EP3261182A1 - Ligne electrique - Google Patents

Ligne electrique Download PDF

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Publication number
EP3261182A1
EP3261182A1 EP16175804.0A EP16175804A EP3261182A1 EP 3261182 A1 EP3261182 A1 EP 3261182A1 EP 16175804 A EP16175804 A EP 16175804A EP 3261182 A1 EP3261182 A1 EP 3261182A1
Authority
EP
European Patent Office
Prior art keywords
section
cable
wires
crimping
connection line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16175804.0A
Other languages
German (de)
English (en)
Inventor
Laurent DELESCLUSE
Andreas MÜLLER
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.)
Delphi International Operations Luxembourg SARL
Original Assignee
Delphi International Operations Luxembourg SARL
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 Delphi International Operations Luxembourg SARL filed Critical Delphi International Operations Luxembourg SARL
Priority to EP16175804.0A priority Critical patent/EP3261182A1/fr
Priority to PCT/EP2017/065243 priority patent/WO2017220654A1/fr
Publication of EP3261182A1 publication Critical patent/EP3261182A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • H01R4/183—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 cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—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 cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—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 cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • 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
    • H01R43/05—Crimping apparatus or processes with wire-insulation stripping
    • 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

Definitions

  • the invention relates to an electrical connection line comprising an electrical cable with an aluminum or copper conductor and a cable lug with a deformable wire crimping section.
  • the invention further relates to a method for attaching the electrical cable to the cable lug.
  • Aluminum leads have the advantage over copper leads of being lighter and cheaper. Even if, compared to copper, worse electrical conductance requires a larger cross-section, usually outweigh the benefits of aluminum.
  • aluminum alloys with adapted properties are used. For small conductor cross-sections, both the mechanical and the electrical properties of the conductor material must be balanced when selecting the alloy. Alloys that are mechanically robust can be problematic during processing or electrical contacting. The combination of aluminum cables and a copper cable lug can, under certain conditions, cause effects that would not occur if only copper materials were used. When using aluminum cables with copper terminals, corrosion is another problem.
  • the object of the present invention is therefore to provide a lightweight electrical connection line which is mechanically robust and insensitive to corrosion. It is another object of the present invention to provide a method for attaching a low-profile aluminum cable to a cable lug.
  • An electrical connection line comprising a cable with a plurality of wires and one, the wires radially enclosing insulation.
  • the insulation is removed along an end portion.
  • a portion of the end portion is bent so that the end faces of the wires are aligned for insulation.
  • a cable lug having a contact portion and a wire crimping portion.
  • the wire crimping section is at least partially around the wires of the end section and the subsection the cable is crimped.
  • the end faces of the wires are inside the wire crimping section.
  • This electrical connection line can be made with conventional crimping tools and thus requires no conversion of existing tools or investment in new tools. Due to the presence of either one layer of cores, as in conventional crimp connections, or two layers, such as in regions of the inventive electrical connection line, different amounts of conductor material are present along the longitudinal axis of the wire crimping section. If these different amounts are pressed with the same crimp height, different degrees of compression of the conductor material result. By balancing the amount of conductor material, the connection properties between the electrical cable and the cable lug can be adjusted. The balancing of the properties of the connecting line is effected by the length of the bent wire part, as well as by the positioning of the wire end surfaces within the core crimping section. A subordinate role plays the arrangement the bent portion about the longitudinal axis of the cable within the Adercrimpabitess. Although primarily aluminum is mentioned here as a conductor material, advantageous effects are also observed when using copper as the conductor material.
  • the length of the subsection corresponds to one third of the length of the end section.
  • the end faces of the wires are in the middle of the core crimping section for most cable lugs. This construction makes it possible to optimize the wire crimping section in half for a good electrical contact and the other half for good pull-out forces.
  • the length of the subsection corresponds to 40% to 10% of the length of the end section.
  • desired combinations of electrical and mechanical properties can be created.
  • the plurality of wires in the section welded together.
  • the oxide layer is broken up.
  • the wire crimping section has a first crimping area and a second crimping area, wherein the crimping height of the crimping areas is substantially constant and the degree of crimping of the wires in the second crimping area is greater than the degree of crimping of the wires in the first crimping area.
  • the cable lug can be attached to the cable with conventional tools, which reduces costs.
  • the conductor cross section of the cable is in the range between 0.35 mm 2 to 2.5 mm 2 .
  • the wire crimping section preferably has depressions and / or elevations on the side facing the wires. At a high degree of compression, the conductor material is pressed into the embossing of the cable lug, whereby the oxide layer is removed and the contact is improved.
  • the wire crimping section has a coating with a tin and / or zinc alloy.
  • the bending region of the plurality of individual wires protrudes from the end of the wire crimping section facing the contact section.
  • the outstanding bending area with its rounded shape, can facilitate the insertion of the cable lug through seals and protect the opening of the seal from damage.
  • the wires are preferably precompacted in the partial area by ultrasonic welding.
  • the bent wires are welded together with the non-bent wires in the partial area. Welding serves to clean the multiplicity of wires and thus to increase the connectivity. For aluminum, the oxide layer is broken up.
  • the wire crimping section of the cable lug is deformed to a constant crimp height.
  • the wire crimping section receives a first crimping area and a second crimping area, wherein the degree of crimping of the wires in the second crimping area is greater than the degree of crimping of the wires in the first crimping area. This leads to improved connection properties of the crimped connection.
  • the cable is preferably positioned so that the end faces of the wires are inside the wire crimp section. This ensures that during pressing two areas with different degrees of compression are created.
  • Fig. 1A shows the end of a cable 10 in which the insulation 12 along an end portion 16 has been removed.
  • a plurality of wires 14 extend to the end of the cable.
  • the wires 14 have end surfaces 18 at their ends.
  • the cable is cut diagonally at its end.
  • the cable can just as well be cut straight.
  • Fig. 1B a portion 20 of the wires 14 is bent at an angle of 90 ° to the longitudinal axis of the cable 10.
  • Fig. 1C Part 20 was bent further, so that the end faces 18 of the wires 14 are aligned to the insulation 12 out.
  • Fig. 2A shows a prepared cable end with bent wires 14.
  • a cable lug 22 is positioned with its wire crimping portion 26 to the cable 10 so that the end surfaces 18 of the wires 14 are within the wire crimping portion.
  • the cable end is fastened to the cable lug 22 in this position.
  • the cable end is fastened by positioning it in the wire crimping section 26 between the crimped blades and bending the crimped blades around the wires 14.
  • Fig. 2B shows an electrical connection line with attached cable lug 22.
  • wires 14 are visible on both sides of the wire crimp section 26.
  • the wire crimping portion 26 or the dimensioning of the end portion 16 can be chosen so that no wires 14 are visible.
  • an insulation crimping section 28 is also shown, which, however, does not necessarily have to be present.
  • Fig. 3A shows the connection area between cable 10 and cable lug 22.
  • a section along the line 3B of this arrangement is in Fig. 3B shown.
  • the wire ends of the bent conductors 14 are located approximately in the middle of the longitudinal extent of the Adercrimpabitess 26.
  • the wires 14 of the bent-back portion 20 are aligned substantially parallel with the wires 14 of the non-bent end portion 16.
  • the core crimping section (26) is subdivided into a first crimping region 30 and a second crimping region 31 by this arrangement of the cores 14.
  • the first crimping region 30 has the simple number of cores 14 and the second crimping region 31 has twice the number of cores 14.
  • the core crimping section 26 is pressed with a constant crimp height, so that the degree of crimping in the second crimping region 31 is significantly higher than in the first crimping region 30.
  • Fig. 4A shows the same representation as Fig. 3B However, here cutting lines 4B and 4C are introduced, which extend transversely to the longitudinal axis of the cable lug 22 through the first crimping region 30 and through the second crimping region (31).
  • Fig. 4B shows a cross section through the first crimping region 30. Due to the only simple number of wires 14 of the wire crimping section 26 of the first crimping 30 is strongly rolled. The degree of compression is low. Due to the double number of wires 14 in the second crimping region 31, the wire crimping section 26 is not strongly rolled up. The degree of compression is much higher.
EP16175804.0A 2016-06-22 2016-06-22 Ligne electrique Withdrawn EP3261182A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16175804.0A EP3261182A1 (fr) 2016-06-22 2016-06-22 Ligne electrique
PCT/EP2017/065243 WO2017220654A1 (fr) 2016-06-22 2017-06-21 Ligne de connexion électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16175804.0A EP3261182A1 (fr) 2016-06-22 2016-06-22 Ligne electrique

