EP1993115A1 - Device for controlling the connection and disconnection of two parts and electrical appliance comprising such a device - Google Patents

Device for controlling the connection and disconnection of two parts and electrical appliance comprising such a device Download PDF

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Publication number
EP1993115A1
EP1993115A1 EP08354019A EP08354019A EP1993115A1 EP 1993115 A1 EP1993115 A1 EP 1993115A1 EP 08354019 A EP08354019 A EP 08354019A EP 08354019 A EP08354019 A EP 08354019A EP 1993115 A1 EP1993115 A1 EP 1993115A1
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EP
European Patent Office
Prior art keywords
spring
operating shaft
contact
parts
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08354019A
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German (de)
French (fr)
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EP1993115B1 (en
Inventor
Denis Perrin
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP1993115A1 publication Critical patent/EP1993115A1/en
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Publication of EP1993115B1 publication Critical patent/EP1993115B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3047—Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

Definitions

  • the present invention relates to a device for controlling the placing in contact or out of contact of two parts, at least one of which is movable relative to the other, comprising an operating shaft connected in an articulated manner relative to a frame, said shaft being adapted to be rotated between a first position corresponding to a contact position of the two parts and a second position corresponding to a so-called distance position of the two parts, a compression spring adapted to be compressed by said shaft and to act during its decompression on the moving part so as to bring said movable part in a position of contact with the fixed part and means for separating the two parts able to bring the two aforementioned parts in the aforementioned removal position, said spring cooperating by one said one of its ends, with the operating shaft by its opposite end said second, with the piece mo bile.
  • This device ensuring the control of a sectioning or a grounding.
  • This device comprises an operating shaft rotatably mounted relative to a frame and hingedly connected to one end of a spring system whose opposite end is hingedly connected to an output shaft connected in an articulated manner. auditing and controlling the movement of the moving part.
  • the ground is effected by a rotation of the actuating shaft causing compression of the spring until a dead point.
  • the operating shaft continues its rotation by a few degrees by releasing a hooking roller via a connecting rod.
  • the roller thus released, the output shaft rotates under the action of the spring, and causes the cutting of the contacts.
  • the latter drives the latching roller to bring it into contact with a stop.
  • the opening to the ground is performed by the reverse rotation of the operating shaft.
  • the connecting rod then drives the roller, which in turn drives the output shaft.
  • the present invention relates to a device for controlling the contacting and the putting out of contact of two parts relative to each other, of simple design, which allows the two parts to come into contact with a speed independent of each other. the operator and to ensure a significant contact pressure.
  • the subject of the present invention is a device for controlling the placing in contact or out of contact of two parts of the kind mentioned above, this device being characterized in that it comprises return means for returning the exerted force by the first end of the spring during its decompression, on the moving part, so that said movable part receives two forces exerted respectively by the two ends of the spring, the resultant of the two forces corresponding to these two forces to ensure a clamping important between the two parts mentioned above.
  • these return means comprise a driving rod connected in an articulated manner by one of its ends, said first, to the operating shaft, and by its opposite end said second, to the moving part.
  • the maneuvering shaft comprises two ends disposed on either side of its axis of articulation to the frame, the spring is connected in an articulated manner by its so-called first end, on the one so-called second ends of the operating shaft, and its so-called second end, is hingedly connected to the moving part.
  • the distance separating, on the one hand, the axis of articulation of the operating shaft from the frame, and, on the other hand, the axis of articulation of the connecting rod to the operating shaft corresponds substantially to the distance separating the axis of articulation of the shaft from the housing and the axis of articulation of the first end of the spring to said shaft.
  • the operating shaft, the connecting rod and the spring are dimensioned in such a way that the evolution of the lever arms during the placing in contact of the fixed and moving parts makes it possible to compensate for the decrease in the effort the spring during its elongation, so that a constant force is applied to the movable contact.
  • the aforementioned device can take three stable positions, namely a closed equilibrium position in which the parts are in contact and the spring in partially decompressed position, an open equilibrium position in which the parts are separated and the spring in a fully compressed position and a neutral position in which the parts are separated and the three axes of articulation respectively of the connecting rod on the operating shaft, the spring on the operating shaft, and the spring on the movable contact, are aligned in which position the direction of the forces transmitted by the spring is such that no torque is applied to the operating shaft and position beyond which the spring becomes motor and causes the operating shaft and the movable contact.
  • the operating shaft comprises a stop adapted to cooperate with the connecting rod to limit the rotational travel of the operating shaft beyond the neutral position of the passage position, after an opening maneuver.
  • the present invention also relates to an electrical protection apparatus comprising a fixed contact and a movable contact, the movable contact being controlled by a control device having the aforementioned characteristics taken alone or in combination.
  • the movable contact is a ground contact.
  • it is an earthing switch having a closing power.
  • a control device O of the contacts of an earthing switch comprises an operating shaft 1 connected in an articulated manner along an axis X to a frame 2.
  • This operating shaft is also connected in an articulated manner (Y) by one of its ends, at one end 3a of the ends of a drive rod 3, and its opposite end 1b (Z), to a compression spring 4.
  • This rod of drive 3 and the compression spring 4 are connected to each other in a manner articulated by their other end 3b, 4b, to a connecting axis U, this connecting axis U being connected in an articulated manner on the one hand, to a movable contact 6, and on the other hand, to a connected connecting rod 7 also articulated to the frame.
  • the fixed contact 5 is rigidly connected to the frame to withstand the efforts of maintaining in the closed position the two contacts 5,6.
  • This device has two stable equilibrium positions and an unstable equilibrium position.
  • the first stable equilibrium position is the open position represented on the figure 1 . In this position, the driving rod 3 is in abutment on an opening stop 8 secured to the operating shaft 1.
  • the second stable equilibrium position is the closed position represented on the figure 3 . In this position, the moving contact is in abutment on the fixed contact.
  • the unstable equilibrium position represented on the figure 2 is that in which the three axes of articulation respectively, the Y axis of articulation of the connecting rod 3 on the shaft 1, the axis Z of articulation of the shaft 1 to the spring 4 and the axis U of articulation of the connecting rod 3 on the movable contact 6, are aligned.
  • this position called the neutral passage
  • the direction of the force transmitted by the spring is such that no torque is applied to the operating shaft.
  • the assembly can therefore switch either to the open position or to the closed position.
  • the mechanism operates autonomously under the action of the compression spring as will be explained in the following.
  • the operating shaft is subjected to a torque exerted by two forces, which forces vary according to the length of the spring and according to the evolution of the lever arms D1 ', D2' ( figure 4 ).
  • the first force, called F1 is exerted directly by the lower end of the spring 4b and is retransmitted to the operating shaft 1 via the driving rod 3.
  • the second force named F2 is the result of the force transmitted to the actuating shaft 1 by the upper end 4a of the spring 4.
  • This second force F2 is retransmitted along F3 to the movable contact 6 via the two lever arms D1 and D2.
  • the resultant R of the forces applied to the moving contact is therefore about twice the force provided by the first end 4a of the spring 4.
  • the value of this effort resultant R varies very little regardless of the position of the fixed contact 5 during the last two thirds of the race as illustrated in FIG. figure 5 .
  • the variation of the lever arms D1 'and D2' makes it possible to compensate for the drop in the force of the spring during its elongation. The lower the F1 and F2 forces, the more the effort F3 increases.
  • a control device has thus been produced according to the invention making it possible to bring the mobile contact against the fixed contact with a speed independent of the operator.
  • this device ensures, thanks to the compression spring, a significant contact pressure to allow the flow of current.
  • the system is maintained open position by contacting the drive rod on a workpiece forming a stop of the operating shaft under the action of the compression spring.
  • the use of the force of both ends of the spring allows the use of a lower force spring (about half the contact force to obtain).
  • the evolution of the lever arms during the closure of the contacts to compensate for the decrease in the spring force on the last two thirds of the race, it follows a retransmitted effort on the contacts that remains constant on a large race.
  • This principle is well suited for driving contacts when significant end-of-travel forces are required (eg end-to-end contacts), see all contacts that require overtravel to compensate for wear, matting, etc. It is applicable to all electrical functions without breaking capacity, especially of the disconnector type.
  • This principle can be used to simply apply a holding force (ex: clamping), clamping several parts together. It is also well suited for all earthing switch functions with breaking capacity. For other applications, it can be coupled to a shaft to transform the linear output movement into a rotational movement. It can also be associated with a cam system to adapt the efforts transmitted to specific needs. It can also be used, with the disengagement of the operating shaft and the drive rod, for all switch functions, or even circuit breakers with the attachment setting for tripping.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

