EP2524384B1 - Contact électrique et procédé pour sa fabrication - Google Patents

Contact électrique et procédé pour sa fabrication Download PDF

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Publication number
EP2524384B1
EP2524384B1 EP11700420.0A EP11700420A EP2524384B1 EP 2524384 B1 EP2524384 B1 EP 2524384B1 EP 11700420 A EP11700420 A EP 11700420A EP 2524384 B1 EP2524384 B1 EP 2524384B1
Authority
EP
European Patent Office
Prior art keywords
wire
contact
semi
finished product
conductive material
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
EP11700420.0A
Other languages
German (de)
English (en)
Other versions
EP2524384A1 (fr
Inventor
Jens Heinrich
Ralf Hoffmann
Peter Sandeck
Martin Wieberger
Peter Braumann
Andreas Koffler
Bernd Kempf
Allen Molvar
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.)
Umicore AG and Co KG
TE Connectivity Germany GmbH
Original Assignee
Umicore AG and Co KG
TE Connectivity Germany GmbH
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 Umicore AG and Co KG, TE Connectivity Germany GmbH filed Critical Umicore AG and Co KG
Publication of EP2524384A1 publication Critical patent/EP2524384A1/fr
Application granted granted Critical
Publication of EP2524384B1 publication Critical patent/EP2524384B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material
    • H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/54—Miscellaneous apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
    • Y10T428/24314—Slit or elongated

