EP3651171B1 - Apparatus for interrupting an electric current - Google Patents

Apparatus for interrupting an electric current Download PDF

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Publication number
EP3651171B1
EP3651171B1 EP19207678.4A EP19207678A EP3651171B1 EP 3651171 B1 EP3651171 B1 EP 3651171B1 EP 19207678 A EP19207678 A EP 19207678A EP 3651171 B1 EP3651171 B1 EP 3651171B1
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EP
European Patent Office
Prior art keywords
cage
movable
interrupting
movable portion
receiver
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Active
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EP19207678.4A
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German (de)
French (fr)
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EP3651171A1 (en
Inventor
Patrick Comtois
Thomas MACHIZAUD
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3651171A1 publication Critical patent/EP3651171A1/en
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Publication of EP3651171B1 publication Critical patent/EP3651171B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • 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
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • 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
    • H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/002—Details of electromagnetic relays particular to three-phase electromagnetic relays

Definitions

  • the present invention relates to an apparatus for cutting an electric current.
  • WO-2014/096582-A1 describes a multipolar switching device comprising several separable contact breaking elements, each associated with a phase of a polyphase current and coupled to an actuator which simultaneously moves the separable contacts between an open position and a closed position. In the closed position, movable contacts of the breaking elements are in contact with corresponding fixed contacts, which allows the passage of electric current.
  • the breaking device comprises three breaking elements. In this case, each breaking element is associated with a phase of the current.
  • WO-2014/096582-A1 describes in particular means for adjusting the position of each cut-off element around the closed position, so that the mechanical synchronization of the fixed and movable pads of each cut-off element is the best possible between all the cut-off elements of the device.
  • the closed position there may be a misalignment between the movable contacts with respect to their ideal theoretical position, generally because of dimensional tolerances due to variabilities inherent in the manufacturing process of the device.
  • This misalignment results in unequal crushing of the contacts from one breaking element to another in the closed position.
  • the movable contacts of a first breaking element may be in a more advanced position than the movable contacts of a second breaking element of the same device.
  • Such a misalignment can cause heterogeneous wear of the electrical contacts within the device.
  • the position adjustment is difficult to adjust precisely, especially since it can only be performed when the movable contacts are in the open position.
  • each cut-off element comprising on the one hand a fixed part being linked to fixed electrical contacts and on the other hand a movable part which carries movable electrical contacts, the movable part being movable in translation along an axis of movement between an open position and a closed position of the electrical contacts, as well as 'an actuator comprising a movable part movable in translation along the axis of movement to move the movable parts between the open and closed positions, each movable part comprising for this purpose a connecting member fixed to the movable part.
  • each movable part of the breaking device comprises a body which comprises a first housing
  • each breaking element comprises on the one hand a cage mounted in the first housing, the cage being linked to a support carrying the movable contact.
  • the cage being movable in translation along the axis of movement with respect to the movable part and on the other hand a movable stop which limits the movement of the cage with respect to the movable part, the movable stop being movable in translation along the axis of movement by means of an adjustment screw.
  • the adjustable movable stopper makes it possible to control the movement of the cage independently of the body of the movable part, which makes it possible to finely adjust the position of the movable contact in the closed position to compensate for a possible misalignment with the other movable contacts when the latter are in the closed position.
  • the adjustment thus makes it possible to lengthen or reduce the travel in translation of each movable contact in a controlled manner.
  • This adjustment can be carried out for each of the cut-off elements, independently of the other cut-off elements, even when these cut-off elements are all connected to the same moving part of the actuator.
  • Switching device 2 shown in figure 1 comprises several cut-off elements 4 juxtaposed in a direction perpendicular to the plane of the figure 1 , only one of which is visible in this figure, with the reference 4.
  • the switching device 2 comprises also an actuator 6 common to the various cut-off elements 4.
  • the cut-off elements 4 are sometimes called “cut-off unit” or “cut-off bulb”.
  • the switching device 2 makes it possible to interrupt, or, alternatively, to authorize the flow of electric current, for example in response to a control voltage.
  • a switching device is for example intended to be installed in an electrical installation, in particular in an electrical cabinet.
  • the switching device 2 is for example a multipolar device with separable contacts, suitable for interrupting a polyphase electric current.
  • each cut-off element 4 is associated with a phase of the electric current.
  • the device is suitable for interrupting a three-phase electric current and comprises three cut-off elements 4.
  • the three cut-off elements 4 are identical here, but only one of them is described in detail in what follows.
  • Each cut-off element 4 comprises fixed electrical contacts 8 connected to connection pads 10 upstream and downstream of the device 2, and also comprises a movable electrical contact 12 reversibly displaceable relative to the fixed contacts 14, here along a displacement axis. X, between an open position and a closed position.
  • the fixed contacts 8 each comprise a contact pad 14 and the movable contact 12 comprises contact pads 16.
  • the flow of electric current within a switching element 4 is interrupted when the fixed contacts 8 integral with the connection pad 10 are separated from the movable contacts 12. When these contacts are separated, the fixed contact pads 14 carried by the fixed contacts 8 do not touch the movable contact pads 16 carried by the movable contacts 12.
  • This first configuration corresponds to the open position of the movable contacts 12 in which the current does not flow.
  • the closed position of the movable contacts 12 corresponds to the case where the movable contact pads 16 bear against the fixed contact pads 14, thus allowing current to flow in this second configuration.
  • the cut-off elements 4 are each equipped with a movable part 20.
  • a connecting member 30 ensures the coupling of the movable part 20 of each cut-off element 4 to the actuator 6.
  • the simultaneous movement of the movable contacts 12 between the position opening and the closed position is induced by a moving part 32 of the actuator 6.
  • the actuator 6 here comprises an electromagnet, not referenced in the figures, as well as the movable part 32.
  • the movable part 32 comprises a magnetic material.
  • the electromagnet When the electromagnet is supplied following the reception of a control voltage, it exerts a magnetic force which drives the movable part 32 in translation along the X axis towards the closed position. Conversely, when the electromagnet ceases to be supplied, the moving part 32 is returned to the open position.
  • the actuator 6 is installed on a front part of the device 2.
  • front and rear parts of the device 2 are defined in the following with reference to the movement of the movable contacts 12. along the X axis.
  • the arrow F1 indicates the direction of movement of the movable part 32 and of the movable contacts 12 from the rear towards the front of the device 2.
  • the movable part 32 makes it possible to simultaneously move each movable part 20 of each cut-off element 4 along the axis of movement X.
  • the movement of the part 32 along an axis of movement X drives, via the connecting member 30 of each element switch 4, the displacement of each movable part 20 along the same axis of displacement X, thus generating the transition from the open position to the closed position (or vice versa).
