EP0506503A1 - Locking mechanism for circuit breaker - Google Patents

Locking mechanism for circuit breaker Download PDF

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Publication number
EP0506503A1
EP0506503A1 EP92400634A EP92400634A EP0506503A1 EP 0506503 A1 EP0506503 A1 EP 0506503A1 EP 92400634 A EP92400634 A EP 92400634A EP 92400634 A EP92400634 A EP 92400634A EP 0506503 A1 EP0506503 A1 EP 0506503A1
Authority
EP
European Patent Office
Prior art keywords
pawl
contact
contact carrier
spring
mechanism according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92400634A
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German (de)
French (fr)
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EP0506503B1 (en
Inventor
Jean Marie Roiatti
Francis Deckert
Thierry Sitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP0506503A1 publication Critical patent/EP0506503A1/en
Application granted granted Critical
Publication of EP0506503B1 publication Critical patent/EP0506503B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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

Definitions

  • the present invention relates to a lock mechanism for a circuit breaker with a thermomagnetic circuit breaker or similar device. It also relates to circuit breakers fitted with this mechanism.
  • Line protection circuit breakers include, in a housing, a circuit extending between two terminals and comprising a thermal trip bimetal for protecting the line against overcurrents and an electromagnetic circuit breaker comprising a coil with an associated plunger core to a striker, to ensure disjunction by opening a movable contact cooperating with one or more fixed contacts.
  • the multipole circuits are preferably produced by combining several single-pole circuit breakers of this type.
  • a locking mechanism of the toggle type, generally comprising an operating member with a lever which can be actuated manually and causing a rod tending to push back a pivoting contact carrier which carries one or more contacts to bring this one in pressure contact against a fixed contact, until in a position in which the return in opposite direction, towards the contact opening, is normally prevented by a pawl preventing the link, by pressing the knee lever on the contact carrier, from escaping and releasing it.
  • Manual opening is carried out by operating the lever in the opposite direction.
  • the disjunction is generally caused by action of the bimetallic strip or the striker against a trigger lever so as to cause the release of the pawl and therefore the escape of the link, and, in the case of magnetic disjunction, the forced opening of the door -contact.
  • the return spring of the contact carrier is also generally used to provide contact pressure.
  • the present invention proposes to remedy these drawbacks and to provide a circuit breaker having a lock mechanism capable of being assembled, preferably automatically, in a single assembly and such that the assembly can be mounted in one piece, preferably automatically, in the circuit breaker.
  • Another object of the invention is to provide such a lock mechanism which comprises a limited number of parts.
  • Yet another objective of the invention is to allow the arming of the contact spring when the lock mechanism is put in place in the circuit breaker housing.
  • the subject of the invention is a circuit breaker lock mechanism of the type comprising an actuating member provided with a handle and normally pushed back in the opening direction by a return spring, a connecting rod of which one end is mounted eccentrically on the actuating member, a contact carrier pivoting about an axis and having a ramp against which can come to rest and brace the other end of the link, a movable contact mounted on the holder contact so as to be able to pivot slightly thereon to exert contact pressure on a fixed contact, a power spring urging the contact carrier in the opening direction and which, preferably, when the contact carrier is in position closing, applies the movable contact in contact pressure against the fixed contact, a pawl, mounted on the contact carrier and preventing the escape of the rod when it is braced against the contact carrier, and a lever trigger capable, when actuated, of causing the pawl to tilt and releasing the link and possibly, driving the contact carrier in the open position for forced removal of the movable contact, characterized in that the spring the contact
  • compact assembly in the sense of the invention means an assembly in which the various constituents remain in place, relatively non-removable, when the assembly is handled or transported.
  • the return spring is a spring of the pin type, mounted on a pivot axis common to the contact carrier and to the trigger lever.
  • the pawl and the trigger lever are produced in an integral assembly which may possibly consist of a single piece.
  • the contact carrier is produced in the form of two flanges which can be assembled, preferably by crimping, for example in cut metal, and receiving between them the movable contact, the return spring, a pivot axis, the trigger lever and the ratchet.
  • the return of the pawl to the closed position is ensured by the return spring of the actuating member itself during a first part of the closing stroke thereof.
  • the free arm of this spring can, moreover, be armed during assembly to be located behind a relief of the ratchet trigger, the actuating member having a ramp laterally pushing said spring arm to release it definitively during the first arming maneuver.
  • the invention also relates to circuit breakers having a mechanism according to the invention.
  • the assembly of the mechanism shown in exploded view in FIG. 1, comprises a contact carrier 1 formed by two flanges 2 and 3.
  • the flange 2 has folded tabs 4, 5 having crimping spouts intended to penetrate holes 6, 7 of the flange 3 for assembly by crimping.
  • Two slots 8 are cut in the flanges 2 and 3 having a first part comprising ramps 10 on which the link can be braced and a second part 9 for releasing the link 36 (fig. 2).
  • Holes 11 in the two flanges allow the ends of the pivot axis of the assembly to pass, while holes 12 are made in the flanges 2, 3 at the bottom to receive the pivot axes of the movable contact 16.
  • the flanges 2 and 3 have external lateral tabs 13, 14 for possible kinematic connection with adjacent modular devices.
  • the movable contact 16 has the shape of a rectilinear lever, bent at its lower part with two lugs 17 which penetrate into the holes 12 and serve as a pivot axis.
  • a side tab 18 of braid welding completes the contact 16.
  • the trigger lever 19 has a central hole 20, one of the exits, visible in Figure 1, is offset laterally below a stud 21 located on the upper surface.
  • An extension or lug 22 protrudes in the intermediate position on the other side.
  • This lever 19 has an intermediate surface 23 intended to be struck by the rod of the striker 47 of the electromagnetic coil and, at its lower end, a foot 24 capable of engaging the movable contact 16.
  • the pawl 25 has two holes 26, 27 allowing its lateral positioning and its blocking on the lever 19, making it integral in rotation with this lever.
  • the ratchet has a branch provided with the attachment ramp 28, which continues with a tapered portion, a pawl arm 29 extending below for a forced release of the link 36.
  • a contact 16 a pivot pin 30 passing through the hole 20 of the lever and emerging outside the flanges through the holes 11, is mounted on the flange 2, a powerful contact spring 31 of the type with pin, one branch 32 of which is pressed against the upper part of the movable contact 16 to push it clockwise and the other branch 33 of which is blocked, after tensioning the spring 31 during assembly, against a lug 15 of the flange 2.
  • the protruding end of the branch 33 is deflected, then blocked by a relief of the housing relieving the tab 15 and ensuring the tensioning of the spring on the housing.
  • the second flange 3 is placed and the two flanges are joined by crimping, the tensioning of the spring 31 against the tab 15 being carried out after crimping.
  • the assembly thus prepared can be associated with the actuating member 34 with its lever 35, the connecting rod 36 and the return spring 37 of the actuating member, one branch of which is integral with this member and the other of which , 38, can push the lever-ratchet assembly through the spout 22 when the lever 35 is turned in an anti-clockwise arming direction, until the branch 38 comes into contact with a relief 39 in the housing which immobilizes it.
  • the branch 38 is blocked by the relief 40 but the first arming rotation of the member 34, which has a ramp 41 for this purpose, laterally spreads the branch 38 until it leaves the relief 39 and is thrown forward counterclockwise.
  • the branch 38 of the spring 37 has encountered the stop 39 so that the last part of the rotation of the contact carrier 1, with its pawl lever, is carried out without biasing the spring 37, the pawl maintaining the end 44 of the link against the ramp 10 by the presence of its surface 28 suitably oriented, by simple form locking.
  • the spring 31 is in its extreme tension position.
  • FIG. 8 shows the various components of force exerted on the mechanism when the latter is in its closed contact position, the geometry of the device being such that the effect of the toggle joint at the level of the link 36 and the axis of the actuating member 34 is ensured while the pawl 25 remains in the locked position because its surface 28 is perpendicular to the geometric radius joining the pawl pivot axis 30 and passing through the 'geometric axis of the branch which forms the end 44 of the rod 36 consisting of a cylindrical metal rod bent at its two ends.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Push-Button Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The locking mechanism comprises a compact assembly formed by a contact holder (1) produced by assembling two flanges (2, 3) which can be joined together and which carry between them, around their common pivot pin (30), a trip lever (19) integral with a pawl (25), rotating about the common pin (30), the moving contact (16) being mounted pivotably about another pin (17) between the said two flanges so as to be stressed in the contact position by a spring (31) bearing on the casing. <IMAGE>

