EP0342133A1 - Betätigungsmechanismus für Kleinschalter mit Anzeige einer Kontaktschweissung - Google Patents

Betätigungsmechanismus für Kleinschalter mit Anzeige einer Kontaktschweissung Download PDF

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Publication number
EP0342133A1
EP0342133A1 EP89420159A EP89420159A EP0342133A1 EP 0342133 A1 EP0342133 A1 EP 0342133A1 EP 89420159 A EP89420159 A EP 89420159A EP 89420159 A EP89420159 A EP 89420159A EP 0342133 A1 EP0342133 A1 EP 0342133A1
Authority
EP
European Patent Office
Prior art keywords
lever
handle
contacts
stop
contact arm
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
EP89420159A
Other languages
English (en)
French (fr)
Other versions
EP0342133B1 (de
Inventor
William Bartolo
Michel Lazareth
Patrick Rousset
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=9366352&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0342133(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 EP0342133A1 publication Critical patent/EP0342133A1/de
Application granted granted Critical
Publication of EP0342133B1 publication Critical patent/EP0342133B1/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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • 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
    • H01H2071/502—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker with direct contact between manual operator and welded 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
    • H01H71/52—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

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 support plate for the contact arm associated with a breakable mechanical connection with one of the ends of a transmission link, said plate being pivotally mounted on a pivot between the closed and open positions of the contacts, - A joystick fitted with a base coupled to the other end of the transmission link to form a toggle joint whose axis of articulation is eccentric relative to the pivot axis of the joystick, the latter being movable between two extreme positions F and O corresponding respectively to the closing and opening of the contacts, - a trigger lever controlled in the event of a fault by triggering to a triggered position, causing the mechanical link to break and the mechanism to automatically trigger, independently of the lever, - And a return spring urging the lever towards the open position O.
  • Document DE-A-3,516,217 discloses a miniature circuit breaker equipped with a toggle mechanism and with cutting function.
  • the contact arm has a bearing surface which blocks the end of the transmission link when the contacts are welded.
  • the lever remains in a stable intermediate position after passing the neutral position of the knee switch, and is stopped indirectly by the blocking of the knee switch.
  • the object of the invention is to improve the disconnection and apparent signaling function of a miniature circuit breaker mechanism.
  • the mechanism according to the invention is characterized in that the contact arm is connected to a stop capable of cooperating with a blocking nose projecting from the base of the lever, said stop interfering in the closed-welded state of the contacts with the trajectory of the locking nose to positively stop the lever in a predetermined intermediate position S situated between the extreme positions F and O, and that the action of the spring of return of the lever after passing the neutral point of the toggle joint makes said intermediate position S stable for the indication of contact soldering.
  • the handle is equipped with an indicator light allowing the apparent signaling of the opening of the circuit breaker when the handle arrives in the open position O after clearing the stop.
  • the sight glass is arranged on the periphery of the base between the blocking spout and the handle so as to be visible from the outside in said position O of opening through a hole for passage of the handle, formed in the front face. of the insulating housing, said indicator being on the other hand invisible when the lever is in the intermediate position S stable after soldering of the contacts.
  • the stop for limiting the stroke of the lever of the mechanism is fixed directly to an insulating support lever secured to the contact arm.
  • the presence of the direct stop between handle and movable contact safely indicates the soldering state of the contacts when the handle is in the stable intermediate position.
  • the stop of the mechanism is located on an auxiliary lever arranged in a ratchet pivotally mounted on the pivot of the plate and of the support arm of the contact arm.
  • 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. 8708037 filed on 09.06.1987 by the applicant.
  • the mechanism 10 actuates a movable contact arm 14 whose free end carries a contact part 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 at limited pivoting on an axis 26 and movable between a closed position F ( Figure 1) in which the contacts 16, 18 are closed, and an open position O ( Figure 2) corresponding to the separation of the contacts 16, 18.
