EP0710969B1 - Dispositif verrouillable entraîné manuellement pour appareils de commutation blindés - Google Patents

Dispositif verrouillable entraîné manuellement pour appareils de commutation blindés Download PDF

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Publication number
EP0710969B1
EP0710969B1 EP95116711A EP95116711A EP0710969B1 EP 0710969 B1 EP0710969 B1 EP 0710969B1 EP 95116711 A EP95116711 A EP 95116711A EP 95116711 A EP95116711 A EP 95116711A EP 0710969 B1 EP0710969 B1 EP 0710969B1
Authority
EP
European Patent Office
Prior art keywords
switching
lever
handle
manual operation
operation device
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.)
Expired - Lifetime
Application number
EP95116711A
Other languages
German (de)
English (en)
Other versions
EP0710969A1 (fr
Inventor
Volker Heins
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.)
Eaton Industries GmbH
Original Assignee
Kloeckner Moeller GmbH
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
Priority claimed from DE19944439373 external-priority patent/DE4439373C1/de
Application filed by Kloeckner Moeller GmbH filed Critical Kloeckner Moeller GmbH
Publication of EP0710969A1 publication Critical patent/EP0710969A1/fr
Application granted granted Critical
Publication of EP0710969B1 publication Critical patent/EP0710969B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms
    • H01H9/28Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20Interlocking, locking, or latching mechanisms
    • H01H9/28Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H2009/288Provisions relating to welded contacts

