EP2411995A1 - Magnetothermal release mechanism - Google Patents

Magnetothermal release mechanism

Info

Publication number
EP2411995A1
EP2411995A1 EP10715967A EP10715967A EP2411995A1 EP 2411995 A1 EP2411995 A1 EP 2411995A1 EP 10715967 A EP10715967 A EP 10715967A EP 10715967 A EP10715967 A EP 10715967A EP 2411995 A1 EP2411995 A1 EP 2411995A1
Authority
EP
European Patent Office
Prior art keywords
pallet
magnetothermic
cylinder head
terminal
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10715967A
Other languages
German (de)
French (fr)
Other versions
EP2411995B1 (en
Inventor
Francis Deckert
Loïc Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hager Electro SAS
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
Publication of EP2411995A1 publication Critical patent/EP2411995A1/en
Application granted granted Critical
Publication of EP2411995B1 publication Critical patent/EP2411995B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H01H71/405—Combined electrothermal and electromagnetic mechanisms in which a bimetal forms the inductor for the electromagnetic mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections

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

Abstract

Magnetothermal release mechanism for a circuit-breaker electrical cutoff apparatus, comprising a magnetic circuit with a mobile vane (2) that is pivotable relative to a fixed cylinder head (1) forming the rest of the magnetic circuit, said cylinder head (1) having a U-shaped cross-section and surrounding a thermal bimetal switch (3) that is electrically connected to a terminal (4) of the apparatus, a return means (9) retaining the vane (2) in an open position relative to the cylinder head (1) in the absence of a short-circuit current. The terminal (4) and the cylinder head (1) are attached to each other and to an intermediate piece (6) having pivotable bearings (7, 7) for the vane (2), the assembly forming a subassembly in a single piece.

