EP1657398B1 - Operating device for a roller shutter - Google Patents

Operating device for a roller shutter Download PDF

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Publication number
EP1657398B1
EP1657398B1 EP20050300881 EP05300881A EP1657398B1 EP 1657398 B1 EP1657398 B1 EP 1657398B1 EP 20050300881 EP20050300881 EP 20050300881 EP 05300881 A EP05300881 A EP 05300881A EP 1657398 B1 EP1657398 B1 EP 1657398B1
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EP
European Patent Office
Prior art keywords
transmission
rotation
operating device
winding
tube
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EP20050300881
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German (de)
French (fr)
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EP1657398A3 (en
EP1657398A2 (en
Inventor
Louis Ferreira
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Bubendorff SA
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Bubendorff SA
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    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68Operating devices or mechanisms, e.g. with electric drive
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures

Definitions

  • 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 position, even flat, in the case of 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 forces resulting from the friction of the latter, in particular at the level of the lateral guidance of the blades in the wings.
  • 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 of its ends to the winding tube, while the opposite end of this torsion spring is integral with a drive shaft connected by transmission means to the winding tube. unwinding axis.
  • the torsion spring can store a compressive force such that, at the time 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, this through a differential allowing to ensure a variable transmission ratio.
  • this variable transmission ratio results from the transformation of a control in rotation both in a rotation and an axially variable displacement of a drive wheel acting on the winding tube.
  • resilient return means contribute to the axial displacement of said output wheel.
  • the input rotation control is provided through an axis in the form of a worm on which is mounted the output wheel defined as a nut integral in rotation of the winding tube while by being movable axially on the axis that defines the worm.
  • the nut that defines the drive wheel and output move axially in one direction or the other, either under the braking effect of the winding tube, resulting in the stressing of elastic return means, or by acceleration of the winding tube resulting from the return of the energy of these elastic return means in the preferred form of a compression spring.
  • the advantages deriving from the present invention consist in that the retransmission, at variable speed, of the drive of the unwinding shaft to the winding tube takes place through a direct mechanical connection without the interposition of a spring knowing that the elastic return means used here do not provide a retransmission of movement, but allow, through the energy they are able to accumulate according to the direction of rotation communicated, to ensure, if necessary , a play catch that can present this transmission mechanism through a differential speed.
  • the present invention is in the field of roller shutters 1, in particular whose apron 2 is provided capable of being deployed in a flat position, or more or less inclined, as is the case of roller shutters for roof windows, verandas or similar 3.
  • the apron 2 of such a shutter 1 is composed of a juxtaposition of blades 4 at least hinged together and capable of being deployed from a winding tube knowing that the slides 6 provide the lateral guidance of the apron 2 to guarantee its deployment at the front of the window 3 or the like.
  • the invention relates more particularly to a device 7 for driving such an apron 2 shutter, this drive device 7 comprising a winding tube 5 around which is designed able to come winding said apron 2 in folded position and an unwinding axis 8 for the deployment command of the latter.
  • Drive means 9, more particularly in the form of an electric motor, are provided for rotating the unwinding shaft 8, while transmission means 10, connecting the unwinding shaft 8 to the winding tube 5 are able to train the latter in a variable transmission ratio.
  • these transmission means 10 comprise an integrated differential device 11 comprising an input shaft 12 on which is mounted in rotation an output drive wheel 13 which is integral in rotation the winding tube 5, means 14 being adapted to allow the transformation of the rotation of the input shaft 12 into a rotation and / or an axial linear displacement of the output drive wheel 13, to allow a differential angular rotation of the input shaft 12 with respect to the output drive wheel 13.
  • This differential speed makes it possible to transmit to the winding tube 5 a variable rotational speed with respect to the driving speed communicated by the means 9 on the unwinding axis 8.
  • a suitable belt transmission or gearing can act on the input shaft 12 of the differential device 11.
  • a pulley 15 around which is wound a belt 16, coming, moreover, to be wound at least around a second pulley 17 fast with rotation of the unwinding axis 8 on which the drive means 9 act.
  • the pulley 17 is not necessarily mounted on the end of the unwinding shaft 8, knowing that it can be directly dependent of said drive means 9.
  • This transmission can be defined by a gear adapted through which it is also possible to obtain a reversal of the direction of rotation between the unwinding shaft 8 and the winding tube 5. This reversal may be necessary depending on the passage of the deck 2 above or below the unwinding axis 8 and / or the winding direction around the winding tube 5.
  • the means 14, allowing through the input shaft 12 to communicate to the output drive wheel 13 a rotation and / or an axial displacement, substantially consist of an input shaft 12 in the form of a screw endless having a helical thread 18 with which is able to cooperate said output drive wheel 13 designed in the form of a nut.
  • this output drive wheel 13 may have, internally to its bore, a tapping or, as illustrated in FIG. figure 2 , sections of ribs 19 designed capable of engaging on the helical thread 18.
  • the device 7, according to the invention further comprises elastic compression biasing means 20 capable of accumulating energy, in particular during the winding control phase of the deck 2, to be able to restore it in phase deployment of said deck 2, or vice versa.
  • elastic return means 20 allow, by repelling in axial translation the output drive wheel 13 on the worm defined by the output shaft 12, to compensate the differential of when at the beginning of deployment, the initial section of the winding tube 5 requires the latter to be driven at a lower angular velocity at the angular velocity communicated to it by the input shaft 12 on which the transmission means 10.
  • the elastic return means 20 are in the form of a compression spring 21 interposed between the output drive wheel 13 and a stop plane 21A.
  • this abutment plane 21A can be located inside the winding tube 5 in which the compression spring 21 and the output drive wheel 13 further extend. illustrated, it can be rotatably mounted within the winding tube 5 while being movable in translation.
  • this winding tube 5 may be formed one or more grooves, or ribs, axial 22 with which one or are able to cooperate one or more ribs, respectively grooves 23, that includes periphery and according to generators, the output drive wheel 13.
  • the output drive wheel 13 and the compression spring 21 take place in a transmission cage 5A, located on one side of a support cheek J and in connection, for a transmission by rotation, with the tube of winding 5.
  • a transmission cage 5A located on one side of a support cheek J and in connection, for a transmission by rotation, with the tube of winding 5.
  • the stop plane 21A with which the compression spring 21 cooperates, the output drive wheel 13 being mounted integrally in rotation and free in translation.
  • this transmission cage 5A may be formed one or more grooves, or ribs, axial with the one or which is able to cooperate one or more ribs, respectively grooves, that includes periphery and generators, the output drive wheel 13.
  • the transmission by belt or gear acts on the input shaft 12 through an epicyclic gear train 39.
  • a sun gear carrier 40 engaged, through planetary gear 41, on the one hand, with a drive ring that defines the pulley 15, and on the other hand, with a drive shaft acting directly or through a torque limiting device 24 on the winding tube 5.
  • a transmission cage 5A in which is mounted, integral in rotation and free in translation, said output drive wheel 13, designed in the form of a nut and cooperating, through at least a helical thread 18, with the input shaft 12 on which this wheel 13 is mounted.
  • the device 7, comprises resilient compression biasing means 20 capable of accumulating energy, in particular during the winding control phase of the deck 2, to be able to restore it in phase. deployment of said deck 2, or vice versa.
  • these elastic return means 20 allow, by repelling in axial translation the output drive wheel 13 on the worm defined by the output shaft 12, to compensate the differential of when at the beginning of deployment, the initial section of the winding tube 5 requires the latter to be driven at a lower angular velocity at the angular velocity communicated to it by the input shaft 12 on which the transmission means 10.
  • the elastic return means 20 are in the form of a compression spring 21 interposed between the output drive wheel 13 and a stop plane 21A formed in the transmission cage 5A.
  • the motor housed in the unwinding tube 8 and to which it communicates a constant speed of rotation, drives the pulley 17 and, through the belt 16, the pulley 15 in form drive crown.
  • This movement is accompanied by the compression of the spring 21 whose energy can be restored during a reverse rotation control deployment.
  • the energy accumulated by the spring 21 allows, in this case, to accelerate the output wheel 13 and thus the speed of rotation of the winding tube 5
  • the transmission means 10 comprise a torque limiter 24 to ensure their disengagement with respect to the winding tube 5 in case of blockage.
  • this torque limiter 24 is interposed between the pulley 15 and the input shaft 12 of the differential device 7.
  • this torque limiter 24 may be in the form of a disk 25 with a toothed face, mounted on the end 26 of the input shaft 12 and designed to cooperate with complementary shaped teeth 27 which is provided on one of its sides, the pulley 15. These teeth, with inclined teeth, are caused to cooperate through the maintenance of the disk 25 against the pulley 15 under the action of resilient return means 28, shown here in the form of a conical spring washer, called belleville.
  • this washer provides resistance to the axial displacement of the disc 25 relative to said pulley 15 which allows the torque limiter 24 declutch disengaging beyond a certain torque resistant.
  • the torque limiter 24 ensures the connection, for a transmission by rotation, between the transmission cage 5A and the winding tube 5.
  • the cage 5A is, again, provided with a disc 25A toothed on one of its faces, which toothing is maintained, under the impulse of resilient return means 28, applied against a complementarily shaped toothing 27A which is provided with a flange 15A integral in rotation with the winding tube 5. More precisely, this flange 15A is mounted fixed in rotation on the shaft section ensuring the maintenance of rotation of said winding tube in the bearing which is provided the support cheek J.
  • means 30 may be designed capable of adjusting the tension of the compression spring 21 in order to put the latter under stress during installation or in the context of after-sales interventions on the shutter 1 .
  • These means have been particularly represented in one exemplary embodiment in the context of the embodiment of the invention corresponding to the figure 4 .
  • they comprise an adjusting screw 32 defined capable of controlling in rotation, directly or indirectly, the winding tube 5 and / or the transmission cage 5A. It is understood that by acting in rotation on any one of these elements, while the transmission means 10 are themselves stationary, the resulting angular velocity differential can be absorbed only when through an axial component displacement of the output drive wheel 13 on the input shaft 12. Depending on the direction of rotation communicated by the adjusting screw, this displacement leads to prestress the spring of compression 21.
  • the adjusting screw 32 acts on a peripheral toothing 33 which the flange 15A integral with the winding tube 5 carries.
  • the disc 25A could be defined in the manner of a crown and carry a toothing with which it would be able to cooperate such a set screw 32.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Description

