WO2013128127A1 - Electromagnetic actuator having an outer coil - Google Patents

Electromagnetic actuator having an outer coil Download PDF

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Publication number
WO2013128127A1
WO2013128127A1 PCT/FR2013/050415 FR2013050415W WO2013128127A1 WO 2013128127 A1 WO2013128127 A1 WO 2013128127A1 FR 2013050415 W FR2013050415 W FR 2013050415W WO 2013128127 A1 WO2013128127 A1 WO 2013128127A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
electromagnetic actuator
actuator according
coil
window
Prior art date
Application number
PCT/FR2013/050415
Other languages
French (fr)
Inventor
Vincent BOITEUX
Edouard Dezille
Pascal FRITSCH
Jean-Marc Voirpin
Original Assignee
Hager-Electro Sas
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hager-Electro Sas filed Critical Hager-Electro Sas
Priority to CN201380020066.0A priority Critical patent/CN104246922B/en
Priority to AU2013224792A priority patent/AU2013224792B2/en
Priority to EP13712870.8A priority patent/EP2820658B1/en
Priority to ES13712870.8T priority patent/ES2583931T3/en
Priority to IN1890MUN2014 priority patent/IN2014MN01890A/en
Publication of WO2013128127A1 publication Critical patent/WO2013128127A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the present invention relates to an electromagnetic actuator of the differential relay type, and relates to the actuator itself and a method of mounting such an apparatus.
  • the actuator of the invention is a high sensitivity device, used in particular in the field of differential protection, when it is considered independently of the mains voltage.
  • the actuators or differential relays used in industry or the tertiary sector are of different types in order to be able to meet the standards in force (differential products of type A, AC, G, S, etc.). Now, they are geometrically identical, ie the parts constituting them are the same, with the exception of the coil, whose number of turns and the section of the wire are adapted to each type of relay mentioned above. . In practice, there are at least two different types of relay that serve different purposes.
  • This type of electromagnetic actuator in fact conventionally comprises:
  • a fixed magnetic frame generally U-shaped, the ends of the two legs constitute two coplanar polar surfaces;
  • a pallet of magnetic material capable of pivoting between two positions respectively at a distance, that is to say leaving an air gap with the armature and, in the armed position of the release, in contact with said polar surfaces, thus closing the magnetic circuit constituted by said armature and said pallet, the point of rotation of the pallet being in the immediate vicinity of the end of one of the legs of the armature;
  • a permanent magnet for biasing the magnetic circuit, arranged between the legs of the armature and creating a permanent magnetic force for attracting the pallet towards the polar surfaces, magnetic force acting against a restoring force of 'a spring ;
  • an induction coil surrounding the magnetic circuit connected for example to a circuit to be controlled, in order to modify the initial equilibrium between the magnetic force and the restoring force of the spring.
  • this coil which constitutes and in fact makes it possible to vary the impedance of the relay, which is therefore different from one type of relay to another if the coils are distinct in terms of the number of turns and the wire section, able to pass from a value order of about 1 ⁇ for low impedance relays to a more conventional value of about 40 ⁇ chosen in most calibres and trip sensitivities, and likely to go up to high values of the type 2000 ⁇ .
  • the operating principle which is well known, is the following: when, for example, a differential-order incident occurs in lines protected by the differential device, generating an induced current in the coil wire, the flux created on this occasion in the magnetic circuit by the coil combines with the flux generated by the permanent magnet.
  • the combination of fluxes induced by the magnet on the one hand and by the current appeared in the coil on the other hand destroys the initial mechanical equilibrium and rotates the pallet, attracted in contact with the polar end surfaces of the armature. .
  • the displacement of the pallet causes that of a mechanical member, for example a rod adapted to unlock the lock of a differential product placed near the electromagnetic actuator, so that said rod can act on a trigger.
  • the coil is the only difference between the different types of relays, so it is a component to choose while mounting the relay.
  • the device and the method of the invention make possible the unified manufacture of the entire actuator with the exception of the coil, which is added to demand, just in time, at the end of product assembly.
  • the electromagnetic actuator according to the invention which essentially comprises a magnetic circuit consisting of a fixed magnetic armature and a movable pallet against a spring and able to move a mechanical actuating member , and an induction coil arranged around a branch of the armature, the assembly being inserted into a housing which exceeds the mechanical member, is characterized in that the housing comprises a through window located inside the magnetic circuit, wherein is wound the coil once the closed housing.
  • This window delimited by internal faces of the housing, is located in the vicinity of at least one outer side of said housing, the coil then being wound around a branch of the housing enclosing a portion of the magnetic armature and separating the window of the proximal outer side of the housing.
  • the window is in practice entirely delimited by the housing, which is completely closed, having internal faces at the periphery of the window.
  • this window may be U-shaped opening into an outer side of the housing, and barred near said side by a bar formed by the housing and surrounding a portion of the magnetic armature.
  • the portion of the housing constituting the bar is less thick than the rest of the housing and set back from the adjacent outer side of said housing, and it is a very natural basis for winding a winding.
  • the coil may however be wound on a support comprising a sleeve of cylindrical shape surrounding the bar and at least two end flanges.
  • the coil support may consist of two parts that can be assembled in a direction parallel to the axis of the sleeve. They are fixed to each other after the bar has been placed between the two half-sleeves.
  • the coil support may consist of a single piece of elastic flexible material provided with a radial slot made in the flanges and the sleeve.
  • the slot is elastically widened for the passage of the bar, the elasticity of the material then resulting in closing the slot and to imprison the bar.
  • the periphery of at least one flange may be toothed. Said support can then be rotated by an external drive gear.
