EP1197982B1 - Electrical and mechanical locking device to be coupled to two contactors in order to prevent simultaneous closure - Google Patents

Electrical and mechanical locking device to be coupled to two contactors in order to prevent simultaneous closure Download PDF

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Publication number
EP1197982B1
EP1197982B1 EP20010402324 EP01402324A EP1197982B1 EP 1197982 B1 EP1197982 B1 EP 1197982B1 EP 20010402324 EP20010402324 EP 20010402324 EP 01402324 A EP01402324 A EP 01402324A EP 1197982 B1 EP1197982 B1 EP 1197982B1
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EP
European Patent Office
Prior art keywords
lever
contact
housing
arm
contactor
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
EP20010402324
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German (de)
French (fr)
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EP1197982A1 (en
Inventor
Fabrice Bianchi
Bernard Drutel
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.)
ABB Control SA
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ABB Control SA
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Publication date
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Publication of EP1197982A1 publication Critical patent/EP1197982A1/en
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Publication of EP1197982B1 publication Critical patent/EP1197982B1/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H01H2050/325—Combined electrical and mechanical interlocking, e.g. usually for auxiliary contacts

Definitions

  • the present invention relates to an electrical and mechanical locking device for contactors.
  • such an electrical and mechanical locking device is associated with two contactors to prohibit their simultaneous closure.
  • the locking device mechanically prevents the closing of the other contactor and opens the supply circuit of the coil of said second contactor.
  • This type of installation with two contactors and locking device is for example used in electric motor drives to provide reversals or star-delta start.
  • a locking device is for example known from the patent FR 94 14211 of the applicant.
  • the device described in this patent consists of a flat housing closed by a cover inside which are mounted two levers movable in rotation and each being driven by a power take-off linked to the slide of one of the contactors.
  • Said levers are shaped at a first end so that when one of them is rotated by the closing of the contactor slider to which it is connected, its first end is brought into a position for which it maintains the first end. the other lever in the rest position for which the contactor associated with it is open.
  • each lever carries a movable contact cooperating with fixed contacts to close the supply circuit of a contactor coil, each lever carries the movable contact cooperating with the supply circuit of the coil of the contactor with which it is not in relation.
  • the disadvantage of these locking devices is that under certain particularly severe conditions of use, the device can be subjected to shocks or vibrations such that at least one of the movable contacts carried by the levers is brought to leave his home.
  • the loss of a moving contact poses two problems, firstly the opening of the supply circuit of the coil of one of the contactors and secondly a risk of inadvertent short-circuit since the moving contact moves in the case completely randomly.
  • the present invention aims to provide a locking device of the same type as that described in the prior patent of the Applicant which does not have this disadvantage.
  • the invention relates to an electrical and mechanical locking device intended to be associated with two contactors to prevent their simultaneous closing, said device comprising a housing carrying two input connections and two output connections connected to the circuits supplying the coils of the contactors and in which are mounted two levers respectively movable in rotation about an axis, each contactor coil supply circuit arranged between an input connection and an output connection comprising an opening contact , each lever carrying a power take-off axis by which it is connected to the movement of the slider of a contactor, having on the one hand a first end intended to mechanically cooperate with the first end of the other lever in the working position and secondly a second end, carried by an arm, intended to ensure the opening of the opening contact of the supply circuit of the coil of the contactor cooperating with the other lever, characterized in that each opening contact is constituted by two conductive strips which are in contact by their free ends in their normal position of rest.
  • the locking devices are represented without the cover which normally closes the front face of the housing 1 and is held in place by the cooperation of columns with the wells 17 of the housing 1.
  • the locking device is intended to be mounted between two contactors not shown in the drawing.
  • a first contactor will be arranged against the bottom of the housing 1 shown in the drawing and a second contactor will be arranged against the cover closing the front face of said housing 1.
  • Hanging means 6 partially visible in the drawing allow the attachment of the housing from the locking device to the contactors between which it is arranged.
  • the housing 1 has three connections on one of its lateral faces and a connection on the other side face.
