EP2437278B1 - Assembly of a motor of a multipolar contactor - Google Patents

Assembly of a motor of a multipolar contactor Download PDF

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Publication number
EP2437278B1
EP2437278B1 EP20100306065 EP10306065A EP2437278B1 EP 2437278 B1 EP2437278 B1 EP 2437278B1 EP 20100306065 EP20100306065 EP 20100306065 EP 10306065 A EP10306065 A EP 10306065A EP 2437278 B1 EP2437278 B1 EP 2437278B1
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EP
European Patent Office
Prior art keywords
armature
fixed
motor assembly
electromagnetic motor
assembly according
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EP20100306065
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German (de)
French (fr)
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EP2437278A1 (en
Inventor
Stéphane Eloy
David Weil
Denis Speich
Claudia Dietrich
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Hager Electro SAS
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Hager Electro SAS
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/045—Details particular to contactors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/40—Branched or multiple-limb main magnetic circuits

Definitions

  • the present invention relates to an electromagnetic motor assembly belonging to an electronic device of the multipole contactor type.
  • a multipole contactor device is traditionally constituted by a housing carrying fixed contacts connected to connection terminals and in which is housed a movable contact carrier equipped with movable contact bridges cooperating with said fixed contacts.
  • the electromagnetic motor assembly actuates the contact carrier and is conventionally composed of a coil mounted on a support carcass of insulating material inserted along a mounting axis in a ferromagnetic armature fixed relative to the housing and a movable ferromagnetic armature driving the contact carrier.
  • This invention preferably relates to ferromagnetic armatures comprising inclined polar surfaces, and not straight and perpendicular to the direction of movement of the movable armature.
  • This particular geometry has the advantage of substantially increasing the total polar surface, thereby increasing the magnetic force between the two frames. It also improves the guidance of the armature to the fixed armature, but it has the disadvantage of causing balancing problems within the engine.
  • the motor unit is never perfectly symmetrical.
  • the fact that the polar surfaces of the reinforcements are inclined generates a component of the magnetic force perpendicular to the moving direction of the moving armature which tends to amplify the initial imbalance.
  • the imbalance of the motor assembly may cause parasitic movements which may lead to the contact of the two armatures, in other words to the removal of any gap.
  • the opening and closing voltages are no longer respected and the operation no longer satisfies standards.
  • Another solution is to replace the adhesive by clipping between the coil and the fixed armature, then to insert a deformable part, foam or silentbloc type, between the housing and the fixed coil / armature assembly so as to clamp the fixed armature against the coil.
  • the disadvantages of this solution are the risk of unclipping and the use of an additional part in the assembly, which generates an additional cost.
  • the holding in time of such a deformable part is also not guaranteed.
  • the object of the present invention is therefore to provide an assembly of the fixed armature with the coil which is simple to implement so as to be easy to industrialize, and which is also robust in the short and long term.
  • the solution recommended and defined by claim 1 is essential in that the fixed armature is provided with a mounting connection of the support frame.
  • the carcass must first be positioned accurately in the fixed armature before the embedding operation.
  • the support carcass is thus positioned in abutment in the fixed armature. More specifically, a first end of the support carcass is in stable support in the fixed armature in the direction of the mounting axis.
  • the embedding connection consists of deformable tabs extending ends of the fixed armature and adapted to be folded on a second end, opposite the first end, of the support frame.
  • each leg of the fixed armature is uniform, its base being deformable so as to crimp the support carcass by folding each leg coming to rest on the support frame.
  • the fixed armature has at least four legs distributed symmetrically with respect to the mounting axis.
  • the support carcass is then wedged and embedded in the fixed armature along the mounting axis.
  • the fixed armature and the movable armature have polar surfaces inclined with respect to the moving direction of the moving armature.
  • the fixed armature and the movable armature each have a base from which point-shaped branches extend, at least one of whose faces is an inclined polar surface.
  • the surfaces of the branches of the fixed and movable armatures facing each other, that is to say the polar surfaces, are inclined at the same angle with respect to the bases, and the surfaces of the arms of the fixed and movable armatures are in opposite are perpendicular to the bases.
  • the fixed armature is provided with three branches, including two end limbs with a polar surface and a central branch with two polar surfaces, the support frame being inserted along the mounting axis in the central branch.
  • the two end branches of the fixed armature each have at least two deformable tabs extending said tip of each end branch.
  • the fixed and mobile armatures consist of a plurality of identical sheets of ferromagnetic material, each sheet having the shape of the geometric shape of the corresponding armature, at least two sheets in the fixed armature having a different cut of the other plates characterized by an unciform extension of the tips of the two end branches.
  • the fixed armature has centering means with a crimping jig folding the legs on the support frame.