Description

La présente invention a trait à un mécanisme de serrure pour disjoncteur à disjonction magnétothermique ou appareil analogue. Elle a également trait aux disjoncteurs munis de ce mécanisme.The present invention relates to a lock mechanism for a circuit breaker with a thermomagnetic circuit breaker or similar device. It also relates to circuit breakers fitted with this mechanism.

Les disjoncteurs de protection de ligne comprennent, dans un boîtier, un circuit s'étendant entre deux bornes et comprenant une bilame de déclenchement thermique pour la protection de la ligne contre les surintensités et un organe électromagnétique de disjonction comportant une bobine avec un noyau plongeur associé à un percuteur, pour assurer la disjonction par ouverture d'un contact mobile coopérant avec un ou plusieurs contacts fixes. Les circuits multipolaires sont réalisés, de préférence, par association de plusieurs disjoncteurs unipolaires de ce type.Line protection circuit breakers include, in a housing, a circuit extending between two terminals and comprising a thermal trip bimetal for protecting the line against overcurrents and an electromagnetic circuit breaker comprising a coil with an associated plunger core to a striker, to ensure disjunction by opening a movable contact cooperating with one or more fixed contacts. The multipole circuits are preferably produced by combining several single-pole circuit breakers of this type.

L'actionnement du contact mobile est généralement effectué par un mécanisme de serrure, du type à genouillère, comprenant généralement un organe de manoeuvre avec une manette actionnable manuellement et entraînant une biellette tendant à repousser un porte-contact pivotant qui porte un ou plusieurs contacts pour amener celui-ci 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-contact, de s'échapper et libérer celui-ci. L'ouverture manuelle s'effectue en actionnant la manette en sens contraire. La disjonction est généralement provoquée par action de la bilame ou du percuteur contre un levier déclencheur de façon à provoquer la libération du cliquet et donc l'échappement de la biellette, et, dans le cas de la disjonction magnétique, l'ouverture forcée du porte-contact. Le ressort de rappel du porte-contact sert également, en général, à assurer la pression de contact.The actuation of the movable contact is generally carried out by a locking mechanism, of the toggle type, generally comprising an operating member with a lever which can be actuated manually and causing a rod tending to push back a pivoting contact carrier which carries one or more contacts to bring this one in pressure contact against a fixed contact, until in a position in which the return in opposite direction, towards the contact opening, is normally prevented by a pawl preventing the link, by pressing the knee lever on the contact carrier, from escaping and releasing it. Manual opening is carried out by operating the lever in the opposite direction. The disjunction is generally caused by action of the bimetallic strip or the striker against a trigger lever so as to cause the release of the pawl and therefore the escape of the link, and, in the case of magnetic disjunction, the forced opening of the door -contact. The return spring of the contact carrier is also generally used to provide contact pressure.

