EP0855727B1 - Support for bridging contact - Google Patents

Support for bridging contact Download PDF

Info

Publication number
EP0855727B1
EP0855727B1 EP97122243A EP97122243A EP0855727B1 EP 0855727 B1 EP0855727 B1 EP 0855727B1 EP 97122243 A EP97122243 A EP 97122243A EP 97122243 A EP97122243 A EP 97122243A EP 0855727 B1 EP0855727 B1 EP 0855727B1
Authority
EP
European Patent Office
Prior art keywords
contact link
contact
holder according
contact bridge
intermediate 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.)
Expired - Lifetime
Application number
EP97122243A
Other languages
German (de)
French (fr)
Other versions
EP0855727A2 (en
EP0855727A3 (en
Inventor
Horst Goerke
Volker Blechacz
Peter Willerscheidt
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.)
Eaton Industries GmbH
Original Assignee
Moeller 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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP0855727A2 publication Critical patent/EP0855727A2/en
Publication of EP0855727A3 publication Critical patent/EP0855727A3/en
Application granted granted Critical
Publication of EP0855727B1 publication Critical patent/EP0855727B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00

Definitions

  • the invention relates to a contact bridge holder according to the preamble of Claim 1. It is used in electrical switching devices, in particular in switching devices that switch frequently, such as contactors.
  • the invention is therefore based on the object, both mechanically and to also specify thermally resilient contact bridge holder, the one requires less manufacturing effort.
  • Coatings on the contact bridge can be used as intermediate elements and / or the associated contact areas of the contact bridge support serve.
  • Another embodiment of the intermediate element is one in the corresponding Area of the window-like outbreaks stored platelet, which in advantageous training be provided with a heat-resistant coating can. With such platelets, the switching device can withstand different heat loads be adjusted.
  • As an intermediate element or coating suitable for several materials including PVD (physical vapor deposition) hard layers, such as. made of titanium, chrome, titanium-carbon or titanium-aluminum nitride.
  • a contactor Contact bridge bracket 2 consists of a contact bridge support 4, the with a window-like cutout 6 for receiving a metallic contact bridge 8 is provided.
  • the contact bridge 8 is between one another Contact bridge 8 and contact bridge support 4 supporting contact spring 10 slidably mounted in the contact bridge support 4.
  • Several of the same kind Contact bridge mounts are through openings 12 of their contact bridge carriers 4 connected to a contact drive, not shown.
  • the intermediate element 28 advantageously consists of a highly cross-linked material, for example made of thermosetting material or glass fiber.
  • the intermediate element 28 can also have a coating evaporated heat-resistant material facing the plant areas 26 Be side of the contact bridge 8.

Landscapes

  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Motor Or Generator Frames (AREA)
  • Contacts (AREA)
  • Slide Switches (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

The contact bridge holder for electrical and especially electromagnetic switchgear, has a flat intermediate unit (28) of heat-resistant material between the laying zones (26) of the contact bridge carrier (4) and the contact bridge (8) when the contact system (8, 14, 26) is open. The intermediate unit (28), or intermediate cladding, is of glass fibre material or at least a hard layer applied by physical vapour deposition.

Description

Die Erfindung betrifft eine Kontaktbrückenhalterung nach dem Oberbegriff des Anspruches 1. Sie findet Anwendung in elektrischen Schaltgeräten, insbesondere in häufig schaltenden Schaltgeräten, wie Schützen.The invention relates to a contact bridge holder according to the preamble of Claim 1. It is used in electrical switching devices, in particular in switching devices that switch frequently, such as contactors.