  • the centering means of the fixed armature consist of a groove at the outer face of its base along an axis of symmetry transverse. This groove is able to accommodate a projection present on the base of the crimping jig, so as to ensure a precise positioning of the fixed armature relative to the jig, thus guaranteeing a flatting of the lugs exactly centered on the support carcass after having positioned the latter in the fixed armature as described above.
  • the figure 1 represents an electromagnetic motor assembly used in multipolar contactors.
  • This assembly consists of a coil (4) inserted in a support carcass (3) itself embedded in a fixed ferromagnetic armature (1) cooperating with a movable ferromagnetic armature (2).
  • the two plates (1, 2) are spaced apart from each other by an air gap (E), the motor assembly being in the open position.
  • the supporting carcass (3) is composed of a central shaft (20) around which is fixed the coil (4), an upper part (21) facing the movable armature (2) and a part lower (22) bearing on the fixed armature (1).
  • the fixed armature (1) must be positioned exactly in front of the mobile armature (2) so as to keep a gap (E) constant.
  • the armatures (1, 2) have a specific geometry.
  • the fixed armature is composed of a base (7) from which three arms (8, 9, 10) extend, two of them (8, 10) being located at the ends of the base (7). ), the other (9) being central.
  • the moving armature is also composed of a base (11) from which four branches (12, 13, 14, 15) extend, including two end limbs (12, 15) and two central limbs (13, 14) looking like a fork.
  • All the branches (8, 9, 10, 12, 13, 14, 15) are pointed, providing polar surfaces (5, 6) inclined at the same angle with respect to the direction of travel (D) of the mobile armature (2).
  • the surfaces (5, 6) of the branches (8, 9, 10, 12, 13, 14, 15) of the fixed (1) and movable (2) armatures facing each other, in other words the surfaces polar, are inclined at the same angle relative to the bases (7, 11), and the surfaces of the branches (8, 9, 10, 12, 13, 14, 15) of the fixed (1) and movable (2) armatures no vis-à-vis are perpendicular to the bases (7, 11).
  • the figure 2 represents the motor assembly as described above, in the closed position.
  • the movable armature (2) is attracted by the fixed armature (1) and approaches it to a gap (e).
  • the fixed armature (1) is provided with a recess connection of the support casing (3).
  • This embedding connection consists of deformable tabs (16) extending the tips of the end branches (10, 8) of the fixed armature (1).
  • the fixed armature (1) is composed of a plurality of identical sheets of ferromagnetic material. Each sheet has the appearance of the geometric shape of the fixed armature (1). The sheets are stacked in a row, reproducing the volume of the fixed armature (2).
  • Said sheets having an unciform extension are distributed in the fixed armature (1) so as to balance the support points with the support frame (3). Indeed, so that the latter (3) is properly maintained in the fixed armature (1), and this at all points, it is necessary that it is properly positioned in the fixed armature (1) as will be explained more far in the description, and then that there are several points of attachment between the two parts (3, 1), preferably four points of attachment distributed at the four ends of the assembly formed by the carcass (3) and the fixed armature (1).
  • these attachment points consist for example of at least two tabs (16) on two sheets placed respectively at the beginning and at the end of the row of metal plates constituting the fixed armature (1).
  • At least two adjacent sheets located at the ends of the frame (1) are provided with tabs (16).
  • the overall result is a fixed armature (1) provided with four pairs of legs (16) adapted to be folded down on the support carcass (3) in accordance with the figure 4 .
  • Each lug (16) of the fixed armature (1) is uniform, its base being deformable so as to crimp the upper part (21) of the support carcass (3) by folding each of the lugs (16) of s' press on the upper part (21) of the supporting frame (3).
  • the support frame (3) is plugged into the central branch (9) of the fixed armature (1) along a mounting axis (X).
  • This mounting axis (X) is also an axis of symmetry common to the two parts (1, 3).
  • the lower part (22) of the supporting carcass (3) rests on a flat surface (23) of the base (7) of the fixed armature (1) in a bearing direction parallel to the mounting axis ( X).
  • the positioning of the carcass (3) in the fixed armature (1) along the axis (Y) as shown in FIG. figure 4 , perpendicular to the axes (X) and (Z), is less important because the operation of the motor is not sensitive in the direction of this axis (Y).
  • the thickness of the plates constituting the reinforcements being variable, it is all the more difficult to accurately position the carcass (3) in the armature (1) along this axis (Y).
  • a groove (17) is present on the underside of the base (7) of the fixed armature (1) along its transverse axis of symmetry.
  • This groove (17) coincides with a projection on the base of the crimping jig, and then allows the centering of the fixed armature (1) on the jig along the axis (Z).

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

La présente invention concerne un ensemble moteur électromagnétique appartenant à un appareil électronique de type contacteur multipolaire.The present invention relates to an electromagnetic motor assembly belonging to an electronic device of the multipole contactor type.

Un appareil contacteur multipolaire est traditionnellement constitué par un boîtier portant des contacts fixes reliés à des bornes de raccordement et dans lequel est logé un porte-contacts mobile équipé de ponts de contacts mobiles coopérant avec lesdits contacts fixes.A multipole contactor device is traditionally constituted by a housing carrying fixed contacts connected to connection terminals and in which is housed a movable contact carrier equipped with movable contact bridges cooperating with said fixed contacts.

