EP0142404B1 - Switches with a pivotally supported contact arm - Google Patents

Switches with a pivotally supported contact arm Download PDF

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Publication number
EP0142404B1
EP0142404B1 EP84401956A EP84401956A EP0142404B1 EP 0142404 B1 EP0142404 B1 EP 0142404B1 EP 84401956 A EP84401956 A EP 84401956A EP 84401956 A EP84401956 A EP 84401956A EP 0142404 B1 EP0142404 B1 EP 0142404B1
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EP
European Patent Office
Prior art keywords
contact
movable contact
point
active region
action
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Expired
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EP84401956A
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German (de)
French (fr)
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EP0142404A1 (en
Inventor
Jean-Marie Roiatti
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Hager Electro SAS
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Hager Electro SAS
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Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Priority to AT84401956T priority Critical patent/ATE44191T1/en
Publication of EP0142404A1 publication Critical patent/EP0142404A1/en
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Publication of EP0142404B1 publication Critical patent/EP0142404B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts

Definitions

  • the above-mentioned spring not only exerts in a known manner the pressure for applying the active areas of the contacts against one another in position but still tends to separate these active areas from one another during the transition from the working position to the rest position and to keep them apart from one another in the rest position.

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  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Tumbler Switches (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Switches With Compound Operations (AREA)

Abstract

1. A switch comprising, inside a housing (1), at least one movable contact (2) which is held longitudinally on a contact arm (3) adapted to pivot between a working position in which it brings an active region (4) of the movable contact (2) into contact with an active region (5) of a fixed contact (6) with a force determined by the action of a spring (7), and another position in which it holds these two active regions (4, 5) apart from one another, which spring (7) acts at a point of action (P) on the movable contact (2) in such a manner as to urge the latter against the contact arm (3) at two reaction points (Q, R) which are spaced apart from one another on on the movable contact (2), one (Q) of these reaction points being further away and the other (R) being less far away from the active region (4) of the movable contact (2) than the point of action (P), characterized in that the spring (7) is a compression spring which is compressed between the movable contact (2) and the housing (1) and in that the movable contact (2) is held longitudinally on the contact arm (3) by means (19, 20) which are independent of the spring (7).

Description

L'invention est relative aux interrupteurs comprenant, à l'intérieur d'un boîtier, au moins un contact mobile qui est maintenu longitudinalement sur un porte-contact susceptible de basculer entre une position de travail, où il met une zone active du contact mobile en contact avec une zone active d'un contact fixe sous un effort déterminé par l'action d'un ressort, et une autre position où il maintient ces deux zones actives écartées l'une de l'autre, lequel ressort agit en un point d'action sur le contact mobile de façon à solliciter ce dernier contre le porte-contact en deux points de réaction qui sont écartés l'un de l'autre sur le contact mobile, l'un de ces points de réaction étant plus éloigné et l'autre moins éloigné de la zone active que le point d'action. L'invention concerne plus particulièrement, mais non exclusivement, les interrupteurs à coupure automatique et plus particulièrement encore les interrupteurs différentiels.The invention relates to switches comprising, inside a housing, at least one movable contact which is held longitudinally on a contact carrier capable of switching between a working position, where it places an active area of the movable contact in contact with an active zone of a fixed contact under a force determined by the action of a spring, and another position where it maintains these two active zones separated from one another, which spring acts at a point of action on the movable contact so as to urge the latter against the contact carrier at two reaction points which are spaced from one another on the movable contact, one of these reaction points being more distant and the other less distant from the active area than the action point. The invention relates more particularly, but not exclusively, to switches with automatic cut-off and more particularly still to differential switches.

Par "zone active" du contact fixe ou mobile, on entend une zone en saillie, ménagée soit directement par déformation sur le contact considéré, soit plus généralement sur un élément tel qu'un rivet, rapporté sur ce contact.By "active area" of the fixed or mobile contact, is meant a projecting area, formed either directly by deformation on the contact considered, or more generally on an element such as a rivet, attached to this contact.

