EP3249673A1 - Mechanism for signalling an electrical fault in an electric protection device, and electric protection device including such a mechanism - Google Patents

Mechanism for signalling an electrical fault in an electric protection device, and electric protection device including such a mechanism Download PDF

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Publication number
EP3249673A1
EP3249673A1 EP17160475.4A EP17160475A EP3249673A1 EP 3249673 A1 EP3249673 A1 EP 3249673A1 EP 17160475 A EP17160475 A EP 17160475A EP 3249673 A1 EP3249673 A1 EP 3249673A1
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EP
European Patent Office
Prior art keywords
lever
signaling
contacts
indicator
magnetic
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
EP17160475.4A
Other languages
German (de)
French (fr)
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EP3249673B1 (en
Inventor
Yves Belin
Emir BOUMEDIENE
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3249673A1 publication Critical patent/EP3249673A1/en
Application granted granted Critical
Publication of EP3249673B1 publication Critical patent/EP3249673B1/en
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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
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators
    • 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 device for signaling the triggering of an electrical protection device such as a circuit-breaker housed in an insulating casing enclosing a pair of fixed and movable contacts, said movable contact being able to be actuated either manually by a lever mechanically connected to a device for supporting the movable contact, said handle being pivotally mounted between a closed position and an open position of the contacts, either automatically via a triggering mechanism comprising a magnetic trigger capable of being activated at the occurrence a short-circuit fault and a thermal trip unit that can be activated when an overload fault occurs, said mobile contact support being rotatably mounted between an open position of the contacts and a closed position of the contacts; contacts and connected to the handle by a transmission means so as to form between the support and the handle a breakable mechanical connection, the activation of one of the triggers resulting in the breaking of the mechanical link causing the separation of the contacts, and so-called first signaling means able to trigger only on a short-circuit fault
  • this device comprises two signaling means respectively two indicators in the form of two lights, one LEDs are intended to indicate the presence of a magnetic fault, the other LEDs being intended to indicate any type of fault.
  • the present invention relates to a device for signaling an electrical fault in an electrical protection device, of simplified design, and an electrical protection device comprising such a device.
  • the subject of the present invention is a signaling device of the kind mentioned above, this device being characterized in that the said first signaling means comprise means for locking the aforementioned joystick in an intermediate position situated between the two positions of the handle respectively corresponding to an open position and to a closed position of the apparatus, when a magnetic fault occurs, these means being controlled by the movable core of the magnetic trigger.
  • these means comprise a so-called first lever, referred to as a return lever, mounted articulated around a fixed axis relative to the housing of the apparatus, this return lever comprising a first end portion intended to cooperate with the mobile core and a second end portion for cooperating with the base of the joystick.
  • the aforementioned return lever cooperates with the mobile core via a so-called second lever articulated relative to the housing of the apparatus, said second lever having a first end portion rotatably mounted around an axis integral with the movable core and a second end portion comprising a hooking element adapted to cooperate with a complementary shaped fastening element belonging to the aforementioned first end portion of the return lever, in such a way that the hooking position of the two levers relative to each other corresponds to a closed position of the contacts during normal operation of the device, and that when an original defect appears magnetic, the displacement of the movable core causes the disengagement of the two elements of attachment one relative to the other, this disengagement allowing the recall of the return lever in a locking position of the handle in the aforementioned intermediate position.
  • the aforementioned return lever comprises a so-called third end portion adapted to cooperate with an indicator so as to indicate the presence or absence of a defect of magnetic origin.
  • this indicator comprises a reset means adapted to be operated by a user so as to return the return lever in a hooking position with the lever said second, after locking the lever in the intermediate position, this to release the joystick and allow the continued movement to the open position. This prevents the device from reclosing if the reset has not been performed.
  • this indicator is rotatably mounted relative to the housing of the apparatus, said indicator cooperating with said so-called third end portion of the return lever and having a surface visible to a user through an opening of the housing of the apparatus, said visible surface having means for indicating the presence or absence of a magnetic defect as a function of the rotating position of said indicator.
  • this indicator comprises at least a colored surface portion on its visible surface, the appearance of this color through the opening of the housing indicating the occurrence of a magnetic fault.
  • this third end portion comprises a rod comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, so that the rotation drive of the return lever in one direction causes rotation in an opposite direction of the indicator.
  • this reset means comprises a finger element projecting from said aforementioned surface of the indicator.
  • this third end portion comprises an arm comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, in such a way that the drive in rotation of the return lever in one direction causes a rotation in the opposite direction of the indicator.
  • the present invention also relates to an electrical protection apparatus comprising a signaling device comprising the aforementioned characteristics taken alone or in combination.
  • this apparatus comprises a signaling device comprising the aforementioned features taken alone or in combination, and a so-called second signaling means, able to signal the triggered state of the device whatever the type of defect. , the activation of the two signaling means signaling a magnetic type fault, while the activation of a single signaling means signaling an overload fault.
  • this device is a circuit breaker.
  • this control device comprises a support device 3 of the mobile contact 4 of the device, this mobile contact 4 cooperating with a fixed contact 5.
  • An opening 7 is provided in the front face 8 of the housing for the passage of a lever 6 mounted pivotally limited on an axis 11 of the housing between a closed position in which the contacts 4,5 are closed, and a position of opening corresponding to the separation of the contacts.
  • the lever 6 is equipped with an internal base 9 coupled to a transmission rod 10 to form a toggle device whose articulation 12 is eccentric with respect to the fixed axis 11 of the lever 6.
  • the lever 6 is biased in the trigonometric direction towards the position of opening of the contacts by a return spring (not shown).
  • the fixed contact 5 is secured to the casing of the electromagnetic release 13.
  • the movable contact 4 is fixed to the support device 3 of the movable contact 4, said support 3 being articulated on a pivot 14, the rotating plate 15 being rotatably mounted around the same pivot 14.
  • a breakable mechanical connection is provided between the transmission link 10 and the drive plate of the contact support device 3 4. In the locked position, the connection allows the manual control of the mechanism by the lever 6.
  • the displacement of the trigger lever 16 to the triggered position under the action of the triggers, causes the momentary rupture of the mechanical link, causing the automatic trigger mechanism , independently of the handle 6.
  • the trigger lever 16 is associated with a return spring for ensuring the automatic restoration of the mechanical link when the handle 6 is actuated to the open position, following a triggering of the fault mechanism .
  • the breakable mechanical link comprises a hook 19 mounted pivotably on an axis 20 of the plate 15.
  • the spout 21 of the hook 19 cooperates in the locked position of the link with a retaining catch 22 ( fig.4 )
  • the transmission link 10 is coupled to the hook 19 and the plate 15 at a hinge point 23 that can move when triggered in two consecutive openings 24 and 26 of the plate. 15.
  • This articulation point 23 is located between the hinge axis 20 ( fig.3 ) of the hook 19 on the plate and the spout 21 ( fig.4 ) of the hook hook.
  • the link constitutes a reduction stage in the kinematic chain of the mechanism, allowing a reduction of the triggering force from the magnetothermal release.
  • the hook 19 also has a bean-shaped opening or V 25 which, with the openings 24 and 26 of the plate, are intended to allow the rotation of the contact holder plate 15, during a trip, while the link 10 is blocked by the handle 6, itself held in the closed position of the contacts.
  • the opening 26 provided in the plate 15 also guides the stroke of the link when the handle returns to the open position of the contacts after a trip.
  • the two openings 24,26 of the plate 15 extend relative to each other so as to form a V.
  • the device for signaling a fault comprises a set of two levers respectively a so-called first or return lever 27 intended to cooperate with the handle 6, and a said second lever 28 intended to cooperate with the movable core 29.
  • This lever said second 28 is mounted articulated about a fixed axis 30 relative to the housing of the apparatus, said lever having two parts 28a end, 28b located on either side of said axis 30.
  • One of the end portion, said first 28a of the lever is articulated around an end portion 29a of the movable core 29 of the electromagnetic release 13, this end portion of the movable core being located opposite the portion of the striker 18 cooperating with the release lever 16, while the other end portion 28b of the lever, said second part end member 28b, comprises a hooking element 33.
  • This hooking element 33 is intended to cooperate with a complementary shaped fastening element 34 belonging to said first lever or return lever 27, which return lever 27 is mounted artic 25, the latch position in the latching position between the two levers 27,28, the rotation of the second lever 28 in the clockwise direction causes the rotation of the return lever 27 counterclockwise.
  • this return lever 27 comprises three end portions, namely respectively a first portion 27a comprising the aforementioned fastening element 33, a second portion 27b intended to cooperate with a signaling means 39 of a defect of magnetic origin, and a third portion 27c for cooperating with the lever 6 as will be explained in the following.
  • This second portion 27b comprises a rod 37 having at its free end an axis 37a adapted to cooperate with a groove 39a belonging to an indicator element 39, which indicator 39 is rotatably mounted relative to another fixed axis 39b of the housing, such that way that the rotation of the return lever 27 causes a corresponding rotation in the opposite direction of the indicator 39.
  • This indicator 39 ( fig.5 ) has a tubular portion 39c, from which extend, on either side of the aforementioned axis 39b, a U-shaped portion 39d and a finger element 39e.
  • the third part 27c of the return lever 27 comprises a branch 38a having at its free end a substantially flat surface 38b able to cooperate with a part of the base 9 of the lever 6.
  • the control device 2 is in an open position of the contacts 4,5, the lever 6 being in the open position. In this position, the striker 18 is retracted inside the coil and the movable core 29 is in a position at most away from said coil.
  • the hooking system is activated between the two levers 27,28, the hooking element 34 of the said second lever 28 being engaged with the corresponding fastening element 33 belonging to the return lever 27, so that the 39 signaling means does not report any magnetic fault.
  • the lever 6 is actuated to effect the closure of the contacts 4,5 ( fig.2 ), it moves the rod 10 which bears on the plate 15 and the hook 19.
  • the hook 19 is locked on the bar (or lever) trigger.
  • the rod 10 bears on the plate 15 and the hook 19, rotates the plate about its axis 14 until the contacts 4,5 close.
  • the rod continues to travel until the dead center of the toggle formed by the handle 6 and the link 10 is crossed.
  • the mechanism takes the equilibrium position which keeps the contacts closed.
  • the passage of the device from the open position ( fig.1 ) at the closed position ( fig.2 ) does not cause any change in the position of the signaling means 39, since the firing pin 18, and therefore the movable core, has not been set in motion.
  • the handle 6 is actuated from the closed position illustrated on the figure 2 until it crosses the dead center of the knee in the other direction.
  • the mechanism then reaches the equilibrium position, the contacts being open, when the handle reaches the end of its stroke, position represented on the figure 1 .
  • the trigger bar 16 is actuated by the striker 18, as shown in FIG. figure 3 the hook 19 is unlocked, but the lever 6 does not return immediately to its open position.
  • the mobile core 29 unlocks the hooking between the two levers 27,28.
  • the balance of forces exerted by the rod 10 on the mechanism is broken.
  • the plate 15 rotates about its axis 14 and opens the contacts, the position shown on the figure 4 .
  • the opening 25 provided inside the hook 19, allows the rotation of the hook about the axis 20 and this opening 25 of the hook and the openings 24,26 of the plate 15, allow the rotation of the plate, the joystick is still maintained in the closed contacts position.
  • Unlocking the hooking between the two levers 27,28 causes the rotation of the return lever 27 in the clockwise direction under the effect of a not shown spring recalling the return lever 27 in the direction of the lever 6, this movement the return lever driving the indicator 39 to a position in which it indicates the presence of a magnetic fault.
  • the spring of the handle 6 brings it to the open position of the contacts and the link 10 returns the hook 19 to the initial position.
  • the polarization spring of the hook 19 and resetting of the bar 16 places them in a position that does not allow the hook to be locked on the bar when the lever is actuated to close the contacts.
  • the openings 24,26 provided in the plate 15 participate in the guide of the rod 10 so as to bring it back into position on the platen.
  • the handle 6 clings via its base 9 to the second fastening element 34 forming a pawl, which is released from its engagement with the second lever 28.
  • the signaling means constituted by the indicator 39 then signals the presence of a defect of magnetic origin by a color change occurring on the outer surface portion 39f of the tubular portion 39c, this outer surface portion 39f being located at right of the aforementioned finger 39th, looking from the front figure 5 .
  • the signaling will only appear on the pole in default.
  • the deletion of the signaling of the magnetic origin fault will be done by resetting the so-called secondary lever 39, formed by the aforementioned indicator, this resetting being effected by a driving action in rotation of said secondary lever by the user clockwise as shown on the figure 6 .
  • the invention applies to any electrical appliance comprising a mechanism of the type mentioned above, such as a circuit breaker, a switch, a differential switch, a disconnector, auxiliary contacts etc .

