EP1727168A2 - Pièce de contact, un disjoncteur basse tension avec pièce de contact et son procédé de fabrication - Google Patents

Pièce de contact, un disjoncteur basse tension avec pièce de contact et son procédé de fabrication Download PDF

Info

Publication number
EP1727168A2
EP1727168A2 EP06114219A EP06114219A EP1727168A2 EP 1727168 A2 EP1727168 A2 EP 1727168A2 EP 06114219 A EP06114219 A EP 06114219A EP 06114219 A EP06114219 A EP 06114219A EP 1727168 A2 EP1727168 A2 EP 1727168A2
Authority
EP
European Patent Office
Prior art keywords
contact piece
support
contact
circuit breaker
electrical contact
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.)
Withdrawn
Application number
EP06114219A
Other languages
German (de)
English (en)
Other versions
EP1727168A3 (fr
Inventor
Marc Liebetruth
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1727168A2 publication Critical patent/EP1727168A2/fr
Publication of EP1727168A3 publication Critical patent/EP1727168A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer
    • 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
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H2011/046—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by plating

Definitions

  • the invention relates to a contact piece consisting of a metallic carrier and a contact piece attached to the carrier of a metal alloy.
  • the invention further relates to a low-voltage circuit breaker with such a contact piece and two methods for the production of contact pieces.
  • EP 1 065 683 B1 is already a generic contact in the form of a fixed contact piece of a low-voltage circuit breaker known.
  • the carrier is formed by an upper connecting rail.
  • this terminal bar - which in practice is coated with a layer of silver to keep the contact resistance when contacting an associated busbars of a switchgear low - is fixed by soldering or welding a contact piece support made of a metal alloy.
  • the connecting rail is coated in practice with the layer of silver, before the contact piece support is permanently attached to its front side.
  • the invention is based on the object to make the switching piece cheaper.
  • This object is achieved according to the invention in that the entire surface of the contact piece is coated with a layer of tin.
  • the contact piece provided with the tin layer does not need to be subjected to any subsequent soldering or welding process anymore. This reliably avoids overheating of the tin layer, which could lead to discoloration and blistering.
  • a contact piece which has a support formed by a metallic rivet on which a contact piece support made of pure tungsten is soldered by means of a copper or silver brazing alloy.
  • the carrier and the solder layer are coated with a layer of tin (Sn). This ensures that the applied tin dissolved in favor of the noble-looking tungsten of the contact point pad and thus the tungsten itself is protected against corrosion.
  • the contact piece support in the subject matter of the present invention does not consist of pure tungsten but of a metal alloy, so that the problem of corrosion of the contact piece support does not occur at all to the extent mentioned above.
  • the new contact piece may be formed in particular as a switching element of a low-voltage circuit breaker by the carrier is designed as a connection rail of the low-voltage circuit breaker, which is electrically connected by means of a screw with at least one associated busbar of a switchgear, wherein the contact piece support on one of the end sides of the connecting rail is attached.
  • the contact piece according to the invention can be produced in a simple manner by firstly permanently connecting a contact piece made of a metal alloy with a metallic carrier, in particular by soldering or welding, to form a contact piece blank. Subsequently, the entire surface of the workpiece blank - so both the exposed surface of the carrier and the exposed surface of the contact piece support - galvanized.
