EP0455534A1 - Phase-reversal contactor with locking device - Google Patents

Phase-reversal contactor with locking device Download PDF

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Publication number
EP0455534A1
EP0455534A1 EP91401029A EP91401029A EP0455534A1 EP 0455534 A1 EP0455534 A1 EP 0455534A1 EP 91401029 A EP91401029 A EP 91401029A EP 91401029 A EP91401029 A EP 91401029A EP 0455534 A1 EP0455534 A1 EP 0455534A1
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EP
European Patent Office
Prior art keywords
housing
switches
locking
contactor device
opposite
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
EP91401029A
Other languages
German (de)
French (fr)
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EP0455534B1 (en
Inventor
Patrick Morinaud
Jacques Olifant
Raymond Plumeret
André Vergez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Telemecanique Electrique SA
Schneider Electric SE
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Application filed by Telemecanique Electrique SA, Schneider Electric SE filed Critical Telemecanique Electrique SA
Publication of EP0455534A1 publication Critical patent/EP0455534A1/en
Application granted granted Critical
Publication of EP0455534B1 publication Critical patent/EP0455534B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H01H2050/325—Combined electrical and mechanical interlocking, e.g. usually for auxiliary contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/005—Inversing contactors

Definitions

  • the invention relates to an electrical reversing contactor device comprising two systems of electromagnets and two systems of power switches housed in a common housing, also receiving a mechanical locking device capable of preventing simultaneous movement of the moving parts of armature of these two systems, reciprocal locking switches being also arranged in the supply circuits of these electromagnets, to prevent the excitation of that of these two electromagnets which is not concerned.
  • this locking is carried out using auxiliary switches, the contacts of which are placed in series with the coils, these switches being either associated externally with the common housing, or else respectively associated with each of two neighboring contactors when, in the absence of a combined device, two separate contactor devices must be associated with which is a mechanical locking device.
  • the invention therefore proposes to provide a contactor-reversing device whose general constitution responds to that mentioned above, and in which will be carried out a complete integration of electrical and mechanical locking means in order to simplify the task of the fitters and that of the cable operators or that of the personnel maintenance, while improving the overall reliability of this device, and not depriving the user of a pair of switches on auxiliary contact boxes which he might feel the need by associating them with each of the contactors.
  • the locking device uses in a known manner a movable mechanical locking part placed in the housing which can be moved by each of the moving parts of the two electromagnets being placed on either side thereof. , and which also cooperates with two electrical locking switches with opening housed in this housing and actuated by this moving part, one of the terminals of these switches being connected internally by a particular conductor to an input of the coil which it controls .
  • a reversing contactor device visible in FIGS. 1 and 2, comprises a molded case 2 having on either side of a central housing 3 crossed by a median plane RR ′ of the case, two cavities 4, 5 able to receive each a system of power switches with own electromagnetic control 6, respectively 7.
  • Each system comprises an electromagnet such as 8 having a fixed yoke 9, an excitation coil 11, and a movable armature 12 which is coupled to a contact carrier 13 intended to receive movable contacts of power switches 14. Return springs not shown give these frames rest positions remote from the respective cylinder heads.
  • the terminals of the power switches 15, 16, 17; 18, 19, 21 and 22, 23, 24; 25, 26, 27 are arranged in two regions 28, 29 of the front face 31 of the device between which the central housing 3 opens in an intermediate region 20.
  • Each particular contact carrier such as 13a, 13b, see FIG. 1, has a central groove 32a, respectively 32b directed towards the housing 3, the latter being substantially limited by two parallel walls 33, 34 and a complementary wall 35 extending by a central partition 36 placed in the median plane RR ′ parallel to the walls 33, 34.
  • This partition 36 has a notch 37 open towards the front face 31 of the device and visible in FIG. 4, having two opposite parallel edges 38, 39 and a bottom 41 whose center is occupied by a projection 42 being in a medium plane PP ′ common to the moving parts of the two electromagnets and perpendicular to the plane RR ′.
  • This projection 42 is limited by concave and symmetrical curved surfaces 43, 44 which extend on either side of the latter in the plane of the partition 36.
  • the notch is occupied by a movable locking part 30 having in the plane RR ′ where the partition 36 is located a cam surface 40 in the shape of a heart which is limited by two curved surfaces convex 45, 46 intersecting to form an acute vertex 47; moreover, this movable part comprises two lateral protruding circular cheeks 48, 49 which are placed parallel on either side of the plane of the cam and which come to adjust on opposite faces 51, 52 of the partition 36 leading to the 'notch, see Figures 1, 2 and 5, in order to be able to execute oscillatory movements in its plane.
  • this moving part can take are guided, on the one hand, by virtue of the presence on it of these cheeks and, on the other hand, by virtue of the contact with lateral guide surfaces 53, 54 of the cam against the edges 38 , 39 of the opening; these movements are for example communicated to the movable locking part 30 thanks to the presence of two transverse pins 55a, 55b which are projecting in opposite directions and symmetrically with respect to a line ⁇ common to the planes of symmetry RR ′ and PP ′, In order to penetrate respectively into the grooves 32a, respectively 32b, to couple with the corresponding contact carriers 13a, respectively 13b.
  • These pins have parallel axes which each pass substantially through the center of curvature of the convex surfaces 45, respectively 46 from which they are the most distant.
  • this movable locking piece carries two bosses 56a, 56b which are arranged symmetrically with respect to this line ⁇ and which, for certain angular positions, come to apply or not, see FIG. 4, mobile contact pads 57a, 57b against fixed contacts 58a, 58b by means of elastic deformations which they communicate with two flexible blades 59a, 59b at the ends of which these pads are arranged, see FIGS. 6 and 7.
  • These bosses are arranged in planes parallel to the lateral cheeks and externally to those -this. These blades circulate substantially parallel to the plane RR ′, and between them.
  • Each of the switches 60a, 60b each formed by a fixed contact and by a movable contact 57a, 58a, respectively 57b, 58b, is in the closed state when the movable locking piece is in a rest position which is illustrated in Figure 4, and which results from the existence of simultaneous rest states of the two electromagnet systems.
  • This movable locking piece, as well as the two electrical locking switches associated therewith, are placed in the central housing 3 where the partition 36 establishes galvanic isolation and transverse guidance; this housing therefore has, see Figure 2, at least in its region close to the front face, two cells 61a, 61b each receiving a switch as well as input and output terminals 62a, 62b, respectively 63a, 63b.
  • FIGS. 2 and 3 As can be seen physically in FIGS. 2 and 3, and diagrammatically in FIGS.
  • terminals 8 and 9 these terminals belong in pairs 62a, 63a; 62b, 63b to electrical locking circuits, circulating parallel to the electrical circuits traversed by the currents of the power switches going for example from the input terminals 15, 16, 17 to the output terminals 18, 19, 21, and are located on either side of the average plane PP ′.
  • Terminals 71, 72 and, respectively, 73, 74 accessible from the outside represent the connection terminals of the excitation coils associated with the two electromagnets 6, respectively 7.
  • terminals of these locking switches, excitation coils, and these power switches are for example electrically connected by circuits visible in FIGS. 8 and 9.
  • the locking part switches in direction G taking into account the retention action operated by the groove of the armature which is not excited (see Figure 6) , or direction D (see Figure 7), by prohibiting any subsequent movement of the armature belonging to that of these electromagnets which is not excited; this prohibition, which naturally extends to the electrical consequences resulting for example from a shock, is operated thanks to the existence of established mechanical interactions, on the one hand, between the surfaces 43 and 45, respectively 44, 46 and, on the other hand, between surfaces 53 and 38 or respectively 54 and 39, see Figures 6 and 7.
  • the mounting of the electro-mechanical locking system 30; 60a, 60b in its housing 3 is extremely easy due to the proximity of its opening to the front face 31; notches or passages such as 81, 82, see FIG. 11, formed in crosspieces such as 85, 86 and coming from molding with the common housing 21 in half-housings 87, 88 created by the partition 36 make it possible to operate a easy installation in the factory and efficient attachment of serrated extensions such as 83, 84 belonging to the parts of the terminals 62, 63, see FIG. 12. These cross-members also contribute to the stiffening of the partition 36.
  • a front cover 74 visible in FIGS. 1 and 3, makes it possible to close the opening 75 of the housing where it opens onto the front face 31 of the device, and establishes galvanic isolation both thanks to its lateral friction on opposite walls of the device, such as 75, only thanks to the presence of a central rib 74 ′ extending the partition 36.
  • the cavity receiving the locking piece and the switches opens onto a front face 31 of the device.
  • This arrangement provides mounting convenience when the housing 2 or its base, if it has one, have two housings 91, 92 which open in the same direction to each receive an electromagnet system. Each of these housings is closed during the fixing of the cover 93, respectively 94, receiving the power switches 14, their terminals 15 ... 27 and, where appropriate, the corresponding electromagnet armature 13a, respectively 13b .
  • this arrangement makes it possible to easily install flexible connecting conductors or other conductive parts 180, 181, respectively 182, 183 going from the coil 11 to the associated switch 60a, respectively 60b, see FIGS. 10 and 13, and makes it possible to carry out a final control of the electro-mechanical locking device in a convenient manner before the fitting of the cover 74.
  • the coil thus usually exhibits two connection terminals such as 175 , 176; 177, 178.
  • FIG. 17 illustrates, by way of nonlimiting example, an oscillating locking piece 93 at rest, the simplicity of which is similar to the previous one.
  • This part 93 has a sector-shaped clearance 94 opposite the opening 95 of which there are two pins 96, 97 belonging respectively to each of the two frame extensions 98, 99.
  • a movement in direction H of one of these pawns communicates by encountering an edge of the clearance such as 101, an angular movement of direction J to the piece 93 thus bringing its periphery 102 opposite the other pawn, so that the movement in the same direction of the frame associated with the latter is prevented and vice versa using the edge 101a and the periphery 102a.
  • a return spring can be used to give the part 93 a rest position shown.
  • a groove 103 placed in an adjusted manner between two lateral cheeks 104, 105 of the piece 93 to provide, on the one hand, a transverse support and, on the other hand, a bearing effect by the cooperation of a central core 106 with the rounded bottom 107 of a notch 108 placed in a central wall 109 dividing in two a central cavity 110.
  • cheeks are here also equipped with radial bosses such as 111, 112 to cause, as previously, displacements of elastic blades each carrying a movable contact of an opening switch.
  • a drawer 161 sliding on a central partition 162 on which it sits astride and visible in FIG. 19, whose opposite ends 163, 164 are cut in a bevel so as to transform into rectilinear transverse displacements -J- or -K- sliding contacts which they receive from one of the two pins 165, 166, movable in direction F, and belonging respectively to, or integral with, each of the armatures 167, 168.
  • Each of these displacements brings under the pin which has not been moved, an abutment surface 169a, 169b preventing any subsequent movement of the armature to be locked.
  • Two flexible reed switches 171, 172 can here again cooperate with the moving part, in particular with two transverse and opposite cleats such as 173, 174 to each interrupt the supply circuit of the coil which was not energized first .
  • the flexible blades can be used to give the drawer a central rest position which is visible in FIG. 19, see also FIG. 20.
  • this common terminal 130 takes a particular shape 140 which can be produced in a single piece with switch elements 141, 142 one carrying a fixed contact 143, and the other one end of a movable flexible blade 144; in order to avoid the delicate handling which accompanies the use of long flexible wires, each of the cooperating and opposite elements 145, 146 can also be provided with switches, an extension 147, 148 which extends to the vicinity of the associated coil 151, 152 where the end of a coil winding wire can be directly connected to it, for example by soft welding 153, respectively 154.
  • the carcass 156 of the coil 157 has a first terminal 158 which is accessible from the outside of the housing 159 and which is directly connected to one end 155 of the winding, while the second end 161 of this winding is extended (by a flexible or rigid conductor) to an input terminal 162 of the switch 163a, respectively 163b; an output terminal 164 of this same switch is, for its part, electrically connected (by a flexible or rigid conductor) to a second terminal 165 located on the carcass and serving as a wiring relay for an external cable 166a, respectively 166b used for current return.
  • the two second terminals of the coils can also be electrically connected either to each other to receive a single return conductor serving the two coils, or separately if the need arises.
  • All three, or four terminals for connecting the coils will advantageously be arranged on the same external face 167, respectively 168 of the device 1, respectively 160.