Par "point" soit d'action, soit de réaction, on veut mettre l'accent sur le caractère local de l'aire par laquelle le ressort agit sur le contact mobile ainsi que de l'aire par laquelle le porte-contact réagit sur celui-ci sans vouloir bien entendu se limiter à l'acceptation purement géométrique du terme "point". C'est ainsi que, sous ce terme, on entend englober par exemple une génératrice perpendiculaire à l'axe de basculement du porte-contact ou une surface engendrée par une telle génératrice, le long d'une courbe directrice de faible longueur.By "point" either of action, or of reaction, one wants to emphasize the local character of the area by which the spring acts on the movable contact as well as of the area by which the contact carrier reacts on without, of course, limiting itself to the purely geometric acceptance of the term "point". This is how, under this term, it is intended to include, for example, a generator perpendicular to the tilting axis of the contact carrier or a surface generated by such a generator, along a short guiding curve.

L'invention a pour but de simplifier la construction de ces interrupteurs, notamment en faisant remplir une fonction supplémentaire au susdit ressort.The object of the invention is to simplify the construction of these switches, in particular by making the above-mentioned spring perform an additional function.

Pour atteindre ce but, l'interrupteur conforme à l'invention est essentiellement caractérisé en ce que le ressort est un ressort de compression qui est comprimé entre le contact mobile et le boîtier et en ce que le contact mobile est maintenu longitudinalement sur le porte-contact par des moyens indépendants du ressort.To achieve this object, the switch according to the invention is essentially characterized in that the spring is a compression spring which is compressed between the movable contact and the housing and in that the movable contact is held longitudinally on the holder. contact by means independent of the spring.

Dans l'interrupteur défini ci-dessus et ainsi qu'il sera expliqué plus en détail ci-après, le susdit ressort non seulement exerce de façon connue la pression d'application des zones actives des contacts l'une contre l'autre en position de travail, mais encore tend à séparer ces zones actives l'une de l'autre au cours du passage de la position de travail à la position de repos et à les maintenir écartées l'une de l'autre à la position de repos.In the switch defined above and as will be explained in more detail below, the above-mentioned spring not only exerts in a known manner the pressure for applying the active areas of the contacts against one another in position but still tends to separate these active areas from one another during the transition from the working position to the rest position and to keep them apart from one another in the rest position.

L'invention va être maintenant décrite plus en détail à l'aide du dessin annexé qui en illustre un mode de réalisation préféré.

  • La figure 1 de ce dessin représente, en élévation schématique, les éléments essentiels de ce mode de réalisation, en position de travail.
  • La figure 2 représente les mêmes éléments que la figure 1, en position de repos.
  • La figure 3 représente les mêmes éléments que la figure 1, en position momentanée de nettoyage de contacts.
  • La figure 4 représente une vue de bout du porte-contact avec coupes partielles passant par l'axe du porte-contact et par son point de réaction.
The invention will now be described in more detail using the appended drawing which illustrates a preferred embodiment.
  • Figure 1 of this drawing shows, in schematic elevation, the essential elements of this embodiment, in the working position.
  • Figure 2 shows the same elements as Figure 1, in the rest position.
  • Figure 3 shows the same elements as Figure 1, in the momentary position of contact cleaning.
  • FIG. 4 represents an end view of the contact carrier with partial sections passing through the axis of the contact carrier and through its reaction point.

L'interrupteur représenté aux figures 1 et 2 comprend un boîtier isolant dont on n'a représenté qu'un élément de paroi 1. A l'intérieur de ce boîtier, un contact mobile 2, en forme de lame, est monté sur un porte-contact 3, en matière isolante, susceptible de basculer, autour d'un axe X, entre une position de travail (figure 1) et une position de repos (figure 2). Dans la position de travail (figure 1), le porte-contact 3 met une zone active 4 du contact mobile 2 en contact avec une zone active 5 d'un contact fixe 6, sous une pression déterminée par l'action d'un ressort de compression hélicoïdal 7. Dans la position de repos (figure 2), le porte-contact 3 maintient les deux zones actives 4, 5 écartées l'une de l'autre. Selon le mode de réalisation représenté, les zones actives, 4 et 5 sont constituées par des surfaces appartenant respectivement à un rivet 8, rapporté sur le contact mobile 2, et à un rivet 9, rapporté sur le contact fixe 6.The switch shown in Figures 1 and 2 comprises an insulating housing of which only one wall element has been shown 1. Inside this housing, a movable contact 2, in the form of a blade, is mounted on a door -contact 3, in insulating material, capable of tilting, around an axis X, between a working position (Figure 1) and a rest position (Figure 2). In the working position (Figure 1), the contact carrier 3 puts an active area 4 of the movable contact 2 in contact with an active area 5 of a fixed contact 6, under a pressure determined by the action of a spring helical compression 7. In the rest position (Figure 2), the contact carrier 3 keeps the two active areas 4, 5 apart from one another. According to the embodiment shown, the active zones 4 and 5 are constituted by surfaces belonging respectively to a rivet 8, attached to the movable contact 2, and to a rivet 9, attached to the fixed contact 6.

