EP2368256B1 - Mechanical trip device for a line switchgear - Google Patents

Mechanical trip device for a line switchgear Download PDF

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Publication number
EP2368256B1
EP2368256B1 EP09805720.1A EP09805720A EP2368256B1 EP 2368256 B1 EP2368256 B1 EP 2368256B1 EP 09805720 A EP09805720 A EP 09805720A EP 2368256 B1 EP2368256 B1 EP 2368256B1
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EP
European Patent Office
Prior art keywords
lever
trigger
spring
pivoting
bar
Prior art date
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Application number
EP09805720.1A
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German (de)
French (fr)
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EP2368256A1 (en
Inventor
Davy Morian
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
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Hager Electro SAS
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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
    • H01H71/50—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
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms

Definitions

  • the present invention relates to a mechanical tripping device for electrical apparatus for cutting off at least one electrical line, conventionally comprising a fixed contact and a mobile contact per line.
  • these devices also comprise a maneuvering member movable manually and movable between two stable positions respectively corresponding to the opening and closing of the contacts.
  • a third stable position located between the first two, marking an intermediate position corresponding to the opening of the contacts resulting from the tilting of the lock following overcurrent due to overload or short circuit.
  • the movement of the lever of this intermediate position towards the open position and beyond the latter in a reset position allows the reset of the trigger device, ie the reset of the device in the operative position .
  • the document FR 2 783 349 describes a device according to the preamble of claim 1.
  • the invention relates more particularly to so-called electrical appliances with molded housing.
  • this type of device comprises return means against which the (s) movable contact (s) is (are) moved (s) by the operating member in the closed position, and the (them) recalls (s) in open position under the effect of the pivoting of the release.
  • the electrical apparatus concerned is in most cases a multipole apparatus and, for the calibres concerned, each line is provided with a bimetallic strip and a magnetic motor reacting respectively to the overloads and over-currents in the line, each of which can trigger the product if these assumptions occur.
  • the existence of a single trigger lock to manage if necessary several lines, and the need for an equal transmission of information appearing in case of problem on a line, regardless of the positioning of said line with respect to the lock assumes the existence of a precise mechanism, especially since it is also in charge of the rearming of the assembly, which can lead to relatively complex designs.
  • the existing configurations because of the high level of reliability required, do not always have the degree of compatibility required with the economic logic particularly specific to the industrialization phase.
  • One of the aims of this invention is thus to simplify said mechanism, and in particular to pool as far as possible some of the components, to obtain an economic gain resulting as much from the reduction in the number of components as simplification of the assembly.
  • a protruding part of the lever cooperating with an edge of the trigger during the reset causes pivoting in the opposite direction of the trigger, said edge causing the pivoting of the lever against the spring by pressing on said projecting part, the spring in turn soliciting the transmission bar in the rearm position.
  • a single spring is used so that at the time of rearming, it is possible to reset the pivoting lever and the rotary transmission bar.
  • these components are designed so that they have positioning means and relative games allowing a mechanical release action for a trigger in one direction, resetting in the other direction, by rotation simultaneous or successive involving in certain phases the release of the energy of the single torsion spring and in other phases the accumulation of this energy.
  • the spring is thus placed in the kinematic chain that it constitutes with the pivoting lever and the transmission bar, so that the sequential actions on its branches have an effect, depending on the operating phase, on one or the other. other of these components or both at the same time.
  • the torsion spring comprises a spiral central portion wound around the pivot shaft of the lever.
  • the orifice with which the protrusion cooperates and the window of the lever in which the tab of the trigger is inserted are one and the same orifice.
  • the rotary transmission rod that reflects the displacements of the magnetic and thermal subassemblies is free to rotate about a fixed rod relative to the housing of the apparatus, said bar being disposed transversely to said housing and provided with radial growth protrusions intended for half of them to cooperate with the ends of bimetallic bimetals and the other half with the pallets of magnetic trip circuits fitted to each line.
  • this rotary transmission bar is provided with successive protrusions intended to cooperate with the moving components of the respective magnetic and thermal motors.
  • the assembly which appears therein comprises a pivoting lever (1) interacting with a rotary bar (2) transmission, a torsion spring (3) being interposed interposed between the two.
  • the central part of the spring (3) is wound around a shaft (4) which serves as a rotation axis to the pivoting lever (1).
  • the ends of this shaft (4) are fixed relative to the housing of the electrical apparatus in which is integrated the trigger device of the invention.
  • the bar (2) has protrusions of two types, unchanging protuberances (5) intended to cooperate with the pallets of magnetic subassemblies, and planar surface protuberances (6) which are intended to interact with the free ends of bimetals. thermal.
  • these growths (5) and (6) also visible in Figures 2 to 4 , are actuated either by the pallet of a magnetic subassembly or by a bimetallic strip, the bar (2) pivots against the branch (7) of the torsion spring (3).
  • An outgrowth (8) (see in particular figures 3 and 4 ) secured to said bar (2) cooperates with the lever (1), so as to block it by pressing on the lever (1) in the vicinity of a slot or window (9) when the electrical apparatus is in normal operation .
  • the lever (1) then releases the trigger (12) (see figures 5 and 6 ), a lug (11) is also inserted in the window (9) in the initialized position.
  • the trigger (12) tends to swing in a reverse rotation of that of the lever (1) in particular under the effect of the main spring of the lock, causing the tilting of the latter and the triggering of the electrical device.
  • the trigger (12) is free to rotate about a shaft (13) fixed relative to the housing (not shown). Similarly, the bar (2) pivots by means of a shaft (14) free to rotate in a fixed element relative to said housing. To avoid any inadvertent movement of the trigger (12), it is provided with a lug (11) which cooperates with the window (9) so that, in the initialised (reset) position, the rotation of the trigger (12) is prevented, or at least reduced to an amplitude which does not allow it not to tip the lock.
  • the figure 5 represents the lock in the reset position, during the reset of the lock, the control lever (16) being actuated fully in the direction of the arrow F.
  • the lower edge (17) of the trigger (12) acts on the protruding portion (15) of the lever (1) against the torsion spring (3), causing the lever (1) to rotate counterclockwise and allowing the bar (2) to rotate in the opposite direction, the lever (1) exerting an action against the branch (10) of said spring (3) while the other branch (7) causes the pivoting of the bar (2) in clockwise direction.
  • the lever (1) then pivots sufficiently so that the protrusion (8) can resume its rearmed position during the concomitant rotation of the bar (2) and when the action stops on the handle (16), and therefore of the ridge (17) on the protruding part (15), the lever (1) biased by the spring (3) which restores the stored energy rotates in the opposite direction and comes to bear on said protrusion (8) (see in figure 7 ).
  • the lug (11) is inserted into the window (9) during the rotation in the trigonometric direction of the lever (1) under the action of the lever (16), and remains there when the lever (1) returns to the initialized position when the handle (16) is released.
  • the locking of the lever (1), the bar (2) and the trigger (12) in these positions is then performed again, and the actual reset.
  • the figure 6 represents on the contrary the triggered lock, that is to say that the handle (16) is in an intermediate position signaling the triggering.
  • the trigger (12) has turned counterclockwise about the shaft (13), the lug (11) released by the lever (1) for the tilting of the lock under the effect of the main spring, said lever (1) being biased towards the bar (2) due to the thrust on the tab (18) by the trigger (12).
  • the triggering device of the The invention makes it possible, with greater reliability, to switch the lock in case of overcurrent or overload on one of the lines, and reset the assembly by manipulation of the control lever (16).

