EP0408466A2 - Betätigungsmechanismus für elektrischen Schalter - Google Patents

Betätigungsmechanismus für elektrischen Schalter Download PDF

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Publication number
EP0408466A2
EP0408466A2 EP90420298A EP90420298A EP0408466A2 EP 0408466 A2 EP0408466 A2 EP 0408466A2 EP 90420298 A EP90420298 A EP 90420298A EP 90420298 A EP90420298 A EP 90420298A EP 0408466 A2 EP0408466 A2 EP 0408466A2
Authority
EP
European Patent Office
Prior art keywords
lever
contacts
hook
plate
protuberance
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
EP90420298A
Other languages
English (en)
French (fr)
Other versions
EP0408466B1 (de
EP0408466A3 (en
Inventor
Yves Belin
Michel Lazareth
Vincent Ricol
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=9383774&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0408466(A2) "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 EP0408466A2 publication Critical patent/EP0408466A2/de
Publication of EP0408466A3 publication Critical patent/EP0408466A3/fr
Application granted granted Critical
Publication of EP0408466B1 publication Critical patent/EP0408466B1/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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker

Definitions

  • the invention relates to a control mechanism for a miniature electric circuit breaker with an insulating housing containing a pair of fixed and movable contacts, said movable contact being carried by a contact arm actuated for the mechanism, which comprises: - a pivoting lever coupled to a transmission link to form a first toggle joint, - a support plate for the contact arm, mounted with limited rotation on a pivot between the closed and open positions of the contacts, - a mechanical link with a breakable link formed by a second toggle joint having a hook hook pivotally mounted on an axis of the plate, and articulated to the transmission link, - And a trigger lever cooperating with the retaining spout of the hanging hook to ensure the locking and unlocking of said mechanical connection.
  • Document DE-A 3516 217 discloses a control mechanism for a miniature circuit breaker, in which a bearing surface of the contact arm blocks the end of the transmission link in the event of contact welding.
  • the handle occupies an intermediate position indicating the closed-welded state of the contacts, but forced actuation of the handle towards the open position risks causing the contacts to tear off.
  • the object of the invention consists in perfecting the production of a circuit breaker control mechanism.
  • the mechanism according to the invention is characterized in that the hooking hook is equipped with a protrusion coming into engagement against a fixed stop fixed to the housing in the closed-welded state of the contacts, to stop the lever in a position intermediate S predetermined, located between the extreme positions F closed and O open, the exceeding of neutral point of the first toggle making said intermediate position S stable for the indication of contact soldering.
  • the protuberance is arranged opposite the retaining spout relative to the transmission link.
  • the articulation point of the second toggle joint is inserted between the retaining spout and the axis of the hanging hook.
  • the housing includes a cavity arranged in the vicinity of said stop. In the open position O of the lever, the protuberance is located opposite the cavity with the interposition of a predetermined clearance.
  • the mechanism 10 for controlling a miniature electric circuit breaker with molded insulating housing 12 is of the type described in French patent application No. 2616 583.
  • the mechanism 10 actuates a movable contact arm 14 whose free end carries a contact part 16 cooperating with a fixed contact 18.
  • An orifice 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 and movable between a closed position F (fig. 1) in which the contacts 16, 18 are closed, and an open position O (fig. 2) corresponding to the separation of the contacts 16, 18.
  • the lever 24 is equipped with an internal base 27 coupled to a transmission link 28, in particular in steel, to form a first toggle joint 30 whose articulation 32 on the base 27 is eccentric relative to the axis 26 fixed to the handle 24.
  • This first toggle joint 30 is designed to give the two stable positions of the handle 24 (FIGS. 1 and 2).
  • 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 41, of the torsion type, is mounted on the pivot 38 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 relative to the pivot 38.
  • a mechanical link 48 with a breakable connecting rod comprises a second toggle provided between the lever 24 and the plate 40 for driving the contact arm 14.
  • the link 48 allows manual control of the mechanism 10 by the lever 24.
  • the movement trigger lever 42 to the triggered position under the action of the thermal or electromagnetic trigger causes the momentary rupture of the link mechanical 48, 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 re-establishment of the mechanical link 48 when the lever 24 is actuated towards the open position, following a triggering of the mechanism 10 on fault.
  • the second toggle link of the mechanical link 48 with breakable link comprises the transmission link 28 cooperating with a hook 50 for hooking pivotally mounted on an axis 52 of the plate 40. Opposite the axis 52, the spout 53 for retaining the hook 50 cooperates in the locked position of the link 48 with a notch in the upper arm 54 of the trigger lever 42.
  • the transmission link 28 is coupled to the hook 50 at a point 56 of articulation situated between the axis 52 and the retaining spout 53. This results in a multiplier stage in the kinematic chain of the mechanism 10, allowing a reduction in the tripping force coming from the magnetothermal trigger.
  • the mechanism 10 is provided with an energy storage spring 61 interposed between the plate 40 and the housing 12.
  • 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.
  • 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 is supported on a boss 64 of the trigger lever 42 of so as to drive the latter towards the position triggered during the deflection to the right of the bimetallic strip 44 in the event of an overload current flowing in the pole.
  • the slide 60 constitutes a rigid kinematic connection between the bimetallic strip 44 and the release lever 42.
  • the absence of parasitic friction between the slide 60 and the release lever 42 allows a significant reduction in the release force 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 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 trigometric direction, without any braking reaction from the thermal trigger drawer 60 which remains inactive thanks to the presence of the flexible connection with the bimetallic strip 44.
  • the hook 50 has a protuberance 70 arranged opposite the retaining spout 53 relative to the link 28 and the point of articulation 56 of the second toggle joint.
  • a cavity 72 is arranged in the internal part of the housing 12 in the vicinity of a stop 74 for limiting the stroke of the hook 50.
  • the stop 74 is constituted by a fixed part of the housing 12 capable of interfering with the protuberance 70 in the welding state of contacts 16, 18.
  • the operation of the mechanism 10 is as follows: - In the closed position F (fig. 1), the handle 24 is on the right, and the mechanical link 48 with breakable link is locked by the release lever 42.
  • the angle ⁇ of the link 48 with breakable link is minimum , especially of the order of a few degrees.
  • the spring 61 is compressed.
  • the lever 42 In the event of tripping following a fault, the lever 42 unlocks the hook 50, causing the link 48 to tilt with a breakable link under the effect of trigger of opening spring 61.
  • the angle ⁇ of the breakable connecting rod is maximum, and is determined by the arrival at the end of travel of the plate 40.
  • the protuberance 70 of the hook 50 is then located opposite the cavity 72 with interposition of a predetermined clearance 76 which allows the lever 24 to come into abutment against the left part of the orifice 20 of the housing 12 (FIG. 2), which corresponds to the open state of the circuit breaker, indicated by the appearance of the indicator light 75.
  • a predetermined clearance 76 which allows the lever 24 to come into abutment against the left part of the orifice 20 of the housing 12 (FIG. 2), which corresponds to the open state of the circuit breaker, indicated by the appearance of the indicator light 75.
  • the blocking of the protuberance 70 by the stop 74 eliminates the parasitic stroke of the hook 50 on the plate 40, and prevents the connection 40 with breakable rod from being stretched to the maximum.
  • the angle ⁇ of the breakable rod has a predetermined value comprised between the minimum and maximum values illustrated in FIGS. 1 and 2 respectively.
  • the link 48 with breakable rod works in compression during normal operation in closing and opening of the mechanism 10.
  • the link 48 works in traction in the event of an attempt to forced opening of the lever 24 in the intermediate position S.
  • the positive locking of the hook 50 by engagement of the protuberance 70 against the stop 74 secured to the housing 12 is also opposed to any effect of tearing of the contacts 16, 18 in the event of forced actuation of the handle 24 in the opening direction.