Description

Déclencheur magnétothermique. Magnetothermic tripping device.
La présente invention concerne d'une part un actionneur ou déclencheur magnétothermique par exemple pour appareil électrique de type disjoncteur, permettant la coupure dtau moins une ligne en cas de court-circuit ou de surcharge dans un circuit, et d'autre part les appareils qui en sont munis.The present invention relates on the one hand to a magnetothermal actuator or trigger, for example for a circuit-breaker type electrical appliance, allowing the cut-off of at least one line in the event of a short-circuit or overload in a circuit, and on the other hand the appliances which are equipped.
Les disjoncteurs de protection de lignes comportent, par ligne et entre deux bornes de connexion, un contact fixe et un contact mobile pouvant être séparés notamment par action d'un actionneur magnétothermique sur une serrure mécanique de déclenchement.The line protection circuit breakers comprise, by line and between two connection terminals, a fixed contact and a movable contact that can be separated in particular by the action of a magnetothermal actuator on a mechanical trigger lock.
La partie magnétique de Itàctionneur comprend essentiellement un élément conducteur réalisant Itlhduction, qui coopère avec un circuit magnétique à culasse fixe et partie mobile jouant le rôle dSrgane déclencheur ou coopérant avec un percuteur pour assurer, en cas de court- circuit, la disjonction de Itappareil par basculement de la serrure mécanique qui provoque IBuverture du contact mobile.The magnetic part of the actuator essentially comprises a conductive element producing the induction, which cooperates with a magnetic circuit with a fixed yoke and a moving part acting as a triggering organ or cooperating with a striker to ensure, in the event of a short-circuit, the disruption of the device by tilting of the mechanical lock which causes IBuverture of the moving contact.
Le déclenchement thermique est classiquement réalisé par un bilame, à chauffage direct ou indirect. Dans certains actionneurs magnétothermiques, en particulier dans les appareils électriques à boîtiers moulés dans lesquels chaque ligne en est équipée, le bilame parcouru par un courant sert de conducteur dtlhduction du circuit magnétique. En cas de court circuit, le courant est suffisant pour que la force magnétique induite dans le circuit magnétique provoque un déplacement de sa partie mobile - à IBncontre de moyens de rappel - permettant le déclenchement de la serrure. Ces moyens de rappel sont prévus pour que ladite partie mobile, constituée en général dDine palette rotative pour ce type dtappareils, revienne en position de repos à distance de la serrure lorsque le courant parcourant le bilame est inférieur à un seuil signifiant clairement IBxistence d-ûn court-circuit. Les déclencheurs magnétothermiques sont par exemple raccordés entre le contact mobile de chaque ligne et une borne de sortie coopérant avec un dispositif de connexion de type à cage et vis. La portion de circuit est alors en fait électriquement constituée du contact mobile, du bilame et de la borne de sortie, qui sont raccordés par exemple par des tresses souples soudées à leurs extrémités aux composant quBlles relient. Ltàctionneur magnétique est disposé au niveau du bilame de façon que ce dernier puisse jouer son rôle d[Ihducteur.Thermal tripping is conventionally carried out by a bimetallic strip, with direct or indirect heating. In some magnetothermic actuators, particularly in electrical appliances with molded housings in which each line is equipped, the bimetallic traversed by a current serves as a transducer of the magnetic circuit. In the event of a short circuit, the current is sufficient for the magnetic force induced in the magnetic circuit to cause a displacement of its moving part - against interference with biasing means - for triggering the lock. These return means are provided so that said movable part, generally consisting of a rotary pallet for this type of apparatus, returns to the rest position away from the lock when the current flowing through the bimetallic strip is below a threshold which clearly signifies the existence of short circuit. The magnetothermal trip units are for example connected between the movable contact of each line and an output terminal cooperating with a connection device of cage and screw type. The circuit portion is then in fact electrically constituted by the movable contact, the bimetallic strip and the output terminal, which are connected for example by flexible braids welded at their ends to the components they connect. The magnetic actuator is arranged at the bimetallic level so that the bimetal can play its role as a generator.
