EP2605264B1 - Auxiliary contact actuating device in an electric switchgear apparatus - Google Patents

Auxiliary contact actuating device in an electric switchgear apparatus Download PDF

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Publication number
EP2605264B1
EP2605264B1 EP12306325.7A EP12306325A EP2605264B1 EP 2605264 B1 EP2605264 B1 EP 2605264B1 EP 12306325 A EP12306325 A EP 12306325A EP 2605264 B1 EP2605264 B1 EP 2605264B1
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EP
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Prior art keywords
crank arm
shaft
aforementioned
contacts
called
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EP12306325.7A
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German (de)
French (fr)
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EP2605264A1 (en
Inventor
Alain Brouillat
Patrice Garavelli
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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    • 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
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

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

Description

La présente invention concerne un dispositif d'actionnement des contacts auxiliaires destinés à signaler l'état des contacts principaux dans un appareil électrique de coupure, ledit dispositif comportant une bielle reliée de manière articulée par l'une dite première de ses extrémités, à un arbre dit premier de manoeuvre des contacts principaux et par son extrémité opposée, dite seconde, à une manivelle d'actionnement des contacts auxiliaires montée rotative par rapport au support de l'appareil entre une première et une seconde position correspondant respectivement à une position ouverte et à une position fermée des contacts principaux de l'appareil, ladite manivelle étant couplée audit arbre dit premier de telle manière que, en position ouverte des contacts principaux, la manivelle est dans la première position précitée, alors qu'en position fermée des contacts principaux, la manivelle est dans la seconde position précitée.The present invention relates to a device for actuating the auxiliary contacts intended to signal the state of the main contacts in an electrical switchgear, said device comprising a connecting rod hingedly connected by a said first of its ends to a shaft. said first operation of the main contacts and its opposite end, said second, to a crank actuating the auxiliary contacts rotatably mounted relative to the support of the apparatus between a first and a second position respectively corresponding to an open position and to a closed position of the main contacts of the apparatus, said crank being coupled to said shaft said first such that, in the open position of the main contacts, the crank is in the aforementioned first position, while in the closed position of the main contacts, the crank is in the second position mentioned above.

Les disjoncteurs et interrupteurs haute ou moyenne tension et basse tension de puissance utilisent des contacts auxiliaires destinés par exemple à signaler l'état des contacts principaux de puissance. En particulier, le document EP 0 454 018 A2 divulgue un dispositif d'actionnement des contacts auxiliaires selon le préambule de la revendication 1. Dans les dispositifs d'actionnement connus, ces contacts auxiliaires sont actionnés par un système de bielles qui prend son déplacement sur le dispositif de commande des contacts principaux.High and medium voltage and low voltage circuit breakers and switches use auxiliary contacts intended for example to indicate the status of the main power contacts. In particular, the document EP 0 454 018 A2 discloses a device for actuating the auxiliary contacts according to the preamble of claim 1. In the known actuators, these auxiliary contacts are actuated by a system of rods which takes its movement on the control device of the main contacts.

Or, ce système de commande des contacts principaux est un système mécanique relativement imprécis par le fait d'une part, que de nombreuses pièces sont mises en mouvement avec une chaine cinématique longue et d'autre part, que les chocs de fermeture et d'ouverture des contacts principaux peuvent générer des rebonds dans le système de commande.However, this control system of the main contacts is a relatively imprecise mechanical system on the one hand, that many parts are set in motion with a long kinematic chain and secondly, that the closing shocks and opening of the main contacts can generate rebounds in the control system.

Ces deux problèmes peuvent engendrer des courses incomplètes du système de commande des contacts auxiliaires et donc des défauts de commutation de ces contacts. Ceci conduit au fait que les contacts auxiliaires peuvent donc donner des informations erronées sur la position des contacts principaux.These two problems can cause incomplete races of the control system of the auxiliary contacts and therefore the switching faults of these contacts. This leads to the fact that the auxiliary contacts can therefore give erroneous information on the position of the main contacts.

