EP0827162A1 - Electromagnet with immersed core used for instance in a remote control interrupter - Google Patents

Electromagnet with immersed core used for instance in a remote control interrupter Download PDF

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Publication number
EP0827162A1
EP0827162A1 EP97410094A EP97410094A EP0827162A1 EP 0827162 A1 EP0827162 A1 EP 0827162A1 EP 97410094 A EP97410094 A EP 97410094A EP 97410094 A EP97410094 A EP 97410094A EP 0827162 A1 EP0827162 A1 EP 0827162A1
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EP
European Patent Office
Prior art keywords
coil
electromagnet
electromagnet according
frame
carcass
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.)
Withdrawn
Application number
EP97410094A
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German (de)
French (fr)
Inventor
Joel Fagnoul
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Schneider Electric Industries SAS
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Schneider Electric SE
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Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0827162A1 publication Critical patent/EP0827162A1/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • 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
    • 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

Definitions

  • the present invention relates to an electromagnet of the reluctant type with plunging core, in particular for a remote control switch or the like, this electromagnet comprising a coil activation mounted on a carcass provided with an axial guide tube in which is arranged a plunging core arranged to slide in this tube under the effect of forces electromagnetic induced by said coil when it is traversed by a current electric and an armature arranged to at least partially surround said coil and for channel the magnetic field generated by it.
  • electromagnets of this type used for example in remote control switches remotely control, in particular by telephone, several switches simultaneously, or in office machines, machine tools, automatic controls or setting, coin dispensers, etc.
  • These known electromagnets consist of different parts assembled according to a relatively complex process, requiring several manual or semi-automatic interventions, moreover expensive.
  • the frame magnetic and the coil carcass are made up of several parts assembled by crimping, which requires relatively expensive interventions.
  • this guy assembly does not offer all the guarantees of quality and safety required.
  • the movement of the core can be hampered by the armature and thus generates noise pollution. Of even the magnetic flux can be disturbed by cuts in the armature magnetic in particular at the junctions between different constituent parts.
  • the object of the present invention is to overcome these drawbacks by providing an electromagnet simple, efficient and reliable construction, requiring only standard tools or not tooling at all.
  • this embodiment is designed not to disturb the lines of magnetic field and to allow rapid sliding, unhindered and does not generate no noise pollution on contact with an obstacle placed in the path of the core plunging, during its displacement.
  • an electromagnet as defined in the preamble and characterized in that said coil carcass consists of at least two parallel support plates connected therebetween by said guide tube, and in that said armature comprises at least one housing consisting of two substantially symmetrical elements and arranged to fit on said carcass in a plane parallel to the magnetic field lines generated by the coil in this place, so as not to disturb the magnetic flux.
  • the support plates of said carcass comprise each a central opening whose shape and dimensions correspond to the shape and to the external dimensions of said guide tube, these support plates being mounted parallel to each other on said guide tube, so that a section of the latter protrudes the support plates on either side of the coil carcass.
  • Said support plates advantageously have a quadrangular section.
  • the guide tube may have a quadrangular section.
  • the plunging core also has a quadrangular section whose external dimensions are substantially equal to the internal dimensions of the guide tube, such that said plunging core slides with little play inside this tube.
  • the guide tube can also have a circular section.
  • the plunging core also has a circular section whose outside diameter is substantially equal to inner diameter of the guide tube, so that said plunging core slides with a small clearance inside this tube.
  • the two symmetrical elements which constitute the housing of said frame each comprise at least three walls arranged in a U, a rear wall and two side walls parallel to each other, the side walls each comprising a central clearance whose shape and dimensions correspond substantially to half the guide tube.
  • the clearances of the symmetrical elements have a shape quadrangular or a semi-circular shape.
  • the parallel walls of the symmetrical elements are arranged to cover, by substantially superimposing half of the support plates when said frame is mounted on said coil carcass.
  • the support plates include fixing means two symmetrical elements which constitute said housing of said frame.
  • these fixing means comprise at least two assembly members protuberances integral with the support plates, diametrically opposite and arranged for engage in suitable housing provided in the symmetrical elements forming the case of said frame.
  • the two symmetrical elements forming the housing of the frame is cut flat in a sheet of soft iron and folded in at least two parallel folding axes.
  • the two symmetrical elements forming the housing of the frame preferably have a space which separates them, this space being arranged in a median plane of symmetry of the electromagnet.
  • the carcass of the coil is made of a material electrically insulating and the two symmetrical elements forming the housing of said frame are electrically independent and have electrical connection terminals said coil.
  • the electromagnet shown 10 mainly comprises a coil casing 11 which supports a coil 12, a frame 13 and a plunging core 14.
  • the coil carcass consists of a guide tube 15 inside which is housed the plunging core 14 and two support plates 16 and 17, mutually parallel and mounted on the guide tube 15.
  • the frame 13 comprises a housing made of two symmetrical elements 13a and 13b which are arranged to fit onto said carcass 11 according to a plane of symmetry median M of the electromagnet.
  • the support plates 16 and 17 of the carcass 11 each have a central opening whose shape and dimensions correspond substantially to the shape and dimensions outside of the guide tube 15. In this way two end sections of the guide tube guide 15 are engaged in the central openings of the support plates 16 and 17, which are therefore mounted in a quick, efficient and stable manner, parallel to each other.
  • the coil 12 consists of a winding made on the guide tube 15 and delimited on the one hand and on the other by the support plates 16 and 17.
  • the guide tube 15 has a quadrangular cross section. he the same is true of the plunging core 14.
  • the dimensions of the latter are such that it can slide, practically without play, inside the guide tube 15. Therefore, no obstacle does not hinder its displacement induced by the electromagnetic forces generated by the coil 12 when powered by an electric current, so that the displacement of the core diving takes place without noise.
  • the moving part is attracted towards an equilibrium position in the middle of the electromagnet.
  • the housing which constitutes the frame 13 consists of two identical symmetrical elements 13a and 13b comprising three walls arranged in a U shape. These three walls comprise a rear wall 20 and two side walls 21 and 22.
  • the spacing of the side walls 21 and 22, parallel to each other, is substantially equal to or slightly greater than the spacing of the plates support 16 and 17.
  • the two side walls 21 and 22 each have a clearance 23 and 24, the dimensions of which correspond substantially to half the profile of the guide tube 15 in such a way that the symmetrical elements 13a and 13b can be mounted on the carcass 11 of the coil 12, as shown in FIG.
  • the two symmetrical elements 13a and 13b provide between them a space 25 which separates them, this space being arranged in a plane parallel to the magnetic field lines generated here by the coil. This plane corresponds to the median plane of symmetry M of the electromagnet.
  • FIGS. 3 and 4 illustrate an embodiment very close to that described above, but in which the plunging core 34 has a cylindrical shape and the guide tube 35 has a circular section, arranged so that the plunging core can slide inside this tube, practically without play.
  • the clearances 43 and 44 from the side walls 41 and 42 of the symmetrical elements 33a and 33b, which constitute the housing of the frame 33 of the electromagnet 30, have a semi-circular shape.
  • the other components of the electromagnet 30 are identical to those which correspond to them of the electromagnet 10.
  • the coil 32 is substantially identical to the coil 12
  • the parallel support plates of the carcass 31, designated by the references 36 and 37 are substantially identical to the support plates 16 and 17 of the electromagnet 10.
  • the central opening which allows the passage of the sections end of the guide tube 35 is circular and no longer quadrangular.
  • FIGS. 5 and 6 illustrate an alternative embodiment of the electromagnet described with reference to FIGS. 1 and 2.
  • the carcass 51 of this electromagnet 50 comprises two support plates 56 and 57 of the coil (not shown), which are equipped with means for fixing the two elements symmetrical 53a and 53b constituting the housing of the frame 53.
  • These fixing means are made up of protruding assembly members 60 arranged at the four angles of each of the support plates 56 and 57.
  • These protruding assembly members are arranged to engage in appropriate housings 61 provided in the two symmetrical elements 53a and 53b, at the corners of their rear wall.
  • the protruding assembly members 60 have a wedge shape and are designed to engage by wise clip in the corresponding housings. This method of assembly is particularly efficient and rapid. It is made possible by the elasticity of the support plates 56 and 57 which deform slightly when put in place symmetrical elements 53a and 53b of the frame housing.
  • FIG. 7 represents one of the electromagnets previously described, seen in plan.
  • the input and output terminals 70 and 71 respectively of the coil 12 are mounted directly on the two symmetrical elements 13a and 13b of the armature 13 of the electromagnet 10.
  • the two support plates 16 and 17 as well as the guide tube 15 must be made of an insulating material and the symmetrical elements 13a and 13b which constitute the housing of the frame 13 must be made in a way precise enough so that the space 25 between them is large enough to avoid a short circuit at the coil.
  • the two symmetrical elements which constitute the housing of the frame 13, 33 and 53 have three symmetrical U-shaped walls, a rear wall and two side walls parallel to each other.
  • the reinforcement could be more enveloping and have a rear wall and two pairs of parallel side walls two to two each of which is adjacent to one side of the rear wall.
  • the manufacturing of these elements could be substantially the same as that described above, namely by cutting of a sheet of sheet iron and folding the side walls around four axes of folding corresponding to the four sides of the rear wall.
  • the protruding assembly members 60 could have shapes different from those described. These members arranged at the four corners of the support plates could be replaced by two members arranged substantially in the middle of two opposite sides of said parallel support plates.
  • the plunging core could for example have a prismatic shape or else consist of a stack of several sheets.

