EP2518753B1 - Unterbrechungsvorrichtung für elektrischen Strom mit vereinfachter Struktur - Google Patents

Unterbrechungsvorrichtung für elektrischen Strom mit vereinfachter Struktur Download PDF

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Publication number
EP2518753B1
EP2518753B1 EP12157334.9A EP12157334A EP2518753B1 EP 2518753 B1 EP2518753 B1 EP 2518753B1 EP 12157334 A EP12157334 A EP 12157334A EP 2518753 B1 EP2518753 B1 EP 2518753B1
Authority
EP
European Patent Office
Prior art keywords
trolley
ratchet
casing
spring
electric current
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.)
Active
Application number
EP12157334.9A
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English (en)
French (fr)
Other versions
EP2518753A1 (de
Inventor
Benjamin Leclercq
Jean-Luc Evrard
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France 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
Application filed by Legrand SNC, Legrand France SA filed Critical Legrand SNC
Priority to PL12157334T priority Critical patent/PL2518753T3/pl
Publication of EP2518753A1 publication Critical patent/EP2518753A1/de
Application granted granted Critical
Publication of EP2518753B1 publication Critical patent/EP2518753B1/de
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Anticipated expiration legal-status Critical

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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
    • H01H71/528—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/40—Driving mechanisms having snap action
    • H01H21/42—Driving mechanisms having snap action produced by compression or extension of coil spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates generally to the field of electrical equipment.
  • a device of this type is for example described in the US patent US 7,115,829 .
  • the realization of the retaining means is subject to two antinomic constraints which represent on the one hand the need to provide this device with a reliable and reproducible operation, and on the other hand the desire to obtain this quality. operating with a structure as simple as possible.
  • the purpose of the present invention is to propose an electric current cut-off device, such as a disconnect switch, whose retaining means respond very satisfactorily to this need.
  • the breaking device of the invention is essentially characterized in that the retaining member connected to the housing is constituted by a shoulder of the housing, in that the retaining means further comprises a pawl pivotally mounted on the carriage about a pivot axis, in that this ratchet comprises at least a first cam extending obliquely with respect to the axial direction and a bearing surface cooperating with said shoulder to hold the carriage in its retaining position, in that the second end of the link cooperates with the first cam to cause, as the actuating means move from their engagement position to their exhaust position, a corresponding pivoting of the pawl in a first direction about its pivot axis, and in that said ratchet bearing surface escapes the shoulder of the housing crossing, by the actuating means, their exhaust position.
  • the first spring may be constituted by a helical spring.
  • the second end of the rod extends transversely to the axial direction and bears directly on the second end of the first spring.
  • the shoulder may be integral with the bottom wall which is traditionally provided with the housing.
  • the carriage may have a rear face which is disposed facing the bottom wall of the housing, and on which the pawl is pivotally mounted.
  • the rear face of the carriage has a slot parallel to the axial direction, the second end of the link passes through this slot, and that this slot is designed, at least by its dimensions, to be able to guide the second end of the link in the axial direction.
  • the carriage may also have an anterior face disposed parallel to and at a distance from its posterior face, and this anterior face may also be traversed by the second end of the link.
  • the first cam of the pawl is disposed between the pivot axis and the bearing surface of this pawl, that this pawle comprises a second cam extending substantially parallel. to the first cam and disposed between said first cam and the pivoting axis of the pawl, and that the second end of the link cooperates with the second cam to cause, as the carriage passes from its final latching position to its inactive position , a corresponding pivoting of the pawl in a second direction about its pivot axis, replacing the pawl bearing surface latent position of engagement with the shoulder of the housing.
  • the pawl has for example a light delimited by a closed edge and disposed between the pivot axis and the bearing surface of the pawl, each cam of the pawl can then be defined by a portion of the edge of said light.
  • this electric current cut-off device can also include a second spring prestressed in compression between the housing and the carriage, this second spring constantly urging the carriage to its inactive position.
  • the invention relates to an electric current cut-off device, such as a disconnect switch.
  • Such a device comprises, in known manner, a housing 1, one or more fixed contacts 21 integral with the housing 1, a movable contact 22, a carriage 3, a spring 41, actuating means 5, and retaining means 6 .
  • the carriage 3 is slidably mounted in the housing 1, in an axial direction Z shown vertically on the Figures 2 to 14 , between an inactive position visible to Figures 5 and 6 and a final latching position visible to Figures 13 and 14 , passing through a restraint position visible to Figures 7 to 10 .
  • such a device generally also comprises a second spring 42 prestressed in compression between the housing 1 and the carriage 3, this second spring 42 being for example constituted by a helical spring and continuously urging the carriage 3 to its inactive position.
