EP0079819B1 - Mechanically operated switch with automatic opening - Google Patents

Mechanically operated switch with automatic opening Download PDF

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Publication number
EP0079819B1
EP0079819B1 EP82402020A EP82402020A EP0079819B1 EP 0079819 B1 EP0079819 B1 EP 0079819B1 EP 82402020 A EP82402020 A EP 82402020A EP 82402020 A EP82402020 A EP 82402020A EP 0079819 B1 EP0079819 B1 EP 0079819B1
Authority
EP
European Patent Office
Prior art keywords
switch
button
push
cartridge
striker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82402020A
Other languages
German (de)
French (fr)
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EP0079819B2 (en
EP0079819A1 (en
Inventor
Christian Thomas
Roger Vayre
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique 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
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Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT82402020T priority Critical patent/ATE11712T1/en
Publication of EP0079819A1 publication Critical patent/EP0079819A1/en
Publication of EP0079819B1 publication Critical patent/EP0079819B1/en
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Publication of EP0079819B2 publication Critical patent/EP0079819B2/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • Such switches are in particular used in protective devices where the power contacts are used at the same time for the frequent establishment and breaking of the supply circuits which are usually controlled by contactors.
  • this result is achieved by the fact that the switch, the breaking chamber, the coil and the striker, as well as the locking device, are placed in a removable insulating cartridge which is placed in a housing of the the device and which presents externally, on the one hand, two connection terminals which cooperate with terminals of the protection device going towards the network or towards a user device and between which the coil and the switch are placed in series, and, on the other hand, in a region opposite to the breaking chamber, one end of the pusher capable of cooperating with the moving part of the control device, and one end of the locking device capable of communicating a movement when the switch is maintained in the safety opening position, guiding and holding means being placed on this cartridge to ensure this cooperation and the communication of this movement.
  • the limiter switch which will be described below can be used in a protective device shown diagrammatically at 1 in FIG. 1 a; this device mainly comprises, in a housing 2, an automatic switch 3 whose safety opening in the event of the occurrence of a fault current, in particular of short circuit, is operated using a coil 4 placed in series with this switch between an input terminal 5 connected to the network R and an output terminal 6 connected to a load C, and a manual control device 7 whose operation produces the rapid opening or closing of the switch thanks to a movable control piece 8 acting on a push-button 9 of the switch, while a fault signaling member 10 associated with the switch acts on the manual control device 7 to give it, when a fault appears , a special state which interrupts the action of the control device and confirms automatic opening.
  • This limiting switch can also be used in a contactor device having additional functions for limiting the current (and possibly circuit breaker) shown diagrammatically at 11 in FIG. 1 b; like the previous one, the latter device comprises, in a housing 12, a switch 13 and a coil 14, placed in series between the terminals 15, 16, similar to those of the switch 3, but whose repeated closing and opening control is carried out by an electromagnet 17 of which a movable control part 18 cooperates with the pusher 19 of the switch 13, while the fault signaling member 20 acts directly or indirectly on a control contact 21 placed in series with the coil 22 of the electromagnet so as to confirm, if necessary, the automatic safety opening by de-excitation of this electromagnet.
  • Additional terminals 25, 26 are used here to apply a control signal to the electromagnet.
  • the switch 3, 13, which is contained in a removable insulating cartridge 23 which can be separated from the housing 1, 11, can be single or double cut, and it is clear that the number of cartridges used in a device corresponds to the number of network phases.
  • the first branch 27 contains a first volume 29 in which are arranged the switch 3, respectively 13, and a breaking chamber 30 which is associated therewith and which comprises, in known manner, fins 31, 32 for the splitting of the arcs.
  • This switch comprises, in the example shown, two fixed contacts 33, 34 which are carried by folded conductors 35, respectively 36, one of which leads to a first connection terminal 37 external to the cartridge; a movable bridge contact 38 is carried by a movable contact carrier 39 which can move along an axis ZZ ′ thanks to guide surfaces 40 of the cartridge.
  • the movable contact and the contact carrier are subjected to the action of a fixed compression spring 41 which tends to close the switch by pressing on an internal end 42 of the contact carrier and on a wall 43 of the cartridge.
  • the folded shape of the conductors 35, 36 allows the development of repulsion forces on the movable contact bridge 38 which runs parallel to them.
  • a second end 44 of the contact carrier 39, opposite the first, is placed outside the first volume and has a first bearing surface 45, directed towards the spring 41, and an elongated opening 46 having a second bearing surface 47 , also directed towards the spring.
  • the second branch 28 contains a second volume 48 in which are arranged, on the one hand, a magnetizable yoke 49, a coil 50 which is associated with it and a magnetizable striker 51 of the plunger core type and, on the other hand, a lever for transmission 52 and a locking lever 53.
  • the ends of the coil 50 are connected, on the one hand, to the folded conductor 36, for example using a flexible conductor 54, and, on the other hand, to a second external connection terminal 55.
  • the striker which takes a rest position, visible in fig. 2 (for example using a spring not shown), can move along an axis VV 'which is also that of the coil 50 and which is substantially parallel to the axis ZZ'.
  • the transmission lever 52 which moves in a median plane PP 'of the cartridge thanks to a pivot or pin 56 whose axis is perpendicular to this plane, has a free end 57 which penetrates into the elongated opening 46 of the door contact 39 so as to be able to cooperate with the second bearing surface 47, and a central portion 58 placed opposite one end 59 of the striker; a return spring 60 is associated with this transmission lever to hold it elastically against a fixed stop 61 in a rest position R which is that shown in FIG. 2.
  • the locking lever 53 oscillates around a pivot 62 whose axis YY 'is parallel to the median plane PP' or passes through it; this axis YY 'is substantially perpendicular to the axis VV' of the coil.
  • a return spring 63 placed for example around the pivot 62, communicates to this locking lever 53 a torque K counterclockwise, visible in particular in FIG. 3, which makes it apply a first end 64 against a lateral face 65 of the transmission lever and which gives a second end 66 of the locking lever 53, outside the second volume, a particular position I.
  • the transmission lever 52 is placed between the first volume 29 and the coil 50, and that the outer end 44 of the contact carrier acting as a pusher moves in the vicinity of the second branch 28 of the cartridge in a region 75 opposite the breaking chamber 30, while the outer end 66 of the locking lever 53 moves at the end of this second branch 28 in a region 76 also opposite the breaking chamber.
  • the cartridge 23 is preferably produced by the association of two insulating half-housings 67 and 68 (see fig. 3) which are applied one on the other along a joint plane coincident with the median plane PP 'and are kept in contact either by elastic hooks coming from molding with the half-housings, or by external metal clamps, or even by rivets.
  • the contact carrier 39 When the switch must be open and set to position 0 (see fig. 7), the contact carrier 39 receives on its first bearing surface 45 a thrust of direction F which is given to it by a part 8, 18 of the device mechanical control 7 or electromagnetic control 17; thanks to a clearance j existing between the end 57 of the transmission lever 52 and the elongated opening 46, this movement has no effect on this transmission lever; the switch closes under the effect of the spring 41 when the action on the contact carrier 39 ceases.
  • the locking lever 53 takes an active position A, visible in FIG. 5, under the effect of its return spring 63.
  • a specific signal can be issued to inform maintenance personnel that the automatic opening is due to the appearance of a short-circuit current.
  • the cartridge 33 is also guided in the housing of the device which receives it by means of grooves 71, 72 parallel to the axis ZZ ', which are placed on the opposite external faces 73, 74 parallel to the contact carrier plane ( fig. 6 and 3).
  • the contact carrier 39 shown in the previous figures and acting as a pusher, can also be replaced by another pusher 77 to act on a movable contact with single break 78, visible in FIG. 8, which is returned by a spring 81 and cooperates with a single fixed contact 79 of switch 3.
  • the cartridge 23 is held in a cell 1 ', respectively 11', of the apparatus thanks to the cooperation, on the one hand, of surfaces such as 84, 85 with walls 86.87 the housing 1,11 and, on the other hand, surfaces such as 88 with a cover 89 closing the cell.
  • the external terminals 37 and 55 of the cartridge cooperate with the internal terminals 82, 83 of the housing 1 going towards the connection terminals 5, 6, respectively 15, 16, of the device which receives it, while the end 66 of the locking lever transmits its possible displacement to a transmission part 90 whose purpose is to trigger the mechanical device 7 or the control switch 21 of the electromagnetic device 17.
  • Resetting of the locking 53 and transmission 52 members is obtained by communicating at the end 66, by means of manual or automatic control not described, a movement of direction G (FIG. 5).

