EP0028958A1 - Circuit-breaking switch, its release mechanism - Google Patents

Circuit-breaking switch, its release mechanism Download PDF

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Publication number
EP0028958A1
EP0028958A1 EP80401516A EP80401516A EP0028958A1 EP 0028958 A1 EP0028958 A1 EP 0028958A1 EP 80401516 A EP80401516 A EP 80401516A EP 80401516 A EP80401516 A EP 80401516A EP 0028958 A1 EP0028958 A1 EP 0028958A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
movable contact
pallet
breaker according
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80401516A
Other languages
German (de)
French (fr)
Other versions
EP0028958B1 (en
Inventor
Norbert Signorelli
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
Original Assignee
Legrand SA
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 filed Critical Legrand SA
Publication of EP0028958A1 publication Critical patent/EP0028958A1/en
Application granted granted Critical
Publication of EP0028958B1 publication Critical patent/EP0028958B1/en
Expired legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/1009Interconnected mechanisms
    • H01H71/1027Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/40Combined electrothermal and electromagnetic mechanisms
    • H01H71/405Combined electrothermal and electromagnetic mechanisms in which a bimetal forms the inductor for the electromagnetic mechanism
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/58Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/505Latching devices between operating and release mechanism
    • H01H2071/506Latching devices between operating and release mechanism using balls or rollers in the latching device

Definitions

  • the present invention relates generally to the circuit breakers, whether it is a simple monopolar circuit breaker, or whether it is one of the poles of a multipolar circuit breaker.
  • such a circuit breaker comprises, in a housing, a first contact, which is fixed, a second contact, which is movably mounted between a latching position and a tripping position, and which is biased towards the latter by an opening spring, an engagement and trigger handle, which is movably mounted between an engagement position and a trigger position, and which is biased towards this trigger position by a return spring , a locking mechanism, which is established between the engagement and trigger handle and the housing, and which is capable of disengageably holding said engagement and trigger handle in the engagement position, a hooking mechanism , which is established between the latching and tripping lever and the movable contact, and which comprises two latching members capable of engaging disengageably one with the other for maintaining the movable contact in the latching position, and at least one triggering member, magnetic and / or thermal.
  • the triggering device in question causes the breakage of the latching mechanism, that is to say the release, relative to each other, of the latching members that this mechanism, and this results in the release of the movable contact, which, under the stress of its spring opening, then passes from its engagement position to its trigger position.
  • the fastening members at which the breaking of the fastening mechanism is made up of specific parts, having by themselves no direct action on the movable contact.
  • one of the problems to be solved in the production of a circuit breaker is the obtaining, under a determined volume, of high performance, and in particular of a high breaking capacity, and, for obtaining high performance, requires, among other things, that the opening of the moving contact can be done very quickly, lé - time between the occurrence of a default and the full opening of the moving contact to be in practice in addition to the order of a thousandth of a second.
  • such an acceleration mechanism is usually formed by an electromagnetic circuit traversed by the current to be controlled, the same one which moreover constitutes an electromagnetic triggering member.
  • the present invention generally relates to a provision allowing, at equal or even higher performance, to overcome if desired the implementation of an acceleration mechanism, and also having other advantages.
  • circuit breaker of the kind mentioned above and characterized in that one of the attachment members of its attachment mechanism is an integral part of the opening spring of the movable contact.
  • this opening spring is a torsion spring, one of the end branches of which is engaged with a fixed stop fixed to the housing, and which constitutes a fastening member by the other of its end branches.
  • one of the attachment members is constituted by a part, namely the opening spring, capable by itself of acting directly on the movable contact, without other intermediary .
  • the opening time of the movable contact is advantageously reduced ; as soon as the latching mechanism has broken and the end branch forming the latching member of the opening spring of the movable contact is thus released, this opening spring immediately causes the starting of the movable contact, without a any catch-up.
  • this end branch forming a hooking member and therefore its moment of inertia, are so reduced that they practically do not intervene in the movement of the movable contact and that they therefore introduce no delay. at the start of it.
  • Photographic examination by ultra-fast camera of the triggering process also shows that the bending of which is the object in the engagement position, this end branch forming a hooking member for the opening spring, in particular to ensure the corresponding contact pressure, is recovered, this end branch then returning to its initial rectilinear configuration of rest, only after the movable contact has passed into the tripping position, and in any case only after the arc which started when the moving contact was triggered and the fixed contact left the moving contact.
  • the overall mass of the parts to be moved when triggered is reduced, the speed of movement of this mass, at equal energy, is increased, and therefore, reduces the opening time accordingly of the mobile contact.
  • Such a circuit breaker generally comprises a case 10.
  • this box is formed of two shells 11, 11 ′ of unequal importance which are suitably faced with one another, and which are suitably connected to each other by screws or rivets in place thanks to.passages 12.
  • the shoemaker 10 forms, at its lower part, a fixing sole 13 adapted, in cooperation with an elastic claw 14, to allow attachment thereof to a rail of the type known as a hat 15, as shown schematically in broken lines in Figure 1.
  • the housing 10 laterally contains two connection terminals 16A, 16B, which are accessible from the outside.
  • each of these connection terminals consists of a bracket 17A, 17B, engaged in sliding on a metal strip 18A, 18B, and a screw 19A, 19 B , engaged in screwing on said bracket.
  • the housing 10 contains a first contact 20A, which is fixed, and which, in the embodiment shown, is formed by an extension of the metal strip 1 8 A of the connection terminal 16A, this extension locally carrying this effect a contact pad 21, and, in relation to the latter, a second contact 20B, which is mounted movably between an engagement position, FIGS. 1 and 2, for which it is in abutment against the fixed contact 20A, and a tripping position, FIGS. 11 and 12, for which it is remote from the fixed contact 20A.
  • a first contact 20A which is fixed, and which, in the embodiment shown, is formed by an extension of the metal strip 1 8 A of the connection terminal 16A, this extension locally carrying this effect a contact pad 21, and, in relation to the latter, a second contact 20B, which is mounted movably between an engagement position, FIGS. 1 and 2, for which it is in abutment against the fixed contact 20A, and a tripping position, FIGS. 11 and 12, for which it is remote from the fixed contact 20A.
  • the movable contact 20 B is of relatively small dimensions.
  • the movable contact 20B is rotatably mounted on a support pin 23, which extends transversely in the housing 10, and which, according to one aspect of the invention, is conductive, for electrical connection between this movable contact 20B and the corresponding connection terminal 16B.
  • this support pin 23 is engaged in a retaining flange 24, and, at the other of its ends, it is in continuity with a bent bracket 25, the assembly being formed from a section of round wire suitably bent.
  • bracket 25 On the end of the bracket 25 is fixed, for example by welding, to one end of a bimetallic strip 2 6 which extends longitudinally in the housing 10, one of the connection terminals 16A, 16B to the other, and which, at its other end, is fixed, for example by welding, to a wing 27, folded square for this purpose, of the metal strip 18B of the connection terminal 16B.
  • connection terminal is made successively through the metal strip 1 8B , the bimetallic strip 2 6 , and the section of round wire constituting the bracket 25 and the support axis 23, without any braid capable of hampering the movement of this movable contact 20B.
  • the bimetal-2 6 which forms a thermal trigger member, is fixed at each of its ends, in the manner of a recessed beam.
  • the movable contact 20B is biased towards its tripping position by an opening spring 29.
  • the central torsional part 33 of the opening spring 29 extends generally around the support axis 23 of the movable contact 20B, and the mass of this spring 29 is thus essentially concentrated in the vicinity of this support axis.
  • the middle torsion 33 of the opening spring 29 is split-into two portions.s, namely a first portion 34, which is the largest, and which s 'extends from a first side of the movable contact 20B, in continuity with the fixed end branch 30 of this opening spring 29, and a second portion 34', which is the least important, and which extends from the 'other side of the movable contact 20B, in. continuity with the free end branch 32 of said opening spring 29.
  • the second portion 34 'of the central torsion part 33 of the opening spring 29, that which is in continuity with the free end branch 32 of this spring, is reduced to a fraction of a turn, half of turns for example, as shown.
  • the housing 10 also contains an interlocking and tripping lever 37 which is mounted therein movable between a latching position, FIGS. 1 and 2, and a tripping position, FIG. 11.
  • this interlocking and triggering lever 37 forms a slide with linear displacement, which is mounted movable longitudinally in the housing 10, from one of the connection terminals 16A, 16B to the other.
  • This slide which is hollow, and generally forms a box open laterally and at each of its ends, is engaged on the bimetallic strip 26, at a distance from the latter.
  • the cover 39 On the surface, the cover 39 carries a gripping projection 41, which is accessible from the outside of the housing 10, through a passage 44 provided for this purpose therein.
  • the engagement and trigger lever 37 thus formed is biased towards its trigger position by a return spring 42; it is, in the embodiment shown, a torsion spring, the branches of which are symmetrical to each other, are each respectively in engagement, one with the metal strip 18 B of the connection terminal 16B, by virtue of a drilling thereof, the other with the engagement and tripping lever 37, also by virtue of a drilling thereof, FIG. 7, and of which installation can thus be easily ensured, either manually or automatically.
  • this locking mechanism 43 comprises a free rolling member 45, which consists of a single roller extending transversely in the housing 10, and which is capable of cooperating in locking with a notch 47 with oblique sides formed transversely to the surface of an intermediate floor 46 of this housing 10, integral, in the embodiment shown, with the shell 11 'thereof.
  • This roller 45 is disposed between two shoulders 48, 49 of the engagement and trigger lever 37, formed by means of a slot affecting the sole 38 of the latter.
  • the housing 10 contains another trigger member, which is an electromagnetic trigger member, and which, in the usual manner, is formed by a cylinder head 50 and a pallet 51 pivotally mounted with respect to this cylinder head.
  • the cylinder head 50 and the pallet 51 are housed inside the engagement and trigger lever 37 and are carried by the latter, so that this engagement and trigger lever 37, this cylinder head 50, and this pallet 51 belong jointly to the same mobile assembly.
  • the cylinder head 50 forms longitudinally a gutter, by which it is engaged on the bimetallic strip 26, at a distance from the latter, on the side of this bil # me opposite to the flange 40 of the interlocking and tripping lever 37.
  • the pallet 51 is arranged on the other side of the bimetallic strip 26 vis-à-vis the cylinder head 50, and therefore extends between this bimetallic strip 26 and the flange 40 of the engagement and tripping lever 37.
  • interlocking means are provided between the cylinder head 50 and the pallet 51.
  • the cylinder head 50 and the armature 51 each have, facing each other, a pair of lugs 53, 54, and the interlocking means in question comprise, for each pair of legs 53, 54, a pin 55 which is carried projecting by one of them and which is engaged in a bowl or a hole 56 on the other.
  • the pins 55 thus provided are projecting from the pallet 51 and are formed by simple local stamping thereof; vice versa, these pins 55 can be formed on the cylinder head 50.
  • the interlocking means thus formed have a double function: on the one hand they provide a pivoting mounting of the pallet 51 with respect to the cylinder head 50, perpendicular to the axis of the central torsion part 33 of the spring opening 29, and on the other hand they couple this cylinder head 50 and this pallet 51 longitudinally to one another.
  • the bolt 50 and the pallet 51 are free from any connection with the engagement and trigger lever 37, their tabs 53, 54 being engaged, with, longitudinally, a large clearance, either in a buttonhole or in a notch of the sole 38 of this interlocking and tripping lever 37, and their possible connection with the interlocking and tripping lever 37 being effected by means of the roller 45, as will be detailed later.
  • the cylinder head 50 is fixed with respect to the engagement and disengagement lever 37.
  • the latter is preferably, as shown, adjustable in position.
  • the cylinder head 50 is subjected to a retaining spring 58 which applies it against an adjustable stop 39, and the latter is formed by a screw which is engaged in screwing in a threaded bore 60 of the flange 40 of the interlocking and tripping lever 37 and which crosses with clearance a notch 61 provided for this purpose in the pallet 51, Figures 2, 3 and 7.
  • the retaining spring 58 of the cylinder head 50 is constituted by a pin spring which, by its median zone, bears on a boss 62 of the engagement and tripping lever 37, and which, by one of its wings , relates to the cylinder head 50.
  • this same spring 58 bears on the pallet 51, FIG. 7, and constitutes for the latter a biasing spring urging this pallet 51 in the direction of a determined position, specified below.
  • the biasing spring of this pallet 51 is in one piece with the cylinder head retaining spring 50.
  • the pallet 51 carries transversely, beyond the latching and tripping lever, a screw 63, the barrel 64 of which is engaged in screwing in an insulating sleeve 6 5 itself force-fitted in a passage 66 of the pallet 51, and the head 68 of which is disposed beyond the bimetallic strip 26 vis-à-vis the pallet 51 and is interposed on the deformation path of this bimetallic strip 26 when the latter is the 'subject to heating.
  • the sleeve-65 avoids any short-circuit and also serves as a brake for the screw 63, whose screwing or unscrewing allows the adjustment of the thermal tripping threshold.
  • the cylinder head 50 comprises an oblique ramp 70. formed by means of a notch 71 of this cylinder head, this ramp 70 being disposed on the side of this notch 71 furthest from the movable contact 20B.
  • the pallet 51 has a notch 72 in which it spans game with the roller 4 of 5, but none of the flanks or sides of this recess is intended to cooperate with the latter.
  • the housing 10 also contains a latching mechanism, which is established between the latching and tripping lever 37 and the movable contact 20B, and which comprises two latching members capable of engaging disengageably, one with the other to maintain this movable contact 20 B in the latching position.
  • a latching mechanism which is established between the latching and tripping lever 37 and the movable contact 20B, and which comprises two latching members capable of engaging disengageably, one with the other to maintain this movable contact 20 B in the latching position.
  • one of these attachment members forms an integral part of the opening spring 29 of the movable contact 20B.
  • the other hooking member is constituted by a lug 7 4 which is carried transversely projecting from the pallet 51, at the end of a lug 69 already carrying the screw 63.
  • This lug is in practice formed by a small needle of hard and smooth steel forcibly engaged in a passage 75 of the tab 69 in question.
  • the free end branch 32 of the opening spring 29 is, at its free end, engaged in a guide groove 76.
  • this guide groove is formed in the engagement and trigger handle 37, on the underside of the cover 39 thereof.
  • this end-free branch 32 forming an attachment member is well determined, and it is through this that the determined position of the pallet 51 is defined in the direction of which this pallet 51 is permanently biased by spring 58.
  • the housing 10 comprises, in line with the fixed and mobile contacts 20A, 20B, an arc extinguishing chamber 79; usually, it is equipped with a plurality of deionization plates 80, one of the end plates forming an arc horn 81A and is in connection with the metal strip 1 8 A of the connection terminal 16A, while that the other of said end plates forms an arc horn 81B and is in continuity with the flange 24 in which is engaged the support axis 23 of the movable contact 20B.
  • this arc extinguishing chamber 79 are particularly large, this essentially occupying the internal volume of the housing 10.
  • the end branch forming an attachment member 32 of the opening spring 29 of the movable contact 20B is engaged with the lug 74 of the pallet 51, the roller 45 of g e verrouilla- mechanism is engaged in the notch 47 of the housing 10, the cylinder head 50 covers the roll 45 by the inclined ramp 70 of the notch 71, and, together, the engagement and release lever 37 also carries on this roller 45 by its shoulder 48, FIGS. 1 to 9.
  • the roller 45 is then subjected to a double stress, one due to the cylinder head 50, the other due to the engagement and trigger lever 37.
  • the opening spring 29 acts on the pallet 51, according to the arrow F of FIG. 2, and, by the pins 55, this acts, in the same direction, on the cylinder head 50.
  • This cylinder head 50 being in contact with the roller 45 by its inclined ramp 70, this results, at this level, in the application to the roller 45 of a force F1 of horizontal component F 'l and of vertical component F "1, FIG. 9 .
  • this resultant R 1 is located below the edge A of this locking notch 47 against which the roller 45 rests.
  • the opening spring 29 assumes, in addition to the attachment and the locking described above, a double function: on the one hand, urging by its cross-member 35 the movable contact 20B according to arrow F4 in FIG. 2, it maintains this movable contact 20B against the fixed contact 20A, with all the necessary contact pressure, and on the other hand, it jointly maintains the movable contact 20 B in contact with its support pin 23, for good electrical contact between these two members .
  • the roller 45 is therefore no longer held in the locking notch 47: by displacement along the inclined ramp 70 of the cylinder head 50, it escapes this locking notch 47 and releases the movable assembly formed jointly by the engagement and release lever 37, the cylinder head 50 and the pallet 51, and therefore the opening spring 29.
  • the return to the latching position is done by moving the latching and tripping lever 37 in the opposite direction, according to arrow F5 in FIG. 11.
  • the engagement and trigger lever 37 indeed drives the roller 45, which in turn drives the cylinder head 50, and therefore the pallet 51, the latter being engaged with the cylinder head 50 by its pins 55.
  • the movable contact 20B has come into contact with the fixed contact 20A before the roller 45 enters the locking notch 47.
  • the opening spring 29 still assumes a double function, of penetration and contact pressure.
  • the latter which is engaged with the cylinder head 50 by its pins 55, therefore pivots about a pivot axis which extends substantially perpendicular to the axis of the central torsion part 34 of the opening spring 29 .
  • this opening spring 29 causes without delay or delay the starting of the movable contact 20B in the direction of its tripping position, FIG. 12.
  • the return spring 42 associated with the interlocking and triggering lever 37 which is then the only one acting on it, causes the unlocking of the mobile assembly in the constitution of which it participates, the roller 45 not being more subject to the sole force F2 resulting from this return spring and this compelling it to escape the locking notch 47.
  • the spring 58 brings the pallet 51 back to its determined rest position, for which it bears against the free end branch 32 of the opening spring 29.
  • the circuit breaker can therefore be reset, using the engagement and tripping lever 37, according to the process described above.
  • the opening spring 29, which previously ensured the attachment has the function of developing the opening force necessary for the passage of the movable contact 20B from its latching position to its position of trigger.
  • the adjustment of the threshold, or magnetic trigger current, in which this magnetic trigger intervenes is done by action on the screw 59 which determines the position of the yoke 50 of the magnetic trigger member corresponding.
  • the adjustment of the circuit breaker rating is therefore done by simply varying the air gap of its magnetic trip member, which allows with the same parts, very simply to produce a full range of circuit breakers of different ratings, in a range which can easily extend, for example from 10 to 40 amps.
  • the bimetallic strip 26 causes the breaking of the attachment previously assured between the lug 7 4 of this pallet 51 and the free end branch 32 of the opening spring 29, and therefore, according to the process described above, the transition to the tripping position of the assembly.
  • the setting of the threshold value, or thermal trip current. corresponding, is carried out by acting on the screw 64, to allow the variation of desirable distances between the head 68 of this screw and the bimetallic strip 26.
  • circuit breaker concerned has been assumed to be monopolar.
  • circuit breakers can be associated with each other, for the constitution of poles of a multipole assembly.
  • Each of the poles of the multipole circuit breaker thus formed is similar to that described above.
  • each of these poles further comprises, longitudinally, a zipper 99, and, on the other hand, transversely, it is associated with them,.
  • a common slide 100 As a whole, a common slide 100.
  • the pull tab 99 has two shoulders 101, 102 by which it frames the free end branch 32, forming a member for hooking the opening spring 29, and, at its other end, it carries a lug 103.
  • the slider 100 which extends transversely from poles to poles by crossing the housings 10 thereof by means of windows 105 provided for this purpose therein, has, for each of these poles, on two opposite edges, two inclined ramps, one, 106, for action of the lug 103 of the corresponding pull tab 99, the other, 107, for action on the pallet 51 of this pole.
  • the slide 100 then acts on the pallets 51 of the set of poles and therefore causes the tripping of those which are still in the latching position.
  • each opening spring 29 causes, by its free end branch 32, which comes to bear on the shoulder 101 of the corresponding pull tab 99, the return to its initial position, and the pallets 51 also cause, by action on the inclined ramps 107 of the slide 100, the return to the initial position of this one.
  • the bimetallic strip constitutes the conductor passing through the electromagnetic tripping member
  • another conductor may be substituted for it, in particular when several passages of such a conductor are necessary.
  • this bimetallic strip constituting directly by itself the conductor of the thermal trip member subjected to heating, it may be substituted for it a calibrated conductor indirectly heating such a bimetallic strip.
  • the opening spring advantageously ensures by itself, as will have been noted, a multiplicity of functions, and, in particular, by its elastic branch of bending, the elastic return of the member d 'hooking that constitutes this branch, and the opening of the movable contact.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)