  • the movable contact 22 is slidably mounted in the carriage 3 in the axial direction Z.
  • the spring 41 which is also preferably constituted by a helical spring, is housed in the carriage 3 and prestressed in compression.
  • the end 411 of the spring 41 that is to say the lower end of this spring in the figures, thus exerts, on the movable contact 22 and in the axial direction Z, an elastic force directed towards the fixed contact 21 , that is, down on the Figures 2 to 14 .
  • This elastic force is therefore antagonistic to that exerted by the spring 42, but of higher value.
  • the actuating means 5, which comprise an eccentric 51 and a rod 52, have the function of making it possible to increase the compression of the spring 41 in order to be able to move the carriage 3 from its inactive position to its final engagement position with the against the antagonistic restoring force exerted on the carriage 3 by the second spring 42.
  • the eccentric 51 which is rotatably mounted in the housing 1 around its hub 510, has a handle 511 for operating from outside the housing 1.
  • the rod 52 has an end 521 kinematically connected to the eccentric 51 and an end 522 acting on the end 412 of the spring 41, that is to say on the upper end of this spring 41 in the arrangement illustrated in Figures 2 to 14 .
  • the eccentric 51 and the rod 52 can thus be simultaneously moved from a visible rest position to Figures 5 and 6 , towards a final latching position visible to Figures 13 and 14 , including through a visible engagement position to the Figures 7 and 8 , and by an escape position visible to Figures 11 and 12 .
  • the actuating means 5 exert, on the end 412 of the spring 41, via the end 522 of the rod 52, and in the axial direction Z, a force which is directed towards the fixed contact 21, that is to say down on the Figures 2 to 14 , and which has the effect of increasing the compression of the spring 41 from the engagement position of these actuating means, illustrated in FIGS. Figures 7 and 8 .
  • the retaining means 6, which comprise a retaining member 61 connected to the casing 1, are designed to keep the carriage 3 in its retaining position ( Figures 7 to 10 ) for any position of the actuating means 5 between their engagement position ( Figures 7 and 8 ) and their exhaust position ( Figures 11 and 12 ), and to release the carriage 3 at the crossing, by the actuating means 5, from their exhaust position ( Figures 11 and 12 ).
  • the contribution of the invention mainly concerns the simplification of the retaining means 6.
  • the retaining member connected to the housing 1 is constituted by a shoulder 61 of the housing, and these retaining means 6 further comprise a pawl 62 pivotally mounted on the carriage 3 about a pivot axis X, preferably transverse to the axial direction Z.
  • the ratchet 62 has ( figure 3 ) a cam 621 which extends obliquely with respect to the axial direction Z, and a bearing surface 623 which cooperates with the shoulder 61 to maintain the carriage 3 in its retaining position.
  • the end 522 of the rod 52 cooperates with the cam 621 to cause, during the passage of the actuating means 5 from their engagement position to their exhaust position, a corresponding pivoting of the pawl 62 in the direction of a clearance D about its pivot axis X ( figure 10 ).
  • This pivoting is dimensioned so that, when the actuating means 5 pass through their exhaust position ( figure 12 ), the bearing surface 623 of the pawl 62 escapes the shoulder 61 of the housing 1, thus allowing the spring 41 to suddenly move the carriage 3 to its final latching position.
  • the cam 621 may be shaped so that the end 522 of the rod 52 causes the pawl 62 to pivot only from the intermediate position illustrated in FIG. figure 10 , that is to say only in the vicinity of the end of the passage of the actuating means 5 from their engagement position to their exhaust position.
  • the ends 521 and 522 of the rod 52 extend both transversely to the axial direction Z, and transversely to the median portion of the link connecting these ends.
  • the shoulder 61 may be integral with the bottom wall 10 of which the housing 1 is provided.
  • the pawl 62 is for example pivotally mounted on the rear face 31 of the carriage 3, that is to say on the face of the carriage 3 which is arranged facing the bottom wall 10 of the housing 1.
  • the end 522 of the rod 52 also crosses the front face 32 of the carriage 3, that is to say the face of this carriage which is arranged parallel and at a distance from the rear face 31 .
  • the rear face 31 of the carriage 3 has a slot 310 parallel to the axial direction Z, and that this slot 310 is traversed by the end 522 of the rod 52 to be able to guide this end 522.
  • the cam 621 of the pawl 62 is advantageously arranged between the pivot axis X and the bearing surface 623 of this pawl 62.
  • the pawl 62 may also comprise another cam 622, which extends at least approximately parallel to the cam 621 and which is disposed between this cam 621 and the pivot axis X of the pawl 62.
  • the end 522 of the rod 52 can then cooperate with this second cam 622 to cause, when the carriage 3 passes from its final inoperative position to its inactive position, a corresponding pivoting of the pawl 62 in the direction of an armament A around its pivot axis X ( figure 3 ), this pivoting to replace the bearing surface 623 of the pawl 62 in latent position of engagement with the shoulder 61 of the housing 1 without requiring the use of an additional spring.
  • the pawl 62 may have a light 620 delimited by a closed edge and disposed between the pivot axis X and the bearing surface 623 of this pawl 62, so that each of the cams 621 and 622 of this pawl can be defined by a corresponding portion of the edge of this light 620.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanical Operated Clutches (AREA)
  • Shearing Machines (AREA)
  • Transmission Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Slide Switches (AREA)

