EP0956578A2 - Commutateur a fermeture rapide - Google Patents

Commutateur a fermeture rapide

Info

Publication number
EP0956578A2
EP0956578A2 EP98909276A EP98909276A EP0956578A2 EP 0956578 A2 EP0956578 A2 EP 0956578A2 EP 98909276 A EP98909276 A EP 98909276A EP 98909276 A EP98909276 A EP 98909276A EP 0956578 A2 EP0956578 A2 EP 0956578A2
Authority
EP
European Patent Office
Prior art keywords
switching
lever
contacts
switching device
lock
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.)
Granted
Application number
EP98909276A
Other languages
German (de)
English (en)
Other versions
EP0956578B1 (fr
Inventor
Rudolf GRÄFENHAHN
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
Publication of EP0956578A2 publication Critical patent/EP0956578A2/fr
Application granted granted Critical
Publication of EP0956578B1 publication Critical patent/EP0956578B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms

Definitions

  • the invention relates to a switching device with a lever system with a switching lever for opening and closing fixed contacts with movable contacts and with a movable switch element, the movement of which is coupled with the opening and closing of the fixed contacts and movable contacts.
  • FIG. 5 Such a switching device has been available on the electronics market for some time. According to FIG. 5, it has a contact slide 21 with movable contact pieces coupled to it
  • the switching device is equipped with a lever system, the switching lever 25 of which engages at the upper end of the contact slide 21 and presses it down to open the contacts 22, 23 against the action of a contact load spring 26 acting at the lower end. The latter causes the contacts 22, 23 to close after the contact slide 21 is relieved from the switching lever 25.
  • a solution is disclosed in DE 92 06 137 Ul. DE 195 26 591 AI also disclosed an electrical switch with a spring-loaded lever system, which here acts on a contact lever with a movable contact for switching on. When switched on, the link between the lever system and the contact remains. The contact point is closed by means of a main contact force as a result of reduced action of the lever system.
  • the known switching devices are usually circuit breakers for switching and protecting motors and other connections. users. They are manufactured in different sizes, ie with different switching capacities.
  • the actuation ie the switching on or off of the circuit breakers of different sizes is possible depending on the version with manual or remote control via rocker, rocker arm or rotary toggle.
  • the force When switching on or off, the force must be transmitted from the actuating element to the movable contact via the switch lock.
  • the slow opening or closing of the moving contact must be prevented due to the increased contact erosion and the resulting shortening of the service life.
  • circuit breakers with snap characteristics have been built into circuit breakers for higher switching capacities, by means of which the contacts are quickly closed or opened.
  • Circuit breakers for smaller switching capacities incorporate structurally simple switch locks without snap characteristics. Fast switching is achieved here by unlatching the key switch when actuated.
  • the decisive factor for the rapid switching off is the excess force of the opening springs in the switch lock compared to the level of force caused by the contact load springs.
  • These circuit breakers can be switched on quickly in that a steep increase in torque must be overcome with the actuating element, for example the rocker arm, before the contacts close. It is disadvantageous that depending on the actuating element, the type of actuation and the actuation speed, the rapid activation is no longer guaranteed.
  • the invention is therefore based on the object of improving a switching device of the type mentioned above in such a way that when switching on, the contacts are quickly closed regardless of the actuating element, the type of actuation and the actuating speed on the rocker arm, on the rocker or on the rotary knob.
  • the object is achieved by a lock which first locks the switch element to close the contacts in order to create a free space for the movement stroke for the closing process between the switch lever and the switch element, which is initiated by unlocking the lock.
  • FIG. 2 shows the switch lock according to FIG. 1 with the contacts still open during the closing process
  • FIG. 3 shows the switch lock according to FIG. 1 in the unlocked switching position with the contacts closed
  • FIG. 4 shows the switching lock according to FIG. 1 in the switch position ON.
  • Figure 1 shows a switch lock 1 of an electrical switching device, such as a contactor or circuit breaker.
  • the switch lock 1 used to switch ON and OFF contacts not shown here is shown in the OFF position.
  • the switch lock 1 is composed essentially of a circuit board 2, a tooth rocker 3 as an actuating element and a lever system that is operatively connected to it, which comprises a pawl 4, a pawl lever 5, a switch lever 6 with a torsion spring 7 and a tension spring 8 as an opening spring.
  • the pawl lever 5 is unlocked, ie it is not in engagement with the pawl 4.
  • a contact slide can be used, for example.
  • Figure 4 shows the final position after completion of the switch-on, in which the return spring 12 is biased, so that when the switch lock 1 is triggered, the lock 11 is returned to the position described in Figure 1.
  • the distance a is dimensioned such that the articulation lever 10 and with it the movable contacts after unlocking the lock 11 driven by the contact load springs can be closed quickly and independently of the actuation speed and lock mechanism.