La nécessité de faire coopérer les différents composants des fonctions magnétique et thermique, qui doivent de surcroît être imbriqués sans se gêner pour pouvoir fonctionner ensemble, conduit à des problématiques de conception à chaque fois particulières, fonctions par exemple du contexte technique (calibre des appareils, volume disponible dans les boîtiers..), de nécessités industrielles (degré dtâutomatisation du montage..) et évidemment économiques.The need to cooperate the various components of the magnetic and thermal functions, which must moreover be nested without hindrance to be able to work together, leads to problems of design each time special, functions for example of the technical context (caliber devices, volume available in the housings ..), of industrial necessities (degree of automation of the assembly ..) and obviously economic.
Dans la présente invention, destinée à des appareils dits à boîtier moulé dans lesquels chaque ligne est équipée dDin actionneur magnétothermique, celui-ci comporte classiquement un circuit magnétique à palette mobile pivotant par rapport à une culasse fixe formant le reste du circuit magnétique, ladite culasse étant à section en U et entourant un bilame thermique électriquement relié à une borne de Itappareil, des moyens de rappel maintenant la palette en position ouverte par rapport à la culasse en Itâbsence de courant de court-circuit.In the present invention, for so-called molded-case devices in which each line is equipped with a magnetothermic actuator, it conventionally comprises a movable pallet magnetic circuit pivotable with respect to a fixed yoke forming the remainder of the magnetic circuit, said cylinder head having a U-shaped section and surrounding a thermal bimetal electrically connected to a terminal of Itappareil, biasing means maintaining the pallet in the open position with respect to the yoke in the absence of short circuit current.
Selon Itlhvention, à titre essentiel, la borne et la culasse sont fixées IDine à Itâutre et à une pièce intermédiaire dotée de paliers de pivotement pour la palette, IBnsemble formant un sous-ensemble dDin seul tenant. Ltàvantage d-ûn tel sous-ensemble est notamment patent en phase d[-hdustrialisation, puisque ledit sous-ensemble peut être prémonté puis manipulé en une seule opération au moment du montage.According to the invention, essentially, the terminal and the cylinder head are fixed to the other and to an intermediate piece provided with pivot bearings for the pallet, the assembly forming a single-unit subassembly. The advantage of such a subset is particularly patent in the phase of -hdustrialisation, since said subassembly can be preassembled and then handled in a single operation at the time of assembly.
La culasse fixe nBst pas directement reliée à la palette mobile, qui est articulée à la pièce intermédiaire. Si la palette était directement articulée à la culasse, une fraction du champ magnétique passerait par les paliers métalliques, et ne serait pas directement disponible dans IBntrefer pour actionner la palette. Cette séparation magnétique entre la culasse fixe et la palette mobile est réalisée au moyen de ladite pièce intermédiaire. Celle-ci est constituée dDin matériau amagnétique de type laiton.The fixed yoke is not directly connected to the movable pallet, which is articulated to the intermediate part. If the pallet was directly articulated to the cylinder head, a fraction of the magnetic field would pass through the metal bearings, and would not be directly available in IBntrefer to operate the pallet. This magnetic separation between the fixed yoke and the movable pallet is carried out by means of said intermediate piece. This consists of a non-magnetic material of the brass type.
Le fait dtlhtercaler cette pièce intermédiaire modifie donc le passage du champ magnétique qui se canalise alors uniquement dans IBntrefer de manière à optimiser le niveau de déclenchement de la serrure par le déplacement de la palette mobile.The fact of placing this intermediate piece thus modifies the passage of the magnetic field which is then channeled only in IBntrefer so as to optimize the trigger level of the lock by moving the movable pallet.
Plus précisément, selon une configuration propre à Itlhvention, la borne est en forme de L au dos duquel est solidarisée le fond de la culasse en forme de gouttière, la pièce intermédiaire étant fixée entre ledit fond et le dos de la borne, ladite pièce enveloppant au moins partiellement IBxtérieur de la culasse et comportant deux branches en dépassant dans une direction d-àllure axiale, les extrémités desdites branches présentant des orifices en regard dans lesquels pivote la palette. La palette est ainsi facilement clipsée dans lesdits orifices de la pièce intermédiaire lors de Itâssemblage.More precisely, according to a configuration peculiar to the invention, the terminal is in the shape of an L on the back of which is fixed the bottom of the gutter-shaped yoke, the intermediate piece being fixed between said bottom and the back of the terminal, said surrounding piece at least partially outside the cylinder head and having two branches protruding in an axial direction, the ends of said branches having opposite orifices in which the pallet pivots. The pallet is thus easily clipped into said holes of the intermediate piece during Itassemblage.
