EP1103989B1 - Direct-current electromagnet for switching apparatus - Google Patents

Direct-current electromagnet for switching apparatus Download PDF

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Publication number
EP1103989B1
EP1103989B1 EP20000403306 EP00403306A EP1103989B1 EP 1103989 B1 EP1103989 B1 EP 1103989B1 EP 20000403306 EP20000403306 EP 20000403306 EP 00403306 A EP00403306 A EP 00403306A EP 1103989 B1 EP1103989 B1 EP 1103989B1
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EP
European Patent Office
Prior art keywords
fact
electromagnet according
magnetic circuit
moving part
electromagnet
Prior art date
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EP20000403306
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German (de)
French (fr)
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EP1103989A3 (en
EP1103989A2 (en
Inventor
Pierre Boudet
Stéphane Delbaere
Philippe Fosse
Daniel Riffaud
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1623—Armatures having T-form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions

Definitions

  • the present invention relates to a DC electromagnet for a switch device such as a contactor or a contactor-breaker, comprising an induction coil cooperating with a magnetic circuit consisting of a fixed part and a movable part.
  • DC electromagnets are used in devices such as contactors or contactors.
  • the mobile magnetic circuit also called mobile armature
  • the fixed magnetic circuit (also called cylinder head) is often associated with at least one permanent magnet that polarizes the magnetic circuit and to obtain a low power consumption.
  • Each of the permanent magnets is mounted between an inner pole piece, relatively close to the coil, and an outer pole piece further away from the coil.
  • the mobile magnetic circuit is generally constituted, as in the document FR 2,586,324 , by a core on which are slipped polar plates. With this type of construction it is difficult to respect the coasts and the geometry.
  • the object of the invention is to provide a DC electromagnet whose magnetic circuit is obtained by a stack of cut sheets some of which have a low height and are assembled to each other.
  • This technology makes it possible to produce parts having a good geometric precision and in particular makes it possible to produce a mobile magnetic circuit with polar expansions joined to the core without discontinuity of flux.
  • the pieces of the fixed magnetic circuit may have a large thickness (this being formed by the sum of the thicknesses of the assembled sheets).
  • the movable part of the magnetic circuit is formed of cut and stacked sheets and is constituted by a movable armature with core and polar expansions, these having a larger surface area than the core section, the assembly being component of cut sheets in the shape of H and, to achieve the pole expansions, I-shaped cut sheets completing the branches of the core sheets.
  • the electromagnet according to the invention is also characterized by the fact that at least one part of the magnetic circuit is constituted by a stack of sheets cut and assembled to each other and having a variable height, in places weak, stronger at mechanical assembly means.
  • the cut sheets have a variable height included in some places between 2 and 5 mm.
  • the induction coil is wound on a coil support consisting of two parts assembled to each other so as to accommodate the mobile magnetic circuit.
  • control electromagnet marked E as a whole, is mounted in a switch device in which break-off poles P are arranged on current lines C1-C2 which can be connected by means of terminals B1-B2 to cables electric.
  • This control electromagnet E is of DC type and it is fed from terminals A1 and A2. It serves to actuate the poles in response to the excitation or the de-excitation of its coil. It is controlled by a control module M and a manual control member T.
  • the electromagnet E consists of a coil 4 and a magnetic circuit which channels the magnetic flux and consists of a fixed part and a movable part.
  • the fixed magnetic circuit or cylinder head consists of two inner pole pieces 31 and 32 which are relatively close to the coil and two outer pole pieces 11 and 12 which are further away laterally from the coil.
  • the mobile magnetic circuit 5 consists of a magnetic core 53 of generally parallelepipedal shape joining a first pole shoe 51 and a second pole shoe 52. This circuit 5 slides along the axis V-V 'in a bore of the support 8 of the coil.
  • the two pole shoes 51 and 52 extend perpendicularly to V-V 'and form plane pole faces 51a-51b on the one hand, 52a on the other hand. They have the shape of rectangular plates, the surface of the openings being greater than the section of the core 53.
