EP2068332A1 - A latching device for a control mechanism for electrical apparatus, and a control mechanism equipped with such a device. - Google Patents
A latching device for a control mechanism for electrical apparatus, and a control mechanism equipped with such a device. Download PDFInfo
- Publication number
- EP2068332A1 EP2068332A1 EP08170271A EP08170271A EP2068332A1 EP 2068332 A1 EP2068332 A1 EP 2068332A1 EP 08170271 A EP08170271 A EP 08170271A EP 08170271 A EP08170271 A EP 08170271A EP 2068332 A1 EP2068332 A1 EP 2068332A1
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- EP
- European Patent Office
- Prior art keywords
- slide
- finger
- rotation
- abutment portion
- fastening device
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- 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.)
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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
- H01H3/3031—Means for locking the spring in a charged state
Definitions
- the present invention relates to the general field of electrical equipment and in particular to the field of medium voltage switch control mechanisms.
- the invention relates to an attachment device for a medium voltage switch control mechanism and a control mechanism comprising such a coupling device.
- the current distribution cells for example the medium voltage cells, comprise in particular a switch which establishes or cuts the passage of the current in the cell.
- a medium voltage switch is usually controlled by a spring-loaded control mechanism that is operated for example by means of a removable lever. These mechanisms can be with or without clashes depending on their function. It is known that the control mechanisms are subjected to significant efforts. However, to comply with regulatory standards that impose a limit on the triggering force, the clutch control mechanisms often include links complexes or lever arms of great length in order to minimize the triggering force.
- the document FR2160980 discloses a control mechanism for electric circuit breaker, including a driving wheel whose rotation causes the energization of a snap-in spring, and the release of the accumulated elastic energy triggers.
- the control mechanism comprises a set of tensioning of the engagement spring A18, comprising the mechanical parts A1 to A7, acting on a drive wheel A8 in cooperation with an anti-rotation assembly. back (parts A11 and A12).
- This same wheel A8 drives, via a finger A9, a cam A10 mounted on the axis A14 of said wheel A8 whose end is capable of abutting against a snap A13.
- an engagement assembly parts A15 to A18
- a trigger assembly parts A19 to A22.
- the attachment device of the control mechanism comprises in particular the cam A10, the drive wheel A8 comprising a finger A9 acting on the cam A10, the snap-fastening A13 and the non-return assembly A11 and A12 preventing the wheel A8 of turn in the opposite direction.
- Such a coupling device for a control mechanism has a number of disadvantages.
- the mechanical structure of the attachment device is characterized by a large number of mechanical parts of different dimensions and likely to deform. This is the case for example when the attachment device is in closed configuration (cam A10 abuts against the snap A13) where the cam A10 exerts a continuous force on the snap A13.
- An imperfect contact surface condition between the cam and the latching and a deformation of one of the two parts can cause an unplanned triggering of the control mechanism. The reliability of the control mechanism is no longer guaranteed.
- the energization of the interlocking spring which results in the setting in closed configuration of the attachment device requires the use of a set of complex power, including the large number of mechanical parts , in particular of small size (roller A7, counter roller A3, lever A6, balance A2) likely to deform, reduces the reliability of the control mechanism.
- a contact fault between the cam A10 and the roller A7 may cause the ratchet lever A5 to engage continuously in the toothing of the drive wheel A8 and then block the triggering of the control mechanism.
- the control mechanism comprises a complex linkage consisting in particular of a lever arm A19, a connecting rod A16 and a cam A10 large.
- control mechanism previously described has an attachment device and actuation assemblies of said device with complex structures consisting of a multitude of parts of different dimensions likely to deform.
- the slightest play or the slightest deformation of these mechanical parts can cause a blocking of the control mechanism, making it impossible to engage or trigger the mechanism, or even a nuisance tripping.
- the object of the present invention is to overcome the aforementioned drawbacks and in particular to provide a coupling device for medium voltage switch control mechanism designed to ensure high reliability while having a reduced trip force.
- the abutment portion of the locking finger comprises a roller rotating about a third axis substantially parallel to the second axis and having a surface adapted to come into contact with the stop portion of the slide.
- the slide is guided in its movement by at least two rotating rollers on axes.
- said one or more rollers are mounted on rings made of self-lubricated polymer.
- said one or more rollers are mounted on rings made of polytetrafluoroethylene.
- said roller or rollers and the surface of the slideway are made of steel.
- said slideway comprises a portion adapted to come into contact with the abutment portion of said locking finger, said slide portion being substantially adjacent to the abutment portion of the slide and oriented in such a way that that during the release of the finger, its contact with the abutment portion causes the movement of the slide.
- a release lever is connected to said slideway so as to control the movement of said slideway.
- the present invention also relates to a control mechanism including a medium voltage switch, comprising a hooking device according to one of the preceding characteristics.
- the attachment device comprises a control wheel 10 rotatably mounted on a first axis or shaft 11 and adapted to be locked in rotation.
- the control wheel 10 is constrained in rotation in a determined direction of rotation.
- the control wheel 10 is constrained in rotation in the direction anti-clockwise when viewed from the front.
- the control wheel 10 may be constrained by a spiral spring (not shown), but also by other types of spring, for example a helical spring whose end is connected to the control wheel 10.
- the control wheel 10 has at its outer periphery a cam surface 12.
- the cam surface 12 of the control wheel 10 comprises at least one locking portion 13 in the form of an arcuate recess.