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

Abstract

The relay (10) includes a support (11) with a coil (112), an electrode (13) and a mobile core (14). The coil support has a guiding tube (15), which receives the core, and two parallel plates (16,17). The electrode is made up of two symmetrical components (13a,b) which are fixed on the coil support to define a box.

Description

La présente invention concerne un électroaimant du type réluctant à noyau plongeant, notamment pour un télérupteur ou similaire, cet électroaimant comportant une bobine d'activation montée sur une carcasse pourvue d'un tube de guidage axial dans lequel est disposé un noyau plongeant agencé pour coulisser dans ce tube sous l'effet des forces électromagnétiques induites par ladite bobine lorsqu'elle est parcourue par un courant électrique et une armature agencée pour entourer au moins partiellement ladite bobine et pour canaliser le champ magnétique généré par elle.The present invention relates to an electromagnet of the reluctant type with plunging core, in particular for a remote control switch or the like, this electromagnet comprising a coil activation mounted on a carcass provided with an axial guide tube in which is arranged a plunging core arranged to slide in this tube under the effect of forces electromagnetic induced by said coil when it is traversed by a current electric and an armature arranged to at least partially surround said coil and for channel the magnetic field generated by it.

On connaít déjà des électroaimants de ce type utilisés par exemple dans les télérupteurs pour commander à distance, notamment par téléphone, plusieurs interrupteurs de façon simultanée, ou dans des machines de bureau, des machines-outils, des automatismes de commande ou de réglage, des distributeurs de monnaies, etc. Ces électroaimants connus sont constitués de différentes parties assemblées selon un procédé relativement complexe, nécessitant plusieurs interventions manuelles ou semi-automatiques, de surcroít onéreuses. En particulier l'armature magnétique et la carcasse de la bobine sont constituées de plusieurs pièces assemblées par sertissage, ce qui requiert des interventions relativement coûteuses. Par ailleurs, ce type d'assemblage n'offre pas toutes les garanties de qualité et de sécurité requises. Par exemple, le mouvement du noyau peut être gêné par l'armature et engendre ainsi des nuisances sonores. De même, le flux magnétique peut être perturbé par des coupures prévues dans l'armature magnétique notamment au niveau des jonctions entre différentes parties constitutives.We already know electromagnets of this type used for example in remote control switches remotely control, in particular by telephone, several switches simultaneously, or in office machines, machine tools, automatic controls or setting, coin dispensers, etc. These known electromagnets consist of different parts assembled according to a relatively complex process, requiring several manual or semi-automatic interventions, moreover expensive. In particular the frame magnetic and the coil carcass are made up of several parts assembled by crimping, which requires relatively expensive interventions. By the way, this guy assembly does not offer all the guarantees of quality and safety required. For example, the movement of the core can be hampered by the armature and thus generates noise pollution. Of even the magnetic flux can be disturbed by cuts in the armature magnetic in particular at the junctions between different constituent parts.

