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EP2133897B1 - Device for controlling and pressurising a switch for an electric cut-off device with at least two positions - Google Patents

Device for controlling and pressurising a switch for an electric cut-off device with at least two positions Download PDF

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Publication number
EP2133897B1
EP2133897B1 EP09354018A EP09354018A EP2133897B1 EP 2133897 B1 EP2133897 B1 EP 2133897B1 EP 09354018 A EP09354018 A EP 09354018A EP 09354018 A EP09354018 A EP 09354018A EP 2133897 B1 EP2133897 B1 EP 2133897B1
Authority
EP
European Patent Office
Prior art keywords
contact
spring
piston
called
tunnel
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.)
Not-in-force
Application number
EP09354018A
Other languages
German (de)
French (fr)
Other versions
EP2133897A1 (en
Inventor
Denis Perrin
Francis Chevalier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2133897A1 publication Critical patent/EP2133897A1/en
Application granted granted Critical
Publication of EP2133897B1 publication Critical patent/EP2133897B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • the present invention relates to a contact control and pressurization device for an electrical device for breaking at at least two positions, comprising a movable contact, said movable contact being able to be moved between a first contact position with a first contact. fixed and a second contact position with a second fixed contact.
  • the contact pressure is achieved by means of two springs providing the contact pressure of the movable contact with respectively the first fixed contact and the second fixed contact.
  • these devices implement complicated devices for measuring the contact pressure in the two aforementioned positions.
  • the document JP 2003 257290 A discloses a device according to the preamble of claim 1.
  • the present invention solves these problems, by proposing a control device and contact pressurization of simple design, allowing with a minimum of parts to perform the function of contact pressurization.
  • the present invention also aims to provide a device allowing, with a minimum of room, to measure the contact pressure. It results from this reduced number of parts, a reduced manufacturing cost.
  • the present invention relates to a contact control and pressurizing device according to claim 1.
  • the cage and / or the piston is / are mu (s) by a push pin integral (s) of a lever rotatably mounted relative to the building.
  • the pusher shaft is slidably mounted in a groove of the cage and cooperates alternately with the cage or piston said second.
  • this device comprises means for measuring the compression stroke of the aforementioned spring in the so-called upper position, in which the movable contact is in contact with the second fixed contact, and in the so-called lower position, in which the movable contact is in contact with the first fixed contact.
  • these means for measuring the compression stroke of the spring in said upper spring position comprise means for measuring the distance separating the lower part of the cage from the lower part of the piston.
  • these means for measuring the compression stroke of the spring in said lower position of the spring comprise means for measuring the distance separating said second stop from the upper part of the cage.
  • this device can visualize the compression stroke of the spring by means of a particularly economical system because using a minimum of parts.
  • the spring plates the cage against the so-called second stop and the piston against the so-called first stop, the push shaft being held between the piston and the cage, the push shaft, the cage, the piston, the spring, the driving rod and the moving contact then behaving as a single element, so that when the lever is moved downwards or upwards, all this subassembly can be moved up to the moving contact comes into contact with the so-called first or respectively second fixed contact.
  • This bulb A comprises, housed in an envelope E of substantially cylindrical shape closed by two funds 1,2, a lower fixed contact 3, said first, substantially annular in shape extending radially inside the bulb, a contact upper fixed 4, said second, secured to one of the bottoms of the bulb and extending substantially parallel to the axis of the bulb, and a movable contact 5 slidably mounted through the other 2 of the two funds substantially parallel to the axis of the bulb.
  • One of the fixed contacts is intended to be electrically connected to the earth of an external circuit, the other of the fixed contacts being intended to be electrically connected to the source (or to the start) of said circuit and the movable contact 5 being intended to be electrically connected to the departure (or respectively the source) of said circuit.
  • the movable contact 5 is movable between a position of contact with one of the fixed contacts 3 and a position of contact with the other 4 of the fixed contacts.
  • the upper fixed contact 4 and the movable contact 5 each consist of a disc 6,7 mounted at the end of a rod 8, 9.
  • the disc 6 of the upper fixed contact 4 is mounted at the end of a fixed rod 8, while the disc 7 of the movable contact 5 is mounted at the end of a rod 9 integral with a driving rod 10 mobile contact.
  • the control device and contact pressurization comprises a cage 11 mounted in translation along the end 10a of the drive rod 10, said end being located on the opposite side to the disk 7 of the movable contact 5.
  • This rod 10 also comprises two disk-shaped stops 12, 13, one of which 12, said first, is located at the free end of the drive rod 10, and the other 13, said second, is located at the outside of the cage 11.
  • a compression spring 14 is mounted inside the cage 11 around said end 10a of the driving rod 10, said spring 14 being supported by one 14a of its ends , said first, on the cage 11, and its opposite end 14b, said second, on a piston 15.
  • This piston 15 is slidably mounted along said end 10a of the drive rod 10 and can move upwards of the bulb so that said piston, by one 15b of its face s, compresses the second end 14b of the spring 14, and towards the bottom of the bulb so that said piston 15, by one 15c of its faces, bears against the so-called first stop 12, provided at the end free 10a of the drive rod 10 so as to be able to drive.
  • the cage 11 is movable in translation along the rod towards the top of the bulb so as to abut by one of its faces 11c, on the abutment 13, said second of the stem, or towards the bottom so as to compress the first end 14a of the spring by an opposite face 11b.
  • This device also comprises a lever 16 pivotally connected to the frame 17, said lever 16 having a push pin 18, said push pin 18 being movable in translation in a groove 19 of the cage 11 between a position in which said pin 18 is in abutment against a wall 11a of the cage 11, so as to allow the drive of said cage 11, and a position in which this shaft 18 is in abutment against a wall 15a of the piston 15 so as to allow the driving of said piston 15, during a continued movement of said axis.
  • the device comprises a compression spring 14 and a cage 11, said cage 11 for compressing the upper portion 14a of the spring 14 and a piston 15 which serves to compress the lower portion 14b of the spring 14.
  • the displacement of the push pin 18 can compress either the upper portion 14a of the spring 14, via the cage 11, or the lower portion 14b of the spring 14, through the piston 15.
  • the compression spring 14 In the intermediate position as illustrated on the figure 2 , the compression spring 14, by its first end 14a, plates the cage 11 against the stop 13 said second, and by its second end 14b, plate the piston 15 against the abutment 12 said first.
  • the pusher axis 18 is then maintained between the piston 15, via a so-called third abutment 15a, and the cage 11, via a stop 11a, said fourth.
  • the assembly comprising the pusher axis, the cage, the piston, the compression spring, the driving rod, and the moving contact behave as a single body.
  • the abutment 11a of the cage 11 is formed by a slot 20 provided in the cage 11 and cooperating with the thrust pin 18.
  • the piston 15 consists of two parts, namely a pusher 21 driven without play by the push pin 18 and a support washer 22 integral with the pusher and located at the upper part of the pusher 21.
  • the drive rod 10 has a threaded portion at one end 10b of its ends and has at its non-threaded end a disk forming a first stop 12, integral with the rod and located inside the cage.
  • the threaded end 10b is intended to be screwed into a threaded orifice provided in a rod 9 supporting the movable contact.
  • the driving rod 10 further comprises a spacer 23 mounted around the rod 10 between, on the one hand, the cage 11 and the rod 10 and, on the other hand, the rod 10 and the lower bearing washer 22 of the piston 15, a so-called upper support washer 24 being mounted around a portion of the portion of the rod located outside the cage 11, said upper support washer 24 being retained between the aforementioned spacer 23 and a nut 25 screwed around the threaded end 10b of the rod 10.
  • the compression stroke of the spring can be visualized by measuring the distance e between the upper part 11c of the cage 11 of the lower surface 24a of the upper support washer 24.
  • the upper support washer 24 corresponds to the so-called second stop 13 of the drive rod 10 of the Figures 1 to 3 .
  • the thrust pin 18 cooperates with a groove 20 provided in the cage 11 and whose lower part corresponds to the above abutment 11a of the Figures 1 to 3 .
  • the pusher shaft 18 is integral with the piston 15.
  • This device also makes it possible to simply display the compression stroke of the spring in the two aforementioned positions.
  • This device uses a minimum of parts to perform these two functions, resulting in a particularly low manufacturing cost.
  • this system can be operated by any kind of actuator such as a connecting rod, a cam, an electromagnet, a jack ...
  • the spring function can be realized with different kinds of spring such as a helical spring round wire, square or rectangular, elastic washers, etc ...