Le contact fixe 6 est assujetti au boîtier par des moyens non représentés. Le porte-contact 3 est monté sur le boîtier, par exemple à l'aide de tourillons 10 engagés dans des trous correspondants du boîtier, de façon à pouvoir osciller autour de l'axe X.The fixed contact 6 is secured to the housing by means not shown. The contact carrier 3 is mounted on the housing, for example by means of pins 10 engaged in corresponding holes in the housing, so as to be able to oscillate around the axis X.

Conformément à l'invention, le ressort de compression 7 agit sur le contact mobile 2 en un point P de celui-ci qui est situé sur la même face 11 que la zone active 4 de ce contact mobile 2 de façon à pousser ce dernier contre le porte-contact 3 en deux points Q et R qui sont écartés l'un de l'autre et situés sur l'autre face 12 du contact mobile 2. On désigne par "point d'action" le point P et par "points de réaction" les points Q et R. Le point de réaction Q est plus éloigné de la zone active 4 et le point de réaction R moins éloigné de cette zone active 4 que le point d'action P. En d'autres termes, si l'on néglige l'épaisseur du contact mobile 2, on peut dire que le point d'action est situé entre les points Q et R.According to the invention, the compression spring 7 acts on the movable contact 2 at a point P thereof which is located on the same face 11 as the active area 4 of this movable contact 2 so as to push the latter against the contact carrier 3 at two points Q and R which are spaced from one another and situated on the other face 12 of the movable contact 2. The point P is designated by "action point" and by "points "the Q and R points. The Q reaction point is further away from the active area 4 and the R reaction point less distant from this active area 4 than the action point P. In other words, if we neglect the thickness of the movable contact 2, we can say that the action point is located between points Q and R.

De préférence, le point P est constitué par une déformation du contact mobile 2 en forme de rouleau ou saillie hémicylindrique 15 tandis que les points de réaction Q et R sont matérialisés respectivement par des saillies hémicylindriques 13 et 14 venues de moulage avec le porte-contact 3. Comme montré sur les figures, le point d'action P est situé à peu près à mi-distance des points Q et R, si l'on néglige l'épaisseur du contact mobile 2.Preferably, the point P is constituted by a deformation of the movable contact 2 in the form of a roll or semi-cylindrical projection 15 while the reaction points Q and R are materialized respectively by semi-cylindrical projections 13 and 14 which are molded with the contact carrier 3. As shown in the figures, the action point P is located approximately halfway between points Q and R, if one neglects the thickness of the movable contact 2.

Le ressort de compression 7 prend appui, par une extrémité, sur l'élément de paroi 1 et agit par' son autre extrémité sur le rouleau 15. A cet effet, cette autre extrémité peut être constituée par une spire 16 plus ou moins fermée sur elle-même en anneau.The compression spring 7 bears, at one end, on the wall element 1 and acts by its' other end on the roller 15. For this purpose, this other end can be constituted by a turn 16 more or less closed on itself in a ring.

