EP1501112A1 - Improved magnetic sub-unit and circuit breaker comprising this sub-unit - Google Patents

Improved magnetic sub-unit and circuit breaker comprising this sub-unit Download PDF

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Publication number
EP1501112A1
EP1501112A1 EP04360055A EP04360055A EP1501112A1 EP 1501112 A1 EP1501112 A1 EP 1501112A1 EP 04360055 A EP04360055 A EP 04360055A EP 04360055 A EP04360055 A EP 04360055A EP 1501112 A1 EP1501112 A1 EP 1501112A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
striker
subassembly according
core
magnetic subassembly
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.)
Granted
Application number
EP04360055A
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German (de)
French (fr)
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EP1501112B1 (en
Inventor
Jean-Marc Voirpin
Denis Herbrech
Jean-Michel Vigneron
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Hager Electro SAS
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Hager Electro SAS
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Publication date
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Priority to SI200430099T priority Critical patent/SI1501112T1/en
Publication of EP1501112A1 publication Critical patent/EP1501112A1/en
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Publication of EP1501112B1 publication Critical patent/EP1501112B1/en
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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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/322—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with plunger type armature

Definitions

  • the present invention relates to a magnetic subassembly for modular electrical equipment of the breaker type, as well as that a circuit breaker incorporating such a subset.
  • Line protection circuit breakers include generally, in a modular housing with a plastic shell, a circuit extending between two terminals and comprising a bimetallic strip thermal tripping for the protection of the line against overloads and, between a terminal and a fixed contact, an electromagnetic trip or magnetic trip often grouped with these two components to form a subset magnetic.
  • the magnetic trigger essentially comprises a coil with a movable core, associated with a striker for ensure, in case of overcurrent, the disjunction by opening a mobile contact cooperating with a fixed contact.
  • the trigger includes more precisely a longitudinally mounted induction coil in a magnetic yoke, and surrounding the moving core, which is associated with the firing pin and a fixed core, a return spring arranged between the cores completing the assembly.
  • This spring allows in particular to recall the mobile core in position rest, striker in the inactive position, that is to say at a distance from a mechanical lock allowing the opening of the contacts by tilting mobile contact.
  • the cylinder head consists of a sheet of magnetic material surrounding in general the coil to properly channel the lines of fields produced when the coil is traversed by a current. Subassemblies magnets mounted in one piece are then arranged in a part of the plastic shell of the housing, at the time of circuit breaker assembly.
  • these subsets are essential elements of the circuit-breakers, and their design is therefore the subject of particular care, as well as numerous tests intended to test the validity of the recommended solutions.
  • the main function being linked to the existence of sudden overcurrents, some of these tests are, of course, made in different short circuit configurations, or at least with currents equal to several times the value of the rated current, for which the Magnetic subassembly performance is measured.
  • one of the parameters particularly and especially control is the pulling force of the contacts.
  • the purpose of these checks, and resulting adjustments, is to refine the conditions of triggering the mechanical lock by better control of the electromagnetic trigger and force conveyed by the firing pin.
  • the heating of the different parts of the magnetic subassembly is also a sensitive parameter, for which current tests nominal or slightly higher, in order to reduce it as much as possible.
  • Magnetic subassemblies comprising a cylinder are known fixed guide in which the moving core associated with the striker, as well as a fixed magnetic core.
  • An object of the present invention is therefore to reduce the number of constituent parts of the magnetic subassembly and to simplify them for facilitate their assembly, while maintaining the reliability of said subset magnetic.
  • Another object of the present invention is to increase the performance of the magnetic subassembly without increasing its size, with a view to its integration in an apparatus modular electric.
  • the mobile core is housed in a mobile support, driven by the mobile core, and secured to the striker.
  • the mobile support and the striker are made in one piece, for example plastic.
  • the mobile support is for example a cylindrical piece ending at one of its ends by a rod constituting the striker.
  • the mobile core is furthermore devoid of any chamfering, drilling or countersink, thus increasing its polar surface. No step of solidarization of the striker on the mobile core is moreover necessary.
  • the elastic return means is for example mounted between the support mobile and the magnetic yoke.
  • This elastic return means is by example consisting of a flexible blade.
  • the positioning of this means of elastic recall avoids any interaction with field lines magnetic generated in the gap.
  • the performance of the subset magnetic and are improved and its mounting in the cylinder head is also simplified by its configuration.
  • the magnetic subassembly comprises means for guiding the striker in translation.
  • the guiding means comprises, for example, a closed opening in the breech, and crossed by the striker.
  • the translation guide of the striker indirectly ensures the translational guidance of the mobile support and therefore of the subset mobile mechanics. No additional guidance means is necessary, thus contributing to the reduction of the number of constituent of the magnetic subassembly according to the invention.
  • the guiding means comprises an opening in a fixed core and traversed by the striker.
  • the fixed magnetic core is for example integral with the cylinder head.
  • the cylinder head is made in one magnetic material constituting a complementary magnetic element fixed.
  • a part of the breech, facing one side pole of the mobile magnetic core constitutes the magnetic element complementary fixed.
  • the breech may also be non-magnetic and associated or not with a core magnetic fixed.
  • the magnetic subassembly according to the invention also has the advantage of being adaptable to various constraints, both structurally that functional.
  • the induction coil is a coil with disjointed turns.
  • the number of turns can advantageously be reduced since the polar surface of the moving core is increased.
  • the absence of contact between the adjacent turns also makes it possible to avoid to coat them with a layer of electrical insulating enamel, contributing to a reducing the cost price of such an induction coil without adversely affect the performance of the magnetic subassembly.
  • the ends of the coil Inductors move tangentially from the turns of the coil. Such a configuration avoids folding operations of said ends and therefore reduce the cost price of such a coil induction.
  • the present invention finds particular application in the electrical circuit breaker field, incorporating a subset magnetic as described above.
  • the magnetic subassembly represented for example in FIG. comprises a magnetic yoke (1) made for example of a material magnet and an induction coil (2) to be mounted longitudinally in the cylinder head (1).
  • the cylinder head (1) makes it possible to channel at least partially the lines of magnetic field generated by an electric current flowing through the coil induction (2).
