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EP0959534B1 - Connecteur électrique, en particulier pour la mise à la terre - Google Patents

Connecteur électrique, en particulier pour la mise à la terre Download PDF

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Publication number
EP0959534B1
EP0959534B1 EP99109975A EP99109975A EP0959534B1 EP 0959534 B1 EP0959534 B1 EP 0959534B1 EP 99109975 A EP99109975 A EP 99109975A EP 99109975 A EP99109975 A EP 99109975A EP 0959534 B1 EP0959534 B1 EP 0959534B1
Authority
EP
European Patent Office
Prior art keywords
magnesium
tin
connection element
alloy
electrical
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.)
Expired - Lifetime
Application number
EP99109975A
Other languages
German (de)
English (en)
Other versions
EP0959534A2 (fr
EP0959534A3 (fr
Inventor
Anke Tesch
Dietmar Peters
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP0959534A2 publication Critical patent/EP0959534A2/fr
Publication of EP0959534A3 publication Critical patent/EP0959534A3/fr
Application granted granted Critical
Publication of EP0959534B1 publication Critical patent/EP0959534B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  

Definitions

  • the invention relates to an electrical connecting element, in particular an electrical one Earth connection element, which is a base body made of a non-precious metal, especially steel, or a precious metal, especially gold or silver, or a Has coating of one of these metals, and that can be used in a component or can be placed on a component, which at least in its with the connecting element contact area made of magnesium or a magnesium alloy is made.
  • an electrical connecting element in particular an electrical one Earth connection element, which is a base body made of a non-precious metal, especially steel, or a precious metal, especially gold or silver, or a Has coating of one of these metals, and that can be used in a component or can be placed on a component, which at least in its with the connecting element contact area made of magnesium or a magnesium alloy is made.
  • the material magnesium is increasingly used in the automotive industry, because it is characterized by good recycling behavior, high strength and low weight and is characterized by a good processing ability and also relative is inexpensive.
  • a typical example of the use of magnesium in the Automotive industry represent gearboxes made of magnesium; it will but also frame structures, levers or supports made of magnesium.
  • magnesium or a magnesium alloy comes with a precious metal, especially gold or silver, or with a non-precious metal, especially steel, in Contact such as this when attaching a magnesium component (e.g. the one above gearbox) on another component (e.g. one made of aluminum manufactured engine block) using a connecting element (e.g. a steel screw) If so, occurs between the connecting element made of non-noble metal or noble metal and the component made of magnesium or the magnesium alloy has contact corrosion, which lead to a progressive destruction of the aforementioned component in its Contact area with the connecting element leads.
  • a magnesium component e.g. the one above gearbox
  • another component e.g. one made of aluminum manufactured engine block
  • a connecting element e.g. a steel screw
  • DE-PS 42 27 259 is therefore to avoid contact corrosion in the Attachment of a magnesium wheel to the wheel system of a motor vehicle provided that between the inside contact surface of the magnesium wheel and the Wheel system in the area of mounting holes from an annular spacer Aluminum is inserted and as a centering in the hub bore of the Magnesium wheel an annular adapter made of plastic is clamped to the radial covers the inner peripheral surface of the spacer and centers it.
  • DE-PS 43 06 484 which is regarded as the closest prior art, is used to avoid contact corrosion during fastening a magnesium wheel on the steel wheel system of a motor vehicle and in particular to avoid skipping contact corrosion from the Wheel system provided for the hub that on the radial outer edge of the Hub contact surface of the magnesium wheel with respect to the wheel system from a ring Aluminum with an almost square cross section flush with the magnesium wheel finally cast with its outer contours.
  • connection element at least in its with the component made of magnesium or a magnesium alloy Contact area is coated with tin or a tin alloy.
  • the measures according to the invention advantageously result in a electrically conductive connecting element, in particular an electrical Ground connection element, which is characterized in that at a contact of the invention with tin or an alloy of this metal coated connecting element and the component made of magnesium or one Magnesium alloy eliminates the occurrence of contact corrosion or at least is largely reduced while the electrical conductivity of the electrical Connection element is retained.
  • the result according to the invention is surprising in particular for the reason that results from the electrochemical series of voltages - magnesium compared to tin represents the less noble metal and it would therefore have been expected that one Contact of magnesium with tin the former metal the corrosive anode represent and would therefore be exposed to contact corrosion.
  • FIG. 1 now shows a mass concept designed for use in the automotive field, that is to say a technical design of the current return line from consumers arranged in the automobile to the negative pole B of a battery (not shown).
  • a gear housing G made of magnesium or a magnesium alloy is fastened to a motor housing M made of cast iron or aluminum via an electrical connecting element 1, an intermediate plate Z being arranged between the motor housing M and the gear housing G.
  • a starter flange SF, preferably made of AlSi 11 Cu, is fastened to the transmission housing G via connecting elements 2a, 2b and carries the starter device ST of the motor vehicle.
  • the starter device ST is connected via an electrically conductive cable K + to the positive pole B + of the battery (not shown in FIG. 1).
  • Another cable K- connects the negative pole B- of the battery to the right end 1 'of the connecting element 1 in FIG. 1.
  • the starter circuit therefore runs - in the technical direction of current - from the positive pole B + of the battery via the first cable K + to the starter device ST and via the starter flange SF and the gear housing G to the electrical connection element 1, which is connected via the second cable K- to the negative pole B- of the battery.
  • Figure 1 shows an electrical generator EG, the positive pole EG + via an electrical generator cable GK with the electrical consumers (not shown) of the motor vehicle is connected.
  • the ground connection for these consumers takes place via the connection of the motor housing M to the negative pole EG- of the generator EG, which in turn via the electrical connection element 1 with the Gear housing G is connected.
  • connection element 1 at least in its with the magnesium Gear housing G related area 4 with a layer of tin or an alloy of tin is coated.
  • the electrochemical Voltage series which from the potential difference to be calculated from it allows a general assessment of the corrosion behavior between two metals, is obtained in that for a single metal in the de-energized state Potential against a reference electrode is determined, i.e. that in such measurements no corrosion currents flow between the electrodes.
  • Potential against a reference electrode is determined, i.e. that in such measurements no corrosion currents flow between the electrodes.
  • the tin or Tin alloy is applied with a layer thickness that is preferably greater than 15 Micrometer is.
  • the coating of tin or tin alloy can be applied directly the base body 2 are applied. But it is also possible that under the Coating is provided, that is, that on the base body 2 first a copper layer is applied and only then the coating on this layer made of tin or tin alloy.

