EP3010091B1 - Connecteur à fiches électrique - Google Patents

Connecteur à fiches électrique Download PDF

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Publication number
EP3010091B1
EP3010091B1 EP14189206.7A EP14189206A EP3010091B1 EP 3010091 B1 EP3010091 B1 EP 3010091B1 EP 14189206 A EP14189206 A EP 14189206A EP 3010091 B1 EP3010091 B1 EP 3010091B1
Authority
EP
European Patent Office
Prior art keywords
coupling
plug
plug connector
contact element
bushing
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.)
Not-in-force
Application number
EP14189206.7A
Other languages
German (de)
English (en)
Other versions
EP3010091A1 (fr
Inventor
Wolf Neumann-Henneberg
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP14189206.7A priority Critical patent/EP3010091B1/fr
Priority to US14/823,583 priority patent/US9490572B2/en
Publication of EP3010091A1 publication Critical patent/EP3010091A1/fr
Application granted granted Critical
Publication of EP3010091B1 publication Critical patent/EP3010091B1/fr
Not-in-force 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • 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
    • 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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole

Definitions

  • the invention relates to an electrical connector having the features of the preamble of claim 1.
  • the invention is particularly intended for detachable electrical connections for high currents of a few hundred amperes, for example in electric or hybrid vehicles.
  • the connector can also be used instead of cable lugs or screw connections.
  • electrically conductive metals such as copper and copper alloys or aluminum and aluminum alloys are used for electrical leads and electrical connectors. If, however, aluminum and copper-containing conductors are connected, corrosion is to be expected due to the different electrochemical potential. In order to prevent corrosion, moisture at contact points must be excluded in all circumstances, which requires special cable lugs and careful and time-consuming work. The problem of corrosion always exists when different metals are brought into contact.
  • the U.S. Patent 5,769,671 discloses a sleeve-shaped coupling for an electrical connector, in which a diamond-shaped spring clip arranged is.
  • the spring clip springs in the radial direction and has at longitudinal centers of its sides on a wart-like, inwardly projecting projections for contacting with an inserted plug.
  • a suitability of the known coupling for high currents is questionable and in any case it is unsuitable for different metals.
  • the Patent DE 623 128 discloses an electrical connector having a pin-shaped plug and a sleeve-shaped coupling which encloses the inserted plug with an annular space.
  • a stack of flat hole-disc-shaped contact elements is arranged, which have circular-arc-shaped spring arms which are an integral part of the contact elements and enclose the perforated disks with clearance.
  • the perforated disks are not coaxial in the coupling, but alternately have some offset in opposite directions, but so small that holes cover the perforated disks so far that the pin-shaped connector can be inserted. This connector is also unsuitable for different metals.
  • the European patent EP 2 595 250 B1 also discloses an electrical connector having a pin-shaped plug and a sleeve-shaped coupling which encloses the male connector with clearance.
  • contact elements are arranged, which spring in the radial direction and rest against the coupling and the plug when the plug is inserted, so that the contact elements electrically connect the plug and the coupling ,
  • This connector is suitable for high currents, but not for different metals.
  • the patent application GB 1 111 344 A discloses a screw-type electrical connector in which a copper bushing is disposed between a strand of aluminum and a brass screw clamp for protection against corrosion.
  • the object of the invention is a low-resistance electrical connector whose plug and coupling are made of different metals to protect against corrosion by different electrochemical potentials.
  • the electrical connector according to the invention has a pin-shaped plug and a sleeve-shaped coupling, which encloses the inserted plug with a gap.
  • an electrically conductive annular contact element is arranged, which springs transversely to a plug-in direction and electrically connects the plugged plug with the coupling.
  • the plug and the coupling consist of different metals.
  • the contact element and the coupling are not in direct contact with each other, but between the contact element and the coupling is a bushing made of metal, on the inside of the contact element is applied, so that it is in electrically conductive contact with the socket.
  • the socket has a corrosion protection layer, for example made of tin.
  • the corrosion protection layer is present at least on the surfaces which are in contact with the contact element and / or the coupling. If the coupling consists of the same metal as the contact element or the coupling, the bushing there does not need to have a corrosion protection layer.
  • the corrosion protection layer can also cover all surfaces of the socket.
  • the socket consists for example of copper or a copper alloy and / or is galvanic tin-plated.
  • the corrosion protection layer of the sleeve prevents corrosion due to different electrochemical potentials of different metals of the coupling and the contact element.
  • an embodiment provides a plurality of stacked contact elements.
  • An embodiment of the invention provides that the plug and the one or more contact elements of the same metal or at least of metals with the same Electrode potential exist.
  • the plug and the one or more contact elements made of copper or a copper alloy, wherein the plug and the one or more contact elements may consist of different copper alloys. It is essential that they have the same electrode potential, ie the same electrochemical potential, so that upon contact no electrical voltage is generated which would cause corrosion in the case of moisture, which is always to be assumed.
  • An embodiment of the invention provides that on one side or on both sides of the contact element or a stack of contact elements, a corrosion protection element between the plug and the coupling is arranged.
  • the corrosion protection element can for example consist of an electrically insulating material, for example a plastic, or it consists of a metal and has a corrosion protection layer.