Par ailleurs, les moyens de rappel sont constitués dDin ressort de compression interposé entre la palette, via une patte dépassant de IBxtrémité libre de celle-ci à IBpposé de la charnière avec la pièce intermédiaire, et un crochet prolongeant ladite pièce au delà de la culasse, dont dépasse une seconde patte. LBmploi dDin ressort de compression pour effectuer le réglage magnétique présente plusieurs avantages : il stâgit dDine solution qui est moins chère et plus précise que les ressorts de traction ou de torsion habituellement utilisés dans cette application. Le ressort de compression est adapté au calibre de Itappareil de coupure.In addition, the return means consist of a compression spring interposed between the pallet, via a tab protruding from the free end thereof to the door of the hinge with the intermediate piece, and a hook extending said piece beyond the cylinder head. , which exceeds a second leg. The use of compression spring for magnetic adjustment has several advantages: it provides a solution that is less expensive and more accurate than the tension or torsion springs usually used in this application. The compression spring is adapted to the gauge of the cutoff device.
Deux butées sont au surplus disposées à proximité de Itaxe de pivotement en vue de limiter Itamplitude du basculement de la palette sous IBffet du ressort de compression, qui sollicite en permanence ladite palette en direction desdites butées. Ces butées permettent de prépositionner la palette en vue de constituer un sous-ensemble prévu pour être intégré au boîtier. Selon une configuration possible, la palette mobile comporte au moins deux épaisseur obtenues par pliage sur elle même de la tôle magnétique constituant ladite palette. Ltaugmentation dBpaisseur ainsi facilement obtenue au niveau du passage du flux magnétique permet de retarder la saturation magnétique du matériau. Le nombre de pliage est multipliable et dépend du contexte techniques et des contraintes qui y sont associées.In addition, two abutments are arranged near the pivot axis in order to limit the amplitude of the tilting of the pallet under the effect of the compression spring, which constantly urges said pallet toward said abutments. These stops allow prepositioning the pallet to form a subset intended to be integrated into the housing. According to one possible configuration, the mobile pallet comprises at least two thicknesses obtained by folding on itself the magnetic sheet constituting said pallet. The increase in thickness thus easily obtained at the passage of the magnetic flux makes it possible to delay the magnetic saturation of the material. The number of folding is multipliable and depends on the technical context and the constraints associated therewith.
La palette présente par ailleurs de préférence une languette de réglage de l-àmplitude de son basculement, dont IBxtrémité libre coopère avec le boîtier de Itàppareil électrique. Une paroi du logement du sous-ensemble de Itlhvention dans le boîtier est positionnée pour servir de butée à cette languette, dont la position par rapport à la palette est facilement modifiable en vue de régler Itàmplitude du mouvement de pivotement.The pallet preferably also has a tab for adjusting the amplitude of its tilting, whose free end cooperates with the housing of Itàppareil electric. A wall of the housing of the assembly of the invention in the housing is positioned to serve as a stop for this tab, whose position relative to the pallet is easily modifiable to adjust the amplitude of the pivoting movement.
LQn des avantages de cette invention est dBviter tout réglage ultérieur du sous-ensemble en tant que tel une fois mis en place dans le boîtier. Ladite languette est à cet effet constituée dDine portion de la tôle de la palette voisine dHDin bord perpendiculaire à Itâxe de pivotement, obtenue par découpe dDin segment parallèle audit bord et subissant un pliage dont Itangle est variable et constitue le paramètre de réglage de l-àmplitude du basculement de la palette. Plus le pliage est important, augmentant ledit angle, plus la patte arrivera vite en butée contre la paroi du logement mentionnée ci-dessus, et moins le déplacement angulaire sera important.One of the advantages of this invention is to avoid any subsequent adjustment of the subassembly as such once set up in the housing. Said tongue is for this purpose constituted ofDine portion of the sheet of the adjacent pallet dHin edge perpendicular to the pivot axis, obtained by cutting dDin segment parallel to said edge and undergoing a folding whose Itangle is variable and constitutes the setting parameter of l-amplitude the tilting of the pallet. The greater the folding, increasing said angle, the faster the tab will abut against the wall of the housing mentioned above, and less angular displacement will be important.