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Measuring Leads Or Probes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The device has a cage (11) compressing an end (14a) of a compression spring (14), when a mobile contact (5) is in contact with a fixed contact (3). A piston (15) assures pressurization of contact of the mobile contact with the fixed contact, during the compression of the end of the spring. The piston compresses another end (14b) of the spring, when the mobile contact is in contact with a fixed contact (4). The cage assures pressurization of contact of the mobile contact with the fixed contact (4), during the compression of the end (14b) of the spring.

Description

La présente invention concerne un dispositif de commande et de mise en pression de contact pour un appareil électrique de coupure à au moins deux positions, comprenant un contact mobile, ledit contact mobile étant apte à être déplacé entre une première position de contact avec un premier contact fixe et une seconde position de contact avec un second contact fixe.The present invention relates to a contact control and pressurization device for an electrical device for breaking at at least two positions, comprising a movable contact, said movable contact being able to be moved between a first contact position with a first contact. fixed and a second contact position with a second fixed contact.

Dans les appareils électriques connus, la pression de contact est réalisée au moyen de deux ressorts assurant la pression de contact du contact mobile avec respectivement le premier contact fixe et le second contact fixe.In known electrical appliances, the contact pressure is achieved by means of two springs providing the contact pressure of the movable contact with respectively the first fixed contact and the second fixed contact.

En outre, ces appareils mettent en oeuvre des dispositifs compliqués pour mesurer la pression de contact dans les deux positions précitées.In addition, these devices implement complicated devices for measuring the contact pressure in the two aforementioned positions.

Le document JP 2003 257290 A divulgue un dispositif selon le préamble de la revendication 1.The document JP 2003 257290 A discloses a device according to the preamble of claim 1.