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Description

La présente invention a trait à un dispositif de déclenchement mécanique pour appareil électrique de coupure d'au moins une ligne électrique, comportant classiquement un contact fixe et un contact mobile par ligne.The present invention relates to a mechanical tripping device for electrical apparatus for cutting off at least one electrical line, conventionally comprising a fixed contact and a mobile contact per line.

Traditionnellement ces appareils comportent par ailleurs un organe de manoeuvre déplaçable manuellement, et mobile entre deux positions stables correspondant respectivement à l'ouverture et à la fermeture des contacts. En fait, il existe même une troisième position stable, située entre les deux premières, marquant une position intermédiaire correspondant à l'ouverture des contacts résultant du basculement de la serrure suite à une surintensité due à une surcharge ou à un court-circuit. Le déplacement de la manette de cette position intermédiaire en direction de la position d'ouverture et au delà de cette dernière en une position dite reset permet le réarmement du dispositif de déclenchement, c'est à dire la réinitialisation de l'appareil en position fonctionnelle.Traditionally, these devices also comprise a maneuvering member movable manually and movable between two stable positions respectively corresponding to the opening and closing of the contacts. In fact, there is even a third stable position, located between the first two, marking an intermediate position corresponding to the opening of the contacts resulting from the tilting of the lock following overcurrent due to overload or short circuit. The movement of the lever of this intermediate position towards the open position and beyond the latter in a reset position allows the reset of the trigger device, ie the reset of the device in the operative position .

