EP1632970B1 - Electromagnetic trip and electronic circuit breaker containing it - Google Patents

Electromagnetic trip and electronic circuit breaker containing it Download PDF

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Publication number
EP1632970B1
EP1632970B1 EP05354025.8A EP05354025A EP1632970B1 EP 1632970 B1 EP1632970 B1 EP 1632970B1 EP 05354025 A EP05354025 A EP 05354025A EP 1632970 B1 EP1632970 B1 EP 1632970B1
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EP
European Patent Office
Prior art keywords
palette
blade
trip switch
armature
switch according
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.)
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Application number
EP05354025.8A
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German (de)
French (fr)
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EP1632970A2 (en
EP1632970A3 (en
Inventor
Nadine Serrano
Audrey Olivier
Alain Karczewski
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication date
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Publication of EP1632970A2 publication Critical patent/EP1632970A2/en
Publication of EP1632970A3 publication Critical patent/EP1632970A3/en
Application granted granted Critical
Publication of EP1632970B1 publication Critical patent/EP1632970B1/en
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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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature

Definitions

  • the present invention relates to an electromagnetic release, comprising a U-shaped armature whose ends form two polar surfaces, a pallet pivotable with respect to the armature, adapted to be brought on said polar surfaces to close the magnetic circuit formed by the frame and the pallet, a permanent magnetic polarization magnet of the magnetic circuit, a trigger coil surrounding the magnetic circuit capable of counteracting the force of the magnet so as to move the pallet, a rearming nipple of the pallet, a blade intended to cushion the impact of the rearming efforts and a return spring of the pallet.
  • the document DE 3528470 discloses a trigger having a blade damper.
  • the articulation of the pallet is achieved by means of an insert placed between the pallet and the frame, and the spring is fixed on a projecting portion formed on the pallet, the assembly having it's a complicated structure.
  • the document EP-A-0 911 850 is considered to be the closest document to the invention and includes all the features of the preamble of claim 1.
  • This document describes a trigger including a reset blade.
  • the articulation of the pallet is made between the pallet and the frame.
  • the present invention provides a simplified design trigger and a cutoff device comprising it.
  • the subject of the present invention is a trigger according to claim 1.
  • the tabs extend in planes substantially perpendicular to the main plane of the blade.
  • the aforementioned pivots are formed by angular portions formed on the tabs and cooperating with an inner wall located in the aforementioned housing.
  • the angle of the aforementioned angular portions is chosen so as to limit the opening of the pallet during assembly of the release.
  • the blade has a hook-shaped portion adapted to allow the attachment of a spring ensuring the return of the pallet away from the polar surfaces of the frame against the action of the magnet permanent.
  • the blade comprises a stop limiting the displacement of the pallet towards the side opposite the articulation.
  • the abutment is constituted by two edges of the blade respectively belonging to two recesses provided on either side of the blade and intended to respectively receive two branches located at the end of one of the wings of the armature by report to which said pallet is articulated.
  • the blade has an arcuate shape whose radius is defined so as to bias the pallet on its hinge rear stop when resetting via the pin.
  • the aforementioned tabs respectively comprise two opposite bosses relative to each other, located respectively on the inner face of said tabs and housed in the aforementioned recesses of the blade, said bosses being intended to provide lateral positioning pallet and blade relative to the frame.
  • the present invention further relates to a switchgear device comprising an electromagnetic actuator comprising the above mentioned features taken alone or in combination.
  • This trigger comprises a U-shaped frame A and a pivoting pallet 1.
  • This frame A is formed by a base 2 and two wings 5,6.
  • the pallet 1 is articulated on the end 8 of one 6 of the wings 5,6 of the armature A, and in the armed position of the trigger D, said pallet 1 is applied on the ends 7,8 of the wings 5 , 6 constituting two polar surfaces.
  • Around one of the wings of the armature A is threaded the carcass of a coil B.