  • the joystick 24 is equipped with an internal base 27 coupled to a transmission link 28 to constitute a toggle device 30 whose articulation 32 on the base 27 is eccentric relative to the fixed axis 26 of the handle 24.
  • the lever 24 is urged in a trigometric direction towards the position O of opening by a return spring (not shown) integrated in the base 27.
  • the fixed contact 18 is secured to the carcass 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 made of insulating material, articulated on a pivot 38 of a rotary plate 40.
  • 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 link 48 is provided between the transmission link 28 and the plate 40 for driving the contact arm 14. In the locked position, the link 48 allows manual control of the mechanism 10 by the lever 24.
  • the trigger lever 42 is associated with a spring reminder (not shown) intended to ensure the automatic restoration 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 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 notch 54 retainer 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 triggered in an opening 58 of the plate 40.
  • the opening 58 is formed in a circular sector centered on the axis 52, and the articulation point 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 in source of the thermothermal release.
  • 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 the circulation of an overload current in the pole.
  • the drawer 60 constitutes a rigid kinematic connection between the bimetallic strip 44 and the trigger lever 42.
  • the absence of parasitic friction between the drawer 60 and the trigger lever 42 allows a significant reduction in the tripping 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 device acts on the lower arm of the trip lever 42 to ensure the locking 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 support lever 36 of the contact arm 14 comprises a stop 70 for limiting the stroke of the lever 24 in the event of welding of the contacts 16, 18, said stop 70 being shaped as a transverse arm situated in the interval delimited by the toggle switch 30 and the electromagnetic trigger.
  • the abutment 70 is capable of cooperating with a blocking nose 72 projecting from the base 27 opposite the lever 24 relative to the pivot axis 26.
  • An indicator light 74 for visible indication of the opening of the circuit breaker is arranged on the base 27 in the vicinity of the articulation 32 of the toggle joint 30, so as to be visible from the outside of the housing 12 through the orifice 20 when the lever 24 arrives in the open position O, shown at FIG. 2.
  • the stop 70 and the locking nose 72 come directly from molding respectively with the insulating support lever 36 and the insulating base 27 of the handle 24.
  • circuit breaker control mechanism 10 The operation of the circuit breaker control mechanism 10 according to FIGS. 1 to 3 is as follows:
  • the stop 70 follows the pivoting movement of the contact arm 14 in anti-clockwise so as to disappear in front of the locking spout 72 of the base 27.
  • the release of the base 27 authorizes the total pivoting stroke of the lever 24 to the left until position O stable opening (see Figure 2), with visible signaling of the opening by the sight glass 74 visible through the orifice 20.
  • the toggle joint 30 is then in a second stable position with the articulation 32 located above the neutral.
  • the stop 70 for limiting the stroke of the lever 24 in the event of soldering of the contacts 16, 18 is arranged in this variant on an auxiliary lever 102 pivotally mounted on the pivot 38 of the plate 40 (not shown), and of the lever support 36 of the contact arm 14.
  • a compression spring 104 is interposed between respective bosses of the levers 102, 36, so as to urge the auxiliary lever 102 in the counterclockwise direction by pressing on a lug 104 integral with the support lever 36.
  • the auxiliary lever 102 is in engagement against the lug 104, and the stop 70 cooperates with the locking spout 72 of the base 27 for block the lever 24 in the intermediate position S after passing the neutral position of the toggle joint 30.
  • the auxiliary lever 102 and spring 104 assembly constitutes a locking pawl making it possible to avoid parasitic stops, and being shaped as an amplifier lever for the blo joystick cage 24.

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  • Breakers (AREA)
EP19890420159 1988-05-13 1989-04-28 Betätigungsmechanismus für Kleinschalter mit Anzeige einer Kontaktschweissung Expired - Lifetime EP0342133B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8806562 1988-05-13
FR8806562A FR2631485B1 (fr) 1988-05-13 1988-05-13 Mecanisme de commande de disjoncteur miniature a indicateur de soudure des contacts

Publications (2)

Publication Number Publication Date
EP0342133A1 true EP0342133A1 (de) 1989-11-15
EP0342133B1 EP0342133B1 (de) 1993-08-11

Family

ID=9366352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890420159 Expired - Lifetime EP0342133B1 (de) 1988-05-13 1989-04-28 Betätigungsmechanismus für Kleinschalter mit Anzeige einer Kontaktschweissung

Country Status (4)