Le document FR 2 783 349 décrit un dispositif selon le préambule de la revendication 1.The document FR 2 783 349 describes a device according to the preamble of claim 1.

L'invention concerne en fait plus particulièrement les appareils électriques dits à boîtier moulé.The invention relates more particularly to so-called electrical appliances with molded housing.

Ceux-ci présentent par ailleurs une serrure mécanique comportant un déclencheur et une genouillère transmettant le déplacement de l'organe de manoeuvre au(x) contact(s) mobile(s), ledit déclencheur étant apte à pivoter par rapport à la genouillère notamment en vue de provoquer son basculement et l'ouverture subséquente des contacts. Enfin, ce type d'appareil comporte des moyens de rappel à l'encontre desquels le(s) contact(s) mobile(s) est(sont) déplacé(s) par l'organe de manoeuvre en position de fermeture, et qui le(les) rappelle(nt) en position ouverte sous l'effet du pivotement du déclencheur.They also have a mechanical lock comprising a trigger and a toggle joint transmitting the movement of the actuator member (x) contact (s) movable (s), said trigger being pivotable relative to the toggle joint including to cause it to tilt and the subsequent opening of the contacts. Finally, this type of device comprises return means against which the (s) movable contact (s) is (are) moved (s) by the operating member in the closed position, and the (them) recalls (s) in open position under the effect of the pivoting of the release.

Dans l'hypothèse de l'invention, l'appareil électrique concerné est dans la plupart des cas un appareil multipolaire et, pour les calibres concernés, chaque ligne est munie d'un bilame thermique et d'un moteur magnétique réagissant respectivement aux surcharges et aux surintensités dans la ligne, chacun pouvant provoquer le déclenchement du produit si ces hypothèses surviennent. L'existence d'une unique serrure de déclenchement pour gérer le cas échéant plusieurs lignes, et la nécessité d'une transmission égale de l'information apparaissant en cas de problème sur une ligne, quel que soit le positionnement de ladite ligne par rapport à la serrure suppose l'existence d'un mécanisme précis, d'autant plus qu'il est également en charge du réarmement de l'ensemble, ce qui peut conduire à des conceptions relativement complexes. Les configurations existantes, du fait du haut niveau de fiabilité requis, n'ont pas toujours le degré de compatibilité requis avec les logiques économiques notamment propres à la phase d'industrialisation.In the hypothesis of the invention, the electrical apparatus concerned is in most cases a multipole apparatus and, for the calibres concerned, each line is provided with a bimetallic strip and a magnetic motor reacting respectively to the overloads and over-currents in the line, each of which can trigger the product if these assumptions occur. The existence of a single trigger lock to manage if necessary several lines, and the need for an equal transmission of information appearing in case of problem on a line, regardless of the positioning of said line with respect to the lock assumes the existence of a precise mechanism, especially since it is also in charge of the rearming of the assembly, which can lead to relatively complex designs. The existing configurations, because of the high level of reliability required, do not always have the degree of compatibility required with the economic logic particularly specific to the industrialization phase.

L'un des buts de cette invention est donc de simplifier ledit mécanisme, et notamment de mutualiser dans la mesure du possible certains des composants, pour l'obtention d'un gain économique résultant autant de la réduction du nombre de composants que de la simplification du montage.One of the aims of this invention is thus to simplify said mechanism, and in particular to pool as far as possible some of the components, to obtain an economic gain resulting as much from the reduction in the number of components as simplification of the assembly.

Pour satisfaire à cet objectif, ainsi qu'à d'autres qui apparaîtront à la lecture de cette description, le dispositif de déclenchement de l'invention se caractérise notamment en ce qu'il comporte :