L'ensemble moteur électromagnétique actionne le porte-contacts et est classiquement composé d'une bobine montée sur une carcasse de support en matière isolante insérée selon un axe de montage dans une armature ferromagnétique fixe par rapport au boîtier et d'une armature ferromagnétique mobile entraînant le porte-contacts.The electromagnetic motor assembly actuates the contact carrier and is conventionally composed of a coil mounted on a support carcass of insulating material inserted along a mounting axis in a ferromagnetic armature fixed relative to the housing and a movable ferromagnetic armature driving the contact carrier.

En fonctionnement normal, lorsque l'armature fixe est excitée dans des conditions de fermeture telles que définies par la norme actuelle (soit pour simplifier 85% de la tension réseau, à 40°C), elle attire l'armature mobile jusqu'à un entrefer « e ». Inversement, lorsque l'armature fixe n'est excitée qu'à une tension dite d'ouverture, située sous un seuil de tension défini par la norme actuelle (soit 20% de la tension réseau, à 5°C), l'armature mobile doit revenir à sa position de repos.In normal operation, when the fixed armature is energized under closing conditions as defined by the current standard (ie to simplify 85% of the mains voltage, at 40 ° C), it attracts the moving armature to a gap "e". Conversely, when the fixed armature is energized only at a so-called opening voltage, located below a voltage threshold defined by the current standard (ie 20% of the mains voltage, at 5 ° C.), the armature mobile must return to its rest position.

Cette invention concerne de préférence les armatures ferromagnétiques comprenant des surfaces polaires inclinées, et non pas droites et perpendiculaires à la direction de déplacement de l'armature mobile. Cette géométrie particulière présente l'avantage d'agrandir sensiblement la surface polaire totale, augmentant ce de fait la force magnétique entre les deux armatures. Elle permet également d'améliorer le guidage de l'armature mobile vers l'armature fixe, mais elle présente l'inconvénient d'engendrer des problèmes d'équilibrage au sein du moteur.This invention preferably relates to ferromagnetic armatures comprising inclined polar surfaces, and not straight and perpendicular to the direction of movement of the movable armature. This particular geometry has the advantage of substantially increasing the total polar surface, thereby increasing the magnetic force between the two frames. It also improves the guidance of the armature to the fixed armature, but it has the disadvantage of causing balancing problems within the engine.

De manière générale, il est évident que l'ensemble moteur n'est jamais parfaitement symétrique. Le fait que les surfaces polaires des armatures soient inclinées engendre une composante de la force magnétique perpendiculaire à la direction du déplacement de l'armature mobile qui tend à amplifier le déséquilibre initial. Sans contrainte de fixation et de guidage entre l'armature fixe et la bobine, le déséquilibre de l'ensemble moteur risque de provoquer des mouvements parasites qui peuvent conduire au contact des deux armatures, en d'autres termes à la suppression de tout entrefer. En conséquence, les tensions d'ouverture et de fermeture ne sont plus respectées et le fonctionnement ne répond plus de manière garantie aux normes.In general, it is obvious that the motor unit is never perfectly symmetrical. The fact that the polar surfaces of the reinforcements are inclined generates a component of the magnetic force perpendicular to the moving direction of the moving armature which tends to amplify the initial imbalance. Without any binding and guiding constraint between the fixed armature and the coil, the imbalance of the motor assembly may cause parasitic movements which may lead to the contact of the two armatures, in other words to the removal of any gap. As a result, the opening and closing voltages are no longer respected and the operation no longer satisfies standards.

Une solution consiste à fixer de façon hyperstatique l'armature fixe et la bobine dans un boîtier fermé par collage. Les inconvénients d'une telle solution sont nombreux. Tout d'abord, ce montage doit être réalisé en force, et ne peut donc pas être effectué manuellement par un opérateur. Ensuite, la colle est un produit difficile à gérer en fabrication puisqu'elle ne peut pas être utilisée sur une chaîne de montage automatique. Enfin, la colle est un produit qui vieillit mal, le collage a tendance à se rompre, rendant ce mode de fixation peu fiable à long terme.One solution is to fix in a hyperstatic manner the fixed armature and the coil in a closed case by gluing. The disadvantages of such a solution are numerous. First, this assembly must be made in force, and can not be done manually by an operator. Then, the glue is a difficult product to handle in manufacturing since it can not be used on an automatic assembly line. Finally, glue is a product that ages badly, gluing has a tendency to break, making this mode of fixation unreliable in the long run.