Landscapes

  • Prevention Of Electric Corrosion (AREA)
  • Conductive Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Claims (5)

  1. Connecteur électrique, en particulier pour la mise à la masse, lequel présente un corps de base (2) réalisé dans un métal non précieux, notamment de l'acier, ou dans un métal précieux, notamment de l'argent ou de l'or, ou qui présente un plaquage effectué dans l'un de ces métaux, et qui peut être inséré dans un composant (G) ou monté sur un composant (G), lequel, au moins dans sa zone de contact (3) qui se trouve en contact avec le connecteur (1), est fabriqué en magnésium ou dans un alliage de magnésium, le connecteur (1) étant revêtu d'étain ou d'un alliage d'étain au moins dans sa zone (4) qui se trouve en contact avec le composant (G) en magnésium ou en alliage de magnésium.
  2. Connecteur selon la revendication 1, caractérisé en ce que le revêtement en étain ou en alliage d'étain présente une épaisseur de couche qui est supérieure à 15 micromètres.
  3. Connecteur selon l'une des revendications 1 ou 2, caractérisé en ce que le revêtement en étain ou en alliage d'étain est appliqué directement sur le corps de base (2).
  4. Connecteur selon l'une des revendications 1 ou 2, caractérisé en ce qu'un revêtement en cuivre est disposé sous le revêtement en étain ou en alliage en étain.
  5. Concept de masse électrique, notamment pour un véhicule automobile, destiné à renvoyer le courant des appareillages installés dans l'automobile vers le pôle négatif (B- ; EG-) d'une batterie ou d'un alternateur (EG) par le biais d'un connecteur électrique (1), caractérisé par un connecteur (1) selon l'une des revendications 1 à 4.
EP99109975A 1998-05-22 1999-05-21 Connecteur électrique, en particulier pour la mise à la terre Expired - Lifetime EP0959534B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823008A DE19823008A1 (de) 1998-05-22 1998-05-22 Elektrisches Verbindungselement, insbesondere elektrisches Masseverbindungselement
DE19823008 1998-05-22

Publications (3)

Publication Number Publication Date
EP0959534A2 EP0959534A2 (fr) 1999-11-24
EP0959534A3 EP0959534A3 (fr) 2001-01-03
EP0959534B1 true EP0959534B1 (fr) 2003-02-19

Family

ID=7868657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109975A Expired - Lifetime EP0959534B1 (fr) 1998-05-22 1999-05-21 Connecteur électrique, en particulier pour la mise à la terre

Country Status (2)

Country Link
EP (1) EP0959534B1 (fr)
DE (2) DE19823008A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611429B2 (en) * 2001-11-21 2003-08-26 Visteon Global Technologies, Inc. Electronic circuit to MG beam grounding method
DE102005024383B3 (de) * 2005-05-27 2007-02-22 Siemens Ag Anordnung zur elektrischen Anbindung einer Magnesiumtragstruktur an ein Massepotential eines Kraftfahrzeugs
DE102007005178B4 (de) * 2006-02-03 2016-10-27 Sew-Eurodrive Gmbh & Co Kg Elektrisches Gerät
DE102007028164A1 (de) 2007-06-20 2008-12-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Anordnung in einem Kraftfahrzeug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116764B (de) * 1960-04-23 1961-11-09 Alois Schiffmann Dipl Kfm Geschlitzter Kabelschuh fuer eine Erdungsarmatur
DE2207771A1 (de) * 1972-02-18 1973-08-23 Thurner Bayer Druckguss Leichtmetallrad, insbesondere fuer kraftfahrzeuge und verfahren zu seiner herstellung
US3895851A (en) * 1973-08-23 1975-07-22 Amp Inc Brittle-surfaced connector
SE385636B (sv) * 1974-04-25 1976-07-12 Saab Scania Ab Anordning vid ett elektriskt kontaktdon
US4478915A (en) * 1983-11-07 1984-10-23 United Technologies Corporation Corrosion resistant shim for electrically joining incompatible materials
FR2613541B1 (fr) * 1987-04-06 1990-04-06 Labinal Procede de realisation de cosses en plomb ou objets analogues sur des cables en aluminium
ATE131318T1 (de) * 1991-06-04 1995-12-15 Gec Alsthom T & D Ag Anordnung zum stromleitenden verbinden zweier leiter aus kupfer oder aluminium.

Also Published As

Publication number Publication date
EP0959534A2 (fr) 1999-11-24
DE59904309D1 (de) 2003-03-27
DE19823008A1 (de) 1999-11-25
EP0959534A3 (fr) 2001-01-03

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