EP1248278A1 - Electromagnetic tripdevice with an electromagnetic circuit and an armature capable of maintaining three stable poritions - Google Patents

Electromagnetic tripdevice with an electromagnetic circuit and an armature capable of maintaining three stable poritions Download PDF

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Publication number
EP1248278A1
EP1248278A1 EP02290799A EP02290799A EP1248278A1 EP 1248278 A1 EP1248278 A1 EP 1248278A1 EP 02290799 A EP02290799 A EP 02290799A EP 02290799 A EP02290799 A EP 02290799A EP 1248278 A1 EP1248278 A1 EP 1248278A1
Authority
EP
European Patent Office
Prior art keywords
armature
trip device
electromagnetic
electromagnetic trip
fixed
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
EP02290799A
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German (de)
French (fr)
Other versions
EP1248278B1 (en
Inventor
Stéphane Bailly
Damien Bourdin
Thierry Combreau
Bernard Leclercq
Bruno Spinner
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.)
Serd D'etude Et De Realisation De Disjoncteurs Ste
Original Assignee
Serd D'etude Et De Realisation De Disjoncteurs Ste
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Publication of EP1248278A1 publication Critical patent/EP1248278A1/en
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Publication of EP1248278B1 publication Critical patent/EP1248278B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • H01H71/327—Manufacturing or calibrating methods, e.g. air gap treatments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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 comprising a electromagnetic circuit comprising a fixed armature as well as an armature mobile capable of occupying two positions of stable equilibrium, namely a working position in which it is pressed against the fixed frame and closes the electromagnetic circuit, and a rest position in which it is away from the fixed armature and opens the electromagnetic circuit.
  • An electromagnetic trip device of this type is known from the document FR-A-2 620 264.
  • This type of trigger has a number of drawbacks, among which difficult access to the air gap between the reinforcements once these assemblies. However, there may remain undesirable dust which is likely to modify the air gap and, therefore, affect the proper functioning of the trigger.
  • the invention aims to solve in particular the aforementioned drawbacks in providing a simple design electromagnetic trip unit which reliable, precise and durable operation.
  • the invention provides an electromagnetic trigger such as mentioned in the introduction, characterized in that the movable frame is suitable for occupy a third stable equilibrium position in which it is spread of the fixed frame beyond the rest position.
  • the air gap is thus definitively free of all dust undesirable and it remains constant in a lasting manner.
  • the movable armature is thus positioned stably and precise, and at the same time easily reversible, in its third position.
  • an electromagnetic trip device 1 to high sensitivity for a switch or circuit breaker which includes, in a case 2 assumed to be fixed, composed of a base 3 capped with a cover 4, a circuit electromagnetic 5 comprising a fixed frame 6 in the shape of a U, secured the housing 2 and a movable frame 7 called a pallet, capable of rotate to open or close the electromagnetic circuit 5.
  • trigger 1 is described with reference to this mark, according to the orientation adopted in FIG. 2, which corresponds to the usual use most common of trigger 1.
  • the fixed frame 6 and the pallet 7 are both produced in a ferromagnetic material, such as an Iron - Nickel alloy.
  • the fixed frame 6 comprises a first branch 8 called front and a second branch 9 called rear, connected by a base 10 resting on the base 3 case 2.
  • the electromagnetic circuit 5 comprises a coil 11 comprising a carcass 12 on which a coil 13 is wound, the carcass 12 being threaded on the front branch 8 of the fixed frame 6 and secured to the base 3.
  • the magnet 14 for the magnetic polarization of the fixed armature 6.
  • the magnet 14, shaped parallelepiped, is fixed by one of its ends on the base 10 of the fixed armature 6, preferably by welding. More specifically, the magnet 14 is fixed on an upper face 15 of the base 10, which also has a face lower 16 opposite.
  • Pallet 7 is likely to occupy at least two equilibrium positions stable, i.e. a working or engaged position, in which it found pressed against the branches 8, 9 of the fixed armature 6 and closes the circuit electromagnetic 5, and a rest or triggered position, in which it is moved away from the fixed armature 6 and opens the electromagnetic circuit 5.
  • Pallet 7 is biased towards its position triggered by a spring 17 of recall operating in traction.
  • Pallet 7 has two opposite parallel flat faces, namely a upper face 18 and a lower face 19.
  • the free ends 20, 21 respectively of the front 8 and rear 9 branches form polarization surfaces located substantially in the same plane polarization P, with which the face cooperates in the engaged position lower 19 of pallet 7.
  • Pallet 7 has the shape of a trident and has a body 22 of shape rectangular of which project two lateral wings 23, 24 bent backwards, and whose rear edges 25 are bevelled to form knives 26 for the articulation of the pallet 7.
  • Each knife 26 has an inclined face 27 facing upwards, terminated downwards by an edge 28 situated substantially in the plane of the lower face 19 of the pallet 7.
  • the edges 28 together form an axis A of pivoting of the pallet 7.
  • the rear branch 9 which has a front face 29 and a face rear 30 opposite, is fixed by snap-fastening or by any other means equivalent to a plate 31 guiding the pallet 7, the latter being pivotally mounted relative to the plate 31.
  • This plate 31 is a single piece produced for example in a metallic material for stiffness. It has a plated body 32 against the rear face 30 of the rear branch 9, which it substantially covers. This body 32 is extended upward, in the form of a fork, by two legs upper 33, 34 similar which protrude from the fixed frame 6 projecting from the plane of polarization P, arranged opposite the wings 23, 24 of the pallet 7, and against which the knives are applied 26.
  • each tab 33, 34 has a front face 35 support against which is applied, under the action of the return spring 17, the edge 28 of the knife, 26 in the engaged position ( Figure 4).
  • the pallet 7 In the triggered position, the pallet 7 is in linear contact, through its body 22, with the rear branch 9, the lower face 19 of the pallet 7 being in abutment on a rear edge 36 of the free end 21 of the rear branch 9 ( Figure 5).
  • the pallet 7 has, at its wings 23, 24, a transverse extension greater than that of the rear branch 9, the knives 26 being permanently separated laterally therefrom.
  • the knives 26 never being in contact with the rear branch 9, they do not produce, during possible wear, no particles liable to deposit on the polarization surface 20, 21.
  • Pallet 7 has a tail 37 towards the rear which extends beyond wings 23, 24 projecting from them, which is, being free to move, between the legs 33, 34 of the plate 31, and in which is anchored one of the upper 38 ends of the return spring 17.
  • This upper end 38 of the return spring 17 forms a loop inserted in a through hole 39 made in the tail 37, beyond the edges 28 towards the rear, so as to form a cantilever allowing the pivoting of the pallet 7, under the action of the spring 17, around the axis A formed by its edges 28.
  • the plate 31 ends down with a folded lower tab 40 backwards, in which the other lower end 41 of the spring is anchored recall 17.
  • the upper legs 33, 34 are each extended, upwards, by a bent extension 42 forming a hook defining a housing 43 likely to receive the pallet 7.
  • the hook 42 comprises, towards the rear, an inclined bottom 44 connected to the tab 33, 34 by a part 45 folded back at right angles to the tab 33, 34, and, upwards, a return 46 folded at right angles to the front relative to the background 44.
  • the bottom 44 has a bearing surface 47 facing forward and towards the top, while the return 46 has a bearing surface 48 facing the fixed armature 6, that is to say towards the front and down.
  • Pallet 7 is likely to occupy a third position of equilibrium stable, called lifted, in which it is inclined and is separated from the fixed armature 6 beyond the rest position, and in which it cooperates with the hook 42 being received in the housing 43 ( Figures 6, 7, 8).
  • the tail 37 of the pallet 7 has, towards the rear, an end portion 49 reduced transverse extension delimited forwards by two recesses lateral 50, 51 forming stops.
  • Pallet 7 can be moved to its raised position from its position triggered by the action, for example, of an automated gripping device (not shown), which comes to grip the pallet 7 in the triggered position then, pulling on the spring, place the pallet 7 in the raised position in cooperation with the housing 43.
  • an automated gripping device not shown
  • the pallet 7 can be restored to the triggered position - or directly in the engaged position - from the raised position, by the same automated gripping device, which, coming to grip the pallet 7, moves it away from the housing 43 by pulling on spring 17 and then depositing it on the fixed frame 6.
  • the spring 17 is slightly tilted back, from top to bottom.
  • This cleaning which takes place in particular when the trigger 1 is mounted, can be performed by ultrasound, by spraying, in particular by cryogenic spraying such as a jet of carbon dioxide, or by any other known equivalent process of the skilled person.
  • the parts 45 of the hooks 42 folded backwards each have a recess 52 inwards, which the pallet 7 bypasses during its passage from the triggered position to the raised position, before coming press against the bottom 44 of the hook 42.
  • the plate 31 has, in its lower part, means latching integrated in the form of two arms 54, 55 projecting from the body 32 in its lower part, made of material with it and folded at right angles to the front, and which surround the rear branch 9 near the base 10 of the fixed frame 6.
  • the arms 54, 55 are arranged between, on the one hand, upwards, two ears 56, 57 projecting transversely of the rear branch 9 approximately halfway up the latter, and on the other hand, towards the bottom, the base 10 of the fixed frame 6.
  • Each arm 54, 55 also has, on its upper edge at vicinity of the body 32, a bump 53 projecting upwards and which, under the effect of the tension of the spring 17 on the plate 31, is in abutment against a face lower of the corresponding ear 56, 57 so as to make up for the clearances elevation likely to appear between the plate 31 and the fixed frame 9.
  • the arms 54, 55 are resiliently flexible, and each has a boss 58 projecting inwards.
  • each arm 54, 55 is made, at the level of the boss 58, a U or V cut delimiting a tooth 59 which projects from the arm 54, 55 towards the body 32 of the plate 31, and has a bearing surface 60 facing the rear looking at the body 32.
  • the plate body 32 has, facing and in line with the teeth 59, a tongue 61 formed by a V-shaped cutout in the plate body 32 and which, in the absence of stress, is tilted forward.
  • the tongue 61 has a certain elasticity so that, in position latched, the rear branch 9 is clamped between the teeth 59 and this tongue 61.
  • the conformation of the plate 31, in particular of the arms 54, 55, by compared to the fixed frame, is thus capable, by itself, of allowing rigid fixing by snap-fastening, of the plate 31 on the fixed frame 6.
  • the base 3 and the cover 4 are two monobloc pieces each produced by molding a synthetic material such as PVC, polypropylene, polyoxymethylene, or equivalent.
  • the base 3 comprises a bottom wall 62 on which the circuit rests electromagnetic 5, bordered by two side walls 63, 64 facing each other, of which protruding teeth 65 outwards for the snap-fastening of the cover 4.
  • the side walls 63, 64 extend forwardly beyond the wall of bottom 62, and the base 3 has, at the front, a hole 66 passing through in section rectangular, extended from one wall 63 to the other 64.
  • This hole 66 is bordered forwards by a crosspiece 67 forming the end front of the base 3, and towards the rear by a partition 68 which separates it from the wall of background 62.
  • the base 3 also has two identical pairs of nipples 69, 70 arranged transversely opposite, at each of the junctions between the base 3 and the side walls 63, 64. Each pair comprises a first 69 and a second 70 nipples protruding upwards and inwards, at the junction between the side wall 63, 64 and the bottom wall 62.
  • the first stud 69 located near the partition 68, has transverse and elevation dimensions respectively greater than and less than those of the second nipple 70.
  • Each nipple 69, 70 is rounded inward, the nipples 69, 70 together delimiting, at the level of the bottom wall 62, a reception area 71 of the base 10 of the fixed frame 6.
  • the bottom wall 62 has, at the level of the reception area 71, a zone 72 elastically deformable, this zone 72 being more particularly able to sink elastically downwards under the effect of a pressure which would be applied from top to bottom.
  • the base 3 has, near the center of this deformable zone 72, a pin 73 which projects from the bottom wall 62 upwards and has one end free 74 forming a localized bearing surface relative to the deformable zone 72.
  • this zone 72 is here inscribed in a circle inside which the bottom wall 62 has a conical section with a taper facing downwards, the bottom wall 62 tapering from the edge of said circle to its center - that is to say at the right of pawn 73.
  • the cover 4 is in turn a hollow part, generally in the form parallelepiped, having an upper wall 75 bordered by a wall front 76, a rear wall 77, and two side walls 78, 79 which define together, downwards, an opening 80 through which the cover 4 is intended to be associated with the base 3.
  • each side wall 78, 79 has two legs 81 paired in each of which is made a window 82 intended to cooperate with one of the teeth 65 of the base 3 to produce snap on cover 4.
  • each side wall 78, 79 has a notch 83 between the legs 81, intended to cooperate with a complementary bead 84 in projecting outwards on each side wall 63, 64 of the base 3.
  • Each side wall 78, 79 of the cover 4 also has a inner surface 85 along which runs a rib 86 projecting towards the interior, which extends from the upper wall 75 towards the opening 80.
  • This rib 86 has a lower end portion 87 projecting from the notch 83 downwards, terminated by a surface 88 forming a stop.
  • the fixed armature 6 When mounting the trigger 1, the fixed armature 6 is placed on the base 3, its base 10 being placed in the reception area 71, which is complementary, by being inserted between the nipples 69, 70 which frame the area deformable 72 and which, forming shims, limit the longitudinal travel and possibly transverse of the fixed frame 6, limiting the travel transverse which can also be produced by the side walls 63, 64.
  • the underside 16 of the base rests on the pin 73 while being in contact with the bearing surface 74 thereof, which is of limited area with respect to that of the deformable zone 72 in order to concentrate the stresses.
  • the latching of the cover 4 on the base 3, with the stop 88 of the rib 86 looking at the deformable zone 72, causes, by the dimensions and the conformation of the base 3, of the cover 4 and of the base 10 of the fixed frame 6, the support of this stop 88 against the upper face 15 of the base 10 against stress on the deformable zone 72.
  • the base 10 is then clamped, maintained, immobilized in elevation between the pin 73 and the rib 86, the deformable zone 72 urging, under the effect of its own elasticity, the base 10 towards the cover 4.
  • base 10 presses on pin 73, which causes the deformable zone 72 to sink in and, by the elasticity of this last, the catching up of games likely to appear between the base 10 of the fixed frame 6, the base 3, and the cover 4, and the precise positioning of the fixed frame 6 relative to the housing 2.
  • the cover 4 has, on its front 76 and rear 77 walls, two fixing lugs 89, 90 perforated or hollowed out in the shape of an ear, for securing trigger 1 on a protective device bistable differential (not shown) capable of being actuated by the trigger 1.
  • the trigger 1 comprises an actuating device 119 which includes a pusher 114 inserted in a through hole 115 made in the upper wall 75 of the cover 4, in line with the body 22 of the pallet.
  • the pusher 114 comprises an upper end portion 116 projecting from the upper wall 75 towards the outside and capable of cooperating with the device differential protection, and a lower end 117 projecting from this wall 75 inwards, and the end of which forms or carries a head 118 hemispherical capable of cooperating with the pallet body 22.
  • trigger 1 The operation of trigger 1 is briefly described.
  • Pallet 7 is assumed to be in its engaged position, the pusher 114 being in a so-called depressed position where the head 118, which is bearing against the pallet body 22, is at a distance from the wall 75 ( Figures 2, 3).
  • the pusher 114 Under the action of an external mechanical stress applied to the upper end part 116, and directed from top to bottom, the pusher 114 returns to its depressed position by forcing the pallet 7 to occupy its position engaged.
  • the elevation position of the pusher 114 depends on the positioning in elevation of the reinforcements 6, 7, that is to say, taking into account the fact that the pallet 7 is caught between the pusher 114 and the fixed frame 6, of the positioning of the fixed frame 6 relative to the housing 2. This positioning being precise, as we saw above, the precision of the positioning of the pusher 114 relative to the housing 2 is therefore ensured.
  • the carcass 12 includes a lower flange 91 and an upper flange 92 framing the winding 13, connected by a hollow core 93 threaded on the front branch 8, and having a through hole 94 whose shape is complementary to it.
  • the carcass 12 further comprises a foot 95 of rectangular section which projection of the lower flange 91, down.
  • Carcass 12 is assembled at base 3 by pressing his foot 95 into the hole 66.
  • the dimensions relative of foot 95 and hole 66 are chosen so that, once pressed into the hole 94, the foot 95 is mounted tightly in the latter, so that the carcass 12, once assembled, be held firmly in a position predetermined fixed.
  • the winding 13 can be directly connected to an electrical circuit (not shown) such as an electronic card, however, according to a preferred mode of embodiment, the foot 95 has two through holes 96 in each of which is inserted a metallic pin 97 having a projecting lower part 98 intended to be connected to the electrical circuit, as well as an upper part 99 protruding intended to be associated with the winding wire 13, for example by welding.
  • an electrical circuit such as an electronic card
  • the foot 95 has two through holes 96 in each of which is inserted a metallic pin 97 having a projecting lower part 98 intended to be connected to the electrical circuit, as well as an upper part 99 protruding intended to be associated with the winding wire 13, for example by welding.
  • the pin 97 Before its assembly to the carcass 12, the pin 97 has substantially the shape of a J, its lower part 98 being of higher transverse dimension to that of its upper part 99 (FIG. 25).
  • Each pin 97 presents near its center, that is to say at the junction between its lower 98 and upper 99 parts, a step 100 forming a stop which, when the pin 97 is inserted into the hole 96 corresponding in the foot 95, is applied against a bearing surface 101 transverse formed in the hole 96.
  • the upper part 99 In order to immobilize the pin 97 in the foot 95 to make it integral with the carcass 12, its upper part 99 is folded in a Z towards the front.
  • the upper part 99 has, at a certain distance from the recess 100, a narrowing 102 which, when the upper part 99 is folded, forms the central branch of the Z and is housed in a complementary notch 103 made in the upper surface of the lower flange 91, and adjacent to the hole 96.
  • the pin 97 is thus immobilized in translation in the direction elevation.
  • the front branch 8 of the fixed frame 6 has a front face 104 and a rear face 105 opposite, connected by two lateral faces 106, 107.
  • the hole crossing 94 of the core 93 of the carcass 12 also has a front face 108 and a rear face 109 opposite, connected by two lateral faces 110, 111.
  • Each set J1, J2, J3, J4 is here predetermined by the chain of odds shorter directly connecting the junction surfaces of the fixed frame 6, the base 3 and of the carcass 12, starting from a terminal surface formed by a face 104, 105, 106, 107 of the front branch 8 delimiting said clearance, to result in the face 108, 109, 110, 111 of the hole 94 opposite, forming another surface terminal delimiting the same set J1, J2, J3, J4.
  • the elevation dimension or height of the carcass 12, measured between the faces not facing the flanges, that is to say a face lower 112 of the lower flange 91 and an upper face 113 of the flange greater 92, is chosen less than the elevation dimension or height of the front leg 8, that is to say the distance separating the upper face 15 from the base 10 of the polarization surface 20.
  • the foot 95 is pressed into the hole 66 at a predetermined depth, such as, on the one hand, the branch front 8 protrudes from the upper flange 92, the free end 20 of the front branch 8 protruding from the upper face 113 of the upper flange 92, and, on the other hand, the lower face 112 of lower flange 91 is spaced from upper face 15 of base 10 so that there is a clearance J5 between them (FIG. 2).
  • the carcass 12 is rigidly mounted relative to the housing, while being mounted floating relative to the fixed frame 6, that is to say spaced of it at any point.
  • the fixed frame 6 is thus preserved from stresses and deformations to which the carcass 12 is subjected, in particular during the mounting pins 97 on the aforementioned electrical circuit.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Control Of Position Or Direction (AREA)
  • Braking Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Casings For Electric Apparatus (AREA)
  • Near-Field Transmission Systems (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