  • two adjacent flanges can equip for this purpose one of the ends of the sleeve.
  • the wire which is self-fastening to the support by wedging between the two flanges that are located very close to each other.
  • one of the ends of the sleeve may protrude from a flange, the axial dimension of the coil being substantially equal to that of the bar.
  • the two adjacent flanges of the previous solution are in practice replaced by a flange and an inner wall of the window, the fastener obeying the same principle as above because the end of the protruding sleeve is provided very short and the wall is so very close to the flask.
  • the outer face of a flange may be provided with at least one hook, preferably two hooks located symmetrically with respect to the axis of the support, and around which one (s) a first winding on a few turns leads to the same result as before: a fixing of the wire without binding mechanical operation.
  • At least one of the flanges may comprise, on its outer face, a metal pellet. This is then used for welding the end of a wire to be wound.
  • the invention also relates to a method of manufacturing an electromagnetic actuator that obeys the above characteristics, which essentially comprises the following steps:
  • the actuator of the invention comprises a coil support
  • the method is more precisely the following:
  • a coil holder is placed around a branch of the housing separating the window and an outer side of the housing;
  • a conductive wire is fixed to said support
  • the support is rotated to carry out the winding.
  • the support is rotated by means of at least one flange, actuated by a toothed wheel if it is toothed, or by a friction wheel if it is not .
  • a winding jig is set up around a branch of the housing separating the window and an outer side of the housing;
  • a conductive wire is fixed to said template
  • said jig is rotated to wind the length of yarn required by the spool; then in a second time
  • the wire is simultaneously unwound from the template and wound around the branch of the housing separating the window and the proximal outer side of the housing;
  • the wire required for the coil is wound firstly to the template before being directly on the housing.
  • the winding jig is in the form of a coil holder which does not remain on the branch but simply serves to transfer the wire on said branch. Without it, it would be necessary to pass the end of the wire in the window for each tower to perform, which is industrially misguided.
  • FIG. 1 shows in perspective view an actuator whose coil is mounted according to the criteria of the invention.
  • FIG. 2 schematically shows an example of a two-part coil carrier.
  • the casing (1) is in the form of an arch with an inverted U-shaped through-window (2) and a bar (3) which encloses a portion of the magnetic armature (not visible).
  • the housing (1) is completely closed, which means that the inner faces defining the U are closed walls of the housing (1) as well as the outer sides.
  • the outer side upper (4) also has the single opening in the housing (1), an orifice (5) for the passage of a rod (6) of the actuator, the mechanical power allows for example to trigger the mechanical lock of a differential electrical device.
  • the coil associated with the actuator of the invention is, in this configuration, wound around the bar (3), for example after having placed a coil support (7) as shown very schematically in Figure 2.
  • Such a coil carrier (7) consists of two parts (8, 8 '), formed in this case symmetrically in a possible configuration, assembled on either side of the bar (3).
  • the fixing of a portion (8, 8 ') to the other (8', 8) can be carried out in practice without additional elements, by simple interlocking studs or pins protruding from one of the parts (8, 8 ') and forcing into holes in the other part (8', 8).
  • the support (7) When the coil support (7) is installed, an end of the winding wire is fixed thereto, then the support (7) is rotated around the bar (3) so that the coil is created gradually, turns after turn obtained. for each complete revolution of the spool support (7). From a dimensional point of view, the length of the support (7), from one end flange (9) to the other (9 '), and the transverse dimensions of the channel delimited by the central sleeve (10) are provided such that the coil support (7) is free to rotate around the bar (3).

Abstract

The invention relates to an electromagnetic actuator comprising a magnetic circuit consisting of a stationary magnetic armature and a blade, said blade being movable in opposition to a spring and capable of moving a mechanical actuating member, and an induction coil arranged about an arm of the armature, the assembly being inserted into a housing from which the mechanical member extends. The housing comprises a through-slot located inside a magnetic circuit, in which through-slot the coil is wound once the housing is closed.

Description

ACTIONNEUR ÉLECTROMAGNÉTIQUE A BOBINAGE EXTERNE.  ELECTROMAGNETIC ACTUATOR WITH EXTERNAL WINDING.
La présente invention a trait à un actionneur électromagnétique du type relais différentiel, et concerne l'actionneur proprement dit ainsi qu'un procédé de montage d'un tel appareil. L'actionneur de l'invention est un dispositif à haute sensibilité, utilisé notamment dans le domaine de la protection différentielle, lorsque celle-ci est envisagée indépendamment de la tension secteur. The present invention relates to an electromagnetic actuator of the differential relay type, and relates to the actuator itself and a method of mounting such an apparatus. The actuator of the invention is a high sensitivity device, used in particular in the field of differential protection, when it is considered independently of the mains voltage.
Dans ce cadre, les actionneurs ou relais différentiels utilisés dans l'industrie ou le tertiaire sont de différents types pour pouvoir répondre aux normes en vigueur (produits différentiels de type A, AC, G, S etc). Or, ils sont géométriquement identiques, c'est à dire que les pièces les constituant sont les mêmes, à l'exception de la bobine, dont le nombre de spire et la section du fil sont adaptés à chaque type de relais mentionné ci-dessus. Il existe en pratique au moins deux types de relais différents obéissant à des usages distincts.  In this context, the actuators or differential relays used in industry or the tertiary sector are of different types in order to be able to meet the standards in force (differential products of type A, AC, G, S, etc.). Now, they are geometrically identical, ie the parts constituting them are the same, with the exception of the coil, whose number of turns and the section of the wire are adapted to each type of relay mentioned above. . In practice, there are at least two different types of relay that serve different purposes.
