EP1274109B1 - Betätigungsmechanismus für einen Lastschalter - Google Patents

Betätigungsmechanismus für einen Lastschalter Download PDF

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Publication number
EP1274109B1
EP1274109B1 EP20020077776 EP02077776A EP1274109B1 EP 1274109 B1 EP1274109 B1 EP 1274109B1 EP 20020077776 EP20020077776 EP 20020077776 EP 02077776 A EP02077776 A EP 02077776A EP 1274109 B1 EP1274109 B1 EP 1274109B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
trip
spring
fact
holding
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 - Lifetime
Application number
EP20020077776
Other languages
English (en)
French (fr)
Other versions
EP1274109A1 (de
Inventor
Patrick Larcher
Ludovic Crotto
Daniel Sinthomez
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1274109A1 publication Critical patent/EP1274109A1/de
Application granted granted Critical
Publication of EP1274109B1 publication Critical patent/EP1274109B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H71/04—Means for indicating condition of the switching device
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators
    • 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
    • H01H71/50—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 present invention relates to an electromechanical circuit breaker comprising a housing and a control mechanism provided with a trigger mechanism able to open polar contacts in response to the implementation of a triggering element, in particular magnetothermal, following an electrical fault, and having a rotary knob cooperating with the trigger mechanism and for opening and closing the contacts on a voluntary basis.
  • the document FR 2 671 907 shows such a circuit breaker, in which a rotary knob capable of taking an "on” position and a “off” position has a ring gear cooperating with a toothed return sector which allows a one-to-one cooperation with the triggering mechanism.
  • the rotary knob be placed, in response to a fault trip, into a separate trip position from the on and off positions, and maintained in that position to give the operator a reliable indication.
  • the document FR 2 815 166 discloses a circuit breaker with a rigid lever biased by a spring to cooperate with a pin integral with the rotary knob.
  • the device specific to such a circuit breaker then has another purpose, namely to generate a rapid closure of the contacts of the circuit breaker by introducing a peak force during the closing movement.
  • the invention aims to make it compact and simplify the arrangements made in a circuit breaker mechanism of the type briefly described, to allow the control button to take an intermediate trip position between its on position and its off position.
  • the retaining device of the rotary knob in the release position comprises a torsion spring associated with the casing of the circuit breaker, being independent of the triggering mechanism and external to it.
  • the triggering mechanism is thus freed from the stop function of the button in the intermediate release position.
  • housing refers to a main part of this housing or a portion attached to the front thereof, such as a hood.
  • a rotary member provided with a stop finger is associated with the button, and the torsion spring is disposed on a fixed part of the circuit breaker housing, having a retaining branch.
  • the stop finger cooperates with the retaining branch to cross it when the button moves from the stop position to the position walk, and to be stopped by it when the trigger mechanism goes from the on state to the triggered state.
  • the torsion spring is mounted oscillating about its axis, and has a bearing branch applicable against two stops of the housing.
  • the attack of the retaining branch by the stop finger then takes place in a different angular position according to the direction of movement of the button, thanks to the movement allowed by the oscillation of the spring between the two stops. This results in greater ease of operation of the button.
  • the cover can advantageously have a front wall behind which are advantageously formed or arranged the bearing of the spring and the stops of its support branch.
  • the figure 1 schematically shows a circuit breaker according to the invention.
  • the figure 2 illustrates the circuit breaker by a schematic side view.
  • the figure 3 represents front of various elements of the circuit breaker and the control knob in the "off” position.
  • the Figures 4 to 6 show the control button in various positions, namely respectively a transient position during the motion-on movement, the "on" position and the "tripped" position.
  • the circuit breaker includes (see figure 1 ) an insulating housing 10 comprising a rear portion 10a and a front portion 10b, such as a hood, assembled at the rear portion.
  • a control button B pivoting about an axis X1.
  • Button B can occupy three positions stable, ie a stop position marked "0", a running position marked "1" and an intermediate trigger position marked "trip".
  • movable contact bridges 11 which cooperate with fixed contacts 12 for opening and closing polar paths 13 connected to upstream and downstream connection terminals 15.
  • a triggering mechanism 20 is housed in the housing 10 so as to actuate polar pushers 16 capable of controlling the displacement of the contact bridges.
  • the button B is rotatably connected to a rotary member of axis X1 such as a ring gear sector 17. Depending on the case, the rotary member 17 is different from the button or coincides with it.
  • the crown sector 17 is provided with a radially projecting finger 18 having on one side a relatively steep side and on the other side a slope 18a.
  • the sector 17 meshes with a toothed sector 21 of axis Y perpendicular to that X1 of the button, the sector 21 being connected to a system of levers 22 of the triggering mechanism 20.
  • Magnetic and / or thermal actuators 19 act on the system of levers 22 to cause in the event of an electrical fault, in particular overcurrent, the switching of the system 22 and thereby the opening of the contacts.
  • the triggering mechanism 20 comprises two mounting flanges 23 which extend in planes perpendicular to the Y axis and which define between them a relatively flat compartment 20a; the compartment 20a houses the system of levers 22 and a trigger spring 24 providing the necessary displacement energy to an actuating member 25 which cooperates with the polar pushers 16.
  • the button B is associated with a weak spring 26 - for example spiral - used to return the button to the off position.
  • a restraint with force threshold able to maintain the button B in its intermediate trigger position, is associated with the circuit breaker housing, particularly the front wall 10c of its cover 10b. This device is located according to the invention outside the compartment 20a of the trigger mechanism 20.
  • the force threshold retaining device comprises a torsion spring 30 of axis X2 parallel to the axis X1 of the button.
  • the torsion spring 30 comprises two end branches 31,32 and is mounted floating, that is to say angularly displaceable so as to rotate in a limited manner around the axis X2, on a bearing 33 protrusion inside the wall 10c.
  • the branch 31 is an oblique retaining branch capable of angularly deflecting and intended to cooperate with the radial finger 18 of the ring gear 17.
  • the branch 32 of the spring is a bearing branch which can be applied in a clockwise direction (direction of rotation). movement of the "stop” button towards “on”) against a stop 34 and counterclockwise against a stop 35.
  • the stops 34 and 35 are angularly offset and provided as elements of the front wall 10c or a rim of this wall.
  • the torque due to the spring 30 is greater than that due to the return spring 26 of the button, but less than that due to the sum of the forces produced by the release spring 24 and the spring recall 26.
  • the operator rotates counterclockwise button B to reset the mechanism, the position of the figure 6 to an unspecified position, located a little beyond the stop position of the figure 3 .
  • the operator prints the button enough effort for the finger 18 to cross the branch 31, the latter deflecting before returning to the position of the figure 3 .
  • the retaining branch 31 is urged by the finger 18 in a different angular position in the stop-and-start direction and in the trigger position, to facilitate the maneuver.
  • the finger 18 and / or the branch 31 of the spring has a slope facilitating the crossing of the end of the branch by the finger 18 when the button B is brought from the stop position to the on position. It has thus been represented on the figure 4 the slope 18a already described and provided on the leading edge of the finger 18.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (6)