La présente invention résout ces problèmes et propose un dispositif d'actionnement des contacts auxiliaires dans un appareil de protection électrique, de conception simple et permettant de fiabiliser la commutation des contacts auxiliaires, ainsi qu'un appareil de protection électrique comportant un tel dispositif.The present invention solves these problems and proposes a device for actuating the auxiliary contacts in an electrical protection device, of simple design and making reliable the switching of the auxiliary contacts, and an electrical protection device comprising such a device.

A cet effet, la présente invention a pour objet un dispositif d'actionnement des contacts auxiliaires selon la revendication 1.For this purpose, the subject of the present invention is a device for actuating the auxiliary contacts according to claim 1.

Selon une autre caractéristique, les contacts auxiliaires précités comportent au moins un contact auxiliaire fixe par rapport au support de l'appareil et au moins un contact auxiliaire mobile solidaire de la manivelle.According to another feature, the aforementioned auxiliary contacts comprise at least one auxiliary contact fixed relative to the support of the device and at least one movable auxiliary contact integral with the crank.

Selon une autre caractéristique, le dispositif bistable élastique précité comporte un dispositif à tige télescopique, ledit dispositif comportant une première et une seconde tige montées coulissantes l'une par rapport à l'autre, et autour desquelles est monté un ressort, l'une desdites tiges étant reliée de manière articulée par son extrémité libre sur le châssis de l'appareil, tandis que l'autre des tiges est reliée de manière articulée par son extrémité libre à la manivelle, ledit ressort étant en appui par l'une de ses extrémités sur une surface d'appui appartenant à la première tige et par son extrémité opposée sur une surface d'appui appartenant à la seconde tige.According to another characteristic, the aforementioned resilient bistable device comprises a device with a telescopic rod, said device comprising a first and a second rod mounted sliding relative to each other, and around which is mounted a spring, one of said rods being hingedly connected by its free end to the frame of the apparatus, while the other of the rods is hingedly connected by its free end to the crank, said spring being supported by one of its ends on a bearing surface belonging to the first rod and its opposite end on a bearing surface belonging to the second rod.

L'invention a encore pour objet un appareil de protection électrique comportant un dispositif d'actionnement des contacts auxiliaires comportant les caractéristiques précédemment mentionnées. Selon une caractéristique particulière, cet appareil est un interrupteur ou un disjoncteur haute ou moyenne tension ou basse tension de puissance.The invention also relates to an electrical protection device comprising a device for actuating the auxiliary contacts having the characteristics mentioned above. According to a particular characteristic, this device is a switch or a circuit breaker high or medium voltage or low voltage power.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La figure 1 est une vue partielle illustrant un dispositif d'actionnement des contacts auxiliaires d'un interrupteur selon l'invention, cette figure montrant en particulier une symbolisation S de la chaîne cinématique du fonctionnement du dispositif,
  • La figure 2 est une vue identique à la figure précédente, illustrant le dispositif selon l'invention mis en service dans un interrupteur, le dispositif étant en position stable fermée des contacts auxiliaires,
  • La figure 3 est une vue identique à la précédente, le dispositif étant dans une position intermédiaire entre la position fermée et la position ouverte, après le passage du point mort du ressort lors d'une opération d'ouverture,
  • La figure 4 est une vue identique à la figure précédente, le dispositif étant dans une position ouverte des contacts auxiliaires.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a partial view illustrating a device for actuating the auxiliary contacts of a switch according to the invention, this FIG. particular a symbolization S of the kinematic chain of the operation of the device,
  • The figure 2 is a view identical to the previous figure, illustrating the device according to the invention operated in a switch, the device being in a closed stable position of the auxiliary contacts,
  • The figure 3 is a view identical to the previous one, the device being in an intermediate position between the closed position and the open position, after the passage of the neutral point of the spring during an opening operation,
  • The figure 4 is a view identical to the previous figure, the device being in an open position of the auxiliary contacts.