Ce type d'actionneur électromagnétique comprend en fait classiquement : This type of electromagnetic actuator in fact conventionally comprises:
- une armature magnétique fixe, en général en forme de U, dont les extrémités des deux jambages constituent deux surfaces polaires coplanaires ; a fixed magnetic frame, generally U-shaped, the ends of the two legs constitute two coplanar polar surfaces;
- une palette en matériau magnétique apte à pivoter entre deux positions respectivement à distance, c'est à dire laissant subsister un entrefer avec l'armature et, en position armée du déclencheur, au contact desdites surfaces polaires, fermant ainsi le circuit magnétique constitué par ladite armature et ladite palette, le point de rotation de la palette se situant au voisinage immédiat de l'extrémité de l'un des jambages de l'armature ;  a pallet of magnetic material capable of pivoting between two positions respectively at a distance, that is to say leaving an air gap with the armature and, in the armed position of the release, in contact with said polar surfaces, thus closing the magnetic circuit constituted by said armature and said pallet, the point of rotation of the pallet being in the immediate vicinity of the end of one of the legs of the armature;
- un aimant permanent de polarisation du circuit magnétique, disposé entre les jambages de l'armature et créant une force magnétique permanente d'attraction de la palette vers les surfaces polaires, force magnétique qui s'exerce à encontre d'une force de rappel d'un ressort ;  a permanent magnet for biasing the magnetic circuit, arranged between the legs of the armature and creating a permanent magnetic force for attracting the pallet towards the polar surfaces, magnetic force acting against a restoring force of 'a spring ;
- une bobine d'induction entourant le circuit magnétique, reliée par exemple à un circuit à contrôler, en vue de modifier l'équilibre initial entre la force magnétique et la force de rappel du ressort.  an induction coil surrounding the magnetic circuit, connected for example to a circuit to be controlled, in order to modify the initial equilibrium between the magnetic force and the restoring force of the spring.
C'est cette bobine qui constitue et permet en réalité de faire varier l'impédance du relais, qui est par conséquent différente d'un type de relais à l'autre si les bobines sont distinctes en termes de nombre de spires et de section du fil, pouvant passer d'un ordre de valeur allant d'environ 1 Ω pour les relais à faible impédance à une valeur plus classique d'environ 40 Ω choisie dans la plupart des calibres et sensibilités de déclenchement, et susceptible d'aller jusqu'à des valeurs élevées du type 2000 Ω. It is this coil which constitutes and in fact makes it possible to vary the impedance of the relay, which is therefore different from one type of relay to another if the coils are distinct in terms of the number of turns and the wire section, able to pass from a value order of about 1 Ω for low impedance relays to a more conventional value of about 40 Ω chosen in most calibres and trip sensitivities, and likely to go up to high values of the type 2000 Ω.
Le principe de fonctionnement, bien connu, est le suivant : lorsque par exemple un incident d'ordre différentiel survient dans des lignes protégées par le dispositif différentiel, générant un courant induit dans le fil de la bobine, le flux créé à cette occasion dans le circuit magnétique par la bobine se combine au flux généré par l'aimant permanent. La combinaison des flux induits par l'aimant d'une part et par le courant apparu dans la bobine d'autre part détruit l'équilibre mécanique initial et fait pivoter la palette, attirée au contact des surfaces polaires d'extrémité de l'armature. Le déplacement de la palette entraine celui d'un organe mécanique, par exemple une tige apte à déverrouiller la serrure d'un produit différentiel placé à proximité de l'actionneur électromagnétique, de telle sorte que ladite tige puisse agir sur un déclencheur.  The operating principle, which is well known, is the following: when, for example, a differential-order incident occurs in lines protected by the differential device, generating an induced current in the coil wire, the flux created on this occasion in the magnetic circuit by the coil combines with the flux generated by the permanent magnet. The combination of fluxes induced by the magnet on the one hand and by the current appeared in the coil on the other hand destroys the initial mechanical equilibrium and rotates the pallet, attracted in contact with the polar end surfaces of the armature. . The displacement of the pallet causes that of a mechanical member, for example a rod adapted to unlock the lock of a differential product placed near the electromagnetic actuator, so that said rod can act on a trigger.
La bobine étant l'unique différence entre les différents types de relais, elle constitue jusqu'ici un composant à choisir pendant le montage du relais. The coil is the only difference between the different types of relays, so it is a component to choose while mounting the relay.
Dans les chaînes d'assemblage dans l'industrie, l'étape de montage de la bobine intervient dans la plupart des cas assez tôt, c'est à dire que la bobine sélectionnée pour le produit en cours d'assemblage est montée au cours des premières phases à partir de stocks des différentes bobines disponibles. In the assembly lines in the industry, the assembly step of the reel intervenes in most cases quite early, that is to say that the selected reel for the product being assembled is assembled during the first phases from stocks of different reels available.
Pour répondre au mieux aux demandes du marché, il faut alors obligatoirement produire les différents types de relais afin de les avoir toujours tous en stock. Cela n'est ni judicieux en termes de fabrication, ni de stockage, avec toutes les incidences financières négatives que ces opérations recèlent.  To best meet the demands of the market, it is then necessary to produce the different types of relays to always have them all in stock. This is not wise in terms of manufacturing or storage, with all the negative financial implications that these operations entail.