  • a contact piece support which serves as a contact surface
  • a contact piece can be produced in the following alternative manner: A contact piece consisting of a metal alloy is provided with a metallic support, in particular by soldering or welding , permanently connected to a switching piece blank. Subsequently, the serving as a contact surface portion of the contact piece support is covered with a cover layer. Thereafter, the entire surface of the workpiece blank including the capped portion of the contactor pad is electroformed. Finally, the tinned cover layer is removed to expose the contact surface serving as the portion of the contact point pad.
  • the low-voltage circuit breaker 1 has a housing consisting of a first housing shell 2 and a second housing shell 3.
  • a consisting of a movable contact piece 4 and a fixed contact piece 5 switching contact arrangement and an arc quenching chamber 6 are added.
  • the movable contact piece 4 consists of a pivotable contact carrier 7 and a plurality of supported on the contact carrier 7 and arranged parallel to each other contact levers 8 (in the figure 1, only one contact lever is visible).
  • the contact lever 8 are biased in a known manner by contact force springs 9.
  • Flexible conductors 10 are used to connect the contact lever 8 with a lower connecting rail 11.
  • the movable switching piece 4 associated fixed contact piece 5 has a support in the form of an upper connecting rail 12 and a fixed to the end face of the connecting rail 12 by soldering or welding the switch piece support 13.
  • the contact piece support 13 consists of a metal alloy, which is in particular a silver-tungsten alloy. However, the metal alloy may also contain, for example, nickel and / or other additional metals.
  • the housing shell 2 of the low-voltage circuit breaker has a lower passage opening 14 and an upper passage opening 15.
  • connection bars which can consist of copper, aluminum, bronze or brass, for example, are the switch-side connection points to external busbars of switchgear.
  • the application of the tin layer 25, takes place at the switching piece 5 according to the invention only after attaching the contact piece support 13 on the connecting rail 12. This is a subsequent overheating of the tin layer 25 of the contact piece 5 - as would be the case during soldering or welding - avoided.
  • the new contact piece 5 is therefore free from discoloration, bubbles or craters produced.
  • a section 27 of a contact piece support 28 serving as a contact surface is not covered by a tin layer 29, such a contact piece 26 is referred to below
  • the consisting of a metal alloy contact piece support 28 is permanently connected to a metallic support in the form of a connecting rail 30, in particular by soldering or welding, to form a blank workpiece.
  • serving as a contact surface portion 27 of the contact piece support 28 is covered with a cover layer 31.
  • the entire surface of the workpiece blank including the top layer 31 provided with the portion of the contact piece pad is galvanized.
  • the tinned cover layer 31 is removed to expose the portion of the contact piece support serving as the contact surface.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Contacts (AREA)
EP06114219A 2005-05-25 2006-05-19 Pièce de contact, un disjoncteur basse tension avec pièce de contact et son procédé de fabrication Withdrawn EP1727168A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510024973 DE102005024973A1 (de) 2005-05-25 2005-05-25 Schaltstück, Niederspannungs-Leistungsschalter mit einem Schaltstück sowie Verfahren zur Herstellung eines Schaltstücks

