EP2304755A1 - Arc extinction cage - Google Patents

Arc extinction cage

Info

Publication number
EP2304755A1
EP2304755A1 EP09769542A EP09769542A EP2304755A1 EP 2304755 A1 EP2304755 A1 EP 2304755A1 EP 09769542 A EP09769542 A EP 09769542A EP 09769542 A EP09769542 A EP 09769542A EP 2304755 A1 EP2304755 A1 EP 2304755A1
Authority
EP
European Patent Office
Prior art keywords
arc
casing
envelope
grooves
cage according
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
EP09769542A
Other languages
German (de)
French (fr)
Other versions
EP2304755B1 (en
Inventor
Loïc Meyer
Antoine Duret
Francis Deckert
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP2304755A1 publication Critical patent/EP2304755A1/en
Application granted granted Critical
Publication of EP2304755B1 publication Critical patent/EP2304755B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H9/362—Mounting of plates in arc chamber

Definitions

  • the present invention relates to arcing extinguishing systems capable of equipping electrical devices for breaking, for example of the circuit-breaker type.
  • This separation can be done voluntarily, using a joystick, or automatically by tilting a mechanical lock when there is a sudden overcurrent or overload on the line.
  • each arc extinguishing cage is perceived as an individualizable component assembled in the housing of the electric switchgear.
  • each component consists of a stack of arc cutting plates inserted in an envelope of insulating material.
  • the electric arc extinguishing cage according to the invention is mainly characterized in that:
  • Trapezoidal grooves are made at the same level in the two inner faces of the side walls of the casing, said grooves opening into the opening of the casing through which are inserted the plates and positioning the abutting plates by cooperation of the crenellations of the casing.
  • lateral guidance with the converging walls of the grooves; trapezoidal orifices passing through the side walls of the envelope are made in every other groove, with a shifting from one wall to the other of the casing, said orifices being delimited on three sides by the grooves, the fourth proximal side of the opening of the casing being parallel to the bottom of the housing corresponding to the groove , and intended to cooperate with the protrusion clipping to block each sheet.
  • One of the main advantages of the cage of the invention compared to its predecessors lies in the fact that the cutting plates can be clipped inside the insulating envelope, the guidance of these sheets being further optimized by grooves and trapezoidal housings.
  • the clipping of the various sheets inside the envelope is therefore made quickly and easily, the direction of insertion being substantially constant, the positioning being performed almost automatically inside the envelope by the configuration of the housings, grooves and orifices.
  • the relative positioning of the two trapezoidal shapes that is to say on the one hand the inner housing and on the other side grooves / orifices, combined with the particular longitudinal dimensions of the cutting plates of arc allow, at the time of insertion of said sheets in the insulating casing, precise guidance which ends in a clipping of one in the other even if the direction of insertion is not exactly in the axis definitive positioning, hence the possibility of automation.
  • a wall of the housing and a wall of the grooves are in the same plane, which further improves the guidance at the time of insertion of the sheets in the envelope.
  • all the arc cutting plates are identical. Since the trapezoidal holes are made in every other groove, with a shifting from one wall to the other of the casing, this simply means that one arc cutting sheet must be turned over before the casing. insert, from so that the clipping protrusion providing one of the lateral guide slots is found alternately on one side or the other.
  • these arc cutting plates are all identical except for the sheet distal from the fixed contact, which is provided with a hooking nose of the arc disposed between the branches of the U.
  • the fixed contact is in fact arranged directly under the cage.
  • the unitary piece forming the terminal is extended by a portion placed at one of the ends of the envelope comprising the fixed contact, which comprises a bow foot sheet in the form of a tab close to the fixed contact cut at the end of the envelope. interior and salient of said portion.
  • the stationary contact is disposed adjacent to an arc sheet, in this case an arc foot plate in one piece with the rest and which, because of its configuration, improves the effect of loop applied to the electric arc.
  • the envelope may then additionally comprise a U-shaped wall that surrounds said cut tab, so as to isolate the arc.
  • the arc extinguishing cage according to the invention is such that its envelope comprises a removable closure cover placed on the side of the connection terminal. This cover closes in a way the housing constituted by the insulating envelope, after insertion of the arc cutting plates.
  • the invention also relates to a line breaking device, for example of the circuit breaker type, and comprising an arc extinguishing cage as described above.
  • FIG. 4 is a side view of said terminal installed in the lower part of an arc extinguishing cage according to the invention.
  • FIG. 5 is a front view of the insulating envelope
  • FIG. 8 is a perspective view of an arc cutting sheet provided with an attachment nose of the arc
  • FIG. 12 shows, in exploded perspective, the insulating envelope, its cover and the terminal incorporating the fixed contact
  • the insulating envelope (1) comprises a stack of arc cutting plates (2), in this case the number of
  • the wall (3 ') comprises in the same manner trapezoidal grooves (8'), one of which is provided with an orifice (9 ').
  • trapezoidal grooves (8, 8 ') for each housing (7'), whereas a through hole (9, 9 ') exists only in a groove (8, 8') On two.
  • these orifices are offset from one side wall (3) to the other side wall (3 '), so that there are never two orifices (9, 9') facing each other.
  • FIG. 11a and 11b being median, they also show clearly the space (E) in which the moving contact (15) moves, represented only in FIG. 11. at.