  • a permanent magnet P polarization of the armature A is interposed between said wings 5.6 to maintain the pallet 1 in position attracted on the polar surfaces 7,8 against the return force of a spring 9.
  • This trigger D also comprises a reset blade 10 fixed on the pallet 1 at one of its opposite ends 11,12. The two ends 13, 14 of the blade 10 rest on the pallet 1 at the polar zones 7, 8 in order to distribute the resetting forces and thus prevent the deformation of the pallet 1 which affects the functional properties of the trigger D.
  • This blade 10 makes it possible to damp the impact of the rearming forces generated via the reset pin 15 during the operations reset so that the pallet 1 returns to its functional initial position after the reset operation.
  • this blade 10 is formed by a slightly convex shaped portion 16 from which two tabs 17, 18 extend in a plane substantially perpendicular to the main plane of the blade 10.
  • blade 10 also has two recesses 19,20 opposite one another, relative to the axis of the blade 10 and each extending from one 21,22 of the longitudinal edges of the blade 10 towards the central axis of the blade 10 over only a portion of the length of said blade 10.
  • one 6 of the wings 5,6 of the armature A, on which is articulated the pallet 1 ends with two branches 23 of which only one 23 is shown.
  • the aforesaid recesses 19, 20 of the blade 10 are intended to house each one 23 of these branches 23 of the armature 6.
  • the two aforementioned tabs 17, 18 of the blade 10 each comprise an angular portion 24, 25 forming a pivot adapted to cooperate with the inner face 32 of the aforementioned branches 23 and are housed in a housing 31 provided at the end of said flange 6.
  • the tabs 17, 18 each also comprise, on their inner face, a boss 29, 34 extending in the direction of the central axis of the blade 10 and ensuring the lateral positioning of said blade 10.
  • the lateral positioning is achieved by dots on a flat surface, off pole surface and without causing cutting burr.
  • This blade 10 is also extended by a specific shaped portion 30 to allow attachment of the aforementioned return spring 9.
  • This blade 10 is made of a material chosen for its elastic properties, non-magnetic, non-corrosive, and laser weldable. It can also be seen that the tabs 17, 18 supporting the hinge pivots 24, 25 have an angle 35 chosen so as to limit the opening of the pallet 1 during assembly.
  • the blade 10 has a shape in an arc whose radius is chosen, for example R35, so as to bias the pallet 1 on its hinge rear stop 28 during rearming via the stud 15.
  • the shapes of the blade 10 are obtained by cutting, folding and stamping on a single piece. This part is assembled to the pallet of the relay by a laser welding process. In normal operation, the pallet is held against the polar surfaces of the armature by the permanent magnet. When an electrical fault occurs in the electrical circuit in which the trigger is integrated, the coil is traversed by a current that opposes the attraction of the magnet. The pallet is then returned to a position remote from the frame by the return spring.
  • An electromagnetic actuator of simple design has thus been realized by means of the invention, comprising a device for preventing deformation of the pallet during resetting of the relay via the stud, this device producing with a single piece the functions of spring clip, articulation, abutment, lateral positioning, longitudinal positioning, limitation of the opening angle, damper, force distributor on the magnetic poles.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Description

La présente invention concerne un déclencheur électromagnétique, comprenant une armature en forme de U dont les extrémités forment deux surfaces polaires, une palette pivotante par rapport à l'armature, apte à être amenée sur lesdites surfaces polaires pour fermer le circuit magnétique constitué par l'armature et la palette, un aimant permanent de polarisation du circuit magnétique, une bobine de déclenchement entourant le circuit magnétique apte à contrecarrer la force de l'aimant de manière à déplacer la palette, un téton de réarmement de la palette, une lame destinée à amortir l'impact des efforts de réarmement et un ressort de rappel de la palette.The present invention relates to an electromagnetic release, comprising a U-shaped armature whose ends form two polar surfaces, a pallet pivotable with respect to the armature, adapted to be brought on said polar surfaces to close the magnetic circuit formed by the frame and the pallet, a permanent magnetic polarization magnet of the magnetic circuit, a trigger coil surrounding the magnetic circuit capable of counteracting the force of the magnet so as to move the pallet, a rearming nipple of the pallet, a blade intended to cushion the impact of the rearming efforts and a return spring of the pallet.