Une autre solution consiste à remplacer la colle par un clipsage entre la bobine et l'armature fixe, puis à insérer une pièce déformable, de type mousse ou silentbloc, entre le boîtier et l'ensemble bobine / armature fixe de manière à plaquer l'armature fixe contre la bobine. Les inconvénients de cette solution sont le risque de déclipsage et l'utilisation d'une pièce supplémentaire dans l'assemblage, qui engendre un coût supplémentaire. De plus, la tenue dans le temps d'une telle pièce déformable n'est pas non plus garantie.Another solution is to replace the adhesive by clipping between the coil and the fixed armature, then to insert a deformable part, foam or silentbloc type, between the housing and the fixed coil / armature assembly so as to clamp the fixed armature against the coil. The disadvantages of this solution are the risk of unclipping and the use of an additional part in the assembly, which generates an additional cost. In addition, the holding in time of such a deformable part is also not guaranteed.

Le document EP 1 978 536 A1 décrit un ensemble selon le préambule de la revendication 1.The document EP 1 978 536 A1 describes an assembly according to the preamble of claim 1.

L'objectif de la présente invention est donc de proposer un assemblage de l'armature fixe avec la bobine qui soit simple de mise en oeuvre de manière à pouvoir l'industrialiser facilement, et qui soit également robuste à court et à long terme.The object of the present invention is therefore to provide an assembly of the fixed armature with the coil which is simple to implement so as to be easy to industrialize, and which is also robust in the short and long term.

A cet effet, la solution préconisée et définie par la revendication 1 se caractérise à titre essentiel en ce que l'armature fixe est dotée d'une liaison d'encastrement de la carcasse de support.For this purpose, the solution recommended and defined by claim 1 is essential in that the fixed armature is provided with a mounting connection of the support frame.

Pour que l'encastrement selon l'invention soit réalisable, c'est-à-dire pour supprimer tout jeu de montage et de fonctionnement entre l'armature fixe et la carcasse de support selon l'axe de montage, la carcasse doit au préalable être positionnée de manière précise dans l'armature fixe avant l'opération d'encastrement.So that the embedding according to the invention is feasible, that is to say to remove any set of mounting and operating between the fixed armature and the support carcass along the mounting axis, the carcass must first be positioned accurately in the fixed armature before the embedding operation.

La carcasse de support est ainsi positionnée en butée dans l'armature fixe. Plus précisément, une première extrémité de la carcasse de support est en appui stable dans l'armature fixe dans la direction de l'axe de montage.The support carcass is thus positioned in abutment in the fixed armature. More specifically, a first end of the support carcass is in stable support in the fixed armature in the direction of the mounting axis.

La liaison d'encastrement consiste en des pattes déformables prolongeant des extrémités de l'armature fixe et aptes à être rabattues sur une seconde extrémité, opposée à la première extrémité, de la carcasse de support.The embedding connection consists of deformable tabs extending ends of the fixed armature and adapted to be folded on a second end, opposite the first end, of the support frame.

Selon une configuration possible, chaque patte de l'armature fixe est unciforme, sa base étant déformable de manière à sertir la carcasse de support par rabattement de chacune des pattes venant s'appuyer sur la carcasse de support. L'armature fixe est dotée d'au moins quatre pattes réparties symétriquement par rapport à l'axe de montage.According to one possible configuration, each leg of the fixed armature is uniform, its base being deformable so as to crimp the support carcass by folding each leg coming to rest on the support frame. The fixed armature has at least four legs distributed symmetrically with respect to the mounting axis.

Cette solution implique uniquement une modification de forme de l'armature fixe. Aucune autre pièce n'est nécessaire pour assembler l'armature fixe à la carcasse de support, et a fortiori à la bobine.This solution involves only a modification of the shape of the fixed armature. No other parts are needed to assemble the fixed frame to the support frame, let alone the coil.

La carcasse de support est alors calée et encastrée dans l'armature fixe selon l'axe de montage.The support carcass is then wedged and embedded in the fixed armature along the mounting axis.

Selon une possibilité, l'armature fixe et l'armature mobile présentent des surfaces polaires inclinées par rapport à la direction de déplacement de l'armature mobile.According to one possibility, the fixed armature and the movable armature have polar surfaces inclined with respect to the moving direction of the moving armature.

De préférence, l'armature fixe et l'armature mobile présentent chacune une base à partir de laquelle s'étendent des branches en forme de pointe, dont l'une au moins des faces est une surface polaire inclinée. Les surfaces des branches des armatures fixe et mobile en vis-à-vis, c'est-à-dire les surfaces polaires, sont inclinées d'un même angle par rapport aux bases, et les surfaces des branches des armatures fixe et mobile non en vis-à-vis sont perpendiculaires aux bases.Preferably, the fixed armature and the movable armature each have a base from which point-shaped branches extend, at least one of whose faces is an inclined polar surface. The surfaces of the branches of the fixed and movable armatures facing each other, that is to say the polar surfaces, are inclined at the same angle with respect to the bases, and the surfaces of the arms of the fixed and movable armatures are in opposite are perpendicular to the bases.

