EP0543740B1 - Electromagnetic actuator, incorporated in a remote control unit - Google Patents

Electromagnetic actuator, incorporated in a remote control unit Download PDF

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Publication number
EP0543740B1
EP0543740B1 EP92420400A EP92420400A EP0543740B1 EP 0543740 B1 EP0543740 B1 EP 0543740B1 EP 92420400 A EP92420400 A EP 92420400A EP 92420400 A EP92420400 A EP 92420400A EP 0543740 B1 EP0543740 B1 EP 0543740B1
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EP
European Patent Office
Prior art keywords
blade
rotor
actuating device
coil
spring
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
EP92420400A
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German (de)
French (fr)
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EP0543740A1 (en
Inventor
Olivier Dardare
Daniel Dufrène
Alain Frolla
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Schneider Electric SE
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Schneider Electric SE
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Publication of EP0543740A1 publication Critical patent/EP0543740A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
    • H01H75/02—Details
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H71/70—Power reset mechanisms actuated by electric motor
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H2071/665—Power reset mechanisms the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position

Definitions

  • the invention relates to an electromagnetic actuation device, in particular incorporated in a remote control unit, comprising an excitation coil associated with a magnetic circuit.
  • a first type of electromagnetic actuator used in the remote control blocks for closing and / or opening circuit breakers is formed by at least one electromagnet, described by way of example in documents FR-A-2,559,616 and 2,567,317.
  • the mechanical closing energy supplied by an electromagnet with a plunger core during the excitation of the coil is relatively limited, for a predetermined bulk, and is not suitable for driving mechanisms of abrupt closing circuit breakers, associated with control auxiliaries.
  • the remote-controlled opening is operated by means of a small opening electromagnet which sends a trip order to the circuit breaker. The opening energy is thus generated by the accumulator spring of the main mechanism of the circuit breaker, and the opening electromagnet of the remote control unit behaves like a simple emission coil or other tripping auxiliary.
  • a second type of electromagnetic actuator for a remote control unit uses a rotary electric motor associated with a speed reducer mechanism to operate the two closing and opening operations of the circuit breaker.
  • the motor is generally controlled by an electrical circuit with three wires and two on-off control buttons, and limit switch contacts cause the excitation of the motor to be interrupted after each maneuver.
  • Such a device is very complicated and requires significant space.
  • the object of the invention is to simplify the operation of an electromagnetic actuation device for a block remote control with opening energy accumulation.
  • the actuating device In the separated position of the pallet, the actuating device has a motor operating mode, since the majority of the magnetic flux following the excitation of the coil, passes through the rotor.
  • the actuating device behaves like an electromagnet. The majority of the magnetic flux then crosses the pallet, causing the motor to be put out of service.
  • the magnetic circuit and the coil constitute a common assembly for the two operating modes in motor and in electromagnet.
  • the reluctance of the magnetic circuit is variable depending on the operating mode, and a low energy is sufficient to keep the pallet in the attracted position. To release the pallet, simply interrupt the excitation of the coil.
  • the rotor shaft is mechanically coupled to a speed reducer associated with a mechanism for cocking an energy accumulator spring, and for driving a lever.
  • the unlocking of the pallet lock takes place automatically at the end of arming the accumulator spring by the action of a first control link associated with the mechanism.
  • the pallet is connected on the other hand to a hooking device by means of a second control link to maintain the accumulator spring in the armed state when the pallet is in the attracted position.
  • the expansion of the accumulator spring occurs after the excitation of the coil has been interrupted, causing the pallet to move from the attracted position to the withdrawn position.
  • the handle of the remote control unit is mechanically coupled to the manual operating member for closing and opening an adjacent circuit breaker unit, to ensure the closing of the contacts of the circuit breaker unit during of the arming of the accumulator spring resulting from the rotational movement of the rotor in the position away from the pallet, and the opening of the contacts by the action of expansion of the spring resulting from the interruption of the excitation of the coil.
  • the mechanism comprises a mechanical transmission connection coupled to the lever, and a mechanical arming connection cooperating with the attachment device and with one of the strands of the accumulator spring.