L'invention concerne un dispositif d'entraînement pour tablier de volet roulant comportant :

  • un tube d'enroulement autour duquel est conçu apte à venir s'enrouler ledit tablier en position repliée ;
  • un axe dérouleur, notamment pour la commande de déplacement dudit tablier ;
  • des moyens, par exemple un moteur, pour l'entraînement en rotation de l'axe dérouleur ;
  • et des moyens de transmission reliant l'axe dérouleur au tube d'enroulement et conçus aptes à entraîner ce dernier selon un rapport de transmission variable.
The invention relates to a drive device for rolling shutter apron comprising:
  • a winding tube around which is designed able to come winding said apron in the folded position;
  • an unwinding axis, in particular for controlling movement of said apron;
  • means, for example a motor, for driving the unwinding axis in rotation;
  • and transmission means connecting the unwinding shaft to the winding tube and designed to drive the latter in 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, dans le cas de 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 position, even flat, in the case of 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 résultant du 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 forces resulting from the friction of the latter, in particular at the level of the lateral guidance of the blades in the wings.

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 dans la direction de déploiement dudit tablier et comporte des moyens d'engrènement ou similaires qui, par action sur les lames du tablier, repoussent ce dernier dans les coulisses de guidage lors de la 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 in the direction of deployment of said deck and comprises meshing means or the like which, by action on the blades the apron, push the latter back into 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 mécanique. Elle nécessite dans tous les cas l'usage d'un ressort de qualité plus onéreux. Cette contrainte appliquée au ressort est nécessairement répercutée sur l'ensemble des pièces mécaniques du volet roulant et génère, là encore, une certaine fatigue mécanique de ces pièces réduisant leur longévité.This solution has the disadvantage of essentially solicit the torsion spring and poses the problem of its mechanical fatigue. It requires in all cases the use of a more expensive quality spring. This stress applied to the spring is necessarily passed on all the mechanical parts of the shutter and generates, again, a certain mechanical 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 contraignante.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 de ses extrémités, 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.Furthermore, a torsion spring is connected at one of its ends to the winding tube, while the opposite end of this torsion spring is integral with a drive shaft connected by transmission means to the winding tube. unwinding axis.

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.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 time of release, the roller shutter, in particular the apron, can be damaged.

Une autre solution, décrite dans DE 3607205A1 , 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 les moyens d'entraînement de l'axe dérouleur ou du tube d'enroulement sont activés, en fonction de la manoeuvre, 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, described in DE 3607205A1 has consisted in equipping both the unwinding shaft and the winding tube with drive means, in particular motorized, having the particularity of being disengageable. In sum, the driving means of the unwinding shaft or of the winding tube are activated, depending on the operation, 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 différentiel permettant d'assurer un rapport de transmission variable.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, this through a differential allowing to ensure a variable transmission ratio.