- the attachment device comprises a locking pin 20 rotatably mounted on a second axis 21 parallel to the first axis 11.
- the locking pin 20 comprises a cam follower portion 22 intended to be in contact with the cam surface. 12 of the control wheel 10.
- a means exerting a restoring force (not shown), for example a torsion spring, is connected to the locking finger 20 so as to maintain contact between the follower portion of the cam 22 of the locking finger. blocking 20 and the cam surface 12 of the control wheel 10.
- the second axis 21 is located substantially near one end of the finger 20 and the cam follower portion 22 is located substantially near the other end.
- the force exerted by the spiral spring on the control wheel 10 to constrain it in rotation is transmitted to the locking pin 20 by causing the rotation of the finger 20.
- the rotation of the finger 20 causes the release of the portion cam follower 22 of the locking portion 13 and allows the further rotation of the wheel 10.
- the clearance of the cam follower portion 22 of the locking portion 13 is impossible and the rotation of the wheel is blocked.
- the cam follower portion 22 can escape from the locking portion 13 by the anti-clockwise rotation of the finger 20.
- the attachment device comprises a slideway 30 comprising an abutment portion 31.
- the slideway can slide in translation so as to contact or release the abutment portion 31 of the slideway 30 with an abutment portion 23 of the locking finger 20.
- the slide 30 is disposed relative to the locking finger 20 so as to block the rotation of the finger 20 when the abutment portion 23 of the locking finger 20 is in contact with the portion forming stop 31 of the slide 30.
- the slide 30 functions as a removable stop.
- the attachment device is able to occupy a locked configuration in which the control wheel 10 is immobilized in rotation, as illustrated in FIG. figure 2 .
- the immobilization in rotation of the wheel 10 is provided jointly, firstly by the support of the cam follower portion 22 on the locking portion 13 of the cam surface 12, and secondly by the immobilization in rotation of the finger 20 through the retention of its abutment portion 23 by the abutment portion 31 of the slide 30.
- the triggering of the attachment device is ensured by the setting in motion of the slide 30 causing the escape of the stop between the abutment portion 23 of the finger 20 and the abutment portion 31 of the slide 30.
- the rotation of the finger 20 around the second axis 21 is made free, thereby allowing the disengaging the follower cam portion 22 from the locking portion 13 of the cam surface 12.
- the attachment device according to the invention has a certain number of advantages.
- the triggering force of the attachment device is reduced because it corresponds only to the force required to slide the slideway 30 and to obtain the exhaust of the stop between the stop portion 31 of the slideway 30. and the abutment portion 23 of the finger 20.
- the forces exerted on the slide 30 indirectly by the control wheel 10 are reduced since resumed in part by the axis 21 of the finger 20. This helps to reduce the triggering force to be applied to slide 30.
- the attachment device according to the invention therefore has increased reliability.
- the attachment device according to the invention by the fact of not having to use connecting rods or parts of great length, has the advantage of a small footprint.
- the abutment portion 23 of the locking pin 20 comprises a rotating roller 23 around a third axis 24 substantially parallel to the second axis 21 and having a surface adapted to come into contact with the forming a stop portion 31 of the slideway 30.
- the slideway 30 is guided in its movement by at least two rollers 32A and 32B each rotatable about the axes 33A and 33B substantially parallel to the third axis 24 and substantially perpendicular to the direction of movement of the slideway 30, in permanent contact with the surface of the slide 30.
- the slide 30 moves relative to the two rollers 32A and 32B rotating them. This reduces the triggering force since the displacement of the slide 30 is not by sliding on a support but by rolling on the two rollers 32A and 32B.
- the dry kinematic coefficient of friction is of the order of 10 -1 .
- the coefficient of rolling is of the order of 10 -3 , that is two orders of magnitude lower than the coefficient of kinematic friction. The triggering force is thus reduced.
- the rollers 23, 32A and 32B can be mounted respectively on rings 25, 35A and 35B.
- the materials of the rollers 23, 32A and 32B, the rings 25, 35A and 35B, and the surface 34 of the slideway 30 are chosen so as to have a low rolling coefficient, so as to reduce the release force as explained previously.
- the rollers 23, 32A and 32B and the surface 34 of the slide 30 are made of steel, and the rings 25, 35A and 35B are made of self-lubricated polymer.
- self-lubricated applies here to a material whose coefficient of friction is sufficiently low not to have to use lubricant at the contact surface between the rings 25, 35A and 35B and, respectively, the rollers 23. , 32A and 32B.
- the self-lubricated polymer may be a fluoropolymer, for example polytetrafluoroethylene or POM loaded with PTFE and / or silicone.
- the slide 30 comprises a portion 36 adapted to come into contact with the abutment portion 23 of said locking finger 20.
- the portion 36 is substantially adjacent to the abutment portion 31 of the slide 30 and oriented so as to undergo a force exerted by the abutment portion 23 of said finger 20 during the rotation of said finger 20 under the effect of the rotation of said wheel 10.
- the figure 2 shows a portion 36 in the form of a flat surface having an angle substantially greater than 90 ° relative to the abutment portion 31 of the slide 30.
- a release lever 40 may be provided to control the movement of the slide 30.
- the trigger lever 40 is rotatably mounted on an axis 41 substantially parallel to the axis 21 of the finger 20.
- the lever 40 comprises a slot 42 in the form of recess for the translation of the lever 40 relative to the axis 41.
- the lever 40 is connected with pivotally to the slide 30 so that the rotation of the lever 40 drives the slide 30 in translation.