  • the contact element avoids direct contact between the plug and the connector of the electrical connector so that there is no corrosion due to the different electrode potential of the plug and coupling.
  • An embodiment of the invention provides that the plug of the electrical connector made of copper or a copper alloy and / or the coupling made of aluminum or an aluminum alloy.
  • the reverse choice of material or a different choice of material are possible.
  • the coupling of the electrical connector is shrunk onto the socket which is arranged between the contact element and the coupling.
  • the coupling is heated and / or the bush is cooled so that the bushing can be introduced into the coupling smoothly or with little friction and damage to the anticorrosion layer is avoided.
  • the shrink joint does not have to have high mechanical support, essential is that the corrosion protection layer is not damaged during assembly.
  • the coupling has a support sleeve which encloses the coupling in the area in which the one or more contact elements are located.
  • the support sleeve supports the coupling from the outside against expansion.
  • the support sleeve is pressed onto the coupling and has a bias.
  • the support sleeve avoids widening of the coupling of the electrical connector according to the invention by relaxation through the bushing, to which the coupling is shrunk.
  • the support sleeve consists for example of stainless steel, has a corrosion protection layer or consists of an electrically insulating material.
  • the support sleeve is provided in particular for a clutch consisting of aluminum or an aluminum alloy, in which the danger of relaxation exists.
  • a coupling made of aluminum or an aluminum alloy serves as a plug-in connection of an electrical conductor, which consists of aluminum or an aluminum alloy and can therefore be connected without potential gradient to a coupling made of aluminum or an aluminum alloy.
  • the support sleeve prevents relaxation of the clutch and thus a reduction in the contact forces. Also, the support sleeve prevents relaxation of the clutch and reducing the contact forces between the plug and coupling due to temperature influences.
  • inventive electrical connector 1 has a pin-shaped connector 2 and a sleeve-shaped coupling 3.
  • the plug 2 is made of a copper alloy, the coupling 3 made of an aluminum alloy. Both the plug 2 and the coupling 3 have flattened tongue-shaped terminals 4, 5 for attaching unillustrated cable, for example by welding on.
  • the plug 2 has a flange 6 which bears against a front edge of the coupling 3 when the plug 2 is completely inserted into the coupling 3. The flange 6 limits a depth of insertion of the plug 2 into the coupling 3.
  • a longitudinally slotted bush 7 is arranged in the coupling 3.
  • the bushing 7 is made of a copper alloy and has an electrodeposited tin layer as a corrosion protection layer on all its surfaces, which prevents corrosion with the existing coupling of an aluminum alloy 3 of the connector 1.
  • the coupling 3 is heated to a temperature of 85 ° C or more for insertion of the socket 7 in the clutch 3 and possibly additionally de socket 7 cooled below room temperature, for example -85 ° C, so that the sleeve 7 is smoothly inserted into the coupling 3 and the corrosion protection layer is not damaged.
  • the bushing 7 sits sufficiently tight in the clutch 3. By cooling the bushing 7 when inserting into the clutch for example, -85 ° C wild an anticipated operating temperature anticipated, so that the bushing 7 does not loosen, if the clutch accordingly low temperature is exposed.
  • the coupling 3 has a support sleeve 8 made of stainless steel.
  • the support sleeve 8 has been pressed onto the coupling 3 before the insertion of the bushing 7 and surrounds the coupling 3 with prestressing, so that the coupling 3 consisting of an aluminum alloy does not expand due to an internal pressure of the bushing 7.
  • contact elements 9 In the socket 7, a number of stacked, annular and open at a peripheral location contact blades are arranged as contact elements 9.
  • One of the contact elements 9 is in FIG. 2 drawn.
  • the contact elements 9 are nearly circular, slightly flattened and as I said open at one point of its circumference. They have on both sides of the open peripheral point outwardly projecting projections 10 and two further outwardly projecting projections 11 which rest under elastic bias inside the sleeve 7.
  • the contact elements 9 are thereby in electrically conductive contact with the socket 7, which in turn is in electrically conductive contact with the coupling 3.
  • the contact elements 9 Approximately in the middle of semi-arcs between the projections 10, 11, the contact elements 9 inwardly and outwardly projecting projections 12, 13 on.
  • the protruding projections 12 are under elastic bias on the plug 2, when the plug 2 is inserted, so that an electrically conductive contact between the plug 2 and the contact elements 9, which in turn via the socket 7 is electrically conductive with the coupling are connected.
  • the protruding projections 13 protect the contact elements 9 from damage by plastic deformation due to overuse.
  • the projections 12, 13 can also be offset at other locations or inside and outside on the contact elements 9 in the circumferential direction (not shown).
  • the contact elements 9 spring due to their elasticity in the radial direction. By providing a number of contact elements 9, a low electrical contact resistance between the plug 2 and the clutch 3 is achieved.
  • the contact elements 9 are stamped from sheet metal, they consist, like the plug 2, of a copper alloy, so that they have the same electrode potential as the plug 2, so that no electrochemical voltage is generated in order to avoid corrosion.
  • a corrosion protection element 14 is arranged, in which a front end of the plug 2 is located when the plug 2 is inserted into the coupling 3 until its flange 6 abuts against the face of the coupling 3.
  • the corrosion protection element 14 is a longitudinally slotted sleeve.
  • the corrosion protection element 14 consists of a Copper alloy and is galvanically tin-plated like the bushing 7 to form a corrosion protection layer. The corrosion protection element 14 prevents direct contact between the plug 2 and the coupling 3 and avoids corrosion by its corrosion protection layer.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Claims (7)