Country Link
EP (1) EP0342133B1 (de)
DE (1) DE68908263T2 (de)
ES (1) ES2044192T3 (de)
FR (1) FR2631485B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660794A1 (fr) * 1990-04-09 1991-10-11 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique.
DE19735415A1 (de) * 1997-08-14 1999-02-18 Siemens Ag Schaltmechanismus für einen Schutzschalter
EP2131378A1 (de) 2008-06-03 2009-12-09 Schneider Electric Industries SAS Steuervorrichtung für ein elektrisches Unterbrechungsgerät, das mit einer Signalisierungsvorrichtung für die Verschweißung der Kontakte ausgestattet ist, und mit dieser Vorrichtung ausgestattetes elektrisches Unterbrechungsgerät
CN102187419A (zh) * 2008-10-15 2011-09-14 Abb股份公司 具有接触状态指示器的低压断路器

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IT1292453B1 (it) 1997-07-02 1999-02-08 Aeg Niederspannungstech Gmbh Gruppo rotante di contatti per interrutttori di alta portata
DE19819242B4 (de) 1998-04-29 2005-11-10 Ge Power Controls Polska Sp.Z.O.O. Thermomagnetischer Leistungsschalter
US6114641A (en) 1998-05-29 2000-09-05 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
US6087913A (en) 1998-11-20 2000-07-11 General Electric Company Circuit breaker mechanism for a rotary contact system
US6037555A (en) 1999-01-05 2000-03-14 General Electric Company Rotary contact circuit breaker venting arrangement including current transformer
US6166344A (en) 1999-03-23 2000-12-26 General Electric Company Circuit breaker handle block
US6262872B1 (en) 1999-06-03 2001-07-17 General Electric Company Electronic trip unit with user-adjustable sensitivity to current spikes
US6268991B1 (en) 1999-06-25 2001-07-31 General Electric Company Method and arrangement for customizing electronic circuit interrupters
US6218917B1 (en) 1999-07-02 2001-04-17 General Electric Company Method and arrangement for calibration of circuit breaker thermal trip unit
US6188036B1 (en) 1999-08-03 2001-02-13 General Electric Company Bottom vented circuit breaker capable of top down assembly onto equipment
US6710988B1 (en) 1999-08-17 2004-03-23 General Electric Company Small-sized industrial rated electric motor starter switch unit
US6252365B1 (en) 1999-08-17 2001-06-26 General Electric Company Breaker/starter with auto-configurable trip unit
US6396369B1 (en) 1999-08-27 2002-05-28 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
US6175288B1 (en) 1999-08-27 2001-01-16 General Electric Company Supplemental trip unit for rotary circuit interrupters
US6232570B1 (en) 1999-09-16 2001-05-15 General Electric Company Arcing contact arrangement
US6326869B1 (en) 1999-09-23 2001-12-04 General Electric Company Clapper armature system for a circuit breaker
US6239395B1 (en) 1999-10-14 2001-05-29 General Electric Company Auxiliary position switch assembly for a circuit breaker
US6229413B1 (en) 1999-10-19 2001-05-08 General Electric Company Support of stationary conductors for a circuit breaker
US6317018B1 (en) 1999-10-26 2001-11-13 General Electric Company Circuit breaker mechanism
US6232856B1 (en) 1999-11-02 2001-05-15 General Electric Company Magnetic shunt assembly
ES2249875T3 (es) 1999-11-03 2006-04-01 AEG NIEDERSPANNUNGSTECHNIK GMBH & CO. KG Disposicion de brazo de contacto rotatorio para disyuntor.
US6377144B1 (en) 1999-11-03 2002-04-23 General Electric Company Molded case circuit breaker base and mid-cover assembly
US6300586B1 (en) 1999-12-09 2001-10-09 General Electric Company Arc runner retaining feature
US6310307B1 (en) 1999-12-17 2001-10-30 General Electric Company Circuit breaker rotary contact arm arrangement
US6172584B1 (en) 1999-12-20 2001-01-09 General Electric Company Circuit breaker accessory reset system
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US6215379B1 (en) 1999-12-23 2001-04-10 General Electric Company Shunt for indirectly heated bimetallic strip
US6281461B1 (en) 1999-12-27 2001-08-28 General Electric Company Circuit breaker rotor assembly having arc prevention structure
US6346869B1 (en) 1999-12-28 2002-02-12 General Electric Company Rating plug for circuit breakers
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US6496347B1 (en) 2000-03-08 2002-12-17 General Electric Company System and method for optimization of a circuit breaker mechanism
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US6380829B1 (en) 2000-11-21 2002-04-30 General Electric Company Motor operator interlock and method for circuit breakers
US6448522B1 (en) 2001-01-30 2002-09-10 General Electric Company Compact high speed motor operator for a circuit breaker
US6476337B2 (en) 2001-02-26 2002-11-05 General Electric Company Auxiliary switch actuation arrangement
US6678135B2 (en) 2001-09-12 2004-01-13 General Electric Company Module plug for an electronic trip unit
US6469882B1 (en) 2001-10-31 2002-10-22 General Electric Company Current transformer initial condition correction
US6804101B2 (en) 2001-11-06 2004-10-12 General Electric Company Digital rating plug for electronic trip unit in circuit breakers
DE102006047074A1 (de) * 2006-09-27 2008-04-03 Siemens Ag Schalterdrehantrieb
FR2923943B1 (fr) * 2007-11-16 2010-01-01 Schneider Electric Ind Sas Dispositif de commande d'un appareil electrique de coupure, et appareil electrique de coupure le comportant

