EP0196950A1 - Sperrklinke für einen Fehlerstromschutzschalter - Google Patents

Sperrklinke für einen Fehlerstromschutzschalter Download PDF

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Publication number
EP0196950A1
EP0196950A1 EP86400502A EP86400502A EP0196950A1 EP 0196950 A1 EP0196950 A1 EP 0196950A1 EP 86400502 A EP86400502 A EP 86400502A EP 86400502 A EP86400502 A EP 86400502A EP 0196950 A1 EP0196950 A1 EP 0196950A1
Authority
EP
European Patent Office
Prior art keywords
coupled
connecting rods
cam
pawl
circuit breaker
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Withdrawn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
EP86400502A
Other languages
English (en)
French (fr)
Inventor
José Maria Elizalde
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.)
ELECTROTECNICA F DE RODA SA
Original Assignee
ELECTROTECNICA F DE RODA SA
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 ELECTROTECNICA F DE RODA SA filed Critical ELECTROTECNICA F DE RODA SA
Publication of EP0196950A1 publication Critical patent/EP0196950A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a latch for a differential circuit breaker.
  • the differential circuit breakers known to date are constituted by an electromechanical device in which a bypass signal to earth acts on elements which cause a mechanical connection device to jump.
  • a relay the excitation of which causes the position of a circuit-breaker locking mechanism to change.
  • This general configuration presents, at various points of the triggering mechanism proper, efforts of a certain amplitude whose efficiency is reduced on the whole of the mechanism, which makes the excitation of the relay costly.
  • this configuration correlatively requires relays of high capacity from the point of view of thrust force or else a complex actuation mechanism with the difficulties that this entails.
  • An object of the present invention is to provide an improved lock for differential circuit breakers designed in such a way that it allows, under the effect of a very low force, to blow up the tripping mechanism in a minimum time, by obtaining excellent reliability and eliminating the drawbacks encountered with previously known solutions.
  • the trigger mechanism comprises two connecting rods hinged together and which are coupled respectively, at their free ends, on the one hand to a movable electrical contact and on the other hand to a rotary cam on which is articulated, in an eccentric manner , the free end of one of the connecting rods.
  • an external actuator of the conventional switch type which has an axis of rotation and an eccentric light in which the point of articulation of the connecting rods can move, with a certain independence of the general movement of the actuator, so as not to limit either the tripping speed or the safety of this tripping due to the existence of any obstacle which can act on the external actuator.
  • the position of the rotary cam is such that it allows the mechanism to be armed when the connecting rods are found to be aligned while maintaining a balanced position and on this rotary cam acts a small click yes constitutes the element actuated by the relay of trigger.
  • this pawl by slightly displacing this pawl with a force of very small amplitude, the rotation of the cam and the misalignment of the connecting rods are caused, which in turn causes the electrical connection to be cut.
  • the lock according to the invention offers obvious advantages which result from the small amplitude of the forces necessary to cause the triggering of the locking mechanism, advantages among which are may include the use of a simpler and smaller volume relay, the reduction in dimensions of the whole assembly, the greater operating time, the higher reliability and the greater actuation speed.
  • the lock for differential circuit breaker constitutes, as can be seen in FIG. 2, the mechanical element of such a circuit breaker which allows manual reset and also tripping in the event of any electrical anomaly.
  • This lock consists of a set of mechanical elements located between two parallel plates 1 which serve as support elements for the different points of rotation of the mechanism.
  • the lock mechanism essentially comprises two connecting rods 2 and 3 hinged together around an axis 2a.
  • One of the connecting rods 2 is attached to a spring 2b which causes the mechanism to "jump" or trigger, and the free end of this connecting rod is crossed by a stud 2c which is engaged in sliding in parallel rectilinear openings 4 pierced in the two plates 1.
  • this stud 2c By means of this stud 2c the connecting rod 2 is coupled, as can be seen in FIGS. 1 and 4, with an oscillating support 5 which carries a movable contact 6 by means of which the continuity of the circuit is established electric to protect.
  • the connecting rod 2 is also coupled with the central part of an external control member or actuator 7 of the switch button type by means of another stud 9 which provides the connection by being engaged in an arcuate light 8 which is provided in the rear and hidden part of the external control member 7.
  • This curved slot 8 allows a certain independence of movement between the two coupled elements p s.
  • the other connecting rod 3 is coupled, at its free end, with a rotary cam 10, by means of a hinge pin 11 which is housed in a small lumen 19 formed in each plate 1 in order to determine a rotational movement of the hinge pin 11.
  • a hinge pin 11 which is housed in a small lumen 19 formed in each plate 1 in order to determine a rotational movement of the hinge pin 11.
  • an arcuate lumen in which is housed a stud 12 of the cam 10, which acts as a stroke limiting element of this cam In.
  • the eccentric shape of the cam 10 ends on a foot 13 on which the tooth of a pawl or of a trigger 14 can be hooked, under the action of a spring 18 wound on the axis of rotation of the pawl 14.
  • This pawl 14 is extended, as can be seen in FIGS. 3 and 4, by a rod 15 having a T-shaped head which makes it possible to introduce it into a coupling member 16 which can rotate slightly under the action of an eccentric pallet of a relay 17.
  • the balance of the alignment between the connecting rods is broken when the relay 17 is energized, which causes a rctation, with little effort, of the pawl 17 which releases the cam ln which begins to rotate by moving the axis in turn articulation 11 by its eccentric position.
  • the connecting rods 2 and 3 are then subjected to a slight misalignment and at this time there they automatically receive a pulse from the spring 2b of the connecting rod 2, to bring them to the position shown in FIG. 2. This simultaneously causes the " jump "of the external control member 7, which cannot obstruct the disconnection movement, due to its connection via the arcuate light 8.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP86400502A 1985-03-08 1986-03-10 Sperrklinke für einen Fehlerstromschutzschalter Withdrawn EP0196950A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES1985285199U ES285199Y (es) 1985-03-08 1985-03-08 Cerrojo perfeccionado para un interruptor diferencial
ES285199U 1985-03-08