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Abstract

La présente invention concerne un dispositif de signalisation du déclenchement d'un appareil de protection électrique comportant un contact mobile (4) pouvant être actionné soit manuellement par une manette (6) reliée mécaniquement à un dispositif de support (3) du contact mobile (4), soit automatiquement par l'intermédiaire d'un mécanisme de déclenchement comportant un déclencheur magnétique (13) à noyau mobile (29) et un déclencheur thermique, ledit support (3) de contact mobile (4) étant monté en rotation entre une position d'ouverture des contacts (4,5) et une position de fermeture des contacts et relié à la manette (6) par un moyen de transmission de manière à former une liaison mécanique brisable, l'activation de l'un des déclencheurs entraînant la rupture de la liaison mécanique entraînant la séparation des contacts (4,5), et des moyens de signalisation dits premiers S aptes à ne déclencher que sur un défaut de court-circuit. Ce dispositif est caractérisé en ce que les moyens de signalisation dits premiers S comportent des moyens pour bloquer la manette précitée (6) dans une position intermédiaire située entre les deux positions de la manette correspondant respectivement à une position ouverte et à une position fermée des contacts (4,5), lors de l'apparition d'un défaut d'origine magnétique, ces moyens étant commandés par le noyau mobile (29) du déclencheur magnétique (13).The present invention relates to a device for signaling the triggering of an electrical protection device comprising a movable contact (4) operable either manually by a handle (6) mechanically connected to a support device (3) of the movable contact (4). ), or automatically via a triggering mechanism comprising a movable core magnetic trigger (13) and a thermal actuator, said movable contact carrier (3) being rotatably mounted between a position opening of the contacts (4,5) and a closing position of the contacts and connected to the handle (6) by a transmission means so as to form a breakable mechanical connection, the activation of one of the triggers causing the breaking of the mechanical link resulting in the separation of the contacts (4,5), and so-called first signaling means S able to trigger only on a short-circuit fault. This device is characterized in that the said first signaling means S comprise means for locking the aforesaid lever (6) in an intermediate position between the two positions of the lever respectively corresponding to an open position and to a closed position of the contacts (4,5), at the occurrence of a magnetic fault, these means being controlled by the movable core (29) of the magnetic trigger (13).