Landscapes

  • 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)
  • Keying Circuit Devices (AREA)

Abstract

L'invention concerne un commutateur à actionnement rapide des contacts, permettant de réduire l'usure des contacts et ainsi d'en prolonger la durée de vie. Selon l'invention, le mécanisme de verrouillage (1) du commutateur est pourvu d'un dispositif de blocage (11) qui, pour le processus de fermeture, est tout d'abord verrouillé en vue de créer entre un élément de commutation (10) et un levier de commutation (6) un espace libre pour la course de déplacement nécessaire au processus de fermeture qui est déclenché par le déverrouillage du dispositif de blocage (11).
EP98909276A 1997-02-03 1998-01-22 Commutateur a fermeture rapide Expired - Lifetime EP0956578B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19703977 1997-02-03
DE1997103977 DE19703977C1 (de) 1997-02-03 1997-02-03 Schaltgerät mit Schnelleinschaltung
PCT/DE1998/000199 WO1998034258A2 (fr) 1997-02-03 1998-01-22 Commutateur a fermeture rapide

Publications (2)

Publication Number Publication Date
EP0956578A2 true EP0956578A2 (fr) 1999-11-17
EP0956578B1 EP0956578B1 (fr) 2001-07-25

Family

ID=7819153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98909276A Expired - Lifetime EP0956578B1 (fr) 1997-02-03 1998-01-22 Commutateur a fermeture rapide

Country Status (4)

Country Link
EP (1) EP0956578B1 (fr)
CN (1) CN1152402C (fr)
DE (1) DE19703977C1 (fr)
WO (1) WO1998034258A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050343B (zh) 2011-10-14 2015-12-16 上海电科电器科技有限公司 快速合闸机构
AT512269A2 (de) * 2011-11-16 2013-06-15 Eaton Ind Austria Gmbh Schaltgerät
CN103337426B (zh) * 2013-05-31 2015-12-09 浙江天正电气股份有限公司 一种带快速闭合装置的小型断路器
US9734960B2 (en) 2013-09-25 2017-08-15 Siemens Aktiengesellschaft Switching device having an apparatus for switching on suddenly
EP2854152B1 (fr) * 2013-09-25 2016-11-02 Siemens Aktiengesellschaft Appareil de commutation doté d'un dispositif d'activation brusque
DE102016217197A1 (de) * 2016-09-09 2018-03-15 Siemens Aktiengesellschaft Schaltschloss für ein Niederspannungsschutzgerät
DE102016217225A1 (de) * 2016-09-09 2018-03-15 Siemens Aktiengesellschaft Schaltschloss für ein Niederspannungsschutzgerät
US11437202B2 (en) * 2020-06-29 2022-09-06 Rockwell Automation Switzerland Gmbh Switching device with lock open component

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8611082U1 (de) * 1986-04-23 1986-07-17 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Handbetätigter elektrischer Schalter
DE4013840A1 (de) * 1990-04-30 1991-10-31 Felten & Guilleaume Energie Schaltmechanismus fuer niederspannungsschaltgeraete
DE9206137U1 (de) * 1992-05-07 1993-09-09 Siemens AG, 80333 München Leistungsschalter mit einem Schaltschloß
DE19526591B4 (de) * 1995-07-21 2005-04-21 Abb Patent Gmbh Elektrischer Schalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9834258A3 *

Also Published As

Publication number Publication date
EP0956578B1 (fr) 2001-07-25
DE19703977C1 (de) 1998-05-14
WO1998034258A3 (fr) 1998-11-05
WO1998034258A2 (fr) 1998-08-06
CN1152402C (zh) 2004-06-02
CN1239584A (zh) 1999-12-22

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