  • the moving armature 5 is subjected to a return spring 6 which tends to move it to a rest position.
  • the two outer pole pieces 11 and 12 of the fixed magnetic circuit each have a U-shaped profile and are mounted in opposition and spaced apart from each other so as to provide a space in which the coil 4 and its support are housed. 8, the inner pole pieces 31 and 32, the magnets 21-22 and the movable armature 5.
  • Each outer pole piece 11 or 12 has a core extending parallel to the axis V-V 'and two wings extending perpendicularly to this axis V-V'.
  • the inner pole pieces 31-32 are flat and extend parallel to the axis V-V '.
  • the electromagnet E is polarized and comprises two permanent magnets 21 and 22 each having a parallelepipedal shape and each inserted between an outer pole piece 11 or 12 and an inner pole piece 31 or 32 respectively.
  • the face facing the axis V-V 'of each core of an outer pole piece 11 or 12 is adjacent to a pole face of the permanent magnet 21 or 22 respectively.
  • the other polar face of each of the magnets 21 or 22, facing the axis V-V ', is adjacent to the inner pole piece 31 or 32 respectively.
  • the polar expansion 51 of the armature 5 is housed in two gaps each extending between the end face of one of the pole pieces 31 or 32 and the folded wing of the adjacent outer pole piece 11 or 12. It moves in this gap of a first position against the pole pieces 31-32, at a second position located against the cylinder head 11-12.
  • the other expansion 52 of the armature 5 extends outside the folded wings of the outer pole pieces 11 or 12.
  • Each of the outer pole pieces 11 or 12 is made from a stack of cut sheets 111 or 121 in the shape of a U.
  • the cut sheets are joined by rivets 112 or 122 and by welding beads such as 113 which extend over the entire thickness of the pile.
  • the mobile magnetic circuit 5 is obtained by a stack of H-shaped cut sheets 531 and I-shaped cut sheets 511, 521, the latter completing the branches of the core plates 531 so as to produce the pole shoes 51, 52
  • the pole shoes 51 and 52 are thus made by the branches of the H 531 sheets and by the complementary I-shaped sheets 511 or 521.
  • the sheets 531, 511 and 521 are joined to each other by rivets 532, 512, 522 and welding beads 523 which extend over the entire thickness of the sheets.
  • the welding beads can be made by laser.
  • the cut sheets 111, 121, 531, 521, 511 have a variable height H which is in some places between 2 and 5 mm. H is the distance between the edges measured in the plane of the cut sheets. The height is higher at the rivets 112, 122, 512, 522.
  • the parts 11 and 12 have beads at the assembly rivets 112, 122, 512, 522.
  • the coil 4 is wound on a coil support 8 consisting of two parts 8a, 8b assembled to each other so as to form a central hub 83 in which is housed the central core 53 of the mobile magnetic circuit 5. These two Parts 8a and 8b are joined along a joint plane passing through V-V '.
  • the hub 83 is connected to two cages 84 and 85 in which the pole shoes 51 and 52 move.
  • the moving armature 5 is provided with two guide pins 71 and 72 which pass through the pole shoes 51 and 52 and slide, in a plane passing through V-V ', into the guide slots 81 and 82 of the coil support 8.
  • the moving armature 5 actuates, when it is displaced in translation, a lever L pivoted about an axis O and which then actuates the poles P.
  • One of the pole shoes 52 is provided laterally with fingers 9a for actuating the pivoting lever L for pole operation when the moving armature 5 is biased.
  • This polar expansion is also provided at the front of a finger 9b for actuating additives mounting on the switch device.
  • This control finger 9a of the lever and this control finger 9b additives are formed on a clip 9 which is fixed in front of the pole shoe 52.
  • the finger 9b of the additives passes through an opening of the housing and is moved in translation parallel to V-V '.
  • the moving armature 5 When the coil 4 is energized, the moving armature 5 is biased towards the working position and a closed or substantially closed magnetic field passing through the core 53, the expansion 52, the outer pole pieces 11-12, the expansion 51 is created. This magnetic field does not pass through permanent magnets 21-22.
  • the return spring moves the moving armature 5 to a rest position in which the shoe 51 is in contact with the pole pieces 31-32 so that the magnetic circuit closes through the magnets permanent 21-22.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Relay Circuits (AREA)