  • the assembly consisting of the insulating casing (1), the cover (14) and the unitary piece forming a terminal (4), a fixed contact (6) and an arc foot plate (5) is shown in FIG. ), exploded view.
  • This figure shows the existence, in the lower part of the insulating casing (1), of a wall U (16) surrounding the tab (5) forming the base plate of arc.
  • This wall (16) protects the said sheet metal (5) arch.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Discharge Heating (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Cage for extinguishing the electric arc created at the opening between a moving contact (15) and a fixed contact (6) of an electrical interrupter of at least one line of the circuit-breaker type, comprising a stack of arc-dividing laminations (2) inserted in the form of a fan in a casing (1) made of insulating material, each U-shaped lamination (2) then being oriented so as to be approximately perpendicular to the travel of the moving contact (15) pivoting between the branches (10, 10') of the U-shaped laminations. Housings located in the bottom of the casing and trapezoidal grooves/orifices located in the lateral faces of the casing make it possible, in cooperation with excrescences protruding laterally from the laminations, to clip-fasten said laminations in the casing.

Description

Cage d'extinction d'arc Arc extinguishing cage
La présente invention a trait aux systèmes d'extinction d'arcs électriques susceptibles d'équiper les appareils électriques de coupure, par exemple du type disjoncteur.The present invention relates to arcing extinguishing systems capable of equipping electrical devices for breaking, for example of the circuit-breaker type.
Dans ces appareils, des arcs électriques apparaissent à la séparation d'un contact mobile et d'un contact fixe qui établissent la liaison électrique dans une ligne lorsqu'ils sont en position de fermeture au contact l'un de l'autre, et qui la coupent lorsqu'ils sont en position d'ouverture, c'est-à-dire séparés.In these devices, electric arcs appear at the separation of a movable contact and a fixed contact which establish the electrical connection in a line when they are in the closed position in contact with each other, and which cut it when in the open position, that is to say separated.
Cette séparation peut se faire volontairement, à l'aide d'une manette de commande, ou automatiquement par basculement d'une serrure mécanique lorsqu'il se produit une surintensité brutale ou une surcharge sur la ligne.This separation can be done voluntarily, using a joystick, or automatically by tilting a mechanical lock when there is a sudden overcurrent or overload on the line.
Le phénomène de l'arc électrique se produit dans tous les cas, à partir du moment où les contacts fixe et mobile s'écartent l'un de l'autre. Tant que l'arc électrique n'est pas éteint, la ligne n'est pas considérée comme coupée.The phenomenon of the electric arc occurs in all cases, from the moment the fixed and moving contacts deviate from each other. As long as the electric arc is not extinguished, the line is not considered cut off.
Dans les dispositifs existants, l'arc est éteint par des moyens combinant notamment soufflage magnétique et déplacement de l'arc vers au moins une cage d'extinction équipant les appareils et dont la fonction exclusive est de procéder à l'extinction de l'arc. Cette cage comprend en fait un empilement de tôles dites de déionisation qui divise l'arc préalablement allongé jusqu'à ce que la tension nécessaire à son entretien soit supérieure à celle du réseau dans lequel l'appareil est utilisé, entraînant l'extinction définitive de l'arc. Dans l'hypothèse de l'invention, chaque cage d'extinction de l'arc est perçue comme un composant individualisé assemblable dans le boîtier de l'appareil électrique de coupure. Dans ce cas, chaque composant se compose d'un empilement de tôles de sectionnement d'arc inséré dans une enveloppe en matériau isolant. Dans la configuration de l'invention, ces tôles présentent une forme en U de sorte que le contact mobile puisse pivoter entre les branches du U. Par ailleurs, toujours dans l'hypothèse de l'invention, ces tôles sont insérées dans leurs enveloppes isolantes en éventail, de sorte qu'elles soient orientées sensiblement perpendiculairement à la course du contact mobile pivotant, lorsqu'il arrive à leur niveau. La fabrication du composant constituant la cage d'extinction d'arc, en particulier l'enfichage des tôles dans l'enveloppe, s'avère compliquée et peu compatible avec les exigences classiques de l'industrialisation, au premier chef desquelles se trouve l'automatisation. La cage d'extinction d'arc selon l'invention a été optimisée de manière à permettre d'automatiser sa fabrication dans de bonnes conditions, eu égard aux exigences industrielles classiques.In existing devices, the arc is extinguished by means including magnetic blow molding and movement of the arc to at least one extinguishing cage equipping the devices and whose exclusive function is to extinguish the arc. . This cage comprises in fact a stack of so-called deionization plates which divides the previously elongated arc until the voltage necessary for its maintenance is greater than that of the network in which the apparatus is used, resulting in the permanent extinction of the arc. In the hypothesis of the invention, each arc extinguishing cage is perceived as an individualizable component assembled in the housing of the electric switchgear. In this case, each component consists of a stack of arc cutting plates inserted in an envelope of insulating material. In the configuration of the invention, these sheets have a U-shape so that the movable contact can rotate between the branches of the U. Moreover, still in the hypothesis of the invention, these sheets are inserted into their fan-shaped insulating envelopes, so that they are oriented substantially perpendicular to the stroke of the pivoting movable contact, when it reaches their level. The manufacture of the component constituting the arc extinguishing cage, in particular the plugging of the sheets in the envelope, is complicated and not very compatible with the conventional requirements of industrialization, in the first place of which is the automating. The arc extinguishing cage according to the invention has been optimized so as to automate its manufacture under good conditions, with respect to conventional industrial requirements.