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
  • Reciprocating Pumps (AREA)
  • Cookers (AREA)
  • Electronic Switches (AREA)

Abstract

A mechanically controlled power switch with automatic opening is provided for limiting short circuits. A switch (13), a breaking chamber (30) which is associated therewith, a coil (50), a striker (51) cooperating therewith, and a lock (53) for holding the power switch in open position S after the appearance of a short circuit are placed in a removable cartridge (23) provided with connection terminals (37, 55). This switch cartridge is advantageously used in mechanically controlled protection apparatus or in electromagnetic contactor apparatus having their own protection.

Description

L'invention concerne un interrupteur à commande mécanique et ouverture automatique pour un appareil de protection limiteur, appareil comprenant:

  • - un boîtier;
  • - une chambre de coupure pourvue d'ailettes de fractionnement des arcs;
  • - un interrupteur de puissance placé dans cette chambre et ayant au moins un contact fixe et un contact mobile qui est actionné par un poussoir et qui est soumis à l'action d'un ressort de compression fixe tendant à l'appliquer sur le contact fixe;
  • - une bobine qui est placée en série dans un circuit où se trouve l'interrupteur et qui est apte à attirer un percuteur magnétisable lorsque le circuit est parcouru par un courant de court-circuit;
  • - un dispositif de commande ayant une pièce mobile qui coopère par poussée avec le poussoir pour déplacer le contact mobile, et
  • - des bornes d'entrée et de sortie pour raccorder l'interrupteur, ce percuteur coopérant avec ce poussoir de façon à déplacer celui-ci lors de son attraction et indépendamment de la pièce mobile, et à l'amener dans une position où un dispositif de verrouillage maintient l'interrupteur dans une position d'ouverture de sécurité.
The invention relates to a switch with mechanical control and automatic opening for a limiting protective device, device comprising:
  • - a housing;
  • - a breaking chamber provided with arc splitting fins;
  • - a power switch placed in this chamber and having at least one fixed contact and one movable contact which is actuated by a pusher and which is subjected to the action of a fixed compression spring tending to apply it to the fixed contact ;
  • - a coil which is placed in series in a circuit where the switch is located and which is capable of attracting a magnetizable striker when the circuit is traversed by a short-circuit current;
  • a control device having a movable part which cooperates by pushing with the pusher to move the movable contact, and
  • - input and output terminals for connecting the switch, this striker cooperating with this pusher so as to move the latter during its attraction and independently of the moving part, and to bring it into a position where a device Lock keeps the switch in a safety open position.