Le but de la présente invention est de pallier ces inconvénients en fournissant un électroaimant de construction simple, efficace et fiable, ne nécessitant qu'un outillage standard ou pas d'outillage du tout. De plus, cette réalisation est conçue pour ne pas perturber les lignes de champ magnétique et pour permettre un coulissement rapide, non entravé et n'engendrant aucune nuisance sonore par contact avec un obstacle disposé sur la trajectoire du noyau plongeant, lors de son déplacement.The object of the present invention is to overcome these drawbacks by providing an electromagnet simple, efficient and reliable construction, requiring only standard tools or not tooling at all. In addition, this embodiment is designed not to disturb the lines of magnetic field and to allow rapid sliding, unhindered and does not generate no noise pollution on contact with an obstacle placed in the path of the core plunging, during its displacement.

Ce but est atteint par un électroaimant tel que défini en préambule et caractérisé en ce que ladite carcasse de la bobine est constituée d'au moins deux plaques de support parallèles reliées entre elles par ledit tube de guidage, et en ce que ladite armature comporte au moins un boítier constitué de deux éléments sensiblement symétriques et agencés pour s'emboíter sur ladite carcasse selon un plan parallèle aux lignes de champ magnétique générées par la bobine en cet endroit, de manière à ne pas perturber le flux magnétique.This object is achieved by an electromagnet as defined in the preamble and characterized in that said coil carcass consists of at least two parallel support plates connected therebetween by said guide tube, and in that said armature comprises at least one housing consisting of two substantially symmetrical elements and arranged to fit on said carcass in a plane parallel to the magnetic field lines generated by the coil in this place, so as not to disturb the magnetic flux.

Selon un mode de réalisation préféré, les plaques de support de ladite carcasse comportent chacune une ouverture centrale dont la forme et les dimensions correspondent à la forme et aux dimensions extérieures dudit tube de guidage, ces plaques de support étant montées parallèlement entre elles sur ledit tube de guidage, de telle manière qu'un tronçon de ce dernier dépasse les plaques de support de part et d'autre de la carcasse de la bobine. Cette construction permet une tenue mécanique efficace et un assemblage simplifié de la carcasse de la bobine.According to a preferred embodiment, the support plates of said carcass comprise each a central opening whose shape and dimensions correspond to the shape and to the external dimensions of said guide tube, these support plates being mounted parallel to each other on said guide tube, so that a section of the latter protrudes the support plates on either side of the coil carcass. This construction allows efficient mechanical strength and simplified assembly of the carcass the coil.

Lesdites plaques de support présentent avantageusement une section quadrangulaire.Said support plates advantageously have a quadrangular section.

Le tube de guidage peut avoir une section quadrangulaire. Dans ce cas, le noyau plongeant présente également une section quadrangulaire dont les dimensions extérieures sont sensiblement égales aux dimensions intérieures du tube de guidage, de telle manière que ledit noyau plongeant coulisse avec un faible jeu à l'intérieur de ce tube.The guide tube may have a quadrangular section. In this case, the plunging core also has a quadrangular section whose external dimensions are substantially equal to the internal dimensions of the guide tube, such that said plunging core slides with little play inside this tube.

Le tube de guidage peut aussi avoir une section circulaire. Dans ce cas, le noyau plongeant présente également une section circulaire dont le diamètre extérieur est sensiblement égal au diamètre intérieur du tube de guidage, de telle manière que ledit noyau plongeant coulisse avec un faible jeu à l'intérieur de ce tube.The guide tube can also have a circular section. In this case, the plunging core also has a circular section whose outside diameter is substantially equal to inner diameter of the guide tube, so that said plunging core slides with a small clearance inside this tube.

Selon le mode de réalisation préféré, les deux éléments symétriques qui constituent le boítier de ladite armature comportent chacun au moins trois parois disposées en U, une paroi arrière et deux parois latérales parallèles entre elles, les parois latérales comportant chacune un dégagement central dont la forme et les dimensions correspondent sensiblement à la moitié du tube de guidage. Cette réalisation permet d'assurer une mise en place rapide de ce boítier par superposition des parois latérales des éléments symétriques de l'armature aux plaques de support de la carcasse de la bobine. According to the preferred embodiment, the two symmetrical elements which constitute the housing of said frame each comprise at least three walls arranged in a U, a rear wall and two side walls parallel to each other, the side walls each comprising a central clearance whose shape and dimensions correspond substantially to half the guide tube. This achievement ensures rapid installation of this housing by superposition of the side walls of the symmetrical elements of the frame on the plates of support of the coil carcass.

Selon la forme du tube de guidage, les dégagements des éléments symétriques ont une forme quadrangulaire ou une forme semi-circulaire.Depending on the shape of the guide tube, the clearances of the symmetrical elements have a shape quadrangular or a semi-circular shape.

Avantageusement les parois parallèles des éléments symétriques sont agencées pour recouvrir, par superposition sensiblement la moitié des plaques de support lorsque ladite armature est montée sur ladite carcasse de la bobine.Advantageously, the parallel walls of the symmetrical elements are arranged to cover, by substantially superimposing half of the support plates when said frame is mounted on said coil carcass.

Selon une variante de réalisation, les plaques de support comportent des moyens de fixation des deux éléments symétriques qui constituent ledit boítier de ladite armature.According to an alternative embodiment, the support plates include fixing means two symmetrical elements which constitute said housing of said frame.