De tels dispositifs sont décrits, par exemple, dans les brevets EP-A-0 143 682 et FR-A-2 626 104.Such devices are described, for example, in patents EP-A-0 143 682 and FR-A-2 626 104.

Ces mécanismes présentent un certain degré de complication et se prêtent mal à une fabrication automatique en raison du nombre des pièces qui les constituent et des contraintes spatiales et fonctionnelles qui leurs sont propres.These mechanisms have a certain degree of complication and do not lend themselves to automatic manufacture due to the number of parts which constitute them and the spatial and functional constraints which are specific to them.

La présente invention se propose de remédier à ces inconvénients et de fournir un disjoncteur possédant un mécanisme de serrure susceptible d'être assemblé, de préférence automatiquement, en un seul ensemble et tel que l'ensemble peut être monté d'un seul tenant, de préférence de façon automatique, dans le disjoncteur.The present invention proposes to remedy these drawbacks and to provide a circuit breaker having a lock mechanism capable of being assembled, preferably automatically, in a single assembly and such that the assembly can be mounted in one piece, preferably automatically, in the circuit breaker.

Un autre objectif de l'invention est de fournir un tel mécanisme de serrure qui comporte un nombre de pièces limité.Another object of the invention is to provide such a lock mechanism which comprises a limited number of parts.

Un autre objectif encore de l'invention est de permettre l'armement du ressort de contact lors de la mise en place du mécanisme de serrure dans le boîtier du disjoncteur.Yet another objective of the invention is to allow the arming of the contact spring when the lock mechanism is put in place in the circuit breaker housing.

L'invention a pour objet un mécanisme de serrure de disjoncteur du type comprenant un organe d'actionnement muni d'une manette et normalement repoussé en direction d'ouverture par un ressort de rappel, une biellette dont une extrémité est montée de façon excentrée sur l'organe d'actionnement, un porte-contact pivotant autour d'un axe et présentant une rampe contre laquelle peut venir s'appuyer et s'arc-bouter l'autre extrémité de la biellette, un contact mobile monté sur le porte-contact de façon à pouvoir pivoter légèrement sur celui-ci pour exercer une pression de contact sur un contact fixe, un ressort de puissance sollicitant le porte-contact en direction d'ouverture et qui, de préférence, lorsque le porte-contact est en position de fermeture, applique le contact mobile en pression de contact contre le contact fixe, un cliquet, monté sur le porte-contact et empêchant l'échappement de la biellette lorsqu'elle est arc-boutée contre le porte-contact, et un levier déclencheur susceptible, lorsqu'il est actionné, de provoquer le basculement du cliquet et la libération de la biellette et éventuellement, d'entraîner le porte-contact en position d'ouverture pour un arrachement forcé du contact mobile, caractérisé en ce que le ressort de rappel, le porte-contact, le levier déclencheur et le cliquet sont montés sur le porte-contact pour former un ensemble compact.The subject of the invention is a circuit breaker lock mechanism of the type comprising an actuating member provided with a handle and normally pushed back in the opening direction by a return spring, a connecting rod of which one end is mounted eccentrically on the actuating member, a contact carrier pivoting about an axis and having a ramp against which can come to rest and brace the other end of the link, a movable contact mounted on the holder contact so as to be able to pivot slightly thereon to exert contact pressure on a fixed contact, a power spring urging the contact carrier in the opening direction and which, preferably, when the contact carrier is in position closing, applies the movable contact in contact pressure against the fixed contact, a pawl, mounted on the contact carrier and preventing the escape of the rod when it is braced against the contact carrier, and a lever trigger capable, when actuated, of causing the pawl to tilt and releasing the link and possibly, driving the contact carrier in the open position for forced removal of the movable contact, characterized in that the spring the contact holder, the trigger lever and the pawl are mounted on the contact holder to form a compact unit.

Par ensemble compact dans le sens de l'invention, on entend un ensemble dans lequel les différents constituants restent en place, de façon relativement indémontable, lorsque l'ensemble est manipulé ou transporté.By compact assembly in the sense of the invention means an assembly in which the various constituents remain in place, relatively non-removable, when the assembly is handled or transported.

De façon avantageuse, le ressort de rappel est un ressort du type à épingle, monté sur un axe de pivotement commun au porte-contact et au levier déclencheur.Advantageously, the return spring is a spring of the pin type, mounted on a pivot axis common to the contact carrier and to the trigger lever.

De préférence, le cliquet et le levier déclencheur sont réalisés en un ensemble solidaire pouvant éventuellement être constitué d'une pièce unique.Preferably, the pawl and the trigger lever are produced in an integral assembly which may possibly consist of a single piece.

De façon avantageuse, le porte-contact est réalisé sous forme de deux flasques assemblables, de préférence par sertissage, par exemple en métal découpé, et recevant entre eux le contact mobile, le ressort de rappel, un axe de pivotement, le levier déclencheur et le cliquet.Advantageously, the contact carrier is produced in the form of two flanges which can be assembled, preferably by crimping, for example in cut metal, and receiving between them the movable contact, the return spring, a pivot axis, the trigger lever and the ratchet.