De tels interrupteurs sont en particulier utilisés dans des appareils de protection où les contacts de puissance servent en même temps à l'établissement et à la coupure fréquents des circuits d'alimentation qui sont habituellement contrôlés par des contacteurs.Such switches are in particular used in protective devices where the power contacts are used at the same time for the frequent establishment and breaking of the supply circuits which are usually controlled by contactors.

Dans un appareil connu, dont la constitution répond à celle qui est définie ci-dessus, aucune mesure n'est prise pour permettre le remplacement des contacts fixes ou mobiles; de telles mesures, qui répondent pourtant à l'un des soucis constants des utilisateurs, rencontrent dans ce cas particulier des difficultés dues, notamment, à la relative complexité du dispositif; il est donc souhaitalble de rendre cette opération aussi simple que possible, en donnant à l'utilisateur des moyens qui lui permettent d'effectuer de telles opérations rapidement et qui n'offrent pas la possibilité d'un montage incorrect.In a known device, the constitution of which corresponds to that which is defined above, no measure is taken to allow the replacement of fixed or mobile contacts; such measures, which nevertheless meet one of the constant concerns of users, encounter in this particular case difficulties due, in particular, to the relative complexity of the device; it is therefore desirable to make this operation as simple as possible, by giving the user means which allow him to carry out such operations quickly and which do not offer the possibility of incorrect mounting.

Il est souhaitable, par ailleurs, de rendre possible le changement des contacts sans qu'il soit. nécessaire de séparer les bornes de l'appareil de protection du réseau et de la charge, et de mettre à la disposition des utilisateurs une gamme de contacts dont les dimensions, ainsi que celles de la bobine, répondent à différents calibres de courant et à différents niveaux de limitation.It is desirable, moreover, to make it possible to change the contacts without it being. necessary to separate the terminals of the network and load protection device, and to provide users with a range of contacts whose dimensions, as well as those of the coil, correspond to different current ratings and to different limitation levels.

Selon l'invention, ce résultat est atteint grâce au fait que l'interrupteur, la chambre de coupure, la bobine et le percuteur, ainsi que le dispositif de verrouillage, sont placés dans une cartouche isolante amovible qui se place dans un logement de l'appareil et qui présente extérieurement, d'une part, deux bornes de raccordement qui coopèrent avec des bornes de l'appareil de protection allant vers le réseau ou vers un appareil utilisateur et entre lesquelles sont placés en série la bobine et l'interrupteur, et, d'autre part, dans une région opposée à la chambre de coupure, une extrémité de poussoir apte à coopérer avec la pièce mobile du dispositif de commande, et une extrémité du dispositif de verrouillage apte à communiquer un déplacement lorsque l'interrupteur est maintenu dans la position d'ouverture de sécurité, des moyens de guidage et de maintien étant placés sur cette cartouche pour assurer cette coopération et la communication de ce déplacement.According to the invention, this result is achieved by the fact that the switch, the breaking chamber, the coil and the striker, as well as the locking device, are placed in a removable insulating cartridge which is placed in a housing of the the device and which presents externally, on the one hand, two connection terminals which cooperate with terminals of the protection device going towards the network or towards a user device and between which the coil and the switch are placed in series, and, on the other hand, in a region opposite to the breaking chamber, one end of the pusher capable of cooperating with the moving part of the control device, and one end of the locking device capable of communicating a movement when the switch is maintained in the safety opening position, guiding and holding means being placed on this cartridge to ensure this cooperation and the communication of this movement.

L'invention, ainsi que d'autres mesures complémentaires, apparaîtront clairement à l'aide de la description détaillée ci-après.The invention, as well as other complementary measures, will become clear with the aid of the detailed description below.

Aux dessins annexés:

  • les fig. 1 a et 1 b représentent schématiquement deux appareils de protection à commande mécanique, respectivement électromagnétique, dans lesquels est mis en oeuvre l'objet de l'invention ;
  • la fig. 2 montre, dans une vue en élévation coupée par un plan médian PP', une cartouche conforme à celle de l'invention, un interrupteur à double coupure étant à l'état fermé;
  • la fig. 3 illustre une vue de côté gauche de la cartouche coupée par un plan brisé QQ', l'interrupteur étant fermé;
  • la fig. 4 représente une vue en élévation de la cartouche avec coupe locale, l'interrupteur étant en position d'ouverture de sécurité;
  • la fig. 5 montre une vue de côté de la cartouche avec coupe locale par le plan QQ' lorsque l'interrupteur est en position d'ouverture de sécurité;
  • la fig. 6 illustre une vue extérieure en élévation de la cartouche selon l'invention;
  • la fig. 7 représente l'appareil selon la fig. 2 dans l'état d'ouverture commandée de l'interrupteur, et
  • la fig. 8 illustre une cartouche selon l'invention utilisant un interrupteur à simple coupure.
In the accompanying drawings:
  • fig. 1 a and 1 b schematically represent two protective devices with mechanical control, respectively electromagnetic, in which the object of the invention is implemented;
  • fig. 2 shows, in an elevation view cut by a median plane PP ', a cartridge in accordance with that of the invention, a double-break switch being in the closed state;
  • fig. 3 illustrates a left side view of the cartridge cut by a broken plane QQ ', the switch being closed;
  • fig. 4 shows an elevational view of the cartridge with local section, the switch being in the safety opening position;
  • fig. 5 shows a side view of the cartridge with local section through the plane QQ 'when the switch is in the safety opening position;
  • fig. 6 illustrates an external elevation view of the cartridge according to the invention;
  • fig. 7 shows the apparatus according to FIG. 2 in the state of controlled opening of the switch, and
  • fig. 8 illustrates a cartridge according to the invention using a single cut-off switch.

L'interrupteur limiteur qui sera décrit ci-dessous peut être utilisé dans un appareil de protection représenté schématiquement en 1 à la fig. 1 a; cet appareil comprend principalement, dans un boîtier 2, un interrupteur automatique 3 dont l'ouverture de sécurité en cas d'apparition d'un courant de défaut, notamment de court-circuit, est opérée à l'aide d'une bobine 4 placée en série avec cet interrupteur entre une borne d'entrée 5 reliée au réseau R et une borne de sortie 6 reliée à une charge C, et un dispositif de commande manuelle 7 dont la manoeuvre produit l'ouverture ou la fermeture rapide de l'interrupteur grâce à une pièce de commande mobile 8 agissant sur un poussoir 9 de l'interrupteur, tandis qu'un organe de signalement de défaut 10 associé à l'interrupteur agit sur le dispositif de commande manuelle 7 pour lui donner, lorsqu'un défaut apparaît, un état particulier qui interrompt l'action du dispositif de commande et confirme l'ouverture automatique. Cet interrupteur limiteur peut également être utilisé dans un appareil contacteur ayant des fonctions supplémentaires de limitation de courant (et éventuellement de disjoncteur) représenté schématiquement en 11 à la fig. 1 b; comme le précédent, ce dernier appareil comprend, dans un boîtier 12, un interrupteur 13 et une bobine 14, placés en série entre les bornes 15,16, analogues à ceux de l'interrupteur 3, mais dont la commande de fermeture et d'ouverture répétées est effectuée par un électro-aimant 17 dont une pièce de commande mobile 18 coopère avec le poussoir 19 de l'interrupteur 13, tandis que l'organe de signalement de défaut 20 agit directement ou indirectement sur un contact de contrôle 21 placé en série avec la bobine 22 de l'électro-aimant de façon à confirmer, le cas échéant, l'ouverture automatique de sécurité par une désexcitation de cet électro-aimant.The limiter switch which will be described below can be used in a protective device shown diagrammatically at 1 in FIG. 1 a; this device mainly comprises, in a housing 2, an automatic switch 3 whose safety opening in the event of the occurrence of a fault current, in particular of short circuit, is operated using a coil 4 placed in series with this switch between an input terminal 5 connected to the network R and an output terminal 6 connected to a load C, and a manual control device 7 whose operation produces the rapid opening or closing of the switch thanks to a movable control piece 8 acting on a push-button 9 of the switch, while a fault signaling member 10 associated with the switch acts on the manual control device 7 to give it, when a fault appears , a special state which interrupts the action of the control device and confirms automatic opening. This limiting switch can also be used in a contactor device having additional functions for limiting the current (and possibly circuit breaker) shown diagrammatically at 11 in FIG. 1 b; like the previous one, the latter device comprises, in a housing 12, a switch 13 and a coil 14, placed in series between the terminals 15, 16, similar to those of the switch 3, but whose repeated closing and opening control is carried out by an electromagnet 17 of which a movable control part 18 cooperates with the pusher 19 of the switch 13, while the fault signaling member 20 acts directly or indirectly on a control contact 21 placed in series with the coil 22 of the electromagnet so as to confirm, if necessary, the automatic safety opening by de-excitation of this electromagnet.

Des bornes supplémentaires 25, 26 servent ici à appliquer un signal de commande à l'électro-aimant.Additional terminals 25, 26 are used here to apply a control signal to the electromagnet.

Dans l'une ou l'autre des applications possibles, l'interrupteur 3, 13, qui est contenu dans une cartouche isolante 23 amovible pouvant être séparée du boîtier 1, 11, peut être à simple ou à double coupure, et il est clair que le nombre de cartouches utilisées dans un appareil correspond au nombre des phases du réseau.In one or other of the possible applications, the switch 3, 13, which is contained in a removable insulating cartridge 23 which can be separated from the housing 1, 11, can be single or double cut, and it is clear that the number of cartridges used in a device corresponds to the number of network phases.

La cartouche isolante 23, ainsi que son contenu, apparaît mieux à la fig. 2 où l'on observe que cette cartouche prend la forme générale d'un L ayant une première branche 27 et une seconde branche 28 sensiblement perpendiculaires.The insulating cartridge 23, as well as its contents, appears better in FIG. 2 where it is observed that this cartridge takes the general form of an L having a first branch 27 and a second branch 28 substantially perpendicular.