Definitions

  • the invention relates to a lockable manual actuation device with a handle for switching on and off encapsulated electrical switching devices, in particular switching devices with disconnecting function, according to the preamble of claim 1.
  • a lockable rotary drive for circuit breakers is known from EP 0 450 699 A2, in which the return torque on the axis of rotation that occurs when the switch contacts of the circuit breaker are welded between a rotatable handle for switching the circuit breaker on and off and a driver system that transmits this rotary movement to the rocker arm of the circuit breaker is queried.
  • This known device is very complicated.
  • the handle can be pivoted with a certain amount of play in the direction of rotation on the square of the axis of rotation of the driving system.
  • a locking disk with a radial locking web protruding into a lower recess on the handle, on which the handle is resiliently supported in the direction of rotation by a helical compression spring.
  • a locking lug protrudes radially outward from the locking disk, which, when the switching contacts are properly opened, i.e. there is no reverse torque on the axis of rotation of the rotary drive, the passage for a locking lever that is displaceably or pivotably mounted on the handle for entry into a fixed locking opening on the housing of the rotary drive releases.
  • the lockable locking lever if it is arranged, for example, pivotably on the handle of the rotary drive, can be pivoted so far, even with welded contacts, before reaching the OFF position that it has its angled locking end as long as the handle has not yet rotated relative to the locking disk is swiveled to the side next to the locking lug into an intermediate position in which it then prevents further pivoting of the locking lug into the actual locking position until its locking end has come to the OFF position for the locking opening fixed to the housing and the locking lever by turning the handle violently can thus be forced into the lockable locking position despite the welded contacts.
  • the invention has for its object to provide a lockable manual control device for electrical switchgear, in particular switchgear with an isolating function, with a simple mechanical construction with a small number of required components so that it can only be locked against switching on the switchgear when the switch contacts are open properly, a query for a return torque caused by the switch lock of the switching device on the drive shaft is not absolutely necessary as a result of switching contacts which are not opened correctly.
  • the invention has the advantage that with this lockable manual control device with very few simple mechanical components it is ensured that the locking cannot take place in any of the usual switch positions if the contacts of the switching device are welded and are therefore not properly opened. Another advantage is that there is no play between the two handle halves during normal switching on and off, and accordingly there is no relative movement. Locking in the OFF position is impossible even if the drive shaft is broken, since no torque can act in the OFF direction.
  • the operator must press the switch-off lever when turning the handle to the OFF switch position, the return torque acting on the drive shaft of the switchgear always striving is to turn back the handle with the drive shaft in the direction of the ON switch position and, in the absence of torque in the OFF switch direction, to keep the two handle halves closed.
  • the two-part handle loaded by the operator in the switching direction OFF can therefore not be opened, so that even when the switching position OFF is reached, the locking element can be moved out of the handle to the outside between, for example, the housing of the switching device or on a base plate of the manual control device to move existing locking elements.
  • the handle halves as a switch lever or a switch lever, which can be pivoted and extended compared to the former when the contacts are properly opened to release the locking element, and by the integral nature of the switch lever and the locking element, an embodiment is proposed which manages with a small number of components and is easy to handle with respect to the locking element.
  • the proposed cover on the switch-off lever with two arms of the switch-on and switch-off lever are simple and expedient means for both locking and releasing the locking element.
  • Locking the return of the switch-off lever in the assembled state of both handle halves by means of hooked-in padlocks and preventing the handle from turning further in the ON switching direction by means of the lock stop for the pivoted and extended switch-off lever create a simple and effective locking option for the switching device in the state of properly opened switch contacts.
  • a tension spring for keeping the handle halves closed is expedient, in particular in a space-saving manner which is provided in the opposite direction to the locking element.
  • the internal stop surfaces serve to limit the extension stroke of the switch-off lever.
  • FIGS. 1 and 3 to 5 show a lockable manual actuation device 1 with a handle 2 for switching on and off encapsulated electrical switching devices 3, in particular circuit breakers, in which the restoring force in the ON direction of the switch lock is used to lock when the switch contacts are welded or fixed to prevent the handle 2 seated on the drive shaft 4 of the switching device 3.
  • the handle 2 for actuating the switching device 3 is divided into two handle halves 2a, 2b in a plane containing the longitudinal axis of the drive shaft 4 of the switching device 2. It consists of a first handle part serving as switch lever 10 and a second handle part serving as switch lever 11.
  • Both handle parts or handle halves 2a, 2b are held together by a spring force acting in the direction of rotation and enclose between them a lockable locking element 6 which, in the OFF switching position of the switching device 3 of FIGS. 1 and 3, with the handle halves 2a, 2b open, between stationary locking elements 7, 8 such as locking cams on the housing of the switching device 3 or engages in a blocking manner on a base plate of the manual actuation device 1.
