EP0956579A1 - Commutateur a declencheur auxiliaire a minimum de tension - Google Patents

Commutateur a declencheur auxiliaire a minimum de tension

Info

Publication number
EP0956579A1
EP0956579A1 EP98906834A EP98906834A EP0956579A1 EP 0956579 A1 EP0956579 A1 EP 0956579A1 EP 98906834 A EP98906834 A EP 98906834A EP 98906834 A EP98906834 A EP 98906834A EP 0956579 A1 EP0956579 A1 EP 0956579A1
Authority
EP
European Patent Office
Prior art keywords
lever
switch
actuating element
switching device
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.)
Granted
Application number
EP98906834A
Other languages
German (de)
English (en)
Other versions
EP0956579B1 (fr
Inventor
Rainer Kreutzer
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 EP0956579A1 publication Critical patent/EP0956579A1/fr
Application granted granted Critical
Publication of EP0956579B1 publication Critical patent/EP0956579B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • 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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel

Definitions

  • the invention relates to a switching device with a
  • Switch lock for opening and closing main contacts, with a leading undervoltage auxiliary switch and with an actuating element which serves to drive the switch lock and for closing the undervoltage auxiliary release, which prematurely moves a latch lever belonging to the switch lock into its closed position before the switch-on process via the key switch.
  • the undervoltage auxiliary switch is coupled here to the actual switching device in order to extend the motor or system protection to a power failure or too low voltage when using a circuit breaker.
  • the undervoltage auxiliary switch is basically an electromagnet that works against an opening spring. The latter is pretensioned when voltage is present and enables the switching device to be latched via a claw.
  • the switch-off spring opens the latch lock with the spring energy stored in it by means of the claw and the switching device opens the circuit. The current is switched on to bias the opening spring via the electromagnet, ie the leading undervoltage auxiliary switch.
  • the actuating element of the switching device In the first part of its movement stroke, the actuating element of the switching device only acts on the closing mechanism of the undervoltage auxiliary switch. Only when this contact is closed and can be locked in place, do the driver lugs engage in the key switch mechanism and switch it to the ON state.
  • the invention has for its object to provide a switching device of the type mentioned above, in which the course of the undervoltage auxiliary release with subsequent latching of the switching lock is realized in a simple manner.
  • the switching mechanism has a lever mechanism which is operatively connected to the actuating element and which comprises an intermediate lever for latching on the latch lever, and a first and a second spring force acting on the intermediate lever, the sum of the two spring forces acting on the intermediate lever in a first phase of actuation of the actuating element, in which the leading undervoltage auxiliary switch is closed, holds it at a stop, and in a subsequent second actuation phase moves the intermediate lever away from the stop into the latching position on the latch lever.
  • the switching lock has a control lever that is operatively connected to the actuating element, a tension spring acting on it, an angle lever that can be changed in its position by force transmission of the tension spring, and an intermediate lever arranged between the angle lever and the latch lever, which is in exhibition is held by a compensation spring on a stop in such a position that it moves into its closed position when the ratchet lever is moved
  • a gag advantageously serves as the actuating element for driving.
  • a further advantageous embodiment is when the undervoltage auxiliary switch closes after a first angle of rotation ⁇ of the actuating element and, at a second larger angle of rotation ⁇ , the intermediate lever bears against the now closed latch lever in the latching position. In this way, the necessary advance is guaranteed.
  • the compensation spring is designed as a torsion spring, the space requirement can be reduced and the required spring stiffness achieved.
  • a further advantageous embodiment of the invention exists if the actuating element is provided with a link contour which, when actuated, rotates a deflection lever which triggers the closing of the undervoltage auxiliary switch.
  • This represents a particularly simple and inexpensive active compound fertilizer between the actuator and the auxiliary contact of the undervoltage auxiliary switch.
  • FIG. 1 shows a perspective view of a switch lock with rotary drive of a switching device according to the invention in the OFF position
  • FIG. 2 shows a perspective view of the switch lock according to FIG. 1 with the triggering mechanism of the undervoltage auxiliary switch
  • FIG. 3 shows a representation of the functional principle of the
  • the switching lock essentially consists of a control lever 2, an angle lever 3, an intermediate lever 4, a ratchet lever 5 with a latching lug 6, a tension spring 7 and two tabs 8, 9.
  • the toggle 1 is directly connected to a control segment 2 via a toothed segment 10 and a drive lever 11 which is toothed therewith, ie without an idle travel.
  • the tension spring 7 hangs at one end on the rotatably mounted control lever 2 and at the other end together with the brackets 8 and 9 at a hinge point 12.
  • the bracket 8 is also rotatably attached to the angle lever 3, which is supported on the intermediate lever 4.
  • the latter is pulled by the force of a compensation spring 13, which is designed here as a torsion spring, to a stop, not shown here.
  • the spring force of the compensation spring 13 is dimensioned such that the intermediate lever 4 is held on the stop 14 despite the torque 15 or 16 introduced (see FIG. 3).
  • 2 shows the release mechanism of the undervoltage auxiliary switch in connection with the switch lock.
  • the toothed segment 10 connected to the gag 1 has a link contour 17 on its underside. When the toggle 1 is actuated, it rotates a bellcrank 18 by which the contact 19 of the leading undervoltage auxiliary switch is closed.
  • the undervoltage auxiliary switch includes a switch-off spring 20 and a sliding element 21 acting thereon, which acts on a switching claw 22 of the switching device.
  • the switching claw 22 is connected to a trigger shaft 23 as shown in FIG 1 to release the latch lock.
  • FIG. 3 shows the principle of operation of the switch mechanism in conjunction with the undervoltage auxiliary switch in the OFF position.
  • the tension spring 7 and the tab 8 connected to it at the articulation point 12 exert a small torque 15 on the angle lever 3 due to the relatively short lever arm 25.
  • the torque 26 then acting on the intermediate lever 4 is so small that it bears against the stop 14 by the action of the spring force of the compensation spring 13.
  • the contact 19 of the undervoltage auxiliary switch is in the open position, in which the switch-off spring 20 holds the latch lever 5 in its open position without the action of the electromagnet of the undervoltage auxiliary switch.
  • control lever 2 When switching on, the control lever 2 is moved in the ON direction by turning the toggle 1 (see FIG. 4) and the main contacts of the switching device (not shown here) are closed. At the same time, the link contour 17 on the toothed segment 10 actuates the leading undervoltage auxiliary switch.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

