EP1637693B1 - Device for driving a roller of a roller shutter - Google Patents

Device for driving a roller of a roller shutter Download PDF

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Publication number
EP1637693B1
EP1637693B1 EP05300753A EP05300753A EP1637693B1 EP 1637693 B1 EP1637693 B1 EP 1637693B1 EP 05300753 A EP05300753 A EP 05300753A EP 05300753 A EP05300753 A EP 05300753A EP 1637693 B1 EP1637693 B1 EP 1637693B1
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EP
European Patent Office
Prior art keywords
apron
driving
winding
pulley
tube
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EP05300753A
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German (de)
French (fr)
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EP1637693A1 (en
Inventor
Louis Ferreira
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Bubendorff SA
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Bubendorff SA
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings

Definitions

  • the invention relates to a drive device for rolling shutter apron comprising, on the one hand, a winding tube around which is designed able to come winding said apron in the folded position and an unwinding axis including for the control of displacement of said apron and, secondly, at least one motor for driving in rotation of the unwinding shaft, as well as transmission means connecting it to the winding tube designed in such a way as to drive the latter according to a variable transmission ratio.
  • the present invention will find application in the field of building closure systems. It will find a particular interest in the field of roller shutters whose apron is intended to be deployed in an inclined or even flat, such as shutters for windows of roofs, verandas or similar.
  • a roller shutter comprises, in a usual manner, an apron composed of a juxtaposition of blades at least hinged together capable of being deployed from a winding tube, knowing that slides provide lateral guidance of this deck to ensure its deployment in front of a door, window or the like.
  • a drive mechanism acts on the winding tube to, depending on the direction of rotation communicated to the latter, control the deployment or folding of the deck.
  • the direction of rotation communicated to the winding tube has the effect of exerting traction on the deck which largely compensate for the friction forces of the latter. particularly in the lateral guidance of the slides in the wings.
  • US-A-0 541 696 discloses a driving device according to the preamble of claim 1.
  • the apron deploys, usually, under the effect of its own weight during the unwind command. If in a vertical position, the weight of the blades is sufficient to compensate for the friction forces to which reference has been made above, at the slightest inclination imparted to this roller shutter, these friction forces increase considerably and it is no longer possible. to ensure the deployment of the deck by gravity. In sum, in this case, it is advisable to push the apron behind the scenes.
  • a first solution consisted in conferring a driving function, as the case may be, on the unwinding shaft or the winding tube, this as a function of the direction of movement to be communicated to the deck.
  • the unwinding axis is driven, motorized or manual, whereas the rotation imparted to the winding tube through the deployment of the deck results in the tensioning of a spring of torsion.
  • this spring causes, in turn, the winding tube. Note that, if for this lift of the deck is acting on the manual or motorized means controlling the rotation of the unwinding shaft, this action has the sole function of releasing that of the spring for the drive of the winding tube.
  • a torsion spring is connected at one end to the winding tube, while the opposite end of this torsion spring is integral with a drive shaft connected by transmission means to the unwinding shaft.
  • the torsion spring can store a compressive force such that, at the moment of release, the roller shutter, in particular the apron, can be damaged.
  • the present invention attempts to address the problems of these known solutions.
  • the drive device makes it possible to preserve a mechanical transmission, whether manual or motorized, between the unwinding shaft and the winding tube, through a suitable gearbox. to provide a variable speed.
  • This gearbox is designed in the manner of a differential comprising an input pulley, an output pulley and at least one intermediate transmission wheel with relative mobility with respect to said input pulley and / or the output pulley, thanks to elastic return means.
  • the gear unit of the epicyclic type whose input pulley is in the form of a ring gear, is engaged with planetary gears meshing with the axial output pulley, said planetary gears being mounted in rotation on an axially pivotable planetary support to which is fixed one end of a torsion spring forming said elastic return means and the other end is fixed.
  • the invention relates to a drive device for rolling shutter apron comprising, on the one hand, a winding tube around which is designed able to come winding said apron in the folded position and an unwinding axis for the control of deployment of this apron and, secondly, means for driving the unwinding axis in rotation, as well as transmission means connecting it to the winding tube designed in such a way as to drive the latter in accordance with a variable transmission ratio, characterized in that said transmission means comprise a geared designed adapted to retransmitting the winding tube a variable speed under the impetus of the rotary drive means acting on the unwinding axis.
  • the present invention is in the field of shutters 1, in particular those whose apron 2 is provided capable of being deployed in a flat position or more or less inclined, such as roller shutters 1 for roof window, porch or the like 3.
  • the apron 2 of such a roller shutter 1 is composed of a juxtaposition of blades 4 at least hinged together that can be deployed from a winding tube 5 knowing that the slides 6 provide the lateral guidance of the deck 2 to ensure its deployment in front of the window 3 or the like.
  • the invention relates more particularly to a device 7 for driving such an apron 2 shutter 1.
  • This drive device 7 comprises a winding tube 5 around which is designed able to come wind up said apron 2 in the folded position and an unwinding axis 8 for the deployment command of the latter.
  • Drive means 9 are provided for rotating the unwinding shaft 8 and transmission means 10, connecting the latter to the winding tube 5, are designed in such a way as to drive the latter in a variable transmission ratio. .
  • Said transmission means 10 comprise, advantageously, a gear 11 designed to retransmit the winding tube 5 a variable speed through the rotating drive means 9 acting on the unwinding shaft 8.
  • This gear 11 may be designed in the manner of a differential having an input pulley 12, an axial output pulley 13, which may be in the form of an output gear, and at least one intermediate transmission wheel 14. The latter is relatively mobile with respect to said input pulley 12 and / or the output pulley 13 by means of elastic return means 15.
  • the gear 11 is of the epicyclic type whose input pulley 12, which may be in the form of a ring gear 16, is engaged with planetary gears 17 constituting substantially the intermediate transmission wheel 14 and meshing with the pulley outlet 13 secured in rotation to the winding tube 5.
  • Said planetary gears 17 are rotatably mounted on a planetary support 19 pivoting axially. On the latter is fixed one of the ends 20 of a torsion spring 21 forming said elastic return means 15, knowing that the other end 22 of this spring 21 is secured to a fixed point 23.
  • the end 22 of said spring 21 is integral with said fixed point 23 through a torque limiter 24 avoiding undue strain on the spring 21 in torsion.
  • the fixed point 23 may be located on a support cheek 25 or on a flange serving as a housing for said drive device 7, as visible on the figures 2 and 4 .
  • the torque limiter 24 of the torsion of the spring 21 may be in the form of a ring gear 26 immobilized in rotation engaged with a toothing complementary shape of a ring 27 rotatable, knowing that at least one of these rings 26, 27 is still axially movable relative to the other ring, against the restoring force of elastic means.
  • the teeth of the rings 26, 27 are designed to allow sliding of the movable ring 27 relative to the fixed ring 26, the teeth of the teeth being preferably inclined.
  • the elastic return means they may be in the form of a conical spring washer 28, called Belleville. This washer 28 provides resistance to the axial displacement of a ring 27 relative to the other ring 26 which allows said torque limiter 24 declutching by disengaging beyond a certain resistant torque.
  • the end 22 of the torsion spring 21 is integral with a housing 29 provided in the movable ring 27 of said torque limiter 24.
  • Means 30 may be designed capable of adjusting the tension of the spring 21 in order to put the latter under stress during installation or in the context of post-sale interventions on the roller shutter 1. These adjustment means 30 are designed able to intervene on the angular position of the fixed ring 26, as visible on the figure 2 .
  • the unwinding shaft 8 drives the pulley 12 and thus the ring 16, for example by means of a belt transmission, as shown in FIG. Figures 2 to 4 or by suitable gears
  • the planet gears 17 rotate on the planetary support 19, in turn driving the output pulley 13 which actuates the winding tube 5.
  • the latter then rotates at the same speed as the unwinding axis 8.
  • the latter being rigid and maintained by the unwinding shaft 8, the relative speed of winding of the deck decreases and thus the angular speed of the output pulley 13.
  • This differential of speed is compensated by a relative rotation of the planetary support 19 by driving the spring 21 which is then subjected to torsional stress and the energy thus accumulated will be able to contribute to the deployment phase of the deck 2.
  • the device according to the invention makes it possible to rotate the winding tube 5 in the opposite direction as the unwinding axis 8, as can be seen from the illustrated embodiments.
  • the invention is not limited to such a particular embodiment. Indeed, if the input pulley 12, forming the ring 16, can be driven by belt through the unwinding axis 8, the transmission can still be envisaged by means of gears, solution not visible in the drawings, to obtain the desired direction of rotation and, in particular, that the winding tube 5 rotates in the same direction as the unwinding axis 8.
  • the first embodiment visible on the figures 2 and 3 , comprises its unwinding axis 8 and a winding tube 5 located on one side of the support cheek 25, while the transmission means 10 are located on the other side of said support cheek 25.
  • the winding tube 5 and the transmission means 10 are located on one and the same side of the support cheek 25. Moreover, said transmission means 10 are designed to be inserted partly in inside the winding tube 5.
  • the input pulley 12 may be in the form of a disc extended axially by the ring 16.
  • This ring 16 is designed to be inserted longitudinally inside the winding tube 5 and to to be free in rotation with respect to the latter once positioned inside.
  • the invention also relates to a shutter 1 for windows of roofs, verandas or the like, comprising an inclined deck 2 and a drive device 7 according to the invention.