La première branche 27 contient un premier volume 29 dans lequel sont disposés l'interrupteur 3, respectivement 13, et une chambre de coupure 30 qui lui est associée et qui comporte, de façon connue, des ailettes 31, 32 pour le fractionnement des arcs.The first branch 27 contains a first volume 29 in which are arranged the switch 3, respectively 13, and a breaking chamber 30 which is associated therewith and which comprises, in known manner, fins 31, 32 for the splitting of the arcs.

Cet interrupteur comporte, dans l'exemple représenté, deux contacts fixes 33, 34 qui sont portés par des conducteurs repliés 35, respectivement 36, dont l'un aboutit à une première borne de raccordement 37 externe à la cartouche; un contact mobile en pont 38 est porté par un porte-contact mobile 39 qui peut se déplacer le long d'un axe ZZ' grâce à des surfaces de guidage 40 de la cartouche. Le contact mobile ainsi que le porte-contact sont soumis à l'action d'un ressort de compression fixe 41 qui tend à fermer l'interrupteur en s'appuyant sur une extrémité interne 42 du porte-contact et sur une paroi 43 de la cartouche.This switch comprises, in the example shown, two fixed contacts 33, 34 which are carried by folded conductors 35, respectively 36, one of which leads to a first connection terminal 37 external to the cartridge; a movable bridge contact 38 is carried by a movable contact carrier 39 which can move along an axis ZZ ′ thanks to guide surfaces 40 of the cartridge. The movable contact and the contact carrier are subjected to the action of a fixed compression spring 41 which tends to close the switch by pressing on an internal end 42 of the contact carrier and on a wall 43 of the cartridge.

La forme repliée des conducteurs 35, 36 permet le développement de forces de répulsion sur le pont de contact mobile 38 qui circule parallèlement à ceux-ci.The folded shape of the conductors 35, 36 allows the development of repulsion forces on the movable contact bridge 38 which runs parallel to them.

Une seconde extrémité 44 du porte-contact 39, opposée à la première, est placée extérieurement au premier volume et présente une première surface d'appui 45, dirigée vers le ressort 41, et une ouverture allongée 46 ayant une seconde surface d'appui 47, également dirigée vers le ressort.A second end 44 of the contact carrier 39, opposite the first, is placed outside the first volume and has a first bearing surface 45, directed towards the spring 41, and an elongated opening 46 having a second bearing surface 47 , also directed towards the spring.

La seconde branche 28 contient un second volume 48 dans lequel sont disposés, d'une part, une culasse magnétisable 49, une bobine 50 qui lui est associée et un percuteur magnétisable 51 du genre noyau plongeur et, d'autre part, un levier de transmission 52 et un levier de verrouillage 53.The second branch 28 contains a second volume 48 in which are arranged, on the one hand, a magnetizable yoke 49, a coil 50 which is associated with it and a magnetizable striker 51 of the plunger core type and, on the other hand, a lever for transmission 52 and a locking lever 53.

Les extrémités de la bobine 50 sont reliées, d'une part, au conducteur replié 36, par exemple à l'aide d'un conducteur souple 54, et, d'autre part, à une seconde borne de raccordement extérieure 55. Le percuteur, qui prend une position de repos, visible à la fig. 2 (par exemple à l'aide d'un ressort non représenté), peut se déplacer le long d'un axe VV' qui est aussi celui de la bobine 50 et qui est sensiblement parallèle à l'axe ZZ'.The ends of the coil 50 are connected, on the one hand, to the folded conductor 36, for example using a flexible conductor 54, and, on the other hand, to a second external connection terminal 55. The striker , which takes a rest position, visible in fig. 2 (for example using a spring not shown), can move along an axis VV 'which is also that of the coil 50 and which is substantially parallel to the axis ZZ'.

Le levier de transmission 52, qui se déplace dans un plan médian PP' de la cartouche grâce à un pivot ou goupille 56 dont l'axe est perpendiculaire à ce plan, présente une extrémité libre 57 qui pénètre dans l'ouverture allongée 46 du porte-contact 39 de façon à pouvoir coopérer avec la seconde surface d'appui 47, et une portion centrale 58 placée en regard d'une extrémité 59 du percuteur; un ressort de rappel 60 est associé à ce levier de transmission pour le maintenir élastiquement contre une butée fixe 61 dans une position de repos R qui est celle représentée à la fig. 2.The transmission lever 52, which moves in a median plane PP 'of the cartridge thanks to a pivot or pin 56 whose axis is perpendicular to this plane, has a free end 57 which penetrates into the elongated opening 46 of the door contact 39 so as to be able to cooperate with the second bearing surface 47, and a central portion 58 placed opposite one end 59 of the striker; a return spring 60 is associated with this transmission lever to hold it elastically against a fixed stop 61 in a rest position R which is that shown in FIG. 2.