  • the lateral face 10 of the housing 1 disposed on the right of the drawings comprises two connections 12, 14 respectively input and output forming part of the supply circuit of the coil of the first contactor disposed against the bottom of the housing and the connection of the input 13 of the supply circuit of the coil of the second contactor disposed against the not shown cover of the housing 1, while the second side face 11 carries the output connection 15 of the supply circuit of the coil of the second contactor.
  • Another arrangement of said connections could of course be implemented without departing from the invention.
  • the locking device comprises two levers 2 and 3 rotatably mounted respectively about the axes 20 and 30 and returned to their rest position shown in Figures 1 and 2 by springs 21, 31.
  • Each lever 2 , 3 carries a power take-off axis by which it is connected to the movement of the contactor slider with which it cooperates, only the axis 39 of the lever 3 is visible in the drawing.
  • Each lever 2, 3 has a first end 22, 32 for mechanically cooperating with the first end of the other lever in the working position and a second end 23, 33; 26, 36 carried by an arm 25, 35 and intended to ensure the opening of the supply circuit of the coil of the contactor cooperating with the other lever.
  • Figure 3 shows a working position of the locking device for which the lever 2 has been moved in rotation about its axis 20 due to the closing of the contactor to which it is connected.
  • the first end 22 of said lever 2 is positioned against the first end 32 of the lever 3 and constitutes a stop which condemns the rotation of said lever 3 and thus makes it impossible to close the contactor slide connected to this lever 3.
  • the levers 2 and 3 intersect in their middle part, and the arm 25 carrying the second end 23 is disposed between the bottom of the housing and the arm 35 of the lever 3, that is to say under said arm 35.
  • each of the contactor coil supply circuits respectively extending between the connections 12 and 14 and between the connections 13 and 15, comprises an opening contact constituted by two conductive strips 112, 114; 113, 115 in the variant of embodiment of Figure 1 and 212, 214; 213, 215 in the alternative embodiment of Figures 2 and 3.
  • these conductive strips are in contact by their free ends to ensure the closure of said coil supply circuits and the opening contact is closed .
  • Pellets for example silver, are provided on the opposite faces of the ends of said conductive strips to provide good quality contact.
  • One of the lamellae of each opening contact is a flexible blade that can be elastically deformed in order to move its free end away from the free end of the tongue with which it cooperates in the rest position and open the opening contact.
  • Each flexible blade returns to its rest position as soon as it is no longer requested and the opening contact is closed again.
  • the locking device is such that the second end 23 of the lever 2 must open the opening contact formed by the strips 113 and 115 while the second end 33 of the lever 3 must open the opening contact constituted by the lamellae 112 and 114.
  • the end 23 must therefore move the flexible blade 113 from its rest position while the end 33 must move the flexible blade 112 from its rest position.
  • the conductive lamellae 112, 114; 113, 115 are arranged such that their free ends are in two planes parallel to each other and parallel to the bottom of the housing 1.
  • the flexible blade 113 is disposed above the blade 115 so as to be lifted by the end 23 of the lever 2.
  • the flexible blade 112 is disposed below the blade 114 to be lowered by the end 33 of the lever 3.
  • the second ends 23 and 33 of the levers 2 and 3 are formed by nozzles arranged generally perpendicular to the arms 25, 35 which carry them.
  • the tip 23 carried by the lever 2 extends towards the lid, its face 24 disposed opposite the lid is inclined to approach said lid as it deviates from the arm 25.
  • the tip 33 carried by the lever 3 extends towards the bottom of the housing, its face 34 disposed facing the bottom of the housing is inclined to approach said bottom as it deviates from the arm 35.
  • Each opening contact is arranged in such a way that the second end of the lever which is to open it moves in front of the flexible blade in order to move it away from its rest position during the rotational movement caused by the displacement of the slider to which it is connected.
  • the slats constituting the opening contacts are arranged perpendicularly to the bottom of the housing.
  • the flexible blade 214, 215 of each contact is shaped so as to have a portion 216, 217 disposed on the path of the second end 26, 36 to remove it from its rest position.
  • the flexible strip is further placed facing the side wall of the housing carrying the nearest electrical connections.
  • the second end 26, 36 of the lever is constituted by a tip carried by the arm 25, 35 and extending perpendicularly to said arm, generally in the direction of the axis of rotation 20, 30.
  • the tip 26, 36 has a heel 27, 37 through which it comes into contact with the portion 216, 217 of the flexible blade at the beginning of the rotation of the lever 2, 3 and an end surface 28, 38 by which it acts on the flexible tongue 214, 215 to move it away from its rest position and open the opening contact.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

La présente invention concerne un dispositif de condamnation électrique et mécanique pour contacteurs.The present invention relates to an electrical and mechanical locking device for contactors.