Description

L'invention concerne un dispositif d'entraînement pour tablier de volet roulant comportant, d'une part, un tube d'enroulement autour duquel est conçu apte à venir s'enrouler ledit tablier en position repliée et un axe dérouleur notamment pour la commande de déplacement dudit tablier et, d'autre part, au moins un moteur pour l'entraînement en rotation de l'axe dérouleur, ainsi que des moyens de transmission reliant celui-ci au tube d'enroulement conçu de manière apte à entraîner ce dernier selon un rapport de transmission variable.The invention relates to a drive device for rolling shutter apron comprising, on the one hand, a winding tube around which is designed able to come winding said apron in the folded position and an unwinding axis including for the control of displacement of said apron and, secondly, at least one motor for driving in rotation of the unwinding shaft, as well as transmission means connecting it to the winding tube designed in such a way as to drive the latter according to a variable transmission ratio.

La présente invention trouvera son application dans le domaine des systèmes de fermeture pour bâtiment. Elle trouvera un intérêt tout particulier dans le domaine des volets roulants dont le tablier est prévu pour se déployer dans une position inclinée, voire plane, tels que des volets roulants pour fenêtres de toits, vérandas ou similaire.The present invention will find application in the field of building closure systems. It will find a particular interest in the field of roller shutters whose apron is intended to be deployed in an inclined or even flat, such as shutters for windows of roofs, verandas or similar.