Tout particulièrement, ce rapport de transmission variable résulte de la transformation d'une commande en rotation à la fois en une rotation et un déplacement variable axial d'une roue d'entraînement agissant sur le tube d'enroulement.In particular, this variable transmission ratio results from the transformation of a control in rotation both in a rotation and an axially variable displacement of a drive wheel acting on the winding tube.

De manière avantageuse, selon le différentiel de vitesse de la roue d'entraînement de sortie agissant sur le tube d'enroulement par rapport à la commande de rotation d'entrée, des moyens de rappel élastiques contribuent au déplacement axial de ladite roue de sortie.Advantageously, according to the speed differential of the output drive wheel acting on the winding tube with respect to the input rotation control, resilient return means contribute to the axial displacement of said output wheel.

Tout particulièrement, la commande de rotation d'entrée est assurée au travers d'un axe sous forme d'une vis sans fin sur laquelle est montée la roue de sortie définie sous forme d'un écrou solidaire en rotation du tube d'enroulement tout en étant mobile axialement sur l'axe que définit la vis sans fin.In particular, the input rotation control is provided through an axis in the form of a worm on which is mounted the output wheel defined as a nut integral in rotation of the winding tube while by being movable axially on the axis that defines the worm.

Ainsi, si en fonction de la section d'enroulement du tablier autour du tube d'enroulement, celui-ci vient à tourner selon une vitesse de rotation supérieure ou inférieure à la vitesse de l'axe correspondant à la vis sans fin, l'écrou que définit la roue d'entraînement et de sortie se déplacent axialement dans une direction ou dans l'autre, soit sous l'effet de freinage du tube d'enroulement, ayant pour conséquence la mise sous contrainte de moyens de rappel élastiques, soit par accélération du tube d'enroulement résultant de la restitution de l'énergie de ces moyens de rappel élastiques sous forme préférentielle d'un ressort de compression.Thus, if depending on the winding section of the apron around the winding tube, it rotates at a speed of rotation greater or less than the speed of the axis corresponding to the worm, the nut that defines the drive wheel and output move axially in one direction or the other, either under the braking effect of the winding tube, resulting in the stressing of elastic return means, or by acceleration of the winding tube resulting from the return of the energy of these elastic return means in the preferred form of a compression spring.

Ainsi, l'invention concerne un dispositif d'entraînement pour tablier de volet roulant comportant :

  • un tube d'enroulement autour duquel est conçu apte à venir s'enrouler ledit tablier en position repliée ;
  • un axe dérouleur, notamment pour la commande de déplacement dudit tablier ;
  • des moyens, par exemple un moteur, pour l'entraînement en rotation de l'axe dérouleur ;
  • et des moyens de transmission reliant l'axe dérouleur au tube d'enroulement et conçus aptes à entraîner ce dernier selon un rapport de transmission variable ;
caractérisé par le fait que ces moyens de transmission comportent un dispositif différentiel intégré comportant un arbre d'entrée sur lequel est montée en rotation une roue d'entraînement de sortie, des moyens étant conçus pour autoriser la transformation de la rotation de l'arbre d'entrée à la fois en une rotation et en un déplacement linéaire axial de la roue d'entraînement de sortie, pour autoriser un différentiel de rotation angulaire de l'arbre d'entrée par rapport à la roue d'entraînement de sortie.Thus, the invention relates to a drive device for rolling shutter apron comprising:
  • a winding tube around which is designed able to come winding said apron in the folded position;
  • an unwinding axis, in particular for controlling movement of said apron;
  • means, for example a motor, for driving the unwinding axis in rotation;
  • and transmission means connecting the unwinding shaft to the winding tube and designed to drive the latter in a variable transmission ratio;
characterized by the fact that these transmission means comprise an integrated differential device comprising an input shaft on which is rotated an output drive wheel, means being adapted to allow the transformation of the rotation of the drive shaft input at both a rotation and a linear axial displacement of the output drive wheel, to allow a differential angular rotation of the input shaft relative to the output drive wheel.

Les avantages découlant de la présente invention consistent en ce que la retransmission, à vitesse variable, de l'entraînement de l'axe dérouleur vers le tube d'enroulement s'effectue au travers d'une liaison mécanique directe sans interposition d'un ressort sachant que les moyens de rappel élastiques employés ici n'assurent pas une retransmission de mouvement, mais permettent, au travers de l'énergie qu'ils sont en mesure d'accumuler selon le sens de rotation communiqué, d'assurer, si besoin est, un rattrapage de jeu que peut présenter cette mécanique de transmission au travers d'un différentiel de vitesse.The advantages deriving from the present invention consist in that the retransmission, at variable speed, of the drive of the unwinding shaft to the winding tube takes place through a direct mechanical connection without the interposition of a spring knowing that the elastic return means used here do not provide a retransmission of movement, but allow, through the energy they are able to accumulate according to the direction of rotation communicated, to ensure, if necessary , a play catch that can present this transmission mechanism through a differential speed.

La présente invention sera mieux comprise à la lecture de la description qui va suivre se rapportant à des exemples de réalisation illustrés dans les dessins joints en annexe.The present invention will be better understood on reading the following description relating to exemplary embodiments illustrated in the accompanying drawings.

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

  • 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 d'un dispositif d'entraînement selon l'invention ;
  • la figure 3 est une représentation en coupe d'un mode de réalisation du dispositif selon l'invention ;
  • la figure 4 est une représentation en coupe d'un autre mode de réalisation du dispositif selon l'invention ; et
  • la figure 5 est une représentation en coupe d'un autre mode encore de réalisation du dispositif selon l'invention.
The understanding of this description will be facilitated with 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 a driving device according to the invention;
  • the figure 3 is a sectional representation of an embodiment of the device according to the invention;
  • the figure 4 is a sectional representation of another embodiment of the device according to the invention; and
  • the figure 5 is a sectional representation of yet another embodiment of the device according to the invention.

La présente invention rentre dans le domaine des volets roulants 1, en particulier dont le tablier 2 est prévu apte à se déployer dans une position plane, voire plus ou moins inclinée, comme c'est le cas des volets roulants pour fenêtres de toit, vérandas ou similaires 3.The present invention is in the field of roller shutters 1, in particular whose apron 2 is provided capable of being deployed in a flat position, or more or less inclined, as is the case of roller shutters for roof windows, verandas or similar 3.