Beaucoup de déclencheurs électromagnétiques tels ceux décrits dans les documents EP829895 et DE 4110660 ne possèdent pas de dispositifs destinés à amortir l'impact des efforts de réarmement.Many electromagnetic triggers such as those described in the documents EP829895 and DE 4110660 do not have devices to cushion the impact of rearming efforts.

Le document DE 3528470 décrit un déclencheur comportant un amortisseur à lame. Or, dans ce dispositif, l'articulation de la palette est réalisée au moyen d'une pièce rapportée placée entre la palette et l'armature, et le ressort est fixé sur une partie en saillie formée sur la palette, l'ensemble présentant de ce fait une structure compliquée.The document DE 3528470 discloses a trigger having a blade damper. However, in this device, the articulation of the pallet is achieved by means of an insert placed between the pallet and the frame, and the spring is fixed on a projecting portion formed on the pallet, the assembly having it's a complicated structure.

Le document EP-A-0 911 850 est considéré comme étant le document le plus proche de l'invention et comporte toutes les caractéristiques du préambule de la revendication 1.The document EP-A-0 911 850 is considered to be the closest document to the invention and includes all the features of the preamble of claim 1.

Ce document décrit un déclencheur comportant une lame de réarmement. Dans ce dispositif, l'articulation de la palette est réalisée entre la palette et l'armature.This document describes a trigger including a reset blade. In this device, the articulation of the pallet is made between the pallet and the frame.

La présente invention propose un déclencheur de conception simplifiée ainsi qu'un appareil de coupure le comportant.The present invention provides a simplified design trigger and a cutoff device comprising it.

A cet effet, la présente invention a pour objet un déclencheur selon la revendication 1. Selon une caractéristique particulière, les pattes s'étendent dans des plans sensiblement perpendiculaires au plan principal de la lame.For this purpose, the subject of the present invention is a trigger according to claim 1. According to a particular characteristic, the tabs extend in planes substantially perpendicular to the main plane of the blade.

Selon une autre caractéristique, les pivots précités sont formés par des parties angulaires formées sur les pattes et coopérant avec une paroi intérieure située dans le logement précité.According to another characteristic, the aforementioned pivots are formed by angular portions formed on the tabs and cooperating with an inner wall located in the aforementioned housing.

Selon une autre caractéristique, l'angle des parties angulaires précitées est choisi de manière à limiter l'ouverture de la palette pendant le montage du déclencheur.According to another feature, the angle of the aforementioned angular portions is chosen so as to limit the opening of the pallet during assembly of the release.

Selon une autre caractéristique, la lame comporte une partie en forme de crochet apte à permettre l'accrochage d'un ressort assurant le rappel de la palette loin des surfaces polaires de l'armature à l'encontre de l'action de l'aimant permanent.According to another feature, the blade has a hook-shaped portion adapted to allow the attachment of a spring ensuring the return of the pallet away from the polar surfaces of the frame against the action of the magnet permanent.

Selon une autre caractéristique, la lame comporte une butée de limitation du déplacement de la palette vers le côté opposé à l'articulation.According to another characteristic, the blade comprises a stop limiting the displacement of the pallet towards the side opposite the articulation.

Avantageusement, la butée est constituée par deux bords de la lame appartenant respectivement à deux évidements prévus de part et d'autre de la lame et destinés à recevoir respectivement deux branches situées à l'extrémité de l'une des ailes de l'armature par rapport à laquelle ladite palette est articulée.Advantageously, the abutment is constituted by two edges of the blade respectively belonging to two recesses provided on either side of the blade and intended to respectively receive two branches located at the end of one of the wings of the armature by report to which said pallet is articulated.