La présente invention résout ces problèmes, en proposant un dispositif de commande et de mise en pression de contact de conception simple, permettant avec un minimum de pièces de réaliser la fonction de mise en pression de contact. La présente invention a également pour but de proposer un dispositif permettant, avec un minimum de pièce, de mesurer la pression de contact. Il résulte de ce nombre de pièces réduit, un coût de fabrication réduit.The present invention solves these problems, by proposing a control device and contact pressurization of simple design, allowing with a minimum of parts to perform the function of contact pressurization. The present invention also aims to provide a device allowing, with a minimum of room, to measure the contact pressure. It results from this reduced number of parts, a reduced manufacturing cost.

A cet effet la présente invention a pour objet un dispositif de commande et de mise en pression de contact selon la revendication 1.For this purpose the present invention relates to a contact control and pressurizing device according to claim 1.

Grâce à ces caractéristiques, un seul ressort est utilisé pour assurer les efforts de pression de contact dans les deux positions.Thanks to these characteristics, a single spring is used to ensure the contact pressure forces in both positions.

Selon une caractéristique particulière, la cage et/ou le piston est/sont mu(s) par un axe poussoir solidaire(s) d'un levier monté rotatif par rapport au bâtit.According to a particular characteristic, the cage and / or the piston is / are mu (s) by a push pin integral (s) of a lever rotatably mounted relative to the building.

Selon une caractéristique particulière, l'axe poussoir est monté coulissant dans une rainure de la cage et coopère alternativement avec la cage ou le piston dit second.According to a particular characteristic, the pusher shaft is slidably mounted in a groove of the cage and cooperates alternately with the cage or piston said second.

Selon une caractéristique particulière de l'invention, ce dispositif comporte des moyens de mesure de la course de compression du ressort précité en position dite supérieure, dans laquelle le contact mobile est en contact avec le second contact fixe, et en position dite inférieure, dans laquelle le contact mobile est en contact avec le premier contact fixe.According to a particular characteristic of the invention, this device comprises means for measuring the compression stroke of the aforementioned spring in the so-called upper position, in which the movable contact is in contact with the second fixed contact, and in the so-called lower position, in which the movable contact is in contact with the first fixed contact.

Selon une caractéristique particulière, ces moyens de mesure de la course de compression du ressort en position dite supérieure du ressort, comprennent des moyens de mesure de la distance séparant la partie inférieure de la cage de la partie inférieure du piston.According to a particular characteristic, these means for measuring the compression stroke of the spring in said upper spring position comprise means for measuring the distance separating the lower part of the cage from the lower part of the piston.

Selon une autre caractéristique, ces moyens de mesure de la course de compression du ressort en position dite inférieure du ressort comportent des moyens de mesure de la distance séparant la butée dite seconde de la partie supérieure de la cage.According to another characteristic, these means for measuring the compression stroke of the spring in said lower position of the spring comprise means for measuring the distance separating said second stop from the upper part of the cage.

Ainsi, ce dispositif permet de visualiser la course de compression du ressort au moyen d'un système particulièrement économique car utilisant un minimum de pièces.Thus, this device can visualize the compression stroke of the spring by means of a particularly economical system because using a minimum of parts.

Selon une autre caractéristique particulière, en position intermédiaire, le ressort plaque la cage contre la butée dite seconde et le piston contre la butée dite première, l'axe poussoir étant maintenu entre le piston et la cage, l'axe poussoir, la cage, le piston, le ressort, la tige d'entraînement et le contact mobile se comportant alors comme un seul élément, de manière que lors d'un déplacement du levier vers le bas ou vers le haut, tout ce sous-ensemble puisse être déplacé jusqu'à ce que le contact mobile vienne en contact avec le contact fixe dit premier ou respectivement dit second.According to another particular characteristic, in the intermediate position, the spring plates the cage against the so-called second stop and the piston against the so-called first stop, the push shaft being held between the piston and the cage, the push shaft, the cage, the piston, the spring, the driving rod and the moving contact then behaving as a single element, so that when the lever is moved downwards or upwards, all this subassembly can be moved up to the moving contact comes into contact with the so-called first or respectively second fixed contact.

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 représentation schématique illustrant un appareil électrique de coupure à deux positions commandé par un dispositif de commande et de mise en pression de contact selon l'invention, dans l'une des deux positions stables de l'appareil,
  • La figure 2 est une représentation schématique identique à la figure précédente, le dispositif selon l'invention étant dans une position intermédiaire,
  • La figure 3 est une représentation schématique identique à la figure précédente, le dispositif selon l'invention étant dans l'autre des deux positions stables précitées,
  • La figure 4 est une vue partielle en coupe, illustrant une réalisation particulière du dispositif selon l'invention, dans la seconde des deux positions stables précitées, et
  • La figure 5 est une vue identique à la figure précédente, dans l'autre des deux positions stables précitées du dispositif selon l'invention,
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 schematic representation illustrating a two-position electrical switchgear controlled by a contact control and pressurization device according to the invention, in one of the two stable positions of the apparatus,
  • The figure 2 is a schematic representation identical to the previous figure, the device according to the invention being in an intermediate position,
  • The figure 3 is a schematic representation identical to the previous figure, the device according to the invention being in the other of the two aforementioned stable positions,
  • The figure 4 is a partial sectional view, illustrating a particular embodiment of the device according to the invention, in the second of the two aforementioned stable positions, and
  • The figure 5 is a view identical to the previous figure, in the other of the two aforementioned stable positions of the device according to the invention,

