EP3358678B1 - Procédé d'étanchéité d'une connexion électriquement conductrice - Google Patents

Procédé d'étanchéité d'une connexion électriquement conductrice Download PDF

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Publication number
EP3358678B1
EP3358678B1 EP17305139.2A EP17305139A EP3358678B1 EP 3358678 B1 EP3358678 B1 EP 3358678B1 EP 17305139 A EP17305139 A EP 17305139A EP 3358678 B1 EP3358678 B1 EP 3358678B1
Authority
EP
European Patent Office
Prior art keywords
sealing
conductor
sleeve
insulation
contact element
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
EP17305139.2A
Other languages
German (de)
English (en)
Other versions
EP3358678A1 (fr
Inventor
Gerhard Lindner
Christian Wittmann
Hermann Teicher
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 EP17305139.2A priority Critical patent/EP3358678B1/fr
Publication of EP3358678A1 publication Critical patent/EP3358678A1/fr
Application granted granted Critical
Publication of EP3358678B1 publication Critical patent/EP3358678B1/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
    • H01R4/10—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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • 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
    • H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
    • 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

Definitions

  • the invention relates to a method for sealing an electrically conductive connection between an electrical conductor and an electrical contact element having a crimp contact.
  • a large number of electrical conductors for example stranded conductors, and contact elements made of electrically conductive material connected to them are used. Electrical connections must be made between the voltage source, for example a battery, and actuators, sensors, control elements, etc.
  • the voltage source for example a battery
  • contact elements are elements made of metal, for example cable lugs, which are designed so that they can be crimped onto a stripped conductor end or welded to it.
  • the conductor and the contact element are non-positively and / or materially connected to one another.
  • connection point around the end of the insulation and the contact element must therefore be sealed media-tight.
  • shrink tubing is often brought around the connection point, for example in the DE 33 19880 A1 is described.
  • the inside of the shrink tube is provided with a hot-melt adhesive, for example, and then contracts around the connection point by heating.
  • the material connection between the shrink tube and the adhesive is not optimally resistant to strong temperature fluctuations to which the conductors and contact elements can be exposed.
  • the shrink tubing method also has the disadvantage that it is relatively time-consuming and expensive, since the shrink tubing with the adhesive must first be applied to seal the connection point and then a heating step must take place. The heating can also cause the problem that the adhesive runs and gets into areas that are outside the shrink tubing.
  • the WO2010 / 134450 A1 relates to a plug sealed against moisture, to which an insulated conductor is connected.
  • a contact element which is crimped onto the conductor, is connected to the conductor, which has been stripped of its insulation at its end.
  • a sealing body which surrounds the conductor and has sealing lips which engage in the insulation of the conductor.
  • the sealing body also has radially protruding sealing lips on its circumferential surface. In the assembly position, they rest against the inner wall of a connector housing which surrounds the end of the conductor and at a distance also the crimped contact element and from which the contact element protrudes.
  • the invention is based on the object of designing the method described at the outset in such a way that the crimping area is properly sealed, which can be produced in a few simple work steps.
  • an initially flowable and then solidified sealing material is applied to the area around the crimp contact.
  • a V-shaped joint that is created during crimping in the crimping area is then completely filled with the sealing material.
  • the crimping area forms a homogeneous, smooth, cylindrical sealing surface.
  • the elastic sealing sleeve is fixed on the sealing surface.
  • the sealing sleeve extends beyond the insulation at the end of the conductor. Due to the solidified sealing material, a homogeneous sealing surface is available for the sealing sleeve, on which the sealing sleeve rests against media all around under tension, without, for example, enclosing air chambers or free spaces.
  • the contact pressure in the sealing area is further increased by the crimp sleeve.
  • the flowable sealing material is preferably an adhesive. This can be applied in a flowable state around the crimping area and then solidified by curing.
  • the process can be carried out in a few simple processing steps.
  • the contact element and the seal can be mounted while the electrical conductor is being cut to length or attached.
