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EP0295158A1 - Steuermechanismus eines elektrischen Kleinschalters - Google Patents

Steuermechanismus eines elektrischen Kleinschalters Download PDF

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Publication number
EP0295158A1
EP0295158A1 EP88401151A EP88401151A EP0295158A1 EP 0295158 A1 EP0295158 A1 EP 0295158A1 EP 88401151 A EP88401151 A EP 88401151A EP 88401151 A EP88401151 A EP 88401151A EP 0295158 A1 EP0295158 A1 EP 0295158A1
Authority
EP
European Patent Office
Prior art keywords
lever
trigger
hook
plate
link
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
EP88401151A
Other languages
English (en)
French (fr)
Other versions
EP0295158B1 (de
Inventor
William Bartolo
Michel Lazareth
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9351866&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0295158(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0295158A1 publication Critical patent/EP0295158A1/de
Application granted granted Critical
Publication of EP0295158B1 publication Critical patent/EP0295158B1/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
    • H01H71/10—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
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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

Definitions

  • the invention relates to a control mechanism for a miniature electric circuit breaker with an insulating housing enclosing a pair of fixed and movable contacts, said movable contact being carried by a contact arm actuated by the mechanism, which comprises: - a manual operating lever coupled to a transmission link to form a toggle, a support lever for the contact arm articulated on a pivot of a rotary plate, a relative pivoting movement of small amplitude being authorized between the plate and the support lever by virtue of the presence of a contact pressure spring, - a breakable mechanical connection arranged between the plate and the transmission link, - And a trigger lever articulated on the plate being controlled by the trigger to cause in the event of a fault the rupture of said mechanical link, causing the automatic triggering of the mechanism, independently of the lever.
  • Such a device is known from document EP 244,396, in which the breakable mechanical connection consists of a notch in the plate intended to cooperate directly with the cylindrical end of the link in the armed position of the mechanism.
  • Such a mechanism is perfectly suited for circuit breakers of low ratings, but for larger ratings, the tripping force required to break the mechanical connection would be too great, and would lead to oversize the trip device, which is impossible because of the reduced overall dimensions of the housing.
  • the object of the invention is to simplify the production of a miniature circuit breaker mechanism having a reduced tripping force and a good contact pressure.
  • the mechanism according to the invention is characterized in that the breakable mechanical connection is formed by a notch retaining the trigger lever cooperating with a latching hook pivotally mounted on an axis of the plate, and that the transmission link is coupled to the hook at a point of articulation offset from the axis of said hook, and capable of moving in an opening of the plate when triggered.
  • the opening of the plate is advantageously shaped into a circular sector centered on the axis of the hanging hook.
  • the mechanical hook connection constitutes a multiplying stage in the kinematic chain for triggering the mechanism allowing a reduction in the tripping force coming from the magnetothermal trigger.
  • the bimetallic strip is connected to the trigger lever by a rotary drawer with unidirectional transmission arranged to constitute a rigid kinematic connection without friction with the trigger lever when the bimetallic strip drives the drawer in the event of thermal triggering, said link is automatically interrupted when the plate is moved to the open position of the contacts, or when the striker acts on the trigger lever in the event of a magnetic trigger.
  • the hook for hooking the mechanism cooperates after triggering with a hard snap point formed in the trigger lever so as to lock the hook in a fault signaling position.
  • the mechanism 10 for controlling a miniature electric circuit breaker with molded insulating housing 12 is of the type described in European patent application No. 224,396 of the applicant.
  • the mechanism 10 actuates a movable contact arm 14 whose free end carries a contact piece 16 cooperating with a fixed contact 18.
  • An opening 20 is formed in the front face 22 of the housing 12 for the passage of a lever 24 mounted with limited pivoting on an axis 26 between a closed position ( Figure 1) in which the contacts 16,18 are closed, and an open position ( Figure 2) corresponding to the separation of the contacts 16,18.
  • the handle 24 is equipped with an internal base coupled to a transmission link 28 to constitute a toggle device 30 whose articulation 32 is eccentric relative to the fixed axis 26 of the handle 24.
  • the lever 24 is urged in a counterclockwise direction towards the open position by a return spring (not shown).
  • the fixed contact 18 is secured to the casing of the electromagnetic trip device of which only the striker 34 is shown in the figures.
  • the contact arm 14 is fixed to a support lever 36 of insulating material, articulated on a pivot 38 of a rotary plate 40.
  • a contact pressure spring (not shown), inserted on the pivot 38, allows relative pivoting movement of small amplitude between the plate 40 and the support lever 36.
