EP0403329A1 - Circuit breaker with automatic tripping, particularly protective switch and fault-current protective switch - Google Patents

Circuit breaker with automatic tripping, particularly protective switch and fault-current protective switch Download PDF

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Publication number
EP0403329A1
EP0403329A1 EP90401431A EP90401431A EP0403329A1 EP 0403329 A1 EP0403329 A1 EP 0403329A1 EP 90401431 A EP90401431 A EP 90401431A EP 90401431 A EP90401431 A EP 90401431A EP 0403329 A1 EP0403329 A1 EP 0403329A1
Authority
EP
European Patent Office
Prior art keywords
contact
pawl
contact carrier
rod
movable
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.)
Withdrawn
Application number
EP90401431A
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German (de)
French (fr)
Inventor
Denis Deckert
Jean-Marie Roiatti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP0403329A1 publication Critical patent/EP0403329A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor

Definitions

  • the invention relates to electric devices with automatic cut-off, in particular to circuit breakers or differential circuit breakers, of the type having a lock mechanism comprising, between a rotary actuating member and a tilting contact carrier (s) on which is mounted at at least one movable contact cooperating with a fixed contact and which is biased by a first spring in the direction of opening or separation of the movable contact relative to the fixed contact, a toggle and ratchet mechanism capable, on the one hand, when this mechanism is tensioned, to transmit the movement of the operating member to the contact carrier (s) both in the opening direction and in the opposite direction or closing direction, and on the other hand, at the time where this mechanism is relaxed by trigger means acting independently of the operating member on the pawl, causing the return of the contact carrier (s) from its closed position to its position opening, this mechanism being arranged so as to allow the operating member to rearm the device, that is to say to tighten the mechanism by bringing it back from its open position after the release to its position normal opening, after cessation of
  • a first objective of the invention is to produce such an apparatus, in particular of the "phase + neutral" type, that is to say having a movable phase contact and a movable neutral contact, the speed and reliability of which separation of movable contacts from fixed contacts are particularly high.
  • Another object of the invention is to produce such an apparatus, the movable contact lock mechanism of which is particularly well suited to application to circuit-breakers of the "phase + neutral" type.
  • Yet another objective of the invention is to produce such a device having great simplicity of manufacture and assembly.
  • the invention relates to an apparatus, of the type defined above, which is characterized in that the trigger lever of the pawl is articulated in an intermediate location to present a lower arm and an upper arm, the lower arm being capable of being actuated by said trigger means and the upper arm then being capable, shortly after actuation of the pawl, of pushing the movable contact (s) and the contact carrier (s) into the open position around their ( s) axis (s), with increased angular speed.
  • the trigger lever is preferably substantially pivoted in its central part, its lower end, that is to say opposite to that which carries the finger, being, preferably, shaped in the form of a fork, to be driven by the disjunction member, for example, a disjunction coil core, preferably by traction provided by a relief or enlarged head of a rod extending the core. It is thus easy to at least double the speed of contact opening.
  • the trigger lever can receive the rod capable of being actuated by a thermal disjunction bimetallic strip.
  • the contacts each have a window into which a finger of the trigger lever penetrates, which can thus push the contact for tearing off during disjunction when the finger abuts against the end of the window, while the pawl, mounted, preferably around the same axis, has a portion extending between the two tabs of the contact carrier (s) to come in the vicinity of the end of the trigger lever which carries the fingers
  • the contact carrier (s) has, at its upper part, that is to say on the side where the operating member is located and which is opposite the base used for fixing the device, a thrust surface inclined in a direction favoring the escape of the second end of the connecting rod, while the pawl, preferably articulated on the same axis as the contact carrier (s), has a latching surface substantially oriented towards its axis in a tangential direction to normally prevent the escape of the connecting rod and towards its lower part, an extension capable of being driven, in the direction of release of the toggle joint, by one end of the trigger lever.
  • the two phase and neutral circuits are completely separated by a central partition in the housing of the device.
  • the contact carrier (s) then advantageously has an enlarged upper head from which extend, in the direction of the base of the device, two legs capable of receiving, on either side, each time a movable contact.
  • the enlarged head of the contact carrier has a lumen in which one end of the connecting rod can move, remaining guided, this lumen comprising said inclined thrust surface which is followed by a part of lumen allowing the escape of the end of the rod which remains however guided for its automatic return to the initial opening position.
  • the movable contacts are preferably articulated practically on the pivot axis of the contact carrier (s) with a slight clearance allowing them thanks to a point of support at level of the head of the contact carrier (s), to move at the end of the closing stroke relative to the contact carrier (s) to ensure pressure and contact wear compensation.
  • the device shown is of the phase + neutral circuit breaker type, that is to say having two internal circuits disposed respectively between two pairs of terminals, namely a phase circuit and a neutral circuit with, in each of the circuits, a movable contact. and a fixed contact.
  • the housing 1 of the device is represented by its silhouette and comprises a base 2 provided with usual means of fixing on a rail and, on the opposite, a top 3.
  • the two circuits are accessible in the usual way by cage terminals. 4, 5 for the phase circuit and 6, 7 for the neutral circuit.
  • the phase and neutral terminals are respectively shifted in height for the purpose of polarization.
  • the phase circuit comprises, from terminal 4, a disjunction coil coil breech 8 in the form of a cage, obtained from a single piece cut and folded and having an extension 9 integrating into terminal 4, this cylinder head electrically continuing through the fixed contact 10 isolated from the cylinder head 8 then the mobile contact 11 capable of approaching or deviating from the fixed contact, the mobile contact being mechanically and electrically secured to a deformable and conductive braid 12 connected to a end of a thermal disjunction bimetal 13 fixed on a conductive strip 14, an extension 15 of which is integrated in the other phase terminal 5.
  • These disjunction means are all located on the side of the base 2 of the housing.
  • the cylinder head 8 contains, mounted inside, a coil 16 whose end, on the side of the terminal 4, is welded to the cylinder head and whose other end 17 appears through a notch opening into a circular opening of the yoke 8 so as to be able to be welded to a ring 18 forming one of the ends of the folded blade constituting the fixed contact 10, the other elongated end 19 of which forms a conventional electrode for electric switching of the arc with a extinguishing chamber of the usual arc.
  • the ring 18 is fixed on the yoke 8, with the interposition of an insulating part coming from the insulating tube 16b, concentrically with the circular opening of the yoke through which the rod 20 can pass which extends a mobile magnetic core 21 capable, when the coil 16 is excited, of move in the direction tending to bring the rod 20 into the coil.
  • the rod 20 ends with a flattened head 22.