- a release frame 50 is provided on which are mounted integral the rings 35A and 35B, as well as the axis 41 of the trip lever 40.
- the shafts 11, 21 and 41 are mounted substantially perpendicular to a plate (not shown).
- control wheel 10 is rotated in a clockwise direction.
- the force exerted by the wheel 10 on the finger 20 tends to rotate it in a counter-clockwise rotation so that the cam follower portion 22 of the finger 20 escapes from the locking portion 13 of the cam surface 12.
- the rest of the triggering movement is identical to what has been described previously.
- the figure 6 shows yet another embodiment of the invention wherein the axis 21 of the finger 20 is located substantially in the center of the finger 20.
- the cam follower portion 22 and the abutment portion 23 are no longer located substantially at the same end of the finger 20, as in the preferred embodiment of the invention, but are located opposite to each other.
- the cam follower portion 22 is located substantially at one end of the locking finger 20 while the abutment portion 23 is located substantially at the other end.
- the triggering movement is identical to that described in the preferred embodiment of the invention.
- the triggering of the attachment device can be effected by actuation of the release lever 40, either manually or automatically.
- actuation of the release lever 40 There are many possibilities to actuate the trigger lever 40, for example by push button in the case of a manual action.
- the trip lever 40 may also be actuated by the melting of a fuse, or by the action of an electromagnet, or by a coil lack of voltage or striker.
- the triggering of the attachment device results in the rotation of the wheel 10 whose rotation energy allows the actuation of mechanical means connected to the wheel 10 (not shown) intended to establish or cut the passage of the current in the distribution cell.
- the engagement can be carried out manually or by means of a motorization.
- the trip lever 40 is then actuated by a return spring fixed between the release lever 40 and the frame 50 so as to slide the slideway 30 in the reverse direction to the triggering direction.
- the abutment portion 23 of the locking finger 20 moves along the portion 36 of the slide and then comes into contact with the abutment portion 31 of the slide.
- the cam follower portion 22 of the finger 20 moves along the cam surface 12 until it comes into contact with the locking portion 13 of the cam surface 12.
- the attachment device is then found in the locked configuration.
- the control wheel 10 is immobilized in rotation on the one hand by the support of the cam follower portion 22 on the locking portion 13 of the cam surface 12 and on the other hand by the immobilization in rotation of the finger 20 thanks to the retention of its abutment portion 23 by the abutment portion 31 of the slide 30.
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- Mechanisms For Operating Contacts (AREA)
- Transmission Devices (AREA)
- Lock And Its Accessories (AREA)
- Braking Arrangements (AREA)
- Selective Calling Equipment (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Mechanical Control Devices (AREA)
Abstract
Description
La présente invention se rapporte au domaine général des appareillages électriques et notamment au domaine des mécanismes de commande d'interrupteur moyenne tension. L'invention concerne un dispositif d'accrochage pour mécanisme de commande d'interrupteur moyenne tension ainsi qu'un mécanisme de commande comportant un tel dispositif d'accrochage.The present invention relates to the general field of electrical equipment and in particular to the field of medium voltage switch control mechanisms. The invention relates to an attachment device for a medium voltage switch control mechanism and a control mechanism comprising such a coupling device.
Les cellules de distribution de courant, par exemple les cellules moyenne tension, comprennent notamment un interrupteur qui établit ou coupe le passage du courant dans la cellule.The current distribution cells, for example the medium voltage cells, comprise in particular a switch which establishes or cuts the passage of the current in the cell.
Un interrupteur moyenne tension est habituellement commandé par un mécanisme de commande à ressort que l'on manoeuvre par exemple à l'aide d'un levier amovible. Ces mécanismes peuvent être avec ou sans accrochages selon leur fonction. Il est connu que les mécanismes de commande sont soumis à des efforts importants. Or, pour respecter les normes réglementaires qui imposent une limite concernant l'effort de déclenchement, les mécanismes de commande à accrochages comprennent souvent des embiellages complexes ou des bras de levier de grande longueur dans le but de minimiser l'effort de déclenchement.A medium voltage switch is usually controlled by a spring-loaded control mechanism that is operated for example by means of a removable lever. These mechanisms can be with or without clashes depending on their function. It is known that the control mechanisms are subjected to significant efforts. However, to comply with regulatory standards that impose a limit on the triggering force, the clutch control mechanisms often include links complexes or lever arms of great length in order to minimize the triggering force.
Ainsi, le document
Comme le montre la
Un tel dispositif d'accrochage pour mécanisme de commande présente un certain nombre d'inconvénients. D'une part, la structure mécanique du dispositif d'accrochage est caractérisée par un grand nombre de pièces mécaniques de différentes dimensions et susceptibles de se déformer. C'est le cas par exemple lorsque le dispositif d'accrochage est en configuration fermée (came A10 en butée contre l'encliquetage A13) où la came A10 exerce un effort continu sur l'encliquetage A13. Un état de surface de contact imparfait entre la came et l'encliquetage ainsi qu'une déformation de l'une des deux pièces peut provoquer un déclenchement non prévu du mécanisme de commande. La fiabilité du mécanisme de commande n'est alors plus garantie.Such a coupling device for a control mechanism has a number of disadvantages. On the one hand, the mechanical structure of the attachment device is characterized by a large number of mechanical parts of different dimensions and likely to deform. This is the case for example when the attachment device is in closed configuration (cam A10 abuts against the snap A13) where the cam A10 exerts a continuous force on the snap A13. An imperfect contact surface condition between the cam and the latching and a deformation of one of the two parts can cause an unplanned triggering of the control mechanism. The reliability of the control mechanism is no longer guaranteed.