Abstract

1. A circuit breaker of the type comprising, in a housing (10), a first contact (20A) which is fixed, a second contact (20B) which is mounted movably between a closed position and a tripped position and which is urged towards said tripped position by an opening spring (29), a closing and tripping actuating member (37) which is mounted movably between a closing position and a tripping position and which is urged towards said tripping position by a return spring (42), a locking mechanism (43) which is disposed between the opening and tripping actuating member (37) and the housing (10) and which is capable of releasably holding said closing and tripping actuating member (37) in the closing position, a latching mechanism which is disposed between the closing and tripping actuating member (37) and the movable contact (20B) and which comprises two latching members (32, 74) capable of releasably engaging with each other to hold the movable contact (20B) in the closed position, and at least one tripping member which is capable of causing disengagement from each other of said latching members (32, 74) whereby the movable contact (20B) is freed to move from its closed position to its tripped position, characterized in that one (32) of the latching members of the latching mechanism is an integral part of the opening spring (29) of the movable contact (20B).

Description

La présente invention concerne d'une manière générale les iisjoncteurs, qu'il s'agisse d'un simple disjoncteur monopoLaire, ou qu'il s'agisse d'un des pôles d'un disjoncteur multipolaire.The present invention relates generally to the circuit breakers, whether it is a simple monopolar circuit breaker, or whether it is one of the poles of a multipolar circuit breaker.

D'une manière générale,un tel disjoncteur comporte, dans un boîtier, un premier contact, qui est fixe, un deuxième contact, qui est monté mobile entre une position d'enclenchement et une position de déclenchement, et qui est sollicité en direction de cette dernière par un ressort d'ouverture, une manette d'enclenchement et de déclenchement, qui est montée mobile entre une position d'enclenchement et une position de déclenchement, et qui est sollicitée en direction de cette position de déclenchement par un ressort de rappel, un mécanisme de verrouillage, qui est établi entre la manette d'enclenchement et de déclenchement et le boîtier, et qui est propre à maintenir de manière débrayable en position d'enclenchement ladite manette d'enclenchement et de déclenchement, un mécanisme d'accrochage, qui est établi entre la manette d'enclenchement et de déclenchement et le contact mobile, et qui comporte deux organes d'accrochage susceptibles de venir en prise de manière débrayable l'un avec l'autre pour maintien du contact mobile en position d'enclenchement, et au moins un organe de déclenchement, magnétique et /ou thermique.In general, such a circuit breaker comprises, in a housing, a first contact, which is fixed, a second contact, which is movably mounted between a latching position and a tripping position, and which is biased towards the latter by an opening spring, an engagement and trigger handle, which is movably mounted between an engagement position and a trigger position, and which is biased towards this trigger position by a return spring , a locking mechanism, which is established between the engagement and trigger handle and the housing, and which is capable of disengageably holding said engagement and trigger handle in the engagement position, a hooking mechanism , which is established between the latching and tripping lever and the movable contact, and which comprises two latching members capable of engaging disengageably one with the other for maintaining the movable contact in the latching position, and at least one triggering member, magnetic and / or thermal.

En cas de défaut, l'organe de déclenchement en cause provoque, la cassure du mécanisme d'accrochage, c'est-à-dire le dégagement, l'un par rapport à l'autre, des organes d'accrochage que comporte ce mécanisme, et il en résulte la libération du contact mobile, qui, sous la sollicitation de son ressort d'ouverture, passe alors de sa position d'enclenchement à sa position de déclenchement.In the event of a fault, the triggering device in question causes the breakage of the latching mechanism, that is to say the release, relative to each other, of the latching members that this mechanism, and this results in the release of the movable contact, which, under the stress of its spring opening, then passes from its engagement position to its trigger position.

Usuellement, à ce jour, les organes d'accrochage au niveau desquels se fait la cassure du mécanisme d'accrochage sont constitués par des pièces spécifiques, n'ayant par elles-mêmes aucune action directe sur le-contact mobile.Usually, to date, the fastening members at which the breaking of the fastening mechanism is made up of specific parts, having by themselves no direct action on the movable contact.

C'est le cas par exemple dan.s la demande de brevet français déposée le 22 Mars 1978 sous le No 78 08263, dans laquelle l'un des organes d'accrochage est constitué par une bille, qui appartient d'ailleurs au mécanisme de verrouillage, tandis que l'autre est constitué par un cliquet sur lequel porte le ressort d'ouverture.This is the case, for example, in the French patent application filed on March 22, 1978 under No. 78 08263, in which one of the attachment members is constituted by a ball, which moreover belongs to the mechanism of locking, while the other is constituted by a pawl on which carries the opening spring.

Bien que cette disposition ait donné et donne encore satisfaction, elle implique l'intervention d'une pièce particulière, en l'espèce le cliquet, entre le mécanisme d'accrochage et le contact mobile.Although this arrangement has given and is still satisfactory, it involves the intervention of a particular part, in this case the pawl, between the latching mechanism and the movable contact.

Or, l'un des problèmes à résoudre dans la réalisation d' un disjoncteur est l'obtention, sous un volume déterminé, de hautes performances, et notamment d'un pouvoir de coupure élevé, et, pour l'obtention de hautes performances, il faut,entre autre, que l'ouverture du contact mobile puisse se faire de manière très rapide, lé-temps séparant l'apparition d'un défaut et l'ouverture complète de ce contact mobile devant en pratique être au plus de l'ordre du millième de seconde.However, one of the problems to be solved in the production of a circuit breaker is the obtaining, under a determined volume, of high performance, and in particular of a high breaking capacity, and, for obtaining high performance, requires, among other things, that the opening of the moving contact can be done very quickly, lé - time between the occurrence of a default and the full opening of the moving contact to be in practice in addition to the order of a thousandth of a second.

pour réduire au mieux ce temps d'ouverture, il est usuellement proposé de combiner à l'action simple d'ouverture décrite ci-dessus, qui implique l'intervention du mécanisme d' accrochage et du ressort d'ouverture, une action complémentaire d'arrachement, qui implique l'intervention d'un mécanisme supplémentaire d'accélération, et qui développe ses effets après ceux de l'action d'ouverture ou simultanément à ceux-ci, en utilisant dans tous les cas l'énergie même du défaut.to best reduce this opening time, it is usually proposed to combine the simple opening action described above, which involves the intervention of the latching mechanism and the opening spring, a complementary action of tearing, which involves the intervention of an additional acceleration mechanism, and which develops its effects after those of the opening action or simultaneously with these, using in all cases the very energy of the defect .

En pratique, un tel mécanisme d'accélération est usuellement formé par un circuit électromagnétique traversé par le courant à contrôler, celui-là même qui constitue par ailleurs un organe de déclenchement électromagnétique.In practice, such an acceleration mechanism is usually formed by an electromagnetic circuit traversed by the current to be controlled, the same one which moreover constitutes an electromagnetic triggering member.

Bien que cette disposition ait donné et donne encore elle aussi satisfaction, elle présente des inconvénients, et notamment celui d'augmenter le nombre de pièces à mettre en oeuvre, et, conjointement, la masse globale à déplacer.Although this provision has given and still gives it Also satisfactory, it has drawbacks, and in particular that of increasing the number of parts to be used, and, jointly, the overall mass to be moved.