  • the position of the bimetal strip can be adjusted in the usual way by an adjustment screw 23 passing through a nut 24 immobilized in the housing to come to cooperate with the part opposite the part 14.
  • the neutral circuit comprises, for its part, a fixed contact 25 including an extension 26, running along the base of the housing, is integrated in the terminal 6 passing under the yoke 8 which occupies substantially the entire width of the housing , the contact 25 further comprising an extension 27 similar to the extension 19 and intended to cooperate with an arc extinguishing chamber.
  • the circuit continues with the neutral movable contact 28 also connected to a flexible braid 29 continuing with a conductive blade 30 integrating with the terminal 7.
  • the various fixed parts listed are maintained in the housing 1 advantageously formed of two half-housings separated by a wall in the median plane and comprising, inside them, the reliefs and bosses necessary to receive and immobilize the parts.
  • the locking mechanism of the device comprises an operating member 31 pivoted in the housing in the middle of its top 3 and having an actuating lever 32 emerging outside through a lumen from the top of the housing.
  • the articulation axis of this operating member consists of a cylindrical passage 33 capable of pivoting on two fixed pivots penetrating the passage on either side and carried by the half-housings forming the housing 1.
  • the actuating member also comprises towards one of the sides an extension pierced with a passage 34 in which can come articulate one of the two end branches of a short U-shaped link 35.
  • the mechanism also includes a contact carrier 36 made of molded insulating material and having an upper transverse head 37 from which extend down two legs 38 leaving between them a space and each carrying a pivot 39, the transverse head 37 having an elongated lumen 40, the shape of which will appear better in FIGS. 1 and 2, and which receives the second end arm of the connecting rod 35.
  • the lumen 40 has a short part approximately tangential to the pivot 39, then a rising part characterized by an inclined thrust surface 41.
  • the lumen 40 is then extended by a new, roughly tangential part, the assembly light allowing the guided movement inside, of the end of the connecting rod 35.
  • the lower surface of the lumen 40, on each of the branches 38, is determined by a thickening of the tab at this level, this thickening having a recess 42 oriented towards the corresponding pivot 39.
  • This recess 42 receives the upper end 43 of the movable contacts 11, respectively 28, which also each have a slightly oblong hole 44 allowing the passage of the pivots 39 of the contact carrier so that it is understood that the movable contacts 11, 28 , mounted on the contact carrier, can slightly pivot around their top 43 by resting in their respective recesses 42, their angular movement being limited by the small possible movement on the pivots 39 in the oblong holes 44.
  • the movable contacts have still on their edge, and a little above the oblong holes 44, centering reliefs 45 allowing the centering and the support each time of a powerful spring 46 which ensures, in a manner known per se, both the contact pressure when the contacts are in the closed position and the recall of the contacts in the opening direction.
  • the movable contacts 11, 28 also have, at a certain distance below the oblong holes 44, substantially rectangular holes 47, after which they are extended by the actual contact tail to which the braid 29 is fixed, the contacts having still, on the other side, a long nose 48, extending in the vicinity of the arc extinguishing chambers.
  • a pawl 49 having the general shape of a lever with two branches located in the extension of one another, on either side of a notch of circular shape 50 allowing its mounting on the hub 61, the upper arm of the pawl 49 ending in the pawl spout 51 whose lower surface is practically tangential with respect to the geometric pivot axis common to the pawl and to the contact carrier.
  • a hole 52 makes it possible to receive the curved end of a weak circular spring 53 housed in a groove in one of the legs 38 and the other radially curved end of which is received in a corresponding notch opening on the groove of the tab 38. This spring tends to recall the pawl anticlockwise in FIG. 1.
  • the end 54 of the other lower arm of the pawl 49 projects downwards under the end of the contact carrier 36 so as to come to cooperate with a trigger lever 55 carrying, in its center, a pivot 56 allowing its mounting rapid, in pivoting, in a suitable hole in the median insulating wall, the upper arm of the trigger lever 55, which is slightly offset relative to the median plane of the housing, having on both sides of this plane two transverse fingers 57 and 58 which, when the various parts of the mechanism are mounted, penetrate respectively into the rectangular holes 47 of the movable contacts 11, 28.
  • the most long, 58 can intercept the lower end 54 of the pawl 49.
  • the lower arm of the trigger 55 which extends downwards, has a lateral fork 59, through which the rod 20 can pass, but whose spacing is sufficiently weak to prevent the passage of the head 22 which terminates the rod 20. Furthermore, the base of the fork has, on the other side, a hole in which the shortest branch of a rod can come U shape with uneven branches 60 which, suitably guided in a sliding manner by guide surfaces of the housing, extends towards the free lower end of the bimetallic strip 13.
  • the lower and upper arms of the trigger lever being of substantially equal lengths, the fingers 57, 58 will move at the same speed as the plunger rod 20 with its head 22.
  • the windows 47 being located approximately halfway between the pivots 39 of the contact carrier, on which the movable contacts pivot, and the contact points 62 not far from the path of the rod 20, the speed of opening of the movable contacts at contact point 62 will be doubled compared to that which would result from a direct drive of the contacts by the rod 20.
  • the operation is as follows: starting from the open position, that is to say from open contacts, represented in FIG. 1, it is made to rotate clockwise, by gripping the lever 32, the operating member 31. This doing so, the connecting rod 35, after having slid slightly in the slot 40, and being prevented from escaping by the pawl 49 shown in hatched lines in FIGS. 1 and 2, abuts on the thrust surface 41 of the slot 40 so that, very quickly, the contact carrier 36 is forced to pivot despite the resistance of the springs 46 whose thrust, applied to the two movable contacts 11, 28, is transmitted by these to the contact carrier at the level of the support of the heads 43 in the recesses 42 of the contact carrier.
  • the pawl 49 held in its relative position relative to the contact carrier by the spring 53, comes, by its end 54, almost in contact with the finger 58 of the trigger 55.
  • the latter has its forked end 59 in the vicinity of the enlarged head 22 of the rod 20.
  • the rod 60 inserted in a hole in the trigger 55, extends in the vicinity of the bimetallic strip 13.
  • the angular speed of the fingers 57, 58 is in a 1/1 ratio with the speed of the fork 59, that is to say the speed of movement of the plunger core.
  • the fingers 57, 58 come into contact with the ends of the holes 47, they drive the movable contacts with an angular speed twice that which they would have if they were actuated at the level of the trajectory of the disjunction rod 20, of the fact that the windows are located approximately equidistant from the pivot point 39 and the physical contact point 62 of the movable and fixed contacts.
  • the assembly is found in the open position of Figure 1.
  • Triggering by progressive overload of the protected circuit is also obtained by the deformation of the bimetallic strip 13 which, bearing on the rod 60, will push the trigger lever 55 counterclockwise, thus ensuring the release of the toggle joint and the opening contacts by the springs 46.
  • the housing in which the mechanism which has just been described is housed may advantageously have a central insulating wall separating the phase part from the neutral part of the device.