L'invention concerne un commutateur à interrupteur auxiliaire à minimum de tension, associant une faible force d'actionnement à une structure simple. Un accouplement inamovible entre l'élément d'actionnement (1) et le mécanisme de verrouillage du commutateur permet de transmettre au mécanisme de verrouillage l'intégralité de la course cinématique de l'élément d'actionnement (1). Ce dernier comporte une came (17) par l'intermédiaire de laquelle est déclenché l'interrupteur auxiliaire à minimum de tension.
EP98906834A 1997-02-03 1998-01-22 Commutateur a declencheur auxiliaire a minimum de tension Expired - Lifetime EP0956579B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1997103973 DE19703973C1 (de) 1997-02-03 1997-02-03 Schaltgerät mit Unterspannungs-Hilfsauslöser
DE19703973 1997-02-03
PCT/DE1998/000201 WO1998034260A1 (fr) 1997-02-03 1998-01-22 Commutateur a declencheur auxiliaire a minimum de tension

Publications (2)

Publication Number Publication Date
EP0956579A1 true EP0956579A1 (fr) 1999-11-17
EP0956579B1 EP0956579B1 (fr) 2002-04-10

Family

ID=7819151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98906834A Expired - Lifetime EP0956579B1 (fr) 1997-02-03 1998-01-22 Commutateur a declencheur auxiliaire a minimum de tension

Country Status (5)

Country Link
EP (1) EP0956579B1 (fr)
JP (1) JP3935508B2 (fr)
CN (1) CN1163934C (fr)
DE (1) DE19703973C1 (fr)
WO (1) WO1998034260A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19754072C1 (de) * 1997-12-05 1999-07-22 Siemens Ag Schaltgeräteeinheit aus einem Schaltgerät und angekoppeltem voreilendem Hilfsschalter
IT1316658B1 (it) * 2000-02-23 2003-04-24 Ge Power Controls Italia Spa Attivatore rotante per interruttori in grado di attivare in anticipoun loro sganciatore di minima tensione
KR100516943B1 (ko) * 2003-12-26 2005-09-23 엘에스산전 주식회사 모터 보호용 차단기의 트립 오류 방지를 위한 개폐기구부의 구조 및 그 동작 방법
DE102009021754B4 (de) 2009-05-13 2023-11-16 Siemens Aktiengesellschaft Hilfsauslöseeinheit für einen Leistungsschalter
CN101894695B (zh) * 2009-05-22 2012-10-17 苏州万龙电气集团股份有限公司 锥齿轮式双摇杆浮杆开关装置
DE102012201854A1 (de) 2012-02-08 2013-08-08 Siemens Aktiengesellschaft Hilfsauslöser für ein elektrisches Schaltgerät sowie elektrisches Schaltgerät
CN107665796B (zh) * 2016-07-28 2019-12-06 浙江正泰电器股份有限公司 断路器与其辅助触头的联动机构
DE102016217396A1 (de) * 2016-09-13 2018-03-15 Siemens Aktiengesellschaft Schaltgerät mit einer Einrichtung für eine zuverlässige Schaltstellungsanzeige bei verschweißten Kontakten
DE102017122008B4 (de) * 2017-09-22 2020-11-05 Lisa Dräxlmaier GmbH Elektrischer schalter
CN113624265B (zh) * 2021-07-30 2024-04-26 广东控银实业有限公司 一种非接触式摇杆传感器、控制装置及处理系统和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743876A (en) * 1987-07-24 1988-05-10 Westinghouse Electric Corp. Circuit interrupter with undervoltage trip mechanism
DE9206137U1 (de) * 1992-05-07 1993-09-09 Siemens Ag Leistungsschalter mit einem Schaltschloß
DE9206139U1 (fr) * 1992-05-07 1992-07-02 Siemens Ag, 8000 Muenchen, De
DE4310863C1 (de) * 1993-04-02 1994-05-26 Kloeckner Moeller Gmbh Hilfsschaltgerät für ein mit einem Schaltschloß ausgerüstetes elektrisches Schaltgerät
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 WO9834260A1 *

Also Published As

Publication number Publication date
CN1241291A (zh) 2000-01-12
DE19703973C1 (de) 1998-05-20
JP3935508B2 (ja) 2007-06-27
CN1163934C (zh) 2004-08-25
EP0956579B1 (fr) 2002-04-10
WO1998034260A1 (fr) 1998-08-06
JP2001509943A (ja) 2001-07-24

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