Abstract

These means, which include a moving part (30) for mechanical locking, furthermore having surfaces for actuation of locking switches (60a, 60b), are placed substantially in the plane of a median partition (36) on either side of which each of the two contactors of the appliance are arranged; these conductors (181, 182, 183) connect these switches in series with each contactor coil and, with a connection terminal respectively. <??>Such an appliance is used for controlling reversible motors or for motors with star-delta starting. <IMAGE>

Description

L'invention concerne un appareil électrique contacteur inverseur comportant deux systèmes d'électro-aimants et deux systèmes d'interrupteurs de puissance logés dans un boîtier commun, recevant par ailleurs un dispositif de verrouillage mécanique apte à interdire un déplacement simultané des pièces mobiles d'armature de ces deux systèmes, des interrupteurs de verrouillage réciproque étant en outre disposés dans les circuits d'alimentation de ces électro-aimants, pour interdire l'excitation de celui de ces deux électro-aimants qui n'est pas concerné.The invention relates to an electrical reversing contactor device comprising two systems of electromagnets and two systems of power switches housed in a common housing, also receiving a mechanical locking device capable of preventing simultaneous movement of the moving parts of armature of these two systems, reciprocal locking switches being also arranged in the supply circuits of these electromagnets, to prevent the excitation of that of these two electromagnets which is not concerned.

Dans ces appareils qui sont très utilisés soit pour l'alimentation de moteurs polyphasés à deux sens de marche, soit pour celle des démarreurs étoile-triangle, on souhaite fréquemment associer au dispositif de verrouillage mécanique empêchant un mouvement simultané des armatures, un circuit de verrouillage électrique interdisant une excitation simultanée des bobines des deux électro-aimants.In these devices which are widely used either for supplying polyphase motors with two directions of travel, or for that of star-delta starters, it is frequently desired to associate with the mechanical locking device preventing simultaneous movement of the armatures, a locking circuit. electric preventing simultaneous excitation of the coils of the two electromagnets.

Habituellement, on procède à ce verrouillage à l'aide d'interrupteurs auxiliaires dont les contacts sont placés en série avec les bobines, ces interrupteurs étant soit associés extérieurement au boîtier commun, soit encore respectivement associés à chacun de deux contacteurs voisins lorsque, à défaut d'un appareil combiné, on doit associer deux appareils contacteurs distincts entre lesquels se trouve un dispositif de verrouillage mécanique.Usually, this locking is carried out using auxiliary switches, the contacts of which are placed in series with the coils, these switches being either associated externally with the common housing, or else respectively associated with each of two neighboring contactors when, in the absence of a combined device, two separate contactor devices must be associated with which is a mechanical locking device.

Toutefois, le fait d'utiliser pour chaque contacteur, à cette fin de verrouillage électrique, l'un des interrupteurs contenus dans un boîtier de contacts auxiliaires, prive l'utilisateur de deux interrupteurs qui pourraient se révéler utiles pour l'accomplissement d'autres fonctions d'automatisme et/ou de signalisation, tandis qu'une opération de câblage externe doit être systématiquement effectuée.However, the fact of using for each contactor, for this purpose of electrical locking, one of the switches contained in an auxiliary contact box, deprives the user of two switches which could prove useful for the accomplishment of other automation and / or signaling functions, while an external wiring operation must be systematically performed.

Ces dispositifs de verrouillage mécanique font fréquemment appel à deux pièces mobiles dont la conjugaison respective des mouvements avec ceux des armatures donne toute satisfaction lorsque des tolérances de fabrication relativement étroites sont respectées, les probabilités de dérangement ne sont toutefois jamais exclues si l'on tient notamment compte des modifications progressives de leurs cotes au cours d'une fabrication de grande série, qui doit en outre prendre en compte une inévitable usure imputable à leur fonctionnement.These mechanical locking devices frequently use two moving parts, the respective conjugation of the movements with those of the armatures gives complete satisfaction when relatively narrow manufacturing tolerances are respected, the probabilities of disturbance are however never excluded if one takes particular account for gradual changes in their dimensions during mass production, which must also take into account inevitable wear due to their operation.