Es ist allgemein bekannt, daß Kontaktbrückenhalterungen in häufig schaltenden Schaltgeräten sowohl erheblichen thermischen als auch hohen mechanischen Belastungen ausgesetzt sind. Aus der Druckschrift DE 30 30 702 C2 ist eine Kontaktbrückenhalterung für ein elektromagnetisches Schütz bekannt. Diese besteht aus einem Kontaktbrückenträger aus thermoplastischem Material und weist fensterartige Ausbrüche zur Aufnahme von federnd gelagerten Kontaktbrücken auf. In den Ausbrüchen sind rahmenartige Auskleidungen aus duroplastischem Material angeordnet. Der Kontaktbrückenträger ist hinsichtlich seiner äußeren Abmessungen weitgehend form- und maßstabil und weist gute Gleiteigenschaften aufgrund seines Werkstoffes auf. In denjenigen Bereichen, in denen er besonderen thermischen Belastungen durch die insbesondere bei Kontaktöffnung erhitzten Kontaktbrücken ausgesetzt ist, werden diese Belastungen von den genannten Auskleidungen aus duroplastischem Material soweit aufgefangen, daß Verformungen des thermoplastischen Kontaktbrückenträgers weitgehend vermieden werden. Die rahmenartigen Auskleidungen können entweder in die Fenster des Kontaktbrückenträgers eingeschnappt oder von diesem teilweise umverspritzt werden. Der technologische Aufwand zur Herstellung einer derartigen Kontaktbrückenhalterung ist allerdings zu aufwendig. It is common knowledge that contact bridge mounts are used in frequently switching Switchgear both significant thermal and high mechanical Are exposed to loads. From document DE 30 30 702 C2 is one Contact bridge holder for an electromagnetic contactor known. This consists of a contact bridge carrier made of thermoplastic material and has window-like cutouts to accommodate spring-loaded contact bridges on. In the cutouts are frame-like linings made of thermosetting Material arranged. The contact bridge support is regarding its outer dimensions largely stable in shape and size and has good Sliding properties due to its material. In those areas in which he has special thermal loads due to in particular Contact opening is exposed to heated contact bridges, these loads as far as the above-mentioned linings made of thermosetting material caught that deformation of the thermoplastic contact bridge carrier largely avoided. The frame-like linings can either snapped into the windows of the contact bridge support or from this can be partially overmoulded. The technological effort to manufacture such a contact bridge holder is too expensive.

Der Erfindung liegt daher die Aufgabe zugrunde, eine sowohl mechanisch als auch thermisch belastbare Kontaktbrückenhalterung anzugeben, die einen geringeren Herstellungsaufwand erfordert.The invention is therefore based on the object, both mechanically and to also specify thermally resilient contact bridge holder, the one requires less manufacturing effort.

Ausgehend von einer Kontaktbrückenhalterung der eingangs genannten Art wird die Aufgabe erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Durch die hitzebeständigen flächigen Zwischenelemente, die zwischen den der zugehörigen Festkontakten zugewandten Seite jeder Kontaktbrücke und den zugehörigen Anlagebereichen der fensterartigen Ausbrüche des Kontaktbrückenträgers wird in technologisch einfacher Weise ein Anbacken, Anschmelzen oder Verschweißen zwischen den erhitzen, in ihre Offenstellung bewegten Kontaktbrücken und dem Kontaktbrückenträger sowie eine Verformung des Kontaktbrückenträgers in diesen Bereichen verhindert. Sollte das Schaltgerät mit gegen hohe Fehlerströme schützenden elektromagnetischen Schnellauslösern versehen sein, so wird außerdem mit der erfindungsgemäßen Kontaktbrückenhalterung ein Anbacken der öffnenden Schlagstößel der Schnellauslöser an die Kontaktbrücken wirksam verhindert.Starting from a contact bridge holder of the type mentioned the task according to the invention by the characterizing features of Claim 1 solved. Due to the heat-resistant flat intermediate elements, that between the side of the associated fixed contacts facing each Contact bridge and the associated areas of the window-like breakouts the contact bridge carrier is a technologically simple Baking, melting or welding between the heat in your Open position moving contact bridges and the contact bridge carrier as well prevents deformation of the contact bridge support in these areas. If the switchgear is equipped with electromagnetic protection against high residual currents Fast triggers are provided, so will also with the invention Contact bridge holder a baking of the opening plunger the quick release on the contact bridges effectively prevented.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen. Als Zwischenelemente können Beschichtungen auf der Kontaktbrücke und/oder den zugehörigen Anlagebereichen des Kontaktbrückenträgers dienen. Eine weitere Ausführungsart des Zwischenelementes ist eine im entsprechenden Bereich der fensterartigen Ausbrüche gelagertes Plättchen, das in vorteilhafter Ausbildung mit einer hitzebeständigen Beschichtung versehen sein kann. Mit derartigen Plättchen kann das Schaltgerät an unterschiedliche Hitzebelastungen angepaßt werden. Als Zwischenelement bzw. Beschichtung sind mehrere Materialien geeignet, u.a. PVD -(physical vapor deposition)-Hartstoffschichten, wie z.B. aus Titan-, Chrom-, Titan-Kohlenstoff- oder Titan-Aluminium-Nitrid. Further advantageous embodiments of the invention are the subclaims refer to. Coatings on the contact bridge can be used as intermediate elements and / or the associated contact areas of the contact bridge support serve. Another embodiment of the intermediate element is one in the corresponding Area of the window-like outbreaks stored platelet, which in advantageous training be provided with a heat-resistant coating can. With such platelets, the switching device can withstand different heat loads be adjusted. As an intermediate element or coating suitable for several materials, including PVD (physical vapor deposition) hard layers, such as. made of titanium, chrome, titanium-carbon or titanium-aluminum nitride.