  • the switch lever 10 is fixedly connected to the drive shaft 4 of the switching device 3 on a square or the like and has a locking element 6 which can be fixed in the OFF switching position on the housing of the switching device 3 or on the base plate of the manual control device 1.
  • the switch-off lever 11 is mounted such that it can be pivoted away from the side of the handle 2 in the ON-switching direction against the spring action in relation to the switch-on lever 10 about the drive shaft 4 or a parallel axis such that it locks the locking element 6 each time the handle 2 is actuated in the OFF-switching direction locks and only releases for locking when the handle 2 has reached the OFF switching position of FIG. 1 to FIG. 5 with properly opened contacts of the switching device 3 without being acted upon by a reverse torque that acts in the switching direction ON.
  • the two handle halves 2a, 2b of the handle 2 are held together by a tension spring 12.
  • Both the switch-on lever 10 and the switch-off lever 11 of the two-part handle 2 are designed as two-armed levers and are held together by the tension spring 12, which is arranged in relation to the drive shaft 4 on the other side of the locking element 6 between the opposing free lever ends 10a, 11a is.
  • the locking element 6 is designed as a closing slide 13 which can be moved in the longitudinal axis of the handle and has a hook-in opening which, when the handle halves 2a, 2b are pivoted apart, projects in the OFF switching position beyond the end of the handle 2 (FIGS.
  • the closing slide 13 is guided in a longitudinally displaceable manner on the activation lever 10 and is acted upon by a compression spring 15 in the direction of the free end of the activation lever 10. It has a nose 16 directed to the side, which serves as an abutment for the compression spring 15 and as an end stop for the closing slide 13 when the closing position of FIGS. 1, 3 and 4 is reached.
  • the closing slide 13 is covered by the end surface 17, 18 angled on the switch-off lever 11 against the switch-in lever 10 (FIG. 5), thereby preventing the levers 10 and 11 from swinging apart when torque is not present in the OFF-switching direction.
  • the closing slide 13 can also be designed without a compression spring 15. It must then be pulled out of the handle 2 by hand after opening the two handle halves 2a, 2b.
  • a suitable locking element such as e.g. a locking pin
  • pivoting the two handle halves 2a, 2b apart into a suitable locking element such as a stationary locking hole in the base plate.
  • the locking pin can move into the locking hole via a slope by pivoting the switch-off lever.
  • FIG. 6 to 8 show a lockable manual actuation device 1 with a handle 2 for switching a molded housing-encapsulated electrical switching device 3 on and off, for example a circuit breaker, the restoring force of which in the ON direction of its switch lock with welded or fixed switching contacts serves to lock on a Prevent drive shaft 4 of the switching device 3 seated handle.
  • the handle 2 for actuating the switching device 3 is divided into two handle halves 2a, 2b in a plane containing the longitudinal axis 5 of the drive shaft 4.
  • the first handle half 2a serves as a switch-on lever 10 and sits firmly on the drive shaft 4.
  • the second handle half 2b serves as a switch-off lever 11.
  • Both handle halves 2a, 2b are designed as two-armed levers and are held together by a tension spring 12 suspended between them, which is diagonally opposite lying inner sides of a lever arms 10b, 11b is suspended.
  • An integral part of the activation lever 10 on its other lever arm 10a is a locking element 6 with a suspension opening 14 for padlocks for locking the manual control device 1.
  • the activation lever 11 contains an upper cover 19 on its other lever arm 11a, which prevents the insertion of a padlock when the handle 2 is closed .
  • the switch-off lever 11 is mounted relative to the switch-on lever 10 so that it can be pivoted away from the side of the handle 2 in the ON-switching direction against the force of the tension spring 12 about the longitudinal axis 5 of the drive shaft 4.
  • this pivoting is only possible if, when the switch contacts are opened correctly, the activation lever 10 is not acted upon by a reverse torque in the ON switching direction, but rather a torque acting in the OFF switching direction.
  • the handle halves 2a, 2b are designed such that the pivoted switch-off lever 11 with its lever arm 11b can also be extended perpendicularly to the longitudinal axis 5 of the drive shaft 4 against the force of the tension spring 12 from the lever arm 10b of the activation lever 10, as shown in FIG. 6 is shown.
  • the extension stroke of the switch-off lever 11 is limited to the necessary extent by corresponding stop surfaces 20, 21 on the inner sides of the other lever arms 10a, 11b.
  • the angled, free end of the lever arm 11a serves as a locking surface 22 to prevent the switch-off lever 11 from complete manual control device 1 to move back.
  • a locking stop 9 for the extended lever arm 11b of the switch-off lever 11 is formed on the housing cover 24 of the manual operating device 1, by means of which the locked handle 2 is prevented from being moved into the ON switch position.
  • both free ends of the switch lever 10 are covered by end faces 17, 18 angled from the switch lever 11 against the switch lever 10.
  • the switch-off lever 11 thus covers all of the engagement surfaces of the switch-on lever 10 which can be acted upon with a torque in the OFF switching direction, thus preventing the handle halves 2a, 2b from swinging apart when torque is not present in the OFF switching direction.
  • the end surface 18 also serves as a blocking surface 22 for the switch-off lever 11.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (15)

