EP0306383B1 - Magnetic tripper with knife articulation - Google Patents

Magnetic tripper with knife articulation Download PDF

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Publication number
EP0306383B1
EP0306383B1 EP19880402089 EP88402089A EP0306383B1 EP 0306383 B1 EP0306383 B1 EP 0306383B1 EP 19880402089 EP19880402089 EP 19880402089 EP 88402089 A EP88402089 A EP 88402089A EP 0306383 B1 EP0306383 B1 EP 0306383B1
Authority
EP
European Patent Office
Prior art keywords
blade
knife
pallet
armature
trip device
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.)
Expired - Lifetime
Application number
EP19880402089
Other languages
German (de)
French (fr)
Other versions
EP0306383A1 (en
Inventor
Michel Bonniau
Patrick Guillon
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0306383A1 publication Critical patent/EP0306383A1/en
Application granted granted Critical
Publication of EP0306383B1 publication Critical patent/EP0306383B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • 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

Definitions

  • the invention relates to an electromagnetic trip device with magnetic latching, in particular for a differential switch or circuit breaker comprising a U-shaped armature, the ends of the two legs of which constitute two coplanar pole surfaces, a pivoting pallet coming in the armed position of the trigger to stick. on said two pole surfaces for closing the magnetic circuit constituted by the armature and the pallet, a permanent magnet for polarizing said magnetic circuit and a trip coil surrounding the magnetic circuit, said pallet being pivotally mounted along the outer edge of the one of said pole surfaces, and cooperating with a bearing face integral with the frame, to position the pallet longitudinally.
  • a known trigger (FR-A-2261614) comprises a pivoting pallet having cutouts for positioning the pallet.
  • the edge of the knife coincide with the outer edge of the polar surface of the reinforcement on the side of the joint.
  • the cutting of the pallet is in the immediate vicinity of the polar surface thereof and when removing the burrs due to the stamping of the cutting, it is practically inevitable to damage the polar surface.
  • the choice of the material of the pallet is moreover determined by the magnetic properties, and this material generally does not have sufficient hardness to constitute a knife of a joint.
  • the present invention aims to allow the production of a high sensitivity electromagnetic trigger, in which the treatment of the pallet and more particularly of its pole surfaces, is independent of the articulation of the pivoting pallet.
  • the electromagnetic trip device is characterized in that the pivot line of the pallet is defined by a knife joint whose knife belongs to an independent retaining piece, rigidly secured to the pallet, which said retaining piece carries stops which in combination with said knife cooperate with a bearing face integral with the frame, to position the pallet longitudinally and limit the longitudinal displacements of the pallet relative to the frame and avoid wear and dispersion due to the displacements and that the retaining part has overhanging edges folded in a square which laterally frame the pallet and the edge of which is cut in a bevel to form a knife for the articulation of the pallet.
  • the retaining part is for example of steel, while the pallet can be of an iron-nickel alloy, of suitable magnetic property.
  • the retaining part may be a plate, which is fixed to the pallet by welding at the end of manufacture, in particular after treatment of the polar surfaces of the pallet.
  • the pallet is biased in the detachment position by a spring arranged so as to hold the knife against its bearing surface. The longitudinal movement of the pallet, corresponding to detachment of the knife from its bearing face, is limited by stops arranged opposite the knife on the retaining part secured to the pallet.
  • the bearing face (s) of the knife of the joint are formed on a plate rigidly fixed to the frame and having two legs which project from the pole surface of the frame to fit between the knife and the stops carried by the retaining part.
  • the material of this plate is of course chosen to constitute with the knife an articulation with low friction and high operating reliability.
  • the magnetic circuit of a high-sensitivity electromagnetic trip device consists of a U-shaped frame 10 and a pivoting pallet 12.
  • the ends of the two arms 14, 16 of the frame 10 are arranged in polar surfaces 18 , 20 arranged in the same plane, against which surfaces, the pallet 12 is applied in the armed position of the trigger.
  • the arm 14 of the armature 10 carries a coil 22, and between the arms 14,16 is interposed a permanent magnet 24 for polarizing the armature 10.
  • the pallet 12 can pivot on an axis coinciding with the outer edge 26 of the pole surface 20 and it is biased in the detached position by a spring 28.
  • the assembly is housed inside a housing 30 crossed by control pins 32.
  • the pallet 12 is constituted by a rectangular plate of length greater than the spacing of the branches 14,16, so as to project beyond the side of the articulation 26 for the anchoring of the return spring 28.
  • This plate 12 is chosen from an appropriate magnetic material and undergoes treatments, in particular polishing, necessary for the production of optimal polar surfaces.
  • On the pallet 12 is fixed in the area of the articulation, a retaining part 34 which projects laterally from the pallet 12 and the branch 16 of the frame 10.
  • the retaining part 34 in the form of a plate, for example in steel is pressed against the upper face of the pallet 12 opposite the pole surfaces and is rigidly fixed to this pallet 12 by welding, for example by two welding points 36.
  • the two projecting edges of the retaining piece 34 are folded in at square 38 , 40 for laterally framing the pallet 12 and the edges of these brackets 38.40 are cut at a bevel to form knives 42 of the articulation of the pallet 12.
  • a plate 44 ending in two legs 46,48 projecting from the pole surface 20 of the frame 10.
  • the two legs 46,48 are arranged opposite the folded brackets 38,40 and the knives 42 come to bear on these legs 46.48 which constitutes ent the bearing face of the joint.
  • the return spring 28 is slightly inclined so as to exert a component for supporting the knives 42 on the legs 46, 48.
  • the legs 46, 48 are inserted between the knives 42, and retaining stops 50, 52, limiting the longitudinal movement of the pallet 12.
  • the knife joint 42 unidirectionally positions the pallet 12 in the longitudinal direction, leaving the pallet complete freedom to press down on the surfaces polar 18.20.
  • the knives 42 are aligned with the outer edge 26 of the pole surface 20 which constitutes the pivot axis of the pallet 12.
  • the pallet 12 pivots while being guided by the knives 42 and the edge 26, which avoids any relative movement of friction between the pole surfaces of the frame 10 and of the pallet 12.
  • the guiding functions are entirely ensured by the retaining part 34 which is arranged accordingly while the pallet 12 only performs the magnetic functions of closing and opening the magnetic circuit of the trip device.
  • the retaining part 34 can be arranged differently, and in particular be constituted by a machined part, fixed in any way to the pallet 12.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
  • Scissors And Nippers (AREA)