Le levier de verrouillage 53 oscille autour d'un pivot 62 dont l'axe YY' est parallèle au plan médian PP' ou passe par celui-ci; cet axe YY' est sensiblement perpendiculaire à l'axe VV' de la bobine. Un ressort de rappel 63, placé par exemple autour du pivot 62, communique à ce levier de verrouillage 53 un couple K de sens antihoraire, visible en particulier à la fig. 3, qui lui fait appliquer une première extrémité 64 contre une face latérale 65 du levier de transmission et qui donne à une seconde extrémité 66 du levier de verrouillage 53, extérieure au second volume, une position particulière I.The locking lever 53 oscillates around a pivot 62 whose axis YY 'is parallel to the median plane PP' or passes through it; this axis YY 'is substantially perpendicular to the axis VV' of the coil. A return spring 63, placed for example around the pivot 62, communicates to this locking lever 53 a torque K counterclockwise, visible in particular in FIG. 3, which makes it apply a first end 64 against a lateral face 65 of the transmission lever and which gives a second end 66 of the locking lever 53, outside the second volume, a particular position I.

On remarque que le levier de transmission 52 est placé entre le premier volume 29 et la bobine 50, et que l'extrémité extérieure 44 du porte-contact faisant office de poussoir se déplace au voisinage de la seconde branche 28 de la cartouche dans une région 75 opposée à la chambre de coupure 30, tandis que l'extrémité extérieure 66 du levier de verrouillage 53 se déplace à l'extrémité de cette seconde branche 28 dans une région 76 également opposée à la chambre de coupure.Note that the transmission lever 52 is placed between the first volume 29 and the coil 50, and that the outer end 44 of the contact carrier acting as a pusher moves in the vicinity of the second branch 28 of the cartridge in a region 75 opposite the breaking chamber 30, while the outer end 66 of the locking lever 53 moves at the end of this second branch 28 in a region 76 also opposite the breaking chamber.

La cartouche 23 est de préférence réalisée par l'association de deux demi-boîtiers isolants 67 et 68 (voir fig. 3) qui sont appliqués l'un sur l'autre le long d'un plan de joint confondu avec le plan médian PP' et sont maintenus en contact soit par des crochets élastiques venant de moulage avec les demi-boîtiers, soit par des pinces métalliques extérieures, soit encore par des rivets.The cartridge 23 is preferably produced by the association of two insulating half-housings 67 and 68 (see fig. 3) which are applied one on the other along a joint plane coincident with the median plane PP 'and are kept in contact either by elastic hooks coming from molding with the half-housings, or by external metal clamps, or even by rivets.

Lorsque l'interupteur doit être ouvert et mis en position 0 (voir fig. 7), le porte-contact 39 reçoit sur sa première surface d'appui 45 une poussée de sens F qui lui est donnée par une pièce 8, 18 du dispositif de commande mécanique 7 ou électromagnétique 17; grâce à un jeu j existant entre l'extrémité 57 du levier de transmission 52 et l'ouverture allongée 46, ce mouvement n'a aucun effet sur ce levier de transmission; l'interrupteur se referme sous l'effet du ressort 41 lorsque cesse l'action sur le porte-contact 39. Lorsque l'interrupteur est en position fermée et qu'un courant très intense circule dans la bobine, le percuteur 51 est attiré par la bobine et la culasse et repousse le levier de transmission 52, contre l'action de son ressort de rappel 60, de sorte que son extrémité 57 exerce sur la seconde surface d'appui 47 une action d'ouverture de sécurité des contacts de l'interrupteur.When the switch must be open and set to position 0 (see fig. 7), the contact carrier 39 receives on its first bearing surface 45 a thrust of direction F which is given to it by a part 8, 18 of the device mechanical control 7 or electromagnetic control 17; thanks to a clearance j existing between the end 57 of the transmission lever 52 and the elongated opening 46, this movement has no effect on this transmission lever; the switch closes under the effect of the spring 41 when the action on the contact carrier 39 ceases. When the switch is in the closed position and a very intense current flows in the coil, the striker 51 is attracted by the coil and the cylinder head and pushes back the transmission lever 52, against the action of its spring return 60, so that its end 57 exerts on the second bearing surface 47 a safety opening action of the contacts of the switch.

Dès que le levier de transmission atteint ou dépasse une position de travail T, visible aux fig. 4 et 5, pour laquelle ce courant aura été suffisamment limité, l'extrémité interne 64 du levier de verrouillage passe au-dessus d'un bord 69 du levier de transmission 52 pour le maintenir dans cette position T où l'interrupteur est maintenant à l'état ouvert de sécurité S.As soon as the transmission lever reaches or exceeds a working position T, visible in fig. 4 and 5, for which this current has been sufficiently limited, the internal end 64 of the locking lever passes over an edge 69 of the transmission lever 52 to maintain it in this position T where the switch is now at open security state S.

Au cours de cette opération, le levier de verrouillage 53 prend une position active A, visible à la fig. 5, sous l'effet de son ressort de rappel 63.During this operation, the locking lever 53 takes an active position A, visible in FIG. 5, under the effect of its return spring 63.

Le déplacement de l'extrémité extérieure 66 de ce levier de verrouillage est utilisé soit pour confirmer l'ouverture de l'interrupteur 3, 13 par une action mécanique fournie par le dispositif 7, 8 de la fig. 1 a, soit pour ouvrir, directement ou non, l'interrupteur 20 de l'électro-aimant de commande 17, 18, le tout par l'intermédiaire d'une pièce de transmission telle que 90 (fig. 8).The displacement of the outer end 66 of this locking lever is used either to confirm the opening of the switch 3, 13 by a mechanical action provided by the device 7, 8 of FIG. 1a, either to open, directly or not, the switch 20 of the control electromagnet 17, 18, all by means of a transmission part such as 90 (fig. 8).