Sur les figures, une partie du mécanisme d'un interrupteur I moyenne tension est représenté, ledit mécanisme comportant un dispositif d'actionnement D des contacts auxiliaires selon l'invention. Cet interrupteur comporte des contacts dits principaux (non représentés), comportant des contacts mobiles principaux entraînés par un arbre de commande non représenté relié mécaniquement à l'arbre dit premier de la manivelle 1, lesdits contacts mobiles étant destinés à coopérer avec des contacts principaux fixes. Ce mécanisme comporte également de manière connue en soi des contacts auxiliaires dont la fonction, dans cette réalisation particulière de l'invention, est de donner une indication sur l'état fermé ou ouvert des contacts principaux. Ces contacts auxiliaires sont situés entre deux flasques 2 appartenant à un support dit support des contacts auxiliaires, tel que le flasque représenté sur les figures, et comprennent des contacts auxiliaires dits fixes et des contacts auxiliaires dits mobiles, lesdits contacts auxiliaires dits mobiles étant solidaires d'un arbre (non visible sur les figures) d'axe Y apte à être entraîné par une manivelle 4, laquelle manivelle est entraînée par le dispositif d'actionnement D selon l'invention entre une position dans laquelle les contacts mobiles auxiliaires sont éloignés de leurs contacts fixes respectifs, et une position dans laquelle les contacts mobiles auxiliaires sont en contact électrique avec leurs contacts fixes respectifs.In the figures, a part of the mechanism of a switch I medium voltage is shown, said mechanism comprising an actuating device D auxiliary contacts according to the invention. This switch comprises so-called main contacts (not shown), comprising main movable contacts driven by a not shown control shaft mechanically connected to said first shaft of the crank 1, said movable contacts being intended to cooperate with fixed main contacts . This mechanism also comprises, in a manner known per se, auxiliary contacts whose function, in this particular embodiment of the invention, is to give an indication of the closed or open state of the main contacts. These auxiliary contacts are located between two flanges 2 belonging to a support said supporting auxiliary contacts, such as the flange shown in the figures, and comprise so-called fixed auxiliary contacts and so-called mobile auxiliary contacts, said auxiliary contacts called mobile being integral with a shaft (not visible in the figures) of axis Y adapted to be driven by a crank 4, which crank is driven by the actuating device D according to the invention between a position in which the auxiliary movable contacts are moved away from their respective fixed contacts, and a position in which the auxiliary moving contacts are in electrical contact with their respective fixed contacts.

On notera que ces contacts peuvent être des contacts à trois plages comportant une entrée et deux sorties.Note that these contacts may be three-slot contacts having one input and two outputs.

Cette manivelle 4 est reliée de manière articulée par l'une 4a de ses extrémités au châssis C de l'interrupteur, étant solidarisée en même temps à cette même extrémité, à l'arbre Y supportant les contacts mobiles auxiliaires, et est solidarisée de manière articulée par son extrémité opposée 4b, à un arbre 3 relié de manière articulée à un dispositif télescopique à ressort 7. Cette manivelle 4 est également reliée mécaniquement au dispositif d'actionnement D selon l'invention de la manière qui va être décrite dans ce qui suit.This crank 4 is connected in an articulated manner by one end 4a to the frame C of the switch, being secured at the same time to the same end, to the shaft Y supporting the auxiliary moving contacts, and is secured in a manner articulated by its opposite end 4b, to a shaft 3 connected in a hinged manner to a telescopic spring device 7. This crank 4 is also mechanically connected to the actuating device D according to the invention in the manner to be described in what follows. follows.

Ce dispositif d'actionnement D comporte, comme dans les dispositifs de l'art antérieur, une bielle 5 comportant une première extrémité 5a reliée de manière articulée à la manivelle 1 de l'arbre dit premier, et une seconde extrémité 5b opposée à la première, reliée de manière articulée à la manivelle précitée 4 en un point situé entre l'axe d'articulation Y de la manivelle 4 au châssis C et l'extrémité 4b de la manivelle supportant l'arbre 3 relié de manière articulée au dispositif télescopique.This actuating device D comprises, as in the devices of the prior art, a rod 5 having a first end 5a hingedly connected to the crank 1 of said first shaft, and a second end 5b opposite the first , hingedly connected to the aforementioned crank 4 at a point between the hinge axis Y of the crank 4 to the frame C and the end 4b of the crank supporting the shaft 3 connected in an articulated manner to the telescopic device.