Description

L'invention est relative à un déclencheur électromagnétique à accrochage magnétique notamment pour un interrupteur ou disjoncteur différentiel comprenant une armature en forme de U, dont les extrémités des deux jambes constituent deux surfaces polaires coplanaires, une palette pivotante venant en position armée du déclencheur se coller sur lesdites deux surfaces polaires pour fermer le circuit magnétique constitué par l'armature et la palette un aimant permanent de polarisation dudit circuit magnétique et une bobine de déclenchement entourant le circuit magnétique, ladite palette étant montée à pivotement le long du bord extérieur de l'une desdites surfaces polaires, et coopèrant avec une face d'appui solidaire de l'armature, pour positionner longitudinalement la palette.The invention relates to an electromagnetic trip device with magnetic latching, in particular for a differential switch or circuit breaker comprising a U-shaped armature, the ends of the two legs of which constitute two coplanar pole surfaces, a pivoting pallet coming in the armed position of the trigger to stick. on said two pole surfaces for closing the magnetic circuit constituted by the armature and the pallet, a permanent magnet for polarizing said magnetic circuit and a trip coil surrounding the magnetic circuit, said pallet being pivotally mounted along the outer edge of the one of said pole surfaces, and cooperating with a bearing face integral with the frame, to position the pallet longitudinally.