En outre, elle impose, pour la réalisation du circuit électromagnétique, la mise en oeuvre d'une bobine, avec les soudures que cela implique, même quand une telle bobine ne serait pas strictement nécessaire par ailleurs pour la constitution de l'organe de déclenchement magnétique.In addition, it requires, for the realization of the electromagnetic circuit, the implementation of a coil, with the welds that this implies, even when such a coil would not otherwise be strictly necessary for the constitution of the triggering member. magnetic.

La présente invention a d'une manière générale pour objet une disposition permettant, à performances égales, voire supérieures, de s'affranchir si désiré de la mise en oeuvre d'un mécanisme d'accélération, et présentant en outre d'autres avantages.The present invention generally relates to a provision allowing, at equal or even higher performance, to overcome if desired the implementation of an acceleration mechanism, and also having other advantages.

De manière plus précise, elle a pour objet un disjoncteur du genre mentionné ci-dessus et caractérisé en ce que l'un des organes d'accrochage de son mécanisme d'accrochage fait partie intégrante du ressort d'ouverture du contact mobile.More specifically, it relates to a circuit breaker of the kind mentioned above and characterized in that one of the attachment members of its attachment mechanism is an integral part of the opening spring of the movable contact.

Suivant une forme préférée de réalisation, ce ressort d' ouverture est un ressort de torsion, dont une des branches d' extrémité est en prise avec une butée fixe solidaire du boîtier, et qui constitue un organe d'accrochage par l'autre de ses branches d'extrémité.According to a preferred embodiment, this opening spring is a torsion spring, one of the end branches of which is engaged with a fixed stop fixed to the housing, and which constitutes a fastening member by the other of its end branches.

Quoi qu'il en soit, suivant l'invention, l'un des organes d'accrochage est constitué par une pièce, à savoir le ressort d'ouverture, apte par elle-même à agir directement sur le contact mobile, sans autre intermédiaire.Anyway, according to the invention, one of the attachment members is constituted by a part, namely the opening spring, capable by itself of acting directly on the movable contact, without other intermediary .

Il en résulte un double avantage.This results in a double advantage.

Tout d'abord, par suppression du temps mort dû à un quelconque intermédiaire, cliquet ou autre, nécessaire pour compenser les inévitables tolérances de fabrication et/ou de montage de celui-ci, le temps d'ouverture du contact mobible se trouve avantageusement réduit ; dès que la cassure du mécanisme d'accrochage est intervenue et que la branche d'extrémité formant organe d'accrochage du ressort d'ouverture du contact mobile est ainsi libérée, ce ressort d'ouverture provoque immédiatement le démarrage du contact mobile, sans un quelconque rattrapage.First of all, by eliminating the dead time due to any intermediary, ratchet or other, necessary to compensate for the inevitable manufacturing and / or mounting tolerances thereof, the opening time of the movable contact is advantageously reduced ; as soon as the latching mechanism has broken and the end branch forming the latching member of the opening spring of the movable contact is thus released, this opening spring immediately causes the starting of the movable contact, without a any catch-up.

La masse de cette branche d'extrémité formant organe d'accrochage, et donc son moment d'inertie, sont tellement réduits, qu'ils n'interviennent pratiquement pas dans le déplacement du contact mobile et qu'ils n'introduisent donc aucun retard à l' amorce de celui-ci.The mass of this end branch forming a hooking member, and therefore its moment of inertia, are so reduced that they practically do not intervene in the movement of the movable contact and that they therefore introduce no delay. at the start of it.

L'examen photographique par caméra ultra-rapide du processus de déclenchement montre d'ailleurs que la flexion dont est l'objet en position d'enclenchement cette branche d'extrémité formant organe d'accrochage du ressort d'ouverture, pour assurer notamment la pression de contact correspondante, n'est récupérée, cette branche d'extrémité revenant alors à sa configuration initiale rectiligne de repos, qu'après que le contact mobile soit passé en position de déclenchement, et en tout cas qu'après que l'arc qui a pris naissance au déclenchement entre ce contact mobile et le contact fixe ait quitté le contact mobile.Photographic examination by ultra-fast camera of the triggering process also shows that the bending of which is the object in the engagement position, this end branch forming a hooking member for the opening spring, in particular to ensure the corresponding contact pressure, is recovered, this end branch then returning to its initial rectilinear configuration of rest, only after the movable contact has passed into the tripping position, and in any case only after the arc which started when the moving contact was triggered and the fixed contact left the moving contact.

Il est à souligner que ce premier avantage de temps de réponse court se conserve malgré l'usure inévitable du contact mobile, la branche d'extrémité formant organe d'accrochage du ressort d'ouverture.assurant automatiquement un rattrapage de cette usure, au prix d'une perte minime pour la pression de contact correspondante.It should be emphasized that this first advantage of short response time is preserved despite the inevitable wear of the movable contact, the end branch forming a hooking member for the opening spring. Automatically ensuring that this wear is caught up, at the price a minimal loss for the corresponding contact pressure.

Mais la suppression de tout organe-intermédiaire entre le mécanisme d'accrochage et le contact mobile a un autre avantage, qui est, les conditions étant égales par ailleurs, une réduction du nombre de pièces mises en oeuvre.But the elimination of any intermediate member between the latching mechanism and the movable contact has another advantage, which is, the conditions being equal, a reduction in the number of parts used.

Outre l'économie, non négligeable; de fabrication et de montage qui en résulte, les performances du disjoncteur s'en trouvent encore améliorées, et ceci pour la double raison suivante.Besides the economy, not negligible; manufacturing and mounting which results, the performance of the circuit breaker is further improved, for the following two reasons.

Tout d'abord, la masse globale des pièces à mettre en mouvement lors d'un déclenchement se trouvant réduite, la vitesse de déplacement de cette masse, à énergie égale, se trouve augmentée, et donc, réduit en conséquence le temps d'ouverture du contact mobile.First of all, the overall mass of the parts to be moved when triggered is reduced, the speed of movement of this mass, at equal energy, is increased, and therefore, reduces the opening time accordingly of the mobile contact.

En outre, les conditions étant égales par ailleurs, de la place se trouve avantageusement libérée, qui est mise à profit pour augmenter l'importance donnée à la chambre d'extinction d'arc usuellement disposée au droit des contacts pour absorption de l'arc prenant naissance entre ceux-ci au déclenchement, et, ainsi qu'on le sait, le pouvoir de coupure dépend, notamment, des dimensions de cette chambre .In addition, the conditions being equal, space is advantageously freed up, which is set aside. profit to increase the importance given to the arc extinguishing chamber usually arranged at the contact points for absorption of the arc arising between them on tripping, and, as is known, the breaking capacity depends, in particular, on the dimensions of this room.

Ainsi donc, suivant l'invention, l'élimination de temps morts au déclenchement, la diminution des masses à mettre en mouvement lors d'un tel déclenchement, et l'augmentation des dimensions de la chambre d'extinction d'arc, résultant de la disposition décrite ci-dessus, ainsi que d'autres qui seront explicitées en détail ultérieurement, telle que la mise en oeuvre d'un contact mobile relativement petit, la suppression,pour la desserte de ce contact mobile, de toute tresse susceptible d'en entraver le mouvement, et la mise en oeuvre, pour la constitution du ressort d'ouverture, d'un ressort de torsion,dont la partie médiane de torsion, cqui s'étend transversalement,sous un encombrement minimal, est avantageusement concentrée autour de l'axe de pivotement du contact mobile, se conjuguent pour l'obtention de hautes performances, et, notamment, d'un pouvoir de coupure élevée.Thus, according to the invention, the elimination of dead times on triggering, the reduction of the masses to be set in motion during such a triggering, and the increase in the dimensions of the arc extinguishing chamber, resulting from the arrangement described above, as well as others which will be explained in detail later, such as the implementation of a relatively small mobile contact, the removal, for the service of this mobile contact, of any braid capable of hamper the movement, and the implementation, for the constitution of the opening spring, of a torsion spring, the median torsion part of which extends transversely, with minimal bulk, is advantageously concentrated around the pivoting axis of the movable contact, combine to obtain high performance, and, in particular, a high breaking capacity.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs 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 élévation-coupe, avec arrachements locaux, d'un disjoncteur suivant l'invention, dont une partie du boîtier a été supposée retirée ;
  • la figure 2 reprend, à échelle supérieure, le détail de ce disjoncteur repéré par un encart II sur la figure 1, pour la position d'enclenchement de l'ensemble ;
  • les figures 3, 4, 5, 6 et 7 en sont des vues partielles en coupe, suivant respectivement les lignes, rectilignes ou brisées III-III, IV-IV, V-V, VI-VI et VII-VII de la figure 2 :
  • la figure 8 en est, à échelle supérieure, une autre vue partielle en coupe suivant la ligne VIII-VIII de la figure 2;
  • la figure 9 reprend, à échelle supérieure, le détail de la figure 2 repéré par un encart IX sur celle-ci, et illustre le verrouillage de la manette d'enclencenient et de déclenchement que comporte le disjoncteur suivant l'invention ;
  • la figure 10 est une vue analogue à celle de la figure 9 et illustre un déverrouillage ;
  • les figures 11 et 12 reprennent chacune pour partie la figure 1 et se rapportent chacune respectivement à diverses phases possibles de fonctionnement du disjoncteur suivant l'invention ;
  • la figure 13 est une vue schématique reprenant également pour partie la figure 1 et se rapportant à l'adaptation du disjoncteur suivant l'invention à la constitution d'un pôle de disjoncteur multipolaire ;
  • la figure 14 est une vue transversale en coupe schématique, suivant la ligne XIV-XIV de la figure 13, illustrant un tel disjoncteur multipolaire.
The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • Figure 1 is an elevational sectional view, with parts cut away, of a circuit breaker according to the invention, from which a part of the housing has been assumed to be removed;
  • Figure 2 shows, on a larger scale, the detail of this circuit breaker identified by an insert II in Figure 1, for the latching position of the assembly;
  • FIGS. 3, 4, 5, 6 and 7 are partial sectional views thereof, respectively following the straight or broken lines III-III, IV-IV, VV, VI-VI and VII-VII of FIG. 2:
  • Figure 8 is, on a larger scale, another partial view in section along the line VIII-VIII of Figure 2;
  • Figure 9 shows, on a larger scale, the detail of Figure 2 identified by an insert IX thereon, and illustrates the locking of the trigger and trigger lever ment that includes the circuit breaker according to the invention;
  • Figure 10 is a view similar to that of Figure 9 and illustrates an unlocking;
  • Figures 11 and 12 each partially repeat Figure 1 and each relate respectively to various possible phases of operation of the circuit breaker according to the invention;
  • Figure 13 is a schematic view also partly showing Figure 1 and relating to the adaptation of the circuit breaker according to the invention to the constitution of a multipole circuit breaker pole;
  • Figure 14 is a schematic cross-sectional view, along the line XIV-XIV of Figure 13, illustrating such a multipole circuit breaker.

Ces figures illustrent l'application de l'invention à la réalisation d'un disjoncteur de type modulaire, se présentant sous la forme d'une plaquette ayant en élévation une configuration en oméga.These figures illustrate the application of the invention to the production of a modular type circuit breaker, in the form of a plate having in elevation an omega configuration.

Un tel disjoncteur comporte d'une manière générale un bottier 10.Such a circuit breaker generally comprises a case 10.

Dans l'exemple de réalisationreprésenté, ce boîtier est formé de deux coquilles 11,11' d'importances inégales qui sont convenablement affrontées l'une à l'autre, et qui sont convenablement liées l'une à l'autre par des vis ou rivets mis en place à la faveur de.passages 12.In the embodiment shown, this box is formed of two shells 11, 11 ′ of unequal importance which are suitably faced with one another, and which are suitably connected to each other by screws or rivets in place thanks to.passages 12.

Sur les figures 1, 2, 11 et 12; seule est visible à la coquille 11, la coquille 11' étant supposée enlevée.In Figures 1, 2, 11 and 12; only is visible to the shell 11, the shell 11 'being assumed to be removed.

Dans l'exemple de réalisation représenté, le bottier 10 forme, à sa partie inférieure, une semelle de fixation 13 adaptée, en coopération avec une griffe élastique 14, à en permettre la fixation sur un rail du type dit en chapeau 15, telque schématisé en traits interrompus à la figure 1.In the exemplary embodiment shown, the shoemaker 10 forms, at its lower part, a fixing sole 13 adapted, in cooperation with an elastic claw 14, to allow attachment thereof to a rail of the type known as a hat 15, as shown schematically in broken lines in Figure 1.

Ces dispositions étant bien connues par elles-mêmes, et ne faisant pas partie de la présente invention, elles ne seront pas décrites plus en détail ici.These arrangements being well known in themselves, and not forming part of the present invention, they will not be described in more detail here.

Le boîtier 10 contient latéralement deux bornes de connexion 16A,16B, qui sont accessibles de l'extérieur.The housing 10 laterally contains two connection terminals 16A, 16B, which are accessible from the outside.

De manière connue en soi, chacune de ces bornes de connexion est constituée d'un étrier 17A,17B, engagé à coulissement sur une bande métallique 18A,18B, et d'une vis 19A,19B, engagée à vissage sur ledit étrier.In a manner known per se, each of these connection terminals consists of a bracket 17A, 17B, engaged in sliding on a metal strip 18A, 18B, and a screw 19A, 19 B , engaged in screwing on said bracket.

Intérieurement, le boîtier 10 contient un premier contact 20A, qui est fixe, et qui,dans l'exemple de réalisation représenté, est formé par un prolongement de la bande métallique 18A de la borne de connexion 16A, ce prolongement portant localement à cet effet une pastille de contact 21, et, en regard 3e celle-ci, un deuxième contact 20B, qui est monté mobile entre une position d'enclenchement, figures 1 et 2, pour laquelle il est en appui contre le contact fixe 20A, et une position de déclenchement, figures 11 et 12, pour laquelle il est à distance du contact fixe 20A.Internally, the housing 10 contains a first contact 20A, which is fixed, and which, in the embodiment shown, is formed by an extension of the metal strip 1 8 A of the connection terminal 16A, this extension locally carrying this effect a contact pad 21, and, in relation to the latter, a second contact 20B, which is mounted movably between an engagement position, FIGS. 1 and 2, for which it is in abutment against the fixed contact 20A, and a tripping position, FIGS. 11 and 12, for which it is remote from the fixed contact 20A.