  • un levier pivotant interposé entre le déclencheur et
  • un barreau de transmission rotatif répercutant les déplacements de sous-ensembles magnétique et thermique en cas de surcharge / surintensité dans la ou les lignes,
  • un ressort de torsion placé entre ledit levier et le barreau de transmission, la première des extrémités du ressort s'appliquant au levier, la seconde extrémité sollicitant le barreau de transmission vers une position réarmée selon laquelle une excroissance solidaire du barreau de transmission est positionnée de manière à s'appuyer sur le levier au voisinage d'un orifice de celui-ci, la rotation du barreau en cas de surintensité provoquant le déplacement de ladite excroissance devant l'orifice et le basculement du levier sous l'effet du ressort, ledit basculement provoquant la libération d'une patte solidaire du déclencheur et insérée dans une fenêtre du levier lorsqu'il est en position réarmée, libérant le déclencheur qui pivote en vue de faire déclencher l'appareil.
In order to satisfy this objective, as well as others which will appear on reading this description, the triggering device of the invention is characterized in particular by the fact that it comprises:
  • a pivoting lever interposed between the trigger and
  • a rotational transmission rod that echoes magnetic and thermal subassembly displacements in the event of overload / overcurrent in the line or lines,
  • a torsion spring placed between said lever and the transmission bar, the first of the ends of the spring applying to the lever, the second end urging the transmission bar to a rearmed position in which an integral protrusion of the transmission bar is positioned so as to rest on the lever in the vicinity of an orifice thereof, the rotation of the bar in case of overcurrent causing the displacement of said protuberance in front of the orifice and the tilting of the lever under the effect of the spring, said tilting causing the release of a tab integral with the release and inserted into a window of the lever when in the reset position, releasing the trigger which pivots to trigger the device.

Une partie saillante du levier coopérant avec une arête du déclencheur lors du réarmement entraine le pivotement en sens inverse du déclencheur, ladite arête entrainant le pivotement du levier à l'encontre du ressort par appui sur ladite partie saillante, le ressort sollicitant à son tour le barreau de transmission en position réarmée.A protruding part of the lever cooperating with an edge of the trigger during the reset causes pivoting in the opposite direction of the trigger, said edge causing the pivoting of the lever against the spring by pressing on said projecting part, the spring in turn soliciting the transmission bar in the rearm position.

D'une manière avantageuse, selon l'invention, un unique ressort est donc utilisé pour qu'au moment du réarmement, il soit possible de remettre en position initiale réarmée le levier pivotant et le barreau de transmission rotatif. A cet effet, ces composants sont conçus de telle sorte qu'ils présentent des moyens de positionnement et des jeux relatifs permettant une action mécanique de libération en vue d'un déclenchement dans un sens, de réarmement dans l'autre sens, par des rotation simultanées ou successives impliquant dans certaines phases la libération de l'énergie de l'unique ressort de torsion et dans d'autres phases l'accumulation de cette énergie. Le ressort est donc placé, dans la chaîne cinématique qu'il constitue avec le levier pivotant et le barreau de transmission, de telle sorte que les actions séquentielles sur ses branches aient un effet, selon la phase de fonctionnement, sur l'un ou l'autre de ces composants ou sur les deux à la fois.Advantageously, according to the invention, a single spring is used so that at the time of rearming, it is possible to reset the pivoting lever and the rotary transmission bar. For this purpose, these components are designed so that they have positioning means and relative games allowing a mechanical release action for a trigger in one direction, resetting in the other direction, by rotation simultaneous or successive involving in certain phases the release of the energy of the single torsion spring and in other phases the accumulation of this energy. The spring is thus placed in the kinematic chain that it constitutes with the pivoting lever and the transmission bar, so that the sequential actions on its branches have an effect, depending on the operating phase, on one or the other. other of these components or both at the same time.

Selon une possibilité, le ressort de torsion comporte une portion centrale spiralée enroulée autour de l'arbre de pivotement du levier.According to one possibility, the torsion spring comprises a spiral central portion wound around the pivot shaft of the lever.

De préférence, selon l'invention, l'orifice avec lequel l'excroissance coopère et la fenêtre du levier dans laquelle la patte du déclencheur s'insère sont un seul et même orifice.Preferably, according to the invention, the orifice with which the protrusion cooperates and the window of the lever in which the tab of the trigger is inserted are one and the same orifice.

Selon une configuration possible, le barreau de transmission rotatif répercutant les déplacements des sous-ensembles magnétique et thermique est libre en rotation autour d'une tige fixe par rapport au boîtier de l'appareil, ledit barreau étant disposé transversalement audit boîtier et muni d'excroissances d'allure radiale destinées pour la moitié d'entre elles à coopérer avec les extrémités de bilames thermiques et pour l'autre moitié avec les palettes de circuits magnétiques de déclenchement équipant chaque ligne.According to one possible configuration, the rotary transmission rod that reflects the displacements of the magnetic and thermal subassemblies is free to rotate about a fixed rod relative to the housing of the apparatus, said bar being disposed transversely to said housing and provided with radial growth protrusions intended for half of them to cooperate with the ends of bimetallic bimetals and the other half with the pallets of magnetic trip circuits fitted to each line.

