EP0726613A2 - Ebauche et procédé pour la fabrication d'ébauches et de produits semi-finis pour des contacts électriques - Google Patents

Ebauche et procédé pour la fabrication d'ébauches et de produits semi-finis pour des contacts électriques Download PDF

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Publication number
EP0726613A2
EP0726613A2 EP95114277A EP95114277A EP0726613A2 EP 0726613 A2 EP0726613 A2 EP 0726613A2 EP 95114277 A EP95114277 A EP 95114277A EP 95114277 A EP95114277 A EP 95114277A EP 0726613 A2 EP0726613 A2 EP 0726613A2
Authority
EP
European Patent Office
Prior art keywords
strip
coating
contact carrier
copper
metal
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
EP95114277A
Other languages
German (de)
English (en)
Other versions
EP0726613A3 (fr
EP0726613B1 (fr
Inventor
Heinrich Wolf
Dieter Feldmer
Rudolf Schnabl
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.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7753464&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0726613(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Priority to DE29522396U priority Critical patent/DE29522396U1/de
Publication of EP0726613A2 publication Critical patent/EP0726613A2/fr
Publication of EP0726613A3 publication Critical patent/EP0726613A3/fr
Application granted granted Critical
Publication of EP0726613B1 publication Critical patent/EP0726613B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0214—Resistance 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
    • 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
    • H01R4/02—Soldered or welded connections
    • H01R4/029—Welded connections