De façon avantageuse également, le rappel du cliquet en position de fermeture est assuré par le ressort de rappel de l'organe d'actionnement lui-même pendant une première partie de la course de fermeture de celui-ci. Le bras libre de ce ressort peut, en outre, être armé lors du montage pour se situer à l'arrière d'un relief du déclencheur du cliquet, l'organe d'actionnement possédant une rampe repoussant latéralement ledit bras de ressort pour le libérer définitivement lors de la première manoeuvre d'armement.Also advantageously, the return of the pawl to the closed position is ensured by the return spring of the actuating member itself during a first part of the closing stroke thereof. The free arm of this spring can, moreover, be armed during assembly to be located behind a relief of the ratchet trigger, the actuating member having a ramp laterally pushing said spring arm to release it definitively during the first arming maneuver.

L'invention a également pour objet les disjoncteurs ayant un mécanisme selon l'invention.The invention also relates to circuit breakers having a mechanism according to the invention.

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

  • la figure 1 représente une vue éclatée de l'ensemble compact du mécanisme,
  • la figure 2 représente une vue du mécanisme en position de contact fermé,
  • la figure 3 représente une vue du mécanisme au début d'une phase de déclenchement thermique,
  • les figures 4 à 6 représentent les différentes phases d'une ouverture par déclenchement magnétique,
  • la figure 7 représente le mécanisme en position d'ouverture,
  • la figure 8 représente une vue du mécanisme analogue à la figure 1 avec un diagramme des forces s'exerçant sur lesdifférentes parties du mécanisme.
Other advantages and characteristics of the invention will appear on reading the following description, given by way of nonlimiting example and referring to the appended drawing in which:
  • FIG. 1 represents an exploded view of the compact assembly of the mechanism,
  • FIG. 2 represents a view of the mechanism in the closed contact position,
  • FIG. 3 represents a view of the mechanism at the start of a thermal trip phase,
  • FIGS. 4 to 6 represent the different phases of an opening by magnetic triggering,
  • FIG. 7 shows the mechanism in the open position,
  • 8 shows a view of the mechanism similar to Figure 1 with a diagram of the forces acting on the different parts of the mechanism.

On se réfère tout d'abord à la figure 1.We first refer to Figure 1.

L'ensemble de mécanisme, représenté en vue éclatée sur la figure 1, comporte un porte-contact 1 formé de deux flasques 2 et 3. Le flasque 2 présente des pattes rabattues 4, 5 présentant des becs de sertissage destinés à pénétrer dans des trous 6, 7 du flasque 3 pour un assemblage par sertissage. Deux lumières 8 sont découpées dans les flasques 2 et 3 présentant une première partie comprenant des rampes 10 sur lesquelles peut s'arc-bouter la biellette et une seconde partie 9 de dégagement de la biellette 36 (fig. 2). Des trous 11 des deux flasques permettent le passage des extrémités de l'axe de pivotement de l'ensemble alors que des trous 12 sont pratiqués dans les flasques 2, 3 à la partie inférieure pour recevoir les axes de pivotement du contact mobile 16. Les flasques 2 et 3 présentent des pattes latérales extérieures 13, 14 pour une liaison cinématique éventuelle avec des appareils modulaires adjacents.The assembly of the mechanism, shown in exploded view in FIG. 1, comprises a contact carrier 1 formed by two flanges 2 and 3. The flange 2 has folded tabs 4, 5 having crimping spouts intended to penetrate holes 6, 7 of the flange 3 for assembly by crimping. Two slots 8 are cut in the flanges 2 and 3 having a first part comprising ramps 10 on which the link can be braced and a second part 9 for releasing the link 36 (fig. 2). Holes 11 in the two flanges allow the ends of the pivot axis of the assembly to pass, while holes 12 are made in the flanges 2, 3 at the bottom to receive the pivot axes of the movable contact 16. The flanges 2 and 3 have external lateral tabs 13, 14 for possible kinematic connection with adjacent modular devices.

Le contact mobile 16 présente la forme d'un levier rectiligne, coudé à sa partie inférieure avec deux ergots 17 qui pénètrent dans les trous 12 et servent d'axe de pivotement. Une patte latérale 18 de soudure de tresse complète le contact 16.The movable contact 16 has the shape of a rectilinear lever, bent at its lower part with two lugs 17 which penetrate into the holes 12 and serve as a pivot axis. A side tab 18 of braid welding completes the contact 16.

Le levier déclencheur 19 présente un trou central 20 dont l'une des sorties, visible sur la figure 1, est déportée latéralement au-dessous d'un téton 21 situé à la surface supérieure. Un prolongement ou ergot 22 dépasse en position intermédiaire de l'autre côté. Ce levier 19 présente une surface intermédiaire 23 destinée à être percutée par la tige du percuteur 47 de la bobine électromagnétique et, à son extrémité inférieure, un pied 24 susceptible d'engager le contact mobile 16.The trigger lever 19 has a central hole 20, one of the exits, visible in Figure 1, is offset laterally below a stud 21 located on the upper surface. An extension or lug 22 protrudes in the intermediate position on the other side. This lever 19 has an intermediate surface 23 intended to be struck by the rod of the striker 47 of the electromagnetic coil and, at its lower end, a foot 24 capable of engaging the movable contact 16.

Le cliquet 25 présente deux trous 2 6, 2 7 permettant sa mise en place latérale et son blocage sur le levier 19, le rendant solidaire en rotation de ce levier. A sa partie supérieure, le cliquet présente une branche munie de la rampe d'accrochage 28, laquelle se poursuit par une portion effilée, un bras de cliquet 29 s'étendant au-dessous pour un dégagement forcé de la biellette 36.The pawl 25 has two holes 26, 27 allowing its lateral positioning and its blocking on the lever 19, making it integral in rotation with this lever. At its upper part, the ratchet has a branch provided with the attachment ramp 28, which continues with a tapered portion, a pawl arm 29 extending below for a forced release of the link 36.