The device has returning units for returning effort exerted on an operating shaft (1) by an end of a compression spring (4) during decompressing of the spring on a movable contact (6), such that the movable contact receives two efforts exerted by two ends (4a, 4b) of the spring, where resultant of two forces (F1, F2) corresponding to the two efforts permits assuring locking between the movable contact and a fixed contact (5). The returning units include a driving rod (3) connected in an articulated manner by the end (3a) to the shaft, and by an opposite end (3b) to the movable contact.

Description

La présente invention concerne un dispositif de commande de la mise en contact ou hors contact de deux pièces dont l'une au moins est mobile par rapport à l'autre, comprenant un arbre de manoeuvre relié de manière articulé par rapport à un bâti, ledit arbre étant apte à être entraîné en rotation entre une première position correspondant à une position de contact des deux pièces et une seconde position correspondant à une position dite d'éloignement des deux pièces, un ressort de compression apte à être comprimé par le ledit arbre et à agir lors de sa décompression sur la pièce mobile de manière à amener ladite pièce mobile dans une position de contact avec la pièce fixe et des moyens de séparation des deux pièces aptes à amener les deux pièces précitées dans la position d'éloignement précitée, ledit ressort coopérant par l'une dite première de ses extrémités, avec l'arbre de manoeuvre par son extrémité opposée dite seconde, avec la pièce mobile.The present invention relates to a device for controlling the placing in contact or out of contact of two parts, at least one of which is movable relative to the other, comprising an operating shaft connected in an articulated manner relative to a frame, said shaft being adapted to be rotated between a first position corresponding to a contact position of the two parts and a second position corresponding to a so-called distance position of the two parts, a compression spring adapted to be compressed by said shaft and to act during its decompression on the moving part so as to bring said movable part in a position of contact with the fixed part and means for separating the two parts able to bring the two aforementioned parts in the aforementioned removal position, said spring cooperating by one said one of its ends, with the operating shaft by its opposite end said second, with the piece mo bile.

On connaît un dispositif de commande du genre précédemment mentionné tel que décrit dans le document FR 2 609 839 , ce dispositif assurant la commande d'un sectionnement ou d'une mise à la terre. Ce dispositif comporte un arbre de manoeuvre monté rotatif par rapport à un bâti et relié de manière articulé à l'une des extrémités d'un système à ressort dont l'extrémité opposée est reliée de manière articulée à un arbre de sortie relié de manière articulée audit bâti et commandant le déplacement de la pièce mobile.
Dans ce dispositif, la mise à la terre s'effectue par une rotation de l'arbre de manoeuvre entraînant la compression du ressort jusqu'au passage d'un point mort. Sous l'action du ressort, l'arbre de manoeuvre continue sa rotation de quelques degrés en libérant un galet d'accrochage par l'intermédiaire d'une bielle de liaison. Le galet ainsi libéré, l'arbre de sortie tourne sous l'action du ressort, et entraîne le sectionnement des contacts. Pendant cette rotation de l'arbre de sortie, ce dernier entraîne le galet d'accrochage jusqu'à l'amener en contact sur une butée.
L'ouverture à la terre est effectuée par la rotation inverse de l'arbre de manoeuvre. La bielle de liaison entraîne alors le galet, lequel entraîne à son tour l'arbre de sortie.There is known a control device of the kind mentioned above as described in document FR 2,609,839 , this device ensuring the control of a sectioning or a grounding. This device comprises an operating shaft rotatably mounted relative to a frame and hingedly connected to one end of a spring system whose opposite end is hingedly connected to an output shaft connected in an articulated manner. auditing and controlling the movement of the moving part.
In this device, the ground is effected by a rotation of the actuating shaft causing compression of the spring until a dead point. Under the action of the spring, the operating shaft continues its rotation by a few degrees by releasing a hooking roller via a connecting rod. The roller thus released, the output shaft rotates under the action of the spring, and causes the cutting of the contacts. During this rotation of the output shaft, the latter drives the latching roller to bring it into contact with a stop.
The opening to the ground is performed by the reverse rotation of the operating shaft. The connecting rod then drives the roller, which in turn drives the output shaft.