A cet effet, la cage d'extinction d'arc électrique selon l'invention, classiquement basée sur une enveloppe isolante dans laquelle sont empilées des tôles de sectionnement d'arc, se caractérise à titre principal en ce que :For this purpose, the electric arc extinguishing cage according to the invention, conventionally based on an insulating envelope in which arc cutting plates are stacked, is mainly characterized in that:
- les tôles de sectionnement présentent sur chaque côté un créneau de guidage latéral, l'un étant muni d'une excroissance de clipsage ;- The cutting plates have on each side a lateral guide slot, one being provided with a clipping protrusion;
- des logements pour les extrémités libres des tôles sont prévus dans l'enveloppe, de part et d'autre de l'espace dans lequel se déplace le contact mobile, lesdits logements présentant en section d'allure parallèle à la course dudit contact une forme de trapèze dont la petite base constitue le fond du logement formant butée axiale à l'insertion des tôles ;- Housing for the free ends of the sheets are provided in the casing, on either side of the space in which the movable contact moves, said housing having in section of parallel shape to the stroke of said contact a shape trapezium whose small base constitutes the bottom of the housing forming axial abutment to the insertion of the sheets;
- des rainures trapézoïdales sont pratiquée au même niveau dans les deux faces internes des parois latérales de l'enveloppe, lesdites rainures débouchant dans l'ouverture de l'enveloppe par laquelle sont insérées les tôles et positionnant les tôles en butée par coopération des créneaux de guidage latéraux avec les parois convergentes des rainures ; - des orifices trapézoïdaux traversant les parois latérales de l'enveloppe sont pratiqués dans une rainure sur deux, avec un décalage d'une paroi à l'autre de l'enveloppe, lesdits orifices étant délimités sur trois côtés par les rainures, le quatrième côté proximal de l'ouverture de l'enveloppe étant d'allure parallèle au fond du logement correspondant à la rainure, et destiné à coopérer avec l'excroissance de clipsage pour bloquer chaque tôle.- Trapezoidal grooves are made at the same level in the two inner faces of the side walls of the casing, said grooves opening into the opening of the casing through which are inserted the plates and positioning the abutting plates by cooperation of the crenellations of the casing. lateral guidance with the converging walls of the grooves; trapezoidal orifices passing through the side walls of the envelope are made in every other groove, with a shifting from one wall to the other of the casing, said orifices being delimited on three sides by the grooves, the fourth proximal side of the opening of the casing being parallel to the bottom of the housing corresponding to the groove , and intended to cooperate with the protrusion clipping to block each sheet.
L'un des avantages principaux de la cage de l'invention par rapport à ses devancières réside dans le fait que les tôles de sectionnement peuvent être clipsées à l'intérieur de l'enveloppe isolante, le guidage de ces tôles étant par ailleurs optimisé par les rainures et les logements trapézoïdaux. Le clipsage des différentes tôles à l'intérieur de l'enveloppe se fait dès lors de manière rapide et aisée, la direction d'insertion étant sensiblement constante, le positionnement étant réalisé quasi automatiquement à l'intérieur de l'enveloppe par la configuration des logements, rainures et orifices. En d'autres termes, le positionnement relatif des deux formes trapézoïdales, c'est-à-dire d'une part du logement intérieur et d'autre part des rainures / orifices latéraux, combinés aux dimensions notamment longitudinales des tôles de sectionnement d'arc permettent, au moment de l'insertion desdites tôles dans l'enveloppe isolante, un guidage précis qui se termine par un clipsage de l'un dans l'autre même si la direction d'insertion n'est pas exactement dans l'axe du positionnement définitif, d'où la possibilité d'automatisation.One of the main advantages of the cage of the invention compared to its predecessors lies in the fact that the cutting plates can be clipped inside the insulating envelope, the guidance of these sheets being further optimized by grooves and trapezoidal housings. The clipping of the various sheets inside the envelope is therefore made quickly and easily, the direction of insertion being substantially constant, the positioning being performed almost automatically inside the envelope by the configuration of the housings, grooves and orifices. In other words, the relative positioning of the two trapezoidal shapes, that is to say on the one hand the inner housing and on the other side grooves / orifices, combined with the particular longitudinal dimensions of the cutting plates of arc allow, at the time of insertion of said sheets in the insulating casing, precise guidance which ends in a clipping of one in the other even if the direction of insertion is not exactly in the axis definitive positioning, hence the possibility of automation.
Selon une possibilité, une paroi du logement et une paroi des rainures sont dans le même plan, ce qui améliore encore le guidage au moment de l'insertion des tôles dans l'enveloppe.According to one possibility, a wall of the housing and a wall of the grooves are in the same plane, which further improves the guidance at the time of insertion of the sheets in the envelope.
