EP0685867B1 - Differential release device - Google Patents

Differential release device Download PDF

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Publication number
EP0685867B1
EP0685867B1 EP19950401233 EP95401233A EP0685867B1 EP 0685867 B1 EP0685867 B1 EP 0685867B1 EP 19950401233 EP19950401233 EP 19950401233 EP 95401233 A EP95401233 A EP 95401233A EP 0685867 B1 EP0685867 B1 EP 0685867B1
Authority
EP
European Patent Office
Prior art keywords
tripping device
lever
differential
tripping
cover
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.)
Expired - Lifetime
Application number
EP19950401233
Other languages
German (de)
French (fr)
Other versions
EP0685867A1 (en
Inventor
Frédéric Comte
Christophe Jallon
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.)
Legrand SA
Legrand SNC
Original Assignee
Legrand SA
Legrand SNC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Legrand SA, Legrand SNC filed Critical Legrand SA
Publication of EP0685867A1 publication Critical patent/EP0685867A1/en
Application granted granted Critical
Publication of EP0685867B1 publication Critical patent/EP0685867B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly

Definitions

  • the present invention relates generally differential release devices associated with a main trip device such as a switch or circuit breaker for tripping thereof in the event that either of the conductors supplying a electrical appliance becomes the object of a fault insulation. See for example EP-A-0 461 027.
  • a fault detector capable of delivering a current differential in response to a fault, in practice a wound toroid consequently, a sensitive relay served by the detector fault, and a trigger mechanism which, under the control of the sensitive relay, is able to intervene on the main triggering device, and more specifically, on the triggering device that usually presents this one.
  • the assembly constitutes a switch or circuit breaker differential.
  • the present invention generally has for subject of the provisions likely to facilitate the assembly of the differential trip device, for the benefit of costs.
  • a differential release device which, according to a first of these provisions, is characterized in that the sensitive relay and trigger mechanism are worn by the cover, while the fault detector is carried by the main trigger device housing.
  • the resistance that this circuit usually comprises test is also carried by the device housing main trigger.
  • all the components of the differential release according to the invention are preferably carried by the cover thereof.
  • the trigger mechanism comprising, in the form of parts separate, multiple springs, each of these springs preferably belongs to a subset by through which it is attached to the hood.
  • the device for differential trigger 10 is associated to a main trip device 11, such as a switch or circuit breaker.
  • the assembly constitutes a switch or a circuit breaker differential.
  • the main tripping device 11 is a circuit breaker monopolar, phase and neutral.
  • This main triggering device 11 does not fall under not by itself of the present invention it will not described in full detail here.
  • a housing 12 which is of modular type in the form of embodiment shown, and which presents, laterally, on each side, a 13P phase connection terminal and a connection terminal 13N neutral, and, on the other hand, a joystick maneuver 14, which, in the embodiment shown, is rotatably mounted between a trigger position, shown in broken lines in Figure 9, and a locking position, shown in solid lines on Figures 2 and 13 and broken lines in Figure 12.
  • the operating lever 14 of the main trigger 11 door parallel to its axis of rotation, a lug 15, which protrudes out of the housing 12 to the favor of a buttonhole 16 thereof curved in an arc of circle.
  • the device for differential trigger 10 comprises, overall, under a cover 20 by which it is attached to the housing 12 of the main trigger device 11, a fault detector 21, which is capable of delivering a current differential in response to a fault, a sensitive relay 22, which is served by the fault detector 21, and a mechanism for trigger 24, which, under the control of sensitive relay 22, is able to intervene on the triggering device main 11.
  • the cover 20 has the same outline as the case 12, and, like this, it comes in modular form.
  • the cover 20 forms, at least locally, by its side wall 26, a canopy 27 by which it covers the corresponding portion of the edge of the housing 12 of the main triggering device 11.
  • this awning 27 extends only over the part front of the housing 12, and it has, in its portion middle, a notch 28, for its engagement on the joystick operation 14.
  • the cover 20 has, in addition, on its side wall 26, from one side to the less of this, a clearance 29, level with the terminals 13P, 13N connection of the main trip device 11.
  • these means of nesting consist by bosses 35 projecting laterally, from place to place, on a rim 36 of the housing 12 which is capped at its base the side wall 26 of the cover 20 when the latter is attached to the housing 12.
  • the fault detector 21 is consisting of a torus on which are wound, a part, a primary, formed of one or more windings 37P of phase and one or more neutral windings 37N, and, on the other hand, a secondary whose windings 38 are visible in Figure 13.
  • the ends of the primary windings 37P, 37N are connected, for example by welding, to the conductors electric 18P, 18N corresponding, on the section of these parallel to the main wall 25 of the cover 20.
  • the ends of the secondary windings 38 are connected to the terminals of sensitive relay 22, as well that it is represented in figure 13.
  • the torus constituting the fault detector 21 can be duly calibrated on the housing 12, for example by snap-fastening.
  • this resistor 41 is carried by the housing 12 of the main trigger device 11.
  • the legs 42 of this resistance 41 are simply forcibly engaged in forked studs 43 provided for this purpose projecting from the housing 12.
  • One of these legs 42 is connected to the conductor 18P electric phase located downstream in the circuit corresponding.
  • the other is free.
  • all components of the release device differential 10 according to the invention are carried by the cover 20.
  • the relay sensitive 22 is located substantially at the height of the operating handle 14, under the front portion of the wall side 26 of cover 20 extending by a canopy 27.
  • a metal shield 46 is inserted between it and this main wall 25.
  • the mechanism trigger 24 extends between cover 20 and a plate 48 integral with it, and, more precisely, between the wall main 25 of this cover 20 and a plate 48 parallel to this main wall 25.
  • this turntable 48 is attached to posts 50 projecting therefrom effect on the main wall 25 of the cover 20.
  • the mechanism trigger 24 generally comprises a lever trigger 51, which, rotatably mounted on an axis 52 integral of the cover 20, has an arm 53 on which the relay can act sensitive 22, its free end being arranged directly above the striker 47 thereof, a return spring 54, which permanently requests this trigger lever 51 in direction of the sensitive relay 22, an actuating lever 55, which, rotatably mounted on an axis 56 integral with the cover 20, and distinct from the previous one, has an arm 58 by which it can act on the main triggering device 11, disengageable hooking means 59, by which the lever trigger 51 is able to hold in position as shown in figure 12, the lever actuator 55, and an opening spring 60, which biases permanently this actuating lever 55 towards a release position, figure 9, angularly separated from its previous engagement position.
  • the axes 52 and 56 are parallel to each other, and parallel to the axis of rotation of the operating handle 14.
  • the disengageable attachment means 59 comprise, on the trigger lever 51, at the end of an arm 61 thereof, a hook 62, and, in correspondence, on the lever actuator 55, at the end of an arm 63 thereof, a hook 64, oriented in the opposite direction to the previous hook 62.
  • the hook 62 of the release lever 51 is turned to the side opposite the operating lever 14, and the hook 64 of the lever 55 is turned towards this joystick operation 14.
  • the spring return 54 of the release lever 51 is a spring of torsion, which, by its middle part of torsion 65, is engaged on a hub 66 of this trigger lever 51 having at a lug 67 protrudes for its retention, so that, during assembly, and as shown in figure 8, it belongs, with this trip lever 51, to the same sub-assembly 68.
  • the middle torsion part 65 of the spring 54 is taken between the arm 53 of the lever trigger 51 and the lug 67 of the hub 66 thereof.
  • One of the branches 69 of the return spring 54 is in support on a lug 70 provided for this purpose projecting from the wall main 25 of cover 20, while its other branch 72 bears on a shoulder 73 of the trigger lever 51, in being in practice engaged behind a lug 74 provided for projecting on this shoulder 73.
  • the arm 53 trigger lever 51 on which this relay can act sensitive 22 is subjected to a damping spring 75 which is itself subject to the actuating lever 55.
  • this damping spring 75 is a torsion spring which, by its central torsion part 76, is engaged on a hub 77 of the trigger lever 51 directed axially in the opposite direction to the previous hub 66, FIG. 3, and, in addition to the arm 53 on which the sensitive relay 22 can act and on which one of the branches 78 of the spring bears damping 75, the trigger lever 51 includes a other arm 79, which buttresses the other of the branches 80 of this damping spring 75.
  • the hub 77 of the lever trigger 51 has a protruding lug 81, visible on Figures 9, 11 and 12, for spring retention damping 75, so that, when mounted, this spring damping 75 belongs, with the trigger lever 51, to the same sub-assembly as this trigger lever 51, in this case the subset 68.
  • the branch 80 of the damping spring 75 extends beyond the arm 79 of the trip lever 51.
  • the spring opening 60 is a torsion spring, which by its part torsional center 82, is engaged on a hub 83 of the lever actuator 55 projecting from a lug 84 for its retained, so that, during assembly, and as shown in Figures 4 and 5, it belongs, with this lever actuator 55, to the same sub-assembly 85.
  • the branch 86 of the opening spring 60 is in support against a stud 87, which, integral with the cover 20, comes in practical in one piece from the main wall 25 of this one.
  • this pad 87 is elongated, and, according to the invention, it has a chamfer 88 at its free end, FIG. 7, for placing under automatic constraint of the opening spring 60 during assembly.
  • the other of the branches 89 of the opening spring 60 is resting against an axial shoulder 90 of the actuating lever 55, and, on the opposite side thereof, it runs, at least locally, another axial shoulder 91 of this lever actuation 55.
  • the axial shoulder 90 is formed by a lug 92 projecting from the arm 63, and the axial shoulder 91 belongs to a wall 93, which is also protruding on this arm 63, and on the edge of which carries the branch 86 of the opening spring 60 before mounting the sub-assembly 85 on the cover 20.
  • a test circuit 40 being provided, as indicated previously, the branch 89 of the opening spring 60 comprises an extension 94, which, by two bends in opposite directions, is offset from its current part.
  • the actuating lever 55 For its action on the triggering device main 11, the actuating lever 55 carries, at the end of its arm 58, a finger 95, which, elongated axially, is engaged in the housing 12, in favor of the buttonhole 19 thereof.
  • the arm 58 On the side opposite this finger 95, the arm 58 carries a lug 126 on the path of which the branch 80 of the damping spring 75.
  • the actuating lever 55 has a third arm 96, and it carries, at the end of it, a pallet 97, forming a sight glass, which, in the position of trigger, is plumb with a window 98 of the cover 20, and, more precisely, from the front portion of the side wall 26 of it.
  • the actuating lever 55 is in practice made of synthetic material colored, for example in red synthetic material.
  • the window 98 of the cover 20 is closed by a porthole 99.
  • a reset lever 100 which, under the biasing of elastic polarization means 105, is able to be carried by a lug 103 on a fixed track 104, at least for the trigger configuration, and which, via a nose 101, is then interposed on the path of a lug 15 integral with the operating lever 14 of the triggering device main 11.
  • the actuating lever 55 has, projecting from a fourth arm 106, a pin 107, which extends axially projecting from the same side as finger 95.
  • the means polarization elastic 105 of this reset lever 100 are all in one piece with this one.
  • the fixed track 104 on which the lug 103 bears of the reset lever 100 is formed by the edge of the platinum 48.
  • this test circuit 40 includes a connection tab 109 which, integral with the cover 20, carries freely on a connection terminal 110 secured to the housing 12, figure 10.
  • the self-cutting tab 108 and the connection tab 109 both belong to a metallic strip 111, of which they form in one piece lateral extensions, and which is attached to the cover 20, and, more specifically, on posts 112 provided for this protruding effect on the main wall 25 of this cover 20.
  • the terminal connection 110 is formed by the electrical conductor 18N of neutral located upstream in the corresponding circuit, and, more precisely, by the end of the 37N winding secured to the section of this parallel neutral 18N electrical conductor to the main wall 25 of the cover 20.
  • connection tab 109 is bent.
  • test circuit 40 is under the control of a test button 113 available to the user.
  • this test button 113 acts on the front portion of the side wall 26 of the cover 20, at the favor of a notch 114 thereof.
  • a metal strip 115 comprising two branches, namely, a long branch 116, intended to come cooperate with the tab 42 free from the resistor 41, and a branch 117, short, intended to cooperate with branch 86 of opening spring 60.
  • test button 113 is also subjected to elastic polarization means 118, which urge it in permanently in a stop direction for which the branches 116, 117 of the metal strip 115 are in the air.
  • the trigger mechanism 24 comprising, in the form of separate parts, several springs, in this case the return spring 54 of the trigger 51, opening spring 60, and spring damping 75, each of these springs 54, 60, 75 belongs to a subset, 68 or 85, through from which it is advantageously likely to be reported on the cover 20.
  • the sub-assembly 68 is put in place before the sub-assembly 85, or after it.
  • the subset 85 carries preferably from the start the reset lever 100, and, during its installation, by engagement on axis 56 corresponding cover 20, branch 86 of the opening spring 60 comes to bear on the chamfer 88 of the stud 87 of the cover 20, in so that, then following the slope of this chamfer 88, such that shown schematically by an arrow F1 in FIG. 7, it puts progressively stressing the opening spring 60, until its final engagement on plot 87.
  • the stressing of the opening spring 60 is advantageously done easily and systematically.
  • the actuation lever 55 comes to carry by its arm 96 on a stud 120 which, integral with the cover 20, in coming in practice in one piece from the main wall 25 of it, sets its trigger position, such that shown in figure 9.
  • this stud 120 can also be chamfered.
  • connection terminal 110 The connecting tab 109 of the metal strip 111 then comes to carry itself on the connection terminal 110 corresponding.
  • the operating lever 14 comes wear on the nose 101 of the reset lever 100, such as shown in Figure 11, and, via this lever reset 100, it rotates the lever 55 around axis 56, along arrow F3 of Figure 11, however that, by its lug 103, the lever reset 100 follows the fixed track 104.
  • the opening spring 60 is located jointly gradually under duress, however that by its extension 94, its branch 89 comes to bear elastically on the self-cutting tab 108.
  • the actuation lever 55 is then the subject of a slight retrograde rotational movement at the end of which it found retained in the latching position by the trigger 51, by hooking its hook 64 on the hook 62 thereof, while the branch 89 of the spring 60 remains in contact with the self-cutting tab 108.
  • this lock which involves closing the contacts of the device main trigger 11, only intervenes after arming of the trigger mechanism 24, which, therefore, can act immediately in the event of a fault.
  • the striker 47 of the sensitive relay 22 acts on the arm 53 of the trigger 51, and, by rotation about its axis 52, according to arrow F4 in FIG. 12, this causes the rupture of the disengageable attachment means 59, which frees the actuating lever 55.
  • the damping spring 75 advantageously saves on the release lever 51 the shock due to the action of the actuating lever 55.
  • the rearming of the sensitive relay 22 is made by the actuating lever 55, and not by the joystick 14.
  • this sensitive relay 22 is never open, which is advantageously favorable to the maintenance of its magnetization.
  • the operating lever 14 can be tilted from its latching position to its trigger, without triggering this trigger mechanism 24.
  • the joystick maneuver 14 simply elastically clears the lever reset 100, which then returns to its original position under the use of its elastic polarization means 105, without resulting in any solicitation on the actuating lever 55, and therefore on the hooking means disengageable 59 by which it is retained in position of engagement by the trigger lever 51.
  • the triggering device differential 10 according to the invention then advantageously remains armed.
  • the coverslip metallic 115 closes the test circuit 40.
  • this imbalance causes, following the previous process, the opening of the trigger 24.
  • the tongue constituting the elastic means polarization 105 ′ of the reset lever 100 is straight, and it extends between two fixed stops 125, 126, one before, the other rear, from the cover 20.
  • this tab bears on the front stop 125, in so that, as before, the reset lever 100 carries itself, by its lug 103, on the fixed track 104.
  • the reset lever 100 is therefore tilted, its lug 103 no longer relates to the fixed track 104, and its nose 101 is sufficiently erased, i.e. sufficiently discarded of the operating lever 14, so that it is no longer in able to interfere with the lug 15 thereof during its tilting.
  • the opening and closing of the main trigger 11 by the joystick 14 can advantageously be done without noise or sensation particular for the operator, while in the form of previous embodiment, the elastic erasure of the rearmament 100 being on the contrary likely to generate a such noise and such a special feeling.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

