EP0726613B1 - 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
EP0726613B1
EP0726613B1 EP95114277A EP95114277A EP0726613B1 EP 0726613 B1 EP0726613 B1 EP 0726613B1 EP 95114277 A EP95114277 A EP 95114277A EP 95114277 A EP95114277 A EP 95114277A EP 0726613 B1 EP0726613 B1 EP 0726613B1
Authority
EP
European Patent Office
Prior art keywords
tape
coating
copper
contact support
projection
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.)
Revoked
Application number
EP95114277A
Other languages
German (de)
English (en)
Other versions
EP0726613A2 (fr
EP0726613A3 (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(B1) "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 contact carrier tape consisting essentially of copper Resistance heating, the primary material being designed as a metal strip with a contact area which has a coating on its underside of the band that can be connected to the contact carrier band comprises a material which consists essentially of silver, the Melting point of the coating material below the melting point of the metal strip lies and a process for the production of raw material and semi-finished product for electrical Contacts.
  • EP-A-300 197 is the brazing of a contact plate with a braze wart known on the underside on a contact carrier.
  • EP-C-42 16 224 EP-A-570 662 discloses a starting material for producing electrical contacts, for example relay contacts, in which the starting material is designed as a metal strip with a contact area which is welded to an electrically conductive one Contact carrier is also connected with an electrical conductivity of more than 15 m / (Ohm x mm 2 ) or more than (15 S x 10 6 ) / m by means of resistance heating; the contact carrier consists essentially of copper; the strip surface side of the metal strip provided with the contact area has strand-like projections as weld nipples which have a coating which consists essentially of silver, the melting point of the material of the coating being below the melting point of the metal strip; the metal strip consists essentially of nickel, the actual contact area being formed on the basis of a gold alloy or silver-palladium alloy.
  • 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 to a contact carrier strip with a high electrical conductivity of more than 15 m / (ohm x mm 2 ), as is the case, for example, with Copper is present, is suitable.
  • a method for producing a semi-finished product for electrical contacts is to be specified be higher, in which the metal band as a raw material with the contact carrier band Conductivity is connected.
  • the task is characterized by the characterizing features of the claim 1 solved.
  • the core area of the metal strip essentially consists made of nickel; however, it is also possible to have a core area made of a copper-nickel alloy to provide.
  • the object is achieved by the characterizing features of claim 4 .
  • the contact area for the later work contact preferably consists of a gold or a silver-palladium alloy; it can advantageously together with the coating the protrusions are applied by roll cladding.
  • the object is achieved by the characterizing features of claim 8 .
  • FIG. 1a shows the metal strip 1, its auxiliary welding support or core area 2 as the primary material consists essentially of nickel or a copper-nickel base alloy; preferably an alloy with a nickel content of 30% by weight and an iron content of approx. 1 % By weight and the rest copper used; in a further preferred embodiment the core area 2 of the metal strip made 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 later work contact which consists essentially of precious metal, preferably a gold alloy or silver-palladium alloy consists.
  • the underside of the band 4 of the core area 2 has one in the middle Projection 5 as a weld nipple, the entire underside 4 of the band having a coating is provided, which consists essentially of silver.
  • Both the core area 2 and the contact area 3 of the metal strip 1 have a cross section seen a trapezoidal outer circumference, with the profile width in the direction Tab 5 continuously increased.
  • FIG. 1b shows the metal strip 1 placed on the contact carrier strip 8 in an electrode device; the coating 6 located on the strand-like projection 5 lies directly on it the surface of the contact carrier tape 8.
  • the welding circuit is only partially over electrodes 9 and 10 shown closed, wherein electrode 9 is a in cross section seen trapezoidal recess 11 in which the metal band with its top is positively introduced, so that the metal strip 1 with its coated projection 5 rests precisely aligned on the surface 12 of the contact carrier strip 8; the The welding circuit is not shown here for a better overview.
  • the coating 6 in the initial phase of the welding current pulse is melted and that the coating material with the substantially made of copper material of the contact carrier forms an alloy that essentially consists of silver and copper;
  • the material for the contact carrier tape is also Suitable copper alloys, such as Bronze, nickel silver, copper-iron alloy or Copper-beryllium alloy.
  • Figure 1c shows in cross section a contact profile strand, after which he partially in Figure 1b has shown electrode device and with the underlying contact carrier tape 8 is firmly connected electrically and mechanically; based on Figure 1c is simple recognizable that the coating originally located on the underside 4 of the metal strip 6 moves away from the projection 5 and the adjacent areas of the underside 4 and has one together with the copper in the area of the surface 12 of the contact carrier 8 connection area formed by means of melting through resistance heating Contact carrier tape 8 and metal tape 1; during the actual welding process becomes the point of contact designated by number 13 by the action of the electric current 1b heated until the silver is out of range the coating 6 and the copper from the surface area of the contact carrier 8 with one another alloy and a new alloy 14 is created by adjusting the welding parameters, the eutectic for an alloy with 28% by weight copper, the rest silver (AgCu28) with a Melting point at 779 ° C corresponds, or very obvious; when melting this alloy If necessary, the alloy formed extends depending on the length of the welding interval
  • FIG. 2a shows a metal strip 1 'as a starting material, which is essentially constructed similarly, as that described with reference to Figure 1a; in contrast to Figure 1a, however, the underside of the band 4 'two strand-shaped grooves or depressions 16, 17, between which the one from FIG 1a known strand-like projection 5 is arranged.
  • the depressions 16, 17 are geometric formed so that they by the volume of the melting lake 14 when welding to the Contact carrier tape 8 are filled and thus a lateral swelling of the alloy formed prevent.
  • welding auxiliary supports preferably nickel or a copper-nickel base alloy used.
  • the metal strip 1 'in the electrode device is shown with reference to FIG. 2b, the metal strip 1 'in the region of the projection 5 directly with the coating 6 on the Surface 12 of the contact carrier tape 8 rests.
  • the two electrodes 9, 10 are only partially shown, the electrode device has been omitted for a better overview.
  • the trapezoidal recess 11 of the electrode 8 is also for the form-fitting Recording of the metal strip 1 'recognizable.
  • Figure 2c shows in cross section a contact profile strand after it has been shown in Figure 2b Has left the electrode device and the metal strip 1 'with the contact carrier strip 8 electrically and is mechanically firmly connected by welding.
  • the contact connection point designated with number 13 between projection 5 with silver coating 6 and contact carrier 8 so strongly warmed that the silver from the coating area of the projection and then also liquefied from the strand-shaped depressions 16, 17 until the silver is out alloy the coating area and the copper from the contact carrier strip 8 with one another and thus an alloy is created which is the eutectic alloy with 28% by weight copper, Remainder corresponds to silver with a melting point at 779 ° C or is 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)