De manière connue en soi, un tel dispositif de condamnation électrique et mécanique, usuellement nommé dispositif de verrouillage, est associé à deux contacteurs afin d'interdire leur fermeture simultanée. A cet effet, lors de la fermeture de l'un des contacteurs, le dispositif de verrouillage empêche mécaniquement la fermeture de l'autre contacteur et ouvre le circuit d'alimentation de la bobine dudit second contacteur. Par un tel dispositif, on assure une double action, mécanique et électrique, de protection de l'installation contre une fermeture simultanée des deux contacteurs.In known manner, such an electrical and mechanical locking device, usually called locking device, is associated with two contactors to prohibit their simultaneous closure. For this purpose, when closing one of the contactors, the locking device mechanically prevents the closing of the other contactor and opens the supply circuit of the coil of said second contactor. By such a device, it provides a double action, mechanical and electrical, protection of the installation against simultaneous closing of the two contactors.

Ce type d'installation à deux contacteurs et dispositif de verrouillage est par exemple utilisé dans des commandes de moteurs électriques destinées à assurer des inversions de marche ou des démarrages étoile-triangle.This type of installation with two contactors and locking device is for example used in electric motor drives to provide reversals or star-delta start.

Un dispositif de verrouillage est par exemple connu par le brevet FR 94 14211 de la demanderesse.A locking device is for example known from the patent FR 94 14211 of the applicant.

Le dispositif décrit dans ce brevet est constitué par un boîtier plat fermé par un couvercle à l'intérieur duquel sont montés deux leviers mobiles en rotation et étant entraîné chacun par une prise de mouvement liée au coulisseau de l'un des contacteurs.The device described in this patent consists of a flat housing closed by a cover inside which are mounted two levers movable in rotation and each being driven by a power take-off linked to the slide of one of the contactors.

Lesdits leviers sont conformés à une première extrémité de manière telle que lorsque l'un d'eux est entraîné en rotation par la fermeture du coulisseau du contacteur auquel il est connecté, sa première extrémité soit amenée dans une position pour laquelle elle maintient la première extrémité de l'autre levier dans la position de repos pour laquelle le contacteur qui lui est associé est ouvert.Said levers are shaped at a first end so that when one of them is rotated by the closing of the contactor slider to which it is connected, its first end is brought into a position for which it maintains the first end. the other lever in the rest position for which the contactor associated with it is open.

La seconde extrémité desdits leviers porte un contact mobile coopérant avec des contacts fixes pour fermer le circuit d'alimentation d'une bobine de contacteur, chaque levier porte le contact mobile coopérant avec le circuit d'alimentation de la bobine du contacteur avec lequel il n'est pas en relation.The second end of said levers carries a movable contact cooperating with fixed contacts to close the supply circuit of a contactor coil, each lever carries the movable contact cooperating with the supply circuit of the coil of the contactor with which it is not in relation.

Par un tel montage, lorsqu'un levier est entraîné en rotation par la fermeture du contacteur auquel il est lié, sa première extrémité vient se placer sous la première extrémité du second levier afin de maintenir ledit second levier dans sa position de repos correspondant à l'ouverture du second contacteur, et, le contact mobile porté par sa seconde extrémité est écarté des contacts fixes du circuit d'alimentation de la bobine du second contacteur afin d'ouvrir ce circuit.By such an assembly, when a lever is rotated by closing the switch to which it is connected, its first end is placed under the first end of the second lever to maintain said second lever in its rest position corresponding to the opening of the second contactor, and the movable contact carried by its second end is spaced from the fixed contacts of the supply circuit of the coil of the second contactor to open this circuit.

L'inconvénient que présentent ces dispositifs de verrouillage tient au fait que dans certaines conditions d'utilisation spécialement rudes, le dispositif peut être soumis à des chocs ou à des vibrations tels que l'un au moins des contacts mobiles portés par les leviers est amené à quitter son logement. La perte d'un contact mobile pose deux problèmes, tout d'abord l'ouverture du circuit d'alimentation de la bobine de l'un des contacteurs et d'autre part un risque de court-circuit intempestif puisque le contact mobile se déplace dans le boîtier de manière totalement aléatoire.The disadvantage of these locking devices is that under certain particularly severe conditions of use, the device can be subjected to shocks or vibrations such that at least one of the movable contacts carried by the levers is brought to leave his home. The loss of a moving contact poses two problems, firstly the opening of the supply circuit of the coil of one of the contactors and secondly a risk of inadvertent short-circuit since the moving contact moves in the case completely randomly.

La présente invention tend à proposer un dispositif de verrouillage de même type que celui décrit dans le brevet antérieur de la Demanderesse qui ne présente pas cet inconvénient.The present invention aims to provide a locking device of the same type as that described in the prior patent of the Applicant which does not have this disadvantage.