La présente invention concerne d'une manière générale les dispositifs de déclenchement différentiel associés à un dispositif de déclenchement principal tel qu'interrupteur ou disjoncteur pour le déclenchement de celui-ci dans le cas où l'un ou l'autre des conducteurs assurant l'alimentation d'un appareil électrique vient à être l'objet d'un défaut d'isolation. Voir par exemple EP-A-0 461 027.The present invention relates generally differential release devices associated with a main trip device such as a switch or circuit breaker for tripping thereof in the event that either of the conductors supplying a electrical appliance becomes the object of a fault insulation. See for example EP-A-0 461 027.

Ils comportent, globalement, sous un capot par lequel ils sont accolés au boítier du dispositif de déclenchement principal, un détecteur de défaut apte à délivrer un courant différentiel en réponse à un défaut, en pratique un tore bobiné en conséquence, un relais sensible desservi par le détecteur de défaut, et un mécanisme de déclenchement qui, sous le contrôle du relais sensible, est apte à intervenir sur le dispositif de déclenchement principal, et, plus précisément, sur l'organe de déclenchement que présente usuellement celui-ci.They comprise, overall, under a cover by which they are attached to the housing of the release device main, a fault detector capable of delivering a current differential in response to a fault, in practice a wound toroid consequently, a sensitive relay served by the detector fault, and a trigger mechanism which, under the control of the sensitive relay, is able to intervene on the main triggering device, and more specifically, on the triggering device that usually presents this one.

L'ensemble constitue un interrupteur ou disjoncteur différentiel.The assembly constitutes a switch or circuit breaker differential.

La présente invention a d'une manière générale pour objet des dispositions de nature à faciliter le montage du dispositif de déclenchement différentiel, au bénéfice des coûts.The present invention generally has for subject of the provisions likely to facilitate the assembly of the differential trip device, for the benefit of costs.

De manière plus précise, elle a pour objet un dispositif de déclenchement différentiel qui, suivant une première de ces dispositions, est caractérisé en ce que le relais sensible et le mécanisme de déclenchement sont portés par le capot, tandis que le détecteur de défaut est porté par le boítier du dispositif de déclenchement principal.More specifically, it relates to a differential release device which, according to a first of these provisions, is characterized in that the sensitive relay and trigger mechanism are worn by the cover, while the fault detector is carried by the main trigger device housing.

Préférentiellement, lorsqu'un circuit de test est prévu, la résistance que comporte usuellement ce circuit de test est elle aussi portée par le boítier du dispositif de déclenchement principal.Preferably, when a test circuit is expected, the resistance that this circuit usually comprises test is also carried by the device housing main trigger.

Plus précisément, à l'exclusion du détecteur de défaut et de cette résistance, tous les constituants du dispositif de déclenchement différentiel suivant l'invention sont préférentiellement portés par le capot de celui-ci. More specifically, excluding the fault detector and from this resistance, all the components of the differential release according to the invention are preferably carried by the cover thereof.

Au montage, il est ainsi avantageusement possible d'intervenir en parallèle sur le boítier du dispositif de déclenchement principal et sur le capot du dispositif de déclenchement différentiel, ce qui permet de gagner du temps.During assembly, it is thus advantageously possible to operate in parallel on the housing of the main trigger and on the cover of the differential trigger, which saves time.

Suivant une autre disposition de l'invention, le mécanisme de déclenchement comportant, sous la forme de pièces distinctes, plusieurs ressorts, chacun de ces ressorts appartient préférentiellement à un sous-ensemble par l'intermédiaire duquel il est rapporté sur le capot.According to another provision of the invention, the trigger mechanism comprising, in the form of parts separate, multiple springs, each of these springs preferably belongs to a subset by through which it is attached to the hood.

La mise en place de ces ressorts s'en trouve avantageusement simplifiée.The installation of these springs is found advantageously simplified.