Sur les figures 1 à 3, a été représentée une ampoule de coupure électrique A commandée par un dispositif de commande et de mise en pression de contact selon l'invention. Cette ampoule A comporte, logés dans une enveloppe E de forme sensiblement cylindrique fermée par deux fonds 1,2, un contact fixe inférieur 3, dit premier, de forme sensiblement annulaire s'étendant radialement à l'intérieur de l'ampoule, un contact fixe supérieur 4, dit second, solidaire de l'un 1 des fonds de l'ampoule et s'étendant sensiblement parallèlement à l'axe de l'ampoule, et un contact mobile 5 monté coulissant à travers l'autre 2 des deux fonds sensiblement parallèlement à l'axe de l'ampoule. L'un des contacts fixes est destiné à être relié électriquement à la terre d'un circuit extérieur, l'autre des contacts fixes étant destiné à être relié électriquement à la source (ou au départ) dudit circuit et le contact mobile 5 étant destiné être relié électriquement au départ (ou respectivement à la source) dudit circuit. Le contact mobile 5 est déplaçable entre une position de contact avec l'un 3 des contacts fixe et une position de contact avec l'autre 4 des contacts fixes.On the Figures 1 to 3 has been shown an electric break bulb A controlled by a control device and contact pressurization according to the invention. This bulb A comprises, housed in an envelope E of substantially cylindrical shape closed by two funds 1,2, a lower fixed contact 3, said first, substantially annular in shape extending radially inside the bulb, a contact upper fixed 4, said second, secured to one of the bottoms of the bulb and extending substantially parallel to the axis of the bulb, and a movable contact 5 slidably mounted through the other 2 of the two funds substantially parallel to the axis of the bulb. One of the fixed contacts is intended to be electrically connected to the earth of an external circuit, the other of the fixed contacts being intended to be electrically connected to the source (or to the start) of said circuit and the movable contact 5 being intended to be electrically connected to the departure (or respectively the source) of said circuit. The movable contact 5 is movable between a position of contact with one of the fixed contacts 3 and a position of contact with the other 4 of the fixed contacts.

Le contact fixe supérieur 4 et le contact mobile 5 sont constitués chacun par un disque 6,7 monté à l'extrémité d'une tige 8,9. Le disque 6 du contact fixe supérieur 4 est monté à l'extrémité d'une tige fixe 8, tandis que le disque 7 du contact mobile 5 est monté à l'extrémité d'une tige 9 solidaire d'une tige d'entraînement 10 du contact mobile.The upper fixed contact 4 and the movable contact 5 each consist of a disc 6,7 mounted at the end of a rod 8, 9. The disc 6 of the upper fixed contact 4 is mounted at the end of a fixed rod 8, while the disc 7 of the movable contact 5 is mounted at the end of a rod 9 integral with a driving rod 10 mobile contact.

Le dispositif de commande et de mise en pression de contact comporte une cage 11 montée en translation le long de l'extrémité 10a de la tige d'entraînement 10, ladite extrémité étant située du côté opposé au disque 7 du contact mobile 5. Cette tige 10 comporte également deux butées en forme de disque 12,13, dont l'une 12, dite première, est située à l'extrémité libre de la tige d'entraînement 10, et dont l'autre 13, dite seconde, est située à l'extérieur de la cage 11. Un ressort de compression 14 est monté à l'intérieur de la cage 11 autour de ladite extrémité 10a de la tige d'entraînement 10, ledit ressort 14 étant en appui par l'une 14a de ses extrémités, dite première, sur la cage 11, et par son extrémité opposée 14b, dite seconde, sur un piston 15. Ce piston 15 est monté coulissant le long de ladite extrémité 10a de la tige d'entraînement 10 et peut se déplacer vers le haut de l'ampoule de manière que ledit piston, par l'une 15b de ses faces, comprime la seconde extrémité 14b du ressort 14, et vers le bas de l'ampoule de manière que ledit piston 15, par l'une 15c de ses faces, vienne en appui sur la butée dite première 12, prévue à l'extrémité libre 10a de la tige d'entraînement 10 de manière à pouvoir l'entraîner.The control device and contact pressurization comprises a cage 11 mounted in translation along the end 10a of the drive rod 10, said end being located on the opposite side to the disk 7 of the movable contact 5. This rod 10 also comprises two disk-shaped stops 12, 13, one of which 12, said first, is located at the free end of the drive rod 10, and the other 13, said second, is located at the outside of the cage 11. A compression spring 14 is mounted inside the cage 11 around said end 10a of the driving rod 10, said spring 14 being supported by one 14a of its ends , said first, on the cage 11, and its opposite end 14b, said second, on a piston 15. This piston 15 is slidably mounted along said end 10a of the drive rod 10 and can move upwards of the bulb so that said piston, by one 15b of its face s, compresses the second end 14b of the spring 14, and towards the bottom of the bulb so that said piston 15, by one 15c of its faces, bears against the so-called first stop 12, provided at the end free 10a of the drive rod 10 so as to be able to drive.