Concrètement, l'armature fixe est dotée de trois branches, dont deux branches d'extrémité à une surface polaire et une branche centrale à deux surfaces polaires, la carcasse de support étant enfichée selon l'axe de montage dans la branche centrale.Specifically, the fixed armature is provided with three branches, including two end limbs with a polar surface and a central branch with two polar surfaces, the support frame being inserted along the mounting axis in the central branch.

Les deux branches d'extrémité de l'armature fixe présentent chacune au moins deux pattes déformables prolongeant ladite pointe de chaque branche d'extrémité.The two end branches of the fixed armature each have at least two deformable tabs extending said tip of each end branch.

Les armatures fixe et mobile sont constituées d'une pluralité de tôles identiques en matériau ferromagnétique, chaque tôle ayant l'allure de la forme géométrique de l'armature correspondante, au moins deux tôles dans l'armature fixe présentant une découpe différente des autres tôles caractérisée par une prolongation unciforme de la pointe des deux branches d'extrémité.The fixed and mobile armatures consist of a plurality of identical sheets of ferromagnetic material, each sheet having the shape of the geometric shape of the corresponding armature, at least two sheets in the fixed armature having a different cut of the other plates characterized by an unciform extension of the tips of the two end branches.

Par ailleurs, l'armature fixe présente des moyens de centrage avec un gabarit de sertissage rabattant les pattes sur la carcasse de support.Furthermore, the fixed armature has centering means with a crimping jig folding the legs on the support frame.

Les moyens de centrage de l'armature fixe consistent en une rainure au niveau de la face extérieure de sa base selon un axe de symétrie transversal. Cette rainure est apte à accueillir une saillie présente sur le socle du gabarit de sertissage, de manière à assurer un positionnement précis de l'armature fixe par rapport au gabarit, garantissant ainsi un rabattement des pattes exactement centré sur la carcasse de support après avoir positionné cette dernière dans l'armature fixe comme décrit précédemment.The centering means of the fixed armature consist of a groove at the outer face of its base along an axis of symmetry transverse. This groove is able to accommodate a projection present on the base of the crimping jig, so as to ensure a precise positioning of the fixed armature relative to the jig, thus guaranteeing a flatting of the lugs exactly centered on the support carcass after having positioned the latter in the fixed armature as described above.

Cette solution de liaison d'encastrement est non seulement robuste, mais également industrialisable puisqu'elle ne nécessite pas de colle.This embedding connection solution is not only robust, but also industrializable since it does not require glue.

L'invention va à présent être décrite plus en détail, en référence aux figures annexées, pour lesquelles :

  • la figure 1 est une vue en coupe d'un ensemble moteur électromagnétique en position ouverte selon une configuration possible;
  • la figure 2 représente l'ensemble moteur selon la figure 1 en position fermée;
  • la figure 3 représente la partie fixe de l'ensemble moteur selon la figure 1 avant le sertissage de la carcasse de support;
  • la figure 4 montre la partie fixe de l'ensemble moteur selon la figure 1 après le sertissage de la carcasse de support;
The invention will now be described in more detail, with reference to the appended figures, for which:
  • the figure 1 is a sectional view of an electromagnetic motor assembly in an open position in a possible configuration;
  • the figure 2 represents the motor assembly according to the figure 1 in closed position;
  • the figure 3 represents the fixed part of the motor assembly according to the figure 1 before crimping the support carcass;
  • the figure 4 shows the fixed part of the motor assembly according to the figure 1 after crimping the support carcass;

La figure 1 représente un ensemble moteur électromagnétique utilisé dans des contacteurs multipolaires. Cet ensemble est constitué d'une bobine (4) insérée dans une carcasse de support (3) elle-même encastrée dans une armature ferromagnétique fixe (1) coopérant avec une armature ferromagnétique mobile (2).The figure 1 represents an electromagnetic motor assembly used in multipolar contactors. This assembly consists of a coil (4) inserted in a support carcass (3) itself embedded in a fixed ferromagnetic armature (1) cooperating with a movable ferromagnetic armature (2).

Sur cette figure, les deux armatures (1, 2) sont distantes l'une de l'autre d'un entrefer (E), l'ensemble moteur étant en position ouverte.In this figure, the two plates (1, 2) are spaced apart from each other by an air gap (E), the motor assembly being in the open position.

La carcasse de support (3) est composée d'un fût central (20) autour duquel est fixée la bobine (4), d'une partie supérieure (21) en regard de l'armature mobile (2) et d'une partie inférieure (22) en appui sur l'armature fixe(1).The supporting carcass (3) is composed of a central shaft (20) around which is fixed the coil (4), an upper part (21) facing the movable armature (2) and a part lower (22) bearing on the fixed armature (1).

L'armature fixe (1) doit être positionnée exactement en face de l'armature mobile (2) de manière à garder un entrefer (E) constant.The fixed armature (1) must be positioned exactly in front of the mobile armature (2) so as to keep a gap (E) constant.