A cet effet, l'invention concerne un dispositif de condamnation électrique et mécanique destiné à être associé à deux contacteurs afin d'interdire leur fermeture simultanée, ledit dispositif comportant un boîtier portant deux connexions d'entrée et deux connexions de sortie reliées aux circuits d'alimentation des bobines des contacteurs et dans lequel sont montés deux leviers respectivement mobile en rotation autour d'un axe, chaque circuit d'alimentation de bobine de contacteur disposé entre une connexion d'entrée et une connexion de sortie comportant un contact d'ouverture, chaque levier portant un axe de prise de mouvement par lequel il est lié au mouvement du coulisseau d'un contacteur, présentant d'une part une première extrémité destinée à coopérer mécaniquement avec la première extrémité de l'autre levier dans la position de travail et d'autre part une seconde extrémité, portée par un bras, destinée à assurer l'ouverture du contact d'ouverture du circuit d'alimentation de la bobine du contacteur coopérant avec l'autre levier, caractérisé en ce que chaque contact d'ouverture est constitué par deux lamelles conductrices qui sont en contact par leurs extrémités libres dans leur position normale de repos.To this end, the invention relates to an electrical and mechanical locking device intended to be associated with two contactors to prevent their simultaneous closing, said device comprising a housing carrying two input connections and two output connections connected to the circuits supplying the coils of the contactors and in which are mounted two levers respectively movable in rotation about an axis, each contactor coil supply circuit arranged between an input connection and an output connection comprising an opening contact , each lever carrying a power take-off axis by which it is connected to the movement of the slider of a contactor, having on the one hand a first end intended to mechanically cooperate with the first end of the other lever in the working position and secondly a second end, carried by an arm, intended to ensure the opening of the opening contact of the supply circuit of the coil of the contactor cooperating with the other lever, characterized in that each opening contact is constituted by two conductive strips which are in contact by their free ends in their normal position of rest.

Le dispositif selon l'invention est encore remarquable en ce que :

  • l'une des lamelles de chaque contact d'ouverture est une lamelle souple pouvant être déformée élastiquement afin d'écarter son extrémité libre de l'extrémité libre de la languette avec laquelle elle coopère en position de repos pour ouvrir le contact d'ouverture et revenir dans sa position de repos dès qu'elle n'est plus sollicitée pour fermer le contact d'ouverture,
  • les lamelles conductrices ont leurs extrémités libres dans deux plans parallèles entre eux et parallèles au fond du boîtier,
  • les secondes extrémités des leviers sont constituées par des embouts disposés globalement perpendiculairement aux bras,
  • l'embout de l'un des leviers s'étend en direction du couvercle et sa face disposée en regard du couvercle est inclinée de manière à se rapprocher dudit couvercle à mesure qu'elle s'écarte du bras et l'embout de l'autre levier s'étend en direction du fond du boîtier et sa face disposée en regard du fond du boîtier est inclinée de manière à se rapprocher dudit fond à mesure qu'elle s'écarte du bras,
  • les lamelles conductrices constituant les contacts d'ouverture sont disposées perpendiculairement au fond du boîtier,
  • la lamelle souple de chaque contact présente une portion disposée sur le parcours de la seconde extrémité devant l'écarter de sa position de repos,
  • la seconde extrémité d'un levier est constituée par un embout porté par le bras et s'étendant perpendiculairement audit bras, globalement en direction de l'axe de rotation,
  • l'embout comporte un talon par lequel il entre en contact avec la portion de la lamelle souple au début de la rotation du levier et une surface d'extrémité par laquelle il agit sur ladite languette souple pour l'écarter de sa position de repos et ouvrir le contact d'ouverture.
The device according to the invention is still remarkable in that:
  • one of the lamellae of each opening contact is a flexible blade that can be deformed elastically to move its free end away from the free end of the tongue with which it cooperates in the rest position to open the opening contact and return to its rest position as soon as it is no longer required to close the opening contact,
  • the conductive strips have their free ends in two planes parallel to each other and parallel to the bottom of the housing,
  • the second ends of the levers are constituted by end pieces arranged generally perpendicularly to the arms,
  • the tip of one of the levers extends towards the lid and its face disposed opposite the lid is inclined to approach said lid as it deviates from the arm and the tip of the another lever extends towards the bottom of the housing and its face disposed opposite the bottom of the housing is inclined to approach said bottom as it deviates from the arm,
  • the conductive strips constituting the opening contacts are arranged perpendicularly to the bottom of the housing,
  • the flexible blade of each contact has a portion disposed on the path of the second end to remove it from its rest position,
  • the second end of a lever is constituted by a tip carried by the arm and extending perpendicularly to said arm, generally in the direction of the axis of rotation,
  • the tip comprises a heel by which it comes into contact with the portion of the flexible blade at the beginning of rotation of the lever and an end surface by which it acts on said flexible tongue to move it from its rest position and open the opening contact.