Pour résoudre ce problème, et simplifier dans le même temps l'industrialisation desdits relais, le dispositif et le procédé de l'invention rendent possible la fabrication unifiée de la totalité de l'actionneur à l'exception de la bobine, qui est ajoutée à la demande, en flux tendu, en fin de montage du produit.  To solve this problem, and simplify at the same time the industrialization of said relays, the device and the method of the invention make possible the unified manufacture of the entire actuator with the exception of the coil, which is added to demand, just in time, at the end of product assembly.
En d'autre termes, l'actionneur électromagnétique selon l'invention, qui comporte essentiellement un circuit magnétique constitué d'une armature magnétique fixe et d'une palette mobile à rencontre d'un ressort et apte à déplacer un organe mécanique d'actionnement, et une bobine d'induction disposée autour d'une branche de l'armature, l'ensemble étant inséré dans un boîtier dont dépasse l'organe mécanique, se caractérise en ce que le boîtier comporte une fenêtre traversante localisée à l'intérieur du circuit magnétique, dans laquelle est enroulée la bobine une fois le boîtier fermé. In other words, the electromagnetic actuator according to the invention, which essentially comprises a magnetic circuit consisting of a fixed magnetic armature and a movable pallet against a spring and able to move a mechanical actuating member , and an induction coil arranged around a branch of the armature, the assembly being inserted into a housing which exceeds the mechanical member, is characterized in that the housing comprises a through window located inside the magnetic circuit, wherein is wound the coil once the closed housing.
Cette fenêtre, délimitée par des faces internes du boîtier, est localisée au voisinage d'au moins un côté extérieur dudit boîtier, la bobine étant alors enroulée autour d'une branche du boîtier renfermant une portion de l'armature magnétique et séparant la fenêtre du côté extérieur proximal du boîtier.  This window, delimited by internal faces of the housing, is located in the vicinity of at least one outer side of said housing, the coil then being wound around a branch of the housing enclosing a portion of the magnetic armature and separating the window of the proximal outer side of the housing.
La fenêtre est en pratique entièrement délimitée par le boîtier, lequel est complètement fermé, présentant des faces internes à la périphérie de la fenêtre.  The window is in practice entirely delimited by the housing, which is completely closed, having internal faces at the periphery of the window.
Selon une configuration possible, cette fenêtre peut être en U débouchant dans un côté extérieur du boîtier, et barrée à proximité dudit côté par un barreau formé par le boîtier et entourant une portion de l'armature magnétique. Dans ce cas, la partie du boîtier constituant le barreau est moins épaisse que le reste du boîtier et située en retrait par rapport au côté extérieur adjacent dudit boîtier, et elle constitue une base très naturelle pour bobiner un enroulement.  In a possible configuration, this window may be U-shaped opening into an outer side of the housing, and barred near said side by a bar formed by the housing and surrounding a portion of the magnetic armature. In this case, the portion of the housing constituting the bar is less thick than the rest of the housing and set back from the adjacent outer side of said housing, and it is a very natural basis for winding a winding.
Selon une possibilité, la bobine peut cependant être enroulée sur un support comprenant un manchon d'allure cylindrique entourant le barreau et au moins deux flasques d'extrémité.  According to one possibility, the coil may however be wound on a support comprising a sleeve of cylindrical shape surrounding the bar and at least two end flanges.
Pour pouvoir disposer la bobine sur le barreau, le support de bobine peut être constitué de deux pièces assemblables dans une direction d'allure parallèle à l'axe du manchon. Elles sont fixées l'une à l'autre après que le barreau ait été placé entre les deux demi-manchons.  In order to be able to arrange the coil on the bar, the coil support may consist of two parts that can be assembled in a direction parallel to the axis of the sleeve. They are fixed to each other after the bar has been placed between the two half-sleeves.
Alternativement, le support de bobine peut être constitué d'une seule pièce en matériau flexible élastique munie d'une fente radiale pratiquée dans les flasques et le manchon. Dans ce cas, la fente est élastiquement élargie pour le passage du barreau, l'élasticité du matériau aboutissant ensuite à refermer la fente et à emprisonner le barreau.  Alternatively, the coil support may consist of a single piece of elastic flexible material provided with a radial slot made in the flanges and the sleeve. In this case, the slot is elastically widened for the passage of the bar, the elasticity of the material then resulting in closing the slot and to imprison the bar.
En vue d'imprimer une rotation au support de bobine pour le bobinage de la bobine, la périphérie d'au moins un flasque peut être dentée. Ledit support peut alors être entraîné en rotation par une roue dentée motrice extérieure.  In order to print a rotation to the bobbin support for winding the bobbin, the periphery of at least one flange may be toothed. Said support can then be rotated by an external drive gear.
Préalablement à toute rotation, il importe cependant de fixer l'extrémité du fil à bobiner au support de bobine. Selon une possibilité, deux flasques adjacents peuvent équiper à cet effet l'une des extrémités du manchon. On enroule alors sur quelques tours le fil, qui s'autofixe au support par coincement entre les deux flasques qui sont situés très proches l'un de l'autre. Prior to any rotation, however, it is important to fix the end of the winding wire to the spool support. According to one possibility, two adjacent flanges can equip for this purpose one of the ends of the sleeve. The wire, which is self-fastening to the support by wedging between the two flanges that are located very close to each other.
Alternativement, l'une des extrémités du manchon peut dépasser d'un flasque, la dimension axiale de la bobine étant sensiblement égale à celle du barreau. Dans ce cas, les deux flasques adjacents de la solution précédente sont en pratique remplacés par un flasque et une paroi interne de la fenêtre, la fixation obéissant au même principe que précédemment car l'extrémité du manchon dépassant est prévue très courte et la paroi est donc très proche du flasque.  Alternatively, one of the ends of the sleeve may protrude from a flange, the axial dimension of the coil being substantially equal to that of the bar. In this case, the two adjacent flanges of the previous solution are in practice replaced by a flange and an inner wall of the window, the fastener obeying the same principle as above because the end of the protruding sleeve is provided very short and the wall is so very close to the flask.