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un dispositif de signalisation du déclenchement d'un appareil de protection électrique tel un disjoncteur logé dans un boîtier isolant renfermant une paire de contacts fixe et mobile, ledit contact mobile pouvant être actionné soit manuellement par une manette reliée mécaniquement à un dispositif de support du contact mobile, ladite manette étant montée à pivotement entre une position de fermeture et une position d'ouverture des contacts, soit automatiquement par l'intermédiaire d'un mécanisme de déclenchement comportant un déclencheur magnétique apte à être activé lors de la survenue d'un défaut de court-circuit et un déclencheur thermique apte à être activé lors de la survenue d'un défaut de surcharge, ledit support de contact mobile étant monté en rotation entre une position d'ouverture des contacts et une position de fermeture des contacts et relié à la manette par un moyen de transmission de manière à former entre le support et la manette une liaison mécanique brisable, l'activation de l'un des déclencheurs entraînant la rupture de la liaison mécanique entraînant la séparation des contacts, et des moyens de signalisation dits premiers aptes à ne déclencher que sur un défaut de court-circuit, ainsi qu'un appareil de protection électrique comportant un tel dispositif.The present invention relates to a device for signaling the triggering of an electrical protection device such as a circuit-breaker housed in an insulating casing enclosing a pair of fixed and movable contacts, said movable contact being able to be actuated either manually by a lever mechanically connected to a device for supporting the movable contact, said handle being pivotally mounted between a closed position and an open position of the contacts, either automatically via a triggering mechanism comprising a magnetic trigger capable of being activated at the occurrence a short-circuit fault and a thermal trip unit that can be activated when an overload fault occurs, said mobile contact support being rotatably mounted between an open position of the contacts and a closed position of the contacts; contacts and connected to the handle by a transmission means so as to form between the support and the handle a breakable mechanical connection, the activation of one of the triggers resulting in the breaking of the mechanical link causing the separation of the contacts, and so-called first signaling means able to trigger only on a short-circuit fault , as well as an electrical protection apparatus comprising such a device.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

On connaît le document EP 2 975 628 décrivant un dispositif tel que décrit précédemment. Dans ce document, ce dispositif comporte deux moyens de signalisation respectivement deux indicateurs sous la forme de deux voyants, l'un des voyants étant destiné à signaler la présence d'un défaut d'origine magnétique, l'autre des voyants étant destiné à indiquer tout type de défaut.We know the document EP 2,975,628 describing a device as described above. In this document, this device comprises two signaling means respectively two indicators in the form of two lights, one LEDs are intended to indicate the presence of a magnetic fault, the other LEDs being intended to indicate any type of fault.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention concerne un dispositif de signalisation d'un défaut électrique dans un appareil de protection électrique, de conception simplifiée, ainsi qu'un appareil de protection électrique comportant un tel dispositif.The present invention relates to a device for signaling an electrical fault in an electrical protection device, of simplified design, and an electrical protection device comprising such a device.

A cet effet, la présente invention a pour objet un dispositif de signalisation du genre précédemment mentionné, ce dispositif étant caractérisé en ce que les moyens de signalisation dits premiers comportent des moyens pour bloquer la manette précitée dans une position intermédiaire située entre les deux positions de la manette correspondant respectivement à une position ouverte et à une position fermée de l'appareil, lors de l'apparition d'un défaut d'origine magnétique, ces moyens étant commandés par le noyau mobile du déclencheur magnétique.For this purpose, the subject of the present invention is a signaling device of the kind mentioned above, this device being characterized in that the said first signaling means comprise means for locking the aforementioned joystick in an intermediate position situated between the two positions of the handle respectively corresponding to an open position and to a closed position of the apparatus, when a magnetic fault occurs, these means being controlled by the movable core of the magnetic trigger.

Selon une caractéristique particulière, ces moyens comportent un levier dit premier, dit de renvoi, monté articulé autour d'un axe fixe par rapport au boîtier de l'appareil, ce levier de renvoi comportant une première partie d'extrémité destinée à coopérer avec le noyau mobile et une seconde partie d'extrémité destinée à coopérer avec l'embase de la manette.According to a particular characteristic, these means comprise a so-called first lever, referred to as a return lever, mounted articulated around a fixed axis relative to the housing of the apparatus, this return lever comprising a first end portion intended to cooperate with the mobile core and a second end portion for cooperating with the base of the joystick.

Selon une caractéristique particulière, le levier de renvoi précité coopère avec le noyau mobile par l'intermédiaire d'un levier dit second monté articulé par rapport au boîtier de l'appareil, ledit second levier comportant une première partie d'extrémité montée à rotation autour d'un axe solidaire du noyau mobile et une seconde partie d'extrémité comportant un élément d'accrochage apte à coopérer avec un élément d'accrochage de forme complémentaire appartenant à la première partie d'extrémité précitée du levier de renvoi, de telle manière que la position d'accrochage des deux leviers l'un par rapport à l'autre corresponde à une position fermée des contacts lors d'un fonctionnement normal de l'appareil, et que lors de l'apparition d'un défaut d'origine magnétique, le déplacement du noyau mobile entraîne le désengagement des deux éléments d'accrochage l'un par rapport à l'autre, ce désengagement permettant le rappel du levier de renvoi dans une position de blocage de la manette dans la position intermédiaire précitée.According to a particular characteristic, the aforementioned return lever cooperates with the mobile core via a so-called second lever articulated relative to the housing of the apparatus, said second lever having a first end portion rotatably mounted around an axis integral with the movable core and a second end portion comprising a hooking element adapted to cooperate with a complementary shaped fastening element belonging to the aforementioned first end portion of the return lever, in such a way that the hooking position of the two levers relative to each other corresponds to a closed position of the contacts during normal operation of the device, and that when an original defect appears magnetic, the displacement of the movable core causes the disengagement of the two elements of attachment one relative to the other, this disengagement allowing the recall of the return lever in a locking position of the handle in the aforementioned intermediate position.

Selon une autre caractéristique, le levier de renvoi précité comporte une partie d'extrémité dite troisième apte à coopérer avec un indicateur de manière à signaler la présence ou non d'un défaut d'origine magnétique.According to another characteristic, the aforementioned return lever comprises a so-called third end portion adapted to cooperate with an indicator so as to indicate the presence or absence of a defect of magnetic origin.

Selon une autre caractéristique, cet indicateur comporte un moyen de réinitialisation apte à être manoeuvré par un utilisateur de manière à rappeler le levier de renvoi dans une position d'accrochage avec le levier dit second, après le blocage de la manette en position intermédiaire, ceci afin de libérer la manette et permettre la poursuite de son déplacement vers la position ouverte.
Ceci empêche la refermeture de l'appareil si la réinitialisation n'a pas été réalisée.According to another characteristic, this indicator comprises a reset means adapted to be operated by a user so as to return the return lever in a hooking position with the lever said second, after locking the lever in the intermediate position, this to release the joystick and allow the continued movement to the open position.
This prevents the device from reclosing if the reset has not been performed.