Description

La présente invention concerne un électro-aimant à courant continu pour appareil interrupteur tel que contacteur ou contacteur-disjoncteur, comprenant une bobine d'induction coopérant avec un circuit magnétique constitué d'une partie fixe et d'une partie mobile.The present invention relates to a DC electromagnet for a switch device such as a contactor or a contactor-breaker, comprising an induction coil cooperating with a magnetic circuit consisting of a fixed part and a movable part.

On utilise des électro-aimants à courant continu dans des appareils tels que contacteurs ou contacteurs-disjoncteurs. Le circuit magnétique mobile (appelé aussi armature mobile) se déplace en translation selon l'axe dans la bobine et porte à chaque extrémité des épanouissements polaires.DC electromagnets are used in devices such as contactors or contactors. The mobile magnetic circuit (also called mobile armature) moves in translation along the axis in the coil and carries at each end of the pole shoes.

Au circuit magnétique fixe (appelé aussi culasse) est souvent associé au moins un aimant permanent qui permet de polariser le circuit magnétique et d'obtenir une basse consommation. Chacun des aimants permanents est monté entre une pièce polaire intérieure, relativement proche de la bobine, et une pièce polaire extérieure, plus éloignée latéralement de la bobine.The fixed magnetic circuit (also called cylinder head) is often associated with at least one permanent magnet that polarizes the magnetic circuit and to obtain a low power consumption. Each of the permanent magnets is mounted between an inner pole piece, relatively close to the coil, and an outer pole piece further away from the coil.

Le circuit magnétique mobile est généralement constitué, comme dans le document FR 2 586 324 , par un noyau sur lequel sont emmanchées des plaques de polaires. Avec ce type de construction il est difficile de respecter les côtes et la géométrie.The mobile magnetic circuit is generally constituted, as in the document FR 2,586,324 , by a core on which are slipped polar plates. With this type of construction it is difficult to respect the coasts and the geometry.

Les documents JP7279852 et US3,058,039 décrivent notamment des circuit magnétiques réalisés par empilage de tôles découpées.The documents JP7279852 and US3,058,039 describe in particular magnetic circuits made by stacking cut sheets.

Le but de l'invention est de fournir un électro-aimant à courant continu dont le circuit magnétique est obtenu par un empilage de tôles découpées dont certaines ont une faible hauteur et sont assemblées les unes aux autres. Cette technologie permet de réaliser des pièces ayant une bonne précision géométrique et permet en particulier de réaliser un circuit magnétique mobile à épanouissements polaires réunis au noyau sans discontinuité de flux. Les pièces du circuit magnétique fixe peuvent avoir une forte épaisseur (celle-ci étant formée de la somme des épaisseurs des tôles assemblées).The object of the invention is to provide a DC electromagnet whose magnetic circuit is obtained by a stack of cut sheets some of which have a low height and are assembled to each other. This technology makes it possible to produce parts having a good geometric precision and in particular makes it possible to produce a mobile magnetic circuit with polar expansions joined to the core without discontinuity of flux. The pieces of the fixed magnetic circuit may have a large thickness (this being formed by the sum of the thicknesses of the assembled sheets).

Selon l'invention, la partie mobile du circuit magnétique est formée de tôles découpées et empilées et est constituée d'une armature mobile à noyau et épanouissements polaires, ceux-ci ayant une surface plus importante que la section du noyau, l'assemblage se composant de tôles découpées en forme de H et, pour réaliser les épanouissements polaires, de tôles découpées en forme de I complétant les branches des tôles du noyau.According to the invention, the movable part of the magnetic circuit is formed of cut and stacked sheets and is constituted by a movable armature with core and polar expansions, these having a larger surface area than the core section, the assembly being component of cut sheets in the shape of H and, to achieve the pole expansions, I-shaped cut sheets completing the branches of the core sheets.