Dans les deux cas, une signalisation particulière peut être délivrée pour informer le personnel de maintenance que l'ouverture automatique est due à l'apparition d'un courant de court-circuit.In both cases, a specific signal can be issued to inform maintenance personnel that the automatic opening is due to the appearance of a short-circuit current.

Ainsi qu'on le voit en particulier à la fig. 4, on peut prendre des mesures pour que la coopération entre les pièces mobiles placées dans le second volume 48 s'effectue dans de bonnes conditions. C'est ainsi que la butée 61 du levier de transmission 52 et le pivot 62 du levier de verrouillage 53 sont portés tous deux par la culasse 49 dont une douille cylindrique 70 sert à guider le percuteur 51.As seen in particular in FIG. 4, measures can be taken so that the cooperation between the moving parts placed in the second volume 48 takes place under good conditions. Thus the stop 61 of the transmission lever 52 and the pivot 62 of the locking lever 53 are both carried by the cylinder head 49, a cylindrical bush 70 of which serves to guide the striker 51.

La cartouche 33 est par ailleurs guidée dans le boîtier de l'appareil qui la reçoit grâce à des rainures 71, 72 parallèles à l'axe ZZ', qui sont placées sur les faces opposées extérieures 73, 74 parallèles au plan porte-contact (fig. 6 et 3).The cartridge 33 is also guided in the housing of the device which receives it by means of grooves 71, 72 parallel to the axis ZZ ', which are placed on the opposite external faces 73, 74 parallel to the contact carrier plane ( fig. 6 and 3).

On constate en particulier, à l'examen des fig. 3 et 5, que la cartouche 23 occupe une faible largeur d, ce qui permet d'en placer plusieurs côte à côte dans des alvéoles parallèles 1',11', d'un appareil 1 ou 11 conçu pour les utiliser, sans pour autant lui donner des dimensions importantes.In particular, on examining FIGS. 3 and 5, that the cartridge 23 occupies a small width d, which makes it possible to place several side by side in parallel cells 1 ′, 11 ′, of an apparatus 1 or 11 designed to use them, without however give it important dimensions.

Le porte-contact 39, représenté dans les figures précédentes et faisant office de poussoir, peut également être remplacé par un autre poussoir 77 pour agir sur un contact mobile à simple coupure 78, visible à la fig. 8, qui est rappelé par un ressort 81 et coopère avec un seul contact fixe 79 d'interrupteur 3.The contact carrier 39, shown in the previous figures and acting as a pusher, can also be replaced by another pusher 77 to act on a movable contact with single break 78, visible in FIG. 8, which is returned by a spring 81 and cooperates with a single fixed contact 79 of switch 3.

Sur cette même figure, on remarque que la cartouche 23 est maintenue dans un alvéole 1', respectivement 11', de l'appareil grâce à la coopération, d'une part, de surfaces telles que 84, 85 avec des parois 86,87 du boîtier 1,11 et, d'autre part, de surfaces telles que 88 avec un couvercle 89 fermant l'alvéole. Dans cette situation, les bornes externes 37 et 55 de la cartouche coopèrent avec les bornes internes 82, 83 du boîtier 1 allant vers les bornes de raccordement 5, 6, respectivement 15, 16, de l'appareil qui la reçoit, tandis que l'extrémité 66 du levier de verrouillage transmet son éventuel déplacement à une pièce de transmission 90 ayant pour but de déclencher le dispositif mécanique 7 ou l'interrupteur de contrôle 21 du dispositif électromagnétique 17.In this same figure, it can be seen that the cartridge 23 is held in a cell 1 ', respectively 11', of the apparatus thanks to the cooperation, on the one hand, of surfaces such as 84, 85 with walls 86.87 the housing 1,11 and, on the other hand, surfaces such as 88 with a cover 89 closing the cell. In this situation, the external terminals 37 and 55 of the cartridge cooperate with the internal terminals 82, 83 of the housing 1 going towards the connection terminals 5, 6, respectively 15, 16, of the device which receives it, while the end 66 of the locking lever transmits its possible displacement to a transmission part 90 whose purpose is to trigger the mechanical device 7 or the control switch 21 of the electromagnetic device 17.

Un réarmement des organes de verrouillage 53 et de transmission 52 est obtenu en communiquant à l'extrémité 66, par des moyens à commande manuelle ou automatique non décrits, un mouvement de sens G (fig. 5).Resetting of the locking 53 and transmission 52 members is obtained by communicating at the end 66, by means of manual or automatic control not described, a movement of direction G (FIG. 5).