The electromagnetic circuit breaker has an electromagnetic circuit (5) with a fixed armature (6) and moving armature (7). The armature can take up two stable positions. The moving armature can occupy a third stable equilibrium position away from the stable rest position.

Description

L'invention concerne un déclencheur électromagnétique comportant un circuit électromagnétique comprenant une armature fixe ainsi qu'une armature mobile susceptible d'occuper deux positions d'équilibre stable, à savoir une position de travail dans laquelle elle se trouve plaquée contre l'armature fixe et ferme le circuit électromagnétique, et une position de repos dans laquelle elle est écartée de l'armature fixe et ouvre le circuit électromagnétique.The invention relates to an electromagnetic trip device comprising a electromagnetic circuit comprising a fixed armature as well as an armature mobile capable of occupying two positions of stable equilibrium, namely a working position in which it is pressed against the fixed frame and closes the electromagnetic circuit, and a rest position in which it is away from the fixed armature and opens the electromagnetic circuit.

Un déclencheur électromagnétique de ce type est connu du document FR-A-2 620 264.An electromagnetic trip device of this type is known from the document FR-A-2 620 264.

Ce type de déclencheur présente un certain nombre d'inconvénients, parmi lesquels un accès difficile à l'entrefer entre les armatures une fois celles-ci assemblées. Or il peut y subsister des poussières indésirables qui sont susceptibles de modifier l'entrefer et, de ce fait, grever le bon fonctionnement du déclencheur.This type of trigger has a number of drawbacks, among which difficult access to the air gap between the reinforcements once these assemblies. However, there may remain undesirable dust which is likely to modify the air gap and, therefore, affect the proper functioning of the trigger.

L'invention vise à résoudre notamment les inconvénients précités en proposant un déclencheur électromagnétique de conception simple, qui présente un fonctionnement fiable, précis et durable.The invention aims to solve in particular the aforementioned drawbacks in providing a simple design electromagnetic trip unit which reliable, precise and durable operation.

A cet effet, l'invention propose un déclencheur électromagnétique tel que mentionné dans l'introduction, caractérisé en ce que l'armature mobile est apte à occuper une troisième position d'équilibre stable dans laquelle elle est écartée de l'armature fixe au-delà de la position de repos.To this end, the invention provides an electromagnetic trigger such as mentioned in the introduction, characterized in that the movable frame is suitable for occupy a third stable equilibrium position in which it is spread of the fixed frame beyond the rest position.

Il est ainsi possible d'accéder librement à l'entrefer entre les armatures même après leur assemblage. Il peut alors être procédé au nettoyage du déclencheur, notamment des armatures, sans qu'il soit nécessaire de démonter celles-ci.It is thus possible to freely access the air gap between the reinforcements even after they are assembled. The cleaning of the trigger, including armatures, without the need to disassemble them.