D'autre part, la mise sous tension du ressort d'enclenchement, qui se traduit par la mise en configuration fermée du dispositif d'accrochage nécessite l'utilisation d'un ensemble de mise sous tension complexe, dont le grand nombre de pièces mécaniques, notamment de petite dimension (galet A7, contre-galet A3, levier A6, balancier A2) susceptibles de se déformer, vient diminuer la fiabilité du mécanisme de commande. Par exemple, un défaut de contact entre la came A10 et le galet A7 peut provoquer l'engagement continu du levier à cliquet A5 dans la denture de la roue d'entraînement A8 et bloque alors le déclenchement du mécanisme de commande. De plus, dans le but de minimiser l'effort de déclenchement, le mécanisme de commande comprend un embiellage complexe constitué notamment d'un bras de levier A19, d'une bielle A16 et d'une came A10 de grande dimension.On the other hand, the energization of the interlocking spring, which results in the setting in closed configuration of the attachment device requires the use of a set of complex power, including the large number of mechanical parts , in particular of small size (roller A7, counter roller A3, lever A6, balance A2) likely to deform, reduces the reliability of the control mechanism. For example, a contact fault between the cam A10 and the roller A7 may cause the ratchet lever A5 to engage continuously in the toothing of the drive wheel A8 and then block the triggering of the control mechanism. In addition, in order to minimize the triggering force, the control mechanism comprises a complex linkage consisting in particular of a lever arm A19, a connecting rod A16 and a cam A10 large.
Ainsi, on comprend que le mécanisme de commande précédemment décrit présente un dispositif d'accrochage et des ensembles d'actionnement dudit dispositif de structures complexes constituées d'une multitude de pièces de différentes dimensions susceptibles de se déformer. Le moindre jeu ou la moindre déformation de ces pièces mécaniques peuvent entraîner un blocage du mécanisme de commande, rendant impossible l'enclenchement ou le déclenchement du mécanisme, voire même un déclenchement intempestif. A ce manque de fiabilité des mécanismes de commande de l'art antérieur s'ajoutent les coûts élevés d'entretien pour pallier au manque de fiabilité ainsi que les problèmes d'encombrements inhérents à l'utilisation de pièces mécaniques de grande taille.Thus, it will be understood that the control mechanism previously described has an attachment device and actuation assemblies of said device with complex structures consisting of a multitude of parts of different dimensions likely to deform. The slightest play or the slightest deformation of these mechanical parts can cause a blocking of the control mechanism, making it impossible to engage or trigger the mechanism, or even a nuisance tripping. To this lack of reliability of the control mechanisms of the prior art are added the high maintenance costs to overcome the lack of reliability and the congestion problems inherent in the use of large mechanical parts.
Le but de la présente invention est de remédier aux inconvénients précités et notamment de proposer un dispositif d'accrochage pour mécanisme de commande d'interrupteur moyenne tension conçu de manière à garantir une fiabilité importante tout en présentant un effort de déclenchement réduit.The object of the present invention is to overcome the aforementioned drawbacks and in particular to provide a coupling device for medium voltage switch control mechanism designed to ensure high reliability while having a reduced trip force.
La présente invention est définie par un dispositif d'accrochage pour mécanisme de commande notamment d'interrupteur moyenne tension. Selon l'invention, ledit dispositif d'accrochage comprend :
- une roue de commande montée tournante sur un premier axe, de façon contrainte suivant un sens de rotation déterminé et présentant une surface formant surface de came,
- un doigt de blocage monté tournant selon un deuxième axe, et présentant une partie formant butée ainsi qu'une portion suiveuse de came destinée à contacter ladite surface de came, et
- une glissière comprenant une portion de butée,
ledit dispositif étant apte à occuper une configuration verrouillée dans laquelle ladite roue de commande est immobilisée en rotation - d'une part par l'appui de ladite portion suiveuse de came sur une portion de blocage de ladite surface de came ; et
- d'autre part par l'immobilisation en rotation dudit doigt grâce à la retenue de sa partie formant butée par ladite portion de butée de la glissière,
ledit dispositif étant conçu pour être libéré de sa configuration verrouillée par une mise en mouvement de la glissière provoquant un échappement de la butée entre ladite partie formant butée et ladite portion de butée de la glissière, et rendant libre en rotation ledit doigt selon le deuxième axe, ledit échappement de la butée conduisant à une mise en rotation de la roue sous l'effet de sa contrainte, poussant la portion suiveuse de came à se dégager de ladite portion de blocage de la surface de came en se déplaçant relativement à celle-ci, grâce à la rotation dudit doigt selon le deuxième axe.
- a control wheel rotatably mounted on a first axis, constrained according to a determined direction of rotation and having a surface forming a cam surface;
- a locking finger rotatably mounted along a second axis, and having a stop portion and a follower cam portion for contacting said cam surface, and
- a slideway comprising a stop portion,
said device being adapted to occupy a locked configuration in which said control wheel is immobilized in rotation - on the one hand by the support of said cam follower portion on a locking portion of said cam surface; and
- secondly by the immobilization in rotation of said finger through the retention of its abutment portion by said stop portion of the slide,
said device being adapted to be released from its locked configuration by a setting in motion of the slide causing an escape of the stop between said abutment portion and said abutment portion of the slide, and free to rotate said finger along the second axis , said escapement of the abutment leading to a rotation of the wheel under the effect of its constraint, causing the cam follower portion to disengage from said blocking portion of the cam surface by moving relative thereto , thanks to the rotation of said finger along the second axis.