En d'autres termes, ce barreau de transmission rotatif est doté d'excroissances successives destinées à coopérer avec les composants mobiles des moteurs respectivement magnétique et thermique.In other words, this rotary transmission bar is provided with successive protrusions intended to cooperate with the moving components of the respective magnetic and thermal motors.

L'invention va à présent être décrite plus en détail, en référence aux figures annexées, pour lesquelles :

  • la figure 1 représente en vue perspective l'ensemble constitué par le levier pivotant, le barreau de transmission rotatif et le ressort de torsion agissant sur eux ;
  • les figures 2 et 3 montrent le même ensemble, sous deux angles différents ;
  • la figure 4 est une vue en perspective du barreau de transmission ; et
  • les figures 5 à 7 représentent trois vues en coupe du dispositif de déclenchement de l'invention en position respectivement reset pendant le réarmement du dispositif électrique, en position intermédiaire déclenchée suite à un problème sur une ligne, et en position d'ouverture des contacts serrure réarmée.
The invention will now be described in more detail, with reference to the appended figures, for which:
  • the figure 1 represents in perspective view the assembly constituted by the pivoting lever, the rotary transmission bar and the torsion spring acting on them;
  • the Figures 2 and 3 show the same set, from two different angles;
  • the figure 4 is a perspective view of the transmission bar; and
  • the Figures 5 to 7 represent three sectional views of the triggering device of the invention respectively reset position during the reset of the electrical device, intermediate position triggered following a problem on a line, and in the open position of the contacts rearmed lock.

En référence aux figures 1 à 4, l'ensemble qui y apparaît comporte un levier pivotant (1) interagissant avec un barreau rotatif (2) de transmission, un ressort de torsion (3) étant notamment interposé entre les deux. La partie centrale du ressort (3) est enroulée autour d'un arbre (4) qui sert d'axe de rotation au levier pivotant (1). Les extrémités de cet arbre (4) sont fixes par rapport au boîtier de l'appareil électrique dans lequel est intégré le dispositif de déclenchement de l'invention.With reference to Figures 1 to 4 , the assembly which appears therein comprises a pivoting lever (1) interacting with a rotary bar (2) transmission, a torsion spring (3) being interposed interposed between the two. The central part of the spring (3) is wound around a shaft (4) which serves as a rotation axis to the pivoting lever (1). The ends of this shaft (4) are fixed relative to the housing of the electrical apparatus in which is integrated the trigger device of the invention.

Le barreau (2) comporte des excroissances de deux types, des excroissances unciformes (5) destinées à coopérer avec les palettes de sous-ensembles magnétiques, et des excroissances à surface plane (6) qui sont prévues pour interagir avec les extrémités libres de bilames thermiques. Lorsque ces excroissances (5) et (6), également visibles en figures 2 à 4, sont actionnées soit par la palette d'un sous-ensemble magnétique, soit par un bilame, le barreau (2) pivote à l'encontre de la branche (7) du ressort de torsion (3). Une excroissance (8) (voir notamment en figures 3 et 4) solidaire dudit barreau (2) coopère avec le levier (1), de manière à le bloquer par appui sur le levier (1) au voisinage d'une fente ou fenêtre (9) lorsque l'appareil électrique est en cours de fonctionnement normal. Lorsque le barreau (2) pivote, sous l'effet du déplacement d'un bilame ou d'une palette, l'excroissance (8) glisse sur le levier (1) jusqu'à la fenêtre (9) dans laquelle elle s'insère, provoquant la libération du levier (1), qui pivote à son tour en direction du barreau (2) sous l'effet de la seconde branche (10) du ressort de torsion (3).The bar (2) has protrusions of two types, unchanging protuberances (5) intended to cooperate with the pallets of magnetic subassemblies, and planar surface protuberances (6) which are intended to interact with the free ends of bimetals. thermal. When these growths (5) and (6), also visible in Figures 2 to 4 , are actuated either by the pallet of a magnetic subassembly or by a bimetallic strip, the bar (2) pivots against the branch (7) of the torsion spring (3). An outgrowth (8) (see in particular figures 3 and 4 ) secured to said bar (2) cooperates with the lever (1), so as to block it by pressing on the lever (1) in the vicinity of a slot or window (9) when the electrical apparatus is in normal operation . When the bar (2) pivots, under the effect of the movement of a bimetallic strip or pallet, the protrusion (8) slides on the lever (1) to the window (9) in which it s' inserts, causing the release of the lever (1), which in turn rotates towards the bar (2) under the effect of the second leg (10) of the torsion spring (3).