Selon une autre caractéristique, cet indicateur est monté rotatif par rapport au boitier de l'appareil, ledit indicateur coopérant avec la partie d'extrémité dite troisième précitée du levier de renvoi et comportant une surface visible par un utilisateur à travers une ouverture du boîtier de l'appareil, cette surface visible comportant un moyen pour indiquer la présence ou l'absence d'un défaut d'origine magnétique en fonction de la position en rotation de cet indicateur.According to another characteristic, this indicator is rotatably mounted relative to the housing of the apparatus, said indicator cooperating with said so-called third end portion of the return lever and having a surface visible to a user through an opening of the housing of the apparatus, said visible surface having means for indicating the presence or absence of a magnetic defect as a function of the rotating position of said indicator.

Selon une autre caractéristique, cet indicateur comporte au moins une portion de surface colorée sur sa surface visible, l'apparition de cette couleur à travers l'ouverture du boîtier indiquant la survenue d'un défaut d'origine magnétique.According to another characteristic, this indicator comprises at least a colored surface portion on its visible surface, the appearance of this color through the opening of the housing indicating the occurrence of a magnetic fault.

Selon une caractéristique particulière, cette troisième partie d'extrémité comporte une tige comportant un axe, cet axe étant apte à coopérer avec une rainure prévue dans l'indicateur précité, de telle manière que l'entraînement en rotation du levier de renvoi dans un sens entraîne une rotation dans un sens opposé de l'indicateur.According to a particular characteristic, this third end portion comprises a rod comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, so that the rotation drive of the return lever in one direction causes rotation in an opposite direction of the indicator.

Avantageusement, ce moyen de réinitialisation comporte un élément formant doigt en saillie sur ladite surface précitée de l'indicateur.Advantageously, this reset means comprises a finger element projecting from said aforementioned surface of the indicator.

Selon une autre caractéristique cette troisième partie d'extrémité comporte un bras comportant un axe, cet axe étant apte à coopérer avec un rainure prévue dans l'indicateur précité, de telle manière que l'entraînement en rotation du levier de renvoi dans un sens entraîne une rotation dans un sens opposé de l'indicateur.According to another characteristic, this third end portion comprises an arm comprising an axis, this axis being able to cooperate with a groove provided in the aforementioned indicator, in such a way that the drive in rotation of the return lever in one direction causes a rotation in the opposite direction of the indicator.

La présente invention a encore pour objet un appareil de protection électrique comportant un dispositif de signalisation comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The present invention also relates to an electrical protection apparatus comprising a signaling device comprising the aforementioned characteristics taken alone or in combination.

Selon une autre caractéristique, cet appareil comporte un dispositif de signalisation comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison, ainsi qu'un moyen de signalisation dit second, apte à signaler l'état déclenché de l'appareil quelque soit le type de défaut, l'activation des deux moyens de signalisation signalant un défaut du type magnétique, tandis que l'activation d'un seul moyen de signalisation signalant un défaut de surcharge.According to another characteristic, this apparatus comprises a signaling device comprising the aforementioned features taken alone or in combination, and a so-called second signaling means, able to signal the triggered state of the device whatever the type of defect. , the activation of the two signaling means signaling a magnetic type fault, while the activation of a single signaling means signaling an overload fault.

Selon une réalisation particulière, cet appareil est un disjoncteur.In a particular embodiment, this device is a circuit breaker.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La figure 1 est une vue partielle en plan, illustrant un appareil de protection électrique comportant un dispositif de signalisation d'un défaut électrique selon l'invention, en position ouverte des contacts de l'appareil,
  • La figure 2 est une vue similaire à la précédente, en position fermée des contacts de l'appareil,
  • La figure 3 est une vue similaire à la précédente, lors de l'apparition d'un défaut d'origine magnétique, l'appareil étant encore en position fermée,
  • La figure 4 est une vue similaire à la précédente, après l'ouverture du mécanisme de l'appareil,
  • La figure 5 est une vue similaire à la précédente, en position de signalisation du défaut, et
  • La figure 6 est une vue similaire aux précédentes, destinée à illustrer la manoeuvre destinée à supprimer la signalisation du défaut.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a partial plan view, illustrating an electric protection apparatus comprising a device for signaling an electrical fault according to the invention, in the open position of the contacts of the apparatus,
  • The figure 2 is a view similar to the previous one, in the closed position of the contacts of the apparatus,
  • The figure 3 is a view similar to the previous one, when the appearance of a magnetic origin fault, the apparatus still being in the closed position,
  • The figure 4 is a similar view to the previous, after opening the mechanism of the device,
  • The figure 5 is a view similar to the previous one, in the signaling position of the defect, and
  • The figure 6 is a view similar to the previous ones, intended to illustrate the maneuver intended to suppress the signaling of the defect.

Sur les figures, on voit un disjoncteur électrique miniature multipolaire à boîtier isolant 1 moulé connu notamment par le brevet EP 1 975 971 et comportant par pôle, un dispositif de commande 2 des contacts de l'appareil, ce dispositif de commande comportant un dispositif de signalisation d'un défaut selon l'invention. De manière connue en soi, ce dispositif de commande comporte un dispositif de support 3 du contact mobile 4 de l'appareil, ce contact mobile 4 coopérant avec un contact fixe 5.
Une ouverture 7 est prévue dans la face avant 8 du boîtier pour le passage d'une manette 6 montée à pivotement limité sur un axe 11 du boîtier entre une position de fermeture dans laquelle les contacts 4,5 sont fermés, et une position d'ouverture correspondant à la séparation des contacts. La manette 6 est équipée d'une embase interne 9 accouplée à une biellette de transmission 10 pour constituer un dispositif à genouillère dont l'articulation 12 se trouve excentrée par rapport à l'axe fixe 11 de la manette 6.
La manette 6 est sollicitée dans le sens trigonométrique vers la position d'ouverture des contacts par un ressort de rappel (non représenté). Le contact fixe 5 est solidarisé à la carcasse du déclencheur électromagnétique 13. Le contact mobile 4 est fixé au dispositif de support 3 du contact mobile 4, ledit support 3 étant articulé sur un pivot 14, la platine rotative 15 étant montée rotative autour du même pivot 14.
Un levier de déclenchement 16 piloté par le percuteur 18 du déclencheur électromagnétique 13 et la bilame du déclencheur thermique (non représenté) ou d'un auxiliaire externe, est monté à pivotement sur un axe 17 porté par la platine 15 avec un décalage prédéterminé par rapport au pivot précité 14.In the figures, we see a multipolar miniature electric circuit breaker with insulating casing 1 molded known in particular by the EP Patent 1,975,971 and comprising, by pole, a device 2 for controlling the contacts of the apparatus, this control device comprising a device for signaling a fault according to the invention. In a manner known per se, this control device comprises a support device 3 of the mobile contact 4 of the device, this mobile contact 4 cooperating with a fixed contact 5.
An opening 7 is provided in the front face 8 of the housing for the passage of a lever 6 mounted pivotally limited on an axis 11 of the housing between a closed position in which the contacts 4,5 are closed, and a position of opening corresponding to the separation of the contacts. The lever 6 is equipped with an internal base 9 coupled to a transmission rod 10 to form a toggle device whose articulation 12 is eccentric with respect to the fixed axis 11 of the lever 6.
The lever 6 is biased in the trigonometric direction towards the position of opening of the contacts by a return spring (not shown). The fixed contact 5 is secured to the casing of the electromagnetic release 13. The movable contact 4 is fixed to the support device 3 of the movable contact 4, said support 3 being articulated on a pivot 14, the rotating plate 15 being rotatably mounted around the same pivot 14.
A triggering lever 16 controlled by the striker 18 of the electromagnetic trip unit 13 and the bimetallic strip of the thermal trip unit (not shown) or of an external auxiliary, is pivotally mounted on an axis 17 carried by the plate 15 with a predetermined offset from to the aforementioned pivot 14.