  • the cylinder head (1) can be nonmagnetic.
  • the magnetic subassembly also has a core movable magnet (3) made of a magnetic material, for example steel.
  • the core (3) has a substantially cylindrical shape and two polar faces (4) and (5).
  • a striker (6), moving with the movable core (3), is also planned and allows to open an electrical contact when moving from one inactive position to an active position.
  • An elastic return means is provided so as to be solicited by the movement of the striker (6). So when the flow of current electrical supply in the induction coil (2) is interrupted, the means of elastic return (7a, 7b) automatically returns the firing pin (6) in its inactive position and the electrical contact can be closed again.
  • connection terminal (10) to the magnetic subassembly to which is connected the second end (2b) of the coil (2) is also provided.
  • Part of the breech (1), facing the polar face (5) of the mobile magnetic core (3) then constitutes a fixed magnetic core.
  • the air gap (11) is in this embodiment devoid of a core stationary magnet and is at least partially deported outside the the magnetic coil (2).
  • the mobile core (3) is also simplified in its form, which is for example cylindrical.
  • connection terminal (10) is advantageously extended by a magnetic portion (10a) extending along the coil (2) and allowing to partially channel the magnetic field lines generated by the induction coil (2).
  • the cylinder head (1) as well as the magnetic part (10a) thus delimit a housing in which is inserted the coil magnetic (2).
  • the subassembly magnetic comprises a fixed magnetic core (3a), integral of the breech (1) and crossed by the striker (6).
  • the gap (11) is located between the polar faces facing each other, the mobile core (3) and fixed core (3a).
  • the gap (11) then extends into the interior volume delimited by the magnetic coil (2).
  • the fixed core (3a) is fixed on the cylinder head (1) by any known means, and in particular by mounting in force or by welding.
  • the mobile core (3) is housed in a mobile support (13) driven by said movable core (3) and integral with the striker (6).
  • a mobile mechanical subassembly displaced by the circulation of a overcurrent in the induction coil (2).
  • the dimensions of the kernel mobile (3) and air gap (11) are chosen according to the force necessary to allow the striker (6) to open a contact electric.
  • the movement of the firing pin (6) makes it possible to tear off a contact mobile device (8a) resting on the contact pad (9) and interrupting the circulation of an electric current in the induction coil (2).
  • the way elastic return allows, as soon as the flow of current is interrupted electric in the induction coil (2), to bring back the subset movable mechanism, namely the movable core (3), the movable support (13) and the striker (6) in its inactive position.
  • the mobile support (13) and the striker (6) are made in one piece, for example plastic or any other electrical insulating material.
  • the mobile support (13) is a part cylindrical end at one of its ends by a rod constituting the striker (6).
  • the manufacture of such a mobile support (13) by injection is therefore particularly simple and its dimensions are chosen so as to to secure it with the mobile core (3) by a simple operation fitting.
  • Other known technical means of the collage type may also be provided to secure the mobile core (3) with the mobile support (13).
  • the elastic return means is mounted between the movable support (13) and the magnetic yoke (1).
  • This elastic return means is for example consisting of a flexible blade (7a) having openings to be traversed by positioning studs (1a) present in number more or less important on the cylinder head (1).
  • the striker (6) passes through an opening (1b) arranged in the cylinder head (1).
  • This opening (1b) constitutes a means of translational guidance of the striker (6) and indirectly a means of guiding the mobile mechanical subassembly, the latter not being connected to the cylinder head (1) via the elastic return means.
  • the fixed core (3a) is engaged in the opening (1b), constitutes a guide piece for the striker (6).
  • the induction coil (2) advantageously has turns disjoint. Given the fact that the polar face (5) is relatively important and that it does not include any recess, chamfer or counterbore likely to alter the magnetic field lines, the reduction of the number of turns surrounding the mobile core (3) can maintain or to improve the performance of the magnetic subassembly.
  • the ends (2a) and (2b) of the induction coil (2) move apart tangentially turns of the coil (2). Any folding operation said ends (2a, 2b) are suppressed. We thus obtain in more than one way, a reduction in the cost price of such an induction coil (2).
  • the elastic return means can also be constituted as the shows for example Figures 3 to 5, an elastic strip (7b) integral of the mobile support (13).
  • This elastic strip (7b) extends for example to the outside of the constituent cylinder of the mobile support (13) in the form of Peripheral crown. The latter then takes support on one side side (1a) of the cylinder head (1).
  • the elastic lamella (7b) is deformed and then resumes its initial shape as soon as the interruption of the electric current flowing in the induction coil (2), returning the striker (6) to its inactive position.
  • the means of elastic return consists of a spring washer (7c) positioned in the gap (11).
  • the spring washer (7c) is supported on the face (12) internal of the cylinder head (1) and on one of the ends of the mobile support (13).
  • this spring washer (7c) is compressed.
  • this spring washer (7c) made for example, made of plastic or metal, or foam, resumes its original shape and returns the movable support (13) to its corresponding rest position at the inactive position of the striker (6).
  • the yoke (1) is non-magnetic and no fixed magnetic core is attached to said cylinder head (1).
  • the displacement of the mobile core 3 is obtained by a location area given a maximum density of magnetic field lines, and to which he is trained. Such a displacement suffices to actuate the striker (6).
  • Fig. 8 shows a partially cut-away view, for purposes of clarity, a circuit breaker (15) according to the invention.
  • the circuit breaker (15) incorporating a magnetic subassembly according to the invention comprises a modular housing (16) provided with fixing means (17), by example on a support type mounting rail (not shown).
  • the circuit breaker (15) has a lever-type actuator tilting device (18) for moving the movable contact (8a) between a opening and closing position (see figure 8) of the electrical connection with the fixed contact (8).
  • the striker (6) acts on a mechanical lock (19) known as such, which moves the movable contact (8a) to open the electrical connection with the fixed contact (8).
  • This opening leads to the interruption of the circulation of an electric current between the terminals of connection (10) of the circuit breaker and automatically returns the handle (18) in the position corresponding to the separation of the fixed contacts (8) and mobile (8a), thanks to the mechanical lock (19).
  • the mechanical lock (19) can be actuated to interrupt the current flow either by the striker (6) or by a bimetallic strip thermal tripping incorporated in the circuit-breaker (15) (no represented in the figures).

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Air Bags (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

The sub-assembly has an induction coil (2), a movable magnetic core (3), and a striker (6) that moves with the movable magnetic core. Spring plates are solicited by the movement of the striker. The movable core is housed in a movable support (13) that is driven by the movable core and integrated to the striker. The spring plates are positioned between the support and a magnetic yoke (1). An independent claim is also included for an electrical circuit breaker comprising a magnetic sub-assembly.