Un volet roulant comporte, d'une manière usuelle, un tablier composé d'une juxtaposition de lames au moins articulées entre elles susceptibles de se déployer depuis un tube d'enroulement, sachant que des coulisses assurent le guidage latéral de ce tablier pour garantir son déploiement au-devant d'une porte, fenêtre ou analogue.A roller shutter comprises, in a usual manner, an apron composed of a juxtaposition of blades at least hinged together capable of being deployed from a winding tube, knowing that slides provide lateral guidance of this deck to ensure its deployment in front of a door, window or the like.

Généralement, un mécanisme d'entraînement vient agir sur le tube d'enroulement pour, en fonction du sens de rotation communiqué à ce dernier, commander le déploiement ou le repliement du tablier. A noter, à ce propos, que pour assurer la remontée d'un tablier, le sens de rotation communiqué au tube d'enroulement a pour conséquence d'exercer une traction sur ce tablier qui vient largement compenser les forces de frottement de ce dernier en particulier au niveau du guidage latéral des lames dans les coulisses.Generally, a drive mechanism acts on the winding tube to, depending on the direction of rotation communicated to the latter, control the deployment or folding of the deck. Note, in this regard, that to ensure the recovery of an apron, the direction of rotation communicated to the winding tube has the effect of exerting traction on the deck which largely compensate for the friction forces of the latter. particularly in the lateral guidance of the slides in the wings.

US-A-0 541 696 décrit un dispositif d'entraînement selon le préambule du revendication 1. US-A-0 541 696 discloses a driving device according to the preamble of claim 1.

A l'inverse, le tablier se déploie, habituellement, sous l'effet de son propre poids lors de la commande de déroulement. Si dans une position verticale, le poids des lames est suffisant pour compenser les forces de frottement auxquelles il a été fait référence plus haut, à la moindre inclinaison conférée à ce volet roulant, ces forces de frottement augmentent considérablement et il n'est plus possible d'assurer le déploiement du tablier par simple gravité. En somme, dans ce cas, il convient de pousser le tablier dans les coulisses.Conversely, the apron deploys, usually, under the effect of its own weight during the unwind command. If in a vertical position, the weight of the blades is sufficient to compensate for the friction forces to which reference has been made above, at the slightest inclination imparted to this roller shutter, these friction forces increase considerably and it is no longer possible. to ensure the deployment of the deck by gravity. In sum, in this case, it is advisable to push the apron behind the scenes.

Différentes solutions ont été adoptées pour surmonter cette difficulté. Ainsi, il est tout particulièrement connu de faire appel à un axe dérouleur qui s'étend parallèlement et en aval du tube d'enroulement et comporte des moyens d'engrènement ou similaires qui, par action sur les lames du tablier, repoussent celui-ci dans les coulisses de guidage en phase de déploiement.Different solutions have been adopted to overcome this difficulty. Thus, it is particularly known to use an unwinding axis which extends parallel and downstream of the winding tube and comprises meshing means or the like which, by action on the deck blades, repel it in the guide slides during the deployment phase.

En particulier, il est connu de ménager à l'extrémité de cet axe dérouleur des pignons d'entraînement susceptibles de venir en prise, selon le cas, avec des ouvertures ménagées dans les extrémités des lames du tablier ou encore des doigts d'entraînement dont sont pourvues ces lames au niveau de leurs chants d'extrémité.In particular, it is known to provide at the end of this unwinding axis drive sprockets capable of engaging, as the case may be, with openings in the ends of the apron blades or training fingers of which are provided with these blades at their end edges.

On comprend bien qu'en raison des multiples spires formées par le tablier autour du tube d'enroulement, pour une vitesse de rotation déterminée conférée à ce dernier, il en résulte une vitesse de déplacement linéaire dudit tablier qui est variable. Au contraire, une vitesse de rotation déterminée conférée à l'axe dérouleur produit un entraînement à vitesse linéaire constante du tablier.It is understood that because of the multiple turns formed by the apron around the winding tube, for a given rotational speed imparted to the latter, this results in a linear movement speed of said apron which is variable. On the contrary, a determined rotational speed imparted to the unwinding axis produces a constant linear speed drive of the apron.

Pour surmonter cette difficulté, une première solution a consisté à conférer une fonction motrice, selon le cas, à l'axe dérouleur ou au tube d'enroulement, ceci en fonction du sens de déplacement à communiquer au tablier.To overcome this difficulty, a first solution consisted in conferring a driving function, as the case may be, on the unwinding shaft or the winding tube, this as a function of the direction of movement to be communicated to the deck.

Par exemple, en phase de déploiement on vient entraîner, de manière motorisée ou manuelle, l'axe dérouleur, tandis que la rotation conférée au tube d'enroulement au travers du déploiement du tablier a pour conséquence la mise sous tension d'un ressort de torsion. Lors du repliement, ce ressort entraîne, à son tour, le tube d'enroulement. A noter que, si pour cette remontée du tablier on agit sur les moyens manuels ou motorisés commandant la rotation de l'axe dérouleur, cette action a pour seule fonction de libérer celle du ressort en vue de l'entraînement du tube d'enroulement.For example, in the deployment phase, the unwinding axis is driven, motorized or manual, whereas the rotation imparted to the winding tube through the deployment of the deck results in the tensioning of a spring of torsion. When folding, this spring causes, in turn, the winding tube. Note that, if for this lift of the deck is acting on the manual or motorized means controlling the rotation of the unwinding shaft, this action has the sole function of releasing that of the spring for the drive of the winding tube.