Selon encore une alternative possible, la face extérieure d'un flasque peut être muni d'au moins un crochet, de préférence de deux crochets situés symétriquement par rapport à l'axe du support, et autour du(des)quel(s) un premier bobinage sur quelques tours aboutit au même résultat qu'auparavant : une fixation du fil sans opération mécanique contraignante.  According to another possible alternative, the outer face of a flange may be provided with at least one hook, preferably two hooks located symmetrically with respect to the axis of the support, and around which one (s) a first winding on a few turns leads to the same result as before: a fixing of the wire without binding mechanical operation.
Enfin, toujours dans le même but, l'un au moins des flasques peut comporter, sur sa face extérieure, une pastille métallique. Celle-ci est alors utilisée pour le soudage de l'extrémité d'un fil à bobiner.  Finally, still for the same purpose, at least one of the flanges may comprise, on its outer face, a metal pellet. This is then used for welding the end of a wire to be wound.
L'invention concerne par ailleurs un procédé de fabrication d'un actionneur électromagnétique obéissant aux caractéristiques précédentes, qui comporte à titre essentiel les étapes suivantes :  The invention also relates to a method of manufacturing an electromagnetic actuator that obeys the above characteristics, which essentially comprises the following steps:
- assemblage de l'armature, la palette, le ressort et l'organe mécanique à l'intérieur du boîtier ;  - assembly of the frame, the pallet, the spring and the mechanical member inside the case;
- fermeture du boîtier ;  - closing the case;
- enroulement de la bobine à travers la fenêtre du boîtier.  winding the coil through the housing window.
On a noté auparavant l'importance de reléguer en dernier lieu l'installation de la bobine, ce qui n'est possible que parce que le boîtier est prévu à cet effet, c'est-à-dire en pratique doté d'une fenêtre intérieure traversante.  It was previously noted the importance of relegating the installation of the coil last, which is possible only because the housing is provided for this purpose, that is to say in practice with a window inner through.
Dans le cas où l'actionneur de l'invention comporte un support de bobine, le procédé est plus précisément le suivant :  In the case where the actuator of the invention comprises a coil support, the method is more precisely the following:
- après la fermeture du boîtier, un support de bobine est mis en place autour d'une branche du boîtier séparant la fenêtre et un côté extérieur du boîtier ;  - After closing the housing, a coil holder is placed around a branch of the housing separating the window and an outer side of the housing;
- un fil conducteur est fixé audit support ; et  a conductive wire is fixed to said support; and
- ledit support est mis en rotation pour réaliser le bobinage. En pratique, comme cela a été évoqué auparavant, le support est mis en rotation au moyen d'au moins un flasque, actionné par une roue dentée s'il est denté, ou par une roue à friction s'il ne l'est pas. said support is rotated to carry out the winding. In practice, as previously mentioned, the support is rotated by means of at least one flange, actuated by a toothed wheel if it is toothed, or by a friction wheel if it is not .
Dans la variante selon laquelle il n'y a pas de support de bobine, qui est également possible, il est nécessaire de recourir à un gabarit de bobinage qui sert à bobiner le fil directement sur la branche, et le procédé comporte alors les étapes suivantes :  In the variant that there is no coil support, which is also possible, it is necessary to use a winding jig which serves to wind the wire directly on the branch, and the method then comprises the following steps :
- après la fermeture du boîtier, un gabarit de bobinage est mis en place autour d'une branche du boîtier séparant la fenêtre et un côté extérieur du boîtier ;  - After closure of the housing, a winding jig is set up around a branch of the housing separating the window and an outer side of the housing;
- un fil conducteur est fixé audit gabarit ;  a conductive wire is fixed to said template;
- ledit gabarit est mis en rotation pour bobiner la longueur de fil nécessaire à la bobine ; puis dans un second temps  said jig is rotated to wind the length of yarn required by the spool; then in a second time
- le fil est simultanément débobiné du gabarit et bobiné autour de la branche du boîtier séparant la fenêtre et le côté extérieur proximal du boîtier ; et  - The wire is simultaneously unwound from the template and wound around the branch of the housing separating the window and the proximal outer side of the housing; and
- le gabarit est retiré de la branche.  - the template is removed from the branch.
Dans ce cas, le fil nécessaire à la bobine est donc bobiné dans un premier temps au gabarit avant de l'être directement sur le boîtier. En pratique, le gabarit de bobinage se présente sous la forme d'un support de bobine qui ne reste pas sur la branche mais sert simplement à transférer le fil sur ladite branche. Sans lui, il faudrait faire passer l'extrémité du fil dans la fenêtre pour chaque tour à effectuer, ce qui est industriellement peu judicieux.  In this case, the wire required for the coil is wound firstly to the template before being directly on the housing. In practice, the winding jig is in the form of a coil holder which does not remain on the branch but simply serves to transfer the wire on said branch. Without it, it would be necessary to pass the end of the wire in the window for each tower to perform, which is industrially misguided.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode particulier de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté aux dessins annexés sur lesquels :  Other advantages and features will emerge more clearly from the following description of a particular embodiment of the invention, given by way of non-limiting example, and represented in the accompanying drawings in which:
- la figure 1 représente en vue perspective un actionneur dont la bobine est montée selon les critères de l'invention ; et  - Figure 1 shows in perspective view an actuator whose coil is mounted according to the criteria of the invention; and
- la figure 2 montre de manière schématique un exemple de support de bobine en deux parties.  - Figure 2 schematically shows an example of a two-part coil carrier.