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Abstract

The appliance, of the phase + neutral protective switch kind, possesses a phase circuit and a neutral circuit electrically isolated by a central partition, the lock mechanism, of the type with toggle, comprising a manoeuvering member (31) actuating a connecting-rod (35) able to thrust back the contact(s)-holder (36) via a thrust surface (41) into a slot in the head of the contact(s)-holder, the contacts (11, 28) being positioned outside the contact(s)-holder possessing two downward foot-shaped extensions, a catch (49) normally keeping the connecting-rod bearing on the thrust surface, this catch being able to be released by a release lever (55) articulated at its centre, and driven by a tripping coil or a bimetallic strip, and driving the contact(s) with enhanced speed. <IMAGE>

Description

L'invention est relative aux appareils électriques à coupure automatique, notamment aux disjoncteurs ou dis­joncteurs différentiels, du genre de ceux possédant un mécanisme de serrure comprenant, entre un organe rotatif de manoeuvre et un porte-contact(s) basculant sur lequel est monté au moins un contact mobile coopérant avec un contact fixe et qui est sollicité par un premier ressort dans le sens de l'ouverture ou séparation du contact mobile par rap­port au contact fixe, un mécanisme à genouillère et à cli­quet capable, d'une part, lorsque ce mécanisme est tendu, de transmettre le mouvement de l'organe de manoeuvre au porte-­contact(s) aussi bien dans le sens de l'ouverture que dans le sens opposé ou sens de la fermeture, et d'autre part, au moment où ce mécanisme est détendu par des moyens de déclenchement agissant indépendamment de l'organe de manoeuvre sur le cliquet, de provoquer le retour du porte-­contact(s) de sa position de fermeture à sa position d'ouverture, ce mécanisme étant agencé de manière à permet­tre à l'organe de manoeuvre de réarmer l'appareil, c'est-à-­dire de retendre le mécanisme en le ramenant de sa position d'ouverture après le déclenchement à sa position d'ouverture normale, après cessation de l'intervention des moyens de déclenchement et sous l'action d'un deuxième ressort agis­sant sur cet organe de manoeuvre, lequel mécanisme est essentiellement constitué d'une bielle articulée par l'une de ses extrémités sur l'organe de manoeuvre, selon un axe excentré par rapport à l'axe de rotation de l'organe de manoeuvre et susceptible de s'arc-bouter par son autre extrémité contre une surface de poussée du porte-contact(s), d'un cliquet susceptible de maintenir ladite bielle dans sa position arc-boutée, et d'un levier déclencheur sensible à un organe de disjonction pour repousser le cliquet à une position libérant la bielle de façon à provoquer la cassure de la genouillère et le basculement du porte-contact(s) dans le sens de la séparation des contacts fixe et mobile.The invention relates to electric devices with automatic cut-off, in particular to circuit breakers or differential circuit breakers, of the type having a lock mechanism comprising, between a rotary actuating member and a tilting contact carrier (s) on which is mounted at at least one movable contact cooperating with a fixed contact and which is biased by a first spring in the direction of opening or separation of the movable contact relative to the fixed contact, a toggle and ratchet mechanism capable, on the one hand, when this mechanism is tensioned, to transmit the movement of the operating member to the contact carrier (s) both in the opening direction and in the opposite direction or closing direction, and on the other hand, at the time where this mechanism is relaxed by trigger means acting independently of the operating member on the pawl, causing the return of the contact carrier (s) from its closed position to its position opening, this mechanism being arranged so as to allow the operating member to rearm the device, that is to say to tighten the mechanism by bringing it back from its open position after the release to its position normal opening, after cessation of the intervention of the triggering means and under the action of a second spring acting on this operating member, which mechanism essentially consists of a connecting rod articulated by one of its ends on the operating member, along an axis eccentric relative to the axis of rotation of the operating member and capable of bracing at its other end against a thrust surface of the contact carrier (s), d '' a pawl capable of holding said rod in its braced position, and of a trigger lever sensitive to a disjunction member for pushing the pawl to a position releasing the rod so as to cause the breaking of the toggle joint and the tilting of the contact carrier (s) in the direction of separation of the fixed and movable contacts.

Un premier objectif de l'invention est de réaliser un tel appareil, notamment du type "phase + neutre", c'est-à-­dire possédant un contact mobile de phase et un contact mobile de neutre, dont la rapidité et la fiabilité de séparation des contacts mobiles d'avec les contacts fixes soient particulièrement élevées.A first objective of the invention is to produce such an apparatus, in particular of the "phase + neutral" type, that is to say having a movable phase contact and a movable neutral contact, the speed and reliability of which separation of movable contacts from fixed contacts are particularly high.

Un autre objectif de l'invention est de réaliser un tel appareil dont le mécanisme de serrure de contact mobile soit particulièrement bien adapté à l'application aux dis­joncteurs du type "phase + neutre".Another object of the invention is to produce such an apparatus, the movable contact lock mechanism of which is particularly well suited to application to circuit-breakers of the "phase + neutral" type.

Un autre objectif encore de l'invention est de réaliser un tel dispositif ayant une grande simplicité de fabrication et de montage.Yet another objective of the invention is to produce such a device having great simplicity of manufacture and assembly.

L'invention concerne un appareil, du genre défini ci-­dessus, qui est caractérisé en ce que le levier déclencheur du cliquet est articulé en un emplacement intermédiaire pour présenter un bras inférieur et un bras supérieur, le bras inférieur étant susceptible d'être actionné par lesdits moyens de déclenchement et le bras supérieur étant alors susceptible, peu après l'actionnement du cliquet, de repousser le(s) contact(s) mobile(s) et le porte-contact(s) en position d'ouverture autour de leur(s) axe(s), avec une vitesse angulaire accrue.The invention relates to an apparatus, of the type defined above, which is characterized in that the trigger lever of the pawl is articulated in an intermediate location to present a lower arm and an upper arm, the lower arm being capable of being actuated by said trigger means and the upper arm then being capable, shortly after actuation of the pawl, of pushing the movable contact (s) and the contact carrier (s) into the open position around their ( s) axis (s), with increased angular speed.

Le levier déclencheur est, de préférence, sensiblement pivoté en sa partie centrale, son extrémité inférieure c'est-à-dire opposée à celle qui porte le doigt, étant, de préférence, conformée sous la forme d'une fourche, pour être entraînée par l'organe de disjonction, par exemple, un noyau de bobine de disjonction, de préférence par traction assurée par un relief ou tête élargie d'une tige prolongeant le noyau. On peut ainsi facilement au moins doubler la vitesse d'ouverture de contact.The trigger lever is preferably substantially pivoted in its central part, its lower end, that is to say opposite to that which carries the finger, being, preferably, shaped in the form of a fork, to be driven by the disjunction member, for example, a disjunction coil core, preferably by traction provided by a relief or enlarged head of a rod extending the core. It is thus easy to at least double the speed of contact opening.

Egalement, à cette extrémité inférieure, le levier déclencheur peut recevoir la tringle susceptible d'être actionnée par une bilame de disjonction thermique.Also, at this lower end, the trigger lever can receive the rod capable of being actuated by a thermal disjunction bimetallic strip.

De façon préférée, les contacts présentent chacun une fenêtre dans laquelle pénètre un doigt du levier déclencheur qui peut ainsi repousser le contact pour l'arrachage lors de la disjonction lorsque le doigt vient buter contre l'extrémité de la fenêtre, alors que le cliquet, monté, de préférence autour du même axe, présente une partie s'étendant entre les deux pattes du porte-contact(s) pour venir au voisinage de l'extrémité du levier déclencheur qui porte les doigtsPreferably, the contacts each have a window into which a finger of the trigger lever penetrates, which can thus push the contact for tearing off during disjunction when the finger abuts against the end of the window, while the pawl, mounted, preferably around the same axis, has a portion extending between the two tabs of the contact carrier (s) to come in the vicinity of the end of the trigger lever which carries the fingers

De préférence, le porte-contact(s) possède, à sa partie supérieure, c'est-à-dire du côté où est situé l'organe de manoeuvre et qui est opposé à la base servant à la fixation de l'appareil, une surface de poussée inclinée dans un sens favorisant l'échappement de la seconde extrémité de bielle, alors que le cliquet, articulé de préférence sur le même axe que le porte-contact(s), possède une surface d'encliquetage sensiblement orientée vers son axe dans une direction tangentielle pour empêcher normalement l'échappement de la bielle et vers sa partie inférieure, un prolongement susceptible d'être entraîné, en direction de libération de la genouillère, par une extrémité du levier déclencheur.Preferably, the contact carrier (s) has, at its upper part, that is to say on the side where the operating member is located and which is opposite the base used for fixing the device, a thrust surface inclined in a direction favoring the escape of the second end of the connecting rod, while the pawl, preferably articulated on the same axis as the contact carrier (s), has a latching surface substantially oriented towards its axis in a tangential direction to normally prevent the escape of the connecting rod and towards its lower part, an extension capable of being driven, in the direction of release of the toggle joint, by one end of the trigger lever.