Le levier (1) libère alors le déclencheur (12) (voir en figures 5 et 6), dont une patte (11) est également insérée dans la fenêtre (9) en position initialisée. Le déclencheur (12) a tendance à basculer selon une rotation inverse de celle du levier (1) notamment sous l'effet du ressort principal de la serrure, provoquant le basculement de cette dernière et le déclenchement de l'appareil électrique.The lever (1) then releases the trigger (12) (see figures 5 and 6 ), a lug (11) is also inserted in the window (9) in the initialized position. The trigger (12) tends to swing in a reverse rotation of that of the lever (1) in particular under the effect of the main spring of the lock, causing the tilting of the latter and the triggering of the electrical device.

Le déclencheur (12) est libre en rotation autour d'un arbre (13) fixe par rapport au boîtier (non représenté). De même, le barreau (2) pivote au moyen d'un arbre (14) libre en rotation dans un élément fixe par rapport audit boîtier. Pour éviter tout mouvement intempestif du déclencheur (12), il est muni d'une patte (11) qui coopère avec la fenêtre (9) de sorte que, en position initialisée (réarmée), la rotation du déclencheur (12) soit empêchée, ou à tout le moins réduite à une amplitude ne lui permettant pas de faire basculer la serrure. La figure 5 représente la serrure en position reset, au cours du réarmement de la serrure, la manette de commande (16) étant actionnée à fond dans la direction de la flèche F. Dans ce cas, l'arête inférieure (17) du déclencheur (12) exerce une action sur la partie saillante (15) du levier (1) à l'encontre du ressort de torsion (3), faisant pivoter le levier (1) en sens trigonométrique et permettant au barreau (2) de tourner en sens inverse, le levier (1) exerçant une action à l'encontre de la branche (10) dudit ressort (3) alors que l'autre branche (7) entraine le pivotement du barreau (2) en sens horaire.The trigger (12) is free to rotate about a shaft (13) fixed relative to the housing (not shown). Similarly, the bar (2) pivots by means of a shaft (14) free to rotate in a fixed element relative to said housing. To avoid any inadvertent movement of the trigger (12), it is provided with a lug (11) which cooperates with the window (9) so that, in the initialised (reset) position, the rotation of the trigger (12) is prevented, or at least reduced to an amplitude which does not allow it not to tip the lock. The figure 5 represents the lock in the reset position, during the reset of the lock, the control lever (16) being actuated fully in the direction of the arrow F. In this case, the lower edge (17) of the trigger (12) acts on the protruding portion (15) of the lever (1) against the torsion spring (3), causing the lever (1) to rotate counterclockwise and allowing the bar (2) to rotate in the opposite direction, the lever (1) exerting an action against the branch (10) of said spring (3) while the other branch (7) causes the pivoting of the bar (2) in clockwise direction.

Le levier (1) pivote alors suffisamment pour que l'excroissance (8) puisse reprendre sa position réarmée pendant la rotation concomitante du barreau (2) et qu'à l'arrêt de l'action sur la manette (16), et donc de l'arête (17) sur la partie saillante (15), le levier (1) sollicité par le ressort (3) qui restitue l'énergie emmagasinée tourne en sens inverse et vienne s'appuyer sur ladite excroissance (8) (voir en figure 7). Dans le même temps, la patte (11) s'insère dans la fenêtre (9) pendant la rotation en sens trigonométrique du levier (1) sous l'action de la manette (16), et y reste lorsque le levier (1) revient en position initialisée lorsque la manette (16) est relâchée. Le verrouillage du levier (1), du barreau (2) et du déclencheur (12) dans ces positions est dès lors à nouveau réalisé, et le réarmement effectif.The lever (1) then pivots sufficiently so that the protrusion (8) can resume its rearmed position during the concomitant rotation of the bar (2) and when the action stops on the handle (16), and therefore of the ridge (17) on the protruding part (15), the lever (1) biased by the spring (3) which restores the stored energy rotates in the opposite direction and comes to bear on said protrusion (8) (see in figure 7 ). At the same time, the lug (11) is inserted into the window (9) during the rotation in the trigonometric direction of the lever (1) under the action of the lever (16), and remains there when the lever (1) returns to the initialized position when the handle (16) is released. The locking of the lever (1), the bar (2) and the trigger (12) in these positions is then performed again, and the actual reset.

