EP1505619A1 - Ameliorated lock mechanism for circuit breakers and circuit breaker incorporating such lock - Google Patents
Ameliorated lock mechanism for circuit breakers and circuit breaker incorporating such lock Download PDFInfo
- Publication number
- EP1505619A1 EP1505619A1 EP04360064A EP04360064A EP1505619A1 EP 1505619 A1 EP1505619 A1 EP 1505619A1 EP 04360064 A EP04360064 A EP 04360064A EP 04360064 A EP04360064 A EP 04360064A EP 1505619 A1 EP1505619 A1 EP 1505619A1
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- EP
- European Patent Office
- Prior art keywords
- lock mechanism
- contact
- electrical
- movable
- trigger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
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- 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
- H01H71/529—Manual reset mechanisms which may be also used for manual release actuated by lever comprising an electroresponsive element forming part of the transmission chain between handle and contact arm
Definitions
- the present invention relates to the technical field general electrical appliances and more particularly to in the field of modular devices, of the circuit-breaker type for a line protection or switches, for protection of people.
- the present invention relates in particular to a mechanism for lock for magneto-thermal circuit breaker or for switch or the like, in particular for circuit-breakers phase. It also relates to circuit breakers equipped with this mechanism.
- Line protection circuit breakers include, in a housing, an electrical circuit extending between two terminals and include a thermal trip bimetallic strip for the protection of the line against overloads and an organ electromagnetic circuit having a coil with a plunger core associated with a striker, to ensure, in case of short circuit, disjunction by opening a movable contact cooperating with one or more fixed contacts.
- Circuit breakers phase and neutral include, in addition to the phase stage such as described, a neutral stage with fixed and movable contacts, the contact mobile device being operated in conjunction with the moving contact of phase.
- a lock mechanism of the knee type, usually comprising a lever-type control member, manually operable and operating a link tending to push back a pivoting contact carrier which carries one or several moving contacts to bring them each into pressure contact against a fixed contact, to a position in which the return to opposite direction, towards the contact opening, is normally prevented by a ratchet prohibiting the link, in kneepad support on the contact holder, to escape and release this one.
- Manual opening takes place in actuating the lever in the opposite direction.
- the disjunction is usually caused by action of the bimetallic strip or striker of the coil against a lever of triggering so as to cause the release of the ratchet and therefore the exhaust rod, thus opening the electrical contact.
- a lock mechanism actuating at least one mobile electrical contact, moving relative to a fixed electrical contact between two stable positions respectively corresponding to an opening and to a closure of an electrical circuit, said lock mechanism comprising a bimetallic thermal trip.
- the object of the present invention is therefore to overcome these disadvantages and realize a circuit breaker whose tripping times are not affected by moisture problems, deformation of the parts functional.
- the bimetallic strip (3) is set on a carcass, on which is mounted the movable electrical contact (1).
- the bimetallic strip can be integrated in the lock mechanism without as much increase the size. This releases a volume in the circuit breaker for other features.
- the installation of bimetallic directly on the lock mechanism also simplifies the parts constituents of a circuit breaker and in particular to reduce the number of various components.
- Such a configuration also makes it possible to maintain the same threshold of tripping for bimetal with thermal tripping independently any deformation or relative displacement of parts constituent of the lock mechanism. No intervention during the lifetime of an appliance incorporating the lock mechanism according to the invention is necessary to readjust the triggering threshold of the bimetallic thermal trip.
- the carcass is metallic or a plastic.
- the lock mechanism comprises a trigger pivotally mounted on the frame and able to actuate the contact mobile electric actuator, the trigger comprising a drive member cooperating with the free end of the bimetallic strip and capable of rotating said trigger under the action of the thermal trip bimetal.
- the trigger and the drive member are for example made in one piece of plastic material.
- the lock mechanism comprises race retraction means comprising a pivoting mounting of the contact mobile on the carcass, and this against an elastic return means generating a displacement of said movable contact resiliently biased by with respect to said carcass during the establishment of the electrical connection with the fixed contact.
- the invention also relates to a line protection device electric or personal protection device incorporating a lock as presented above.
- lock mechanism shown in view exploded in Figure 1 is intended to be integrated into an electrical appliance, for example a circuit breaker.
- Lock mechanism actuates a contact mobile electric motor (1) intended to bear on a fixed electrical contact (2) represented for example in FIGS. 4 to 7.
- the lock mechanism also comprises a bimetallic strip (3) thermal tripping, integral with a constituent element of said mechanism lock.
- the lock mechanism is for example constituted by a flange lower part (4) surmounted by an upper flange (5) on which the bimetal is fixed (3).
- the latter is for example fixed on the upper flange (5) by one or several soldering points.
- the lower (4) and upper (5) flanges, assembled by any known mechanical means, are made with electrically conductive materials for example copper type.
- the lower flange (4) is also provided with an axis (6) on which is pivoted a trigger (7).
- the latter is made of a material electrical insulation.
- the trigger (7) separates the contacts mobile (1) and fixed (2) in case of overcurrent thanks to its pivoting allowing it to cause the movable electrical contact (1).
- Moon ends of the trigger (7) is supported on the movable electrical contact (1) so as to rotate the latter and separate it from the fixed electrical contact (2).
