EP2518746B1 - Electrical contact device with efficient cutting - Google Patents

Electrical contact device with efficient cutting Download PDF

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Publication number
EP2518746B1
EP2518746B1 EP12163351.5A EP12163351A EP2518746B1 EP 2518746 B1 EP2518746 B1 EP 2518746B1 EP 12163351 A EP12163351 A EP 12163351A EP 2518746 B1 EP2518746 B1 EP 2518746B1
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EP
European Patent Office
Prior art keywords
contact elements
current
rotation
current paths
contact
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EP12163351.5A
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German (de)
French (fr)
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EP2518746A1 (en
Inventor
Guy Cottone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Legrand SNC
Legrand France SA
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Legrand SNC
Legrand France SA
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Priority to PL12163351T priority Critical patent/PL2518746T3/en
Publication of EP2518746A1 publication Critical patent/EP2518746A1/en
Application granted granted Critical
Publication of EP2518746B1 publication Critical patent/EP2518746B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H2001/2091—Bridging contacts having two pivotally and electrically connected halve bridges

Definitions

  • the invention relates generally to the field of electrical equipment.
  • the invention relates to an electrical contact device, particularly used in a tripping switch disconnector, and comprising at least one fixed contact element, a movable contact element, and first and second rigid and movable current paths. relative to one another, the movable contact element being displaceable with respect to the fixed contact element between a cut-off position preventing the flow of electric current in the first and second current paths, and a position of contact allowing a flow of electric current in the first and second current paths, the movable contact element being rotatably mounted about an axis of rotation, said first current path being rigidly connected in rotation with said movable contact element around of the axis of rotation, and said first and second current paths being electrically connected to each other in a n sense proper to undergo, in case of current flow, an electromagnetic force converted, by rotation of the movable contact element about the axis of rotation, into a bearing force of this movable contact element on the fixed contact element, said axis of rotation being mounted on a support movable relative to the
  • a device of this type is particularly known from the European patent application EP 1 879 204 .
  • this technique can only be as effective as if the first and second current paths, between which the electromagnetic force used to increase the mutual support force of the fixed and mobile contact elements, are both sufficiently long and close enough to each other.
  • the document BE 889 311 A1 discloses a device according to the preamble of claim 1.
  • the invention aims to provide a contact device which, while making the best use of the electromagnetic force developed by the passage of a current to increase the force of mutual support of the fixed and movable contact elements, has a high insulation capacity in the breaking position of the movable contact element.
  • the invention relates to a device according to claim 1. current remains constant when moving the movable contact element relative to the fixed contact element.
  • this electrical contact device comprises a housing to which the fixed contact elements are fixed.
  • the support can advantageously be mounted mobile in translation in the housing.
  • the invention relates to an electrical contact device that can notably be used in a tripping disconnect switch.
  • FIGS. Figures 1 and 2 A known device, of the type of those whose invention aims to improve the breaking performance, is illustrated in FIGS. Figures 1 and 2 .
  • Such a device comprises a fixed contact element 1, a movable contact element 2, and two current paths 31 and 32.
  • the current paths 31 and 32 which are mounted so as to be movable with respect to each other, are both rigid, that is to say not likely to undergo appreciable deformations in normal use. which is made, including within the scope of the present invention.
  • these current paths 31 and 32 are made in the form of rigid metal conductors, for example copper.
  • the movable contact element 2 is movable, relative to the fixed contact element 1, between a cut-off position which is visible on the figure 1 and which prevents the flow of electric current in the current paths 31 and 32, and a contact position which is visible at the figure 2 and which allows the circulation of an electric current in these current paths 31 and 32.
  • the movement of the movable contact element 2 between its cut-off position and its contact position is obtained, in the known contact device, by mounting both this movable contact element 2 and the current path 31 rotating around it. an axis of rotation X, this movable contact element 2 and this current path 31 being rigidly connected to each other to undergo the same rotational movements at the same time.
  • the current paths 31 and 32 are electrically connected in series with each other, for example by example by means of a flexible metal braid 6, so as to be traversed by the same current when the movable contact element 2 is in contact on the fixed contact element 1.
  • the braid 6 connects the current paths 31 and 32 in such a way that these current paths receive, in the event of current flow, an electromagnetic force corresponding to a torque exerted, with respect to the axis of rotation X, on the current path 31, and transmitted to the movable contact element 2 in the form of a bearing force of this movable contact element 2 on the fixed contact element 1.
  • the current path 32 is advantageously fixed relative to the fixed contact element 1, and the support 41 can be movable in translation in a housing, this movement being illustrated by the double arrow of the figure 3 between a position corresponding to the position of breaking the current of the movable contact and a position corresponding to the position of passage of the current of the movable contact.
  • the electrical contact device comprises Figures 7 and 8 ) a housing 5 to which is fixed the fixed contact element 1, so that the support 41 can be mounted movably in this housing 5.
  • the electrical contact device comprises only one movable contact element 2.
  • the current path 32 is advantageously fixed with respect to the fixed contact element 1, and the support 41 can for example be rotatably mounted in the housing 5 about an axis 410.
  • FIGS. Figures 5 and 6 illustrate a possible embodiment of the invention, wherein the electrical contact device comprises two movable contact elements 21 and 22, the operating principle of this second embodiment being illustrated in FIGS. Figures 5 and 6 .
  • the device according to this embodiment comprises two fixed contact elements 11 and 12, and, as in the first embodiment, two current paths 31 and 32 that are rigid and mobile. one with respect to the other.
  • the movable contact elements 21 and 22 are respectively displaceable, relative to the fixed contact elements 11 and 12, between a breaking position ( figures 5 and 9 ) preventing the flow of electric current in the current paths 31 and 32, and a contact position ( figures 6 and 10 ) allowing a flow of electric current in these current paths 31 and 32.
  • the movable contact element 21 and the current path 31 are both mounted in rotation about the same axis of rotation X1 by being rigidly connected to each other so as to always undergo the same rotational movements at the same time.
  • the movable contact element 22 and the current path 32 are both rotatably mounted about the same axis of rotation X2. being rigidly connected to each other so as to always undergo the same rotational movements at the same time.
  • the current paths 31 and 32 are electrically connected to each other, for example by means of a flexible metal braid 6, so as to undergo, in the event of current flow, a force electromagnetic which is reflected, by rotation about the respective axes of rotation X1 and X2 of these current paths and movable contact elements 21 and 22 to which they are respectively related, into a bearing force of each of these movable contact elements 21 and 22 on the fixed contact element 11 or 12 to which it corresponds.
  • the axes of rotation X1 and X2 are mounted on the same support 42, movable relative to each of the fixed contact elements 11 and 12.
  • the movable contact elements 21 and 22 can thus be simultaneously moved between their cut-off position and their contact position by moving the support 42 relative to the fixed contact elements 11 and 12.
  • the axes of rotation X1 and X2 may be coaxial.
  • the support 42 is movably mounted in this housing 5, preferably in translation for this embodiment.
  • the current paths 31 and 32 are substantially parallel to one another in the configuration for which each movable contact element is in contact with the corresponding fixed contact element.
  • the current paths 31 and 32 are electrically connected to each other in order to be traversed in the opposite direction by the same electric current, so that they undergo an electromagnetic force which pushes them away from one of the other.
  • This electromagnetic repulsion force exerted on the paths 31 and 32 thus has the effect of rotating each movable contact element 2, 21 or 22 about its axis of rotation X, X1, or X2, and of pressing it on the element corresponding fixed contact, 1, 11 or 12.