L'évolution récente que l'on constate dans le domaine concerné résulte des besoins que ressentent les nombreux utilisateurs de moteurs polyphasés, de disposer d'appareils simples à monter et à raccorder, quitte à procéder à un rechange complet lorsque l'un seulement de deux contacteurs est endommagé.The recent developments in the field concerned result from the needs felt by many users of polyphase motors, to have devices that are simple to assemble and connect, even if it means carrying out a complete replacement when only one of two contactors is damaged.

L'invention se propose par suite de fournir un appareil contacteur-inverseur dont la constitution générale répond à celle mentionnée ci-dessus, et dans lequel sera effectuée une intégration complète de moyens électriques et mécaniques de verrouillage afin de simplifier la tâche des monteurs et celle des câbleurs ou celle du personnel de maintenance, tout en améliorant la fiabilité globale de cet appareil, et en ne privant pas l'utilisateur d'une paire d'interrupteurs sur des boîtiers de contacts auxiliaires dont il pourrait ressentir le besoin en les associant à chacun des contacteurs.The invention therefore proposes to provide a contactor-reversing device whose general constitution responds to that mentioned above, and in which will be carried out a complete integration of electrical and mechanical locking means in order to simplify the task of the fitters and that of the cable operators or that of the personnel maintenance, while improving the overall reliability of this device, and not depriving the user of a pair of switches on auxiliary contact boxes which he might feel the need by associating them with each of the contactors.

Selon l'invention, le dispositif de verrouillage utilise de façon connue une pièce mobile de verrouillage mécanique placée dans le boîtier qui peut être déplacée par chacun des équipages mobiles des deux électro-aimants se trouvant placés de part et d'autre de celle-ci, et qui coopère en outre avec deux interrupteurs de verrouillage électrique à ouverture logés dans ce boîtier et actionnés par cette pièce mobile, l'une des bornes de ces interrupteurs étant reliée intérieurement par un conducteur particulier à une entrée de la bobine qu'il contrôle.According to the invention, the locking device uses in a known manner a movable mechanical locking part placed in the housing which can be moved by each of the moving parts of the two electromagnets being placed on either side thereof. , and which also cooperates with two electrical locking switches with opening housed in this housing and actuated by this moving part, one of the terminals of these switches being connected internally by a particular conductor to an input of the coil which it controls .

D'autres objectifs complémentaires, visant soit l'obtention d'un faible encombrement transversal de l'appareil, soit une facilité de montage en usine, soit encore un contrôle aisé, seront atteints grâce à des mesures appropriées.Other complementary objectives, aiming either at obtaining a small transverse dimensions of the apparatus, or an ease of assembly in the factory, or even an easy control, will be achieved by means of appropriate measures.

L'invention, ainsi que des exemples d'application de l'appareil qu'elle concerne, seront mieux compris à la lecture de la description et à l'examen des figures annexées qui l'accompagnent en illustrant :

  • A la figure 1, une vue en coupe de l'appareil par un plan moyen PP′ passant par les deux systèmes d'électro-aimants qu'il utilise ;
  • A la figure 2, une vue de dessus de la figure 1 dans laquelle apparaît le système de verrouillage électro-mécanique et les armatures des deux électro-aimants, grâce à l'enlèvement des porte-contacts et de la face avant de l'appareil ;
  • A la figure 3, une vue de dessus de la figure 1 ;
  • A la figure 4, une vue de côté du système de verrouillage électro-mécanique au repos dans une portion d'appareil dépourvue de ses électro-aimants ;
  • A la figure 5, une vue de dessus locale des éléments mécaniques du système de verrouilllage ;
  • A la figure 6, une vue de côté du système de verrouillage dans l'une de ses positions de travail ;
  • A la figure 7, une vue de côté du système de verrouillage dans une position de travail opposée à la précédente ;
  • Aux figures 8 et 9, deux schémas électriques de branchement d'appareils selon l'invention appliqués à un circuit de commande de moteur à deux sens de marche et, respectivement, à un circuit de démarrage de moteur étoile-triangle ;
  • A la figure 10, une vue en coupe partielle de l'appareil selon l'invention par un plan médian RR′ qui est perpendiculaire au plan moyen PP′ et passe par un logement propre à recevoir le dispositif de verrouillage électro-mécanique ;
  • A la figure 11, une vue de dessus de la région centrale de l'appareil, lorsque les cavités qu'elle comporte sont dépourvues du couvercle et d'un organe d'interverrouillage mécanique ;
  • A la figure 12, une vue en perspective d'un détail de réalisation d'un interrupteur de verrouillage électrique associé à l'organe d'interverrouillage mécanique ;
  • Aux figures 13 et 21, un schéma relatif à un premier mode de raccordement électrique interne entre les bornes de bobines et les interrupteurs de sécurité qui contrôlent leur alimentation en série ;
  • A la figure 14, une coupe simplifiée et partielle d'un second mode de réalisation du boîtier de l'appareil ;
  • A la figure 15, un schéma relatif à un second mode de raccordement électrique interne entre les bornes de bobines et les interrupteurs de sécurité ;
  • A la figure 16, une vue en perspective partielle de conducteurs servant à établir le circuit de la figure 15 ;
  • A la figure 17, une vue en coupe partielle, par un plan médian comparable au plan RR′, d'un deuxième mode de réalisation d'une pièce de verrouillage mécanique ;
  • A la figure 18, une vue partielle de dessus de la pièce de verrouillage selon la figure 17 ;
  • A la figure 19, une vue en coupe partielle, par un plan médian comparable au plan RR′, d'un troisième mode de réalisation d'une pièce de verrouillage mécanique ; et
  • A la figure 20, une vue partielle de dessus de la pièce de verrouillage selon la figure 19.
The invention, as well as examples of application of the apparatus which it relates, will be better understood on reading the description and examining the appended figures which accompany it, illustrating:
  • In Figure 1, a sectional view of the device through a medium plane PP ′ passing through the two electromagnet systems it uses;
  • In FIG. 2, a top view of FIG. 1 in which the electro-mechanical locking system and the armatures of the two electromagnets appear, thanks to the removal of the contact carriers and of the front face of the device. ;
  • In Figure 3, a top view of Figure 1;
  • In FIG. 4, a side view of the electro-mechanical locking system at rest in a portion of the device devoid of its electromagnets;
  • In FIG. 5, a local top view of the mechanical elements of the locking system;
  • In Figure 6, a side view of the locking system in one of its working positions;
  • In Figure 7, a side view of the locking system in a working position opposite to the previous one;
  • In FIGS. 8 and 9, two electrical diagrams for connecting devices according to the invention applied to a motor control circuit with two directions of travel and, respectively, to a star-delta motor start circuit;
  • In Figure 10, a partial sectional view of the apparatus according to the invention by a median plane RR ′ which is perpendicular to the mean plane PP ′ and passes through a housing suitable for receiving the electro-mechanical locking device;
  • In FIG. 11, a top view of the central region of the apparatus, when the cavities which it comprises are devoid of the cover and of a mechanical interlocking member;
  • In Figure 12, a perspective view of a detail of an electrical locking switch associated with the mechanical interlocking member;
  • In Figures 13 and 21, a diagram relating to a first mode of internal electrical connection between the coil terminals and the safety switches which control their supply in series;
  • In Figure 14, a simplified and partial section of a second embodiment of the housing of the device;
  • In FIG. 15, a diagram relating to a second mode of internal electrical connection between the coil terminals and the safety switches;
  • In Figure 16, a partial perspective view of conductors used to establish the circuit of Figure 15;
  • In Figure 17, a partial sectional view, through a median plane comparable to the plane RR ′, of a second embodiment of a mechanical locking part;
  • In Figure 18, a partial top view of the locking piece according to Figure 17;
  • In Figure 19, a partial sectional view, through a median plane comparable to the plane RR ′, of a third embodiment of a mechanical locking part; and
  • In FIG. 20, a partial top view of the locking piece according to FIG. 19.