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DE1055664B (de) * 1957-11-19 1959-04-23 Voigt & Haeffner Ag Schaltmechanismus fuer elektrische Schalter, insbesondere Installationsselbstschalter
US2956135A (en) * 1957-01-18 1960-10-11 Clark Controller Co Hand operated switch
EP0144691A1 (de) * 1983-10-29 1985-06-19 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co. Selbstschalter mit Anzeige der Kontaktstellung
DE3516217A1 (de) * 1984-05-15 1985-11-21 Mitsubishi Denki K.K., Tokio/Tokyo Schaltungsunterbrecher
FR2605454A1 (fr) * 1986-10-20 1988-04-22 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique miniature a rearmement automatique

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US2956135A (en) * 1957-01-18 1960-10-11 Clark Controller Co Hand operated switch
DE1055664B (de) * 1957-11-19 1959-04-23 Voigt & Haeffner Ag Schaltmechanismus fuer elektrische Schalter, insbesondere Installationsselbstschalter
EP0144691A1 (de) * 1983-10-29 1985-06-19 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co. Selbstschalter mit Anzeige der Kontaktstellung
DE3516217A1 (de) * 1984-05-15 1985-11-21 Mitsubishi Denki K.K., Tokio/Tokyo Schaltungsunterbrecher
FR2605454A1 (fr) * 1986-10-20 1988-04-22 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique miniature a rearmement automatique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660794A1 (fr) * 1990-04-09 1991-10-11 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique.
EP0452230A1 (de) * 1990-04-09 1991-10-16 Merlin Gerin Antriebsmechanismus für Schutzschalter
DE19735415A1 (de) * 1997-08-14 1999-02-18 Siemens Ag Schaltmechanismus für einen Schutzschalter
EP2131378A1 (de) 2008-06-03 2009-12-09 Schneider Electric Industries SAS Steuervorrichtung für ein elektrisches Unterbrechungsgerät, das mit einer Signalisierungsvorrichtung für die Verschweißung der Kontakte ausgestattet ist, und mit dieser Vorrichtung ausgestattetes elektrisches Unterbrechungsgerät
CN101599394A (zh) * 2008-06-03 2009-12-09 施耐德电器工业公司 电气开关单元的控制设备和包括该设备的电气开关单元
RU2502149C2 (ru) * 2008-06-03 2013-12-20 Шнейдер Электрик Эндюстри Сас Устройство управления электрическим коммутационным устройством, содержащее устройство для индикации сваривания контактов, и электрическое коммутационное устройство, содержащее одно такое устройство
CN101599394B (zh) * 2008-06-03 2015-05-20 施耐德电器工业公司 电气开关单元的控制设备和包括该设备的电气开关单元
CN102187419A (zh) * 2008-10-15 2011-09-14 Abb股份公司 具有接触状态指示器的低压断路器

Also Published As

Publication number Publication date
EP0342133B1 (de) 1993-08-11
DE68908263D1 (de) 1993-09-16
FR2631485B1 (fr) 1995-06-02
FR2631485A1 (fr) 1989-11-17
ES2044192T3 (es) 1994-01-01
DE68908263T2 (de) 1994-03-10

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