Ainsi qu'on le notera, le contact mobile 20B est de dimensions relativement réduites.As will be noted, the movable contact 20 B is of relatively small dimensions.

En pratique, dans l'exemple de réalisation représenté, le contact mobile 20B est monté rotatif sur un axe de support 23, qui s'étend transversalement dans le boîtier 10, et qui, suivant un aspect de l'invention, est conducteur, pour liaison électrique entre ce contact mobile 20B et la borne de connexion 16B correspondante.In practice, in the illustrated embodiment, the movable contact 20B is rotatably mounted on a support pin 23, which extends transversely in the housing 10, and which, according to one aspect of the invention, is conductive, for electrical connection between this movable contact 20B and the corresponding connection terminal 16B.

A l'une de ses extrémités, cet axe de support 23 est engagé dans un flasque de maintien 24, et, à l'autre de ses extrémités, il est en continuité avec une potence coudée 25, l' ensemble étant formé à partir dun tronçon de fil rond convenablement plié.At one of its ends, this support pin 23 is engaged in a retaining flange 24, and, at the other of its ends, it is in continuity with a bent bracket 25, the assembly being formed from a section of round wire suitably bent.

Sur l'extrémité de la potence 25 se trouve fixée, par exemple par soudage, l'une des extrémités d'un bilame 26, qui s'étend longitudinalement dans le boîtier 10, d'une des bornes de connexion 16A,16B à l'autre, et qui, à son autre extrémité, est fixé, par exemple par soudure, à une aile 27, repliée en équerre à cet effet, de la bande métallique 18B de la borne de connexion 16B.On the end of the bracket 25 is fixed, for example by welding, to one end of a bimetallic strip 2 6 which extends longitudinally in the housing 10, one of the connection terminals 16A, 16B to the other, and which, at its other end, is fixed, for example by welding, to a wing 27, folded square for this purpose, of the metal strip 18B of the connection terminal 16B.

Ainsi, la liaison électrique entre cette borne de connexion et le contact mobile 20B se fait successivement à travers la bande métallique 18B, le bilame 26, et le tronçon de fil rond constituant la potence 25 et l'axe de support 23,sans aucune tresse susceptible d'entraver le mouvement de ce contact mobile 20B.Thus, the electrical connection between this connection terminal and the movable contact 20B is made successively through the metal strip 1 8B , the bimetallic strip 2 6 , and the section of round wire constituting the bracket 25 and the support axis 23, without any braid capable of hampering the movement of this movable contact 20B.

En outre, ainsi qu'on le notera, le bilame-26, qui forme un organe de déclenchement thermique, est fixé à chacune de ses extrémités, à la manière d'une poutre encastrée.In addition, as will be noted, the bimetal-2 6 , which forms a thermal trigger member, is fixed at each of its ends, in the manner of a recessed beam.

Le contact mobile 20B est sollicité en direction de sa position de-déclenchement par un ressort d'ouverture 29.The movable contact 20B is biased towards its tripping position by an opening spring 29.

Celui-ci est un ressort de torsion, dont une branche d' extrémité 30 est en prise avec une butée fixe 31 formée par une patte du flasque 24, et dont l'autre branche d'extrémité 32, qui est légèrement coudée, et dont le rôle apparaîtra ci-après, est libre.This is a torsion spring, one end branch 30 of which is engaged with a fixed stop 31 formed by a tab of the flange 24, and the other end branch 32 of which is slightly bent, and whose the role will appear below, is free.

La partie médiane de torsion 33 du ressort d'ouverture 29 s'étend-globalement autour de l'axe de support 23 du con.- tact mobile 20B, ët la masse de ce ressort 29 se trouve ainsi pour l'essentiel concentrée au voisinage de cet axe de support.The central torsional part 33 of the opening spring 29 extends generally around the support axis 23 of the movable contact 20B, and the mass of this spring 29 is thus essentially concentrated in the vicinity of this support axis.

--En pratique, dans l'exemple de réalisation représenté,la partie médiane de torsion 33 du ressort d'ouverture 29 est fractionnée-en deux portion.s, à savoir une première portion 34, qui est la plus importante, et qui s'étend d'un premier côté du contact mobile 20B, en continuité avec la branche d' extrémité fixe 30 de ce ressort d'ouverture 29, et une deuxième portion 34', qui est la moins importante, et qui s'étend de l'autre côté du contact mobile 20B, en. continuité avec la branche d'extrémité libre 32 dudit ressort d'ouverture 29.--In practice, in the embodiment shown, the middle torsion 33 of the opening spring 29 is split-into two portions.s, namely a first portion 34, which is the largest, and which s 'extends from a first side of the movable contact 20B, in continuity with the fixed end branch 30 of this opening spring 29, and a second portion 34', which is the least important, and which extends from the 'other side of the movable contact 20B, in. continuity with the free end branch 32 of said opening spring 29.

Ces deux portions 34,34' sont reliées en continuité l'une avec l'autre par un.e traverse 35 qui est engagée transversalement dans une encoche 36 du contact mobile 20B, et qui, portant sur l'un et l'autre des flancs de cette encoche 36, est susceptible d'agir sur le contact mobile 20B pour l'un et 1' autre des sens de rotation de celui-ci.These two portions 34, 34 ′ are connected in continuity with each other by a cross member 35 which is engaged transversely in a notch 36 of the movable contact 20 B , and which, bearing on one and the other the sides of this notch 36 is capable of acting on the movable contact 20B for one and the other of the directions of rotation thereof.

En pratique, la deuxième portion 34' de la partie médiane de torsion 33 du ressort d'ouverture 29, celle qui est en continuité avec la branche d'extrémité libre 32 de ce ressort, se réduit à une fraction de spire, une moitié de spire par exemple, tel que représenté.In practice, the second portion 34 'of the central torsion part 33 of the opening spring 29, that which is in continuity with the free end branch 32 of this spring, is reduced to a fraction of a turn, half of turns for example, as shown.

Le boîtier 10 contient encore une manette d'enclenchement et de déclenchement 37 qui y est montée mobile entre une position d'enclendnement,figures 1 et 2, et une position de déclenchement, figure 11.The housing 10 also contains an interlocking and tripping lever 37 which is mounted therein movable between a latching position, FIGS. 1 and 2, and a tripping position, FIG. 11.

Dans l'exemple de réalisation représenté, cette manette d'enclenchement et de déclenchement 37 forme un coulisseau à déplacement linéaire, qui est monté mobile longitudinalement dans le boîtier 10, d'une des bornes de connexion l6A,l6B à l'autre.In the embodiment shown, this interlocking and triggering lever 37 forms a slide with linear displacement, which is mounted movable longitudinally in the housing 10, from one of the connection terminals 16A, 16B to the other.

Ce coulisseau, qui est creux, et forme globalement un caisson ouvert latéralement et à chacune de ses extrémités, est engagé sur le bilame 26, à distance de celui-ci.This slide, which is hollow, and generally forms a box open laterally and at each of its ends, is engaged on the bimetallic strip 26, at a distance from the latter.

Il comporte une semelle 38 et un couvercle 39, qui s'étendent parallèlement l'un à l'autre, et qui sont reliés l'un à l'autre par un flasque latéral 40.It has a sole 38 and a cover 39, which extend parallel to one another, and which are connected to each other by a lateral flange 40.

En surface, le couvercle 39 porte une saillie de préhension 41, qui est accessible de l'extérieur du boîtier 10, à la faveur d'un passage 44 prévu à cet effet dans celui-ci.On the surface, the cover 39 carries a gripping projection 41, which is accessible from the outside of the housing 10, through a passage 44 provided for this purpose therein.

La manette d'enclenchement et de déclenchement 37 ainsi constituée est sollicitée en direction de sa position de déclenchement par un ressort de rappel 42 ; il s'agit, dans l' exemple de réalisation représenté, d'un ressort de torsion, dont les branches qui sont symétriques l'une de l'autre, sont chacune respectivement en prise, l'une avec la bande métallique 18B de la borne de connexion 16B, à la faveur d'un perçage de celle-ci, l'autre avec la manette d'enclenchement et de déclenchement 37, également à la faveur d'un perçage de celle-ci, figure 7, et dont la mise en place peut ainsi être aisément assurée, soit manuellement, soit automatiquement.The engagement and trigger lever 37 thus formed is biased towards its trigger position by a return spring 42; it is, in the embodiment shown, a torsion spring, the branches of which are symmetrical to each other, are each respectively in engagement, one with the metal strip 18 B of the connection terminal 16B, by virtue of a drilling thereof, the other with the engagement and tripping lever 37, also by virtue of a drilling thereof, FIG. 7, and of which installation can thus be easily ensured, either manually or automatically.

A cette manette d'enclenchement et de déclenchement 37 est associé un mécanisme de verrouillage 43, qui est établi entre elle et le boîtier 10, et qui est propre à la maintenir de manière débrayable en position d'enclenchement.With this interlocking and tripping lever 37 is associated a locking mechanism 43, which is established between it and the housing 10, and which is capable of holding it disengageably in the engaged position.

Dans l'exemple de réalisation représenté, ce mécanisme de verrouillage 43 comporte un organe de roulement libre 45, qui est constitué d'un simple rouleau s'étendant transversalement dans le boîtier 10, et qui est propre à coopérer en verrouillage avec une encoche 47 à flancs obliques formée transversalement à la surface d'un plancher intermédiaire 46 de ce boîtier 10, solidaire, dans l'exemple de réalisation représenté, de la coquille 11' de celui-ci.In the embodiment shown, this locking mechanism 43 comprises a free rolling member 45, which consists of a single roller extending transversely in the housing 10, and which is capable of cooperating in locking with a notch 47 with oblique sides formed transversely to the surface of an intermediate floor 46 of this housing 10, integral, in the embodiment shown, with the shell 11 'thereof.

Ce rouleau 45 est disposé entre deux épaulements 48,49 de la manette d'enclenchement et de déclenchement 37, formée à la faveur d'une fente affectant la semelle 38 de celle-ci.This roller 45 is disposed between two shoulders 48, 49 of the engagement and trigger lever 37, formed by means of a slot affecting the sole 38 of the latter.

Outre l'organe de déclenchement thermique que constitue le bilame 26, le boîtier 10 contient un autre organe de déclenchement, qui est un organe de déclenchement électromagnétique, et qui, de manière usuelle, est formé d'une culasse 50 et d'une palette 51 montée pivotante vis-à-vis de cette culasse.In addition to the thermal trigger member that constitutes the bimetallic strip 26, the housing 10 contains another trigger member, which is an electromagnetic trigger member, and which, in the usual manner, is formed by a cylinder head 50 and a pallet 51 pivotally mounted with respect to this cylinder head.

Suivant un aspect de l'invention, la culasse 50 et la palette 51 sont logées à l'intérieur de la manette d'enclenchement et de déclenchement 37 et sont portées par celle-ci, en sorte que cette manette d'enclenchement et de déclenchement 37, cette culasse 50, et cette palette 51 appartiennent conjointement à un même équipage mobile.According to one aspect of the invention, the cylinder head 50 and the pallet 51 are housed inside the engagement and trigger lever 37 and are carried by the latter, so that this engagement and trigger lever 37, this cylinder head 50, and this pallet 51 belong jointly to the same mobile assembly.

La culasse 50 forme longitudinalement une gouttière, par laquelle elle est engagée sur le bilame 26, à distance de celui-ci, du côté de ce bil#me opposé au flasque 40 de la manette d'enclenchement et de déclenchement 37.The cylinder head 50 forms longitudinally a gutter, by which it is engaged on the bimetallic strip 26, at a distance from the latter, on the side of this bil # me opposite to the flange 40 of the interlocking and tripping lever 37.

Ainsi, un passage unique de conducteur à travers la culasse 50 est prévu, et le conducteur assurant ce passage est très simplement formé par le bilame 26 formant par ailleurs l'organe de déclenchement thermique.Thus, a single conductor passage through the yoke 50 is provided, and the conductor providing this passage is very simply formed by the bimetallic strip 26 also forming the thermal trigger member.

La palette 51 est disposée de l'autre côté du,bilame 26 vis-à-vis de la culasse 50, et s'étend donc entre ce bilame 26 et le flasque 40 de la manette d'enclenchement et de déclenchement 37.The pallet 51 is arranged on the other side of the bimetallic strip 26 vis-à-vis the cylinder head 50, and therefore extends between this bimetallic strip 26 and the flange 40 of the engagement and tripping lever 37.

Suivant l'invention, des moyens d'emboîtement sont prévus entre la culasse 50 et la palette 51.According to the invention, interlocking means are provided between the cylinder head 50 and the pallet 51.

A cet effet, dans l'exemple de réalisation, la culasse 50 et l'armature 51 présentent chacune, en regard l'une de l'autre, une paire de pattes 53,54, et les moyens d'emboîtement en question comportent, pour chaque couple de pattes 53, 54, un pion 55 qui est porté en saillie par l'une d'elles et qui est engagé dans une cuvette ou un perçage 56 de l'autre.To this end, in the exemplary embodiment, the cylinder head 50 and the armature 51 each have, facing each other, a pair of lugs 53, 54, and the interlocking means in question comprise, for each pair of legs 53, 54, a pin 55 which is carried projecting by one of them and which is engaged in a bowl or a hole 56 on the other.

Dans l'exemple de réalisation représenté, les pions 55 ainsi prévus sont portés en saillie par la palette 51 et sont formés par simple emboutissage locale de celle-ci ; vice-versa, ces pions 55 peuvent être formés sur la culasse 50.In the embodiment shown, the pins 55 thus provided are projecting from the pallet 51 and are formed by simple local stamping thereof; vice versa, these pins 55 can be formed on the cylinder head 50.