De même, la cage 11 est mobile en translation le long de la tige vers le haut de l'ampoule de manière à venir en appui par l'une 11c de ses faces, sur la butée 13 dite seconde de la tige, ou vers le bas de manière à comprimer la première extrémité 14a du ressort par une face opposée 11b.Similarly, the cage 11 is movable in translation along the rod towards the top of the bulb so as to abut by one of its faces 11c, on the abutment 13, said second of the stem, or towards the bottom so as to compress the first end 14a of the spring by an opposite face 11b.

Ce dispositif comporte également un levier 16 en liaison pivot par rapport au bâti 17, ledit levier 16 comportant un axe poussoir 18, ledit axe poussoir 18 étant mobile en translation dans une rainure 19 de la cage 11 entre une position dans laquelle ledit axe 18 est en butée contre une paroi 11a de la cage 11, de manière à permettre l'entraînement de ladite cage 11, et une position dans laquelle cet axe 18 est en appui contre une paroi 15a du piston 15 de manière à permettre l'entraînement dudit piston 15, lors d'un mouvement poursuivi dudit axe.This device also comprises a lever 16 pivotally connected to the frame 17, said lever 16 having a push pin 18, said push pin 18 being movable in translation in a groove 19 of the cage 11 between a position in which said pin 18 is in abutment against a wall 11a of the cage 11, so as to allow the drive of said cage 11, and a position in which this shaft 18 is in abutment against a wall 15a of the piston 15 so as to allow the driving of said piston 15, during a continued movement of said axis.

Ainsi, le dispositif comporte un ressort de compression 14 et une cage 11, ladite cage 11 servant à comprimer la partie haute 14a du ressort 14 ainsi qu'un piston 15 qui sert à comprimer la partie basse 14b du ressort 14. Le déplacement de l'axe poussoir 18 permet de comprimer soit la partie haute 14a du ressort 14, par l'intermédiaire de la cage 11, soit la partie basse 14b du ressort 14, par l'intermédiaire du piston 15.Thus, the device comprises a compression spring 14 and a cage 11, said cage 11 for compressing the upper portion 14a of the spring 14 and a piston 15 which serves to compress the lower portion 14b of the spring 14. The displacement of the push pin 18 can compress either the upper portion 14a of the spring 14, via the cage 11, or the lower portion 14b of the spring 14, through the piston 15.

Le fonctionnement du dispositif de commande selon l'invention va être décrit dans ce qui suit en référence aux figures.The operation of the control device according to the invention will be described in the following with reference to the figures.

Dans la position intermédiaire telle qu'illustrée sur la figure 2, le ressort de compression 14, par sa première extrémité 14a, plaque la cage 11 contre la butée 13 dite seconde, et par sa seconde extrémité 14b, plaque le piston 15 contre la butée 12 dite première. L'axe poussoir 18 est alors maintenu entre le piston 15, par l'intermédiaire d'une butée 15a dite troisième, et la cage 11, par l'intermédiaire d'une butée 11a, dite quatrième. Dans cette position, l'ensemble comportant l'axe poussoir, la cage, le piston, le ressort de compression, la tige d'entraînement, et le contact mobile se comportent comme un seul corps.In the intermediate position as illustrated on the figure 2 , the compression spring 14, by its first end 14a, plates the cage 11 against the stop 13 said second, and by its second end 14b, plate the piston 15 against the abutment 12 said first. The pusher axis 18 is then maintained between the piston 15, via a so-called third abutment 15a, and the cage 11, via a stop 11a, said fourth. In this position, the assembly comprising the pusher axis, the cage, the piston, the compression spring, the driving rod, and the moving contact behave as a single body.

Lorsque le levier 16 est déplacé vers le bas, tout ce sous-ensemble est déplacé grâce à l'axe poussoir 18, vers le bas. Ainsi, la cage 11 déplace le ressort 14, lequel ressort déplace le piston 15, lequel piston entraîne la tige d'entraînement 10 par l'intermédiaire de la butée dite première 12. Ce sous-ensemble est ainsi déplacé jusqu'à ce que le contact mobile 5 vienne en contact avec le contact fixe inférieur 3. A partir de ce moment, le contact mobile 5 et le piston 15 sont arrêtés dans leur mouvement. La poursuite du déplacement vers le bas du levier va continuer à entraîner la cage 11 et va donc comprimer la partie haute 14a du ressort 14. L'effort appliqué au ressort 14 est transmis au contact mobile 5 par l'intermédiaire de la tige d'entraînement 10 de manière à assurer la pression de contact tel qu'illustré sur la figure 1.When the lever 16 is moved downwards, all this subassembly is moved by the push pin 18, downwards. Thus, the cage 11 moves the spring 14, which spring moves the piston 15, which piston drives the drive rod 10 via the so-called first stop 12. This subassembly is thus moved until the movable contact 5 comes into contact with the lower fixed contact 3. From this moment, the movable contact 5 and the piston 15 are stopped in their movement. Continued downward movement the lever will continue to drive the cage 11 and will therefore compress the upper portion 14a of the spring 14. The force applied to the spring 14 is transmitted to the movable contact 5 via the drive rod 10 so as to ensure the contact pressure as illustrated on the figure 1 .