Le porte-contact 3 est actionné par des moyens (non montrés) qui l'attaquent par un trou 17 ménagé à l'une de ses extrémités, l'ensemble étant tel que le porte-contact 3 soit toujours arrêté alternativement aux deux positions de fin de course représentées. Dans la position de fin de course représentée à la figure 1 (position de travail), où les deux zones actives 4 et 5 sont au contact l'une de l'autre et où le contact mobile 2 touche le porte-contact 3 au point de réaction R le moins éloigné de sa zone active 4, l'ensemble est tel qu'il existe (tout au moins en l'absence d'usure notable des rivets 8 et 9) une course d'usure "a" entre la face 12 du contact mobile 2 et le porte-contact 3 au niveau de l'autre point de réaction P, c'est-à-dire au niveau de la saillie 13.The contact carrier 3 is actuated by means (not shown) which attack it through a hole 17 formed at one of its ends, the assembly being such that the contact carrier 3 is always stopped alternately at the two positions of limit switches shown. In the end position shown in Figure 1 (working position), where the two active zones 4 and 5 are in contact with each other and where the movable contact 2 touches the contact carrier 3 at the point of reaction R the least distant from its active area 4, the assembly is such that there is (at least in the absence of significant wear of the rivets 8 and 9) a wear stroke "a" between the face 12 of the movable contact 2 and the contact carrier 3 at the other reaction point P, that is to say at the projection 13.

De préférence, la lame constituant le contact mobile 2 est contre-coudée, comme représenté sur les figures, entre deux parties rectilignes à peu près parallèles entre elles, à savoir une première partie où sont situés les points d'action P et de réaction Q, R et une deuxième partie où est située la zone active 4, grâce à la présence d'une partie intermédiaire inclinée 18, de façon à accroître l'espace disponible pour le logement du ressort 7.Preferably, the blade constituting the movable contact 2 is bent, as shown in the figures, between two rectilinear parts roughly parallel to each other, namely a first part where the action points P and reaction point Q are located. , R and a second part where the active zone 4 is located, thanks to the presence of an inclined intermediate part 18, so as to increase the space available for housing the spring 7.

Enfin, la distance "b" entre le point de réaction R le moins éloigné de la zone active 4 du contact mobile 2 et le point P est de préférence de l'ordre de la moitié de la distance "c" entre ce même point de réaction R et la susdite zone active 4, ces distances étant mesurées selon la direction longitudinale du contact mobile 2.Finally, the distance "b" between the reaction point R the least distant from the active zone 4 of the movable contact 2 and the point P is preferably of the order of half the distance "c" between this same point of reaction R and the aforesaid active area 4, these distances being measured in the longitudinal direction of the movable contact 2.

Par ailleurs, le porte-contact 3 présente, de part et d'autre des extrémités latérales du bossage formant la zone de réaction R, deux petits bossages 19 orientés vers le bas et pénétrant à assez faible jeu dans deux encoches latérales 20 pratiquées dans la première partie rectiligne du contact 2, à faible distance de la partie inclinée 18. On assure de la sorte une liaison solidarisant sensiblement le porte-contact 3 et le contact 2 dans la direction longitudinale du contact mobile 2.Furthermore, the contact carrier 3 has, on either side of the lateral ends of the boss forming the reaction zone R, two small bosses 19 oriented downwards and penetrating with relatively little play in two lateral notches 20 formed in the first rectilinear part of the contact 2, at a short distance from the inclined part 18. A connection is thus ensured substantially securing the contact carrier 3 and the contact 2 in the longitudinal direction of the movable contact 2.

On obtient ainsi un interrupteur dont le fonctionnement est le suivant. Dans la position de travail représentée à la figure 1, le ressort 7, en agissant au point d'action P, tend à faire tourner le contact mobile 2 autour du point de réaction R dans le sens des aiguilles d'une montre, c'est-à-dire à appliquer la zone active 4 du contact mobile 2 contre la zone active 5 du contact fixe 6 avec une force qui, en raison du rapport existant entre les distances "b" et "c", est de l'ordre de la moitié de la force exercée par le ressort 7 sur le contact mobile 2 au point d'action P. Au niveau du point de réaction Q, il existe la course d'usure "a".A switch is thus obtained, the operation of which is as follows. In the working position shown in Figure 1, the spring 7, acting at the point of action P, tends to rotate the movable contact 2 around the reaction point R in a clockwise direction, c ' that is to say to apply the active area 4 of the movable contact 2 against the active area 5 of the fixed contact 6 with a force which, due to the ratio existing between the distances "b" and "c", is of the order of half the force exerted by the spring 7 on the movable contact 2 at the action point P. At the reaction point Q, there is the wear stroke "a".