De façon avantageuse, dans le cas d'un disjoncteur phase + neutre, les deux circuits phase et neutre sont complètement séparés par une cloison médiane dans le boîtier de l'appareil. Le porte-contact(s) présente alors avan­tageusement une tête élargie supérieure à partir de laquelle s'étendent, en direction de la base de l'appareil, deux pattes susceptibles de recevoir, de part et d'autre, chaque fois un contact mobile. De préférence, la tête élargie du porte-contacts présente une lumière dans laquelle peut se déplacer, en y restant guidée, une extrémité de la bielle, cette lumière comportant ladite surface de poussée inclinée qui se poursuit par une partie de lumière permettant l'échappement de l'extrémité de bielle qui reste cependant guidée pour son retour automatique en position initiale d'ouverture. Les contacts mobiles, réalisés, de préférence, sous forme de pièces métalliques découpées, sont, de préférence, articulés pratiquement sur l'axe de pivotement du porte-contact(s) avec un léger jeu leur permettant grâce à un point d'appui au niveau de la tête du porte-contact(s), de se déplacer en fin de course de fermeture par rapport au porte-contact(s) pour assurer la pression et le rattrapage d'usure de contact.Advantageously, in the case of a phase + neutral circuit breaker, the two phase and neutral circuits are completely separated by a central partition in the housing of the device. The contact carrier (s) then advantageously has an enlarged upper head from which extend, in the direction of the base of the device, two legs capable of receiving, on either side, each time a movable contact. . Preferably, the enlarged head of the contact carrier has a lumen in which one end of the connecting rod can move, remaining guided, this lumen comprising said inclined thrust surface which is followed by a part of lumen allowing the escape of the end of the rod which remains however guided for its automatic return to the initial opening position. The movable contacts, preferably made in the form of cut metal parts, are preferably articulated practically on the pivot axis of the contact carrier (s) with a slight clearance allowing them thanks to a point of support at level of the head of the contact carrier (s), to move at the end of the closing stroke relative to the contact carrier (s) to ensure pressure and contact wear compensation.

D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description suivante, faite à titre d'exemple non limitatif et se référant au dessin annexé dans lequel :

  • la figure 1 représente une vue en élévation, côté phase, de l'appareil en position de contacts ouverts, le boîtier étant simplement représenté par sa silhouette,
  • la figure 2 représente une vue similaire en position de contacts fermés,
  • la figure 3 représente une vue éclatée de l'appareil,
  • la figure 4 représente une vue en perspective des différentes pièces de la figure 3 à l'état assemblé,
  • la figure 5 représente une coupe V-V selon la figure 2.
Other advantages and characteristics of the invention will appear on reading the following description, given by way of nonlimiting example and referring to the appended drawing in which:
  • FIG. 1 represents an elevation view, phase side, of the apparatus in the open contact position, the housing being simply represented by its silhouette,
  • FIG. 2 represents a similar view in the closed contact position,
  • FIG. 3 represents an exploded view of the device,
  • FIG. 4 represents a perspective view of the various parts of FIG. 3 in the assembled state,
  • FIG. 5 represents a section VV according to FIG. 2.

L'appareil représenté est du genre disjoncteur phase + neutre, c'est-à-dire possédant deux circuits internes disposés respectivement entre deux paires de bornes, à savoir un circuit phase et un circuit neutre avec, dans cha­cun des circuits, un contact mobile et un contact fixe. Le boîtier 1 de l'appareil est représenté par sa silhouette et comporte une base 2 munie de moyens usuels de fixation sur un rail et, à l'opposé, un sommet 3. Les deux circuits sont accessibles de façon usuelle par des bornes à cage 4, 5 pour le circuit phase et 6, 7 pour le circuit neutre. Les bornes phase et neutre sont respectivement décalées en hauteur dans un but de détrompage. Le circuit phase comporte, à partir de la borne 4, une culasse de bobine de disjonction 8 en forme de cage, obtenue à partir d'une seule pièce découpée et pliée et présentant un prolongement 9 s'intégrant dans la borne 4, cette culasse se poursuivant électriquement par le contact fixe 10 isolé de la culasse 8 puis le contact mobile 11 susceptible de se rapprocher ou de s'écarter du contact fixe, le contact mobile étant mécaniquement et électrique­ment solidaire d'une tresse déformable et conductrice 12 reliée à une extrémité d'une bilame de disjonction thermique 13 fixée sur une lame conductrice 14 dont un prolongement 15 s'intègre dans l'autre borne de phase 5. Ces moyens de dis­jonction sont tous situés du côté de la base 2 du boîtier.The device shown is of the phase + neutral circuit breaker type, that is to say having two internal circuits disposed respectively between two pairs of terminals, namely a phase circuit and a neutral circuit with, in each of the circuits, a movable contact. and a fixed contact. The housing 1 of the device is represented by its silhouette and comprises a base 2 provided with usual means of fixing on a rail and, on the opposite, a top 3. The two circuits are accessible in the usual way by cage terminals. 4, 5 for the phase circuit and 6, 7 for the neutral circuit. The phase and neutral terminals are respectively shifted in height for the purpose of polarization. The phase circuit comprises, from terminal 4, a disjunction coil coil breech 8 in the form of a cage, obtained from a single piece cut and folded and having an extension 9 integrating into terminal 4, this cylinder head electrically continuing through the fixed contact 10 isolated from the cylinder head 8 then the mobile contact 11 capable of approaching or deviating from the fixed contact, the mobile contact being mechanically and electrically secured to a deformable and conductive braid 12 connected to a end of a thermal disjunction bimetal 13 fixed on a conductive strip 14, an extension 15 of which is integrated in the other phase terminal 5. These disjunction means are all located on the side of the base 2 of the housing.

Plus précisément, la culasse 8 contient, montée à son intérieur, une bobine 16 dont l'extrémité, du côté de la borne 4, est soudée à la culasse et dont l'autre extrémité 17 apparaît à travers une échancrure débouchant sur une ouverture circulaire de la culasse 8 de façon à pouvoir être soudée à une bague 18 formant l'une des extrémités de la lame pliée constituant le contact fixe 10, dont l'autre extrémité allongée 19 forme une électrode conventionnelle de commutation électrique de l'arc avec une chambre d'extinction de l'arc usuelle. La bague 18 est fixée sur la culasse 8, avec interposition d'une partie isolante venue du tube isolant 16b, concentriquement à l'ouverture circulaire de la culasse à travers laquelle peut passer la tige 20 qui prolonge un noyau magnétique mobile 21 susceptible, lorsque la bobine 16 est excitée, de se déplacer dans le sens ten­dant à faire entrer la tige 20 dans la bobine. La tige 20 se termine par une tête aplatie 22.More specifically, the cylinder head 8 contains, mounted inside, a coil 16 whose end, on the side of the terminal 4, is welded to the cylinder head and whose other end 17 appears through a notch opening into a circular opening of the yoke 8 so as to be able to be welded to a ring 18 forming one of the ends of the folded blade constituting the fixed contact 10, the other elongated end 19 of which forms a conventional electrode for electric switching of the arc with a extinguishing chamber of the usual arc. The ring 18 is fixed on the yoke 8, with the interposition of an insulating part coming from the insulating tube 16b, concentrically with the circular opening of the yoke through which the rod 20 can pass which extends a mobile magnetic core 21 capable, when the coil 16 is excited, of move in the direction tending to bring the rod 20 into the coil. The rod 20 ends with a flattened head 22.

La position de la bilame peut être réglée d'une manière usuelle par une vis de réglage 23 traversant un écrou 24 immobilisé dans le boîtier pour venir coopérer avec la par­tie en regard de la pièce 14.The position of the bimetal strip can be adjusted in the usual way by an adjustment screw 23 passing through a nut 24 immobilized in the housing to come to cooperate with the part opposite the part 14.

Le circuit neutre comporte, pour sa part, un contact fixe 25 dont un prolongement 26, courant le long de la base du boîtier, s'intègre dans la borne 6 en passant sous la culasse 8 qui occupe sensiblement la totalité de la largeur du boîtier, le contact 25 comprenant encore un prolongement 27 analogue au prolongement 19 et destiné à coopérer avec une chambre d'extinction d'arc. Le circuit se poursuit par le contact mobile neutre 28 également relié à une tresse souple 29 se poursuivant par une lame conductrice 30 s'intégrant à la borne 7. Les différentes pièces fixes énumérées sont maintenues dans le boîtier 1 avantageusement formé de deux demi-boîtiers séparés par une paroi dans le plan médian et comportant, à leur intérieur, les reliefs et bossages nécessaires pour recevoir et immobiliser les pièces.The neutral circuit comprises, for its part, a fixed contact 25 including an extension 26, running along the base of the housing, is integrated in the terminal 6 passing under the yoke 8 which occupies substantially the entire width of the housing , the contact 25 further comprising an extension 27 similar to the extension 19 and intended to cooperate with an arc extinguishing chamber. The circuit continues with the neutral movable contact 28 also connected to a flexible braid 29 continuing with a conductive blade 30 integrating with the terminal 7. The various fixed parts listed are maintained in the housing 1 advantageously formed of two half-housings separated by a wall in the median plane and comprising, inside them, the reliefs and bosses necessary to receive and immobilize the parts.