Ces dispositions de l'invention, ainsi que d'autres, et leurs avantages, ressortiront de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est une vue en perspective de l'ensemble que constitue le dispositif de déclenchement différentiel suivant l'invention avec le dispositif de déclenchement principal auquel il est associé ;
  • la figure 2 est, avec un arrachement local, une vue en perspective de cet ensemble, représenté ouvert ;
  • la figure 3 est une vue en perspective éclatée du dispositif de déclenchement différentiel suivant l'invention ;
  • la figure 4 est, à échelle supérieure, une vue en perspective du levier d'actionnement que comporte le mécanisme de déclenchement de ce dispositif de déclenchement différentiel et du ressort d'ouverture associé à ce levier d'actionnement ;
  • la figure 5 est une vue latérale du sous-ensemble correspondant, suivant la flèche V de la figure 4 ;
  • la figure 6 en est une vue en élévation, représenté en place sur le capot ;
  • la figure 7 est, à échelle supérieure, une vue de détail en coupe transversale, suivant la ligne VII-VII de la figure 6 ;
  • la figure 8 est une vue en perspective du levier de déclenchement que comporte le mécanisme de déclenchement du dispositif de déclenchement différentiel suivant l'invention et des ressorts de rappel et d'amortissement formant un autre sous-ensemble avec ce levier de déclenchement ;
  • la figure 9 est, suivant la flèche IX de la figure 2, une vue partielle en élévation du dispositif de déclenchement différentiel suivant l'invention, pour la configuration de déclenchement de celui-ci ;
  • la figure 10 est, à échelle supérieure, une vue de détail en coupe transversale, suivant la ligne brisée X-X de la figure 9 ;
  • la figure 11 est une vue partielle en élévation analogue à celle de la figure 9, pour une configuration intermédiaire entre la configuration de déclenchement et la configuration d'enclenchement ;
  • la figure 12 est une vue partielle en élévation analogue à celle des figures 9 et 11, pour la configuration d'enclenchement ;
  • la figure 13 est, en complément de la figure 9, et suivant la flèche XIII de la figure 2, une autre vue partielle en élévation du dispositif de déclenchement différentiel suivant l'invention ;
  • la figure 14 est, suivant l'orientation de la figure 3, une vue en perspective du levier de réarmement que comporte le mécanisme de déclenchement du dispositif de déclenchement différentiel suivant l'invention, pour une variante de réalisation ;
  • les figures 15 et 16 sont des vues partielles en élévation analogues à celles des figures 9 et 12 pour cette variante de réalisation.
    • These provisions of the invention, as well as others, and their advantages, will emerge from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • Figure 1 is a perspective view of the assembly that constitutes the differential trigger device according to the invention with the main trigger device with which it is associated;
  • Figure 2 is, with a local cutaway, a perspective view of this assembly, shown open;
  • Figure 3 is an exploded perspective view of the differential release device according to the invention;
  • Figure 4 is, on a larger scale, a perspective view of the actuation lever that comprises the trigger mechanism of this differential trigger device and the opening spring associated with this actuation lever;
  • Figure 5 is a side view of the corresponding sub-assembly, along arrow V of Figure 4;
  • Figure 6 is an elevational view, shown in place on the cover;
  • Figure 7 is, on a larger scale, a detail view in cross section along the line VII-VII of Figure 6;
  • Figure 8 is a perspective view of the trigger lever that includes the trigger mechanism of the differential trigger device according to the invention and the return and damping springs forming another sub-assembly with this trigger lever;
  • Figure 9 is, along arrow IX of Figure 2, a partial elevational view of the differential trigger device according to the invention, for the trigger configuration thereof;
  • Figure 10 is, on a larger scale, a detail view in cross section, along the broken line XX of Figure 9;
  • FIG. 11 is a partial view in elevation similar to that of FIG. 9, for an intermediate configuration between the tripping configuration and the latching configuration;
  • Figure 12 is a partial elevational view similar to that of Figures 9 and 11, for the latching configuration;
  • Figure 13 is, in addition to Figure 9, and according to arrow XIII of Figure 2, another partial elevational view of the differential release device according to the invention;
  • Figure 14 is, according to the orientation of Figure 3, a perspective view of the reset lever that includes the trigger mechanism of the differential trigger device according to the invention, for an alternative embodiment;
  • Figures 15 and 16 are partial elevational views similar to those of Figures 9 and 12 for this alternative embodiment.

    • Tel qu'illustré sur ces figures, le dispositif de déclenchement différentiel 10 suivant l'invention est associé à un dispositif de déclenchement principal 11, tel qu'un interrupteur ou un disjoncteur.As illustrated in these figures, the device for differential trigger 10 according to the invention is associated to a main trip device 11, such as a switch or circuit breaker.

    L'ensemble constitue un interrupteur ou un disjoncteur différentiel.The assembly constitutes a switch or a circuit breaker differential.

    En pratique, dans la forme de réalisation représentée, le dispositif de déclenchement principal 11 est un disjoncteur monopolaire, à phase et neutre. In practice, in the embodiment shown, the main tripping device 11 is a circuit breaker monopolar, phase and neutral.

    Ce dispositif de déclenchement principal 11 ne relevant pas par lui-même de la présente invention, il ne sera pas décrit dans tous ses détails ici.This main triggering device 11 does not fall under not by itself of the present invention it will not described in full detail here.

    Il suffira d'indiquer qu'il comporte, d'une part, un boítier 12, qui est de type modulaire dans la forme de réalisation représentée, et qui présente, latéralement, sur chacun de ses côtés, une borne de connexion 13P de phase et une borne de connexion 13N de neutre, et, d'autre part, une manette de manoeuvre 14, qui, dans la forme de réalisation représentée, est montée rotative entre une position de déclenchement, représentée en traits interrompus sur la figure 9, et une position d'enclenchement, représentée en traits continus sur les figures 2 et 13 et en traits interrompus sur la figure 12.It will suffice to indicate that it comprises, on the one hand, a housing 12, which is of modular type in the form of embodiment shown, and which presents, laterally, on each side, a 13P phase connection terminal and a connection terminal 13N neutral, and, on the other hand, a joystick maneuver 14, which, in the embodiment shown, is rotatably mounted between a trigger position, shown in broken lines in Figure 9, and a locking position, shown in solid lines on Figures 2 and 13 and broken lines in Figure 12.

    Pour le réarmement, suivant des dispositions décrites plus en détail ultérieurement, du dispositif de déclenchement différentiel 10, la manette de manoeuvre 14 du dispositif de déclenchement principal 11 porte, parallèlement à son axe de rotation, un ergot 15, qui fait saillie hors du boítier 12 à la faveur d'une boutonnière 16 de celui-ci cintrée en arc de cercle.For rearming, according to the provisions described in more detail later, of the triggering device differential 10, the operating lever 14 of the main trigger 11 door, parallel to its axis of rotation, a lug 15, which protrudes out of the housing 12 to the favor of a buttonhole 16 thereof curved in an arc of circle.

    Pour des raisons qui apparaítront également ci-après, font aussi saillie du boítier 12, deux conducteurs électriques 18P de phase et deux conducteurs électriques 18N de neutre, qui, dans la forme de réalisation représentée, sont tous coudés à angle droit.For reasons which will also appear below, also protrude from the housing 12, two electrical conductors 18P phase and two 18N neutral electrical conductors, which, in the embodiment shown, are all bent at right angles.

    Il s'agit, en pratique, de conducteurs électriques relativement rigides.In practice, these are electrical conductors relatively rigid.

    Enfin, sous la manette de manoeuvre 14, le boítier 12 du dispositif de déclenchement principal 11 présente, au-delà de la boutonnière 16, une autre boutonnière 19, également cintrée en arc de cercle.Finally, under the operating lever 14, the housing 12 of the main trip device 11 present, beyond buttonhole 16, another buttonhole 19, also curved in an arc.

    De manière connue en soi, le dispositif de déclenchement différentiel 10 suivant l'invention comporte, globalement, sous un capot 20 par lequel il est accolé au boítier 12 du dispositif de déclenchement principal 11, un détecteur de défaut 21, qui est apte à délivrer un courant différentiel en réponse à un défaut, un relais sensible 22, qui est desservi par le détecteur de défaut 21, et un mécanisme de déclenchement 24, qui, sous le contrôle du relais sensible 22, est apte à intervenir sur le dispositif de déclenchement principal 11.In a manner known per se, the device for differential trigger 10 according to the invention comprises, overall, under a cover 20 by which it is attached to the housing 12 of the main trigger device 11, a fault detector 21, which is capable of delivering a current differential in response to a fault, a sensitive relay 22, which is served by the fault detector 21, and a mechanism for trigger 24, which, under the control of sensitive relay 22, is able to intervene on the triggering device main 11.

    Le capot 20 a le même contour que le boítier 12, et, comme celui-ci, il se présente sous forme modulaire.The cover 20 has the same outline as the case 12, and, like this, it comes in modular form.

    Il comporte, globalement, une paroi principale 25, et, perpendiculairement à celle-ci, suivant son contour, une paroi latérale 26.It comprises, overall, a main wall 25, and, perpendicular to it, along its contour, a wall lateral 26.

    Dans la forme de réalisation représentée, le capot 20 forme, au moins localement, par sa paroi latérale 26, un auvent 27 par lequel il recouvre la portion correspondante de la tranche du boítier 12 du dispositif de déclenchement principal 11.In the embodiment shown, the cover 20 forms, at least locally, by its side wall 26, a canopy 27 by which it covers the corresponding portion of the edge of the housing 12 of the main triggering device 11.

    En pratique, cet auvent 27 ne s'étend que sur la partie de façade du boítier 12, et il présente, dans sa portion médiane, une échancrure 28, pour son engagement sur la manette de manoeuvre 14.In practice, this awning 27 extends only over the part front of the housing 12, and it has, in its portion middle, a notch 28, for its engagement on the joystick operation 14.

    Dans la forme de réalisation représentée, le capot 20 présente, en outre, sur sa paroi latérale 26, d'un côté au moins de celle-ci, un dégagement 29, à niveau avec les bornes de connexion 13P, 13N du dispositif de déclenchement principal 11.In the embodiment shown, the cover 20 has, in addition, on its side wall 26, from one side to the less of this, a clearance 29, level with the terminals 13P, 13N connection of the main trip device 11.

    En pratique, ce dégagement 29 n'existe que d'un seul côté de la paroi latérale 26.In practice, this clearance 29 only exists for one side of the side wall 26.