  • Figures 1 and 2 are schematic views of the actuating device according to the invention, operating respectively as a motor and as an electromagnet.
  • Figure 3 shows a side view of Figure 2.
  • FIG. 4 represents an assembly of a circuit breaker block and a remote control block.
  • Figure 5 is a schematic view of the remote control unit, the pallet of the actuating device being shown in the attracted position.
  • an electromagnetic actuation device 10 comprises a fixed U-shaped magnetic circuit 12 having a first pair of pole pieces 14,16 between which a rotor 18 is disposed, and a second pair of pole pieces 20,22 cooperating with a pallet 24 made of ferromagnetic material, which is pivotally mounted on an axis 26.
  • a return spring 28 biases the pallet 24 towards a separated position (FIG. 1), and a lock 30 is capable of holding the pallet 24 locked in the open position.
  • the rotary shaft 32 of the rotor 18 extends parallel to the axis 26 of articulation of the pallet 24, and a first radial gap 34 (FIG. 2) is formed between the rotor 18 and the two pole pieces 14, 16.
  • a coil 36 or excitation winding is mounted on the magnetic circuit 12 to generate an inductive flux passing through the radial air gap 34, and a magnetic attraction flow in a second air gap 38 formed between the pole face 20 and the pallet 24.
  • the actuating device 10 is advantageously used in a remote control unit 40 intended to be attached to a circuit breaker unit 42 (FIG. 4) to ensure the automatic opening and closing of the contacts of the circuit breaker unit.
  • a speed reducer 46 driven by the shaft 32 of the rotor 18.
  • the output of the speed reducer 46 is coupled to a cam mechanism 48, having a mechanical transmission connection 50 with a drive lever 52, and a mechanical arming connection 54 with a spring 56 energy accumulator.
  • the lever 52 projects from the remote control unit 40, and is permanently coupled to the manual operating member of the circuit breaker unit 42. Between the pallet 24 and the mechanism 48 there is also a first control link 58 of the associated lock 30 to the pallet 24, and a second control link 60 of a hooking device 62 cooperating with the mechanical cocking link 54 to keep the spring 56 armed when the rotor 18 stops.
  • One of the strands of the spring 56 energy accumulator is driven in rotation by a stud of the mechanical arming connection 54, and the other strand bears on a stop 66.
  • the pole piece 20 of the magnetic circuit 12 is equipped with a ring or coil 64 ofquipr to ensure the phase shift of the second magnetic flux relative to the excitation current of the coil 36, thereby avoiding any vibration during the attraction of the pallet 24 after unlocking the lock 30.
  • the operation of the actuating device 10 of the remote control unit 40 is as follows:
  • the latch 30 ensures positive locking of the pallet 24 in the separated position. Almost all of the magnetic flux generated by the excitation of the coil 36 passes through the pole pieces 14, 16, the radial air gap 34 and the rotor 18, and causes the rotor 18 to rotate.
  • the attachment device 62 is in the inactive position, and authorizes the arming of the spring 56 via the reduction gear 46 and the mechanical connection 54 of the mechanism 48. The latter simultaneously transmits a closing operation to the lever 52 via the mechanical transmission link 50. This results in closing of the contacts of the circuit breaker unit 42 during the arming phase of the spring 56.
  • the actuation device 10 behaves like a single-phase asynchronous or synchronous rotary motor. The energy stored in the spring 56 will be used later for the opening of the contacts of the circuit breaker block 42.
  • the first control link 58 causes the latch 30 to be withdrawn so as to release the pallet 24.
  • the coil 36 remains energized, and the flux of magnetic attraction in the second air gap 38 is sufficient to attract the pallet 24 against the pole face 20 against the return force of the spring 28 ( Figure 2).
  • the reluctance of the magnetic circuit through the pallet 24 is less than that imposed by the first radial gap 34 of the rotor 18.
  • the majority of the magnetic flux is then looped by the pallet 24 causing the rotor 18 to stop.
  • attracted position of the pallet 24 (FIG. 2) is stable, as long as the excitation of the coil 36 is maintained.
  • the second control link 60 brings the latching device 62 in the active position, so as to lock the accumulator spring 56 in the armed position, as soon as the rotor 18 stops. Low energy is necessary to keep the pallet 24 in the attracted position .
  • the accumulator spring 56 In the open position of the circuit breaker unit 42, the accumulator spring 56 is disarmed, and the latch 30 keeps the pallet 24 in the separated position. The resetting of the spring 56 takes place when the circuit breaker block 42 is closed again by energizing the coil 36 of the remote control block 40.
  • the operating mode of the actuator block 10 stops when the circuit breaker block 42 is closed. From the end of the arming stroke of the accumulator spring 56, the actuation block 10 plays the role of an operating electromagnet with the same coil 36 as that used for the engine operating mode.