De préférence, ces moyens de fixation comportent au moins deux organes d'assemblage protubérants solidaires des plaques de support, diamétralement opposés et agencés pour s'engager dans des logements appropriés ménagés dans les éléments symétriques formant le boítier de ladite armature.Preferably, these fixing means comprise at least two assembly members protuberances integral with the support plates, diametrically opposite and arranged for engage in suitable housing provided in the symmetrical elements forming the case of said frame.

D'une manière avantageuse et économique, les deux éléments symétriques formant le boítier de l'armature sont découpés à plat dans une feuille de fer doux et pliés suivant au moins deux axes de pliage parallèles.Advantageously and economically, the two symmetrical elements forming the housing of the frame is cut flat in a sheet of soft iron and folded in at least two parallel folding axes.

Les deux éléments symétriques formant le boítier de l'armature présentent, de préférence, un espace qui les sépare, cet espace étant disposé dans un plan de symétrie médian de l'électroaimant.The two symmetrical elements forming the housing of the frame preferably have a space which separates them, this space being arranged in a median plane of symmetry of the electromagnet.

Dans une autre variante de réalisation, la carcasse de la bobine est réalisée en un matériau électriquement isolant et les deux éléments symétriques formant le boítier de ladite armature sont électriquement indépendantes et comportent des bornes de raccordement électrique de ladite bobine.In another alternative embodiment, the carcass of the coil is made of a material electrically insulating and the two symmetrical elements forming the housing of said frame are electrically independent and have electrical connection terminals said coil.

D'autres caractéristiques de la présente invention et leurs principaux avantages ressortiront mieux de la description des exemples de réalisation décrits ci-dessous, et en référence aux dessins annexés, donnés à titre d'exemples non limitatifs, dans lesquels :

  • La figure 1 représente une vue en perspective éclatée illustrant les composants d'un électroaimant selon l'invention, avant leur assemblage,
  • La figure 2 est une vue en perspective de l'électroaimant selon l'invention, représenté par la figure 1, complètement assemblé,
  • La figure 3 est une vue en perspective éclatée illustrant les composants d'une autre forme de réalisation d'un électroaimant selon l'invention, avant leur assemblage,
  • La figure 4 est une vue en perspective de l'électroaimant selon l'invention, représenté par la figure 3, complètement assemblé,
  • La figure 5 représente une vue partielle en perspective éclatée illustrant les composants d'une variante de l'électroaimant de la figure 1, selon l'invention, avant leur assemblage,
  • La figure 6 est une vue partielle en perspective de l'électroaimant selon l'invention, représenté par la figure 5, complètement assemblé, et
  • La figure 7 est une vue en plan représentant un électroaimant selon l'invention avec des bornes de raccordement disposées sur les éléments symétriques constitutifs de l'armature.
Other characteristics of the present invention and their main advantages will emerge more clearly from the description of the exemplary embodiments described below, and with reference to the appended drawings, given by way of nonlimiting examples, in which:
  • FIG. 1 represents an exploded perspective view illustrating the components of an electromagnet according to the invention, before their assembly,
  • FIG. 2 is a perspective view of the electromagnet according to the invention, represented by FIG. 1, completely assembled,
  • FIG. 3 is an exploded perspective view illustrating the components of another embodiment of an electromagnet according to the invention, before their assembly,
  • FIG. 4 is a perspective view of the electromagnet according to the invention, represented by FIG. 3, completely assembled,
  • FIG. 5 represents a partial exploded perspective view illustrating the components of a variant of the electromagnet of FIG. 1, according to the invention, before their assembly,
  • FIG. 6 is a partial perspective view of the electromagnet according to the invention, represented by FIG. 5, completely assembled, and
  • Figure 7 is a plan view showing an electromagnet according to the invention with connection terminals arranged on the symmetrical elements constituting the armature.

En référence aux figures 1 et 2, l'électroaimant représenté 10 comporte principalement une carcasse de bobine 11 qui supporte une bobine 12, une armature 13 et un noyau plongeant 14. La carcasse de la bobine est constituée d'un tube de guidage 15 à l'intérieur duquel est logé le noyau plongeant 14 et deux plaques de support 16 et 17, parallèles entre elles et montées sur le tube de guidage 15. L'armature 13 comporte un boítier fait de deux éléments symétriques 13a et 13b qui sont agencés pour s'emboíter sur ladite carcasse 11 selon un plan de symétrie médian M de l'électroaimant.Referring to Figures 1 and 2, the electromagnet shown 10 mainly comprises a coil casing 11 which supports a coil 12, a frame 13 and a plunging core 14. The coil carcass consists of a guide tube 15 inside which is housed the plunging core 14 and two support plates 16 and 17, mutually parallel and mounted on the guide tube 15. The frame 13 comprises a housing made of two symmetrical elements 13a and 13b which are arranged to fit onto said carcass 11 according to a plane of symmetry median M of the electromagnet.

Les plaques de support 16 et 17 de la carcasse 11 comportent chacune une ouverture centrale dont la forme et les dimensions correspondent sensiblement à la forme et aux dimensions extérieures du tube de guidage 15. De cette manière deux tronçons d'extrémité du tube de guidage 15 sont engagés dans les ouvertures centrales des plaques de support 16 et 17, qui sont de ce fait montées d'une manière rapide, efficace et stable, parallèlement entre elles. La bobine 12 est constituée d'un enroulement fait sur le tube de guidage 15 et délimité de part et d'autre par les plaques de support 16 et 17.The support plates 16 and 17 of the carcass 11 each have a central opening whose shape and dimensions correspond substantially to the shape and dimensions outside of the guide tube 15. In this way two end sections of the guide tube guide 15 are engaged in the central openings of the support plates 16 and 17, which are therefore mounted in a quick, efficient and stable manner, parallel to each other. The coil 12 consists of a winding made on the guide tube 15 and delimited on the one hand and on the other by the support plates 16 and 17.