L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective du boîtier d'un dispositif de verrouillage suivant une première forme de réalisation,
  • la figure 2 est une vue de face du boîtier d'un dispositif de verrouillage suivant une seconde forme de réalisation en position de repos,
  • la figure 3 est une vue de face du boîtier de la figure 2 dans une position de travail.
The invention will be better understood from the following description given by way of nonlimiting example with reference to the accompanying drawings in which:
  • FIG. 1 is a perspective view of the housing of a locking device according to a first embodiment,
  • FIG. 2 is a front view of the housing of a locking device according to a second embodiment in the rest position,
  • Figure 3 is a front view of the housing of Figure 2 in a working position.

Pour simplifier la représentation, les dispositifs de verrouillage sont représentés sans le couvercle qui ferme en temps normal la face avant du boîtier 1 et est maintenu en place par la coopération de colonnes avec les puits 17 du boîtier 1.To simplify the representation, the locking devices are represented without the cover which normally closes the front face of the housing 1 and is held in place by the cooperation of columns with the wells 17 of the housing 1.

Le dispositif de verrouillage est destiné à être monté entre deux contacteurs non représentés au dessin. En utilisation, un premier contacteur sera disposé contre le fond du boîtier 1 représenté au dessin et un second contacteur sera disposé contre le couvercle fermant la face avant dudit boîtier 1. Des moyens d'accrochage 6 partiellement visibles au dessin permettent l'accrochage du boîtier du dispositif de verrouillage aux contacteurs entre lesquels il est disposé.The locking device is intended to be mounted between two contactors not shown in the drawing. In use, a first contactor will be arranged against the bottom of the housing 1 shown in the drawing and a second contactor will be arranged against the cover closing the front face of said housing 1. Hanging means 6 partially visible in the drawing allow the attachment of the housing from the locking device to the contactors between which it is arranged.

Dans les formes de réalisation représentées au dessin, le boîtier 1 présente trois connexions sur l'une de ses faces latérales et une connexion sur l'autre face latérale. La face latérale 10 du boîtier 1 disposée sur la droite des dessins comporte deux connexions 12, 14 respectivement d'entrée et de sortie faisant partie du circuit d'alimentation de la bobine du premier contacteur disposé contre le fond du boîtier ainsi que la connexion d'entrée 13 du circuit d'alimentation de la bobine du second contacteur disposé contre le couvercle non représenté du boîtier 1, tandis que la seconde face latérale 11 porte la connexion de sortie 15 du circuit d'alimentation de la bobine du second contacteur. Une autre disposition desdites connexions pourrait bien entendu être mise en oeuvre sans sortir de l'invention.In the embodiments shown in the drawing, the housing 1 has three connections on one of its lateral faces and a connection on the other side face. The lateral face 10 of the housing 1 disposed on the right of the drawings comprises two connections 12, 14 respectively input and output forming part of the supply circuit of the coil of the first contactor disposed against the bottom of the housing and the connection of the input 13 of the supply circuit of the coil of the second contactor disposed against the not shown cover of the housing 1, while the second side face 11 carries the output connection 15 of the supply circuit of the coil of the second contactor. Another arrangement of said connections could of course be implemented without departing from the invention.

De manière connue en soi, le dispositif de verrouillage comporte deux leviers 2 et 3 montés mobiles en rotation respectivement autour des axes 20 et 30 et rappelés vers leur position de repos représentée aux figures 1 et 2 par des ressorts 21, 31. Chaque levier 2, 3 porte un axe de prise de mouvement par lequel il est lié au mouvement du coulisseau du contacteur avec lequel il coopère, seul l'axe 39 du levier 3 est visible au dessin.In a manner known per se, the locking device comprises two levers 2 and 3 rotatably mounted respectively about the axes 20 and 30 and returned to their rest position shown in Figures 1 and 2 by springs 21, 31. Each lever 2 , 3 carries a power take-off axis by which it is connected to the movement of the contactor slider with which it cooperates, only the axis 39 of the lever 3 is visible in the drawing.

Chaque levier 2, 3 présente une première extrémité 22, 32 destinée à coopérer mécaniquement avec la première extrémité de l'autre levier dans la position de travail et une seconde extrémité 23, 33 ; 26, 36 portée par un bras 25, 35 et destinée à assurer l'ouverture du circuit d'alimentation de la bobine du contacteur coopérant avec l'autre levier.Each lever 2, 3 has a first end 22, 32 for mechanically cooperating with the first end of the other lever in the working position and a second end 23, 33; 26, 36 carried by an arm 25, 35 and intended to ensure the opening of the supply circuit of the coil of the contactor cooperating with the other lever.