  1. Connecteur enfichable électrique (1), comprenant une fiche (2) en forme de broche et un dispositif d'accouplement (3) en forme de manchon qui, dans l'état enfiché, entoure la fiche (2) en laissant un espace (15), et comprenant un élément de contact (9) électriquement conducteur disposé dans l'espace (15), sous la forme d'un anneau qui fait ressort transversalement à une direction d'enfichage et qui, dans l'état enfiché, est en appui contre la fiche (2) et relie électriquement la fiche (2) et le dispositif d'accouplement (3) entre eux, caractérisé en ce que la fiche (2) et le dispositif d'accouplement (3) sont constitués de métaux différents, qu'une douille (7) en métal est disposée entre le dispositif d'accouplement (3) et l'élément de contact (9), contre laquelle l'élément de contact (9) est en appui, qui est en contact électriquement conducteur avec le dispositif d'accouplement (3) et qui présente une couche de protection contre la corrosion.
  2. Connecteur enfichable électrique selon la revendication 1, caractérisé en ce que le connecteur enfichable (1) présente plusieurs éléments de contact (9) empilés.
  3. Connecteur enfichable électrique selon la revendication 1 ou 2, caractérisé en ce que la fiche (2) et l'élément de contact (9) présentent le même potentiel d'électrode.
  4. Connecteur enfichable électrique selon l'une des revendications 1 à 3, caractérisé en ce qu'un élément de protection contre la corrosion (14) est disposé entre la fiche (2) et le dispositif d'accouplement (3) sur un côté de l'élément de contact (9).
  5. Connecteur enfichable électrique selon l'une des revendications précédentes, caractérisé en ce que la fiche (2) est constituée de cuivre ou d'un alliage de cuivre et/ou le dispositif d'accouplement (3) d'aluminium ou d'un alliage d'aluminium.
  6. Connecteur enfichable électrique selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'accouplement (3) est monté par frettage sur la douille (7).
  7. Connecteur enfichable électrique selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'accouplement (3) présente un manchon d'appui (8) qui entoure le dispositif d'accouplement (3) dans la région de la douille (7) et le soutient contre un élargissement.
EP14189206.7A 2014-10-16 2014-10-16 Connecteur à fiches électrique Not-in-force EP3010091B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14189206.7A EP3010091B1 (fr) 2014-10-16 2014-10-16 Connecteur à fiches électrique
US14/823,583 US9490572B2 (en) 2014-10-16 2015-08-11 Electrical plug connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14189206.7A EP3010091B1 (fr) 2014-10-16 2014-10-16 Connecteur à fiches électrique