- the movable electrical contact (1) is advantageously mounted in or on the metal carcass consisting of the lower flanges (4) and upper (5). This mounting is obtained by means of a pivot axis (1 a) engaged in corresponding openings (5 a) even in the lower flanges (4) and higher (5).
- a return spring (8) is for example mounted with its ends between the movable contact (1) and the lower flange.
- the movable contact (1) can therefore pivot with respect to the carcass on or in which it is mounted.
- the trigger (7) comprises a drive member (9) capable of rotate said trigger (7) under the action of the bimetallic strip (3) thermal trip.
- the drive member (9) is therefore at one ends of the trigger (7) and extends substantially orthogonally to the direction of longitudinal extension of said trigger (7).
- the organ for training (9) has a clearance (10) traversed by the contact movable electric (1) and free end of the bimetallic strip (3). This release (10) is delimited by a first support edge (7a) and a second support edge (9a).
- the first support edge (7a) is intended to come into contact with the contact mobile (1) and drive the latter to obtain the opening of the link electric.
- the second support edge (9a) provides support for the bimetallic strip (3), which, by deforming, drives the drive member (9) and by therefore also a trigger (7) ready to release the electrical contact fixed (2) by pivoting the movable electrical contact (1) in the same way than previously described.
- FIG. 4 shows a closed electrical connection between the contact movable (1) and fixed (2) electrical and corresponding positioning of the lock mechanism.
- the bimetallic strip (3) is in its inactive position distorted.
- the bimetallic strip (3) deformed for example as a result of a overcurrent, moves the drive member (9), and therefore the trigger (7) so as to separate the movable electrical contacts (1) and fixed (2).
- the lock mechanism also comprises catch-up means race wear.
- the catch-up means of the wear race comprise a pivotal mounting of the movable contact (1) on the carcass. This montage pivoting is effected by means of an elastic return means, against a restoring force biasing the movable contact (1) with respect to the carcass and generating a displacement of said movable contact (1) with respect to the carcass, when establishing the electrical connection with the fixed contact (2).
- the circuit breaker according to the invention also comprises an element actuator (11), movable between an active stable position (FIG. 4) and an inactive stable position ( Figure 5).
- the actuating member (11) is automatically returned to its inactive position when the trigger (7) as shown in FIG.
- the trigger (7) and the drive member (9) are for example made in one piece, for example plastic.
- the circuit breaker according to the invention shown in FIGS. an outer housing (12) of plastic material and fastening means (13) on a support of the rail type (not shown).
- the circuit breaker comprises the actuator (11), movable between two stable positions, the active one shown in Figure 4 and the other inactive shown in Figure 5, for manually controlling the activation of said circuit breaker.
- the outer housing (12) comprises for example two half-shells. of the assembly means of the two half-shells are also provided.
- the circuit breaker comprises a magnetic subassembly (14) having a striker (15) which separates the movable contact (1) from the fixed contact (2).
- the magnetic subassembly (14) is associated with the fixed electrical contact (2) via an induction coil (16).
- the circuit breaker according to the invention also comprises a mechanism Lock as described above.
- the latter is represented by example in Figures 6 and 7 in two positions respectively corresponding separation and closure of the fixed (2) and movable electrical contacts (1).
- the mechanism of lock In the first position shown in Figure 6, the mechanism of lock is tilted to an inactive position following deformation of the bimetal (3) or a thrust on the trigger (7) by the firing pin (15).
- the bimetallic strip (3) is shown for clarity in its two positions, one deformed, the other undistorted, in FIGS. 7.
- the circuit breaker according to the invention also comprises two terminals of connection (17), the first of which is directly connected to the induction coil (16) at one of its ends and the second of which is directly connected via a connecting wire (18) to the bimetallic strip (3).
- the connecting rod (19) is U-shaped, having a first branch (19a) is engaged in the control member (11), and this eccentrically by relative to the pivot axis (11a) of said control member (11), and a second branch (19b) is engaged in a light (4a) of the flange lower (4).
- the second branch (19b) can move in a light (4a), especially during the pivoting of the control member (11).
- the light (4a) also has an inclined part (4b) in which the second branch (19b), thanks to a ratchet (7b) formed by the other trigger end (7).
- the connecting wire (18) consists for example of a conductive braid.
- the lock mechanism, and therefore the circuit breaker according to the invention has the significant advantage that bimetallic strip (3) thermal tripping is associated with only one conductive braid on connecting to a connection terminal (not shown), the other electrical connection by means of the metal carcass constituted by the lower flanges (4) and upper (5) and realizing the contact carrier.
- the variations dimensions or shapes related to moisture, wear or dilations / contractions of certain parts are thus absorbed, and the threshold of triggering of bimetallic strip (3) remains unchanged.
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- Breakers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
Description
La présente invention se rapporte au domaine technique général des appareils électriques et plus particulièrement au domaine des appareils modulaires, du type disjoncteurs pour une protection de ligne ou interrupteurs, pour une protection des personnes.The present invention relates to the technical field general electrical appliances and more particularly to in the field of modular devices, of the circuit-breaker type for a line protection or switches, for protection of people.
La présente invention a trait notamment à un mécanisme de serrure pour disjoncteur à disjonction magnéto-thermique ou pour interrupteur ou appareil analogue, notamment pour disjoncteur de phase. Elle a également trait aux disjoncteurs munis de ce mécanisme.The present invention relates in particular to a mechanism for lock for magneto-thermal circuit breaker or for switch or the like, in particular for circuit-breakers phase. It also relates to circuit breakers equipped with this mechanism.