Un appareil contacteur-inverseur 1, visible aux figures 1 et 2, comprend un boîtier moulé 2 présentant de part et d'autre d'un logement central 3 traversé par un plan médian RR′ du boîtier, deux cavités 4, 5 aptes à recevoir chacune un système d'interrupteurs de puissance à commande électro-magnétique propre 6, respectivement 7.A reversing contactor device 1, visible in FIGS. 1 and 2, comprises a molded case 2 having on either side of a central housing 3 crossed by a median plane RR ′ of the case, two cavities 4, 5 able to receive each a system of power switches with own electromagnetic control 6, respectively 7.

Chaque système comprend un électro-aimant tel que 8 ayant une culasse fixe 9, une bobine d'excitation 11, et une armature mobile 12 qui est accouplée à un porte-contact 13 destiné à recevoir des contacts mobiles d'interrupteurs de puissance 14. Des ressorts de rappel non représentés donnent à ces armatures des positions de repos éloignées des culasses respectives.Each system comprises an electromagnet such as 8 having a fixed yoke 9, an excitation coil 11, and a movable armature 12 which is coupled to a contact carrier 13 intended to receive movable contacts of power switches 14. Return springs not shown give these frames rest positions remote from the respective cylinder heads.

Ainsi qu'on le voit à la figure 3, les bornes des interrupteurs de puissance 15, 16, 17 ; 18, 19, 21 et 22, 23, 24 ; 25, 26, 27 sont disposées dans deux régions 28, 29 de la face avant 31 de l'appareil entre lesquelles débouche le logement central 3 dans une région intermédiaire 20.As seen in Figure 3, the terminals of the power switches 15, 16, 17; 18, 19, 21 and 22, 23, 24; 25, 26, 27 are arranged in two regions 28, 29 of the front face 31 of the device between which the central housing 3 opens in an intermediate region 20.

Chaque porte-contact particulier tel que 13a, 13b, voir la figure 1, présente une rainure centrale 32a, respectivement 32b dirigée vers le logement 3, ce dernier se trouvant sensiblement limité par deux parois parallèles 33, 34 et une paroi complémentaire 35 se prolongeant par une cloison centrale 36 placée dans le plan médian RR′ parallèlement aux parois 33, 34.Each particular contact carrier such as 13a, 13b, see FIG. 1, has a central groove 32a, respectively 32b directed towards the housing 3, the latter being substantially limited by two parallel walls 33, 34 and a complementary wall 35 extending by a central partition 36 placed in the median plane RR ′ parallel to the walls 33, 34.

Cette cloison 36 comporte une échancrure 37 ouverte vers la face avant 31 de l'appareil et visible à la figure 4, ayant deux bords parallèles opposés 38, 39 et un fond 41 dont le centre est occupé par une saillie 42 se trouvant dans un plan moyen PP′ commun aux équipages mobiles des deux électro-aimants et perpendiculaire au plan RR′.This partition 36 has a notch 37 open towards the front face 31 of the device and visible in FIG. 4, having two opposite parallel edges 38, 39 and a bottom 41 whose center is occupied by a projection 42 being in a medium plane PP ′ common to the moving parts of the two electromagnets and perpendicular to the plane RR ′.

Cette saillie 42 est limitée par des surfaces courbes concaves et symétriques 43, 44 qui s'étendent de part et d'autre de celle-ci dans le plan de la cloison 36.This projection 42 is limited by concave and symmetrical curved surfaces 43, 44 which extend on either side of the latter in the plane of the partition 36.

Comme cela apparaît également à la figure 4, l'échancrure est occupée par une pièce mobile de verrouillage 30 présentant dans le plan RR′ où se trouve la cloison 36 une surface de came 40 en forme de coeur qui se trouve limitée par deux surfaces courbes convexes 45, 46 se coupant pour former un sommet aigu 47 ; par ailleurs, cette pièce mobile comporte deux joues latérales débordantes circulaires 48, 49 qui sont parallèlement placées de part et d'autre du plan de la came et qui viennent s'ajuster sur des faces opposées 51, 52 de la cloison 36 aboutissant à l'échancrure, voir figures 1, 2 et 5, afin de pouvoir exécuter des mouvements oscillatoires dans son plan.As also appears in FIG. 4, the notch is occupied by a movable locking part 30 having in the plane RR ′ where the partition 36 is located a cam surface 40 in the shape of a heart which is limited by two curved surfaces convex 45, 46 intersecting to form an acute vertex 47; moreover, this movable part comprises two lateral protruding circular cheeks 48, 49 which are placed parallel on either side of the plane of the cam and which come to adjust on opposite faces 51, 52 of the partition 36 leading to the 'notch, see Figures 1, 2 and 5, in order to be able to execute oscillatory movements in its plane.

Les mouvements que peut prendre cette pièce mobile sont guidés, d'une part, grâce à la présence sur elle de ces joues et, d'autre part, grâce au contact de surfaces de guidage latérales 53, 54 de la came contre les bords 38, 39 de l'ouverture ; ces mouvements sont par exemple communiqués à la pièce mobile de verrouillage 30 grâce à la présence de deux tétons transversaux 55a, 55b qui sont placés en saillie dans des sens opposés et symétriquement par rapport à une ligne Δ commune aux plans de symétrie RR′ et PP′, afin de pénétrer respectivement dans les rainures 32a, respectivement 32b, pour s'accoupler avec les porte-contacts correspondants 13a, respectivement 13b. Ces tétons ont des axes parallèles qui passent chacun sensiblement par le centre de courbure des surfaces convexes 45, respectivement 46 dont ils sont le plus éloignés.The movements that this moving part can take are guided, on the one hand, by virtue of the presence on it of these cheeks and, on the other hand, by virtue of the contact with lateral guide surfaces 53, 54 of the cam against the edges 38 , 39 of the opening; these movements are for example communicated to the movable locking part 30 thanks to the presence of two transverse pins 55a, 55b which are projecting in opposite directions and symmetrically with respect to a line Δ common to the planes of symmetry RR ′ and PP ′, In order to penetrate respectively into the grooves 32a, respectively 32b, to couple with the corresponding contact carriers 13a, respectively 13b. These pins have parallel axes which each pass substantially through the center of curvature of the convex surfaces 45, respectively 46 from which they are the most distant.

Enfin, cette pièce mobile de verrouillage porte deux bossages 56a, 56b qui sont disposés symétriquement par rapport à cette ligne Δ et qui, pour certaines positions angulaires, viennent appliquer ou non, voir figure 4, des pastilles de contact mobile 57a, 57b contre des contacts fixes 58a, 58b grâce à des déformations élastiques qu'ils communiquent à deux lames souples 59a, 59b aux extrémités desquelles sont disposées ces pastilles, voir figures 6 et 7. Ces bossages sont disposés dans des plans parallèles aux joues latérales et extérieurement à celles-ci. Ces lames circulent de façon sensiblement parallèle au plan RR′, et entre elles.Finally, this movable locking piece carries two bosses 56a, 56b which are arranged symmetrically with respect to this line Δ and which, for certain angular positions, come to apply or not, see FIG. 4, mobile contact pads 57a, 57b against fixed contacts 58a, 58b by means of elastic deformations which they communicate with two flexible blades 59a, 59b at the ends of which these pads are arranged, see FIGS. 6 and 7. These bosses are arranged in planes parallel to the lateral cheeks and externally to those -this. These blades circulate substantially parallel to the plane RR ′, and between them.

Chacun des interrupteurs 60a, 60b, formés chacun par un contact fixe et par un contact mobile 57a, 58a, respectivement 57b, 58b, se trouve à l'état de fermeture lorsque la pièce mobile de verrouillage se trouve dans une position de repos qui est illustrée sur la figure 4, et qui résulte de l'existence d'états de repos simultanés des deux systèmes d'électro-aimants.Each of the switches 60a, 60b, each formed by a fixed contact and by a movable contact 57a, 58a, respectively 57b, 58b, is in the closed state when the movable locking piece is in a rest position which is illustrated in Figure 4, and which results from the existence of simultaneous rest states of the two electromagnet systems.