L'électro-aimant selon l'invention est également caractérisé par le fait que l'une au moins des parties du circuit magnétique est constituée par un empilage de tôles découpées et assemblées les unes aux autres et présentant une hauteur variable, par endroits faible, plus forte au niveau de moyens d'assemblage mécanique.The electromagnet according to the invention is also characterized by the fact that at least one part of the magnetic circuit is constituted by a stack of sheets cut and assembled to each other and having a variable height, in places weak, stronger at mechanical assembly means.

Selon une caractéristique, les tôles découpées ont une hauteur variable comprise à certains endroits entre 2 et 5 mm.According to one characteristic, the cut sheets have a variable height included in some places between 2 and 5 mm.

Selon une autre caractéristique, la bobine d'induction est enroulée sur un support de bobine constitué de deux parties assemblées l'une à l'autre de manière à loger le circuit magnétique mobile.According to another characteristic, the induction coil is wound on a coil support consisting of two parts assembled to each other so as to accommodate the mobile magnetic circuit.

L'invention va maintenant être décrite avec plus de détail en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés sur lesquels :

  • la figure 1 est un schéma d'appareil interrupteur équipé d'un électroaimant selon l'invention ;
  • la figure 2 est une vue en perspective de l'électro-aimant selon l'invention ;
  • la figure 3 est une vue en perspective éclatée de l'électro-aimant ;
  • la figure 4 est une vue de détail des parties fixes et des parties mobiles de l'électro-aimant, le support de bobine et la bobine n'étant pas représentés ;
  • la figure 5 est une vue de détail de la construction d'une pièce polaire extérieure ;
  • la figure 6 est une vue de détail de la construction de l'armature mobile.
The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the appended drawings in which:
  • the figure 1 is a switch device diagram equipped with an electromagnet according to the invention;
  • the figure 2 is a perspective view of the electromagnet according to the invention;
  • the figure 3 is an exploded perspective view of the electromagnet;
  • the figure 4 is a detail view of the stationary parts and moving parts of the electromagnet, the coil carrier and the coil not being shown;
  • the figure 5 is a detail view of the construction of an outer pole piece;
  • the figure 6 is a detail view of the construction of the mobile armature.

En se référant à la figure 1, l'électro-aimant de commande, repéré E dans son ensemble, est monté dans un appareil interrupteur dans lequel sont agencés des pôles de coupure P sur des lignes de courant C1-C2 pouvant se raccorder par des bornes B1-B2 à des câbles électriques. Cet électro-aimant de commande E est du type à courant continu et il est alimenté à partir de bornes A1 et A2. Il sert à actionner les pôles en réponse à l'excitation ou à la désexcitation de sa bobine. Il est commandé par un module de commande M et un organe de commande manuelle T.Referring to the figure 1 the control electromagnet, marked E as a whole, is mounted in a switch device in which break-off poles P are arranged on current lines C1-C2 which can be connected by means of terminals B1-B2 to cables electric. This control electromagnet E is of DC type and it is fed from terminals A1 and A2. It serves to actuate the poles in response to the excitation or the de-excitation of its coil. It is controlled by a control module M and a manual control member T.

L'électro-aimant E se compose d'une bobine 4 et d'un circuit magnétique qui canalise le flux magnétique et est constitué d'une partie fixe et d'une partie mobile.The electromagnet E consists of a coil 4 and a magnetic circuit which channels the magnetic flux and consists of a fixed part and a movable part.

Le circuit magnétique fixe ou culasse est constitué de deux pièces polaires intérieures 31 et 32 qui sont relativement proches de la bobine et de deux pièces polaires extérieures 11 et 12 qui sont plus éloignées latéralement de la bobine.The fixed magnetic circuit or cylinder head consists of two inner pole pieces 31 and 32 which are relatively close to the coil and two outer pole pieces 11 and 12 which are further away laterally from the coil.