  1. Mécanisme verrouillable de commande manuelle pour la connexion et la déconnexion d'appareils de coupure électriques sous boîtier, en particulier d'appareils à fonction de sectionnement où le verrouillage par manette (2) placée sur l'arbre de commande (4) de l'appareil de coupure (3) est empêché lorsque les contacts de commutation de commande sont soudés ou attachés, caractérisé en ce que la manette (2) est divisée en deux moitiés de manette (2a, 2b) sur un plan contenant l'axe longitudinal (5) de l'arbre de commande (4) de l'appareil de coupure (3), lesdites moitiés de manette étant en direction de commande ON rendues pivotantes séparément l'une de l'autres à l'opposé d'un moment de torsion de ressort les maintenant ensemble par un moment de torsion plus élevé et agissant en direction de commande OFF du verrou de maintien de l'appareil de coupure (3), libérant ou activant ainsi un élément de verrouillage (6), cet élément de verrouillage (6) étant au contraire bloqué ou rendu inactif par chaque actionnement de la manette (2) en direction de commande OFF à l'état non verrouillé.
  2. Mécanisme verrouillable de commande manuelle selon revendication 1, caractérisé en ce que l'élément de verrouillage (6) est disposé entre les moitiés de manette (2a, 2b) et qu'il effectue un engagement de blocage entre des éléments d'arrêt (7,8) fixes, lorsque les moitiés de manette (2a, 2b) sont pivotées séparément l'une de l'autre.
  3. Mécanisme verrouillable de commande manuelle selon revendication 1 ou 2, caractérisé en ce que la manette (2) en deux pièces consiste en une seconde pièce de manette ayant fonction de levier de commutation (10) relié sans jeu à l'arbre de commande (4) de l'appareil de coupure (3) et comprenant en outre l'élément de verrouillage (6) fixable sur le boîtier de l'appareil de coupure (3) ou sur une plaque de base du mécanisme de commande manuelle (1) en position de commande OFF, en ce que le levier de coupure (11) est, à l'opposé du moment de torsion produit par action de ressort, repoussable par rapport au levier de commutation (10) autour de l'arbre de commande (4) ou d'un axe parallèle à celui-ci, du côté de manette (2) situé en direction de commande ON, de sorte qu'il ne libère pour verrouillage l'élément de verrouillage (6) que lors de l'ouverture non perturbée des contacts de commande de l'appareil de coupure (3) et lors de la percussion du levier de commutation (10) par moment de torsion du verrou de maintien en direction de commande OFF dû à repoussement du levier de coupure (11), et en ce que le levier de coupure (11) recouvre toutes les surfaces d'action du levier de commutation (10) percutables par un moment de torsion en direction de commutation OFF.
  4. Mécanisme verrouillable de commande manuelle selon revendication 3, caractérisé en ce que la barre de fermeture (13) est, lorsque la manette est fermée, recouverte par des surfaces de fermeture d'extrémité (17, 18) dirigées du levier d'arrêt (11) au levier de commutation (10).
  5. Mécanisme verrouillable de commande manuelle selon l'une des revendications 1 à 4, caractérisé en ce que les deux moitiés (2a, 2b) de la manette (2) sont maintenues ensemble par un ressort de traction (12).
  6. Mécanisme verrouillable de commande manuelle selon l'un des revendications 3 à 5, caractérisé en ce que le levier de commutation de même que le levier de coupure (11) de la manette en deux pièces (2) se présentent sous forme de leviers à deux bras, et en ce que le ressort de traction 512) est disposé de l'autre côté de l'élément de verrouillage par rapport à l'arbre de commande (4).
  7. Mécanisme verrouillable de commande manuelle selon l'une des revendications 1 à 6, caractérisé en ce que l'élément de verrouillage (6) se présente sous forme d'une barre de fermeture (13) coulissant dans l'axe longitudinal de la manette (2) et disposant d'une ouverture d'accrochage (14) pour un ou plusieurs verrous en étrier, ladite barre de fermeture faisant saillie au-dessus de l'extrémité de la manette (2) lorsque les moitiés de manette (2a, 2b) sont pivotées séparément l'une de l'autre en position de commande OFF, et s'engageant entre les éléments d'arrêt (7,8) existant sur le boîtier d'appareil de coupure (3) ou sur la plaque de base du mécanisme de commande manuelle (1).
  8. Mécanisme verrouillable de commande manuelle selon revendication 7, caractérisé en ce que la barre coulissante de fermeture (13) guidée sur le levier de commutation (10) est percutée par un ressort à pression (15) sur le côté éloigné de l'arbre de commande (4).
  9. Mécanisme verrouillable de commande manuelle selon revendication 8, caractérisé en ce que la barre de fermeture (13) présente un talon (16) dirigé vers le côté, servant d'arrêt pour le ressort à pression (15) et de butée de fin de course pour la barre de fermeture (13) lorsque la position de verrouillage est atteinte.
  10. Mécanisme verrouillable de commande manuelle selon revendication 1, caractérisé en ce que la manette (2) consiste en une première moitié de manette (2a) faisant fonction de levier de commutation (10) et en une seconde moitié de manette (2b) faisant fonction de levier de coupure (11), en ce que le levier de commutation (10) est relié sans jeu à l'arbre de commande (4) et comprend l'élément de verrouillage (6) comme composant intégral, en ce que le levier de coupure (11) peut à l'opposé du moment de torsion produit par l'action d'un ressort par rapport au levier de commutation (10) pivoter en direction de commande ON autour d'un axe parallèle à l'arbre de commande (4) ou d'un axe tombant sur celui-ci, et peut également être sorti perpendiculairement à cet axe en sens inverse de la force produite par l'action d'un ressort, et ce de sorte que l'élément de verrouillage (6) ne soit libéré pour verrouillage que lors de l'ouverture non perturbée des contacts de commande et lors de la percussion du levier de commutation (10) par moment de torsion du verrou de maintien en direction de commande OFF, et en ce que le levier de coupure (11) recouvre toutes les surfaces d'action du levier de commutation (10), lesquelles sont manuellement percutables par un moment de torsion en direction de commutation OFF.
  11. Mécanisme verrouillable de commande manuelle selon revendication 10, caractérisé en ce que le levier de commutation (10) de même que le levier de coupure (11) de la manette en deux pièces (2) se présentent sous forme de leviers à deux bras, et en ce que le levier de coupure (11) présente une couverture supérieure (19) laquelle ne libère l'élément de verrouillage (6) qu'à l'état pivoté et sorti du levier de coupure (11).
  12. Mécanisme verrouillable de commande manuelle selon revendication 10 ou 11, caractérisé en ce que l'élément de verrouillage (6) est pourvu d'une ouverture d'accrochage (14) au moins pour un ou plusieurs verrous en étrier, en ce que des verrous en étrier accrochés bloquent au moyen d'une surface d'arrêt (22) du levier de coupure (11) le mouvement de retour du levier de coupure (11) par une surface d'arrêt (22) du levier de coupure (11), et en ce qu'est prévue, sur un couvercle de boîtier (24) du mécanisme verrouillable de commande manuelle (1), une butée d'arrêt (9) pour limitation de mouvement du levier de coupure pivoté et sorti (11) en position de commande ON.
  13. Mécanisme verrouillable de commande manuelle selon l'une des revendications 10 à 12, caractérisé en ce que les deux moitiés de manette (2a, 2b) sont maintenues ensemble par un ressort de traction (12).
  14. Mécanisme verrouillable de commande manuelle selon revendication 13, caractérisé en ce que le ressort de traction (12) est disposé de l'autre côté de l'élément de verrouillage (6) par rapport à l'arbre de commande (4).
  15. Mécanisme verrouillable de commande manuelle selon l'une des revendications 10 à 14, caractérisé en ce que sur les surfaces internes des moitiés de manette (2a, 2b) sont disposées des surfaces de butée (20, 21) à correspondance réciproque pour la limitation du mouvement de sortie du levier de coupure (11).
EP95116711A 1994-11-04 1995-10-24 Dispositif verrouillable entraîné manuellement pour appareils de commutation blindés Expired - Lifetime EP0710969B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19944439373 DE4439373C1 (de) 1994-11-04 1994-11-04 Abschließbare Handbetätigungsvorrichtung mit einem Handgriff zum Ein- und Ausschalten von gekapselten elektrischen Schaltgeräten, insbesondere von Schaltgeräten mit Trennfunktion
DE4439373 1994-11-04
DE1995137680 DE19537680A1 (de) 1994-11-04 1995-10-10 Abschließbare Handbetätigungsvorrichtung mit einem Handgriff zum Ein- und Ausschalten von gekapselten elektrischen Schaltgeräten, insbesondere von Schaltgeräten mit Trennfunktion
DE19537680 1995-10-10