Cette pièce mobile de verrouillage, ainsi que les deux interrupteurs de verrouillage électrique qui lui sont associés, se trouvent placés dans le logement central 3 où la cloison 36 établit un isolement galvanique et un guidage transversal ; ce logement présente donc, voir figure 2, au moins dans sa région proche de la face avant, deux alvéoles 61a, 61b recevant chacun un interrupteur ainsi que des bornes d'entrée et de sortie 62a, 62b, respectivement 63a, 63b. Comme on le voit physiquement aux figures 2 et 3, et schématiquement aux figures 8 et 9, ces bornes appartiennent par paires 62a, 63a ; 62b, 63b à des circuits électriques de verrouillage, circulant parallèlement aux circuits électriques parcourus par les courants des interrupteurs de puissance allant par exemple des bornes d'entrée 15, 16, 17 aux bornes de sortie 18, 19, 21, et se trouvent situées de part et d'autre du plan moyen PP′. Les bornes 71, 72 et, respectivement, 73, 74 accessibles de l'extérieur représentent les bornes de raccordement des bobines d'excitation associées aux deux électro-aimants 6, respectivement 7.This movable locking piece, as well as the two electrical locking switches associated therewith, are placed in the central housing 3 where the partition 36 establishes galvanic isolation and transverse guidance; this housing therefore has, see Figure 2, at least in its region close to the front face, two cells 61a, 61b each receiving a switch as well as input and output terminals 62a, 62b, respectively 63a, 63b. As can be seen physically in FIGS. 2 and 3, and diagrammatically in FIGS. 8 and 9, these terminals belong in pairs 62a, 63a; 62b, 63b to electrical locking circuits, circulating parallel to the electrical circuits traversed by the currents of the power switches going for example from the input terminals 15, 16, 17 to the output terminals 18, 19, 21, and are located on either side of the average plane PP ′. Terminals 71, 72 and, respectively, 73, 74 accessible from the outside represent the connection terminals of the excitation coils associated with the two electromagnets 6, respectively 7.

Dans le cadre d'une application de l'appareil selon l'invention à une commande de moteur triphasé réversible, respectivement à une commande de moteur étoile-triangle, des bornes de ces interrupteurs de verrouillage, des bobines d'excitation, et de ces interrupteurs de puissance, sont par exemple reliées électriquement par des circuits visibles aux figures 8 et 9.In the context of an application of the apparatus according to the invention to a reversible three-phase motor control, respectively to a star-delta motor control, terminals of these locking switches, excitation coils, and these power switches, are for example electrically connected by circuits visible in FIGS. 8 and 9.

Le fonctionnement du système de verrouillage électromécanique 20 s'explique aisément à l'examen des figures 4, 6 et 7.The operation of the electromechanical locking system 20 can easily be explained on examining FIGS. 4, 6 and 7.

Si, à partir d'une position de repos commune aux armatures des électro-aimants, voir figure 4, pour laquelle le sommet 47 de la came se trouve en regard de la saillie 42, des excitations étaient simultanément communiquées par accident aux deux bobines 11a, 11b, ce sommet et cette saillie viendraient en contact en empêchant le déplacement simultané des armatures en sens F.If, from a rest position common to the armatures of the electromagnets, see FIG. 4, for which the apex 47 of the cam is opposite the projection 42, excitations were simultaneously communicated by accident to the two coils 11a , 11b, this vertex and this projection would come into contact preventing the simultaneous displacement of the reinforcements in direction F.

Lorsque l'un des électro-aimants est excité avant l'autre, la pièce de verrouillage bascule en sens G compte tenu de l'action de rétention opérée par la rainure de l'armature qui n'est pas excitée (voir figure 6), ou sens D (voir figure 7), en interdisant tout mouvement ultérieur à l'armature appartenant à celui de ces électro-aimants qui n'est pas excité ; cette interdiction, qui s'étend naturellement aux conséquences électriques résultant par exemple d'un choc, est opérée grâce à l'existence d'interactions mécaniques établies, d'une part, entre les surfaces 43 et 45, respectivement 44, 46 et, d'autre part, entre les surfaces 53 et 38 ou respectivement 54 et 39, voir figures 6 et 7.When one of the electromagnets is excited before the other, the locking part switches in direction G taking into account the retention action operated by the groove of the armature which is not excited (see Figure 6) , or direction D (see Figure 7), by prohibiting any subsequent movement of the armature belonging to that of these electromagnets which is not excited; this prohibition, which naturally extends to the electrical consequences resulting for example from a shock, is operated thanks to the existence of established mechanical interactions, on the one hand, between the surfaces 43 and 45, respectively 44, 46 and, on the other hand, between surfaces 53 and 38 or respectively 54 and 39, see Figures 6 and 7.

Le montage du système de verrouillage électro-mécanique 30 ; 60a, 60b dans son logement 3 est extrêmement aisé en raison de la proximité de son ouverture de la face avant 31 ; des encoches ou couloirs tels que 81, 82, voir figure 11, ménagés dans des traverses telles que 85, 86 et venant de moulage avec le boîtier commun 21 dans des demi-logements 87, 88 créés par la cloison 36 permettent d'opérer une mise en place facile en usine et un accrochage efficace de prolongements dentelés tels que 83, 84 appartenant aux pièces des bornes 62, 63, voir figure 12. Ces traverses concourent, par ailleurs, au raidissement de la cloison 36.The mounting of the electro-mechanical locking system 30; 60a, 60b in its housing 3 is extremely easy due to the proximity of its opening to the front face 31; notches or passages such as 81, 82, see FIG. 11, formed in crosspieces such as 85, 86 and coming from molding with the common housing 21 in half-housings 87, 88 created by the partition 36 make it possible to operate a easy installation in the factory and efficient attachment of serrated extensions such as 83, 84 belonging to the parts of the terminals 62, 63, see FIG. 12. These cross-members also contribute to the stiffening of the partition 36.

Un couvercle avant 74, visible aux figures 1 et 3, permet d'obturer l'ouverture 75 du logement à l'endroit où celle-ci débouche sur la face avant 31 de l'appareil, et établit un isolement galvanique tant grâce à son frottement latéral sur des parois opposées de l'appareil, telles que 75, que grâce à la présence d'une nervure centrale 74′ venant prolonger la cloison 36.A front cover 74, visible in FIGS. 1 and 3, makes it possible to close the opening 75 of the housing where it opens onto the front face 31 of the device, and establishes galvanic isolation both thanks to its lateral friction on opposite walls of the device, such as 75, only thanks to the presence of a central rib 74 ′ extending the partition 36.

Dans le mode de réalisation représenté aux figures 1 à 12, la cavité recevant la pièce de verrouillage et les interrupteurs, débouche sur une face avant 31 de l'appareil. Cette disposition procure une commodité de montage lorsque le boîtier 2 ou son socle s'il en comporte un présentent deux logements 91, 92 qui s'ouvrent dans la même direction pour recevoir chacun un système d'électro-aimant. Chacun de ces logements est obturé lors de la fixation du capot 93, respectivement 94, recevant les interrupteurs de puissance 14, leurs bornes 15...27 et, le cas échéant, l'armature d'électro-aimant correspondante 13a, respectivement 13b.In the embodiment shown in Figures 1 to 12, the cavity receiving the locking piece and the switches, opens onto a front face 31 of the device. This arrangement provides mounting convenience when the housing 2 or its base, if it has one, have two housings 91, 92 which open in the same direction to each receive an electromagnet system. Each of these housings is closed during the fixing of the cover 93, respectively 94, receiving the power switches 14, their terminals 15 ... 27 and, where appropriate, the corresponding electromagnet armature 13a, respectively 13b .