Lorsque, partant de la position de travail de la figure 1, on fait basculer le porte-contact 3 dans le sens inverse des aiguilles d'une montre autour de l'axe X, ceci fait se soulever la saillie 14 jusqu'à ce que, sous l'action du ressort 7, le contact mobile 2 vienne toucher le porte-contact 3 non seulement au point de réaction R, mais également au point de réaction Q, les zones actives 4 et 5 étant restées jusqu'ici appuyées l'une sur l'autre par le ressort 7. A partir de cette position intermédiaire où le contact mobile 2 est venu toucher le point de réaction Q, le ressort 7 cesse d'exercer sur le contact mobile 2 un couple tendant à le faire basculer autour du point de réaction R, dans le sens des aiguilles d'une montre. En effet, en exerçant sa poussée entre les points de réaction Q et R sur le contact mobile 2, il solidarise celui-ci avec le porte-contact 3 qui entraîne donc le contact mobile 2 jusqu'à la position de repos représentée à la figure 2.When, starting from the working position of FIG. 1, the contact carrier 3 is tilted anti-clockwise around the X axis, this causes the projection 14 to lift up until , under the action of the spring 7, the movable contact 2 comes to touch the contact carrier 3 not only at the reaction point R, but also at the reaction point Q, the active zones 4 and 5 having hitherto been pressed the one over the other by the spring 7. From this intermediate position where the movable contact 2 has come to touch the reaction point Q, the spring 7 ceases to exert a torque on the movable contact 2 tending to cause it to rock around from the reaction point R, clockwise. Indeed, by exerting its thrust between the reaction points Q and R on the movable contact 2, it secures the latter with the contact carrier 3 which therefore drives the movable contact 2 to the rest position shown in the figure 2.

Lorsque, partant de la position de repos représentée à la figure 2, on fait basculer le porte-contact 3 dans le sens des aiguilles d'une montre, le porte-contact 3 entraîne avec lui le contact mobile 2 jusqu'à la position intermédiaire susvisée où sa zone active 4 vient toucher la zone active 5 du contact fixe 6. On se trouve alors dans la position de la figure 3, sur laquelle on voit que la partie active 4 du contact mobile 2 vient toucher la zone active 5 du contact fixe 6 dans une position légèrement inclinée et décalée vers la gauche, comme on le voit sur cette figure. Puis, lors de la poursuite du mouvement du porte-contact 3, le contact mobile 2, s'écarte du porte-contact 3 au niveau du point de réaction Q et le ressort 7 exerce sur le contact mobile 2 un couple croissant qui tend à le faire tourner dans le sens des aiguilles d'une montre autour du point de réaction R. On se retrouve enfin dans la situation décrite en référence à la figure 1.When, starting from the rest position shown in FIG. 2, the contact carrier 3 is tilted clockwise, the contact carrier 3 drives the movable contact 2 with it to the intermediate position abovementioned where its active zone 4 comes to touch the active zone 5 of the fixed contact 6. We are then in the position of FIG. 3, on which we see that the active part 4 of the movable contact 2 comes to touch the active zone 5 of the contact fixed 6 in a slightly inclined position and shifted to the left, as seen in this figure. Then, during the continuation of the movement of the contact carrier 3, the movable contact 2, moves away from the contact carrier 3 at the reaction point Q and the spring 7 exerts on the movable contact 2 an increasing torque which tends to rotate it clockwise around the reaction point R. Finally, we find ourselves in the situation described with reference to FIG. 1.

On note que pendant cette partie finale du basculement, le point de réaction R continue de descendre, ce qui oblige le contact 2 à se rapprocher de l'horizontale, ce qui force la partie active 4 du contact mobile 2 à riper sur la zone active 5 du contact fixe jusqu'à la position finale de la figure 1, provoquant ainsi chaque fois un auto-nettoyage des zones de contact.It is noted that during this final part of the tilting, the reaction point R continues to descend, which forces the contact 2 to approach the horizontal, which forces the active part 4 of the movable contact 2 to slide on the active area. 5 from the fixed contact to the final position of FIG. 1, thus causing each time a self-cleaning of the contact areas.

L'usure des rivets 8 et 9 se traduit simplement par une diminution de la course d'usure initiale a, sans perturber le fonctionnement de l'interrupteur.The wear of the rivets 8 and 9 simply results in a reduction in the initial wear stroke a, without disturbing the operation of the switch.