Dans un mécanisme de ce type, l'effort du ressort d'entraînement diminue en fonction de sa course. Pour obtenir un effort important lorsque les contacts sont fermés, il faut soit mettre un ressort très puissant, soit utiliser un système d'embiellage s'approchant d'un point mort, système qui nécessite une bonne maîtrise dimensionnelle et donc des réglages. En outre, pendant la phase de compression du ressort, il est nécessaire de maintenir l'arbre de sortie dans sa position grâce à un système d'accrochage sous la forme d'un galet, et de le libérer une fois le ressort comprimé.In a mechanism of this type, the effort of the drive spring decreases as a function of its stroke. To obtain a great effort when the contacts are closed, it is necessary either to put a very powerful spring, or to use a system of crankshaft approaching a neutral point, system which requires a good dimensional control and thus adjustments. In addition, during the compression phase of the spring, it is necessary to maintain the output shaft in its position by means of a fastening system in the form of a roller, and to release it once the spring compressed.

La présente invention concerne un dispositif de commande de la mise en contact et de la mise hors contact de deux pièces l'une par rapport à l'autre, de conception simple, qui permette la mise en contact des deux pièces avec une vitesse indépendante de l'opérateur et permettant d'assurer une pression de contact importante.The present invention relates to a device for controlling the contacting and the putting out of contact of two parts relative to each other, of simple design, which allows the two parts to come into contact with a speed independent of each other. the operator and to ensure a significant contact pressure.

A cet effet, la présente invention a pour objet un dispositif de commande de la mise en contact ou hors contact de deux pièces du genre précédemment mentionné, ce dispositif étant caractérisé en ce qu'il comporte des moyens de renvoi pour renvoyer l'effort exercé par la première extrémité du ressort lors de sa décompression, sur la pièce mobile, de manière que ladite pièce mobile reçoive deux efforts exercés respectivement par les deux extrémités du ressort, la résultante des deux forces correspondant à ces deux efforts permettant d'assurer un serrage important entre les deux pièces précitées.For this purpose, the subject of the present invention is a device for controlling the placing in contact or out of contact of two parts of the kind mentioned above, this device being characterized in that it comprises return means for returning the exerted force by the first end of the spring during its decompression, on the moving part, so that said movable part receives two forces exerted respectively by the two ends of the spring, the resultant of the two forces corresponding to these two forces to ensure a clamping important between the two parts mentioned above.

Selon une réalisation particulière de l'invention, ces moyens de renvoi comportent une bielle d'entraînement reliée de manière articulée par l'une de ses extrémités, dite première, à l'arbre de manoeuvre, et par son extrémité opposée dite seconde, à la pièce mobile.According to a particular embodiment of the invention, these return means comprise a driving rod connected in an articulated manner by one of its ends, said first, to the operating shaft, and by its opposite end said second, to the moving part.

Selon une caractéristique particulière de l'invention, l'arbre de manoeuvre comporte deux extrémités disposées de part et d'autre de son axe d'articulation au bâti, le ressort est relié de manière articulée par son extrémité dite première, sur l'une des extrémités dite seconde de l'arbre de manoeuvre, et par son extrémité dite seconde, est relié de manière articulé à la pièce mobile.According to a particular characteristic of the invention, the maneuvering shaft comprises two ends disposed on either side of its axis of articulation to the frame, the spring is connected in an articulated manner by its so-called first end, on the one so-called second ends of the operating shaft, and its so-called second end, is hingedly connected to the moving part.

Selon une autre caractéristique particulière, la distance séparant d'une part, l'axe d'articulation de l'arbre de manoeuvre au bâti, et d'autre part, l'axe d'articulation de la bielle à l'arbre de manoeuvre, correspond sensiblement à la distance séparant l'axe d'articulation de l'arbre au boîtier et l'axe d'articulation de la première extrémité du ressort audit arbre.According to another particular characteristic, the distance separating, on the one hand, the axis of articulation of the operating shaft from the frame, and, on the other hand, the axis of articulation of the connecting rod to the operating shaft. , corresponds substantially to the distance separating the axis of articulation of the shaft from the housing and the axis of articulation of the first end of the spring to said shaft.

Selon une autre caractéristique, l'arbre de manoeuvre, la bielle et le ressort sont dimensionnés de telle manière que l'évolution des bras de levier lors de la mise en contacts des pièces fixe et mobile, permette de compenser la diminution de l'effort du ressort lors de son allongement, afin qu'un effort constant soit appliqué sur le contact mobile.According to another characteristic, the operating shaft, the connecting rod and the spring are dimensioned in such a way that the evolution of the lever arms during the placing in contact of the fixed and moving parts makes it possible to compensate for the decrease in the effort the spring during its elongation, so that a constant force is applied to the movable contact.