  • a trigger lever 42 controlled by the striker 34 of the electromagnetic trigger, and the bimetallic strip 44 of the thermal trigger, is pivotally mounted on an axis 46 carried by the plate 40 with a predetermined offset with respect to the pivot 38.
  • a breakable mechanical connection 48 is provided between the transmission link 28 and the plate 40 for driving the arm of contact 14.
  • the link 48 authorizes manual control of the mechanism 10 by the lever 24.
  • the displacement of the trigger lever 42 towards the triggered position under the action of the trigger causes the mechanical link 48 to break momentarily, causing the automatic triggering of the mechanism 10, independently of the lever 24.
  • the trigger lever 42 is associated with a return spring (not shown) intended to ensure the automatic restoration of the mechanical link 48 when the lever 24 is actuated towards the position opening, following a trip of mechanism 10 on fault.
  • the breakable mechanical link 48 comprises a hook 50 for hooking pivotally mounted on an axis 52 of the plate 40. Opposite the axis 52, the beak of the hook 50 cooperates in the locked position of the link 48 with a retaining notch 54 located on the upper arm of the trigger lever 42.
  • the transmission link 28 is coupled to the hook 50 at a point 56 of articulation capable of moving when tripping in a light 58 of the plate 40.
  • the light 58 is blind or open, and is shaped in a circular sector centered on the axis 52.
  • the intermediate point of articulation 56 is located between the axis 52 and the spout of the hook 50 for attachment.
  • the link 48 constitutes a multiplier stage in the kinematic chain of the mechanism 10, allowing a reduction in the tripping force coming from the magnetothermal trigger.
  • the bimetallic strip 44 of the thermal trip device cooperates with the trip lever 42 by means of a rotary slide 60 with unidirectional transmission (see FIGS. 1 and 2).
  • the drawer 60 is formed by a bent lever having one end freely coupled to the lower arm of the trigger lever 42 at a point of articulation 62.
  • the curved intermediate part of the transmission lever bears on a boss 64 of the trigger lever 42 so as to drive the latter towards the triggered position during the deflection towards the right of bimetallic strip 44 in the event of an overload current flowing in the pole.
  • the drawer 60 constitutes a rigid kinematic connection between the bimetallic strip 44 and the tripping lever 42.
  • the absence of parasitic friction between the drawer 60 and the tripping lever 42 allows a significant reduction in the effort of the trigger transmitted by the bimetallic strip 44.
  • the articulation point 62 is disposed between the boss 64 and the pivot axis 46 of the trigger lever 42.
  • the end 66 of the drawer 60 opposite the articulation point 62 is capable of abutting against a protuberance of the housing 12, with rupture of the kinematic connection with the trigger lever 42.
  • the plate 40 can pivot around the pivot 38 in the counterclockwise direction, and the intermediate zone of the drawer 60 is spaced from the boss 64 (FIG. 2). Note that if the connection remained rigid between the drawer 60 and the trigger lever 42, the complete opening of the mechanism 10 would be made impossible.
  • the articulation point 62 of the drawer 60 could of course be merged with the pivot axis 46 of the trigger lever 42.
  • the striker 34 of the electromagnetic trip acts on the lower arm of the trip lever 42 to ensure the unlocking of the hook 50 for hooking by escaping the retaining notch 54.
  • the trigger lever 42 is thus moved to the triggered position in the counterclockwise direction, without any braking reaction of the thermal trigger drawer 60 which remains inactive thanks to the presence of the flexible connection with the bimetallic strip 44.
  • FIG. 3 shows the mechanism 10 after tripping on a fault, the handle 24 being held manually in the right position, against the return force of its spring.
  • This position of the lever 24 corresponds to the closed position of FIG. 4, but the link 28 does not allow the reestablishment of the mechanical connection 48 of the hook 50 with the notch 54 of the trigger lever 42, and the mechanism 10 remains triggered .
  • the mechanical link 48 is re-established automatically as soon as the manual locking action of the lever 24 is released.
  • the lever 24 tilting can occupy a stable intermediate position (case of Figure 4) after tripping on thermal or magnetic fault.
  • the trigger lever 42 includes a hard snap point 102 capable of blocking the hook 50 after triggering and breaking of the mechanical link 48.
  • a colored marker 104 intended to signal the triggered position of the hook 50 through a signaling light 106 formed in the front face 22 of the housing 12.
  • the blocking of the hook 50 by the snap point 102 makes it possible to permanently signal the fault, firstly by the light 106 and d 'other hand by the lever 24 which occupies the intermediate stable position.
  • the fault indicator function is thus integrated into the circuit breaker.
  • the non-automatic resetting of the mechanism 100 is carried out by manual movement of the handle 24 in a counterclockwise direction from the intermediate position to the open position (see arrow R), causing the restoration of the mechanical connection 48 between the lever 24 and the plate 40, and the return of the mechanism 100 to the open device state of FIG. 2.
  • the fault signal disappears, and the device is ready to be closed by pivoting the lever 24 towards the closed position (figure 1).