Il est important de disposer de déclencheurs électromagnétiques du genre mentionné, à très grande sensibilité qui présentent une faible dispersion et dont le fonctionnement est fiable. La fabrication de ces déclencheurs électromagnétiques à grande sensibilité doit être particulièrement soignée, notamment au niveau des surfaces polaires et de l'articulation de la palette pivotante. Un déclencheur connu (FR-A-2261614) comporte une palette pivotante ayant des découpes de positionnement de la palette. Afin d'éviter tout mouvement relatif et toute friction des surfaces polaires les unes sur les autres au cours du mouvement de pivotement de la palette, il est essentiel de faire coïncider l'arête du couteau avec le bord extérieur de la surface polaire de l'armature du côté de l'articulation. La découpe de la palette est à proximité immédiate de la surface polaire de celle-ci et lors de l'enlèvement des bavures dues à l'estampage de la découpe, il est pratiquement inévitable d'endommager la surface polaire. Le choix du matériau de la palette est de plus déterminé par les propriétés magnétiques, et ce matériau n'a généralement pas la dureté suffisante pour constituer un couteau d'une l'articulation. Les traitements des surfaces polaires, notamment le polissage électrolytique, affectent les propriétés du couteau et ne permettent pas la réalisation d'une articulation quasi parfaite, indispensable au bon fonctionnement du déclencheur.It is important to have electromagnetic trip devices of the kind mentioned, with very high sensitivity which have a low dispersion and whose operation is reliable. The manufacture of these highly sensitive electromagnetic trip devices must be particularly careful, especially at the pole surfaces and the articulation of the pivoting pallet. A known trigger (FR-A-2261614) comprises a pivoting pallet having cutouts for positioning the pallet. In order to avoid any relative movement and any friction of the polar surfaces on each other during the pivoting movement of the pallet, it is essential to make the edge of the knife coincide with the outer edge of the polar surface of the reinforcement on the side of the joint. The cutting of the pallet is in the immediate vicinity of the polar surface thereof and when removing the burrs due to the stamping of the cutting, it is practically inevitable to damage the polar surface. The choice of the material of the pallet is moreover determined by the magnetic properties, and this material generally does not have sufficient hardness to constitute a knife of a joint. The treatments of the polar surfaces, in particular the electrolytic polishing, affect the properties of the knife and do not allow the achievement of an almost perfect joint, essential for the proper functioning of the trigger.

La présente invention a pour but de permettre la réalisation d'un déclencheur électromagnétique à haute sensibilité, dans lequel le traitement de la palette et plus particulièrement de ses surfaces polaires, est indépendant de l'articulation de la palette pivotante.The present invention aims to allow the production of a high sensitivity electromagnetic trigger, in which the treatment of the pallet and more particularly of its pole surfaces, is independent of the articulation of the pivoting pallet.

Le déclencheur électromagnétique selon l'invention est caractérisé en ce que la ligne de pivotement de la palette est définie par une articulation à couteau dont le couteau appartient à une pièce de retenue indépendante, rigidement assujettie à la palette, que ladite pièce de retenue porte des butées qui en combinaison avec ledit couteau coopèrent avec une face d'appui solidaire de l'armature, pour positionner longitudinalement la palette et limiter les déplacements longitudinaux de la palette par rapport à l'armature et évitent l'usure et la dispersion dues aux déplacements et que la pièce de retenue présente des bords débordants repliés en équerre qui encadrent latéralement la palette et dont la tranche est taillée en biseau pour constituer un couteau de l'articulation de la palette.The electromagnetic trip device according to the invention is characterized in that the pivot line of the pallet is defined by a knife joint whose knife belongs to an independent retaining piece, rigidly secured to the pallet, which said retaining piece carries stops which in combination with said knife cooperate with a bearing face integral with the frame, to position the pallet longitudinally and limit the longitudinal displacements of the pallet relative to the frame and avoid wear and dispersion due to the displacements and that the retaining part has overhanging edges folded in a square which laterally frame the pallet and the edge of which is cut in a bevel to form a knife for the articulation of the pallet.