La figure 3 montre une position de travail du dispositif de verrouillage pour laquelle le levier 2 a été déplacé en rotation autour de son axe 20 du fait de la fermeture du contacteur auquel il est connecté. Comme visible sur cette figure, la première extrémité 22 dudit levier 2 est positionnée contre la première extrémité 32 du levier 3 et constitue une butée qui condamne la rotation dudit levier 3 et rend ainsi impossible le mouvement de fermeture du coulisseau du contacteur connecté à ce levier 3.Figure 3 shows a working position of the locking device for which the lever 2 has been moved in rotation about its axis 20 due to the closing of the contactor to which it is connected. As visible in this figure, the first end 22 of said lever 2 is positioned against the first end 32 of the lever 3 and constitutes a stop which condemns the rotation of said lever 3 and thus makes it impossible to close the contactor slide connected to this lever 3.

Comme visible au dessin, les leviers 2 et 3 se croisent dans leur partie médiane, et le bras 25 portant la seconde extrémité 23 est disposé entre le fond du boîtier et le bras 35 du levier 3, c'est-à-dire sous ledit bras 35.As shown in the drawing, the levers 2 and 3 intersect in their middle part, and the arm 25 carrying the second end 23 is disposed between the bottom of the housing and the arm 35 of the lever 3, that is to say under said arm 35.

Suivant l'invention, chacun des circuits d'alimentation des bobines des contacteurs, s'étendant respectivement entre les connexions 12 et 14 et entre les connexions 13 et 15, comporte un contact d'ouverture constitué par deux lamelles conductrices 112, 114 ; 113, 115 dans la variante de réalisation de la figure 1 et 212, 214 ; 213, 215 dans la variante de réalisation des figures 2 et 3. Dans leur position normale de repos, ces lamelles conductrices sont en contact par leurs extrémités libres pour assurer la fermeture desdits circuits d'alimentation de bobines et le contact d'ouverture est fermé. Des pastilles, par exemple en argent, sont prévues sur les faces en regard des extrémités desdites lamelles conductrices pour fournir un contact de bonne qualité.According to the invention, each of the contactor coil supply circuits, respectively extending between the connections 12 and 14 and between the connections 13 and 15, comprises an opening contact constituted by two conductive strips 112, 114; 113, 115 in the variant of embodiment of Figure 1 and 212, 214; 213, 215 in the alternative embodiment of Figures 2 and 3. In their normal rest position, these conductive strips are in contact by their free ends to ensure the closure of said coil supply circuits and the opening contact is closed . Pellets, for example silver, are provided on the opposite faces of the ends of said conductive strips to provide good quality contact.

L'une des lamelles de chaque contact d'ouverture, les lamelles 112 et 113 de la figure 1 et les lamelles 214 et 215 des figures 2 et 3, est une lamelle souple pouvant être déformée élastiquement afin d'écarter son extrémité libre de l'extrémité libre de la languette avec laquelle elle coopère en position de repos et d'ouvrir le contact d'ouverture.One of the lamellae of each opening contact, the lamellae 112 and 113 of FIG. 1 and the lamellae 214 and 215 of FIGS. 2 and 3, is a flexible blade that can be elastically deformed in order to move its free end away from the free end of the tongue with which it cooperates in the rest position and open the opening contact.

Chaque lamelle souple revient dans sa position de repos dès qu'elle n'est plus sollicitée et le contact d'ouverture est à nouveau fermé.Each flexible blade returns to its rest position as soon as it is no longer requested and the opening contact is closed again.

Pour remplir sa fonction, le dispositif de verrouillage est tel que la seconde extrémité 23 du levier 2 doit ouvrir le contact d'ouverture constitué par les lamelles 113 et 115 tandis que la seconde extrémité 33 du levier 3 doit ouvrir le contact d'ouverture constitué par les lamelles 112 et 114. L'extrémité 23 doit donc écarter la lamelle souple 113 de sa position de repos tandis que l'extrémité 33 doit écarter la lamelle souple 112 de sa position de repos.To fulfill its function, the locking device is such that the second end 23 of the lever 2 must open the opening contact formed by the strips 113 and 115 while the second end 33 of the lever 3 must open the opening contact constituted by the lamellae 112 and 114. The end 23 must therefore move the flexible blade 113 from its rest position while the end 33 must move the flexible blade 112 from its rest position.