Landscapes

  • Breakers (AREA)
  • Electromagnets (AREA)
  • Lock And Its Accessories (AREA)

Description

L'invention est relative à un dispositif d'actionnement électromagnétique, notamment incorporé dans un bloc de télécommande, comprenant une bobine d'excitation associée à un circuit magnétique.The invention relates to an electromagnetic actuation device, in particular incorporated in a remote control unit, comprising an excitation coil associated with a magnetic circuit.

Un premier type d'actionneur électromagnétique utilisé dans les blocs de télécommande de fermeture et/ou d'ouverture de disjoncteurs, est formé par au moins un électro-aimant, décrit à titre d'exemple dans les documents FR-A-2.559.616 et 2.567.317. L'énergie mécanique de fermeture fournie par un électro-aimant à noyau plongeur lors de l'excitation de la bobine est relativement limitée, pour un encombrement prédéterminé, et n'est pas adaptée pour entraîner des mécanismes de disjoncteurs à fermeture brusque, associés à des auxiliaires de commande. De plus, l'ouverture télécommandée est opérée au moyen d'un petit électro-aimant d'ouverture qui envoie un ordre de déclenchement au disjoncteur. L'énergie d'ouverture est ainsi générée par le ressort accumulateur du mécanisme principal du disjoncteur, et l'électro-aimant d'ouverture du bloc de télécommande se comporte comme une simple bobine à émission ou autre auxiliaire de déclenchement.A first type of electromagnetic actuator used in the remote control blocks for closing and / or opening circuit breakers, is formed by at least one electromagnet, described by way of example in documents FR-A-2,559,616 and 2,567,317. The mechanical closing energy supplied by an electromagnet with a plunger core during the excitation of the coil is relatively limited, for a predetermined bulk, and is not suitable for driving mechanisms of abrupt closing circuit breakers, associated with control auxiliaries. In addition, the remote-controlled opening is operated by means of a small opening electromagnet which sends a trip order to the circuit breaker. The opening energy is thus generated by the accumulator spring of the main mechanism of the circuit breaker, and the opening electromagnet of the remote control unit behaves like a simple emission coil or other tripping auxiliary.

Un deuxième type d'actionneur électromagnétique pour bloc de télécommande utilise un moteur électrique rotatif associé à un mécanisme à réducteur de vitesse pour opérer les deux manoeuvres de fermeture et d'ouverture du disjoncteur. Le moteur est généralement piloté par un circuit électrique à trois fils et à deux boutons de commande marche-arrêt, et des contacts de fin de course provoquent l'interruption de l'excitation du moteur après chaque manoeuvre. Un tel dispositif est très compliqué et nécessite un encombrement important.A second type of electromagnetic actuator for a remote control unit uses a rotary electric motor associated with a speed reducer mechanism to operate the two closing and opening operations of the circuit breaker. The motor is generally controlled by an electrical circuit with three wires and two on-off control buttons, and limit switch contacts cause the excitation of the motor to be interrupted after each maneuver. Such a device is very complicated and requires significant space.

L'objet de l'invention consiste à simplifier le fonctionnement d'un dispositif d'actionnement électromagnétique pour un bloc de télécommande à accumulation d'énergie d'ouverture.The object of the invention is to simplify the operation of an electromagnetic actuation device for a block remote control with opening energy accumulation.

Le dispositif d'actionnement électromagnétique selon l'invention est caractérisé en ce que:

  • le circuit magnétique comporte une première série de pièces polaires délimitant un premier entrefer pour l'entraînement en rotation d'un rotor équipé d'un arbre de commande, et une deuxième série de pièces polaires coopérant avec une palette mobile en matériau ferromagnétique, susceptible d'occuper une position écartée avec formation d'un deuxième entrefer, et une position attirée,
  • un ressort de rappel provoquant le déplacement de la palette de la position attirée vers la position écartée lors de l'interruption de l'excitation de la bobine,
  • et un verrou destiné à assurer le verrouillage de la palette en position écartée pendant la phase d'alimentation de la bobine, et de rotation du rotor, la libération de la palette par déverrouillage du verrou provoquant ensuite l'attraction électromagnétique de la palette contre les faces polaires de la deuxième série, et l'arrêt automatique du rotor.
The electromagnetic actuation device according to the invention is characterized in that:
  • the magnetic circuit comprises a first series of pole pieces delimiting a first air gap for the rotary drive of a rotor equipped with a control shaft, and a second series of pole pieces cooperating with a movable pallet made of ferromagnetic material, capable of '' occupy a separate position with the formation of a second air gap, and an attracted position,
  • a return spring causing the pallet to move from the attracted position to the separated position when the excitation of the coil is interrupted,
  • and a lock intended to ensure the locking of the pallet in the separated position during the phase of feeding the coil, and of rotation of the rotor, the release of the pallet by unlocking the lock then causing the electromagnetic attraction of the pallet against polar faces of the second series, and the automatic stopping of the rotor.