De préférence, la partie formant butée du doigt de blocage comprend un rouleau rotatif autour d'un troisième axe sensiblement parallèle au deuxième axe et comportant une surface adaptée à venir en contact avec la portion formant butée de la glissière.Preferably, the abutment portion of the locking finger comprises a roller rotating about a third axis substantially parallel to the second axis and having a surface adapted to come into contact with the stop portion of the slide.
Avantageusement, la glissière est guidée dans son mouvement par au moins deux rouleaux rotatifs sur des axes.Advantageously, the slide is guided in its movement by at least two rotating rollers on axes.
De préférence, ledit ou lesdits rouleaux sont montés sur des bagues réalisées en polymère auto-lubrifié.Preferably, said one or more rollers are mounted on rings made of self-lubricated polymer.
Alternativement, ledit ou lesdits rouleaux sont montés sur des bagues réalisées en polytétrafluoroéthylène.Alternatively, said one or more rollers are mounted on rings made of polytetrafluoroethylene.
De préférence, ledit ou lesdits rouleaux et la surface de la glissière sont réalisés en acier.Preferably, said roller or rollers and the surface of the slideway are made of steel.
Dans un mode de réalisation de l'invention, ladite glissière comprend une portion adaptée à venir en contact avec la partie formant butée dudit doigt de blocage, ladite portion de glissière étant sensiblement adjacente à la portion de butée de la glissière et orientée de telle sorte que durant le dégagement du doigt, son contact avec la partie formant butée entraîne le déplacement de la glissière.In one embodiment of the invention, said slideway comprises a portion adapted to come into contact with the abutment portion of said locking finger, said slide portion being substantially adjacent to the abutment portion of the slide and oriented in such a way that that during the release of the finger, its contact with the abutment portion causes the movement of the slide.
De préférence, un levier de déclenchement est relié à ladite glissière de manière à commander le mouvement de ladite glissière.Preferably, a release lever is connected to said slideway so as to control the movement of said slideway.
La présente invention porte également sur un mécanisme de commande notamment d'interrupteur moyenne tension, comprenant un dispositif d'accrochage selon l'une des caractéristiques précédentes.The present invention also relates to a control mechanism including a medium voltage switch, comprising a hooking device according to one of the preceding characteristics.
D'autres avantages et caractéristiques de l'invention apparaîtront dans la description détaillée non limitative ci-dessous.Other advantages and features of the invention will become apparent in the detailed non-limiting description below.
On décrira à présent, à titre d'exemples non limitatifs, des modes de réalisation de l'invention, en se référant aux dessins annexés, dans lesquels :
- La
figure 1 est une vue partielle en perspective du mécanisme de commande d'interrupteur moyenne tension comprenant le dispositif d'accrochage selon le mode de réalisation préféré de l'invention, le dispositif d'accrochage occupant la configuration déverrouillée ; - La
figure 2 est une vue de face du dispositif d'accrochage montré sur lafigure 1 , occupant la configuration verrouillée ; - La
figure 3 est une vue de face du dispositif d'accrochage montré sur lafigure 1 , où le doigt de blocage est en cours de dégagement ; - La
figure 4 est une vue de face du dispositif d'accrochage montré sur lafigure 1 , occupant la configuration déverrouillée ; - La
figure 5 est une vue de face du dispositif d'accrochage selon un autre mode de réalisation de l'invention ; - La
figure 6 est une vue de face du dispositif d'accrochage selon encore un autre mode de réalisation de l'invention.
- The
figure 1 is a partial perspective view of the medium voltage switch control mechanism comprising the hooking device according to the preferred embodiment of the invention, the hooking device occupying the unlocked configuration; - The
figure 2 is a front view of the hooking device shown on thefigure 1 , occupying the locked configuration; - The
figure 3 is a front view of the hooking device shown on thefigure 1 , where the blocking finger is being released; - The
figure 4 is a front view of the hooking device shown on thefigure 1 , occupying the unlocked configuration; - The
figure 5 is a front view of the attachment device according to another embodiment of the invention; - The
figure 6 is a front view of the attachment device according to yet another embodiment of the invention.