Description

La présente invention concerne un sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur, ainsi qu'un disjoncteur incorporant un tel sous-ensemble.The present invention relates to a magnetic subassembly for modular electrical equipment of the breaker type, as well as that a circuit breaker incorporating such a subset.

Les disjoncteurs de protection de ligne comportent généralement, dans un boítier modulaire à coque en plastique, un circuit s'étendant entre deux bornes et comprenant un bilame de déclenchement thermique pour la protection de la ligne contre les surcharges et, entre une borne et un contact fixe, un organe électromagnétique de disjonction ou déclencheur magnétique souvent regroupé avec ces deux composants pour former un sous-ensemble magnétique.Line protection circuit breakers include generally, in a modular housing with a plastic shell, a circuit extending between two terminals and comprising a bimetallic strip thermal tripping for the protection of the line against overloads and, between a terminal and a fixed contact, an electromagnetic trip or magnetic trip often grouped with these two components to form a subset magnetic.

Le déclencheur magnétique comprend essentiellement une bobine avec un noyau mobile, associés à un percuteur pour assurer, en cas de surintensité, la disjonction par ouverture d'un contact mobile coopérant avec un contact fixe.The magnetic trigger essentially comprises a coil with a movable core, associated with a striker for ensure, in case of overcurrent, the disjunction by opening a mobile contact cooperating with a fixed contact.

Dans la plupart des cas, le déclencheur comprend plus précisément une bobine à induction montée longitudinalement dans une culasse magnétique, et entourant le noyau mobile, lequel est associé au percuteur et à un noyau fixe, un ressort de rappel disposé entre les noyaux venant compléter le montage. Ce ressort permet notamment de rappeler le noyau mobile en position de repos, percuteur en position inactive, c'est-à-dire à distance d'une serrure mécanique permettant l'ouverture des contacts par basculement du contact mobile.In most cases, the trigger includes more precisely a longitudinally mounted induction coil in a magnetic yoke, and surrounding the moving core, which is associated with the firing pin and a fixed core, a return spring arranged between the cores completing the assembly. This spring allows in particular to recall the mobile core in position rest, striker in the inactive position, that is to say at a distance from a mechanical lock allowing the opening of the contacts by tilting mobile contact.

La culasse est constituée d'une tôle en matériau magnétique entourant en général la bobine pour canaliser correctement les lignes de champs produites, lorsque la bobine est parcourue par un courant. Les sous-ensembles magnétiques montés en une seule pièce sont ensuite disposés dans une partie de la coque plastique du boítier, au moment de l'assemblage du disjoncteur.The cylinder head consists of a sheet of magnetic material surrounding in general the coil to properly channel the lines of fields produced when the coil is traversed by a current. Subassemblies magnets mounted in one piece are then arranged in a part of the plastic shell of the housing, at the time of circuit breaker assembly.

Comme leur fonction le laisse supposer, ces sous-ensembles magnétiques sont des éléments essentiels des disjoncteurs, et leur conception fait par conséquent l'objet d'un soin particulier, ainsi que de nombreux tests destinés à éprouver la validité des solutions préconisées. La fonction principale étant liée à l'existence de surintensités brutales, certains de ces tests sont, bien entendu, réalisés dans différentes configurations de courts-circuits, ou à tout le moins avec des courants égaux à plusieurs fois la valeur du courant nominal, pour lesquels les performances du sous-ensemble magnétique sont mesurées.As their function suggests, these subsets are essential elements of the circuit-breakers, and their design is therefore the subject of particular care, as well as numerous tests intended to test the validity of the recommended solutions. The main function being linked to the existence of sudden overcurrents, some of these tests are, of course, made in different short circuit configurations, or at least with currents equal to several times the value of the rated current, for which the Magnetic subassembly performance is measured.

Pendant ces périodes de fonctionnement extrême, un des paramètres sur lesquels porte notamment et de manière particulièrement rigoureuse le contrôle, est la force d'arrachage des contacts. Le but de ces contrôles, et des ajustements qui en résultent, est d'affiner les conditions de déclenchement de la serrure mécanique par un meilleur contrôle du déclencheur électromagnétique et de la force véhiculée par le percuteur.During these periods of extreme operation, one of the parameters particularly and especially control, is the pulling force of the contacts. The purpose of these checks, and resulting adjustments, is to refine the conditions of triggering the mechanical lock by better control of the electromagnetic trigger and force conveyed by the firing pin.

L'échauffement des différentes parties du sous-ensemble magnétique est également un paramètre sensible, pour lequel des tests à courant nominal ou légèrement supérieur sont effectués, dans le but de le diminuer autant que possible.The heating of the different parts of the magnetic subassembly is also a sensitive parameter, for which current tests nominal or slightly higher, in order to reduce it as much as possible.

Il est ainsi connu de réaliser des sous-ensembles magnétiques pour appareillage électronique modulaire du type disjoncteur comportant :

  • une bobine d'induction
  • un noyau magnétique mobile,
  • un percuteur se déplaçant avec le noyau mobile,
  • et un moyen de rappel élastique sollicité par le déplacement du percuteur.
It is thus known to produce magnetic subassemblies for modular circuit-breaker type electronic apparatus comprising:
  • an induction coil
  • a mobile magnetic core,
  • a striker moving with the moving core,
  • and an elastic return means biased by the movement of the firing pin.

On connaít des sous-ensembles magnétiques comportant un cylindre de guidage fixe dans lequel se déplace le noyau mobile associé au percuteur, ainsi qu'un noyau magnétique fixe. Magnetic subassemblies comprising a cylinder are known fixed guide in which the moving core associated with the striker, as well as a fixed magnetic core.

Afin de tenir compte de tous les paramètres de fonctionnement et notamment des paramètres de sécurité assurant une fiabilité de l'arrachage des contacts en cas de surintensité, il devient difficile d'agir sur l'un des paramètres sans influencer d'autres paramètres de fonctionnement.In order to take into account all the operating parameters and in particular safety parameters ensuring reliable pulling contacts in case of overcurrent, it becomes difficult to act on any of the parameters without influencing other operating parameters.

Un objectif de la présente invention vise donc à réduire le nombre de pièces constitutives du sous-ensemble magnétique et de les simplifier pour faciliter leur assemblage, tout en conservant la fiabilité dudit sous-ensemble magnétique.An object of the present invention is therefore to reduce the number of constituent parts of the magnetic subassembly and to simplify them for facilitate their assembly, while maintaining the reliability of said subset magnetic.