En position écartée de la palette, le dispositif d'actionnement a un mode de fonctionnement en moteur, étant donné que la majorité du flux magnétique suite à l'excitation de la bobine, traverse le rotor.In the separated position of the pallet, the actuating device has a motor operating mode, since the majority of the magnetic flux following the excitation of the coil, passes through the rotor.

En position attirée de la palette après déverrouillage du verrou, le dispositif d'actionnement se comporte comme un électro-aimant.La majorité du flux magnétique traverse alors la palette, provoquant la mise hors service du moteur.In the attracted position of the pallet after unlocking the lock, the actuating device behaves like an electromagnet. The majority of the magnetic flux then crosses the pallet, causing the motor to be put out of service.

Le circuit magnétique et la bobine constituent un ensemble commun pour les deux modes de fonctionnement en moteur et en électro-aimant. La réluctance du circuit magnétique est variable selon le mode de fonctionnement, et une faible énergie est suffisante pour maintenir la palette en position attirée. Pour relâcher la palette, il suffit d'interrompre l'excitation de la bobine.The magnetic circuit and the coil constitute a common assembly for the two operating modes in motor and in electromagnet. The reluctance of the magnetic circuit is variable depending on the operating mode, and a low energy is sufficient to keep the pallet in the attracted position. To release the pallet, simply interrupt the excitation of the coil.

Selon une caractéristique préférentielle de l'invention, l'arbre du rotor est accouplé mécaniquement à un réducteur de vitesse associé à un mécanisme de commande d'armement d'un ressort accumultateur d'énergie, et d'entraînement d'une manette.According to a preferred characteristic of the invention, the rotor shaft is mechanically coupled to a speed reducer associated with a mechanism for cocking an energy accumulator spring, and for driving a lever.

Le déverrouillage du verrou de la palette s'opère automatiquement en fin d'armement du ressort accumulateur par l'action d'une première liaison de commande associée au mécanisme. La palette est reliée d'autre part à un dispositif d'accrochage au moyen d'une deuxième liaison de commande pour maintenir le ressort accumulateur dans l'état armé lorsque la palette se trouve dans la position attirée. La détente du ressort accumulateur intervient après interruption de l'excitation de la bobine, faisant passer la palette de la position attirée vers la position écartée.The unlocking of the pallet lock takes place automatically at the end of arming the accumulator spring by the action of a first control link associated with the mechanism. The pallet is connected on the other hand to a hooking device by means of a second control link to maintain the accumulator spring in the armed state when the pallet is in the attracted position. The expansion of the accumulator spring occurs after the excitation of the coil has been interrupted, causing the pallet to move from the attracted position to the withdrawn position.

Selon une autre caractéristique préférentielle de l'invention, la manette du bloc de télécommande est accouplée mécaniquement à l'organe de manoeuvre manuel de fermeture et d'ouverture d'un bloc disjoncteur accolé, pour assurer la fermeture des contacts du bloc disjoncteur au cours de l'armement du ressort accumulateur résultant du mouvement de rotation du rotor en position écartée de la palette, et l'ouverture des contacts par l'action de détente du ressort résultant de l'interruption de l'excitation de la bobine.According to another preferred characteristic of the invention, the handle of the remote control unit is mechanically coupled to the manual operating member for closing and opening an adjacent circuit breaker unit, to ensure the closing of the contacts of the circuit breaker unit during of the arming of the accumulator spring resulting from the rotational movement of the rotor in the position away from the pallet, and the opening of the contacts by the action of expansion of the spring resulting from the interruption of the excitation of the coil.

Le mécanisme comporte une liaison mécanique de transmission accouplée à la manette, et une liaison mécanique d'armement coopérant avec le dispositif d'accrochage et avec l'un des brins du ressort accumulateur.The mechanism comprises a mechanical transmission connection coupled to the lever, and a mechanical arming connection cooperating with the attachment device and with one of the strands of the accumulator spring.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple, et représenté aux dessins annexés, dans lesquels:Other advantages and features will emerge more clearly from the description which follows of an embodiment of the invention, given by way of example, and represented in the appended drawings, in which:

Les figures 1 et 2 sont des vues schématiques du dispositif d'actionnement selon l'invention, fonctionnant respectivement en moteur, et en électro-aimant.Figures 1 and 2 are schematic views of the actuating device according to the invention, operating respectively as a motor and as an electromagnet.