Publications (1)

Publication Number Publication Date
EP3261182A1 true EP3261182A1 (fr) 2017-12-27

Family

ID=56194375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16175804.0A Withdrawn EP3261182A1 (fr) 2016-06-22 2016-06-22 Ligne electrique

Country Status (2)

Country Link
EP (1) EP3261182A1 (fr)
WO (1) WO2017220654A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050227550A1 (en) * 2004-04-09 2005-10-13 Yazaki Corporation Wire end portion-press fastening structure
EP2006963A1 (fr) 2007-05-16 2008-12-24 Delphi Technologies, Inc. Procédé de fixation d'une cosse et dispositif de boucle de câble
JP2009283458A (ja) * 2008-04-23 2009-12-03 Fujikura Ltd 圧着接続構造
JP2010146903A (ja) * 2008-12-19 2010-07-01 Autonetworks Technologies Ltd 端子金具付き電線

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050227550A1 (en) * 2004-04-09 2005-10-13 Yazaki Corporation Wire end portion-press fastening structure
EP2006963A1 (fr) 2007-05-16 2008-12-24 Delphi Technologies, Inc. Procédé de fixation d'une cosse et dispositif de boucle de câble
JP2009283458A (ja) * 2008-04-23 2009-12-03 Fujikura Ltd 圧着接続構造
JP2010146903A (ja) * 2008-12-19 2010-07-01 Autonetworks Technologies Ltd 端子金具付き電線

Also Published As

Publication number Publication date
WO2017220654A1 (fr) 2017-12-28

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