On notera que l'arbre dit premier est un arbre secondaire solidaire en rotation de l'arbre d'entraînement des contacts principaux.Note that the said first shaft is a secondary shaft rotatably connected to the drive shaft of the main contacts.

Conformément à une réalisation particulière de l'invention, la bielle 5 comporte à sa première extrémité précitée 5a, une lumière 6 traversée par l'axe d'articulation X de la bielle 5 sur la manivelle 1. Conformément à l'invention également, le dispositif d'actionnement D des contacts auxiliaires comporte un dispositif télescopique 7 à ressort 9 comportant une tige 8 constituée par deux parties coulissantes l'une par rapport à l'autre 8a,8b, respectivement une première partie 8a reliée de manière articulée par son extrémité libre sur le châssis C du mécanisme, et une seconde partie 8b reliée de manière articulée à la manivelle 4, le ressort précité 9 étant monté autour desdites tiges 8a,8b. Ce ressort 9 est en appui par l'une de ses extrémités sur une surface d'appui 8c appartenant à une partie d'extrémité de la partie 8a de la tige reliée de manière articulée au châssis, tandis que l'extrémité opposée du ressort 9 est en appui sur une surface d'appui 8d appartenant à une partie d'extrémité appartenant à la seconde partie 8b de tige 8, laquelle est reliée de manière articulée à la manivelle 4. Le ressort 9 est conformé et dimensionné de telle manière que lorsqu'il est en position déployée, il rappelle la manivelle 4 vers les deux positions stables dites première et seconde précitées correspondant à une position ouverte et à une position fermée des contacts auxiliaires, ces positions correspondant respectivement à une position ouverte et à une position fermée des contacts principaux.
Le fonctionnement du dispositif selon l'invention va être décrit dans ce qui suit en référence aux figures 1,2,3 et 4.
Sur les figures 1 et 2, les contacts principaux de l'interrupteur I sont fermés. La manivelle 4 est en appui sur une partie formant butée 10 du support des contacts auxiliaires, grâce au ressort 9 du système bistable. La position de la manivelle 4 est indépendante de la position de l'arbre dit premier grâce à la liaison dite incomplète (6,X) de la bielle 5 avec la manivelle 1 de l'arbre dit premier, laquelle liaison permet de réaliser un découplage de l'arbre 1 et de la bielle 5 précités à partir du moment où le ressort 9 commence à entraîner la manivelle, après le passage d'une ligne de passage de point mort P, position dans laquelle l'axe longitudinal Z des parties de tige 8a,8b et du ressort 9 passe par l'axe d'articulation Y de la manivelle 4 par rapport au châssis de l'appareil, cet axe correspondant à l'axe de rotation des contacts auxiliaires.According to a particular embodiment of the invention, the connecting rod 5 comprises at its first end 5a, a hole 6 through which the hinge axis X of the connecting rod 5 passes to the crank 1. According to the invention also, the actuating device D of the auxiliary contacts comprises a telescopic device 7 having a spring 9 comprising a rod 8 constituted by two sliding parts with respect to each other 8a, 8b, respectively a first part 8a hingedly connected by its end free on the frame C of the mechanism, and a second portion 8b hingedly connected to the crank 4, the aforementioned spring 9 being mounted around said rods 8a, 8b. This spring 9 is supported by one of its ends on a bearing surface 8c belonging to an end portion of the portion 8a of the rod hingedly connected to the frame, while the opposite end of the spring 9 is resting on a bearing surface 8d belonging to an end portion belonging to the second rod portion 8b 8, which is hingedly connected to the crank 4. The spring 9 is shaped and dimensioned so that when it is in the deployed position, it recalls the crank 4 to the two aforementioned first and second stable positions corresponding to an open position and to a closed position of the auxiliary contacts, these positions respectively corresponding to an open position and to a closed position of the contacts key.
The operation of the device according to the invention will be described in the following with reference to figures 1 , 2 , 3 and 4 .
On the figures 1 and 2 , the main contacts of the switch I are closed. The crank 4 is supported on a stop portion 10 of the support of the auxiliary contacts, thanks to the spring 9 of the bistable system. The position of the crank 4 is independent of the position of the said first shaft thanks to the so-called incomplete connection (6, X) of the connecting rod 5 with the crank 1 of the shaft said first, which connection makes it possible to decoupling of the shaft 1 and the rod 5 above from the moment when the spring 9 begins to drive the crank, after the passage of a dead point crossing line P, position in which the longitudinal axis Z of the parts of rod 8a, 8b and spring 9 passes through the hinge axis Y of the crank 4 relative to the frame of the device, this axis corresponding to the axis of rotation of the auxiliary contacts.

