EP0157934B1 - Befestigungsanordnung für Lichtbogenkammern - Google Patents

Befestigungsanordnung für Lichtbogenkammern Download PDF

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Publication number
EP0157934B1
EP0157934B1 EP84115388A EP84115388A EP0157934B1 EP 0157934 B1 EP0157934 B1 EP 0157934B1 EP 84115388 A EP84115388 A EP 84115388A EP 84115388 A EP84115388 A EP 84115388A EP 0157934 B1 EP0157934 B1 EP 0157934B1
Authority
EP
European Patent Office
Prior art keywords
rubber
arrangement according
bushing
quick
spring
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
Application number
EP84115388A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0157934A1 (de
Inventor
Günther Dipl.-Ing. Eckert
Franz Singer
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
Priority to AT84115388T priority Critical patent/ATE33082T1/de
Publication of EP0157934A1 publication Critical patent/EP0157934A1/de
Application granted granted Critical
Publication of EP0157934B1 publication Critical patent/EP0157934B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes

Definitions

  • the invention relates to a fastening arrangement for arcing chambers on lower parts of switching devices by means of spring-elastic tendons.
  • the arc chambers are pressed onto the lower part via springs.
  • a spiral spring is guided over a quick-release hook.
  • a leaf spring is used for pressing.
  • the springs provided here can compensate for tolerances in the manufacture of the arc chambers in order to avoid damage to the arc chambers when they are fastened, but they cannot be used, at least not reliably, to allow the arc chamber to breathe, i.e. have the arc chamber lifted off the lower part for a short time if high overpressures occur.
  • the spring were made weak, the spring would be compressed to a block dimension at high overpressure, so that the impact exerted on the arc chamber can damage the arc chamber. If the spring is made too hard, the actuating force for locking the arc chamber becomes too great and no relief is to be expected with slight overpressures.
  • the invention is intended to provide an arrangement of the type mentioned above, in which it is possible to reduce overpressures in arcing chambers by means of switching gases without fear of destruction of the arcing chamber or of the fastening arrangement.
  • This object is achieved in a simple manner in that the spring pressure specimen elastic tendon consists of two series-connected resilient members of different spring characteristics, which are dimensioned such that only the member with the weaker spring characteristic can go to block size with a corresponding overpressure. It has proven to be advantageous if one spring element is a spiral compression spring and the other is a rubber element.
  • the rubber element is a rubber bushing guided around a fastening bolt, the outer dimension of which is smaller than the dimension of the recess in the arcing chamber holding it, the deformation of the rubber when the arcing chamber is lifted off, causing the rubber to bear against the inner wall of the recess, so that in addition friction damping when moving the fastening bolt in the rubber bushing is achieved, since the rubber bushing reduces its inner diameter when pressed together.
  • a simple design results if the series connection of the spiral compression spring and rubber bushing is guided on the fastening bolt.
  • the rubber bush only needs to be threaded onto the quick-release hook according to the known utility model.
  • the bushing can be made from EPDM (ethylene propylene diene rubber) or siloprene (silicone rubber). However, silicone rubber has proven to be particularly advantageous. If the bushing is shaped like a barrel on the outside, the desired spring and damping characteristics of the rubber bushing can easily be predetermined.
  • the switching device shown in the drawing consists of the lower part 1 and the arc chamber 2 placed thereon.
  • the quick release hook 5 is bolt-shaped and has a screw head 6;
  • a spiral compression spring 8 is threaded onto the shaft 7.
  • a rubber bushing 10 adjoins this with the interposition of a washer 9.
  • the rubber bushing 10 rests on the lower boundary 11 of the cylindrical recess 3.
  • the spiral compression spring 8 is supported at the lower end of the head 6.
  • the cylindrical bolt with head 6 is by inserting a pin 12 to the quick-release hook 5.
  • the groove guide for the pin 12 in the lower part 1 and possibly also in the arc chamber are not shown in detail.
  • the extension 13 of the recess 14 in the lower part 1 serves to lock the quick-release hook 5 in the tensioned state, i.e. by inserting a screwdriver into the slot 15 of the screw head 6 and exerting pressure in the direction of the longitudinal axis of the quick-release hook, i.e. in the tensioning direction of the springs, the bolt end comes to rest on the bottom of the recess 14 and by turning 90 °, the pin 12 comes into engagement with the extension 13, so that the arc chamber is held firmly on the lower part.
  • the invention thus creates an arrangement that is simple Dimensioning of the rubber bushing and by selection of the appropriate material in cooperation with the spiral compression spring 8 prevents damage to the arc chambers when excess pressures occur within the chambers, without having to make a considerable effort.