La figure 6 représente au contraire la serrure déclenchée, c'est à dire que la manette (16) est dans une position intermédiaire signalant le déclenchement. Le déclencheur (12) a basculé en sens trigonométrique autour de l'arbre (13), la patte (11) libérée par le levier (1) permettant le basculement de la serrure sous l'effet du ressort principal, ledit levier (1) étant polarisé vers le barreau (2) du fait de la poussée sur la patte (18) par le déclencheur (12).The figure 6 represents on the contrary the triggered lock, that is to say that the handle (16) is in an intermediate position signaling the triggering. The trigger (12) has turned counterclockwise about the shaft (13), the lug (11) released by the lever (1) for the tilting of the lock under the effect of the main spring, said lever (1) being biased towards the bar (2) due to the thrust on the tab (18) by the trigger (12).

Avec un seul ressort de torsion (3), du fait de la conception particulière des différentes pièces intervenant dans les liaisons mécaniques (plot (8), pattes (11) et (15), fenêtre (9)) le dispositif de déclenchement de l'invention permet, avec une fiabilité accrue, de faire basculer la serrure en cas de surintensité ou de surcharge sur l'une des lignes, et le réarmement de l'ensemble par manipulation de la manette de commande (16).With a single torsion spring (3), because of the particular design of the various parts involved in the mechanical connections (stud (8), tabs (11) and (15), window (9)) the triggering device of the The invention makes it possible, with greater reliability, to switch the lock in case of overcurrent or overload on one of the lines, and reset the assembly by manipulation of the control lever (16).

Claims (5)

  1. Mechanical tripping device for electrical switching equipment of at least one electrical line, the said equipment containing:
    - one fixed contact and one moving contact by line;
    - an actuator mechanism (16) manually movable and mobile between two stable positions corresponding respectively to the opening and closing of the said contacts, the said actuator (16) having a third stable position located between the first two corresponding to the opening of the contacts following a problem occurred on a line, the movement from this intermediate position towards the open position allowing the rearming of the tripping device;
    - a mechanical lock having a trigger (12) and a toggle transferring the movement of the actuator mechanism to the moving contact(s), the said trigger (12) being able to pivot in relation to the toggle notably in order to provoke its switching and the opening of the contacts; and
    - a return means with the moving contact(s) shifted counter thereto by the actuator mechanism (16) in the closed position, and which returns it (them) to the open position under the effect of the trigger (12) pivoting;
    - a pivoting lever (1) placed between the trigger (12); and
    - a rotary transmission bar (2) reproducing the movements of the magnetic and thermal subassemblies in case of an over-current in the line or lines,
    characterized in that the tripping mechanism contains:
    - a torsion spring (3) placed between the said lever (1) and the transmission bar (2), the first end (10) of the spring (3) being applied to the lever, the second end (7) pushing the transmission bar (2) towards a rearmed position based on which a protrusion (8) rigidly connected to the transmission bar (2) is positioned in such a manner as to press on the lever (1) in the area of an orifice (9) in that lever, the rotation of the bar (2) in case of over-current provoking the movement of the said protrusion (8) in front of the orifice (9) and the switching of the lever (1) under the effect of the spring (3), the said switching provoking the release of a lug (11) rigidly connected to the trigger (12) and inserted in a window of the lever (1) when it is in the rearmed position, liberating the trigger (12) which pivots in order to trip the equipment.
  2. Mechanical tripping device for electrical switching equipment of at least one electrical line according to the preceding claim, characterized in that the projecting part (15) of the lever (1) works in conjunction with an edge (17) on the trigger (12) during the rearmament provoking the pivoting in the opposite sense to the trigger (12), the said edge (17) driving the pivoting in the opposite sense to the lever (1) against the spring (3) by pressing on the said projecting part (15), the spring (3) pushing in turn the transmission bar (2) in order to return it to the rearmed position by rotating it.
  3. Mechanical tripping device for electrical switching equipment of at least one electrical line according to one of claims 1 and 2, characterized in that the torsion spring (3) has a central spiralled section wrapped around the pivoting shaft (4) of the lever (1).
  4. Mechanical tripping device for electrical switching equipment of at least one electrical line according to one of the preceding claims, characterized in that the orifice with which the protrusion (8) works and the window of the lever (1) in which the lug (11) of the trigger (12) inserts are one and the same orifice (9).
  5. Mechanical tripping device for electrical switching equipment of at least one electrical line according to one of the preceding claims, characterized in that the rotary transmission bar (2) that reproduces the movements of the magnetic and thermal subassemblies is free to rotate around a pin (14) fixed in relation to the equipment box, the said bar (2) being placed transversally to the said box and having radial protrusions (5, 6), half of them (6) intended to work in conjunction with the ends of thermal bi-metal strips and the other half (5) with the magnetic circuits equipping each line.
EP09805720.1A 2008-12-18 2009-12-17 Mechanical trip device for a line switchgear Active EP2368256B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0858779A FR2940511B1 (en) 2008-12-18 2008-12-18 DEVICE FOR MECHANICAL RELEASE FOR ELETRIC LINE BREAKER APPARATUS.
PCT/FR2009/052582 WO2010076512A1 (en) 2008-12-18 2009-12-17 Mechanical trip device for a line switchgear