Pour monter l'ensemble, on monte, sur le flasque 2, le contact 16, un axe de pivotement 30 traversant le trou 20 du levier et émergeant à l'extérieur des flasques par les trous 11, un puissant ressort de contact 31 du type à épingle dont une branche 32 vient s'appliquer contre la partie supérieure du contact mobile 16 pour le repousser en sens horaire et dont l'autre branche 33 est bloquée, après mise en tension du ressort 31 lors du montage, contre une patte 15 du flasque 2. Lors du montage du mécanisme dans le boîtier, l'extrémité dépassante de la branche 33 est défléchie, puis bloquée par un relief du boîtier soulageant la patte 15 et assurant la mise en tension du ressort sur le boîtier. Après montage de l'ensemble du levier déclencheur 19-cliquet 25, on pose le deuxième flasque 3 et l'on réunit les deux flasques par sertissage, la mise en tension du ressort 31 contre la patte 15 étant effectuée après le sertissage.To mount the assembly, a contact 16, a pivot pin 30 passing through the hole 20 of the lever and emerging outside the flanges through the holes 11, is mounted on the flange 2, a powerful contact spring 31 of the type with pin, one branch 32 of which is pressed against the upper part of the movable contact 16 to push it clockwise and the other branch 33 of which is blocked, after tensioning the spring 31 during assembly, against a lug 15 of the flange 2. When mounting the mechanism in the housing, the protruding end of the branch 33 is deflected, then blocked by a relief of the housing relieving the tab 15 and ensuring the tensioning of the spring on the housing. After mounting the assembly of the trigger lever 19-pawl 25, the second flange 3 is placed and the two flanges are joined by crimping, the tensioning of the spring 31 against the tab 15 being carried out after crimping.

L'ensemble ainsi préparé peut être associé à l'organe d'actionnement 34 avec sa manette 35, la biellette 36 et le ressort de rappel 37 de l'organe d'actionnement dont une branche est solidaire de cet organe et dont l'autre, 38, peut repousser l'ensemble levier-cliquet par le biais du bec 22 lorsque la manette 35 est tournée en sens anti-horaire d'armement, et ce jusqu'au moment où la branche 38 vient rencontrer un relief 39 du boîtier qui l'immobilise. Au montage initial, la branche 38 est bloquée par le relief 40 mais la première rotation d'armement de l'organe 34, qui présente une rampe 41 à cet effet, écarte latéralement la branche 38 jusqu'à sortir du relief 39 et être projetée en avant en sens anti-horaire.The assembly thus prepared can be associated with the actuating member 34 with its lever 35, the connecting rod 36 and the return spring 37 of the actuating member, one branch of which is integral with this member and the other of which , 38, can push the lever-ratchet assembly through the spout 22 when the lever 35 is turned in an anti-clockwise arming direction, until the branch 38 comes into contact with a relief 39 in the housing which immobilizes it. During the initial assembly, the branch 38 is blocked by the relief 40 but the first arming rotation of the member 34, which has a ramp 41 for this purpose, laterally spreads the branch 38 until it leaves the relief 39 and is thrown forward counterclockwise.

On se réfère maintenant aux figures 2 à 8.We now refer to Figures 2 to 8.

Dans la position de contact ouvert représentée sur la figure 7, le ressort puissant 31, qui appuie sur le contact 16, repousse celui-ci en butée contre la butée 42 du porte-contact 1, de sorte que celui-ci est également sollicité en sens anti-horaire autour de son axe 30 à l'écart du contact fixe 43. Dans cette position, l'extrémité 44 de la biellette 36, située sous la surface 28 du cliquet, se trouve loin de la rampe 10 du porte-contact, le levier 19 avec son cliquet 25 étant maintenu dans sa position, de même que la manette 35, par la branche 38 du ressort 37.In the open contact position shown on the FIG. 7, the powerful spring 31, which presses on the contact 16, pushes the latter into abutment against the abutment 42 of the contact carrier 1, so that the latter is also biased counterclockwise around its axis 30 away from the fixed contact 43. In this position, the end 44 of the link 36, located under the surface 28 of the pawl, is located far from the ramp 10 of the contact carrier, the lever 19 with its pawl 25 being held in its position, like the handle 35, by the branch 38 of the spring 37.

Lorsque l'on tourne la manette en sens anti-horaire, la biellette 36, maintenue par le cliquet 25 toujours sollicité par le ressort 37, finit par venir au contact des rampes 10 du porte-contact qui se met à tourner en sens horaire jusqu'au moment où l'on atteint la position de fermeture de la figure 2. Dans cette position, le contact 16 a fini par venir s'appliquer contre le contact fixe 43 et, le porte-contact continuant encore un peu de tourner, sa butée 42 s'éloigne du contact mobile de sorte que le ressort 31, qui prend appui par sa branche 33 sur le boîtier, sollicite fortement le contact mobile contre le contact fixe. Avant la fin de ce mouvement, la branche 38 du ressort 37 a rencontré la butée 39 de sorte que la dernière partie de la rotation du porte-contact 1, avec son levier-cliquet, s'effectue sans sollicitation du ressort 37, le cliquet maintenant l'extrémité 44 de la biellette contre la rampe 10 par la présence de sa surface 28 convenablement orientée, par simple blocage de forme. Le ressort 31 se trouve dans sa position de tension extrême.When the lever is turned anti-clockwise, the link 36, held by the pawl 25 still biased by the spring 37, ends up coming into contact with the ramps 10 of the contact carrier which starts turning clockwise until 'when we reach the closed position of Figure 2. In this position, the contact 16 ended up pressing against the fixed contact 43 and, the contact carrier still continuing to rotate a little, its stop 42 moves away from the movable contact so that the spring 31, which bears by its branch 33 on the housing, strongly urges the movable contact against the fixed contact. Before the end of this movement, the branch 38 of the spring 37 has encountered the stop 39 so that the last part of the rotation of the contact carrier 1, with its pawl lever, is carried out without biasing the spring 37, the pawl maintaining the end 44 of the link against the ramp 10 by the presence of its surface 28 suitably oriented, by simple form locking. The spring 31 is in its extreme tension position.