Un autre objectif de la présente invention vise à augmenter les performances du sous-ensemble magnétique sans pour autant augmenter son encombrement, en vue de son intégration dans un appareillage électrique modulaire.Another object of the present invention is to increase the performance of the magnetic subassembly without increasing its size, with a view to its integration in an apparatus modular electric.

Selon l'invention, le noyau mobile est logé dans un support mobile, entraíné par le noyau mobile, et solidaire du percuteur.According to the invention, the mobile core is housed in a mobile support, driven by the mobile core, and secured to the striker.

On obtient ainsi un sous-ensemble mécanique mobile de configuration simplifiée et dont le montage dans une culasse est simplifié.This gives a mobile mechanical configuration sub-assembly simplified and whose assembly in a cylinder head is simplified.

Selon un exemple de réalisation, le support mobile et le percuteur sont réalisés en une seule pièce, par exemple en matière plastique.According to an exemplary embodiment, the mobile support and the striker are made in one piece, for example plastic.

Le support mobile est par exemple une pièce cylindrique se terminant à l'une de ses extrémités par une tige constituant le percuteur. On obtient ainsi une réduction du nombre de pièces constitutives du sous-ensemble magnétique et un assemblage relativement simple dans la mesure où il suffit d'introduire le noyau mobile dans le cylindre constitutif du support mobile pour obtenir le sous-ensemble mécanique mobile.The mobile support is for example a cylindrical piece ending at one of its ends by a rod constituting the striker. We obtain thus a reduction in the number of parts constituting the subset magnetic and a relatively simple assembly as far as it simply introduce the mobile core into the cylinder constituting the support mobile to obtain the mobile mechanical subassembly.

Le noyau mobile est en outre dépourvu de tout chanfrein, perçage ou lamage, augmentant ainsi sa surface polaire. Aucune étape de solidarisation du percuteur sur le noyau mobile n'est par ailleurs nécessaire.The mobile core is furthermore devoid of any chamfering, drilling or countersink, thus increasing its polar surface. No step of solidarization of the striker on the mobile core is moreover necessary.

Le moyen de rappel élastique est par exemple monté entre le support mobile et la culasse magnétique. Ce moyen de rappel élastique est par exemple constitué d'une lame flexible. Le positionnement de ce moyen de rappel élastique évite toute interaction avec des lignes de champ magnétique générées dans l'entrefer. Les performances du sous-ensemble magnétique sont ainsi améliorées et son montage dans la culasse se trouve également simplifié de par sa configuration.The elastic return means is for example mounted between the support mobile and the magnetic yoke. This elastic return means is by example consisting of a flexible blade. The positioning of this means of elastic recall avoids any interaction with field lines magnetic generated in the gap. The performance of the subset magnetic and are improved and its mounting in the cylinder head is is also simplified by its configuration.

Selon un exemple de réalisation, le sous-ensemble magnétique comporte un moyen de guidage en translation du percuteur.According to an exemplary embodiment, the magnetic subassembly comprises means for guiding the striker in translation.

Le moyen de guidage comporte par exemple une ouverture ménagée dans la culasse, et traversée par le percuteur. The guiding means comprises, for example, a closed opening in the breech, and crossed by the striker.

Le guidage en translation du percuteur assure indirectement le guidage en translation du support mobile et par conséquent du sous-ensemble mécanique mobile. Aucun moyen de guidage additionnel n'est nécessaire, contribuant ainsi à la réduction du nombre de pièces constitutives du sous-ensemble magnétique conforme à l'invention.The translation guide of the striker indirectly ensures the translational guidance of the mobile support and therefore of the subset mobile mechanics. No additional guidance means is necessary, thus contributing to the reduction of the number of constituent of the magnetic subassembly according to the invention.

Selon un autre exemple de réalisation, le moyen de guidage comporte une ouverture ménagée dans un noyau fixe et traversée par le percuteur.According to another embodiment, the guiding means comprises an opening in a fixed core and traversed by the striker.

Le noyau magnétique fixe est par exemple solidaire de la culasse.The fixed magnetic core is for example integral with the cylinder head.

Selon un exemple de réalisation, la culasse est réalisée en un matériau magnétique, constituant un élément magnétique complémentaire fixe.According to an exemplary embodiment, the cylinder head is made in one magnetic material constituting a complementary magnetic element fixed.

Selon un exemple de réalisation du sous-ensemble magnétique conforme à l'invention, une partie de la culasse, en regard d'une face polaire du noyau magnétique mobile, constitue l'élément magnétique complémentaire fixe.According to an exemplary embodiment of the magnetic subassembly according to the invention, a part of the breech, facing one side pole of the mobile magnetic core, constitutes the magnetic element complementary fixed.

La culasse peut aussi être amagnétique et associée ou non à un noyau magnétique fixe.The breech may also be non-magnetic and associated or not with a core magnetic fixed.

Le sous-ensemble magnétique conforme à l'invention présente aussi l'avantage d'être adaptable à diverses contraintes, tant sur le plan structurel que fonctionnel.The magnetic subassembly according to the invention also has the advantage of being adaptable to various constraints, both structurally that functional.

Selon un exemple de réalisation, la bobine d'induction est une bobine à spires disjointes. Le nombre de spires peut avantageusement être réduit dans la mesure où la surface polaire du noyau mobile est augmentée. L'absence de contact entre les spires adjacentes permet en outre d'éviter de les enduire d'une couche d'émail isolant électrique, contribuant à une réduction du prix de revient d'une telle bobine d'induction sans pour autant nuire aux performances du sous-ensemble magnétique.According to an exemplary embodiment, the induction coil is a coil with disjointed turns. The number of turns can advantageously be reduced since the polar surface of the moving core is increased. The absence of contact between the adjacent turns also makes it possible to avoid to coat them with a layer of electrical insulating enamel, contributing to a reducing the cost price of such an induction coil without adversely affect the performance of the magnetic subassembly.

Selon un exemple de réalisation, les extrémités de la bobine d'induction s'écartent tangentiellement des spires de la bobine. Une telle configuration permet d'éviter des opérations de pliage desdites extrémités et par conséquent de réduire le prix de revient d'une telle bobine d'induction.According to an exemplary embodiment, the ends of the coil Inductors move tangentially from the turns of the coil. Such a configuration avoids folding operations of said ends and therefore reduce the cost price of such a coil induction.