Selon une autre caractéristique, la lame présente une forme en arc de cercle dont le rayon est défini de façon à polariser la palette sur sa butée arrière d'articulation lors du réarmement via le téton.According to another feature, the blade has an arcuate shape whose radius is defined so as to bias the pallet on its hinge rear stop when resetting via the pin.

Selon une autre caractéristique, les pattes précitées comportent respectivement deux bossages opposés l'un par rapport à l'autre, situés respectivement sur la face intérieure desdites pattes et logés dans les évidements précités de la lame, lesdits bossages étant destinés à assurer le positionnement latéral de la palette et de la lame par rapport à l'armature.According to another characteristic, the aforementioned tabs respectively comprise two opposite bosses relative to each other, located respectively on the inner face of said tabs and housed in the aforementioned recesses of the blade, said bosses being intended to provide lateral positioning pallet and blade relative to the frame.

La présente invention a encore pour objet un appareil de coupure comportant un déclencheur électromagnétique comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The present invention further relates to a switchgear device comprising an electromagnetic actuator comprising the above mentioned features taken alone or in combination.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La figure 1 est une vue de côté d'un déclencheur électromagnétique conforme à l'invention, en position armée,
  • La figure 2 est une vue de dessus de la lame dite amortisseur, et
  • La figure 3 est une vue de côté de la précédente.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a side view of an electromagnetic release according to the invention, in an armed position,
  • The figure 2 is a top view of the so-called damper blade, and
  • The figure 3 is a side view of the previous one.

Sur la figure 1, on voit un déclencheur électromagnétique à haute sensibilité destiné à être intégré à un interrupteur différentiel. Ce déclencheur comporte une armature A en forme de U et une palette pivotante 1. Cette armature A est formée par une base 2 et deux ailes 5,6. La palette 1 est articulée sur l'extrémité 8 de l'une 6 des ailes 5,6 de l'armature A, et en position armée du déclencheur D, ladite palette 1 vient s'appliquer sur les extrémités 7,8 des ailes 5,6 constituant deux surfaces polaires. Autour de l'une des ailes de l'armature A, est enfilée la carcasse d'une bobine B. Un aimant permanent P de polarisation de l'armature A, est intercalé entre lesdites ailes 5,6 pour maintenir la palette 1 en position attirée sur les surfaces polaires 7,8 à l'encontre de la force de rappel d'un ressort 9. Un tel déclencheur est bien connu, et il suffit de rappeler que la libération de la palette 1 est provoquée par une excitation de la bobine annulant l'attraction de la palette 1 par l'aimant permanent, entraînant de ce fait le rappel de la palette 1 dans une position éloignée des surfaces polaires 7,8 de l'armature A par l'intermédiaire du ressort de rappel, ce mouvement de la palette 1 entraînant l'interruption du circuit électrique.
Ce déclencheur D comporte également une lame de réarmement 10 fixée sur la palette 1 au niveau de l'une 12 de ses extrémités opposées 11,12. Les deux extrémités 13,14 de la lame 10 sont en appui sur la palette 1 au niveau des zones polaires 7,8 afin de répartir les forces de réarmement et d'empêcher ainsi la déformation de la palette 1 qui nuit aux propriétés fonctionnelles du déclencheur D. Cette lame 10 permet d'amortir l'impact des efforts de réarmement générés par l'intermédiaire du téton de réarmement 15 pendant les opérations de réarmement de manière que la palette 1 retrouve sa position initiale fonctionnelle après l'opération de réarmement.On the figure 1 , we see a high sensitivity electromagnetic trigger intended to be integrated into a differential switch. This trigger comprises a U-shaped frame A and a pivoting pallet 1. This frame A is formed by a base 2 and two wings 5,6. The pallet 1 is articulated on the end 8 of one 6 of the wings 5,6 of the armature A, and in the armed position of the trigger D, said pallet 1 is applied on the ends 7,8 of the wings 5 , 6 constituting two polar surfaces. Around one of the wings of the armature A, is threaded the carcass of a coil B. A permanent magnet P polarization of the armature A, is interposed between said wings 5.6 to maintain the pallet 1 in position attracted on the polar surfaces 7,8 against the return force of a spring 9. Such a trigger is well known, and it is sufficient to remember that the release of the pallet 1 is caused by an excitation of the coil canceling the attraction of the pallet 1 by the permanent magnet, thereby causing the return of the pallet 1 in a position remote from the pole surfaces 7,8 of the armature A by means of the return spring, this movement of the pallet 1 causing the interruption of the electric circuit.
This trigger D also comprises a reset blade 10 fixed on the pallet 1 at one of its opposite ends 11,12. The two ends 13, 14 of the blade 10 rest on the pallet 1 at the polar zones 7, 8 in order to distribute the resetting forces and thus prevent the deformation of the pallet 1 which affects the functional properties of the trigger D. This blade 10 makes it possible to damp the impact of the rearming forces generated via the reset pin 15 during the operations reset so that the pallet 1 returns to its functional initial position after the reset operation.