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  • Breakers (AREA)

Description

L'invention concerne, de façon générale, le domaine des appareillages électriques.The invention relates generally to the field of electrical equipment.

Plus précisément, l'invention concerne un dispositif de contact électrique, notamment utilisable dans un interrupteur sectionneur à déclenchement, et comprenant au moins un élément de contact fixe, un élément de contact mobile, et des premier et deuxième chemins de courant rigides et mobiles l'un par rapport à l'autre, l'élément de contact mobile étant déplaçable par rapport à l'élément de contact fixe entre une position de coupure empêchant la circulation de courant électrique dans les premier et deuxième chemins de courant, et une position de contact permettant une circulation de courant électrique dans les premier et deuxième chemins de courant, l'élément de contact mobile étant monté en rotation autour d'un axe de rotation, ledit premier chemin de courant étant rigidement lié en rotation audit élément de contact mobile autour de l'axe de rotation, et lesdits premier et deuxième chemins de courant étant électriquement reliés l'un à l'autre dans un sens propre à subir, en cas de circulation de courant, une force électromagnétique convertie, par rotation de l'élément de contact mobile autour de l'axe de rotation, en une force d'appui de cet élément de contact mobile sur l'élément de contact fixe, ledit axe de rotation étant monté sur un support mobile par rapport à l'élément de contact fixe , et l'élément de contact mobile étant déplaçable entre sa position de coupure et sa position de contact par déplacement du support par rapport à l'élément de contact fixe.More specifically, the invention relates to an electrical contact device, particularly used in a tripping switch disconnector, and comprising at least one fixed contact element, a movable contact element, and first and second rigid and movable current paths. relative to one another, the movable contact element being displaceable with respect to the fixed contact element between a cut-off position preventing the flow of electric current in the first and second current paths, and a position of contact allowing a flow of electric current in the first and second current paths, the movable contact element being rotatably mounted about an axis of rotation, said first current path being rigidly connected in rotation with said movable contact element around of the axis of rotation, and said first and second current paths being electrically connected to each other in a n sense proper to undergo, in case of current flow, an electromagnetic force converted, by rotation of the movable contact element about the axis of rotation, into a bearing force of this movable contact element on the fixed contact element, said axis of rotation being mounted on a support movable relative to the fixed contact element, and the movable contact element being movable between its cut-off position and its contact position by displacement of the carrier relative to to the fixed contact element.