  • This displacement of the movable part 20 of the cut-off element 4 therefore has the effect of bringing the contact pads 16 carried by the movable contact 12 into contact with the contact pads 14 carried by each of the fixed contacts 8.
  • the movable part 20 is shown in detail in figures 2 and 3 .
  • the movable part 20 comprises a body 22, integral with the connecting member 30, and a cage 24 to which is linked a movable support 26, which carries the movable contacts 12.
  • This movable support 26 is also called “movable bridge”. In the remainder of the text, the expression “movable bridge” is used.
  • the body 22 comprises a hollow part forming a first housing 34 delimited by side walls 36 and 38, a front wall 41 and a rear wall 40.
  • the cage 24 is housed in this first housing 34.
  • the cage 24 is preferably rectangular and comprises a front face 48, a rear face 46 and two lateral faces 50 and 52.
  • the rear face 46 is perpendicular to the axis of displacement X.
  • the faces 46, 48, 50 and 52 of the cage 24 define a second housing 44 intended to accommodate the movable bridge 26 and a member 28 for elastic return.
  • This resilient return member 28 is for example a helical compression spring.
  • the elastic return member 28 allows movement along the axis of movement X of the movable bridge 26 relative to the cage 24.
  • the elastic return member 28 brings back the movable bridge 26 in the direction of the fixed contacts 8 and makes it possible to absorb the shock undergone by the movable contact 12 when the movable contact pads 16 come into contact with the fixed contact pads 14 , when closing the cut-off element 4.
  • the movable bridge 26 is movable in translation with respect to the cage 24 along the axis of movement X.
  • the cage 24 is movable in translation with respect to the body 22 the same axis of movement X.
  • the translation of the cage 24 by relative to the body 22 is decoupled from the translation of the movable bridge 26 relative to the cage 24. In other words, the two translations are independent of one another.
  • the movable bridge 26 can be kept integral with the cage 24, the elastic return member 28 then being able to be omitted.
  • the cut-off element 4 further comprises a movable stop 60, here disposed between the rear face 46 of the cage 24 and the rear wall 40 of the body 22.
  • the movable stop 60 is disposed inside the first housing. 34, behind the rear face 46.
  • the movable stop 60 is movable in translation along the axis of movement X and limits a retreat of the cage 24 when the movable part 20 arrives in the open position.
  • the movable stop 60 is secured to an adjustment screw 62.
  • the adjustment screw 62 here comprises a head 64 and a rod 66.
  • Hole 42 and orifice 54 are each coaxial with the axis of movement X.
  • the rod 66 thus forms a preferentially helical connection with the hole 42.
  • This helical connection here allows the movement of the movable stop 60 along the axis of movement X.
  • the head 64 of the adjusting screw 62 is located on the outside of the body 22, opposite the link member 30 along the X axis. In other words, the head 64 protrudes from the body. rear wall 40 of body 22, so as to be accessible from the outside in order to be able to be actuated by a tool 80, such as a screwdriver.
  • the movable stop 60 is a flange attached to the rod 66 of the adjustment screw 62, so as to be integral in rotation with the rod 66 when the latter rotates around the X axis.
  • This collar may take the form of a disc centered on the X displacement axis.
  • the flange of the movable stopper 60 can be brought closer to the rear face 46 of the cage 24 in order to limit the movement of the cage 24 relative to the body 22.
  • the movable stop 60 remains stationary as long as the adjustment screw 62 is not turned by the tool 80, for example because a thread of the rod 66 is engaged with the tapping hole 42.
  • the movable stopper 60 When the adjustment screw 62 is in a loosened state, the movable stopper 60 is in a retracted position at the rear of the apparatus 2. The cage 24 is not constrained to remain in the advanced position by the movable stopper 60 and the cage 24 is then in a “floating” position.
  • the cage 24 is brought back from the front to the rear until it comes into abutment against the movable stop 60 and the cage 24 is then in the retracted position.
  • the exact position of the cage 24 can then be adjusted using the adjusting screw 62, for example by means of the tool 80, with a view to compensating for any misalignment with the movable contacts 12 of the other cut-off elements 4. .
  • the spacings e1 on the figure 4 and e2 on the figure 5 correspond to the distance between the inside face of the front wall 41 of the body 22 and the front face 48 of the cage 24, here when the cage 24 is in abutment against the movable stop 60.
  • the spacings e1 and e2 are here each between 0.1mm and 1mm.
  • the spacing e1 is greater than the spacing e2 of the figure 5 .
  • the cage 24 is translated from the rear part of the switching device 2 towards the front.
  • the translation of the cage 24 by means of the stop 60 and the adjustment screw 62 allows the movable bridge 26 to be brought closer to the actuator 6, which is equivalent to precisely adjusting the position of the movable contacts 12 integral with the movable bridge. 26 in relation to the fixed contacts 8.
  • the adjustment of the cut-off elements 4 preferably takes place in the closed position.
  • each movable contact 12 can be lengthened or reduced in a controlled manner.
  • the translation travel can be adjusted for each of the cut-off elements 4, independently of the other cut-off elements 4.
  • the invention makes it possible to carry out the adjustment even when the cut-off elements 4 are all connected to the same moving part 32 of the actuator 6, unlike the adjustment described in WO-2014/096582-A1 , in which the adjustment function was provided by a screw which simultaneously served as a connecting member. The adjustment could not then be done in the closed position and had to be done in the open position.
  • the adjustment function and the function of connection with the actuator are performed independently of one another.
  • the link function between the actuator 6 and the movable contact 12 is separate from the stroke adjustment function, which makes it possible to carry out the adjustment in the closed position even when the actuator 6 is mounted on the front face of the device 2.
  • each cut-off element 4 comprises a washer 68 threaded onto the rod 66 and interposed between the head 64 and the outer face of the rear wall 40 of the body 22.
  • This washer 68 makes it possible to occupy the space created between the head. 64 and the outer face of the rear wall 40 when varying the spacing between the inner face of the rear wall 40 of the body 22 and the rear face 46 of the cage 24.
  • the washer 68 is made of metal or made of elastomeric material.
  • the cage 24 is made of a plastic material, preferably in the form of a strip.
  • This strip of plastic material has a folded shape so as to form a rectangular frame.
  • the rear wall 46 is perpendicular to the axis of movement X.
  • the rear wall 46 is adjacent to the two side walls 50 and 52. These side walls 50 and 52 are mutually parallel and adjacent to the front wall 48. of the cage 24.
  • the front wall 48 and the rear wall 46 are mutually parallel.
  • the rear wall 46 is split when the folded strip forming the frame consisting of the wall rear 46, the side wall 50, the front wall 48 and the side wall 52 cover the rear wall 46.
  • the cage 24 can have another shape, for example square or cylindrical.
  • the shape of the housing 34 must in all circumstances be adapted to receive the cage 24.
  • At least one of the side faces 50 or 52 of the cage 24 comprises a first relief 70 which collaborates by complementarity of shapes with a second relief 72 present on one of the walls. side 36 or 38 of the body 22.
  • the connections thus formed by the first relief 70 and the second relief 72 maintain the cage 24 in the housing 34 and guide it in translation along the axis of displacement X.
  • first relief 70 collaborates with a third relief 74 present on the movable bridge 26 in order to maintain the bridge 26 inside the second housing 44 delimited by the cage 24, in particular during assembly operations of the 'cut-off element 4.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transmission Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Description

La présente invention concerne un appareil de coupure d'un courant électrique.The present invention relates to an apparatus for cutting an electric current.