Le tablier 2 d'un tel volet roulant 1 est composé d'une juxtaposition de lames 4 au moins articulées entre elles et susceptibles de se déployer depuis un tube d'enroulement sachant que des coulisses 6 assurent le guidage latéral de ce tablier 2 pour garantir son déploiement au devant de la fenêtre 3 ou analogue.The apron 2 of such a shutter 1 is composed of a juxtaposition of blades 4 at least hinged together and capable of being deployed from a winding tube knowing that the slides 6 provide the lateral guidance of the apron 2 to guarantee its deployment at the 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, ce dispositif d'entraînement 7 comportant 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, this drive device 7 comprising a winding tube 5 around which is designed able to come winding said apron 2 in folded position and an unwinding axis 8 for the deployment command of the latter.

Des moyens d'entraînement 9, plus particulièrement sous forme d'un moteur électrique, sont prévus pour entraîner en rotation l'axe dérouleur 8, tandis que des moyens de transmission 10, reliant l'axe dérouleur 8 au tube d'enroulement 5 sont en mesure d'entraîner ce dernier selon un rapport de transmission variable.Drive means 9, more particularly in the form of an electric motor, are provided for rotating the unwinding shaft 8, while transmission means 10, connecting the unwinding shaft 8 to the winding tube 5 are able to train the latter in a variable transmission ratio.

De manière toute particulière, ces moyens de transmission 10 comportent un dispositif différentiel intégré 11 comportant un arbre d'entrée 12 sur lequel est montée en rotation une roue d'entraînement de sortie 13 dont est solidaire en rotation le tube d'enroulement 5, des moyens 14 étant conçus pour autoriser la transformation de la rotation de l'arbre d'entrée 12 en une rotation et/ou en un déplacement linéaire axial de la roue d'entraînement de sortie 13, pour autoriser un différentiel de rotation angulaire de l'arbre d'entrée 12 par rapport à la roue d'entraînement de sortie 13.In particular, these transmission means 10 comprise an integrated differential device 11 comprising an input shaft 12 on which is mounted in rotation an output drive wheel 13 which is integral in rotation the winding tube 5, means 14 being adapted to allow the transformation of the rotation of the input shaft 12 into a rotation and / or an axial linear displacement of the output drive wheel 13, to allow a differential angular rotation of the input shaft 12 with respect to the output drive wheel 13.

Cette vitesse différentielle permet de transmettre au tube d'enroulement 5 une vitesse de rotation variable par rapport à la vitesse d'entraînement communiquée par les moyens 9 sur l'axe déroulement 8.This differential speed makes it possible to transmit to the winding tube 5 a variable rotational speed with respect to the driving speed communicated by the means 9 on the unwinding axis 8.

A ce propos, sur l'arbre d'entrée 12 du dispositif différentiel 11, peut agir une transmission par courroie ou un engrenage adapté.In this connection, on the input shaft 12 of the differential device 11, a suitable belt transmission or gearing can act.

Ainsi, par exemple, sur l'arbre d'entrée 12 peut être montée une poulie 15 autour de laquelle vient s'enrouler une courroie 16, venant, par ailleurs, s'enrouler au moins autour d'une seconde poulie 17 solidaire en rotation de l'axe dérouleur 8 sur lesquels agissent les moyens d'entraînement 9. On notera, cependant, que la poulie 17 n'est pas nécessairement montée sur l'extrémité de l'axe dérouleur 8, sachant qu'elle peut être directement dépendante desdits moyens d'entraînement 9. Cette transmission peut être définie par un engrenage adapté au travers duquel il est d'ailleurs possible d'obtenir une inversion du sens de rotation entre l'axe dérouleur 8 et le tube d'enroulement 5. Cette inversion peut s'avérer nécessaire en fonction du passage du tablier 2 au-dessus ou en-dessous de l'axe dérouleur 8 et/ou du sens d'enroulement autour du tube d'enroulement 5.Thus, for example, on the input shaft 12 can be mounted a pulley 15 around which is wound a belt 16, coming, moreover, to be wound at least around a second pulley 17 fast with rotation of the unwinding axis 8 on which the drive means 9 act. Note, however, that the pulley 17 is not necessarily mounted on the end of the unwinding shaft 8, knowing that it can be directly dependent of said drive means 9. This transmission can be defined by a gear adapted through which it is also possible to obtain a reversal of the direction of rotation between the unwinding shaft 8 and the winding tube 5. This reversal may be necessary depending on the passage of the deck 2 above or below the unwinding axis 8 and / or the winding direction around the winding tube 5.

Les moyens 14, permettant au travers de l'arbre d'entrée 12 de communiquer à la roue d'entraînement de sortie 13 une rotation et/ou un déplacement axial, consistent substantiellement en un arbre d'entrée 12 sous forme d'une vis sans fin comportant un filet hélicoïdal 18 avec lequel est à même de coopérer ladite roue d'entraînement de sortie 13 conçue sous forme d'un écrou.The means 14, allowing through the input shaft 12 to communicate to the output drive wheel 13 a rotation and / or an axial displacement, substantially consist of an input shaft 12 in the form of a screw endless having a helical thread 18 with which is able to cooperate said output drive wheel 13 designed in the form of a nut.

En d'autres termes, cette roue d'entraînement de sortie 13 peut présenter, intérieurement à son alésage, un taraudage voire, comme illustrés dans la figure 2, des tronçons de nervures 19 conçus aptes à s'engager sur le filet hélicoïdal 18.In other words, this output drive wheel 13 may have, internally to its bore, a tapping or, as illustrated in FIG. figure 2 , sections of ribs 19 designed capable of engaging on the helical thread 18.

Comme cela ressort de la figure 2, lorsqu'il est communiqué à la vis sans fin, que définit l'arbre d'entraînement 12, une rotation au travers de la poulie 15, alors que la roue d'entraînement de sortie 13 est bloquée en rotation, cette dernière se déplace axialement le long de cet arbre d'entrée 12 dans une direction imprimée en fonction du sens du filet hélicoïdal 18. Il en va de même lorsque, pour des sections d'enroulement du tablier 2 autour du tube d'enroulement 5, la roue d'entraînement de sortie 13 ne peut tourner qu'à des vitesses angulaires plus faibles que la vitesse de rotation de l'arbre d'entrée 12.As is apparent from the figure 2 when it is communicated to the worm, which defines the drive shaft 12, a rotation through the pulley 15, while the output drive wheel 13 is locked in rotation, the latter moves axially along this input shaft 12 in a direction printed according to the direction of the helical thread 18. The same applies when, for the winding sections of the apron 2 around the winding tube 5, the wheel of output drive 13 can only rotate at angular speeds lower than the rotational speed of the input shaft 12.