Un dispositif de ce type est notamment connu de la demande de brevet européen EP 1 879 204 .A device of this type is particularly known from the European patent application EP 1 879 204 .

L'utilisation, dans un tel dispositif, de la force électromagnétique produite par la circulation d'un courant électrique pour augmenter la force avec laquelle l'élément de contact mobile est appliqué sur l'élément de contact fixe vise à éviter, en cas de passage de courants électriques de forte intensité, que les éléments de contact fixe et mobile ne se soudent l'un sur l'autre sous l'effet d'une température excessive.The use in such a device of the electromagnetic force produced by the circulation of an electric current to increase the force with which the movable contact element is applied to the fixed contact element is intended to avoid, in case of passage of electric currents of high intensity, that the fixed and mobile contact elements do not weld to one another under the effect of excessive temperature.

En effet, plus la force d'appui de l'élément de contact mobile sur l'élément de contact fixe est faible, et plus la surface de passage de courant à l'interface entre ces deux éléments de contact est faible.Indeed, the lower the bearing force of the movable contact element on the fixed contact element is, and the smaller the current flow area at the interface between these two contact elements.

Or, plus cette surface de passage de courant est faible, et plus la résistance électrique de l'interface entre les deux éléments de contact est élevée, et donc plus la température de cette interface augmente en cas de passage d'un courant électrique.However, the lower the current flow area, and the higher the electrical resistance of the interface between the two contact elements, and therefore the temperature of this interface increases in case of passage of an electric current.

Ainsi, l'accroissement de la force d'appui de l'élément de contact mobile sur l'élément de contact fixe, obtenu en utilisant la force électromagnétique développée par le courant électrique lui-même, permet d'accroître la surface de passage de ce courant à l'interface entre ces éléments de contacts, donc de diminuer la résistance électrique de cette interface, et finalement de limiter le dégagement de chaleur par effet Joule, qui résulte du passage de ce courant électrique, à une valeur inférieure à celle pour laquelle les éléments de contact fixe et mobile risquent de se souder l'un sur l'autre.Thus, increasing the bearing force of the movable contact element on the fixed contact element, obtained by using the electromagnetic force developed by the electric current itself, makes it possible to increase the passage area of the this current at the interface between these contact elements, therefore to reduce the electrical resistance of this interface, and finally to limit the Joule effect heat release, which results from the passage of this electric current, to a value lower than that for which Fixed and moving contact elements may weld together.

Cette technique ne peut toutefois présenter une efficacité optimale que si les premier et deuxième chemins de courant, entre lesquels se développe la force électromagnétique utilisée pour augmenter la force d'appui mutuel des éléments de contact fixe et mobile, sont à la fois suffisamment longs et suffisamment proches l'un de l'autre.However, this technique can only be as effective as if the first and second current paths, between which the electromagnetic force used to increase the mutual support force of the fixed and mobile contact elements, are both sufficiently long and close enough to each other.

Cependant, plus ces chemins de courant sont longs et proches l'un de l'autre, et plus la distance qui sépare l'élément de contact fixe de l'élément de contact mobile en position de coupure est faible.However, the longer these current pathways are close to each other, and the shorter the distance between the fixed contact element and the movable contact element in the cut position.

Or, cette conséquence est hautement indésirable dans la mesure où la capacité d'isolement d'un dispositif de contact de ce type est d'autant plus élevée que la distance séparant l'élément de contact fixe de l'élément de contact mobile en position de coupure est grande.However, this consequence is highly undesirable insofar as the insulation capacity of a contact device of this type is even higher than the distance separating the fixed contact element from the movable contact element in position. cutoff is great.