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. In der zugehörigen Zeichnung zeigt

Figur 1:
eine erfindungsgemäße Kontaktbrückenhalterung in Seitenansicht und im Schnitt I-I nach Fig. 2;
Figur 2:
die Kontaktbrückenhalterung im Längsschnitt II-II nach Fig. 1;
Figur 3:
die Einzelheit A aus Fig. 1.
The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing shows
Figure 1:
a contact bridge holder according to the invention in side view and in section II of FIG. 2;
Figure 2:
the contact bridge holder in longitudinal section II-II of FIG. 1;
Figure 3:
detail A from FIG. 1.

Die für einen Pol eines Schaltgerätes, insbesondere eines Schützes, dargestellte Kontaktbrückenhalterung 2 besteht aus einem Kontaktbrückenträger 4, der mit einem fensterartigen Ausbruch 6 zur Aufnahme einer metallischen Kontaktbrücke 8 versehenen ist. Die Kontaktbrücke 8 ist mittels einer sich zwischen Kontaktbrücke 8 und Kontaktbrücketräger 4 abstützenden Kontaktfeder 10 verschieblich in dem Kontaktbrückenträger 4 gelagert. Mehrere gleichartige Kontaktbrückenhalterungen sind über Durchbrüche 12 ihrer Kontaktbrückenträger 4 mit einem nicht dargestellten Kontaktantrieb verbunden. Beim Einschalten des Schaltgerätes werden die beweglichen Kontaktstücke 14, 16 der Kontaktbrücke 8 entgegen der Federkraft der Kontaktfeder 10 mit den entsprechenden feststehenden Kontaktstücken 18, 20 von Anschlußleitern 22, 24 verbunden. Der Kontaktbrückenträger 4 besteht aus einem Formstoff mit guten Gleiteigenschaften und hoher Maßstabilität, insbesondere aus thermoplastischem Material. Zwischen den Anlagebereichen 26 des Kontaktbrückenträgers 4 und der Kontaktbrücke 8 ist ein als Plättchen ausgebildetes Zwischenelement 28 aus hitzebeständigem Material in dem Ausbruch 6 gelagert. Nach Öffnung des Kontaktsystems 8, 14 ... 24 wird durch das Zwischenelement 28 verhindert, daß die infolge der bei Kontaktöffnung auftretenden Lichtfunken oder - bögen zwischen den Schaltstücken 14, 18 und 16, 20 die daraus resultierende Hitzeentwicklung sich nicht von der erhitzten Kontaktbrücke 8 auf die Anlagebereiche 26 des hitzeempfindlichen Kontaktbrücketrägers 4 auswirken kann. Das Zwischenelement 28 besteht vorteilhaft aus einem hochvernetzten Material, beispielsweise aus duroplastischem Material, oder aus Glasfiber.The shown for a pole of a switching device, in particular a contactor Contact bridge bracket 2 consists of a contact bridge support 4, the with a window-like cutout 6 for receiving a metallic contact bridge 8 is provided. The contact bridge 8 is between one another Contact bridge 8 and contact bridge support 4 supporting contact spring 10 slidably mounted in the contact bridge support 4. Several of the same kind Contact bridge mounts are through openings 12 of their contact bridge carriers 4 connected to a contact drive, not shown. When switching of the switching device, the movable contact pieces 14, 16 of the Contact bridge 8 against the spring force of the contact spring 10 with the corresponding fixed contact pieces 18, 20 of connecting conductors 22, 24 connected. The contact bridge support 4 consists of a molding material with good Sliding properties and high dimensional stability, especially made of thermoplastic Material. Between the contact areas 26 of the contact bridge support 4 and the contact bridge 8 is an intermediate element designed as a plate 28 stored in the cutout 6 made of heat-resistant material. After opening of the contact system 8, 14 ... 24 is prevented by the intermediate element 28, that the light sparks or - arcs between the contact pieces 14, 18 and 16, 20 the resulting Heat does not develop from the heated contact bridge 8 to the system areas 26 of the heat-sensitive contact bridge carrier 4 can affect. The intermediate element 28 advantageously consists of a highly cross-linked material, for example made of thermosetting material or glass fiber.