En référence à la figure 1 , le boîtier (1 ) est en forme d'arche avec une fenêtre traversante (2) en U inversé et un barreau (3) qui enclôt une portion de l'armature magnétique (non visible). Le boîtier (1 ) est totalement fermé, ce qui signifie que les faces internes délimitant le U sont des parois fermées du boîtier (1 ) au même titre que les côtés extérieurs. Le côté extérieur supérieur (4) comporte d'ailleurs l'unique ouverture pratiquée dans le boîtier (1 ), un orifice (5) permettant le passage d'une tige (6) de l'actionneur, dont la puissance mécanique permet par exemple de faire déclencher la serrure mécanique d'un appareil électrique différentiel. With reference to FIG. 1, the casing (1) is in the form of an arch with an inverted U-shaped through-window (2) and a bar (3) which encloses a portion of the magnetic armature (not visible). The housing (1) is completely closed, which means that the inner faces defining the U are closed walls of the housing (1) as well as the outer sides. The outer side upper (4) also has the single opening in the housing (1), an orifice (5) for the passage of a rod (6) of the actuator, the mechanical power allows for example to trigger the mechanical lock of a differential electrical device.
La bobine associée à l'actionneur de l'invention est, dans cette configuration, enroulée autour du barreau (3), par exemple après y avoir placé un support de bobine (7) tel qu'apparaissant très schématiquement en figure 2.  The coil associated with the actuator of the invention is, in this configuration, wound around the bar (3), for example after having placed a coil support (7) as shown very schematically in Figure 2.
Un tel support de bobine (7) est constitué de deux parties (8, 8'), formées en l'espèce symétriquement selon une configuration possible, assemblables de part et d'autre du barreau (3). La fixation d'une partie (8, 8') à l'autre (8', 8) peut s'effectuer en pratique sans éléments additionnels, par simple emboîtement de plots ou picots dépassant de l'une des parties (8, 8') et s'ajustant à force dans des orifices de l'autre partie (8', 8).  Such a coil carrier (7) consists of two parts (8, 8 '), formed in this case symmetrically in a possible configuration, assembled on either side of the bar (3). The fixing of a portion (8, 8 ') to the other (8', 8) can be carried out in practice without additional elements, by simple interlocking studs or pins protruding from one of the parts (8, 8 ') and forcing into holes in the other part (8', 8).
Lorsque le support de bobine (7) est installé, une extrémité du fil à bobiner y est fixée, puis le support (7) est mis en rotation autour du barreau (3) de sorte que la bobine se crée progressivement, spire après spire obtenue pour chaque tour complet du support de bobine (7). D'un point de vue dimensionnel, la longueur du support (7), d'un flasque d'extrémité (9) à l'autre (9'), et les dimensions transversales du canal délimité par le manchon central (10) sont prévus tels que le support de bobine (7) soit libre en rotation autour du barreau (3).  When the coil support (7) is installed, an end of the winding wire is fixed thereto, then the support (7) is rotated around the bar (3) so that the coil is created gradually, turns after turn obtained. for each complete revolution of the spool support (7). From a dimensional point of view, the length of the support (7), from one end flange (9) to the other (9 '), and the transverse dimensions of the channel delimited by the central sleeve (10) are provided such that the coil support (7) is free to rotate around the bar (3).
Bien entendu, l'exemple ci-dessus ne doit pas être considéré comme exhaustif de l'invention, qui comporte au contraire un ensemble de variantes de formes et de configurations telles que le doublement de l'un des flasques (9, 9') pour réaliser la fixation d'une extrémité du fil à bobiner, la réalisation d'un support (7) en une pièce munie d'une fente radiale selon une configuration visible en figure 2 si les parties en pointillées (1 1 ) étaient des prolongements solides du support (7) selon la première version, des parties (8, 8') non symétriques etc..  Of course, the above example should not be considered exhaustive of the invention, which instead comprises a set of variants of shapes and configurations such as the doubling of one of the flanges (9, 9 ') for fixing one end of the winding wire, the production of a one-piece support (7) provided with a radial slot in a configuration visible in FIG. 2 if the dotted parts (1 1) were extensions solid of the support (7) according to the first version, parts (8, 8 ') not symmetrical etc.

Claims

REVENDICATIONS
1 . Actionneur électromagnétique comportant un circuit magnétique constitué : 1. Electromagnetic actuator comprising a magnetic circuit consisting of:
- d'une armature magnétique fixe présentant au moins une surface polaire ;  a fixed magnetic armature having at least one polar surface;
d'une palette mobile à encontre d'un ressort et apte à déplacer un organe mécanique d'actionnement (6) ;  a movable pallet against a spring and adapted to move a mechanical actuating member (6);
- et d'un aimant permanent de polarisation du circuit magnétique créant une force magnétique permanente d'attraction de la palette vers la surface polaire de l'armature ;  and a permanent magnet for biasing the magnetic circuit creating a permanent magnetic force for attracting the pallet towards the polar surface of the armature;
et une bobine d'induction disposée autour d'une branche de l'armature, l'ensemble étant inséré dans un boîtier (1 ) dont dépasse l'organe mécanique (6), caractérisé en ce que le boîtier (1 ) comporte une fenêtre traversante (2) localisée à l'intérieur du circuit magnétique, dans laquelle est enroulée la bobine une fois le boîtier (1 ) fermé.  and an induction coil arranged around a branch of the armature, the assembly being inserted into a casing (1) which protrudes from the mechanical member (6), characterized in that the casing (1) comprises a window through (2) located inside the magnetic circuit, in which is wound the coil once the housing (1) closed.