D'ailleurs, le document BE 889 311 A1 divulgue un dispositif selon le préambule de la revendication 1. Dans ce contexte, l'invention a pour but de proposer un dispositif de contact qui, tout en exploitant au mieux la force électromagnétique développée par le passage d'un courant pour augmenter la force d'appui mutuel des éléments de contact fixe et mobile, présente une capacité d'isolement élevée dans la position de coupure de l'élément de contact mobile. L'invention a pour objet un dispositif selon la revendication 1. courant reste constante lors du déplacement de l'élément de contact mobile par rapport à l'élément de contact fixe .Moreover, the document BE 889 311 A1 discloses a device according to the preamble of claim 1. In this context, the invention aims to provide a contact device which, while making the best use of the electromagnetic force developed by the passage of a current to increase the force of mutual support of the fixed and movable contact elements, has a high insulation capacity in the breaking position of the movable contact element. The invention relates to a device according to claim 1. current remains constant when moving the movable contact element relative to the fixed contact element.

De préférence, ce dispositif de contact électrique comprend un boîtier auquel sont fixés les éléments de contact fixes. Le support peut avantageusement être monté mobile en translation dans le boîtier.Preferably, this electrical contact device comprises a housing to which the fixed contact elements are fixed. The support can advantageously be mounted mobile in translation in the housing.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est un schéma de principe d'un dispositif de contact électrique connu, comportant un contact mobile unique représenté en position de coupure;
  • la figure 2 est un schéma de principe une vue schématique du dispositif de contact électrique de la figure 1, dont l'élément de contact mobile unique est représenté en position de contact;
  • la figure 3 est un schéma de principe d'un dispositif de contact électrique qui ne fait pas partie de l'invention, comportant un contact mobile unique représenté en position de coupure;
  • la figure 4 est un schéma de principe du dispositif de contact électrique de la figure 3, dont l'élément de contact mobile unique est représenté en position de contact;
  • la figure 5 est un schéma de principe d'un dispositif de contact électrique conforme à un mode de réalisation possible de l'invention, comportant deux contacts mobiles représentés en position de coupure;
  • la figure 6 est un schéma de principe du dispositif de contact électrique de la figure 5, dont les deux contacts mobiles sont représentés en position de contact;
  • la figure 7 est une vue d'un dispositif de contact électrique qui ne fait pas partie de l'invention, dont l'élément de contact mobile unique est représenté en position de coupure;
  • la figure 8 est une vue du dispositif de contact électrique de la figure 7, dont l'élément de contact mobile unique est représenté en position de contact;
  • la figure 9 est une vue d'un dispositif de contact électrique conforme au mode de réalisation possible de l'invention, dont les deux contacts mobiles sont représentés en position de coupure; et
  • la figure 10 est une vue du dispositif de contact électrique de la figure 9, dont les deux contacts mobiles sont représentés en position de contact.
Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 is a block diagram of a known electrical contact device, having a single movable contact shown in the cut-off position;
  • the figure 2 is a schematic diagram a schematic view of the electrical contact device of the figure 1 , the single movable contact element is shown in the contact position;
  • the figure 3 is a block diagram of an electrical contact device which does not form part of the invention, comprising a single movable contact represented in the cut-off position;
  • the figure 4 is a schematic diagram of the electrical contact device of the figure 3 , the single movable contact element is shown in the contact position;
  • the figure 5 is a block diagram of an electrical contact device according to a possible embodiment of the invention, comprising two movable contacts represented in the cut-off position;
  • the figure 6 is a schematic diagram of the electrical contact device of the figure 5 , whose two movable contacts are represented in the contact position;
  • the figure 7 is a view of an electrical contact device which does not form part of the invention, the single movable contact element of which is shown in the cut-off position;
  • the figure 8 is a view of the electrical contact device of the figure 7 , the single movable contact element is shown in the contact position;
  • the figure 9 is a view of an electrical contact device according to the possible embodiment of the invention, the two movable contacts are shown in the cut position; and
  • the figure 10 is a view of the electrical contact device of the figure 9 , whose two movable contacts are represented in the contact position.

Comme annoncé précédemment, l'invention concerne un dispositif de contact électrique notamment utilisable dans un interrupteur sectionneur à déclenchement.As previously announced, the invention relates to an electrical contact device that can notably be used in a tripping disconnect switch.

Un dispositif connu, du type de ceux dont l'invention vise à améliorer les performances de coupure, est illustré aux figures 1 et 2.A known device, of the type of those whose invention aims to improve the breaking performance, is illustrated in FIGS. Figures 1 and 2 .

Un tel dispositif comprend un élément de contact fixe 1, un élément de contact mobile 2, et deux chemins de courant 31 et 32.Such a device comprises a fixed contact element 1, a movable contact element 2, and two current paths 31 and 32.