  1. Schutzschalter, der mit einem Gehäuse (10) und mit einem Steuermechanismus (20) versehen ist, wobei der Mechanismus enthält:
    - ein Auslöseorgan, das auf einen elektrischen Fehler anspricht,
    - einen Auslösemechanismus (22), der geeignet ist, in Reaktion auf die Betätigung des Auslöseorgans die Kontakte zu öffnen,
    - einen Drehknopf (B), der dazu bestimmt ist, die Kontakte durch eine manuelle Einwirkung zu öffnen und zu schließen, indem er eine Stellung für Öffnen und eine Stellung für Schließen einnimmt, wobei die Betätigung des Auslösemechanismus den Drehknopf in eine Zwischen-Auslösestellung zwischen seinen Stellungen für Öffnen und Schließen versetzt,
    - eine Vorrichtung zum Halten des Drehknopfes (B) in der Auslösestellung,
    dadurch gekennzeichnet, dass die Vorrichtung zum Halten des Drehknopfes (B) in der Auslösestellung eine Drehfeder (30) umfasst, die dem Gehäuse (10) des Schutzschalters zugeordnet ist, wobei diese Haltevorrichtung von dem Auslösemechanismus (22) unabhängig ist und sich außerhalb von diesem befindet.
  2. Schutzschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Haltevorrichtung ein Drehelement (17) enthält, das dem Knopf (B) zugeordnet und mit einem Anschlagzapfen (18) versehen ist, dass die Drehfeder (30) einen schrägen Halteschenkel (31) besitzt, der an einem festen Abschnitt des Gehäuses des Schutzschalters angeordnet ist, und dass der Anschlagzapfen (18) so mit dem Halteschenkel (31) zusammenwirkt, dass er diesen überwindet, wenn der Knopf von der Aus-Stellung zu der Ein-Stellung übergeht, und dass er durch diesen Schenkel arretiert wird, wenn der Auslösemechanismus (20) von dem Ein- Zustand zu dem ausgelösten Zustand übergeht.
  3. Schutzschalter nach Anspruch 2, in dem der Auslösemechanismus eine Auslösefeder (24) enthält, dadurch gekennzeichnet, dass eine Feder (26) für Rückstellung in die Aus-Stellung dem Knopf (B) zugeordnet ist, und dass von dem den Anschlagzapfen (18) tragenden Drehelement aus gesehen das auf das elastische Organ (30) zurückzuführende Moment größer als das auf die Rückstellfeder zurückzuführende Moment, jedoch kleiner als die Summe der auf die Auslösefeder (24) und die Rückstellfeder (26) zurückzuführenden Momente ist.
  4. Schutzschalter nach Anspruch 2, dadurch gekennzeichnet, dass der Halteschenkel (31) der Drehfeder durch den Anschlagzapfen (18) in einer Winkelstellung des Schenkels vorbelastbar wird, die in die Aus-Ein-Richtung anders als zur Auslösestellung hin ist.
  5. Schutzschalter nach Anspruch 4, dadurch gekennzeichnet, dass die Drehfeder (30) in einem Lager (33) einer Abdeckplatte (10b) des Gehäuses des Schutzschalters schwingend angebracht ist und einen Abstützschenkel (32) aufweist, der in der einen und in der anderen Schwenkrichtung gegen einen jeweiligen festen Anschlag (34, 35) gedrückt werden kann, wobei das Lager der Feder und die Anschläge für ihren Abstützschenkel hinter der Wand (10c) der Abdeckplatte gebildet oder angeordnet sind.
  6. Schutzschalter nach Anspruch 4, dadurch gekennzeichnet, dass der Anschlagzapfen (18) in der Aus-Ein-Richtung eine Rampe (18a) aufweist, die den Eingriff des Halteschenkels (31) erleichtert.
EP20020077776 2001-07-06 2002-07-03 Betätigungsmechanismus für einen Lastschalter Expired - Lifetime EP1274109B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0109054 2001-07-06
FR0109054A FR2827076B1 (fr) 2001-07-06 2001-07-06 Disjoncteur et son mecanisme de commande