Dans l'exemple représenté, le tube de guidage 15 a une section transversale quadrangulaire. Il en est de même du noyau plongeant 14. Les dimensions de ce dernier sont telles qu'il puisse coulisser, pratiquement sans jeu, à l'intérieur du tube de guidage 15. De ce fait, aucun obstacle n'entrave son déplacement induit par les forces électromagnétiques générées par la bobine 12 lorsqu'elle est alimentée par un courant électrique, de sorte que le déplacement du noyau plongeant s'effectue sans bruit. Lorsque la bobine est sous tension, la partie mobile est attirée vers une position d'équilibre au milieu de l'électroaimant.In the example shown, the guide tube 15 has a quadrangular cross section. he the same is true of the plunging core 14. The dimensions of the latter are such that it can slide, practically without play, inside the guide tube 15. Therefore, no obstacle does not hinder its displacement induced by the electromagnetic forces generated by the coil 12 when powered by an electric current, so that the displacement of the core diving takes place without noise. When the coil is energized, the moving part is attracted towards an equilibrium position in the middle of the electromagnet.

Le boítier qui constitue l'armature 13 se compose de deux éléments symétriques identiques 13a et 13b comportant trois parois disposées en forme de U. Ces trois parois comprennent une paroi arrière 20 et deux parois latérales 21 et 22. L'écartement des parois latérales 21 et 22, parallèles entre elles, est sensiblement égal ou légèrement supérieur à l'écartement des plaques de support 16 et 17. Les deux parois latérales 21 et 22 comportent chacune un dégagement 23 et 24 dont les dimensions correspondent sensiblement à la moitié du profil du tube de guidage 15 de telle manière que les éléments symétriques 13a et 13b puissent être montés sur la carcasse 11 de la bobine 12, comme le montre la figure 2, les parois latérales 21 et 22 étant superposées aux plaques de support 16 et 17 et les tronçons d'extrémité du tube de guidage 15 qui dépassent les plaques de support 16 et 17 étant engagés dans les dégagements 23 et 24 desdites parois latérales 21 et 22 des éléments symétriques 13a et 13b.The housing which constitutes the frame 13 consists of two identical symmetrical elements 13a and 13b comprising three walls arranged in a U shape. These three walls comprise a rear wall 20 and two side walls 21 and 22. The spacing of the side walls 21 and 22, parallel to each other, is substantially equal to or slightly greater than the spacing of the plates support 16 and 17. The two side walls 21 and 22 each have a clearance 23 and 24, the dimensions of which correspond substantially to half the profile of the guide tube 15 in such a way that the symmetrical elements 13a and 13b can be mounted on the carcass 11 of the coil 12, as shown in FIG. 2, the side walls 21 and 22 being superimposed on the support plates 16 and 17 and the end sections of the guide tube 15 protruding the support plates 16 and 17 being engaged in the clearances 23 and 24 of said side walls 21 and 22 of the symmetrical elements 13a and 13b.

On notera que les deux éléments symétriques 13a et 13b ménagent entre eux un espace 25 qui les sépare, cet espace étant disposé dans un plan parallèle aux lignes de champ magnétique généré en cet endroit par la bobine. Ce plan correspond au plan de symétrie médian M de l'électroaimant.It will be noted that the two symmetrical elements 13a and 13b provide between them a space 25 which separates them, this space being arranged in a plane parallel to the magnetic field lines generated here by the coil. This plane corresponds to the median plane of symmetry M of the electromagnet.

Les figures 3 et 4 illustrent une forme de réalisation très proche de celle décrite précédemment, mais dans laquelle le noyau plongeant 34 a une forme cylindrique et le tube de guidage 35 a une section circulaire, agencée pour que le noyau plongeant puisse coulisser à l'intérieur de ce tube, pratiquement sans jeu. Dans ce cas, les dégagements 43 et 44 des parois latérales 41 et 42 des éléments symétriques 33a et 33b, qui constituent le boítier de l'armature 33 de l'électroaimant 30, ont une forme semi-circulaire. Les autres composants de l'électroaimant 30 sont identiques à ceux qui leur correspondent de l'électroaimant 10. En particulier la bobine 32 est sensiblement identique à la bobine 12, et les plaques de support parallèles de la carcasse 31, désignées par les références 36 et 37 sont sensiblement identiques aux plaques de support 16 et 17 de l'électroaimant 10. Toutefois l'ouverture centrale qui permet le passage des tronçons d'extrémité du tube de guidage 35 est de forme circulaire et non plus quadrangulaire.FIGS. 3 and 4 illustrate an embodiment very close to that described above, but in which the plunging core 34 has a cylindrical shape and the guide tube 35 has a circular section, arranged so that the plunging core can slide inside this tube, practically without play. In this case, the clearances 43 and 44 from the side walls 41 and 42 of the symmetrical elements 33a and 33b, which constitute the housing of the frame 33 of the electromagnet 30, have a semi-circular shape. The other components of the electromagnet 30 are identical to those which correspond to them of the electromagnet 10. In particular the coil 32 is substantially identical to the coil 12, and the parallel support plates of the carcass 31, designated by the references 36 and 37 are substantially identical to the support plates 16 and 17 of the electromagnet 10. However, the central opening which allows the passage of the sections end of the guide tube 35 is circular and no longer quadrangular.