Selon une autre caractéristique, le dispositif précité peut prendre trois positions stables, à savoir une position d'équilibre fermée dans laquelle les pièces sont en contact et le ressort en position partiellement décomprimé, une position d'équilibre ouverte dans laquelle les pièces sont séparées et le ressort dans une position totalement comprimée et une position de passage de point mort dans laquelle les pièces sont séparées et les trois axes d'articulation respectivement de la bielle sur l'arbre de manoeuvre, du ressort sur l'arbre de manoeuvre, et du ressort sur le contact mobile, sont alignés dans laquelle position la direction des efforts transmis par le ressort est telle qu'aucun couple n'est appliqué à l'arbre de manoeuvre et position au-delà de laquelle le ressort devient moteur et entraîne l'arbre de manoeuvre et le contact mobile.According to another characteristic, the aforementioned device can take three stable positions, namely a closed equilibrium position in which the parts are in contact and the spring in partially decompressed position, an open equilibrium position in which the parts are separated and the spring in a fully compressed position and a neutral position in which the parts are separated and the three axes of articulation respectively of the connecting rod on the operating shaft, the spring on the operating shaft, and the spring on the movable contact, are aligned in which position the direction of the forces transmitted by the spring is such that no torque is applied to the operating shaft and position beyond which the spring becomes motor and causes the operating shaft and the movable contact.

Selon une autre caractéristique, l'arbre de manoeuvre comporte une butée apte à coopérer avec la bielle pour limiter la course en rotation de l'arbre de manoeuvre au-delà de la position de passage du point mort, après une manoeuvre d'ouverture.According to another characteristic, the operating shaft comprises a stop adapted to cooperate with the connecting rod to limit the rotational travel of the operating shaft beyond the neutral position of the passage position, after an opening maneuver.

La présente invention a encore pour objet un appareil de protection électrique comportant un contact fixe et un contact mobile, le contact mobile étant commandé par un dispositif de commande comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.The present invention also relates to an electrical protection apparatus comprising a fixed contact and a movable contact, the movable contact being controlled by a control device having the aforementioned characteristics taken alone or in combination.

Selon une caractéristique particulière de l'invention, le contact mobile est un contact de mise à la terre.According to a particular characteristic of the invention, the movable contact is a ground contact.

Selon une autre caractéristique particulière, c'est un sectionneur de mise à la terre présentant un pouvoir de fermeture.According to another particular characteristic, it is an earthing switch having a closing power.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La figure 1 est une vue partielle de côté d'un dispositif de commande d'un appareil électrique selon l'invention, dans un position ouverte des contacts,
  • La figure 2 est une vue identique à la figure précédente, le dispositif étant dans une position d'équilibre instable,
  • La figure 3 est une vue identique aux précédentes, le dispositif étant dans une position d'équilibre fermée,
  • La figure 4 est une vue identique aux précédentes, le dispositif étant dans une position intermédiaire entre la position d'équilibre instable précitée de la figure 2 et la position d'équilibre fermée de la figure 3, et
  • La figure 5 est une représentation graphique illustrant l'effort moteur E en DaN exercé par le ressort sur le contact mobile en fonction de la course C du contact mobile en mm.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a partial side view of a control device of an electrical apparatus according to the invention, in an open position of the contacts,
  • The figure 2 is a view identical to the previous figure, the device being in a position of unstable equilibrium,
  • The figure 3 is a view identical to the previous ones, the device being in a closed equilibrium position,
  • The figure 4 is a view identical to the previous ones, the device being in an intermediate position between the aforementioned unstable equilibrium position of the figure 2 and the closed equilibrium position of the figure 3 , and
  • The figure 5 is a graphical representation illustrating the drive force E in DaN exerted by the spring on the movable contact as a function of the travel C of the moving contact in mm.