Dans le domaine des appareils de coupure d'un courant électrique, tels que les contacteurs, WO-2014/096582-A1 décrit un appareil de coupure multipolaire comportant plusieurs éléments de coupure à contact séparables, chacun associé à une phase d'un courant polyphasé et couplé à un actionneur qui déplace simultanément les contacts séparables entre une position d'ouverture et une position de fermeture. En position de fermeture, des contacts mobiles des éléments de coupure sont en contact avec des contacts fixes correspondants, ce qui permet le passage du courant électrique. Dans le cas d'un courant triphasé, l'appareil de coupure comprend trois éléments de coupure. Dans ce cas, chaque élément de coupure est associé à une phase du courant.In the field of electrical current breaking devices, such as contactors, WO-2014/096582-A1 describes a multipolar switching device comprising several separable contact breaking elements, each associated with a phase of a polyphase current and coupled to an actuator which simultaneously moves the separable contacts between an open position and a closed position. In the closed position, movable contacts of the breaking elements are in contact with corresponding fixed contacts, which allows the passage of electric current. In the case of a three-phase current, the breaking device comprises three breaking elements. In this case, each breaking element is associated with a phase of the current.

WO-2014/096582-A1 décrit notamment des moyens pour ajuster la position de chaque élément de coupure autour de la position de fermeture, afin que la synchronisation mécanique des pastilles fixe et mobile de chaque élément de coupure soit la meilleure possible entre tous les éléments de coupure de l'appareil. En effet, en position de fermeture, il peut exister un désalignement entre les contacts mobiles par rapport à leur position théorique idéale, généralement à cause de tolérances dimensionnelles dues à des variabilités inhérentes au procédé de fabrication de l'appareil. WO-2014/096582-A1 describes in particular means for adjusting the position of each cut-off element around the closed position, so that the mechanical synchronization of the fixed and movable pads of each cut-off element is the best possible between all the cut-off elements of the device. In fact, in the closed position, there may be a misalignment between the movable contacts with respect to their ideal theoretical position, generally because of dimensional tolerances due to variabilities inherent in the manufacturing process of the device.

Ce désalignement résulte en un écrasement inégal des contacts d'un élément de coupure à un autre en position de fermeture. Par exemple, les contacts mobiles d'un premier élément de coupure peuvent être dans une position plus avancée que les contacts mobiles d'un deuxième élément de coupure du même appareil. Un tel désalignement peut engendrer une usure hétérogène des contacts électriques au sein de l'appareil. Toutefois, dans certaines circonstances, l'ajustement de la position est difficile à régler avec précision, notamment car il ne peut être effectué que lorsque les contacts mobiles sont en position d'ouverture.This misalignment results in unequal crushing of the contacts from one breaking element to another in the closed position. For example, the movable contacts of a first breaking element may be in a more advanced position than the movable contacts of a second breaking element of the same device. Such a misalignment can cause heterogeneous wear of the electrical contacts within the device. However, in some circumstances, the position adjustment is difficult to adjust precisely, especially since it can only be performed when the movable contacts are in the open position.

C'est à ces problèmes qu'entend plus particulièrement remédier l'invention, en proposant un nouvel appareil de coupure d'un courant électrique comprenant des éléments de coupure, chaque élément de coupure comportant d'une part une partie fixe étant liée à des contacts électriques fixes et d'autre part une partie mobile qui porte des contacts électriques mobiles, la partie mobile étant déplaçable en translation le long d'un axe de déplacement entre une position d'ouverture et une position de fermeture des contacts électriques, ainsi qu'un actionneur comprenant une pièce mobile déplaçable en translation selon l'axe de déplacement pour déplacer les parties mobiles entre les positions d'ouverture et de fermeture, chaque pièce mobile comportant à cet effet un organe de liaison fixé à la partie mobile.It is to these problems that the invention more particularly intends to remedy, by proposing a new device for cutting an electric current comprising cut-off elements, each cut-off element comprising on the one hand a fixed part being linked to fixed electrical contacts and on the other hand a movable part which carries movable electrical contacts, the movable part being movable in translation along an axis of movement between an open position and a closed position of the electrical contacts, as well as 'an actuator comprising a movable part movable in translation along the axis of movement to move the movable parts between the open and closed positions, each movable part comprising for this purpose a connecting member fixed to the movable part.

De plus, chaque partie mobile de l'appareil de coupure comporte un corps qui comprend un premier logement, et chaque élément de coupure comporte d'une part une cage montée dans le premier logement, la cage étant liée à un support portant le contact mobile, la cage étant déplaçable en translation selon l'axe de déplacement par rapport à la partie mobile et d'autre part une butée mobile qui limite le déplacement de la cage par rapport à la partie mobile, la butée mobile étant déplaçable en translation selon l'axe de déplacement au moyen d'une vis de réglage.In addition, each movable part of the breaking device comprises a body which comprises a first housing, and each breaking element comprises on the one hand a cage mounted in the first housing, the cage being linked to a support carrying the movable contact. , the cage being movable in translation along the axis of movement with respect to the movable part and on the other hand a movable stop which limits the movement of the cage with respect to the movable part, the movable stop being movable in translation along the axis of movement by means of an adjustment screw.

Grace à l'invention, le réglage de l'alignement entre les éléments de coupure est plus simple et plus précis. La butée mobile réglable permet de contrôler le déplacement de la cage indépendamment du corps de la partie mobile, ce qui permet de régler finement la position du contact mobile dans la position de fermeture pour compenser un possible désalignement avec les autres contacts mobiles lorsque ces derniers sont dans la position de fermeture.Thanks to the invention, the adjustment of the alignment between the cut-off elements is simpler and more precise. The adjustable movable stopper makes it possible to control the movement of the cage independently of the body of the movable part, which makes it possible to finely adjust the position of the movable contact in the closed position to compensate for a possible misalignment with the other movable contacts when the latter are in the closed position.

Le réglage permet ainsi d'allonger ou de réduire la course en translation de chaque contact mobile de façon contrôlée. Ce réglage peut être effectué pour chacun des éléments de coupure, indépendamment des autres éléments de coupure, même lorsque ces éléments de coupure sont tous connectées à la même pièce mobile de l'actionneur.The adjustment thus makes it possible to lengthen or reduce the travel in translation of each movable contact in a controlled manner. This adjustment can be carried out for each of the cut-off elements, independently of the other cut-off elements, even when these cut-off elements are all connected to the same moving part of the actuator.

Au contraire, dans WO-2014/096582-A1 , le réglage de la course est effectué en allongeant ou raccourcissant l'organe de liaison qui fixe la partie mobile au contact mobile. Il n'est donc pas possible de régler la course tant que la pièce mobile de l'actionneur est connectée aux parties mobiles.On the contrary, in WO-2014/096582-A1 , the stroke is adjusted by lengthening or shortening the connecting member which fixes the movable part to the movable contact. It is therefore not possible to adjust the stroke as long as the moving part of the actuator is connected to the moving parts.

En outre, lorsque la pièce mobile est déconnectée pour donner accès aux organes de liaison, il n'est alors plus possible de savoir avec précision quelle est la véritable position de fermeture, puisque celle-ci est imposée aux contacts par la pièce mobile.In addition, when the moving part is disconnected to give access to the connecting members, it is then no longer possible to know precisely what the true closed position is, since this is imposed on the contacts by the moving part.