Les figures 5 et 6 illustrent une variante de réalisation de l'électroaimant décrit en référence aux figures 1 et 2. La carcasse 51 de cet électroaimant 50 comporte deux plaques de support 56 et 57 de la bobine (non représentée), qui sont équipées de moyens de fixation des deux éléments symétriques 53 a et 53b constituant le boítier de l'armature 53. Ces moyens de fixation sont constitués d'organes d'assemblage protubérants 60 disposés aux quatre angles de chacune des plaques de support 56 et 57. Ces organes d'assemblage protubérants sont agencés pour s'engager dans des logements appropriés 61 ménagés dans les deux éléments symétriques 53a et 53b, aux angles de leur paroi arrière. Les organes d'assemblage protubérants 60 ont une forme de coin et sont conçus pour s'engager par clip sage dans les logements correspondants. Ce mode d'assemblage est particulièrement efficace et rapide. Il est rendu possible grâce à l'élasticité des plaques de support 56 et 57 qui se déforment légèrement au moment de la mise en place des éléments symétriques 53a et 53b du boítier de l'armature.Figures 5 and 6 illustrate an alternative embodiment of the electromagnet described with reference to FIGS. 1 and 2. The carcass 51 of this electromagnet 50 comprises two support plates 56 and 57 of the coil (not shown), which are equipped with means for fixing the two elements symmetrical 53a and 53b constituting the housing of the frame 53. These fixing means are made up of protruding assembly members 60 arranged at the four angles of each of the support plates 56 and 57. These protruding assembly members are arranged to engage in appropriate housings 61 provided in the two symmetrical elements 53a and 53b, at the corners of their rear wall. The protruding assembly members 60 have a wedge shape and are designed to engage by wise clip in the corresponding housings. This method of assembly is particularly efficient and rapid. It is made possible by the elasticity of the support plates 56 and 57 which deform slightly when put in place symmetrical elements 53a and 53b of the frame housing.

La figure 7 représente un des électroaimants précédemment décrit, vu en plan. Dans cette réalisation les bornes d'entrée et de sortie respectivement 70 et 71 de la bobine 12 sont montés directement sur les deux éléments symétriques 13a et 13b de l'armature 13 de l'électroaimant 10. Dans cette construction, il est évident que les deux plaques de support 16 et 17 ainsi que le tube de guidage 15 doivent être réalisés en un matériau isolant et que les éléments symétriques 13a et 13b qui constituent le boítier de l'armature 13 doivent être réalisés d'une manière suffisamment précise pour que l'espace 25 ménagé entre eux soit suffisamment grand pour éviter un court-circuit au niveau de la bobine.FIG. 7 represents one of the electromagnets previously described, seen in plan. In this realization the input and output terminals 70 and 71 respectively of the coil 12 are mounted directly on the two symmetrical elements 13a and 13b of the armature 13 of the electromagnet 10. In this construction, it is obvious that the two support plates 16 and 17 as well as the guide tube 15 must be made of an insulating material and the symmetrical elements 13a and 13b which constitute the housing of the frame 13 must be made in a way precise enough so that the space 25 between them is large enough to avoid a short circuit at the coil.

Dans les réalisations décrites, les deux éléments symétriques qui constituent le boítier de l'armature 13, 33 et 53 comportent trois parois symétriques en forme de U, une paroi arrière et deux parois latérales parallèles entre elles. Pour réaliser ces deux éléments, on procède habituellement par découpage d'une pièce correspondante dans une feuille de tôle en fer doux disposée à plat et l'on plie les parois latérales selon deux axes de pliage parallèles aux extrémités de la paroi arrière. Dans une variante envisageable, l'armature pourrait être plus enveloppante et comporter une paroi arrière et deux paires de parois latérales parallèles deux à deux dont chacune est adjacente à un côté de la paroi arrière. La fabrication de ces éléments pourrait être sensiblement la même que celle décrite précédemment, à savoir par découpage d'une feuille de tôle en fer doux et pliage des parois latérales autour de quatre axes de pliage correspondant aux quatre côtés de la paroi arrière.In the embodiments described, the two symmetrical elements which constitute the housing of the frame 13, 33 and 53 have three symmetrical U-shaped walls, a rear wall and two side walls parallel to each other. To achieve these two elements, we proceed usually by cutting a corresponding piece from a sheet of soft iron sheet laid out flat and the side walls are folded along two folding axes parallel to the rear wall ends. In a possible variant, the reinforcement could be more enveloping and have a rear wall and two pairs of parallel side walls two to two each of which is adjacent to one side of the rear wall. The manufacturing of these elements could be substantially the same as that described above, namely by cutting of a sheet of sheet iron and folding the side walls around four axes of folding corresponding to the four sides of the rear wall.

Les organes d'assemblage protubérants 60 pourraient avoir des formes différentes de celles décrites. Ces organes disposés aux quatre angles des plaques de support pourraient être remplacés par deux organes disposés sensiblement au milieu de deux côtés opposés desdites plaques de support parallèles.The protruding assembly members 60 could have shapes different from those described. These members arranged at the four corners of the support plates could be replaced by two members arranged substantially in the middle of two opposite sides of said parallel support plates.

De même, le noyau plongeant pourrait présenter par exemple une forme prismatique ou bien être constitué par un empilage de plusieurs tôles.Similarly, the plunging core could for example have a prismatic shape or else consist of a stack of several sheets.

Claims (14)