En reportant le couteau de l'articulation sur une pièce indépendante de la palette, les matériaux de la palette et de cette pièce d'articulation peuvent être différents et sont bien entendu choisis en fonction des propriétés requises. La pièce de retenue est par exemple en acier, tandis que la palette peut être en un alliage fer-nickel, de propriété magnétique appropriée. La pièce de retenue peut être une plaquette, qui est fixée à la palette par soudage en fin de fabrication, notamment après traitement des surfaces polaires de la palette. La palette est sollicitée en position de décollement par un ressort disposé de manière à maintenir le couteau contre sa surface d'appui. Le mouvement longitudinal de la palette, correspondant à un décollement du couteau de sa face d'appui, est limité par des butées ménagées en regard du couteau sur la pièce de retenue solidarisée à la palette. La ou les faces d'appui du couteau de l'articulation sont ménagées sur une plaque rigidement fixée à l'armature et présentant deux pattes qui font saillie de la surface polaire de l'armature pour s'insérer entre le couteau et les butées portées par la pièce de retenue. Le matériau de cette plaque est bien entendu choisi pour constituer avec le couteau une articulation à faible frottement et à grande fiabilité de fonctionnement.By transferring the knife from the articulation to an independent part of the pallet, the materials of the pallet and of this articulation part can be different and are of course chosen according to the properties required. The retaining part is for example of steel, while the pallet can be of an iron-nickel alloy, of suitable magnetic property. The retaining part may be a plate, which is fixed to the pallet by welding at the end of manufacture, in particular after treatment of the polar surfaces of the pallet. The pallet is biased in the detachment position by a spring arranged so as to hold the knife against its bearing surface. The longitudinal movement of the pallet, corresponding to detachment of the knife from its bearing face, is limited by stops arranged opposite the knife on the retaining part secured to the pallet. The bearing face (s) of the knife of the joint are formed on a plate rigidly fixed to the frame and having two legs which project from the pole surface of the frame to fit between the knife and the stops carried by the retaining part. The material of this plate is of course chosen to constitute with the knife an articulation with low friction and high operating reliability.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre, d'un mode de mise en oeuvre de l'invention donné à titre d'exemple non limitatif, et représenté au dessin annexé dans lequel:

  • la figure 1 est une vue schématique en coupe d'un déclencheur électromagnétique selon l'invention;
  • la figure 2 est une vue de détail de la figure 1, montrant la palette en position attirée;
  • la figure 3 est une vue en plan de la palette, représentée à la figure 2.
Other advantages and characteristics will emerge more clearly from the description which follows, of an embodiment of the invention given by way of nonlimiting example, and represented in the appended drawing in which:
  • Figure 1 is a schematic sectional view of an electromagnetic trip device according to the invention;
  • Figure 2 is a detail view of Figure 1 showing the pallet in the attracted position;
  • FIG. 3 is a plan view of the pallet, shown in FIG. 2.