Les disjoncteurs de protection de ligne comprennent, dans un boítier, un circuit électrique s'étendant entre deux bornes et comprennent un bilame de déclenchement thermique pour la protection de la ligne contre les surcharges et un organe électromagnétique de disjonction comportant une bobine avec un noyau plongeur associé à un percuteur, pour assurer, en cas de court-circuit, la disjonction par ouverture d'un contact mobile coopérant avec un ou plusieurs contacts fixes. Les disjoncteurs de phase et de neutre comprennent, outre l'étage de phase tel que décrit, un étage de neutre avec contacts fixe et mobile, le contact mobile de neutre étant actionné conjointement au contact mobile de phase. Line protection circuit breakers include, in a housing, an electrical circuit extending between two terminals and include a thermal trip bimetallic strip for the protection of the line against overloads and an organ electromagnetic circuit having a coil with a plunger core associated with a striker, to ensure, in case of short circuit, disjunction by opening a movable contact cooperating with one or more fixed contacts. Circuit breakers phase and neutral include, in addition to the phase stage such as described, a neutral stage with fixed and movable contacts, the contact mobile device being operated in conjunction with the moving contact of phase.
L'actionnement du contact mobile est généralement effectué par un mécanisme de serrure, du type genouillère, comprenant usuellement un organe de commande de type levier, actionnable manuellement et entraínant une biellette tendant à repousser un porte-contacts pivotant qui porte un ou plusieurs contacts mobiles pour les amener chacun en contact de pression contre un contact fixe, jusque dans une position dans laquelle le retour en sens inverse, vers l'ouverture de contact, est normalement empêché par un cliquet interdisant à la biellette, en appui de genouillère sur le porte-contacts, de s'échapper et de libérer celui-ci. L'ouverture manuelle s'effectue en actionnant le levier en sens contraire. La disjonction est généralement provoquée par action du bilame ou du percuteur de la bobine contre un levier de déclenchement de façon à provoquer la libération du cliquet et donc l'échappement de la biellette, ouvrant ainsi le contact électrique.The actuation of the moving contact is generally carried out by a lock mechanism, of the knee type, usually comprising a lever-type control member, manually operable and operating a link tending to push back a pivoting contact carrier which carries one or several moving contacts to bring them each into pressure contact against a fixed contact, to a position in which the return to opposite direction, towards the contact opening, is normally prevented by a ratchet prohibiting the link, in kneepad support on the contact holder, to escape and release this one. Manual opening takes place in actuating the lever in the opposite direction. The disjunction is usually caused by action of the bimetallic strip or striker of the coil against a lever of triggering so as to cause the release of the ratchet and therefore the exhaust rod, thus opening the electrical contact.
Un tel mécanisme de serrure est décrit par exemple dans le brevet européen EP-0 570 647 B1.Such a lock mechanism is described for example in the patent EP-0 570 647 B1.
On connaít par exemple un mécanisme de serrure actionnant au moins un contact électrique mobile, se déplaçant par rapport à un contact électrique fixe entre deux positions stables correspondant respectivement à une ouverture et à une fermeture d'un circuit électrique, ledit mécanisme de serrure comportant un bilame de déclenchement thermique.We know for example a lock mechanism actuating at least one mobile electrical contact, moving relative to a fixed electrical contact between two stable positions respectively corresponding to an opening and to a closure of an electrical circuit, said lock mechanism comprising a bimetallic thermal trip.
Les mécanismes de serrure connus, présentent aussi des inconvénients. En effet, les appareils électriques, et en l'occurrence les disjoncteurs incorporant un tel mécanisme à serrure sont soumis, en fonction des zones géographiques d'installation à des hygrométries atmosphériques variables.Known lock mechanisms also have disadvantages. Indeed, the electrical devices, and in this case the circuit breakers incorporating such a lock mechanism are subject, depending on the zones geographic installation at varying atmospheric humidity.
Ces dernières sont à l'origine de variations dimensionnelles des matériaux plastiques hydrophiles d'organes internes réalisant notamment des supports pour le mécanisme de serrure ou pour d'autres parties fonctionnelles. Ces variations, correspondant à un déplacement relatif du bilame thermique et du mécanisme de serrure, peuvent affecter les délais de déclenchement du disjoncteur.These are the cause of dimensional variations of materials hydrophilic plastics of internal organs producing in particular supports for the lock mechanism or for other functional parts. These variations, corresponding to a relative displacement of the bimetallic strip and the lock mechanism, can affect the trigger times of the breaker.
Le but de la présente invention vise donc à s'affranchir de ces inconvénients et de réaliser un disjoncteur dont les délais de déclenchement ne sont pas altérés par des problèmes d'humidité, de déformation des parties fonctionnelles.The object of the present invention is therefore to overcome these disadvantages and realize a circuit breaker whose tripping times are not affected by moisture problems, deformation of the parts functional.
Selon l'invention, le bilame (3) de déclenchement thermique est fixé sur une carcasse, sur laquelle est monté le contact électrique mobile (1). According to the invention, the bimetallic strip (3) is set on a carcass, on which is mounted the movable electrical contact (1).