La présente invention trouve particulièrement son application dans le domaine des disjoncteurs électriques, incorporant un sous-ensemble magnétique tel que décrit ci-dessus.The present invention finds particular application in the electrical circuit breaker field, incorporating a subset magnetic as described above.

D'autres caractéristiques et avantages ressortiront également de la description détaillée, donnée ci-après à titre d'exemple non limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue éclatée d'un exemple de réalisation d'un sous-ensemble magnétique conforme à l'invention,
  • la figure 2 est une vue en coupe d'un exemple de réalisation d'un sous-ensemble magnétique conforme à l'invention,
  • la figure 3 est une vue en éclaté d'un autre exemple de réalisation d'un sous-ensemble magnétique conforme à l'invention,
  • la figure 4 est un détail de la figure 3,
  • la figure 5 représente le sous-ensemble magnétique de la figure 3 une fois assemblé,
  • la figure 6 est un autre exemple de réalisation d'un sous-ensemble magnétique conforme à l'invention,
  • la figure 7 est une vue en coupe d'un autre exemple de réalisation, d'un sous-ensemble magnétique conforme à l'invention,
  • la figure 8 représente un disjoncteur incorporant un sous-ensemble magnétique conforme à l'invention.
Other features and advantages will also emerge from the detailed description given hereinafter by way of non-limiting example, with reference to the appended drawings, in which:
  • FIG. 1 is an exploded view of an exemplary embodiment of a magnetic subassembly according to the invention,
  • FIG. 2 is a sectional view of an exemplary embodiment of a magnetic subassembly according to the invention,
  • FIG. 3 is an exploded view of another embodiment of a magnetic subassembly according to the invention,
  • FIG. 4 is a detail of FIG. 3,
  • FIG. 5 represents the magnetic subassembly of FIG. 3 once assembled,
  • FIG. 6 is another embodiment of a magnetic subassembly according to the invention,
  • FIG. 7 is a sectional view of another exemplary embodiment of a magnetic subassembly according to the invention,
  • FIG. 8 represents a circuit breaker incorporating a magnetic subassembly according to the invention.

Le sous-ensemble magnétique représenté par exemple à la figure 1 comporte une culasse magnétique (1) réalisée par exemple en un matériau magnétique ainsi qu'une bobine d'induction (2) destinée à être montée longitudinalement dans la culasse (1).The magnetic subassembly represented for example in FIG. comprises a magnetic yoke (1) made for example of a material magnet and an induction coil (2) to be mounted longitudinally in the cylinder head (1).

La culasse (1) permet de canaliser au moins en partie les lignes de champ magnétique générées par un courant électrique traversant la bobine d'induction (2).The cylinder head (1) makes it possible to channel at least partially the lines of magnetic field generated by an electric current flowing through the coil induction (2).

Selon un autre exemple de réalisation, la culasse (1) peut être amagnétique.According to another embodiment, the cylinder head (1) can be nonmagnetic.

Le sous-ensemble magnétique comporte également un noyau magnétique mobile (3) réalisé avec un matériau magnétique, par exemple de l'acier. Le noyau (3) présente une forme sensiblement cylindrique et deux faces polaires (4) et (5).The magnetic subassembly also has a core movable magnet (3) made of a magnetic material, for example steel. The core (3) has a substantially cylindrical shape and two polar faces (4) and (5).

Un percuteur (6), se déplaçant avec le noyau mobile (3), est également prévu et permet d'ouvrir un contact électrique lorsqu'il se déplace d'une position inactive vers une position active.A striker (6), moving with the movable core (3), is also planned and allows to open an electrical contact when moving from one inactive position to an active position.

Un moyen de rappel élastique est prévu de manière à être sollicité par le déplacement du percuteur (6). Ainsi, lorsque la circulation du courant électrique dans la bobine d'induction (2) est interrompue, le moyen de rappel élastique (7a, 7b) ramène automatiquement le percuteur (6) dans sa position inactive et le contact électrique peut à nouveau être fermé.An elastic return means is provided so as to be solicited by the movement of the striker (6). So when the flow of current electrical supply in the induction coil (2) is interrupted, the means of elastic return (7a, 7b) automatically returns the firing pin (6) in its inactive position and the electrical contact can be closed again.

Un contact fixe (8), auquel est reliée une première extrémité (2a) de la bobine d'induction (2), est solidaire ou fait partie intégrante de la culasse

  • (1). Une pastille de contact (9) est avantageusement rapportée sur le contact fixe (8).
    • A fixed contact (8), to which is connected a first end (2a) of the induction coil (2), is integral or integral with the cylinder head
  • (1). A contact pad (9) is advantageously attached to the fixed contact (8).

    • Une borne (10) de connexion au sous-ensemble magnétique à laquelle est reliée la seconde extrémité (2b) de la bobine (2) est également prévue.A connection terminal (10) to the magnetic subassembly to which is connected the second end (2b) of the coil (2) is also provided.

    Le sous-ensemble magnétique représenté à la figure (2) présente un entrefer (11) réalisé entre la face polaire (5) du noyau mobile (3) et une face interne (12) de la culasse (1), lesquelles sont en regard l'une (5) de l'autre (12). Une partie de la culasse (1), en regard de la face polaire (5) du noyau magnétique mobile (3) constitue alors un noyau magnétique fixe.The magnetic subassembly shown in FIG. gap (11) formed between the pole face (5) of the movable core (3) and a internal face (12) of the cylinder head (1), which are opposite one (5) of the other (12). Part of the breech (1), facing the polar face (5) of the mobile magnetic core (3) then constitutes a fixed magnetic core.

    L'entrefer (11) est dans ce mode de réalisation dépourvu d'un noyau magnétique fixe et se trouve déporté au moins partiellement à l'extérieur de la bobine magnétique (2).The air gap (11) is in this embodiment devoid of a core stationary magnet and is at least partially deported outside the the magnetic coil (2).

    Le noyau mobile (3) est également simplifié dans sa forme, laquelle est par exemple cylindrique.The mobile core (3) is also simplified in its form, which is for example cylindrical.

    La borne de connexion (10) se prolonge avantageusement par une partie magnétique (10a) s'étendant le long de la bobine (2) et permettant de canaliser en partie les lignes de champ magnétique générées par la bobine d'induction (2). La culasse (1) de même que la partie magnétique (10a) délimitent ainsi un logement dans lequel est insérée la bobine magnétique (2).The connection terminal (10) is advantageously extended by a magnetic portion (10a) extending along the coil (2) and allowing to partially channel the magnetic field lines generated by the induction coil (2). The cylinder head (1) as well as the magnetic part (10a) thus delimit a housing in which is inserted the coil magnetic (2).