La figure 3 montre une vue de profil de la figure 2.Figure 3 shows a side view of Figure 2.

La figure 4 représente un assemblage d'un bloc disjoncteur, et d'un bloc de télécommande.FIG. 4 represents an assembly of a circuit breaker block and a remote control block.

La figure 5 est une vue schématique du bloc de télécommande, la palette du dispositif d'actionnement étant représentée en position attirée.Figure 5 is a schematic view of the remote control unit, the pallet of the actuating device being shown in the attracted position.

En référence aux figures 1 à 5, un dispositif d'actionnement 10 électromagnétique comporte un circuit magnétique 12 fixe en forme de U ayant une première paire de pièces polaires 14,16 entre lesquelles est disposé un rotor 18, et une deuxième paire de pièces polaires 20,22 coopérant avec une palette 24 en matériau ferromagnétique, laquelle est montée à pivotement sur un axe 26. Un ressort de rappel 28 sollicite la palette 24 vers une position écartée (figure 1), et un verrou 30 est susceptible de maintenir la palette 24 verrouillée en position écartée.With reference to FIGS. 1 to 5, an electromagnetic actuation device 10 comprises a fixed U-shaped magnetic circuit 12 having a first pair of pole pieces 14,16 between which a rotor 18 is disposed, and a second pair of pole pieces 20,22 cooperating with a pallet 24 made of ferromagnetic material, which is pivotally mounted on an axis 26. A return spring 28 biases the pallet 24 towards a separated position (FIG. 1), and a lock 30 is capable of holding the pallet 24 locked in the open position.

L'arbre 32 rotatif du rotor 18 s'étend parallèlement à l'axe 26 d'articulation de la palette 24, et un premier entrefer 34 radial (figure 2) est ménagé entre le rotor 18 et les deux pièces polaires 14,16. Une bobine 36 ou enroulement d'excitation est monté sur le circuit magnétique 12 pour engendrer un flux inducteur traversant l'entrefer 34 radial, et un flux d'attraction magnétique dans un deuxième entrefer 38 ménagé entre la face polaire 20 et la palette 24.The rotary shaft 32 of the rotor 18 extends parallel to the axis 26 of articulation of the pallet 24, and a first radial gap 34 (FIG. 2) is formed between the rotor 18 and the two pole pieces 14, 16. A coil 36 or excitation winding is mounted on the magnetic circuit 12 to generate an inductive flux passing through the radial air gap 34, and a magnetic attraction flow in a second air gap 38 formed between the pole face 20 and the pallet 24.

Le dispositif d'actionnement 10 est avantageusement utilisé dans un bloc de télécommande 40 destiné à être accolé à un bloc disjoncteur 42 (figure 4) pour assurer l'ouverture et la fermeture automatique des contacts du bloc disjoncteur. A l'intérieur du boîtier 44 isolant du bloc de télécommande 40 (figure 5) se trouve un réducteur de vitesse 46 entraîné par l'arbre 32 du rotor 18. La sortie du réducteur de vitesse 46 est accouplée à un mécanisme 48 à came, ayant une liaison mécanique de transmission 50 avec une manette 52 d'entraînement, et une liaison mécanique d'armement 54 avec un ressort 56 accumulateur d'énergie.The actuating device 10 is advantageously used in a remote control unit 40 intended to be attached to a circuit breaker unit 42 (FIG. 4) to ensure the automatic opening and closing of the contacts of the circuit breaker unit. Inside the insulating housing 44 of the remote control unit 40 (FIG. 5) is a speed reducer 46 driven by the shaft 32 of the rotor 18. The output of the speed reducer 46 is coupled to a cam mechanism 48, having a mechanical transmission connection 50 with a drive lever 52, and a mechanical arming connection 54 with a spring 56 energy accumulator.