Claims (10)

  1. Vorrichtung zur Unterbrechung von elektrischem Strom, wie beispielsweise ein Trennschalter, umfassend:
    - ein Gehäuse (1);
    - mindestens einen festen Kontakt (21), der mit dem Gehäuse (1) verbunden ist;
    - einen Schlitten (3), der gleitend in dem Gehäuse (1) entlang einer Axialrichtung (Z) zwischen einer inaktiven Position und einer Endauslöseposition, über eine Halteposition verlaufend, montiert ist,
    - einen beweglichen Kontakt (22), der gleitend in dem Schlitten (3) entlang der Axialrichtung (Z) auf einem Anschlag (30) des Schlittens (3) in der inaktiven Position und der Halteposition des Schlittens montiert ist und an jeden festen Kontakt (22) in der Endauslöseposition des Schlittens (3) angelegt ist;
    - eine erste Feder (41), die in dem Schlitten (3) angeordnet, in Kompression vorgespannt ist und ein erstes Ende (411) aufweist, das auf den beweglichen Kontakt (22) in Axialrichtung (Z) eine elastische Kraft ausübt, die zum festen Kontakt (21) gerichtet ist;
    - Betätigungsmittel (5), umfassend einen Exzenter (51) und einen Schwingarm (52), dessen erstes Ende (521) mit dem Exzenter (51) verbunden ist, wobei diese Betätigungsmittel (5) außerhalb des Gehäuses (1) von einer Ruheposition in eine Endauslöseposition über eine Eingriffsposition und eine Freigabeposition steuerbar und derart ausgeführt sind, dass sie selektiv entlang der Axialrichtung (Z) auf ein zweites Ende (412) der ersten Feder (41) und über ein zweites Ende (522) des Schwingarms (52) eine Kraft ausüben, die zum festen Kontakt (21) in eine Richtung, die die Kompression der ersten Feder (41) verstärken kann, gerichtet ist;
    - und Haltemittel (6), umfassend ein Halteelement (61), das mit dem Gehäuse (1) verbunden ist, und derart ausgeführt, dass sie den Schlitten (3) in seiner Halteposition in jeder Position der Betätigungsmittel (5) zwischen ihrer Eingriffsposition und ihrer Freigabeposition halten, und dass sie den Schlitten (3) beim Überschreiten ihrer Freigabeposition durch die Betätigungsmittel (5) freigeben, wobei der Schlitten (3) nun plötzlich in seine Endauslöseposition durch teilweise Entspannung der ersten Feder (41) verschoben wird,
    dadurch gekennzeichnet, dass das Halteelement, das mit dem Gehäuse (1) verbunden ist, von einem Absatz (61) des Gehäuses gebildet ist, dass die Haltemittel (6) ferner eine Raste (62) umfassen, die schwenkbar auf dem Schlitten (3) um eine Schwenkachse (X) montiert ist, dass diese Raste (62) mindestens eine erste Nocke (621), die sich schräg zur Axialrichtung (Z) erstreckt, und eine Stützfläche (623) umfasst, die mit dem Absatz (61) zusammenwirkt, um den Schlitten (3) in seiner Halteposition zu halten, dass das zweite Ende (522) des Schwingarms (52) mit der ersten Nocke (621) zusammenwirkt, um beim Übergang von ihrer Eingriffsposition in ihre Freigabeposition durch die Betätigungsmittel (5) ein entsprechendes Schwenken der Raste (62) in eine erste Richtung (D) um ihre Schwenkachse (X) hervorzurufen, und dass die Stützfläche (623) der Raste (62) aus dem Absatz (61) des Gehäuses (1) beim Überschreiten ihrer Freigabeposition durch die Betätigungsmittel (5) austritt.
  2. Vorrichtung zur Unterbrechung von elektrischem Strom nach Anspruch 1, dadurch gekennzeichnet, dass die erste Feder (41) eine Spiralfeder ist.