Le mécanisme de serrure de l'appareil comporte un organe de manoeuvre 31 pivoté dans le boîtier au milieu de son sommet 3 et possédant une manette d'actionnement 32 émergeant à l'extérieur à travers une lumière du sommet du boîtier. L'axe d'articulation de cet organe de manoeuvre est constitué d'un passage cylindrique 33 susceptible de pivoter sur deux pivots fixes pénétrant dans le passage de part et d'autre et portés par les demi-boîtiers formant le boîtier 1. L'organe de manoeuvre comporte encore vers l'un des côtés un prolongement percé d'un passage 34 dans lequel peut venir s'articuler l'une des deux branches d'extrémité d'une courte bielle 35 en forme de U.The locking mechanism of the device comprises an operating member 31 pivoted in the housing in the middle of its top 3 and having an actuating lever 32 emerging outside through a lumen from the top of the housing. The articulation axis of this operating member consists of a cylindrical passage 33 capable of pivoting on two fixed pivots penetrating the passage on either side and carried by the half-housings forming the housing 1. The actuating member also comprises towards one of the sides an extension pierced with a passage 34 in which can come articulate one of the two end branches of a short U-shaped link 35.

Le mécanisme comporte également un porte-contacts 36 en matière isolante moulée et présentant une tête transversale supérieure 37 à partir de laquelle s'étendent vers le bas deux pattes 38 laissant entre elles un espace et portant chacune un pivot 39, la tête transversale 37 présentant une lumière allongée 40, dont la forme apparaîtra mieux sur les figures 1 et 2, et qui reçoit le second bras d'extrémité de la bielle 35. On voit qu'à partir de l'extrémité la plus proche de l'organe de manoeuvre, la lumière 40 présente une courte partie à peu près tangentielle par rapport au pivot 39, puis une partie montante se caractérisant par une sur­face inclinée de poussée 41. La lumière 40 se prolonge ensuite par une nouvelle partie à peu près tangentielle, l'ensemble de la lumière permettant le débattement guidé à son intérieur, de l'extrémité de la bielle 35.The mechanism also includes a contact carrier 36 made of molded insulating material and having an upper transverse head 37 from which extend down two legs 38 leaving between them a space and each carrying a pivot 39, the transverse head 37 having an elongated lumen 40, the shape of which will appear better in FIGS. 1 and 2, and which receives the second end arm of the connecting rod 35. It can be seen that from the end closest to the operating member , the lumen 40 has a short part approximately tangential to the pivot 39, then a rising part characterized by an inclined thrust surface 41. The lumen 40 is then extended by a new, roughly tangential part, the assembly light allowing the guided movement inside, of the end of the connecting rod 35.

La surface inférieure de la lumière 40, sur chacune des branches 38, est déterminée par un épaississement de la patte à ce niveau, cet épaississement présentant une creu­sure 42 orientée vers le pivot correspondant 39.The lower surface of the lumen 40, on each of the branches 38, is determined by a thickening of the tab at this level, this thickening having a recess 42 oriented towards the corresponding pivot 39.

Cette creusure 42 reçoit l'extrémité supérieure 43 des contacts mobiles 11, respectivement 28, lesquels présentent également chacun un trou légèrement oblong 44 permettant le passage des pivots 39 du porte-contacts de sorte que l'on comprend que les contacts mobiles 11, 28, montés sur le porte-contacts, peuvent légèrement pivoter autour de leur sommet 43 en s'appuyant dans leurs creusures respectives 42, leur débattement angulaire étant limité par le faible débattement possible sur les pivots 39 dans les trous oblongs 44. Les contacts mobiles présentent encore sur leur tranche, et un peu au-dessus des trous oblongs 44, des reliefs de centrage 45 permettant le centrage et l'appui chaque fois d'un puissant ressort 46 qui assure, d'une façon en soi connue, à la fois la pression de contact lorsque les contacts sont en position fermée et le rappel du porte-­ contacts en direction d'ouverture. Les contacts mobiles 11, 28 présentent encore, à une certaine distance au-dessous des trous oblongs 44, des trous sensiblement rectangulaires 47, après quoi ils se prolongent par la queue de contact propre­ment dite à laquelle est fixée la tresse 29, les contacts présentant encore, de l'autre côté, un long nez 48, s'étendant au voisinage des chambres d'extinction d'arc.This recess 42 receives the upper end 43 of the movable contacts 11, respectively 28, which also each have a slightly oblong hole 44 allowing the passage of the pivots 39 of the contact carrier so that it is understood that the movable contacts 11, 28 , mounted on the contact carrier, can slightly pivot around their top 43 by resting in their respective recesses 42, their angular movement being limited by the small possible movement on the pivots 39 in the oblong holes 44. The movable contacts have still on their edge, and a little above the oblong holes 44, centering reliefs 45 allowing the centering and the support each time of a powerful spring 46 which ensures, in a manner known per se, both the contact pressure when the contacts are in the closed position and the recall of the contacts in the opening direction. The movable contacts 11, 28 also have, at a certain distance below the oblong holes 44, substantially rectangular holes 47, after which they are extended by the actual contact tail to which the braid 29 is fixed, the contacts having still, on the other side, a long nose 48, extending in the vicinity of the arc extinguishing chambers.

A l'intérieur du porte-contacts, c'est-à-dire entre les deux pattes 38 de celui-ci, est basculé autour d'un moyeu central 61 du porte-contacts centré sur l'axe de pivotement, c'est-à-dire les pivots 39, un cliquet 49 ayant la forme générale d'un levier à deux branches situées dans le pro­longement l'une de l'autre, de part et d'autre d'une encoche de forme circulaire 50 permettant son montage sur le moyeu 61, le bras supérieur du cliquet 49 se terminant par le bec de cliquet 51 dont la surface inférieure est pratiquement tangentielle par rapport à l'axe géométrique de pivotement commun au cliquet et au porte-contacts. Un trou 52 permet de recevoir l'extrémité recourbée d'un faible ressort circu­laire 53 logé dans une gorge de l'une des pattes 38 et dont l'autre extrémité radialement recourbée est reçue dans une encoche correspondante s'ouvrant sur la gorge de la patte 38. Ce ressort tend à rappeler le cliquet dans le sens anti-horaire sur la figure 1.Inside the contact carrier, that is to say between the two lugs 38 thereof, is tilted around a central hub 61 of the contact carrier centered on the pivot axis, this is ie the pivots 39, a pawl 49 having the general shape of a lever with two branches located in the extension of one another, on either side of a notch of circular shape 50 allowing its mounting on the hub 61, the upper arm of the pawl 49 ending in the pawl spout 51 whose lower surface is practically tangential with respect to the geometric pivot axis common to the pawl and to the contact carrier. A hole 52 makes it possible to receive the curved end of a weak circular spring 53 housed in a groove in one of the legs 38 and the other radially curved end of which is received in a corresponding notch opening on the groove of the tab 38. This spring tends to recall the pawl anticlockwise in FIG. 1.