    Selon l'exemple de réalisation représenté à la figure 7, le sous-ensemble magnétique comprend un noyau magnétique fixe (3a), solidaire de la culasse (1) et traversé par le percuteur (6). L'entrefer (11) est localisé entre les faces polaires en regard l'une de l'autre, du noyau mobile (3) et du noyau fixe (3a). L'entrefer (11) s'étend alors dans le volume intérieur délimité par la bobine magnétique (2). Le noyau fixe (3a) est fixé sur la culasse (1) par tout moyen connu, et notamment par un montage en force ou par soudure.According to the embodiment shown in FIG. 7, the subassembly magnetic comprises a fixed magnetic core (3a), integral of the breech (1) and crossed by the striker (6). The gap (11) is located between the polar faces facing each other, the mobile core (3) and fixed core (3a). The gap (11) then extends into the interior volume delimited by the magnetic coil (2). The fixed core (3a) is fixed on the cylinder head (1) by any known means, and in particular by mounting in force or by welding.

    Le noyau mobile (3) est logé dans un support mobile (13) entraíné par ledit noyau mobile (3) et solidaire du percuteur (6). On obtient ainsi un sous-ensemble mécanique mobile, déplacé par la circulation d'une surintensité dans la bobine d'induction (2). Les dimensions du noyau mobile (3) et de l'entrefer (11) sont choisies en fonction de la force d'arrachage nécessaire pour permettre au percuteur (6) d'ouvrir un contact électrique. Le déplacement du percuteur (6) permet d'arracher un contact mobile (8a) s'appuyant sur la pastille de contact (9) et d'interrompre la circulation d'un courant électrique dans la bobine d'induction (2). Le moyen de rappel élastique permet, dès l'interruption de la circulation de courant électrique dans la bobine d'induction (2), de ramener le sous-ensemble mécanique mobile, à savoir le noyau mobile (3), le support mobile (13) et le percuteur (6) dans sa position inactive.The mobile core (3) is housed in a mobile support (13) driven by said movable core (3) and integral with the striker (6). We thus obtain a mobile mechanical subassembly, displaced by the circulation of a overcurrent in the induction coil (2). The dimensions of the kernel mobile (3) and air gap (11) are chosen according to the force necessary to allow the striker (6) to open a contact electric. The movement of the firing pin (6) makes it possible to tear off a contact mobile device (8a) resting on the contact pad (9) and interrupting the circulation of an electric current in the induction coil (2). The way elastic return allows, as soon as the flow of current is interrupted electric in the induction coil (2), to bring back the subset movable mechanism, namely the movable core (3), the movable support (13) and the striker (6) in its inactive position.

    Avantageusement le support mobile (13) et le percuteur (6) sont réalisés en une seule pièce, par exemple en matière plastique ou tout autre matériau isolant électrique. Le support mobile (13) est une pièce cylindrique se terminant à l'une de ses extrémités par une tige constituant le percuteur (6). La fabrication d'un tel support mobile (13) par injection est donc particulièrement simple et ses dimensions sont choisies de manière à le solidariser avec le noyau mobile (3) par une simple opération d'emmanchement. D'autres moyens techniques connus du type collage peuvent également être prévus pour solidariser le noyau mobile (3) avec le support mobile (13).Advantageously, the mobile support (13) and the striker (6) are made in one piece, for example plastic or any other electrical insulating material. The mobile support (13) is a part cylindrical end at one of its ends by a rod constituting the striker (6). The manufacture of such a mobile support (13) by injection is therefore particularly simple and its dimensions are chosen so as to to secure it with the mobile core (3) by a simple operation fitting. Other known technical means of the collage type may also be provided to secure the mobile core (3) with the mobile support (13).

    Le moyen de rappel élastique est monté entre le support mobile (13) et la culasse magnétique (1). Ce moyen de rappel élastique est par exemple constitué d'une lame flexible (7a) présentant des ouvertures susceptibles d'être traversées par des plots de positionnement (1a) présents en nombre plus ou moins important sur la culasse (1).The elastic return means is mounted between the movable support (13) and the magnetic yoke (1). This elastic return means is for example consisting of a flexible blade (7a) having openings to be traversed by positioning studs (1a) present in number more or less important on the cylinder head (1).

    Dans l'exemple de réalisation représenté par exemple à la figure 2 ou 7, il apparaít clairement que le percuteur (6) traverse une ouverture (1 b) ménagée dans la culasse (1). Cette ouverture (1b) constitue un moyen de guidage en translation du percuteur (6) et indirectement un moyen de guidage du sous-ensemble mécanique mobile, ce dernier n'étant relié à la culasse (1) via le moyen de rappel élastique. Dans l'exemple de réalisation représenté à la figure 7, le noyau fixe (3a) est engagé dans l'ouverture (1 b), constitue une pièce de guidage pour le percuteur (6).In the exemplary embodiment shown for example in FIG. 7, it is clear that the striker (6) passes through an opening (1b) arranged in the cylinder head (1). This opening (1b) constitutes a means of translational guidance of the striker (6) and indirectly a means of guiding the mobile mechanical subassembly, the latter not being connected to the cylinder head (1) via the elastic return means. In the example embodiment represented in FIG. 7, the fixed core (3a) is engaged in the opening (1b), constitutes a guide piece for the striker (6).

    La bobine d'induction (2) présente avantageusement des spires disjointes. Compte tenu du fait que la face polaire (5) est relativement importante et qu'elle ne comporte ni décrochement, ni chanfrein, ni lamage susceptibles d'altérer les lignes de champ magnétique, la réduction du nombre de spires entourant le noyau mobile (3) permet de maintenir, voire d'améliorer, les performances du sous-ensemble magnétique.The induction coil (2) advantageously has turns disjoint. Given the fact that the polar face (5) is relatively important and that it does not include any recess, chamfer or counterbore likely to alter the magnetic field lines, the reduction of the number of turns surrounding the mobile core (3) can maintain or to improve the performance of the magnetic subassembly.

    En outre, la séparation ou l'absence de contact entre des spires adjacentes permet de supprimer tout revêtement du type émail isolant électrique sur les spires.In addition, the separation or the absence of contact between turns adjacent to remove any coating of the type insulating enamel electric on the turns.