Le circuit magnétique mobile 5 se compose d'un noyau magnétique 53 de forme générale parallélépipédique réunissant un premier épanouissement polaire 51 et un second épanouissement polaire 52. Ce circuit 5 coulisse selon l'axe V-V' dans un alésage du support 8 de la bobine. Les deux épanouissements polaires 51 et 52 s'étendent perpendiculairement à V-V' et forment des faces polaires planes 51a-51b d'une part, 52a d'autre part. Ils ont la forme de plaques rectangulaires, la surface des épanouissements étant supérieure à la section du noyau 53.The mobile magnetic circuit 5 consists of a magnetic core 53 of generally parallelepipedal shape joining a first pole shoe 51 and a second pole shoe 52. This circuit 5 slides along the axis V-V 'in a bore of the support 8 of the coil. The two pole shoes 51 and 52 extend perpendicularly to V-V 'and form plane pole faces 51a-51b on the one hand, 52a on the other hand. They have the shape of rectangular plates, the surface of the openings being greater than the section of the core 53.

L'armature mobile 5 est soumise à un ressort de rappel 6 qui tend à la déplacer vers une position de repos.The moving armature 5 is subjected to a return spring 6 which tends to move it to a rest position.

Les deux pièces polaires extérieures 11 et 12 du circuit magnétique fixe ont chacune une forme de profil en U et sont montées en opposition et espacées l'une de l'autre de manière à ménager un espace dans lequel se logent la bobine 4 et son support 8, les pièces polaires intérieures 31 et 32, les aimants 21-22 et l'armature mobile 5.The two outer pole pieces 11 and 12 of the fixed magnetic circuit each have a U-shaped profile and are mounted in opposition and spaced apart from each other so as to provide a space in which the coil 4 and its support are housed. 8, the inner pole pieces 31 and 32, the magnets 21-22 and the movable armature 5.

Chaque pièce polaire extérieure 11 ou 12 présente une âme s'étendant parallèlement à l'axe V-V' et deux ailes s'étendant perpendiculairement à cet axe V-V'. Les pièces polaires intérieures 31-32 sont planes et s'étendent parallèlement à l'axe V-V'.Each outer pole piece 11 or 12 has a core extending parallel to the axis V-V 'and two wings extending perpendicularly to this axis V-V'. The inner pole pieces 31-32 are flat and extend parallel to the axis V-V '.

L'électro-aimant E est polarisé et comporte deux aimants permanents 21 et 22 ayant chacun une forme parallélépipédique et insérés chacun entre une pièce polaire extérieure 11 ou 12 et une pièce polaire intérieure 31 ou 32 respectivement. La face tournée vers l'axe V-V' de chaque âme d'une pièce polaire extérieure 11 ou 12 est adjacente à une face polaire de l'aimant permanent 21 ou 22 respectivement. L'autre face polaire de chacun des aimants 21 ou 22, tournée vers l'axe V-V', est adjacente à la pièce polaire intérieure 31 ou 32 respectivement.The electromagnet E is polarized and comprises two permanent magnets 21 and 22 each having a parallelepipedal shape and each inserted between an outer pole piece 11 or 12 and an inner pole piece 31 or 32 respectively. The face facing the axis V-V 'of each core of an outer pole piece 11 or 12 is adjacent to a pole face of the permanent magnet 21 or 22 respectively. The other polar face of each of the magnets 21 or 22, facing the axis V-V ', is adjacent to the inner pole piece 31 or 32 respectively.