Selon l'invention, le bilame passe dans la gouttière formant la culasse, dans laquelle il est orientée sensiblement parallèlement à Itâxe de ladite gouttière. Classiquement, ledit bilame est par ailleurs électriquement connecté à la borne en sortie de la culasse par au moins une tresse conductrice souple soudée dDine part à IBxtrémité libre du bilame et dtautre part au dos de ladite borne.According to the invention, the bimetal passes into the gutter forming the yoke, in which it is oriented substantially parallel to Itâxe said gutter. Conventionally, said bimetallic strip is also electrically connected to the terminal at the outlet of the cylinder head by at least one flexible conductive braid welded at the free end of the bimetallic strip and at the other end to the back of said terminal.
Dans la configuration de préférence adoptée pour Itlhvention, le bilame est fixé à la semelle du boîtier de Itâppareil au niveau de son extrémité opposée à IBxtrémité libre, et relié à ce niveau à un contact mobile de IΞippareil de coupure également via au moins une tresse conductrice souple. L'invention concerne également les appareils électriques de coupure du type disjoncteur qui sont équipés d'actionneurs magnétothermiques tels qu'ils ont été décrits ci-dessus, cBst à dire comportant pour chaque ligne à protéger un contact mobile apte à coopérer avec un contact fixe, une serrure mécanique de disjonction apte à basculer pour séparer le contact mobile du contact fixe en cas de surintensité dans une ligne, Itactionneur magnétothermique étant alors apte à agir sur ladite serrure pour la faire basculer.In the configuration preferably adopted for the invention, the bimetallic strip is fixed to the sole of the box of the device at its end opposite to the free end, and connected at this level to a movable contact of the switchgear also via at least one conductive braid. flexible. The invention also relates to breaker-type electrical breaker devices which are equipped with magnetothermal actuators as described above, ie having for each line to protect a movable contact capable of cooperating with a fixed contact. a mechanical disjunction lock capable of tilting to separate the movable contact from the fixed contact in case of overcurrent in a line, the magnetothermic actuator then being able to act on said lock to switch it.
L'invention va à présente être décrite plus en détail, en référence aux figures, pour lesquelles :The invention will now be described in more detail, with reference to the figures, for which:
- la figure 1 est une vue en perspective d'une première version à chauffage direct dDin actionneur magnétothermique selon l'invention ;FIG. 1 is a perspective view of a first directly heated version of a magnetothermic actuator according to the invention;
- la figure 2 montre une vue en coupe de la version de la figure 1 ;- Figure 2 shows a sectional view of the version of Figure 1;
- la figure 3 représente une vue en perspective d'une seconde version à chauffage indirect dDin actionneur magnétothermique selon l'invention ; etFIG. 3 represents a perspective view of a second indirectly heated version of a magnetothermic actuator according to the invention; and
- la figure 4 en montre une vue en coupe.- Figure 4 shows a sectional view.
A titre essentiel, l'actionneur magnétothermique de l'invention se compose d'une culasse magnétique fixe (1) en « gouttière » et d'une palette (2) mobile également en matériau magnétique, la culasse (1) et la palette (2) entourant un bilame (3) thermique.Essentially, the magnetothermic actuator of the invention consists of a fixed magnetic yoke (1) in "gutter" and a pallet (2) movable also in magnetic material, the yoke (1) and the pallet ( 2) surrounding a bimetallic strip (3).
Dans la version des figures 1 et 2, le bilame (3) est électriquement relié à une borne (4) de Itappareil électrique via une tresse conductrice (5). La palette (2) est rotative par rapport à une pièce intermédiaire (6) dotée de paliers de pivotements (7, 7[Jl. Deux butées (8, 8[Jl disposées à proximité de IΞixe de pivotement permettent de limiter Itamplitude du basculement de la palette (2) sous IBffet du ressort de compression (9), qui sollicite en permanence ladite palette (2) en direction desdites butées (8, 8IJI.In the version of FIGS. 1 and 2, the bimetallic strip (3) is electrically connected to a terminal (4) of the electrical apparatus via a conductive braid (5). The pallet (2) is rotatable with respect to an intermediate piece (6) provided with pivot bearings (7, 7). Two stops (8, 8) arranged near the pivoting point make it possible to limit the amplitude of the tilting. the pallet (2) under the effect of the compression spring (9), which permanently urges said pallet (2) towards said stops (8, 8IJI.