A partir de cette position inférieure illustrée sur la figure 1, lorsque le levier 16 est manoeuvré vers le haut tel qu'illustré sur la figure 3, l'axe poussoir 18 en remontant va permettre à la cage 11 de remonter sous l'effet de la détente du ressort de compression 14 jusqu'au contact de la cage 11 avec la butée 13 dite seconde. Ensuite, tout l'ensemble comportant l'axe poussoir, la cage, le piston, le ressort, la tige d'entraînement et le contact mobile, va être entraîné comme un seul élément jusqu'à ce que le contact mobile 5 vienne en butée avec le contact fixe supérieur 4. A partir de ce moment, le contact mobile 5 et la cage 11 s'arrêtent. La poursuite du mouvement vers le haut va continuer à entraîner le piston 15 et va donc comprimer la partie basse 14b du ressort 14. L'effort appliqué au ressort 14 est transmis au contact mobile 5 par la tige d'entraînement 10 de manière à assurer la pression de contact tel qu'illustré sur la figure 3.From this lower position illustrated on the figure 1 when the lever 16 is maneuvered upwards as shown in FIG. figure 3 the push pin 18 going up will allow the cage 11 to go up under the effect of the expansion of the compression spring 14 to the contact of the cage 11 with the abutment 13 said second. Then, all the assembly comprising the pusher axis, the cage, the piston, the spring, the drive rod and the movable contact, will be driven as a single element until the moving contact 5 comes to a stop with the upper fixed contact 4. From this moment, the movable contact 5 and the cage 11 stop. Continuing the upward movement will continue to drive the piston 15 and will therefore compress the lower portion 14b of the spring 14. The force applied to the spring 14 is transmitted to the movable contact 5 by the drive rod 10 so as to ensure the contact pressure as illustrated on the figure 3 .

Sur les figures 4 et 5, a été représentée une réalisation particulière d'un dispositif de commande et de mise en pression de contact selon l'invention. Selon cette réalisation, la butée 11a de la cage 11 est réalisée par une lumière 20 prévue dans la cage 11 et coopérant avec l'axe poussoir 18. Le piston 15 est constitué de deux parties, à savoir un poussoir 21 entraîné sans jeu par l'axe poussoir 18 et une rondelle d'appui 22 solidaire du poussoir et situé à la partie supérieure du poussoir 21.On the figures 4 and 5 has been shown a particular embodiment of a control device and contact pressurization according to the invention. According to this embodiment, the abutment 11a of the cage 11 is formed by a slot 20 provided in the cage 11 and cooperating with the thrust pin 18. The piston 15 consists of two parts, namely a pusher 21 driven without play by the push pin 18 and a support washer 22 integral with the pusher and located at the upper part of the pusher 21.

La tige d'entraînement 10 comporte une partie filetée à l'une 10b de ses extrémités et comporte à son extrémité non filetée un disque formant une première butée 12, venue de matière avec la tige et située à l'intérieur de la cage. L'extrémité filetée 10b est destinée à être vissée dans un orifice taraudé prévu dans une tige 9 supportant le contact mobile. La tige d'entraînement 10 comporte en outre une entretoise 23 montée autour de la tige 10 entre d'une part, la cage 11 et la tige 10 et d'autre part, la tige 10 et la rondelle d'appui inférieure 22 du piston 15, une rondelle d'appui dite supérieure 24 étant montée autour d'une partie de la partie de la tige située à l'extérieur de la cage 11, ladite rondelle d'appui supérieure 24 étant retenue entre l'entretoise précitée 23 et un écrou 25 vissé autour de l'extrémité filetée 10b de la tige 10.The drive rod 10 has a threaded portion at one end 10b of its ends and has at its non-threaded end a disk forming a first stop 12, integral with the rod and located inside the cage. The threaded end 10b is intended to be screwed into a threaded orifice provided in a rod 9 supporting the movable contact. The driving rod 10 further comprises a spacer 23 mounted around the rod 10 between, on the one hand, the cage 11 and the rod 10 and, on the other hand, the rod 10 and the lower bearing washer 22 of the piston 15, a so-called upper support washer 24 being mounted around a portion of the portion of the rod located outside the cage 11, said upper support washer 24 being retained between the aforementioned spacer 23 and a nut 25 screwed around the threaded end 10b of the rod 10.

En position dite supérieure telle qu'illustrée sur la figure 4, et correspondant à une position dans laquelle le contact mobile 5 est en contact avec le contact fixe supérieur 4, la course de compression du ressort peut être visualisée en mesurant la distance d séparant la face inférieure 11b de la cage 11 de la face inférieure 15b du poussoir 15.In so-called upper position as illustrated on the figure 4 , and corresponding to a position in which the movable contact 5 is in contact with the upper fixed contact 4, the compression stroke of the spring can be visualized by measuring the distance d between the lower face 11b of the cage 11 of the lower face 15b pusher 15.

De même, en position dite inférieure, telle qu'illustrée sur la figure 5, et correspondant à une position dans laquelle le contact mobile est en contact avec le contact fixe inférieur, la course de compression du ressort peut être visualisée en mesurant la distance e séparant la partie supérieure 11c de la cage 11 de la surface inférieure 24a de la rondelle d'appui supérieure 24.Similarly, in the so-called lower position, as illustrated on the figure 5 , and corresponding to a position in which the moving contact is in contact with the lower stationary contact, the compression stroke of the spring can be visualized by measuring the distance e between the upper part 11c of the cage 11 of the lower surface 24a of the upper support washer 24.