Dans la configuration présentée, les armatures (1, 2) ont une géométrie spécifique.In the presented configuration, the armatures (1, 2) have a specific geometry.

L'armature fixe est composée d'une base (7) à partir de laquelle s'étend trois branches (8, 9, 10), deux d'entre-elles (8, 10) étant situées aux extrémités de la base (7), l'autre (9) étant centrale.The fixed armature is composed of a base (7) from which three arms (8, 9, 10) extend, two of them (8, 10) being located at the ends of the base (7). ), the other (9) being central.

L'armature mobile est également composée d'une base (11) d'où s'étendent quatre branches (12, 13, 14, 15), dont deux branches d'extrémité (12, 15) et deux branches centrales (13, 14) ayant l'allure d'une fourche.The moving armature is also composed of a base (11) from which four branches (12, 13, 14, 15) extend, including two end limbs (12, 15) and two central limbs (13, 14) looking like a fork.

Toutes les branches (8, 9, 10, 12, 13, 14, 15) sont en forme de pointe, offrant des surfaces polaires (5, 6) inclinées d'un même angle par rapport à la direction de déplacement (D) de l'armature mobile (2).All the branches (8, 9, 10, 12, 13, 14, 15) are pointed, providing polar surfaces (5, 6) inclined at the same angle with respect to the direction of travel (D) of the mobile armature (2).

Plus précisément, les surfaces (5, 6) des branches (8, 9, 10, 12, 13, 14, 15) des armatures fixe (1) et mobile (2) en vis à vis, en d'autres termes les surfaces polaires, sont inclinées d'un même angle par rapport aux bases (7, 11), et les surfaces des branches (8, 9,10,12,13,14,15) des armatures fixe (1) et mobile (2) non en vis-à-vis sont perpendiculaires aux bases (7, 11).More precisely, the surfaces (5, 6) of the branches (8, 9, 10, 12, 13, 14, 15) of the fixed (1) and movable (2) armatures facing each other, in other words the surfaces polar, are inclined at the same angle relative to the bases (7, 11), and the surfaces of the branches (8, 9, 10, 12, 13, 14, 15) of the fixed (1) and movable (2) armatures no vis-à-vis are perpendicular to the bases (7, 11).

La figure 2 représente l'ensemble moteur tel que décrit ci-dessus, en position fermée. Dans ce cas, l'armature mobile (2) est attirée par l'armature fixe (1) et s'en approche jusqu' à un entrefer (e).The figure 2 represents the motor assembly as described above, in the closed position. In this case, the movable armature (2) is attracted by the fixed armature (1) and approaches it to a gap (e).

Pour garantir un positionnement relatif exact des armatures (1, 2), il est indispensable de garantir un encastrement de l'ensemble bobine (4) / carcasse de support (3) dans l'armature fixe (1).In order to ensure exact relative positioning of the reinforcements (1, 2), it is essential to ensure that the coil (4) / support carcass (3) is embedded in the fixed armature (1).

A cet effet, comme illustré sur la figure 3, l'armature fixe (1) est dotée d'une liaison d'encastrement de la carcasse de support (3).For this purpose, as illustrated on the figure 3 , the fixed armature (1) is provided with a recess connection of the support casing (3).

Cette liaison d'encastrement consiste en des pattes (16) déformables prolongeant les pointes des branches d'extrémité (10, 8) de l'armature fixe (1).This embedding connection consists of deformable tabs (16) extending the tips of the end branches (10, 8) of the fixed armature (1).

L'armature fixe (1) est composée d'une pluralité de tôles identiques en matériau ferromagnétique. Chaque tôle a l'allure de la forme géométrique de l'armature fixe (1). Les tôles sont empilées en rangée, reproduisant le volume de l'armature fixe (2).The fixed armature (1) is composed of a plurality of identical sheets of ferromagnetic material. Each sheet has the appearance of the geometric shape of the fixed armature (1). The sheets are stacked in a row, reproducing the volume of the fixed armature (2).

Lesdites tôles présentant une prolongation unciforme sont réparties dans l'armature fixe (1) de manière à équilibrer les points d'appui avec la carcasse de support (3). En effet, pour que cette dernière (3) soit correctement maintenue dans l'armature fixe (1), et ceci en tout point, il est nécessaire qu'elle soit correctement positionnée dans l'armature fixe (1) comme cela sera expliqué plus loin dans la description, et ensuite qu'il y ait plusieurs points d'accroche entre les deux pièces (3, 1), de préférence quatre points d'accroche répartis aux quatre extrémités de l'ensemble formé par la carcasse (3) et l'armature fixe (1).Said sheets having an unciform extension are distributed in the fixed armature (1) so as to balance the support points with the support frame (3). Indeed, so that the latter (3) is properly maintained in the fixed armature (1), and this at all points, it is necessary that it is properly positioned in the fixed armature (1) as will be explained more far in the description, and then that there are several points of attachment between the two parts (3, 1), preferably four points of attachment distributed at the four ends of the assembly formed by the carcass (3) and the fixed armature (1).