Sur les figures 1 à 4, un dispositif de commande O des contacts d'un sectionneur de mise à la terre selon l'invention comporte un arbre de manoeuvre 1 relié de manière articulé selon un axe X à un bâti 2. Cet arbre de manoeuvre est également relié de manière articulée (en Y) par l'une la de ses extrémités, à l'une 3a des extrémités d'une bielle d'entraînement 3, et par son extrémité opposée 1b (Z), à un ressort de compression 4. Cette bielle d'entraînement 3 et le ressort de compression 4 sont reliés l'un à l'autre de manière articulée par leur autre extrémité 3b,4b, à un axe de liaison U, cet axe de liaison U étant relié de manière articulé d'une part, à un contact mobile 6, et d'autre part, à une bielle de guidage 7 reliée également de manière articulée au bâti. Le contact fixe 5 est relié rigidement au bâti afin de supporter les efforts de maintien en position fermée des deux contacts 5,6.
Ce dispositif possède deux positions d'équilibre stables et une position d'équilibre instable. La première position d'équilibre stable est la position ouverte représentée sur la figure 1. Dans cette position, la bielle d'entraînement 3 est en butée sur une butée d'ouverture 8 solidaire de l'arbre de manoeuvre 1.
La deuxième position d'équilibre stable est la position fermée représentée sur la figure 3. Dans cette position, le contact mobile est en butée sur le contact fixe.
La position d'équilibre instable représentée sur la figure 2 est celle dans laquelle les trois axes d'articulation respectivement, l'axe Y d'articulation de la bielle 3 sur l'arbre 1, l'axe Z d'articulation de l'arbre 1 au ressort 4 et l'axe U d'articulation de la bielle 3 sur le contact mobile 6, sont alignés. Dans cette position, appelée passage de point mort, la direction des effort transmis par le ressort est telle qu'aucun couple n'est appliqué à l'arbre de manoeuvre. L'ensemble peut donc basculer soit vers la position ouverte, soit vers la position fermée.
Pendant ces deux phases de basculement, le mécanisme fonctionne de manière autonome sous l'action du ressort de compression comme ceci sera expliqué dans ce qui suit.
Pendant cette manoeuvre autonome du mécanisme, l'arbre de manoeuvre est soumis à un couple exercé par deux forces, lesquelles forces varient en fonction de la longueur du ressort et en fonction de l'évolution des bras de levier D1',D2' (figure 4). La première force, nommée F1, est exercée directement par l'extrémité inférieure du ressort 4b et est retransmise à l'arbre de manoeuvre 1 par l'intermédiaire de la bielle d'entraînement 3. La deuxième force nommée F2, est le résultat de l'effort transmis à l'arbre de manoeuvre 1 par l'extrémité supérieure 4a du ressort 4. Cette seconde force F2 est retransmise selon F3 au contact mobile 6 par l'intermédiaire des deux bras de levier D1 et D2.
Lorsque le système quitte la position de passage du point mort, ce couple exercé sur l'arbre de manoeuvre, tend à le faire tourner soit dans le sens anti-horaire pour atteindre la position fermée, soit dans le sens horaire pour atteindre la position ouverte.On the Figures 1 to 4 a control device O of the contacts of an earthing switch according to the invention comprises an operating shaft 1 connected in an articulated manner along an axis X to a frame 2. This operating shaft is also connected in an articulated manner (Y) by one of its ends, at one end 3a of the ends of a drive rod 3, and its opposite end 1b (Z), to a compression spring 4. This rod of drive 3 and the compression spring 4 are connected to each other in a manner articulated by their other end 3b, 4b, to a connecting axis U, this connecting axis U being connected in an articulated manner on the one hand, to a movable contact 6, and on the other hand, to a connected connecting rod 7 also articulated to the frame. The fixed contact 5 is rigidly connected to the frame to withstand the efforts of maintaining in the closed position the two contacts 5,6.
This device has two stable equilibrium positions and an unstable equilibrium position. The first stable equilibrium position is the open position represented on the figure 1 . In this position, the driving rod 3 is in abutment on an opening stop 8 secured to the operating shaft 1.
The second stable equilibrium position is the closed position represented on the figure 3 . In this position, the moving contact is in abutment on the fixed contact.
The unstable equilibrium position represented on the figure 2 is that in which the three axes of articulation respectively, the Y axis of articulation of the connecting rod 3 on the shaft 1, the axis Z of articulation of the shaft 1 to the spring 4 and the axis U of articulation of the connecting rod 3 on the movable contact 6, are aligned. In this position, called the neutral passage, the direction of the force transmitted by the spring is such that no torque is applied to the operating shaft. The assembly can therefore switch either to the open position or to the closed position.
During these two tilting phases, the mechanism operates autonomously under the action of the compression spring as will be explained in the following.
During this autonomous maneuver of the mechanism, the operating shaft is subjected to a torque exerted by two forces, which forces vary according to the length of the spring and according to the evolution of the lever arms D1 ', D2' ( figure 4 ). The first force, called F1, is exerted directly by the lower end of the spring 4b and is retransmitted to the operating shaft 1 via the driving rod 3. The second force named F2, is the result of the force transmitted to the actuating shaft 1 by the upper end 4a of the spring 4. This second force F2 is retransmitted along F3 to the movable contact 6 via the two lever arms D1 and D2.
When the system leaves the neutral position of the passage, this torque exerted on the operating shaft, tends to rotate it in the counterclockwise direction to reach the closed position, or in the clockwise direction to reach the open position .

Pour réaliser la fermeture des contacts depuis la position ouverte illustrée sur la figure 1, il est donc nécessaire d'effectuer une action extérieure pour entraîner la rotation de l'arbre de manoeuvre dans le sens anti-horaire jusqu'à dépasser la ligne de passage de point mort, position illustrée sur la figure 2. Une fois cet alignement dépassé, le ressort 4 devient moteur et entraîne l'arbre 1 en rotation toujours dans ce même sens jusqu'à la fermeture des contacts (figure 3). Ceci est réalisé grâce à la décompression du ressort, lequel agit par l'intermédiaire de ses deux extrémités opposées 4a,4b en exerçant deux forces respectivement F1 agissant sur le contact mobile 6 et sur l'arbre de manoeuvre, et F2 agissant sur l'arbre de manoeuvre 1 et retransmise au contact mobile par la bielle 3.
Inversement, pour réaliser l'ouverture des contacts à partir de la position fermée illustrée sur la figure 3, il est nécessaire d'effectuer une action extérieure pour effectuer la rotation de l'arbre de manoeuvre 1 jusqu'à dépasser la position de passage de point mort illustrée sur la figure 2. Dans cette position, le ressort est dans un état de compression maximal.
Une fois cette position dépassée, le ressort devient moteur et par sa décompression, entraîne l'arbre en rotation jusqu'à ce que la butée d'ouverture 8 vienne en contact avec la bielle tel qu'illustré sur la figure 1.
L'analyse de la position d'équilibre fermée de la figure 3 montre que le dispositif permet d'une part d'appliquer directement l'effort F1 de l'extrémité inférieure du ressort 4 sur le contact mobile 6 et d'autre part, de renvoyer l'effort F2 sur le contact mobile 6 par l'intermédiaire de l'arbre de manoeuvre 1 et de la bielle d'entraînement 3. La résultante R des efforts appliqués au contact mobile est donc environ le double de l'effort fourni par la première extrémité 4a du ressort 4.
De plus, la valeur de cette résultante d'effort R varie très peu quelque soit la position du contact fixe 5 durant les deux derniers tiers de la course tel qu'illustré sur la figure 5. En effet, la variation des bras de levier D1' et D2' permet de compenser la baisse de l'effort du ressort lors de son allongement. Plus les efforts F1 et F2 baissent, plus l'effort F3 augmente.To close the contacts from the open position shown on the figure 1 , it is therefore necessary to perform an external action to cause the rotation of the operating shaft in the counter-clockwise direction to exceed the dead-center line, as shown in the figure. figure 2 . Once this alignment is exceeded, the spring 4 becomes motor and drives the shaft 1 in rotation in the same direction until the contacts are closed ( figure 3 ). This is achieved by the decompression of the spring, which acts through its two opposite ends 4a, 4b by exerting two forces respectively F1 acting on the movable contact 6 and on the operating shaft, and F2 acting on the operating shaft 1 and retransmitted to the moving contact by the connecting rod 3.
Conversely, to make the opening of the contacts from the closed position illustrated on the figure 3 , it is necessary to perform an external action to rotate the operating shaft 1 to exceed the neutral position shown on the figure 2 . In this position, the spring is in a state of maximum compression.
Once this position is exceeded, the spring becomes motor and by its decompression, drives the shaft in rotation until the opening stop 8 comes into contact with the rod as shown in FIG. figure 1 .
The analysis of the closed equilibrium position of the figure 3 shows that the device allows on the one hand to directly apply the force F1 of the lower end of the spring 4 on the movable contact 6 and on the other hand, to return the force F2 on the movable contact 6 by the intermediate of the operating shaft 1 and the drive rod 3. The resultant R of the forces applied to the moving contact is therefore about twice the force provided by the first end 4a of the spring 4.
In addition, the value of this effort resultant R varies very little regardless of the position of the fixed contact 5 during the last two thirds of the race as illustrated in FIG. figure 5 . Indeed, the variation of the lever arms D1 'and D2' makes it possible to compensate for the drop in the force of the spring during its elongation. The lower the F1 and F2 forces, the more the effort F3 increases.