Conformément à une première variante de cage selon l'invention, la totalité des tôles de sectionnement d'arc sont identiques. Etant donné que les orifices trapézoïdaux sont pratiqués dans une rainure sur deux, avec un décalage d'une paroi à l'autre de l'enveloppe, cela signifie simplement qu'il faut retourner une tôle de sectionnement d'arc sur deux avant de l'insérer, de sorte que l'excroissance de clipsage munissant un des créneaux de guidage latéral se retrouve alternativement d'un côté ou de l'autre.According to a first cage variant according to the invention, all the arc cutting plates are identical. Since the trapezoidal holes are made in every other groove, with a shifting from one wall to the other of the casing, this simply means that one arc cutting sheet must be turned over before the casing. insert, from so that the clipping protrusion providing one of the lateral guide slots is found alternately on one side or the other.
Selon une configuration un peu différente, ces tôles de sectionnement d'arc sont toutes identiques à l'exception de la tôle distaie du contact fixe, qui est munie d'un nez d'accrochage de l'arc disposé entre des branches du U.According to a slightly different configuration, these arc cutting plates are all identical except for the sheet distal from the fixed contact, which is provided with a hooking nose of the arc disposed between the branches of the U.
Cette caractéristique a pour objectif de maintenir à son minimum l'usure de l'extrémité du contact mobile. Il est à noter que, comme cela sera montré plus en détail dans la suite, le contact fixe est en fait disposé directement sous la cage. La pièce unitaire formant la borne, est prolongée par une portion placée à l'une des extrémités de l'enveloppe comprenant le contact fixe, laquelle comporte une tôle de pied d'arc sous forme d'une patte voisine du contact fixe découpée à l'intérieur et saillant de ladite portion.This feature aims to keep the wear of the end of the moving contact to a minimum. It should be noted that, as will be shown in more detail below, the fixed contact is in fact arranged directly under the cage. The unitary piece forming the terminal, is extended by a portion placed at one of the ends of the envelope comprising the fixed contact, which comprises a bow foot sheet in the form of a tab close to the fixed contact cut at the end of the envelope. interior and salient of said portion.
En d'autres termes, le contact fixe est disposé adjacent à une tôle d'arc, en l'espèce une tôle de pied d'arc d'une seule pièce avec le reste et qui améliore du fait de sa configuration l'effet de boucle appliqué à l'arc électrique.In other words, the stationary contact is disposed adjacent to an arc sheet, in this case an arc foot plate in one piece with the rest and which, because of its configuration, improves the effect of loop applied to the electric arc.
Selon l'invention, l'enveloppe peut alors au surplus comporter un muret en U qui entoure ladite patte découpée, de manière à isoler l'arc. Enfin, la cage d'extinction d'arc selon l'invention est telle que son enveloppe comporte un couvercle de fermeture amovible placé du côté de la borne de connexion. Ce couvercle ferme en quelque sorte le boîtier constitué par l'enveloppe isolante, après insertion des tôles de sectionnement d'arc.According to the invention, the envelope may then additionally comprise a U-shaped wall that surrounds said cut tab, so as to isolate the arc. Finally, the arc extinguishing cage according to the invention is such that its envelope comprises a removable closure cover placed on the side of the connection terminal. This cover closes in a way the housing constituted by the insulating envelope, after insertion of the arc cutting plates.
L'invention concerne également un appareil de coupure de lignes, par exemple du type disjoncteur, et comportant une cage d'extinction d'arc telle que décrite ci-dessus.The invention also relates to a line breaking device, for example of the circuit breaker type, and comprising an arc extinguishing cage as described above.
Elle va à présent être décrite plus en détail, en référence aux figures annexées, pour lesquelles :It will now be described in more detail, with reference to the appended figures, for which:
- la figure 1 est une vue en perspective d'une cage d'extinction d'arc électrique selon l'invention ; - la figure 2 représente une autre vue en perspective de la même cage, avec trois tôles de sectionnement d'arc inférieur en position d'insertion dans l'enveloppe isolante ;- Figure 1 is a perspective view of an electric arc extinguishing cage according to the invention; - Figure 2 shows another perspective view of the same cage, with three lower arc cutting plates in the insertion position in the insulating envelope;
- la figure 3 montre en perspective la pièce formant borne et intégrant le contact fixe ;- Figure 3 shows in perspective the piece forming a terminal and integrating the fixed contact;
- la figure 4 est une vue de côté de ladite borne installée en partie basse d'une cage d'extinction d'arc selon l'invention ;- Figure 4 is a side view of said terminal installed in the lower part of an arc extinguishing cage according to the invention;
- la figure 5 est une vue de face de l'enveloppe isolante ;FIG. 5 is a front view of the insulating envelope;
- la figure 6 est une vue en perspective de ladite enveloppe ; - la figure 7 représente, en perspective, une tôle de sectionnement d'arc selon l'invention ;FIG. 6 is a perspective view of said envelope; - Figure 7 shows, in perspective, an arc cutting sheet according to the invention;
- la figure 8 est une vue en perspective d'une tôle de sectionnement d'arc munie d'un nez d'accrochage de l'arc ;- Figure 8 is a perspective view of an arc cutting sheet provided with an attachment nose of the arc;
- les figures 9 et 10 représentent deux vues de côté de la cage d'extinction d'arc selon l'invention ;- Figures 9 and 10 show two side views of the arc extinguishing cage according to the invention;
- les figures 11 a et 11 b représentent deux coupes longitudinales médianes des cages d'extinction d'arc munies de leur couvercle d'une part et auxquels est fixée la borne intégrant le contact fixe, respectivement dans l'hypothèse de l'utilisation d'une tôle supérieure à nez d'accrochage et sans cette tôle ;FIGS. 11a and 11b show two median longitudinal sections of the arc extinguishing cages provided with their cover on the one hand and to which is fixed the terminal integrating the fixed contact, respectively assuming the use of an upper sheet with hooking nose and without this sheet;
- la figure 12 montre, en perspective éclatée, l'enveloppe isolante, son couvercle et la borne intégrant le contact fixe ;- Figure 12 shows, in exploded perspective, the insulating envelope, its cover and the terminal incorporating the fixed contact;
- la figure 13 est une vue en coupe AA telle qu'apparaissant en figure 5 ; et - les figures 14 et 15 représentent deux vues en section avec les tôles de sectionnement d'arc de part et d'autre de la ligne de coupe AA.- Figure 13 is a sectional view AA as shown in Figure 5; and - Figures 14 and 15 show two sectional views with the arc cutting plates on either side of the cutting line AA.