Das Zwischenelement 28 kann andererseits auch eine Beschichtung aus aufgedampftem hitzebeständigen Material der den Anlagebereichen 26 zugewandten Seite der Kontaktbrücke 8 sein.On the other hand, the intermediate element 28 can also have a coating evaporated heat-resistant material facing the plant areas 26 Be side of the contact bridge 8.

Claims (8)

  1. Contact link holder for electrical switching devices, in particular for electromagnetic switching devices, comprising at least one contact link support (4) which is provided with a window-like cutout (6) in order to hold a respectively associated metallic contact link (8) such that it is mounted in a sprung manner, and which contact link support (4) is composed of a moulded material having good sliding characteristics and high dimensional stability, in particular a thermoplastic material, characterized in that, when the contact system (8, 14...24) is open, a flat intermediate element (28) composed of heat-resistant material is arranged between the adjoining areas (26) of the contact link support (4) and of the contact link (8).
  2. Contact link holder according to Claim 1, characterized in that the intermediate element (28) consists of a coating applied to the contact link (8).
  3. Contact link holder according to Claim 1 or 2, characterized in that the intermediate element consists of a coating applied in the adjoining areas (26) on the contact link support (4).
  4. Contact link holder according to one of Claims 1 to 3, characterized in that the intermediate element (28) consists of a small plate which is mounted in the window-like cutout (6) in the contact link support (4).
  5. Contact link holder according to Claim 4, characterized in that the small plate is provided with a heat-resistant coating.
  6. Contact link holder according to one of Claims 1 to 5, characterized in that the intermediate element or the coating consists of highly cross-linked material.
  7. Contact link holder according to one of Claims 1 to 5, characterized in that the intermediate element or the coating consists of glass-fibre material.
  8. Contact link holder according to Claim 2, 3 or 5, characterized in that the coating consists of at least one PVD hard material layer.
EP97122243A 1997-01-28 1997-12-17 Support for bridging contact Expired - Lifetime EP0855727B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29701312U DE29701312U1 (en) 1997-01-28 1997-01-28 Contact bridge bracket
DE29701312U 1997-01-28

Publications (3)

Publication Number Publication Date
EP0855727A2 EP0855727A2 (en) 1998-07-29
EP0855727A3 EP0855727A3 (en) 1999-02-17
EP0855727B1 true EP0855727B1 (en) 2001-10-24

Family

ID=8035077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97122243A Expired - Lifetime EP0855727B1 (en) 1997-01-28 1997-12-17 Support for bridging contact

Country Status (4)

Country Link
EP (1) EP0855727B1 (en)
AT (1) ATE207653T1 (en)
DE (2) DE29701312U1 (en)
ES (1) ES2166944T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755930A1 (en) * 1997-12-17 1999-06-24 Abb Patent Gmbh Contact pairing with double contact point for an electrical switching device
DE10005825C2 (en) * 2000-02-10 2002-01-10 Werner Lampert Low voltage electrical switch
DE10028559C1 (en) * 2000-06-09 2001-11-22 Siemens Ag Electromagnetic switching device, used as contactor, comprises contact with fixed contact pieces and moving contact bridge
DE112007003445A5 (en) * 2007-02-05 2010-01-21 Siemens Aktiengesellschaft Electromechanical switching device and use of an intermediate layer in an electromechanical switching device
JP6064262B2 (en) * 2012-04-09 2017-01-25 パナソニックＩｐマネジメント株式会社 Spring load adjustment structure for contact device and spring load adjustment method for contact device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445176B2 (en) * 1974-09-21 1976-11-18 Elmeg Elektro-Mechanik GmbH, 315OPeine CONTACT SPRING ARRANGEMENT IN RELAY
DE2833537C2 (en) * 1978-07-31 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Contact bridge arrangement
DE3030702C2 (en) * 1980-08-14 1984-08-09 Brown, Boveri & Cie Ag, 6800 Mannheim Electromagnetic contactor with a movable contact bridge support

Also Published As

Publication number Publication date
EP0855727A2 (en) 1998-07-29
DE59705071D1 (en) 2001-11-29
ATE207653T1 (en) 2001-11-15
DE29701312U1 (en) 1997-04-10
ES2166944T3 (en) 2002-05-01
EP0855727A3 (en) 1999-02-17

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