    Les extrémités (2a) et (2b) de la bobine d'induction (2) s'écartent tangentiellement des spires de la bobine (2). Toute opération de pliage desdites extrémités (2a, 2b) est supprimée. On obtient ainsi à plus d'un titre, une réduction du prix de revient d'une telle bobine d'induction (2). The ends (2a) and (2b) of the induction coil (2) move apart tangentially turns of the coil (2). Any folding operation said ends (2a, 2b) are suppressed. We thus obtain in more than one way, a reduction in the cost price of such an induction coil (2).

    Le moyen de rappel élastique peut également être constitué comme le montre par exemple les figures 3 à 5, d'une lamelle élastique (7b) solidaire du support mobile (13). Cette lamelle élastique (7b) s'étend par exemple à l'extérieur du cylindre constitutif du support mobile (13) sous forme de couronne périphérique. Cette dernière prend alors appui sur une face latérale (1a) de la culasse (1). Lors du déplacement du support mobile (13), la lamelle élastique (7b) se déforme et reprend ensuite sa forme initiale dès l'interruption du courant électrique circulant dans la bobine d'induction (2), ramenant dans sa position inactive le percuteur (6).The elastic return means can also be constituted as the shows for example Figures 3 to 5, an elastic strip (7b) integral of the mobile support (13). This elastic strip (7b) extends for example to the outside of the constituent cylinder of the mobile support (13) in the form of Peripheral crown. The latter then takes support on one side side (1a) of the cylinder head (1). When moving the mobile support (13), the elastic lamella (7b) is deformed and then resumes its initial shape as soon as the interruption of the electric current flowing in the induction coil (2), returning the striker (6) to its inactive position.

    Selon un autre exemple de réalisation du sous-ensemble magnétique conforme à l'invention, représenté par exemple à la figure (6), le moyen de rappel élastique est constitué d'une rondelle élastique (7c) positionnée dans l'entrefer (11). La rondelle élastique (7c) prend appui sur la face (12) interne de la culasse (1) et sur l'une des extrémités du support mobile (13). Lors du déplacement du support mobile (13), la rondelle élastique (7c) est comprimée. Dès l'interruption de la circulation du courant électrique dans la bobine d'induction (2), cette rondelle élastique (7c) réalisée par exemple, en matière plastique ou métallique, ou en mousse, reprend sa forme initiale et ramène le support mobile (13) dans sa position de repos correspondant à la position inactive du percuteur (6).According to another embodiment of the magnetic subassembly according to the invention, represented for example in FIG. (6), the means of elastic return consists of a spring washer (7c) positioned in the gap (11). The spring washer (7c) is supported on the face (12) internal of the cylinder head (1) and on one of the ends of the mobile support (13). When moving the mobile support (13), the spring washer (7c) is compressed. Upon interruption of the flow of electric current in the induction coil (2), this spring washer (7c) made for example, made of plastic or metal, or foam, resumes its original shape and returns the movable support (13) to its corresponding rest position at the inactive position of the striker (6).

    Dans un autre exemple de réalisation, la culasse (1) est amagnétique et aucun noyau magnétique fixe n'est rapporté sur ladite culasse (1). Le déplacement du noyau mobile 3 est obtenu par une zone de localisation donnée d'une densité maximale de lignes de champ magnétique, et vers laquelle il est entraíné. Un tel déplacement suffit à actionner le percuteur (6).In another embodiment, the yoke (1) is non-magnetic and no fixed magnetic core is attached to said cylinder head (1). The displacement of the mobile core 3 is obtained by a location area given a maximum density of magnetic field lines, and to which he is trained. Such a displacement suffices to actuate the striker (6).

    La figure 8 représente une vue partiellement découpée, à des fins de clarté, d'un disjoncteur (15) conforme à l'invention. Le disjoncteur (15) incorporant un sous-ensemble magnétique conforme à l'invention, comporte un boítier modulaire (16) pourvu de moyens de fixation (17), par exemple sur un support du type rail de montage (non représenté).Fig. 8 shows a partially cut-away view, for purposes of clarity, a circuit breaker (15) according to the invention. The circuit breaker (15) incorporating a magnetic subassembly according to the invention, comprises a modular housing (16) provided with fixing means (17), by example on a support type mounting rail (not shown).

    Le disjoncteur (15) présente un organe d'actionnement de type manette basculante (18), permettant de déplacer le contact mobile (8a) entre une position d'ouverture et de fermeture (cf. figure 8) de la liaison électrique avec le contact fixe (8).The circuit breaker (15) has a lever-type actuator tilting device (18) for moving the movable contact (8a) between a opening and closing position (see figure 8) of the electrical connection with the fixed contact (8).

    En cas de surintensité, le percuteur (6) agit sur une serrure mécanique (19) connue en tant que telle, laquelle déplace le contact mobile (8a) pour ouvrir la liaison électrique avec le contact fixe (8). Cette ouverture entraíne l'interruption de la circulation d'un courant électrique entre les bornes de connexion (10) du disjoncteur et ramène automatiquement la manette (18) dans la position correspondant à la séparation des contacts fixe (8) et mobile (8a), et ce grâce à la serrure mécanique (19).In case of overcurrent, the striker (6) acts on a mechanical lock (19) known as such, which moves the movable contact (8a) to open the electrical connection with the fixed contact (8). This opening leads to the interruption of the circulation of an electric current between the terminals of connection (10) of the circuit breaker and automatically returns the handle (18) in the position corresponding to the separation of the fixed contacts (8) and mobile (8a), thanks to the mechanical lock (19).

    La serrure mécanique (19) peut être actionnée pour interrompre la circulation de courant soit par le percuteur (6), soit par un bilame de déclenchement thermique incorporé dans le disjoncteur (15) (non représenté aux figures).The mechanical lock (19) can be actuated to interrupt the current flow either by the striker (6) or by a bimetallic strip thermal tripping incorporated in the circuit-breaker (15) (no represented in the figures).