En référence à la figure 1 , l'enveloppe isolante (1) comporte un empilement de tôles de sectionnement d'arc (2), en l'espèce au nombre deWith reference to FIG. 1, the insulating envelope (1) comprises a stack of arc cutting plates (2), in this case the number of
9. Ces tôles (2) sont configurées de telle manière qu'elles puissent se clipser par insertion dans le sens de la flèche F (figure 2), notamment par coopération de créneaux de guidage latéraux (voir figures 7 et 8) dans des orifices pratiqués dans les parois latérales (3, 3') de l'enveloppe isolante (1).9. These plates (2) are configured in such a way that they can be clipped by insertion in the direction of the arrow F (FIG. 2), in particular by cooperation of lateral guide slots (see FIGS. 7 and 8) in orifices made in the side walls (3, 3 ') of the insulating envelope (1).
La figure 3 représente une pièce unique (4) formant à la fois borne de connexion et contact fixe (6) et, par l'intermédiaire d'une tôle de conduction d'arc (5), découpée à l'intérieur d'une portion contenant le contact fixe (6), des moyens de s'ajuster à l'extrémité inférieure de l'enveloppe (1).FIG. 3 represents a single piece (4) forming both a connection terminal and a fixed contact (6) and, via an arc conduction plate (5), cut inside a portion containing the fixed contact (6), means for fitting to the lower end of the envelope (1).
L'assemblage relatif de cette borne (4) à l'enveloppe isolante (1 ) apparaît en figure (4). La figure 5 montre les logements (7, 7') des tôles (2) situés de part et d'autre d'un espace libre (E) à l'intérieur duquel se déplace le contact mobile (non représenté) lorsqu'il s'est détaché du contact fixe (6). Ledit contact mobile pivote en fait à l'intérieur de l'espace (E), en restant sensiblement parallèle aux tôles (2). Celles-ci sont empilées en éventail dans l'enveloppe isolante, comme cela apparaît notamment dans les figures 1 et 2. Les logements (7), servant de butée axiale aux tôles de sectionnement d'arc (2), apparaissent plus précisément en figure 6. Le positionnement desdites tôles (2) est également réalisé par des rainures trapézoïdales latérales (8) dont une sur deux comporte un orifice (9) débouchant à l'extérieur de la paroi latérale (3). La paroi (3') comporte de la même manière des rainures trapézoïdales (8') dont une sur deux est munie d'un orifice (9'). En d'autres termes, il existe une rainure trapézoïdale (8, 8') pour chaque logement (7'), alors qu'un orifice traversant (9, 9') n'existe que dans une rainure (8, 8') sur deux. Il est à noter que ces orifices sont décalés d'une paroi latérale (3) à l'autre paroi latérale (3'), de sorte qu'il n'y a jamais deux orifices (9, 9') face à face.The relative assembly of this terminal (4) to the insulating envelope (1) appears in Figure (4). FIG. 5 shows the housings (7, 7 ') of plates (2) located on either side of a free space (E) inside which the moving contact (not shown) moves when it is detached from the fixed contact (6). Said movable contact actually pivots inside the space (E), remaining substantially parallel to the sheets (2). These are fan-stacked in the insulating envelope, as appears in particular in FIGS. 1 and 2. The housings (7) serving as an axial stop for the arc cutting plates (2) appear more precisely in FIG. 6. The positioning of said sheets (2) is also achieved by lateral trapezoidal grooves (8), one of two has an orifice (9) opening out of the side wall (3). The wall (3 ') comprises in the same manner trapezoidal grooves (8'), one of which is provided with an orifice (9 '). In other words, there is a trapezoidal groove (8, 8 ') for each housing (7'), whereas a through hole (9, 9 ') exists only in a groove (8, 8') On two. It should be noted that these orifices are offset from one side wall (3) to the other side wall (3 '), so that there are never two orifices (9, 9') facing each other.