Comme on le voit, les rivets de contacts 8, 9 sont situés à l'intérieur d'une chambre de coupure 21 refermée de tous côtés à l'exception d'une ouverture 22 nécessaire pour le débattement de l'extrémité du contact mobile 2 qui porte le rivet 8. Cette chambre 21 contient des armatures 23 capables de créer un champ magnétique de désionisation lors de la séparation des rivets de contact 8, 9.As can be seen, the contact rivets 8, 9 are located inside a breaking chamber 21 closed on all sides except for an opening 22 necessary for the movement of the end of the movable contact 2 which carries the rivet 8. This chamber 21 contains reinforcements 23 capable of creating a magnetic deionization field during the separation of the contact rivets 8, 9.

Conformément à une invention de préférence associée à la combinaison des porte-contact 3, contact mobile 2 et ressort 7, le porte-contact présente, au niveau de l'ouverture 22, une lèvre 24 dont la surface extérieure orientée vers la chambre 21 est cylindrique circulaire centrée sur l'axe de pivotement X. Cette lèvre 24 détermine avec l'extrémité 25 de la paroi de la chambre 21 un passage très étroit 26 présent quelle que soit la position du porte-contact 3, ce qui accroît notablement l'isolation électrique de la chambre 21 et de son contenu par rapport au reste (non vu) de l'interrupteur.According to an invention preferably associated with the combination of contact carriers 3, movable contact 2 and spring 7, the contact carrier has, at the opening 22, a lip 24 whose outer surface oriented towards the chamber 21 is circular cylindrical centered on the pivot axis X. This lip 24 determines with the end 25 of the wall of the chamber 21 a very narrow passage 26 present whatever the position of the contact carrier 3, which significantly increases the electrical insulation of the chamber 21 and its contents relative to the rest (not seen) of the switch.

Il est à noter, qu'outre l'isolation accrue, l'ensemble, agencé conformément à l'invention, du porte-contact 3, du contact mobile 2 et du ressort 7, apporte un accroissement important de la rapidité d'ouverture des contacts.It should be noted that, in addition to the increased insulation, the assembly, arranged in accordance with the invention, of the contact carrier 3, of the movable contact 2 and of the spring 7, brings a significant increase in the speed of opening of the contacts.

Claims (9)

1. A switch comprising, inside a housing (1), at least one movable contact (2) which is held longitudinally on a contact arm (3) adapted to pivot between a working position in which it brings an active region (4) of the movable contact (2) into contact with an active region (5) of a fixed contact (6) with a force determined by the action of a spring (7), and another position in which it holds these two active regions (4, 5) apart from one another, which spring (7) acts at a point of action (P) on the movable contact (2) in such a manner as to urge the latter against the contact arm (3) at two reaction points (Q, R) which are spaced apart from one another on the movable contact (2), one (Q) of these reaction points being further away and the other (R) being less far away from the active region (4) of the movable contact (2) than the point of action (P), characterised in that the spring (7) is a compression spring which is compressed between the movable contact (2) and the housing (1) and in that the movable contact (2) is held longitudinally on the contact arm (3) by means (19, 20) which are independent of the spring (7).
2. A switch according to Claim 1, characterised in that the point of action (P) consists of a deformation of the movable contact (2) in the form of a projection and in that the reaction points (Q, R) are respectively materialized by projections (13, 14) cast integral with the contact arm (3).
3. A switch according to one of Claims 1 and 2, characterised in that the point of action (P) is situated approximately half way between the reaction points (Q, R).
4. A switch according to any one of Claims 1 to 3, characterised in that, in the working position, there is a wearing distance (a) between the movable contact (2) and the contact arm (3), at the level of the reaction point (Q) further away from the active region (4) of the movable contact (2).
5. A switch according to any one of Claims 1 to 4, characterised in that the movable contact (2) consists of a blade elbowed between two rectilinear portions which are substantially parallel to one another, namely a first portion where the point of action (P) and the reaction points (Q, R) are situated and a second portion where the corresponding active region (4) is situated, due to the presence of an inclined intermediate portion (18).
6. A switch according to any one of Claims 1 to 6, characterised in that the distance (b) between the reaction point (R) less far away from the active region (4) of the movable contact (2) and the point of action (P) is of the order of half the distance (c) between this same reaction point (R) and said active region (4).
7. A switch according to any one of Claims 1 to 6, characterised in that the means (19, 20) holding the movable contact (2) on the contact arm (3) are means comprising projections (19) and recesses (20) situated at the level of the reaction point (R) less far away from the active region (4) of the movable contact (2).
8. A switch according to any one of Claims 1 to 7, characterised in that the relative spatial arrangement of the contact arm (3) and of the movable contact (2) causes, during the final portion of travel between the position of first physical contact between the active regions (4, 5) of the contacts (2, 6) and the working position, a slight rocking of the movable contact (2) causing a self-cleaning scraping of the active region (4) of the movable contact and the active region (5) of the fixed contact (6).
9. A switch according to any one of Claims 1 to 8, characterised in that the active contact regions (4, 5) are disposed in a breaking chamber (21) and in that the contact arm (3) comprises, at the level of the opening (22) of said chamber, a cylindrical lip (24) centered on the pivotal axis (X) of the contact arm (3) to define, with the corresponding wall end (25) of the chamber (21), a narrow passage (26) which is present whatever the position of the contact arm (3).
EP84401956A 1983-10-04 1984-10-01 Switches with a pivotally supported contact arm Expired EP0142404B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401956T ATE44191T1 (en) 1983-10-04 1984-10-01 SWITCH WITH SWINGING CONTACT CARRIER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8315783 1983-10-04
FR8315783A FR2552926B1 (en) 1983-10-04 1983-10-04 IMPROVEMENTS ON SWITCHES WITH TILTING CONTACT HOLDER