Cette solution présente essentiellement l'inconvénient de solliciter considérablement le ressort de torsion et pose le problème de sa fatigue. Elle nécessite dans tous les cas l'usage d'un ressort de qualité plus onéreux. Dans tous les cas, cette contrainte appliquée au ressort est nécessairement répercutée sur l'ensemble des pièces mécaniques du volet roulant et génère là encore une certaine fatigue de ces pièces réduisant leur longévité.This solution has the disadvantage of essentially solicit the torsion spring and poses the problem of its fatigue. It requires in all cases the use of a more expensive quality spring. In all cases, this stress applied to the spring is necessarily passed on all the mechanical parts of the shutter and again generates a certain fatigue of these parts reducing their longevity.

En outre, lors du montage le ressort de torsion doit être précontraint ce qui rend cette opération, tout comme les interventions après vente, particulièrement contraignants.In addition, during assembly the torsion spring must be prestressed which makes this operation, as post-sales interventions, particularly restrictive.

Il est également connu, par le document EP-1.131.530 , un tel volet roulant dont le tablier est susceptible de venir s'enrouler autour d'un tube d'enroulement sachant qu'un axe dérouleur qui, en fonction des manoeuvres, tourne dans le même sens de rotation que le tube d'enroulement, agit sur ledit tablier par l'intermédiaire d'éléments d'entraînement appropriés.He is also known, by the document EP-1131530 such a roller shutter whose apron is likely to come to wind around a winding tube knowing that an unwinding axis which, depending on maneuvers, rotates in the same direction of rotation as the winding tube, acts on said apron by means of appropriate driving elements.

Par ailleurs, un ressort de torsion est relié, à une extrémité, au tube d'enroulement, tandis que l'extrémité opposée de ce ressort de torsion est solidaire d'un arbre d'entraînement relié par des moyens de transmission à l'axe dérouleur.
En somme, on vient résoudre, ici, le problème technique posé par le différentiel de rotation entre le tube d'enroulement et l'axe dérouleur par un ressort de torsion au travers duquel ce dernier transmet son mouvement au tube d'enroulement.Moreover, a torsion spring is connected at one end to the winding tube, while the opposite end of this torsion spring is integral with a drive shaft connected by transmission means to the unwinding shaft.
In sum, here we solve the technical problem posed by the rotation differential between the winding tube and the unwinding shaft by a torsion spring through which the latter transmits its movement to the winding tube.

Cependant, en cas de blocage le ressort de torsion peut emmagasiner une force de compression telle, qu'au moment de se relâcher, le volet roulant, en particulier, le tablier, peut être endommagé.However, in the event of a blockage, the torsion spring can store a compressive force such that, at the moment of release, the roller shutter, in particular the apron, can be damaged.

Une autre solution a consisté à équiper, à la fois, l'axe dérouleur et le tube d'enroulement de moyens d'entraînement, notamment motorisés, présentant la particularité d'être débrayable. En somme, en fonction de la manoeuvre, les moyens d'entraînement de l'axe dérouleur ou du tube d'enroulement son activés, sachant que, réciproquement, les moyens d'entraînement du tube d'enroulement ou de l'axe dérouleur sont débrayés. Evidemment, une telle conception s'avère relativement onéreuse.Another solution consisted in equipping both the unwinding shaft and the winding tube with drive means, in particular motorized, having the particularity of being disengageable. In short, depending on the operation, the drive means of the unwinding shaft or the winding tube are activated, knowing that, conversely, the driving means of the winding tube or unwinding shaft are disengaged. Obviously, such a design is relatively expensive.

La présente invention tente de répondre aux problèmes de ces solutions connues.The present invention attempts to address the problems of these known solutions.

Tout particulièrement, le dispositif d'entraînement, conforme à l'invention, permet de préserver une transmission mécanique, qu'elle soit manuelle ou motorisée, entre l'axe dérouleur et le tube d'enroulement, ceci au travers d'un réducteur apte à procurer une vitesse variable. Ce réducteur est conçu à la manière d'un différentiel comportant une poulie d'entrée, une poulie de sortie et au moins une roue de transmission intermédiaire à mobilité relative par rapport à ladite poulie d'entrée et/ou à la poulie de sortie, grâce à des moyens de rappel élastique.In particular, the drive device according to the invention makes it possible to preserve a mechanical transmission, whether manual or motorized, between the unwinding shaft and the winding tube, through a suitable gearbox. to provide a variable speed. This gearbox is designed in the manner of a differential comprising an input pulley, an output pulley and at least one intermediate transmission wheel with relative mobility with respect to said input pulley and / or the output pulley, thanks to elastic return means.

Le réducteur, du type épicycloïdal dont la poulie d'entrée est en forme de couronne, est en prise avec des pignons planétaires s'engrenant sur la poulie de sortie axial, lesdits pignons planétaires étant montés en rotation sur un support planétaire pivotant axialement auquel est fixée l'une des extrémités d'un ressort de torsion formant lesdits moyens de rappel élastique et dont l'autre extrémité est fixe.The gear unit, of the epicyclic type whose input pulley is in the form of a ring gear, is engaged with planetary gears meshing with the axial output pulley, said planetary gears being mounted in rotation on an axially pivotable planetary support to which is fixed one end of a torsion spring forming said elastic return means and the other end is fixed.