Les moyens d'emboîtement ainsi constitués ont une double fonction : d'une part ils assurent transversalement un montage pivotant de la palette 51 vis-à-vis de la culasse 50, perpendiculairement à l'axe de la partie médiane de torsion 33 du ressort d'ouverture 29, et d'autre part ils attellent longitudinalement l'une à l'autre cette culasse 50 et cette palette 51.The interlocking means thus formed have a double function: on the one hand they provide a pivoting mounting of the pallet 51 with respect to the cylinder head 50, perpendicular to the axis of the central torsion part 33 of the spring opening 29, and on the other hand they couple this cylinder head 50 and this pallet 51 longitudinally to one another.

Longitudinalement, la culasse 50 et la palette 51 sont libres de toute liaison avec la manette d'enclenchement et de déclenchement 37, leurs pattes 53,54 étant engagées, avec,longitudinalement, un large jeu, soit dans une boutonnière, soit dans une échancrure de la semelle 38 de cette manette d'enclenchement et de déclenchement 37, et leur liaison éventuelle avec la manette d'enclenchement et de déclenchement 37 se faisant par l'intermédiaire du rouleau 45, ainsi qu'il sera détaillé ultérieurement.Longitudinally, the bolt 50 and the pallet 51 are free from any connection with the engagement and trigger lever 37, their tabs 53, 54 being engaged, with, longitudinally, a large clearance, either in a buttonhole or in a notch of the sole 38 of this interlocking and tripping lever 37, and their possible connection with the interlocking and tripping lever 37 being effected by means of the roller 45, as will be detailed later.

Transversalement, la culasse 50 est fixe vis-à-vis de la manette d'enclenchement et de déclenchement 37.Transversally, the cylinder head 50 is fixed with respect to the engagement and disengagement lever 37.

Cependant, pour réglage de l'entrefer entre la palette 51 et la culasse 50, celle-ci est de préférence, tel que représenté, réglable en position.However, for adjusting the air gap between the pallet 51 and the cylinder head 50, the latter is preferably, as shown, adjustable in position.

En pratique, tel que représenté, la culasse 50 est soumise à un ressort de maintien 58 qui l'applique contre une butée réglable 39, et celle-ci est formée par une vis qui est engagée à vissage dans un perçage taraudé 60 du flasque 40 de la manette d'enclenchement et de déclenchement 37 et qui traverse avec jeu une échancrure 61 prévue à cet effet dans la palette 51, figures 2, 3 et 7.In practice, as shown, the cylinder head 50 is subjected to a retaining spring 58 which applies it against an adjustable stop 39, and the latter is formed by a screw which is engaged in screwing in a threaded bore 60 of the flange 40 of the interlocking and tripping lever 37 and which crosses with clearance a notch 61 provided for this purpose in the pallet 51, Figures 2, 3 and 7.

Le ressort de maintien 58 de la culasse 50 est constitué par un ressort en épingle qui, par sa zone médiane, prend appui sur un bossage 62 de la manette d'enclenchement et de déclenchement 37, et qui, par l'une de ses ailes, porte sur la culasse 50.The retaining spring 58 of the cylinder head 50 is constituted by a pin spring which, by its median zone, bears on a boss 62 of the engagement and tripping lever 37, and which, by one of its wings , relates to the cylinder head 50.

Par l'autre de ses ailes, ce même ressort 58 porte sur la palette 51, figure 7, et constitue pour celle-ci un ressort de polarisation sollicitant cette palette 51 en direction d' une position déterminée, précisée ci-après.By the other of its wings, this same spring 58 bears on the pallet 51, FIG. 7, and constitutes for the latter a biasing spring urging this pallet 51 in the direction of a determined position, specified below.

Ainsi, le ressort de polarisation de cette palette 51 est d'un seul tenant avec le ressort de maintien de la culasse 50.Thus, the biasing spring of this pallet 51 is in one piece with the cylinder head retaining spring 50.

pour intervention éventuelle du bilame 26, la palette 51 porte transversalement, au-delà de la manette d'enclenchement et de déclenchement, une vis 63, dont le fût 64 est engagé à vissage dans une douille isolante 65 elle-même emmanchée à force dans un passage 66 de la palette 51, et dont la tête 68 se trouve disposée au-delà du bilame 26 vis-à-vis de la palette 51 et est interposée sur le trajet de déformation de ce bilame 26 lorsque celui-ci est l'objet d'un échauffement.for possible intervention of the bimetallic strip 26, the pallet 51 carries transversely, beyond the latching and tripping lever, a screw 63, the barrel 64 of which is engaged in screwing in an insulating sleeve 6 5 itself force-fitted in a passage 66 of the pallet 51, and the head 68 of which is disposed beyond the bimetallic strip 26 vis-à-vis the pallet 51 and is interposed on the deformation path of this bimetallic strip 26 when the latter is the 'subject to heating.

La douille-65 évite tout court-circuit et sert également de frein pour la vis 63, dont le vissage ou le dévissage permet le réglage du seuil de déclenchement thermique.The sleeve-65 avoids any short-circuit and also serves as a brake for the screw 63, whose screwing or unscrewing allows the adjustment of the thermal tripping threshold.

pour coopération. avec le rouleau 45, la culasse 50 comporte une rampe oblique 70.formée à la faveur d'une échancrure 71 de cette culasse, cette rampe 70 étant disposée du côté de cette échancrure 71 la plus éloignée du contact mobile 20B.for cooperation. with the roller 45, the cylinder head 50 comprises an oblique ramp 70. formed by means of a notch 71 of this cylinder head, this ramp 70 being disposed on the side of this notch 71 furthest from the movable contact 20B.

De même, la palette 51 présente une échancrure 72 par laquelle elle enjambe avec jeu le rouleau 45, mais aucun des flancs ou côtés de cette échancrure n'est destiné à coopérer avec ce dernier.Similarly, the pallet 51 has a notch 72 in which it spans game with the roller 4 of 5, but none of the flanks or sides of this recess is intended to cooperate with the latter.

Le boîtier 10 contient encore un mécanisme d'accrochage, qui est établi entre la manette d'enclenchement et de déclenchement 37 et le contact mobile 20B, et qui comporte deux organes d'accrochage susceptibles de venir en prise de manière débrayable, l'un avec l'autre pour maintien de ce contact mobile 20B en position d'enclenchement.The housing 10 also contains a latching mechanism, which is established between the latching and tripping lever 37 and the movable contact 20B, and which comprises two latching members capable of engaging disengageably, one with the other to maintain this movable contact 20 B in the latching position.

Suivant l'invention, l'un de ces organes d'accrochage fait partie intégrante du ressort d'ouverture 29 du contact mobile 20B.According to the invention, one of these attachment members forms an integral part of the opening spring 29 of the movable contact 20B.

Il s'agit en pratique de la branche d'extrémité libre 32 de ce ressort d'ouverture 29.In practice, this is the free end branch 32 of this opening spring 29.

L'autre organe d'accrochage est constitué par un ergot 74 que porte transversalement en saillie la palette 51, en bout d'une patte 69 portant déjà la vis 63.The other hooking member is constituted by a lug 7 4 which is carried transversely projecting from the pallet 51, at the end of a lug 69 already carrying the screw 63.

Cet ergot est en pratique formé par une petite aiguille d acier dur et lisse engagée à force dans un passage 75 de la patte 69 en question.This lug is in practice formed by a small needle of hard and smooth steel forcibly engaged in a passage 75 of the tab 69 in question.

Quoi qu'il en soit, la branche d'extrémité libre 32 du ressort d'ouverture 29 est, à son extrémité libre, engagée dans une rainure de guidage 76.Anyway, the free end branch 32 of the opening spring 29 is, at its free end, engaged in a guide groove 76.

Dans l'exemple de réalisation représenté, cette rainure de-guidage est formée dans la manette d'enclenchement et de déclenchement 37, sur la face inférieure du couvercle 39 de celle-ci.In the embodiment shown, this guide groove is formed in the engagement and trigger handle 37, on the underside of the cover 39 thereof.

Transversalement, la position de cette branche d'extrémité-libre 32 formant organe d'accrochage est bien déterminée, et c'est à travers elle qu'est définie la position déterminée de la palette 51 en direction de laquelle cette palette 51 est en permanence sollicitée par le ressort 58.Transversally, the position of this end-free branch 32 forming an attachment member is well determined, and it is through this that the determined position of the pallet 51 is defined in the direction of which this pallet 51 is permanently biased by spring 58.

--En association avec son ergot 74, la palette 51 présente, en bout-de sa patte -76, une rampe inclinée de réarmement 78, figures 2, 7 et 8, dont le rôle apparaîtra ultérieurement. Enfin, le boîtier 10 comporte, au droit des contacts fixe et mobile 20A,20B, une chambre d'extinction d'arc 79 ; de manière usuelle, celle-ci est équipée d'une pluralité de plaques de déionisation 80, dont une des plaques extrêmes formant une corne d'arc 81A et est en liaison avec la bande métallique 18A de la borne de connexion 16A, tandis que l'autre desdites plaques extrêmes forme une corne d'arc 81B et est en continuité avec le flasque 24 dans lequel est engagé l'axe de support 23 du contact mobile 20B.- I n association with its lug 74, the pallet 51 has, at the end of its leg--76, an inclined ramp reset 78, Figures 2, 7 and 8, whose function will appear later. Finally, the housing 10 comprises, in line with the fixed and mobile contacts 20A, 20B, an arc extinguishing chamber 79; usually, it is equipped with a plurality of deionization plates 80, one of the end plates forming an arc horn 81A and is in connection with the metal strip 1 8 A of the connection terminal 16A, while that the other of said end plates forms an arc horn 81B and is in continuity with the flange 24 in which is engaged the support axis 23 of the movable contact 20B.

Ainsi qu'on le notera sur les dessins, les dimensions de cette chambre d'extinction d'arc 79 sont particulièrement importantes, celle-ci occupant pour l'essentiel le volume interne du boîtier 10.As will be noted in the drawings, the dimensions of this arc extinguishing chamber 79 are particularly large, this essentially occupying the internal volume of the housing 10.

Pour la position d'enclenchement de l'ensemble, la branche d'extrémité formant organe d'accrochage 32 du ressort d' ouverture 29 du contact mobile 20B est en prise avec l'ergot 74 de la palette 51, le rouleau 45 du mécanisme de verrouilla- ge est engagé dans l'encoche 47 du boîtier 10, la culasse 50 porte sur ce rouleau 45 par la rampe inclinée 70 de son encoche 71, et, conjointement, la manette d'enclenchement et de déclenchement 37 porte également sur ce rouleau 45 par son épaulement 48, figures 1 à 9.For the latching position of the assembly, the end branch forming an attachment member 32 of the opening spring 29 of the movable contact 20B is engaged with the lug 74 of the pallet 51, the roller 45 of g e verrouilla- mechanism is engaged in the notch 47 of the housing 10, the cylinder head 50 covers the roll 45 by the inclined ramp 70 of the notch 71, and, together, the engagement and release lever 37 also carries on this roller 45 by its shoulder 48, FIGS. 1 to 9.

Tel qu'il est illustré par la figure 9, le rouleau 45 est alors l'objet d'une double sollicitation, l'une due à la culasse 50, l'autre due à la manette d'enclenchement et de déclenchement 37.As illustrated in FIG. 9, the roller 45 is then subjected to a double stress, one due to the cylinder head 50, the other due to the engagement and trigger lever 37.

En effet, par l'ergot 74, le ressort d'ouverture 29 agit sur la palette 51, suivant la flèche F de la figure 2, et,par les pions 55, celle-ci agit, dans le même sens, sur la culasse 50.Indeed, by the lug 74, the opening spring 29 acts on the pallet 51, according to the arrow F of FIG. 2, and, by the pins 55, this acts, in the same direction, on the cylinder head 50.

Cette culasse 50 étant au contact du rouleau 45 par sa rampe inclinée 70, il en résulte, à ce niveau, l'application au rouleau 45 d'une force Fl de composante horizontale F'l et de composante verticale F"1, figure 9.This cylinder head 50 being in contact with the roller 45 by its inclined ramp 70, this results, at this level, in the application to the roller 45 of a force F1 of horizontal component F 'l and of vertical component F "1, FIG. 9 .

Conjointement, du fait de son ressort de rappel 42, la. manette d'enclenchement et de déclenchement 37 est l'objet d' une sollicitation dans le sens de la flèche F de la figure 2.Jointly, due to its return spring 42, the. engagement and release lever 37 is subjected to stress in the direction of arrow F in FIG. 2.

Cette manette d'enclenchement et de déclenchement 37 étant au contact du rouleau 45 par son épaulement 48, il en résulte, à ce niveau, l'application au rouleau 45 d'une force horizontale F2, figure 9.This interlocking and tripping lever 37 being in contact with the roller 45 by its shoulder 48, this results, at this level, in applying to the roller 45 a horizontal force F2, FIG. 9.

Supposées ramenées au centre d'une section droite du rouleau 45, les forces Fl et F2 conjuguent leurs effets en une résultante commune R1.Assumed to be brought back to the center of a cross section of the roller 45, the forces F1 and F2 combine their effects in a common result R 1 .

Le choix de la force du ressort d'ouverture 29 et du ressort de rappel 42, d'une part, et de la pente de la rampe inclinée 70 d'autre part, est tel que, pour la position d'enclenchement concernée, la résultante R pénètre dans l'encoche de verrouillage 47.The choice of the force of the opening spring 29 and of the return spring 42, on the one hand, and of the slope of the inclined ramp 70 on the other hand, is such that, for the engagement position concerned, the resulting R enters the locking notch 47.

Autrement dit, sur la figure 9, cette résultante R1 se trouve au-dessous de l'arête A de cette encoche de verrouillage 47 contre laquelle se trouve en appui le rouleau 45.In other words, in FIG. 9, this resultant R 1 is located below the edge A of this locking notch 47 against which the roller 45 rests.