Les chemins de courant 31 et 32, qui sont montés de manière à être mobiles l'un par rapport à l'autre, sont tous deux rigides, c'est-à-dire non susceptibles de subir des déformations appréciables dans l'utilisation normale qui en est faite, y compris dans le cadre de la présente invention.The current paths 31 and 32, which are mounted so as to be movable with respect to each other, are both rigid, that is to say not likely to undergo appreciable deformations in normal use. which is made, including within the scope of the present invention.

Typiquement, ces chemins de courant 31 et 32 sont réalisés sous la forme de conducteurs métalliques rigides, par exemple en cuivre.Typically, these current paths 31 and 32 are made in the form of rigid metal conductors, for example copper.

L'élément de contact mobile 2 est déplaçable, par rapport à l'élément de contact fixe 1, entre une position de coupure qui est visible à la figure 1 et qui empêche la circulation de courant électrique dans les chemins de courant 31 et 32, et une position de contact qui est visible à la figure 2 et qui permet la circulation d'un courant électrique dans ces chemins de courant 31 et 32.The movable contact element 2 is movable, relative to the fixed contact element 1, between a cut-off position which is visible on the figure 1 and which prevents the flow of electric current in the current paths 31 and 32, and a contact position which is visible at the figure 2 and which allows the circulation of an electric current in these current paths 31 and 32.

Le mouvement de l'élément de contact mobile 2 entre sa position de coupure et sa position de contact est obtenu, dans le dispositif de contact connu, en montant à la fois cet élément de contact mobile 2 et le chemin de courant 31 en rotation autour d'un axe de rotation X, cet élément de contact mobile 2 et ce chemin de courant 31 étant rigidement liés l'un à l'autre pour subir les mêmes mouvements de rotation en même temps.The movement of the movable contact element 2 between its cut-off position and its contact position is obtained, in the known contact device, by mounting both this movable contact element 2 and the current path 31 rotating around it. an axis of rotation X, this movable contact element 2 and this current path 31 being rigidly connected to each other to undergo the same rotational movements at the same time.

Par ailleurs, les chemins de courant 31 et 32 sont électriquement reliés en série l'un à l'autre, par exemple au moyen d'une tresse métallique souple 6, de manière à pouvoir être traversés par le même courant lorsque l'élément de contact mobile 2 est en contact sur l'élément de contact fixe 1.Moreover, the current paths 31 and 32 are electrically connected in series with each other, for example by example by means of a flexible metal braid 6, so as to be traversed by the same current when the movable contact element 2 is in contact on the fixed contact element 1.

Comme expliqué dans le brevet EP 1 879 204 précité, la tresse 6 relie les chemins de courant 31 et 32 de manière telle que ces chemins de courant reçoivent, en cas de circulation de courant, une force électromagnétique correspondant à un couple exercé, par rapport à l'axe de rotation X, sur le chemin de courant 31, et transmis à l'élément de contact mobile 2 sous la forme d'une force d'appui de cet élément de contact mobile 2 sur l'élément de contact fixe 1.As explained in the patent EP 1 879 204 mentioned above, the braid 6 connects the current paths 31 and 32 in such a way that these current paths receive, in the event of current flow, an electromagnetic force corresponding to a torque exerted, with respect to the axis of rotation X, on the current path 31, and transmitted to the movable contact element 2 in the form of a bearing force of this movable contact element 2 on the fixed contact element 1.

Comme le montre cependant l'examen simultané des figures 1 et 2, plus les chemins de courant 31 et 32 sont longs et proches l'un de l'autre, et plus la distance maximale entre les éléments de contact fixe 1 et mobile 2 est faible, ce qui fait peser le risque, en cas de tensions électriques élevées, que le dispositif de contact se comporte comme un éclateur et ne remplisse donc plus sa fonction d'interrupteur dans sa configuration illustrée à la figure 1.However, as shown by the simultaneous examination of Figures 1 and 2 , plus the current paths 31 and 32 are long and close to each other, and the greater the distance between the fixed contact elements 1 and mobile 2 is low, which poses the risk, in case of voltages electrical devices, that the contact device behaves like a spark gap and therefore no longer fulfills its function of a switch in its configuration illustrated in FIG. figure 1 .

Pour remédier à ce problème, on propose dans les dispositifs aux figures 3, 4, 7 et 8, de monter l'axe de rotation X de l'élément de contact mobile 2 sur un support 41 mobile par rapport à l'élément de contact fixe 1, et de réaliser le déplacement de l'élément de contact mobile 2 entre sa position de coupure et sa position de contact en déplaçant le support 41 par rapport à l'élément de contact fixe 1.To remedy this problem, it is proposed in the devices to figures 3 , 4 , 7 and 8 , to mount the axis of rotation X of the movable contact element 2 on a support 41 movable relative to the fixed contact element 1, and to carry out the displacement of the movable contact element 2 between its position of cut and its position of contact by moving the support 41 relative to the fixed contact element 1.