Sur la figure 3, est représenté le passage de l'interrupteur I et du dispositif d'actionnement D des contacts auxiliaires, d'une position fermée à une position ouverte. Au début de ce mouvement, l'arbre d'entraînement 1 des contacts principaux entraîne la manivelle 4 dans le sens horaire par le fait que pendant ce premier mouvement, l'axe d'articulation X de l'arbre d'entraînement des contacts principaux par rapport à la bielle, se situe à l'extrémité dite première 6a de la lumière 6 prévue dans la bielle 5 de manière à pouvoir l'entraîner. Une fois arrivée dans une position dite de passage de point mort du dispositif bistable à ressort 7, illustrée par la ligne P, dans laquelle son axe Z passe par l'axe Y, le déplacement de la manivelle 4 est pris en charge par le ressort 9, lequel exerce un effort sur la manivelle 4 jusqu'au positionnement de celle-ci sur une butée dite seconde 11 du support des contacts auxiliaires, position illustrée sur la figure 4 dans laquelle le dispositif d'actionnement des contacts auxiliaires est dans une position stable ouverte, indiquant une position ouverte des contacts principaux.On the figure 3 , there is shown the passage of the switch I and the actuator D auxiliary contacts, a closed position to an open position. At the beginning of this movement, the drive shaft 1 of the main contacts drives the crank 4 in the clockwise direction by the fact that during this first movement, the axis of articulation X of the drive shaft of the main contacts relative to the connecting rod, is located at the end said first 6a of the slot 6 provided in the rod 5 so as to be able to drive. Once arrived in a so-called neutral position of the bistable spring device 7, illustrated by the line P, in which its axis Z passes through the axis Y, the movement of the crank 4 is supported by the spring 9, which exerts a force on the crank 4 until positioning thereof on a so-called second stop 11 of the support of the auxiliary contacts, position illustrated on the figure 4 wherein the device for actuating the auxiliary contacts is in a stable open position, indicating an open position of the main contacts.

Pendant ce second déplacement, l'axe d'articulation précité X se déplace dans la lumière 6 en direction de l'autre extrémité 6b dite seconde de la lumière 6 de la bielle 5 de manière que les efforts exercés sur la manivelle 4 par le ressort 9 dans cette seconde partie de mouvement ne produisent pas d'effort sur l'arbre d'entraînement 1 des contacts principaux. A la fin de ce second déplacement, l'axe d'articulation X se situe à proximité de l'extrémité dite seconde 6b de la lumière 6 opposée à la première 6a et n'est donc pas en contact avec l'extrémité de la lumière, la butée réelle étant en 11.During this second displacement, the aforementioned hinge axis X moves in the light 6 towards the other end 6b said second light 6 of the rod 5 so that the forces exerted on the crank 4 by the spring 9 in this second part of movement do not produce stress on the drive shaft 1 of the main contacts. At the end of this second displacement, the hinge axis X is located near the so-called second end 6b of the light 6 opposite the first 6a and is therefore not in contact with the end of the light , the actual stop being at 11.