Definitions

  • the present invention relates to a method for producing an electrical contact element from a semifinished product as well as to the electrical contact element and the corresponding semifinished product.
  • Electrical contacts are found in electrical appliances and switchgear, such as e.g. in light switches, circuit breakers or relays, diverse applications and are widely used.
  • noble metal / metal oxide composite materials for example silver / tin oxide
  • a contact carrier material by welding
  • the object underlying the present invention can therefore be seen to provide a method for producing a contact element, on the one hand ensures optimum properties of the contact element during operation and on the other hand, a material-saving and cost-effective manufacturability.
  • the present invention is based on the idea that for the production of the actual contact as a semi-finished part of a wire of metal composite material is used as the first conductive material, which is provided with a metal coating as a second electrically conductive material, wherein the metal coating on a part the surface was removed again to expose the core of metal composite at the later contact surface.
  • the metal composite material may consist of a suitable metal, such as copper, copper-nickel alloy, chromium-nickel alloy or silver, which oxides such as tin oxide, zinc oxide, iron oxide such as Fe 2 O 3 , copper oxide, cadmium oxide, indium oxide, antimony oxide, lanthanum oxide, Magnesium oxide, manganese oxide, bismuth oxide, tellurium oxide, carbon (in the form of carbon blacks, graphite or carbon fibers), or nickel, if the metal is otherwise different from nickel.
  • a suitable metal composite material are described for example in DE 2 259 792 . DE 102 007 040 171 .
  • EP 736885 are examples of a metal composite material.
  • the metal coating may consist of the same metal (s) as the metal composite forming the core, but does not contain any of the ingredients which cause the weld strength of the metal composite.
  • the silver sheath of a silver tin oxide wire is removed from the region of the subsequent contact point by scraping or splitting. In this way, a minimum loss of precious metal is guaranteed and at the same time a contamination of the switching component with the noble metal in the region of the contact point is avoided and thus prevents welding of the switching contact.
  • the production can be greatly simplified and the manufacturing cost can be kept low.
  • the use of precious metals is minimal because the precious metal does not have to be used for mechanical tasks. In the area of the switching point there is no weldable metallic precious metal.
  • a part of the wire is scraped in an axial direction so that a segment is removed at the circular cross section of the wire.
  • the advantageous properties of the present invention are particularly useful when the contact element according to the invention in a switching device, such as an electromagnetic relay, is used, since the problem of welding is particularly critical here.
  • Fig. 1 shows a perspective view of the contact element 100 according to the invention using the example of a relay contact.
  • the actual electrical contact 102 is connected to a contact carrier 104 shown here only schematically by welding.
  • the contact surface 106 which comes into electrical connection with a mating contact during operation, is formed by a material which has no tendency to weld. According to the present embodiment, this is a silver-tin oxide composite material. But there are also other composite materials in question, for example, cadmium oxide, indium oxide, zinc oxide, copper oxide, antimony oxide, lanthanum oxide, magnesium oxide, manganese oxide, bismuth oxide, or tellurium oxide or a combination thereof.
  • a metal sheath 114 in particular a noble metal sheath, in the present case metallic silver, whereby the fixation of the contact 102 to the carrier 104 is possible by means of a simple welding.
  • Fig. 2 shows a perspective view of a preliminary stage of the contact 100, in which the semifinished product 110 according to the invention is fixed on the contact carrier 104.
  • the semifinished product consists of a cylindrical noble metal / metal oxide 112, which is partially surrounded by a metallic noble metal shell 114.
  • the jacket 114 which consists of a weldable material, is arranged in particular in the region of the weld 108. In the area of the later contact point 106, however, the jacket is removed.
  • the semifinished product 110 subsequently becomes transformed into the actual contact 102.
  • the preforming direction 116 is transverse to a longitudinal axis 118 of the wire piece.
  • Fig. 3 to 6 illustrate various special ways to free the later contact area 106 of the metallic silver layer.
  • Fig. 3 shows the blank, in which a core 112, which, as already mentioned, may for example consist of silver-tin oxide composite material, with a metallic noble metal shell 114 is surrounded.
  • the precious metal is, for example, metallic silver.
  • partial removal of the metallic cladding layer 114 may be accomplished by scraping a segment of the cross section.
  • Fig. 6 shows an embodiment in which as much as possible of the metallic silver sheath 114 is removed from the later contact area by performing two further shaving steps in a radially offset direction to the first shaving step.
  • Table 1 below shows the versions of the 4, 5 and 6 compared with the cross-sectional area, the respective material losses in the case that a wire diameter of about 1.2 mm is viewed with a silver coating of 40 microns.
  • Table 1 shows the versions of the 4, 5 and 6 compared with the cross-sectional area, the respective material losses in the case that a wire diameter of about 1.2 mm is viewed with a silver coating of 40 microns.
  • Table 1 shows the versions of the 4, 5 and 6 compared with the cross-sectional area, the respective material losses in the case that a wire diameter of about 1.2 mm is viewed with a silver coating of 40 microns.
  • Table 1 shows the versions of the 4, 5 and 6 compared with the cross-sectional area, the respective material losses in the case that a wire diameter of about 1.2 mm is viewed with a silver coating of 40 microns.
  • Table 1 shows the versions of the 4, 5 and 6 compared with the cross-sectional area, the respective material losses in the case that a wire diameter

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Contacts (AREA)
  • Manufacture Of Switches (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (16)

