EP0214502A2 - Mécanisme de commutation pour un disjoncteur électrique - Google Patents

Mécanisme de commutation pour un disjoncteur électrique Download PDF

Info

Publication number
EP0214502A2
EP0214502A2 EP19860111331 EP86111331A EP0214502A2 EP 0214502 A2 EP0214502 A2 EP 0214502A2 EP 19860111331 EP19860111331 EP 19860111331 EP 86111331 A EP86111331 A EP 86111331A EP 0214502 A2 EP0214502 A2 EP 0214502A2
Authority
EP
European Patent Office
Prior art keywords
lever
spring
return spring
switch
latch
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Withdrawn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
EP19860111331
Other languages
German (de)
English (en)
Other versions
EP0214502A3 (fr
Inventor
Richard Kommert
Rudolf Sellner
Erwin Muders
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.)
Kommert Richard
MUDERS, ERWIN
Sellner Rudolf
Original Assignee
Brown Boveri und Cie AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0214502A2 publication Critical patent/EP0214502A2/fr
Publication of EP0214502A3 publication Critical patent/EP0214502A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/527—Manual reset mechanisms which may be also used for manual release actuated by lever making use of a walking beam with one extremity latchable, the other extremity actuating or supporting the movable contact and an intermediate part co-operating with the actuator

Definitions

  • the invention relates to a switching mechanism for an electrical switch, in particular for a circuit breaker according to the preamble of claim 1.
  • Such switching mechanisms have the task of keeping a mechanical energy store in the form of a spring in a tensioned state and suddenly releasing the force of the spring to open the contact point.
  • the rear derailleur has a latching point with a ratchet lever and a release lever.
  • This release lever can optionally also be part of the contact lever carrying the movable contact piece. Either an electromagnetic or a thermal release is placed on the latch lever to turn the switch off.
  • All these switch locks have a return spring that always releases the latch lever in the ready position to turn. In addition to the force of the release spring or the energy storage spring, the force of the return spring therefore acts on the latching point. This means that relatively strong bimetallic elements must be used so that the frictional force acting in the latching point between the two latched components can be surmounted safely.
  • the object of the invention is to improve a rear derailleur of the type mentioned so far that the latching force is reduced.
  • the return spring can have different configurations. It can be a torsion spring, a compression or tension spring. If a torsion spring is used, the reduction in the latching force is achieved by lifting off the end of the torsion spring which is supported on the latch lever by means of the switching knob, in accordance with the characterizing part of claim 2. If a tension or compression spring is provided, then the tension is expediently or pressure spring articulated on the shift lever, the restoring force of the return spring being at a maximum in the off position of the shift knob according to the characterizing part of claim 3.
  • the return spring is relieved or the return function of the spring on the pawl is ineffective. Relief can, of course, only take place after the latching condition has been reached. Before doing so, it would lead to the fact that the latching could possibly not be achieved.
  • the solution according to the invention reduces the load on the latching point, as a result of which lower unlatching forces and also lower return forces are achieved for the other latching part, which can either be a separate triggering part or a triggering part molded onto the contact lever. This means that cheaper, i.e. weaker, bimetals can be used and lower-energy triggers are also possible.
  • the switch lock according to the invention which can be installed in a circuit breaker, the shape of which is so well known per se that it need not be described in more detail here, is inserted into a housing, of which in FIG. 1 only those which are important for understanding the invention are shown schematically Housing parts are shown very schematically. These are the partially hatched areas designated by the reference number 10.