Comme le montre la comparaison des figures 1 et 3 d'une part, et des figures 2 et 4 d'autre part, on permet de rapprocher les chemins de courant 31 et 32 l'un de l'autre sans réduire le débattement de l'élément de contact mobile 2 par rapport à l'élément de contact fixe 1 ou, ce qui est équivalent, d'augmenter ce débattement en gardant la même distance entre les chemins de courant 31 et 32.As shown by the comparison of Figures 1 and 3 on the one hand, and figures 2 and 4 on the other hand, it is possible to bring the current paths 31 and 32 closer to one another without reducing the displacement of the movable contact element 2 with respect to the fixed contact element 1 or, which is equivalent, to increase this deflection by keeping the same distance between the current paths 31 and 32.

Dans le dispositif illustré par les figures 3 et 4, le chemin de courant 32 est avantageusement fixe par rapport à l'élément de contact fixe 1, et le support 41 peut être mobile en translation dans un boitier, ce mouvement étant illustré par la double flèche de la figure 3, entre une position correspondant à la position de coupure du courant du contact mobile et une position correspondant à la position de passage du courant du contact mobile.In the device illustrated by the figures 3 and 4 , the current path 32 is advantageously fixed relative to the fixed contact element 1, and the support 41 can be movable in translation in a housing, this movement being illustrated by the double arrow of the figure 3 between a position corresponding to the position of breaking the current of the movable contact and a position corresponding to the position of passage of the current of the movable contact.

En général, le dispositif de contact électrique comprend (figures 7 et 8) un boîtier 5 auquel est fixé l'élément de contact fixe 1, de sorte que le support 41 peut être monté mobile dans ce boîtier 5. Comme illustré par les figures 7 et 8, le dispositif de contact électrique ne comprend qu'un seul élément de contact mobile 2.
Dans ce cas, le chemin de courant 32 est avantageusement fixe par rapport à l'élément de contact fixe 1, et le support 41 peut par exemple être monté mobile en rotation dans le boîtier 5 autour d'un axe 410.In general, the electrical contact device comprises Figures 7 and 8 ) a housing 5 to which is fixed the fixed contact element 1, so that the support 41 can be mounted movably in this housing 5. As illustrated by the Figures 7 and 8 the electrical contact device comprises only one movable contact element 2.
In this case, the current path 32 is advantageously fixed with respect to the fixed contact element 1, and the support 41 can for example be rotatably mounted in the housing 5 about an axis 410.

Les figures 9 et 10 illustrent un mode de réalisation possible de l'invention, dans lequel le dispositif de contact électrique comprend deux éléments de contact mobiles 21 et 22, le principe de fonctionnement de ce deuxième mode de réalisation étant illustré aux figures 5 et 6.The Figures 9 and 10 illustrate a possible embodiment of the invention, wherein the electrical contact device comprises two movable contact elements 21 and 22, the operating principle of this second embodiment being illustrated in FIGS. Figures 5 and 6 .

Outre ces deux éléments de contact mobiles 21 et 22, le dispositif conforme à ce mode de réalisation comprend deux éléments de contact fixes 11 et 12, et, comme dans le premier mode de réalisation, deux chemins de courant 31 et 32 rigides et mobiles l'un par rapport à l'autre.In addition to these two movable contact elements 21 and 22, the device according to this embodiment comprises two fixed contact elements 11 and 12, and, as in the first embodiment, two current paths 31 and 32 that are rigid and mobile. one with respect to the other.

Les éléments de contact mobiles 21 et 22 sont respectivement déplaçables, par rapport aux éléments de contact fixes 11 et 12, entre une position de coupure (figures 5 et 9) empêchant la circulation de courant électrique dans les chemins de courant 31 et 32, et une position de contact (figures 6 et 10) permettant une circulation de courant électrique dans ces chemins de courant 31 et 32. Dans ce mode de réalisation, l'élément de contact mobile 21 et le chemin de courant 31 sont tous deux montés en rotation autour d'un même axe de rotation X1 en étant rigidement liés l'un à l'autre de manière à toujours subir les mêmes mouvements de rotation en même temps.The movable contact elements 21 and 22 are respectively displaceable, relative to the fixed contact elements 11 and 12, between a breaking position ( figures 5 and 9 ) preventing the flow of electric current in the current paths 31 and 32, and a contact position ( figures 6 and 10 ) allowing a flow of electric current in these current paths 31 and 32. In this embodiment, the movable contact element 21 and the current path 31 are both mounted in rotation about the same axis of rotation X1 by being rigidly connected to each other so as to always undergo the same rotational movements at the same time.