Sur les figures, le circuit magnétique d'un déclencheur électromagnétique à haute sensibilité est constitué par une armature 10 en forme de U et une palette pivotante 12. Les extrémités des deux branches 14,16 de l'armature 10 sont agencées en surfaces polaires 18,20 disposées dans un même plan, contre lesquelles surfaces, la palette 12 vient s'appliquer en position armée du déclencheur. La branche 14 de l'armature 10 porte une bobine 22, et entre les branches 14,16 est intercalé un aimant permanent 24 de polarisation de l'armature 10. La palette 12 peùt pivoter sur un axe coincidant avec le bord extérieur 26 de la surface polaire 20 et elle est sollicitée en position décollée par un ressort 28. L'ensemble est logé à l'intérieur d'un boîtier 30 traversée par des pions de commande 32. De tels déclencheurs électromagnétiques sont bien connus, et il suffit de rappeler que la palette 12 est maintenue en position accolée sur l'armature 10 par l'aimant permanent 24 à l'encontre de la force de rappel du ressort 28. L'excitation de la bobine 22 commande la libération de la palette 12 qui pivote sous l'action du ressort 28 en position de déclenchement.In the figures, the magnetic circuit of a high-sensitivity electromagnetic trip device consists of a U-shaped frame 10 and a pivoting pallet 12. The ends of the two arms 14, 16 of the frame 10 are arranged in polar surfaces 18 , 20 arranged in the same plane, against which surfaces, the pallet 12 is applied in the armed position of the trigger. The arm 14 of the armature 10 carries a coil 22, and between the arms 14,16 is interposed a permanent magnet 24 for polarizing the armature 10. The pallet 12 can pivot on an axis coinciding with the outer edge 26 of the pole surface 20 and it is biased in the detached position by a spring 28. The assembly is housed inside a housing 30 crossed by control pins 32. Such electromagnetic triggers are well known, and it suffices to recall that the pallet 12 is held in the adjoining position on the armature 10 by the permanent magnet 24 against the return force of the spring 28. The excitation of the coil 22 controls the release of the pallet 12 which pivots under the action of the spring 28 in the release position.

Selon l'invention, la palette 12 est constituée par une plaque rectangulaire de longueur supérieure à l'écartement des branches 14,16, de manière à déborder du côté de l'articulation 26 pour l'ancrage du ressort de rappel 28. Cette plaque 12 est choisie en un matériau magnétique approprié et subit des traitements notamment de polissage, nécessaires à la réalisation de surfaces polaires optimales. Sur la palette 12 est fixée dans la zone de l'articulation, une pièce de retenue 34 qui déborde latéralement de la palette 12 et de la branche 16 de l'armature 10. La pièce de retenue 34 en forme de plaquette, par exemple en acier est plaquée sur la face supérieure de la palette 12 opposée aux surfaces polaires et est fixée rigidement à cette palette 12 par soudure, par exemple par deux points de soudure 36. Les deux bords débordants de la pièce de retenue 34 sont repliés en équerre 38,40 pour encadrer latéralement la palette 12 et les tranches de ces équerres 38,40 sont taillées en biseau pour constituer des couteaux 42 de l'articulation de la palette 12. Au bord extérieur de la branche 16 de l'armature 10, est fixée une plaque 44 se terminant par deux pattes 46,48 faisant saillie de la surface polaire 20 de l'armature 10. Les deux pattes 46,48 sont disposées en face des équerres repliées 38,40 et les couteaux 42 viennent en appui de ces pattes 46,48 qui constituent la face d'appui de l'articulation. Le ressort de rappel 28 est légèrement incliné de manière à exercer une composante d'appui des couteaux 42 sur les pattes 46,48. Les pattes 46,48 sont insérées entre les couteaux 42, et des butées de retenue 50,52, limitant le déplacement longitudinal de la palette 12.According to the invention, the pallet 12 is constituted by a rectangular plate of length greater than the spacing of the branches 14,16, so as to project beyond the side of the articulation 26 for the anchoring of the return spring 28. This plate 12 is chosen from an appropriate magnetic material and undergoes treatments, in particular polishing, necessary for the production of optimal polar surfaces. On the pallet 12 is fixed in the area of the articulation, a retaining part 34 which projects laterally from the pallet 12 and the branch 16 of the frame 10. The retaining part 34 in the form of a plate, for example in steel is pressed against the upper face of the pallet 12 opposite the pole surfaces and is rigidly fixed to this pallet 12 by welding, for example by two welding points 36. The two projecting edges of the retaining piece 34 are folded in at square 38 , 40 for laterally framing the pallet 12 and the edges of these brackets 38.40 are cut at a bevel to form knives 42 of the articulation of the pallet 12. At the outer edge of the branch 16 of the frame 10, is fixed a plate 44 ending in two legs 46,48 projecting from the pole surface 20 of the frame 10. The two legs 46,48 are arranged opposite the folded brackets 38,40 and the knives 42 come to bear on these legs 46.48 which constitutes ent the bearing face of the joint. The return spring 28 is slightly inclined so as to exert a component for supporting the knives 42 on the legs 46, 48. The legs 46, 48 are inserted between the knives 42, and retaining stops 50, 52, limiting the longitudinal movement of the pallet 12.

