EP3091557B1 - Bedienungsvorrichtung eines elektrischen sicherungsgeräts und diese umfassendes elektrisches sicherungsgerät - Google Patents

Bedienungsvorrichtung eines elektrischen sicherungsgeräts und diese umfassendes elektrisches sicherungsgerät Download PDF

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Publication number
EP3091557B1
EP3091557B1 EP16164270.7A EP16164270A EP3091557B1 EP 3091557 B1 EP3091557 B1 EP 3091557B1 EP 16164270 A EP16164270 A EP 16164270A EP 3091557 B1 EP3091557 B1 EP 3091557B1
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EP
European Patent Office
Prior art keywords
plate
aforementioned
insert
control device
intended
Prior art date
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Active
Application number
EP16164270.7A
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English (en)
French (fr)
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EP3091557A1 (de
Inventor
Daniel Sinthomez
Javier Herreros
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
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Schneider Electric Industries SAS
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Publication of EP3091557A1 publication Critical patent/EP3091557A1/de
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Publication of EP3091557B1 publication Critical patent/EP3091557B1/de
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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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • 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

Definitions

  • the present invention also relates to an electrical protection apparatus comprising such a control device, and in particular a low-voltage circuit breaker.
  • the patent is known FR 2,589,627 of the aforementioned kind in which the transmission rod cooperates with the platen bearing on it.
  • the force of the mechanism is taken up two thirds on the plate and a third on the trigger bar. There is no multiplier effect.
  • the patent is also known FR 2,616,583 describing a control mechanism of a miniature electric circuit breaker having the features mentioned above.
  • the assembly comprising the transmission link, the hook, and the trip lever is a reduction stage allowing a reduction of the triggering force.
  • the force of the rod exerts a torque on the hook only. Since all the effort of the rod is concentrated on the hook, significant efforts are generated on the bar.
  • the patent is also known FR 2 914 485 in which the effort of the connecting rod is distributed on the plate and on the hook. So we get less stress on the bar. Thus, the triggering forces are reduced.
  • the force exerted by the rod is two to three times greater than that usually exercised in this type of device, which can be of the order of 100N. In this case, there is therefore an increased risk of matting the support zone of the rod on the plate, and significant friction coefficients during a trip.
  • the present invention solves these problems and proposes a device for controlling an electrical protection device, as well as an electric protection device comprising it, making it possible to reduce the triggering forces and to eliminate the non-triggering phenomena due to a matting process.
  • the support zone of the plate by the transmission rod in the so-called locking position of the control device corresponding to a closed position of the contacts of the device.
  • the subject of the present invention is a control device of the kind mentioned above, this device being characterized in that it comprises a rigid insert mounted on the plate and intended to be interposed between the transmission link and a transmission zone.
  • the plate constituting a bearing zone of this link on the plate in the aforementioned locking position, and means for maintaining the position of said insert without play with respect to said plate. Thanks to these characteristics, there is no more matting of the support zone on the plate by the connecting rod, resulting in a reduction of the friction coefficients during a trip.
  • this rigid insert comprises a substantially V-shaped folded sheet, this sheet being intended to be fixed around an axis-forming portion of the rod, this portion of an axis-forming rod being intended to be fixedly mounted in the plate. and extending substantially perpendicularly to the plane of said V.
  • the aforementioned rod portion is mounted tightly in the plate.
  • the assembly of the aforementioned insert on the rod portion is performed by laser welding.
  • said insert is mounted in a recess formed in the plate, so that the plane in which said V extends is substantially parallel to the plane of a face of the plate located opposite the transmission rod .
  • the aforementioned holding means comprise a projection provided on one face of the above-mentioned recess and intended to bear against an outer face of one of the branches of said V, said boss being intended to serve as a reference angularly to the assembly comprising the rod portion and the insert, said boss being intended to cooperate with a projecting portion belonging to another face of the above-mentioned recess, opposite to the preceding one, this protruding portion being intended for come to bear against an inner face of this same branch of the aforementioned V, opposite to the aforementioned outer face, said boss being intended to serve as an angular reference to the assembly comprising the rod portion and the insert relative to the axis of the rod, and the above-mentioned projecting part cooperating with the above-mentioned boss so as to immobilize the insert in rotation with respect to the platinum around it of the axis of the aforementioned rod portion. Thanks to these characteristics, the insert is maintained and positioned in the plate without play, which prevents the matting of the insert