  • the sealing material is applied in a defined amount. There is therefore no risk of sealing material flowing outside the desired areas. There is also no need for a separate, later process step for solidifying the sealing material.
  • the sealing sleeve has a length which is just sufficient to cover the crimping area and a small part of the insulation at the end of the conductor.
  • the method according to the invention relates to one in the Figs. 1 and 2
  • the stranded conductor 2 consists of a plurality of individual electrical conductors 3 and is surrounded by insulation 4.
  • the individual conductors 3 consist for example of aluminum or an alloy containing the same.
  • the insulation consists, for example, of silicone or polyvinyl chloride.
  • the stranded conductor 2 is stripped at its end 5.
  • the cable lug is crimped onto the end of the stranded conductor 2.
  • the crimping wings 8 and 9 are crimped around the electrical stranded conductor 2, while the crimp ring 10 is crimped around the end of the insulation 4 of the same.
  • the crimp ring 10 thus provides strain relief and kink protection for the individual electrical conductors 3.
  • the cable lug is made of copper, for example.
  • the crimping area created by the crimping is provided with a sealing material 7.
  • the sealing material is a material that is applied in a flowable state and then solidifies. In the example shown, the sealing material 7 is mainly in the area in which the two crimping wings 8 and 9 of the cable lug form an approximately V-shaped joint in the crimped state.
  • the joint is completely filled by the sealing material 7.
  • the crimping area is sealed by the sealing material.
  • the sealing material 7 can also be applied at other locations or around the entire circumference of the crimping area, if this is necessary in order to obtain the tubular smooth surface.
  • the sealing material 7 is advantageously an adhesive.
  • This can, for example, be a hot melt adhesive, an adhesive that cures by means of ultraviolet (UV) light, or a Be a two-part adhesive. The desired amount is applied to the crimping area in the flowable state.
  • the sealing material can also be another material that is initially flowable and then hardens, for example epoxy resin or silicone.
  • the tubular crimping area is provided with an elastic sealing sleeve 11.
  • the sealing sleeve 11 covers the entire crimping area up to the insulation 4 of the electrical conductor 2.
  • the elastic sealing sleeve 11 thus ensures the seal between the insulation 4 of the stranded conductor 2 and the crimping area of the contact element 6.
  • the sealing sleeve 11 has a tubular shape 11.
  • the elastic material is, for example, silicone.
  • the sealing sleeve 11 is dimensioned such that it rests against the crimping area under tension.
  • the sealing sleeve 11 can have sealing lips which are arranged around its inner diameter (not shown). The contact force and the hold of the sealing sleeve 11 on the crimping area can be further increased by the sealing lips.
  • a crimp sleeve 12 is also crimped around the sealing sleeve 11.
  • the crimping sleeve 12 has an interrupted ring shape, the interruption being closed or almost closed after crimping.
  • the crimp sleeve 12 and the sealing sleeve 11 can form a one-piece element in which the crimp sleeve is integrated into the sealing sleeve.
  • the crimp sleeve 12 can be embedded in the plastic material of the sealing sleeve.
  • the crimp sleeve 12 is advantageously made of metal.
  • the method for sealing the connection between the contact element and the electrical stranded conductor 2 can be carried out, for example, as follows: First, the sealing sleeve 11 is pushed onto the insulated stranded conductor 2. The end 5 of the electrical stranded conductor 2 is stripped and then 15 non-positively connected to the contact element 6 by crimping. The flowable sealing material 7, for example an adhesive, is then applied to the crimping area and, in particular, to the V-shaped joint created by the crimping. applied. The sealing material 7 is dosed in such a way that only the amount is applied that is necessary to create a tubular, smooth surface around the crimping area when the sealing material 7 has hardened or solidified. Finally, the sealing sleeve 11 is pushed onto the crimping area which has been smoothed in this way, so that the sealing sleeve 11 covers the entire crimping area up to the insulation 4 of the stranded conductor 2.
  • the flowable sealing material 7 for example an adhesive
  • the curing or solidification of the sealing material can take place by air drying, UV light or cooling before or during the assembly of the sealing sleeve 11.
  • the crimp sleeve 12 is then crimped around the sealing sleeve 11.
  • the crimp sleeve 12 can be pushed onto the sealing sleeve 11 after the above-mentioned work steps have been completed and crimped onto it.
  • the crimp sleeve 12 can be brought to the connection point together with the sealing sleeve 11, for example if the crimp sleeve 12 is already integrated into the sealing sleeve 11.