En se reportant plus particulièrement aux figures 2 et 3, on voit que, conformément à l'invention, cette lame 10 est formée par une partie de forme légèrement bombée 16 à partir de laquelle s'étendent deux pattes 17,18 dans un plan sensiblement perpendiculaire au plan principal de la lame 10. Cette lame 10 comporte également deux évidements 19,20 opposés l'un par rapport à l'autre, par rapport à l'axe de la lame 10 et s'étendant chacun à partir de l'un 21,22 des bords longitudinaux de la lame 10 en direction de l'axe central de la lame 10 sur une partie seulement de la longueur de ladite lame 10. En se reportant de nouveau à la figure 1, on voit que l'une 6 des ailes 5,6 de l'armature A, sur laquelle est articulée la palette 1, se termine par deux branches 23 dont seule l'une 23 est représentée. Les évidements 19,20 précités de la lame 10 sont destinés à loger chacun l'une 23 de ces branches 23 de l'armature 6. Les deux pattes 17,18 précitées de la lame 10 comportent chacune une partie angulaire 24,25 formant pivot apte à coopérer avec la face interne 32 des branches précitées 23 et sont logées dans un logement 31 prévu à l'extrémité de ladite aile 6.
L'un 26,27 des bords de chaque évidemment 19,20, situé du côté de l'articulation, constitue une butée arrière 28 apte à limiter le déplacement de la palette 1 vers l'avant, c'est à dire vers le côté opposé à l'articulation. Ainsi est garanti un positionnement optimum de la palette 1 sur son articulation et par rapport aux surfaces polaires 7,8.
Les pattes 17,18 comportent également chacune, sur leur face intérieure, un bossage 29,34 s'étendant en direction de l'axe central de la lame 10 et assurant le positionnement latéral de ladite lame 10.
Ainsi, le positionnement latéral est réalisé par des points sur une surface plate, hors surface polaires et sans entraîner de bavure de découpe.
Cette lame 10 est également prolongée par une partie de forme spécifique 30 destinée à permettre l'accrochage du ressort de rappel précité 9. Cette lame 10 est réalisée dans un matériau choisi pour ses propriétés élastiques, amagnétiques, non corrosives, et soudables au laser.
On voit également que les pattes 17,18 supportant les pivots d'articulation 24,25 présentent un angle 35 choisi de manière à limiter l'ouverture de la palette 1 pendant le montage.With particular reference to Figures 2 and 3 it can be seen that, according to the invention, this blade 10 is formed by a slightly convex shaped portion 16 from which two tabs 17, 18 extend in a plane substantially perpendicular to the main plane of the blade 10. blade 10 also has two recesses 19,20 opposite one another, relative to the axis of the blade 10 and each extending from one 21,22 of the longitudinal edges of the blade 10 towards the central axis of the blade 10 over only a portion of the length of said blade 10. Referring again to the figure 1 , we see that one 6 of the wings 5,6 of the armature A, on which is articulated the pallet 1, ends with two branches 23 of which only one 23 is shown. The aforesaid recesses 19, 20 of the blade 10 are intended to house each one 23 of these branches 23 of the armature 6. The two aforementioned tabs 17, 18 of the blade 10 each comprise an angular portion 24, 25 forming a pivot adapted to cooperate with the inner face 32 of the aforementioned branches 23 and are housed in a housing 31 provided at the end of said flange 6.
One 26,27 of the edges of each obviously 19,20, located on the side of the hinge, constitutes a rear stop 28 able to limit the movement of the pallet 1 forward, that is to say towards the side opposite to the articulation. This ensures optimum positioning of the pallet 1 on its articulation and with respect to the polar surfaces 7,8.
The tabs 17, 18 each also comprise, on their inner face, a boss 29, 34 extending in the direction of the central axis of the blade 10 and ensuring the lateral positioning of said blade 10.
Thus, the lateral positioning is achieved by dots on a flat surface, off pole surface and without causing cutting burr.
This blade 10 is also extended by a specific shaped portion 30 to allow attachment of the aforementioned return spring 9. This blade 10 is made of a material chosen for its elastic properties, non-magnetic, non-corrosive, and laser weldable.
It can also be seen that the tabs 17, 18 supporting the hinge pivots 24, 25 have an angle 35 chosen so as to limit the opening of the pallet 1 during assembly.