Dans la forme de réalisation représentée à la figure 1, les lamelles conductrices 112, 114 ; 113, 115 sont disposées de telle sorte que leurs extrémités libres soient dans deux plans parallèles entre eux et parallèles au fond du boîtier 1.In the embodiment shown in Figure 1, the conductive lamellae 112, 114; 113, 115 are arranged such that their free ends are in two planes parallel to each other and parallel to the bottom of the housing 1.

La lamelle souple 113 est disposée au-dessus de la lamelle 115 afin d'être soulevée par l'extrémité 23 du levier 2.The flexible blade 113 is disposed above the blade 115 so as to be lifted by the end 23 of the lever 2.

La lamelle souple 112 est disposée en-dessous de la lamelle 114 afin d'être abaissée par l'extrémité 33 du levier 3.The flexible blade 112 is disposed below the blade 114 to be lowered by the end 33 of the lever 3.

Les secondes extrémités 23 et 33 des leviers 2 et 3 sont constituées par des embouts disposés globalement perpendiculairement aux bras 25, 35 qui les portent. L'embout 23 porté par le levier 2 s'étend en direction du couvercle, sa face 24 disposée en regard du couvercle est inclinée de manière à se rapprocher dudit couvercle à mesure qu'elle s'écarte du bras 25. L'embout 33 porté par le levier 3 s'étend en direction du fond du boîtier, sa face 34 disposée en regard du fond du boîtier est inclinée de manière à se rapprocher dudit fond à mesure qu'elle s'écarte du bras 35.The second ends 23 and 33 of the levers 2 and 3 are formed by nozzles arranged generally perpendicular to the arms 25, 35 which carry them. The tip 23 carried by the lever 2 extends towards the lid, its face 24 disposed opposite the lid is inclined to approach said lid as it deviates from the arm 25. The tip 33 carried by the lever 3 extends towards the bottom of the housing, its face 34 disposed facing the bottom of the housing is inclined to approach said bottom as it deviates from the arm 35.

Chaque contact d'ouverture est disposé de manière telle que la seconde extrémité du levier qui doit l'ouvrir se déplace devant la lamelle souple afin d'écarter celle-ci de sa position de repos au cours du mouvement de rotation engendré par le déplacement du coulisseau auquel il est connecté.Each opening contact is arranged in such a way that the second end of the lever which is to open it moves in front of the flexible blade in order to move it away from its rest position during the rotational movement caused by the displacement of the slider to which it is connected.

Dans la seconde forme de réalisation représentée aux figures 2 et 3, les lamelles constituant les contacts d'ouverture sont disposées perpendiculairement au fond du boîtier.In the second embodiment shown in Figures 2 and 3, the slats constituting the opening contacts are arranged perpendicularly to the bottom of the housing.

La lamelle souple 214, 215 de chaque contact est conformée de manière à présenter une portion 216, 217 disposée sur le parcours de la seconde extrémité 26, 36 devant l'écarter de sa position de repos.The flexible blade 214, 215 of each contact is shaped so as to have a portion 216, 217 disposed on the path of the second end 26, 36 to remove it from its rest position.

La lamelle souple est de plus placée en regard de la paroi latérale du boîtier portant les connexions électriques la plus proche.The flexible strip is further placed facing the side wall of the housing carrying the nearest electrical connections.

La seconde extrémité 26, 36 du levier est constituée par un embout porté par le bras 25, 35 et s'étendant perpendiculairement audit bras, globalement en direction de l'axe du rotation 20, 30.The second end 26, 36 of the lever is constituted by a tip carried by the arm 25, 35 and extending perpendicularly to said arm, generally in the direction of the axis of rotation 20, 30.

L'embout 26, 36 comporte un talon 27, 37 par lequel il entre en contact avec la portion 216, 217 de la lamelle souple au début de la rotation du levier 2, 3 et une surface d'extrémité 28, 38 par laquelle il agit sur la languette souple 214, 215 pour l'écarter de sa position de repos et ouvrir le contact d'ouverture.The tip 26, 36 has a heel 27, 37 through which it comes into contact with the portion 216, 217 of the flexible blade at the beginning of the rotation of the lever 2, 3 and an end surface 28, 38 by which it acts on the flexible tongue 214, 215 to move it away from its rest position and open the opening contact.

