EP2524384A1 - Elektrisches kontaktelement und verfahren zur herstellung eines elektrischen kontaktelements - Google Patents
Elektrisches kontaktelement und verfahren zur herstellung eines elektrischen kontaktelementsInfo
- Publication number
- EP2524384A1 EP2524384A1 EP11700420A EP11700420A EP2524384A1 EP 2524384 A1 EP2524384 A1 EP 2524384A1 EP 11700420 A EP11700420 A EP 11700420A EP 11700420 A EP11700420 A EP 11700420A EP 2524384 A1 EP2524384 A1 EP 2524384A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- contact
- conductive material
- semifinished product
- contact element
- 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
Links
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.
- This object is solved by the subject matter of the independent patent claims.
- Advantageous developments of the present invention are the subject of the dependent claims.
- 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 03, 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 else nickel, if the metal is otherwise different from nickel.
- 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 03, 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 else nickel, if the metal is otherwise different from nickel.
- a metal composite material Particularly suitable as a metal composite material are described, for example, described in EP 508055, EP 1505164, EP 725154, EP 736885, EP 795367, DE 10012250, EP 1 142661, EP 1915765 and EP 2004349 and the documents cited therein.
- Particularly advantageous are the silver-based metal composites of EP 508055 and EP 1505164, to which reference is made.
- These are contact materials based on silver-tin oxide, which may additionally contain indium oxide, tellurium oxide, bismuth oxide, copper oxide, nickel oxide or mixtures thereof. Such materials can be produced by powder metallurgy or by internal oxidation.
- 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 is a schematic perspective view of a finished contact element
- FIG. 2 shows a perspective view of the welded-on semifinished product according to the invention before forming
- FIG. 1 is a schematic perspective view of a finished contact element
- Fig. 3 is a cross-section of the sheathed wire before cockroaches
- Fig. 6 shows a cross section of the wire after performing several Schabesiane.
- 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 shell 1 14 in particular a noble metal sheath, in the present case, metallic silver, before, whereby the fixation of the contact 102 on the carrier 104 via a simple welding is possible.
- FIG. 2 shows a perspective view of a preliminary stage of the contact 100, in which the semifinished product 1 10 according to the invention is fixed on the contact carrier 104.
- the semifinished product consists of a cylindrical noble metal / metal oxide core 1 12 which is partially surrounded by a metallic noble metal shell 14.
- the jacket 1 14, 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 1 10 is subsequently connected. Unless applied to the contact carrier 104, the semifinished product 1 10 is subsequently connected. . cid transformed into the actual contact 102. It should be noted that the preforming direction 1 16 extends transversely to a longitudinal axis 118 of the piece of wire.
- FIGS. 3 to 6 explain various special possibilities for freeing the later contact region 106 from the metallic silver layer.
- a section through the wire 120, from which the semifinished product 110 is produced by cutting transversely to its longitudinal axis is shown.
- Fig. 3 shows the blank, in which a core 1 12, which, as already mentioned, may for example consist of silver-tin oxide composite material, with a metallic noble metal sheath 1 14 is surrounded.
- the precious metal is, for example, metallic silver.
- the partial removal of the metallic cladding layer 1 14 can be done by scraping a segment of the cross section.
- FIG. 6 shows an embodiment in which as much as possible of the metallic silver sheath 14 is removed from the later contact region by carrying out two further shaving steps in a radially offset direction to the first shaving step.
- the production according to the invention of contact elements for example for switching or leading contacts on relays, on the one hand allows easy manufacturability by the direct welding of the silver-tin oxide contact material, but on the other hand a particularly low tendency to weld in the region of the actual electrical Contact ensures.
- the costs can be further reduced.
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)
Abstract
Description
Claims
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 (de) | 2010-01-15 | 2011-01-14 | Elektrisches kontaktelement und verfahren zur herstellung eines elektrischen kontaktelements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2524384A1 true EP2524384A1 (de) | 2012-11-21 |
| EP2524384B1 EP2524384B1 (de) | 2016-11-30 |
Family
ID=44314026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11700420.0A Not-in-force EP2524384B1 (de) | 2010-01-15 | 2011-01-14 | Elektrisches kontaktelement und verfahren zur herstellung eines elektrischen kontaktelements |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8749330B2 (de) |
| EP (1) | EP2524384B1 (de) |
| JP (2) | JP2013517594A (de) |
| CN (1) | CN102782787B (de) |
| BR (1) | BR112012017590B1 (de) |
| DE (1) | DE102010014745B4 (de) |
| ES (1) | ES2613615T3 (de) |
| WO (1) | WO2011086167A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2644723B1 (de) * | 2012-03-26 | 2017-01-18 | Umicore AG & Co. KG | Verbundwerkstoff |
| 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)
| 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 (de) * | 1991-04-12 | 1997-05-02 | Mitsubishi Materials Corporation | Metalloxidmaterial auf Silberbasis für elektrische Kontakte |
| DE19503184C1 (de) * | 1995-02-01 | 1996-05-02 | Degussa | Werkstoff für elektrische Kontakte aus Silber-Kohlenstoff |
| DE19503182C1 (de) * | 1995-02-01 | 1996-05-15 | Degussa | Sinterwerkstoff auf der Basis Silber-Zinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung |
| 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 |
| DE602004020844D1 (de) | 2003-08-08 | 2009-06-10 | Mitsubishi Materials C M I Corp | Verfahren zur Herstellung eines elektrischen Kontaktes mit hoher elektrischer Leitfähigkeit für ein elektromagnetisches Relais und damit hergestellter elektrischer Kontakt |
| DE502006007601D1 (de) | 2005-08-12 | 2010-09-16 | Umicore Ag & Co Kg | Werkstoff auf der basis silber-kohlenstoff und verfahren zu dessen herstellung |
| 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 |
-
2010
- 2010-04-13 DE DE102010014745A patent/DE102010014745B4/de not_active Expired - Fee Related
-
2011
- 2011-01-14 WO PCT/EP2011/050482 patent/WO2011086167A1/de not_active Ceased
- 2011-01-14 EP EP11700420.0A patent/EP2524384B1/de not_active Not-in-force
- 2011-01-14 JP JP2012548449A patent/JP2013517594A/ja not_active Withdrawn
- 2011-01-14 BR BR112012017590-4A patent/BR112012017590B1/pt active IP Right Grant
- 2011-01-14 ES ES11700420.0T patent/ES2613615T3/es active Active
- 2011-01-14 US US13/521,964 patent/US8749330B2/en active Active
- 2011-01-14 CN CN201180005794.5A patent/CN102782787B/zh active Active
-
2015
- 2015-06-16 JP JP2015120999A patent/JP6280524B2/ja active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011086167A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8749330B2 (en) | 2014-06-10 |
| BR112012017590B1 (pt) | 2020-03-31 |
| JP2013517594A (ja) | 2013-05-16 |
| CN102782787B (zh) | 2016-02-24 |
| JP6280524B2 (ja) | 2018-02-14 |
| US20130002380A1 (en) | 2013-01-03 |
| BR112012017590A2 (pt) | 2016-08-16 |
| EP2524384B1 (de) | 2016-11-30 |
| DE102010014745B4 (de) | 2011-09-22 |
| JP2015201454A (ja) | 2015-11-12 |
| CN102782787A (zh) | 2012-11-14 |
| DE102010014745A1 (de) | 2011-07-21 |
| WO2011086167A1 (de) | 2011-07-21 |
| ES2613615T3 (es) | 2017-05-24 |
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