Les tôles (2), telles que représentées en figure 7, sont insérées de manière à aller en butée au fond des logements (7, 7'), les deux branches (10, 10') de la structure en U de ces tôles (2) ménageant entre elles un espace libre (E) permettant le pivotement du contact mobile à l'ouverture. Les tôles (2) présentent sur chaque côté un créneau de guidage latéral (11 , 11 '), dont l'un est muni d'une excroissance de clipsage (12). Cette excroissance (12), en pénétrant dans les orifices (9, 9'), permet le clipsage de chaque tôle dans l'enveloppe isolante (1). Compte tenu du décalage entre les orifices (9, 9'), il est nécessaire de retourner une tôle sur deux de telle sorte que l'excroissance (12) se retrouve alternativement du côté de la paroi latérale (3) et de la paroi latérale (3'). Selon une configuration de cage de l'invention, toutes les tôles de l'empilement sont identiques.The sheets (2), as represented in FIG. 7, are inserted so as to stop at the bottom of the housings (7, 7 '), the two branches (10, 10') of the U-shaped structure of these sheets ( 2) providing between them a free space (E) for pivoting the movable contact to the opening. The plates (2) have on each side a lateral guide slot (11, 11 '), one of which is provided with a clipping protrusion (12). This protrusion (12), penetrating into the orifices (9, 9 '), allows the clipping of each sheet in the insulating envelope (1). Given the offset between the orifices (9, 9 '), it is necessary to turn one sheet over two so that the protrusion (12) is found alternately on the side of the side wall (3) and the side wall. (3 '). According to a cage configuration of the invention, all the sheets of the stack are identical.
Alternativement, la tôle placée tout en haut peut comporter un nez d'accrochage (13) permettant de réduire l'usure du bout du contact mobile. Une telle tôle est montrée en figure 8. Les figures 9 et 10 montrent successivement des vues de la paroi latéraleAlternatively, the sheet placed at the top may include a hooking nose (13) to reduce the wear of the tip of the movable contact. Such a sheet is shown in FIG. 8. FIGS. 9 and 10 show, successively, views of the lateral wall.
(3') et de la paroi latérale (3) permettant de se rendre compte de l'empilement en éventail avec le positionnement relatif de chaque tôle de sectionnement d'arc (2) par rapport aux ouvertures (9, 9'). Ce positionnement relatif sera explicité plus en détail en référence aux figures 13 à 15.(3 ') and the side wall (3) to realize the fan stack with the relative positioning of each arc cutting sheet (2) relative to the openings (9, 9'). This relative positioning will be explained in more detail with reference to FIGS. 13 to 15.
En figure 9, les créneaux (11) avec leur excroissance de clipsage (12) apparaissent dans les orifices (9!). De même, en figure 10, les mêmes créneaux de guidage latéral (11) avec leur excroissance de clipsage (12) apparaissent dans les orifices (9). L'empilement en éventail des tôles de sectionnement d'arc (2) apparaît encore plus clairement dans les figures 11 a et 11 b, la première comportant une tôle supérieure dotée d'une configuration telle que celle qui est montrée en figure 8, avec un nez d'accrochage (13). Il a été mentionné que l'enveloppe isolante (1) comporte un couvercle (14), qui apparaît également sur ces figures. Elles montrent enfin le positionnement relatif précis de la pièce à la borne (4) et contact fixe (6) avec sa patte (5) formant tôle de pied d'arc, disposée sensiblement parallèlement à la tôle de sectionnement d'arc (2) situé immédiatement au-dessus d'elle Les sections faisant l'objet des figures 11a et 11 b étant médianes, elles montrent également bien l'espace (E) dans lequel se déplace le contact mobile (15), représenté uniquement dans la figure 11 a. L'ensemble constitué de l'enveloppe isolante (1), du couvercle (14) et de la pièce unitaire formant borne (4), contact fixe (6) et tôle de pied d'arc (5) est montré en figure (12), en vue éclatée. Cette figure montre l'existence, en partie inférieure de l'enveloppe isolante (1), d'un muret U (16) entourant la patte (5) formant la tôle de pied d'arc. Ce muret (16) permet de protéger ladite tôle (5) de pied d'arc.In FIG. 9, the crenellations (11) with their clipping projection (12) appear in the orifices (9 ! ). Similarly, in Figure 10, the same lateral guide slots (11) with their clipping projection (12) appear in the orifices (9). The fan stacking of the arc cutting plates (2) appears even more clearly in FIGS. 11a and 11b, the first having an upper plate having a configuration such as that shown in FIG. a hooking nose (13). It has been mentioned that the insulating envelope (1) has a cover (14), which also appears in these figures. Finally, they show the precise relative positioning of the workpiece at the terminal (4) and the fixed contact (6) with its tab (5) forming an arch foot, arranged substantially parallel to the arc cutting sheet (2). The sections shown in FIGS. 11a and 11b being median, they also show clearly the space (E) in which the moving contact (15) moves, represented only in FIG. 11. at. The assembly consisting of the insulating casing (1), the cover (14) and the unitary piece forming a terminal (4), a fixed contact (6) and an arc foot plate (5) is shown in FIG. ), exploded view. This figure shows the existence, in the lower part of the insulating casing (1), of a wall U (16) surrounding the tab (5) forming the base plate of arc. This wall (16) protects the said sheet metal (5) arch.