  1. Procédé de fabrication d'un élément de contact électrique (100), qui peut entrer en contact électrique avec un contact d'accouplement, le procédé comprenant les étapes suivantes :
    fourniture d'un fil (120) en un premier matériau électriquement conducteur (112) avec une gaine (114) en un second matériau électriquement conducteur ;
    retrait partiel de la gaine (114) selon une direction correspondant à la longueur d'un axe longitudinal de fil (118) ;
    formation d'au moins un produit semi-fini cylindrique (110) par division du fil dans une direction transversale à l'axe longitudinal de fil ;
    fixation du produit semi-fini sur un support de contact (104) de sorte que le second matériau électriquement conducteur soit lié au support de contact ;
    déformation du produit semi-fini soudé pour la formation de l'élément de contact (100), une surface de contact (106), accessible pour un contact d'accouplement, étant formée par le premier matériau électriquement conducteur.
  2. Procédé selon la revendication 1 dans lequel l'étape de retrait partiel de la gaine (114) selon une direction correspondant à la longueur d'un axe longitudinal de fil (118) comprend :
    le raclage d'une partie du fil dans une direction axiale de sorte qu'un segment soit retiré au niveau de la section transversale circulaire du fil.
  3. Procédé selon la revendication 2 dans lequel l'étape de retrait partiel du revêtement selon une direction correspondant à la longueur d'un axe longitudinal de fil comprend :
    le raclage d'une partie du fil dans une direction axiale, décalée d'un angle radial défini par rapport à l'étape de raclage précédente, de sorte qu'au moins un autre segment soit retiré au niveau de la section transversale circulaire du fil.
  4. Procédé selon la revendication 1 dans lequel l'étape de retrait partiel du revêtement selon une direction correspondant à la longueur d'un axe longitudinal de fil comprend :
    la division du fil dans une direction axiale de sorte que la section transversale circulaire du fil soit divisée.
  5. Procédé selon une des revendications précédentes dans lequel le premier matériau conducteur ne peut pas être soudé.
  6. Procédé selon la revendication 5 dans lequel le premier matériau conducteur comprend un alliage métal noble/oxyde métallique.
  7. Procédé selon une des revendications précédentes dans lequel le second matériau conducteur peut être soudé.
  8. Procédé selon la revendication 7 dans lequel le second matériau conducteur comprend un métal noble élémentaire.
  9. Procédé selon une des revendications précédentes dans lequel l'élément de contact (100) est un contact pour un relais électromagnétique.
  10. Procédé selon une des revendications précédentes dans lequel l'étape de fixation du produit semi-fini (110) sur le support de contact (104) s'effectue par soudage.
  11. Procédé selon une des revendications précédentes dans lequel, à l'étape de fixation du produit semi-fini sur le support de contact, le produit semi-fini cylindrique (110) est fixé avec sa surface de gaine cylindrique sur le support de contact de telle sorte que la zone dans laquelle le revêtement est retiré soit opposée au support de contact.
  12. Élément de contact électrique, pouvant entrer en contact électrique avec un contact d'accouplement, dans lequel l'élément de contact (100) est fabriqué au moyen d'un procédé selon une des revendications précédentes.
  13. Produit semi-fini pour la fabrication d'un élément de contact électrique, pouvant être obtenu selon une ou plusieurs des revendications 1 à 12, dans lequel le produit semi-fini présente un noyau (112) en un premier matériau électriquement conducteur et une gaine (114) en un second matériau électriquement conducteur et dans lequel la gaine est retirée au moins partiellement selon une direction correspondant à la longueur d'un axe longitudinal (118) du produit semi-fini.
  14. Produit semi-fini selon la revendication 13 dans lequel le produit semi-fini est de forme cylindrique.
  15. Utilisation du produit semi-fini selon la revendication 13 ou 14 pour la fabrication de contacts électriques.
  16. Relais électromagnétique ayant au moins un élément de contact commutable selon la revendication 12.
EP11700420.0A 2010-01-15 2011-01-14 Contact électrique et procédé pour sa fabrication Not-in-force EP2524384B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US29553010P 2010-01-15 2010-01-15
DE102010014745A DE102010014745B4 (de) 2010-01-15 2010-04-13 Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements
PCT/EP2011/050482 WO2011086167A1 (fr) 2010-01-15 2011-01-14 Élément de contact électrique et procédé de fabrication d'un élément de contact électrique

Publications (2)

Publication Number Publication Date
EP2524384A1 EP2524384A1 (fr) 2012-11-21
EP2524384B1 true EP2524384B1 (fr) 2016-11-30

Family

ID=44314026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11700420.0A Not-in-force EP2524384B1 (fr) 2010-01-15 2011-01-14 Contact électrique et procédé pour sa fabrication

Country Status (8)

Country Link
US (1) US8749330B2 (fr)
EP (1) EP2524384B1 (fr)
JP (2) JP2013517594A (fr)
CN (1) CN102782787B (fr)
BR (1) BR112012017590B1 (fr)
DE (1) DE102010014745B4 (fr)
ES (1) ES2613615T3 (fr)
WO (1) WO2011086167A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2644723B1 (fr) * 2012-03-26 2017-01-18 Umicore AG & Co. KG Matière active composite
CN104810178B (zh) * 2015-03-30 2017-03-15 宁波金点电子有限公司 一种三复合电触点制造装置
US10446336B2 (en) 2016-12-16 2019-10-15 Abb Schweiz Ag Contact assembly for electrical devices and method for making
CN112059168B (zh) * 2020-08-08 2022-07-05 浙江福达合金材料科技有限公司 基于纳米银线改性和3d梯度打印制备银金属氧化物电接触材料的方法及其产品
CN113192781B (zh) * 2021-03-17 2024-03-29 南京美铭信息技术服务有限公司 一种可调式涂层刮除电触点半成品制备装置