La manette 52 fait saillie du bloc de télécommande 40, et est accouplée en permanence avec l'organe de manoeuvre manuel du bloc disjoncteur 42. Entre la palette 24 et le mécanisme 48 se trouvent de plus une première liaison de commande 58 du verrou 30 associé à la palette 24, et une deuxième liaison de commande 60 d'un dispositif d'accrochage 62 coopérant avec la liaison mécanique d'armement 54 pour maintenir le ressort 56 armé lors de l'arrêt du rotor 18. L'un des brins du ressort 56 accumulateur d'énergie est entraîné en rotation par un téton de la liaison mécanique d'armement 54, et l'autre brin prend appui sur une butée 66.The lever 52 projects from the remote control unit 40, and is permanently coupled to the manual operating member of the circuit breaker unit 42. Between the pallet 24 and the mechanism 48 there is also a first control link 58 of the associated lock 30 to the pallet 24, and a second control link 60 of a hooking device 62 cooperating with the mechanical cocking link 54 to keep the spring 56 armed when the rotor 18 stops. One of the strands of the spring 56 energy accumulator is driven in rotation by a stud of the mechanical arming connection 54, and the other strand bears on a stop 66.

La pièce polaire 20 du circuit magnétique 12 est équipée d'une bague ou spire 64 de Frager pour assurer le déphasage du deuxième flux magnétique par rapport au courant d'excitation de la bobine 36, évitant de ce fait toute vibration lors de l'attraction de la palette 24 après déverrouillage du verrou 30.The pole piece 20 of the magnetic circuit 12 is equipped with a ring or coil 64 of Frager to ensure the phase shift of the second magnetic flux relative to the excitation current of the coil 36, thereby avoiding any vibration during the attraction of the pallet 24 after unlocking the lock 30.

Le fonctionnement du dispositif d'actionnement 10 du bloc de télécommande 40 est le suivant:The operation of the actuating device 10 of the remote control unit 40 is as follows:

Sur la figure 1, le verrou 30 assure le verrouillage positif de la palette 24 en position écartée. La quasi-totalité du flux magnétique engendré par l'excitation de la bobine 36 traverse les pièces polaires 14,16, l'entrefer radial 34 et le rotor 18, et provoque la rotation du rotor 18. Le dispositif d'accrochage 62 se trouve en position inactive, et autorise l'armement du ressort 56 par l'intermédiaire du réducteur 46 et de la liaison mécanique 54 du mécanisme 48. Ce dernier transmet simultanément une manoeuvre de fermeture à la manette 52 par l'intermédiaire de la liaison mécanique de transmission 50. Il en résulte une fermeture des contacts du bloc disjoncteur 42 pendant la phase d'armement du ressort 56. Durant cette phase de fonctionnement, le dispositif d'actionnement 10 se comporte comme un moteur rotatif monophasé asynchrone ou synchrone. L'énergie stockée dans le ressort 56 sera utilisée ultérieurement pour l'ouverture des contacts du bloc disjoncteur 42.In Figure 1, the latch 30 ensures positive locking of the pallet 24 in the separated position. Almost all of the magnetic flux generated by the excitation of the coil 36 passes through the pole pieces 14, 16, the radial air gap 34 and the rotor 18, and causes the rotor 18 to rotate. The attachment device 62 is in the inactive position, and authorizes the arming of the spring 56 via the reduction gear 46 and the mechanical connection 54 of the mechanism 48. The latter simultaneously transmits a closing operation to the lever 52 via the mechanical transmission link 50. This results in closing of the contacts of the circuit breaker unit 42 during the arming phase of the spring 56. During this operating phase, the actuation device 10 behaves like a single-phase asynchronous or synchronous rotary motor. The energy stored in the spring 56 will be used later for the opening of the contacts of the circuit breaker block 42.

En fin de course d'armement du ressort 56, la première liaison de commande 58 provoque le retrait du verrou 30 de manière à libérer la palette 24. La bobine 36 reste alimentée, et le flux d'attraction magnétique dans le deuxième entrefer 38 est suffisant pour attirer la palette 24 contre la face polaire 20 à l'encontre de la force de rappel du ressort 28 (figure 2). A cet instant, la réluctance du circuit magnétique à travers la palette 24 est inférieure à celle imposée par le premier entrefer 34 radial du rotor 18. La majorité du flux magnétique se boucle alors par la palette 24 provoquant l'arrêt du rotor 18. La position attirée de la palette 24 (figure 2) est stable, aussi longtemps que l'excitation de la bobine 36 est maintenue. La deuxième liaison de commande 60 amène le dispositif d'accrochage 62 en position active, de manière à verrouiller le ressort 56 accumulateur en position armée, dès l'arrêt du rotor 18. Une faible énergie est nécessaire pour maintenir la palette 24 en position attirée.At the end of the arming stroke of the spring 56, the first control link 58 causes the latch 30 to be withdrawn so as to release the pallet 24. The coil 36 remains energized, and the flux of magnetic attraction in the second air gap 38 is sufficient to attract the pallet 24 against the pole face 20 against the return force of the spring 28 (Figure 2). At this instant, the reluctance of the magnetic circuit through the pallet 24 is less than that imposed by the first radial gap 34 of the rotor 18. The majority of the magnetic flux is then looped by the pallet 24 causing the rotor 18 to stop. attracted position of the pallet 24 (FIG. 2) is stable, as long as the excitation of the coil 36 is maintained. The second control link 60 brings the latching device 62 in the active position, so as to lock the accumulator spring 56 in the armed position, as soon as the rotor 18 stops. Low energy is necessary to keep the pallet 24 in the attracted position .