Le fonctionnement du dispositif tel qu'illustré sur les figures 4 et 5 ne sera pas décrit, car il correspond à celui déjà décrit en relation avec le dispositif des figures 1 à 3. Sur ces figures 4 et 5, la rondelle d'appui supérieure 24 correspond à la butée dite seconde 13 de la tige d'entraînement 10 des figures 1 à 3. L'axe poussoir 18 coopère avec une rainure 20 prévue dans la cage 11 et dont la partie basse correspond à la butée 11a précitée des figures 1 à 3. L'axe poussoir 18 est solidaire du piston 15.The operation of the device as illustrated on the figures 4 and 5 will not be described because it corresponds to that already described in relation to the Figures 1 to 3 . On these figures 4 and 5 the upper support washer 24 corresponds to the so-called second stop 13 of the drive rod 10 of the Figures 1 to 3 . The thrust pin 18 cooperates with a groove 20 provided in the cage 11 and whose lower part corresponds to the above abutment 11a of the Figures 1 to 3 . The pusher shaft 18 is integral with the piston 15.

On a donc réalisé suivant l'invention, un dispositif de commande et de mise en pression de contact permettant l'utilisation d'un seul ressort pour assurer les efforts de pression de contact dans les deux positions stables du dispositif, en utilisant alternativement les deux extrémités du ressort.It has therefore been realized according to the invention, a control device and contact pressurization allowing the use of a single spring to ensure the contact pressure forces in the two stable positions of the device, using alternately the two ends of the spring.

Ce dispositif permet également de visualiser simplement la course de compression du ressort dans les deux positions précitées.This device also makes it possible to simply display the compression stroke of the spring in the two aforementioned positions.

Ce dispositif utilise un minimum de pièces pour réaliser ces deux fonctions, d'où un coût de fabrication particulièrement réduit.This device uses a minimum of parts to perform these two functions, resulting in a particularly low manufacturing cost.

On notera que ce système peut être manoeuvré par toute sorte d'actionneur tels qu'une bielle, une came, un électro-aimant, un vérin...Note that this system can be operated by any kind of actuator such as a connecting rod, a cam, an electromagnet, a jack ...

La fonction ressort pourra être réalisée avec différentes sortes de ressort tel une ressort hélicoïdal à fil rond, carré ou rectangulaire, des rondelles élastiques, etc...The spring function can be realized with different kinds of spring such as a helical spring round wire, square or rectangular, elastic washers, etc ...

Bien entendu, l'invention n'est pas limitée aux modes de réalisation 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.

Claims (7)