Publications (1)

Publication Number Publication Date
EP0196950A1 true EP0196950A1 (de) 1986-10-08

Family

ID=8434771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400502A Withdrawn EP0196950A1 (de) 1985-03-08 1986-03-10 Sperrklinke für einen Fehlerstromschutzschalter

Country Status (2)

Country Link
EP (1) EP0196950A1 (de)
ES (1) ES285199Y (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172477A (zh) * 2017-12-28 2018-06-15 林孟东 断路器重合闸的手柄连接机构
CN111223726A (zh) * 2020-01-09 2020-06-02 北京北元电器有限公司 一种智能断路器电动操作装置驱动及脱扣结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285053B (de) * 1960-12-24 1968-12-12 Busch Jaeger Duerener Metall Fehlerstromschutzschalter
DE1538335A1 (de) * 1966-05-06 1969-09-25 Busch Jaeger Duerener Metall Elektrischer Schutzschalter mit UEberstrom-,Kurzschluss- und Fehlerstromausloeser
FR2337933A1 (fr) * 1976-01-09 1977-08-05 Legrand Sa Relais differentiel de declenchement a haute sensibilite pour appareil de coupure tel que interrupteur ou disjoncteur par exemple
FR2430660A1 (fr) * 1978-07-03 1980-02-01 Merlin Gerin Bloc differentiel de commande de declenchement d'un disjoncteur electrique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285053B (de) * 1960-12-24 1968-12-12 Busch Jaeger Duerener Metall Fehlerstromschutzschalter
DE1538335A1 (de) * 1966-05-06 1969-09-25 Busch Jaeger Duerener Metall Elektrischer Schutzschalter mit UEberstrom-,Kurzschluss- und Fehlerstromausloeser
FR2337933A1 (fr) * 1976-01-09 1977-08-05 Legrand Sa Relais differentiel de declenchement a haute sensibilite pour appareil de coupure tel que interrupteur ou disjoncteur par exemple
FR2430660A1 (fr) * 1978-07-03 1980-02-01 Merlin Gerin Bloc differentiel de commande de declenchement d'un disjoncteur electrique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172477A (zh) * 2017-12-28 2018-06-15 林孟东 断路器重合闸的手柄连接机构
CN111223726A (zh) * 2020-01-09 2020-06-02 北京北元电器有限公司 一种智能断路器电动操作装置驱动及脱扣结构

Also Published As

Publication number Publication date
ES285199U (es) 1985-09-16
ES285199Y (es) 1986-12-16

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Inventor name: ELIZALDE, JOSE MARIA