Inversement, lorsque le nombre de spires formées par le tablier 2 autour du tube d'enroulement 5 vient à réduire, en phase de déploiement, cette vitesse de rotation angulaire du tube d'enroulement 5 tend progressivement à croître produisant un déplacement axial de la roue d'entrée de sortie 13 en direction opposée.Conversely, when the number of turns formed by the apron 2 around the winding tube 5 comes to reduce, in the deployment phase, this angular rotation speed of the winding tube 5 tends to gradually grow producing a axial displacement of the output inlet wheel 13 in the opposite direction.

On remarquera toutefois que, si en phase d'enroulement le frein que constitue naturellement le tablier 2, permet d'agir sur la vitesse de rotation angulaire du tube d'enroulement 5, donc de la roue d'entraînement de sortie 13 par rapport à l'arbre d'entrée 12, en phase de déploiement ce dernier a tendance à communiquer à ladite roue d'entraînement de sortie 13 une vitesse de rotation identique. Dans ce cas le tablier 2 peut être amené à se déployer, depuis ce tube d'enroulement 5, plus rapidement que le déploiement commandé au travers de l'arbre dérouleur 8. Pour assurer le freinage de cette vitesse de rotation angulaire du tube d'enroulement 5 et éviter le déploiement incontrôlé du tablier 2, il est prévu des moyens adaptés.It will be noted, however, that if in the winding phase the brake which naturally constitutes the deck 2, makes it possible to act on the angular rotation speed of the winding tube 5, and therefore of the output drive wheel 13 with respect to the input shaft 12, in the deployment phase the latter tends to communicate to said output drive wheel 13 an identical speed of rotation. In this case the deck 2 may be caused to deploy from the winding tube 5 faster than the deployment controlled through the unwinding shaft 8. To ensure the braking of this angular rotation speed of the tube of winding 5 and avoid the uncontrolled deployment of the deck 2, there are provided suitable means.

Précisément, le dispositif 7, selon l'invention, comporte encore des moyens de rappel élastiques de compression 20 susceptibles d'accumuler de l'énergie, en particulier pendant la phase de commande d'enroulement du tablier 2, pour pouvoir la restituer en phase de déploiement dudit tablier 2, ou inversement. Ainsi, au travers de cette énergie accumulée, ces moyens de rappel élastiques 20 permettent, en venant repousser en translation axiale la roue d'entraînement de sortie 13 sur la vis sans fin définie par l'arbre de sortie 12, de compenser le différentiel de vitesse lorsqu'en début de déploiement, la section initiale du tube d'enroulement 5 nécessite l'entraînement de ce dernier à une vitesse angulaire plus faible à la vitesse angulaire qui lui est communiquée par l'arbre d'entrée 12 sur lequel agissent les moyens de transmission 10.Specifically, the device 7, according to the invention, further comprises elastic compression biasing means 20 capable of accumulating energy, in particular during the winding control phase of the deck 2, to be able to restore it in phase deployment of said deck 2, or vice versa. Thus, through this accumulated energy, these elastic return means 20 allow, by repelling in axial translation the output drive wheel 13 on the worm defined by the output shaft 12, to compensate the differential of when at the beginning of deployment, the initial section of the winding tube 5 requires the latter to be driven at a lower angular velocity at the angular velocity communicated to it by the input shaft 12 on which the transmission means 10.

Tout particulièrement, les moyens de rappel élastiques 20 se présentent sous forme d'un ressort de compression 21 s'interposant entre la roue d'entraînement de sortie 13 et un plan butée 21A.In particular, the elastic return means 20 are in the form of a compression spring 21 interposed between the output drive wheel 13 and a stop plane 21A.

A ce propos et comme représenté dans les figures 2 et 3 correspondant à un premier mode de réalisation, ce plan butée 21A peut se situer à l'intérieur du tube d'enroulement 5 dans lequel s'étend, par ailleurs, le ressort de compression 21 et la roue d'entraînement de sortie 13. Comme illustré, celle-ci peut être montée solidaire en rotation à l'intérieur du tube d'enroulement 5 tout en étant mobile en translation. Ainsi, à l'intérieur de ce tube d'enroulement 5, peut être ménagée une ou plusieurs rainures, ou nervures, axiales 22 avec la ou lesquelles est à même de coopérer une ou plusieurs nervures, respectivement rainures 23, que comporte en périphérie et selon des génératrices, la roue d'entraînement de sortie 13.In this respect and as represented in figures 2 and 3 corresponding to a first embodiment, this abutment plane 21A can be located inside the winding tube 5 in which the compression spring 21 and the output drive wheel 13 further extend. illustrated, it can be rotatably mounted within the winding tube 5 while being movable in translation. Thus, inside this winding tube 5, may be formed one or more grooves, or ribs, axial 22 with which one or are able to cooperate one or more ribs, respectively grooves 23, that includes periphery and according to generators, the output drive wheel 13.

Dans le cadre du mode de réalisation correspondant à la figure 4, la roue d'entraînement de sortie 13 et le ressort de compression 21 prennent place dans une cage de transmission 5A, située d'un côté d'une joue support J et en liaison, pour une transmission par rotation, avec le tube d'enroulement 5. La nature de cette liaison est exposée sous forme d'un exemple d'exécution dans la suite de la description. Dans la cage de transmission 5A se trouve le plan butée 21A avec lequel coopère le ressort de compression 21, la roue d'entraînement de sortie 13 y étant montée de manière solidaire en rotation et libre en translation. Ainsi, à l'intérieur de cette cage de transmission 5A peuvent être ménagées une ou plusieurs rainures, ou nervures, axiales avec la ou lesquelles est à même de coopérer une ou plusieurs nervures, respectivement rainures, que comporte en périphérie et selon des génératrices, la roue d'entraînement de sortie 13.In the context of the embodiment corresponding to the figure 4 , the output drive wheel 13 and the compression spring 21 take place in a transmission cage 5A, located on one side of a support cheek J and in connection, for a transmission by rotation, with the tube of winding 5. The nature of this connection is exposed in the form of an exemplary embodiment in the following description. In the transmission housing 5A is the stop plane 21A with which the compression spring 21 cooperates, the output drive wheel 13 being mounted integrally in rotation and free in translation. Thus, inside this transmission cage 5A may be formed one or more grooves, or ribs, axial with the one or which is able to cooperate one or more ribs, respectively grooves, that includes periphery and generators, the output drive wheel 13.