Publications (2)

Publication Number Publication Date
EP0710969A1 EP0710969A1 (fr) 1996-05-08
EP0710969B1 true EP0710969B1 (fr) 1997-10-08

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Application Number Title Priority Date Filing Date
EP95116711A Expired - Lifetime EP0710969B1 (fr) 1994-11-04 1995-10-24 Dispositif verrouillable entraîné manuellement pour appareils de commutation blindés

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EP (1) EP0710969B1 (fr)
AT (1) ATE159123T1 (fr)
ES (1) ES2110286T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60033632T2 (de) * 2000-04-07 2007-10-31 Hager Electro S.A. Sicherheitseinrichtung für elektrisches Gerät vom Schutzschalter Typ
CZ300740B6 (cs) * 2002-09-16 2009-07-29 Oez S.R.O. Zarízení pro rucní ovládání a blokování spínacích prístroju, zejména jisticu
DE102006058987B4 (de) * 2006-12-14 2013-09-26 Abb Ag Elektrisches Schaltgerät mit einem Drehgriff
DE112015002572A5 (de) * 2014-05-30 2017-02-23 Eaton Electrical Ip Gmbh & Co. Kg Schaltgerät mit absperreinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672746A (en) * 1949-02-10 1954-03-23 Fed Electric Prod Co Switch-handle lock
IT1239465B (it) 1990-04-04 1993-11-02 Cge Comp Gen Elettromecc Mezzi di consenso per il lucchettaggio di dispositivi di comando manuale di apparecchi elettromeccanici
US5302925A (en) * 1993-06-11 1994-04-12 General Electric Company Circuit breaker rotary handle operator with positive on indication
DE4322215C2 (de) * 1993-07-03 1995-08-24 Kloeckner Moeller Gmbh Abschließbarer Drehantrieb für Leistungsschalter

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Publication number Publication date
ES2110286T3 (es) 1998-02-01
EP0710969A1 (fr) 1996-05-08
ATE159123T1 (de) 1997-10-15

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