Definitions

  • the invention relates to a starting material for producing electrical contacts by connecting to an electrically conductive, essentially copper contact carrier tape by means of resistance heating, the preliminary material being designed as a metal tape with a contact area, which has a coating on its underside of the tape that can be connected to the contact carrier tape comprises a material which consists essentially of silver, the melting point of the material of the coating being below the melting point of the metal strip and a method for producing starting material and semi-finished product for electrical contacts.
  • a starting material for the production of electrical contacts for example relay contacts
  • the starting material is designed as a metal strip with a contact area, which by welding to an electrically conductive contact carrier also with an electrical conductivity of more than 15 m / (Ohm x mm 2 ) or more than (15 S x 10 6 ) / m is connected by means of resistance heating
  • the contact carrier consists essentially of copper
  • the strip surface side of the metal strip comprising the contact area has strand-like projections as weld nipples which contain a coating which essentially consists of silver, the melting point of the material of the coating being below the melting point of the metal strip
  • the metal band is in essentially made of nickel, the actual contact area being formed on the basis of a gold alloy or silver-palladium alloy.
  • the invention has for its object to provide a metal strip as a starting material for the production of electrical contacts, which has a contact profile of small profile width, and for resistance welding on a contact carrier tape high electrical conductivity of more than 15 m / (Ohm x mm 2 ) as they for example with copper, is suitable.
  • the invention has for its object to provide a method for producing the metal strip as a raw material.
  • a method for producing a semi-finished product for electrical contacts is to be specified, in which the metal strip is connected as a starting material to the contact carrier strip with high conductivity.
  • the core area of the metal strip consists essentially of nickel; however, it is also possible to provide a core area made of a copper-nickel alloy.
  • the contact area for the subsequent work contact preferably consists of a gold or a silver-palladium alloy; it can advantageously be applied together with the coating of the projections by roll cladding.
  • FIG. 1a shows the metal strip 1 as the primary material, the auxiliary welding support or core area 2 essentially consisting of nickel or a copper-nickel-based alloy; an alloy with a nickel content of 30% by weight, an iron content of approximately 1% by weight and the rest copper are preferably used;
  • the core area 2 of the metal strip consists of an alloy with a nickel content of 9% by weight, a tin content of 2% by weight and the rest copper.
  • the actual contact area 3 for the subsequent work contact which essentially consists of noble metal, preferably of a gold alloy or silver-palladium alloy.
  • the underside 4 of the core area 2 has a projection 5 as a weld nipple in its center, the entire underside 4 of the band being provided with a coating which essentially consists of silver.
  • Both the core region 2 and the contact region 3 of the metal strip 1 have a trapezoidal outer circumference when viewed in cross section, the profile width increasing continuously in the direction of the projection 5.
  • FIG. 1b shows the metal strip 1 placed on the contact carrier strip 8 in the electrode device; the coating 6 located on the strand-like projection 5 lies directly on the surface of the contact carrier strip 8.
  • the welding circuit is closed via the electrodes 9 and 10, which are only partially shown, electrode 9 having a trapezoidal recess 11, seen in cross section, in which the metal strip is introduced with its top so that the metal strip 1 with its coated projection 5 is exact aligned on the surface 12 of the contact carrier tape 8 rests; the welding circuit is not shown here for a better overview. It can be seen from FIG.
  • FIG. 1c shows in cross section a contact profile strand, after which it has left the electrode device partially shown in FIG. 1b and is firmly and mechanically connected to the contact carrier strip 8 underneath; 1c shows in a simple manner that the coating 6 originally located on the underside 4 of the metal strip has moved away from the projection 5 and the adjacent areas of the underside 4 and together with the copper in the area of the surface 12 of the contact carrier 8 Melting process formed by resistance heating connection area between contact carrier tape 8 and metal tape 1; During the actual welding process, the contact connection designated by number 13 according to FIG.
  • Figure 2a shows a metal strip 1 'as a raw material, which is constructed essentially similar to that described with reference to Figure 1a;
  • the band underside 4 ' has two strand-shaped grooves or depressions 16, 17, between which the strand-like projection 5 known from FIG. 1a is arranged.
  • the depressions 16, 17 are geometrically designed such that they are filled by the volume of the melting lake 14 when they are welded onto the contact carrier strip 8 and thus prevent the alloy formed from swelling to the side.
  • Nickel or a copper-nickel-based alloy is also preferably used as the material for the core region 2 or auxiliary welding support.
  • the use of the metal strip 1 'in the electrode device is shown with reference to FIG. 2b, the metal strip 1' lying directly in the region of the projection 5 with the coating 6 on the surface 12 of the contact carrier strip 8.
  • the two electrodes 9, 10 are only partially shown, the electrode device being omitted for a better overview.
  • the trapezoidal recess 11 of the electrode 8 for the positive reception of the metal strip 1 ' can also be seen from FIG. 2b.
  • FIG. 2c shows a cross-section of a contact profile strand after it has left the electrode device shown in FIG. 2b and the metal strip 1 'is firmly and mechanically connected to the contact carrier strip 8 by welding.
  • the contact connection point designated by number 13 between the projection 5 with the silver coating 6 and the contact carrier 8 is heated so strongly by the action of the electric current that the silver emerges from the coating area of the projection and subsequently also from the strand-shaped depressions 16, 17 liquefies until the silver from the coating area and the copper from the contact carrier strip 8 alloy with one another and thus an alloy is formed which corresponds to the eutectic alloy with 28% by weight copper, the rest silver with a melting point at 779 ° C., or very obvious.
  • the contact carrier tape is preferably made of copper, but it is also possible to use copper alloys such as bronze, nickel silver CuFe 2 or CuBe as the material for the contact carrier tape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Contacts (AREA)
  • Manufacture Of Switches (AREA)
  • Electroplating Methods And Accessories (AREA)
EP95114277A 1995-02-09 1995-09-12 Ebauche et procédé pour la fabrication d'ébauches et de produits semi-finis pour des contacts électriques Revoked EP0726613B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29522396U DE29522396U1 (de) 1995-02-09 1995-09-12 Vormaterial zur Herstellung elektrischer Kontakte

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19504144A DE19504144C2 (de) 1995-02-09 1995-02-09 Vormaterial und Verfahren zur Herstellung von Vormaterial und Halbzeug für elektrische Kontakte
DE19504144 1995-02-09

Publications (3)

Publication Number Publication Date
EP0726613A2 true EP0726613A2 (fr) 1996-08-14
EP0726613A3 EP0726613A3 (fr) 1997-09-10
EP0726613B1 EP0726613B1 (fr) 2000-03-01