Claims (8)

  1. Matière de base pour la fabrication de contacts électriques par connexion avec un ruban porte-contacts (8) conducteur de l'électricité et constitué essentiellement en cuivre, par échauffement résistif, la matière de base étant réalisée sous forme d'un ruban métallique (1) comportant une zone de contact (3) et présentant une zone de noyau (2) en nickel ou en un alliage à base de cuivre et de nickel et comprenant, sur sa face inférieure (4) susceptible d'être reliée au ruban porte-contacts (8), un revêtement (6) en un matériau constitué essentiellement en argent, le point de fusion du matériau du revêtement étant inférieur au point de fusion du ruban métallique (1), caractérisée en ce que le revêtement (6) est appliqué sur une saillie unique (5) en forme de structure linéaire de la face inférieure (4, 4') du ruban métallique (1, 1') au moins dans la zone de sa pointe, le rapport entre l'épaisseur de la couche du matériau appliqué du revêtement et la hauteur mesurée depuis le fond de la face inférieure du ruban jusqu'à la pointe de la saillie étant compris entre 1:2 et 1:10.
  2. Matière de base selon la revendication 1, caractérisée en ce que l'alliage à base de cuivre et de nickel présente une teneur en nickel dans la plage de 9 à 70 % en poids.
  3. Matière de base selon l'une ou l'autre des revendications 1 et 2, caractérisée en ce que l'alliage à base de cuivre et de nickel présente une teneur en étain dans la plage de 2 à 10 % en poids.
  4. Procédé pour la production d'une matière de base selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on applique le revêtement (6) sur la saillie (5) du ruban métallique, laquelle est réalisée par laminage.
  5. Procédé selon la revendication 4, caractérisé en ce que l'on applique le revêtement par déposition galvanique.
  6. Procédé selon la revendication 4, caractérisé en ce que l'on applique le revêtement par revêtement sous vide.
  7. Procédé pour la production d'une matière de base selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on applique le revêtement (6) situé sur la saillie (5) conjointement avec le revêtement prévu sur la zone de contact (3) par une opération de laminage commune sur la zone de noyau (2).
  8. Procédé pour la production d'un produit semi-fini destiné à des contacts électriques, dans lequel on applique sur un ruban porte-contacts (8) constitué essentiellement en cuivre un ruban métallique (1) pourvu d'un profil de contact en tant que matière de base selon la revendication 1 par sa face inférieure (4) de telle sorte qu'une saillie (5) située sur cette face inférieure du ruban s'appuie sur le ruban porte-contacts, et on établit ensuite au moyen d'une opération de fusion par échauffement résistif une liaison électrique et mécanique ferme entre le ruban métallique (1) et le ruban porte-contacts (8), ce pourquoi on prélève la part d'argent depuis le ruban métallique et la part de cuivre depuis le ruban porte-contacts pour former un alliage argent/cuivre entre le ruban métallique et le ruban porte-contacts, caractérisé en ce que l'on applique le ruban métallique sur le ruban porte-contacts, on fait fondre le revêtement du ruban métallique par échauffement résistif et le revêtement s'écoule par pression exercée entre le ruban métallique et le ruban porte-contacts depuis la saillie unique jusque dans des rainures ou cavités (16, 17) voisines de la saillie et y forme un alliage avec le matériau du ruban porte-contacts pénétrant dans les rainures, ledit alliage établissant une liaison électrique et mécanique ferme aussi bien avec le matériau du ruban métallique qu'avec le matériau du ruban porte-contacts (8), l'alliage formé pendant l'échauffement résistif présentant un point de fusion qui correspond à ou qui est très proche de l'eutectique de l'alliage argent/cuivre.
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 EP0726613A2 (fr) 1996-08-14
EP0726613A3 EP0726613A3 (fr) 1997-09-10
EP0726613B1 true 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)

Families Citing this family (3)

* 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
EP1387370A1 (fr) * 2002-08-03 2004-02-04 INOVAN GmbH & Co. KG Metalle und Bauelemente Demi-produit en forme de bande
DE102019104318C5 (de) * 2019-02-20 2023-06-22 Auto-Kabel Management Gmbh Elektrischer Leiter sowie Verfahren zur Herstellung eines elektrischen Leiters

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
DE3866298D1 (de) * 1987-07-22 1992-01-02 Siemens Ag Verfahren zum verbinden von werkstuecken durch widerstandserwaermung mittels eines kurzzeit-energieimpulses.
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

Also Published As

Publication number Publication date
EP0726613A2 (fr) 1996-08-14
DE59507911D1 (de) 2000-04-06
DE19504144C2 (de) 1998-09-24
US5883352A (en) 1999-03-16
DE19504144A1 (de) 1996-08-22
EP0726613A3 (fr) 1997-09-10

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