  • the circuit breaker also has a switch toggle 12 with an actuating handle 11 which protrudes from the housing and which, in the on or off state, comes to rest against two boundary surfaces 10a and 10b located on the housing 10.
  • an extension 13 is provided, on which one end of a bracket 16 is articulated; the other end of the bracket 16 is pivotally connected to a contact pressure spring 18 which is fastened to the contact lever 19, which carries a movable contact piece 20.
  • the movable contact piece 20 interacts with a fixed contact piece 22; both form the contact point.
  • a lever return spring 14 is formed on the actuating toggle 11, 12, 13 and is designed as a leg spring and one end of which is supported in a stationary manner on the housing 10 and the other end of which is supported on the switching toggle 12.
  • the switching mechanism comprises a ratchet lever 26 which is rotatably mounted on the housing 10 with its axis 27 and which has a hook-shaped shoulder 29 which is behind a recess (not shown in more detail) on the cone clock lever 19 supports; the recess on the contact lever 19 thus forms the release part and it interacts with the hook-shaped extension on the latch lever 26 to form the latching point 30.
  • This latch lever 26 is pivoted counterclockwise in the circuit breaker - this should be said for explanation - when an overcurrent or short-circuit current occurs from a thermal or electromagnetic release (thermobimetal or immersion or folding armature release); the latching point 30 is opened so that the contact lever is released.
  • a radial flag 31 is formed on the pawl lever 26 and a return spring 32 is wound around the pawl lever 26, one end 28 of which is supported on the housing 10, whereas the other end 33 of the return spring 32 comes to bear against the projection 31.
  • An extension part 34 is also formed on the extension 13, the length of which is dimensioned such that the free end 33 and the extension can overlap.
  • On the movable contact lever 19 continues to act on a contact return spring 24, which acts continuously on the movable contact piece in the off position.
  • the return spring 32 which is attached here as a torsion or bending spring, has the task of reducing the pawl lever 26 back into the ready-to-release position after the latching point 30 has been triggered, so that the latching point 30 is latched immediately when it is switched on.
  • the spring 32 would remain ineffective if, for example, the thermal release remains bent and holds the pawl lever 26 in the release position, which can occur if the switch would be switched on when the bimetallic metal is still warm and bent due to the immediately preceding switch-off.
  • Figure 1 now shows the switching mechanism in the switched-off state.
  • the actuating handle 11 In order to be able to switch on the switching mechanism, the actuating handle 11 must be pivoted clockwise (arrow direction P) and the movable contact piece or the contact lever 19 is brought into the switched-on position via the bracket 16.
  • the contact lever 19 is also supported on the latching point 30 or more precisely on the hook-shaped extension 29.
  • a tension spring 40 is provided to reset the ratchet lever 26 one end is attached to a projection 41 corresponding to the extension 31, whereas the other end is attached to the extension 13.
  • the switch according to FIG. 4 is again in the off position in the same position as the embodiment according to FIG. In the switched-off state, the spring 40 has its maximum length L 1 , so that the restoring force is also maximum. If the switch is to be turned on, that is to say if the switch toggle 42 is pivoted in the direction of arrow P, the articulation point 43 of the spring on the extension 13 moves into the position which is denoted by 44 in FIG.
  • the length L 2 of the spring 40 is then less than the length L 1 of the spring 40 in the switched-off state.
  • the restoring force on the ratchet lever is maximum in the off position.
  • the restoring springs 32 and 40 are relieved by changing the rest position of the pawl springs or the restoring springs during the switching-on process by means of a switching mechanism part.
  • this switching mechanism part is the actuating handle 12/42.