On peut ainsi éliminer le boítier en matière plastique de la chaíne cinématique du déclenchement thermique du bilame. Le boítier n'influence pas ce déclenchement, et l'utilisation d'un matériau hydrophile est envisageable.We can eliminate the plastic housing of the chain kinematic of the thermal release of the bimetallic strip. The case does not influence this trigger, and the use of a hydrophilic material is possible.
Le bilame peut en outre être intégré au mécanisme de serrure sans pour autant en augmenter l'encombrement. On libère ainsi un volume dans le disjoncteur pour d'autres fonctionnalités. Le montage du bilame directement sur le mécanisme de serrure permet également de simplifier les pièces constitutives d'un disjoncteur et en particulier de réduire le nombre de ses éléments constitutifs.The bimetallic strip can be integrated in the lock mechanism without as much increase the size. This releases a volume in the circuit breaker for other features. The installation of bimetallic directly on the lock mechanism also simplifies the parts constituents of a circuit breaker and in particular to reduce the number of various components.
Une telle configuration permet en outre de conserver le même seuil de déclenchement pour le bilame à déclenchement thermique indépendamment d'une éventuelle déformation ou d'un déplacement relatif, de pièces constitutives du mécanisme de serrure. Aucune intervention, au cours de la durée de vie d'un appareil incorporant le mécanisme de serrure conforme à l'invention, n'est nécessaire pour réajuster le seuil de déclenchement du bilame de déclenchement thermique.Such a configuration also makes it possible to maintain the same threshold of tripping for bimetal with thermal tripping independently any deformation or relative displacement of parts constituent of the lock mechanism. No intervention during the lifetime of an appliance incorporating the lock mechanism according to the invention is necessary to readjust the triggering threshold of the bimetallic thermal trip.
On obtient un sous-ensemble incorporant le bilame et qui n'altère pas la distance entre l'extrémité libre du bilame et un organe d'entraínement solidaire d'un déclencheur et susceptible d'être actionné par le bilame.We obtain a subset incorporating the bimetallic strip and which does not alter the distance between the free end of the bimetallic strip and an integral drive member a trigger and can be actuated by the bimetallic strip.
Selon un exemple de réalisation, la carcasse est métallique ou un plastique.According to an exemplary embodiment, the carcass is metallic or a plastic.
Selon un exemple de réalisation, le mécanisme de serrure comporte un déclencheur monté pivotant sur la carcasse et apte à actionner le contact électrique mobile, le déclencheur comportant un organe d'entraínement coopérant avec l'extrémité libre du bilame et susceptible de faire pivoter ledit déclencheur sous l'action du bilame de déclenchement thermique.According to an exemplary embodiment, the lock mechanism comprises a trigger pivotally mounted on the frame and able to actuate the contact mobile electric actuator, the trigger comprising a drive member cooperating with the free end of the bimetallic strip and capable of rotating said trigger under the action of the thermal trip bimetal.
Le déclencheur et l'organe d'entraínement sont par exemple réalisés en une seule pièce en matière plastique.The trigger and the drive member are for example made in one piece of plastic material.
Selon un exemple de réalisation, le mécanisme de serrure comporte des moyens de rattrapage de course comportant un montage pivotant du contact mobile sur la carcasse, et ce à l'encontre d'un moyen de rappel élastique générant un déplacement dudit contact mobile sollicité élastiquement par rapport à ladite carcasse lors de l'établissement de la liaison électrique avec le contact fixe. According to an exemplary embodiment, the lock mechanism comprises race retraction means comprising a pivoting mounting of the contact mobile on the carcass, and this against an elastic return means generating a displacement of said movable contact resiliently biased by with respect to said carcass during the establishment of the electrical connection with the fixed contact.
L'invention concerne également un appareil de protection de ligne électrique ou de protection de personnes comportant un mécanisme de serrure tel que présenté ci-dessus.The invention also relates to a line protection device electric or personal protection device incorporating a lock as presented above.
La présente invention concerne également un disjoncteur comportant :
- un boítier extérieur en matière plastique, présentant une configuration en deux demi-coquilles,
- des moyens d'assemblage des demi-coquilles,
- des moyens de fixation sur un support du type rail,
- au moins deux bornes de connexion électrique,
- un organe d'actionnement déplaçable entre deux positions stables,
- un sous-ensemble magnétique comportant un percuteur permettant d'interrompre la liaison électrique,
- et un mécanisme de serrure tel que décrit ci-dessus.
- an outer housing made of plastic, having a configuration in two half-shells,
- means for assembling the half-shells,
- fastening means on a support of the rail type,
- at least two electrical connection terminals,
- an actuating member movable between two stable positions,
- a magnetic subassembly comprising a striker for interrupting the electrical connection,
- and a lock mechanism as described above.
D'autres caractéristiques de l'invention ressortiront également de la description détaillée figurant ci-après, à titre d'exemple non limitatif, en références aux dessins dans lesquels :
- la figure 1 est un exemple de réalisation, en vue éclatée, d'un mécanisme de serrure conforme à l'invention ;
- les figures 2 et 3 sont vues en coupe du mécanisme de serrure de la figure 1, dans des états de fonctionnement différents ;
- les figures 4 et 5 sont des représentations schématiques et partielles d'un disjoncteur conforme à l'invention, avec respectivement une liaison électrique fermée et ouverte ;
- les figures 6 et 7 sont des vues extérieures partiellement découpées d'un disjoncteur conforme à l'invention.