L'entrefer est de la sorte définitivement débarrassé de toute poussière indésirable et il reste constant de manière durable.The air gap is thus definitively free of all dust undesirable and it remains constant in a lasting manner.

La fiabilité, la précision, la rapidité et la durée de vie du déclencheur s'en trouvent accrues.The reliability, precision, speed and service life of the trip unit find increased.

Le déclencheur électromagnétique selon l'invention présente d'autres caractéristiques préférentielles, non limitatives, seules ou combinées, telles que :

  • il comprend une plaquette fixée à l'armature fixe et par rapport à laquelle est montée pivotante l'armature mobile ;
  • ladite armature mobile est sollicitée vers sa position de repos par un ressort de rappel ancré d'une part dans ladite armature mobile, et d'autre part sur ladite plaquette ;
  • ladite plaquette comporte une surface d'appui contre laquelle est susceptible de s'appliquer, sous l'action du ressort de rappel, une partie biseautée de l'armature mobile, ladite partie biseautée formant un axe de pivotement de l'armature mobile.
The electromagnetic trip device according to the invention has other preferential, non-limiting characteristics, alone or in combination, such as:
  • it includes a plate fixed to the fixed frame and relative to which the movable frame is pivotally mounted;
  • said movable frame is biased towards its rest position by a return spring anchored on the one hand in said movable frame, and on the other hand on said wafer;
  • said plate has a bearing surface against which is likely to be applied, under the action of the return spring, a beveled part of the movable frame, said beveled part forming a pivot axis of the movable frame.

Selon d'autres caractéristiques :

  • la plaquette comporte un logement situé à distance de l'armature fixe, susceptible de recevoir l'armature mobile dans sa troisième position d'équilibre stable ;
  • dans sa troisième position de repos, l'armature mobile se trouve maintenue dans ledit logement sous l'action du ressort de rappel ;
  • l'armature mobile présente une butée venant s'appliquer, sous l'action du ressort de rappel, contre une surface d'appui dudit logement, ladite butée étant distincte de ladite partie biseautée ;
  • l'armature mobile présente un trou traversant pour l'ancrage du ressort, et en ce qu'il existe un porte-à-faux entre ce trou et ladite butée.
According to other characteristics:
  • the plate includes a housing located at a distance from the fixed frame, capable of receiving the movable frame in its third position of stable equilibrium;
  • in its third rest position, the movable frame is held in said housing under the action of the return spring;
  • the movable frame has a stop coming to bear, under the action of the return spring, against a bearing surface of said housing, said stop being distinct from said bevelled part;
  • the movable frame has a through hole for anchoring the spring, and in that there is a cantilever between this hole and said stop.

L'armature mobile se trouve ainsi positionnée de manière stable et précise, et en même temps de manière aisément réversible, dans sa troisième position.The movable armature is thus positioned stably and precise, and at the same time easily reversible, in its third position.

Selon d'autres caractéristiques encore :

  • ladite plaquette comporte une patte qui dépasse de l'armature et présente une surface formant ladite surface d'appui contre laquelle est susceptible de s'appliquer ladite partie biseautée de l'armature mobile, cette patte étant prolongée, au-delà de l'armature par une extension coudée en forme de crochet qui forme ledit logement ;
  • la plaquette comporte deux pattes semblables qui encadrent l'armature mobile dont une partie, dans laquelle est ancré le ressort, se trouve, en étant libre de se mouvoir, entre les pattes ;
  • l'armature mobile se présente sous la forme d'une palette ;
  • l'armature fixe est en forme de U, et comporte une première et une deuxième branches reliées par une base, ladite plaquette étant fixée à ladite deuxième branche ;
  • le déclencheur comporte un boítier dans lequel est disposé le circuit électromagnétique, ledit boítier comportant un socle coiffé d'un couvercle, socle sur lequel repose l'armature fixe ;
  • l'armature fixe est assujettie audit boítier, sa base se trouvant immobilisée, serrée, entre le socle et le couvercle.
According to still other characteristics:
  • said plate has a tab which protrudes from the frame and has a surface forming said bearing surface against which is likely to apply said bevelled part of the movable frame, this tab being extended, beyond the frame by a bent hook-shaped extension which forms said housing;
  • the plate has two similar legs which frame the movable frame of which a part, in which the spring is anchored, is, being free to move, between the legs;
  • the movable frame is in the form of a pallet;
  • the fixed frame is U-shaped, and comprises first and second branches connected by a base, said plate being fixed to said second branch;
  • the trigger comprises a housing in which the electromagnetic circuit is disposed, said housing comprising a base capped with a cover, base on which the fixed frame rests;
  • the fixed frame is subject to said housing, its base being immobilized, clamped, between the base and the cover.

D'autres caractéristiques et avantages de l'invention apparaítront à la lumière de la description qui va suivre d'un mode de réalisation donné à titre d'exemple non limitatif, description faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'un déclencheur électromagnétique conforme à l'invention ;
  • la figure 2 est une vue en coupe d'élévation longitudinale suivant le plan de coupe II-II de la figure 1 ;
  • la figure 3 est une vue en coupe d'élévation transversale partiellement selon la ligne Illa - Illa, et partiellement selon la ligne Illb - IIIb de la figure 2 ;
  • la figure 4 est une vue d'élévation en plan du déclencheur électromagnétique des figures précédentes, sans son couvercle, représenté dans une première position d'équilibre stable de l'armature mobile ;
  • la figure 5 est une vue analogue à la figure 4, dans une deuxième position d'équilibre stable de l'armature mobile ;
  • la figure 6 est une vue similaire aux figures 4 et 5, dans une troisième position d'équilibre stable de l'armature mobile ;
  • la figure 7 est une vue en plan de dessus du déclencheur électromagnétique de la figure 6 ;
  • la figure 8 est une vue en coupe d'élévation longitudinale selon la ligne VIII - VIII de la figure 7 ;
  • la figure 9 est une vue en perspective du déclencheur électromagnétique des figures précédentes, dépourvu de son socle et de son couvercle ainsi que du bobinage de la bobine, dans la position de la figure 4 ;
  • la figure 10 est une vue en perspective du déclencheur électromagnétique de la figure 9, selon un autre angle de vue ;
  • la figure 11 est une vue en plan de dessus de l'armature mobile d'un déclencheur selon l'invention ;
  • la figure 12 est une vue en plan d'élévation longitudinale de l'armature mobile de la figure 11 ;
  • la figure 13 est une vue en perspective d'une pièce de guidage de l'armature mobile d'un déclencheur électromagnétique selon l'invention ;
  • la figure 14 est une vue en plan d'élévation longitudinale de la pièce de guidage de la figure 13 ;
  • la figure 15 est une vue en plan de dessus de la pièce de guidage de la figure 13 ;
  • la figure 16 est une vue en plan d'élévation longitudinale de l'armature fixe d'un déclencheur électromagnétique selon l'invention ;
  • la figure 17 est une vue en plan d'élévation transversale de l'armature fixe de la figure 16 ;
  • la figure 18 est une vue en perspective du socle du déclencheur électromagnétique des figures 1 à 8 ;
  • la figure 19 est une vue en plan de dessus du socle de la figure 18 ;
  • la figure 20 est une vue en coupe d'élévation longitudinale du socle des figures 18 et 19, selon la ligne XX - XX de la figure 19 ;
  • la figure 21 est une vue en coupe d'élévation longitudinale du couvercle du déclencheur électromagnétique de la figure 2, représenté seul ;
  • la figure 22 est une vue en plan d'élévation longitudinale de la carcasse de la bobine d'un déclencheur électromagnétique selon l'invention ;
  • la figure 23 est une vue en plan de dessous de la carcasse de la figure 22 ;
  • la figure 24 est une vue en coupe d'élévation longitudinale de la bobine du déclencheur électromagnétique des figures 1 à 8, selon la ligne XXIV - XXIV de la figure 7 ;
  • la figure 25 est une vue en plan d'un picot entrant dans la réalisation de la bobine de la figure 24.
Other characteristics and advantages of the invention will appear in the light of the following description of an embodiment given by way of non-limiting example, description made with reference to the accompanying drawings in which:
  • Figure 1 is a perspective view of an electromagnetic trip device according to the invention;
  • Figure 2 is a sectional view of longitudinal elevation along the section plane II-II of Figure 1;
  • Figure 3 is a cross-sectional elevation view partially along the line Illa - Illa, and partially along the line Illb - IIIb of Figure 2;
  • Figure 4 is an elevational plan view of the electromagnetic trip device of the previous figures, without its cover, shown in a first stable equilibrium position of the movable frame;
  • Figure 5 is a view similar to Figure 4, in a second stable equilibrium position of the movable frame;
  • Figure 6 is a view similar to Figures 4 and 5, in a third stable equilibrium position of the movable frame;
  • Figure 7 is a top plan view of the electromagnetic trip device of Figure 6;
  • Figure 8 is a sectional view of longitudinal elevation along the line VIII - VIII of Figure 7;
  • Figure 9 is a perspective view of the electromagnetic trip device of the previous figures, devoid of its base and its cover as well as the coil winding, in the position of Figure 4;
  • Figure 10 is a perspective view of the electromagnetic trigger of Figure 9, from another angle of view;
  • Figure 11 is a top plan view of the movable frame of a trip device according to the invention;
  • Figure 12 is a longitudinal elevation plan view of the movable frame of Figure 11;
  • Figure 13 is a perspective view of a guide piece of the movable frame of an electromagnetic trip device according to the invention;
  • Figure 14 is a longitudinal elevation plan view of the guide member of Figure 13;
  • Figure 15 is a top plan view of the guide member of Figure 13;
  • Figure 16 is a longitudinal elevation plan view of the fixed frame of an electromagnetic trip device according to the invention;
  • Figure 17 is a transverse elevation plan view of the fixed frame of Figure 16;
  • Figure 18 is a perspective view of the base of the electromagnetic trip device of Figures 1 to 8;
  • Figure 19 is a top plan view of the base of Figure 18;
  • Figure 20 is a sectional view of longitudinal elevation of the base of Figures 18 and 19, along the line XX - XX of Figure 19;
  • Figure 21 is a sectional view in longitudinal elevation of the cover of the electromagnetic trip device of Figure 2, shown alone;
  • Figure 22 is a longitudinal elevation plan view of the coil carcass of an electromagnetic trip device according to the invention;
  • Figure 23 is a bottom plan view of the carcass of Figure 22;
  • Figure 24 is a sectional view of longitudinal elevation of the coil of the electromagnetic trip device of Figures 1 to 8, along the line XXIV - XXIV of Figure 7;
  • FIG. 25 is a plan view of a pin used in the production of the coil of FIG. 24.

Sur les figures 1 à 3 est représenté un déclencheur électromagnétique 1 à haute sensibilité pour un interrupteur ou un disjoncteur, qui comprend, dans un boítier 2 supposé fixe, composé d'un socle 3 coiffé d'un couvercle 4, un circuit électromagnétique 5 comprenant une armature fixe 6 en forme de U, assujettie au boítier 2 ainsi qu'une armature mobile 7 appelée palette, susceptible de pivoter pour ouvrir ou fermer le circuit électromagnétique 5.In Figures 1 to 3 is shown an electromagnetic trip device 1 to high sensitivity for a switch or circuit breaker, which includes, in a case 2 assumed to be fixed, composed of a base 3 capped with a cover 4, a circuit electromagnetic 5 comprising a fixed frame 6 in the shape of a U, secured the housing 2 and a movable frame 7 called a pallet, capable of rotate to open or close the electromagnetic circuit 5.