2. Actionneur électromagnétique selon la revendication précédente, caractérisé en ce que ladite fenêtre (2), délimitée par des faces internes du boîtier (1 ), est localisée au voisinage d'au moins un côté extérieur dudit boîtier (1 ), la bobine étant enroulée autour d'une branche (3) du boîtier (1 ) renfermant une portion de l'armature magnétique et séparant la fenêtre (2) du côté extérieur proximal du boîtier (1 ).  2. Electromagnetic actuator according to the preceding claim, characterized in that said window (2), delimited by internal faces of the housing (1), is located in the vicinity of at least one outer side of said housing (1), the coil being wound around a branch (3) of the housing (1) enclosing a portion of the magnetic armature and separating the window (2) from the proximal outer side of the housing (1).
3. Actionneur électromagnétique selon la revendication précédente, caractérisé en ce que la fenêtre (2) est en U débouchant dans un côté extérieur du boîtier (1 ), et barrée à proximité dudit côté par un barreau (3) formé par le boîtier (1 ) et entourant une portion de l'armature magnétique.  3. Electromagnetic actuator according to the preceding claim, characterized in that the window (2) is U-shaped opening into an outer side of the housing (1), and locked close to said side by a bar (3) formed by the housing (1). ) and surrounding a portion of the magnetic armature.
4. Actionneur électromagnétique selon la revendication précédente, caractérisé en ce que la bobine est enroulée sur un support (7) comprenant un manchon (10) d'allure cylindrique entourant le barreau (3) et au moins deux flasques d'extrémité (9, 9').  4. Electromagnetic actuator according to the preceding claim, characterized in that the coil is wound on a support (7) comprising a sleeve (10) of cylindrical shape surrounding the bar (3) and at least two end flanges (9, 9 ').
5. Actionneur électromagnétique selon la revendication précédente, caractérisé en ce que le support de bobine (7) est constitué de deux pièces (8, 8') assemblables dans une direction d'allure parallèle à l'axe du manchon (10).  5. Electromagnetic actuator according to the preceding claim, characterized in that the coil carrier (7) consists of two parts (8, 8 ') assembled in a direction parallel to the axis of the sleeve (10).
6. Actionneur électromagnétique selon la revendication 4, caractérisé en ce que le support de bobine (7) est constitué d 'une seule pièce en matériau flexible élastique munie d'une fente radiale pratiquée dans les flasques (9, 9') et le manchon (10). Electromagnetic actuator according to claim 4, characterized in that the coil carrier (7) consists of a single piece of material elastic hose provided with a radial slot made in the flanges (9, 9 ') and the sleeve (10).
7. Actionneur électromagnétique selon l'une des revendications 5 et 6, caractérisé en ce que la périphérie d'au moins un flasque (9, 9') est dentée.  7. Electromagnetic actuator according to one of claims 5 and 6, characterized in that the periphery of at least one flange (9, 9 ') is toothed.
8. Actionneur électromagnétique selon l'une des revendications 4 à 6, caractérisé en ce que deux flasques adjacents équipent l'une des extrémités du manchon (10).  8. Electromagnetic actuator according to one of claims 4 to 6, characterized in that two adjacent flanges are fitted to one end of the sleeve (10).
9. Actionneur électromagnétique selon l'une des revendications 4 à 6, caractérisé en ce que l'une des extrémités du manchon (10) dépasse d'un flasque (9, 9'), la dimension axiale de la bobine étant sensiblement égale à celle du barreau (3).  9. Electromagnetic actuator according to one of claims 4 to 6, characterized in that one end of the sleeve (10) protrudes from a flange (9, 9 '), the axial dimension of the coil being substantially equal to that of the bar (3).
10. Actionneur électromagnétique selon l'une des revendications 4 à 6, caractérisé en ce que la face extérieure d'un flasque (9, 9') est muni d'au moins un crochet.  10. Electromagnetic actuator according to one of claims 4 to 6, characterized in that the outer face of a flange (9, 9 ') is provided with at least one hook.
1 1 . Actionneur électromagnétique selon l'une des revendications 4 à 6, caractérisé en ce que l'un au moins des flasques (9, 9') comporte, sur sa face extérieure, une pastille métallique.  1 1. Electromagnetic actuator according to one of claims 4 to 6, characterized in that at least one of the flanges (9, 9 ') has, on its outer face, a metal pellet.
12. Procédé de fabrication d'un actionneur électromagnétique selon les revendications précédentes caractérisé par les étapes suivantes :  12. A method of manufacturing an electromagnetic actuator according to the preceding claims characterized by the following steps:
- Assemblage de l'armature, la palette, le ressort et l'organe mécanique (6) à l'intérieur du boîtier ;  - Assembly of the frame, the pallet, the spring and the mechanical member (6) inside the housing;
- Fermeture du boîtier (1 ) ;  - Closing the housing (1);
- Enroulement de la bobine à travers la fenêtre du boîtier (1 ).  - Winding the coil through the housing window (1).
13. Procédé de fabrication d'un actionneur électromagnétique selon la revendication précédente, caractérisé en ce que : 13. A method of manufacturing an electromagnetic actuator according to the preceding claim, characterized in that:
- après la fermeture du boîtier (1 ), un support de bobine (7) est mis en place autour d'une branche (3) du boîtier (1 ) séparant la fenêtre (2) et un côté extérieur du boîtier (1 ) ;  - After closing the housing (1), a coil carrier (7) is placed around a branch (3) of the housing (1) separating the window (2) and an outer side of the housing (1);
- un fil conducteur est fixé audit support (7) ; et  a conductive wire is fixed to said support (7); and
- ledit support (7) est mis en rotation pour réaliser le bobinage.  - The said support (7) is rotated to perform the winding.