Pour piloter l'ouverture des contacts du bloc disjoncteur 42 par l'action de la manette 52 du bloc de télécommande 40, il suffit d'interrompre l'alimentation de la bobine 36.Le flux magnétique d'attraction de la palette 24 contre la face polaire 20 disparaît, et le ressort de rappel 28 assure le pivotement de la palette 24 vers la position écartée. L'action d'écartement de la palette 24 sur la deuxième liaison de commande 60 provoque le déplacement du dispositif d'accrochage 62 vers une position inactive, autorisant la détente du ressort 56 accumulateur. La restitution de l'énergie de ce ressort 56 est transmise au mécanisme 48 et à la manette 52 pour assurer l'ouverture du bloc disjoncteur 42.To control the opening of the contacts of the circuit breaker unit 42 by the action of the lever 52 of the remote control unit 40, it suffices to interrupt the supply of the coil 36. The magnetic flux of attraction of the pallet 24 against the polar face 20 disappears, and the return spring 28 ensures the pivoting of the pallet 24 towards the separated position. The spreading action of the pallet 24 on the second control link 60 causes the displacement of the hooking device 62 towards an inactive position, allowing the spring 56 accumulator to relax. The restitution of the energy of this spring 56 is transmitted to the mechanism 48 and to the lever 52 to ensure the opening of the circuit breaker block 42.

En position d'ouverture du bloc disjoncteur 42, le ressort accumulateur 56 est désarmé, et le verrou 30 maintient la palette 24 en position écartée. Le réarmement du ressort 56 s'opère à la refermeture du bloc disjoncteur 42 par excitation de la bobine 36 du bloc de télécommande 40.In the open position of the circuit breaker unit 42, the accumulator spring 56 is disarmed, and the latch 30 keeps the pallet 24 in the separated position. The resetting of the spring 56 takes place when the circuit breaker block 42 is closed again by energizing the coil 36 of the remote control block 40.

On remarque que le mode de fonctionnement en moteur du bloc d'actionnement 10 s'arrête dès la fermeture du bloc disjoncteur 42. A partir de la fin de course d'armement du ressort accumulateur 56, le bloc d'actionnement 10 joue le rôle d'un électro-aimant de manoeuvre avec la même bobine 36 que celle utilisée pour le mode de fonctionnement en moteur.Note that the operating mode of the actuator block 10 stops when the circuit breaker block 42 is closed. From the end of the arming stroke of the accumulator spring 56, the actuation block 10 plays the role of an operating electromagnet with the same coil 36 as that used for the engine operating mode.

Claims (9)