Comme l'illustre schématiquement la
La roue de commande 10 présente en sa périphérie extérieure une surface de came 12. La surface de came 12 de la roue de commande 10 comprend au moins une portion de blocage 13 sous forme de décrochement en arc de cercle.The
Le dispositif d'accrochage selon l'invention comprend un doigt de blocage 20 monté tournant sur un deuxième axe 21 parallèle au premier axe 11. Le doigt de blocage 20 comprend une portion suiveuse de came 22 destinée à être au contact de la surface de came 12 de la roue de commande 10. Un moyen exerçant une force de rappel (non représenté), par exemple un ressort de torsion, est relié au doigt de blocage 20 de manière à maintenir le contact entre la portion suiveuse de came 22 du doigt de blocage 20 et la surface de came 12 de la roue de commande 10.The attachment device according to the invention comprises a locking
Dans ce mode de réalisation de l'invention, comme représenté dans la
Lors de la rotation anti-horaire de la roue de commande 10 du fait de l'effort exercé par le ressort spiral, la portion suiveuse de came 22 du doigt de blocage 20 se déplace le long de la surface de came 12 en restant en contact avec celle-ci. Comme le montre la
Dans le mode de réalisation préféré de l'invention, le dispositif d'accrochage comporte une glissière 30 comprenant une portion de butée 31. La glissière peut coulisser en translation de manière à contacter ou libérer la portion de butée 31 de la glissière 30 avec une partie formant butée 23 du doigt de blocage 20. La glissière 30 est disposée par rapport au doigt de blocage 20 de manière à bloquer la rotation du doigt 20 lorsque la partie formant butée 23 du doigt de blocage 20 est en contact avec la portion formant butée 31 de la glissière 30. Lorsqu'il y a échappement de la butée correspondant à l'absence de contact entre la partie formant butée 23 du doigt de blocage 20 et la portion formant butée 31 de la glissière 30, la rotation du doigt 20 est rendue libre. Ainsi la glissière 30 fonctionne comme une butée amovible.In the preferred embodiment of the invention, the attachment device comprises a
En fonctionnement, le dispositif d'accrochage selon l'invention est apte à occuper une configuration verrouillée dans laquelle la roue de commande 10 est immobilisée en rotation, comme illustré dans la
Le déclenchement du dispositif d'accrochage, autrement dit la libération du dispositif d'accrochage de sa configuration verrouillée, est assurée par la mise en mouvement de la glissière 30 provoquant l'échappement de la butée entre la partie formant butée 23 du doigt 20 et la portion de butée 31 de la glissière 30. La rotation du doigt 20 autour du deuxième axe 21 est rendue libre, autorisant alors le dégagement de la portion suiveuse de came 22 de la portion de blocage 13 de la surface de came 12.The triggering of the attachment device, that is to say the release of the attachment device from its locked configuration, is ensured by the setting in motion of the
Le dispositif d'accrochage selon l'invention présente un certain nombre d'avantages. Tout d'abord, l'effort de déclenchement du dispositif d'accrochage est réduit car il correspond seulement à l'effort nécessaire pour faire coulisser la glissière 30 et obtenir l'échappement de la butée entre la portion de butée 31 de la glissière 30 et la partie formant butée 23 du doigt 20. De plus, les efforts exercés sur la glissière 30 de manière indirecte par la roue de commande 10 sont réduits puisque repris en partie par l'axe 21 du doigt 20. Cela contribue à diminuer l'effort de déclenchement à appliquer à la glissière 30.The attachment device according to the invention has a certain number of advantages. First, the triggering force of the attachment device is reduced because it corresponds only to the force required to slide the
De plus, la réduction de l'effort de déclenchement permet de s'affranchir de l'utilisation de bielles de grande longueur. Aussi tout risque de déformation et donc de blocage voire de déclenchement intempestif est évité. Le dispositif d'accrochage selon l'invention présente donc une fiabilité accrue.In addition, the reduction of the triggering force makes it possible to overcome the use of long rods. Also any risk of deformation and thus blocking or inadvertent tripping is avoided. The attachment device according to the invention therefore has increased reliability.
Le dispositif d'accrochage selon l'invention, par le fait de ne pas avoir à utiliser de bielles ou de pièces de grande longueur, présente l'avantage d'un encombrement réduit.The attachment device according to the invention, by the fact of not having to use connecting rods or parts of great length, has the advantage of a small footprint.
Enfin, l'économie de pièces par rapport à l'art antérieur et la fiabilité accrue permettent de diminuer les coûts de réalisation ainsi que les coûts d'entretien.Finally, the economy of parts compared to the prior art and increased reliability can reduce the costs of implementation and maintenance costs.
Dans le mode de réalisation préféré de l'invention, la partie formant butée 23 du doigt de blocage 20 comprend un rouleau rotatif 23 autour d'un troisième axe 24 sensiblement parallèle au deuxième axe 21 et comportant une surface adaptée à venir en contact avec la portion formant butée 31 de la glissière 30. Ainsi, lors de la mise en mouvement de la glissière 30 pour obtenir l'échappement de la butée, la partie formant butée 23 du doigt 20 se déplace par roulement le long de la portion de butée 31 de la glissière 30. Cela permet de diminuer l'effort de déclenchement puisque les frottements entre la partie formant butée 23 du doigt 20 et la portion de butée 31 de la glissière 30 sont diminués.In the preferred embodiment of the invention, the
Avantageusement, la glissière 30 est guidée dans son mouvement par au moins deux rouleaux 32A et 32B rotatifs chacun autour des axes 33A et 33B sensiblement parallèles au troisième axe 24 et sensiblement perpendiculaires au sens de déplacement de la glissière 30, en contact permanent avec la surface de la glissière 30. Ainsi, la glissière 30 se déplace relativement aux deux rouleaux 32A et 32B les entraînant en rotation. Cela permet de diminuer l'effort de déclenchement puisque le déplacement de la glissière 30 ne se fait pas par glissement sur un support mais par roulement sur les deux rouleaux 32A et 32B. Rappelons que dans le cas du glissement d'une pièce en acier sur un support de même matériau, le coefficient de frottement cinématique à sec est de l'ordre de 10-1. Dans le cas du roulement d'un rouleau en acier de rayon par exemple centimétrique sur un support de même matériau, le coefficient de roulement est de l'ordre de 10-3, soit inférieur de deux ordres de grandeur au coefficient de frottement cinématique. L'effort de déclenchement est ainsi diminué.Advantageously, the
De manière à diminuer les frottements par roulement des rouleaux, les rouleaux 23, 32A et 32B peuvent être montés respectivement sur des bagues 25, 35A et 35B. Les matériaux des rouleaux 23, 32A et 32B, des bagues 25, 35A et 35B, et de la surface 34 de la glissière 30 sont choisis de manière à présenter un faible coefficient de roulement, de manière à diminuer l'effort de déclenchement comme expliqué précédemment. Avantageusement, les rouleaux 23, 32A et 32B ainsi que la surface 34 de la glissière 30 sont réalisés en acier, et les bagues 25, 35A et 35B sont réalisées en polymère auto-lubrifié. Le terme "auto-lubrifié" s'applique ici à un matériau dont le coefficient de frottement est suffisamment faible pour ne pas avoir à utiliser de lubrifiant à la surface de contact entre les bagues 25, 35A et 35B et, respectivement, les rouleaux 23, 32A et 32B. Avantageusement, le polymère auto-lubrifié peut être un fluoropolymère, par exemple du polytétrafluoroéthylène ou POM chargé en PTFE et/ou en silicone.In order to reduce the rolling friction of the rollers, the
Ainsi, il n'est pas nécessaire de graisser les pièces du dispositif d'accrochage. Les risques de vieillissement des graisses et de leur détérioration (dessiccation et coagulation) sont alors évités. De plus, cela permet d'éviter les opérations d'entretien en particulier de graissage et donc de diminuer les coûts.Thus, it is not necessary to grease the parts of the attachment device. The risks of aging fats and their deterioration (desiccation and coagulation) are then avoided. In addition, it avoids maintenance operations especially lubrication and thus lower costs.