Si, le contact étant en position fermée, la tringle 46 tire l'extrémité inférieure du levier 19 en sens anti-horaire, le pivotement du levier déplace le cliquet 25 qui libère l'extrémité 44 de la biellette 36. En raison de l'inclinaison des rampes 10, et sous l'effet des ressorts, la biellette 36 s'échappe dans les lumières 8 et le ressort 31 repousse le contact 16 et le porte-contact 1 de façon brusque en sens anti-horaire jusqu'à atteindre la position d'ouverture représentée sur la figure 7, le ressort 37 provoquant le réarmement du cliquet 25 qui ramène également le levier 19 dont il est solidaire.If, with the contact in the closed position, the rod 46 pulls the lower end of the lever 19 counterclockwise, the pivoting of the lever moves the pawl 25 which releases the end 44 of the link 36. Due to the inclination of the ramps 10, and under the effect of the springs, the link 36 escapes into the slots 8 and the spring 31 pushes the contact 16 and the contact carrier 1 so abrupt anticlockwise until reaching the open position shown in Figure 7, the spring 37 causing the reset of the pawl 25 which also brings back the lever 19 which it is integral.

Si, partant de la position de contact fermé de la figure 2, c'est cette fois le percuteur électromagnétique 47 qui vient percuter la surface 23 du levier 19, celui-ci bascule en sens anti-horaire, ce qui libère le cliquet et la biellette comme précédemment. En outre, la poussée brutale du percuteur 47 amène le bec 24 du levier contre le contact 16 qui bascule en sens anti-horaire et vient rapidement se bloquer contre le porte-contact 1, la poursuite du mouvement du percuteur 47, qui arrache le contact mobile 16 loin du contact fixe 43, provoquant la rotation en sens anti-horaire du porte-contact 1 et de tous ses éléments, jusqu'à sa position représentée sur la figure 6, après quoi le ressort 37 réarme le cliquet 25 et l'on se retrouve dans la position de contact ouvert de la figure 5.If, starting from the closed contact position of FIG. 2, it is this time the electromagnetic striker 47 which strikes the surface 23 of the lever 19, the latter switches anticlockwise, which releases the pawl and the link as before. In addition, the brutal push of the striker 47 brings the beak 24 of the lever against the contact 16 which switches counterclockwise and quickly locks against the contact carrier 1, the continuation of the movement of the striker 47, which tears the contact movable 16 away from the fixed contact 43, causing the contact carrier 1 and all of its elements to rotate anti-clockwise, to its position shown in FIG. 6, after which the spring 37 resets the pawl 25 and the we find ourselves in the open contact position of figure 5.

On comprend que l'on peut en outre munir la surface supérieure du porte-contact 1 d'un indicateur 49 visible par une fenêtre du boîtier et qui indique la position exacte du porte-contact et donc de son contact 16.It will be understood that it is also possible to provide the upper surface of the contact carrier 1 with an indicator 49 visible through a window of the housing and which indicates the exact position of the contact carrier and therefore of its contact 16.

On a représenté, sur la figure 8, les différentes composantes de force qui s'exercent sur le mécanisme lorsque celui-ci est dans sa position de contact fermé, la géométrie du dispositif étant telle que l'effet de genouillère au niveau de la biellette 36 et de l'axe de l'organe d'actionnement 34 est assuré alors que le cliquet 25 reste en position de blocage du fait que sa surface 28 est perpendiculaire au rayon géométrique rejoignant l'axe de pivotement de cliquet 30 et passant par l'axe géométrique de la branche qui forme l'extrémité 44 de la biellette 36 constituée d'une tige métallique cylindrique coudée à ses deux extrémités.FIG. 8 shows the various components of force exerted on the mechanism when the latter is in its closed contact position, the geometry of the device being such that the effect of the toggle joint at the level of the link 36 and the axis of the actuating member 34 is ensured while the pawl 25 remains in the locked position because its surface 28 is perpendicular to the geometric radius joining the pawl pivot axis 30 and passing through the 'geometric axis of the branch which forms the end 44 of the rod 36 consisting of a cylindrical metal rod bent at its two ends.

Claims (11)