Landscapes

  • Breakers (AREA)
  • Trip Switchboards (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP88401151A 1987-06-09 1988-05-11 Steuermechanismus eines elektrischen Kleinschalters Expired - Lifetime EP0295158B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8708037A FR2616583B1 (fr) 1987-06-09 1987-06-09 Mecanisme de commande d'un disjoncteur electrique miniature
FR8708037 1987-06-09

Publications (2)

Publication Number Publication Date
EP0295158A1 true EP0295158A1 (de) 1988-12-14
EP0295158B1 EP0295158B1 (de) 1992-07-22

Family

ID=9351866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401151A Expired - Lifetime EP0295158B1 (de) 1987-06-09 1988-05-11 Steuermechanismus eines elektrischen Kleinschalters

Country Status (15)

Country Link
US (1) US4916420A (de)
EP (1) EP0295158B1 (de)
JP (1) JP2735565B2 (de)
CN (1) CN1018684B (de)
AU (1) AU607227B2 (de)
CA (1) CA1327625C (de)
DE (1) DE3872955T2 (de)
ES (1) ES2034301T3 (de)
FR (1) FR2616583B1 (de)
HK (1) HK41895A (de)
IN (1) IN171389B (de)
PT (1) PT87685B (de)
TN (1) TNSN88051A1 (de)
YU (1) YU47468B (de)
ZA (1) ZA883640B (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646015A1 (fr) * 1989-04-18 1990-10-19 Gec Unelec Disjoncteur electrique
EP0408466A2 (de) * 1989-07-11 1991-01-16 Merlin Gerin Betätigungsmechanismus für elektrischen Schalter
FR2689309A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre.
FR2689308A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à palonnier pour disjoncteur électrique à phase et neutre.
EP0577586A1 (de) * 1992-06-29 1994-01-05 Felten & Guilleaume Austria Ag Selbstschalter
TR27123A (tr) * 1993-07-21 1994-11-09 Felten & Guilleaume Ag Oester Kontak köprüsüne, tespit mandali mesnedine, tepit mandalina sahip otomatik salter.
EP0661724A2 (de) * 1994-01-03 1995-07-05 Eva Munoz Omella Neuer Schaltermechanismus für elektronische Einrichtungen
EP0798756A1 (de) * 1996-03-29 1997-10-01 Schneider Electric Sa Betätigungsmechanismus für elektrischen Schutzschalter mit grossen Öffnungswinkel
FR2766292A1 (fr) * 1997-07-16 1999-01-22 Schneider Electric Sa Dispositif de commande d'un appareil de protection electrique tel un disjoncteur comprenant un moyen de signalisation du declenchement, et disjoncteur equipe d'un tel dispositif
EP1096530A2 (de) * 1999-10-25 2001-05-02 ABL SURSUM BAYERISCHE ELEKTROZUBEHÖR GmbH & Co. KG Schutzschalter mit RESET-Stellung
US6919785B2 (en) 2000-05-16 2005-07-19 General Electric Company Pressure sensitive trip mechanism for a rotary breaker
US6995640B2 (en) 2000-05-16 2006-02-07 General Electric Company Pressure sensitive trip mechanism for circuit breakers
EP1995754A1 (de) * 2007-05-23 2008-11-26 Abb Ag Elektrisches Installationsschaltgerät
CZ300092B6 (cs) * 2001-09-20 2009-01-28 Moeller Gebäudeautomation KG Spínací mechanika pro ochranný spínac
CN101923992A (zh) * 2010-08-20 2010-12-22 上海电科电器科技有限公司 一种控制与保护开关电器操作机构
EP2365510A1 (de) 2010-03-01 2011-09-14 Schneider Electric Industries SAS Leistungsschalter
CN103021746A (zh) * 2012-11-30 2013-04-03 浙江中凯科技股份有限公司 控制与保护开关电器的操作机构