L'extrémité 54 de l'autre bras, inférieur, du cliquet 49 dépasse vers le bas sous l'extrémité du porte-contacts 36 de façon à venir coopérer avec un levier déclencheur 55 por­tant, en son centre, un pivot 56 permettant son montage rapide, en pivotement, dans un trou convenable de la paroi isolante médiane, le bras supérieur du levier déclencheur 55, lequel est un peu déporté par rapport au plan médian du boîtier, présentant de part et d'autre de ce plan deux doigts transversaux 57 et 58 qui, lorsque les différentes pièces du mécanisme sont montées, pénètrent respectivement dans les trous rectangulaires 47 des contacts mobiles 11, 28. En outre, dans sa partie centrale, le doigt le plus long, 58, peut venir intercepter l'extrémité inférieure 54 du cliquet 49. Le bras inférieur du déclencheur 55, qui se prolonge vers le bas, présente une fourche latérale 59, à travers laquelle peut passer la tige 20, mais dont l'écartement est suffisamment faible pour interdire le pas­sage de la tête 22 qui termine la tige 20. Par ailleurs, la base de la fourche présente, de l'autre côté, un trou dans lequel peut venir pénétrer la branche la plus courte d'une tringle en forme de U à branches inégales 60 qui, conven­ablement guidée de façon glissante par des surfaces de guid­age du boîtier, s'étend vers l'extrémité inférieure libre de la bilame 13.The end 54 of the other lower arm of the pawl 49 projects downwards under the end of the contact carrier 36 so as to come to cooperate with a trigger lever 55 carrying, in its center, a pivot 56 allowing its mounting rapid, in pivoting, in a suitable hole in the median insulating wall, the upper arm of the trigger lever 55, which is slightly offset relative to the median plane of the housing, having on both sides of this plane two transverse fingers 57 and 58 which, when the various parts of the mechanism are mounted, penetrate respectively into the rectangular holes 47 of the movable contacts 11, 28. In addition, in its central part, the most long, 58, can intercept the lower end 54 of the pawl 49. The lower arm of the trigger 55, which extends downwards, has a lateral fork 59, through which the rod 20 can pass, but whose spacing is sufficiently weak to prevent the passage of the head 22 which terminates the rod 20. Furthermore, the base of the fork has, on the other side, a hole in which the shortest branch of a rod can come U shape with uneven branches 60 which, suitably guided in a sliding manner by guide surfaces of the housing, extends towards the free lower end of the bimetallic strip 13.

Dans la forme de réalisation décrite, on voit que, les bras inférieur et supérieur du levier déclencheur étant de longueurs sensiblement égales, les doigts 57, 58 se déplaceront à la même vitesse que la tige de plongeur 20 avec sa tête 22. Les fenêtres 47 étant situées à peu près à mi-distance entre les pivots 39 du porte-contacts, sur lesquels pivotent les contacts mobiles, et les points de contact 62 peu éloignés de la trajectoire de la tige 20, la vitesse d'ouverture des contacts mobiles au point de contact 62 sera doublée par rapport à celle qui résulterait d'un entraînement direct des contacts par la tige 20.In the embodiment described, it can be seen that, the lower and upper arms of the trigger lever being of substantially equal lengths, the fingers 57, 58 will move at the same speed as the plunger rod 20 with its head 22. The windows 47 being located approximately halfway between the pivots 39 of the contact carrier, on which the movable contacts pivot, and the contact points 62 not far from the path of the rod 20, the speed of opening of the movable contacts at contact point 62 will be doubled compared to that which would result from a direct drive of the contacts by the rod 20.

Le fonctionnement est le suivant : partant de la posi­tion ouverte, c'est-à-dire de contacts ouverts, représentée sur la figure 1, on fait tourner en sens horaire, en saisis­sant la manette 32, l'organe de manoeuvre 31. Ce faisant, la bielle 35, après avoir légèrement coulissé dans la lumière 40, et étant empêchée de s'échapper par le cliquet 49 représenté en traits hachurés sur les figures 1 et 2, vient buter sur la surface de poussée 41 de la lumière 40 de sorte que, très rapidement, le porte-contacts 36 se trouve con­traint de pivoter malgré la résistance des ressorts 46 dont la poussée, appliquée aux deux contacts mobiles 11, 28, est transmise par ceux-ci au porte-contacts au niveau de l'appui des têtes 43 dans les creusures 42 du porte-contacts. Le basculement du porte-contacts et des contacts autour des pivots 39 se poursuit alors jusqu'à ce que les contacts 11, 28 viennent buter contre leurs contacts fixes respectifs, moment à partir duquel les contacts mobiles peuvent basculer légèrement par rapport au porte-contacts à l'encontre de la poussée des ressorts 46 par le débattement de leurs trous oblongs 44, ce qui assure la pression de contact comme on le voit à l'état de contact fermé sur la figure 2. Une action en sens inverse de l'opérateur sur la manette permettrait alors de ramener l'ensemble dans sa position ouverte.The operation is as follows: starting from the open position, that is to say from open contacts, represented in FIG. 1, it is made to rotate clockwise, by gripping the lever 32, the operating member 31. This doing so, the connecting rod 35, after having slid slightly in the slot 40, and being prevented from escaping by the pawl 49 shown in hatched lines in FIGS. 1 and 2, abuts on the thrust surface 41 of the slot 40 so that, very quickly, the contact carrier 36 is forced to pivot despite the resistance of the springs 46 whose thrust, applied to the two movable contacts 11, 28, is transmitted by these to the contact carrier at the level of the support of the heads 43 in the recesses 42 of the contact carrier. The tilting of the contact carrier and of the contacts around the pivots 39 then continues until the contacts 11, 28 abut against their respective fixed contacts, at which point the movable contacts can tilt slightly relative to the contact carrier at against the thrust of the springs 46 by the movement of their oblong holes 44, which ensures the contact pressure as seen in the closed contact state in Figure 2. An action in reverse direction of the operator on the lever would then return the assembly to its open position.

Dans la position de contact fermé, représentée sur la figure 2, le cliquet 49, maintenu dans sa position relative par rapport au porte-contacts par le ressort 53, vient, par son extrémité 54, presque au contact du doigt 58 du déclencheur 55. Celui-ci présente son extrémité fourchue 59 au voisinage de la tête élargie 22 de la tige 20. La tringle 60, insérée dans un trou du déclencheur 55, s'étend au voisinage de la bilame 13.In the closed contact position, shown in FIG. 2, the pawl 49, held in its relative position relative to the contact carrier by the spring 53, comes, by its end 54, almost in contact with the finger 58 of the trigger 55. The latter has its forked end 59 in the vicinity of the enlarged head 22 of the rod 20. The rod 60, inserted in a hole in the trigger 55, extends in the vicinity of the bimetallic strip 13.

En cas d'apparition d'une surintensité brutale, la bobine 16 du disjoncteur est excitée et le plongeur 21 se déplace brutalement vers la droite sur la figure 2 de sorte que presque instantanément la partie élargie 22 de sa tige 20 entraîne, par sa fourche 59, le déclencheur 55 qui bas­cule en sens anti-horaire sur la figure 2. Ce faisant, le déclencheur fait basculer le cliquet 49 autour du moyeu 61 en sens horaire, libérant rapidement l'extrémité de la bielle du fait que le bec 51 s'éloigne, ce qui autorise la cassure de la genouillère formée par le porte-contacts, la biellette et l'organe de manoeuvre, ce qui suffit déjà à provoquer une séparation rapide des contacts sous l'action des ressorts 46. En outre, la poursuite du mouvement du plongeur amène rapidement les doigts 57 et 58 à buter contre l'extrémité des trous 47, des contacts 11, 28, provoquant à partir de ce moment l'arrachage des contacts mobiles qui s'éloignent rapidement des contacts fixes 10, 25.In the event of a sudden overcurrent, the coil 16 of the circuit breaker is excited and the plunger 21 suddenly moves to the right in Figure 2 so that almost instantly the widened part 22 of its rod 20 drives, by its fork 59, the trigger 55 which switches counterclockwise in FIG. 2. In doing so, the trigger causes the pawl 49 to tilt around the hub 61 in a clockwise direction, quickly releasing the end of the connecting rod because the spout 51 s moves away, which authorizes the breakage of the toggle formed by the contact carrier, the link and the operating member, which is already sufficient to cause rapid separation of the contacts under the action of the springs 46. In addition, the continuation of the movement of the plunger rapidly causes the fingers 57 and 58 to abut against the end of the holes 47, of the contacts 11, 28, causing from this moment the lifting of the movable contacts which quickly move away from the fixed contacts 10, 25.