Une liaison mécanique brisable est ménagée entre la biellette de transmission 10 et la platine 15 d'entraînement du dispositif de support 3 de contact 4.
En position verrouillée, la liaison autorise la commande manuelle du mécanisme par la manette 6. Le déplacement du levier de déclenchement 16 vers la position déclenchée sous l'action des déclencheurs, provoque la rupture momentanée de la liaison mécanique, entraînant le déclenchement automatique du mécanisme, indépendamment de la manette 6. Le levier de déclenchement 16 est associé à un ressort de rappel destiné à assurer le rétablissement automatique de la liaison mécanique lorsque la manette 6 est actionnée vers la position d'ouverture, suite à un déclenchement du mécanisme sur défaut.
La liaison mécanique brisable comporte un crochet 19 monté à pivotement sur un axe 20 de la platine 15. A l'opposé de cet axe, le bec 21 du crochet 19 coopère en position verrouillée de la liaison avec un cran de retenue 22 (fig.4) situé sur le bras du levier de déclenchement 16. La biellette de transmission 10 est accouplée au crochet 19 et à la platine 15 en un point d'articulation 23 susceptible de se déplacer lors du déclenchement dans deux ouvertures 24 et 26 consécutives de la platine 15. Ce point d'articulation 23 est situé entre l'axe d'articulation 20 (fig.3) du crochet 19 sur la platine et le bec 21 (fig.4) du crochet d'accrochage. La liaison constitue un étage démultiplicateur dans la chaîne cinématique du mécanisme, autorisant une réduction de l'effort de déclenchement en provenance du déclencheur magnétothermique.
Le crochet 19 comporte également une ouverture de forme en haricot ou de V 25 laquelle, avec les ouvertures 24 et 26 de la platine, sont destinées à autoriser la rotation de la platine porte-contact 15, lors d'un déclenchement, alors que la biellette 10 est bloquée par la manette 6, elle-même maintenue en position de fermeture des contacts.
L'ouverture 26 prévue dans la platine 15 permet également de guider la course de la biellette lorsque la manette revient en position d'ouverture des contacts, après un déclenchement. Les deux ouvertures 24,26 de la platine 15 s'étendent l'une par rapport à l'autre de manière à former un V.
Le dispositif de signalisation d'un défaut selon l'invention comporte un ensemble de deux leviers respectivement un levier dit premier 27 ou de renvoi destiné à coopérer avec la manette 6, et un levier dit second 28 destiné à coopérer avec le noyau mobile 29. Ce levier dit second 28 est monté articulé autour d'un axe 30 fixe par rapport au boîtier de l'appareil, ledit levier comportant deux parties d'extrémité 28a, 28b situées de part et d'autre dudit axe 30. L'une des parties d'extrémité, dite première 28a, de ce levier, est montée articulée autour d'une partie d'extrémité 29a du noyau mobile 29 du déclencheur électromagnétique 13, cette partie d'extrémité du noyau mobile étant située à l'opposé de la partie du percuteur 18 coopérant avec le levier de déclenchement 16, tandis que l'autre partie d'extrémité 28b de ce levier, dite seconde partie d'extrémité 28b, comporte un élément d'accrochage 33. Cet élément d'accrochage 33 est destiné à coopérer avec un élément d'accrochage de forme complémentaire 34 appartenant au levier dit premier ou levier de renvoi 27, lequel levier de renvoi 27 est monté articulé autour d'un axe 35 du boîtier de l'appareil, de telle manière que, en position d'accrochage entre les deux leviers 27,28, la rotation du second levier 28 dans le sens horaire entraîne la rotation du levier de renvoi 27 dans le sens anti-horaire. Ainsi (fig.4), ce levier de renvoi 27 comporte trois parties d'extrémité, à savoir respectivement une première partie 27a comportant l'élément d'accrochage précité 33, une seconde partie 27b destinée à coopérer avec un moyen de signalisation 39 d'un défaut d'origine magnétique, et une troisième partie 27c destinée à coopérer avec la manette 6 comme ceci sera expliqué dans ce qui suit. Cette seconde partie 27b comporte une tige 37 comportant à son extrémité libre un axe 37a apte à coopérer avec une rainure 39a appartenant à un élément formant indicateur 39, lequel indicateur 39 étant monté rotatif par rapport à un autre axe fixe 39b du boîtier, de telle manière que la rotation du levier de renvoi 27 entraîne une rotation correspondante en sens inverse de l'indicateur 39.
Cet indicateur 39 (fig.5) comporte une portion tubulaire 39c, à partir de laquelle s'étendent, de part et d'autre de l'axe précité 39b, une portion en U 39d et un élément formant doigt 39e.
La troisième partie 27c du levier de renvoi 27 comporte une branche 38a présentant à son extrémité libre une surface 38b sensiblement plane apte à coopérer avec une partie de l'embase 9 de la manette 6.A breakable mechanical connection is provided between the transmission link 10 and the drive plate of the contact support device 3 4.
In the locked position, the connection allows the manual control of the mechanism by the lever 6. The displacement of the trigger lever 16 to the triggered position under the action of the triggers, causes the momentary rupture of the mechanical link, causing the automatic trigger mechanism , independently of the handle 6. The trigger lever 16 is associated with a return spring for ensuring the automatic restoration of the mechanical link when the handle 6 is actuated to the open position, following a triggering of the fault mechanism .
The breakable mechanical link comprises a hook 19 mounted pivotably on an axis 20 of the plate 15. Opposite this axis, the spout 21 of the hook 19 cooperates in the locked position of the link with a retaining catch 22 ( fig.4 ) The transmission link 10 is coupled to the hook 19 and the plate 15 at a hinge point 23 that can move when triggered in two consecutive openings 24 and 26 of the plate. 15. This articulation point 23 is located between the hinge axis 20 ( fig.3 ) of the hook 19 on the plate and the spout 21 ( fig.4 ) of the hook hook. The link constitutes a reduction stage in the kinematic chain of the mechanism, allowing a reduction of the triggering force from the magnetothermal release.
The hook 19 also has a bean-shaped opening or V 25 which, with the openings 24 and 26 of the plate, are intended to allow the rotation of the contact holder plate 15, during a trip, while the link 10 is blocked by the handle 6, itself held in the closed position of the contacts.
The opening 26 provided in the plate 15 also guides the stroke of the link when the handle returns to the open position of the contacts after a trip. The two openings 24,26 of the plate 15 extend relative to each other so as to form a V.
The device for signaling a fault according to the invention comprises a set of two levers respectively a so-called first or return lever 27 intended to cooperate with the handle 6, and a said second lever 28 intended to cooperate with the movable core 29. This lever said second 28 is mounted articulated about a fixed axis 30 relative to the housing of the apparatus, said lever having two parts 28a end, 28b located on either side of said axis 30. One of the end portion, said first 28a of the lever, is articulated around an end portion 29a of the movable core 29 of the electromagnetic release 13, this end portion of the movable core being located opposite the portion of the striker 18 cooperating with the release lever 16, while the other end portion 28b of the lever, said second part end member 28b, comprises a hooking element 33. This hooking element 33 is intended to cooperate with a complementary shaped fastening element 34 belonging to said first lever or return lever 27, which return lever 27 is mounted artic 25, the latch position in the latching position between the two levers 27,28, the rotation of the second lever 28 in the clockwise direction causes the rotation of the return lever 27 counterclockwise. So ( fig.4 ), this return lever 27 comprises three end portions, namely respectively a first portion 27a comprising the aforementioned fastening element 33, a second portion 27b intended to cooperate with a signaling means 39 of a defect of magnetic origin, and a third portion 27c for cooperating with the lever 6 as will be explained in the following. This second portion 27b comprises a rod 37 having at its free end an axis 37a adapted to cooperate with a groove 39a belonging to an indicator element 39, which indicator 39 is rotatably mounted relative to another fixed axis 39b of the housing, such that way that the rotation of the return lever 27 causes a corresponding rotation in the opposite direction of the indicator 39.
This indicator 39 ( fig.5 ) has a tubular portion 39c, from which extend, on either side of the aforementioned axis 39b, a U-shaped portion 39d and a finger element 39e.
The third part 27c of the return lever 27 comprises a branch 38a having at its free end a substantially flat surface 38b able to cooperate with a part of the base 9 of the lever 6.