Landscapes

  • Breakers (AREA)
EP86111331A 1985-08-28 1986-08-16 Mécanisme de commutation pour un disjoncteur électrique Withdrawn EP0214502A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3530635 1985-08-28
DE19853530635 DE3530635A1 (de) 1985-08-28 1985-08-28 Schaltwerk fuer einen elektrischen schalter

Publications (2)

Publication Number Publication Date
EP0214502A2 true EP0214502A2 (fr) 1987-03-18
EP0214502A3 EP0214502A3 (fr) 1989-01-04

Family

ID=6279501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111331A Withdrawn EP0214502A3 (fr) 1985-08-28 1986-08-16 Mécanisme de commutation pour un disjoncteur électrique

Country Status (2)

Country Link
EP (1) EP0214502A3 (fr)
DE (1) DE3530635A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320210A1 (de) * 1992-07-10 1994-01-13 Abb Patent Gmbh Elektrisches Schaltgerät
DE4424332B4 (de) * 1994-07-11 2005-10-20 Kopp Heinrich Ag Leitungsschutzschalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908723A1 (de) * 1969-01-20 1970-09-03 Mais Adolf Rolf Schaltmechanismus fuer Selbstschalter
DE2158752B1 (de) * 1971-09-30 1973-05-10 Carl Maier + Cie, Schaflhausen (Schweiz) Leitungsschutzschalter
EP0046841A1 (fr) * 1980-08-21 1982-03-10 Licentia Patent-Verwaltungs-GmbH Mécanisme de commande pour disjoncteur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD44634A (fr) *
US2659783A (en) * 1951-07-17 1953-11-17 Gen Electric Electric circuit breaker
DE1153440B (de) * 1960-10-11 1963-08-29 Sachsenwerk Licht & Kraft Ag Antriebsvorrichtung fuer elektrische Schaltgeraete
DE3107721C2 (de) * 1981-02-28 1983-03-17 Elektrotechnische Werke Fritz Driescher & Söhne GmbH & Co, 8052 Moosburg Sprungantriebsvorrichtung für ein elektrisches Schaltgerät, inbesondere für einen Mittelspannungs-Lasttrennschalter
DE3200325C2 (de) * 1982-01-08 1986-08-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Mechanismus für einen Selbstschalter
DE3203956C2 (de) * 1982-02-05 1984-08-02 Elektrotechnische Werke Fritz Driescher & Söhne GmbH & Co, 8052 Moosburg Sprungantriebsvorrichtung für ein elektrisches Schaltgerät
DE3217255C1 (de) * 1982-05-07 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Schalterantriebsvorrichtung für Lasttrennschalter in Mittelspannungsanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908723A1 (de) * 1969-01-20 1970-09-03 Mais Adolf Rolf Schaltmechanismus fuer Selbstschalter
DE2158752B1 (de) * 1971-09-30 1973-05-10 Carl Maier + Cie, Schaflhausen (Schweiz) Leitungsschutzschalter
EP0046841A1 (fr) * 1980-08-21 1982-03-10 Licentia Patent-Verwaltungs-GmbH Mécanisme de commande pour disjoncteur

Also Published As

Publication number Publication date
EP0214502A3 (fr) 1989-01-04
DE3530635C2 (fr) 1991-01-31
DE3530635A1 (de) 1987-03-12

Similar Documents

Publication Publication Date Title
EP0543208B1 (fr) Disjoncteur de protection avec bascule
DE69711742T2 (de) Betätigungsmechanismus für einen Lastschalter mit durch einen kurzschlussentkuppelbare Verriegelung
DE69306822T2 (de) Betätigungsmechanismus für einen Selbstschalter mit Giessformgehäuse
DE69419670T2 (de) Betätigungsmechanismus für elektrischen Modulschutzschalter
CH631573A5 (de) Ueberstromschutzschalter mit ein- und ausschaltwippe.
DE2403841A1 (de) Ausloese-betaetigungsglied fuer stromkreisunterbrecher
DE1638154C3 (de) Selbstschalter
DE10037924B4 (de) Unterbrechermechanismus für Schaltautomaten
WO2006053648A1 (fr) Dispositif de commutation electrique d'une installation
DE69121467T2 (de) Mehrpoliger Überlastschalter
EP2634788A1 (fr) Disjoncteur avec serrure de verrouillage
DE2115034A1 (de) Elektrischer Schutzschalter zum Fehlerstrom-, Überstrom- und Kurzschluß-Schutz
DE69014741T2 (de) Betätigungsmechanismus für elektrischen Schalter.
DE3114717C2 (de) Unterspannungsauslöser für einen Leitungsschutzschalter
EP0091040B1 (fr) Disjoncteur de protection à courant excessif
DE3119165A1 (de) Selbstschalter als baueinheit aus einem leitungsschutzschalter sowie hilfs- und signalschaltern
EP0500138B1 (fr) Disjoncteur de protection
DE1538466B2 (de) Ein oder mehrpoliger durckknopfbetaetigter ueberstrom schalter
AT404771B (de) Schaltschloss für einen fehlerstromschutzschalter
EP0214502A2 (fr) Mécanisme de commutation pour un disjoncteur électrique
DE10133879A1 (de) Schaltgerät mit einem Schaltschloss
EP0127784B1 (fr) Disjoncteur de surintensité
EP0310943B1 (fr) Appareil de commutation électrique
DE102005046640B4 (de) Elektrisches Installationsgerät
DE19839252A1 (de) Schaltmechanismus für Schutzschalter

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): BE DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE FR GB IT

17P Request for examination filed

Effective date: 19890607

17Q First examination report despatched

Effective date: 19901212

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ASEA BROWN BOVERI AKTIENGESELLSCHAFT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SELLNER, RUDOLF

Owner name: MUDERS, ERWIN

Owner name: KOMMERT, RICHARD

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MUDERS, ERWIN

Inventor name: KOMMERT, RICHARD

Inventor name: SELLNER, RUDOLF

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: 19921203