Ainsi, l'invention concerne un dispositif d'entraînement pour tablier de volet roulant comportant, d'une part, un tube d'enroulement autour duquel est conçu apte à venir s'enrouler ledit tablier en position repliée et un axe dérouleur pour la commande de déploiement de ce tablier et, d'autre part, des moyens d'entraînement en rotation de l'axe dérouleur, ainsi que des moyens de transmission reliant celui-ci au tube d'enroulement conçus de manière apte à entraîner ce dernier selon un rapport de transmission variable, caractérisé par le fait que lesdits moyens de transmission comportent un réducteur conçu apte à retransmettre au tube d'enroulement une vitesse variable sous l'impulsion des moyens d'entraînement en rotation agissant sur l'axe dérouleur.Thus, the invention relates to a drive device for rolling shutter apron comprising, on the one hand, a winding tube around which is designed able to come winding said apron in the folded position and an unwinding axis for the control of deployment of this apron and, secondly, means for driving the unwinding axis in rotation, as well as transmission means connecting it to the winding tube designed in such a way as to drive the latter in accordance with a variable transmission ratio, characterized in that said transmission means comprise a geared designed adapted to retransmitting the winding tube a variable speed under the impetus of the rotary drive means acting on the unwinding axis.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre se rapportant à des exemples de réalisation qui ne sont donnés qu'à titre d'exemples indicatifs et non limitatifs.Other objects and advantages of the present invention will become apparent from the following description relating to exemplary embodiments which are given only by way of indicative and non-limiting examples.

La compréhension de cette description sera facilitée en se référant aux dessins ci-joints dans lesquels :

  • la figure 1 est une représentation schématisée et en perspective d'un volet roulant comportant un dispositif d'entraînement selon l'invention ;
  • la figure 2 est une représentation schématisée sous forme d'une vue éclatée du dispositif d'entraînement selon un premier mode de réalisation ;
  • la figure 3 illustre de manière schématisée, ce dispositif d'entraînement correspondant à la figure 2, ceci dans une vue en élévation ;
  • la figure 4 est une représentation similaire à la figure 2 illustrant le dispositif d'entraînement conçu selon un second mode de réalisation ;
  • la figure 5 est une vue schématisée et en coupe du réducteur épicycloïdal correspondant à ce second mode de réalisation visible dans la figure 4.
The understanding of this description will be facilitated by reference to the accompanying drawings in which:
  • the figure 1 is a schematic representation in perspective of a shutter comprising a drive device according to the invention;
  • the figure 2 is a schematic representation in the form of an exploded view of the driving device according to a first embodiment;
  • the figure 3 schematically illustrates, this training device corresponding to the figure 2 this in an elevation view;
  • the figure 4 is a representation similar to the figure 2 illustrating the driving device designed according to a second embodiment;
  • the figure 5 is a schematic and sectional view of the epicyclic reduction gear corresponding to this second embodiment visible in FIG. figure 4 .

La présente invention entre dans le domaine des volets roulants 1, en particulier de ceux dont le tablier 2 est prévu apte à se déployer dans une position plane voire plus ou moins inclinée, tels que des volets roulants 1 pour fenêtre de toit, véranda ou similaire 3.The present invention is in the field of shutters 1, in particular those whose apron 2 is provided capable of being deployed in a flat position or more or less inclined, such as roller shutters 1 for roof window, porch or the like 3.

Le tablier 2 d'un tel volet roulant 1 est composé d'une juxtaposition de lames 4 au moins articulées entre elles susceptibles de se déployer depuis un tube d'enroulement 5 sachant que des coulisses 6 assurent le guidage latéral de ce tablier 2 pour assurer son déploiement au-devant de la fenêtre 3 ou analogue.The apron 2 of such a roller shutter 1 is composed of a juxtaposition of blades 4 at least hinged together that can be deployed from a winding tube 5 knowing that the slides 6 provide the lateral guidance of the deck 2 to ensure its deployment in front of the window 3 or the like.

L'invention concerne plus particulièrement un dispositif 7 pour l'entraînement d'un tel tablier 2 de volet roulant 1. Ce dispositif d'entraînement 7 comporte un tube d'enroulement 5 autour duquel est conçu apte à venir s'enrouler ledit tablier 2 en position repliée et un axe dérouleur 8 pour la commande de déploiement de ce dernier.The invention relates more particularly to a device 7 for driving such an apron 2 shutter 1. This drive device 7 comprises a winding tube 5 around which is designed able to come wind up said apron 2 in the folded position and an unwinding axis 8 for the deployment command of the latter.

Des moyens d'entraînement 9 sont prévus pour entraîner en rotation l'axe dérouleur 8 et des moyens de transmission 10, reliant celui-ci au tube d'enroulement 5, sont conçus de manière apte à entraîner ce dernier selon un rapport de transmission variable.Drive means 9 are provided for rotating the unwinding shaft 8 and transmission means 10, connecting the latter to the winding tube 5, are designed in such a way as to drive the latter in a variable transmission ratio. .

Lesdits moyens de transmission 10 comportent, avantageusement, un réducteur 11 conçu apte à retransmettre au tube d'enroulement 5 une vitesse variable au travers des moyens d'entraînement en rotation 9 agissant sur l'axe dérouleur 8.Said transmission means 10 comprise, advantageously, a gear 11 designed to retransmit the winding tube 5 a variable speed through the rotating drive means 9 acting on the unwinding shaft 8.

Ce réducteur 11 peut être conçu à la manière d'un différentiel comportant une poulie d'entrée 12, une poulie de sortie axiale 13, qui peut se présenter sous la forme d'un pignon de sortie, et au moins une roue de transmission intermédiaire 14. Cette dernière est à mobilité relative par rapport à ladite poulie d'entrée 12 et/ou à la poulie de sortie 13 grâce à des moyens de rappel élastique 15.This gear 11 may be designed in the manner of a differential having an input pulley 12, an axial output pulley 13, which may be in the form of an output gear, and at least one intermediate transmission wheel 14. The latter is relatively mobile with respect to said input pulley 12 and / or the output pulley 13 by means of elastic return means 15.