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US2433687A (en) * 1943-09-27 1947-12-30 Metals & Controls Corp Electrical contact
US2434992A (en) * 1943-09-27 1948-01-27 Metals & Controls Corp Electrical contact
DE2036373A1 (de) * 1970-07-17 1972-01-20 Siemens Ag Schaltstueck fuer elektrische schalter
US3775067A (en) * 1971-12-06 1973-11-27 Textron Inc Copper backed electrical contact
CH607729A5 (en) * 1976-09-21 1978-10-13 Rau Fa G Contact body and a production method for said contact body
US4706383A (en) * 1986-10-27 1987-11-17 Honeywell Inc. Electrical contact assembly with composite contact construction
JP2721248B2 (ja) * 1989-07-21 1998-03-04 田中貴金属工業株式会社 複合接点帯材の製造方法
EP0508055B1 (fr) * 1991-04-12 1997-05-02 Mitsubishi Materials Corporation Matériau pour contacts électriques formé d'oxides métalliques à base d'argent
DE19503182C1 (de) * 1995-02-01 1996-05-15 Degussa Sinterwerkstoff auf der Basis Silber-Zinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung
DE19503184C1 (de) * 1995-02-01 1996-05-02 Degussa Werkstoff für elektrische Kontakte aus Silber-Kohlenstoff
DE19607183C1 (de) * 1996-02-27 1997-04-10 Degussa Gesinterter Silber-Eisen-Werkstoff für elektrische Kontakte und Verfahren zu seiner Herstellung
DE10012250B4 (de) * 2000-03-14 2006-06-01 Umicore Ag & Co. Kg Kontaktwerkstoffe auf Basis Silber-Eisen-Kupfer
DE10017282C2 (de) 2000-04-06 2002-02-14 Omg Ag & Co Kg Verfahren zur Herstellung von Verbundpulver auf Basis Siler-Zinnoxid und deren Verwendung zur Herstellung von Kontaktwerkstoffen
EP1505164B1 (fr) * 2003-08-08 2009-04-29 Mitsubishi Materials C.M.I. Corporation Procédé de fabrication d'un contact électrique à conductibilité électrique élevée pour un relais électromagnétique compact et contact électrique produit
JP5101504B2 (ja) 2005-08-12 2012-12-19 ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト 銀−炭素をベースとする材料及びその製造方法
US7566437B2 (en) * 2006-03-31 2009-07-28 Umicore Ag & Co. Kg Process for manufacture of silver-based composite powders for electrical contact materials and composite powders so produced
DE102007040171A1 (de) * 2007-08-22 2009-02-26 Siemens Ag Kontakthebel für einen Leistungsschalter
FR2931303A1 (fr) * 2008-05-15 2009-11-20 Daniel Bernard Contact electrique et son procede de fabrication associe

Also Published As

Publication number Publication date
JP6280524B2 (ja) 2018-02-14
CN102782787A (zh) 2012-11-14
DE102010014745B4 (de) 2011-09-22
CN102782787B (zh) 2016-02-24
US20130002380A1 (en) 2013-01-03
DE102010014745A1 (de) 2011-07-21
JP2013517594A (ja) 2013-05-16
US8749330B2 (en) 2014-06-10
JP2015201454A (ja) 2015-11-12
ES2613615T3 (es) 2017-05-24
WO2011086167A1 (fr) 2011-07-21
BR112012017590A2 (pt) 2016-08-16
EP2524384A1 (fr) 2012-11-21
BR112012017590B1 (pt) 2020-03-31

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