- Figure 1 is an exemplary embodiment, exploded view, of a lock mechanism according to the invention;
- Figures 2 and 3 are sectional views of the lock mechanism of Figure 1, in different operating states;
- Figures 4 and 5 are schematic and partial representations of a circuit breaker according to the invention, with respectively a closed and open electrical connection;
- Figures 6 and 7 are partially cut out external views of a circuit breaker according to the invention.
Le mécanisme de serrure, conforme à l'invention, représenté en vue éclatée à la figure 1 est destiné à être intégré dans un appareil électrique, par exemple un disjoncteur. Le mécanisme de serrure actionne un contact électrique mobile (1) destiné à venir en appui sur un contact électrique fixe (2) représenté par exemple en figures 4 à 7.The lock mechanism, according to the invention, shown in view exploded in Figure 1 is intended to be integrated into an electrical appliance, for example a circuit breaker. Lock mechanism actuates a contact mobile electric motor (1) intended to bear on a fixed electrical contact (2) represented for example in FIGS. 4 to 7.
Le mécanisme de serrure comporte également un bilame (3) de déclenchement thermique, solidaire d'un élément constitutif dudit mécanisme de serrure. Le mécanisme de serrure est par exemple constitué d'un flasque inférieur (4) surmonté d'un flasque supérieur (5) sur lequel est fixé le bilame (3). Ce dernier est par exemple fixé sur le flasque supérieur (5) par un ou plusieurs points de soudure. Les flasques inférieur (4) et supérieur (5), assemblés par tout moyen mécanique connu, sont réalisés avec des matériaux conducteurs électriques par exemple du type cuivre.The lock mechanism also comprises a bimetallic strip (3) thermal tripping, integral with a constituent element of said mechanism lock. The lock mechanism is for example constituted by a flange lower part (4) surmounted by an upper flange (5) on which the bimetal is fixed (3). The latter is for example fixed on the upper flange (5) by one or several soldering points. The lower (4) and upper (5) flanges, assembled by any known mechanical means, are made with electrically conductive materials for example copper type.
Cette construction est particulièrement avantageuse dans la mesure où elle n'augmente pas l'encombrement du mécanisme de serrure. En outre, aucun moyen ou organe de montage ou de fixation supplémentaire pour le bilame (3) n'est nécessaire. Ce dernier fait donc partie intégrante du mécanisme de serrure. Les flasques inférieur (4) et supérieur (5) constituent ainsi une carcasse du porte-contact, avec laquelle est solidarisé le bilame (3) de déclenchement thermique. La carcasse est par exemple métallique.This construction is particularly advantageous insofar as it does not increase the size of the lock mechanism. In addition, none means or additional mounting or securing member for the bimetal (3) is not necessary. The latter is therefore an integral part of the lock. The lower (4) and upper (5) flanges thus constitute a carcass of the contact carrier, with which is secured the bimetallic strip (3) of thermal trip. The carcass is for example metallic.
Le flasque inférieur (4) est également pourvu d'un axe (6) sur lequel est monté pivotant un déclencheur (7). Ce dernier est réalisé en un matériau isolant électrique. Le déclencheur (7) permet de séparer les contacts électriques mobile (1) et fixe (2) en cas de surintensité et ce, grâce à son pivotement lui permettant d'entraíner le contact électrique mobile (1). L'une des extrémités du déclencheur (7) prend appui sur le contact électrique mobile (1) de manière à faire pivoter ce dernier et le séparer du contact électrique fixe (2).The lower flange (4) is also provided with an axis (6) on which is pivoted a trigger (7). The latter is made of a material electrical insulation. The trigger (7) separates the contacts mobile (1) and fixed (2) in case of overcurrent thanks to its pivoting allowing it to cause the movable electrical contact (1). Moon ends of the trigger (7) is supported on the movable electrical contact (1) so as to rotate the latter and separate it from the fixed electrical contact (2).
Le contact électrique mobile (1) est avantageusement monté dans ou sur la carcasse métallique constituée des flasques inférieur (4) et supérieur (5). Ce montage est obtenu grâce à un axe de pivotement (1 a) engagé dans des ouvertures (5 a) correspondantes même dans les flasques inférieur (4) et supérieur (5).The movable electrical contact (1) is advantageously mounted in or on the metal carcass consisting of the lower flanges (4) and upper (5). This mounting is obtained by means of a pivot axis (1 a) engaged in corresponding openings (5 a) even in the lower flanges (4) and higher (5).
Un ressort de rappel (8), est par exemple monté avec ses extrémités entre le contact mobile (1) et le flasque inférieur.A return spring (8) is for example mounted with its ends between the movable contact (1) and the lower flange.
Le contact mobile (1) peut donc pivoter par rapport à la carcasse sur ou dans laquelle il est monté.The movable contact (1) can therefore pivot with respect to the carcass on or in which it is mounted.