Celui-ci est donc maintenu dans l'encoche de verrouillage 47, et il verrouille temporairement en position d'enclenchement d'une part la culasse 50, et, par elle, la palette 51, le ressort d'ouverture 29 et le contact mobile 20B, et d'autre part la manette d'enclenchement et de déclenchement 37.It is therefore held in the lock notch lage 47, and it temporarily locks in the latching position on the one hand the cylinder head 50, and by it the pallet 51, the opening spring 29 and the movable contact 20B, and on the other hand the lever switching on and off 37.

pour cette position d'enclenchement de l'ensemble; -le ressort d'ouverture 29 assume, outre l'accrochage et le verrouillage décrits ci-dessus, une double fonction : d'une part, sollicitant par sa traverse 35 le contact mobile 20B suivant la flèche F4 de la figure 2, il maintient ce contact mobile 20B contre le contact fixe 20A, avec toute la pression de contact nécessaire, et d'autre part, il maintient conjointement le contact mobile 20B au contact de son axe de support 23,pour un bon contact électrique entre ces deux organes.for this locking position of the assembly; the opening spring 29 assumes, in addition to the attachment and the locking described above, a double function: on the one hand, urging by its cross-member 35 the movable contact 20B according to arrow F4 in FIG. 2, it maintains this movable contact 20B against the fixed contact 20A, with all the necessary contact pressure, and on the other hand, it jointly maintains the movable contact 20 B in contact with its support pin 23, for good electrical contact between these two members .

On supposera maintenant que, par une action sur la manette d'enclenchement et de déclenchement 37 suivant la flèche F de la figure 2, le disjoncteur est commandé en déclenchement.It will now be assumed that, by an action on the switching on and off lever 37 according to arrow F in FIG. 2, the circuit breaker is commanded to trip.

Cette action se traduit par l'application à la manette d'enclenchement et de déclenchement 37 d'une force horizontale F3, qui, par l'épaulement 48 de la manette d'enclenchement et de déclenchement 37, se trouve répercutée sur le rouleau 45 et vient ajouter ses effets aux forces F'1 et F2 précédentes, figure 10.This action results in the application to the interlocking and tripping lever 37 of a horizontal force F3, which, by the shoulder 48 of the interlocking and tripping lever 37, is reflected on the roller 45 and adds its effects to the forces F'1 and F2 above, figure 10.

Il en résulte un redressement de la résultante R2 correspondante vis-à-vis de l'horizontale.This results in a straightening of the corresponding resultant R2 with respect to the horizontal.

Dès que la force F3 est suffisante, cette résultante R2 échappe à l'encoche de verrouillage 47.As soon as the force F3 is sufficient, this resultant R 2 escapes the locking notch 47.

Autrement dit, elle passe alors au-dessus de l'arête A contre laquelle se trouve en appui le rouleau 45, tel que représenté à la figure 10.In other words, it then passes over the edge A against which the roller 45 is in contact, as shown in FIG. 10.

Le rouleau 45 n'est dès lors plus maintenu dans l'encoche de verrouillage 47 : par déplacement le long de la rampe inclinée 70 de la culasse 50, il échappe à cette encoche de verrouillage 47 et libère l'équipage mobile constitué conjointement par la manette d'enclenchement et de déclenchement 37, la culasse 50 et la palette 51, et donc, le ressort d'ouverture 29.The roller 45 is therefore no longer held in the locking notch 47: by displacement along the inclined ramp 70 of the cylinder head 50, it escapes this locking notch 47 and releases the movable assembly formed jointly by the engagement and release lever 37, the cylinder head 50 and the pallet 51, and therefore the opening spring 29.

Ce ressort d'ouverture 29, d'une part, par action de sa traverse 35 sur le contact mobile 20B, suivant un sens de rotation opposé à celui indiqué par la flèche F4, provoque le passage du contact mobile 20B de sa position d'enclenchement précédente à sa position de déclenchement, figure 11, et, d' autre part, par sa branche d'extrémité libre 32, à laquelle le ressort de rappel 42 additionne ses effets, il provoque également le passage en position de déclenchement de l'équipage mobile formé par la manette d'enclenchement et de déclenchement 37, la culasse 50 et la palette 51.This opening spring 29, on the one hand, by action of its cross member 35 on the movable contact 20B, in a direction of rotation opposite to that indicated by the arrow F4, causes the movable contact 20B to pass from its previous engagement position to its tripping position, FIG. 11, and, further part, by its free end branch 32, to which the return spring 42 adds its effects, it also causes the moving equipment formed by the engagement and trigger lever 37, the cylinder head, to go into the release position 50 and the pallet 51.

Le retour en position d'enclenchement se fait en déplaçant en sens inverse la manette d'enclenchement et de déclenchement 37, suivant la flèche F5 de la figure 11.The return to the latching position is done by moving the latching and tripping lever 37 in the opposite direction, according to arrow F5 in FIG. 11.

Lors de ce déplacement, la manette d'enclenchement et de déclenchement 37 entraîne en effet le rouleau 45, qui-entraîne à son tour la culasse 50, et donc la palette 51, celle-ci étant en prise avec la culasse 50 par ses pions 55.During this movement, the engagement and trigger lever 37 indeed drives the roller 45, which in turn drives the cylinder head 50, and therefore the pallet 51, the latter being engaged with the cylinder head 50 by its pins 55.

Lors du mouvement qui en résulte ainsi pour elle, la palette 51, par l'ergot 74 qu'elle porte, assure elle-même l'entraînement de la branche d'extrémité libre 32 du ressort d'ouverture 29.During the movement which thus results for it, the pallet 51, by the lug 74 which it carries, itself drives the free end branch 32 of the opening spring 29.

Il en résultel'application au contact mobile 20B, par la traverse 35 du ressort d'ouverture 29, d'une sollicitation en rotation suivant la flèche F4 de la figure 2, en direction du contact fixe 20A.This results in the application to the movable contact 20B, via the cross-member 35 of the opening spring 29, of a stress in rotation along the arrow F4 in FIG. 2, in the direction of the fixed contact 20A.

Le mouvement de la manette d'enclenchement et de déclenchement 37 est poursuivi jusqu'à ce que le rouleau 45 arrivant au droit de l'encoche de verrouillage 47, figure 2, pénètre dans cette encoche de verrouillage 47, et y demeure bloqué, tel que décrit ci-dessus en référence à la figure 9, en assurant ainsi à nouveau le verrouillage débrayable de l'ensemble en position d'enclenchement.The movement of the engagement and release lever 37 is continued until the roller 45 arriving at the right of the locking notch 47, FIG. 2, enters this locking notch 47, and remains blocked there, as as described above with reference to Figure 9, thereby again ensuring the disengageable locking of the assembly in the engaged position.

En pratique, le contact mobile 20B est arrivé au contact du contact fixe 20A avant que le rouleau 45 ne pénètre dans l'encoche de verrouillage 47.In practice, the movable contact 20B has come into contact with the fixed contact 20A before the roller 45 enters the locking notch 47.

La dernière portion du déplacement de la manette d'enclenchement et de déclenchement 37 provoque donc une flexion de la branche d'extrémité libre 32 du ressort d'ouverture 29, conjuguée à une torsion de la portion 34' de la partie médiane de torsion 34 de ce ressort qui est en continuité avec cette branche d'extrémité libre 32.The last portion of movement of the latching lever and trigger March 7 therefore causes a bending of the free end branch 32 of the opening spring 29, combined with a torsion of the portion 34 'of the central torsion part 34 of this spring which is in continuity with this free end branch 32.

De cette flexion et de cette torsion résulte l'effort de pénétration souhaitable à l'enclenchement entre le contact mobile 20B et le contact fixe 20A.From this bending and from this torsion results the penetration force desirable for engagement between the movable contact 20B and the fixed contact 20A.

Ainsi, de ce point de vue, le ressort d'ouverture 29 assume encore une double fonction, de pénétration et de pression de contact.Thus, from this point of view, the opening spring 29 still assumes a double function, of penetration and contact pressure.

En service, lorsque le courant traversant le disjoncteur d'une de ses bornes de connexion 16A,16B à l'autre dépasse une valeur préétablie, ou courant de déclenchement magnétique, la culasse 50 attire la palette 51.In service, when the current passing through the circuit breaker from one of its connection terminals 16A, 16 B to the other exceeds a preset value, or magnetic tripping current, the cylinder head 50 attracts the pallet 51.

Celle-ci, qui est en prise avec la culasse 50 par ses pions 55, pivote dès lors autour d'un axe de pivotement qui s'étend sensiblement perpendiculairement à l'axe de la partie médiane de torsion 34 du ressort d'ouverture 29.The latter, which is engaged with the cylinder head 50 by its pins 55, therefore pivots about a pivot axis which extends substantially perpendicular to the axis of the central torsion part 34 of the opening spring 29 .

Au cours de ce pivotement, l'ergot 74, porté par la palette 51, et don.c entraîné par celle-ci, vient à échapper à la branche d'extrémité libre 32 du ressort d'ouverture 29, celle-ci ne pouvant être entraînée par cet ergot 74 puisqu' elle est en prise avec la rainure de guidage transversalement fixe 76.During this pivoting, the lug 74, carried by the pallet 51, and don.c driven by it, comes to escape the free end branch 32 of the opening spring 29, the latter being unable to be driven by this lug 74 since it is engaged with the transversely fixed guide groove 76.

Dès la libération de sa branche d'extrémité libre 32,le ressort d'ouverture 29, par sa traverse 35, et sous les effets de la portion 34 de sa partie médiane de torsion 33, applique au contact mobile 20B une sollicitation, en sens opposé à celui de la flèche F4 de la figure 2, qui conduit ce contact mobile 20B à quitter immédiatement le contact fixe 20A.As soon as its free end branch 32 is released, the opening spring 29, through its cross-member 35, and under the effects of the portion 34 of its median torsional part 33, applies a bias to the movable contact 20 B opposite direction to that of arrow F4 in Figure 2, which leads this movable contact 20B to immediately leave the fixed contact 20A.

Ainsi, suivant une caractéristique majeure de l'invention, dès la cassure de l'accrochage entre les deux organes d'accrochage que constituent, d'une part la branche d'extrémité libre 32 du ressort d'ouverture 29, et d'autre part l' ergot 74 porté par la palette 51, ce ressort d'ouverture 29 provoque sans retard ni délai le démarrage du contact mobile 20B en direction de sa position de déclenchement, figure 12.Thus, according to a major characteristic of the invention, from the break of the coupling between the two coupling members which constitute, on the one hand the free end branch 32 of the opening spring 29, and on the other apart from the lug 74 carried by the pallet 51, this opening spring 29 causes without delay or delay the starting of the movable contact 20B in the direction of its tripping position, FIG. 12.

Le ressort de rappel 42 associé à la manette d'enclenchement et de déclenchement 37, qui est alors le seul à agir sur celle-ci, provoque le déverrouillage de l'équipage mobile à la constitution duquel elle participe, le rouleau 45 n'étant plus soumis qu'à la seule force F2 résultant de ce ressort de rappel et celle-ci le contraignant à échapper à l'encoche de verrouillage 47.The return spring 42 associated with the interlocking and triggering lever 37, which is then the only one acting on it, causes the unlocking of the mobile assembly in the constitution of which it participates, the roller 45 not being more subject to the sole force F2 resulting from this return spring and this compelling it to escape the locking notch 47.

Sous la sollicitation du ressort de rappel 42, cet équipage mobile revient donc en position d'enclenchement, figure 11.Under the bias of the return spring 42, this movable assembly therefore returns to the latching position, FIG. 11.

Au cours de ce retour, la rampe inclinée 78 de la palette 51 vient à porter contact contre la branche d'extrémité libre 32 du ressort d'ouverture 29, précédemment revenue quant à elle, à sa position d'enclenchement, ce qui contraint momentanément la palette 51 à pivoter en direction de la culasse 50, à l'encontre du ressort 58, pour franchissement par l'ergot 74 de cette branche d'extrémité libre 32 du ressort d'ouverture 29.During this return, the inclined ramp 78 of the pallet 51 comes into contact against the free end branch 32 of the opening spring 29, previously returned, for its part, to its engaged position, which momentarily constrains the pallet 51 to pivot in the direction of the cylinder head 50, against the spring 58, for crossing by the lug 74 of this free end branch 32 of the opening spring 29.

Après un tel franchissement, qui permet re réarmement du disjoncteur, le ressort 58 ramène la palette 51 à sa position déterminée de repos, pour laquelle elle est en appui contre la branche d'extrémité libre 32 du ressort d'ouverture 29.After such a crossing, which allows resetting of the circuit breaker, the spring 58 brings the pallet 51 back to its determined rest position, for which it bears against the free end branch 32 of the opening spring 29.

Le disjoncteur peut dès lors être réenclenché, à l'aide de la manette d'enclenchement et de déclenchement 37, suivant le processus décrit ci-dessus.The circuit breaker can therefore be reset, using the engagement and tripping lever 37, according to the process described above.

Ainsi, lors d'un déclenchement magnétique, le ressort d' ouverture 29, qui assurait précédemment l'accrochage, a pour fonction de développer la force d'ouverture nécessaire au passage du contact mobile 20B de sa position d'enclenchement à sa position de déclenchement.Thus, during a magnetic release, the opening spring 29, which previously ensured the attachment, has the function of developing the opening force necessary for the passage of the movable contact 20B from its latching position to its position of trigger.

Ainsi qu'il est aisé de le comprendre, le réglage du seuil, ou courant de déclenchement magnétique, auquel intervient ce déclenchement magnétique, se fait par action sur la vis 59 qui détermine la position de la culasse 50 de l'organe de déclenchement magnétique correspondant.As it is easy to understand, the adjustment of the threshold, or magnetic trigger current, in which this magnetic trigger intervenes, is done by action on the screw 59 which determines the position of the yoke 50 of the magnetic trigger member corresponding.