Dans le mode de réalisation plus particulièrement visible sur les figures 2 et 3, le réducteur 11 est du type épicycloïdal dont la poulie d'entrée 12, qui peut présenter la forme d'une couronne 16, est en prise avec des pignons planétaires 17 constituant substantiellement la roue de transmission intermédiaire 14 et s'engrenant sur la poulie de sortie 13 solidaire en rotation du tube d'enroulement 5.In the embodiment more particularly visible on the figures 2 and 3 , the gear 11 is of the epicyclic type whose input pulley 12, which may be in the form of a ring gear 16, is engaged with planetary gears 17 constituting substantially the intermediate transmission wheel 14 and meshing with the pulley outlet 13 secured in rotation to the winding tube 5.

Lesdits pignons planétaires 17 sont montés en rotation sur un support planétaire 19 pivotant axialement. Sur ce dernier est fixé l'une des extrémités 20 d'un ressort de torsion 21 formant lesdits moyens de rappel élastique 15, sachant que l'autre extrémité 22 de ce ressort 21 est rendu solidaire d'un point fixe 23.Said planetary gears 17 are rotatably mounted on a planetary support 19 pivoting axially. On the latter is fixed one of the ends 20 of a torsion spring 21 forming said elastic return means 15, knowing that the other end 22 of this spring 21 is secured to a fixed point 23.

Dans un mode de réalisation particulier, visible sur les figures, l'extrémité 22 dudit ressort 21 est solidaire dudit point fixe 23 au travers d'un limiteur de couple 24 évitant de contraindre de manière excessive le ressort 21 en torsion.
Le point fixe 23 peut être situé sur une joue support 25 ou sur une flasque servant de carter audit dispositif d'entraînement 7, comme visible sur les figures 2 et 4.In a particular embodiment, visible in the figures, the end 22 of said spring 21 is integral with said fixed point 23 through a torque limiter 24 avoiding undue strain on the spring 21 in torsion.
The fixed point 23 may be located on a support cheek 25 or on a flange serving as a housing for said drive device 7, as visible on the figures 2 and 4 .

Le limiteur de couple 24 de la torsion du ressort 21 peut se présenter sous la forme d'une couronne 26 dentée immobilisée en rotation en prise avec une denture de forme complémentaire d'une couronne 27 mobile en rotation, sachant que l'une au moins de ces couronnes 26, 27 est encore mobile axialement relativement par rapport à l'autre couronne, contre la force de rappel de moyens élastiques.The torque limiter 24 of the torsion of the spring 21 may be in the form of a ring gear 26 immobilized in rotation engaged with a toothing complementary shape of a ring 27 rotatable, knowing that at least one of these rings 26, 27 is still axially movable relative to the other ring, against the restoring force of elastic means.

Ainsi, les dentures des couronnes 26, 27 sont conçues aptes à permettre le glissement de la couronne mobile 27 par rapport à la couronne fixe 26, les dents des dentures étant de préférence inclinées. Quant aux moyens élastiques de rappel, ils peuvent se présenter sous la forme d'une rondelle ressort conique 28, dite Belleville. Cette rondelle 28 offre une résistance au déplacement axial d'une couronne 27 par rapport à l'autre couronne 26 ce qui permet audit limiteur de couple 24 le débrayage par désengrènement au-delà d'un certain couple résistant.Thus, the teeth of the rings 26, 27 are designed to allow sliding of the movable ring 27 relative to the fixed ring 26, the teeth of the teeth being preferably inclined. As for the elastic return means, they may be in the form of a conical spring washer 28, called Belleville. This washer 28 provides resistance to the axial displacement of a ring 27 relative to the other ring 26 which allows said torque limiter 24 declutching by disengaging beyond a certain resistant torque.

Dans les modes de réalisation visibles sur les dessins en annexe, l'extrémité 22 du ressort de torsion 21 est solidaire d'un logement 29 prévu dans la couronne mobile 27 dudit limiteur de couple 24.In the embodiments shown in the appended drawings, the end 22 of the torsion spring 21 is integral with a housing 29 provided in the movable ring 27 of said torque limiter 24.

Des moyens 30 peuvent être conçus aptes à régler la tension du ressort 21 afin de mettre ce dernier sous contrainte lors de la mise en place ou dans le cadre d'interventions après vente sur le volet roulant 1. Ces moyens de réglage 30 sont conçus aptes à intervenir sur la position angulaire de la couronne fixe 26, comme visible sur la figure 2.Means 30 may be designed capable of adjusting the tension of the spring 21 in order to put the latter under stress during installation or in the context of post-sale interventions on the roller shutter 1. These adjustment means 30 are designed able to intervene on the angular position of the fixed ring 26, as visible on the figure 2 .