On a donc réalisé selon l'invention un dispositif de commande permettant d'amener le contact mobile contre le contact fixe avec une vitesse indépendante de l'opérateur. En fin de mouvement, ce dispositif assure, grâce au ressort de compression, une pression de contact importante afin de permettre le passage du courant. Le système est maintenu en position ouverte grâce à la mise en contact de la bielle d'entraînement sur une pièce formant butée de l'arbre de manoeuvre sous l'action du ressort de compression.
L'utilisation de l'effort des deux extrémités du ressort permet l'utilisation d'un ressort de plus faible effort (environ la moitié de l'effort de contact à obtenir).
L'évolution des bras de levier lors de la fermeture des contacts permettant de compenser la diminution de l'effort du ressort sur les deux derniers tiers de la course, il en découle un effort retransmis sur les contacts qui reste constant sur une grande course.
Cette absence de variation d'effort en fonction de la course garantit un même niveau d'effort quelque soit l'érosion, le matage, le fluage, la perte de course, etc...des contacts.
Cette absence de variation d'effort en fonction de la course permet de se passer d'un dispositif d'enfoncement de contact ou d'un dispositif de réglage de la position d'entrée en contact.
Ce dispositif permet la minimisation du nombre de pièces, la compacité de l'ensemble, la réduction des coûts de réalisation.A control device has thus been produced according to the invention making it possible to bring the mobile contact against the fixed contact with a speed independent of the operator. At the end of the movement, this device ensures, thanks to the compression spring, a significant contact pressure to allow the flow of current. The system is maintained open position by contacting the drive rod on a workpiece forming a stop of the operating shaft under the action of the compression spring.
The use of the force of both ends of the spring allows the use of a lower force spring (about half the contact force to obtain).
The evolution of the lever arms during the closure of the contacts to compensate for the decrease in the spring force on the last two thirds of the race, it follows a retransmitted effort on the contacts that remains constant on a large race.
This absence of variation of effort according to the race guarantees the same level of effort irrespective of the erosion, the matting, the creep, the loss of race, etc ... contacts.
This absence of variation of effort as a function of the stroke makes it possible to dispense with a contact-pushing device or a device for adjusting the contacting position.
This device allows the minimization of the number of parts, the compactness of the whole, the reduction of the realization costs.

Ce principe est bien adapté pour l'entraînement des contacts lorsque des efforts en fin de course importants sont nécessaires (ex : contacts bout à bout), voir tous les contacts qui nécessitent une surcourse pour compenser une usure, un matage, etc...
Il est applicable à toutes les fonctions électriques sans pouvoir de coupure, notamment de type sectionneur.
Ce principe peut être utilisé pour appliquer simplement un effort de maintien (ex : bridage), de serrage de plusieurs pièces ensemble.
Il est également bien adapté pour toutes les fonctions sectionneur de mise à la terre avec pouvoir de coupure.
Pour d'autres applications, il peut être couplé à un arbre afin de transformer le mouvement linéaire de sortie en un mouvement de rotation. On peut également lui associer un système à came afin d'adapter les efforts transmis à des besoins particuliers.
Il peut aussi être utilisé, moyennant la désolidarisation de l'arbre de manoeuvre et de la bielle d'entraînement, pour toutes les fonctions interrupteurs, voir même disjoncteurs avec la mise en place d'accrochage pour le déclenchement.This principle is well suited for driving contacts when significant end-of-travel forces are required (eg end-to-end contacts), see all contacts that require overtravel to compensate for wear, matting, etc.
It is applicable to all electrical functions without breaking capacity, especially of the disconnector type.
This principle can be used to simply apply a holding force (ex: clamping), clamping several parts together.
It is also well suited for all earthing switch functions with breaking capacity.
For other applications, it can be coupled to a shaft to transform the linear output movement into a rotational movement. It can also be associated with a cam system to adapt the efforts transmitted to specific needs.
It can also be used, with the disengagement of the operating shaft and the drive rod, for all switch functions, or even circuit breakers with the attachment setting for tripping.

Bien entendu, l'invention n'est pas limitée aux modes de réalisations décrits et illustrés qui n'ont été donnés qu'à titre d'exemple.Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont réalisées suivant son esprit.On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are carried out according to its spirit.