Le ressort (9), adapté à chaque calibre, est disposé entre la palette (2) et la culasse fixe (1 ), plus précisément sur deux pattes (10, 11 ) solidaires respectivement dDin crochet (13) dépassant de la pièce intermédiaire (6) et de la palette (2). Cette dernière présente deux couches ou épaisseurs repliées (2Q 2[φ dont IQne est dotée dDine languette (12) destinée au réglage de IΞimplitude du basculement, par coopération avec une paroi du boîtier de IΞippareil (non représenté). Les butées (8, 8[Jl servent donc uniquement à permettre IStablissement dDin sous-ensemble prémonté, prêt à être intégré dans le boîtier, et ne servent pas au réglage une fois que le sous-ensemble est inséré dans le socle du boîtier.The spring (9), adapted to each caliber, is arranged between the pallet (2) and the fixed yoke (1), more precisely on two lugs (10, 11) secured respectively to a hook (13) protruding from the intermediate piece ( 6) and the pallet (2). The latter has two layers or thicknesses folded (2Q 2 [φ whose IQne is equipped dDine tongue (12) for the adjustment of iΞimplitude of the tilt, by cooperation with a wall of the housing of l'Ξippareil (not shown) .The stops (8, 8 [Jl are therefore only used to allow Provision of pre-assembled sub-assembly, ready to be integrated in the housing, and are not used for adjustment once the subassembly is inserted into the base of the housing.
Le positionnement précis de la pièce intermédiaire (6) par rapport à la culasse fixe (1 ) apparaît plus clairement à la figure 2 : elle épouse au moins partiellement la surface extérieure de la culasse (1 ) et se trouve par conséquent placée en sandwich entre ladite culasse (1 ) et la borne (4). Selon une possibilité, II stâgit dDine pièce en laiton. La coupe de la figure 2 montre également clairement le support inférieur (14), inséré dans le socle du boîtier, sur laquelle est fixée IHDine des extrémités du bilame (3) relié au reste du circuit par une tresse souple (non représentée). La version des figures 3 et 4 est très similaire à la précédente, la seule différence résidant dans ISxistence dDin chauffage indirect du bilame (3) par une tôle conductrice (15) mince disposée dans le volume enclos par la culasse fixe (1 ) en forme de gouttière, entre le fond de ladite gouttière et le bilame (3). LBxtrémité inférieure de celui-ci y est fixée, et non plus directement au support inférieur (14) comme dans la version précédente.The precise positioning of the intermediate piece (6) relative to the fixed yoke (1) appears more clearly in Figure 2: it at least partially matches the outer surface of the yoke (1) and is therefore sandwiched between said yoke (1) and the terminal (4). According to one possibility, there is one piece of brass. The section of Figure 2 also clearly shows the lower support (14), inserted into the base of the housing, on which is fixed IHDine ends of the bimetal (3) connected to the rest of the circuit by a flexible braid (not shown). The version of FIGS. 3 and 4 is very similar to the previous one, the only difference residing in the existence of indirect heating of the bimetallic strip (3) by a thin conductive sheet (15) arranged in the volume enclosed by the fixed yoke (1) in the form gutter, between the bottom of said gutter and the bimetallic strip (3). The lower end of the latter is fixed thereto, and no longer directly to the lower support (14) as in the previous version.
La partie supérieure de ladite tôle (15) est solidarisée à la borne (4). Sa portion médiane (16) se développant parallèlement et à proximité du bilame (3) (voir en figure 4) réalise ISssentiel du chauffage par rayonnement du bilame (3). Une telle configuration peut avoir un intérêt lorsque, par exemple pour les calibres élevés, le courant traversant le bilame (3) est élevé et conduirait à le chauffer de manière déraisonnable.The upper part of said sheet (15) is secured to the terminal (4). Its median portion (16) developing parallel to and near the bimetallic strip (3) (see Figure 4) achieves ISssentiel radiant heating bimetal (3). Such a configuration may be of interest when, for example for high ratings, the current passing through the bimetallic strip (3) is high and would unreasonably heat it.
La configuration de l'invention permet d'obtenir, pour une largeur faible qui est compatible avec son introduction dans des modules, un rendement magnétique suffisant pour que le percuteur puisse faire déclencher la serrure magnétique en cas de court-circuit dans la ligne protégée par le disjoncteur équipé d'un tel actionneur. The configuration of the invention makes it possible to obtain, for a small width that is compatible with its introduction into modules, sufficient magnetic efficiency so that the striker can trigger the magnetic lock in the event of a short circuit in the line protected by the circuit breaker equipped with such an actuator.

