EP0035693B1 - Schaltwerk für elektrische Installationsschaltgeräte - Google Patents

Schaltwerk für elektrische Installationsschaltgeräte Download PDF

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Publication number
EP0035693B1
EP0035693B1 EP81101338A EP81101338A EP0035693B1 EP 0035693 B1 EP0035693 B1 EP 0035693B1 EP 81101338 A EP81101338 A EP 81101338A EP 81101338 A EP81101338 A EP 81101338A EP 0035693 B1 EP0035693 B1 EP 0035693B1
Authority
EP
European Patent Office
Prior art keywords
lever
switching mechanism
contact area
projection
release
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
EP81101338A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0035693A1 (de
Inventor
Rudolf Sellner
Erhard Küster
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.)
BBC Brown Boveri AG Germany
Original Assignee
BBC Brown Boveri AG Germany
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 BBC Brown Boveri AG Germany filed Critical BBC Brown Boveri AG Germany
Priority to AT81101338T priority Critical patent/ATE5788T1/de
Publication of EP0035693A1 publication Critical patent/EP0035693A1/de
Application granted granted Critical
Publication of EP0035693B1 publication Critical patent/EP0035693B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism

Definitions

  • the invention relates to a switching mechanism for an electrical installation switch, in particular for a residual current circuit breaker, with a latching point at which a contact area on a release lever is pressed resiliently against a contact area on a latch lever.
  • Such a rear derailleur is e.g. known from EP-A1 No. 0003967.
  • the trigger lever bears against the trigger pawl or vice versa, the trigger lever or the trigger pawl being pressed against the other pawl by means of a spring; If the latching point is released, the switching mechanism is triggered and the switch in question can trigger.
  • the edges of the trigger lever and the ratchet lever are straight. The consequence of this is that certain bearing tolerances lead to asymmetrical loads or surface pressures, which adversely affects the latching point.
  • the release forces in the case of frequent triggering and / or incorrect position of the locking parts relative to one another e.g. due to the misalignment of a pawl part because of unfavorable tolerances in the bearing relatively high; the linear latching or the asymmetrical latching also leads to severe abrasion in places and thus inevitably changed triggering forces.
  • the object of the invention is to design the latching point in such a way that asymmetrical supports are avoided. This object is achieved according to the invention in that the support area on the ratchet lever and / or on the release lever is convex towards the other.
  • a further embodiment of the invention can consist in that an edge of an approximately rectangular recess serves as the support region on the release lever, that a projection is provided on the latch lever for forming the support region, which protrudes into the recess in the latched state, and that the edge the recess against which the projection is pressed is convex.
  • a third embodiment can consist in that the projection is also convex toward the edge.
  • the latching is symmetrical and the spherical configuration of at least one of the support edges compensates for the bearing tolerances of both the release lever and the latch lever.
  • the triggering forces are also kept constant and, with suitable surface treatment, for example by nickel plating or by galvanizing one or the other part, greater surface protection and smaller frictional forces are achieved.
  • FIG. 1 shows a side view of a latching point for a residual current circuit breaker switch; such a rear derailleur can be found, for example, in US-A No. 3246098.
  • a ratchet jack 12 which has an extension 14, is mounted in a fixed position about an axis 10.
  • a trigger lever 18 is mounted around a further position 16, which trigger lever is also pressed in the direction of arrow F by means of a spring 20.
  • the spring 20 is a helical spring and is supported on the one hand on a projection 24 on the release lever 18 and on the other hand on the stationary stop 22. In the event of a release, the release lever 18 is moved counter to the direction of the arrow F, whereby - also under the force of a spring - the latch lever is pivoted counterclockwise P and triggers the switching mechanism.
  • the latching point itself is new, i. H. the support point or the support between the release lever 18 and the ratchet lever 12.
  • the release lever) 18 has a rectangular window 26 into which the projection 14 of the ratchet lever 12 engages.
  • This projection 14 is convexly curved toward the lower edge 28 of the window 26 of the ratchet lever 12, which serves as a support edge, so that the load or the force transmission is generated only by the curved line on the projection 14.
  • FIG. 4 it can be seen that the edge 28 of the window 26 of the latch lever 12 is convex toward the projection 14, as a result of which the same effect is achieved as in the arrangement according to FIG. 2.

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
EP81101338A 1980-03-06 1981-02-25 Schaltwerk für elektrische Installationsschaltgeräte Expired EP0035693B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101338T ATE5788T1 (de) 1980-03-06 1981-02-25 Schaltwerk fuer elektrische installationsschaltgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3008533 1980-03-06
DE19803008533 DE3008533A1 (de) 1980-03-06 1980-03-06 Schaltwerk fuer elektrische installationsschaltgeraete

Publications (2)

Publication Number Publication Date
EP0035693A1 EP0035693A1 (de) 1981-09-16
EP0035693B1 true EP0035693B1 (de) 1984-01-04

Family

ID=6096394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101338A Expired EP0035693B1 (de) 1980-03-06 1981-02-25 Schaltwerk für elektrische Installationsschaltgeräte

Country Status (4)

Country Link
EP (1) EP0035693B1 (enrdf_load_stackoverflow)
AT (1) ATE5788T1 (enrdf_load_stackoverflow)
DE (1) DE3008533A1 (enrdf_load_stackoverflow)
ES (1) ES256534Y (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909161A (en) * 1997-12-10 1999-06-01 Siemens Energy & Automation Intermediate latch for a molded case circuit breaker
US6621020B2 (en) * 2000-10-25 2003-09-16 Fuji Electric Co., Ltd. Breaking mechanism for circuit breaker
DE102016208930A1 (de) * 2016-05-24 2017-11-30 Siemens Aktiengesellschaft Überlastauslöser

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE495197C (de) * 1927-11-26 1931-04-25 Voigt & Haeffner Akt Ges UEberstromschalter mit Freiausloesung
GB1031971A (en) * 1964-03-13 1966-06-02 Square D Co Improvements in or relating to electric circuit breakers
DE1588378B2 (de) * 1967-10-17 1971-09-02 Klockner Moeller Elektnzitats GmbH, 5300 Bonn Verklinkungseinrichtung fuer elektrische selbstschalter
DE1989915U (de) * 1968-03-02 1968-07-25 Siemens Ag Elektrischer schalter mit verklinkbarem schaltmechanismus.
US3796980A (en) * 1972-07-31 1974-03-12 Westinghouse Electric Corp Disposable circuit breaker
US3808567A (en) * 1973-01-30 1974-04-30 A Maier Circuit breaker with improved resettable latch and trip means
DE2802925C2 (de) * 1978-01-24 1980-03-20 Felten & Guilleaume Carlswerk Ag, 5000 Koeln Schaltmechanismus für Leitungsschutzschalter in Flachbauweise
DE2810233C2 (de) * 1978-03-07 1979-10-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verklinkungsanordnung für elektrische Leistungsschalter
DE2851817C3 (de) * 1978-04-19 1984-10-18 Siemens AG, 1000 Berlin und 8000 München Niederspannungs-Schutzschalter mit einer Hauptklinke, einer Zwischenklinke und einem Sperrglied
DE3007244A1 (de) * 1980-02-27 1981-09-03 Brown, Boveri & Cie Ag, 6800 Mannheim Schaltwerk fuer einen installationsschalter

Also Published As

Publication number Publication date
ES256534U (es) 1981-07-01
ES256534Y (es) 1981-12-16
DE3008533A1 (de) 1981-09-17
DE3008533C2 (enrdf_load_stackoverflow) 1989-05-11
ATE5788T1 (de) 1984-01-15
EP0035693A1 (de) 1981-09-16

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