Selon un mode de réalisation avantageux, la transmission par courroie ou engrenage agit sur l'arbre d'entrée 12 au travers d'un train épicycloïdal 39.According to an advantageous embodiment, the transmission by belt or gear acts on the input shaft 12 through an epicyclic gear train 39.

Ainsi, comme visible dans la figure 5, sur l'arbre d'entrée 12 est monté un support de planétaire 40 en prise, au travers de planétaires 41, d'une part, avec une couronne d'entraînement que définit la poulie 15, et, d'autre part, avec un arbre d'entraînement agissant, directement ou au travers d'un dispositif limiteur de couple 24, sur le tube d'enroulement 5.So, as visible in the figure 5 , on the input shaft 12 is mounted a sun gear carrier 40 engaged, through planetary gear 41, on the one hand, with a drive ring that defines the pulley 15, and on the other hand, with a drive shaft acting directly or through a torque limiting device 24 on the winding tube 5.

Celui-ci est équipé d'une cage de transmission 5A dans laquelle est montée, solidaire en rotation et libre en translation, ladite roue d'entraînement de sortie 13, conçue sous forme d'un écrou et coopérant, au travers d'au moins un filet hélicoïdal 18, avec l'arbre d'entrée 12 sur lequel cette roue 13 est montée.It is equipped with a transmission cage 5A in which is mounted, integral in rotation and free in translation, said output drive wheel 13, designed in the form of a nut and cooperating, through at least a helical thread 18, with the input shaft 12 on which this wheel 13 is mounted.

Là encore, le dispositif 7, selon l'invention, comporte des moyens de rappel élastiques de compression 20 susceptibles d'accumuler de l'énergie, en particulier pendant la phase de commande d'enroulement du tablier 2, pour pouvoir la restituer en phase de déploiement dudit tablier 2, ou inversement. Ainsi, au travers de cette énergie accumulée, ces moyens de rappel élastiques 20 permettent, en venant repousser en translation axiale la roue d'entraînement de sortie 13 sur la vis sans fin définie par l'arbre de sortie 12, de compenser le différentiel de vitesse lorsqu'en début de déploiement, la section initiale du tube d'enroulement 5 nécessite l'entraînement de ce dernier à une vitesse angulaire plus faible à la vitesse angulaire qui lui est communiquée par l'arbre d'entrée 12 sur lequel agissent les moyens de transmission 10.Here again, the device 7, according to the invention, comprises resilient compression biasing means 20 capable of accumulating energy, in particular during the winding control phase of the deck 2, to be able to restore it in phase. deployment of said deck 2, or vice versa. Thus, through this accumulated energy, these elastic return means 20 allow, by repelling in axial translation the output drive wheel 13 on the worm defined by the output shaft 12, to compensate the differential of when at the beginning of deployment, the initial section of the winding tube 5 requires the latter to be driven at a lower angular velocity at the angular velocity communicated to it by the input shaft 12 on which the transmission means 10.

Tout particulièrement, les moyens de rappel élastiques 20 se présentent sous forme d'un ressort de compression 21 s'interposant entre la roue d'entraînement de sortie 13 et un plan butée 21A ménagé dans la cage de transmission 5A.In particular, the elastic return means 20 are in the form of a compression spring 21 interposed between the output drive wheel 13 and a stop plane 21A formed in the transmission cage 5A.

Le principe de fonctionnement est le suivant :The operating principle is as follows:

Lors de la commande, par exemple de repliement du tablier 2, le moteur, logé dans le tube dérouleur 8 et auquel il communique une vitesse de rotation constante, entraîne la poulie 17 et, au travers de la courroie 16, la poulie 15 sous forme de couronne d'entraînement.When ordering, for example folding the deck 2, the motor, housed in the unwinding tube 8 and to which it communicates a constant speed of rotation, drives the pulley 17 and, through the belt 16, the pulley 15 in form drive crown.

Grâce à sa denture interne, celle-ci entraîne en rotation les planétaires 41 qui, étant en prise avec la denture d'une roue 43 montée fixe à l'extrémité d'un arbre d'entraînement 42 commandant en rotation le tube d'enroulement 5.Thanks to its internal toothing, it rotates the planetary 41 which, being in engagement with the teeth of a wheel 43 fixedly mounted at the end of a drive shaft 42 rotating the winding tube 5.

Si, pour des raisons de section variable de ce tube d'enroulement 5 (le nombre de spires formées par le tablier autour de ce dernier contribuant à une croissance géométrique de sa section), celui-ci doit tourner à une vitesse variable progressivement plus lente, cela se traduit par un freinage de la rotation de ce tube d'enroulement 5, donc de la cage de transmission 5A. Plus exactement, le différentiel de vitesse, répercuté par l'arbre d'entrée 12 sur le support planétaire 40, conduit à une rotation progressive des planétaires 41 autour de la roue 43 solidaire de l'arbre d'entraînement 42 sous l'impulsion de la couronne correspondant à la poulie 15. Au final, le différentiel de vitesse entre la cage 5A et l'arbre d'entrée 12, conduit, sous l'effet du filet hélicoïdal 18, au déplacement linéaire de la roue de sortie 13.If, for reasons of variable section of this winding tube 5 (the number of turns formed by the apron around the latter contributing to a geometric growth of its section), it must rotate at a variable speed gradually slower this results in a braking of the rotation of this winding tube 5, therefore of the transmission cage 5A. More exactly, the speed differential, echoed by the input shaft 12 on the planetary support 40, leads to a progressive rotation of the planetary gear 41 around the wheel 43 secured to the drive shaft 42 under the influence of the crown corresponding to the pulley 15. Finally, the speed differential between the cage 5A and the input shaft 12, leads, under the effect of the helical thread 18, the linear displacement of the output wheel 13.

Ce déplacement est accompagné par la compression du ressort 21 dont l'énergie pourra être restituée lors d'une commande en rotation inverse de déploiement. En particulier, l'énergie accumulée par le ressort 21 permet, dans ce cas, d'accélérer la roue de sortie 13 et ainsi la vitesse de rotation du tube d'enroulement 5This movement is accompanied by the compression of the spring 21 whose energy can be restored during a reverse rotation control deployment. In particular, the energy accumulated by the spring 21 allows, in this case, to accelerate the output wheel 13 and thus the speed of rotation of the winding tube 5

On remarquera que cette solution de différentiel intégré permet d'entraîner en rotation le tube d'enroulement 5 en sens inverse de celui de l'axe dérouleur 8.It will be noted that this integrated differential solution makes it possible to drive the winding tube 5 in rotation in the opposite direction to that of the unwinding axis 8.