La lame 10 présente une forme en arc de cercle dont le rayon est choisi, par exemple R35, de manière à polariser la palette 1 sur sa butée arrière d'articulation 28 lors du réarmement via le téton 15.
Les formes de la lame 10 sont obtenues par découpage, pliage et emboutissage sur une pièce unique. Cette pièce est assemblée à la palette du relais par un procédé de soudure laser.
En fonctionnement normal, la palette est maintenue contre les surfaces polaires de l'armature par l'aimant permanent. Lors de la survenue d'un défaut électrique dans le circuit électrique dans lequel le déclencheur est intégré, la bobine est traversée par un courant qui s'oppose à l'attraction de l'aimant. La palette est alors rappelée dans une position éloignée de l'armature par le ressort de rappel. Pendant ce mouvement, la palette pivote autour d'un axe matérialisé par les pivots d'articulation formés sur les pattes de la lame, coopérant avec une face des branches précités de l'une des ailes de l'armature. Lors de l'opération de réarmement, la palette est rappelée sur sa butée arrière d'articulation, ladite palette retrouvant sa position initiale fonctionnelle grâce à l'action de la lame.
On a donc réalisé grâce à l'invention un déclencheur électromagnétique de conception simple comprenant un dispositif pour empêcher la déformation de la palette lors du réarmement du relais via le téton, ce dispositif réalisant avec une seule pièce les fonctions d'attache-ressort, d'articulation, de butée, de positionnement latéral, de positionnement longitudinal, de limitation de l'angle d'ouverture, d'amortisseur, de répartiteur d'efforts sur les pôles magnétiques.The blade 10 has a shape in an arc whose radius is chosen, for example R35, so as to bias the pallet 1 on its hinge rear stop 28 during rearming via the stud 15.
The shapes of the blade 10 are obtained by cutting, folding and stamping on a single piece. This part is assembled to the pallet of the relay by a laser welding process.
In normal operation, the pallet is held against the polar surfaces of the armature by the permanent magnet. When an electrical fault occurs in the electrical circuit in which the trigger is integrated, the coil is traversed by a current that opposes the attraction of the magnet. The pallet is then returned to a position remote from the frame by the return spring. During this movement, the pallet pivots about an axis materialized by the pivot pins formed on the legs of the blade, cooperating with a face of the aforementioned branches of one of the wings of the frame. During the rearming operation, the pallet is recalled on its hinge rear stop, said pallet returning to its original functional position thanks to the action of the blade.
An electromagnetic actuator of simple design has thus been realized by means of the invention, comprising a device for preventing deformation of the pallet during resetting of the relay via the stud, this device producing with a single piece the functions of spring clip, articulation, abutment, lateral positioning, longitudinal positioning, limitation of the opening angle, damper, force distributor on the magnetic poles.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et illustrés qui n'ont été donnés qu'à titre d'exemple.Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant l'invention comme défini par les revendications 1-11.On the contrary, the invention includes all the technical equivalents of the means described and their combinations if they are performed according to the invention as defined by claims 1-11.