  • this projecting portion comprises a tip.
  • this insert is a metal insert.
  • the rod is the needle around which the aforementioned hook is rotatably mounted relative to the plate.
  • the aforementioned transmission rod is supported both on the hook and on the plate in the locking position of the hook.
  • the force of the connecting rod is distributed on the plate and on the hook. So we get less stress on the bar. Thus, the tripping efforts are further reduced.
  • the present invention also relates to an electrical protection apparatus comprising a control device comprising the previously mentioned features taken alone or in combination.
  • this apparatus is a low-voltage circuit breaker.
  • a miniature electric circuit breaker 1 molded insulating housing comprising a control device 2 according to the invention.
  • This device comprises a support device 3 of the movable contact 4, said mobile contact 4 cooperating with a fixed contact 5.
  • An opening 7 is provided in the front face 8 of the housing for the passage of a lever 6 mounted pivotally limited on an axis 11 of the housing between a closed position in which the contacts 4,5 are closed, and a position of opening corresponding to the separation of contacts 4,5.
  • the lever 6 is equipped with an internal base 9 coupled to a transmission rod 10 to form a toggle device whose articulation 12 is eccentric with respect to the fixed axis 11 of the lever 6.
  • the lever 6 is biased in the trigonometric direction towards the position of opening of the contacts by a return spring (not shown).
  • the fixed contact 5 is secured to the casing of the electromagnetic trip unit.
  • the movable contact 4 is fixed to the support device 3 of the movable contact 4, said support 3 being articulated on a pivot 40, the rotating plate 15 being rotatably mounted around the pivot 14.
  • a triggering lever 16 controlled by the striker of the electromagnetic release, the bimetallic strip of the thermal release (not shown) or an external auxiliary, is pivotally mounted on an axis 17 carried by the plate 15 with a predetermined offset relative to the aforementioned pivot 14 .
  • the control device 2 is in a position of the open contacts, the lever 6 being in the open position. In this position, the transmission rod 10 exerts no effort on the plate.
  • the lever 6 is actuated to close the contacts, the latter moves the rod 10 which bears on the plate 15 via the insert 30, and on the hook 19.
  • the hook 19 is locked on the trigger bar (or lever) 16. ( fig.7 ).
  • the rod 10 bears on the plate 15 and on the hook 19, pivots the plate 15 about its axis 20 until the contacts 4,5 close. The rod continues its race until the dead center of the toggle formed by the lever 6 and the link 10 is crossed.
  • the mechanism takes the equilibrium position which keeps the contacts closed.
  • the position shown in FIG. figure 8 The position shown in FIG. figure 8 .
  • the rod 10 exerts a force F distributed according to a force F1 exerted on the insert 30 and a force F2 exerted on the release lever 16.
  • the handle 6 is actuated until it crosses the dead center of the toggle in the opposite direction.
  • the mechanism then joins the equilibrium position, the contacts being open, when the handle reaches the end of its stroke, the position represented on the figures 1 and 7 .
  • the hook 19 is unlocked, but the lever 6 does not return immediately to its open position.
  • the balance of forces exerted by the rod 10 on the mechanism is broken.
  • the plate 15 rotates about its axis 14 and opens the contacts, the position shown on the figure 9 .
  • the opening 25 ( fig.1 ) provided inside the hook 19, allows the rotation of the hook about the axis 20,32 and this opening 25 of the hook and the openings 26 of the plate 15, allow the rotation of the plate, the lever being still held in closed contact position.
  • the spring of the joystick brings it in open contacts position and the rod returns the hook in the initial position.
  • the biasing spring 27 of the hook and resetting of the bar places them in a position to lock the hook on the bar when the handle is actuated to close the contacts.
  • the openings 26 provided in the plate 15 participate in guiding the link 10 so as to bring it back into the support position on the plate.
  • the rod 10 bears on the contact holder plate 15 according to F1 through the insert 30, and on the locking hook 19 according to F2, the relative positions of the two bearing surfaces and the ratio of the arms Leverage is optimized so that the force that locks the hook is reduced to a minimum.
  • the system comprises two stages of reduction. According to the first, the force of the mechanism is taken up largely on the plate and in a smaller part on the hook. According to the second, by a set of lever arms on the hook, the force is multiplied on the trigger lever.
  • the invention therefore advantageously applies to such devices in which the force of the link is exerted both on the plate and on the hook, but not exclusively. Indeed, the invention also applies advantageously to devices in which the force of the link applies only to the plate for example, with the result of reducing the triggering forces.
  • the invention solves the problem of lack of tripping circuit breakers through a set comprising an axis needle and a V-shaped sheet easy to make and assemble, this set to obtain a reduction 50% of the tripping efforts of a circuit breaker with a rating of up to 120A. It should also be noted that this reduction of the tripping forces also makes it possible to obtain an improvement in the thermal adjustment, because the efforts being less important, there is less difficulty in finding the right bimetal shade.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)