Selon des aspects avantageux mais non obligatoires de l'invention, un tel appareil de coupure peut incorporer une ou plusieurs des caractéristiques suivantes, prises selon toute combinaison techniquement admissible :

  • La tête de la vis de réglage est disposée, au sein de la partie mobile, à l'opposé de l'organe de liaison le long de l'axe de déplacement.
  • La butée mobile est une collerette intégrée à une tige de la vis de réglage, la collerette étant solidaire en rotation avec la tige.
  • La cage comporte une face arrière perpendiculaire à l'axe de déplacement, la butée mobile étant disposée à l'intérieur du premier logement en arrière de la face arrière, de manière à empêcher un recul de la cage lorsque la partie mobile arrive dans la position d'ouverture.
  • Chaque élément de coupure comporte une rondelle disposée entre la tête de la vis de réglage et une paroi arrière du corps de la partie mobile.
  • La cage délimite un deuxième logement, le support étant monté dans le deuxième logement, le support étant déplaçable en translation par rapport à la cage, au sein du deuxième logement le long de l'axe de déplacement et la cage comporte un organe de rappel élastique disposé dans le deuxième logement, qui ramène le support en direction des contacts fixes.
  • Au moins une paroi latérale de la cage comporte un premier relief destiné à collaborer par complémentarité de formes avec un deuxième relief présent sur une face intérieure du premier logement, pour maintenir et guider en translation la cage par rapport au corps de la partie mobile.
  • La cage est réalisée en matériau plastique.
  • L'appareil est un appareil de coupure multipolaire adapté pour interrompre un courant électrique polyphasé, l'appareil de coupure comportant une pluralité d'éléments de coupure, chaque élément de coupure étant associé à une phase du courant électrique.
According to advantageous but not mandatory aspects of the invention, such a switching device can incorporate one or more of the following characteristics, taken in any technically acceptable combination:
  • The head of the adjusting screw is disposed, within the movable part, opposite the connecting member along the axis of movement.
  • The movable stopper is a collar integrated into a rod of the adjustment screw, the collar being integral in rotation with the rod.
  • The cage has a rear face perpendicular to the axis of movement, the movable stopper being disposed inside the first housing behind the rear face, so as to prevent the cage from moving back when the moving part arrives in the open position.
  • Each cut-off element comprises a washer arranged between the head of the adjustment screw and a rear wall of the body of the movable part.
  • The cage delimits a second housing, the support being mounted in the second housing, the support being movable in translation with respect to the cage, within the second housing along the axis of movement and the cage comprises an elastic return member. disposed in the second housing, which returns the support in the direction of the fixed contacts.
  • At least one side wall of the cage comprises a first relief intended to collaborate by complementarity of shapes with a second relief present on an inner face of the first housing, to maintain and guide the cage in translation relative to the body of the movable part.
  • The cage is made of plastic material.
  • The device is a multipolar switching device suitable for interrupting a polyphase electric current, the breaking device comprising a plurality of breaking elements, each breaking element being associated with a phase of the electric current.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre, de plusieurs modes de réalisation d'un appareil de coupure, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés, dans lesquels :

  • La figure 1 est une coupe schématique d'un appareil de coupure conforme à un mode de réalisation de l'invention ;
  • La figure 2 est une vue éclatée schématique d'une partie mobile de l'appareil de coupure de la figure 1 ;
  • La figure 3 est une vue partiellement écorchée de la partie mobile de l'appareil de coupure de la figure 2 ;
  • La figure 4 est une vue en élévation de la partie mobile des figures 2 et 3, dans laquelle la vis de réglage est desserrée, la cage étant translatée vers l'arrière ;
  • La figure 5 est une vue en élévation de la partie mobile des figures 2 à 4, dans laquelle la vis de réglage est serrée, la cage étant translatée vers l'avant.
The invention will be better understood and other advantages thereof will emerge more clearly in the light of the following description of several embodiments of a switching device, given solely by way of example and made in reference to the accompanying drawings, in which:
  • The figure 1 is a schematic sectional view of a switching device according to one embodiment of the invention;
  • The figure 2 is a schematic exploded view of a movable part of the switching device of the figure 1 ;
  • The figure 3 is a partially cut-away view of the moving part of the cut-off device of the figure 2 ;
  • The figure 4 is an elevational view of the moving part of the figures 2 and 3 , in which the adjustment screw is loosened, the cage being translated backwards;
  • The figure 5 is an elevational view of the moving part of the figures 2 to 4 , in which the adjustment screw is tightened, the cage being translated forward.

L'appareil de coupure 2 représenté à la figure 1 comprend plusieurs éléments de coupure 4 juxtaposés selon une direction perpendiculaire au plan de la figure 1, dont un seul est visible sur cette figure, avec la référence 4. L'appareil de coupure 2 comprend également un actionneur 6 commun aux différents éléments de coupure 4. Les éléments de coupure 4 sont parfois appelés « bloc de coupure » ou « ampoule de coupure ».Switching device 2 shown in figure 1 comprises several cut-off elements 4 juxtaposed in a direction perpendicular to the plane of the figure 1 , only one of which is visible in this figure, with the reference 4. The switching device 2 comprises also an actuator 6 common to the various cut-off elements 4. The cut-off elements 4 are sometimes called “cut-off unit” or “cut-off bulb”.

L'appareil de coupure 2 permet d'interrompre, ou, alternativement, d'autoriser la circulation du courant électrique, par exemple en réponse à une tension de commande. Un tel appareil de coupure est par exemple destiné à être installé dans une installation électrique, notamment dans une armoire électrique.The switching device 2 makes it possible to interrupt, or, alternatively, to authorize the flow of electric current, for example in response to a control voltage. Such a switching device is for example intended to be installed in an electrical installation, in particular in an electrical cabinet.

L'appareil de coupure 2 est par exemple un appareil multipolaire à contacts séparables, adapté pour interrompre un courant électrique polyphasé. Dans ce cas, chaque élément de coupure 4 est associé à une phase du courant électrique. Dans le mode de réalisation explicité dans les dessins, l'appareil est adapté pour interrompre un courant électrique triphasé et comporte trois éléments de coupure 4.The switching device 2 is for example a multipolar device with separable contacts, suitable for interrupting a polyphase electric current. In this case, each cut-off element 4 is associated with a phase of the electric current. In the embodiment explained in the drawings, the device is suitable for interrupting a three-phase electric current and comprises three cut-off elements 4.

Les trois éléments de coupure 4 sont ici identiques, mais seule l'une d'entre elles est décrite en détail dans ce qui suit.The three cut-off elements 4 are identical here, but only one of them is described in detail in what follows.

Chaque élément de coupure 4 comporte des contacts électriques fixes 8 connectés à des plages de raccordement 10 amont et aval de l'appareil 2, et comporte également un contact électrique mobile 12 réversiblement déplaçable par rapport aux contacts fixes 14, ici selon un axe de déplacement X, entre une position d'ouverture et une position de fermeture.Each cut-off element 4 comprises fixed electrical contacts 8 connected to connection pads 10 upstream and downstream of the device 2, and also comprises a movable electrical contact 12 reversibly displaceable relative to the fixed contacts 14, here along a displacement axis. X, between an open position and a closed position.