Publications (2)

Publication Number Publication Date
EP0142404A1 EP0142404A1 (en) 1985-05-22
EP0142404B1 true EP0142404B1 (en) 1989-06-21

Family

ID=9292795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401956A Expired EP0142404B1 (en) 1983-10-04 1984-10-01 Switches with a pivotally supported contact arm

Country Status (4)

Country Link
EP (1) EP0142404B1 (en)
AT (1) ATE44191T1 (en)
DE (1) DE3478774D1 (en)
FR (1) FR2552926B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015110644A1 (en) 2015-07-02 2017-01-05 Phoenix Contact Gmbh & Co. Kg Device for separable electrical connection

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583571B1 (en) * 1985-06-12 1994-02-18 Merlin Et Gerin LOW VOLTAGE CIRCUIT BREAKER WITH IMPROVED CUT.
FR2709205B1 (en) * 1993-08-17 1995-10-20 Merlin Gerin Four-pole differential switch.
DE19948695B4 (en) * 1999-09-30 2009-02-05 Siemens Ag Low-voltage circuit breaker with a movable contact carrier with end-position retaining spring
WO2001024207A1 (en) * 1999-09-30 2001-04-05 Siemens Aktiengesellschaft Low-voltage power circuit breaker comprising a switching chamber and a displaceable contact unit
DE10344652A1 (en) * 2003-09-25 2005-04-28 Siemens Ag Low-voltage circuit breaker with radial contact movement by integration of the contact carrier in the switching shaft
FR2999793A1 (en) * 2012-12-14 2014-06-20 Schneider Electric Ind Sas MOBILE CONTACTS SUPPORT SHAFT IN AN ELECTRIC CURRENT CUTTING APPARATUS, AND CURRENT CUTTING APPARATUS COMPRISING SAME, IN PARTICULAR A CONNECTION CIRCUIT BREAKER.

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
CH179233A (en) * 1935-03-13 1935-08-31 Oerlikon Maschf Contact device for electrical switchgear.
US3286067A (en) * 1963-06-06 1966-11-15 Ite Circuit Breaker Ltd Contact pressure arrangement for circuit breaker mechanism
DE3149375A1 (en) * 1981-12-12 1983-06-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt CONTACT ARRANGEMENT FOR A SELF-SWITCH

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015110644A1 (en) 2015-07-02 2017-01-05 Phoenix Contact Gmbh & Co. Kg Device for separable electrical connection

Also Published As

Publication number Publication date
FR2552926A1 (en) 1985-04-05
DE3478774D1 (en) 1989-07-27
FR2552926B1 (en) 1985-12-27
ATE44191T1 (en) 1989-07-15
EP0142404A1 (en) 1985-05-22

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