    Claims (15)

    Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur, comportant : une bobine d'induction (2), un noyau magnétique mobile (3), un percuteur (6) se déplaçant avec le noyau mobile (3), un moyen de rappel élastique sollicité par le déplacement du percuteur (6), caractérisé en ce que le noyau mobile (3) est logé dans un support mobile (13), entraíné par le noyau mobile (3) et solidaire du percuteur (6).Magnetic subassembly for modular electrical equipment of the circuit-breaker type, comprising: an induction coil (2), a mobile magnetic core (3), a striker (6) moving with the movable core (3), an elastic return means biased by the movement of the firing pin (6), characterized in that the movable core (3) is housed in a movable support (13), driven by the movable core (3) and secured to the striker (6). Sous-ensemble magnétique selon la revendication 1, caractérisé en ce que le support mobile (13) et le percuteur (6) sont réalisés en une seule pièce.Magnetic subassembly according to claim 1, characterized in that the movable support (13) and the striker (6) are made in one piece. Sous-ensemble magnétique selon la revendication 2, caractérisé en ce que le support mobile (13) est une pièce cylindrique se terminant à l'une de ses extrémités par une tige constituant le percuteur (6).Magnetic subassembly according to claim 2, characterized in that the movable support (13) is a cylindrical piece terminating at one of its ends by a rod constituting the striker (6). Sous-ensemble magnétique selon la revendication 2 ou 3,caractérisé en ce que le support mobile (13) est en matière plastique.Magnetic subassembly according to claim 2 or 3, characterized in that the movable support (13) is made of plastics material. Sous-ensemble magnétique selon l'une des revendications 1 à 4, caractérisé en ce qu'il comporte un moyen de guidage en translation du percuteur (6).Magnetic subassembly according to one of claims 1 to 4, characterized in that it comprises a means for guiding the striker (6) in translation. Sous-ensemble magnétique selon la revendication 5, caractérisé en ce que le moyen de guidage comporte une ouverture (1b) ménagée dans une culasse (1), et traversée par le percuteur (6).Magnetic subassembly according to claim 5, characterized in that the guide means comprises an opening (1b) formed in a cylinder head (1), and through which the striker (6) passes. Sous-ensemble magnétique selon la revendication 5, caractérisé en ce que le moyen de guidage comporte une ouverture (1b), ménagée dans un noyau fixe (3 a) et traversée par le percuteur (6). Magnetic subassembly according to claim 5, characterized in that the guide means comprises an opening (1b), formed in a fixed core (3a) and traversed by the striker (6). Sous-ensemble magnétique selon les revendications 6 et 7, caractérisé en ce que le noyau fixe (3a) est solidaire de la culasse (1).Magnetic subassembly according to claims 6 and 7, characterized in that the fixed core (3a) is integral with the yoke (1). Sous-ensemble magnétique selon la revendication 8 ou 6, caractérisé en ce que la culasse (1) est réalisée en un matériau magnétique, constituant un élément magnétique complémentaire fixe.Magnetic subassembly according to claim 8 or 6, characterized in that the yoke (1) is made of a magnetic material constituting a fixed complementary magnetic element. Sous-ensemble magnétique selon la revendication 9, caractérisé en ce qu'une partie de la culasse (1), en regard d'une face polaire (5) du noyau magnétique mobile (3) constitue l'élément magnétique complémentaire fixe.Magnetic subassembly according to claim 9, characterized in that a part of the yoke (1) facing a polar face (5) of the movable magnetic core (3) constitutes the fixed complementary magnetic element. Sous-ensemble magnétique selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le moyen de rappel élastique (7a, 7b, 7c) est monté entre le support mobile (13) et la culasse magnétique (1).Magnetic subassembly according to any one of claims 1 to 10, characterized in that the elastic return means (7a, 7b, 7c) is mounted between the movable support (13) and the magnetic yoke (1). Sous-ensemble magnétique selon la revendication 11, caractérisé en ce que le moyen de rappel élastique est constitué d'une lame flexible (7a).Magnetic subassembly according to Claim 11, characterized in that the elastic return means consists of a flexible blade (7a). Sous-ensemble magnétique selon l'une quelconque des revendications 1 à 12, caractérisé en ce que la bobine d'induction (2) est une bobine à spires disjointes.Magnetic subassembly according to one of Claims 1 to 12, characterized in that the induction coil (2) is a coil with disjoint turns. Sous-ensemble magnétique selon l'une quelconque des revendications 1 à 13, caractérisé en ce que les extrémités (2a, 2b) de la bobine (2) d'induction s'écartent tangentiellement des spires de la bobine d'induction (2).Magnetic subassembly according to one of Claims 1 to 13, characterized in that the ends (2a, 2b) of the induction coil (2) extend tangentially from the turns of the induction coil (2). . Disjoncteur électrique comportant : un contact fixe (8) auquel est relié la première extrémité (2 a) de la bobine (2), une borne de connexion (10) au sous-ensemble, à laquelle est reliée la seconde extrémité (2b) de la bobine (2), un sous-ensemble magnétique conforme à l'une quelconque des revendications 1 à 14. Electric circuit breaker comprising: a fixed contact (8) to which the first end (2 a) of the coil (2) is connected, a connection terminal (10) to the subassembly to which the second end (2b) of the coil (2) is connected, a magnetic subassembly according to any of claims 1 to 14.
    EP04360055A 2003-07-22 2004-05-28 Improved magnetic sub-unit and circuit breaker comprising this sub-unit Expired - Lifetime EP1501112B1 (en)

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    FR0308949A FR2858106B1 (en) 2003-07-22 2003-07-22 IMPROVED MAGNETIC SUBASSEMBLY AND CIRCUIT BREAKER HAVING SUCH A MAGNETIC SUBASSEMBLY

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    EP0515292A1 (en) * 1991-05-21 1992-11-25 Schneider Electric Sa Electromagnetic trip device for a low current circuit breaker
    WO1999063564A1 (en) * 1998-06-03 1999-12-09 Hager Electro Optimised magnetic subassembly
    DE10126854A1 (en) * 2001-06-01 2002-12-19 Siemens Ag Magnetic yoke for electromagnetic trip of switching device has magnetic core cooperating with trip coil formed in one piece with base body of magnetic yoke

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    DE602004001817D1 (en) 2006-09-21
    DE602004001817T2 (en) 2007-08-16
    ATE336076T1 (en) 2006-09-15
    SI1501112T1 (en) 2007-02-28
    EP1501112B1 (en) 2006-08-09
    CN1320580C (en) 2007-06-06
    FR2858106B1 (en) 2005-09-23
    FR2858106A1 (en) 2005-01-28
    CN1577687A (en) 2005-02-09
    ES2271824T3 (en) 2007-04-16
    BRPI0402801A (en) 2005-05-24

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