    Pour l'assemblage du capot 20 au boítier 12, il est prévu, d'une part, suivant l'axe de la manette de manoeuvre 14, des perçages 30 et 31, qui, affectant chacun respectivement le boítier 12 et le capot 20, sont propres à l'intervention d'un rivet 32, figure 1, et, d'autre part, en saillie sur le boítier 12, des piliers 33, qui, après engagement dans des ouvertures 34 prévues à cet effet dans la paroi principale 25 du capot 20, sont dûment sertis.For the assembly of the cover 20 to the housing 12, it is provided, on the one hand, along the axis of the operating lever 14, holes 30 and 31, which, each affecting respectively the case 12 and cover 20, are suitable for the intervention of a rivet 32, Figure 1, and, on the other hand, projecting from the housing 12, pillars 33, which, after engaging in openings 34 provided for this purpose in the main wall 25 of the cover 20, are duly set.

    Dans la forme de réalisation représentée, il intervient, en outre, au moins localement, entre le capot 20 et le boítier 12, des moyens d'emboítement, pour un préassemblage de l'ensemble avant sa solidarisation définitive. In the embodiment shown, it intervenes, moreover, at least locally, between the cover 20 and the housing 12, fitting means, for a pre-assembly of the assembly before its final connection.

    En pratique, ces moyens d'emboítement sont constitués par des bossages 35 faisant latéralement saillie, de place en place, sur un rebord 36 du boítier 12 que vient coiffer à sa base la paroi latérale 26 du capot 20 lorsque celui-ci est rapporté sur le boítier 12.In practice, these means of nesting consist by bosses 35 projecting laterally, from place to place, on a rim 36 of the housing 12 which is capped at its base the side wall 26 of the cover 20 when the latter is attached to the housing 12.

    De manière usuelle, le détecteur de défaut 21 est constitué par un tore sur lequel se trouvent bobinés, d'une part, un primaire, formé d'un ou plusieurs enroulements 37P de phase et d'un ou plusieurs enroulements 37N de neutre, et, d'autre part, un secondaire dont les enroulements 38 sont visibles sur la figure 13.Usually, the fault detector 21 is consisting of a torus on which are wound, a part, a primary, formed of one or more windings 37P of phase and one or more neutral windings 37N, and, on the other hand, a secondary whose windings 38 are visible in Figure 13.

    Les extrémités des enroulements 37P, 37N du primaire sont raccordées, par exemple par soudure, aux conducteurs électriques 18P, 18N correspondants, sur le tronçon de ceux-ci parallèle à la paroi principale 25 du capot 20.The ends of the primary windings 37P, 37N are connected, for example by welding, to the conductors electric 18P, 18N corresponding, on the section of these parallel to the main wall 25 of the cover 20.

    Les extrémités des enroulements 38 du secondaire sont raccordées, elles, aux bornes du relais sensible 22, ainsi qu'il est représenté sur la figure 13.The ends of the secondary windings 38 are connected to the terminals of sensitive relay 22, as well that it is represented in figure 13.

    Indépendamment de la fixation due au raccordement des enroulements 37P, 37N du primaire aux conducteurs électriques 18P, 18N, et en sus de cette fixation, le tore constituant le détecteur de défaut 21 peut être dûment calé sur le boítier 12, par exemple par encliquetage.Regardless of the fixing due to the connection of windings 37P, 37N from primary to electrical conductors 18P, 18N, and in addition to this fixation, the torus constituting the fault detector 21 can be duly calibrated on the housing 12, for example by snap-fastening.

    Dans la forme de réalisation représentée, il prévu, de manière usuelle, un circuit de test 40, et celui-ci met en oeuvre une résistance 41.In the embodiment shown, there are provided usual way, a test circuit 40, and this one puts works a resistance 41.

    Suivant l'invention, cette résistance 41 est portée par le boítier 12 du dispositif de déclenchement principal 11.According to the invention, this resistor 41 is carried by the housing 12 of the main trigger device 11.

    Par exemple, et tel que représenté, les pattes 42 de cette résistance 41 sont simplement engagées à force dans des plots fourchus 43 prévus à cet effet en saillie sur le boítier 12.For example, and as shown, the legs 42 of this resistance 41 are simply forcibly engaged in forked studs 43 provided for this purpose projecting from the housing 12.

    L'une de ces pattes 42 est reliée au conducteur électrique 18P de phase situé en aval dans le circuit correspondant.One of these legs 42 is connected to the conductor 18P electric phase located downstream in the circuit corresponding.

    L'autre est libre. The other is free.

    Préférentiellement, et tel que représenté, à l'exclusion du détecteur de défaut 21 et de la résistance 41, tous les constituants du dispositif de déclenchement différentiel 10 suivant l'invention sont portés par le capot 20.Preferably, and as shown, to excluding the fault detector 21 and the resistor 41, all components of the release device differential 10 according to the invention are carried by the cover 20.

    Il en est donc ainsi pour le relais sensible 22 et pour le mécanisme de déclenchement 24.This is therefore the case for the sensitive relay 22 and for the trigger mechanism 24.

    Dans la forme de réalisation représentée, le relais sensible 22 est implanté sensiblement à la hauteur de la manette de manoeuvre 14, sous la portion de façade de la paroi latérale 26 du capot 20 se prolongeant par un auvent 27.In the embodiment shown, the relay sensitive 22 is located substantially at the height of the operating handle 14, under the front portion of the wall side 26 of cover 20 extending by a canopy 27.

    Il présente, latéralement, des pattes 44, par lesquelles il est engagé à force sur des plots 45 prévus à cet effet en saillie sur la paroi principale 25 du capot 20.It has, laterally, legs 44, by which it is forcibly engaged on studs 45 provided for in this protruding effect on the main wall 25 of the cover 20.

    Préférentiellement, un blindage métallique 46 est inséré entre lui et cette paroi principale 25.Preferably, a metal shield 46 is inserted between it and this main wall 25.

    En pratique, le percuteur 47 de ce relais sensible 22 s'étend vers le bas, et, donc, du côté opposé à la manette de manoeuvre 14.In practice, the striker 47 of this sensitive relay 22 extends downward, and therefore on the side opposite the joystick operation 14.

    Dans la forme de réalisation représentée, le mécanisme de déclenchement 24 s'étend entre le capot 20 et une platine 48 solidaire de celui-ci, et, plus précisément, entre la paroi principale 25 de ce capot 20 et une platine 48 parallèle à cette paroi principale 25.In the embodiment shown, the mechanism trigger 24 extends between cover 20 and a plate 48 integral with it, and, more precisely, between the wall main 25 of this cover 20 and a plate 48 parallel to this main wall 25.

    Par exemple, et tel que représenté, cette platine 48 est rapportée sur des colonnettes 50 prévues en saillie à cet effet sur la paroi principale 25 du capot 20.For example, and as shown, this turntable 48 is attached to posts 50 projecting therefrom effect on the main wall 25 of the cover 20.

    Sur les figures 9, 11 et 12, et pour une meilleure clarté de celles-ci, la platine 48 a été plus ou moins complètement éliminée, seul subsistant pour l'essentiel son contour.In Figures 9, 11 and 12, and for better clarity of these, deck 48 was more or less completely eliminated, only the main one remaining contour.

    Dans la forme de réalisation représentée, le mécanisme de déclenchement 24 comporte, globalement, un levier de déclenchement 51, qui, monté rotatif sur un axe 52 solidaire du capot 20, comporte un bras 53 sur lequel peut agir le relais sensible 22, son extrémité libre étant disposée à l'aplomb du percuteur 47 de celui-ci, un ressort de rappel 54, qui sollicite en permanence ce levier de déclenchement 51 en direction du relais sensible 22, un levier d'actionnement 55, qui, monté rotatif sur un axe 56 solidaire du capot 20, et distinct du précédent, comporte un bras 58 par lequel il peut agir sur le dispositif de déclenchement principal 11, des moyens d'accrochage débrayables 59, par lesquels le levier de déclenchement 51 est apte à retenir en position d'enclenchement, tel que représenté à la figure 12, le levier d'actionnement 55, et un ressort d'ouverture 60, qui sollicite en permanence ce levier d'actionnement 55 en direction d'une position de déclenchement, figure 9, écartée angulairement de sa position d'enclenchement précédente.In the embodiment shown, the mechanism trigger 24 generally comprises a lever trigger 51, which, rotatably mounted on an axis 52 integral of the cover 20, has an arm 53 on which the relay can act sensitive 22, its free end being arranged directly above the striker 47 thereof, a return spring 54, which permanently requests this trigger lever 51 in direction of the sensitive relay 22, an actuating lever 55, which, rotatably mounted on an axis 56 integral with the cover 20, and distinct from the previous one, has an arm 58 by which it can act on the main triggering device 11, disengageable hooking means 59, by which the lever trigger 51 is able to hold in position as shown in figure 12, the lever actuator 55, and an opening spring 60, which biases permanently this actuating lever 55 towards a release position, figure 9, angularly separated from its previous engagement position.

    Les axes 52 et 56 sont parallèles entre eux, et parallèles à l'axe de rotation de la manette de manoeuvre 14.The axes 52 and 56 are parallel to each other, and parallel to the axis of rotation of the operating handle 14.

    Ils viennent en pratique d'un seul tenant de la paroi principale 25 du capot 20.They come in practice in one piece from the wall main 25 of cover 20.

    Les moyens d'accrochage débrayables 59 comportent, sur le levier de déclenchement 51, en bout d'un bras 61 de celui-ci, un crochet 62, et, en correspondance, sur le levier d'actionnement 55, en bout d'un bras 63 de celui-ci, un crochet 64, orienté en sens inverse du crochet 62 précédent.The disengageable attachment means 59 comprise, on the trigger lever 51, at the end of an arm 61 thereof, a hook 62, and, in correspondence, on the lever actuator 55, at the end of an arm 63 thereof, a hook 64, oriented in the opposite direction to the previous hook 62.

    Par exemple, et tel que représenté, le crochet 62 du levier de déclenchement 51 est tourné du côté opposé à la manette de manoeuvre 14, et le crochet 64 du levier d'actionnement 55 est tourné en direction de cette manette de manoeuvre 14.For example, and as shown, the hook 62 of the release lever 51 is turned to the side opposite the operating lever 14, and the hook 64 of the lever 55 is turned towards this joystick operation 14.