Publications (2)

Publication Number Publication Date
EP1274109A1 EP1274109A1 (de) 2003-01-08
EP1274109B1 true EP1274109B1 (de) 2008-03-26

Family

ID=8865253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020077776 Expired - Lifetime EP1274109B1 (de) 2001-07-06 2002-07-03 Betätigungsmechanismus für einen Lastschalter

Country Status (4)

Country Link
EP (1) EP1274109B1 (de)
DE (1) DE60225765T2 (de)
ES (1) ES2301604T3 (de)
FR (1) FR2827076B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1906428A3 (de) * 2006-09-27 2008-12-31 Siemens Aktiengesellschaft Schalterdrehantrieb
US8816802B2 (en) 2012-02-08 2014-08-26 Siemens Aktiengesellschaft Auxiliary tripping device for an electrical switching device and electrical switching device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006057649B4 (de) * 2006-12-07 2021-03-04 Abb Schweiz Ag Schaltvorrichtung
DE102006057648A1 (de) * 2006-12-07 2008-06-12 Abb Ag Schaltvorrichtung mit Drehgriff
GB2445970A (en) * 2007-01-24 2008-07-30 I C Innovations Ltd Door display
KR100876408B1 (ko) * 2007-07-12 2008-12-31 엘에스산전 주식회사 기계적 트립 표시 기구를 갖는 기중 차단기
DE102009048933A1 (de) * 2009-07-17 2011-01-27 Abb Ag Schaltvorrichtung mit Drehgriff
FR3051593B1 (fr) * 2016-05-23 2019-10-04 Schneider Electric Industries Sas Dispositif de signalisation d'un defaut electrique dans un appareil de protection electrique, et appareil de protection electrique comportant un tel dispositif.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560713B1 (fr) * 1984-03-02 1988-04-29 Merlin Gerin Mecanisme de fermeture brusque d'un disjoncteur miniature
FR2671907B1 (fr) * 1991-01-17 1995-05-12 Telemecanique Disjoncteur a commande manuelle variable.
FR2685976A1 (fr) * 1992-01-07 1993-07-09 Telemecanique Mecanisme pour appareil interrupteur de courant.
US5296664A (en) * 1992-11-16 1994-03-22 Westinghouse Electric Corp. Circuit breaker with positive off protection
DE19703959C1 (de) * 1997-02-03 1998-04-23 Siemens Ag Schaltgerät mit Tripped-Stellung des Schaltschlosses
US6031438A (en) * 1998-10-16 2000-02-29 Airpax Corporation, Llc Mid trip stop for circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1906428A3 (de) * 2006-09-27 2008-12-31 Siemens Aktiengesellschaft Schalterdrehantrieb
US8816802B2 (en) 2012-02-08 2014-08-26 Siemens Aktiengesellschaft Auxiliary tripping device for an electrical switching device and electrical switching device

Also Published As

Publication number Publication date
FR2827076A1 (fr) 2003-01-10
DE60225765T2 (de) 2009-04-09
EP1274109A1 (de) 2003-01-08
FR2827076B1 (fr) 2004-03-12
DE60225765D1 (de) 2008-05-08
ES2301604T3 (es) 2008-07-01

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