Landscapes

  • Chutes (AREA)
  • Vibration Prevention Devices (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Springs (AREA)
  • Discharge Heating (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Arc Welding In General (AREA)
  • Insulators (AREA)
EP84115388A 1984-03-15 1984-12-13 Befestigungsanordnung für Lichtbogenkammern Expired EP0157934B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115388T ATE33082T1 (de) 1984-03-15 1984-12-13 Befestigungsanordnung fuer lichtbogenkammern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3409579 1984-03-15
DE19843409579 DE3409579A1 (de) 1984-03-15 1984-03-15 Befestigungsanordnung fuer lichtbogenkammern

Publications (2)

Publication Number Publication Date
EP0157934A1 EP0157934A1 (de) 1985-10-16
EP0157934B1 true EP0157934B1 (de) 1988-03-16

Family

ID=6230628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115388A Expired EP0157934B1 (de) 1984-03-15 1984-12-13 Befestigungsanordnung für Lichtbogenkammern

Country Status (6)

Country Link
US (1) US4613734A (enrdf_load_stackoverflow)
EP (1) EP0157934B1 (enrdf_load_stackoverflow)
JP (1) JPS60211733A (enrdf_load_stackoverflow)
AT (1) ATE33082T1 (enrdf_load_stackoverflow)
DE (2) DE3409579A1 (enrdf_load_stackoverflow)
IN (1) IN163483B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225207B1 (fr) * 1985-10-31 1991-05-15 Merlin Gerin Chaîne cinématique de transmission entre le mécanisme de commande et les pôles d'un disjoncteur électrique à boîtier isolant moulé
CH682113A5 (enrdf_load_stackoverflow) * 1991-05-29 1993-07-15 Sprecher & Schuh Ag
CN220775183U (zh) * 2023-07-17 2024-04-12 阳光电源（上海）有限公司 防爆箱以及电气设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2337809A (en) * 1942-02-13 1943-12-28 Edwin G Gaynor Switch
BE496700A (enrdf_load_stackoverflow) * 1949-06-30
FR1048980A (fr) * 1950-12-08 1953-12-28 Westinghouse Electric Corp Amortisseur pour disjoncteur
DE1077296B (de) * 1958-09-11 1960-03-10 Siemens Ag Anordnung zum Befestigen von Lichtbogenkammern elektrischer Schaltgeraete
DE1256745B (de) * 1964-12-04 1967-12-21 Patelhold Patentverwertung Kontakteinrichtung in Hochfrequenzstromkreisen
YU31967B (en) * 1967-10-02 1974-02-28 Villamos Berendezes Es Keszule Elektromagnetni ukljucivac sa nosacem
US3538286A (en) * 1968-12-30 1970-11-03 Westinghouse Electric Corp Circuit interrupter support means
DE2315456B2 (de) * 1973-03-26 1978-06-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltgerät mit einer Dämpfungsanordnung
DE7522823U (de) * 1975-07-17 1977-01-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektromagnetisches Schaltgerät
DE2558333A1 (de) * 1975-12-23 1977-07-07 Porsche Ag Elastisches lager
CH599612B5 (enrdf_load_stackoverflow) * 1976-03-17 1978-05-31 Carl A Wirz

Also Published As

Publication number Publication date
DE3409579A1 (de) 1985-09-19
US4613734A (en) 1986-09-23
DE3469974D1 (en) 1988-04-21
ATE33082T1 (de) 1988-04-15
JPS60211733A (ja) 1985-10-24
JPH0360128B2 (enrdf_load_stackoverflow) 1991-09-12
EP0157934A1 (de) 1985-10-16
IN163483B (enrdf_load_stackoverflow) 1988-10-01

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