L'épanouissement polaire 51 de l'armature 5 se loge dans deux entrefers s'étendant chacun entre la face d'extrémité de l'une des pièces polaires 31 ou 32 et l'aile repliée de la pièce polaire extérieure adjacente 11 ou 12. Il se déplace dans cet entrefer d'une première position située contre les pièces polaires 31-32, à une seconde position située contre la culasse 11-12. L'autre épanouissement 52 de l'armature 5 s'étend à l'extérieur des ailes repliées des pièces polaires extérieures 11 ou 12.The polar expansion 51 of the armature 5 is housed in two gaps each extending between the end face of one of the pole pieces 31 or 32 and the folded wing of the adjacent outer pole piece 11 or 12. It moves in this gap of a first position against the pole pieces 31-32, at a second position located against the cylinder head 11-12. The other expansion 52 of the armature 5 extends outside the folded wings of the outer pole pieces 11 or 12.

Chacune des pièces polaires extérieures 11 ou 12 est réalisée à partir d'un empilage de tôles découpées 111 ou 121 en forme de U. Les tôles découpées sont réunies par des rivetages 112 ou 122 et par des cordons de soudure tels que 113 qui s'étendent sur toute l'épaisseur de l'empillage.Each of the outer pole pieces 11 or 12 is made from a stack of cut sheets 111 or 121 in the shape of a U. The cut sheets are joined by rivets 112 or 122 and by welding beads such as 113 which extend over the entire thickness of the pile.

Le circuit magnétique mobile 5 est obtenu par un empilage de tôles découpées 531 en forme de H et de tôles découpées 511, 521 en forme de I, ces dernières complétant les branches des tôles 531 du noyau de manière à réaliser les épanouissements polaires 51, 52. Les épanouissements polaires 51 et 52 sont donc réalisés par les branches des tôles en H 531 et par les tôles complémentaires 511 ou 521 en forme de I.The mobile magnetic circuit 5 is obtained by a stack of H-shaped cut sheets 531 and I-shaped cut sheets 511, 521, the latter completing the branches of the core plates 531 so as to produce the pole shoes 51, 52 The pole shoes 51 and 52 are thus made by the branches of the H 531 sheets and by the complementary I-shaped sheets 511 or 521.

Les tôles 531, 511 et 521 sont réunies les unes aux autres par des rivetages 532, 512, 522 et par des cordons de soudure 523 qui s'étendent sur toute l'épaisseur des tôles.The sheets 531, 511 and 521 are joined to each other by rivets 532, 512, 522 and welding beads 523 which extend over the entire thickness of the sheets.

Les cordons de soudure peuvent être réalisés au laser.The welding beads can be made by laser.

Les tôles découpées 111, 121, 531, 521, 511 ont une hauteur variable H qui est comprise à certains endroits entre 2 et 5 mm. On entend par hauteur H la distance entre les bords mesurée dans le plan des tôles découpées. La hauteur est plus forte au niveau des rivetages 112, 122, 512, 522. Les pièces 11 et 12 présentent des bourrelets au niveau des rivets d'assemblage 112, 122, 512, 522.The cut sheets 111, 121, 531, 521, 511 have a variable height H which is in some places between 2 and 5 mm. H is the distance between the edges measured in the plane of the cut sheets. The height is higher at the rivets 112, 122, 512, 522. The parts 11 and 12 have beads at the assembly rivets 112, 122, 512, 522.

La bobine 4 est enroulée sur un support de bobine 8 constitué de deux parties 8a, 8b assemblées l'une à l'autre de manière à former un moyeu central 83 dans lequel se loge le noyau central 53 du circuit magnétique mobile 5. Ces deux parties 8a et 8b sont réunies selon un plan de joint passant par V-V'. Le moyeu 83 est raccordé à deux cages 84 et 85 dans lesquelles se déplacent les épanouissements polaires 51 et 52.The coil 4 is wound on a coil support 8 consisting of two parts 8a, 8b assembled to each other so as to form a central hub 83 in which is housed the central core 53 of the mobile magnetic circuit 5. These two Parts 8a and 8b are joined along a joint plane passing through V-V '. The hub 83 is connected to two cages 84 and 85 in which the pole shoes 51 and 52 move.