En effet, par réglage de cette position on règle l'entrefer existant entre cette culasse 50 et la palette 51, la position de repos de cette dernière se trouvant par ailleurs déterminée par la branche d'extrémité libre 32 du ressort d' ouverture 29 et par le ressort 58,tel que décrit ci-dessus.Indeed, by adjusting this position, the air gap between this cylinder head 50 and the pallet 51 is adjusted, the rest position of the latter being also determined by the free end branch 32 of the opening spring 29 and by the spring 58, as described above.

Suivant l'invention, le réglage du calibre du disjoncteur se fait donc en variant simplement l'entrefer de son organe de déclenchement magnétique, ce qui permet avec les mêmes pièces, de réaliser très simplement une gamme complète de disjoncteurs de calibres différents, dans une gamme pouvant aisément s'étendre par exemple de 10 à 40 ampères.According to the invention, the adjustment of the circuit breaker rating is therefore done by simply varying the air gap of its magnetic trip member, which allows with the same parts, very simply to produce a full range of circuit breakers of different ratings, in a range which can easily extend, for example from 10 to 40 amps.

Il est à noter que ce réglage est réversible.Note that this setting is reversible.

Lorsque le courant traversant le disjoncteur d'une de ses bornes de connexion 16A,16B à l'autre, dépasse par ailleurs une autre valeur préétablie, la déflexion, entre ses extrémités fixes, du bilame 26, qui est traversé par ce courant et chauffé en conséquence, est suffisante pour que ce bilame 26 vienne agir sur la tête 68 de la vis 64 portée par la palette 51.When the current passing through the circuit breaker from one of its connection terminals 16A, 16 B to the other, moreover exceeds another preset value, the deflection, between its fixed ends, of the bimetallic strip 26, which is crossed by this current and heated accordingly, is sufficient for this bimetal February 6 comes to act on the head 68 of the screw 64 carried by the pallet 51.

Entraînant alors cette palette 51, le bilame 26 provoque la cassure de l'accrochage précédemment assuré entre l'ergot 74 de cette palette 51 et la branche d'extrémité libre 32 du ressort d'ouverture 29, et donc, suivant le processus décrit ci-ùessus, le passage en position de déclenchement de l'ensemble.Then causing this pallet 51, the bimetallic strip 26 causes the breaking of the attachment previously assured between the lug 7 4 of this pallet 51 and the free end branch 32 of the opening spring 29, and therefore, according to the process described above, the transition to the tripping position of the assembly.

Le réglage de la valeur du seuil, ou courant de déclenchement thermique,. correspondant, est effectué en agissant sur la vis 64, pour permettre la variation de distances souhaitables entre la tête 68 de cette vis et le bilame 26.The setting of the threshold value, or thermal trip current. corresponding, is carried out by acting on the screw 64, to allow the variation of desirable distances between the head 68 of this screw and the bimetallic strip 26.

Il est à noter que, comme pour réglage du courant de déclenchement magnétique, ce réglage du courant de déclenchement thermique est réversible.It should be noted that, as for setting the magnetic trip current, this setting of the thermal trip current is reversible.

Dans ce qui précède, le disjoncteur concerné a été supposé monopolaire.In the above, the circuit breaker concerned has been assumed to be monopolar.

Mais, plusieurs disjoncteurs peuvent être associés les uns aux autres, pour la constitution de pôles d'un ensemble multipolaire.However, several circuit breakers can be associated with each other, for the constitution of poles of a multipole assembly.

par exemple, figure 14, deux pôles sont ainsi prévus, étant entendu que ce nombre peut être supérieur et par exemple égal à trois ou quatre.for example, in figure 14, two poles are thus provided, it being understood that this number can be greater and for example ple equal to three or four.

Chacun des pôles du disjoncteur multipolaire ainsi constitués est analogue à celui décrit ci-dessus.Each of the poles of the multipole circuit breaker thus formed is similar to that described above.

Mais, d'une part, chacun de ces pôles comporte en outre, longitudinalement, une tirette 99, et, d'autre part, transversalement, il leur est associé,.dans leur ensemble, un coulisseau 100 commun.But, on the one hand, each of these poles further comprises, longitudinally, a zipper 99, and, on the other hand, transversely, it is associated with them,. As a whole, a common slide 100.

A la figure 14, et pour une meilleure clarté de celle-ci, seuls ont été représentés, pour l'essentiel, ce coulisseau 100 et la tirette 99 de chacun des pôles concernés, ainsi que, schématiquement, les pièces avec lesquelles ils coopèrent à savoir, pour chacun desdits pôles, la branche d'extrémité libre 32 du ressort d'ouverture 29, pour ce qui concerne la tirette 99, et la palette 51, pour ce qui concerne le coulisseau 100.In Figure 14, and for better clarity thereof, only have been shown, for the most part, this slide 100 and the pull tab 99 of each of the poles concerned, as well as, schematically, the parts with which they cooperate. namely, for each of said poles, the free end branch 32 of the opening spring 29, with regard to the pull bar 99, and the pallet 51, with regard to the slide 100.

Il en est de même sur la figure 13, sur laquelle, cependant, se trouvent schématiquement indiqués la manette d'enclenchement et de déclenchement 37, le rouleau de verrouillage 45, le contact fixe 20A et le contact mobile 20B.- It is the same in Figure 13, in which, however, are schematically indicated the engagement and trigger lever 37, the locking roller 45, the fixed contact 20A and the movable contact 20B. -

Pour chaque pôle concerné, la tirette 99 présente deux épaulements 101,102 par lesquels elle encadre la branche d' extrémité libre 32, formant organe' d'accrochage du ressort d' ouverture 29, et, à son autre extrémité, elle porte un ergot 103.For each pole concerned, the pull tab 99 has two shoulders 101, 102 by which it frames the free end branch 32, forming a member for hooking the opening spring 29, and, at its other end, it carries a lug 103.

Le coulisseau 100, qui s'étend transversalement de pôles en pôles en traversant les boîtiers 10 de ceux-ci à la faveur de fenêtres 105 ménagées à cet effet dans ceux-ci, présente, pour chacun de ces pôles, sur deux bords opposés, deux rampes inclinées, l'une, 106, pour action de l'ergot 103 de la tirette 99 correspondante, l'autre, 107, pour action sur la palette 51 de ce pôle.The slider 100, which extends transversely from poles to poles by crossing the housings 10 thereof by means of windows 105 provided for this purpose therein, has, for each of these poles, on two opposite edges, two inclined ramps, one, 106, for action of the lug 103 of the corresponding pull tab 99, the other, 107, for action on the pallet 51 of this pole.

Ainsi qu'il est aisé de le comprendre, en cas de déclenchement thermique ou magnétique de l'un quelconque des pôles concernés, la branche d'extrémité libre 32 du ressort d'ouverture 29 de celui-ci vient, après une course à vide nécessaire pour éviter que l'ouverture de son contact mobile ne soit ralentie, porter sur l'épaulement 102 de la tirette-99 de ce pôle, et provoque donc le déplacement de celle-ci suivant la flèche F7 de la figure 13.As is easy to understand, in the event of thermal or magnetic tripping of any of the poles concerned, the free end branch 32 of the opening spring 29 thereof comes, after an idle stroke necessary to prevent the opening of its movable contact from being slowed down, wear on the shoulder 102 of the zipper-99 of this pole, and therefore causes it to move along arrow F7 in FIG. 13.

par son ergot 103, cette tirette 99 vient à son tour porter sur la rampe inclinée 106 correspondante du coulisseau 100, ce qui provoque le déplacement de celui-ci suivant la flèche 8 de la figure 14.by its lug 103, this zipper 99 in turn comes to bear on the corresponding inclined ramp 106 of the slide 100, which causes the displacement thereof according to arrow 8 in FIG. 14.

par ces rampes 107, le coulisseau 100 vient alors agir sur les palettes 51 de l'ensemble des pôles et provoque donc le déclenchement de ceux qui seraient encore en position d'enclenchement.by these ramps 107, the slide 100 then acts on the pallets 51 of the set of poles and therefore causes the tripping of those which are still in the latching position.

Au réenclenchement, qui se fait comme précédemment par action sur les manettes d'enclenchement et de déclenchement 37, celles-ci étant couplées de manière usuelle par une traverse 110, chaque ressort d'ouverture 29 provoque, par sa branche d'extrémité libre 32, qui vient porter sur l'épaulement 101 de la tirette 99 correspondante, le retour en position initiale de celle-ci, et les palettes 51 provoquent également, par action sur les rampes inclinées 107 du coulisseau 100, le retour en position initiale de celui-ci.When reclosing, which is done as previously by action on the interlocking and tripping levers 3 7 , these being coupled in the usual manner by a cross member 110, each opening spring 29 causes, by its free end branch 32, which comes to bear on the shoulder 101 of the corresponding pull tab 99, the return to its initial position, and the pallets 51 also cause, by action on the inclined ramps 107 of the slide 100, the return to the initial position of this one.

Bien entendu, la présente invention ne se limite pas aux formes de mise en oeuvre décrites et représentées, mais englobe toute variante d'exécution.Of course, the present invention is not limited to the embodiments described and shown, but encompasses any variant.

En particulier, bien que, de manière avantageuse, dans la forme de réalisation décrite, le bilame constitue le conducteur traversant l'organe de déclenchement électromagnétique, un autre conducteur peut lui être substitué, notamment lorsque plusieurs passages d'un tel conducteur sont nécessaires.In particular, although, advantageously, in the embodiment described, the bimetallic strip constitutes the conductor passing through the electromagnetic tripping member, another conductor may be substituted for it, in particular when several passages of such a conductor are necessary.

En outre, au lieu que ce bilame constitue directement par lui-même le conducteur de l'organe de déclenchement thermique soumis à échauffement, il peut lui être substitué un conducteur calibré chauffant indirectement un tel bilame.In addition, instead of this bimetallic strip constituting directly by itself the conductor of the thermal trip member subjected to heating, it may be substituted for it a calibrated conductor indirectly heating such a bimetallic strip.

Dans tous les cas, le ressort d'ouverture assure avantageusement par lui-même, ainsi qu'on l'aura noté, une multiplicité de fonctions, et, notamment, par sa branche élastique de flexion, le rappel élastique de l'organe d'accrochage que constitue cette branche, et l'ouverture du contact mobile.In all cases, the opening spring advantageously ensures by itself, as will have been noted, a multiplicity of functions, and, in particular, by its elastic branch of bending, the elastic return of the member d 'hooking that constitutes this branch, and the opening of the movable contact.

Claims (19)