Electroaimant (10, 30, 50) à noyau plongeant, notamment pour un télérupteur ou similaire, cet électroaimant comportant une bobine d'activation (12, 32) montée sur une carcasse (11, 31, 51) pourvue d'un tube de guidage axial (15, 35, 55) dans lequel est disposé un noyau plongeant (14, 34) agencé pour coulisser dans ce tube sous l'effet des forces électromagnétiques induites par ladite bobine lorsqu'elle est parcourue par un courant électrique et une armature (13, 33, 53) agencée pour entourer au moins partiellement ladite bobine et pour canaliser le champ magnétique généré par elle, caractérisé en ce que ladite carcasse (11, 31, 51) de la bobine (12, 32) est constituée d'au moins deux plaques de support (16, 17, 36, 37, 56, 57) parallèles reliées entre elles par ledit tube de guidage (15, 35, 55) , et en ce que ladite armature (13, 33, 53) comporte au moins un boítier constitué de deux éléments sensiblement symétriques (13a, 13b, 33a, 33b, 53a, 53b) et agencés pour s'emboíter sur ladite carcasse (11, 31, 51) selon un plan M parallèle aux lignes de champ magnétique générées par la bobine en cet endroit, de manière à ne pas perturber le flux magnétique.Electromagnet (10, 30, 50) with plunging core, in particular for a remote control switch or the like, this electromagnet comprising an activation coil (12, 32) mounted on a carcass (11, 31, 51) provided with an axial guide tube (15, 35, 55) in which a core is arranged plunging (14, 34) arranged to slide in this tube under the effect of forces electromagnetic induced by said coil when it is traversed by a current electric and an armature (13, 33, 53) arranged to at least partially surround said coil and for channeling the magnetic field generated by it, characterized in that said carcass (11, 31, 51) of the coil (12, 32) consists of at least two support plates (16, 17, 36, 37, 56, 57) parallel connected together by said guide tube (15, 35, 55), and in that said frame (13, 33, 53) comprises at least one housing consisting of two substantially symmetrical elements (13a, 13b, 33a, 33b, 53a, 53b) and arranged to fit together on said carcass (11, 31, 51) along a plane M parallel to the magnetic field lines generated by the coil in this location, so as not to disturb the magnetic flux. Electroaimant selon la revendication 1, caractérisé en ce que les plaques de support (16, 17, 36, 37, 56, 57) de ladite carcasse (11, 31, 51) comportent chacune une ouverture centrale dont la forme et les dimensions correspondent à la forme et aux dimensions extérieures dudit tube de guidage (15, 35, 55) et en ce que ces plaques de support sont montées parallèlement entre elles sur ledit tube de guidage, de telle manière qu'un tronçon de ce dernier dépasse les plaques de support de part et d'autre de la carcasse de la bobine.Electromagnet according to claim 1, characterized in that the support plates (16, 17, 36, 37, 56, 57) of said carcass (11, 31, 51) each have a central opening of which the shape and dimensions correspond to the shape and external dimensions of said tube guide (15, 35, 55) and in that these support plates are mounted parallel between them on said guide tube, so that a section of the latter exceeds the plates support on either side of the coil carcass. Electroaimant selon la revendication 2, caractérisé en ce que le tube de guidage (15, 55) a une section transversale de forme quadrangulaire et en ce que le noyau plongeant (14) présente également une section quadrangulaire dont les dimensions extérieures sont sensiblement égales aux dimensions intérieures du tube de guidage, de telle manière que ledit noyau plongeant coulisse avec un faible jeu à l'intérieur de ce tube.Electromagnet according to claim 2, characterized in that the guide tube (15, 55) has a cross section of quadrangular shape and in that the plunging core (14) has also a quadrangular section whose external dimensions are substantially equal the internal dimensions of the guide tube, so that said plunging core slides with little play inside this tube. Electroaimant selon la revendication 2 ou 3, caractérisé en ce que les plaques de support (16, 17, 36, 37, 56, 57) présentent une section transversale de forme quadrangulaire. Electromagnet according to claim 2 or 3, characterized in that the support plates (16, 17, 36, 37, 56, 57) have a cross section of quadrangular shape. Electroaimant selon la revendication 2, caractérisé en ce que le tube de guidage (35) a une section circulaire et en ce que le noyau plongeant (34) présente également une section circulaire dont le diamètre extérieur est sensiblement égal au diamètre intérieur du tube de guidage, de telle manière que ledit noyau plongeant coulisse avec un faible jeu à l'intérieur de ce tube.Electromagnet according to claim 2, characterized in that the guide tube (35) has a circular section and in that the plunging core (34) also has a section circular whose outside diameter is substantially equal to the inside diameter of the tube guide, in such a way that said plunging core slides with a small clearance inside this tube. Electroaimant selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les deux éléments symétriques (13a, 13b, 33a, 33b, 53a, 53b) qui constituent le boítier de ladite armature (13, 33, 53) comportent chacun au moins trois parois disposées en U, une paroi arrière (20, 40) et deux parois latérales (21, 22, 41, 42) parallèles entre elles, les parois latérales comportant chacune un dégagement central (23, 24, 43, 44) dont la forme et les dimensions correspondent sensiblement à la moitié du tube de guidage (15, 35, 55).Electromagnet according to any one of Claims 1 to 5, characterized in that the two symmetrical elements (13a, 13b, 33a, 33b, 53a, 53b) which constitute the housing of said frame (13, 33, 53) each have at least three walls arranged in a U, one wall rear (20, 40) and two side walls (21, 22, 41, 42) parallel to each other, the walls side each with a central clearance (23, 24, 43, 44) whose shape and dimensions correspond substantially to half of the guide tube (15, 35, 55). Electroaimant selon la revendication 6, caractérisé en ce que lesdits dégagements (23, 24) des éléments symétriques ont une forme quadrangulaire.Electromagnet according to claim 6, characterized in that said clearances (23, 24) symmetrical elements have a quadrangular shape. Electroaimant selon la revendication 6, caractérisé en ce que lesdits dégagements (43, 44) des éléments symétriques ont une forme semi-circulaire.Electromagnet according to claim 6, characterized in that said clearances (43, 44) symmetrical elements have a semi-circular shape. Electroaimant selon la revendication 6, caractérisé en ce que lesdites parois latérales (21, 22, 41, 42) parallèles des éléments symétriques sont agencées pour recouvrir, par superposition sensiblement la moitié des plaques de support (16, 17, 36, 37) lorsque ladite armature (13, 33, 53) est montée sur ladite carcasse (11, 31, 51) de la bobine.Electromagnet according to claim 6, characterized in that said side walls (21, 22, 41, 42) parallel symmetrical elements are arranged to cover, by superposition substantially half of the support plates (16, 17, 36, 37) when said frame (13, 33, 53) is mounted on said carcass (11, 31, 51) of the coil. Electroaimant selon la revendication 9, caractérisé en ce que lesdites plaques de support (56, 57) comportent des moyens de fixation des deux éléments symétriques (53a, 53b) qui constituent ledit boítier de ladite armature (53).Electromagnet according to claim 9, characterized in that said support plates (56, 57) comprise means for fixing the two symmetrical elements (53a, 53b) which constitute said housing of said frame (53). Electroaimant selon la revendication 10, caractérisé en ce que lesdits moyens de fixation comportent au moins deux organes d'assemblage protubérants (60) solidaires des plaques de support (56, 57), diamétralement opposés et agencés pour s'engager dans des logements (61) appropriés ménagés dans les éléments symétriques (53a, 53b) formant le boítier de ladite armature (53). Electromagnet according to claim 10, characterized in that said fixing means comprise at least two protruding assembly members (60) integral with the plates of support (56, 57), diametrically opposite and arranged to engage in housings (61) suitable formed in the symmetrical elements (53a, 53b) forming the housing of said frame (53). Electroaimant selon la revendication 6, caractérisé en ce que les deux éléments symétriques (13a, 13b, 33a, 33b, 53a, 53b) formant le boítier de l'armature sont découpés à plat dans une feuille de fer doux et pliés suivant au moins deux axes de pliage parallèles.Electromagnet according to claim 6, characterized in that the two elements symmetrical (13a, 13b, 33a, 33b, 53a, 53b) forming the housing of the frame are cut to flat in a sheet of soft iron and folded along at least two parallel folding axes. Electroaimant selon la revendication 1, caractérisé en ce que les deux éléments symétriques (13a, 13b, 33a, 33b, 53a, 53b) formant le boítier de l'armature présentent un espace (25) qui les sépare, cet espace étant disposé dans un plan de symétrie médian (M) de l'électroaimant.Electromagnet according to claim 1, characterized in that the two elements symmetrical (13a, 13b, 33a, 33b, 53a, 53b) forming the housing of the frame have a space (25) which separates them, this space being arranged in a median plane of symmetry (M) of the electromagnet. Electroaimant selon la revendication 1, caractérisé en ce que la carcasse (11, 31, 51) de la bobine est réalisée en un matériau électriquement isolant et en ce que les deux éléments symétriques (13a, 13b, 33a, 33b, 53a, 53b) formant le boítier de ladite armature sont électriquement indépendantes et comportent des bornes (70, 71) de raccordement électrique de ladite bobine.Electromagnet according to claim 1, characterized in that the carcass (11, 31, 51) of the coil is made of an electrically insulating material and in that the two elements symmetrical (13a, 13b, 33a, 33b, 53a, 53b) forming the housing of said frame are electrically independent and have terminals (70, 71) for electrical connection of said coil.
EP97410094A 1996-08-30 1997-08-27 Electromagnet with immersed core used for instance in a remote control interrupter Withdrawn EP0827162A1 (en)