    Dans la forme de réalisation représentée, le ressort de rappel 54 du levier de déclenchement 51 est un ressort de torsion, qui, par sa partie médiane de torsion 65, est engagé sur un moyeu 66 de ce levier de déclenchement 51 présentant en saillie un ergot 67 pour sa retenue, en sorte que, au montage, et tel que représenté à la figure 8, il appartient, avec ce levier de déclenchement 51, à un même sous-ensemble 68.In the embodiment shown, the spring return 54 of the release lever 51 is a spring of torsion, which, by its middle part of torsion 65, is engaged on a hub 66 of this trigger lever 51 having at a lug 67 protrudes for its retention, so that, during assembly, and as shown in figure 8, it belongs, with this trip lever 51, to the same sub-assembly 68.

    En pratique, la partie médiane de torsion 65 du ressort de rappel 54 est prise entre le bras 53 du levier de déclenchement 51 et l'ergot 67 du moyeu 66 de celui-ci. In practice, the middle torsion part 65 of the spring 54 is taken between the arm 53 of the lever trigger 51 and the lug 67 of the hub 66 thereof.

    L'une des branches 69 du ressort de rappel 54 est en appui sur un ergot 70 prévu à cet effet en saillie sur la paroi principale 25 du capot 20, tandis que son autre branche 72 porte sur un épaulement 73 du levier de déclenchement 51, en étant en pratique engagée derrière un ergot 74 prévu en saillie sur cet épaulement 73.One of the branches 69 of the return spring 54 is in support on a lug 70 provided for this purpose projecting from the wall main 25 of cover 20, while its other branch 72 bears on a shoulder 73 of the trigger lever 51, in being in practice engaged behind a lug 74 provided for projecting on this shoulder 73.

    Sur sa face opposée au relais sensible 22, le bras 53 du levier de déclenchement 51 sur lequel peut agir ce relais sensible 22 est soumis à un ressort d'amortissement 75 qui est lui-même soumis au levier d'actionnement 55.On its face opposite to the sensitive relay 22, the arm 53 trigger lever 51 on which this relay can act sensitive 22 is subjected to a damping spring 75 which is itself subject to the actuating lever 55.

    En pratique, ce ressort d'amortissement 75 est un ressort de torsion qui, par sa partie médiane de torsion 76, est engagé sur un moyeu 77 du levier de déclenchement 51 dirigé axialement en sens opposé au moyeu 66 précédent, figure 3, et, outre le bras 53 sur lequel peut agir le relais sensible 22 et sur lequel porte l'une des branches 78 du ressort d'amortissement 75, le levier de déclenchement 51 comporte un autre bras 79, qui contrebute l'autre des branches 80 de ce ressort d'amortissement 75.In practice, this damping spring 75 is a torsion spring which, by its central torsion part 76, is engaged on a hub 77 of the trigger lever 51 directed axially in the opposite direction to the previous hub 66, FIG. 3, and, in addition to the arm 53 on which the sensitive relay 22 can act and on which one of the branches 78 of the spring bears damping 75, the trigger lever 51 includes a other arm 79, which buttresses the other of the branches 80 of this damping spring 75.

    Comme précédemment, le moyeu 77 du levier de déclenchement 51 présente en saillie un ergot 81, visible sur les figures 9, 11 et 12, pour la retenue du ressort d'amortissement 75, en sorte que, au montage, ce ressort d'amortissement 75 appartient, avec le levier de déclenchement 51, à un même sous-ensemble que ce levier de déclenchement 51, en l'espèce le sous-ensemble 68.As before, the hub 77 of the lever trigger 51 has a protruding lug 81, visible on Figures 9, 11 and 12, for spring retention damping 75, so that, when mounted, this spring damping 75 belongs, with the trigger lever 51, to the same sub-assembly as this trigger lever 51, in this case the subset 68.

    Pour des raisons qui apparaítront ci-après, la branche 80 du ressort d'amortissement 75 s'étend au-delà du bras 79 du levier de déclenchement 51.For reasons which will appear below, the branch 80 of the damping spring 75 extends beyond the arm 79 of the trip lever 51.

    Dans la forme de réalisation représentée, le ressort d'ouverture 60 est un ressort de torsion, qui, par sa partie médiane de torsion 82, est engagé sur un moyeu 83 du levier d'actionnement 55 présentant en saillie un ergot 84 pour sa retenue, en sorte que, au montage, et tel que représenté sur les figures 4 et 5, il appartient, avec ce levier d'actionnement 55, à un même sous-ensemble 85. In the embodiment shown, the spring opening 60 is a torsion spring, which by its part torsional center 82, is engaged on a hub 83 of the lever actuator 55 projecting from a lug 84 for its retained, so that, during assembly, and as shown in Figures 4 and 5, it belongs, with this lever actuator 55, to the same sub-assembly 85.

    La branche 86 du ressort d'ouverture 60 est en appui contre un plot 87, qui, solidaire du capot 20, vient en pratique d'un seul tenant de la paroi principale 25 de celui-ci.The branch 86 of the opening spring 60 is in support against a stud 87, which, integral with the cover 20, comes in practical in one piece from the main wall 25 of this one.

    Dans la forme de réalisation représentée, ce plot 87 est allongé, et, suivant l'invention, il présente un chanfrein 88 à son extrémité libre, figure 7, pour une mise sous contrainte automatique du ressort d'ouverture 60 au montage.In the embodiment shown, this pad 87 is elongated, and, according to the invention, it has a chamfer 88 at its free end, FIG. 7, for placing under automatic constraint of the opening spring 60 during assembly.

    L'autre des branches 89 du ressort d'ouverture 60 est en appui contre un épaulement axial 90 du levier d'actionnement 55, et, du côté opposé à celui-ci, elle longe, au moins localement, un autre épaulement axial 91 de ce levier d'actionnement 55.The other of the branches 89 of the opening spring 60 is resting against an axial shoulder 90 of the actuating lever 55, and, on the opposite side thereof, it runs, at least locally, another axial shoulder 91 of this lever actuation 55.

    Par exemple, et tel que représenté, l'épaulement axial 90 est formé par un ergot 92 en saillie sur le bras 63, et l'épaulement axial 91 appartient à une paroi 93, qui est également en saillie sur ce bras 63, et sur la tranche de laquelle porte la branche 86 du ressort d'ouverture 60 avant le montage du sous-ensemble 85 sur le capot 20.For example, and as shown, the axial shoulder 90 is formed by a lug 92 projecting from the arm 63, and the axial shoulder 91 belongs to a wall 93, which is also protruding on this arm 63, and on the edge of which carries the branch 86 of the opening spring 60 before mounting the sub-assembly 85 on the cover 20.

    Un circuit de test 40 étant prévu, comme indiqué précédemment, la branche 89 du ressort d'ouverture 60 comporte un prolongement 94, qui, par deux coudes de sens inverses, est décalé de sa partie courante.A test circuit 40 being provided, as indicated previously, the branch 89 of the opening spring 60 comprises an extension 94, which, by two bends in opposite directions, is offset from its current part.

    Pour son action sur le dispositif de déclenchement principal 11, le levier d'actionnement 55 porte, en bout de son bras 58, un doigt 95, qui, allongé axialement, est engagé dans le boítier 12, à la faveur de la boutonnière 19 de celui-ci.For its action on the triggering device main 11, the actuating lever 55 carries, at the end of its arm 58, a finger 95, which, elongated axially, is engaged in the housing 12, in favor of the buttonhole 19 thereof.

    Du côté opposé à ce doigt 95, le bras 58 porte un ergot 126 sur le trajet duquel se trouve interposée la branche 80 du ressort d'amortissement 75.On the side opposite this finger 95, the arm 58 carries a lug 126 on the path of which the branch 80 of the damping spring 75.

    Outre les bras 58, 63, le levier d'actionnement 55 comporte un troisième bras 96, et il porte, en bout de celui-ci, une palette 97, formant voyant, qui, en position de déclenchement, est à l'aplomb d'une fenêtre 98 du capot 20, et, plus précisément, de la portion de façade de la paroi latérale 26 de celui-ci. In addition to the arms 58, 63, the actuating lever 55 has a third arm 96, and it carries, at the end of it, a pallet 97, forming a sight glass, which, in the position of trigger, is plumb with a window 98 of the cover 20, and, more precisely, from the front portion of the side wall 26 of it.

    D'un seul tenant avec la palette 97 qu'il porte, le levier d'actionnement 55 est en pratique en matière synthétique colorée, et par exemple en matière synthétique rouge.In one piece with the 97 pallet he is carrying, the actuating lever 55 is in practice made of synthetic material colored, for example in red synthetic material.

    Dans la forme de réalisation représentée, la fenêtre 98 du capot 20 est fermée par un hublot 99.In the embodiment shown, the window 98 of the cover 20 is closed by a porthole 99.

    Sur le levier d'actionnement 55 se trouve par ailleurs monté rotatif un levier de réarmement 100 qui, sous la sollicitation de moyens élastiques de polarisation 105, est apte à porter par un ergot 103 sur une piste fixe 104, au moins pour la configuration de déclenchement, et qui, par un nez 101, est alors interposé sur le trajet d'un ergot 15 solidaire de la manette de manoeuvre 14 du dispositif de déclenchement principal 11.On the actuating lever 55 is also located rotatably mounted a reset lever 100 which, under the biasing of elastic polarization means 105, is able to be carried by a lug 103 on a fixed track 104, at least for the trigger configuration, and which, via a nose 101, is then interposed on the path of a lug 15 integral with the operating lever 14 of the triggering device main 11.

    En pratique, pour le montage de ce levier de réarmement 100, le levier d'actionnement 55 présente, en saillie sur un quatrième bras 106, un tourillon 107, qui s'étend axialement en saillie du même côté que le doigt 95.In practice, for mounting this reset lever 100, the actuating lever 55 has, projecting from a fourth arm 106, a pin 107, which extends axially projecting from the same side as finger 95.

    Dans les formes de réalisation représentées, les moyens élastiques de polarisation 105 de ce levier de réarmement 100 sont d'un seul tenant avec celui-ci.In the embodiments shown, the means polarization elastic 105 of this reset lever 100 are all in one piece with this one.

    Dans la forme de réalisation plus particulièrement représentée sur les figures 1 à 13, ils prennent appui sur le levier d'actionnement 55.In the embodiment more particularly shown in Figures 1 to 13, they are supported on the actuating lever 55.