Les contacts fixes 8 comportent chacun une pastille de contact 14 et le contact mobile 12 comporte des pastilles de contact 16.The fixed contacts 8 each comprise a contact pad 14 and the movable contact 12 comprises contact pads 16.

La circulation du courant électrique au sein d'un élément de coupure 4 est interrompue lorsque les contacts fixes 8 solidaires de la plage de raccordement 10 sont séparés des contacts mobiles 12. Lorsque ces contacts sont séparés, les pastilles de contact fixes 14 portées par les contacts fixes 8 ne touchent pas les pastilles de contact mobiles 16 portées par les contacts mobiles 12. Cette première configuration correspond à la position d'ouverture des contacts mobiles 12 dans laquelle le courant ne circule pas.The flow of electric current within a switching element 4 is interrupted when the fixed contacts 8 integral with the connection pad 10 are separated from the movable contacts 12. When these contacts are separated, the fixed contact pads 14 carried by the fixed contacts 8 do not touch the movable contact pads 16 carried by the movable contacts 12. This first configuration corresponds to the open position of the movable contacts 12 in which the current does not flow.

Inversement, la position de fermeture des contacts mobiles 12 correspond au cas où les pastilles de contact mobiles 16 sont en appui contre les pastilles de contact fixes 14, permettant ainsi la circulation du courant dans cette deuxième configuration.Conversely, the closed position of the movable contacts 12 corresponds to the case where the movable contact pads 16 bear against the fixed contact pads 14, thus allowing current to flow in this second configuration.

Les éléments de coupure 4 sont chacun équipé d'une partie mobile 20. Un organe de liaison 30 assure le couplage de la partie mobile 20 de chaque élément de coupure 4 à l'actionneur 6. Le déplacement simultané des contacts mobiles 12 entre la position d'ouverture et la position de fermeture est induit par une pièce mobile 32 de l'actionneur 6.The cut-off elements 4 are each equipped with a movable part 20. A connecting member 30 ensures the coupling of the movable part 20 of each cut-off element 4 to the actuator 6. The simultaneous movement of the movable contacts 12 between the position opening and the closed position is induced by a moving part 32 of the actuator 6.

L'actionneur 6 comporte ici un électroaimant, non référencé sur les figures, ainsi que la pièce mobile 32. Par exemple, la pièce mobile 32 comporte un matériau magnétique. Lorsque l'électroaimant est alimenté suite à la réception d'une tension de commande, il exerce une force magnétique qui entraîne la pièce mobile 32 en translation selon l'axe X vers la position de fermeture. Inversement, lorsque l'électroaimant cesse d'être alimenté, la pièce mobile 32 est ramenée vers la position d'ouverture.The actuator 6 here comprises an electromagnet, not referenced in the figures, as well as the movable part 32. For example, the movable part 32 comprises a magnetic material. When the electromagnet is supplied following the reception of a control voltage, it exerts a magnetic force which drives the movable part 32 in translation along the X axis towards the closed position. Conversely, when the electromagnet ceases to be supplied, the moving part 32 is returned to the open position.

Par exemple, l'actionneur 6 est installé sur une partie avant de l'appareil 2. A des fins d'illustration, des parties avant et arrière de l'appareil 2 sont définies dans ce qui suit en référence au déplacement des contacts mobiles 12 selon l'axe X. Sur la figure 1, la flèche F1 indique le sens de déplacement de la pièce mobile 32 et des contacts mobiles 12 depuis l'arrière vers l'avant de l'appareil 2.For example, the actuator 6 is installed on a front part of the device 2. For illustration purposes, front and rear parts of the device 2 are defined in the following with reference to the movement of the movable contacts 12. along the X axis. On the figure 1 , the arrow F1 indicates the direction of movement of the movable part 32 and of the movable contacts 12 from the rear towards the front of the device 2.

La pièce mobile 32 permet de déplacer simultanément chaque partie mobile 20 de chaque élément de coupure 4 selon l'axe de déplacement X. Le déplacement de la pièce 32 selon un axe de déplacement X entraîne, via l'organe de liaison 30 de chaque élément de coupure 4, le déplacement de chaque partie mobile 20 selon le même axe de déplacement X, générant ainsi la transition de la position d'ouverture vers la position de fermeture (ou inversement). Ce déplacement de la partie mobile 20 de l'élément de coupure 4 a donc pour effet de mettre en contact les pastilles de contact 16 portées par le contact mobile 12 avec les pastilles de contact 14 portées par chacun des contacts fixes 8.The movable part 32 makes it possible to simultaneously move each movable part 20 of each cut-off element 4 along the axis of movement X. The movement of the part 32 along an axis of movement X drives, via the connecting member 30 of each element switch 4, the displacement of each movable part 20 along the same axis of displacement X, thus generating the transition from the open position to the closed position (or vice versa). This displacement of the movable part 20 of the cut-off element 4 therefore has the effect of bringing the contact pads 16 carried by the movable contact 12 into contact with the contact pads 14 carried by each of the fixed contacts 8.

La partie mobile 20 est représentée en détail aux figures 2 et 3. La partie mobile 20 comprend un corps 22, solidaire à l'organe de liaison 30, et une cage 24 à laquelle est lié un support mobile 26, lequel porte les contacts mobiles 12. Ce support mobile 26 est aussi appelé « pont mobile ». Dans la suite du texte, on utilise l'expression « pont mobile ».The movable part 20 is shown in detail in figures 2 and 3 . The movable part 20 comprises a body 22, integral with the connecting member 30, and a cage 24 to which is linked a movable support 26, which carries the movable contacts 12. This movable support 26 is also called “movable bridge”. In the remainder of the text, the expression “movable bridge” is used.

Dans ce mode de réalisation, le corps 22 comprend une partie creuse formant un premier logement 34 délimitée par des parois latérales 36 et 38, une paroi avant 41 et une paroi arrière 40. La cage 24 est logée dans ce premier logement 34.In this embodiment, the body 22 comprises a hollow part forming a first housing 34 delimited by side walls 36 and 38, a front wall 41 and a rear wall 40. The cage 24 is housed in this first housing 34.

La cage 24 est préférentiellement rectangulaire et comporte une face avant 48, une face arrière 46 et deux faces latérales 50 et 52. La face arrière 46 est perpendiculaire à l'axe de déplacement X.The cage 24 is preferably rectangular and comprises a front face 48, a rear face 46 and two lateral faces 50 and 52. The rear face 46 is perpendicular to the axis of displacement X.

Dans cet exemple, les faces 46, 48, 50 et 52 de la cage 24 délimitent un deuxième logement 44 destiné à accueillir le pont mobile 26 et un organe 28 de rappel élastique. Cet organe 28 de rappel élastique est par exemple un ressort hélicoïdal à compression.In this example, the faces 46, 48, 50 and 52 of the cage 24 define a second housing 44 intended to accommodate the movable bridge 26 and a member 28 for elastic return. This resilient return member 28 is for example a helical compression spring.

L'organe 28 de rappel élastique autorise un déplacement selon l'axe de déplacement X du pont mobile 26 par rapport à la cage 24.The elastic return member 28 allows movement along the axis of movement X of the movable bridge 26 relative to the cage 24.