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FR9610798A FR2752995B1 (en) 1996-08-30 1996-08-30 ELECTRO-MAGNET WITH PLUNGER CORE USED FOR EXAMPLE IN A TELERUPTEUR
FR9610798 1996-08-30

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Publication number Priority date Publication date Assignee Title
WO2001059798A1 (en) * 2000-02-11 2001-08-16 Bticino S.P.A. Automatic switch with actuating electromagnet for short circuits
WO2009018670A1 (en) * 2007-08-07 2009-02-12 Uster Technologies Ag Device for cutting a thread-shaped body
WO2012006812A1 (en) * 2010-07-15 2012-01-19 北京翠祥电器元件有限公司 Miniature moulded case circuit breaker

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DE4210740A1 (en) * 1992-04-01 1993-10-07 Licentia Gmbh Electromagnet with lifting armature - accelerates armature quicker with lower voltage due to smaller movable mass and larger active surface
DE4312950A1 (en) * 1993-04-21 1994-10-27 Abb Patent Gmbh Magnetic trigger for an electrical switching device
DE19505798C1 (en) * 1995-02-17 1996-08-01 Robert Thalhammer Electromagnet for automation applications

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Publication number Priority date Publication date Assignee Title
US3262027A (en) * 1964-04-06 1966-07-19 Automatic Switch Co Solenoid structure and mounting means therefor
US3943476A (en) * 1973-12-11 1976-03-09 Nippon Gakki Seizo Kabushiki Kaisha Plunger damping means for an electromagnetic solenoid
EP0204222A1 (en) * 1985-05-28 1986-12-10 Siemens Aktiengesellschaft Retaining device for fire-preventing doors
DE4209757C1 (en) * 1992-03-27 1993-03-11 Kloeckner-Moeller Gmbh, 5300 Bonn, De Operating magnet for EM switch, e.g. for motor protection - has two=part outer yoke fitted to coil carrier
DE4210740A1 (en) * 1992-04-01 1993-10-07 Licentia Gmbh Electromagnet with lifting armature - accelerates armature quicker with lower voltage due to smaller movable mass and larger active surface
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DE19505798C1 (en) * 1995-02-17 1996-08-01 Robert Thalhammer Electromagnet for automation applications

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Publication number Priority date Publication date Assignee Title
WO2001059798A1 (en) * 2000-02-11 2001-08-16 Bticino S.P.A. Automatic switch with actuating electromagnet for short circuits
EP1130613A1 (en) * 2000-02-11 2001-09-05 Bticino S.P.A. Automatic switch with actuating electromagnet for short circuits
WO2009018670A1 (en) * 2007-08-07 2009-02-12 Uster Technologies Ag Device for cutting a thread-shaped body
CN101878172B (en) * 2007-08-07 2013-06-19 乌斯特技术股份公司 Device for cutting thread-shaped body
WO2012006812A1 (en) * 2010-07-15 2012-01-19 北京翠祥电器元件有限公司 Miniature moulded case circuit breaker
CN102339694A (en) * 2010-07-15 2012-02-01 北京翠祥电器元件有限公司 Small-sized molded case circuit breaker (MCCB)
CN102339694B (en) * 2010-07-15 2014-07-09 北京翠祥电器元件有限公司 Small-sized molded case circuit breaker (MCCB)

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FR2752995B1 (en) 1998-10-02

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