Claims (11)

  1. Electromagnetic trip switch comprising a U-shaped armature whose ends form two pole surfaces, a palette pivoting with respect to the armature, able to be brought onto the said pole surfaces so as to close the magnetic circuit consisting of the armature and the palette, a permanent magnet for polarizing the magnetic circuit, a trip coil surrounding the magnetic circuit able to counteract the force of the magnet so as to displace the palette, a reset pin for rearming the palette, a blade fixed on the palette intended to damp the impact of the reset loads and a return spring for the palette, characterized in that the aforementioned blade (10) comprises two lugs (17,18) extending on either side of the palette (1) and comprising hinge pivots (24,25) for articulating the palette (1) with respect to the armature A, the lugs and the pivots being integral with the blade (10), and the said lugs being housed in a housing (31) provided at the end of one (6) of the wings (5,6) of the armature A.
  2. Trip switch according to Claim 1, characterized in that the lugs (17,18) extend in planes substantially perpendicular to the main plane of the blade (10).
  3. Trip switch according to any one of the preceding claims, characterized in that the aforementioned pivots (24,25) are formed by angular parts formed on the lugs (17,18) and cooperating with an interior wall (32) situated in the aforementioned housing (31).
  4. Trip switch according to Claim 3, characterized in that the angle (35) of the aforementioned angular parts (24,25) is chosen so as to limit the opening of the palette (1) when mounting the trip switch D.
  5. Trip switch according to any one of the preceding claims, characterized in that the blade (10) comprises a hook-shaped part (30) able to allow the attachment of a spring (9) ensuring the return of the palette (1) far from the pole surfaces (7,8) of the armature A, counter to the force of the permanent magnet.
  6. Trip switch according to any one of the preceding claims, characterized in that the blade (10) comprises a limitation abutment (28) for limiting the displacement of the palette (1) towards the side opposite to the articulation (24,25,32).
  7. Trip switch according to Claim 6, characterized in that the aforementioned abutment (28) consists of two edges (26,27) of the blade (10) belonging respectively to two recesses (19,20) provided on either side of the blade (10) and intended to receive respectively two branches (23) situated at the end of one (6) of the wings (5,6) of the armature A with respect to which the said palette (10) is articulated.
  8. Trip switch according to any one of the preceding claims, characterized in that the blade (10) exhibits a circular arc shape whose radius is defined so as to bias the palette (1) onto its rear articulation abutment (24,25,32) during resetting via the pin (15).
  9. Trip switch according to Claim 7, characterized in that the aforementioned lugs (17,18) comprise respectively two bosses (29,34) opposite one another, situated respectively on the internal face of the said lugs (17,18) and housed in the aforementioned recesses (19,20), the said bosses (29,34) being intended to ensure the lateral positioning of the palette (1) and of the blade (10) with respect to the armature A.
  10. Electrical isolating apparatus comprising a trip switch according to any one of the preceding claims.
  11. Differential circuit breaker comprising a trip switch according to any one of the preceding claims.
EP05354025.8A 2004-09-02 2005-06-09 Electromagnetic trip and electronic circuit breaker containing it Active EP1632970B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0409304A FR2874740B1 (en) 2004-09-02 2004-09-02 ELECTROMAGNETIC TRIGGER AND ELECTRICAL CUTTING APPARATUS HAVING THE SAME

Publications (3)

Publication Number Publication Date
EP1632970A2 EP1632970A2 (en) 2006-03-08
EP1632970A3 EP1632970A3 (en) 2009-02-18
EP1632970B1 true EP1632970B1 (en) 2017-05-10

