bent in two directions form, which is followed by the contact end 12 consecutively.
  • the transition element 14 has the shape of a web.
  • the web consists of two flat parts 15, 16, which are connected by a ramp 17 with each other.
  • the contact end 12 is disposed at an approximately right angle to the flat parts 15, 16 opposite the container 11.
  • the shape of the transition element 14 can be adapted to the particular application requirements.
  • the transition element 14 ensures that the connection geometry, ie the contact end 12, spatially and functionally separated from themaschinetechniksgeometrie, ie the container 11. A main axis of the container (11) and the contact end lie in different planes. Due to the transition element 14, the contact end 12 does not directly connect continuously to the receptacle 11 for the conductor end. The contact end 12 and the receptacle 11 are not designed in one piece, as for example in the known cable lug Fig. 1 ,
  • the heat during welding is spatially independent of the contact end 12 of the cable lug.
  • the weld, which is located advantageously on the bottom 11 a of the container 11 is therefore force-decoupled from the connection geometry.
  • the container 11 is a receptacle for an electrical conductor to be connected to the cable lug 10, 20.
  • a cable lug 20 according to the invention mounted on a stripped end 30a of a conductor 30 is shown in FIG Fig. 4 shown.
  • the electrical conductor 30 is, for example, a stranded conductor made of aluminum.
  • the stranded conductor 30 consists of a plurality of individual electrical conductors and is surrounded by insulation.
  • the insulation consists for example of silicone or polyvinyl chloride.
  • the cable lug 10, 20 can also accommodate other types of electrical conductors, such as single conductors.
  • the stripped end 30 a of the stranded conductor 30 is inserted into the container 11 of the cable lug 20.
  • the stripped part 30 a of the conductor 30 protrudes slightly out of the container 11.
  • the container 11 may also completely cover the stripped end 30a.
  • the container 11 is crimped to the stripped end 30 a of the conductor 30.
  • the front side of the conductor 30 is welded to the bottom 11 a of the container 11 of the cable lug 20.
  • the end of the insulation of the conductor can also extend, depending on the application of the compound, a little way into the container 11.
  • the container 11 may be designed accordingly, for example with a conical shape.
  • a rotationally symmetrical sealing element may be arranged (not shown), which seals the stripped conductor end from the environment.
  • the container 11 preferably has a diameter that widens continuously or gradually from the bottom 11a to the edge 11b.
  • the cable lug 10, 20 consists for example of copper or a copper alloy. It can furthermore have a surface coating, for example made of nickel or tin.
  • the cable lug according to the invention can be manufactured in a few simple steps.
  • the container can be produced for example in a deep-drawing process. This process is independent of the connection geometry.
  • the inventive compound of the electrical conductor 30 with the cable lug 10, 20 can be prepared as follows.
  • the end 30 a of the conductor 30 is stripped and inserted into the container 11 of the cable lug 10, 20.
  • the front side of the conductor 30, which may consist of a plurality of strands, is guided to the bottom 11 a of the container 11.
  • the cable lug 10, 20 is then non-positively by crimping the wall of the container 11 with the stripped conductor end 30a connected.
  • the container 11 can be pressed at least partially into a hexagon.
  • the end face of the conductor 30 is welded to the bottom 11 a of the container 11.
  • the conductor 30 is now material and non-positively connected to the cable lug 10, 20.
  • a sealing element can be pressed into the upper region of the container 11. This method of making the connection may advantageously be done in an automated manufacturing process or integrated therein.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP17305337.2A 2017-03-24 2017-03-24 Cosse Active EP3379651B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17305337.2A EP3379651B1 (fr) 2017-03-24 2017-03-24 Cosse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17305337.2A EP3379651B1 (fr) 2017-03-24 2017-03-24 Cosse

Publications (2)

Publication Number Publication Date
EP3379651A1 true EP3379651A1 (fr) 2018-09-26
EP3379651B1 EP3379651B1 (fr) 2024-05-01

Family

ID=58464484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17305337.2A Active EP3379651B1 (fr) 2017-03-24 2017-03-24 Cosse

Country Status (1)

Country Link
EP (1) EP3379651B1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6538203B1 (en) * 1999-02-24 2003-03-25 Auto Kabel Managementgesellschaft Mbh Connection of an electrical aluminum cable with a connection piece of copper or similar material
US20130203303A1 (en) * 2010-10-13 2013-08-08 Gebauer & Griller Kabelwerke Gesellschaft M.B.H. Connection element for an electrical conductor
US20160199932A1 (en) * 2013-09-24 2016-07-14 Elringklinger Ag Method for establishing an electrically conductive connection between an electrical line and an electrically conductive component
US20170033473A1 (en) * 2012-11-23 2017-02-02 Nexans Method for electrically conductively connecting a contact piece to an electrical conductor, and corresponding arrangement
US20170069975A1 (en) * 2014-04-28 2017-03-09 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Crimped and welded connection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6538203B1 (en) * 1999-02-24 2003-03-25 Auto Kabel Managementgesellschaft Mbh Connection of an electrical aluminum cable with a connection piece of copper or similar material
US20130203303A1 (en) * 2010-10-13 2013-08-08 Gebauer & Griller Kabelwerke Gesellschaft M.B.H. Connection element for an electrical conductor
US20170033473A1 (en) * 2012-11-23 2017-02-02 Nexans Method for electrically conductively connecting a contact piece to an electrical conductor, and corresponding arrangement
US20160199932A1 (en) * 2013-09-24 2016-07-14 Elringklinger Ag Method for establishing an electrically conductive connection between an electrical line and an electrically conductive component
US20170069975A1 (en) * 2014-04-28 2017-03-09 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Crimped and welded connection

Also Published As

Publication number Publication date
EP3379651B1 (fr) 2024-05-01

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