    Il s'agit en pratique d'une languette coudée qui, par l'une de ses branches, s'étend en porte à faux à compter du levier de réarmement 100, et dont l'autre branche porte librement sur le bras 96 du levier d'actionnement 55.In practice, it is a bent tongue which, by one of its branches, extends cantilevered from reset lever 100, and the other branch of which carries freely on the arm 96 of the actuating lever 55.

    Conjointement, dans la forme de réalisation représentée, la piste fixe 104 sur laquelle porte l'ergot 103 du levier de réarmement 100 est formée par la tranche de la platine 48.Jointly, in the embodiment shown, the fixed track 104 on which the lug 103 bears of the reset lever 100 is formed by the edge of the platinum 48.

    Sur le trajet de la branche 89 du ressort d'ouverture 60, et, plus précisément, sur le trajet de son prolongement 94, est interposée une languette d'autocoupure 108 appartenant au circuit de test 40.On the path of branch 89 of the opening spring 60, and, more precisely, on the path of its extension 94, is interposed a self-cutting tab 108 belonging to the test circuit 40.

    Conjointement, ce circuit de test 40 comporte une languette de connexion 109 qui, solidaire du capot 20, porte librement sur une borne de connexion 110 solidaire du boítier 12, figure 10.Together, this test circuit 40 includes a connection tab 109 which, integral with the cover 20, carries freely on a connection terminal 110 secured to the housing 12, figure 10.

    En pratique, la languette d'autocoupure 108 et la languette de connexion 109 appartiennent l'une et l'autre à une lamelle métallique 111, dont elles forment d'un seul tenant des prolongements latéraux, et qui est rapportée sur le capot 20, et, plus précisément, sur des colonnettes 112 prévues à cet effet en saillie sur la paroi principale 25 de ce capot 20.In practice, the self-cutting tab 108 and the connection tab 109 both belong to a metallic strip 111, of which they form in one piece lateral extensions, and which is attached to the cover 20, and, more specifically, on posts 112 provided for this protruding effect on the main wall 25 of this cover 20.

    Dans la forme de réalisation représentée, la borne de connexion 110 est formée par le conducteur électrique 18N de neutre situé en amont dans le circuit correspondant, et, plus précisément, par l'extrémité de l'enroulement 37N solidarisé au tronçon de ce conducteur électrique 18N de neutre parallèle à la paroi principale 25 du capot 20.In the embodiment shown, the terminal connection 110 is formed by the electrical conductor 18N of neutral located upstream in the corresponding circuit, and, more precisely, by the end of the 37N winding secured to the section of this parallel neutral 18N electrical conductor to the main wall 25 of the cover 20.

    Pour favoriser son contact avec cette borne de connexion 110, la languette de connexion 109 est coudée.To promote contact with this terminal connection 110, the connection tab 109 is bent.

    De manière usuelle, le circuit de test 40 est sous le contrôle d'un bouton de test 113 à la disposition de l'usager.Usually, the test circuit 40 is under the control of a test button 113 available to the user.

    En pratique, ce bouton de test 113 intervient sur la portion de façade de la paroi latérale 26 du capot 20, à la faveur d'une échancrure 114 de celle-ci.In practice, this test button 113 acts on the front portion of the side wall 26 of the cover 20, at the favor of a notch 114 thereof.

    Il porte une lamelle métallique 115 comportant deux branches, à savoir, une branche 116 longue, destinée à venir coopérer avec la patte 42 libre de la résistance 41, et une branche 117, courte, destinée à coopérer avec la branche 86 du ressort d'ouverture 60.It carries a metal strip 115 comprising two branches, namely, a long branch 116, intended to come cooperate with the tab 42 free from the resistor 41, and a branch 117, short, intended to cooperate with branch 86 of opening spring 60.

    Le bouton de test 113 est par ailleurs soumis à des moyens élastiques de polarisation 118, qui le sollicitent en permanence dans une direction de butée pour laquelle les branches 116, 117 de la lamelle métallique 115 sont en l'air.The test button 113 is also subjected to elastic polarization means 118, which urge it in permanently in a stop direction for which the branches 116, 117 of the metal strip 115 are in the air.

    Ainsi qu'on le notera, le mécanisme de déclenchement 24 comportant, sous la forme de pièces distinctes, plusieurs ressorts, en l'espèce le ressort de rappel 54 du levier de déclenchement 51, le ressort d'ouverture 60, et le ressort d'amortissement 75, chacun de ces ressorts 54, 60, 75 appartient à un sous-ensemble, 68 ou 85, par l'intermédiaire duquel il est avantageusement susceptible d'être rapporté sur le capot 20.As will be noted, the trigger mechanism 24 comprising, in the form of separate parts, several springs, in this case the return spring 54 of the trigger 51, opening spring 60, and spring damping 75, each of these springs 54, 60, 75 belongs to a subset, 68 or 85, through from which it is advantageously likely to be reported on the cover 20.

    Au montage, et indépendamment du détecteur de défaut 21 et de la résistance 41 du circuit de test 40, il est donc d'abord procédé à l'assemblage de ces deux sous-ensembles 68 et 85.During assembly, and independently of the fault detector 21 and resistor 41 of the test circuit 40, so it is first proceeded to assemble these two subsets 68 and 85.

    Après la mise en place du blindage métallique 46 et du relais sensible 22, ces deux sous-ensembles 68 et 85 sont rapportés à leur tour sur le capot 20.After the installation of the metal shield 46 and the sensitive relay 22, these two subsets 68 and 85 are reported in turn on the cover 20.

    Le sous-ensemble 68 est mis en place avant le sous-ensemble 85, ou après celui-ci.The sub-assembly 68 is put in place before the sub-assembly 85, or after it.

    Quoi qu'il en soit, le sous-ensemble 85 porte préférentiellement dès l'origine le levier de réarmement 100, et, lors de sa mise en place, par engagement sur l'axe 56 correspondant du capot 20, la branche 86 du ressort d'ouverture 60 vient porter sur le chanfrein 88 du plot 87 du capot 20, en sorte que, suivant ensuite la pente de ce chanfrein 88, tel que schématisé par une flèche F1 sur la figure 7, elle met progressivement en contrainte le ressort d'ouverture 60, jusqu'à son engagement définitif sur le plot 87.Anyway, the subset 85 carries preferably from the start the reset lever 100, and, during its installation, by engagement on axis 56 corresponding cover 20, branch 86 of the opening spring 60 comes to bear on the chamfer 88 of the stud 87 of the cover 20, in so that, then following the slope of this chamfer 88, such that shown schematically by an arrow F1 in FIG. 7, it puts progressively stressing the opening spring 60, until its final engagement on plot 87.

    Ainsi, la mise sous contrainte du ressort d'ouverture 60 se fait avantageusement de manière aisée et systématique.Thus, the stressing of the opening spring 60 is advantageously done easily and systematically.

    Conjointement, le levier d'actionnement 55 vient porter par son bras 96 sur un plot 120 qui, solidaire du capot 20, en venant en pratique d'un seul tenant de la paroi principale 25 de celui-ci, définit sa position de déclenchement, tel que représenté sur la figure 9.At the same time, the actuation lever 55 comes to carry by its arm 96 on a stud 120 which, integral with the cover 20, in coming in practice in one piece from the main wall 25 of it, sets its trigger position, such that shown in figure 9.

    Pour faciliter la mise en place du sous-ensemble 85, ce plot 120 peut également être chanfreiné.To facilitate the installation of the sub-assembly 85, this stud 120 can also be chamfered.

    Ainsi qu'on l'aura compris, lors des manipulations du sous-ensemble 85 nécessaires à sa mise en place sur le capot 20, le maintien du ressort d'ouverture 60 sur le levier d'actionnement 55 se trouve confirmé par les épaulements axiaux 90 et 91 de ce levier d'actionnement 55 entre lesquels s'étend sa branche 89.As will be understood, when handling the sub-assembly 85 necessary for its installation on the hood 20, maintaining the opening spring 60 on the lever 55 is confirmed by the axial shoulders 90 and 91 of this actuating lever 55 between which extends its branch 89.

    Après la mise en place des sous-ensembles 68 et 85 sur le capot 20, il est procédé à celle de la platine 48 et de la lamelle métallique 111. After the installation of sub-assemblies 68 and 85 on the cover 20, that of the plate 48 and the metal lamella 111.

    Il suffit, ensuite, de rapporter le capot 20 sur le boítier 12.Then simply bring the cover 20 to the case 12.

    La languette de connexion 109 de la lamelle métallique 111 vient alors porter d'elle-même sur la borne de connexion 110 correspondante.The connecting tab 109 of the metal strip 111 then comes to carry itself on the connection terminal 110 corresponding.

    Pour le passage du mécanisme de déclenchement 24 de sa configuration de déclenchement représentée sur la figure 9 à sa configuration d'enclenchement, la manette de manoeuvre 14 du dispositif de déclenchement principal 11 est basculée de sa position de déclenchement représentée sur cette figure 9 à sa position d'enclenchement représentée sur la figure 12, tel que schématisé par une flèche F2 sur les figures 9 et 11.For the passage of the trigger mechanism 24 of its trigger configuration shown in Figure 9 to its engagement configuration, the control lever 14 of the main trip device 11 is tilted from its trigger position shown in this figure 9 at its engagement position shown in Figure 12, such that shown schematically by an arrow F2 in FIGS. 9 and 11.

    Par son ergot 15, la manette de manoeuvre 14 vient porter sur le nez 101 du levier de réarmement 100, tel que représenté à la figure 11, et, par l'intermédiaire de ce levier de réarmement 100, elle entraíne en rotation le levier d'actionnement 55 autour de l'axe 56, suivant la flèche F3 de la figure 11, cependant que, par son ergot 103, le levier de réarmement 100 suit la piste fixe 104.By its lug 15, the operating lever 14 comes wear on the nose 101 of the reset lever 100, such as shown in Figure 11, and, via this lever reset 100, it rotates the lever 55 around axis 56, along arrow F3 of Figure 11, however that, by its lug 103, the lever reset 100 follows the fixed track 104.