L'organe 28 de rappel élastique ramène le pont mobile 26 en direction des contacts fixes 8 et permet d'amortir le choc subi par le contact mobile 12 lors de la mise en contact des pastilles de contact mobiles 16 contre les pastilles de contact fixes 14, lors de la fermeture de l'élément de coupure 4.The elastic return member 28 brings back the movable bridge 26 in the direction of the fixed contacts 8 and makes it possible to absorb the shock undergone by the movable contact 12 when the movable contact pads 16 come into contact with the fixed contact pads 14 , when closing the cut-off element 4.

Le pont mobile 26 est déplaçable en translation par rapport à la cage 24 selon l'axe de déplacement X. La cage 24 est déplaçable en translation par rapport au corps 22 le même axe de déplacement X. Cependant, la translation de la cage 24 par rapport au corps 22 est découplée de la translation du pont mobile 26 par rapport à la cage 24. En d'autres termes, les deux translations sont indépendantes l'une de l'autre.The movable bridge 26 is movable in translation with respect to the cage 24 along the axis of movement X. The cage 24 is movable in translation with respect to the body 22 the same axis of movement X. However, the translation of the cage 24 by relative to the body 22 is decoupled from the translation of the movable bridge 26 relative to the cage 24. In other words, the two translations are independent of one another.

Selon une variante non illustrée, le pont mobile 26 peut être maintenu solidaire de la cage 24, l'organe 28 de rappel élastique pouvant alors être omis.According to a variant not shown, the movable bridge 26 can be kept integral with the cage 24, the elastic return member 28 then being able to be omitted.

L'élément de coupure 4 comporte en outre une butée mobile 60, ici disposée entre la face arrière 46 de la cage 24 et la paroi arrière 40 du corps 22. Autrement dit, la butée mobile 60 est disposée à l'intérieur du premier logement 34, en arrière de la face arrière 46.The cut-off element 4 further comprises a movable stop 60, here disposed between the rear face 46 of the cage 24 and the rear wall 40 of the body 22. In other words, the movable stop 60 is disposed inside the first housing. 34, behind the rear face 46.

La butée mobile 60 est déplaçable en translation selon l'axe de déplacement X et limite un recul de la cage 24 lorsque la partie mobile 20 arrive dans la position d'ouverture.The movable stop 60 is movable in translation along the axis of movement X and limits a retreat of the cage 24 when the movable part 20 arrives in the open position.

Dans ce mode de réalisation, la butée mobile 60 est solidarisée à une vis de réglage 62.In this embodiment, the movable stop 60 is secured to an adjustment screw 62.

La vis de réglage 62 comporte ici une tête 64 et une tige 66. Un trou 42, préférentiellement taraudé, traversant la paroi arrière 40 du corps 22, et un orifice 54 traversant la face arrière 46 de la cage 24 accueillent la tige 66 de la vis de réglage 62. Le trou 42 et l'orifice 54 sont chacun coaxial à l'axe de déplacement X.The adjustment screw 62 here comprises a head 64 and a rod 66. A hole 42, preferably threaded, passing through the rear wall 40 of the body 22, and an orifice 54 passing through the rear face 46 of the cage 24 accommodate the rod 66 of the adjusting screw 62. Hole 42 and orifice 54 are each coaxial with the axis of movement X.

Par exemple, la tige 66 forme ainsi une liaison préférentiellement hélicoïdale avec le trou 42. Cette liaison hélicoïdale permet ici le déplacement de la butée mobile 60 le long de l'axe de déplacement X.For example, the rod 66 thus forms a preferentially helical connection with the hole 42. This helical connection here allows the movement of the movable stop 60 along the axis of movement X.

La tête 64 de la vis de réglage 62 se situe à l'extérieur du corps 22, à l'opposé de l'organe de liaison 30 le long de l'axe X. En d'autres termes, la tête 64 dépasse de la paroi arrière 40 du corps 22, de manière à être accessible depuis l'extérieur afin de pouvoir être actionnée par un outil 80, tel qu'un tournevis.The head 64 of the adjusting screw 62 is located on the outside of the body 22, opposite the link member 30 along the X axis. In other words, the head 64 protrudes from the body. rear wall 40 of body 22, so as to be accessible from the outside in order to be able to be actuated by a tool 80, such as a screwdriver.

Dans ce mode de réalisation, la butée mobile 60 est une collerette rapportée sur la tige 66 de la vis de réglage 62, de manière à être solidaire en rotation avec la tige 66 lorsque celle-ci tourne autour de l'axe X. Cette collerette peut prendre la forme d'un disque centré sur l'axe de déplacement X.In this embodiment, the movable stop 60 is a flange attached to the rod 66 of the adjustment screw 62, so as to be integral in rotation with the rod 66 when the latter rotates around the X axis. This collar may take the form of a disc centered on the X displacement axis.

La collerette de la butée mobile 60 peut être rapprochée de la face arrière 46 de la cage 24 afin de limiter le déplacement de la cage 24 par rapport au corps 22. Lorsque l'outil 80 fait tourner la vis de réglage 62 vers un état serré, il se produit une translation de l'arrière à l'avant de la butée mobile 60 le long de l'axe de déplacement X, ce qui entraîne en translation la cage 24 par rapport au corps 22 le long de l'axe de déplacement X, de l'arrière à l'avant.The flange of the movable stopper 60 can be brought closer to the rear face 46 of the cage 24 in order to limit the movement of the cage 24 relative to the body 22. When the tool 80 turns the adjustment screw 62 towards a tight state , there is a translation from the rear to the front of the movable stop 60 along the axis of movement X, which translates the cage 24 relative to the body 22 along the axis of movement X, from back to front.

En revanche, la butée mobile 60 reste immobile tant que la vis de réglage 62 n'est pas tournée par l'outil 80, par exemple parce qu'un filetage de la tige 66 est engagé avec le taraudage de trou 42.On the other hand, the movable stop 60 remains stationary as long as the adjustment screw 62 is not turned by the tool 80, for example because a thread of the rod 66 is engaged with the tapping hole 42.

Lorsque la vis de réglage 62 est dans un état desserrée, la butée mobile 60 est dans une position reculée à l'arrière de l'appareil 2. La cage 24 n'est pas contrainte de rester en position avancée par la butée mobile 60 et la cage 24 se trouve alors dans une position « flottante ».When the adjustment screw 62 is in a loosened state, the movable stopper 60 is in a retracted position at the rear of the apparatus 2. The cage 24 is not constrained to remain in the advanced position by the movable stopper 60 and the cage 24 is then in a “floating” position.

Lorsque les contacts fixes 8 rencontrent les contacts mobiles 12, la cage 24 est ramenée de l'avant à l'arrière jusqu'à venir en butée contre la butée mobile 60 et la cage 24 se trouve alors en position reculée. La position exacte de la cage 24 peut alors être ajustée à l'aide de la vis de réglage 62, par exemple au moyen de l'outil 80, en vue de compenser un éventuel désalignement avec les contacts mobiles 12 des autres éléments de coupure 4.When the fixed contacts 8 meet the movable contacts 12, the cage 24 is brought back from the front to the rear until it comes into abutment against the movable stop 60 and the cage 24 is then in the retracted position. The exact position of the cage 24 can then be adjusted using the adjusting screw 62, for example by means of the tool 80, with a view to compensating for any misalignment with the movable contacts 12 of the other cut-off elements 4. .