  3. Vorrichtung zur Unterbrechung von elektrischem Strom nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich das zweite Ende (522) des Schwingarms (52) quer zur Axialrichtung (Z) erstreckt und direkt auf dem zweiten Ende (412) der ersten Feder (41) aufliegt.
  4. Vorrichtung zur Unterbrechung von elektrischem Strom nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (1) eine Bodenwand (10) aufweist, und dass der Absatz (61) mit der Bodenwand (10) aus einem Stück ist.
  5. Vorrichtung zur Unterbrechung von elektrischem Strom nach Anspruch 4, dadurch gekennzeichnet, dass der Schlitten (3) eine Rückseite (31) aufweist, die gegenüber der Bodenwand (10) des Gehäuses (1) angeordnet ist, und dass die Raste (62) schwenkbar auf der Rückseite (31) des Schlittens (3) montiert ist.
  6. Vorrichtung zur Unterbrechung von elektrischem Strom nach den Ansprüchen 3 und 5, dadurch gekennzeichnet, dass die Rückseite (31) des Schlittens (3) einen Schlitz (310) parallel zur Axialrichtung (Z) aufweist, dass das zweite Ende (522) des Schwingarms (52) durch diesen Schlitz (310) hindurchgeht, und dass dieser Schlitz (310) derart ausgeführt ist, dass er das zweite Ende (522) des Schwingarms (52) in Axialrichtung (Z) führt.
  7. Vorrichtung zur Unterbrechung von elektrischem Strom nach Anspruch 6, dadurch gekennzeichnet, dass der Schlitten (3) eine Vorderseite (32) aufweist, die parallel und in einem Abstand zu seiner Rückseite (31) angeordnet ist, und dass durch diese Vorderseite (32) ebenfalls das zweite Ende (522) des Schwingarms (52) hindurchgeht.
  8. Vorrichtung zur Unterbrechung von elektrischem Strom nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Nocke (621) der Raste (62) zwischen der Schwenkachse (X) und der Stützfläche (623) dieser Raste (62) angeordnet ist, dass diese Raste (62) eine zweite Nocke (622) umfasst, die sich im Wesentlichen parallel zur ersten Nocke (621) erstreckt und zwischen der ersten Nocke (621) und der Schwenkachse (X) der Raste (62) angeordnet ist, und dass das zweite Ende (522) des Schwingarms (52) mit der zweiten Nocke (622) zusammenwirkt, um, wenn der Schlitten (3) von seiner Endauslöseposition in seine inaktive Position übergeht, ein entsprechendes Schwenken der Raste (62) in eine zweite Richtung (A) um ihre Schwenkachse (X) hervorzurufen, wobei die Stützfläche (623) der Raste (62) wieder in latente Eingriffsposition mit dem Absatz (61) des Gehäuses (1) gebracht wird.
  9. Vorrichtung zur Unterbrechung von elektrischem Strom nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Raste (62) eine Öffnung (620) aufweist, die von einem geschlossenen Rand begrenzt und zwischen der Schwenkachse (X) und der Stützfläche (623) dieser Raste (62) angeordnet ist, und dass jede Nocke (621, 622) der Raste (62) durch einen Abschnitt des Randes der Öffnung (620) definiert ist.
  10. Vorrichtung zur Unterbrechung von elektrischem Strom nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine zweite in Kompression zwischen dem Gehäuse (1) und dem Schlitten (3) vorgespannte Feder (42) umfasst, wobei diese zweite Feder (42) den Schlitten (3) permanent in seine inaktive Position belastet.
EP12157334.9A 2011-04-27 2012-02-28 Unterbrechungsvorrichtung für elektrischen Strom mit vereinfachter Struktur Active EP2518753B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12157334T PL2518753T3 (pl) 2011-04-27 2012-02-28 Urządzenie odłączające prąd elektryczny o uproszczonej strukturze