L'armature mobile 5 est munie de deux axes de guidage 71 et 72 qui traversent les épanouissements polaires 51 et 52 et coulissent, dans un plan passant par V-V', dans les lumières de guidage 81 et 82 du support de bobine 8.The moving armature 5 is provided with two guide pins 71 and 72 which pass through the pole shoes 51 and 52 and slide, in a plane passing through V-V ', into the guide slots 81 and 82 of the coil support 8.

L'armature mobile 5 actionne, lorsqu'elle est déplacée en translation, un levier L monté pivotant autour d'un axe O et qui actionne alors les pôles P.The moving armature 5 actuates, when it is displaced in translation, a lever L pivoted about an axis O and which then actuates the poles P.

L'un des épanouissements polaires 52 est pourvu latéralement de doigts 9a servant à actionner le levier pivotant L de manoeuvre de pôles lorsque l'armature mobile 5 est sollicitée. Cet épanouissement polaire est par ailleurs pourvu à l'avant d'un doigt 9b servant à actionner des additifs se montant sur l'appareil interrupteur. Ce doigt 9a de commande du levier et ce doigt de commande 9b des additifs sont ménagés sur une agrafe 9 qui se fixe à l'avant de l'épanouissement polaire 52. Le doigt 9b des additifs passe par une ouverture du boîtier et est déplacé en translation parallèlement à V-V'.One of the pole shoes 52 is provided laterally with fingers 9a for actuating the pivoting lever L for pole operation when the moving armature 5 is biased. This polar expansion is also provided at the front of a finger 9b for actuating additives mounting on the switch device. This control finger 9a of the lever and this control finger 9b additives are formed on a clip 9 which is fixed in front of the pole shoe 52. The finger 9b of the additives passes through an opening of the housing and is moved in translation parallel to V-V '.

Le fonctionnement de l'électro-aimant va maintenant être décrit.The operation of the electromagnet will now be described.

Lorsque la bobine 4 est excitée, l'armature mobile 5 est sollicitée vers la position de travail et un champ magnétique fermé ou sensiblement fermé passant par le noyau 53, l'épanouissement 52, les pièces polaires extérieures 11-12, l'épanouissement 51 est créé. Ce champ magnétique ne passe pas par les aimants permanents 21-22.When the coil 4 is energized, the moving armature 5 is biased towards the working position and a closed or substantially closed magnetic field passing through the core 53, the expansion 52, the outer pole pieces 11-12, the expansion 51 is created. This magnetic field does not pass through permanent magnets 21-22.

Lorsque la bobine 4 est désexcitée, le ressort de rappel déplace l'armature mobile 5 vers une position de repos dans laquelle l'épanouissement 51 est en contact avec les pièces polaires 31-32 de sorte que le circuit magnétique se referme à travers les aimants permanents 21-22.When the coil 4 is de-energized, the return spring moves the moving armature 5 to a rest position in which the shoe 51 is in contact with the pole pieces 31-32 so that the magnetic circuit closes through the magnets permanent 21-22.

Claims (12)