Landscapes

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

Claims (3)

  1. Procédé destiné à assurer l'étanchéité d'un raccordement électriquement conducteur entre un conducteur (2) électrique entouré d'une isolation (4) et un élément de contact (6) électrique, comportant un contact à sertir, avec lequel l'extrémité du conducteur (2) est libérée de son isolation (4) et avec lequel l'élément de contact (6) électrique est fixé par sertissage à l'extrémité (5) du conducteur (2),
    - un manchon isolant (10) élastique étant d'abord enfilé sur le conducteur (2) isolé,
    - l'extrémité du conducteur (2) électrique étant après cela dénudée et raccordée par liaison de force à l'élément de contact (6) par sertissage dans une zone de sertissage,
    - un matériau isolant (7) fluide étant ensuite appliqué autour de la zone de sertissage et se solidifiant de façon à produire une surface cylindrique homogène,
    - le manchon isolant (11) élastique étant ultérieurement enfiché sur la surface cylindrique du matériau isolant (7) de telle sorte que le manchon isolant (11) s'étend sur la surface cylindrique du matériau isolant (7) et sur l'isolation (4) du conducteur (2),
    - caractérisé en ce que,
    pour finir, un manchon à sertir (12) supplémentaire est serti autour du manchon isolant (11).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une colle est utilisée en tant que matériau isolant.
  3. Procédé selon la revendication 1, caractérisé en ce qu'il est utilisé un manchon isolant (10) qui comporte, sur sa surface intérieure, des lèvres d'étanchéité disposées radialement autour de son diamètre intérieur.
EP17305139.2A 2017-02-07 2017-02-07 Procédé d'étanchéité d'une connexion électriquement conductrice Active EP3358678B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17305139.2A EP3358678B1 (fr) 2017-02-07 2017-02-07 Procédé d'étanchéité d'une connexion électriquement conductrice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17305139.2A EP3358678B1 (fr) 2017-02-07 2017-02-07 Procédé d'étanchéité d'une connexion électriquement conductrice

Publications (2)

Publication Number Publication Date
EP3358678A1 EP3358678A1 (fr) 2018-08-08
EP3358678B1 true EP3358678B1 (fr) 2020-08-19

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Application Number Title Priority Date Filing Date
EP17305139.2A Active EP3358678B1 (fr) 2017-02-07 2017-02-07 Procédé d'étanchéité d'une connexion électriquement conductrice

Country Status (1)

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EP (1) EP3358678B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1001393A (en) * 1963-10-14 1965-08-18 Amp Inc Improvements in electrical connectors, electrical connections and methods of making electrical connections
DE3319880A1 (de) 1983-06-01 1984-12-06 Compakta Werke Baustoff-GmbH, 8225 Traunreut Elastische fluessigkeitsdichte verbindung einer metallkabelisolierung zur metallischen anschlussschelle
JP5394821B2 (ja) * 2009-05-22 2014-01-22 矢崎総業株式会社 防水栓、及び、該防水栓を有するコネクタ
JP5899593B2 (ja) * 2012-07-31 2016-04-06 矢崎総業株式会社 圧着端子付きアルミ電線
EP2793326B1 (fr) * 2013-04-16 2017-09-13 Delphi International Operations Luxembourg S.à r.l. Matrice de sertissage de joint étanche sur un contact

Non-Patent Citations (1)

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

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EP3358678A1 (fr) 2018-08-08

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