Claims (6)

1. A mechanically controlled switch (13, 3) with automatic opening for a protective limiting apparatus (1, 11 ), this apparatus comprising:
- a case (2) ;
- a breaking chamber (30) having fins (31, 32) for fractioning the arcs;
- a power switch placed in this chamber and having at least one fixed contact (33, 34) and one mobile contact (38) which is actuated by a push-button (39) and which is subject to the action of a fixed compression spring (41) tending to apply it against the fixed contact (33, 34);
- a coil (50) which is placed in series in a circuit containing the switch (13, 3) and which is adapted to attract a magnetizable striker (51) when the circuit has a short-circuit current passing therethrough;
- a control device having a mobile part (8,18) which co-operates by pushing with the push-button (39) to move the mobile contact (38), and
- input and output terminals for connecting the switch (13, 3),
this striker (51) co-operating with this push-button (39) so as to move this latter when the striker is attracted and independently of the mobile part (8, 18), and to bring the push-button into a position where a locking device (53) holds the switch (13, 3) in an open safety position, characterized in that the switch (13, 3), the breaking chamber (30), the coil (50) and the striker (51), as well as the locking device (53), are placed in a removable insulating cartridge (23) which is placed in a housing (1', 11') of the apparatus (1,11) and which has externally, on the one hand, two connecting terminals (37, 55) which co-operate with terminals (82, 83) of the protection device not directly connected to the network or to a user apparatus, and between which are placed in series the coil and the switch, and which has, on the other hand, in a region (75) opposite the breaking chamber, one end (44) of the push-button (39), respectively (77), adapted to co-operate with the mobile part (18, 8) of the control device (7, 17) and one end (66) of the locking device (53) adapted to communicate a movement for triggering the control device when this switch is held in the open safety position (S); guide means (71, 72) and holding means (84, 85, 88) being placed on this cartridge for giving to this latter a position ensuring this co-operation and the communication of this movement.
2. The switch according to Claim 1, characterized in that the insulating cartridge (23) is formed by a flat case (23) having two distinct adjacent volumes so as to assume the general shape of an L, in each of the legs (28,27) of which are located a first volume (29) and respectively a second volume (48), the first volume receiving the switch (3, 13) and the breaking chamber (30), whereas the second volume receives the coil (50), the striker (51 ) and the locking device (53).
3. The switch according to Claim 2, characterized in that the outer end (44) of a contact holder (39) or push-button (77) moves parallel to the leg (28) of the cartridge (23) containing the second volume (48) in a region (75) proximate the two legs (27, 28).
4. The switch according to one of Claims 1,2 or 3, characterized in that the locking device comprises a transmission lever (52) with resilient return (60), which rocks in a median plane (PP') of the cartridge about a first pivot (56) and one end of which (57) co-operates with an outer end (44) of the contact holder or push-button (39, 77), and a resilient locking lever (53,63) which rocks about a second pivot (62) whose axis (YY') is parallel to said plane (PP'), this transmission lever being disposed between the first volume (29) and the coil (50) so as to receive the action of the striker (51 ) between the first pivot (56) and the end (57).
5. The switch according to Claim 4, characterized in that the locking lever (53) is placed in the vicinity of the outer end (44) of the contact holder or push-button (39, 77) and has a second end (66) which is opposite the first end (64) and which is placed outwardly in a region (76) of the second leg (28) opposite the breaking chamber (30) so as to communicate a movement to the mechanical (7) or electro-magnetic (17) control device.
6. The switch according to Claim 5, characterized in thatthe first end (64) of the locking lever (62) is resiliently applied against a lateral surface (65) of the transmission lever (52) when this latter is in rest position (R), and passes above an edge (69) of the transmission lever when this latter takes up a working position (T).
EP82402020A 1981-11-09 1982-11-03 Mechanically operated switch with automatic opening Expired EP0079819B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82402020T ATE11712T1 (en) 1981-11-09 1982-11-03 MECHANICALLY ACTUATED SWITCH WITH AUTOMATIC OFF.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120924A FR2516304A1 (en) 1981-11-09 1981-11-09 MECHANICAL CONTROL SWITCH AND AUTOMATIC OPENING
FR8120924 1981-11-09

Publications (3)

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EP0079819A1 EP0079819A1 (en) 1983-05-25
EP0079819B1 true EP0079819B1 (en) 1985-02-06
EP0079819B2 EP0079819B2 (en) 1988-07-27

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EP82402020A Expired EP0079819B2 (en) 1981-11-09 1982-11-03 Mechanically operated switch with automatic opening

Country Status (13)

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US (1) US4470028A (en)
EP (1) EP0079819B2 (en)
JP (1) JPS58108627A (en)
AT (1) ATE11712T1 (en)
BR (1) BR8206475A (en)
CA (1) CA1182501A (en)
DE (1) DE3262239D1 (en)
ES (1) ES8308149A1 (en)
FR (1) FR2516304A1 (en)
HK (1) HK77385A (en)
IN (1) IN158465B (en)
MX (1) MX156132A (en)
SG (1) SG38785G (en)

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Also Published As

Publication number Publication date
FR2516304B1 (en) 1984-01-13
BR8206475A (en) 1983-09-27
FR2516304A1 (en) 1983-05-13
DE3262239D1 (en) 1985-03-21
ES517208A0 (en) 1983-08-01
MX156132A (en) 1988-07-15
ATE11712T1 (en) 1985-02-15
CA1182501A (en) 1985-02-12
EP0079819B2 (en) 1988-07-27
JPS6336097B2 (en) 1988-07-19
ES8308149A1 (en) 1983-08-01
JPS58108627A (en) 1983-06-28
US4470028A (en) 1984-09-04
IN158465B (en) 1986-11-22
SG38785G (en) 1987-07-03
EP0079819A1 (en) 1983-05-25
HK77385A (en) 1985-10-18

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