En même temps, cette disposition rend possible une mise en place aisée de conducteurs souples de liaison ou autres pièces conductrices 180, 181, respectivement 182, 183 allant de la bobine 11 à l'interrupteur associé 60a, respectivement 60b, voir figures 10 et 13, et permet d'opérer un contrôle final du dispositif de verrouillage électro-mécanique de façon commode avant la mise en place du couvercle 74. La bobine présente ainsi de façon usuelle deux bornes de raccordement telles que 175, 176 ; 177, 178.At the same time, this arrangement makes it possible to easily install flexible connecting conductors or other conductive parts 180, 181, respectively 182, 183 going from the coil 11 to the associated switch 60a, respectively 60b, see FIGS. 10 and 13, and makes it possible to carry out a final control of the electro-mechanical locking device in a convenient manner before the fitting of the cover 74. The coil thus usually exhibits two connection terminals such as 175 , 176; 177, 178.

Des réalisations, dans lesquelles la cavité recevant la pièce oscillante de verrouillage et les interrupteurs, déboucherait sur une face arrière ou sur une face latérale, entreraient néanmoins dans le cadre de la présente invention dans la mesure où elles permettraient d'accéder aux mêmes avantages de compacité de l'appareil et de clarté de son raccordement, tout en interdisant une manoeuvre frauduleuse ou en la rendant plus malaisée.Achievements, in which the cavity receiving the oscillating locking part and the switches, would lead to a rear face or to a lateral face, would nevertheless fall within the scope of the present invention insofar as they would allow access to the same advantages of compactness of the device and clarity of its connection, while preventing fraudulent operation or making it more difficult.

La came en coeur effectuant le verrouillage mécanique entre les deux armatures de contacteur a été présentée jusqu'ici en raison de qualités propres qui n'excluent nullement dans le cadre de la présente invention, l'utilisation de moyens de verrouillage oscillants simples d'une autre nature. La figure 17 illustre à titre d'exemple non limitatif une pièce de verrouillage oscillante 93 au repos, dont la simplicité s'apparente à la précédente. Cette pièce 93 présente un dégagement en forme de secteur 94 en regard de l'ouverture 95 de laquelle se présentent deux pions 96, 97 appartenant respectivement à chacune des deux prolongements d'armatures 98, 99. On voit clairement qu'un mouvement en sens H d'un de ces pions par exemple 96 communique par rencontre avec un bord du dégagement tel que 101, un mouvement angulaire de sens J à la pièce 93 amenant ainsi sa périphérie 102 en regard de l'autre pion, de sorte que le mouvement dans le même sens de l'armature associée à ce dernier est empêché et inversement à l'aide du bord 101a et de la périphérie 102a. Un ressort de rappel, non représenté, peut être utilisé pour conférer à la pièce 93 une position de repos représentée.The heart-shaped cam effecting the mechanical locking between the two contactor armatures has been presented so far due to its own qualities which in no way exclude in the context of the present invention, the use of simple oscillating locking means of a other nature. FIG. 17 illustrates, by way of nonlimiting example, an oscillating locking piece 93 at rest, the simplicity of which is similar to the previous one. This part 93 has a sector-shaped clearance 94 opposite the opening 95 of which there are two pins 96, 97 belonging respectively to each of the two frame extensions 98, 99. It is clearly seen that a movement in direction H of one of these pawns, for example 96 communicates by encountering an edge of the clearance such as 101, an angular movement of direction J to the piece 93 thus bringing its periphery 102 opposite the other pawn, so that the movement in the same direction of the frame associated with the latter is prevented and vice versa using the edge 101a and the periphery 102a. A return spring, not shown, can be used to give the part 93 a rest position shown.

Comme pour la pièce de verrouillage précédente, on peut également ici utiliser une gorge 103 placée de façon ajustée entre deux joues latérales 104, 105 de la pièce 93 pour procurer, d'une part, un maintien transversal et, d'autre part, un effet de palier par la coopération d'un noyau central 106 avec le fond arrondi 107 d'une encoche 108 placée dans une paroi médiane 109 divisant en deux une cavité 110 centrale.As for the previous locking piece, it is also possible here to use a groove 103 placed in an adjusted manner between two lateral cheeks 104, 105 of the piece 93 to provide, on the one hand, a transverse support and, on the other hand, a bearing effect by the cooperation of a central core 106 with the rounded bottom 107 of a notch 108 placed in a central wall 109 dividing in two a central cavity 110.

Ces joues sont ici également équipées de bossages radiaux tels que 111, 112 pour provoquer comme précédemment des déplacements de lames élastiques portant chacune un contact mobile d'interrupteur à ouverture.These cheeks are here also equipped with radial bosses such as 111, 112 to cause, as previously, displacements of elastic blades each carrying a movable contact of an opening switch.

Parmi les pièces mobiles simples susceptibles d'être utilisées pour opérer un verrouillage mécanique, se trouve également un tiroir 161 coulissant sur une cloison médiane 162 sur laquelle il se trouve à cheval et visible à la figure 19, dont les extrémités opposées 163, 164 sont taillées en biseau de façon à transformer en déplacements transversaux rectilignes -J- ou -K- des contacts glissants qu'ils reçoivent de l'un des deux pions 165, 166, mobiles en sens F, et appartenant respectivement à, ou solidaire de, chacune des armatures 167, 168. Chacun de ces déplacements amène sous le pion qui n'a pas été déplacé, une surface de butée 169a, 169b empêchant tout mouvement ultérieur de l'armature à verrouiller. Deux interrupteurs à lames flexibles 171, 172 peuvent ici encore coopérer avec la pièce mobile, en particulier avec deux taquets transversaux et opposés tels que 173, 174 pour interrompre chacun le circuit d'alimentation de la bobine qui n'a pas été excitée la première. Avantageusement, les lames flexibles peuvent être utilisées pour conférer au tiroir une position de repos centrale qui est visible sur la figure 19, voir aussi figure 20.Among the simple movable parts which can be used to operate a mechanical locking, there is also a drawer 161 sliding on a central partition 162 on which it sits astride and visible in FIG. 19, whose opposite ends 163, 164 are cut in a bevel so as to transform into rectilinear transverse displacements -J- or -K- sliding contacts which they receive from one of the two pins 165, 166, movable in direction F, and belonging respectively to, or integral with, each of the armatures 167, 168. Each of these displacements brings under the pin which has not been moved, an abutment surface 169a, 169b preventing any subsequent movement of the armature to be locked. Two flexible reed switches 171, 172 can here again cooperate with the moving part, in particular with two transverse and opposite cleats such as 173, 174 to each interrupt the supply circuit of the coil which was not energized first . Advantageously, the flexible blades can be used to give the drawer a central rest position which is visible in FIG. 19, see also FIG. 20.

Les conditions posées par l'existence d'un raccordement interne entre les interrupteurs et les bobines associées pourraient également être satisfaites, voir en particulier la figure 14, grâce à l'utilisation d'un couvercle inférieur 118 isolant venant, par exemple, boucher simultanément la cavité 119 de l'embase 121 ouvrant vers la face arrière 122 d'un tel appareil 120, et recouvrir des dégagements tels que 123a, 123b de parois livrant passage à des conducteurs de liaison allant par exemple de la bobine 124 à un interrupteur associé 125. Quoique moins avantageuses, des cavités débouchant sur des faces latérales de l'appareil pourraient également être mises en oeuvre.The conditions posed by the existence of an internal connection between the switches and the associated coils could also be satisfied, see in particular FIG. 14, thanks to the use of an insulating lower cover 118 coming, for example, to plug simultaneously the cavity 119 of the base 121 opening towards the rear face 122 of such an apparatus 120, and covering clearances such as 123a, 123b with walls giving passage to connecting conductors going for example from the coil 124 to an associated switch 125. Although less advantageous, cavities opening onto lateral faces of the device could also be used.

On peut enfin mettre à profit dans un appareil 179 le voisinage immédiat des deux interrupteurs de verrouillage électrique 126, 127 pour, d'une part, relier entre eux à l'intérieur du boîtier les conducteurs de retour 128, 129 des bobines 131, 132, voir figure 15, et pour prolonger cette liaison jusqu'à une unique borne commune 130 placée à l'extérieur du boîtier.Finally, it is possible to take advantage of the immediate vicinity of the two electrical locking switches 126, 127 in a device 179 in order, on the one hand, to connect the return conductors 128, 129 of the coils 131, 132 together inside the housing. , see Figure 15, and to extend this connection to a single common terminal 130 placed outside the housing.