Dans la forme préférée décrite, le levier déclencheur 55 étant pivoté en son centre, la vitesse angulaire des doigts 57, 58 est dans un rapport 1/1 avec la vitesse de la fourche 59, c'est-à-dire la vitesse de déplacement du noyau plongeur. Dès que les doigts 57, 58 viennent au contact des extrémités des trous 47, ils entraînent les contacts mobiles avec une vitesse angulaire double de celle qu'ils auraient s'ils étaient actionnés au niveau de la trajectoire de la tige de disjonction 20, du fait que les fenêtres sont situées approximativement à égale distance du point de pivotement 39 et du point de contact physique 62 des con­tacts mobiles et fixes. A la fin du mouvement, l'ensemble se retrouve dans la position ouverte de la figure 1.In the preferred form described, the trigger lever 55 being pivoted in its center, the angular speed of the fingers 57, 58 is in a 1/1 ratio with the speed of the fork 59, that is to say the speed of movement of the plunger core. As soon as the fingers 57, 58 come into contact with the ends of the holes 47, they drive the movable contacts with an angular speed twice that which they would have if they were actuated at the level of the trajectory of the disjunction rod 20, of the fact that the windows are located approximately equidistant from the pivot point 39 and the physical contact point 62 of the movable and fixed contacts. At the end of the movement, the assembly is found in the open position of Figure 1.

Un déclenchement par surcharge progressive du circuit protégé est également obtenu par la déformation de la bilame 13 qui, prenant appui sur la tringle 60, va repousser en sens anti-horaire le levier déclencheur 55, assurant ainsi le déclenchement de la genouillère et l'ouverture des con­tacts par les ressorts 46.Triggering by progressive overload of the protected circuit is also obtained by the deformation of the bimetallic strip 13 which, bearing on the rod 60, will push the trigger lever 55 counterclockwise, thus ensuring the release of the toggle joint and the opening contacts by the springs 46.

Comme cela a été dit, le boîtier, dans lequel est logé le mécanisme qui vient d'être décrit, peut avantageusement présenter une paroi isolante médiane séparant la partie phase de la partie neutre de l'appareil.As has been said, the housing in which the mechanism which has just been described is housed may advantageously have a central insulating wall separating the phase part from the neutral part of the device.

Claims (10)

1. Appareil électrique à coupure automatique, du genre possédant un mécanisme de serrure comprenant un organe rota­tif de manoeuvre (31) et un porte-contact(s) basculant (36) sur lequel est monté au moins un contact mobile (11, 28) coopérant avec un contact fixe (10, 25) et qui est sollicité par un premier ressort (46) dans le sens de l'ouverture ou séparation du contact mobile par rapport au contact fixe, un mécanisme à genouillère et à cliquet capable, d'une part, lorsque ce mécanisme est tendu, de transmettre le mouvement de l'organe de manoeuvre (31) au porte-contact(s) (36) aussi bien dans le sens de l'ouverture que dans le sens opposé ou sens de la fermeture, et d'autre part, au moment où ce mécanisme est détendu par des moyens de déclenchement (13, 21) agissant indépendamment de l'organe de manoeuvre (31) sur le cliquet (49), de provoquer le retour du porte-­contact(s) (36) de sa position de fermeture à sa position d'ouverture, ce mécanisme étant agencé de manière à permet­tre à l'organe de manoeuvre de réarmer l'appareil après ces­sation de l'intervention des moyens de déclenchement et sous l'action d'un deuxième ressort agissant sur cet organe de manoeuvre, ledit mécanisme étant essentiellement composé d'une bielle (35) articulée selon un axe excentré par rap­port à l'axe de rotation de l'organe de manoeuvre et suscep­tible de s'arc-bouter par son autre extrémité contre une surface de poussée (41) du porte-contact(s), d'un cliquet (49) susceptible de maintenir ladite bielle (35) dans sa position arc-boutée, et d'un levier déclencheur (55) sensi­ble à un organe de disjonction pour repousser le cliquet dans une position libérant la bielle de façon à provoquer la cassure de la genouillère et le basculement du porte-­contact(s) dans le sens de séparation des contacts fixe et mobile, caractérisé en ce que le levier déclencheur de cli­quet (55) est articulé en un emplacement intermédiaire (56) pour présenter un bras inférieur et un bras supérieur, le bras inférieur étant susceptible d'être actionné par des moyens de déclenchement (20, 60) et le bras supérieur étant alors susceptible, peu après l'actionnement du cliquet (49), de repousser le(s) contact(s) mobile(s) et le porte-­contact(s) en position d'ouverture autour de leur(s) axe(s) (39) avec une vitesse angulaire accrue par rapport à la vitesse des moyens de déclenchement.1. Electric apparatus with automatic cut-off, of the type having a lock mechanism comprising a rotary operating member (31) and a tilting contact carrier (s) (36) on which is mounted at least one movable contact (11, 28) cooperating with a fixed contact (10, 25) and which is biased by a first spring (46) in the direction of opening or separation of the movable contact relative to the fixed contact, a toggle and ratchet mechanism capable of on the one hand, when this mechanism is tensioned, to transmit the movement of the operating member (31) to the contact carrier (s) (36) both in the direction of the opening and in the opposite direction or direction of the closing, and on the other hand, when this mechanism is relaxed by triggering means (13, 21) acting independently of the operating member (31) on the pawl (49), to cause the return of the holder contact (s) (36) from its closed position to its open position, this mechanism being arranged in m way to allow the operating member to rearm the device after cessation of the intervention of the triggering means and under the action of a second spring acting on this operating member, said mechanism being essentially composed of a connecting rod (35) articulated along an axis eccentric with respect to the axis of rotation of the operating member and capable of bracing at its other end against a thrust surface (41) of the contact carrier (s), a pawl (49) capable of holding said rod (35) in its braced position, and a trigger lever (55) sensitive to a disjunction member for pushing the pawl into a position releasing the rod so as to cause the toggle joint to break and the contact carrier (s) to tilt in the direction of separation of the fixed and mobile contacts, characterized in that the pawl trigger lever (55) is articulated in an intermediate location (56) to present an inf arm and an upper arm, the lower arm being capable of being actuated by trigger means (20, 60) and the upper arm then being capable, shortly after actuation of the pawl (49), of pushing the movable contact (s) and the contact carrier (s) into open position around their axis (s) (39) with an increased angular speed relative to the speed of the triggering means. 2. Appareil selon la revendication 1, caractérisé en ce que les longueurs des bras inférieur et supérieur du levier déclencheur sont sensiblement égales.2. Apparatus according to claim 1, characterized in that the lengths of the lower and upper arms of the trigger lever are substantially equal. 3. Appareil selon la revendication 2, caractérisé en ce que le bras supérieur du levier déclencheur actionne le(s) contact(s) mobile(s) (11) en un emplacement situé sensible­ment à mi-distance entre l'axe de pivotement (39) desdits contacts mobiles et la zone de contact entre contact fixe (10) et contact mobile (11) de façon à doubler la vitesse d'ouverture de contact.3. Apparatus according to claim 2, characterized in that the upper arm of the trip lever actuates the contact (s) mobile (s) (11) at a location located substantially midway between the pivot axis ( 39) of said movable contacts and the contact area between fixed contact (10) and movable contact (11) so as to double the speed of contact opening. 4. Appareil selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le cliquet (49) possède un pro­longement inférieur (54) susceptible d'être actionné par l'extrémité du doigt (58) du levier déclencheur (55).4. Apparatus according to any one of claims 1 to 3, characterized in that the pawl (49) has a lower extension (54) capable of being actuated by the end of the finger (58) of the trigger lever (55) . 5. Appareil selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le contact mobile possède une fenêtre intermédiaire (47) dans laquelle pénètrent les doigts (57, 58) de l'extrémité du bras supérieur du levier déclencheur (55).5. Apparatus according to any one of claims 1 to 4, characterized in that the movable contact has an intermediate window (47) into which penetrate the fingers (57, 58) of the end of the upper arm of the trigger lever (55 ). 6. Appareil selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le porte-contact(s) (36) présente des pattes ou prolongements (38) disposées de part et d'autre d'une partie centrale dans laquelle peut pivoter le cliquet (49), des contacts mobiles de phase (11) et de neu­tre (28) étant montés sur le porte-contact(s) sur les faces respectives extérieures desdits prolongements en étant articulés, par des trous oblongs (44) des contacts mobiles, sur des pivots (39) présentés par lesdites pattes (38) du porte-contact(s) (36).6. Apparatus according to any one of claims 1 to 5, characterized in that the contact carrier (s) (36) has lugs or extensions (38) arranged on either side of a central part in which can pivot the pawl (49), movable phase (11) and neutral (28) contacts being mounted on the contact carrier (s) on the respective external faces of said extensions while being articulated, by oblong holes (44) movable contacts, on pivots (39) presented by said tabs (38) of the contact carrier (s) (36). 7. Appareil selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ledit déclencheur (55) présente, à son extrémité inférieure, une partie en forme de fourche (59) pour être entraînée par une tête (22) d'une tige (20) de noyau plongeur de disjonction (21).7. Apparatus according to any one of claims 1 6, characterized in that said trigger (55) has, at its lower end, a fork-shaped part (59) to be driven by a head (22) of a rod (20) of disjunction plunger core ( 21). 8. Appareil selon la revendication 7, caractérisé en ce qu'au niveau de ladite fourche, le levier déclencheur présente un trou permettant l'accrochage d'une tringle (60) susceptible d'être actionnée par une bilame (13).8. Apparatus according to claim 7, characterized in that at said fork, the trigger lever has a hole allowing the attachment of a rod (60) capable of being actuated by a bimetallic strip (13). 9. Appareil selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le porte-contacts (36) présente, à sa partie supérieure, une surface de poussée (41) inclinée dans le sens favorisant l'échappement de la seconde extrémité de bielle, le cliquet (49) possédant une surface d'encliquetage sensiblement orientée vers son axe de pivote­ment dans une direction tangentielle pour empêcher l'échappement de la bielle, le porte-contacts (36) présentant, au-delà de ladite surface de poussée, une lumière d'échappement de l'extrémité de bielle.9. Apparatus according to any one of claims 1 to 8, characterized in that the contact carrier (36) has, at its upper part, a thrust surface (41) inclined in the direction favoring the escape of the second end of connecting rod, the pawl (49) having a latching surface substantially oriented towards its pivot axis in a tangential direction to prevent escape of the rod, the contact carrier (36) having, beyond said surface thrust, an exhaust light from the end of the connecting rod. 10. Appareil selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le contact mobile présente un prolongement (48) orienté obliquement vers le haut en direc­tion d'une cage d'extinction d'arc.10. Apparatus according to any one of claims 1 to 9, characterized in that the movable contact has an extension (48) oriented obliquely upwards towards an arc extinguishing cage.
EP90401431A 1989-06-16 1990-05-30 Circuit breaker with automatic tripping, particularly protective switch and fault-current protective switch Withdrawn EP0403329A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8908027 1989-06-16
FR8908027A FR2648615B1 (en) 1989-06-16 1989-06-16 IMPROVEMENTS ON AUTOMATIC SWITCHES, IN PARTICULAR FOR CIRCUIT BREAKERS AND CIRCUIT BREAKERS