Le fonctionnement du dispositif de signalisation selon l'invention va être décrit ci-après en référence aux figures.
Sur la figure 1, le dispositif de commande 2 est dans une position ouverte des contacts 4,5, la manette 6 étant en position d'ouverture.
Dans cette position, le percuteur 18 est escamoté à l'intérieur de la bobine et le noyau mobile 29 se trouve dans une position éloignée au maximum de ladite bobine. Le système d'accrochage est activé entre les deux leviers 27,28, l'élément d'accrochage 34 du levier dit second 28 étant en prise avec l'élément d'accrochage correspondant 33 appartenant au levier de renvoi 27, de manière que le moyen de signalisation 39 ne signale aucun défaut d'origine magnétique. Lorsque la manette 6 est actionnée pour réaliser la fermeture des contacts 4,5 (fig.2), celle-ci déplace la biellette 10 qui vient en appui sur la platine 15 et sur le crochet 19. Le crochet 19 est verrouillé sur la barre (ou levier) de déclenchement. La biellette 10 en appui sur la platine 15 et sur le crochet 19, fait pivoter la platine autour de son axe 14 jusqu'à la fermeture des contacts 4,5.
La biellette poursuit sa course jusqu'au franchissement du point mort de la genouillère formée par la manette 6 et la biellette 10. Puis, le mécanisme prend la position d'équilibre qui maintient les contacts fermés. Le passage de l'appareil de la position ouverte (fig.1) à la position fermée (fig.2) n'entraîne aucune modification de la position du moyen de signalisation 39, car le percuteur 18, et donc le noyau mobile, n'a pas été mis en mouvement.The operation of the signaling device according to the invention will be described hereinafter with reference to the figures.
On the figure 1 , the control device 2 is in an open position of the contacts 4,5, the lever 6 being in the open position.
In this position, the striker 18 is retracted inside the coil and the movable core 29 is in a position at most away from said coil. The hooking system is activated between the two levers 27,28, the hooking element 34 of the said second lever 28 being engaged with the corresponding fastening element 33 belonging to the return lever 27, so that the 39 signaling means does not report any magnetic fault. When the lever 6 is actuated to effect the closure of the contacts 4,5 ( fig.2 ), it moves the rod 10 which bears on the plate 15 and the hook 19. The hook 19 is locked on the bar (or lever) trigger. The rod 10 bears on the plate 15 and the hook 19, rotates the plate about its axis 14 until the contacts 4,5 close.
The rod continues to travel until the dead center of the toggle formed by the handle 6 and the link 10 is crossed. Then, the mechanism takes the equilibrium position which keeps the contacts closed. The passage of the device from the open position ( fig.1 ) at the closed position ( fig.2 ) does not cause any change in the position of the signaling means 39, since the firing pin 18, and therefore the movable core, has not been set in motion.

Pour ouvrir les contacts 4,5 manuellement, la manette 6 est actionnée à partir de la position fermée illustrée sur la figure 2 jusqu'à ce qu'elle franchisse le point mort de la genouillère dans l'autre sens. Le mécanisme rejoint alors la position d'équilibre, les contacts étant ouverts, lorsque la manette atteint la fin de sa course, position représentée sur la figure 1.
Lorsque les contacts sont fermés et sous l'effet de l'apparition d'un défaut d'origine magnétique, la barre de déclenchement 16 est actionnée par le percuteur 18, tel qu'illustré sur la figure 3, le crochet 19 est déverrouillé, mais la manette 6 ne revient pas tout de suite vers sa position d'ouverture.
Dans un même temps, le noyau mobile 29 déverrouille l'accrochage entre les deux leviers 27,28.To open the contacts 4.5 manually, the handle 6 is actuated from the closed position illustrated on the figure 2 until it crosses the dead center of the knee in the other direction. The mechanism then reaches the equilibrium position, the contacts being open, when the handle reaches the end of its stroke, position represented on the figure 1 .
When the contacts are closed and under the effect of the appearance of a magnetic fault, the trigger bar 16 is actuated by the striker 18, as shown in FIG. figure 3 the hook 19 is unlocked, but the lever 6 does not return immediately to its open position.
At the same time, the mobile core 29 unlocks the hooking between the two levers 27,28.