De la même manière, lorsque l'appareil passe de la position stable ouverte représentée sur la figure 4 à la position stable fermée représentée sur la figure 2, l'arbre 1 d'entraînement des contacts principaux est entraîné dans le sens anti-horaire, ce qui entraîne le déplacement de la bielle 5, puis la rotation dans le même sens anti-horaire de la manivelle 4 à l'encontre du ressort 9 du système bistable à ressort jusqu'à ce que celui-ci passe sa position de point mort et devienne moteur en exerçant sur la manivelle un effort permettant son mouvement en rotation dans le même sens anti-horaire jusqu'à ce que cette manivelle vienne en butée sur la première partie formant butée 10 du support des contacts auxiliaires.In the same way, when the device moves from the open stable position shown on the figure 4 at the closed stable position shown on the figure 2 , the drive shaft 1 of the main contacts is driven in the counterclockwise direction, which causes the displacement of the connecting rod 5, then the rotation in the same anti-clockwise direction of the crank 4 against the spring 9 of the bistable spring system until the latter passes its neutral position and becomes a motor by exerting on the crank a force allowing its rotational movement in the same anti-clockwise direction until this crank comes from abutting on the first abutment portion 10 of the support of the auxiliary contacts.

De la même manière que décrit précédemment pour le passage de la position fermée à la position ouverte, pendant le premier mouvement de la manivelle 4 avant le dépassement par le ressort 9 de la ligne P de passage de point mort, l'arbre d'entraînement 1 des contacts principaux est accouplé à celui Y entraînant les contacts auxiliaires par le fait que l'axe X se trouve à la seconde extrémité 6b de la lumière 6, cet axe permettant l'entraînement de la bielle par l'arbre. Lorsque l'on arrive au voisinage de la position de passage de point mort du ressort, l'axe X commence à se déplacer dans la lumière 6, ceci ayant pour effet de désaccoupler progressivement l'arbre 1 d'entraînement des contacts principaux et la bielle 5, et par là, les deux arbres 1,Y respectivement d'entraînement des contacts principaux et des contacts auxiliaires. Après le passage de cette position par le ressort 9, celui-ci prend le relais de la bielle 5 pour entraîner la manivelle 4 jusqu'à la première butée précitée 10 du support de contact, position illustrée sur la figure 2 dans laquelle les contacts auxiliaires sont dans une position fermée indiquant une position fermée des contacts principaux.In the same manner as described above for the transition from the closed position to the open position, during the first movement of the crank 4 before the spring 9 overcomes the dead center passage line P, the drive shaft 1 of the main contacts is coupled to that Y causing the auxiliary contacts in that the X axis is at the second end 6b of the slot 6, this axis for driving the rod by the shaft. When one arrives in the vicinity of the position of passage of neutral point of the spring, the X axis begins to move in the light 6, this having the effect of gradually disconnecting the drive shaft 1 of the main contacts and the connecting rod 5, and thereby the two shafts 1, Y respectively driving the main contacts and auxiliary contacts. After the passage of this position by the spring 9, it takes over the rod 5 to drive the crank 4 to the first abutment 10 of the contact support, position illustrated on the figure 2 wherein the auxiliary contacts are in a closed position indicating a closed position of the main contacts.

La présente invention permet de résoudre les défauts potentiels de commutation des contacts auxiliaires et d'améliorer ainsi la qualité des informations données aux clients sur l'état des contacts principaux.
Ceci est réalisé en rendant la commutation des contacts auxiliaires indépendante des variations du système de manoeuvre des contacts principaux, grâce au découplage mécanique partiel entre l'arbre d'entraînement des contacts mobiles principaux et de l'arbre d'entraînement des contacts auxiliaires mobiles.
Ce découplage mécanique est avantageusement réalisé au moyen du dispositif bistable à ressort en combinaison avec la liaison incomplète entre la bielle et l'arbre de commande des contacts principaux.
Ce découplage mécanique partiel permet de désolidariser les deux arbres pour de faibles débattements angulaires desdits arbres (rebonds...), de rattraper des jeux, et d'éviter la création et la transmission d'efforts mécaniques résiduels constants dans les embiellages de liaison.
Ce dispositif bistable à ressort permet d'obtenir un positionnement précis de la manivelle par rapport au support des contacts auxiliaires, grâce à la mise en butée réalisée par le ressort ayant un rôle moteur, garantissant la fin de course de la manivelle en position ouverte ou fermée des contacts principaux. Ainsi, les points de commutation sont atteints, de manière répétable grâce au dispositif d'entraînement bistable en combinaison avec les moyens de liaison incomplète.The present invention makes it possible to solve the potential switching faults of the auxiliary contacts and thus to improve the quality of the information given to the customers on the status of the main contacts.
This is done by making the switching of the auxiliary contacts independent of the variations of the operating system of the main contacts, thanks to the partial mechanical decoupling between the drive shaft of the main movable contacts and the drive shaft of the moving auxiliary contacts.
This mechanical decoupling is advantageously achieved by means of the bistable spring device in combination with the incomplete connection between the connecting rod and the control shaft of the main contacts.
This partial mechanical decoupling makes it possible to separate the two shafts for low angular deflections of said shafts (rebounds ...), to make up games, and to avoid the creation and transmission of constant residual mechanical forces in the linkage links.
This bistable device with spring makes it possible to obtain precise positioning of the crank with respect to the support of the auxiliary contacts, thanks to the abutment carried out by the spring having a motor function, guaranteeing the end of travel of the crank in the open position or closed main contacts. Thus, the switching points are achieved repeatedly by the bistable driver in combination with the incomplete link means.