Le déclencheur (7) comporte un organe d'entraínement (9) susceptible de faire pivoter ledit déclencheur (7) sous l'action du bilame (3) de déclenchement thermique. L'organe d'entraínement (9) se situe donc à l'une des extrémités du déclencheur (7) et s'étend sensiblement, orthogonalement à la direction d'extension longitudinale dudit déclencheur (7). L'organe d'entraínement (9) présente un dégagement (10) traversé par le contact électrique mobile (1) et par extrémité libre du bilame (3). Ce dégagement (10) est délimité par un premier bord d'appui (7a) et un second bord d'appui (9a). Le premier bord d'appui (7a) est destiné à venir en contact avec le contact mobile (1) et entraíner ce dernier pour l'obtention de l'ouverture de la liaison électrique. Le second bord d'appui (9a) réalise un appui pour le bilame (3), lequel, en se déformant, entraíne l'organe d'entraínement (9) et par conséquent également un déclencheur (7) prêt à libérer le contact électrique fixe (2) par pivotement du contact électrique mobile (1) de la même manière que précédemment décrit.The trigger (7) comprises a drive member (9) capable of rotate said trigger (7) under the action of the bimetallic strip (3) thermal trip. The drive member (9) is therefore at one ends of the trigger (7) and extends substantially orthogonally to the direction of longitudinal extension of said trigger (7). The organ for training (9) has a clearance (10) traversed by the contact movable electric (1) and free end of the bimetallic strip (3). This release (10) is delimited by a first support edge (7a) and a second support edge (9a). The first support edge (7a) is intended to come into contact with the contact mobile (1) and drive the latter to obtain the opening of the link electric. The second support edge (9a) provides support for the bimetallic strip (3), which, by deforming, drives the drive member (9) and by therefore also a trigger (7) ready to release the electrical contact fixed (2) by pivoting the movable electrical contact (1) in the same way than previously described.
La figure 4 représente une liaison électrique fermée entre le contact électrique mobile (1) et fixe (2) et un positionnement correspondant du mécanisme de serrure. Le bilame (3) est dans sa position inactive non déformée.FIG. 4 shows a closed electrical connection between the contact movable (1) and fixed (2) electrical and corresponding positioning of the lock mechanism. The bimetallic strip (3) is in its inactive position distorted.
Sur la figure 5, le bilame (3) déformé, par exemple consécutivement à une surintensité, déplace l'organe d'entraínement (9), et par conséquent le déclencheur (7), de manière à séparer les contacts électriques mobile (1) et fixe (2).In FIG. 5, the bimetallic strip (3) deformed, for example as a result of a overcurrent, moves the drive member (9), and therefore the trigger (7) so as to separate the movable electrical contacts (1) and fixed (2).
Le mécanisme de serrure comporte également des moyens de rattrapage de course d'usure. Les moyens de rattrapage de la course d'usure comportent un montage pivotant du contact mobile (1) sur la carcasse. Ce montage pivotant est effectué grâce à un moyen de rappel élastique, à l'encontre d'une force de rappel sollicitant le contact mobile (1) par rapport à la carcasse et générant un déplacement dudit contact mobile (1) par rapport à la carcasse, lors de l'établissement de la liaison électrique avec le contact fixe (2). On absorbe ainsi des variations de dimensions ou de formes liées à l'humidité ou à des dilatations/contractions de certaines pièces par déformation du boítier, liées à l'hygrométrie.The lock mechanism also comprises catch-up means race wear. The catch-up means of the wear race comprise a pivotal mounting of the movable contact (1) on the carcass. This montage pivoting is effected by means of an elastic return means, against a restoring force biasing the movable contact (1) with respect to the carcass and generating a displacement of said movable contact (1) with respect to the carcass, when establishing the electrical connection with the fixed contact (2). We absorbs variations in dimensions or shapes related to humidity or to dilations / contractions of certain parts by deformation of the housing, related to hygrometry.
Le disjoncteur conforme à l'invention comprend également un organe d'actionnement (11), déplaçable entre une position stable active (figure 4) et une position stable inactive (figure 5). L'organe d'actionnement (11) est ramené de façon automatique dans sa position inactive lors du pivotement du déclencheur (7) tel que cela est représenté à la figure 5.The circuit breaker according to the invention also comprises an element actuator (11), movable between an active stable position (FIG. 4) and an inactive stable position (Figure 5). The actuating member (11) is automatically returned to its inactive position when the trigger (7) as shown in FIG.
Le déclencheur (7) et l'organe d'entraínement (9) sont par exemple réalisés en une seule pièce, par exemple en matière plastique.The trigger (7) and the drive member (9) are for example made in one piece, for example plastic.
Le disjoncteur conforme à l'invention représenté aux figures 4 à 7 comporte un boítier extérieur (12) en matière plastique et des moyens de fixation (13) sur un support du type rail (non représenté). Le disjoncteur comporte l'organe d'actionnement (11), déplaçable entre deux positions stables, l'une active représentée à la figure 4 et l'autre inactive représentée à la figure 5, permettant de commander manuellement la mise en fonction dudit disjoncteur.The circuit breaker according to the invention shown in FIGS. an outer housing (12) of plastic material and fastening means (13) on a support of the rail type (not shown). The circuit breaker comprises the actuator (11), movable between two stable positions, the active one shown in Figure 4 and the other inactive shown in Figure 5, for manually controlling the activation of said circuit breaker.
Le boítier extérieur (12) comporte par exemple deux demi-coquilles. Des moyens d'assemblage des deux demi-coquilles sont également prévus.The outer housing (12) comprises for example two half-shells. of the assembly means of the two half-shells are also provided.