  1. An electromagnetic actuating device (10), notably incorporated in a remote control unit (40), comprising an excitation coil (36) associated with a magnetic circuit (12),
    characterized in that :
    - the magnetic circuit (12) comprises a first series of polar parts (14, 16) limiting a first air-gap (34) for driving in rotation of a rotor (18) equipped with an operating shaft (32), and a second series of polar parts (20, 22) cooperating with a mobile blade (24) made of ferromagnetic material, capable of occupying a separated position with formation of a second air-gap (38), and an attracted position,
    - a return spring (28) causing movement of the blade (24) from the attracted position to the separated position when excitation of the coil (36) is interrupted,
    - and a latch (30) designed to perform locking of the blade (24) in the separated position during the power supply phase of the coil (36), and the rotation phase of the rotor (18), releasing of the blade (24) by unlocking of the latch (30) then causing electromagnetic attraction of the blade (24) against the polar faces (20, 22) of the second series, and automatic stopping of the rotor (18).
  2. The actuating device according to claim 1, characterized in that the blade (24) is pivotally mounted on a spindle (26) of the magnetic circuit (12), and that the shaft (32) of the rotor (18) extends parallel to the articulation spindle (26) of the blade (24).
  3. The actuating device according to claim 1 or 2, characterized in that the shaft (32) of the rotor (18) is mechanically coupled to a speed reducer (46) associated with an operating mechanism (48) for loading of an energy storage spring (56), and for driving of a handle (52).
  4. The actuating device according to claim 3, characterized in that the latch (30) of the blade (24) is connected to the mechanism (48) by a first operating link (58) to bring about unlocking of the latch (30) at the end of loading of the storage spring (56).
  5. The actuating device according to claim 4, characterized in that the mechanism (48) comprises a latching device (62) controlled by a second operating link (60) fixedly secured to the blade (24), the latching device (62) being either active in the attracted position of the blade (24), enabling the storage spring (56) to be maintained in the loaded state as soon as the rotor (18) stops, or inactive when movement of the blade (24) takes place to the separated position enabling relaxation of the spring (56).
  6. The actuating device according to claim 5, characterized in that the handle (52) of the remote control unit (40) is mechanically coupled to the manual operating device for closing and opening of an adjoined circuit breaker unit (42), to bring about closing of the contacts of the circuit breaker unit (42) in the course of loading of the storage spring (56) resulting from the rotation movement of the rotor (18) in the separated position of the blade (24), and opening of the contacts due to the relaxation action of the spring (56) resulting from interruption of excitation of the coil (36).
  7. The actuating device according to one of the claims 3 to 6, characterized in that the mechanism (48) comprises a mechanical transmission link (50) coupled to the handle (52), and a mechanical loading link (54) cooperating with the latching device (62) and with one of the strands of the storage spring (56).
  8. The actuating device according to one of the claims 2 to 7, characterized in that the polar face (20) situated opposite the second air-gap (38) is provided with a phase displacement ring (64) to prevent vibrations when the blade (24) is attracted.
  9. The actuating device according to one of the claims 1 to 8, characterized in that the coil (36) of the magnetic circuit (12) is supplied with alternating current.
EP92420400A 1991-11-22 1992-11-06 Electromagnetic actuator, incorporated in a remote control unit Expired - Lifetime EP0543740B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9114754A FR2684233B1 (en) 1991-11-22 1991-11-22 ELECTROMAGNETIC ACTUATION DEVICE INCORPORATED IN A REMOTE CONTROL BLOCK.
FR9114754 1991-11-22

Publications (2)

Publication Number Publication Date
EP0543740A1 EP0543740A1 (en) 1993-05-26
EP0543740B1 true EP0543740B1 (en) 1995-08-30

Family

ID=9419467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420400A Expired - Lifetime EP0543740B1 (en) 1991-11-22 1992-11-06 Electromagnetic actuator, incorporated in a remote control unit

Country Status (9)

Country Link
US (1) US5276420A (en)
EP (1) EP0543740B1 (en)
JP (1) JPH0629117A (en)
KR (1) KR930011039A (en)
CN (1) CN1028936C (en)
CA (1) CA2083126A1 (en)
DE (1) DE69204426T2 (en)
ES (1) ES2079166T3 (en)
FR (1) FR2684233B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746209B1 (en) * 1996-03-18 1998-04-17 REMOTE CONTROL DEVICE FOR A MODULAR CIRCUIT BREAKER
US6034581A (en) * 1998-06-30 2000-03-07 Siemens Energy & Automation, Inc. Remote controlled circuit breaker
JP4752879B2 (en) 2008-07-04 2011-08-17 パナソニック電工株式会社 Planar coil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2161011A1 (en) * 1971-12-09 1973-06-14 Erich Aichele ACTUATOR
FR2559616B1 (en) * 1984-02-14 1986-05-30 Merlin Gerin AUXILIARY BLOCK FOR REMOTE CONTROL OF AN ELECTRIC CIRCUIT BREAKER
FR2567317B1 (en) * 1984-07-06 1986-11-28 Merlin Gerin REMOTE CONTROL DEVICE, PARTICULARLY FOR OPENING AN ELECTRIC CIRCUIT BREAKER

Also Published As

Publication number Publication date
EP0543740A1 (en) 1993-05-26
JPH0629117A (en) 1994-02-04
ES2079166T3 (en) 1996-01-01
US5276420A (en) 1994-01-04
CA2083126A1 (en) 1993-05-23
FR2684233B1 (en) 1993-12-31
DE69204426T2 (en) 1996-06-20
CN1072798A (en) 1993-06-02
DE69204426D1 (en) 1995-10-05
CN1028936C (en) 1995-06-14
KR930011039A (en) 1993-06-23
FR2684233A1 (en) 1993-05-28

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