Lorsque l'axe dérouleur 8 entraîne la poulie 12 et ainsi la couronne 16, par exemple au moyen d'une transmission par courroie, comme représenté sur les figures 2 à 4, ou par engrenages adaptés, les pignons planétaires 17 tournent en rotation sur le support planétaire 19, entraînant à leur tour la poulie de sortie 13 qui actionne le tube d'enroulement 5. Ce dernier tourne alors à la même vitesse que l'axe dérouleur 8. Au fur et à mesure de l'enroulement autour du tube d'enroulement 5 du tablier 2, celui-ci forme des spires en augmentant la section d'enroulement autour du tube 5, ce qui a pour conséquence d'augmenter la vitesse relative d'enroulement à la périphérie du tablier 2. Toutefois, ce dernier étant rigide et maintenu par l'axe dérouleur 8, la vitesse relative d'enroulement du tablier diminue et ainsi la vitesse angulaire de la poulie de sortie 13. Ce différentiel de vitesse est compensé par une rotation relative du support planétaire 19 en entraînant le ressort 21 qui est alors mis sous contrainte de torsion et l'énergie ainsi accumulée va pouvoir contribuer à la phase de déploiement du tablier 2.When the unwinding shaft 8 drives the pulley 12 and thus the ring 16, for example by means of a belt transmission, as shown in FIG. Figures 2 to 4 or by suitable gears, the planet gears 17 rotate on the planetary support 19, in turn driving the output pulley 13 which actuates the winding tube 5. The latter then rotates at the same speed as the unwinding axis 8. As winding around the winding tube 5 of the apron 2, it forms turns by increasing the winding section around the tube 5, which has the effect of increasing the speed relative winding at the periphery of the apron 2. However, the latter being rigid and maintained by the unwinding shaft 8, the relative speed of winding of the deck decreases and thus the angular speed of the output pulley 13. This differential of speed is compensated by a relative rotation of the planetary support 19 by driving the spring 21 which is then subjected to torsional stress and the energy thus accumulated will be able to contribute to the deployment phase of the deck 2.

En effet, en sens inverse, lors du déroulement du tablier 2, la charge accumulée par le ressort 21 permet d'accélérer la poulie de sortie 13 et ainsi la vitesse angulaire du tube d'enroulement 5 par rapport à la vitesse angulaire qui lui serait normalement communiqué par le réducteur, le support planétaire 19 fixe en rotation.Indeed, in the opposite direction, during the unwinding of the deck 2, the load accumulated by the spring 21 accelerates the output pulley 13 and thus the angular speed of the winding tube 5 with respect to the angular speed that would be normally communicated by the gearbox, the planetary support 19 fixed in rotation.

Le dispositif selon l'invention permet d'entraîner en rotation le tube d'enroulement 5 en sens inverse que l'axe dérouleur 8, comme visible des modes de réalisation illustrés. Toutefois, l'invention n'est nullement limitée à un tel mode de réalisation particulier. En effet, si la poulie d'entrée 12, formant la couronne 16, peut-être entraînée par courroie au travers de l'axe dérouleur 8, la transmission peut encore être envisagée au moyen d'engrenages, solution non visible sur les dessins, permettant d'obtenir le sens de rotation souhaité et, en particulier, que tube d'enroulement 5 tourne dans le même sens que l'axe dérouleur 8.The device according to the invention makes it possible to rotate the winding tube 5 in the opposite direction as the unwinding axis 8, as can be seen from the illustrated embodiments. However, the invention is not limited to such a particular embodiment. Indeed, if the input pulley 12, forming the ring 16, can be driven by belt through the unwinding axis 8, the transmission can still be envisaged by means of gears, solution not visible in the drawings, to obtain the desired direction of rotation and, in particular, that the winding tube 5 rotates in the same direction as the unwinding axis 8.

Deux modes de réalisation différents du dispositif d'entraînement 7 selon l'invention sont représentés, d'une part, sur les figures 2 et 3 et, d'autre part, sur les figures 4 et 5. Ces deux modes de réalisation fonctionnent selon le même principe décrit précédemment, mais diffèrent l'un de l'autre par l'agencement de différents moyens.Two different embodiments of the driving device 7 according to the invention are represented, on the one hand, on the figures 2 and 3 and, on the other hand, figures 4 and 5 . These two embodiments operate according to the same principle described above, but differ from each other by the arrangement of different means.

Le premier mode de réalisation, visible sur les figures 2 et 3, comprend son axe dérouleur 8 et un tube d'enroulement 5 situés d'un côté de la joue support 25, alors que les moyens de transmission 10 se situent de l'autre côté de ladite joue support 25.The first embodiment, visible on the figures 2 and 3 , comprises its unwinding axis 8 and a winding tube 5 located on one side of the support cheek 25, while the transmission means 10 are located on the other side of said support cheek 25.

Dans le second mode de réalisation, représenté dans les figures 4 et 5, outre l'axe dérouleur 8, le tube d'enroulement 5 et les moyens de transmission 10 se situent d'un même côté de la joue support 25. Par ailleurs, lesdits moyens de transmission 10 sont conçus aptes à être insérés en partie à l'intérieur du tube d'enroulement 5.In the second embodiment, shown in figures 4 and 5 in addition to the unwinding axis 8, the winding tube 5 and the transmission means 10 are located on one and the same side of the support cheek 25. Moreover, said transmission means 10 are designed to be inserted partly in inside the winding tube 5.

Pour ce faire, la poulie d'entrée 12 peut se présenter sous la forme d'un disque prolongé axialement par la couronne 16. Cette couronne 16 est conçue apte à s'insérer longitudinalement à l'intérieur du tube d'enroulement 5 et à être libre en rotation par rapport à ce dernier une fois positionnée à l'intérieur.To do this, the input pulley 12 may be in the form of a disc extended axially by the ring 16. This ring 16 is designed to be inserted longitudinally inside the winding tube 5 and to to be free in rotation with respect to the latter once positioned inside.