Claims

REVENDICATIONS
1. Déclencheur magnétothermique pour appareil électrique de coupure de type disjoncteur, comportant un circuit magnétique à palette mobile (2) pivotant par rapport à une culasse fixe (1 ) formant le reste du circuit magnétique, ladite culasse (1 ) étant à section en U et entourant un bilame thermique (3) électriquement relié à une borne (4) de Itappareil, des moyens de rappel (9) maintenant la palette (2) en position ouverte par rapport à la culasse (1 ) en Itabsence de courant de court-circuit, caractérisé en ce que la borne1. Magnetothermic tripping device for circuit-breaker type electrical apparatus, comprising a movable paddle magnetic circuit (2) pivoting with respect to a fixed yoke (1) forming the remainder of the magnetic circuit, said yoke (1) being of U-section and surrounding a thermal bimetallic strip (3) electrically connected to a terminal (4) of the apparatus, return means (9) holding the pallet (2) in the open position with respect to the cylinder head (1) in the absence of short-circuit current. circuit, characterized in that the terminal
(4) et la culasse (1) sont fixées IDine à Itautre et à une pièce intermédiaire (6) dotée de paliers de pivotement (7, 7[Jl pour la palette (2), IBnsemble formant un sous-ensemble dDin seul tenant.(4) and the cylinder head (1) are fixed to the other and to an intermediate piece (6) provided with pivot bearings (7, 7) for the pallet (2), the assembly forming a single-piece subassembly.
2. Déclencheur magnétothermique selon la revendication précédente, caractérisé en ce que la borne (4) est en forme de L au dos duquel est solidarisée le fond de la culasse (1 ) en forme de gouttière, la pièce intermédiaire (6) étant fixée entre ledit fond et le dos de la borne (4), ladite pièce (6) enveloppant au moins partiellement ISxtérieur de la culasse (1 ) et comportant deux branches en dépassant dans une direction dtallure axiale, les extrémités desdites branches présentant des orifices (7, 7[Jl en regard dans lesquels pivote la palette (2).2. Magnetothermic trip device according to the preceding claim, characterized in that the terminal (4) is L-shaped back which is secured to the bottom of the yoke (1) in the form of a gutter, the intermediate piece (6) being fixed between said bottom and the back of the terminal (4), said part (6) wrapping at least partially outside the cylinder head (1) and having two branches protruding in a direction of axial alignment, the ends of said branches having orifices (7, 7 [Jl next in which pivots the pallet (2).
3. Déclencheur magnétothermique selon la revendication précédente, caractérisé en ce que les moyens de rappel sont constitués d-Din ressort de compression interposé entre la palette (2), via une patte (11 ) dépassant de IBxtrémité libre de celle-ci à IBpposé de la charnière avec la pièce intermédiaire (6), et un crochet (13) prolongeant ladite pièce au delà de la culasse, dont dépasse une seconde patte (10). 3. Magnetothermic trip device according to the preceding claim, characterized in that the return means consist of a compression spring interposed between the pallet (2), via a tab (11) protruding from the free end of the latter IBpposé of the hinge with the intermediate piece (6), and a hook (13) extending said piece beyond the cylinder head, which exceeds a second leg (10).
4. Déclencheur magnétothermique selon la revendication précédente, caractérisé en ce que deux butées (8, 8IJI sont disposées à proximité de Itàxe de pivotement en vue de limiter l-àmplitude du basculement de la palette (2) sous IBffet du ressort de compression (9), qui sollicite en permanence ladite palette (2) en direction desdites butées (8, 8[Jl. 4. Magnetothermic tripping device according to the preceding claim, characterized in that two stops (8, 8IJI are arranged in the vicinity of the pivoting axis to limit the amplitude of tilting of the pallet (2) under the effect of the compression spring (9), which permanently urges said pallet (2) towards said stops (8, 8 [ Jl.
5. Déclencheur magnétothermique selon IQne quelconque des revendications précédentes, caractérisé en ce que la palette mobile (2) comporte au moins deux épaisseurs (2Q 2[_p obtenues par repli de la tôle magnétique constituant ladite palette (2).5. Magnetothermic trip device according to any one of the preceding claims, characterized in that the movable vane (2) comprises at least two thicknesses (2Q 2 [_p obtained by folding the magnetic sheet constituting said pallet (2).
6. Déclencheur magnétothermique selon IQne des revendications précédentes, caractérisé en ce que la palette (2) présente une languette (12) de réglage de l-àmplitude de son basculement, dont IBxtrémité libre coopère avec le boîtier de Itàppareil électrique.6. Thermal magnetic trip device according toIQne of the preceding claims, characterized in that the pallet (2) has a tab (12) for adjusting the amplitude of its tilt, whose IBtremité cooperates with the housing of Itàppareil electric.
7. Déclencheur magnétothermique selon la revendication précédente, caractérisée en ce que ladite languette (12) est constituée d-Dine portion de la tôle de la palette (2) voisine dDin bord perpendiculaire à Itàxe de pivotement, obtenue par découpe dDin segment parallèle audit bord et subissant un pliage dont Itàngle est variable et constitue le paramètre de réglage de l-àmplitude du basculement de la palette (2).7. Magnetothermic trip device according to the preceding claim, characterized in that said tongue (12) consists of d-Dine portion of the sheet of the pallet (2) adjacent dDin edge perpendicular to Itàxe pivoting, obtained by cutting dDin segment parallel to said edge and undergoing a bending of which Itangle is variable and constitutes the setting parameter of l-amplitude of the tilting of the pallet (2).
8. Déclencheur magnétothermique selon IDine quelconque des revendications 2 à 6, caractérisée en ce que le bilame (3) passe dans la gouttière formant la culasse (1 ), dans laquelle il est orientée sensiblement parallèlement à Itàxe de ladite gouttière. 8. Magnetothermic actuator according to IDine any of claims 2 to 6, characterized in that the bimetal (3) passes into the gutter forming the yoke (1), wherein it is oriented substantially parallel to Itàxe said gutter.
9. Déclencheur magnétothermique selon la revendication précédente, caractérisée en ce que le bilame (3) est électriquement connecté à la borne (4) en sortie de la culasse par au moins une tresse (5) conductrice souple soudée d-ûne part à IBxtrémité libre du bilame (3) et dtàutre part au dos de ladite borne (4). 9. Thermal magnetic trip device according to the preceding claim, characterized in that the bimetallic strip (3) is electrically connected to the terminal (4) at the outlet of the cylinder head by at least one flexible conductive braid (5) welded from one side to the free end. bimetal (3) and on the other hand on the back of said terminal (4).
10. Déclencheur magnétothermique selon IDine des revendications 7 et 8, caractérisé en ce que le bilame (3) est fixé à la semelle du boîtier de Itappareil au niveau de son extrémité opposée à IBxtrémité libre, et relié à ce niveau à un contact mobile de IΞippareil de coupure via au moins une tresse conductrice souple.Magnetothermic tripping device according to IDine of claims 7 and 8, characterized in that the bimetal (3) is attached to the The sole of the device housing at its opposite end to the free end, and connected at this level to a movable contact of the switchgear via at least one flexible conductive braid.
11. Appareil de coupure de type disjoncteur comportant pour chaque ligne à protéger un contact mobile apte à coopérer avec un contact fixe, une serrure mécanique de disjonction apte à basculer pour séparer le contact mobile du contact fixe en cas de surintensité dans une ligne, caractérisé en ce qutD comporte un déclencheur magnétothermique selon IQne des revendications précédentes apte à agir sur ladite serrure pour la faire basculer. Circuit breaker type breaking device comprising, for each line to be protected, a movable contact capable of cooperating with a fixed contact, a mechanical disjunction lock capable of tilting in order to separate the movable contact from the fixed contact in the event of overcurrent in a line, characterized in that D comprises a magnetothermic release according toIQne preceding claims able to act on said lock to tilt.
EP10715967.5A 2009-03-23 2010-03-23 Thermal-magnetic tripping mechanism Active EP2411995B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0951817A FR2943455B1 (en) 2009-03-23 2009-03-23 MAGNETOTHERMIC TRIGGER
PCT/FR2010/050525 WO2010109129A1 (en) 2009-03-23 2010-03-23 Magnetothermal release mechanism