    A un certain moment, le crochet 64 du levier d'actionnement 55 efface élastiquement le levier de déclenchement 51 et s'engage au-delà du crochet 62 de celui-ci, tel que schématisé en traits interrompus sur la figure 12.At some point, the hook 64 of the lever actuator 55 resiliently clears the lever trigger 51 and engages beyond the hook 62 thereof, as shown in dashed lines in Figure 12.

    Tel que représenté à la figure 12, il en résulte l'apparition d'un jeu entre le percuteur 47 du relais sensible 22 et le bras 53 du levier de déclenchement 51.As shown in Figure 12, this results the appearance of a play between the striker 47 of the sensitive relay 22 and the arm 53 of the trigger lever 51.

    Le ressort d'ouverture 60 se trouve conjointement progressivement sous contrainte, cependant que, par son prolongement 94, sa branche 89 vient porter élastiquement sur la languette d'autocoupure 108.The opening spring 60 is located jointly gradually under duress, however that by its extension 94, its branch 89 comes to bear elastically on the self-cutting tab 108.

    Le mouvement de la manette de manoeuvre 14 étant poursuivi, l'ergot 15 de cette manette de manoeuvre 14 vient à échapper au nez 101 du levier de réarmement 100, après s'être trouvé aligné avec l'axe de rotation de la manette de manoeuvre 14 et celui du levier de réarmement 100.The movement of the operating lever 14 being continued, the lug 15 of this operating lever 14 comes to escape the nose 101 of the reset lever 100, after having found aligned with the axis of rotation of the operating lever 14 and that of the reset lever 100.

    Le levier d'actionnement 55 est alors l'objet d'un léger mouvement rétrograde de rotation au terme duquel il se trouve retenu en position d'enclenchement par le levier de déclenchement 51, par crochetage de son crochet 64 sur le crochet 62 de celui-ci, cependant que la branche 89 du ressort d'ouverture 60 reste au contact de la languette d'autocoupure 108.The actuation lever 55 is then the subject of a slight retrograde rotational movement at the end of which it found retained in the latching position by the trigger 51, by hooking its hook 64 on the hook 62 thereof, while the branch 89 of the spring 60 remains in contact with the self-cutting tab 108.

    Le basculement de la manette de manoeuvre 14 est alors poursuivi jusqu'à verrouillage en position d'enclenchement de celle-ci.The tilting of the operating lever 14 is then continued until locked in the engaged position of this one.

    Mais, ainsi qu'on le notera, ce verrouillage, qui implique la fermeture des contacts du dispositif de déclenchement principal 11, n'intervient qu'après l'armement du mécanisme de déclenchement 24, qui, de ce fait, peut agir immédiatement dans le cas d'un défaut.But, as will be noted, this lock, which involves closing the contacts of the device main trigger 11, only intervenes after arming of the trigger mechanism 24, which, therefore, can act immediately in the event of a fault.

    Dans l'éventualité d'un tel défaut, le percuteur 47 du relais sensible 22 vient agir sur le bras 53 du levier de déclenchement 51, et, par rotation autour de son axe 52, suivant la flèche F4 de la figure 12, celui-ci provoque la rupture des moyens d'accrochage débrayables 59, ce qui libère le levier d'actionnement 55.In the event of such a defect, the striker 47 of the sensitive relay 22 acts on the arm 53 of the trigger 51, and, by rotation about its axis 52, according to arrow F4 in FIG. 12, this causes the rupture of the disengageable attachment means 59, which frees the actuating lever 55.

    Sous la sollicitation du ressort d'ouverture 60, celui-ci revient à sa position de déclenchement.Under the stress of the opening spring 60, it returns to its release position.

    Ce faisant, il agit par son doigt 95 sur l'organe de déclenchement du dispositif de déclenchement principal 11, ce qui provoque l'ouverture des contacts de celui-ci, et le retour de la manette de manoeuvre 14 à sa position de déclenchement.In doing so, he acts with his finger 95 on the organ of triggering of the main trigger device 11, this which causes the contacts to open, and return of the operating handle 14 to its release position.

    Conjointement, par son ergot 126, le levier d'actionnement 55 vient porter sur la branche 80 du ressort d'amortissement 75, et, sous la sollicitation qui en résulte pour lui, le levier de déclenchement 51 bascule autour de son axe 52 dans le sens opposé à la flèche F4 de la figure 12, ce qui le conduit à venir agir sur le percuteur 47 du relais sensible 22 et, ainsi, à provoquer le réarmement de celui-ci.Jointly, by its pin 126, the lever actuator 55 comes to bear on branch 80 of the spring depreciation 75, and, under the resulting stress for him, the trigger lever 51 swings around its axis 52 in the direction opposite to arrow F4 in FIG. 12, this which leads him to act on the striker 47 of the relay sensitive 22 and, thus, to cause the rearming thereof.

    Ainsi qu'on le comprendra, le ressort d'amortissement 75 épargne avantageusement au levier de déclenchement 51 le choc dû à l'action du levier d'actionnement 55.As will be understood, the damping spring 75 advantageously saves on the release lever 51 the shock due to the action of the actuating lever 55.

    Ainsi, en outre, qu'on le notera, le réarmement du relais sensible 22 se fait par le levier d'actionnement 55, et non pas par la manette de manoeuvre 14.Thus, moreover, as will be noted, the rearming of the sensitive relay 22 is made by the actuating lever 55, and not by the joystick 14.

    Il en résulte que, quelle que soit la position de cette manette de manoeuvre 14, ce relais sensible 22 n'est jamais ouvert, ce qui est avantageusement favorable au maintien de sa magnétisation.As a result, whatever the position of this operating lever 14, this sensitive relay 22 is never open, which is advantageously favorable to the maintenance of its magnetization.

    Lorsque le mécanisme de déclenchement 24 est en configuration d'enclenchement, la manette de manoeuvre 14 peut être basculée de sa position d'enclenchement à sa position de déclenchement, sans qu'il en résulte un déclenchement de ce mécanisme de déclenchement 24.When the trigger mechanism 24 is in switching configuration, the operating lever 14 can be tilted from its latching position to its trigger, without triggering this trigger mechanism 24.

    En effet, lors du mouvement correspondant, la manette de manoeuvre 14 efface simplement élastiquement le levier de réarmement 100, qui revient ensuite à sa position initiale sous la sollicitation de ses moyens élastiques de polarisation 105, sans qu'il en résulte une quelconque sollicitation sur le levier d'actionnement 55, et, donc, sur les moyens d'accrochage débrayables 59 par lesquels il est retenu en position d'enclenchement par le levier de déclenchement 51.Indeed, during the corresponding movement, the joystick maneuver 14 simply elastically clears the lever reset 100, which then returns to its original position under the use of its elastic polarization means 105, without resulting in any solicitation on the actuating lever 55, and therefore on the hooking means disengageable 59 by which it is retained in position of engagement by the trigger lever 51.

    Autrement dit, le dispositif de déclenchement différentiel 10 suivant l'invention reste alors avantageusement armé.In other words, the triggering device differential 10 according to the invention then advantageously remains armed.

    Il en est de même si, au contraire, la manette de manoeuvre 14 est basculée de sa position de déclenchement à sa position d'enclenchement.The same applies if, on the contrary, the joystick maneuver 14 is tilted from its release position to its position of engagement.

    S'il est agi sur le bouton de test 113, la lamelle métallique 115 ferme le circuit de test 40.If it is acted on the test button 113, the coverslip metallic 115 closes the test circuit 40.

    Du fait de la résistance 41, il se crée alors un déséquilibre entre les enroulements 37P et 37N du primaire du tore bobiné constituant le détecteur de défaut 21.Due to resistance 41, a imbalance between the windings 37P and 37N of the primary of the wound core constituting the fault detector 21.

    Assimilable à un défaut, ce déséquilibre provoque, suivant le processus précédent, l'ouverture du mécanisme de déclenchement 24.Similar to a defect, this imbalance causes, following the previous process, the opening of the trigger 24.

    Du fait de cette ouverture, la branche 89 du ressort d'ouverture 60 s'éloigne de la languette d'autocoupure 108 ; toute circulation de courant dans le circuit de test 40 est dès lors interrompue, même si l'action exercée sur le bouton de test 113 est poursuivie, ce qui ménage avantageusement la résistance 41.Due to this opening, the branch 89 of the spring opening 60 moves away from the self-cutting tab 108; any current flow in the test circuit 40 is as soon as interrupted, even if the action exerted on the button test 113 is continued, which advantageously protects the resistance 41.

    Suivant la variante de réalisation représentée sur les figures 14 à 16, la languette constituant les moyens élastiques de polarisation 105' du levier de réarmement 100 est droite, et elle s'étend entre deux butées fixes 125, 126, l'une avant, l'autre arrière, venues du capot 20.According to the variant shown on the Figures 14 to 16, the tongue constituting the elastic means polarization 105 ′ of the reset lever 100 is straight, and it extends between two fixed stops 125, 126, one before, the other rear, from the cover 20.

    Pour la configuration de déclenchement représentée sur la figure 15, cette languette porte sur la butée avant 125, en sorte que, comme précédemment, le levier de réarmement 100 porte lui-même, par son ergot 103, sur la piste fixe 104.For the trigger configuration shown on FIG. 15, this tab bears on the front stop 125, in so that, as before, the reset lever 100 carries itself, by its lug 103, on the fixed track 104.

    Comme précédemment, également, il est donc alors interposé par son nez 101 sur le trajet de l'ergot 15 de la manette de manoeuvre 14 du dispositif de déclenchement principal 11, pour le réarmement de l'ensemble.As before, also, so it's then interposed by its nose 101 on the path of the lug 15 of the operating lever 14 of the release device main 11, for rearming the unit.

    Par contre, pour la configuration d'enclenchement représentée sur la figure 16, la languette formant ces moyens élastiques de polarisation 105' porte sur la butée arrière 126.On the other hand, for the interlocking configuration shown in Figure 16, the tongue forming these means polarization elastic 105 'wears on the rear stop 126.

    Le levier de réarmement 100 étant de ce fait basculé, son ergot 103 ne porte plus sur la piste fixe 104, et son nez 101 est suffisamment effacé, c'est-à-dire suffisamment écarté de la manette de manoeuvre 14, pour qu'il ne soit plus en mesure d'interférer avec l'ergot 15 de celle-ci lors de son basculement.The reset lever 100 is therefore tilted, its lug 103 no longer relates to the fixed track 104, and its nose 101 is sufficiently erased, i.e. sufficiently discarded of the operating lever 14, so that it is no longer in able to interfere with the lug 15 thereof during its tilting.