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1153599A FR2974663B1 (fr) 2011-04-27 2011-04-27 Dispositif de coupure de courant electrique a structure simplifiee

Publications (2)

Publication Number Publication Date
EP2518753A1 EP2518753A1 (de) 2012-10-31
EP2518753B1 true EP2518753B1 (de) 2013-04-17

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EP (1) EP2518753B1 (de)
CN (1) CN102760606B (de)
FR (1) FR2974663B1 (de)
IN (1) IN2012DE00677A (de)
PL (1) PL2518753T3 (de)
RU (1) RU2584877C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319202A (zh) * 2014-11-04 2015-01-28 大连理工常熟研究院有限公司 一种用于漏电保护器的控制装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2854152B1 (de) * 2013-09-25 2016-11-02 Siemens Aktiengesellschaft Schaltgerät mit einer Einrichtung zum sprunghaften Einschalten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3639166A1 (de) * 1986-11-15 1988-05-26 Geyer Gmbh & Co Christian Antriebsmechanismus fuer elektrische schalter
DE19922852C1 (de) * 1999-05-19 2001-04-19 Eti Elektroelement Dd Schalter
JP3859053B2 (ja) * 2000-07-07 2006-12-20 富士電機機器制御株式会社 回路遮断器
ITMI20021060A1 (it) * 2002-05-17 2003-11-17 Gewiss Spa Dispositivo sezionatore modulare con chiusura del contatto mobile indipendente
FR2859815B1 (fr) * 2003-09-11 2005-12-02 Legrand Sa Dispositif de coupure de courant electrique a contact mobile en translation
WO2005029524A1 (de) * 2003-09-23 2005-03-31 Moeller Gebäudeautomation KG Schalter
AT505092B1 (de) * 2003-09-23 2013-02-15 Moeller Gebaeudeautomation Kg Schalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319202A (zh) * 2014-11-04 2015-01-28 大连理工常熟研究院有限公司 一种用于漏电保护器的控制装置

Also Published As

Publication number Publication date
EP2518753A1 (de) 2012-10-31
FR2974663A1 (fr) 2012-11-02
RU2584877C2 (ru) 2016-05-20
RU2012117092A (ru) 2013-11-10
PL2518753T3 (pl) 2013-08-30
CN102760606B (zh) 2015-11-25
IN2012DE00677A (de) 2015-08-21
CN102760606A (zh) 2012-10-31
FR2974663B1 (fr) 2013-05-24

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