Mécanisme de serrure de disjoncteur, du type comprenant un organe d'actionnement (34) muni d'une manette (35) et normalement repoussé en direction d'ouverture par un ressort de rappel (37), une biellette (36) dont une extrémité est montée de façon excentrée sur l'organe d'actionnement (34), un porte-contact (1) pivotant autour d'un axe (30) et présentant une rampe (10) contre laquelle peut venir s'appuyer et s'arc-bouter l'autre extrémité de la biellette (36), un contact mobile (16) monté sur le porte-contact (1) de façon à pouvoir pivoter lègèrement sur celui-ci pour exercer une pression de contact sur un contact fixe (43), un ressort de puissance (31) sollicitant le porte-contact en direction d'ouverture et, lorsque le porte-contact est en position de fermeture, appliquant le contact mobile (16) en pression de contact contre le contact fixe (43), un cliquet (25) monté sur le porte-contact (1) et empêchant l'échappement de la biellette (36) lorsqu'elle est arc-boutée contre le porte-contact, et un levier déclencheur (19) susceptible, lorsqu'il est actionné, de provoquer le basculement du cliquet (25) et la libération de la biellette, et éventuellement d'entraîner le porte-contact (1) en position d'ouverture pour un arrachement forcé du contact mobile (16), caractérisé en ce que le ressort de rappel (31), le levier déclencheur (19) et le cliquet (25) sont montés sur le porte-contact (1) pour former un ensemble compact.Circuit breaker lock mechanism, of the type comprising an actuating member (34) provided with a lever (35) and normally pushed back in the opening direction by a return spring (37), a link (36) one end of which is mounted eccentrically on the actuating member (34), a contact carrier (1) pivoting about an axis (30) and having a ramp (10) against which can come to bear and arc - plug the other end of the link (36), a movable contact (16) mounted on the contact carrier (1) so as to be able to pivot slightly on the latter to exert contact pressure on a fixed contact (43 ), a power spring (31) urging the contact carrier in the opening direction and, when the contact carrier is in the closed position, applying the movable contact (16) in contact pressure against the fixed contact (43) , a pawl (25) mounted on the contact carrier (1) and preventing the escape of the link (36) when it is braced e against the contact carrier, and a trip lever (19) capable, when actuated, of causing the pawl (25) to tilt and release the link, and possibly of driving the contact carrier (1) in the open position for forced removal of the movable contact (16), characterized in that the return spring (31), the trigger lever (19) and the pawl (25) are mounted on the contact carrier (1) to form a compact whole. Mécanisme selon la revendication 1, caractérisé en ce que le porte-contact (1) est réalisé sous forme de deux flasques (2, 3) assemblables et recevant entre eux le contact mobile (16), le ressort de rappel (31), un axe de pivotement (30), le levier déclencheur (19) et le cliquet (25).Mechanism according to claim 1, characterized in that the contact carrier (1) is produced in the form of two flanges (2, 3) which can be assembled and which receive between them the movable contact (16), the return spring (31), a pivot pin (30), the trigger lever (19) and the pawl (25). Mécanisme selon l'une des revendications 1 et 2, caractérisé en ce que le ressort de rappel est un ressort du type à épingle (31) monté autour de l'axe de pivotement commun au porte-contact (1) et au levier déclencheur (19).Mechanism according to one of claims 1 and 2, characterized in that the return spring is a spring of the pin type (31) mounted around the pivot axis common to the contact carrier (1) and to the trigger lever (19). Mécanisme selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le cliquet (25) et le levier déclencheur (19) sont réalisés en un ensemble solidaire.Mechanism according to any one of Claims 1 to 3, characterized in that the pawl (25) and the trigger lever (19) are produced in an integral assembly. Mécanisme selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le rappel du cliquet (25) en position de fermeture est assuré par le ressort de rappel (37) de l'organe d'actionnement (34) pendant une première partie de la course de fermeture de celui-ci.Mechanism according to any one of claims 1 to 4, characterized in that the return of the pawl (25) in the closed position is ensured by the return spring (37) of the actuating member (34) during a first part of the closing stroke of it. Mécanisme selon la revendication 5, caractérisé en ce que le bras de ressort provoquant le rappel du cliquet est bloqué, après ladite première partie de course, par un relief du boîtier.Mechanism according to claim 5, characterized in that the spring arm causing the return of the pawl is blocked, after said first stroke, by a relief of the housing. Mécanisme selon l'une des revendications 5 et 6, caractérisé en ce que le bras libre du ressort (37) assurant le rappel du cliquet, est armé lors du montage du mécanisme dans le boîtier du disjoncteur, pour se situer à l'arrière d'un relief du levier déclencheur (19) du cliquet (25), l'organe d'actionnement (34) possédant une rampe (41) repoussant latéralement ledit bras de ressort (37) pour le libérer définitivement lors de la première manoeuvre d'armement.Mechanism according to one of claims 5 and 6, characterized in that the free arm of the spring (37) ensuring the return of the pawl, is armed when the mechanism is mounted in the circuit breaker housing, to be located at the rear of 'a relief of the trigger lever (19) of the pawl (25), the actuating member (34) having a ramp (41) laterally pushing said spring arm (37) to release it definitively during the first maneuver of armament. Mécanisme selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le porte-contact (1) est constitué de deux flasques (2,3) en métal découpé susceptibles d'être réunis, notamment par sertissage, et possédant des lumières (8) avec la rampe (10) pour l'arc-boutement de la biellette (36) et un prolongement d'échappement de biellette (9).Mechanism according to any one of claims 1 to 7, characterized in that the contact carrier (1) consists of two flanges (2,3) of cut metal capable of being joined, in particular by crimping, and having lights (8) with the ramp (10) for the bracing of the link (36) and an extension of the link exhaust (9). Mécanisme selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le cliquet (25) est réalisé en métal découpé et est rendu solidaire du porte-contact (1), ledit cliquet présentant un bras (29) pour repousser positivement la biellette (36).Mechanism according to any one of Claims 1 to 8, characterized in that the pawl (25) is made of cut metal and is made integral with the contact carrier (1), said pawl having an arm (29) for positively repelling the link (36). Mécanisme selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le levier déclencheur (19), solidaire du cliquet (25), porte un ergot latéral (22) coopérant avec le bras libre du ressort de rappel (37) de l'organe d'actionnement (34).Mechanism according to any one of Claims 1 to 9, characterized in that the trigger lever (19), integral with the pawl (25), carries a lateral lug (22) cooperating with the free arm of the return spring (37) of the actuating member (34). Disjoncteur caractérisé en ce qu'il comporte un mécanisme selon l'une quelconque des revendications précédentes.Circuit breaker characterized in that it comprises a mechanism according to any one of the preceding claims.
EP92400634A 1991-03-29 1992-03-11 Locking mechanism for circuit breaker Expired - Lifetime EP0506503B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR919103863A FR2674679B1 (en) 1991-03-29 1991-03-29 LOCK MECHANISM FOR CIRCUIT BREAKER.
FR9103863 1991-03-29