L'invention porte aussi sur un volet roulant 1 pour fenêtres de toits, vérandas ou similaires, comprenant un tablier 2 incliné ainsi qu'un dispositif d'entraînement 7 selon l'invention.The invention also relates to a shutter 1 for windows of roofs, verandas or the like, comprising an inclined deck 2 and a drive device 7 according to the invention.

Claims (5)

  1. Device for driving (7) an apron (2) of a roller shutter (1), including, on the one hand, a winding-up tube (5), about which said apron (2) is designed capable of winding up in folded position, and an unwinding shaft (8) for controlling the unwinding of this apron (2) and, on the other hand, means for driving in rotation (9) the unwinding shaft (8) as well as transmission means (10), which connect the latter to the winding-up tube (5) and are designed capable of driving the latter according to a varying transmission ratio, said transmission means (10) including a reducing gear (11) designed capable of retransmitting to the winding-up tube (5) a varying speed through means for driving (9) in rotation acting on the unwinding shaft (8), wherein the reducing gear (11) includes an inlet pulley (12), an outlet pulley (13) and at least one intermediate transmission wheel (14) with a relative mobility with respect to said inlet pulley (12) and the outlet pulley (13) thanks to springy restoring means (15), said reducing gear (11) being a planet gear the inlet pulley (12) of which, which has the shape of a crown (16), engages with planetary wheels (17) corresponding to the intermediate transmission wheel (14) engaging onto the outlet pulley (13), said planetary wheels (17) being rotationally mounted on an axially pivoting planetary support (19), to which is fixed one of the ends (20) of a torsion spring (21) forming said springy restoring means (15) and the other end (22) of which is fixed.
  2. Driving device (7) according to claim 1, wherein the fixed end (22) of said torsion spring (21) is made integral with a torque limiter (23).
  3. Driving device (7) according to claim 1 or 2, wherein it includes means (24) designed capable of adjusting the tension of the spring (21).
  4. Driving device (7) according to any of the preceding claims, wherein the transmission means (10) are designed capable of being partially inserted into the winding-up tube (5).
  5. Roller shutter (1) for roof window (3), verandas or the like, including an apron (2) designed capable of being unfolded in a planar position, even a more or less inclined position, wherein it comprises a driving device (7) according to any of the preceding claims.
EP05300753A 2004-09-21 2005-09-16 Device for driving a roller of a roller shutter Active EP1637693B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0452120A FR2875531B1 (en) 2004-09-21 2004-09-21 TRAINING DEVICE FOR ROLLING SHUTTER APRON.

Publications (2)

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EP1637693A1 EP1637693A1 (en) 2006-03-22
EP1637693B1 true EP1637693B1 (en) 2012-04-04

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EP05300753A Active EP1637693B1 (en) 2004-09-21 2005-09-16 Device for driving a roller of a roller shutter

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EP (1) EP1637693B1 (en)
ES (1) ES2384797T3 (en)
FR (1) FR2875531B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021146278A1 (en) * 2020-01-13 2021-07-22 Alpine Overhead Doors, Inc. Planetary gearbox system
TWI789313B (en) * 2022-06-08 2023-01-01 安得富興業有限公司 Small roller blind power assist device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI583858B (en) 2015-01-20 2017-05-21 德侑股份有限公司 Window shade and control system thereof

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US541696A (en) * 1895-06-25 Flexible door
DE19914543A1 (en) * 1999-03-31 2000-10-05 Warema Renkhoff Gmbh & Co Kg Sunshade has winder shaft for sun-blind, drop rod, back-pull drive, compensating system, power transmission, intermediate shaft and driven shafts

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GB2172327B (en) * 1985-03-12 1987-09-09 Bolton Brady Ltd Roller shutter
FR2614928B1 (en) * 1987-05-06 1992-01-10 Bubendorff Richard ROLLER SHUTTER FOR DOOR, WINDOW AND OTHER OPENINGS
CA2038862C (en) * 1991-03-22 1995-10-24 Douglas B. Taylor Compensating mechanism for variable speed roll-up door
FR2710685B1 (en) * 1993-09-29 1995-12-22 Louis Plumer Device for driving and tensioning a flexible protective element, such as a strip, a curtain or an apron.
FR2722183B1 (en) * 1994-07-11 1996-09-13 Zurfluh Feller Sa RELEASABLE CORD WINCH
CZ296837B6 (en) * 1996-10-31 2006-06-14 Vkr Holding A/S Roller blind
FR2765618B1 (en) * 1997-07-02 1999-08-27 Feller Zurfluh CORD WINCH COMPRISING A CLUTCH / DISENGAGING MEMBER FOR MANEUVERING THE APRON HOLDER SHAFT OF A ROLLING SHUTTER

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Publication number Priority date Publication date Assignee Title
US541696A (en) * 1895-06-25 Flexible door
DE19914543A1 (en) * 1999-03-31 2000-10-05 Warema Renkhoff Gmbh & Co Kg Sunshade has winder shaft for sun-blind, drop rod, back-pull drive, compensating system, power transmission, intermediate shaft and driven shafts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021146278A1 (en) * 2020-01-13 2021-07-22 Alpine Overhead Doors, Inc. Planetary gearbox system
TWI789313B (en) * 2022-06-08 2023-01-01 安得富興業有限公司 Small roller blind power assist device

Also Published As

Publication number Publication date
FR2875531A1 (en) 2006-03-24
FR2875531B1 (en) 2006-12-08
ES2384797T3 (en) 2012-07-12
EP1637693A1 (en) 2006-03-22

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