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP19900420298 1989-07-11 1990-06-25 Betätigungsmechanismus für elektrischen Schalter Expired - Lifetime EP0408466B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8909475 1989-07-11
FR8909475A FR2649826B1 (fr) 1989-07-11 1989-07-11 Mecanisme de commande pour disjoncteur electrique

Publications (3)

Publication Number Publication Date
EP0408466A2 true EP0408466A2 (de) 1991-01-16
EP0408466A3 EP0408466A3 (en) 1991-03-27
EP0408466B1 EP0408466B1 (de) 1994-12-07

Family

ID=9383774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900420298 Expired - Lifetime EP0408466B1 (de) 1989-07-11 1990-06-25 Betätigungsmechanismus für elektrischen Schalter

Country Status (4)

Country Link
EP (1) EP0408466B1 (de)
DE (1) DE69014741T2 (de)
ES (1) ES2067711T3 (de)
FR (1) FR2649826B1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021134A1 (de) * 1991-05-18 1992-11-26 Licentia Patent-Verwaltungs-Gmbh Mechanismus für einen selbstschalter
EP0737991A1 (de) * 1995-04-13 1996-10-16 Schneider Electric Sa Elektrisches Gerät, insbesondere Leistungsschalter, ausgerüstet mit einer Sicherheitsvorrichtung
EP1111644A1 (de) * 1999-12-21 2001-06-27 Hager Electro S.A. Sichereitsvorrichtung für elektrisches Gerät
FR2863403A1 (fr) * 2003-12-08 2005-06-10 Schneider Electric Ind Sas Dispositif de signalisation du declenchement d'un appareil de protection electrique et appareil de protection electrique le comportant
EP1975971A1 (de) * 2007-03-29 2008-10-01 Schneider Electric Industries S.A.S. Bedienungsvorrichtung eines elektrischen Sicherungsgeräts und elektrisches Sicherungsgerät, das sie umfasst
CN102097258A (zh) * 2009-12-11 2011-06-15 施耐德电器工业公司 具有触头熔焊指示器的开关装置
EP2518752A1 (de) * 2011-04-29 2012-10-31 Hager Electro Sas Anzeiger der Störungsauslösung durch die Position des Handsteuerhebels
CN103367054A (zh) * 2012-03-28 2013-10-23 上海良信电器股份有限公司 断路器的动作机构
CN108807098A (zh) * 2017-05-04 2018-11-13 周思雨 一种微型断路器及手柄自动合闸组件和合闸方法
CN111524756A (zh) * 2020-06-01 2020-08-11 福建通力达实业有限公司 一种合闸状态检测装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623141A (en) * 1939-04-06 1952-12-23 Heinemann Electric Co Circuit breaker
DE7508649U (de) * 1974-05-14 1975-08-28 Kopp H Hochleistungs-Selbstschalter
FR2436491A1 (fr) * 1978-09-12 1980-04-11 Merlin Gerin Disjoncteur electrique multipolaire basse tension a blocs auxiliaires de commande
IT1121759B (it) * 1979-06-01 1986-04-23 Bassani Spa Interruttore automatico unipolare
DE3033213C2 (de) * 1980-08-29 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Niederspannungs-Schutzschalter mit einem Sperrhebel
FR2614467A1 (fr) * 1987-04-21 1988-10-28 Telemecanique Electrique Appareil interrupteur de protection a mecanisme de declenchement simplifie
FR2616583B1 (fr) * 1987-06-09 1995-01-06 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique miniature