Sur les figures 1 à 3 est également représenté un repère constitué par trois directions orthogonales, à savoir :

  • une direction L longitudinale orientée depuis une localisation dite arrière vers une localisation opposée dite avant ;
  • une direction T transversale ; et
  • une direction E d'élévation, orientée depuis une localisation dite « basse » ou « inférieure » vers une localisation opposée dite « haute » ou supérieure.
In FIGS. 1 to 3 is also shown a reference constituted by three orthogonal directions, namely:
  • a longitudinal direction L oriented from a so-called rear location to an opposite location called before;
  • a transverse direction T; and
  • a direction E of elevation, oriented from a location called "low" or "lower" to an opposite location called "high" or higher.

Pour des raisons de commodité, le déclencheur 1 est décrit par rapport à ce repère, suivant l'orientation adoptée à la figure 2, qui correspond à l'usage le plus courant du déclencheur 1.For convenience, trigger 1 is described with reference to this mark, according to the orientation adopted in FIG. 2, which corresponds to the usual use most common of trigger 1.

Dans tout ce qui suit, les termes « avant », « arrière », « bas », « haut », « inférieur », « supérieur » sont employés en référence aux directions qui viennent d'être définies.In all that follows, the terms "front", "rear", "bottom", "top", "Lower", "upper" are used with reference to the directions which have just been defined.

L'armature fixe 6 et la palette 7 sont réalisées toutes deux dans un matériau ferromagnétique, tel qu'un alliage Fer - Nickel.The fixed frame 6 and the pallet 7 are both produced in a ferromagnetic material, such as an Iron - Nickel alloy.

L'armature fixe 6 comprend une première branche 8 dite avant et une deuxième branche 9 dite arrière, reliées par une base 10 reposant sur le socle 3 du boítier 2.The fixed frame 6 comprises a first branch 8 called front and a second branch 9 called rear, connected by a base 10 resting on the base 3 case 2.

Le circuit électromagnétique 5 comporte une bobine 11 comprenant une carcasse 12 sur laquelle est enroulé un bobinage 13, la carcasse 12 étant enfilée sur la branche avant 8 de l'armature fixe 6 et solidaire du socle 3.The electromagnetic circuit 5 comprises a coil 11 comprising a carcass 12 on which a coil 13 is wound, the carcass 12 being threaded on the front branch 8 of the fixed frame 6 and secured to the base 3.

Entre les branches 8, 9 est intercalé un aimant permanent 14 pour la polarisation magnétique de l'armature fixe 6. L'aimant 14, de forme parallélépipédique, est fixé par l'une de ses extrémités sur la base 10 de l'armature fixe 6, de préférence par soudage. Plus précisément, l'aimant 14 est fixé sur une face supérieure 15 de la base 10, qui présente également une face inférieure 16 opposée. Between the branches 8, 9 is interposed a permanent magnet 14 for the magnetic polarization of the fixed armature 6. The magnet 14, shaped parallelepiped, is fixed by one of its ends on the base 10 of the fixed armature 6, preferably by welding. More specifically, the magnet 14 is fixed on an upper face 15 of the base 10, which also has a face lower 16 opposite.

La palette 7 est susceptible d'occuper au moins deux positions d'équilibre stable, à savoir une position de travail ou enclenchée, dans laquelle elle se trouve plaquée contre les branches 8, 9 de l'armature fixe 6 et ferme le circuit électromagnétique 5, et une position de repos ou déclenchée, dans laquelle elle est écartée de l'armature fixe 6 et ouvre le circuit électromagnétique 5.Pallet 7 is likely to occupy at least two equilibrium positions stable, i.e. a working or engaged position, in which it found pressed against the branches 8, 9 of the fixed armature 6 and closes the circuit electromagnetic 5, and a rest or triggered position, in which it is moved away from the fixed armature 6 and opens the electromagnetic circuit 5.

La palette 7 est sollicitée vers sa position déclenchée par un ressort 17 de rappel fonctionnant en traction.Pallet 7 is biased towards its position triggered by a spring 17 of recall operating in traction.

Lorsque la bobine 11 n'est pas excitée, la palette 7 est maintenue en position enclenchée à l'encontre de son ressort de rappel 17 par la force d'attraction de l'aimant permanent 14.When the coil 11 is not energized, the pallet 7 is maintained in position engaged against its return spring 17 by force permanent magnet 14.

L'excitation de la bobine 11 libère la palette 7 de l'action de l'aimant 14, celle-ci pivotant alors vers sa position déclenchée, sous l'action du ressort de rappel 17.The excitation of the coil 11 releases the pallet 7 from the action of the magnet 14, the latter then pivoting towards its triggered position, under the action of the spring of reminder 17.

La palette 7 présente deux faces planes parallèles opposées, à savoir une face supérieure 18 et une face inférieure 19.Pallet 7 has two opposite parallel flat faces, namely a upper face 18 and a lower face 19.

Les extrémités libres 20, 21 respectives des branches avant 8 et arrière 9 forment des surfaces de polarisation situées sensiblement dans un même plan de polarisation P, avec lesquelles coopère en position enclenchée la face inférieure 19 de la palette 7.The free ends 20, 21 respectively of the front 8 and rear 9 branches form polarization surfaces located substantially in the same plane polarization P, with which the face cooperates in the engaged position lower 19 of pallet 7.

La palette 7 a la forme d'un trident et comporte un corps 22 de forme rectangulaire dont saillent deux ailes latérales 23, 24 coudées vers l'arrière, et dont les bords arrière 25 sont biseautés pour former des couteaux 26 pour l'articulation de la palette 7.Pallet 7 has the shape of a trident and has a body 22 of shape rectangular of which project two lateral wings 23, 24 bent backwards, and whose rear edges 25 are bevelled to form knives 26 for the articulation of the pallet 7.

Chaque couteau 26 présente une face inclinée 27 tournée vers le haut, terminée vers le bas par une arête 28 située sensiblement dans le plan de la face inférieure 19 de la palette 7. Les arêtes 28 forment ensemble un axe A de pivotement de la palette 7.Each knife 26 has an inclined face 27 facing upwards, terminated downwards by an edge 28 situated substantially in the plane of the lower face 19 of the pallet 7. The edges 28 together form an axis A of pivoting of the pallet 7.

Sur la branche arrière 9, qui présente une face avant 29 et une face arrière 30 opposées, est fixée par encliquetage ou par tout autre moyen équivalent une plaquette 31 assurant le guidage de la palette 7, cette dernière étant montée pivotante par rapport à la plaquette 31.On the rear branch 9, which has a front face 29 and a face rear 30 opposite, is fixed by snap-fastening or by any other means equivalent to a plate 31 guiding the pallet 7, the latter being pivotally mounted relative to the plate 31.

Cette plaquette 31 est une pièce monobloc réalisée par exemple dans un matériau métallique à des fins de rigidité. Elle comporte un corps 32 plaqué contre la face arrière 30 de la branche arrière 9, qu'il recouvre sensiblement. Ce corps 32 est prolongé vers le haut, sous la forme d'une fourche, par deux pattes supérieures 33, 34 semblables qui dépassent de l'armature fixe 6 en saillant du plan de polarisation P, disposées en regard des ailes 23, 24 de la palette 7, et contre lesquelles viennent s'appliquer les couteaux 26.This plate 31 is a single piece produced for example in a metallic material for stiffness. It has a plated body 32 against the rear face 30 of the rear branch 9, which it substantially covers. This body 32 is extended upward, in the form of a fork, by two legs upper 33, 34 similar which protrude from the fixed frame 6 projecting from the plane of polarization P, arranged opposite the wings 23, 24 of the pallet 7, and against which the knives are applied 26.

Plus précisément, chaque patte 33, 34 présente une face avant 35 d'appui contre laquelle vient s'appliquer, sous l'action du ressort de rappel 17, l'arête 28 du couteau, 26 en position enclenchée (figure 4).More specifically, each tab 33, 34 has a front face 35 support against which is applied, under the action of the return spring 17, the edge 28 of the knife, 26 in the engaged position (Figure 4).

En position déclenchée, la palette 7 est en contact linéaire, par son corps 22, avec la branche arrière 9, la face inférieure 19 de la palette 7 étant en appui sur un bord arrière 36 de l'extrémité libre 21 de la branche arrière 9 (figure 5).In the triggered position, the pallet 7 is in linear contact, through its body 22, with the rear branch 9, the lower face 19 of the pallet 7 being in abutment on a rear edge 36 of the free end 21 of the rear branch 9 (Figure 5).

Par ailleurs, la palette 7 présente, au niveau de ses ailes 23, 24, une extension transversale supérieure à celle de la branche arrière 9, les couteaux 26 étant en permanence écartés latéralement de celle-ci.Furthermore, the pallet 7 has, at its wings 23, 24, a transverse extension greater than that of the rear branch 9, the knives 26 being permanently separated laterally therefrom.

Les couteaux 26 n'étant jamais en contact avec la branche arrière 9, ils ne produisent, lors d'une usure éventuelle, aucune particule susceptible de se déposer sur la surface de polarisation 20, 21.The knives 26 never being in contact with the rear branch 9, they do not produce, during possible wear, no particles liable to deposit on the polarization surface 20, 21.

Il en résulte que l'entrefer entre la palette 7 et l'armature fixe 6 est maintenu sensiblement constant. L'efficacité, la rapidité et la durée de vie du déclencheur 1 s'en trouvent accrues.It follows that the air gap between the pallet 7 and the fixed frame 6 is kept substantially constant. The efficiency, speed and lifespan of the trigger 1 are increased.

La palette 7 présente vers l'arrière une queue 37 qui se prolonge au-delà des ailes 23, 24 en dépassant de celles-ci, qui se trouve, en étant libre de se mouvoir, entre les pattes 33, 34 de la plaquette 31, et dans laquelle est ancrée l'une des extrémités, supérieure 38, du ressort de rappel 17.Pallet 7 has a tail 37 towards the rear which extends beyond wings 23, 24 projecting from them, which is, being free to move, between the legs 33, 34 of the plate 31, and in which is anchored one of the upper 38 ends of the return spring 17.

Cette extrémité supérieure 38 du ressort de rappel 17 forme une boucle insérée dans un trou traversant 39 pratiqué dans la queue 37, au-delà des arêtes 28 vers l'arrière, de sorte à former un porte-à-faux permettant le pivotement de la palette 7, sous l'action du ressort 17, autour de l'axe A formé par ses arêtes 28.This upper end 38 of the return spring 17 forms a loop inserted in a through hole 39 made in the tail 37, beyond the edges 28 towards the rear, so as to form a cantilever allowing the pivoting of the pallet 7, under the action of the spring 17, around the axis A formed by its edges 28.

La plaquette 31 se termine vers le bas par une patte inférieure 40 repliée vers l'arrière, dans laquelle est ancrée l'autre extrémité, inférieure 41, du ressort de rappel 17. The plate 31 ends down with a folded lower tab 40 backwards, in which the other lower end 41 of the spring is anchored recall 17.