    Ainsi, l'ouverture et la fermeture du dispositif de déclenchement principal 11 par la manette de manoeuvre 14 peuvent avantageusement se faire sans bruit ni sensation particulière pour l'opérateur, alors que, dans la forme de réalisation précédente, l'effacement élastique du levier de réarmement 100 étant au contraire susceptible d'engendrer un tel bruit et une telle sensation particulière.Thus, the opening and closing of the main trigger 11 by the joystick 14 can advantageously be done without noise or sensation particular for the operator, while in the form of previous embodiment, the elastic erasure of the rearmament 100 being on the contrary likely to generate a such noise and such a special feeling.

    Claims (25)

    1. A differential tripping device of the kind comprising. under a cover (20) by means of which it is disposed beside the casing (12) of a main tripping device (11), a fault detector (21) for supplying a differential current in response to a fault, a responsive relay (22) operated by the fault detector (21) and a tripping mechanism (24) which, under the control of the responsive relay (22), is capable of acting on the main tripping device (11), characterised in that the responsive relay (22) and the tripping mechanism (24) are carried by the cover (20) while the fault detector (21) is carried by the casing (12) of the main tripping device (11).
    2. A differential tripping device according to claim 1 characterised in that, a test circuit (40) using a resistor (41) being provided, the resistor (41) is carried by the casing (12) of the main tripping device (11).
    3. A differential tripping device according to claim 2 characterised in that, excluding the fault detector (21) and the resistor (41), all the components are carried by the cover (20).
    4. A differential tripping device according to any one of claims 1 to 3 characterised in that, the tripping mechanism (24) comprising in the form of separate parts a plurality of springs (54, 60, 75), each of said springs (54, 60, 75) belongs to a sub-assembly (68, 85), by means of which it is fitted to the cover (20).
    5. A differential tripping device according to any one of claims 1 to 4 characterised in that the tripping mechanism (24) comprises a tripping lever (51) which, mounted rotatably on a spindle (52) fixed with respect to the cover (20), comprises an arm (53) on which the responsive relay (22) can act, a return spring (54) which continuously urges the tripping lever (51) in the direction of the responsive relay (22), an actuating lever (55) which, mounted rotatably on a spindle (56) fixed with respect to the cover (20) and separate from the preceding spindle. comprises an arm (58) by means of which it can act on the main tripping device (11), disengageable latching means (59) by which the tripping lever (51) is capable of retaining the actuating lever (55) in an engaged position, and an opening spring (60) which continuously urges the actuating lever (55) in the direction of a tripping position which is angularly displaced from its engaged position.
    6. A differential tripping device according to claim 5 characterised in that the return spring (54) of the tripping lever (51) is a torsion spring which, by means of its central torsion portion (65), is engaged on a hub (66) of the tripping lever (51) having in projecting relationship a lug (67) for retaining same such that upon assembly it belongs with said tripping lever (51) to the same sub-assembly (68).
    7. A differential tripping device according to claim 5 characterised in that the opening spring (60) is a torsion spring which, by means of its central torsion portion (82), is engaged on a hub (83) of the actuating lever (55) having in projecting relationship a lug (84) for retaining same such that upon assembly it belongs with said actuating lever (55) to the same sub-assembly (85).
    8. A differential tripping device according to claim 7 characterised in that one of the limbs (86) of the opening spring (60) bearing against a projection (87) which is fixed with respect to the cover (20). said projection (87) has a chamfer (88) at its free end for automatically stressing said opening spring (60) upon assembly.
    9. A differential tripping device according to claim 8 characterised in that the other of the limbs (89) of the opening spring (60) bears against an axial shoulder (90) of the actuating lever (55) and on the side opposite thereto it at least locally extends along another axial shoulder (91) of said actuating lever (55).
    10. A differential tripping device according to claim 9 characterised in that, a test circuit (40) being provided, said other limb (89) of the opening spring (60) comprises a prolongation portion (94), in the path of movement of which is interposed an auto-interrupt tongue portion (108) belonging to said test circuit (40).
    11. A differential tripping device according to claim 5 characterised in that, on its face opposite to the responsive relay (22). the arm (53) of the tripping lever (51) on which said responsive relay (22) can act is subjected to the force of a damping spring (75) which is itself subjected to the action of the actuating lever (55).
    12. A differential tripping device according to claim 11 characterised in that the damping spring (75) is a torsion spring which, by means of its central torsion portion (76) is engaged on a hub (77) of the tripping lever (51) having in projecting relationship a lug (81) for retaining same in such a way that upon assembly said damping spring (75) with the tripping lever (51) belongs to the same sub-assembly (68) and besides the arm (53) on which the responsive relay (22) can act and against which bears one of the limbs (78) of the damping spring (75) the tripping lever (51) comprises another arm (79) which supports the other limb (80) of the damping spring (75).
    13. A differential tripping device according to claim 5 characterised in that mounted rotatably on the actuating lever (5) is a re-arming lever (100) which under the force of resilient biasing means (105, 105') is capable of bearing by means of a projection (103) against a fixed track (104), at least for the tripping configuration, and which by means of a nose (101) is then interposed in the path of movement of a lug (15) fixed with respect to the operating lever (14) of the main tripping device (11).
    14. A differential tripping device according to claim 13 characterised in that the resilient biasing means (105) of the re-arming lever (100) bear against the actuating lever (55).
    15. A differential tripping device according to claim 13 characterised in that the resilient biasing means (105') of the re-arming lever (100) extend between two fixed abutments (125, 126).
    16. A differential tripping device according to any one of claims 13 to 15 characterised in that the resilient biasing means (105, 105') of the re-arming lever (100) are in one piece with same.
    17. A differential tripping device according to any one of claims 13 to 16 characterised in that. the tripping mechanism (24) extending between the cover (20) and a plate (48) which is fixed with respect thereto, the fixed track (104) is formed by the edge of said plate (48).
    18. A differential tripping device according to claim 5 characterised in that the actuating lever (55) carries a blade (97) which in the tripping position is in vertical alignment with a window (98) in the cover (20).
    19. A differential tripping device according to claim 18 characterised in that in one piece with the blade (97) that is carries, the actuating lever (55) is of coloured synthetic material.
    20. A differential tripping device according to claim 5 characterised in that the actuating lever (55) carries at the end of an arm (58) a finger (95) which for its action on the main tripping device (11) is engaged in the casing (12) thereof by way of an opening (19) provided for that purpose in the casing (12).
    21. A differential tripping device according to any one of claims 1 to 20 characterised in that, a test circuit (40) being provided, said test circuit (40) comprises a connecting tongue portion (109) which, being fixed with respect to the cover (20), bears freely on a connecting terminal (110) which is fixed with respect to the casing (12) of the main tripping device (11).
    22. A differential tripping device according to claims 10 and 21 in combination characterised in that the connecting tongue portion (109) and the auto-interrupt tongue portion (108) both belong to a metal plate portion (111) which is fitted to the cover (20).
    23. A differential tripping device according to any one of claims 1 to 22 characterised in that engagement means (35) are at least locally operatively disposed between the cover (20) and the casing (12) of the main tripping device (11) for pre-assembly of the arrangement.
    24. A differential tripping device according to any one of claims 1 to 23 characterised in that the cover (20) at least locally forms a hood (27) by means of which it covers the corresponding portion of the edge of the casing (12) of the main tripping device (11).
    25. A differential tripping device according to any one of claims 1 to 24 characterised in that on one side at least the cover (20) has an opening (29) level with the connecting terminals (13P, 13N) of the main tripping device (11).
    EP19950401233 1994-05-31 1995-05-29 Differential release device Expired - Lifetime EP0685867B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9406585 1994-05-31
    FR9406585A FR2720548B1 (en) 1994-05-31 1994-05-31 Differential release device.

    Publications (2)

    Publication Number Publication Date
    EP0685867A1 EP0685867A1 (en) 1995-12-06
    EP0685867B1 true EP0685867B1 (en) 1999-11-17

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19950401233 Expired - Lifetime EP0685867B1 (en) 1994-05-31 1995-05-29 Differential release device

    Country Status (4)

    Country Link
    EP (1) EP0685867B1 (en)
    DE (1) DE69513329T2 (en)
    ES (1) ES2138162T3 (en)
    FR (1) FR2720548B1 (en)

    Families Citing this family (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2777110B1 (en) * 1998-04-03 2000-06-23 Legrand Sa MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER
    ES2274570T3 (en) * 1998-05-29 2007-05-16 Hager Electro S.A. COUPLING DEVICE OF TWO MODULAR ELECTRICAL ELEMENTS TOGETHER.
    DE10220622B4 (en) * 2002-05-08 2004-09-09 Siemens Ag Residual-current device
    DE102005016155A1 (en) * 2005-04-07 2006-10-12 Condor-Werke Gebr. Frede Gmbh & Co. Kg Residual-current device
    CN104134589B (en) * 2014-07-17 2016-01-20 正泰集团股份有限公司 A kind of low-voltage circuit breaker with residual current trip gear
    FR3121271B1 (en) * 2021-03-26 2023-03-31 Schneider Electric Ind Sas Electrical protection device

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4667263A (en) * 1985-04-22 1987-05-19 General Electric Company Ground fault module for ground fault circuit breaker
    AT384120B (en) * 1985-12-02 1987-10-12 Felten & Guilleaume Ag Oester Fault current and line circuit breakers
    FR2663153B1 (en) * 1990-06-07 1992-09-11 Legrand Sa DIFFERENTIAL TRIGGERING DEVICE.
    FR2687838B1 (en) * 1992-02-21 1994-04-08 Merlin Gerin SINGLE POLE AND NEUTRAL DIFFERENTIAL CIRCUIT BREAKER WITH TEST CIRCUIT.

    Also Published As

    Publication number Publication date
    DE69513329D1 (en) 1999-12-23
    DE69513329T2 (en) 2000-03-23
    FR2720548B1 (en) 1996-08-30
    EP0685867A1 (en) 1995-12-06
    FR2720548A1 (en) 1995-12-01
    ES2138162T3 (en) 2000-01-01

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