D'ailleurs, ce même résultat peut être obtenu selon l'agencement des poulies et courroies, tout comme 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 le tube d'enroulement 5 tourne dans le même sens que l'axe dérouleur 8 ou inversement.Moreover, this same result can be obtained according to the arrangement of the pulleys and belts, just as 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 or vice versa.

Selon une autre particularité de l'invention, les moyens de transmission 10 comportent un limiteur de couple 24 permettant d'assurer leur débrayage par rapport au tube d'enroulement 5 en cas de blocage.According to another feature of the invention, the transmission means 10 comprise a torque limiter 24 to ensure their disengagement with respect to the winding tube 5 in case of blockage.

Selon un premier mode de réalisation correspondant aux figures 2 et 3, ce limiteur de couple 24 est interposé entre la poulie 15 et l'arbre d'entrée 12 du dispositif différentiel 7.According to a first embodiment corresponding to figures 2 and 3 this torque limiter 24 is interposed between the pulley 15 and the input shaft 12 of the differential device 7.

Tout particulièrement, ce limiteur de couple 24 peut se présenter sous forme d'un disque 25 avec une face dentée, monté sur l'extrémité 26 de l'arbre d'entrée 12 et conçu apte à coopérer avec une denture de forme complémentaire 27 dont est munie, sur un de ses côtés, la poulie 15. Ces dentures, aux dents inclinées, sont amenées à coopérer au travers du maintien en applique du disque 25 contre la poulie 15 sous l'action de moyens de rappel élastiques 28, représentés ici sous forme d'une rondelle ressort conique, dite belleville.In particular, this torque limiter 24 may be in the form of a disk 25 with a toothed face, mounted on the end 26 of the input shaft 12 and designed to cooperate with complementary shaped teeth 27 which is provided on one of its sides, the pulley 15. These teeth, with inclined teeth, are caused to cooperate through the maintenance of the disk 25 against the pulley 15 under the action of resilient return means 28, shown here in the form of a conical spring washer, called belleville.

Ainsi, cette rondelle offre une résistance au déplacement axial de ce disque 25 par rapport à ladite poulie 15 ce qui permet au limiteur de couple 24 le débrayage par désengrènement au-delà d'un certain couple résistant.Thus, this washer provides resistance to the axial displacement of the disc 25 relative to said pulley 15 which allows the torque limiter 24 declutch disengaging beyond a certain torque resistant.

Selon un second mode de réalisation et tel que visible dans la figure 4, le limiteur de couple 24 assure la liaison, pour une transmission par rotation, entre la cage de transmission 5A et le tube d'enroulement 5. La cage 5A est, là encore, munie d'un disque 25A denté sur une de ses faces, laquelle denture est maintenue, sous l'impulsion de moyens de rappel élastique 28, en applique contre une denture de forme complémentaire 27A dont est pourvu un flasque 15A solidaire en rotation du tube d'enroulement 5. Plus exactement, ce flasque 15A est monté fixe en rotation sur le tronçon d'axe assurant le maintien en rotation dudit tube d'enroulement dans le palier dont est pourvu la joue support J.According to a second embodiment and as visible in the figure 4 , the torque limiter 24 ensures the connection, for a transmission by rotation, between the transmission cage 5A and the winding tube 5. The cage 5A is, again, provided with a disc 25A toothed on one of its faces, which toothing is maintained, under the impulse of resilient return means 28, applied against a complementarily shaped toothing 27A which is provided with a flange 15A integral in rotation with the winding tube 5. More precisely, this flange 15A is mounted fixed in rotation on the shaft section ensuring the maintenance of rotation of said winding tube in the bearing which is provided the support cheek J.

Dans un mode de réalisation particulier, des moyens 30 peuvent être conçus aptes à régler la tension du ressort de compression 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.In a particular embodiment, means 30 may be designed capable of adjusting the tension of the compression spring 21 in order to put the latter under stress during installation or in the context of after-sales interventions on the shutter 1 .

Ces moyens ont tout particulièrement été représentés sous un exemple d'exécution dans le cadre du mode de réalisation de l'invention correspondant à la figure 4. Ainsi, ils comportent une vis de réglage 32 définie apte à commander en rotation, directement ou indirectement le tube d'enroulement 5 et/ou la cage de transmission 5A. L'on comprend, en effet, qu'en agissant en rotation sur l'un quelconque de ces éléments, alors que les moyens de transmission 10 sont, eux, maintenus immobiles, le différentiel de vitesse angulaire qui en résulte ne peut être absorbé qu'au travers d'un déplacement à composante axiale de la roue d'entraînement de sortie 13 sur l'arbre d'entrée 12. En fonction du sens de rotation communiqué par la vis de réglage ce déplacement conduit bien à pré-contraindre le ressort de compression 21.These means have been particularly represented in one exemplary embodiment in the context of the embodiment of the invention corresponding to the figure 4 . Thus, they comprise an adjusting screw 32 defined capable of controlling in rotation, directly or indirectly, the winding tube 5 and / or the transmission cage 5A. It is understood that by acting in rotation on any one of these elements, while the transmission means 10 are themselves stationary, the resulting angular velocity differential can be absorbed only when through an axial component displacement of the output drive wheel 13 on the input shaft 12. Depending on the direction of rotation communicated by the adjusting screw, this displacement leads to prestress the spring of compression 21.

Dans l'exemple de la figure 4, la vis de réglage 32 vient agir sur une denture périphérique 33 que porte le flasque 15A solidaire du tube d'enroulement 5. De même, le disque 25A pourrait être défini à la manière d'une couronne et porter une denture avec laquelle serait en mesure de coopérer une telle vis de réglage 32.In the example of the figure 4 , the adjusting screw 32 acts on a peripheral toothing 33 which the flange 15A integral with the winding tube 5 carries. Similarly, the disc 25A could be defined in the manner of a crown and carry a toothing with which it would be able to cooperate such a set screw 32.