Les pattes supérieures 33, 34 sont prolongées chacune, vers le haut, par une extension coudée 42 formant un crochet définissant un logement 43 susceptible de recevoir la palette 7.The upper legs 33, 34 are each extended, upwards, by a bent extension 42 forming a hook defining a housing 43 likely to receive the pallet 7.

Le crochet 42 comporte, vers l'arrière, un fond 44 incliné relié à la patte 33, 34 par une partie 45 repliée vers l'arrière en équerre par rapport à la patte 33, 34, et, vers le haut, un retour 46 replié en équerre vers l'avant par rapport au fond 44.The hook 42 comprises, towards the rear, an inclined bottom 44 connected to the tab 33, 34 by a part 45 folded back at right angles to the tab 33, 34, and, upwards, a return 46 folded at right angles to the front relative to the background 44.

Le fond 44 présente une surface d'appui 47 tournée vers l'avant et vers le haut, tandis que le retour 46 présente une surface d'appui 48 tournée vers l'armature fixe 6, c'est-à-dire vers l'avant et vers le bas.The bottom 44 has a bearing surface 47 facing forward and towards the top, while the return 46 has a bearing surface 48 facing the fixed armature 6, that is to say towards the front and down.

La palette 7 est susceptible d'occuper une troisième position d'équilibre stable, dite levée, dans laquelle elle est inclinée et se trouve écartée de l'armature fixe 6 au-delà de la position de repos, et dans laquelle elle coopère avec le crochet 42 en étant reçue dans le logement 43 (figures 6, 7, 8).Pallet 7 is likely to occupy a third position of equilibrium stable, called lifted, in which it is inclined and is separated from the fixed armature 6 beyond the rest position, and in which it cooperates with the hook 42 being received in the housing 43 (Figures 6, 7, 8).

La queue 37 de la palette 7 présente, vers l'arrière, une partie extrême 49 d'extension transversale réduite délimitée vers l'avant par deux décrochements latéraux 50, 51 formant des butées.The tail 37 of the pallet 7 has, towards the rear, an end portion 49 reduced transverse extension delimited forwards by two recesses lateral 50, 51 forming stops.

En position levée de la palette 7, ces butées 51, 52 viennent s'appliquer contre la surface d'appui 47 du fond 44 du crochet 42 avec la partie extrême 49 insérée entre les fonds 44 des crochets 42 en regard, tandis que la face supérieure 18 de la palette 7 vient s'appliquer contre la surface d'appui 48 du retour 46 du crochet 42.In the raised position of the pallet 7, these stops 51, 52 are applied against the bearing surface 47 of the bottom 44 of the hook 42 with the end part 49 inserted between the bottoms 44 of the hooks 42 facing each other, while the face upper 18 of the pallet 7 is applied against the bearing surface 48 of the return 46 of hook 42.

Dans cette position levée, la palette 7 se trouve espacée de chacune des branches 8, 9 de l'armature fixe 6, tel qu'il apparaít sur les figures 6 et 8.In this raised position, the pallet 7 is spaced from each of the branches 8, 9 of the fixed frame 6, as it appears in Figures 6 and 8.

La palette 7 peut être déplacée vers sa position levée depuis sa position déclenchée sous l'action, par exemple, d'un dispositif automatisé de préhension (non représenté), qui vient saisir la palette 7 en position déclenchée puis, tirant sur le ressort, place la palette 7 dans la position levée en coopération avec le logement 43.Pallet 7 can be moved to its raised position from its position triggered by the action, for example, of an automated gripping device (not shown), which comes to grip the pallet 7 in the triggered position then, pulling on the spring, place the pallet 7 in the raised position in cooperation with the housing 43.

Inversement, la palette 7 peut être rétablie en position déclenchée - ou directement en position enclenchée - à partir de la position levée, par le même dispositif automatisé de préhension, qui, venant saisir la palette 7, l'éloigne du logement 43 en tirant sur le ressort 17 pour la déposer ensuite sur l'armature fixe 6.Conversely, the pallet 7 can be restored to the triggered position - or directly in the engaged position - from the raised position, by the same automated gripping device, which, coming to grip the pallet 7, moves it away from the housing 43 by pulling on spring 17 and then depositing it on the fixed frame 6.

Il existe un porte-à-faux entre les butées 50, 51 et le bord arrière du trou 39, contre lequel prend appui le ressort de rappel 17, de sorte que l'action de celui-ci suffit à maintenir la palette 7 en équilibre stable dans sa position levée.There is a cantilever between the stops 50, 51 and the rear edge of the hole 39, against which the return spring 17 is supported, so that the action of this is enough to keep the pallet 7 in stable equilibrium in its raised position.

D'ailleurs, afin d'accroítre la stabilité de cet équilibre, le ressort 17 est légèrement incliné vers l'arrière, depuis le haut vers le bas.Moreover, in order to increase the stability of this balance, the spring 17 is slightly tilted back, from top to bottom.

Dans cette position, il est possible d'accéder au circuit électromagnétique pour procéder à son nettoyage afin de le débarrasser, particulièrement au niveau des surfaces polaires 20, 21 des branches 8, 9 et de la face inférieure 19 de la palette 7, de toute impureté susceptible d'enrayer le bon fonctionnement ultérieur du déclencheur 1, notamment en modifiant l'entrefer entre la palette 7 et l'armature fixe 6.In this position, it is possible to access the electromagnetic circuit to clean it in order to rid it, especially at the level polar surfaces 20, 21 of branches 8, 9 and of the underside 19 of the pallet 7, of any impurity likely to prevent the proper functioning subsequent of trigger 1, in particular by modifying the air gap between pallet 7 and the fixed frame 6.

Ce nettoyage, qui a lieu notamment au montage du déclencheur 1, peut être réalisé par ultrasons, par aspersion, notamment par aspersion cryogénique telle qu'un jet de dioxyde de carbone, ou par tout autre procédé équivalent connu de l'homme du métier.This cleaning, which takes place in particular when the trigger 1 is mounted, can be performed by ultrasound, by spraying, in particular by cryogenic spraying such as a jet of carbon dioxide, or by any other known equivalent process of the skilled person.

Il est à noter que, dans cette position levée, les couteaux 26 sont libres, espacés des crochets 42, et préservés de tout choc susceptible de les endommager (figure 6).It should be noted that, in this raised position, the knives 26 are free, spaced from the hooks 42, and protected from any shock likely to damage (Figure 6).

Les parties 45 des crochets 42 repliées vers l'arrière présentent chacune un décrochement 52 vers l'intérieur, que contourne la palette 7 pendant son passage depuis la position déclenchée vers la position levée, avant de venir se plaquer contre le fond 44 du crochet 42.The parts 45 of the hooks 42 folded backwards each have a recess 52 inwards, which the pallet 7 bypasses during its passage from the triggered position to the raised position, before coming press against the bottom 44 of the hook 42.

Par ailleurs, afin de réaliser la fixation de la plaquette 31 à la branche arrière 9, la plaquette 31 comporte, dans sa partie inférieure, des moyens d'encliquetage intégrés sous la forme de deux bras 54, 55 saillant du corps 32 dans sa partie inférieure, venus de matière avec lui et repliés en équerre vers l'avant, et qui encadrent la branche arrière 9 à proximité de la base 10 de l'armature fixe 6.Furthermore, in order to achieve the attachment of the plate 31 to the branch rear 9, the plate 31 has, in its lower part, means latching integrated in the form of two arms 54, 55 projecting from the body 32 in its lower part, made of material with it and folded at right angles to the front, and which surround the rear branch 9 near the base 10 of the fixed frame 6.

Afin d'assurer l'immobilisation de la plaquette 31 en élévation, les bras 54, 55 sont disposés entre, d'une part, vers le haut, deux oreilles 56, 57 saillant transversalement de la branche arrière 9 environ à mi-hauteur de celle-ci, et d'autre part, vers le bas, la base 10 de l'armature fixe 6.In order to immobilize the plate 31 in elevation, the arms 54, 55 are arranged between, on the one hand, upwards, two ears 56, 57 projecting transversely of the rear branch 9 approximately halfway up the latter, and on the other hand, towards the bottom, the base 10 of the fixed frame 6.

Chaque bras 54, 55 présente en outre, sur sa tranche supérieure au voisinage du corps 32, une bosse 53 en saillie vers le haut et qui, sous l'effet de la tension du ressort 17 sur la plaquette 31, se trouve en appui contre une face inférieure de l'oreille correspondante 56, 57 de sorte à rattraper les jeux d'élévation susceptibles d'apparaítre entre la plaquette 31 et l'armature fixe 9.Each arm 54, 55 also has, on its upper edge at vicinity of the body 32, a bump 53 projecting upwards and which, under the effect of the tension of the spring 17 on the plate 31, is in abutment against a face lower of the corresponding ear 56, 57 so as to make up for the clearances elevation likely to appear between the plate 31 and the fixed frame 9.

Les bras 54, 55 sont flexibles de manière élastique, et présentent chacun un bossage 58 saillant vers l'intérieur.The arms 54, 55 are resiliently flexible, and each has a boss 58 projecting inwards.

Dans chaque bras 54, 55 est réalisée, au niveau du bossage 58, une découpe en U ou en V délimitant une dent 59 qui saille du bras 54, 55 vers le corps 32 de la plaquette 31, et présente une surface d'appui 60 tournée vers l'arrière qui regarde le corps 32.In each arm 54, 55 is made, at the level of the boss 58, a U or V cut delimiting a tooth 59 which projects from the arm 54, 55 towards the body 32 of the plate 31, and has a bearing surface 60 facing the rear looking at the body 32.

Compte tenu de la rigidité de la plaquette 31, son encliquetage sur la branche arrière 9 peut être réalisé de manière automatique par une machine spécifique (non représentée), qui, par exemple, écarte préalablement les bras 54, 55 afin de ne pas endommager la branche 9.Given the rigidity of the plate 31, its snap-fastening on the rear branch 9 can be made automatically by a machine specific (not shown), which, for example, beforehand spreads the arms 54, 55 so as not to damage the branch 9.

Afin d'assurer un maintien ferme de la plaquette 31 sur la branche arrière 9, le corps 32 de plaquette présente, en regard et au droit des dents 59, une languette 61 formée par une découpe en V dans le corps 32 de plaquette et qui, en l'absence de sollicitation, est inclinée vers l'avant.To ensure a firm hold of the plate 31 on the rear branch 9, the plate body 32 has, facing and in line with the teeth 59, a tongue 61 formed by a V-shaped cutout in the plate body 32 and which, in the absence of stress, is tilted forward.

La languette 61 présente une certaine élasticité pour que, en position encliquetée, la branche arrière 9 se trouve serrée entre les dents 59 et cette languette 61.The tongue 61 has a certain elasticity so that, in position latched, the rear branch 9 is clamped between the teeth 59 and this tongue 61.

La conformation de la plaquette 31, notamment des bras 54, 55, par rapport à l'armature fixe, est ainsi apte, à elle seule, à permettre la fixation rigide par encliquetage, de la plaquette 31 sur l'armature fixe 6.The conformation of the plate 31, in particular of the arms 54, 55, by compared to the fixed frame, is thus capable, by itself, of allowing rigid fixing by snap-fastening, of the plate 31 on the fixed frame 6.

L'on décrit à présent le montage du déclencheur 1.The mounting of the trigger 1 is now described.