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CN117219475B (zh) * 2023-10-27 2024-03-29 珠海盈源电气有限公司 一种高压开关柜用断路器

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DE7500060U (de) * 1975-01-03 1975-05-22 Boshof R Leitungsschutzschalter in Schmalbauweise und niedriger Bauart
DE2943696A1 (de) * 1979-10-30 1981-05-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus fuer leitungsschutzschalter
FR2474759A1 (fr) * 1980-01-26 1981-07-31 Licentia Gmbh Interrupteur de securite de ligne, comprenant des moyens d'affichage de son etat de declenchement du fait d'une surtension ou d'un court-circuit
EP0144691A1 (de) * 1983-10-29 1985-06-19 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co. Selbstschalter mit Anzeige der Kontaktstellung
EP0224396A1 (de) * 1985-10-31 1987-06-03 Merlin Gerin Steuermechanismus für Niederspannungslastschalter

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DE1904731A1 (de) * 1969-01-31 1970-08-13 Westermeyer Dipl Ing Joseph Elektrischer Kleinselbstschalter
DE7500060U (de) * 1975-01-03 1975-05-22 Boshof R Leitungsschutzschalter in Schmalbauweise und niedriger Bauart
DE2943696A1 (de) * 1979-10-30 1981-05-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus fuer leitungsschutzschalter
FR2474759A1 (fr) * 1980-01-26 1981-07-31 Licentia Gmbh Interrupteur de securite de ligne, comprenant des moyens d'affichage de son etat de declenchement du fait d'une surtension ou d'un court-circuit
EP0144691A1 (de) * 1983-10-29 1985-06-19 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co. Selbstschalter mit Anzeige der Kontaktstellung
EP0224396A1 (de) * 1985-10-31 1987-06-03 Merlin Gerin Steuermechanismus für Niederspannungslastschalter

Cited By (29)