Claims (17)

  1. Operating device for an apron (2) of a roller shutter (1), including:
    - a winding-up tube (5), about which said apron (2) is designed capable of winding up into folded position;
    - an unwinding shaft (8), in particular for controlling the unfolding of said apron (2);
    - means (9), for example a motor, for driving the unwinding shaft (8) in rotation;
    - and transmission means (10) connecting the unwinding shaft (8) to the winding-up tube (5) and designed capable of driving the latter according to a varying transmission rate;
    wherein these transmission means (10) include an integrated differential device (11) including an input shaft (12) on which a transmission output wheel (13) is rotationally mounted, which the winding-up tube (5) is made integral in rotation with, means (14) being designed so as to permit to convert the rotation of the input shaft (12) into both a rotation and an axial linear motion of the transmission output wheel (13), in order to permit a differential angular rotation of the input shaft (12) with respect to the transmission output wheel (13).
  2. Operating device according to claim 1, wherein a transmission by means of a belt or a gear acts on the input shaft (12) of the differential device (11).
  3. Operating device according to claim 2, wherein the belt or gear transmission acts on the input shaft (12) through a train of planetary gears (39).
  4. Operating device according to any of he preceding claims, wherein the means (14) are in the form of a worm defined by the input shaft (12), which includes a helical thread (18), which said transmission output wheel (13) in the form of a bolt is designed capable of cooperating with.
  5. Operating device according to claim 4, wherein said transmission output wheel (13) includes a bore with an internal thread, rib lengths (19) or the like designed capable of engaging with the helical thread (18).
  6. Operating device according to any of the preceding claims, wherein the transmission output wheel (13) is mounted integral in rotation, while being movable in translation, in the winding-up tube (5).
  7. Operating device according to any of claims 1 to 5, wherein the transmission output wheel (13) is mounted integral in rotation and freely movable in translation in a transmission cage (5A) in connection, for a transmission through rotation, with the winding-up tube (5).
  8. Operating device according to claim 6 or 7, wherein inside the winding-up tube (5) or the transmission cage (5A) are provided for one or several axial grooves or ribs (22), which one or several ribs or grooves (23) are designed capable of cooperating with, which the transmission output wheel (13) includes at the periphery and according to generating lines.
  9. Operating device according to any of the preceding claims, wherein it includes furthermore springy means for restoring into compression (20) capable of storing energy, in particular during the phase of controlling the winding-up of the apron 2, so that it can be delivered, namely during the phase of unfolding of said apron (2) in the form of a thrust in axial translation of the transmission output wheel (13) onto the worm formed by the output shaft (12), in order to ensure a difference of speed between the winding-up tube (5) and the input shaft (12) on which the transmission means (10) act.
  10. Operating device according to claim 9, wherein the springy restoring means (20) are in the form of a compression spring (21) intercalated between the transmission output wheel (13) and a stop plane (21A).
  11. Operating device according to any of the preceding claims, wherein the transmission means (10) include a torque limiter (24) for ensuring their declutching with respect to the winding-up tube (5).
  12. Operating device according to claim 11, wherein the torque limiter (24) is intercalated between a pulley (15) and the input shaft (12) of the integrated differential device (11).
  13. Operating device according to claim 12, wherein the torque limiter (24) is in the form of a disc (25) with a toothed side, mounted at the end (26) of the input shaft (12) and designed capable of cooperating with a complementarily shaped toothing (27), which the pulley (15) is provided with on one of its sides, these toothings, with inclined teeth, being brought into cooperation through maintaining the disc (25) applied against the pulley (15) under the action of springy restoring means (28).
  14. Operating device according to claims 7 and 11, wherein the torque limiter (24) ensures the connection, for a transmission through rotation, between the transmission cage (5A) and the winding-up tube (5).
  15. Operating device according to claim 14, wherein said torque limiter (24) is in the form of a disc (25A) toothed on one of its sides and which the transmission cage (5A) is provided with, the toothing of this disc (25A) being maintained, under the action of springy restoring means (28), applied against a complementary toothing (27A), which a side flange (15A) integral in rotation with the winding-up tube (5) is provided with.
  16. Operating device according to claim 9 or 10, wherein it includes means (30) for adjusting the tension of the springy restoring means (20).
  17. Operating device according to claim 3, wherein on said input shaft (12) is mounted a side gear support (40) engaging, through side gears (41), on the one hand, with a driving crown defined by the pulley (15) and, on the other hand, with a driving shaft (42), which acts, directly or through a torque limiting device (24), on said winding-up tube (5), which is provided with a transmission cage (5A) in which is mounted integral in rotation and freely movable in translation said transmission output wheel (13) in the form of a nut and cooperating, through at least one helical thread (18), with said input shaft (12) on which said wheel (13) is mounted.
EP20050300881 2004-11-15 2005-10-31 Operating device for a roller shutter Active EP1657398B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0452624A FR2877986B1 (en) 2004-11-15 2004-11-15 TRAINING DEVICE FOR A SHUTTER APRON

Publications (3)

Publication Number Publication Date
EP1657398A2 EP1657398A2 (en) 2006-05-17
EP1657398A3 EP1657398A3 (en) 2008-03-05
EP1657398B1 true EP1657398B1 (en) 2011-06-22

Family

ID=34950683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050300881 Active EP1657398B1 (en) 2004-11-15 2005-10-31 Operating device for a roller shutter

Country Status (3)

Country Link
EP (1) EP1657398B1 (en)
ES (1) ES2367993T3 (en)
FR (1) FR2877986B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105484652B (en) * 2016-01-20 2017-06-30 无锡林特门业科技有限公司 Soft curtain anticollision slide fastener rapid door
CN105804621B (en) * 2016-05-10 2018-01-30 许昌兴安金融设备有限公司 A kind of bank's Special anti-theft rolling screen door

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US541696A (en) * 1895-06-25 Flexible door
DE2303782A1 (en) * 1973-02-26 1974-08-01 Guenter Kindervater ROLLER BLIND WITH UP AND UNWINDING CURTAIN
DE3607205A1 (en) * 1985-03-08 1986-09-11 Albert Dipl.-Ing. Zieher (FH), 7950 Biberach Window roller blind
GB2172327B (en) * 1985-03-12 1987-09-09 Bolton Brady Ltd Roller shutter
FR2755176A1 (en) * 1996-10-31 1998-04-30 Libardi Serge Electrically-operated roller blind
FR2777941B1 (en) * 1998-04-23 2000-06-02 Bubendorff Sa MANUAL DRIVE DEVICE FOR ROLLING SHUTTER

Also Published As

Publication number Publication date
FR2877986B1 (en) 2007-02-16
EP1657398A3 (en) 2008-03-05
FR2877986A1 (en) 2006-05-19
EP1657398A2 (en) 2006-05-17
ES2367993T3 (en) 2011-11-11

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