Il est facile de voir qu'en position attirée de la palette 12, représentée à la figure 2, l'articulation à couteau 42 positionne unidirectionnellement la palette 12 en direction longitudinale, en laissant une entière liberté à la palette de se plaquer sur les surfaces polaires 18,20. Les couteaux 42 sont alignés avec le bord extérieur 26 de la surface polaire 20 qui constitue l'axe de pivotement de la palette 12. Lors d'un déclenchement, la palette 12 pivote en étant guidée par les couteaux 42 et le bord 26, ce qui évite tout mouvement relatif de friction entre les surfaces polaires de l'armature 10 et de la palette 12. Les fonctions de guidage sont entièrement assurées par la pièce de retenue 34 qui est agencée en conséquence tandis que la palette 12 assure uniquement les fonctions magnétiques de fermeture et d'ouverture du circuit magnétique du déclencheur.It is easy to see that in the attracted position of the pallet 12, shown in FIG. 2, the knife joint 42 unidirectionally positions the pallet 12 in the longitudinal direction, leaving the pallet complete freedom to press down on the surfaces polar 18.20. The knives 42 are aligned with the outer edge 26 of the pole surface 20 which constitutes the pivot axis of the pallet 12. When triggered, the pallet 12 pivots while being guided by the knives 42 and the edge 26, which avoids any relative movement of friction between the pole surfaces of the frame 10 and of the pallet 12. The guiding functions are entirely ensured by the retaining part 34 which is arranged accordingly while the pallet 12 only performs the magnetic functions of closing and opening the magnetic circuit of the trip device.

Il est clair que la pièce de retenue 34 peut étre agencée différemment, et notamment être constituée par une pièce usinée, fixée d'une manière quelconque à la palette 12.It is clear that the retaining part 34 can be arranged differently, and in particular be constituted by a machined part, fixed in any way to the pallet 12.

Claims (4)

  1. An electromagnetic trip device with magnetic latching, notably for an earth leakage switch or circuit breaker, comprising a U-shaped armature (10), the ends of the two branches (14, 16) of which form two coplanar polar surfaces (18, 20), a pivoting blade coming to press on said two polar surfaces (18,20) in the loaded position of the trip device to close the magnetic circuit formed by the armature and the blade, a permanent polarization magnet (24) of said magnetic circuit and a trip coil (22) surrounding the magnetic circuit, said blade (12) being mounted with pivoting along the external edge of one (20) of said polar surfaces, characterized in that the pivoting line of the blade (12) is defined by a knife-blade articulation the knife-blade (42) of which belongs to an independent retaining part (34), rigidly secured to the blade (12), that said retaining part (34) bears stops (50,52) which in conjunction with said knife-blade (42) cooperate with a bearing face (46,48) securedly fixed to the armature (10) to position the blade (12) longitudinally and to limit the longitudinal movements of the latter with respect to the armature (10) and prevent wear and dispersion due to the movements, and that the retaining part (34) has overlapping edges folded into brackets (38,40) which frame the blade (12) laterally and the edge of which is bevelled to form a knife-blade (42) for articulation of the blade (12).
  2. The electromagnetic trip device according to claim 1, characterized in that the external edge of the armature (10) has fixed to it a plate (44) extended by two lugs (46,48) protruding out from the associated polar surface (20) to frame the blade (12) laterally, said lugs (46,48) being inserted with clearance between the knife-blade (42) and said stops (50,52) to position the blade (12) longitudinally.
  3. The electromagnetic trip device according to claim 1 or 2, characterized in that a spring (28) biases the blade (12) to the separated tripped position, by exerting on the blade an application component of the knife-blade (42) on said bearing face (46,48).
  4. The electromagnetic trip device according to claim 1, 2 or 3, characterized in that said retaining part (34) is a small steel plate placed on the opposite face from the polar surfaces of the blade in the articulation zone and securedly united to the blade (12) by welding, said blade presenting two curved lateral extensions forming brackets (38, 40), whose edges are cut into a knife-blade (42).
EP19880402089 1987-09-03 1988-08-11 Magnetic tripper with knife articulation Expired - Lifetime EP0306383B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712343A FR2620264B1 (en) 1987-09-03 1987-09-03 MAGNETIC TRIGGER WITH KNIFE JOINT
FR8712343 1987-09-03