L'équilibre des forces exercées par la biellette 10 sur le mécanisme est rompu. La platine 15 tourne autour de son axe 14 et elle ouvre les contacts, position représentée sur la figure 4. L'ouverture 25 prévue à l'intérieur du crochet 19, autorise la rotation du crochet autour de l'axe 20 et cette ouverture 25 du crochet ainsi que les ouvertures 24,26 de la platine 15, autorisent la rotation de la platine, la manette étant encore maintenue en position des contacts fermés.
Le déverrouillage de l'accrochage entre les deux leviers 27,28 entraîne la rotation du levier de renvoi 27 dans le sens horaire sous l'effet d'un ressort non représenté rappelant le levier de renvoi 27 en direction de la manette 6, ce mouvement du levier de renvoi entraînant l'indicateur 39 dans une position dans laquelle il indique la présence d'un défaut d'origine magnétique.
Puis dans un même temps, tel qu'illustré sur la figure 5, le ressort de la manette 6 ramène cette dernière vers la position ouverte des contacts et la biellette 10 ramène le crochet 19 en position initiale. Le ressort de polarisation du crochet 19 et de réarmement de la barre 16 les replace dans une position ne permettant pas le verrouillage du crochet sur la barre lorsque la manette sera actionnée pour refermer les contacts. Les ouvertures 24,26 prévues dans la platine 15 participent au guidage de la biellette 10 de façon à la ramener en position d'appui sur la platine.
Lors de son retour, la manette 6 s'accroche par l'intermédiaire de son embase 9 sur le second élément d'accrochage 34 formant cliquet, lequel étant libéré de son accrochage avec le second levier 28.
Le moyen de signalisation constitué par l'indicateur 39 signale alors la présence d'un défaut d'origine magnétique par un changement de couleur apparaissant sur la portion de surface extérieure 39f de la partie tubulaire 39c, cette portion de surface extérieure 39f étant située à droite du doigt précité 39e, en regardant de face la figure 5.
On notera que dans le cas d'un disjoncteur multipolaire, la signalisation n'apparaîtra que sur le pôle en défaut.
La suppression de la signalisation du défaut d'origine magnétique s'effectuera par réarmement de la manette 39 dite secondaire, formée par l'indicateur précité, ce réarmement s'effectuant par une action d'entraînement en rotation de ladite manette secondaire par l'utilisateur dans le sens horaire tel qu'illustré sur la figure 6. Cette rotation de la manette secondaire 39 dans le sens horaire entraînera la rotation dans le sens anti-horaire du levier de renvoi 27, ce qui entraînera la libération de l'accrochage entre le levier de renvoi 27 et la manette principale 6. Cette libération de cet accrochage permettra le retour de la manette principale du disjoncteur en position ouverte.
L'invention s'applique à tout appareil électrique comportant un mécanisme du type précédemment mentionné, tels un disjoncteur, un interrupteur, un interrupteur différentiel, un sectionneur, des contacts auxiliaires etc.....The balance of forces exerted by the rod 10 on the mechanism is broken. The plate 15 rotates about its axis 14 and opens the contacts, the position shown on the figure 4 . The opening 25 provided inside the hook 19, allows the rotation of the hook about the axis 20 and this opening 25 of the hook and the openings 24,26 of the plate 15, allow the rotation of the plate, the joystick is still maintained in the closed contacts position.
Unlocking the hooking between the two levers 27,28 causes the rotation of the return lever 27 in the clockwise direction under the effect of a not shown spring recalling the return lever 27 in the direction of the lever 6, this movement the return lever driving the indicator 39 to a position in which it indicates the presence of a magnetic fault.
Then at the same time, as illustrated on the figure 5 , the spring of the handle 6 brings it to the open position of the contacts and the link 10 returns the hook 19 to the initial position. The polarization spring of the hook 19 and resetting of the bar 16 places them in a position that does not allow the hook to be locked on the bar when the lever is actuated to close the contacts. The openings 24,26 provided in the plate 15 participate in the guide of the rod 10 so as to bring it back into position on the platen.
When it returns, the handle 6 clings via its base 9 to the second fastening element 34 forming a pawl, which is released from its engagement with the second lever 28.
The signaling means constituted by the indicator 39 then signals the presence of a defect of magnetic origin by a color change occurring on the outer surface portion 39f of the tubular portion 39c, this outer surface portion 39f being located at right of the aforementioned finger 39th, looking from the front figure 5 .
Note that in the case of a multipole circuit breaker, the signaling will only appear on the pole in default.
The deletion of the signaling of the magnetic origin fault will be done by resetting the so-called secondary lever 39, formed by the aforementioned indicator, this resetting being effected by a driving action in rotation of said secondary lever by the user clockwise as shown on the figure 6 . This rotation of the secondary lever 39 in the clockwise direction will cause the counter-clockwise rotation of the return lever 27, which will release the hooking between the return lever 27 and the main lever 6. This release of this hooking will allow the return of the main handle of the circuit breaker in the open position.
The invention applies to any electrical appliance comprising a mechanism of the type mentioned above, such as a circuit breaker, a switch, a differential switch, a disconnector, auxiliary contacts etc .....

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont réalisées suivant son esprit.On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are carried out according to its spirit.

Claims (12)