Selon un mode de réalisation avantageux, visible à la figure 16, cette borne commune 130 prend une forme particulière 140 qui peut être réalisée d'une seule pièce avec des éléments d'interrupteurs 141, 142 portant l'un un contact fixe 143, et l'autre une extrémité de lame souple mobile 144 ; afin d'éviter les manipulations délicates qui accompagnent l'utilisation de longs fils souples, on peut également munir chacun des éléments coopérants et opposés 145, 146 des interrupteurs, d'un prolongement 147, 148 qui s'étend jusqu'au voisinage de la bobine associée 151, 152 où l'extrémité d'un fil d'enroulement de bobine peut lui être directement raccordée, par exemple par soudure douce 153, respectivement 154.According to an advantageous embodiment, visible in FIG. 16, this common terminal 130 takes a particular shape 140 which can be produced in a single piece with switch elements 141, 142 one carrying a fixed contact 143, and the other one end of a movable flexible blade 144; in order to avoid the delicate handling which accompanies the use of long flexible wires, each of the cooperating and opposite elements 145, 146 can also be provided with switches, an extension 147, 148 which extends to the vicinity of the associated coil 151, 152 where the end of a coil winding wire can be directly connected to it, for example by soft welding 153, respectively 154.

Si l'on souhaite conserver la méthode de raccordement traditionnelle, impliquant qu'à chaque électro-aimant soient dévolues deux bornes de raccordement propres pour l'excitation de la bobine correspondante, on peut s'orienter également vers un mode de réalisation particulier du circuit passant par une bobine et l'interrupteur qui la contrôle localement, voir le schéma à la figure 21 comparable à celui de la figure 13.If you want to keep the traditional connection method, implying that each electromagnet are devolved two own connection terminals for the excitation of the corresponding coil, one can also turn to a particular embodiment of the circuit passing through a coil and the switch which controls it locally, see the diagram in Figure 21 comparable to that in Figure 13.

Selon ce mode de réalisation 160, la carcasse 156 de la bobine 157 présente une première borne 158 qui est accessible de l'extérieur du boîtier 159 et qui est directement reliée à une extrémité 155 de l'enroulement, tandis que la seconde extrémité 161 de cet enroulement est prolongée (par un conducteur souple ou rigide) jusqu'à une borne d'entrée 162 de l'interrupteur 163a, respectivement 163b ; une borne de sortie 164 de ce même interrupteur est, pour sa part, électriquement reliée (par un conducteur souple ou rigide) à une seconde borne 165 se trouvant disposée sur la carcasse et servant de relais de câblage pour un câble extérieur 166a, respectivement 166b servant pour le retour de courant.According to this embodiment 160, the carcass 156 of the coil 157 has a first terminal 158 which is accessible from the outside of the housing 159 and which is directly connected to one end 155 of the winding, while the second end 161 of this winding is extended (by a flexible or rigid conductor) to an input terminal 162 of the switch 163a, respectively 163b; an output terminal 164 of this same switch is, for its part, electrically connected (by a flexible or rigid conductor) to a second terminal 165 located on the carcass and serving as a wiring relay for an external cable 166a, respectively 166b used for current return.

Les deux secondes bornes des bobines peuvent également être électriquement reliées soit entre elles pour recevoir un unique conducteur de retour servant aux deux bobines, soit de façon séparée si la nécessité s'en fait ressentir.The two second terminals of the coils can also be electrically connected either to each other to receive a single return conductor serving the two coils, or separately if the need arises.

L'ensemble des trois, ou des quatre bornes de raccordement des bobines, sera avantageusement disposé sur une même face externe 167, respectivement 168 de l'appareil 1, respectivement 160.All three, or four terminals for connecting the coils, will advantageously be arranged on the same external face 167, respectively 168 of the device 1, respectively 160.

Il est également possible de construire une carcasse de bobine telle que 156 à la figure 21, dans laquelle les conducteurs 161, 161′ seront représentés tous deux par des pièces conductrices ancrées dans cette carcasse. Une combinaison de cette mesure avec la disposition illustrée par exemple à la figure 16 permettrait de faire jouer à ces pièces le même rôle de support de contact fixe, et respectivement de la lame fixe.It is also possible to construct a coil carcass such as 156 in FIG. 21, in which the conductors 161, 161 ′ will both be represented by conductive parts anchored in this carcass. A combination of this measure with the arrangement illustrated for example in Figure 16 would allow these parts to play the same role of fixed contact support, and respectively of the fixed blade.

Claims (12)