La figure 13, qui est une section au niveau des flèches AA de la figure 5, montre bien le positionnement relatif des logements (7) et des rainures (8) trapézoïdales, comportant le cas échéant des orifices traversants (9). Pour chaque rainure trapézoïdale (8) il existe, dans le prolongement vers l'intérieur, un logement (7). Les parois de ce logement sont également d'allure trapézoïdale, à la mesure de la forme de la rainure correspondanteFigure 13, which is a section at the arrows AA of Figure 5, shows the relative positioning of the housing (7) and grooves (8) trapezoidal, optionally having through holes (9). For each trapezoidal groove (8) there is, in the extension inwards, a housing (7). The walls of this housing are also trapezoidal, to the extent of the shape of the corresponding groove
(8).(8).
Lorsque les tôles de sectionnement (2) sont insérées dans les logements (7), elles viennent en butée au fond de ces logements (7). Leur positionnement précis est donné par coopération entre les créneaux latéraux (11), apparaissant également en section dans la figure 14 et la forme de la rainure (8) trapézoïdale. Les deux grands côtés du trapèze de chaque rainure (8) convergent en fait vers les arêtes de la face frontale intérieure de chaque créneau (11), permettant le positionnement de la tôle (2). L'existence de l'excroissance (12) permet, outre le clipsage au moment de l'entrée, d'empêcher les tôles de ressortir.When the cutting plates (2) are inserted into the housings (7), they abut the bottom of these housings (7). Their precise positioning is given by cooperation between the lateral slots (11), also appearing in section in FIG. 14 and the shape of the trapezoidal groove (8). The two long sides of the trapezium of each groove (8) converge in fact towards the edges of the inner end face of each slot (11), allowing the positioning of the sheet (2). The existence of the protrusion (12) allows, in addition to the clipping at the time of entry, to prevent the sheets out.
On note également, en référence à la figure 15, que l'une des parois de chaque logement (7) est dans le prolongement, c'est-à-dire dans le même plan, que l'une des parois de chaque rainure trapézoïdale (8).It is also noted, with reference to FIG. 15, that one of the walls of each housing (7) is in the extension, that is to say in the same plane, as one of the walls of each trapezoidal groove. (8).
En somme, l'un des grands côtés de chacun des deux trapèzes, celui constituant les rainures (8) et celui constituant les logements (7), est placé dans l'alignement de celui de l'autre. Le positionnement des tôles de sectionnement d'arc (2) est ainsi fermement assuré. In short, one of the long sides of each of the two trapezes, that constituting the grooves (8) and the one constituting the housings (7), is placed in alignment with that of the other. The positioning of the arc cutting plates (2) is thus firmly ensured.

Claims

REVENDICATIONS
1. Cage d'extinction de l'arc électrique qui se crée à l'ouverture entre un contact mobile (15) et un contact fixe (6) d'un appareil électrique de coupure d'au moins une ligne du type disjoncteur, comportant un empilement de tôles de sectionnement d'arc (2) insérées en éventail dans une enveloppe (1) en matériau isolant, chaque tôle (2) présentant une forme en U étant alors orientée sensiblement perpendiculairement à la course du contact mobile (15) pivotant entre les branches (10, 10') des U, caractérisée en ce que :1. Cage extinguishing the electric arc that is created at the opening between a movable contact (15) and a fixed contact (6) of an electrical apparatus for breaking at least one line of the circuit breaker type, comprising a stack of arc-cutting plates (2) fan-shaped in an envelope (1) of insulating material, each U-shaped plate (2) being then oriented substantially perpendicular to the stroke of the movable movable contact (15). between the branches (10, 10 ') of the U, characterized in that:
- les tôles de sectionnement (2) présentent sur chaque côté un créneau (1 1 , 11 ') de guidage latéral, l'un étant muni d'une excroissance (12) de clipsage ;- The cutting plates (2) have on each side a slot (1 1, 11 ') for lateral guidance, one being provided with a protrusion (12) clipping;
- des logements (7, T) pour les extrémités libres des tôles (2) sont prévus dans l'enveloppe (1 ), de part et d'autre de l'espace (E) dans lequel se déplace le contact mobile (15), lesdits logements (7, T) présentant en section d'allure parallèle à la course dudit contact (15) une forme de trapèze dont la petite base constitue le fond du logement (7, T) formant butée axiale à l'insertion des tôles (2) ;- housings (7, T) for the free ends of the sheets (2) are provided in the casing (1), on either side of the space (E) in which the movable contact (15) moves. , said housings (7, T) having in section parallel to the stroke of said contact (15) a trapezoidal shape whose small base constitutes the bottom of the housing (7, T) forming an axial stop at the insertion of the plates (2);
- des rainures trapézoïdales (8, 8') sont pratiquée au même niveau dans les deux faces internes des parois latérales (3, 3') de l'enveloppe (1), lesdites rainures (8, 8') débouchant dans l'ouverture de l'enveloppe (1) par laquelle sont insérées les tôles (2) et positionnant les tôles (2) en butée par coopération des créneaux (11 , 11 ') de guidage latéraux avec les parois convergentes des rainures (8, 8') ;- Trapezoidal grooves (8, 8 ') are made at the same level in the two inner faces of the side walls (3, 3') of the casing (1), said grooves (8, 8 ') opening into the opening of the envelope (1) by which the sheets (2) are inserted and positioning the sheets (2) in abutment by cooperation of the lateral guide slots (11, 11 ') with the converging walls of the grooves (8, 8') ;
- des orifices trapézoïdaux (9, 9') traversant les parois latérales (3, 3') de l'enveloppe (1 ) sont pratiqués dans une rainure (8, 8') sur deux, avec un décalage d'une paroi (3) à l'autre (3') de l'enveloppe (1 ), lesdits orifices (9, 9') étant délimités sur trois côtés par les rainures (8, 8'), le quatrième côté proximal de l'ouverture de l'enveloppe (1 ) étant d'allure parallèle au fond du logement (7, 7') correspondant à la rainure (8, 8'), et destiné à coopérer avec l'excroissance de clipsage (12) pour bloquer la tôle (2).- Trapezoidal orifices (9, 9 ') passing through the side walls (3, 3') of the envelope (1) are formed in one groove (8, 8 ') out of two, with a wall offset (3 ) to the other (3 ') of the envelope (1), said orifices (9, 9') being delimited on three sides by the grooves (8, 8 '), the fourth proximal side of the opening of the casing (1) being parallel to the bottom of the housing (7, 7') corresponding to the groove (8, 8 ') ), and intended to cooperate with the clipping protrusion (12) to block the sheet (2).