Deux positions possibles pour la butée mobile 60 sont indiquées aux figures 4 et 5. Les espacements e1 sur la figure 4 et e2 sur la figure 5 correspondent à la distance entre la face intérieure de la paroi avant 41 du corps 22 et la face avant 48 de la cage 24, ici lorsque la cage 24 est en butée contre la butée mobile 60.Two possible positions for the movable stop 60 are indicated in figures 4 and 5 . The spacings e1 on the figure 4 and e2 on the figure 5 correspond to the distance between the inside face of the front wall 41 of the body 22 and the front face 48 of the cage 24, here when the cage 24 is in abutment against the movable stop 60.

A titre d'exemple illustratif, les espacements e1 et e2 sont ici compris chacun entre 0,1mm et 1 mm.By way of illustrative example, the spacings e1 and e2 are here each between 0.1mm and 1mm.

Dans la configuration visible à la figure 4, l'espacement e1 est plus grand que l'espacement e2 de la figure 5.In the configuration visible at figure 4 , the spacing e1 is greater than the spacing e2 of the figure 5 .

Pour passer de l'espacement e1 à l'espacement e2, la cage 24 est translatée de la partie arrière de l'appareil de coupure 2 vers l'avant. La translation de la cage 24 par l'intermédiaire de la butée 60 et de la vis de réglage 62 permet de rapprocher le pont mobile 26 de l'actionneur 6, ce qui équivaut à régler précisément la position des contacts mobiles 12 solidaires du pont mobile 26 par rapport aux contacts fixes 8.To go from the spacing e1 to the spacing e2, the cage 24 is translated from the rear part of the switching device 2 towards the front. The translation of the cage 24 by means of the stop 60 and the adjustment screw 62 allows the movable bridge 26 to be brought closer to the actuator 6, which is equivalent to precisely adjusting the position of the movable contacts 12 integral with the movable bridge. 26 in relation to the fixed contacts 8.

Le réglage des éléments de coupure 4 a préférentiellement lieu en position fermée.The adjustment of the cut-off elements 4 preferably takes place in the closed position.

Le fait de translater la butée mobile 60 le long de l'axe de déplacement X permet de contrôler le déplacement de la cage 24 indépendamment du corps 22 de la partie mobile 20. Ceci permet donc de régler finement la position du contact mobile 12 en position de fermeture, afin de compenser un désalignement éventuel avec les autres contacts mobiles 12 lorsque ces derniers sont dans la position de fermeture.The fact of translating the movable stop 60 along the axis of movement X makes it possible to control the movement of the cage 24 independently of the body 22 of the movable part 20. This therefore makes it possible to finely adjust the position of the movable contact 12 in position. closing, in order to compensate for any misalignment with the other movable contacts 12 when the latter are in the closed position.

Autrement dit, la course en translation de chaque contact mobile 12 peut être allongée ou réduite de manière contrôlée. Le réglage de la course en translation peut être effectué pour chacun des éléments de coupure 4, indépendamment des autres éléments de coupure 4.In other words, the travel in translation of each movable contact 12 can be lengthened or reduced in a controlled manner. The translation travel can be adjusted for each of the cut-off elements 4, independently of the other cut-off elements 4.

Avantageusement, l'invention permet de procéder au réglage même lorsque les éléments de coupure 4 sont tous connectées à la même pièce mobile 32 de l'actionneur 6, contrairement au réglage décrit dans WO-2014/096582-A1 , dans lequel la fonction de réglage était assurée par une vis qui servait simultanément d'organe de liaison. Le réglage ne pouvait alors pas se faire en position de fermeture et devait être effectué en position d'ouverture. Au contraire, ici, la fonction de réglage et la fonction de liaison avec l'actionneur sont assurées indépendamment l'une de l'autre. La fonction de liaison entre l'actionneur 6 et le contact mobile 12 est dissociée de la fonction de réglage de la course, ce qui permet d'effectuer le réglage en position fermée même lorsque l'actionneur 6 est monté sur la face avant de l'appareil 2.Advantageously, the invention makes it possible to carry out the adjustment even when the cut-off elements 4 are all connected to the same moving part 32 of the actuator 6, unlike the adjustment described in WO-2014/096582-A1 , in which the adjustment function was provided by a screw which simultaneously served as a connecting member. The adjustment could not then be done in the closed position and had to be done in the open position. On the contrary, here, the adjustment function and the function of connection with the actuator are performed independently of one another. The link function between the actuator 6 and the movable contact 12 is separate from the stroke adjustment function, which makes it possible to carry out the adjustment in the closed position even when the actuator 6 is mounted on the front face of the device 2.

De préférence, chaque élément de coupure 4 comporte une rondelle 68 enfilée sur la tige 66 et interposée entre la tête 64 et la face extérieure de la paroi arrière 40 du corps 22. Cette rondelle 68 permet d'occuper l'espace créé entre la tête 64 et la face extérieure de la paroi arrière 40 lors de la variation de l'espacement entre la face intérieure de la paroi arrière 40 du corps 22 et la face arrière 46 de la cage 24. Par exemple, la rondelle 68 est en métal ou en matériau élastomère.Preferably, each cut-off element 4 comprises a washer 68 threaded onto the rod 66 and interposed between the head 64 and the outer face of the rear wall 40 of the body 22. This washer 68 makes it possible to occupy the space created between the head. 64 and the outer face of the rear wall 40 when varying the spacing between the inner face of the rear wall 40 of the body 22 and the rear face 46 of the cage 24. For example, the washer 68 is made of metal or made of elastomeric material.

Selon un mode de réalisation optionnel mais non obligatoire, la cage 24 est composée d'un matériau plastique, de préférence en forme de bande. Cette bande en matériau plastique présente une forme repliée de manière à former un cadre rectangulaire. Sous sa forme repliée, la paroi arrière 46 est perpendiculaire à l'axe de déplacement X. La paroi arrière 46 est adjacente aux deux parois latérales 50 et 52. Ces parois latérales 50 et 52 sont parallèles entre elles et adjacentes à la paroi avant 48 de la cage 24. La paroi avant 48 et la paroi arrière 46 sont parallèles entre elles. La paroi arrière 46 est dédoublée lorsque la bande repliée formant le cadre constitué de la paroi arrière 46, la paroi latérale 50, la paroi avant 48 et la paroi latérale 52 vient couvrir la paroi arrière 46.According to an optional but not compulsory embodiment, the cage 24 is made of a plastic material, preferably in the form of a strip. This strip of plastic material has a folded shape so as to form a rectangular frame. In its folded form, the rear wall 46 is perpendicular to the axis of movement X. The rear wall 46 is adjacent to the two side walls 50 and 52. These side walls 50 and 52 are mutually parallel and adjacent to the front wall 48. of the cage 24. The front wall 48 and the rear wall 46 are mutually parallel. The rear wall 46 is split when the folded strip forming the frame consisting of the wall rear 46, the side wall 50, the front wall 48 and the side wall 52 cover the rear wall 46.