Le disjoncteur comporte un sous-ensemble magnétique (14) comportant un percuteur (15) lequel permet de séparer le contact mobile (1) du contact fixe (2). Le sous-ensemble magnétique (14) est associé au contact électrique fixe (2) et ce par l'intermédiaire d'une bobine d'induction (16).The circuit breaker comprises a magnetic subassembly (14) having a striker (15) which separates the movable contact (1) from the fixed contact (2). The magnetic subassembly (14) is associated with the fixed electrical contact (2) via an induction coil (16).
Le disjoncteur conforme à l'invention comporte également un mécanisme de serrure tel que décrit précédemment. Ce dernier est représenté par exemple aux figures 6 et 7 dans deux positions correspondant respectivement à une séparation et à une fermeture des contacts électriques fixe (2) et mobile (1). Dans la première position représentée à la figure 6, le mécanisme de serrure est basculé dans une position inactive suite à la déformation du bilame (3) ou à une poussée exercée sur le déclencheur (7) par le percuteur (15). Le bilame (3) de déclenchement thermique est représentée à des fins de clarté dans ses deux positions, l'une déformée, l'autre non déformée, aux figures 6 et 7.The circuit breaker according to the invention also comprises a mechanism Lock as described above. The latter is represented by example in Figures 6 and 7 in two positions respectively corresponding separation and closure of the fixed (2) and movable electrical contacts (1). In the first position shown in Figure 6, the mechanism of lock is tilted to an inactive position following deformation of the bimetal (3) or a thrust on the trigger (7) by the firing pin (15). The bimetallic strip (3) is shown for clarity in its two positions, one deformed, the other undistorted, in FIGS. 7.
Le disjoncteur conforme à l'invention comprend également deux bornes de connexion (17) dont la première est directement reliée à la bobine d'induction (16) à l'une de ses extrémités et dont la deuxième est directement reliée via un fil de liaison (18) au bilame (3) de déclenchement thermique.The circuit breaker according to the invention also comprises two terminals of connection (17), the first of which is directly connected to the induction coil (16) at one of its ends and the second of which is directly connected via a connecting wire (18) to the bimetallic strip (3).
Lorsque l'organe d'actionnement (11) est réarmé (remise dans sa position active), ce dernier entraíne le basculement du mécanisme de serrure dans une position correspondant à la fermeture des contacts électriques fixe (2) et mobile (1). L'actionnement du mécanisme de serrure par l'intermédiaire de l'organe d'actionnement (11) se fait grâce à une biellette (19) reliant ledit organe d'actionnement (11) au mécanisme de serrure.When the actuating member (11) is reset (return to its position active), the latter causes the tilting of the lock mechanism in a position corresponding to the closing of the fixed electrical contacts (2) and mobile (1). Actuation of the lock mechanism via the actuating member (11) is made by means of a connecting rod (19) connecting said actuating member (11) at the lock mechanism.
La biellette (19) présente une forme en U dont une première branche (19a) est engagée dans l'organe de commande (11), et ce de façon excentrée par rapport à l'axe de pivotement (11 a) dudit organe de commande (11), et dont une seconde branche (19b) est engagée dans une lumière (4a) du flasque inférieur (4).The connecting rod (19) is U-shaped, having a first branch (19a) is engaged in the control member (11), and this eccentrically by relative to the pivot axis (11a) of said control member (11), and a second branch (19b) is engaged in a light (4a) of the flange lower (4).
Les formes et le fonctionnement d'un exemple de réalisation d'un tel mécanisme de serrure sont décrits par exemple dans le document EP-0 570 647. The forms and operation of an exemplary embodiment of such lock mechanism are described for example in EP-0 570 647.
La seconde branche (19b) peut se déplacer dans une lumière (4a), notamment lors du pivotement de l'organe de commande (11). La lumière (4a) présente également une partie inclinée (4b) dans laquelle est maintenue la seconde branche (19b), et ce, grâce à un cliquet (7b) formé par l'autre extrémité du déclencheur (7).The second branch (19b) can move in a light (4a), especially during the pivoting of the control member (11). The light (4a) also has an inclined part (4b) in which the second branch (19b), thanks to a ratchet (7b) formed by the other trigger end (7).
Si les contacts électriques (1 et 2) sont en position fermée (figure 2), une déformation du bilame (3), pousse l'organe d'entraínement (9) dans le sens trigonométrique, et provoque le pivotement du déclencheur (7). Le pivotement du déclencheur (7) (figure 3) déplace le cliquet (7b) et libère la seconde branche (19b). Une partie inclinée (4b), associée notamment à un ressort de rappel supplémentaire monté par exemple entre le flasque inférieur (4) et le boítier (12), provoque l'échappement de la seconde branche (19b) dans la lumière (4a) et le pivotement de la carcasse métallique dans le sens trigonométrique, conduisant à l'ouverture des contacts électriques (1 et 2).If the electrical contacts (1 and 2) are in the closed position (Figure 2), a deformation of the bimetallic strip (3), pushes the drive member (9) in the direction trigonometric, and causes the trigger (7) to pivot. The pivoting of the release (7) (Figure 3) moves the pawl (7b) and releases the second branch (19b). An inclined portion (4b), associated in particular with a spring of additional booster mounted, for example, between the lower flange (4) and the housing (12), causes the escape of the second branch (19b) in the light (4a) and the pivoting of the metal casing in the direction trigonometric, leading to the opening of the electrical contacts (1 and 2).