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Publication number Priority date Publication date Assignee Title
FR2646015A1 (fr) * 1989-04-18 1990-10-19 Gec Unelec Disjoncteur electrique
EP0393566A1 (de) * 1989-04-18 1990-10-24 G.E.C. Unelec Elektrischer Schutzschalter
EP0408466A2 (de) * 1989-07-11 1991-01-16 Merlin Gerin Betätigungsmechanismus für elektrischen Schalter
FR2649826A1 (fr) * 1989-07-11 1991-01-18 Merlin Gerin Mecanisme de commande pour disjoncteur electrique
EP0408466A3 (en) * 1989-07-11 1991-03-27 Merlin Gerin Operating mechanism for an electric switch
FR2689309A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre.
FR2689308A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à palonnier pour disjoncteur électrique à phase et neutre.
EP0564380A1 (de) * 1992-03-31 1993-10-06 Schneider Electric Sa Antriebsmechanismus mit Schieber für elektrischen Lastschalter mit Nulleiter-Schalter
EP0564379A1 (de) * 1992-03-31 1993-10-06 Schneider Electric Sa Schwenkhebelbetätigungsmechanismus für Schutzschalter mit Phasen- und Neutralleiter
EP0577586A1 (de) * 1992-06-29 1994-01-05 Felten & Guilleaume Austria Ag Selbstschalter
TR27123A (tr) * 1993-07-21 1994-11-09 Felten & Guilleaume Ag Oester Kontak köprüsüne, tespit mandali mesnedine, tepit mandalina sahip otomatik salter.
EP0661724A2 (de) * 1994-01-03 1995-07-05 Eva Munoz Omella Neuer Schaltermechanismus für elektronische Einrichtungen
EP0661724A3 (de) * 1994-01-03 1997-09-10 Omella Eva Munoz Neuer Schaltermechanismus für elektronische Einrichtungen.
FR2746957A1 (fr) * 1996-03-29 1997-10-03 Schneider Electric Sa Mecanisme de commande d'un disjoncteur a grand angle d'ouverture
EP0798756A1 (de) * 1996-03-29 1997-10-01 Schneider Electric Sa Betätigungsmechanismus für elektrischen Schutzschalter mit grossen Öffnungswinkel
FR2766292A1 (fr) * 1997-07-16 1999-01-22 Schneider Electric Sa Dispositif de commande d'un appareil de protection electrique tel un disjoncteur comprenant un moyen de signalisation du declenchement, et disjoncteur equipe d'un tel dispositif
EP0897188A1 (de) * 1997-07-16 1999-02-17 Schneider Electric Sa Steuervorrichtung für elektrischer Schutzapparat wie ein Schutzschalter mit einer Anzeigevorrichtung zur Auslösung, und Schutzschalter ausgerüstet mit einer solchen Vorrichtung
EP1096530A2 (de) * 1999-10-25 2001-05-02 ABL SURSUM BAYERISCHE ELEKTROZUBEHÖR GmbH & Co. KG Schutzschalter mit RESET-Stellung
EP1096530A3 (de) * 1999-10-25 2003-01-15 ABL SURSUM BAYERISCHE ELEKTROZUBEHÖR GmbH & Co. KG Schutzschalter mit RESET-Stellung
US6995640B2 (en) 2000-05-16 2006-02-07 General Electric Company Pressure sensitive trip mechanism for circuit breakers
US6919785B2 (en) 2000-05-16 2005-07-19 General Electric Company Pressure sensitive trip mechanism for a rotary breaker
CZ300092B6 (cs) * 2001-09-20 2009-01-28 Moeller Gebäudeautomation KG Spínací mechanika pro ochranný spínac
EP1995754A1 (de) * 2007-05-23 2008-11-26 Abb Ag Elektrisches Installationsschaltgerät
US7839241B2 (en) 2007-05-23 2010-11-23 Abb Ag Electrical service switching device
EP2365510A1 (de) 2010-03-01 2011-09-14 Schneider Electric Industries SAS Leistungsschalter
CN101923992A (zh) * 2010-08-20 2010-12-22 上海电科电器科技有限公司 一种控制与保护开关电器操作机构
CN101923992B (zh) * 2010-08-20 2012-12-12 上海电科电器科技有限公司 一种控制与保护开关电器操作机构
CN103021746A (zh) * 2012-11-30 2013-04-03 浙江中凯科技股份有限公司 控制与保护开关电器的操作机构
CN103021746B (zh) * 2012-11-30 2014-11-05 浙江中凯科技股份有限公司 控制与保护开关电器的操作机构

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ES2034301T3 (es) 1993-04-01
ZA883640B (en) 1988-11-29
IN171389B (de) 1992-09-26
FR2616583A1 (fr) 1988-12-16
YU109388A (en) 1991-02-28
US4916420A (en) 1990-04-10
CA1327625C (en) 1994-03-08
JP2735565B2 (ja) 1998-04-02
PT87685B (pt) 1993-09-30
EP0295158B1 (de) 1992-07-22
HK41895A (en) 1995-03-31
PT87685A (pt) 1989-05-31
JPS63313445A (ja) 1988-12-21
TNSN88051A1 (fr) 1990-07-10
DE3872955T2 (de) 1993-03-11
AU607227B2 (en) 1991-02-28
CN88103427A (zh) 1988-12-28
AU1751388A (en) 1988-12-15
DE3872955D1 (de) 1992-08-27
YU47468B (sh) 1995-10-03
CN1018684B (zh) 1992-10-14
FR2616583B1 (fr) 1995-01-06

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