En d'autres termes, ces points d'accroche consistent par exemple en au moins deux pattes (16) sur deux tôles placées respectivement au début et à la fin de la rangée de tôles composant l'armature fixe (1).In other words, these attachment points consist for example of at least two tabs (16) on two sheets placed respectively at the beginning and at the end of the row of metal plates constituting the fixed armature (1).

Afin que la liaison d'encastrement soit plus robuste, au moins deux tôles adjacentes situées aux extrémités de l'armature (1) sont dotées des pattes (16). II en résulte globalement une armature fixe (1) dotée de quatre paires de pattes (16) aptes à être rabattues sur la carcasse de support (3) conformément à la figure 4.So that the embedding connection is more robust, at least two adjacent sheets located at the ends of the frame (1) are provided with tabs (16). The overall result is a fixed armature (1) provided with four pairs of legs (16) adapted to be folded down on the support carcass (3) in accordance with the figure 4 .

Chaque patte (16) de l'armature fixe (1) est unciforme, sa base étant déformable de manière à sertir la partie supérieure (21) de la carcasse de support (3) par rabattement de chacune des pattes (16) venant s'appuyer sur la partie supérieure (21) de la carcasse de support (3).Each lug (16) of the fixed armature (1) is uniform, its base being deformable so as to crimp the upper part (21) of the support carcass (3) by folding each of the lugs (16) of s' press on the upper part (21) of the supporting frame (3).

Comme évoqué précédemment, il est également indispensable de positionner correctement la carcasse de support (3) dans l'armature fixe (1) avant le sertissage.As mentioned above, it is also essential to correctly position the support frame (3) in the fixed armature (1) before crimping.

Concrètement, la carcasse de support (3) est enfichée dans la branche centrale (9) de l'armature fixe (1) selon un axe de montage (X). Cet axe de montage (X) est également un axe de symétrie commun aux deux pièces (1, 3).Concretely, the support frame (3) is plugged into the central branch (9) of the fixed armature (1) along a mounting axis (X). This mounting axis (X) is also an axis of symmetry common to the two parts (1, 3).

La partie inférieure (22) de la carcasse de support (3) repose sur une surface plane (23) de la base (7) de l'armature fixe (1) dans une direction d'appui parallèle à l'axe de montage (X).The lower part (22) of the supporting carcass (3) rests on a flat surface (23) of the base (7) of the fixed armature (1) in a bearing direction parallel to the mounting axis ( X).

Le positionnement de la carcasse (3) dans l'armature fixe (1) selon l'axe (Y) tel que représenté sur la figure 4, perpendiculaire aux axes (X) et (Z), a moins d'importance car le fonctionnement du moteur n'est pas sensible dans la direction de cet axe (Y). L'épaisseur des tôles constituant les armatures étant variable, il est d'autant plus difficile de positionner précisément la carcasse (3) dans l'armature (1) selon cet axe (Y).The positioning of the carcass (3) in the fixed armature (1) along the axis (Y) as shown in FIG. figure 4 , perpendicular to the axes (X) and (Z), is less important because the operation of the motor is not sensitive in the direction of this axis (Y). The thickness of the plates constituting the reinforcements being variable, it is all the more difficult to accurately position the carcass (3) in the armature (1) along this axis (Y).

Pour que le sertissage soit optimum, en d'autres termes pour que les pattes (16) soient rabattues correctement sur la carcasse (3), il est enfin nécessaire de centrer l'armature fixe (1) par rapport à la carcasse (3) selon l'axe (Z) au moyen d'un gabarit de sertissage.So that crimping is optimum, in other words so that the lugs (16) are folded correctly on the carcass (3), it is finally necessary to center the fixed armature (1) relative to the carcass (3) along the axis (Z) by means of a crimping jig.

A cet effet, une rainure (17) est présente sur la face inférieure de la base (7) de l'armature fixe (1), selon son axe de symétrie transversal. Cette rainure (17) coïncide avec une saillie sur le socle du gabarit de sertissage, et permet alors le centrage de l'armature fixe (1) sur le gabarit selon l'axe (Z).For this purpose, a groove (17) is present on the underside of the base (7) of the fixed armature (1) along its transverse axis of symmetry. This groove (17) coincides with a projection on the base of the crimping jig, and then allows the centering of the fixed armature (1) on the jig along the axis (Z).

L'invention précédente a été décrite au moyen d'un exemple préférentiel, qui ne peut toutefois être considéré comme limitatif. Les variantes et les modifications de forme qui entrent dans le contenu englobé par les revendications annexées font partie de l'invention.The foregoing invention has been described by means of a preferred example, which however can not be considered as limiting. Variations and modifications of form which fall within the content encompassed by the appended claims form part of the invention.