Family

ID=34950324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05354025.8A Active EP1632970B1 (en) 2004-09-02 2005-06-09 Electromagnetic trip and electronic circuit breaker containing it

Country Status (9)

Country Link
EP (1) EP1632970B1 (en)
CN (1) CN1747097B (en)
AR (1) AR050555A1 (en)
AU (1) AU2005205771B2 (en)
BR (1) BRPI0503707B1 (en)
EA (1) EA008953B1 (en)
ES (1) ES2636538T3 (en)
FR (1) FR2874740B1 (en)
NO (1) NO329292B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111681927A (en) * 2020-06-02 2020-09-18 上海电气集团股份有限公司 Buffer device of low-voltage circuit breaker
CN113793785A (en) * 2021-09-17 2021-12-14 乐清拓优电气有限公司 Tripping device of residual current circuit breaker

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410353A1 (en) * 1977-11-28 1979-06-22 Merlin Gerin Polarised relay for differential circuit breaker - has magnetic yoke having two L=shaped legs, one carrying de-energising coil and other completing loop with permanent magnet
DE3528470A1 (en) * 1985-08-08 1987-02-19 Bbc Brown Boveri & Cie Residual current device
SU1339690A1 (en) * 1985-11-11 1987-09-23 Харьковский институт инженеров коммунального строительства Maximum-current tripping device
FR2620264B1 (en) * 1987-09-03 1989-12-01 Merlin Gerin MAGNETIC TRIGGER WITH KNIFE JOINT
DE4110660C2 (en) 1991-04-02 1996-05-02 Felten & Guilleaume Energie Magnet system for a fast-switching hinged armature relay
DE19637077A1 (en) 1996-09-12 1998-03-19 Maier & Cie C Permanent magnet for the magnetic circuit of a magnetic release that can preferably be used in a residual current circuit breaker
FR2754933B1 (en) * 1996-10-23 1998-11-27 Schneider Electric Sa ELECTROMAGNETIC TRIGGER RELAY WITH AMORPHOUS CARBON COATING, AND METHOD FOR MANUFACTURING THE SAME
DE69736289T2 (en) * 1997-10-23 2007-08-30 Ge Power Controls Espana S.A., Mostoles Electromagnetic relay
FR2779568B1 (en) * 1998-06-04 2000-07-13 Schneider Electric Ind Sa ELECTRICAL CUT-OFF DEVICE INCLUDING A DIFFERENTIAL TRIP DEVICE AND CIRCUIT BREAKER INCLUDING SUCH A DEVICE
DE10117340C1 (en) * 2001-04-06 2002-10-10 Siemens Ag Electromagnetic trigger relay has blade joint formed on pole face outer edge directly by edge of holding element mounted flat on underside of armature and guide plate on core outer side
FR2823370B1 (en) * 2001-04-06 2003-10-24 Realisation De Disjoncteurs So ELECTROMAGNETIC TRIGGER COMPRISING A MOBILE ARMATURE AND A FIXED ARMATURE ONTO WHICH A GUIDING PART OF THE MOBILE ARMATURE IS SNAPSHOT

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AR050555A1 (en) 2006-11-01
BRPI0503707A (en) 2006-04-11
ES2636538T3 (en) 2017-10-06
AU2005205771A1 (en) 2006-03-16
NO20053926L (en) 2006-03-03
NO20053926D0 (en) 2005-08-23
FR2874740A1 (en) 2006-03-03
EA008953B1 (en) 2007-10-26
NO329292B1 (en) 2010-09-27
CN1747097B (en) 2012-04-25
CN1747097A (en) 2006-03-15
EP1632970A2 (en) 2006-03-08
AU2005205771B2 (en) 2009-10-08
EA200501234A1 (en) 2006-04-28
FR2874740B1 (en) 2006-10-20
EP1632970A3 (en) 2009-02-18
BRPI0503707B1 (en) 2023-01-24

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