Appareil électrique contacteur inverseur comportant deux systèmes d'électro-aimants et deux systèmes d'interrupteurs de puissance logés dans un boîtier commun, recevant par ailleurs un dispositif de verrouillage mécanique apte à interdire un déplacement simultané des pièces mobile d'armature de ces deux systèmes, des interrupteurs de verrouillage réciproque étant en outre disposés dans les circuits d'alimentation de ces électro-aimants, pour interdire l'excitation de celui de ces deux électro-aimants qui n'est pas concerné,
caractérisé en ce que le dispositif de verrouillage utilise de façon connue une pièce mobile de verrouillage mécanique (30, 161, 93) placée dans le boîtier (2) qui peut être déplacée par chacun des équipages mobiles (13) des deux électro-aimants (6, 7) se trouvant placés de part et d'autre de celle-ci, et qui coopère en outre avec deux interrupteurs de verrouillage électrique à ouverture (60a, 60b) logés dans ce boîtier et actionnés par cette pièce mobile, l'une des bornes (162) de ces interrupteurs étant reliée intérieurement par un conducteur particulier (180) à une entrée de la bobine (11) qu'il contrôle.Electrical reversing contactor device comprising two systems of electromagnets and two systems of power switches housed in a common housing, also receiving a mechanical locking device capable of preventing simultaneous movement of the moving armature parts of these two systems , reciprocal locking switches being also arranged in the supply circuits of these electromagnets, to prevent the excitation of that of these two electromagnets which is not concerned,
characterized in that the locking device uses in a known manner a movable mechanical locking part (30, 161, 93) placed in the housing (2) which can be moved by each of the movable assemblies (13) of the two electromagnets ( 6, 7) being placed on either side thereof, and which further cooperates with two electrical locking switches with opening (60a, 60b) housed in this housing and actuated by this moving part, one terminals (162) of these switches being connected internally by a particular conductor (180) to an input of the coil (11) which it controls. Appareil contacteur inverseur selon la revendication 1,
caractérisé en ce que les deux interrupteurs (60a, 60b), qui sont disposés parallèlement côte à côte, au voisinage d'une face avant (31) du boîtier (2) de l'appareil dans un logement (3), présentent leurs bornes d'entrée respectives (62a, 63b), et leurs bornes de sortie respectives (62b, 63a) de part et d'autre d'une cloison (36) placée dans un plan (PP′) passant par les deux systèmes d'électro-aimants (6) respectivement (7).Reversing contactor device according to claim 1,
characterized in that the two switches (60a, 60b), which are arranged parallel side by side, in the vicinity of a front face (31) of the housing (2) of the device in a housing (3), have their terminals input (62a, 63b), and their respective output terminals (62b, 63a) on either side of a partition (36) placed in a plane (PP ′) passing through the two electro systems -magnets (6) respectively (7). Appareil contacteur inverseur selon la revendication 1,
caractérisé en ce que la pièce mobile de verrouillage (30) présente de façon connue une surface de came (40) en forme de coeur munie de deux ergots opposés (55a, 55b) placés respectivement aux centres de courbures de deux arcs de cercles limitant cette surface, le sommet aigu (47) de cette came venant au repos en regard d'une arête (42) disposée sur une cloison médiane (36) de ce boîtier (2).Reversing contactor device according to claim 1,
characterized in that the movable locking piece (30) has in known manner a heart-shaped cam surface (40) provided with two opposite lugs (55a, 55b) placed respectively at the centers of curvature of two arcs of circles limiting this surface, the acute apex (47) of this cam coming to rest opposite an edge (42) disposed on a central partition (36) of this housing (2). Appareil contacteur inverseur selon la revendication 3,
caractérisé en ce que cette cloison (36) présente un dégagement (37) dont deux bords opposés (38, 39) guident l'oscillation de la pièce mobile (30) et dont deux faces parallèles opposées et contiguës (51, 52) servent de surfaces de guidage pour deux épanouissements parallèles ajustés (48, 49) de cette pièce se trouvant placés de part et d'autre de la came (40).Reversing contactor device according to claim 3,
characterized in that this partition (36) has a clearance (37) of which two opposite edges (38, 39) guide the oscillation of the moving part (30) and of which two opposite and contiguous parallel faces (51, 52) serve as guide surfaces for two adjusted parallel openings (48, 49) of this part being placed on either side of the cam (40). Appareil contacteur inverseur selon les revendications 3 et 4,
caractérisé en ce que la pièce mobile de verrouillage (30) présente deux bossages (56a, 56b) qui sont symétriquement opposés à l'arête (47) de la came (40) et qui appliquent respectivement, à l'état de repos, une lame de contact élastique (56a, 56b) contre une pièce de contact fixe (58a, 58b).Reversing contactor device according to claims 3 and 4,
characterized in that the movable locking piece (30) has two bosses (56a, 56b) which are symmetrically opposite the edge (47) of the cam (40) and which apply respectively, in the rest state, a elastic contact blade (56a, 56b) against a fixed contact piece (58a, 58b). Appareil contacteur inverseur selon l'une des revendications 2 à 5,
caractérisé en ce que des traverses (85, 86, 87, 88) venant de moulage avec le boîtier (2) de l'appareil dans le logement (3) présentent des encoches (81, 82, 83, 84) propres à recevoir les pièces de bornes (62a, 63a, 62b, 63b) appartenant aux interrupteurs de verrouillage (60a, 60b).Reversing contactor device according to one of claims 2 to 5,
characterized in that crosspieces (85, 86, 87, 88) coming from molding with the housing (2) of the device in the housing (3) have notches (81, 82, 83, 84) suitable for receiving the terminal parts (62a, 63a, 62b, 63b) belonging to the locking switches (60a, 60b). Appareil contacteur selon l'une des revendications 1 à 6,
caractérisé en ce que le logement (3) débouche sur une face avant (31) du boîtier (2) de l'appareil (1).Contactor device according to one of Claims 1 to 6,
characterized in that the housing (3) opens onto a front face (31) of the housing (2) of the device (1). Appareil contacteur selon l'une des revendications 1 à 6,
caractérisé en ce que le logement (119) débouche sur une face arrière (122) du boîtier (121) de l'appareil (120).Contactor device according to one of Claims 1 to 6,
characterized in that the housing (119) opens onto a rear face (122) of the housing (121) of the device (120). Appareil contacteur selon l'une des revendications 1, 2 et 7, 8,
caractérisé en ce que la pièce mobile (161) est un tiroir se déplaçant longitudinalement dans le plan de la cloison médiane (162) du logement central, et se trouvant soumis à un effet de centrage en position de repos.Contactor device according to one of claims 1, 2 and 7, 8,
characterized in that the movable part (161) is a drawer moving longitudinally in the plane of the central partition (162) of the central housing, and being subjected to a centering effect in the rest position. Appareil contacteur selon l'une des revendications 1, 2, 7 et 8,
caractérisé en ce que la pièce mobile oscillante (93) présente un secteur en encoche (94) dont deux bords opposés (101a, 101b) sont repoussés par l'un ou l'autre de deux pions (96, 97) liés aux armatures, respectivement porte-contacts, et dont deux portions de périphérie (102a, 102b) sont alors placées en regard de l'un ou l'autre de ces pions.Contactor device according to one of claims 1, 2, 7 and 8,
characterized in that the oscillating moving part (93) has a notched sector (94) of which two opposite edges (101a, 101b) are pushed back by one or the other of two pins (96, 97) linked to the frames, contact carrier respectively, and two periphery portions (102a, 102b) are then placed opposite one or the other of these pins. Appareil contacteur selon l'une des revendications 1 à 10,
caractérisé en ce que les liaisons intérieures (180, 181, 182, 183) sont établies de façon telle que chaque bobine de contacteur présente deux bornes de raccordement (175, 176, 177, 178).Contactor device according to one of Claims 1 to 10,
characterized in that the internal connections (180, 181, 182, 183) are established in such a way that each contactor coil has two connection terminals (175, 176, 177, 178). Appareil contacteur selon l'une des revendications 1 à 10,
caractérisé en ce que les liaisons intérieures (128, 129) des interrupteurs (126, 127) sont reliées à une borne commune (130).Contactor device according to one of Claims 1 to 10,
characterized in that the internal connections (128, 129) of the switches (126, 127) are connected to a common terminal (130).
EP91401029A 1990-04-30 1991-04-18 Phase-reversal contactor with locking device Expired - Lifetime EP0455534B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005560A FR2661548B1 (en) 1990-04-30 1990-04-30 LOCKING INVERTER CONTACTOR APPARATUS.
FR9005560 1990-04-30

Publications (2)

Publication Number Publication Date
EP0455534A1 true EP0455534A1 (en) 1991-11-06
EP0455534B1 EP0455534B1 (en) 1995-06-07

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ID=9396277

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EP91401029A Expired - Lifetime EP0455534B1 (en) 1990-04-30 1991-04-18 Phase-reversal contactor with locking device

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US (1) US5289146A (en)
EP (1) EP0455534B1 (en)
JP (1) JPH0729475A (en)
DE (1) DE69110195T2 (en)
FR (1) FR2661548B1 (en)

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FR2727566A1 (en) * 1994-11-28 1996-05-31 Abb Control Sa ELECTRICAL AND MECHANICAL CONDEMNATION DEVICE FOR CONTACTORS
WO2001024213A1 (en) * 1999-09-27 2001-04-05 Siemens Aktiengesellschaft Contactor arrangement
FR2815171A1 (en) * 2000-10-11 2002-04-12 Abb Control Sa Double action vibration proof electrical motor command having rotating feed contact levers with closing sliding contacts and opening conductor strips free ends rest position contacting.

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US6140896A (en) * 2000-03-10 2000-10-31 Eaton Corporation Electro-mechanical reversing contactor with a single, common base
ES2285536T3 (en) * 2003-10-31 2007-11-16 Lifescan Scotland Ltd METHOD FOR REDUCING THE EFFECT OF A DIRECT INTERFERENCE CURRENT ON AN ELECTROCHEMICAL TEST STRIP.
FR2907963B1 (en) * 2006-10-27 2009-01-09 Abb Entrelec Soc Par Actions S ELECTRICAL CONNECTION MODULE BETWEEN A FIRST AND A SECOND CONTACTOR AND CORRESPONDING INVERTER MOUNTING
EP2107586A1 (en) 2008-04-01 2009-10-07 Siemens Aktiengesellschaft Magnetic chamber for an electromagnetic low voltage switching device and electromagnetic low voltage switching device
JP5504925B2 (en) * 2010-01-29 2014-05-28 富士電機機器制御株式会社 Reversible electromagnetic contactor
US9865416B2 (en) 2016-04-21 2018-01-09 Hartland Controls, Llc Electrical power transfer switch
US10083809B2 (en) 2016-04-21 2018-09-25 Hartland Controls, Llc Electrical power transfer switch
CN111816473B (en) * 2020-09-14 2020-12-11 广东电网有限责任公司东莞供电局 Dual supply divide-shut brake drive conversion equipment
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Also Published As

Publication number Publication date
FR2661548B1 (en) 1992-07-17
DE69110195T2 (en) 1995-09-28
FR2661548A1 (en) 1991-10-31
JPH0729475A (en) 1995-01-31
DE69110195D1 (en) 1995-07-13
EP0455534B1 (en) 1995-06-07
US5289146A (en) 1994-02-22

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