Claims (10)

Dispositif de commande de la mise en contact ou hors contact de deux pièces dont l'une au moins est mobile par rapport à l'autre, comprenant un arbre de manoeuvre relié de manière articulé par rapport à un bâti, ledit arbre étant apte à être entraîné en rotation entre une première position correspondant à une position de contact des deux pièces et une seconde position correspondant à une position dite d'éloignement des deux pièces, un ressort de compression apte à être comprimé par ledit arbre et à agir lors de sa décompression sur la pièce mobile, de manière à amener ladite pièce mobile dans une position de contact avec la pièce fixe, et des moyens de séparation des deux pièces aptes à amener les deux pièces précitées dans la position d'éloignement précitée, ledit ressort coopérant par l'une dite première de ses extrémités, avec l'arbre de manoeuvre et par son extrémité opposée dite seconde, avec la pièce mobile,
caractérisé en ce qu'il comporte des moyens de renvoi (1,3) pour renvoyer l'effort exercé sur l'arbre de manoeuvre (1) par la première extrémité du ressort (4a) lors de sa décompression, sur la pièce mobile (6), de manière que ladite pièce mobile (6) reçoive deux efforts exercés respectivement par les deux extrémités (4a,4b) du ressort (4), la résultante des deux forces F1,F2 correspondant à ces deux efforts permettant d'assurer un serrage important entre les deux pièces précitées (5,6).Device for controlling the placing in contact or out of contact of two parts, at least one of which is movable relative to the other, comprising an operating shaft connected in an articulated manner with respect to a frame, said shaft being capable of being rotated between a first position corresponding to a contact position of the two parts and a second position corresponding to a so-called distance position of the two parts, a compression spring able to be compressed by said shaft and to act during its decompression on the moving part, so as to bring said movable part in a position of contact with the fixed part, and means for separating the two parts capable of bringing the two aforementioned parts into the aforementioned removal position, said spring cooperating with the a said first of its ends, with the operating shaft and its opposite end said second, with the moving part,
characterized in that it comprises return means (1,3) for returning the force exerted on the operating shaft (1) by the first end of the spring (4a) during its decompression, on the moving part ( 6), so that said movable part (6) receives two forces exerted respectively by the two ends (4a, 4b) of the spring (4), the resultant of the two forces F1, F2 corresponding to these two forces to ensure a significant tightening between the two aforementioned parts (5,6). Dispositif de commande selon la revendication 1, caractérisé en ce que ces moyens de renvoi comportent une bielle d'entraînement (3) reliée de manière articulée par l'une (3a) de ses extrémités, dite première, à l'arbre de manoeuvre (1), et par son extrémité opposée (3b) dite seconde, à la pièce mobile (6).Control device according to claim 1, characterized in that said return means comprise a driving rod (3) hingedly connected by one (3a) of its ends, said first, to the operating shaft ( 1), and by its opposite end (3b) said second, to the moving part (6). Dispositif de commande selon la revendication 2, caractérisé en ce que l'arbre de manoeuvre (1) comporte deux extrémités (1a,1b) disposées de part et d'autre de son axe d'articulation X au bâti, en ce que le ressort (4) est relié de manière articulé par son extrémité dite première (4a), sur l'une des extrémités (1b) dite seconde de l'arbre de manoeuvre, et par son extrémité dite seconde (4b), est relié de manière articulé à la pièce mobile (6).Control device according to claim 2, characterized in that the operating shaft (1) has two ends (1a, 1b) disposed on either side of its axis of articulation X to the frame, in that the spring (4) is articulately connected by its so-called first end (4a), on one end (1b) said second of the operating shaft, and its so-called second end (4b), is hingedly connected to the movable part (6). Dispositif de commande selon la revendication 3, caractérisé en ce que la distance séparant d'une part, l'axe d'articulation X de l'arbre de manoeuvre (1) au bâti (2), et d'autre part, l'axe d'articulation Y de la bielle (3) à l'arbre de manoeuvre (1), correspond sensiblement à la distance séparant d'une part l'axe d'articulation X de l'arbre (1) au bâti (2) et l'axe d'articulation de la première extrémité (4a) du ressort (4) audit arbre de manoeuvre (1).Control device according to claim 3, characterized in that the distance separating, on the one hand, the axis of articulation X from the operating shaft (1) to the frame (2), and on the other hand, the articulation axis Y of the connecting rod (3) to the operating shaft (1) corresponds substantially to the distance between the hinge axis X of the shaft (1) and the frame (2). and the axis of articulation of the first end (4a) of the spring (4) to said operating shaft (1). Dispositif de commande selon l'une quelconque des revendications 2 à 4, caractérisé en ce que l'arbre de manoeuvre (1), la bielle (3) et le ressort (4) sont dimensionnés de telle manière que l'évolution des bras de levier D1' et D2' lors de la mise en contact des pièces fixe et mobile (5,6) permette de compenser la diminution de l'effort du ressort (4) lors de son allongement, afin qu'un effort constant soit appliqué sur la pièce mobile (6).Control device according to any one of claims 2 to 4, characterized in that the operating shaft (1), the connecting rod (3) and the spring (4) are dimensioned in such a way that the evolution of the arms of lever D1 'and D2' during the contacting of the fixed and movable parts (5, 6) makes it possible to compensate for the decrease in the force of the spring (4) during its elongation, so that a constant force is applied to the moving part (6). Dispositif de commande selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le dispositif précité peut prendre trois positions stables, à savoir une position d'équilibre fermée dans laquelle les pièces (5,6) sont en contact et le ressort (4) en position partiellement décomprimé, une position d'équilibre ouverte dans laquelle les pièces (5,6) sont séparées et le ressort (4) dans une position totalement comprimée et une position de passage de point mort dans laquelle les pièces (5,6) sont séparées et les trois axes d'articulation respectivement l'axe d'articulation Y de la bielle (3) sur l'arbre de manoeuvre (1), l'axe d'articulation Z du ressort (4) sur l'arbre de manoeuvre (1), et l'axe d'articulation U du ressort (4) sur la pièce mobile (6), sont alignés, dans laquelle position la direction des efforts transmis par le ressort (4) est telle qu'aucun couple n'est appliqué à l'arbre de manoeuvre (1), et position au-delà de laquelle le ressort (4) devient moteur et entraîne l'arbre de manoeuvre (1) et la pièce mobile (6).Control device according to any one of claims 3 to 5, characterized in that the aforementioned device can take three stable positions, namely a closed equilibrium position in which the parts (5, 6) are in contact and the spring (4) in a partially decompressed position, an open equilibrium position in which the pieces (5, 6) are separated and the spring (4) in a fully compressed position and a neutral position in which the pieces (5) are separated; , 6) are separated and the three axes of articulation respectively the hinge axis Y of the connecting rod (3) on the operating shaft (1), the axis of articulation Z of the spring (4) on the the operating shaft (1), and the hinge axis U of the spring (4) on the moving part (6), are aligned, in which position the direction of the forces transmitted by the spring (4) is such that no torque is applied to the operating shaft (1), and position beyond which the spring (4) becomes a motor and drives the operating shaft (1) and the moving part (6). Dispositif de commande selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'arbre de manoeuvre (1) comporte une butée (8) apte à coopérer avec la bielle (3) pour limiter la course en rotation de l'arbre de manoeuvre (1) au-delà de la position de passage du point mort, après une manoeuvre d'ouverture.Control device according to any one of claims 2 to 6, characterized in that the operating shaft (1) comprises a stop (8) adapted to cooperate with the connecting rod (3) to limit the rotational stroke of the operating shaft (1) beyond the neutral position, after an opening maneuver. Appareil de protection électrique comportant un contact fixe (5) et un contact mobile (6), le contact mobile (6) étant commandé par un dispositif de commande D selon l'une quelconque des revendications précédentes.Electrical protection apparatus comprising a fixed contact (5) and a movable contact (6), the movable contact (6) being controlled by a control device D according to any one of the preceding claims. Appareil de protection électrique selon la revendication 8, caractérisé en ce que le contact mobile (6) est un contact de mise à la terre.Electrical protection device according to claim 8, characterized in that the movable contact (6) is a grounding contact. Appareil de protection électrique selon la revendication 9, caractérisé en ce que c'est un sectionneur de mise à la terre présentant un pouvoir de fermeture.Electrical protection device according to claim 9, characterized in that it is a grounding disconnector with a closing power.
EP20080354019 2007-05-15 2008-03-13 Device for controlling the connection and disconnection of two parts and electrical appliance comprising such a device Not-in-force EP1993115B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0703471A FR2916300B1 (en) 2007-05-15 2007-05-15 DEVICE FOR CONTROLLING THE CONTACT OR NON-CONTACT OF TWO PARTS AND AN ELECTRIC APPARATUS COMPRISING SUCH A DEVICE