Publications (1)

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EP0403329A1 true EP0403329A1 (en) 1990-12-19

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EP90401431A Withdrawn EP0403329A1 (en) 1989-06-16 1990-05-30 Circuit breaker with automatic tripping, particularly protective switch and fault-current protective switch

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EP (1) EP0403329A1 (en)
FR (1) FR2648615B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570647A1 (en) * 1992-05-13 1993-11-24 Hager Electro S.A. Switch latch for a circuit breaker and circuit breakers incorporating it
ES2047445A2 (en) * 1992-04-13 1994-02-16 Securel Sa Automatic circuit breaker.
EP1643530A1 (en) * 2004-10-01 2006-04-05 Hager Electro S.A. Adjustable driver for an electric line protection device
EP2717284A1 (en) * 2012-10-05 2014-04-09 Schneider Electric Industries SAS Operating device of an electric protection apparatus and electric protection apparatus comprising same
CN108288552A (en) * 2018-02-24 2018-07-17 浙江正泰电器股份有限公司 Conversion equipment and automatic transfer switching electric appliance

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE7632486U1 (en) * 1976-10-18 1977-01-27 Brown, Boveri & Cie Ag, 6800 Mannheim Electrical circuit breaker for overcurrent and short-circuit current tripping
DE3007243A1 (en) * 1980-02-27 1981-09-03 Brown, Boveri & Cie Ag, 6800 Mannheim Fault-current protection switch - has spring mechanism for two-armed release flap and magnetic release
US4656446A (en) * 1985-12-17 1987-04-07 Westinghouse Electric Corp. Current limiting circuit breaker with series double break contact system per pole
EP0218497A1 (en) * 1985-09-20 1987-04-15 Telemecanique Protective circuit breaker with a resilient link

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7632486U1 (en) * 1976-10-18 1977-01-27 Brown, Boveri & Cie Ag, 6800 Mannheim Electrical circuit breaker for overcurrent and short-circuit current tripping
DE3007243A1 (en) * 1980-02-27 1981-09-03 Brown, Boveri & Cie Ag, 6800 Mannheim Fault-current protection switch - has spring mechanism for two-armed release flap and magnetic release
EP0218497A1 (en) * 1985-09-20 1987-04-15 Telemecanique Protective circuit breaker with a resilient link
US4656446A (en) * 1985-12-17 1987-04-07 Westinghouse Electric Corp. Current limiting circuit breaker with series double break contact system per pole

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047445A2 (en) * 1992-04-13 1994-02-16 Securel Sa Automatic circuit breaker.
EP0570647A1 (en) * 1992-05-13 1993-11-24 Hager Electro S.A. Switch latch for a circuit breaker and circuit breakers incorporating it
EP1643530A1 (en) * 2004-10-01 2006-04-05 Hager Electro S.A. Adjustable driver for an electric line protection device
EP2717284A1 (en) * 2012-10-05 2014-04-09 Schneider Electric Industries SAS Operating device of an electric protection apparatus and electric protection apparatus comprising same
CN103715029A (en) * 2012-10-05 2014-04-09 施耐德电器工业公司 Operating device of electric protection apparatus and electric protection apparatus comprising same
FR2996678A1 (en) * 2012-10-05 2014-04-11 Schneider Electric Ind Sas DEVICE FOR CONTROLLING AN ELECTRICAL PROTECTION DEVICE AND ELECTRICAL PROTECTION APPARATUS COMPRISING IT
CN103715029B (en) * 2012-10-05 2018-04-20 施耐德电器工业公司 The operation device of electric protection equipment and the electric protection equipment including the operation device
CN108288552A (en) * 2018-02-24 2018-07-17 浙江正泰电器股份有限公司 Conversion equipment and automatic transfer switching electric appliance
CN108288552B (en) * 2018-02-24 2023-09-12 浙江正泰电器股份有限公司 Switching device and automatic switching device

Also Published As

Publication number Publication date
FR2648615B1 (en) 1991-09-13
FR2648615A1 (en) 1990-12-21

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