Publications (2)

Publication Number Publication Date
EP1727168A2 true EP1727168A2 (fr) 2006-11-29
EP1727168A3 EP1727168A3 (fr) 2007-12-12

Family

ID=36992492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114219A Withdrawn EP1727168A3 (fr) 2005-05-25 2006-05-19 Pièce de contact, un disjoncteur basse tension avec pièce de contact et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP1727168A3 (fr)
DE (1) DE102005024973A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547947A (en) * 1946-06-17 1951-04-10 Fansteel Metallurgical Corp Contact assembly
AT251684B (de) * 1963-09-11 1967-01-10 Licentia Gmbh Elektrisches Kontaktstück
US3519543A (en) * 1967-10-27 1970-07-07 Talon Inc Process for electrolytically cleaning and polishing electrical contacts
EP1065683A2 (fr) * 1999-06-30 2001-01-03 Siemens Aktiengesellschaft Disjonteur avec des bornes pour plusieurs intensités nominales
DE10318223A1 (de) * 2003-04-22 2004-12-02 Louis Renner Gmbh Kontaktstück aus Wolfram mit einer korrosionshemmenden Schicht aus Unedelmetall

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173574B (de) * 1962-08-13 1964-07-09 Licentia Gmbh Elektrisches Kontaktstueck
JPH01283780A (ja) * 1988-05-11 1989-11-15 Furukawa Electric Co Ltd:The ＳｎまたはＳｎ合金被覆材料
JP2000030558A (ja) * 1998-07-14 2000-01-28 Furukawa Electric Co Ltd:The 電気接触子用材料とその製造方法
JP4112426B2 (ja) * 2003-05-14 2008-07-02 三菱伸銅株式会社 めっき処理材の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2547947A (en) * 1946-06-17 1951-04-10 Fansteel Metallurgical Corp Contact assembly
AT251684B (de) * 1963-09-11 1967-01-10 Licentia Gmbh Elektrisches Kontaktstück
US3519543A (en) * 1967-10-27 1970-07-07 Talon Inc Process for electrolytically cleaning and polishing electrical contacts
EP1065683A2 (fr) * 1999-06-30 2001-01-03 Siemens Aktiengesellschaft Disjonteur avec des bornes pour plusieurs intensités nominales
DE10318223A1 (de) * 2003-04-22 2004-12-02 Louis Renner Gmbh Kontaktstück aus Wolfram mit einer korrosionshemmenden Schicht aus Unedelmetall

Also Published As

Publication number Publication date
EP1727168A3 (fr) 2007-12-12
DE102005024973A1 (de) 2006-11-30

Similar Documents

Publication Publication Date Title
EP0374648B1 (fr) Dispositif de connexion d'un câble électrique
EP3064034B1 (fr) Tranche comprenant au moins deux éléments de raccordement électriques et conducteur de liaison
EP1817819A1 (fr) Procede pour etablir une liaison electrique entre un conducteur en aluminium et un element de contact
DE10138204B4 (de) Elektrischer Kontakt
EP1947738A1 (fr) Borne d'alimentation et contact à ressort à lames correspondant
DE10336517B4 (de) Verbindungsstruktur zwischen Busschienen und Relaisanschlüssen
EP3771042B1 (fr) Fabrication d'un raccordement plat entre un conducteur électrique et une pièce de contact
EP2437360A1 (fr) Contact entre deux étages
EP3451455B1 (fr) Procédé de fabrication d'une liaison électrique et une ligne électrique
EP3206258B1 (fr) Système de fabrication d'un raccordement électrique, raccordement électrique et son procédé de fabrication
DE4416104C2 (de) Schaltkontaktanordnung eines elektrischen Leistungsschalters
DE1621258B2 (de) Kontaktstueck aus einem leitenden traeger aus einem unedlen metall und einem dreischichtigen verbundkontaktkoerper sowie dessen herstellungsverfahren
EP0516984A1 (fr) Dispositif pour connecter deux conducteurs de cuivre ou d'aluminium conduisant le courant
EP1727168A2 (fr) Pièce de contact, un disjoncteur basse tension avec pièce de contact et son procédé de fabrication
EP2628216B1 (fr) Élément de contact contenant un métal noble sur un support élastique à moment de flexion symétrique en rotation
EP1508941B1 (fr) Connecteur électrique avec réservoir de brasure dans une région de contact
DE2423932B2 (de) Bauelement fuer schalt- und/oder trennleisten in verteilern fuer fernmeldeanlagen, insbesondere fernsprechvermittlungsanlagen
EP2425498B1 (fr) Système de liaison pour une carte de circuit imprimé
DE1621258C3 (de) Kontaktstack aus einem leitenden Träger aus einem unedlen Metall und einem dreischichtigen Verbundkontaktkörper sowie dessen Herstellungsverfahren
DE102005031880B3 (de) Schalter
EP1385183B1 (fr) Dispositif de contact de commutation comportant un levier de contact et un conducteur flexible
DE102016226103B3 (de) Verfahren zur Herstellung einer elektrischen Verbindung und elektrische Verbindung zwischen zwei Komponenten
EP0660444B1 (fr) Distributeur électrique à basse tension
DE3011821C2 (de) Verfahren zum Auflöten zweier Metallteile
DE10321713B4 (de) Verfahren zum Verbinden eines schichtüberzogenen Drahts mit einem Werkstück

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080613

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566