La conception du dispositif permet de créer une chaîne cinématique courte donc précise mettant en jeu trois dimensions de pièces à savoir une dimension sur la manivelle 4, une dimension sur le bloc-contact auxiliaire et une dimension sur le support de contacts auxiliaire 10,11.The design of the device makes it possible to create a short and precise kinematic chain involving three dimensions of parts namely a dimension on the crank 4, a dimension on the auxiliary contact block and a dimension on the auxiliary contact support 10,11.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example.

C'est ainsi par exemple que selon un mode simplifié, l'axe d'articulation de la tige en deux parties supportant le ressort sur la manivelle pourra être le même que l'axe d'articulation de la bielle sur la manivelle.Thus, for example, according to a simplified embodiment, the axis of articulation of the rod in two parts supporting the spring on the crank may be the same as the axis of articulation of the connecting rod on the crank.

De même, le dispositif bistable à ressorts pourra être remplacé par un ensemble comportant des ressorts rotatifs pris d'un côté sur la manivelle et de l'autre, sur un support fixe.Similarly, the spring bistable device may be replaced by an assembly comprising rotating springs taken from one side on the crank and the other on a fixed support.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont réalisées suivant les revendications.On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are made according to the claims.

Claims (5)

  1. Device for actuating the auxiliary contacts designed to signal the state of the main contacts in an electric switchgear apparatus, the said device comprising a connecting rod connected in an articulated manner by one called the first of its ends, to a shaft called the first for operating the main contacts and by its opposite end, called the second, to an actuating crank arm for actuating the auxiliary contacts that is mounted so as to rotate relative to the support of the apparatus between a first and a second positions corresponding respectively to an open position and to a closed position of the main contacts of the apparatus, the said crank arm being coupled to the said shaft called the first shaft in such a way that, in the open position of the main contacts, the crank arm is in the aforementioned first position, whereas in the closed position of the main contacts the crank arm is in the aforementioned second position, the said actuating device comprising means for mechanically partially uncoupling the shaft called the first shaft (1) from the crank arm (4) in the vicinity of the open and closed positions of the main contacts, and additional means (7) driving the crank arm (4) that are capable of driving the crank arm towards the aforementioned first or second positions when the aforementioned shaft called the first shaft (1) and the crank arm (4) are uncoupled, these additional driving means comprising a sprung bistable device (7), the said device comprising a neutral-point passing position, and interacting with the aforementioned crank arm (4) in such a way that the said additional device drives the crank arm (4) towards the aforementioned first position or second position, after the passing of the device in one direction or respectively in the other, beyond the neutral-point position, the means for uncoupling the shaft called the first shaft (1) and the crank arm (4) comprising incomplete connecting means (6,X) between the connecting rod (5) and the shaft called the first shaft (1), characterized in that, in the aforementioned first and second positions, the crank arm (4) is positioned on respectively two portions forming an abutment (10, 11) belonging to a fixed support of the frame of the apparatus, the abutting being achieved by the spring (7) that has a driving role, ensuring the end-of-travel of the crank arm, and in that these incomplete connecting means (6,X) comprise an opening (6) provided at the end called the first end (5a) of the aforementioned connecting rod (5), the said opening (6) being traversed by the articulation spindle X of the connecting rod on the shaft called the first shaft (1).