Publications (2)

Publication Number Publication Date
EP2368256A1 EP2368256A1 (en) 2011-09-28
EP2368256B1 true EP2368256B1 (en) 2013-10-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09805720.1A Active EP2368256B1 (en) 2008-12-18 2009-12-17 Mechanical trip device for a line switchgear

Country Status (6)

Country Link
EP (1) EP2368256B1 (en)
JP (1) JP5581334B2 (en)
CN (1) CN102246255B (en)
BR (1) BRPI0918123A2 (en)
FR (1) FR2940511B1 (en)
WO (1) WO2010076512A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2986366B1 (en) * 2012-01-31 2015-01-09 Hager Electro Sas ELECTRICAL LINE PROTECTION APPARATUS WITH DECAL LOCK.
US9275806B2 (en) * 2014-06-20 2016-03-01 Eaton Corporation Electrical switching apparatus, and trip assembly and lever member therefor
CN104332364B (en) * 2014-11-14 2016-06-29 德力西电气有限公司 A kind of breaker tripping mechanism
EP3048631B1 (en) * 2015-01-20 2017-08-16 Siemens Aktiengesellschaft Method for operating a circuit breaker and circuit breaker
CN106935451B (en) * 2015-12-30 2019-04-30 三信国际电器上海有限公司 A kind of closing device and the residual current action breaker with the device
CN107845550B (en) * 2017-11-10 2020-04-17 浙江正泰电器股份有限公司 Tripping reset structure of circuit breaker and traction rod
FR3083366B1 (en) * 2018-06-29 2020-06-12 Socomec MANUAL CONTROL DEVICE FOR A REMOTE HANDLING SOURCE INVERTER
FR3087044B1 (en) * 2018-10-03 2021-01-01 Schneider Electric Ind Sas LOCKING MODULE OF AN ARMING SYSTEM FOR ELECTRICAL DEVICE SWITCH

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1014754B (en) * 1985-11-07 1991-11-13 西屋电气公司 Circuit breaker with a trip mechanism having an intermediate latch lever
JP2514686B2 (en) * 1988-03-28 1996-07-10 松下電工株式会社 Circuit breaker
FR2687249B1 (en) * 1992-02-07 1994-04-01 Merlin Gerin CONTROL MECHANISM OF A MOLDED BOX CIRCUIT BREAKER.
FR2783349B1 (en) * 1998-09-11 2000-11-24 Schneider Electric Ind Sa DEVICE LIMITING THE STROKE OF A CONTROL HANDLE OF AN ELECTRICAL SWITCHING APPARATUS, IN THE EVENT OF WELDING OF THE CONTACTS
JP3359575B2 (en) * 1998-09-28 2002-12-24 寺崎電気産業株式会社 Circuit breaker trip device

Also Published As

Publication number Publication date
JP2012513081A (en) 2012-06-07
CN102246255A (en) 2011-11-16
FR2940511A1 (en) 2010-06-25
EP2368256A1 (en) 2011-09-28
BRPI0918123A2 (en) 2015-11-24
CN102246255B (en) 2014-04-09
FR2940511B1 (en) 2010-12-17
WO2010076512A1 (en) 2010-07-08
JP5581334B2 (en) 2014-08-27

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