Alternativement, la cage 24 peut avoir une autre forme, par exemple carrée ou cylindrique. La forme du logement 34 doit en toute circonstance être adaptée pour recevoir la cage 24.Alternatively, the cage 24 can have another shape, for example square or cylindrical. The shape of the housing 34 must in all circumstances be adapted to receive the cage 24.

Selon un mode préférentiel mais non obligatoire de l'invention, au moins l'une des faces latérales 50 ou 52 de la cage 24 comporte un premier relief 70 qui collabore par complémentarité de formes avec un deuxième relief 72 présent sur l'une des parois latérales 36 ou 38 du corps 22. Les liaisons ainsi formées par le premier relief 70 et le deuxième relief 72 maintiennent la cage 24 dans le logement 34 et la guident en translation selon l'axe de déplacement X.According to a preferred but not compulsory embodiment of the invention, at least one of the side faces 50 or 52 of the cage 24 comprises a first relief 70 which collaborates by complementarity of shapes with a second relief 72 present on one of the walls. side 36 or 38 of the body 22. The connections thus formed by the first relief 70 and the second relief 72 maintain the cage 24 in the housing 34 and guide it in translation along the axis of displacement X.

En particulier, le premier relief 70 collabore avec un troisième relief 74 présent sur le pont mobile 26 dans le but de maintenir le pont 26 à l'intérieur du deuxième logement 44 délimité par la cage 24, notamment pendant des opérations d'assemblage de l'élément de coupure 4.In particular, the first relief 70 collaborates with a third relief 74 present on the movable bridge 26 in order to maintain the bridge 26 inside the second housing 44 delimited by the cage 24, in particular during assembly operations of the 'cut-off element 4.

Claims (9)

  1. Interrupting apparatus (2) for an electric current, comprising:
    - at least one interrupting element (4), each interrupting element comprising:
    • a fixed portion which carries fixed electrical contacts (8) and
    • a movable portion (20) which carries a movable electrical contact (12), the movable portion being displaceable in translation, along a displacement axis (X), between an open position and a closed position of the electrical contacts;
    - an actuator (6) comprising a movable part (32) which is displaceable in translation along the displacement axis (X) in order to displace the movable portion (20) between its open and closed positions, each movable part (32) comprising to this end a linking member (30) which is fixed to the movable portion (20), each movable portion (20) comprising a body (22) which comprises a first receiver (34);
    the interrupting apparatus (2) being characterised in that each interrupting element (4) further comprises:
    - a cage (24) which is mounted in the first receiver (34), the cage (24) being displaceable in translation along the displacement axis (X) relative to the body (22) of the movable portion (20), the cage (24) being connected to a support (26) carrying the movable contact (12), and
    - a movable stop (60) which limits the displacement of the cage (24) relative to the body (22) of the movable portion (20), the movable stop (60) being displaceable, in translation relative to the body (22) of the movable portion (20) and along the displacement axis (X), by means of an adjusting screw (62).
  2. Interrupting apparatus according to claim 1, characterised in that the head (64) of the adjusting screw (62) is arranged, within the movable portion (20), opposite the linking member (30) along the displacement axis (X).
  3. Interrupting apparatus according to claim 1 or 2, characterised in that the movable stop (60) is a collar integrated into a shank (66) of the adjusting screw (62), the collar being secured in rotation with the shank (66).
  4. Interrupting apparatus according to any one of claims 1 to 3, characterised in that the cage (24) comprises a rear face (46) perpendicular to the displacement axis (X), the movable stop (60) being arranged inside the first receiver (34) behind the rear face (46) so as to prevent a backward movement of the cage (24) when the movable portion (20) reaches the open position.
  5. Interrupting apparatus according to any one of the preceding claims, characterised in that each interrupting element (4) comprises a washer (68) arranged between the head (64) of the adjusting screw (62) and a rear wall (40) of the body (22) of the movable portion (20).
  6. Interrupting apparatus according to any one of the preceding claims, characterised in that the cage (24) delimits a second receiver (44), in that the support (26) is mounted in the second receiver (44), in that the support (26) is displaceable in translation relative to the cage (24), within the second receiver (44) along the displacement axis (X), and in that the cage (24) comprises a resilient return member (28) arranged in the second receiver (44), which return member returns the support (26) in the direction towards the fixed contacts (8).
  7. Interrupting apparatus according to any one of the preceding claims, characterised in that at least one lateral wall of the cage (24) comprises a first relief (70) which is to cooperate by shape complementarity with a second relief (72) present on an inside face of the first receiver (34), in order to hold the cage (24) and guide it in translation relative to the body (22) of the movable portion (20).
  8. Interrupting apparatus according to any one of the preceding claims, characterised in that the cage (24) is made of plastics material.
  9. Interrupting apparatus according to any one of the preceding claims, characterised in that the apparatus (2) is a multipolar interrupting apparatus adapted to interrupt a polyphase electric current, the interrupting apparatus comprising a plurality of interrupting elements (4), each interrupting element (4) being associated with a phase of the electric current.
EP19207678.4A 2018-11-08 2019-11-07 Apparatus for interrupting an electric current Active EP3651171B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1860291A FR3088477B1 (en) 2018-11-08 2018-11-08 ELECTRIC CURRENT CUTTING DEVICE

Publications (2)

Publication Number Publication Date
EP3651171A1 EP3651171A1 (en) 2020-05-13
EP3651171B1 true EP3651171B1 (en) 2021-10-27

Family

ID=65685694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19207678.4A Active EP3651171B1 (en) 2018-11-08 2019-11-07 Apparatus for interrupting an electric current

Country Status (3)

Country Link
EP (1) EP3651171B1 (en)
CN (1) CN111161980A (en)
FR (1) FR3088477B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1386460A (en) * 1963-12-12 1965-01-22 Cem Comp Electro Mec Device for adjusting contacts of electrical contactors
FR2559308B1 (en) * 1984-02-03 1986-10-17 Telemecanique Electrique CONTACT EQUIPPED WITH A MAGNETIC COMPENSATOR WITH ADJUSTABLE RELEASE THRESHOLD AND CIRCUIT-BREAKER USING SUCH A CONTACT
FR2999778B1 (en) 2012-12-18 2015-01-02 Schneider Electric Ind Sas METHOD OF ADJUSTING THE STROKE STROKE OF THE ELECTRICAL CONTACTS OF A BLOCK, A BLOCK FOR CARRYING OUT SAID METHOD, AND A SWITCHING DEVICE COMPRISING SUCH A BLOCK.
JP6106528B2 (en) * 2013-06-05 2017-04-05 株式会社日立産機システム Contactor operation device
US9373471B2 (en) * 2013-12-02 2016-06-21 Tesla Motors, Inc. Electromagnetic switch with damping interface
US20170062161A1 (en) * 2014-02-25 2017-03-02 Uchiya Thermostat Co., Ltd. Temperature switch

Also Published As

Publication number Publication date
EP3651171A1 (en) 2020-05-13
CN111161980A (en) 2020-05-15
FR3088477A1 (en) 2020-05-15
FR3088477B1 (en) 2020-12-04

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