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR27254A (tr) * 1991-05-18 1994-12-21 Licentia Gmbh Bir otomatik saltere mahsus mekanizma.
WO1992021134A1 (de) * 1991-05-18 1992-11-26 Licentia Patent-Verwaltungs-Gmbh Mechanismus für einen selbstschalter
EP0737991A1 (de) * 1995-04-13 1996-10-16 Schneider Electric Sa Elektrisches Gerät, insbesondere Leistungsschalter, ausgerüstet mit einer Sicherheitsvorrichtung
FR2733087A1 (fr) * 1995-04-13 1996-10-18 Schneider Electric Sa Appareil electrique et notamment disjoncteur equipe d'un dispositif de securite
CN1056705C (zh) * 1995-04-13 2000-09-20 施耐德电器工业公司 带有安全装置的电气设备及断路器
EP1111644A1 (de) * 1999-12-21 2001-06-27 Hager Electro S.A. Sichereitsvorrichtung für elektrisches Gerät
FR2863403A1 (fr) * 2003-12-08 2005-06-10 Schneider Electric Ind Sas Dispositif de signalisation du declenchement d'un appareil de protection electrique et appareil de protection electrique le comportant
EP1542253A1 (de) * 2003-12-08 2005-06-15 Schneider Electric Industries SA Anzeigeeinrichtung einer Auslöseeinrichtung eines elektrischen Schutzgeräts
CN101276710B (zh) * 2007-03-29 2012-05-02 施耐德电器工业公司 电气保护设备的操作装置及包括该装置的电气保护设备
EP1975971A1 (de) * 2007-03-29 2008-10-01 Schneider Electric Industries S.A.S. Bedienungsvorrichtung eines elektrischen Sicherungsgeräts und elektrisches Sicherungsgerät, das sie umfasst
FR2914485A1 (fr) * 2007-03-29 2008-10-03 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique la comportant
AU2008201424B2 (en) * 2007-03-29 2011-11-10 Schneider Electric Industries Sas Operating device of an electrical protection apparatus and electrical protection apparatus comprising same
CN102097258A (zh) * 2009-12-11 2011-06-15 施耐德电器工业公司 具有触头熔焊指示器的开关装置
CN102097258B (zh) * 2009-12-11 2014-10-22 施耐德电器工业公司 具有触头熔焊指示器的开关装置
EP2518752A1 (de) * 2011-04-29 2012-10-31 Hager Electro Sas Anzeiger der Störungsauslösung durch die Position des Handsteuerhebels
FR2974664A1 (fr) * 2011-04-29 2012-11-02 Hager Electro Sas Indicateur de declenchement de defaut par la position de la manette
CN103367054A (zh) * 2012-03-28 2013-10-23 上海良信电器股份有限公司 断路器的动作机构
CN103367054B (zh) * 2012-03-28 2016-06-08 上海良信电器股份有限公司 断路器的动作机构
CN108807098A (zh) * 2017-05-04 2018-11-13 周思雨 一种微型断路器及手柄自动合闸组件和合闸方法
CN108807098B (zh) * 2017-05-04 2023-08-22 周思雨 一种微型断路器及手柄自动合闸组件和合闸方法
CN111524756A (zh) * 2020-06-01 2020-08-11 福建通力达实业有限公司 一种合闸状态检测装置

Also Published As

Publication number Publication date
EP0408466B1 (de) 1994-12-07
FR2649826B1 (fr) 1995-11-24
ES2067711T3 (es) 1995-04-01
DE69014741T2 (de) 1995-06-01
FR2649826A1 (fr) 1991-01-18
DE69014741D1 (de) 1995-01-19
EP0408466A3 (en) 1991-03-27

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