Family

ID=7753464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114277A Revoked EP0726613B1 (fr) 1995-02-09 1995-09-12 Ebauche et procédé pour la fabrication d'ébauches et de produits semi-finis pour des contacts électriques

Country Status (3)

Country Link
US (1) US5883352A (fr)
EP (1) EP0726613B1 (fr)
DE (2) DE19504144C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19748288A1 (de) * 1997-10-31 1999-05-06 Kloeckner Moeller Gmbh Schaltkontaktstück für Niederspannungs-Schaltgeräte
WO2020169295A1 (fr) * 2019-02-20 2020-08-27 Auto-Kabel Management Gmbh Conducteur électrique ainsi que procédé de fabrication d'un conducteur électrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1387370A1 (fr) * 2002-08-03 2004-02-04 INOVAN GmbH & Co. KG Metalle und Bauelemente Demi-produit en forme de bande

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1155427A (en) * 1914-11-20 1915-10-05 Independent Lamp And Wire Company Inc Contact bodies of tungsten.
US2181083A (en) * 1936-01-02 1939-11-21 Metals & Controls Corp Laminated contact
US2281446A (en) * 1937-01-07 1942-04-28 Callite Tungsten Corp Electrical contact
US2688574A (en) * 1951-12-06 1954-09-07 Western Electric Co Method of making bimetal contact tape
US3191275A (en) * 1961-09-26 1965-06-29 Talon Inc Method of making electrical contacts
US3346350A (en) * 1965-05-25 1967-10-10 Engelhard Ind Inc Electrical contact tape
AU435640B2 (en) * 1969-04-11 1973-05-14 Chugai Electric Industrial Co. Ltd A button type composite contact
JPS54133450A (en) * 1978-04-10 1979-10-17 Hitachi Ltd Diffusion bonding method for different kind metal
DE2844888C2 (de) * 1978-10-14 1983-02-24 W.C. Heraeus Gmbh, 6450 Hanau Vormaterial zur Herstellung elektrischer Kontakte
JPS607157A (ja) * 1983-06-25 1985-01-14 Masami Kobayashi Ｉｃ用リ−ドフレ−ム
EP0301218B1 (fr) * 1987-07-22 1991-11-21 Siemens Aktiengesellschaft Procédé de jonction de pièces au moyen de chauffage par résistance au moyen d'une impulsion d'énergie de courte durée
ATE94684T1 (de) * 1987-07-22 1993-10-15 Siemens Ag Kontakt zum hartloeten auf einem traeger mittels widerstandspressschweissung mittels eines kurzzeit-energieimpulses.
JPH01151114A (ja) * 1987-12-08 1989-06-13 Tanaka Kikinzoku Kogyo Kk 複合電気接点材料
DE4216224C2 (de) * 1992-05-19 1994-03-17 Heraeus Gmbh W C Vormaterial und Halbzeug für elektrische Kontakte sowie Verfahren zur Herstellung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19748288A1 (de) * 1997-10-31 1999-05-06 Kloeckner Moeller Gmbh Schaltkontaktstück für Niederspannungs-Schaltgeräte
WO2020169295A1 (fr) * 2019-02-20 2020-08-27 Auto-Kabel Management Gmbh Conducteur électrique ainsi que procédé de fabrication d'un conducteur électrique
US11394131B2 (en) 2019-02-20 2022-07-19 Auto-Kabel Management Gmbh Electrical conductor and method for producing an electrical conductor
EP4239802A3 (fr) * 2019-02-20 2023-11-08 Auto-Kabel Management GmbH Conducteur électrique et procédé de fabrication d'un conducteur électrique

Also Published As

Publication number Publication date
DE59507911D1 (de) 2000-04-06
EP0726613A3 (fr) 1997-09-10
DE19504144A1 (de) 1996-08-22
US5883352A (en) 1999-03-16
DE19504144C2 (de) 1998-09-24
EP0726613B1 (fr) 2000-03-01

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