Claims (12)

  1. Steuervorrichtung (2) eines elektrischen Schutzgeräts, die in einem Isoliergehäuse (1) untergebracht ist, das ein Paar von ortsfesten (5) und beweglichen Kontakten (4) umschließt, wobei der bewegliche Kontakt entweder manuell mittels eines Stellknopfs oder automatisch betätigt werden kann, die enthält
    - eine mit dem Stellknopf gekoppelte Übertragungsschubstange (10),
    - eine Trägervorrichtung (3) des beweglichen Kontakts, die eine Platte (15) aufweist, die drehbar auf einen Drehzapfen (14) montiert ist und eine unterbrechbare Verbindung mit der Übertragungsschubstange hat, und
    - einen Auslösehebel (16), der von einem Auslöser gesteuert wird, um im Fall einer Störung die Unterbrechung der mechanischen Verbindung zu bewirken, was zum automatischen Auslösen des Mechanismus unabhängig vom Stellknopf und zur Trennung der Kontakte führt,
    - wobei die unterbrechbare mechanische Verbindung von einer Halteraste (22) des Auslösehebels gebildet wird, die mit einem Befestigungshaken (19) zusammenwirkt, der schwenkbar auf eine Achse (20) der Platte (15) montiert ist, wobei der Bruch der mechanischen Verbindung der Entriegelung der Befestigung entspricht, wobei die Übertragungsschubstange (10) in der Verriegelungsstellung der Befestigung mindestens auf der Platte aufliegt,
    dadurch gekennzeichnet, dass sie einen steifen Einsatz (30), der auf die Platte (15) montiert und dazu bestimmt ist, zwischen die Übertragungsschubstange (10) und eine Zone der Platte (15) eingefügt zu werden, die eine Auflagezone dieser Schubstange auf der Platte in der erwähnten Verriegelungsstellung bildet, und Einrichtungen (34,37) zum Instellunghalten dieses Einsatzes (30) bezüglich der Platte (15) ohne Spiel aufweist.
  2. Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass dieser steife Einsatz (30) ein im Wesentlichen V-förmig gebogenes Blech aufweist, wobei dieses Blech dazu bestimmt ist, um einen eine Achse bildenden Stiftabschnitt (32) herum befestigt zu werden, wobei dieser Stiftschnitt (32) dazu bestimmt ist, ortsfest in die Platte (15) montiert zu werden, und sich im Wesentlichen lotrecht zur Ebene des V erstreckt.
  3. Steuervorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der erwähnte Stiftabschnitt (32) fest eingespannt in die Platte (15) montiert wird.
  4. Steuervorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Einbau des erwähnten Einsatzes (30) auf den Stiftabschnitt (32) durch Laserschweißen erfolgt.
  5. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Einsatz (30) in eine in der Platte (15) gebildete Aussparung (31) montiert ist, so dass die Ebene, in der sich das V erstreckt, im Wesentlichen parallel zur Ebene einer Seite (33) der Platte (15) ist, die sich gegenüber der Übertragungsschubstange (10) befindet.
  6. Steuervorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die erwähnten Halteeinrichtungen eine Wölbung (34) aufweisen, die auf einer Seite (35) der erwähnten Aussparung (31) vorgesehen und dazu bestimmt ist, gegen eine Außenseite (36) eines der Schenkel des erwähnten V in Anlage zu kommen, wobei die Wölbung (34) dazu bestimmt ist, als Winkelbezug für die den Stiftabschnitt (32) und den Einsatz (30) aufweisende Einheit zu dienen, wobei die Wölbung (34) dazu bestimmt ist, mit einem vorstehenden Teil (37) zusammenzuwirken, der zu einer anderen Seite (38) der erwähnten Aussparung (31) entgegengesetzt zur vorhergehenden gehört, wobei dieser vorstehende Teil (37) dazu bestimmt ist, gegen eine Innenseite (39) dieses gleichen erwähnten Schenkels des V entgegengesetzt zur erwähnten Außenseite (36) in Anlage zu kommen, wobei die Wölbung (34) dazu bestimmt ist, als Winkelbezug für die den Stiftabschnitt (32) und den Einsatz (30) aufweisende Einheit bezüglich der Achse des Stifts (32) zu dienen, und der erwähnte vorstehende Teil (37) mit der erwähnten Wölbung (34) zusammenwirkt, um eine Drehsperre des Einsatzes (30) bezüglich der Platte (15) um die Achse des erwähnten Stiftabschnitts (32) herzustellen.
  7. Steuervorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass dieser vorstehende Teil eine Spitze (37) aufweist.
  8. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der erwähnte Einsatz (30) ein metallischer Einsatz ist.
  9. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stift (32) die Nadel ist, um die der erwähnte Haken (19) drehbar bezüglich der Platte (15) montiert ist.
  10. Steuervorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erwähnte Übertragungsschubstange (10) in der Verriegelungsstellung des Hakens (19) sowohl auf dem Haken (19) als auch auf der Platte (15) aufliegt.
  11. Elektrisches Schutzgerät, das eine Steuervorrichtung nach einem der vorhergehenden Ansprüche aufweist.
  12. Elektrisches Schutzgerät nach Anspruch 11, dadurch gekennzeichnet, dass es ein Niederspannungs-Schutzschalter ist.
EP16164270.7A 2015-05-07 2016-04-07 Bedienungsvorrichtung eines elektrischen sicherungsgeräts und diese umfassendes elektrisches sicherungsgerät Active EP3091557B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1554089A FR3036000B1 (fr) 2015-05-07 2015-05-07 Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant

Publications (2)

Publication Number Publication Date
EP3091557A1 EP3091557A1 (de) 2016-11-09
EP3091557B1 true EP3091557B1 (de) 2017-08-02

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EP16164270.7A Active EP3091557B1 (de) 2015-05-07 2016-04-07 Bedienungsvorrichtung eines elektrischen sicherungsgeräts und diese umfassendes elektrisches sicherungsgerät

Country Status (5)

Country Link
EP (1) EP3091557B1 (de)
CN (1) CN106128880B (de)
ES (1) ES2645429T3 (de)
FR (1) FR3036000B1 (de)
RU (1) RU2703985C2 (de)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009682A1 (de) * 1979-04-26 1980-11-06 Weber Ag Fab Elektro Mehrpoliger leitungsschutzschalter
FR2589627B1 (fr) 1985-10-31 1988-08-26 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
FR2616583B1 (fr) 1987-06-09 1995-01-06 Merlin Gerin Mecanisme de commande d'un disjoncteur electrique miniature
FR2914485B1 (fr) * 2007-03-29 2009-04-24 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique la comportant
KR100882399B1 (ko) * 2007-08-20 2009-02-05 엘에스산전 주식회사 자동 풀림 링크 기구를 구비한 회로 차단기 및 이에사용되는 자동풀림 링크 기구
CN202076199U (zh) * 2011-04-15 2011-12-14 浙江科都电气制造有限公司 双极断路器
KR101258030B1 (ko) * 2011-12-02 2013-04-24 현대중공업 주식회사 가압 습동이 가능한 트립 유닛 및 이를 갖는 배선용 차단기
EP2608233A1 (de) * 2011-12-23 2013-06-26 Abb Ag Elektrischer Lasttrennschalter für Niederspannung
FR2996678B1 (fr) * 2012-10-05 2014-10-31 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant
CN202940201U (zh) * 2012-10-26 2013-05-15 东莞基业电气设备有限公司 一种小型断路器的操作机构
CN104134588B (zh) * 2014-07-17 2016-03-02 正泰集团股份有限公司 一种多极小型断路器的操作装置
CN104319203B (zh) * 2014-11-13 2017-08-25 杭州泰姆电气有限公司 断路器操作机构

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP3091557A1 (de) 2016-11-09
CN106128880A (zh) 2016-11-16
RU2016117753A3 (de) 2019-09-23
FR3036000A1 (fr) 2016-11-11
ES2645429T3 (es) 2017-12-05
CN106128880B (zh) 2019-11-15
RU2703985C2 (ru) 2019-10-23
FR3036000B1 (fr) 2017-04-21
RU2016117753A (ru) 2017-11-10

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