Claims (9)

  1. An electrical and mechanical interlock device intended to be associated with two contactors in order to prevent the simultaneous closure thereof, said device comprising a housing (1) bearing two input terminals (12, 13) and two output terminals (14, 15) connected to the feed circuits for the coils of the contactors and in which are mounted two levers (2, 3) which are mobile in rotation about an axis (20, 30) respectively, each feed circuit for the contactor coil arranged between an input terminal and an output terminal comprising a break contact, each lever (2, 3) bearing a movement transfer spindle by which it is linked to the movement of the slider of a contactor, having on one hand a first end (22, 32) intended to cooperate mechanically with the first end of the other lever in the operating position and on the other hand a second end (23, 26; 33, 36), borne by an arm (25, 35), intended to open the break contact of the feed circuit for the coil of the contactor cooperating with the other lever, characterised in that each break contact is formed of two conductive strips (112, 114; 113, 115; 212, 214; 213, 215) which are in contact by means of their free ends in their normal position of rest.
  2. A device according to Claim 1, characterised in that one (112, 113, 214, 215) of the strips of each break contact is a flexible strip which can be elastically deformed so as to move its free end away from the free end of the tongue with which it cooperates in the position of rest to open the break contact and return into its position of rest once it is no longer acted upon to close the break contact.
  3. A device according to Claim 1 or Claim 2, characterised in that the conductive strips (112, 114; 113, 115) have their free ends in two planes which are parallel to each other and parallel to the bottom of the housing (1).
  4. A device according to Claim 3, characterised in that the second ends (23, 33) of the levers (2, 3) are formed by end pieces arranged overall perpendicular to the arms (25, 35).
  5. A device according to Claim 4, characterised in that the end piece (23) of one of the levers (2) extends towards the cover and its face (24) arranged facing the cover is inclined so as to move towards said cover as it moves away from the arm (25), and the end piece (33) of the other lever (3) extends towards the bottom of the housing and its face (34) arranged facing the bottom of the housing is inclined so as to move towards said bottom as it moves away from the arm (35).
  6. A device according to Claim 1 or Claim 2, characterised in that the conductive strips (212, 214; 213, 215) forming the break contacts are arranged perpendicular to the bottom of the housing.
  7. A device according to Claim 6, characterised in that the flexible strip (214, 215) of each contact has a portion (216, 217) arranged on the path of the second end (26, 36) of the lever which has to move it away from its position of rest.
  8. A device according to Claim 6 or Claim 7, characterised in that the second end (26, 36) of a lever is formed by an end piece borne by the arm (25, 35) and extending perpendicular to said arm, overall in the direction of the rotation spindle (20, 30).
  9. A device according to Claim 8, characterised in that the end piece (26, 36) comprises a heel (27, 37) by which it comes into contact with the portion (216, 217) of the flexible strip (214, 215) at the start of the rotation of the lever (2, 3) and an end surface (28, 38) by which it acts on said flexible tongue (214, 215) to move it from its position of rest and open the break contact.
EP20010402324 2000-10-11 2001-09-10 Electrical and mechanical locking device to be coupled to two contactors in order to prevent simultaneous closure Expired - Lifetime EP1197982B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0012977 2000-10-11
FR0012977A FR2815171B1 (en) 2000-10-11 2000-10-11 ELECTRICAL AND MECHANICAL LOCKING DEVICE FOR BEING ASSOCIATED WITH TWO CONTACTORS TO PREVENT THEIR SIMULTANEOUS CLOSING

Publications (2)

Publication Number Publication Date
EP1197982A1 EP1197982A1 (en) 2002-04-17
EP1197982B1 true EP1197982B1 (en) 2007-02-14

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Application Number Title Priority Date Filing Date
EP20010402324 Expired - Lifetime EP1197982B1 (en) 2000-10-11 2001-09-10 Electrical and mechanical locking device to be coupled to two contactors in order to prevent simultaneous closure

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EP (1) EP1197982B1 (en)
DE (1) DE60126548T2 (en)
FR (1) FR2815171B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200415843Y1 (en) * 2006-02-16 2006-05-08 엘에스산전 주식회사 Auxiliary contact unit of magnatic contactor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661548B1 (en) * 1990-04-30 1992-07-17 Telemecanique LOCKING INVERTER CONTACTOR APPARATUS.
US5164694A (en) * 1991-04-25 1992-11-17 Westinghouse Electric Corp. Mechanical interlock for a pair of electromagnetic switches
FR2727566A1 (en) * 1994-11-28 1996-05-31 Abb Control Sa ELECTRICAL AND MECHANICAL CONDEMNATION DEVICE FOR CONTACTORS

Also Published As

Publication number Publication date
FR2815171A1 (en) 2002-04-12
DE60126548T2 (en) 2007-10-31
EP1197982A1 (en) 2002-04-17
FR2815171B1 (en) 2003-02-07
DE60126548D1 (en) 2007-03-29

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