Le fil de liaison (18) est par exemple constitué d'une tresse conductrice.The connecting wire (18) consists for example of a conductive braid.
Le mécanisme de serrure, et par conséquent le disjoncteur conforme à l'invention, présente l'avantage non négligeable que le bilame (3) à déclenchement thermique n'est associé qu'à une seule tresse conductrice le reliant à une borne de connexion (non représentée), l'autre liaison électrique se faisant par l'intermédiaire de la carcasse métallique constituée par les flasques inférieurs (4) et supérieure (5) et réalisant le porte-contact.The lock mechanism, and therefore the circuit breaker according to the invention has the significant advantage that bimetallic strip (3) thermal tripping is associated with only one conductive braid on connecting to a connection terminal (not shown), the other electrical connection by means of the metal carcass constituted by the lower flanges (4) and upper (5) and realizing the contact carrier.
Dans les exemples de réalisation conformes à l'invention, les variations dimensionnelles ou de formes liées à l'humidité, à l'usure ou à des dilatations/contractions de certaines pièces sont ainsi absorbées, et le seuil de déclenchement du bilame (3) demeure inchangé.In the exemplary embodiments according to the invention, the variations dimensions or shapes related to moisture, wear or dilations / contractions of certain parts are thus absorbed, and the threshold of triggering of bimetallic strip (3) remains unchanged.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0308948 | 2003-07-22 | ||
FR0308948A FR2858107B1 (en) | 2003-07-22 | 2003-07-22 | IMPROVED LOCK MECHANISM FOR CIRCUIT BREAKER AND CIRCUIT BREAKER INCORPORATING SUCH LOCK MECHANISM |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1505619A1 true EP1505619A1 (en) | 2005-02-09 |
EP1505619B1 EP1505619B1 (en) | 2017-09-06 |
Family
ID=33548288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04360064.2A Not-in-force EP1505619B1 (en) | 2003-07-22 | 2004-07-13 | Ameliorated lock mechanism for circuit breakers and circuit breaker incorporating such lock |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1505619B1 (en) |
CN (1) | CN100386837C (en) |
FR (1) | FR2858107B1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2892853B1 (en) * | 2005-10-28 | 2008-01-04 | Hager Electro S A S Soc Par Ac | BLOCK COMPRISING A MECHANICAL LOCK AND A THERMAL SUBASSEMBLY OF ELECTRICAL APPARATUS |
CN106169398B (en) * | 2016-08-31 | 2018-07-20 | 厦门宏发开关设备有限公司 | A kind of interlocking mechanism, the breaker for having the interlocking mechanism |
CN106206191B (en) * | 2016-08-31 | 2019-11-12 | 厦门宏发开关设备有限公司 | A kind of interlocking mechanism, the control panel and breaker for having the interlocking mechanism |
CN106571271B (en) * | 2016-08-31 | 2018-12-18 | 厦门宏发开关设备有限公司 | A kind of interlocking mechanism, the control panel and breaker for having the interlocking mechanism |
CN106169399B (en) * | 2016-08-31 | 2018-10-09 | 厦门宏发开关设备有限公司 | A kind of interlocking mechanism, the control panel and breaker for having the interlocking mechanism |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1904731A1 (en) * | 1969-01-31 | 1970-08-13 | Westermeyer Dipl Ing Joseph | Small electrical self switch |
US3949344A (en) * | 1974-12-09 | 1976-04-06 | Texas Instruments Incorporated | Thermostatic control apparatus |
DE2731847A1 (en) * | 1976-08-02 | 1978-02-09 | Schaltelektronik Veb K | Overload cut=out with protection against short circuits - has intermediate lever, supporting lever and contact finger forming unit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2209352A (en) * | 1938-04-15 | 1940-07-30 | Colt S Mfg Co | Automatic circuit breaker |
CN2459750Y (en) * | 2000-12-13 | 2001-11-14 | 郑祥品 | Small sized circuit breaker |
-
2003
- 2003-07-22 FR FR0308948A patent/FR2858107B1/en not_active Expired - Fee Related
-
2004
- 2004-07-13 EP EP04360064.2A patent/EP1505619B1/en not_active Not-in-force
- 2004-07-22 CN CNB2004100119642A patent/CN100386837C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1904731A1 (en) * | 1969-01-31 | 1970-08-13 | Westermeyer Dipl Ing Joseph | Small electrical self switch |
US3949344A (en) * | 1974-12-09 | 1976-04-06 | Texas Instruments Incorporated | Thermostatic control apparatus |
DE2731847A1 (en) * | 1976-08-02 | 1978-02-09 | Schaltelektronik Veb K | Overload cut=out with protection against short circuits - has intermediate lever, supporting lever and contact finger forming unit |
Also Published As
Publication number | Publication date |
---|---|
FR2858107A1 (en) | 2005-01-28 |
EP1505619B1 (en) | 2017-09-06 |
FR2858107B1 (en) | 2010-02-19 |
CN100386837C (en) | 2008-05-07 |
CN1601686A (en) | 2005-03-30 |
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