Le socle 3 et le couvercle 4 sont deux pièces monobloc réalisées chacune par moulage d'un matériau synthétique tel que PVC, polypropylène, polyoxyméthylène, ou équivalent. The base 3 and the cover 4 are two monobloc pieces each produced by molding a synthetic material such as PVC, polypropylene, polyoxymethylene, or equivalent.

Le socle 3 comprend une paroi de fond 62 sur laquelle repose le circuit électromagnétique 5, bordée par deux parois latérales 63, 64 en regard, dont saillent des dents 65 vers l'extérieur pour l'encliquetage du couvercle 4.The base 3 comprises a bottom wall 62 on which the circuit rests electromagnetic 5, bordered by two side walls 63, 64 facing each other, of which protruding teeth 65 outwards for the snap-fastening of the cover 4.

Les parois latérales 63, 64 s'étendent vers l'avant au-delà de la paroi de fond 62, et le socle 3 présente, à l'avant, un trou 66 traversant à section rectangulaire, étendu d'une paroi 63 à l'autre 64.The side walls 63, 64 extend forwardly beyond the wall of bottom 62, and the base 3 has, at the front, a hole 66 passing through in section rectangular, extended from one wall 63 to the other 64.

Ce trou 66 est bordé vers l'avant par une traverse 67 formant l'extrémité avant du socle 3, et vers l'arrière par une cloison 68 qui le sépare de la paroi de fond 62.This hole 66 is bordered forwards by a crosspiece 67 forming the end front of the base 3, and towards the rear by a partition 68 which separates it from the wall of background 62.

Le socle 3 présente en outre deux paires identiques de tétons 69, 70 disposées en regard transversalement, à chacune des jonctions entre le socle 3 et les parois latérales 63, 64. Chaque paire comprend un premier 69 et un deuxième 70 tétons saillant vers le haut et vers l'intérieur, à la jonction entre la paroi latérale 63, 64 et la paroi de fond 62.The base 3 also has two identical pairs of nipples 69, 70 arranged transversely opposite, at each of the junctions between the base 3 and the side walls 63, 64. Each pair comprises a first 69 and a second 70 nipples protruding upwards and inwards, at the junction between the side wall 63, 64 and the bottom wall 62.

Le premier téton 69, situé à proximité de la cloison 68, présente des dimensions transversale et d'élévation respectivement supérieure et inférieure à celles du deuxième téton 70.The first stud 69, located near the partition 68, has transverse and elevation dimensions respectively greater than and less than those of the second nipple 70.

Chaque téton 69, 70 est arrondi vers l'intérieur, les tétons 69, 70 délimitant ensemble, au droit de la paroi de fond 62, une zone de réception 71 de la base 10 de l'armature fixe 6.Each nipple 69, 70 is rounded inward, the nipples 69, 70 together delimiting, at the level of the bottom wall 62, a reception area 71 of the base 10 of the fixed frame 6.

La paroi de fond 62 présente, au droit de la zone de réception 71, une zone 72 déformable élastiquement, cette zone 72 étant plus particulièrement apte à s'enfoncer élastiquement vers le bas sous l'effet d'une pression qui lui serait appliquée de haut en bas.The bottom wall 62 has, at the level of the reception area 71, a zone 72 elastically deformable, this zone 72 being more particularly able to sink elastically downwards under the effect of a pressure which would be applied from top to bottom.

Le socle 3 présente, à proximité du centre de cette zone déformable 72, un pion 73 qui saille de la paroi de fond 62 vers le haut et présente une extrémité libre 74 formant une surface d'appui localisée par rapport à la zone déformable 72.The base 3 has, near the center of this deformable zone 72, a pin 73 which projects from the bottom wall 62 upwards and has one end free 74 forming a localized bearing surface relative to the deformable zone 72.

Afin de permettre la déformation élastique de la paroi de fond 62, cette zone 72 est ici inscrite dans un cercle à l'intérieur duquel la paroi de fond 62 présente une section conique à conicité tournée vers le bas, la paroi de fond 62 s'amincissant depuis le bord dudit cercle vers son centre - c'est-à-dire au droit du pion 73. In order to allow the elastic deformation of the bottom wall 62, this zone 72 is here inscribed in a circle inside which the bottom wall 62 has a conical section with a taper facing downwards, the bottom wall 62 tapering from the edge of said circle to its center - that is to say at the right of pawn 73.

Le couvercle 4 est quant à lui une pièce creuse, de forme généralement parallélépipédique, présentant une paroi supérieure 75 bordée par une paroi avant 76, une paroi arrière 77, et deux parois latérales 78, 79 qui définissent ensemble, vers le bas, une ouverture 80 par laquelle le couvercle 4 est destiné à être associé au socle 3.The cover 4 is in turn a hollow part, generally in the form parallelepiped, having an upper wall 75 bordered by a wall front 76, a rear wall 77, and two side walls 78, 79 which define together, downwards, an opening 80 through which the cover 4 is intended to be associated with the base 3.

A proximité de l'ouverture 80, chaque paroi latérale 78, 79 comporte deux pattes 81 jumelées dans chacune desquelles est réalisée une fenêtre 82 destinée à coopérer avec l'une des dents 65 du socle 3 pour réaliser l'encliquetage du couvercle 4.Near the opening 80, each side wall 78, 79 has two legs 81 paired in each of which is made a window 82 intended to cooperate with one of the teeth 65 of the base 3 to produce snap on cover 4.

Afin de favoriser la flexion des pattes 81 et le guidage du couvercle 4 lors de son encliquetage, chaque paroi latérale 78, 79 présente une encoche 83 entre les pattes 81, destinée à coopérer avec un bourrelet 84 complémentaire en saillie vers l'extérieur sur chaque paroi latérale 63, 64 du socle 3.In order to favor the bending of the legs 81 and the guiding of the cover 4 during of its snap-fastening, each side wall 78, 79 has a notch 83 between the legs 81, intended to cooperate with a complementary bead 84 in projecting outwards on each side wall 63, 64 of the base 3.

Chaque paroi latérale 78, 79 du couvercle 4 présente en outre une surface intérieure 85 le long de laquelle court une nervure 86 saillant vers l'intérieur, qui s'étend depuis la paroi supérieure 75 vers l'ouverture 80. Cette nervure 86 présente une partie extrême inférieure 87 saillant de l'encoche 83 vers le bas, terminée par une surface 88 formant butée.Each side wall 78, 79 of the cover 4 also has a inner surface 85 along which runs a rib 86 projecting towards the interior, which extends from the upper wall 75 towards the opening 80. This rib 86 has a lower end portion 87 projecting from the notch 83 downwards, terminated by a surface 88 forming a stop.

Lors du montage du déclencheur 1, l'armature fixe 6 est disposée sur le socle 3, sa base 10 étant placée dans la zone de réception 71, qui lui est complémentaire, en étant insérée entre les tétons 69, 70 qui encadrent la zone déformable 72 et qui, formant des cales, limitent le débattement longitudinal et éventuellement transversal de l'armature fixe 6 , la limitation du débattement transversal pouvant également être réalisée par les parois latérales 63, 64.When mounting the trigger 1, the fixed armature 6 is placed on the base 3, its base 10 being placed in the reception area 71, which is complementary, by being inserted between the nipples 69, 70 which frame the area deformable 72 and which, forming shims, limit the longitudinal travel and possibly transverse of the fixed frame 6, limiting the travel transverse which can also be produced by the side walls 63, 64.

La face inférieure 16 de la base repose sur le pion 73 en étant en contact avec la surface d'appui 74 de celui-ci, qui est de superficie limitée par rapport à celle de la zone déformable 72 afin de concentrer les contraintes.The underside 16 of the base rests on the pin 73 while being in contact with the bearing surface 74 thereof, which is of limited area with respect to that of the deformable zone 72 in order to concentrate the stresses.

L'encliquetage du couvercle 4 sur le socle 3, avec la butée 88 de la nervure 86 regardant la zone déformable 72, provoque, par les dimensions et la conformation du socle 3, du couvercle 4 et de la base 10 de l'armature fixe 6, l'appui de cette butée 88 contre la face supérieure 15 de la base 10 à l'encontre de la sollicitation de la zone déformable 72. The latching of the cover 4 on the base 3, with the stop 88 of the rib 86 looking at the deformable zone 72, causes, by the dimensions and the conformation of the base 3, of the cover 4 and of the base 10 of the fixed frame 6, the support of this stop 88 against the upper face 15 of the base 10 against stress on the deformable zone 72.

La base 10 se trouve alors serrée, maintenue, immobilisée en élévation entre le pion 73 et la nervure 86, la zone déformable 72 sollicitant, sous l'effet de son élasticité propre, la base 10 vers le couvercle 4.The base 10 is then clamped, maintained, immobilized in elevation between the pin 73 and the rib 86, the deformable zone 72 urging, under the effect of its own elasticity, the base 10 towards the cover 4.

Sous l'effet de la pression de la nervure 86 contre la face supérieure 15 de la base 10 de l'armature fixe 6, la base 10 appuie sur le pion 73, ce qui provoque l'enfoncement de la zone déformable 72 et, par l'élasticité de cette dernière, le rattrapage des jeux susceptibles d'apparaítre entre la base 10 de l'armature fixe 6, le socle 3, et le couvercle 4, et le positionnement précis de l'armature fixe 6 par rapport au boítier 2.Under the effect of the pressure of the rib 86 against the upper face 15 from base 10 of fixed frame 6, base 10 presses on pin 73, which causes the deformable zone 72 to sink in and, by the elasticity of this last, the catching up of games likely to appear between the base 10 of the fixed frame 6, the base 3, and the cover 4, and the precise positioning of the fixed frame 6 relative to the housing 2.

En outre, le couvercle 4 présente, sur ses parois avant 76 et arrière 77, deux pattes de fixation 89, 90 perforées ou creusées en forme d'oreille, permettant d'assurer la fixation du déclencheur 1 sur un appareil de protection différentielle (non représenté) bistable susceptible d'être actionné par le déclencheur 1.In addition, the cover 4 has, on its front 76 and rear 77 walls, two fixing lugs 89, 90 perforated or hollowed out in the shape of an ear, for securing trigger 1 on a protective device bistable differential (not shown) capable of being actuated by the trigger 1.

A cet effet, le déclencheur 1 comporte un dispositif d'actionnement 119 qui comprend un poussoir 114 inséré dans un trou traversant 115 pratiqué dans la paroi supérieure 75 du couvercle 4, au droit du corps 22 de palette.To this end, the trigger 1 comprises an actuating device 119 which includes a pusher 114 inserted in a through hole 115 made in the upper wall 75 of the cover 4, in line with the body 22 of the pallet.

Le poussoir 114 comprend une partie extrême supérieure 116 saillant de la paroi supérieure 75 vers l'extérieur et susceptible de coopérer avec l'appareil de protection différentielle, et une partie extrême inférieure 117 saillant de cette paroi 75 vers l'intérieur, et dont le bout forme ou porte une tête 118 hémisphérique susceptible de coopérer avec le corps de palette 22.The pusher 114 comprises an upper end portion 116 projecting from the upper wall 75 towards the outside and capable of cooperating with the device differential protection, and a lower end 117 projecting from this wall 75 inwards, and the end of which forms or carries a head 118 hemispherical capable of cooperating with the pallet body 22.