Publications (2)

Publication Number Publication Date
EP2411995A1 true EP2411995A1 (en) 2012-02-01
EP2411995B1 EP2411995B1 (en) 2018-01-17

Family

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Application Number Title Priority Date Filing Date
EP10715967.5A Active EP2411995B1 (en) 2009-03-23 2010-03-23 Thermal-magnetic tripping mechanism

Country Status (6)

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EP (1) EP2411995B1 (en)
JP (2) JP5632449B2 (en)
CN (1) CN102439681B (en)
BR (1) BRPI1006271A2 (en)
FR (1) FR2943455B1 (en)
WO (1) WO2010109129A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2987164B1 (en) * 2012-02-17 2014-03-28 Hager Electro Sas INSTANTANEOUS TRIGGER FOR ELECTRICAL DEVICE FOR PROTECTING LINES OF THE CIRCUIT BREAKER TYPE.
EP2750158B1 (en) * 2012-12-27 2015-08-26 Hager Electro Sas Thermal, magnetic subassembly for a selective circuit-breaker
FR3023057B1 (en) * 2014-06-30 2016-07-22 Hager-Electro Sas MAGNETOTHERMIC TRIGGER.
EP3373319B1 (en) 2017-03-09 2021-11-10 LSIS Co., Ltd. Circuit breaker with instant trip mechanism

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JPS60127629A (en) * 1983-12-14 1985-07-08 松下電工株式会社 Circuit breaker
JPH05342967A (en) * 1992-06-04 1993-12-24 Mitsubishi Electric Corp Circuit breaker
JPH0896689A (en) * 1994-09-28 1996-04-12 Mitsubishi Electric Corp Trip device of circuit breaker
DE29515254U1 (en) * 1995-09-23 1995-12-14 Kloeckner Moeller Gmbh Tripping device consisting of an electromagnetic quick release and a bimetal strip of an overcurrent release that is operatively connected to it
JP2001068007A (en) * 1999-08-26 2001-03-16 Matsushita Electric Works Ltd Electromagnetic tripping device of circuit breaker
DE10036351B4 (en) * 2000-07-26 2007-01-11 Moeller Gmbh Tripping device for overload and short-circuit tripping
JP3640169B2 (en) * 2001-01-26 2005-04-20 松下電工株式会社 Circuit breaker trip device
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CN201204164Y (en) * 2008-05-31 2009-03-04 常熟开关制造有限公司(原常熟开关厂） Pyromagnetic release

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Also Published As

Publication number Publication date
JP5632449B2 (en) 2014-11-26
JP2014225473A (en) 2014-12-04
FR2943455A1 (en) 2010-09-24
BRPI1006271A2 (en) 2016-02-23
WO2010109129A1 (en) 2010-09-30
CN102439681B (en) 2015-12-09
CN102439681A (en) 2012-05-02
FR2943455B1 (en) 2011-05-06
JP2012521626A (en) 2012-09-13
EP2411995B1 (en) 2018-01-17

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