Claims (12)

  1. Electromagnetic motor assembly for multi polar contactor type equipment consisting of a housing holding some fixed contacts linked to some connection terminals and in which is housed a mobile contact support equipped with mobile contact shunts acting in liaison with the said fixed contacts, the said electromagnetic motor assembly operating this contact support and being composed of a relay (4) mounted on a supporting frame (3) made from an isolating material inserted according to a mounting axis (X) into a ferromagnetic armature (1) fixed in relation to the housing and of a mobile ferromagnetic armature (2) driving the contact support,
    the fixed armature (1) being equipped with a flush mounted connection in the support frame (3),
    characterized in that the said flush connection consists of deformable tabs (16) extending from the ends of the fixed armature (1) and able to be folded over onto the support frame (3).
  2. Electromagnetic motor assembly according to the preceding claim, characterized in that a first extremity (22) of the support frame (3) is supported stably in the fixed armature (1), the said flush connection consisting of deformable tabs (16) extending from the ends of the fixed frame (1) and able to be folded over onto a second end (21), opposite the first end (22), of the support frame (3).
  3. Electromagnetic motor assembly according to the preceding claim, characterized in that each tab (16) of the fixed armature (1) is unciform, its base being deformable in order to come out of the support frame (3) by drawing back each of the tabs (16) which press on the support frame (3).
  4. Electromagnetic motor assembly according to the preceding claim, characterized in that the fixed armature (1) is equipped with at least four tabs (16) placed symmetrically in relation to the mounting axis (X).
  5. Electromagnetic motor assembly according to one of the preceding claims, characterized in that the fixed armature (1) and the mobile armature (2) have polar surfaces (5, 6) inclined in relation to the direction of movement (D) of the mobile armature (2).
  6. Electromagnetic motor assembly according to the preceding claim, characterized in that the fixed armature (1) and the mobile armature (2) each have a base (7, 11) from which extend arms (8, 9, 10, 12, 13, 14, 15) in the shape of a point, of which at least one of the faces is an inclined polar surface (5, 6).
  7. Electromagnetic motor assembly according to the preceding claim, characterized in that the surfaces of the arms (8, 9, 10, 12, 13, 14, 15) of the fixed (1) and mobile (2) armatures facing each other are inclined at the same angle in relation to the bases (7, 11), and the surfaces of the arms of the fixed (1) and mobile (2) armatures not facing each other are perpendicular to the bases (7, 11).
  8. Electromagnetic motor assembly according to the preceding claim, characterized in that the fixed armature (1) is equipped with three arms (8, 9, 10), of which two end arms (8, 10) have one polar surface (5) and one central arm (9) has two polar surfaces (5), the support frame (3) being inserted in accordance with the mounting axis (X) into the central arm (9).
  9. Electromagnetic motor assembly according to the preceding claim, characterized in that the two end arms (8, 10) of the fixed armature (1) each have at least two deformable tabs (16) extending from the said point of each end arm (8, 10).
  10. Electromagnetic motor assembly according to the preceding claim, characterized in that the fixed (1) and the mobile (2) armatures are formed from a number of identical plates made of a ferromagnetic material, each plate having the same geometric form as the corresponding armature, at least two plates in the fixed armature (1) having a cut-out different from the other plates characterized by a unciform extension on the point of the two end arms (8, 10).
  11. Electromagnetic motor assembly according to claims 2 to 10, characterized in that the fixed armature (1) has a means of centralizing with an insertion gauge folding the tabs (16) onto the support frame (3).
  12. Electromagnetic motor assembly according to the preceding claim, characterized in that the means of centralizing the fixed armature (1) consists of a groove (17) in the exterior face of its base (7) in accordance with the transversal axis of symmetry.
EP20100306065 2010-09-30 2010-09-30 Assembly of a motor of a multipolar contactor Active EP2437278B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100306065 EP2437278B1 (en) 2010-09-30 2010-09-30 Assembly of a motor of a multipolar contactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100306065 EP2437278B1 (en) 2010-09-30 2010-09-30 Assembly of a motor of a multipolar contactor

Publications (2)

Publication Number Publication Date
EP2437278A1 EP2437278A1 (en) 2012-04-04
EP2437278B1 true EP2437278B1 (en) 2013-05-15

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Application Number Title Priority Date Filing Date
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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7103106U (en) * 1971-01-28 1972-07-06 Siemens Ag Electromagnetic switching device
FR2406885A1 (en) * 1977-10-18 1979-05-18 Telemecanique Electrique ELECTRO-MAGNET FOR CONTACTOR SUPPLIED WITH DIRECT CURRENT
JPS5469344U (en) * 1977-10-26 1979-05-17
DE3733895A1 (en) * 1987-10-07 1989-04-27 Asea Brown Boveri Electrical switching apparatus having an electromagnetic switch drive
EP1978536B1 (en) * 2007-03-28 2012-11-28 Siemens Aktiengesellschaft Electromagnetic switching device
JP4803206B2 (en) * 2008-04-24 2011-10-26 パナソニック電工株式会社 Electromagnet for relay

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