L'on décrit succinctement le fonctionnement du déclencheur 1.The operation of trigger 1 is briefly described.

La palette 7 est supposée se trouver dans sa position enclenchée, le poussoir 114 se trouvant dans une position dite enfoncée où la tête 118, qui est en appui contre le corps de palette 22, se trouve à distance de la paroi 75 (figures 2, 3).Pallet 7 is assumed to be in its engaged position, the pusher 114 being in a so-called depressed position where the head 118, which is bearing against the pallet body 22, is at a distance from the wall 75 (Figures 2, 3).

Lorsqu'un courant parcourt le bobinage 13, le champ magnétique induit perturbe le champ magnétique de l'aimant permanent 14. Cette perturbation provoque la libération de la palette 7, qui pivote sous l'action du ressort 17 vers sa position déclenchée en entraínant le poussoir 114 vers une position dite remontée (figure 5) où la partie extrême supérieure 116 provoque le déclenchement de l'appareil de protection différentielle. When a current flows through the winding 13, the induced magnetic field disturbs the magnetic field of the permanent magnet 14. This disturbance causes the release of the pallet 7, which pivots under the action of the spring 17 towards its triggered position by driving the pusher 114 to a so-called position ascent (Figure 5) where the upper end 116 causes the trip of the differential protection device.

Sous l'action d'une contrainte mécanique extérieure appliquée sur la partie extrême supérieure 116, et dirigée depuis le haut vers le bas, le poussoir 114 retrouve sa position enfoncée en forçant la palette 7 à occuper sa position enclenchée.Under the action of an external mechanical stress applied to the upper end part 116, and directed from top to bottom, the pusher 114 returns to its depressed position by forcing the pallet 7 to occupy its position engaged.

L'on comprend que de la précision du positionnement du poussoir 114 par rapport au boítier 2 dépend la précision d'action du déclencheur 1, tant en position déclenchée qu'en position enclenchée.It is understood that the precision of the positioning of the pusher 114 by relative to the housing 2 depends the precision of action of the trigger 1, both in triggered position than in engaged position.

En position enclenchée, la position d'élévation du poussoir 114 dépend du positionnement en élévation des armatures 6, 7, c'est-à-dire, compte tenu du fait que la palette 7 se trouve prise entre le poussoir 114 et l'armature fixe 6, du positionnement de l'armature fixe 6 par rapport au boítier 2. Ce positionnement étant précis, comme on l'a vu ci-dessus, la précision du positionnement du poussoir 114 par rapport au boítier 2 est donc assurée.In the engaged position, the elevation position of the pusher 114 depends on the positioning in elevation of the reinforcements 6, 7, that is to say, taking into account the fact that the pallet 7 is caught between the pusher 114 and the fixed frame 6, of the positioning of the fixed frame 6 relative to the housing 2. This positioning being precise, as we saw above, the precision of the positioning of the pusher 114 relative to the housing 2 is therefore ensured.

Revenons à présent à la bobine 11 et à sa carcasse 12.Now back to the coil 11 and its carcass 12.

La carcasse 12 comprend un flasque inférieur 91 et un flasque supérieur 92 encadrant le bobinage 13, reliés par une âme 93 creuse enfilée sur la branche avant 8, et présentant un trou 94 traversant dont la forme est complémentaire de celle-ci.The carcass 12 includes a lower flange 91 and an upper flange 92 framing the winding 13, connected by a hollow core 93 threaded on the front branch 8, and having a through hole 94 whose shape is complementary to it.

La carcasse 12 comprend en outre un pied 95 à section rectangulaire qui saille du flasque inférieur 91, vers le bas. La carcasse 12 est assemblée au socle 3 par enfoncement de son pied 95 dans le trou 66. Les dimensions relatives du pied 95 et du trou 66 sont choisies pour que, une fois enfoncé dans le trou 94, le pied 95 soit monté serré dans ce dernier, de sorte que la carcasse 12, une fois assemblée, soit maintenue fermement dans une position prédéterminée fixe.The carcass 12 further comprises a foot 95 of rectangular section which projection of the lower flange 91, down. Carcass 12 is assembled at base 3 by pressing his foot 95 into the hole 66. The dimensions relative of foot 95 and hole 66 are chosen so that, once pressed into the hole 94, the foot 95 is mounted tightly in the latter, so that the carcass 12, once assembled, be held firmly in a position predetermined fixed.

Le bobinage 13 peut être directement relié à un circuit électrique (non représenté) tel qu'une carte électronique, néanmoins, selon un mode préféré de réalisation, le pied 95 présente deux trous traversants 96 dans chacun desquels est inséré un picot 97 métallique présentant une partie inférieure 98 saillante destinée à être connectée au circuit électrique, ainsi qu'une partie supérieure 99 saillante destinée à être associée au fil du bobinage 13, par exemple par soudage. The winding 13 can be directly connected to an electrical circuit (not shown) such as an electronic card, however, according to a preferred mode of embodiment, the foot 95 has two through holes 96 in each of which is inserted a metallic pin 97 having a projecting lower part 98 intended to be connected to the electrical circuit, as well as an upper part 99 protruding intended to be associated with the winding wire 13, for example by welding.

Avant son assemblage à la carcasse 12, le picot 97 a sensiblement la forme d'un J, sa partie inférieure 98 étant de dimension transversale supérieure à celle de sa partie supérieure 99 (figure 25).Before its assembly to the carcass 12, the pin 97 has substantially the shape of a J, its lower part 98 being of higher transverse dimension to that of its upper part 99 (FIG. 25).

Chaque picot 97 présente à proximité de son centre, c'est-à-dire à la jonction entre ses parties inférieure 98 et supérieure 99, un décrochement 100 formant une butée qui, lorsque le picot 97 est inséré dans le trou 96 correspondant dans le pied 95, vient s'appliquer contre une surface d'appui 101 transversale ménagée dans le trou 96.Each pin 97 presents near its center, that is to say at the junction between its lower 98 and upper 99 parts, a step 100 forming a stop which, when the pin 97 is inserted into the hole 96 corresponding in the foot 95, is applied against a bearing surface 101 transverse formed in the hole 96.

Afin de réaliser l'immobilisation du picot 97 dans le pied 95 pour le rendre solidaire de la carcasse 12, sa partie supérieure 99 est repliée en Z vers l'avant. La partie supérieure 99 présente, à une certaine distance du décrochement 100, un rétrécissement 102 qui, lorsque la partie supérieure 99 est repliée, forme la branche centrale du Z et vient se loger dans une encoche 103 complémentaire réalisée dans la surface supérieure du flasque inférieur 91, et adjacente au trou 96.In order to immobilize the pin 97 in the foot 95 to make it integral with the carcass 12, its upper part 99 is folded in a Z towards the front. The upper part 99 has, at a certain distance from the recess 100, a narrowing 102 which, when the upper part 99 is folded, forms the central branch of the Z and is housed in a complementary notch 103 made in the upper surface of the lower flange 91, and adjacent to the hole 96.

Le picot 97 se trouve ainsi immobilisé en translation selon la direction d'élévation.The pin 97 is thus immobilized in translation in the direction elevation.

La branche avant 8 de l'armature fixe 6 présente une face avant 104 et une face arrière 105 opposées, reliées par deux faces latérales 106, 107. Le trou traversant 94 de l'âme 93 de la carcasse 12 présente, lui aussi, une face avant 108 et une face arrière 109 opposées, reliées par deux faces latérales 110, 111.The front branch 8 of the fixed frame 6 has a front face 104 and a rear face 105 opposite, connected by two lateral faces 106, 107. The hole crossing 94 of the core 93 of the carcass 12 also has a front face 108 and a rear face 109 opposite, connected by two lateral faces 110, 111.

Les dimensions et la conformation du socle 3, de l'armature fixe 6 et de la carcasse 12 sont choisies pour que, une fois ces pièces assemblées, il existe de toute part un jeu entre la branche avant 8 et la carcasse 12, à savoir :

  • un premier jeu J1 entre la face avant 104 de la branche avant 8 et la face arrière 109 du trou 94 de l'âme 93 en regard ;
  • un deuxième jeu J2 entre la face arrière 105 de la branche avant 8 et la face avant 108 du trou 94 de l'âme 93 en regard ;
  • un troisième J3 et un quatrième J4 jeux entre les faces latérales respectives 106, 107, 110, 111 de la branche avant 8 et du trou 94 de l'âme 93 en regard.
The dimensions and the conformation of the base 3, of the fixed frame 6 and of the carcass 12 are chosen so that, once these parts are assembled, there is everywhere a clearance between the front branch 8 and the carcass 12, namely :
  • a first clearance J1 between the front face 104 of the front branch 8 and the rear face 109 of the hole 94 of the facing core 93;
  • a second clearance J2 between the rear face 105 of the front branch 8 and the front face 108 of the hole 94 of the facing core 93;
  • a third J3 and a fourth J4 clearances between the respective lateral faces 106, 107, 110, 111 of the front branch 8 and of the hole 94 of the facing core 93.

Chaque jeu J1, J2, J3, J4 est ici prédéterminé par la chaíne de cotes la plus courte reliant directement les surfaces de jonction de l'armature fixe 6, du socle 3 et de la carcasse 12, en partant d'une surface terminale formée par une face 104, 105, 106, 107 de la branche avant 8 délimitant ledit jeu, pour aboutir à la face 108, 109, 110, 111 du trou 94 en regard, formant une autre surface terminale délimitant le même jeu J1, J2, J3, J4.Each set J1, J2, J3, J4 is here predetermined by the chain of odds shorter directly connecting the junction surfaces of the fixed frame 6, the base 3 and of the carcass 12, starting from a terminal surface formed by a face 104, 105, 106, 107 of the front branch 8 delimiting said clearance, to result in the face 108, 109, 110, 111 of the hole 94 opposite, forming another surface terminal delimiting the same set J1, J2, J3, J4.

Par ailleurs, la dimension d'élévation ou hauteur de la carcasse 12, mesurée entre les faces non en regard des flasques, c'est-à-dire une face inférieure 112 du flasque inférieur 91 et une face supérieure 113 du flasque supérieur 92, est choisie inférieure à la dimension d'élévation ou hauteur de la branche avant 8, c'est-à-dire la distance séparant la face supérieure 15 de la base 10 de la surface de polarisation 20.Furthermore, the elevation dimension or height of the carcass 12, measured between the faces not facing the flanges, that is to say a face lower 112 of the lower flange 91 and an upper face 113 of the flange greater 92, is chosen less than the elevation dimension or height of the front leg 8, that is to say the distance separating the upper face 15 from the base 10 of the polarization surface 20.

Ainsi, lors du montage du déclencheur 1, le pied 95 est enfoncé dans le trou 66 selon une profondeur prédéterminée, telle que, d'une part, la branche avant 8 dépasse du flasque supérieur 92, l'extrémité libre 20 de la branche avant 8 saillant de la face supérieure 113 du flasque supérieur 92, et, d'autre part, la face inférieure 112 du flasque inférieur 91 soit espacée de la face supérieure 15 de la base 10 de sorte qu'il existe un jeu J5 entre elles (figure 2).Thus, when mounting the trigger 1, the foot 95 is pressed into the hole 66 at a predetermined depth, such as, on the one hand, the branch front 8 protrudes from the upper flange 92, the free end 20 of the front branch 8 protruding from the upper face 113 of the upper flange 92, and, on the other hand, the lower face 112 of lower flange 91 is spaced from upper face 15 of base 10 so that there is a clearance J5 between them (FIG. 2).