2. Cage d'extinction d'arc selon la revendication précédente, caractérisée en ce qu'une paroi du logement (J, 7') et une paroi des rainures (8, 8') sont dans le même plan.2. Arc extinguishing cage according to the preceding claim, characterized in that a housing wall ( J, 7 ') and a wall of the grooves (8, 8') are in the same plane.
3. Cage d'extinction d'arc selon l'une des revendications précédentes, caractérisée en ce que les tôles de sectionnement d'arc (2) sont identiques.Arc extinguishing cage according to one of the preceding claims, characterized in that the arc cutting plates (2) are identical.
4. Cage d'extinction d'arc selon l'une des revendications 1 et 2, caractérisée en ce que les tôles de sectionnement d'arc (2) sont identiques à l'exception de la tôle distale du contact fixe (6) qui est munie d'un nez d'accrochage (13) de l'arc disposé entre ses branches (10, 10').4. Arc extinguishing cage according to one of claims 1 and 2, characterized in that the arc cutting plates (2) are identical except for the distal plate of the fixed contact (6) which is provided with an attachment nose (13) of the arc disposed between its branches (10, 10 ').
5. Cage d'extinction d'arc selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comporte une pièce unitaire (4) formant borne prolongée par une portion placée à l'une des extrémités de l'enveloppe (1) comprenant le contact fixe (6), ladite portion comportant une tôle de pied d'arc sous forme d'une patte (5) voisine du contact fixe (6), découpée à l'intérieur et saillant de ladite portion.5. Arc extinguishing cage according to any one of the preceding claims, characterized in that it comprises a unitary piece (4) forming a terminal extended by a portion placed at one end of the envelope (1). ) comprising the fixed contact (6), said portion comprising an arch foot plate in the form of a lug (5) close to the fixed contact (6), cut inside and protruding from said portion.
6. Cage d'extinction d'arc selon la revendication précédente, caractérisée en ce que l'enveloppe (1 ) comporte un muret (16) en U entourant ladite patte (5) et isolant l'arc.6. Arc extinguishing cage according to the preceding claim, characterized in that the casing (1) comprises a wall (16) U surrounding said lug (5) and insulating the arc.
7. Cage d'extinction d'arc selon l'une quelconque des revendications précédentes, caractérisée en ce que l'enveloppe (1 ) comporte un couvercle de fermeture (14) placé du côté des bornes de connexion. 7. Arc extinguishing cage according to any one of the preceding claims, characterized in that the casing (1) comprises a closure cap (14) placed on the side of the connection terminals.
8. Appareil électrique de coupure de lignes du type disjoncteur, caractérisé en ce qu'il comporte une cage d'extinction d'arc selon les revendications précédentes. Electrical circuit breaker type circuit breaker, characterized in that it comprises an arc extinguishing cage according to the preceding claims.
EP09769542A 2008-06-27 2009-06-26 Arc extinction cage Active EP2304755B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0854363A FR2933230B1 (en) 2008-06-27 2008-06-27 ARC EXTINGUISHING CAGE
PCT/FR2009/051235 WO2009156701A1 (en) 2008-06-27 2009-06-26 Arc extinction cage

Publications (2)

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EP2304755A1 true EP2304755A1 (en) 2011-04-06
EP2304755B1 EP2304755B1 (en) 2012-03-07

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EP (1) EP2304755B1 (en)
JP (1) JP5203509B2 (en)
CN (1) CN102138193B (en)
AT (1) ATE548744T1 (en)
BR (1) BRPI0910151B1 (en)
FR (1) FR2933230B1 (en)
WO (1) WO2009156701A1 (en)

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WO2009156701A1 (en) 2009-12-30
FR2933230A1 (en) 2010-01-01
CN102138193B (en) 2014-01-22
JP5203509B2 (en) 2013-06-05
BRPI0910151B1 (en) 2018-12-04
FR2933230B1 (en) 2010-06-11
ATE548744T1 (en) 2012-03-15
JP2011526059A (en) 2011-09-29
EP2304755B1 (en) 2012-03-07
BRPI0910151A2 (en) 2016-06-14
CN102138193A (en) 2011-07-27

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