  2. Actuating device according to Claim 1, characterized in that the aforementioned auxiliary contacts comprise at least one auxiliary contact that is fixed relative to the support of the apparatus and at least one auxiliary contact that can be moved and is secured to the crank arm (4).
  3. Actuating device according to Claim 1 or 2, characterized in that the aforementioned sprung bistable device (7) comprises a device with a telescopic rod, the said device comprising a first and a second rod (8a, 8b) mounted so as to slide relative to one another, and around which a spring (9) is mounted, one (8a) of the said rods being connected in an articulated manner by its free end to the frame C of the apparatus, while the other (8b) of the said rods is connected in an articulated manner by its free end to the crank arm (4), the said spring (9) resting by one of its ends on a bearing surface (8c) belonging to the first rod (8a) and by its opposite end on a bearing surface (8d) belonging to the second rod (8b).
  4. Electrical protection apparatus comprising an auxiliary contact actuating device according to any one of Claims 1 to 3.
  5. Electrical protection apparatus according to Claim 4, characterized in that it is a high- or medium-voltage or low-voltage power switch or circuit breaker.
EP12306325.7A 2011-12-15 2012-10-25 Auxiliary contact actuating device in an electric switchgear apparatus Active EP2605264B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103847A FR2984588B1 (en) 2011-12-15 2011-12-15 DEVICE FOR ACTUATING AUXILIARY CONTACTS IN AN ELECTRICAL CUTTING APPARATUS

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EP2605264A1 EP2605264A1 (en) 2013-06-19
EP2605264B1 true EP2605264B1 (en) 2017-09-13

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EP12306325.7A Active EP2605264B1 (en) 2011-12-15 2012-10-25 Auxiliary contact actuating device in an electric switchgear apparatus

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EP (1) EP2605264B1 (en)
CN (1) CN103165304B (en)
FR (1) FR2984588B1 (en)

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Publication number Priority date Publication date Assignee Title
CN106847638A (en) * 2017-03-14 2017-06-13 江苏高博锐电气有限公司 A kind of plug-in auxiliary contact
DE102018201913A1 (en) * 2018-02-07 2019-08-08 Siemens Aktiengesellschaft Module for a rotary drive of an electrical switch, electrical switch with such a module and method for switching an electrical switch
CN112705808B (en) * 2020-12-27 2022-06-07 南昌明高科技有限公司 SMT (surface Mount technology) stepped template welding method and device
US11715612B2 (en) * 2020-12-29 2023-08-01 Schneider Electric USA, Inc. Low impact auxiliary switch mechanically operated contacts (MOC) mechanism

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Publication number Priority date Publication date Assignee Title
BE482394A (en) * 1943-03-15
FR2589626B1 (en) * 1985-10-31 1989-03-03 Merlin Gerin CONTROL MECHANISM OF A CIRCUIT BREAKER EQUIPPED WITH AN ENERGY ACCUMULATING SYSTEM
NL8803018A (en) * 1988-12-08 1990-07-02 Holec Syst & Componenten Electric switch operated by rotating shaft via lever system
DE4013272A1 (en) * 1990-04-26 1991-10-31 Abb Patent Gmbh ELECTRICAL SWITCHGEAR
FR2777694B1 (en) * 1998-04-17 2000-05-26 Schneider Electric Ind Sa AUXILIARY SIGNALING BLOCK ADAPTABLE TO A PROTECTION CIRCUIT BREAKER

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Also Published As

Publication number Publication date
EP2605264A1 (en) 2013-06-19
CN103165304B (en) 2018-09-21
FR2984588A1 (en) 2013-06-21
FR2984588B1 (en) 2015-06-12
CN103165304A (en) 2013-06-19

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