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EP1993115A1 true EP1993115A1 (en) 2008-11-19
EP1993115B1 EP1993115B1 (en) 2012-12-12

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EP (1) EP1993115B1 (en)
CN (1) CN101308734B (en)
AU (1) AU2008202132B2 (en)
BR (1) BRPI0801341B1 (en)
ES (1) ES2396742T3 (en)
FR (1) FR2916300B1 (en)
RU (1) RU2453943C2 (en)

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Publication number Priority date Publication date Assignee Title
WO2012016618A1 (en) 2010-08-02 2012-02-09 Abb Technology Ag Drive for a switch disconnector with c o switching capacity
WO2020200951A1 (en) * 2019-03-29 2020-10-08 Siemens Aktiengesellschaft Spring system for a drive system comprising a coupling, spring system comprising a coupling, drive system comprising a coupling and a spring system and switchgear comprising such a drive system

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FR2609839A1 (en) 1987-01-21 1988-07-22 Merlin Gerin MECHANISM WITH CONTROL HOUSING OF A THREE POSITIONS CIRCUIT BREAKER

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DE1160928B (en) * 1959-11-24 1964-01-09 Erwin Wagner Switching device for electrical switches
EP0058585A1 (en) * 1981-02-13 1982-08-25 Merlin Gerin Operating mechanism for electrical switching apparatuses with three separate positions
FR2609839A1 (en) 1987-01-21 1988-07-22 Merlin Gerin MECHANISM WITH CONTROL HOUSING OF A THREE POSITIONS CIRCUIT BREAKER
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Publication number Priority date Publication date Assignee Title
WO2012016618A1 (en) 2010-08-02 2012-02-09 Abb Technology Ag Drive for a switch disconnector with c o switching capacity
US8890640B2 (en) 2010-08-02 2014-11-18 Abb Technology Ag Drive for a switch disconnector with C O switching capacity
WO2020200951A1 (en) * 2019-03-29 2020-10-08 Siemens Aktiengesellschaft Spring system for a drive system comprising a coupling, spring system comprising a coupling, drive system comprising a coupling and a spring system and switchgear comprising such a drive system
WO2020201000A1 (en) * 2019-03-29 2020-10-08 Siemens Aktiengesellschaft Coupling, spring system, drive system having a coupling and spring system, and switchgear comprising said drive system
CN113748476A (en) * 2019-03-29 2021-12-03 西门子股份公司 Spring system for a drive system having a coupling, spring system having a coupling, drive system having a coupling and a spring system, and switching installation having such a drive system
CN113811970A (en) * 2019-03-29 2021-12-17 西门子股份公司 Coupling, spring system, drive system with coupling and spring system, and switchgear with such a drive system

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AU2008202132A1 (en) 2008-12-04
FR2916300B1 (en) 2009-07-10
RU2453943C2 (en) 2012-06-20
FR2916300A1 (en) 2008-11-21
CN101308734B (en) 2012-04-18
RU2008119136A (en) 2009-11-20
BRPI0801341A2 (en) 2009-03-31
CN101308734A (en) 2008-11-19
ES2396742T3 (en) 2013-02-25
AU2008202132B2 (en) 2011-06-09
EP1993115B1 (en) 2012-12-12
BRPI0801341B1 (en) 2018-10-30

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