14. Procédé de fabrication d'un actionneur électromagnétique selon la revendication précédente, caractérisé en ce que le support (7) est mis en rotation au moyen d'au moins un flasque (9, 9'), actionné par une roue dentée s'il est denté, ou par une roue à friction.  14. A method of manufacturing an electromagnetic actuator according to the preceding claim, characterized in that the support (7) is rotated by means of at least one flange (9, 9 '), actuated by a gear wheel s' it is toothed, or by a friction wheel.
15. Procédé de fabrication d'un actionneur électromagnétique selon la revendication 12, caractérisé en ce que : - après la fermeture du boîtier (1 ), un gabarit de bobinage est mis en place autour d'une branche (3) du boîtier (1 ) séparant la fenêtre (2) et un côté extérieur du boîtier (1 ) ; 15. A method of manufacturing an electromagnetic actuator according to claim 12, characterized in that: - After closure of the housing (1), a winding jig is placed around a branch (3) of the housing (1) separating the window (2) and an outer side of the housing (1);
- un fil conducteur est fixé audit gabarit ;  a conductive wire is fixed to said template;
- ledit gabarit est mis en rotation pour bobiner la longueur de fil nécessaire à la bobine ; puis dans un second temps  said jig is rotated to wind the length of yarn required by the spool; then in a second time
- le fil est simultanément débobiné du gabarit et bobiné autour de la branche (3) du boîtier (1 ) séparant la fenêtre (2) et le côté extérieur proximal du boîtier (1 ) ; et  - The wire is simultaneously unwound from the template and wound around the branch (3) of the housing (1) separating the window (2) and the proximal outer side of the housing (1); and
- le gabarit est retiré de la branche (3).  - the template is removed from the branch (3).
PCT/FR2013/050415 2012-02-29 2013-02-28 Electromagnetic actuator having an outer coil WO2013128127A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201380020066.0A CN104246922B (en) 2012-02-29 2013-02-28 There is the electromagnetic actuator of exterior loop
AU2013224792A AU2013224792B2 (en) 2012-02-29 2013-02-28 Electromagnetic actuator having an outer coil
EP13712870.8A EP2820658B1 (en) 2012-02-29 2013-02-28 Electromagnetic actuator having an outer coil
ES13712870.8T ES2583931T3 (en) 2012-02-29 2013-02-28 Electromagnetic external winding actuator
IN1890MUN2014 IN2014MN01890A (en) 2012-02-29 2013-02-28

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1251863A FR2987491B1 (en) 2012-02-29 2012-02-29 ELECTROMAGNETIC ACTUATOR WITH EXTERNAL WINDING
FR1251863 2012-02-29

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WO2013128127A1 true WO2013128127A1 (en) 2013-09-06

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PCT/FR2013/050415 WO2013128127A1 (en) 2012-02-29 2013-02-28 Electromagnetic actuator having an outer coil

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EP (1) EP2820658B1 (en)
CN (1) CN104246922B (en)
AU (1) AU2013224792B2 (en)
ES (1) ES2583931T3 (en)
FR (1) FR2987491B1 (en)
IN (1) IN2014MN01890A (en)
PL (1) PL2820658T3 (en)
PT (1) PT2820658T (en)
WO (1) WO2013128127A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1266062A (en) * 1960-07-22 1961-07-07 Process for forming coils on iron cores
DE1916637A1 (en) * 1969-04-01 1970-10-08 Herbert Ruff Method for winding closed cores
EP0093931A1 (en) * 1982-04-30 1983-11-16 BROWN, BOVERI & CIE Aktiengesellschaft Leakage current release with a wound coil, process for winding the coil and device for carrying out the process
DE3531051A1 (en) * 1985-08-30 1987-03-12 Bbc Brown Boveri & Cie Residual current device
EP1643526A1 (en) * 2004-09-30 2006-04-05 Siemens Aktiengesellschaft Electromagnetic relay trip device for a protective switching device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT414183B (en) * 1994-06-08 2006-10-15 Tyco Electronics Austria Gmbh BISTABLE SWITCHING DEVICE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1266062A (en) * 1960-07-22 1961-07-07 Process for forming coils on iron cores
DE1916637A1 (en) * 1969-04-01 1970-10-08 Herbert Ruff Method for winding closed cores
EP0093931A1 (en) * 1982-04-30 1983-11-16 BROWN, BOVERI & CIE Aktiengesellschaft Leakage current release with a wound coil, process for winding the coil and device for carrying out the process
DE3531051A1 (en) * 1985-08-30 1987-03-12 Bbc Brown Boveri & Cie Residual current device
EP1643526A1 (en) * 2004-09-30 2006-04-05 Siemens Aktiengesellschaft Electromagnetic relay trip device for a protective switching device

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PL2820658T3 (en) 2016-10-31
FR2987491A1 (en) 2013-08-30
CN104246922B (en) 2016-12-07
ES2583931T3 (en) 2016-09-22
CN104246922A (en) 2014-12-24
IN2014MN01890A (en) 2015-07-10
EP2820658A1 (en) 2015-01-07
FR2987491B1 (en) 2022-02-25
EP2820658B1 (en) 2016-04-27
AU2013224792A1 (en) 2014-10-16
PT2820658T (en) 2016-07-18
AU2013224792B2 (en) 2016-04-07

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