Dans le mode de réalisation préféré de l'invention, la glissière 30 comprend une portion 36 adaptée à venir en contact avec la partie formant butée 23 dudit doigt de blocage 20. La portion 36 est sensiblement adjacente à la portion formant butée 31 de la glissière 30 et orientée de manière à subir un effort exercé par la partie formant butée 23 dudit doigt 20 lors de la rotation dudit doigt 20 sous l'effet de la rotation de ladite roue 10.In the preferred embodiment of the invention, the
Lorsque le doigt de blocage 20 est rendu libre en rotation par la mise en mouvement de la glissière 30, la partie formant butée 23 du doigt 20 vient en contact avec la portion 36 de la glissière 30. Le doigt 20 entraîné en rotation par la rotation de la roue 10 amène la partie formant butée 23 à se déplacer le long de la portion 36. La portion 36 est orientée de manière à ce que la partie formant butée 23 du doigt 20, dans son mouvement, exerce un effort sur la portion 36 de la glissière 30, amenant ainsi la glissière 30 à se déplacer en translation dans la direction de déclenchement. La
La présence de cette portion 36 de glissière 30 permet de minimiser le déplacement de la glissière nécessaire pour provoquer l'échappement de la butée. La glissière est ensuite poussée en translation sur une distance déterminée sous l'effet de l'effort exercé par le doigt en rotation. Cela permet de minimiser la course de déclenchement nécessaire.The presence of this
Dans le but de déclencher le dispositif d'accrochage selon l'invention, un levier de déclenchement 40 peut être prévu de manière à commander le mouvement de la glissière 30. Dans le mode de réalisation préféré de l'invention, le levier de déclenchement 40 est monté rotatif sur un axe 41 sensiblement parallèle à l'axe 21 du doigt 20. Le levier 40 comprend une lumière 42 sous forme d'évidement permettant la translation du levier 40 par rapport à l'axe 41. Le levier 40 est relié de manière pivotante à la glissière 30 de manière à ce que la rotation du levier 40 entraîne en translation la glissière 30.In order to trigger the attachment device according to the invention, a
Dans le mode de réalisation préféré de l'invention, un bâti de déclenchement 50 est prévu sur lequel sont montées solidaires les bagues 35A et 35B, ainsi que l'axe 41 du levier de déclenchement 40. Les axes 11, 21 et 41 sont montés de manière sensiblement perpendiculaire sur une platine (non représentée).In the preferred embodiment of the invention, a
Dans un autre mode alternatif de réalisation de l'invention, comme représenté dans la
La
Le déclenchement du dispositif d'accrochage peut être effectué par l'actionnement du levier de déclenchement 40, soit manuellement, soit de manière automatique. Il existe de nombreuses possibilités d'actionner le levier de déclenchement 40, par exemple par bouton poussoir dans le cas d'une action manuelle. Le levier de déclenchement 40 peut également être actionné par la fusion d'un fusible, ou par l'action d'un électro-aimant, ou encore par bobine à manque de tension ou par percuteur.The triggering of the attachment device can be effected by actuation of the
Le déclenchement du dispositif d'accrochage se traduit par la rotation de la roue 10 dont l'énergie de rotation permet l'actionnement de moyens mécaniques reliés à la roue 10 (non représentés) destinés à établir ou à couper le passage du courant dans la cellule de distribution.The triggering of the attachment device results in the rotation of the
Une fois le dispositif d'accrochage déclenché, l'enclenchement peut être effectué manuellement ou à l'aide d'une motorisation. Le levier de déclenchement 40 est alors actionné par un ressort de rappel fixé entre le levier de déclenchement 40 et le bâti 50 de manière à faire coulisser la glissière 30 dans la direction inverse à la direction de déclenchement. La partie formant butée 23 du doigt de blocage 20 se déplace le long de la portion 36 de la glissière puis vient en contact avec la portion de butée 31 de la glissière. Parallèlement, la portion suiveuse de came 22 du doigt 20 se déplace le long de la surface de came 12 jusqu'à venir en contact avec la portion de blocage 13 de la surface de came 12. Le dispositif d'accrochage se retrouve alors dans la configuration verrouillée. La roue de commande 10 est immobilisée en rotation d'une part par l'appui de la portion suiveuse de came 22 sur la portion de blocage 13 de la surface de came 12 et d'autre part par l'immobilisation en rotation du doigt 20 grâce à la retenue de sa partie formant butée 23 par la portion de butée 31 de la glissière 30.Once the hooking device is triggered, the engagement can be carried out manually or by means of a motorization. The
Claims (9)
ledit dispositif étant apte à occuper une configuration verrouillée dans laquelle ladite roue de commande (10) est immobilisée en rotation
ledit dispositif étant conçu pour être libéré de sa configuration verrouillée par une mise en mouvement de la glissière (30) provoquant un échappement de la butée entre ladite partie formant butée (23) et ladite portion de butée (31) de la glissière (30), et rendant libre en rotation ledit doigt (20) selon le deuxième axe (21), ledit échappement de la butée conduisant à une mise en rotation de la roue (10) sous l'effet de sa contrainte, poussant la portion suiveuse de came (22) à se dégager de ladite portion de blocage (13) de la surface de came (12) en se déplaçant relativement à celle-ci, grâce à la rotation dudit doigt (20) selon le deuxième axe (21).