1. Disjoncteur, du genre comportant, dans un boîtier (10), un premier contact (20A), qui est fixe, un deuxième contact (20B), qui est monté mobile entre une position d'enclenchement et une position de déclenchement, et qui est sollicité en direction de cette position de déclenchement par un ressort d' ouverture (29), une manette d'enclenchement et de déclenchement (37), qui est montée mobile entre une position d'enclenchement et une position de déclenchement, et qui est sollicitée en direction de cette position de déclenchement par un ressort de rappel (42), un mécanisme de verrouillage (43),qui est établi entre la manette d'enclenchement et le déclenchement (37) et le boîtier (10), et qui est propre à maintenir de manière débrayable en position d'enclenchement ladite manette d'enclenchement et de déclenchement (37), un mécanisme d'accrochage, qui est établi entre la manette d'enclenchement et de déclenchement (37) et le contact mobile (20B), et qui comporte deux organes d'accrochage (32,74) susceptibles de venir en prise de manière débrayable l'un avec l'autre pour maintien du contact mobile (20B) en position d'enclenchement, et au moins un organe de déclenchement, qui est apte à provoquer le dégagement l'un par rapport à l'autre desdits organes d'accrochage (32,74) et, par là, la libération du contact mobile (20B), pour passage de celui-ci de sa position d'enclenchement à sa position de déclenchement, caractérisé en ce que l'un (32) des organes d'accrochage du mécanisme d'accrochage fait partie intégrante du ressort d'ouverture (29) du contact mobile (20B).1. Circuit breaker, of the type comprising, in a housing (10), a first contact (20A), which is fixed, a second contact (20 B ), which is mounted movably between a latching position and a tripping position, and which is biased in the direction of this triggering position by an opening spring (29), an engagement and trigger lever (37), which is mounted to move between an engagement position and a trigger position, and which is biased towards this triggering position by a return spring (42), a locking mechanism (43), which is established between the engagement and trigger lever (37) and the housing (10), and which is capable of disengageably holding in the engagement position said engagement and release handle (37), a latching mechanism, which is established between the engagement and release handle (37) and the movable contact (20B), and which comprises two hooking members (32,74) capable of engaging disengageably with each other to maintain the movable contact (20B) in the latching position, and at least one triggering member, which is capable of causing the release l relative to one another of said hooking members (32,74) and, thereby, the release of the movable contact (20 B ), for passage of the latter from its latching position to its tripping position , characterized in that one (32) of the hooking members of the hooking mechanism forms an integral part of the opening spring (29) of the movable contact (20B). 2. Disjoncteur suivant la revendication 1, dans lequel le ressort d'ouverture (29) est un ressort de torsion dont une (30) des branches d'extrémité est en prise avec une butée fixe (31) solidaire du boîtier (10), caractérisé en ce que ce ressort de torsion (29) constitue un organe d'accrochage par l' autre (32) de ses branches d'extrémité.2. A circuit breaker according to claim 1, in which the opening spring (29) is a torsion spring one of which (30) of the end branches is engaged with a fixed stop (31) integral with the housing (10), characterized in that this torsion spring (29) constitutes a fastening member by the other (32) of its end branches. 3. Disjoncteur suivant la revendication 2, caractérisé en ce que la branche d'extrémité formant organe d'accrochagâgè (32) du ressort de torsion (29) est engagée dans une rainure de guidage (76).3. Circuit breaker according to claim 2, characterized in that the end branch forming hooking member (32) of the torsion spring (29) is engaged in a guide groove (76). 4. Disjoncteur suivant la revendication 3, caractérisé en ce que ladite rainure de guidage (76) est formée dans la manette d'enclenchement et de déclenchement (37).4. Circuit breaker according to claim 3, characterized in that said guide groove (76) is formed in the interlocking and tripping lever (37). 5. Disjoncteur suivant la revendication 2, caractérisé en ce que la partie médiane de torsion (33) du ressort de torsion (29) est fractionnée en deux portions, à savoir une première portion (34), qui s'étend d'un premier côté du contact mobile (20B)1 en continuité avec la branche d'extrémité fixe (30) dudit ressort de torsion (29), et une deuxième portion (34'),qui s'étend de l'autre côté du contact mobile (20B) en continuité avec la branche formant organe d'accrochage (32) du ressort de torsion, lesdites première et deuxième portions (34,34') étant reliées en continuité l'une avec l'autre par une traverse (35) engagée transversalement dans une encoche (36) du contact mobile (20B).5. Circuit breaker according to claim 2, characterized in that the central torsion part (33) of the torsion spring (29) is divided into two portions, namely a first portion (34), which extends from a first side of the movable contact (20B) 1 in continuity with the fixed end branch (30) of said torsion spring (29), and a second portion (34 '), which extends on the other side of the movable contact ( 20B) in continuity with the branch forming an attachment member (32) of the torsion spring, said first and second portions (34, 34 ′) being connected in continuity with one another by a cross member (35) engaged transversely in a notch (36) of the movable contact (20B). 6. Disjoncteur suivant la revendication 5, caractérisé en ce que ladite deuxième portion (34') de la partie médiane de torsion (33 ) du ressort de torsion (29) se réduit à une fraction de spire.6. Circuit breaker according to claim 5, characterized in that said second portion (34 ') of the central torsion part (33) of the torsion spring (29) is reduced to a fraction of a turn. 7. Disjoncteur suivant l'une quelconque des revendications 1 à 6, dans lequel un organe de déclenchement électromagnétique est prévu, qui comporte une culasse 50 traversée par au moins un passage de conducteur et une palette (51) montée pivotante vis-à-vis de ladite culasse (50), caractérisé en ce que la manette d'enclenchement et de déclenchement (37), la culasse (50) de l'organe de déclenchement électromagnétique, et la palette (51) associée à celle-ci appartiennent conjointement à un même équipage mobile.7. A circuit breaker according to any one of claims 1 to 6, in which an electromagnetic tripping member is provided, which comprises a yoke 50 traversed by at least one conductor passage and a pallet (51) pivotally mounted opposite. of said yoke (50), characterized in that the engagement and trigger lever (37), the yoke (50) of the electromagnetic trigger member, and the pallet (51) associated with it belong together the same mobile equipment. 8. Disjoncteur suivant la revendication 7, dans lequel la palette (51) de l'organe de déclenchement électromagnétique porte l'autre (74) des organes d'accrochage du mécanisme d'accrochage, caractérisé en ce que l'axe de pivotement de ladite palette (51) s'étend perpendiculairement à l'axe de la partie médiane de torsion (33) du ressort de torsion formant le ressort d'ouverture (29) du contact mobile (20A), et ladite palette (51) porte transversalement en saillie un ergot (74) par lequel elle peut venir en prise avec la branche d'extrémité (32) formant organe d'accrochage dudit ressort de torsion (29).8. A circuit breaker according to claim 7, wherein the pallet (51) of the electromagnetic tripping member carries the other (74) of the latching members of the latching mechanism, characterized in that the pivot axis of said pallet (51) extends perpendicular to the axis of the central torsion part (33) of the torsion spring forming the opening spring (29) of the movable contact (20A), and said pallet (51) carries transversely projecting a lug (74) by which it can engage with the end branch (32) forming an attachment member of said torsion spring (29). 9. Disjoncteur suivant la revendication 8, caractérisé en ce que, en association avec ledit ergot (74), ladite palette (51) présente une rampe inclinée de réarmement (78).9. Circuit breaker according to claim 8, characterized in that, in association with said lug (74), said pallet (51) has an inclined reset ramp (78). 10. Disjoncteur suivant la revendication 8, caractérisé en ce que, pour le montage pivotant de la palette (51) de l'organe de déclenchement électromagnétique, des moyens d'emboîtement sont prévus entre elle et la culasse (50) à laquelle elle est associée, lesdits moyens d'emboîtement comportant par ple au moins un pion (55) porté en saillie par la palette (51) et engagé dans une cuvette (56) de la culasse (50), ou vice-versa.10. Circuit breaker according to claim 8, characterized in that, for the pivoting mounting of the pallet (51) of the electromagnetic tripping member, interlocking means are provided between it and the cylinder head (50) to which it is associated, said fitting means comprising by ple at least one pin (55) projecting from the pallet (51) and engaged in a bowl (56) of the cylinder head (50), or vice versa. 11. Disjoncteur suivant l'une quelconque des revendications 7 à 10, caractérisé en ce que, pour réglage de l'entrefer de l'organe de déclenchement électromagnétique, la culasse (50) de ce dernier est réglable en position.11. Circuit breaker according to any one of claims 7 to 10, characterized in that, for adjusting the air gap of the electromagnetic trip member, the yoke (50) of the latter is adjustable in position. 12. Disjoncteur suivant la revendication 11, caractérisé en .ce que ladite culasse (50) est soumise à un ressort de maintien (58) qui l'applique contre une butée réglable (59).12. Circuit breaker according to claim 11, characterized in that said cylinder head (50) is subjected to a retaining spring (58) which applies it against an adjustable stop (59). 13. Disjoncteur suivant-la revendication 12, dans lequel la palette (51) est soumise à un ressort de polarisation (58)qui la sollicite en direction d'une position déterminée, caracté- ris en ce que ledit ressort de polarisation (58) est d'un seul tenant avec le ressort de maintien (58) de la culasse (50).13. A circuit breaker according to claim 12, in which the pallet (51) is subjected to a polarization spring (58) which biases it in the direction of a determined position, characterized in that said polarization spring (58) is integral with the retaining spring (58) of the cylinder head (50). 14. Disjoncteur suivant l'une quelconque des revendications 7 à 13, dans lequel la manette d'enclenchement et de déclenchement (37) forme un coulisseau, caractérisé en ce que ledit coulisseau (37) est creux et forme ainsi globalement un cais-' son à l'abri duquel sont disposées le culasse (50) et la palette (51) de l'organe de déclenchement électromagnétique.14. Circuit breaker according to any one of claims 7 to 13, in which the engagement and tripping lever (37) forms a slide, characterized in that said slide (37) is hollow and thus generally forms a box, sheltered from which are arranged the yoke (50) and the pallet (51) of the electromagnetic trip member. 15. Disjoncteur suivant l'une quelconque des revendications 7 à 14, dans lequel le mécanisme de verrouillage comporte un organe de roulement (45), rouleau par exemple, qui est disposé entre deux épaulements (48,49) de la manette d'enclenchement et de déclenchement (37),et qui est propre à coopérer en verrouillage avec une encoche (47)du boîtier (10) caractérisé en ce que la culasse (50) de l'organe de déclenchement magnétique coopère par une rampe oblique (70) avec ledit organe de roulement (45).15. A circuit breaker according to any one of claims 7 to 14, wherein the locking mechanism comprises a rolling member (45), roller for example, which is disposed between two shoulders (48,49) of the interlocking lever and trigger (37), and which is adapted to cooperate in locking with a notch (47) of the housing (10) characterized in that the yoke (50) of the magnetic trigger member cooperates by an oblique ramp (70) with said rolling member (45). 16. Disjoncteur suivant l'une quelconque des revendications 7 à 15, dans lequel un organe de déclenchement thermique, formé d'un bilame (26), est prévu, caractérisé en ce que le con---ducteur traversant la culasse (50) de l'organe de déclenchement électromagnétique est constitué par le bilame (26) formant' l'organe de déclenchement thermique.16. Circuit breaker according to any one of claims 7 to 15, in which a thermal trip member, formed of a bimetallic strip (26), is provided, characterized in that the conductor passing through the cylinder head (50) of the electromagnetic trip member is constituted by the bimetallic strip (26) forming the thermal trip member. 17. Disjoncteur suivant la revendication 16, caractérisé en ce que ledit bilame (26) est fixé à chacune de ses extrémités.17. Circuit breaker according to claim 16, characterized in that said bimetallic strip (26) is fixed to each of its ends. 18. Disjoncteur suivant l'une quelconque des revendications 1 à 17, caractérisé en ce que, pour un déclenchement multipolaire, il comporte en outre, d'une part,longitudinalement une tirette (99), qui, à l'une de ses extrémités, présente deux épaulements (101,102) par lesquels elle encadre la branche formant organe d'accrochage (32) du ressort de torsion (29) et qui à son autre extrémité, porte un ergot (103), et d'autre part, transversalement, un coulisseau (100), qui s'étend de disjoncteur en disjoncteur, en traversant les boîtiers (10) de ceux-ci et qui, pour chacun d'eux comporte deux rampes inclinées (106,107), l'une pour action de l'ergot (103) de la tirette (99) correspondante, l'autre pour action sur la palette (51) de l'organe de déclenchement électromagnétique correspondant.18. Circuit breaker according to any one of claims 1 to 17, characterized in that, for a multipolar trip, it further comprises, on the one hand, longitudinally a pull tab (99), which, at one of its ends , has two shoulders (101, 102) by which it frames the branch forming an attachment member (32) of the torsion spring (29) and which at its other end carries a lug (103), and on the other hand, transversely, a slide (100), which extends from circuit breaker to circuit breaker, passing through the housings (10) thereof and which, for each of them comprises two inclined ramps (106,107), one for action of the lug (103) of the corresponding pull tab (99), the other for action on the pallet (51) of the corresponding electromagnetic trip member. 19. Disjoncteur suivant l'une quelconque des revendications 1 à 18, dans lequel le contact mobile (20B) est monté rotatif sur un axe de support (23), caractérisé en ce que ledit axe de support (23) est conducteur, pour liaison électrique entre ledit contact mobile (20B) et la borne de connexion (163) correspondante.19. A circuit breaker according to any one of claims 1 to 18, in which the movable contact (20B) is rotatably mounted on a support pin (23), characterized in that said support pin (23) is conductive, for connection electric between said movable contact (20B) and the corresponding connection terminal (163).
EP19800401516 1979-10-26 1980-10-24 Circuit-breaking switch, its release mechanism Expired EP0028958B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7926588A FR2468991A1 (en) 1979-10-26 1979-10-26 CIRCUIT BREAKER AND ITS HANGING MECHANISM
FR7926588 1979-10-26

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EP0028958A1 true EP0028958A1 (en) 1981-05-20
EP0028958B1 EP0028958B1 (en) 1983-11-09

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EP19800401516 Expired EP0028958B1 (en) 1979-10-26 1980-10-24 Circuit-breaking switch, its release mechanism

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EP (1) EP0028958B1 (en)
DE (1) DE3065550D1 (en)
FR (1) FR2468991A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144799A2 (en) * 1983-11-24 1985-06-19 BROWN, BOVERI & CIE Aktiengesellschaft Protection switch
FR2563375A1 (en) * 1984-04-24 1985-10-25 Legrand Sa CIRCUIT BREAKER WITH DIFFERENTIAL FUNCTION
FR2587829A1 (en) * 1985-09-20 1987-03-27 Telemecanique Electrique ELASTIC SWING PROTECTION SWITCH
FR2598254A1 (en) * 1986-05-05 1987-11-06 Legrand Sa Electrical contraption with floating mobile contact, in particular circuit breaker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105968B (en) * 1960-04-14 1961-05-04 Continental Elektro Ind Ag Switching device for electrical switches
FR2337414A1 (en) * 1975-12-29 1977-07-29 Ellenberger & Poensgen ROCKER CONTROL LEVER SWITCH
US4092623A (en) * 1976-07-21 1978-05-30 Mechanical Products Circuit breaker
FR2417177A1 (en) * 1978-02-10 1979-09-07 Legrand Sa Circuit breaker interlock mechanism - has roller and ball operated intermediate holding section movable along channel
FR2420839A1 (en) * 1978-03-22 1979-10-19 Legrand Sa CIRCUIT BREAKER, ITS TRIP MECHANISM

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105968B (en) * 1960-04-14 1961-05-04 Continental Elektro Ind Ag Switching device for electrical switches
FR2337414A1 (en) * 1975-12-29 1977-07-29 Ellenberger & Poensgen ROCKER CONTROL LEVER SWITCH
US4092623A (en) * 1976-07-21 1978-05-30 Mechanical Products Circuit breaker
FR2417177A1 (en) * 1978-02-10 1979-09-07 Legrand Sa Circuit breaker interlock mechanism - has roller and ball operated intermediate holding section movable along channel
FR2420839A1 (en) * 1978-03-22 1979-10-19 Legrand Sa CIRCUIT BREAKER, ITS TRIP MECHANISM

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144799A2 (en) * 1983-11-24 1985-06-19 BROWN, BOVERI & CIE Aktiengesellschaft Protection switch
EP0144799A3 (en) * 1983-11-24 1985-07-10 Brown, Boveri & Cie Aktiengesellschaft Electric switch
FR2563375A1 (en) * 1984-04-24 1985-10-25 Legrand Sa CIRCUIT BREAKER WITH DIFFERENTIAL FUNCTION
EP0161968A1 (en) * 1984-04-24 1985-11-21 Legrand Circuit breaker with a differential function
FR2587829A1 (en) * 1985-09-20 1987-03-27 Telemecanique Electrique ELASTIC SWING PROTECTION SWITCH
EP0218497A1 (en) * 1985-09-20 1987-04-15 Telemecanique Protective circuit breaker with a resilient link
FR2598254A1 (en) * 1986-05-05 1987-11-06 Legrand Sa Electrical contraption with floating mobile contact, in particular circuit breaker

Also Published As

Publication number Publication date
EP0028958B1 (en) 1983-11-09
FR2468991B1 (en) 1981-11-13
DE3065550D1 (en) 1983-12-15
FR2468991A1 (en) 1981-05-08

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