Publications (2)

Publication Number Publication Date
EP3010091A1 EP3010091A1 (fr) 2016-04-20
EP3010091B1 true EP3010091B1 (fr) 2017-05-24

Family

ID=51703092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14189206.7A Not-in-force EP3010091B1 (fr) 2014-10-16 2014-10-16 Connecteur à fiches électrique

Country Status (2)

Country Link
US (1) US9490572B2 (fr)
EP (1) EP3010091B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3451454A1 (fr) * 2017-09-04 2019-03-06 Newfrey LLC Procédé pour former une connexion électrique, système de connexion électrique et raccordement électrique
EP3883064B1 (fr) * 2020-03-18 2024-02-21 Nexans Connecteur et prise pour câbles d'énergie d'aluminium ainsi que câble d'énergie d'aluminium doté d'un connecteur ou d'une prise

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE623128C (de) 1933-03-27 1935-12-13 Claudius Fock Elektrische Steckvorrichtung
GB1111344A (en) * 1966-02-04 1968-04-24 British Insulated Callenders Improvements in or relating to electrical connections
US4714441A (en) * 1987-01-29 1987-12-22 Amp Incorporated Electrical socket
US4960391A (en) * 1989-06-16 1990-10-02 Amp Incorporated Hermetically sealed electrical bulkhead connector
US5769671A (en) 1997-02-05 1998-06-23 Pacesetter, Inc. Connector spring
DE10314063B4 (de) * 2003-03-28 2005-12-15 Audi Ag Aufsteckbare Stabzündspule
US7575462B2 (en) * 2005-10-21 2009-08-18 New Macey Pty Limited Electrical rail coupler assembly
CA2572755A1 (fr) * 2007-01-03 2008-07-03 Ken Shipalesky Systeme de raccordement electrique par cable metallique
TW200910705A (en) * 2007-07-09 2009-03-01 Thomas & Betts Internationnal Inc Bushing well with improved coupling components
NO328726B1 (no) * 2008-08-14 2010-05-03 Roxar Flow Measurement As Konnektorhus
JP5458931B2 (ja) * 2010-02-15 2014-04-02 日立金属株式会社 端子付き電線
US8761887B2 (en) * 2010-04-29 2014-06-24 Donatelle Plastics, Inc. Header for implantable pulse generator and method of making same
CN102487166B (zh) * 2010-12-06 2016-03-16 Bks工程公司 用于导体连接系统的多极输出口及其连接系统
EP2595250B1 (fr) * 2011-11-21 2014-01-08 Wolf Neumann-Henneberg Connecteur électrique
EP2866306B1 (fr) * 2013-10-23 2020-07-29 Aptiv Technologies Limited Prise de contact pour un connecteur à fiches électrique

Also Published As

Publication number Publication date
EP3010091A1 (fr) 2016-04-20
US9490572B2 (en) 2016-11-08
US20160111812A1 (en) 2016-04-21

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