De la sorte, la carcasse 12 est montée rigidement par rapport au boítier, tout en étant montée flottante par rapport à l'armature fixe 6, c'est-à-dire espacée de celle-ci en tout point. L'armature fixe 6 est ainsi préservée des contraintes et déformations auxquelles est soumise la carcasse 12, notamment lors du montage des picots 97 sur le circuit électrique précité.In this way, the carcass 12 is rigidly mounted relative to the housing, while being mounted floating relative to the fixed frame 6, that is to say spaced of it at any point. The fixed frame 6 is thus preserved from stresses and deformations to which the carcass 12 is subjected, in particular during the mounting pins 97 on the aforementioned electrical circuit.

L'invention n'est nullement limitée au mode de réalisation qui vient d'être décrit à titre d'exemple.The invention is in no way limited to the embodiment which has just been described by way of example.

Claims (14)

Déclencheur électromagnétique comportant un circuit électromagnétique (5) comprenant une armature fixe (6) ainsi qu'une armature mobile (7) susceptible d'occuper deux positions d'équilibre stable, à savoir une position de travail dans laquelle elle se trouve plaquée contre l'armature fixe (6) et ferme le circuit électromagnétique (5), et une position de repos dans laquelle elle est écartée de l'armature fixe (6) et ouvre le circuit électromagnétique (5), caractérisé en ce que l'armature mobile (7) est apte à occuper une troisième position d'équilibre stable dans laquelle elle est écartée de l'armature fixe (6) au-delà de la position de repos.Electromagnetic trip device comprising an electromagnetic circuit (5) comprising a fixed armature (6) and a movable armature (7) capable of occupying two positions of stable equilibrium, namely a working position in which it is pressed against the fixed armature (6) and closes the electromagnetic circuit (5), and a rest position in which it is moved away from the fixed armature (6) and opens the electromagnetic circuit (5), characterized in that the movable armature (7) is able to occupy a third stable equilibrium position in which it is spaced from the fixed frame (6) beyond the rest position. Déclencheur électromagnétique selon la revendication 1, caractérisé en ce qu'il comprend une plaquette (31) fixée à l'armature fixe (6) et par rapport à laquelle est montée pivotante l'armature mobile (7).Electromagnetic trip device according to claim 1, characterized in that it comprises a plate (31) fixed to the fixed frame (6) and relative to which the movable frame (7) is pivotally mounted. Déclencheur électromagnétique selon la revendication 2, caractérisé en ce que ladite armature mobile (7) est sollicitée vers sa position de repos par un ressort de rappel (17) ancré d'une part dans ladite armature mobile (7), et d'autre part sur ladite plaquette (31).Electromagnetic trip device according to claim 2, characterized in that said movable armature (7) is biased towards its rest position by a return spring (17) anchored on the one hand in said movable armature (7), and on the other hand on said plate (31). Déclencheur électromagnétique selon la revendication 2 ou la revendication 3, caractérisé en ce que ladite plaquette (31) comporte une surface d'appui ((35) contre laquelle est susceptible de s'appliquer, sous l'action du ressort de rappel (17), une partie biseautée (26) de l'armature mobile (7), ladite partie biseautée (26) formant un axe (A) de pivotement de l'armature mobile (7).Electromagnetic trip device according to claim 2 or claim 3, characterized in that said plate (31) has a bearing surface ((35) against which is capable of being applied, under the action of the return spring (17) , a bevelled part (26) of the mobile frame (7), said bevelled part (26) forming an axis (A) of pivoting of the mobile frame (7). Déclencheur électromagnétique selon la revendication 4, caractérisé en ce que la plaquette (31) comporte un logement (43) situé à distance de l'armature fixe (6), susceptible de recevoir l'armature mobile (7) dans sa troisième position d'équilibre stable.Electromagnetic trip device according to claim 4, characterized in that the plate (31) comprises a housing (43) located at a distance from the fixed armature (6), capable of receiving the movable armature (7) in its third position stable balance. Déclencheur électromagnétique selon la revendication 5, caractérisé en ce que, dans sa troisième position de repos, l'armature mobile (7) se trouve maintenue dans ledit logement (43) sous l'action du ressort de rappel (17).Electromagnetic trip device according to claim 5, characterized in that , in its third rest position, the movable armature (7) is held in said housing (43) under the action of the return spring (17). Déclencheur électromagnétique selon la revendication 6, caractérisé en ce que l'armature mobile (7) présente une butée (50, 51) venant s'appliquer, sous l'action du ressort de rappel, contre une surface d'appui (47) dudit logement (43), ladite butée (50, 51) étant distincte de ladite partie biseautée (26).Electromagnetic trip device according to claim 6, characterized in that the movable armature (7) has a stop (50, 51) which is applied, under the action of the return spring, against a bearing surface (47) of said housing (43), said stop (50, 51) being separate from said bevelled part (26). Déclencheur électromagnétique selon la revendication 7, caractérisé en ce que ladite armature mobile (7) présente un trou traversant (39) pour l'ancrage du ressort (17), et en ce qu'il existe un porte-à-faux entre ce trou (39) et ladite butée (50, 51).Electromagnetic trip device according to claim 7, characterized in that said movable frame (7) has a through hole (39) for anchoring the spring (17), and in that there is a cantilever between this hole (39) and said stop (50, 51). Déclencheur électromagnétique selon l'une des revendications 5 à 8, caractérisé en ce que ladite plaquette (31) comporte une patte (33, 34) qui dépasse de l'armature fixe (6) et présente une surface formant ladite surface d'appui (35) contre laquelle est susceptible de s'appliquer ladite partie biseautée (26) de l'armature mobile (7), cette patte (33, 34) étant prolongée, au-delà de l'armature fixe (6), par une extension coudée (42) en forme de crochet qui forme ledit logement (43).Electromagnetic trip device according to one of claims 5 to 8, characterized in that said plate (31) has a tab (33, 34) which protrudes from the fixed frame (6) and has a surface forming said bearing surface ( 35) against which is likely to apply said bevelled part (26) of the movable frame (7), this tab (33, 34) being extended, beyond the fixed frame (6), by an extension angled (42) in the form of a hook which forms said housing (43). Déclencheur électromagnétique selon la revendication 9, caractérisé en ce que la plaquette (31) comporte deux pattes (33, 34) semblables qui encadrent l'armature mobile (7) dont une partie (37), dans laquelle est ancré le ressort de rappel (17), se trouve, en étant libre de se mouvoir, entre les pattes (33, 34).Electromagnetic trip device according to claim 9, characterized in that the plate (31) has two similar tabs (33, 34) which frame the movable frame (7) including a part (37), in which the return spring is anchored ( 17), is, being free to move, between the legs (33, 34). Déclencheur électromagnétique selon l'une des revendications 2 à 10, caractérisé en ce que l'armature mobile (7) se présente sous la forme d'une palette.Electromagnetic trip device according to one of claims 2 to 10, characterized in that the movable armature (7) is in the form of a pallet. Déclencheur électromagnétique selon l'une des revendications 2 à 11, caractérisé en ce que l'armature fixe (6) est en forme de U, et comporte une première et une deuxième branches (8, 9) reliées par une base (10), ladite plaquette (31) étant fixée à ladite deuxième branche (9).Electromagnetic trip device according to one of claims 2 to 11, characterized in that the fixed armature (6) is U-shaped, and has first and second branches (8, 9) connected by a base (10), said plate (31) being fixed to said second branch (9). Déclencheur électromagnétique selon la revendication 12, caractérisé en ce qu'il comporte un boítier (2) dans lequel est disposé le circuit électromagnétique (5), ledit boítier (2) comportant un socle (3) coiffé d'un couvercle (4), socle (3) sur lequel repose l'armature fixe (6).Electromagnetic trip device according to claim 12, characterized in that it comprises a housing (2) in which the electromagnetic circuit (5) is arranged, said housing (2) comprising a base (3) capped with a cover (4), base (3) on which the fixed frame (6) rests. Déclencheur électromagnétique selon la revendication 13, caractérisé en ce que l'armature fixe (6) est assujettie audit boítier (2), sa base (10) se trouvant immobilisée, serrée, entre le socle (3) et le couvercle (4).Electromagnetic trip device according to claim 13, characterized in that the fixed armature (6) is subject to said housing (2), its base (10) being immobilized, clamped, between the base (3) and the cover (4).
EP02290799A 2001-04-06 2002-03-29 Electromagnetic tripdevice with an electromagnetic circuit and an armature capable of maintaining three stable poritions Expired - Lifetime EP1248278B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0104724 2001-04-06
FR0104724A FR2823371B1 (en) 2001-04-06 2001-04-06 ELECTROMAGNETIC TRIGGER COMPRISING AN ELECTROMAGNETIC CIRCUIT WHOSE MOBILE FRAME IS CAPABLE OF OCCUPATING THREE POSITIONS OF STABLE BALANCE

Publications (2)

Publication Number Publication Date
EP1248278A1 true EP1248278A1 (en) 2002-10-09
EP1248278B1 EP1248278B1 (en) 2005-10-19

Family

ID=8862044

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Application Number Title Priority Date Filing Date
EP02290799A Expired - Lifetime EP1248278B1 (en) 2001-04-06 2002-03-29 Electromagnetic tripdevice with an electromagnetic circuit and an armature capable of maintaining three stable poritions

Country Status (7)

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EP (1) EP1248278B1 (en)
CN (1) CN1249759C (en)
AT (1) ATE307385T1 (en)
DE (1) DE60206682T2 (en)
ES (1) ES2248495T3 (en)
FR (1) FR2823371B1 (en)
PL (1) PL200461B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110767407B (en) * 2019-10-14 2021-03-05 西南交通大学 Multistable electromagnetic operating mechanism
FR3118334B1 (en) 2020-12-18 2022-12-23 Legrand France Electrical device for the protection of an alternating current electrical installation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512064A (en) * 1921-03-31 1924-10-21 Krupp Ag Automatic electromagnetic switch
FR2620264A1 (en) * 1987-09-03 1989-03-10 Merlin Gerin MAGNETIC TRIGGER WITH KNIFE ARTICULATION
EP0337900A1 (en) * 1988-04-14 1989-10-18 Merlin Gerin High sensitivity electromagnetic tripper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1512064A (en) * 1921-03-31 1924-10-21 Krupp Ag Automatic electromagnetic switch
FR2620264A1 (en) * 1987-09-03 1989-03-10 Merlin Gerin MAGNETIC TRIGGER WITH KNIFE ARTICULATION
EP0337900A1 (en) * 1988-04-14 1989-10-18 Merlin Gerin High sensitivity electromagnetic tripper

Also Published As

Publication number Publication date
EP1248278B1 (en) 2005-10-19
ATE307385T1 (en) 2005-11-15
CN1249759C (en) 2006-04-05
ES2248495T3 (en) 2006-03-16
PL200461B1 (en) 2009-01-30
FR2823371A1 (en) 2002-10-11
DE60206682T2 (en) 2006-07-13
FR2823371B1 (en) 2004-11-26
PL353196A1 (en) 2002-10-07
DE60206682D1 (en) 2005-11-24
CN1380670A (en) 2002-11-20

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