De façon équivalente et symétrique, l'élément de contact mobile 22 et le chemin de courant 32 sont tous deux montés en rotation autour d'un même axe de rotation X2 en étant rigidement liés l'un à l'autre de manière à toujours subir les mêmes mouvements de rotation en même temps. Dans ce mode de réalisation, les chemins de courant 31 et 32 sont électriquement reliés l'un à l'autre, par exemple au moyen d'une tresse métallique souple 6, de manière à subir, en cas de circulation de courant, une force électromagnétique qui se traduit, par rotation autour des axes de rotation respectifs X1 et X2 de ces chemins de courant et des éléments de contact mobiles 21 et 22 auxquels ils sont respectivement liés, en une force d'appui de chacun de ces éléments de contact mobiles 21 et 22 sur l'élément de contact fixe 11 ou 12 auquel il correspond.Equivalently and symmetrically, the movable contact element 22 and the current path 32 are both rotatably mounted about the same axis of rotation X2. being rigidly connected to each other so as to always undergo the same rotational movements at the same time. In this embodiment, the current paths 31 and 32 are electrically connected to each other, for example by means of a flexible metal braid 6, so as to undergo, in the event of current flow, a force electromagnetic which is reflected, by rotation about the respective axes of rotation X1 and X2 of these current paths and movable contact elements 21 and 22 to which they are respectively related, into a bearing force of each of these movable contact elements 21 and 22 on the fixed contact element 11 or 12 to which it corresponds.

Dans ce mode de réalisation, les axes de rotation X1 et X2 sont montés sur un même support 42, mobile par rapport à chacun des éléments de contact fixes 11 et 12.In this embodiment, the axes of rotation X1 and X2 are mounted on the same support 42, movable relative to each of the fixed contact elements 11 and 12.

Les éléments de contact mobiles 21 et 22 peuvent ainsi être simultanément déplacés entre leur position de coupure et leur position de contact par déplacement du support 42 par rapport aux éléments de contact fixes 11 et 12.The movable contact elements 21 and 22 can thus be simultaneously moved between their cut-off position and their contact position by moving the support 42 relative to the fixed contact elements 11 and 12.

En pratique et comme le montrent les figures 9 et 10, les axes de rotation X1 et X2 peuvent être coaxiaux.In practice and as shown by the Figures 9 and 10 the axes of rotation X1 and X2 may be coaxial.

Dans le cas typique où le dispositif de contact électrique comprend un boîtier 5 auquel sont fixés les éléments de contact fixes 11 et 12, le support 42 est monté mobile dans ce boîtier 5, de préférence en translation pour ce mode de réalisation.In the typical case where the electrical contact device comprises a housing 5 to which the fixed contact elements 11 and 12 are fixed, the support 42 is movably mounted in this housing 5, preferably in translation for this embodiment.

Dans le dispositif illustré à la figure 8 et le mode de réalisation illustré à la figure 10, les chemins de courant 31 et 32 sont sensiblement parallèles l'un à l'autre dans la configuration pour laquelle chaque élément de contact mobile est en contact avec l'élément de contact fixe correspondant.In the device illustrated in figure 8 and the embodiment illustrated in figure 10 the current paths 31 and 32 are substantially parallel to one another in the configuration for which each movable contact element is in contact with the corresponding fixed contact element.

En outre, dans le dispositif illustré à la figure 8 et le mode de réalisation illustré à la figure 10, les chemins de courant 31 et 32 sont électriquement reliés l'un à l'autre pour être parcourus en sens contraire par un même courant électrique, de sorte qu'ils subissent une force électromagnétique qui les repousse à distance l'un de l'autre.In addition, in the device illustrated in figure 8 and the embodiment illustrated in figure 10 the current paths 31 and 32 are electrically connected to each other in order to be traversed in the opposite direction by the same electric current, so that they undergo an electromagnetic force which pushes them away from one of the other.

Cette force de répulsion électromagnétique exercée sur les chemins 31 et 32 a ainsi pour effet de faire tourner chaque élément de contact mobile 2, 21 ou 22 autour de son axe de rotation X, X1, ou X2, et de le plaquer sur l'élément de contact fixe correspondant, 1, 11 ou 12.This electromagnetic repulsion force exerted on the paths 31 and 32 thus has the effect of rotating each movable contact element 2, 21 or 22 about its axis of rotation X, X1, or X2, and of pressing it on the element corresponding fixed contact, 1, 11 or 12.