Publications (2)

Publication Number Publication Date
EP0306383A1 EP0306383A1 (en) 1989-03-08
EP0306383B1 true EP0306383B1 (en) 1993-04-07

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Application Number Title Priority Date Filing Date
EP19880402089 Expired - Lifetime EP0306383B1 (en) 1987-09-03 1988-08-11 Magnetic tripper with knife articulation

Country Status (6)

Country Link
EP (1) EP0306383B1 (en)
JP (1) JP2765865B2 (en)
CN (1) CN1018685B (en)
DE (1) DE3880055T2 (en)
ES (1) ES2040878T3 (en)
FR (1) FR2620264B1 (en)

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FR2823371B1 (en) * 2001-04-06 2004-11-26 Realisation De Disjoncteurs So ELECTROMAGNETIC TRIGGER COMPRISING AN ELECTROMAGNETIC CIRCUIT WHOSE MOBILE FRAME IS CAPABLE OF OCCUPATING THREE POSITIONS OF STABLE BALANCE
FR2823369B1 (en) * 2001-04-06 2003-10-24 Realisation De Disjoncteurs So ELECTROMAGNETIC TRIGGER COMPRISING AN ELECTROMAGNETIC CIRCUIT BASED ON AN ELASTICALLY DEFORMABLE BASE AND ELECTROMAGNETIC TRIGGER INCLUDING A FLOATING COIL
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
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
FR2874740B1 (en) * 2004-09-02 2006-10-20 Schneider Electric Ind Sas ELECTROMAGNETIC TRIGGER AND ELECTRICAL CUTTING APPARATUS HAVING THE SAME
FR2877137B1 (en) * 2004-10-21 2006-12-22 Schneider Electric Ind Sas ELECTROMAGNETIC TRIGGER AND ELECTRIC PROTECTION APPARATUS HAVING THE SAME
DE102007010946B4 (en) * 2006-06-14 2018-03-08 Eaton Industries Gmbh Overload release for a multipolar electrical switchgear
DE102012202084A1 (en) * 2012-02-13 2013-08-14 Siemens Aktiengesellschaft Hinged armature bearing for magnetic release
CN104282508B (en) * 2014-10-13 2016-08-24 浙江正泰电器股份有限公司 A kind of electromagnetic trip device with tripping mechanism
US11538650B1 (en) * 2021-10-22 2022-12-27 Siemens Industry, Inc. Air gap driving mechanism of a solid-state circuit breaker includes permanent magnet(s) for contact separation

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FR1541052A (en) * 1967-08-11 1968-10-04 Ind Electr De La Seine L Ultra-sensitive electro-magnetic trip unit
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DE3880055T2 (en) 1993-10-14
CN1032604A (en) 1989-04-26
CN1018685B (en) 1992-10-14
FR2620264B1 (en) 1989-12-01
ES2040878T3 (en) 1993-11-01
JP2765865B2 (en) 1998-06-18
EP0306383A1 (en) 1989-03-08
DE3880055D1 (en) 1993-05-13
JPH01157026A (en) 1989-06-20
FR2620264A1 (en) 1989-03-10

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