  1. A device for control and contact pressure application for an electrical switchgear unit with at least two positions comprising a movable contact, said movable contact being able to be moved by means of a driving rod between a first position in contact with a first stationary contact and a second position in contact with a second stationary contact, and a compression spring (14), means called first means (11) for compressing a first end (14a) of said spring (14) when the movable contact (5) is in contact with the first stationary contact (3), means called second means (15) designed to ensure contact pressure application of the movable contact (5) with the first stationary contact (3) when the first end (14a) of the spring (14) is compressed, characterized in that it comprises means called third means (15) designed to compress a second end (14b) of the spring (14) when the movable contact (5) is in contact with the second stationary contact (4), and means called fourth means (11) designed to perform contact pressure application of the movable contact (5) with the second stationary contact (4) when the second end (14b) of the spring (14) is compressed, in that the first means comprise a tunnel (11) mounted around the above-mentioned spring (14) and movable in translation in a direction substantially parallel to the axis of the drive rod (9), said tunnel (11) being able to be actuated by an actuating means so as to compress the first end (14a) of the spring (14), in that the above-mentioned second means comprise a piston called first piston (15), mounted in translation in a direction substantially parallel to the axis of the rod (9), said piston (15) operating in conjunction with the drive rod (9) so as to drive the rod in the direction of application of a contact pressure of the movable contact (5) with the first stationary contact (3) when the first end (14a) of the spring (14) is compressed by the above-mentioned first means (11), in that the third means comprise a piston (15), called second piston, said piston being mounted in translation in a direction substantially parallel to the axis of the rod (9) and being designed to compress the second end (14b) of the spring (14) when actuated, in that the fourth means comprise a tunnel (11) called second tunnel, operating in conjunction with the drive rod (9) to drive said rod (9) in a contact position of the movable contact (5) with the second stationary contact (4) when the second end (14b) of the spring (14) is compressed by the third means, in that the piston called first piston and the piston called second piston comprise one and the same single piston (15), said single piston comprising a surface (15b) designed to perform compression of the second end (14b) of the spring when a first movement of the piston takes place, and a surface (15c) operating in conjunction with a stop (12) called first stop of the actuating rod (9) so as to enable driving of the actuating rod and to thereby provide the contact pressure between the movable contact (5) and the first stationary contact (3) when a second movement of the rod (9) takes place in an opposite direction to the previous direction, and in that the means called first means and the means called fourth means comprise one and the same single tunnel (11), said single tunnel comprising a surface (11 b) designed to compress the first end (14a) of the spring when a first movement of the tunnel (11) takes place, and a second surface (11c) designed to act on a stop called second stop (13) of the rod so as to drive the actuating rod when a second movement of the tunnel (11) takes place in an opposite direction to the previous direction to a contact position of the movable contact with the second stationary contact.
  2. The device for control and contact pressure application according to claim 1, characterized in that the tunnel (11) and/or piston (15) is/are driven by a push-pin (18) securedly attached to a lever (16) mounted rotating with respect to the frame.
  3. The device for control and contact pressure application according to claim 1, characterized in that the push-pin (18) is mounted sliding in a groove (19) of the tunnel (11) and operates alternately in conjunction with the tunnel (11) or the piston called second piston (15).
  4. The device for control and contact pressure application according to any one of the foregoing claims, characterized in that it comprises means for measuring the compression travel of the above-mentioned spring in the position called top position in which the movable contact (5) is in contact with the second stationary contact (4), and in the position called bottom position in which the movable contact (5) is in contact with the first stationary contact (3).
  5. The device for control and contact pressure application according to claim 4, characterized in that the means for measuring the compression travel of the spring in the position called top position of the spring (14) comprise means for measuring the distance (d) separating the bottom part of the tunnel (11) from the bottom part of the piston (15).
  6. The device for control and contact pressure application according to claim 4 or 5, characterized in that the means for measuring the compression travel of the spring (14) in the position called bottom position of the spring comprise means for measuring the distance (e) separating the stop called second stop (24) from the top part of the tunnel (11).
  7. The device for control and contact pressure application according to any one of the foregoing claims, characterized in that, in the intermediate position, the spring (14) presses the tunnel (11) against the stop called second stop (13) and presses the piston (15) against the stop called first stop (12), the push-pin (18) being held between the piston (15) and the tunnel (11), the push-pin (18), tunnel (11), piston (15), spring (14), drive rod (9) and movable contact (5) then behaving as a single element so that, when downward or upward movement of the lever (16) takes place, the whole of this sub-assembly can be moved until the movable contact (5) comes into contact with the stationary contact called first stationary contact (3) or respectively second stationary contact (4).
EP09354018A 2008-06-13 2009-04-27 Device for controlling and pressurising a switch for an electric cut-off device with at least two positions Not-in-force EP2133897B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0803312A FR2932606A1 (en) 2008-06-13 2008-06-13 DEVICE FOR CONTROLLING AND PRESSURIZING CONTACT FOR AN ELECTRICAL DEVICE FOR CUTTING AT AT LEAST TWO POSITIONS.

Publications (2)

Publication Number Publication Date
EP2133897A1 EP2133897A1 (en) 2009-12-16
EP2133897B1 true EP2133897B1 (en) 2011-11-16

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EP09354018A Not-in-force EP2133897B1 (en) 2008-06-13 2009-04-27 Device for controlling and pressurising a switch for an electric cut-off device with at least two positions

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EP (1) EP2133897B1 (en)
CN (1) CN101604582B (en)
AT (1) ATE534131T1 (en)
ES (1) ES2374144T3 (en)
FR (1) FR2932606A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103000398B (en) * 2011-09-15 2015-12-02 西门子公司 A kind of operating mechanism and switching device shifter
CN103163311B (en) * 2011-12-08 2014-12-10 贵州航天电器股份有限公司 Detection clamp and detection method special for action acceleration of overload switch
CN103824724B (en) * 2014-03-08 2016-06-15 浙江华仪电器科技有限公司 A kind of two-way insulated tension pole
CN111681906B (en) * 2020-03-13 2022-06-17 安德利集团有限公司 Vacuum circuit breaker

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Publication number Priority date Publication date Assignee Title
JPS55131919A (en) * 1979-03-30 1980-10-14 Mitsubishi Electric Corp Device for switching vacuum switch
NL8803018A (en) * 1988-12-08 1990-07-02 Holec Syst & Componenten Electric switch operated by rotating shaft via lever system
DE3906786A1 (en) * 1989-03-03 1990-09-13 Sachsenwerk Ag Drive mechanism
FR2683940B1 (en) * 1991-11-20 1993-12-31 Gec Alsthom Sa MEDIUM VOLTAGE CIRCUIT BREAKER FOR INDOOR OR OUTDOOR USE.
JP2001210200A (en) * 2000-01-27 2001-08-03 Tokyo Electric Power Co Inc:The Switchgear
JP2001222935A (en) * 2000-02-08 2001-08-17 Toshiba Corp Vacuum breaker
JP2003257290A (en) * 2002-02-28 2003-09-12 Tokyo Electric Power Co Inc:The Switch gear
CN2772009Y (en) * 2005-01-22 2006-04-12 无锡市蓝虹电子有限公司 High-voltage tripolar vacuum contactor
CN100440412C (en) * 2006-09-13 2008-12-03 施文峰 Low-voltage vacuum switch

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CN101604582A (en) 2009-12-16
EP2133897A1 (en) 2009-12-16
ATE534131T1 (en) 2011-12-15
FR2932606A1 (en) 2009-12-18
ES2374144T3 (en) 2012-02-14
CN101604582B (en) 2014-02-26

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