  1. Direct current electromagnet for switch appliance, comprising an induction coil (4) cooperating with a magnetic circuit comprising a fixed part (11, 12) and a moving part (5), the moving part (5) of the magnetic circuit comprising a stack of cut plates (531, 511, 512) joined to each other, characterized by the fact that the moving part (5) comprises an armature having a core and pole shoes (51, 52), the pole shoes having a greater surface area than the section of the core (53) and by the fact that its stack consists of H-shaped cut plates (531) and I-shaped cut plates (511, 521) complementing, to produce the pole shoes (51, 52), the branches of the plates (531) of the core.
  2. Electromagnet according to Claim 1, characterized by the fact that at least one of the parts of the magnetic circuit has a variable height, low in places and higher level with mechanical joining means (112, 122, 512, 522).
  3. Electromagnet according to Claim 2, characterized by the fact that the plates (111, 121, 511, 521) have a variable height in certain places of between 2 and 5 mm.
  4. Electromagnet according to Claim 2 or 3, characterized by the fact that the fixed part of the magnetic circuit comprises pole pieces (11 and 12) produced from a stack of U-shaped cut plates (111, 121).
  5. Electromagnet according to one of Claims 2 to 4, characterized in that at least one of the pole pieces (11, 12) of the fixed part of the magnetic circuit has beads or increased heights level with the joining means (112, 122).
  6. Electromagnet according to Claim 1, characterized by the fact that the coil (4) is wound on a coil support (8) comprising two parts (8a, 8b) joined to each other so as to house the moving part (5) of the magnetic circuit.
  7. Electromagnet according to any one of the preceding claims, characterized by the fact that the cut plates forming the moving part (5) and the fixed part (11, 12) of the magnetic circuit are joined to each other by rivets and by weld beads.
  8. Electromagnet according to any one of Claims 1 to 7, characterized by the fact that the moving part (5) is provided in the pole shoes (51 and 52) with guide spindles (71 and 72) which slide in guide slots (81 and 82) in the coil support (8).
  9. Electromagnet according to any one of the preceding claims, characterized by the fact that the moving part (5) operates a lever (L) fitted so as to swivel and operating poles (P) of the electrical switch appliance.
  10. Electromagnet according to Claim 9, characterized by the fact that one of the pole shoes (52) is provided laterally with at least one finger (9a) used to operate the swivelling lever (L) to operate poles when the moving part (5) is stressed.
  11. Electromagnet according to any one of Claims 1 to 10, characterized by the fact that one of the pole shoes (52) is provided at the front with a finger (9b) used to operate add-ons being fitted on the switch appliance.
  12. Electromagnet according to Claims 10 and 11,
    characterized by the fact that the finger (9a) controlling the lever and the finger (9b) controlling the add-ons are formed on a clamp (9) which is fixed to the front of the pole shoe (52).
EP20000403306 1999-11-29 2000-11-23 Direct-current electromagnet for switching apparatus Expired - Lifetime EP1103989B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9915174 1999-11-29
FR9915174A FR2801721B1 (en) 1999-11-29 1999-11-29 DIRECT CURRENT ELECTROMAGNET FOR SWITCHING APPARATUS

Publications (3)

Publication Number Publication Date
EP1103989A2 EP1103989A2 (en) 2001-05-30
EP1103989A3 EP1103989A3 (en) 2002-05-08
EP1103989B1 true EP1103989B1 (en) 2008-03-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000403306 Expired - Lifetime EP1103989B1 (en) 1999-11-29 2000-11-23 Direct-current electromagnet for switching apparatus

Country Status (4)

Country Link
EP (1) EP1103989B1 (en)
DE (1) DE60038274T2 (en)
ES (1) ES2300250T3 (en)
FR (1) FR2801721B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146899A1 (en) * 2001-09-24 2003-04-10 Abb Patent Gmbh Electromagnetic actuator, in particular electromagnetic drive for a switching device
KR200451951Y1 (en) * 2008-12-31 2011-01-25 엘에스산전 주식회사 Monostable permenent magnetic actuator using laminated steel core

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058039A (en) * 1957-06-24 1962-10-09 Gen Controls Co Laminated magnetic structure, and process for making same
EP0174239B1 (en) * 1984-08-20 1988-06-01 Telemecanique Polarised electromagnet presenting a symmetric disposition
EP0216943B1 (en) * 1985-08-06 1989-11-02 Ibm Deutschland Gmbh Electromagnetic actuator, in particular for driving print hammers
JP3171751B2 (en) * 1994-04-05 2001-06-04 東芝テック株式会社 Diaphragm type electromagnetic pump
JPH08138509A (en) * 1994-11-02 1996-05-31 Fuji Electric Co Ltd Dc electromagnetic contactor

Also Published As

Publication number Publication date
DE60038274D1 (en) 2008-04-24
FR2801721B1 (en) 2002-01-18
DE60038274T2 (en) 2009-03-19
EP1103989A3 (en) 2002-05-08
EP1103989A2 (en) 2001-05-30
FR2801721A1 (en) 2001-06-01
ES2300250T3 (en) 2008-06-16

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