Dispositif de signalisation du déclenchement d'un appareil de protection électrique tel un disjoncteur logé dans un boîtier isolant renfermant une paire de contacts fixe et mobile, ledit contact mobile pouvant être actionné soit manuellement par une manette reliée mécaniquement à un dispositif de support du contact mobile, ladite manette étant montée à pivotement entre une position de fermeture et une position d'ouverture des contacts, soit automatiquement par l'intermédiaire d'un mécanisme de déclenchement comportant un déclencheur magnétique à noyau mobile apte à être activé lors de la survenue d'un défaut de court-circuit et un déclencheur thermique apte à être activé lors de la survenue d'un défaut de surcharge, ledit support de contact mobile étant monté en rotation entre une position d'ouverture des contacts et une position de fermeture des contacts et relié à la manette par un moyen de transmission de manière à former entre le support et la manette une liaison mécanique brisable, l'activation de l'un des déclencheurs entraînant la rupture de la liaison mécanique entraînant la séparation des contacts, et des moyens de signalisation dits premiers aptes à ne déclencher que sur un défaut de court-circuit,
caractérisé en ce que les moyens de signalisation dits premiers S comportent des moyens pour bloquer la manette précitée (6) dans une position intermédiaire située entre les deux positions de la manette correspondant respectivement à une position ouverte et à une position fermée de l'appareil, lors de l'apparition d'un défaut d'origine magnétique, ces moyens étant commandés par le noyau mobile (29) du déclencheur magnétique (13).Apparatus for signaling the triggering of an electrical protection device such as a circuit-breaker housed in an insulating casing enclosing a pair of fixed and movable contacts, said movable contact being able to be actuated either manually by a lever mechanically connected to a device for supporting the movable contact said lever being pivotally mounted between a closed position and an open position of the contacts, either automatically via a triggering mechanism comprising a movable core magnetic trigger adapted to be activated upon occurrence of a short-circuit fault and a thermal trip unit that can be activated when an overload fault occurs, said mobile contact support being rotatably mounted between a position for opening the contacts and a position for closing the contacts and connected to the handle by means of transmission so as to form between the support and the handle a breakable mechanical connection, the activation of one of the triggers causing the breaking of the mechanical link causing the separation of the contacts, and so-called first signaling means able to trigger only on a short-circuit fault,
characterized in that the said first signaling means S comprise means for locking the aforesaid lever (6) in an intermediate position between the two positions of the lever respectively corresponding to an open position and to a closed position of the apparatus, at the occurrence of a magnetic fault, these means being controlled by the movable core (29) of the magnetic trigger (13). Dispositif de signalisation selon la revendication 1, caractérisé en ce que ces moyens comportent un levier dit premier (27), dit de renvoi, monté articulé autour d'un axe (35) fixe par rapport au boîtier (1) de l'appareil, ce levier de renvoi (27) comportant une première partie d'extrémité (27a) destinée à coopérer avec le noyau mobile (29) et une seconde partie d'extrémité (27b) destinée à coopérer avec l'embase (9) de la manette (6).Signaling device according to claim 1, characterized in that these means comprise a so-called first lever (27), said return, mounted articulated about an axis (35) fixed relative to the housing (1) of the apparatus, this return lever (27) having a first end portion (27a) intended to cooperate with the movable core (29) and a second end portion (27b) for cooperating with the base (9) of the handle (6). Dispositif de signalisation selon la revendication 2, caractérisé en ce que le levier de renvoi précité (27) coopère avec le noyau mobile (29) par l'intermédiaire d'un levier dit second (28) monté articulé par rapport au boîtier (1) de l'appareil, ledit second levier (28) comportant une première partie d'extrémité (28a) montée à rotation autour d'un axe solidaire du noyau mobile (29) et une seconde partie d'extrémité (28b) comportant un élément d'accrochage (34) apte à coopérer avec un élément d'accrochage (33) de forme complémentaire appartenant à la première partie d'extrémité précitée (27a) du levier de renvoi (27), de telle manière que la position d'accrochage des deux leviers (27,28) l'un par rapport à l'autre corresponde à une position fermée des contacts (4,5) lors d'un fonctionnement normal de l'appareil, et que lors de l'apparition d'un défaut d'origine magnétique, le déplacement du noyau mobile (29) entraîne le désengagement des deux éléments d'accrochage (33,34) l'un par rapport à l'autre, ce désengagement permettant le rappel du levier de renvoi (27) dans une position de blocage de la manette (6) dans la position intermédiaire précitée.Signaling device according to claim 2, characterized in that the aforesaid return lever (27) cooperates with the movable core (29) via a second said lever (28) articulated relative to the housing (1) of the apparatus, said second lever (28) having a first end portion (28a) rotatably mounted about an axis integral with the movable core (29) and a second end portion (28b) having an element hooking (34) adapted to cooperate with a fastening element (33) of complementary shape belonging to the aforementioned first end portion (27a) of the return lever (27), so that the hooking position of the two levers (27,28) relative to one another correspond to a closed position of the contacts (4,5) during normal operation of the apparatus, and that when a defect occurs of magnetic origin, the displacement of the movable core (29) causes the disengagement of the two el hooking elements (33,34) relative to each other, this disengagement allowing the return of the idle lever (27) in a locking position the lever (6) in the aforesaid intermediate position. Dispositif de signalisation selon la revendication 2 ou 3, caractérisé en ce que le levier de renvoi précité (27) comporte une partie d'extrémité dite troisième (27c) apte à coopérer avec un indicateur (39) de manière à signaler la présence ou non d'un défaut d'origine magnétique.Signaling device according to claim 2 or 3, characterized in that the aforesaid return lever (27) comprises a so-called third end portion (27c) adapted to cooperate with an indicator (39) so as to indicate the presence or absence of a defect of magnetic origin. Dispositif de signalisation selon la revendication 4, caractérisé en ce que cet indicateur (39) comporte un moyen de réinitialisation (39e) apte à être manoeuvré par un utilisateur de manière à rappeler le levier de renvoi (27) dans une position d'accrochage avec le levier dit second (28), après le blocage de la manette dans une position intermédiaire, ceci afin de libérer la manette (6) et permettre la poursuite de son déplacement vers la position ouverte.Signaling device according to claim 4, characterized in that this indicator (39) comprises a reset means (39e) adapted to be operated by a user so as to recall the return lever (27) in a hooking position with the said second lever (28), after locking the lever in an intermediate position, this in order to release the handle (6) and allow the further movement to the open position. Dispositif de signalisation selon la revendication 4 ou 5, caractérisé en ce que cet indicateur (39) est monté rotatif par rapport au boitier (1) de l'appareil, ledit indicateur coopérant avec la partie d'extrémité dite troisième précitée (27c) du levier de renvoi (27) et comportant une surface visible (39f) pour un utilisateur à travers une ouverture (7) du boîtier (1) de l'appareil, cette surface visible (39f) comportant un moyen pour indiquer la présence ou l'absence d'un défaut d'origine magnétique en fonction de la position en rotation de cet indicateur (39).Signaling device according to claim 4 or 5, characterized in that this indicator (39) is rotatably mounted relative to the housing (1) of the device, said indicator cooperating with said third end portion (27c) of the return lever (27) and having a visible surface (39f) for a user through an opening (7) of the housing (1) of the apparatus, said visible surface (39f) having means for indicating the presence or the absence of a magnetic origin defect depending on the rotational position of this indicator (39). Dispositif de signalisation selon la revendication 6, caractérisé en ce que cet indicateur (39) comporte au moins une portion de surface colorée sur sa surface visible (39f), l'apparition de cette couleur à travers l'ouverture (7) du boîtier (1) indiquant la survenue d'un défaut d'origine magnétique.Signaling device according to Claim 6, characterized in that this indicator (39) has at least one colored surface portion on its visible surface (39f), the appearance of this color through the opening (7) of the housing ( 1) indicating the occurrence of a magnetic defect. Dispositif de signalisation selon l'une quelconque des revendication 4 à 7, caractérisé en ce que cette troisième partie d'extrémité (27c) comporte une tige (37) comportant un axe (37a), cet axe étant apte à coopérer avec une rainure (39a) prévue dans l'indicateur précité (39), de telle manière que l'entraînement en rotation du levier de renvoi (27) dans un sens entraîne une rotation dans un sens opposé de l'indicateur (39).Signaling device according to any one of claims 4 to 7, characterized in that this third end portion (27c) comprises a rod (37) having an axis (37a), this axis being adapted to cooperate with a groove ( 39a) provided in the aforesaid indicator (39), such that rotation of the return lever (27) in one direction causes rotation in a direction opposite to the indicator (39). Dispositif de signalisation selon la revendication 5, caractérisé en ce que ce moyen de réinitialisation comporte un élément formant doigt (39e) en saillie sur la surface (39f) précitée de l'indicateur (39).Signaling device according to claim 5, characterized in that said reset means comprises a finger member (39e) projecting from the aforesaid surface (39f) of the indicator (39). Appareil de protection électrique comportant un dispositif de signalisation selon l'une quelconque des revendications 1 à 9.Electrical protection apparatus comprising a signaling device according to any one of claims 1 to 9. Appareil de protection électrique selon la revendication 10, caractérisé en ce qu'il comporte en outre un moyen de signalisation dit second T, apte à signaler l'état déclenché de l'appareil quelque soit le type de défaut, l'activation des deux moyens de signalisation S,T signalant un défaut du type magnétique, tandis que l'activation d'un seul moyen de signalisation signalant un défaut de surcharge.Electrical protection device according to claim 10, characterized in that it further comprises a second said signaling means T, able to signal the triggered state of the device whatever the type of fault, the activation of the two signaling means S, T signaling a magnetic type fault, while the activation of a single signaling means signaling an overload fault. Appareil de protection électrique selon la revendication 10 ou 11, caractérisé en ce que c'est un disjoncteur.Electrical protection device according to claim 10 or 11, characterized in that it is a circuit breaker.
EP17160475.4A 2016-05-23 2017-03-13 Mechanism for signalling an electrical fault in an electric protection device, and electric protection device including such a mechanism Active EP3249673B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1654569A FR3051593B1 (en) 2016-05-23 2016-05-23 DEVICE FOR SIGNALING AN ELECTRICAL FAULT IN AN ELECTRICAL PROTECTION APPARATUS, AND ELECTRICAL PROTECTION APPARATUS COMPRISING SUCH A DEVICE

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EP3249673A1 true EP3249673A1 (en) 2017-11-29
EP3249673B1 EP3249673B1 (en) 2020-09-16

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CN (1) CN107452525B (en)
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FR3087273B1 (en) * 2018-10-15 2020-11-06 Schneider Electric Ind Sas MEASURING DEVICE AND ELECTRICAL SWITCHING DEVICE

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FR3051593B1 (en) 2019-10-04
ES2823284T3 (en) 2021-05-06
EP3249673B1 (en) 2020-09-16
FR3051593A1 (en) 2017-11-24
CN107452525A (en) 2017-12-08
CN107452525B (en) 2020-09-11

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