Publications (2)

Publication Number Publication Date
EP0506503A1 true EP0506503A1 (en) 1992-09-30
EP0506503B1 EP0506503B1 (en) 1995-07-12

Family

ID=9411289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92400634A Expired - Lifetime EP0506503B1 (en) 1991-03-29 1992-03-11 Locking mechanism for circuit breaker

Country Status (5)

Country Link
EP (1) EP0506503B1 (en)
AT (1) ATE125062T1 (en)
DE (1) DE69203368T2 (en)
ES (1) ES2075638T3 (en)
FR (1) FR2674679B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313207A1 (en) * 1993-04-22 1994-10-27 Kopp Heinrich Ag Miniature circuit breaker
EP0708461A1 (en) * 1994-10-18 1996-04-24 Bticino S.P.A. A high performance automatic switch
WO1998053473A1 (en) * 1997-05-20 1998-11-26 Gewiss S.P.A. Kinematic system for actuating the movable contact of automatic electric breakers
EP1816665A1 (en) 2006-02-03 2007-08-08 Hager-Electro SAS Latch mechanism with movable pivoting axis
FR2928774A1 (en) * 2008-03-12 2009-09-18 Hager Electro S A S Soc Par Ac Lock mechanism for e.g. circuit breaker, has springs implementing pressure support of each movable contact on fixed contacts fixed in displacement rod and/or elastic deformation rod
EP2899739A4 (en) * 2012-09-20 2016-06-08 Noark Electrics Shanghai Co Ltd Minitype breaker with high stability
CN108565138A (en) * 2018-06-08 2018-09-21 苏州华之杰电讯股份有限公司 A kind of switch contact group mechanism
CN109616385A (en) * 2018-12-25 2019-04-12 浙江零壹智能电器研究院有限公司 Miniature circuit breaker operating mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325501A1 (en) * 1988-01-20 1989-07-26 Hager Electro S.A. Automatic switches, in particular differential switches and circuit breakers
EP0338930A1 (en) * 1988-04-22 1989-10-25 Hager Electro S.A. Circuit breakers or differential circuit breakers
WO1991000605A1 (en) * 1989-06-29 1991-01-10 Square D Company Unitary breaker assembly for a circuit breaker
EP0412953A2 (en) * 1989-08-08 1991-02-13 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Automatic cut-out switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325501A1 (en) * 1988-01-20 1989-07-26 Hager Electro S.A. Automatic switches, in particular differential switches and circuit breakers
EP0338930A1 (en) * 1988-04-22 1989-10-25 Hager Electro S.A. Circuit breakers or differential circuit breakers
WO1991000605A1 (en) * 1989-06-29 1991-01-10 Square D Company Unitary breaker assembly for a circuit breaker
EP0412953A2 (en) * 1989-08-08 1991-02-13 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Automatic cut-out switch

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499007A (en) * 1993-04-22 1996-03-12 Heinrich Kopp Ag Circuit breaker
DE4313207A1 (en) * 1993-04-22 1994-10-27 Kopp Heinrich Ag Miniature circuit breaker
EP0708461A1 (en) * 1994-10-18 1996-04-24 Bticino S.P.A. A high performance automatic switch
WO1998053473A1 (en) * 1997-05-20 1998-11-26 Gewiss S.P.A. Kinematic system for actuating the movable contact of automatic electric breakers
CN101410926B (en) * 2006-02-03 2013-04-17 黑格电子股份有限公司 Latch mechanism with movable pivoting axis
EP1816665A1 (en) 2006-02-03 2007-08-08 Hager-Electro SAS Latch mechanism with movable pivoting axis
WO2007088284A1 (en) * 2006-02-03 2007-08-09 Hager-Electro Sas Mobile-spindle lock mechanism
AU2007211406B2 (en) * 2006-02-03 2011-01-27 Hager-Electro Sas Mobile-spindle lock mechanism
FR2928774A1 (en) * 2008-03-12 2009-09-18 Hager Electro S A S Soc Par Ac Lock mechanism for e.g. circuit breaker, has springs implementing pressure support of each movable contact on fixed contacts fixed in displacement rod and/or elastic deformation rod
EP2899739A4 (en) * 2012-09-20 2016-06-08 Noark Electrics Shanghai Co Ltd Minitype breaker with high stability
CN108565138A (en) * 2018-06-08 2018-09-21 苏州华之杰电讯股份有限公司 A kind of switch contact group mechanism
CN108565138B (en) * 2018-06-08 2023-12-12 苏州华之杰电讯股份有限公司 Switch contact group mechanism
CN109616385A (en) * 2018-12-25 2019-04-12 浙江零壹智能电器研究院有限公司 Miniature circuit breaker operating mechanism

Also Published As

Publication number Publication date
EP0506503B1 (en) 1995-07-12
FR2674679A1 (en) 1992-10-02
DE69203368D1 (en) 1995-08-17
ATE125062T1 (en) 1995-07-15
DE69203368T2 (en) 1996-01-11
FR2674679B1 (en) 1994-06-17
ES2075638T3 (en) 1995-10-01

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