Claims (3)

  1. Electrical contact device, in particular which can be used in a trigger disconnect switch, and comprising first and second fixed contact elements (11, 12), first and second mobile contact elements (21, 22), and first and second current paths (31, 32) that are rigid and movable with respect to one another, the first and second mobile contact elements (21, 22) being respectively able to be moved, with respect to the first and second fixed contact elements (11, 12), between a cut-off position preventing the flow of electrical current in the first and second current paths (31, 32), and a contact position allowing for the flow of electrical current in the first and second current paths (31, 32), the first and second mobile contact elements (21, 22) being mounted in rotation about respective first and second axes of rotation (X1, X2), said first and second current paths (31, 32) being rigidly connected in rotation respectively to said first and second mobile contact elements (21, 22) about respective first and second axes of rotation (X1, X2), and said first and second current paths (31, 32) being electrically connected together in a direction to undergo, in the case of a flow of current, an electromagnetic force converted, by rotation of the first and second mobile contact elements (21, 22) about respective first and second axes of rotation (X1, X2), into a support force of the first and second mobile contact elements (21, 22) respectively on the first and second fixed contact elements (11, 12), and said first and second axes of rotation (X1, X2) being mounted on the same movable support (42) in relation to each one of the first and second fixed contact elements (11, 12), and the first and second mobile contact elements (21, 22) able to be simultaneously moved between their cut-off position and their contact position by movement of the movable support (42) with respect to the first and second fixed contact elements (11, 12), the first and second current paths (31, 32) being electrically connected to one another in order to have the same electrical current flow through therein in the opposite direction by and in the contact position of the mobile contact elements (21,22) with these first and second current paths (31, 32) being substantially parallel to one another, characterised in that it comprises a flexible metallic braid (6) electrically connecting the first and second current paths (31, 32).
  2. Electrical contact device according to claim 1, characterised in that it comprises a case (5) to which are fastened the fixed contact elements (11, 12).
  3. Electrical contact device according to claim 2, characterised in that the support (42) is mounted mobile in translation in the case (5).
EP12163351.5A 2011-04-27 2012-04-05 Electrical contact device with efficient cutting Active EP2518746B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12163351T PL2518746T3 (en) 2011-04-27 2012-04-05 Electrical contact device with efficient cutting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1153598A FR2974660B1 (en) 2011-04-27 2011-04-27 ELECTRIC CONTACT DEVICE WITH HIGH PERFORMANCE CUT

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EP2518746A1 EP2518746A1 (en) 2012-10-31
EP2518746B1 true EP2518746B1 (en) 2018-07-18

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EP12163351.5A Active EP2518746B1 (en) 2011-04-27 2012-04-05 Electrical contact device with efficient cutting

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EP (1) EP2518746B1 (en)
CN (1) CN102760586B (en)
FR (1) FR2974660B1 (en)
PL (1) PL2518746T3 (en)
RU (1) RU2598539C2 (en)

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Publication number Priority date Publication date Assignee Title
CN112786321B (en) 2019-11-11 2023-02-17 德丰电创科技股份有限公司 Locking mechanism for locking a trigger assembly of an electrical device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218594B (en) * 1963-08-24 1966-06-08 Stotz Kontakt Gmbh Switchgear, in particular circuit breakers
GB1053936A (en) * 1964-08-01
FR2480996A1 (en) * 1980-04-17 1981-10-23 Etude Realisa Disjoncteurs Contact operating mechanism for LV cut=out - has slider forced down by spring against moving contacts underneath
EP0876675B1 (en) * 1996-01-22 1999-07-28 Siemens Aktiengesellschaft Electrical switching device
US7772943B2 (en) * 2006-07-13 2010-08-10 Siemens Industry, Inc. Design and method for keeping electrical contacts closed during short circuits
FR2905795B1 (en) * 2006-09-12 2012-11-16 Schneider Electric Ind Sas CONTACT DEVICE FOR ELECTRICAL APPARATUS AND ELECTRIC APPARATUS EQUIPPED WITH SUCH A DEVICE

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* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
RU2012114088A (en) 2013-10-20
CN102760586B (en) 2016-03-16
FR2974660A1 (en) 2012-11-02
FR2974660B1 (en) 2018-05-25
PL2518746T3 (en) 2019-01-31
RU2598539C2 (en) 2016-09-27
EP2518746A1 (en) 2012-10-31
CN102760586A (en) 2012-10-31

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