said device being adapted to occupy a locked configuration in which said control wheel (10) is immobilized in rotation
said device being adapted to be released from its locked configuration by a movement of the slide (30) causing an escape of the stop between said abutment portion (23) and said abutment portion (31) of the slide (30) , and making said finger (20) free to rotate according to the second axle (21), said escapement of the abutment causing the rotation of the wheel (10) under the effect of its constraint, causing the cam follower portion (22) to disengage from said locking portion (13) the cam surface (12) moving relative thereto by rotation of said finger (20) along the second axis (21).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0759531A FR2924528B1 (en) | 2007-12-03 | 2007-12-03 | HANGING DEVICE FOR ELECTRICAL EQUIPMENT CONTROL MECHANISM AND CONTROL MECHANISM EQUIPPED WITH SUCH A DEVICE. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2068332A1 true EP2068332A1 (en) | 2009-06-10 |
EP2068332B1 EP2068332B1 (en) | 2011-01-12 |
Family
ID=39590998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08170271A Not-in-force EP2068332B1 (en) | 2007-12-03 | 2008-11-28 | A latching device for a control mechanism for electrical apparatus, and a control mechanism equipped with such a device. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2068332B1 (en) |
CN (1) | CN101452780B (en) |
AT (1) | ATE495536T1 (en) |
DE (1) | DE602008004416D1 (en) |
ES (1) | ES2359866T3 (en) |
FR (1) | FR2924528B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103366981A (en) * | 2013-07-09 | 2013-10-23 | 上海电器科学研究院 | Electric-operation mechanism capable of avoiding malfunction |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3083366B1 (en) * | 2018-06-29 | 2020-06-12 | Socomec | MANUAL CONTROL DEVICE FOR A REMOTE HANDLING SOURCE INVERTER |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2160980A1 (en) | 1971-11-23 | 1973-07-06 | Siemens Ag | |
US20070131526A1 (en) * | 2005-12-14 | 2007-06-14 | Eaton Corporation | Reverse bias hatchet reset spring |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4829278A (en) * | 1988-08-03 | 1989-05-09 | Westinghouse Electric Corp. | Circuit breaker trip bar interlock |
US6111486A (en) * | 1999-04-08 | 2000-08-29 | Eaton Corporation | Trip unit settings lock out assembly |
CN2478268Y (en) * | 2000-12-08 | 2002-02-20 | 上海宝菱电气控制设备有限公司 | Safety locking device of electrical high voltage switch cubicle |
CN2722480Y (en) * | 2004-06-24 | 2005-08-31 | 江苏东源电器集团股份有限公司 | Mechanically actuating locker of armoured switching cabinet |
-
2007
- 2007-12-03 FR FR0759531A patent/FR2924528B1/en not_active Expired - Fee Related
-
2008
- 2008-11-28 DE DE602008004416T patent/DE602008004416D1/en active Active
- 2008-11-28 EP EP08170271A patent/EP2068332B1/en not_active Not-in-force
- 2008-11-28 AT AT08170271T patent/ATE495536T1/en not_active IP Right Cessation
- 2008-11-28 ES ES08170271T patent/ES2359866T3/en active Active
- 2008-12-02 CN CN200810183330.3A patent/CN101452780B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2160980A1 (en) | 1971-11-23 | 1973-07-06 | Siemens Ag | |
US20070131526A1 (en) * | 2005-12-14 | 2007-06-14 | Eaton Corporation | Reverse bias hatchet reset spring |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103366981A (en) * | 2013-07-09 | 2013-10-23 | 上海电器科学研究院 | Electric-operation mechanism capable of avoiding malfunction |
Also Published As
Publication number | Publication date |
---|---|
FR2924528B1 (en) | 2009-12-25 |
FR2924528A1 (en) | 2009-06-05 |
ES2359866T3 (en) | 2011-05-27 |
EP2068332B1 (en) | 2011-01-12 |
DE602008004416D1 (en) | 2011-02-24 |
CN101452780A (en) | 2009-06-10 |
CN101452780B (en) | 2013-05-08 |
ATE495536T1 (en) | 2011-01-15 |
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