EP0947661B1 - One-way locking device for roller shutter - Google Patents

One-way locking device for roller shutter Download PDF

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Publication number
EP0947661B1
EP0947661B1 EP19990440064 EP99440064A EP0947661B1 EP 0947661 B1 EP0947661 B1 EP 0947661B1 EP 19990440064 EP19990440064 EP 19990440064 EP 99440064 A EP99440064 A EP 99440064A EP 0947661 B1 EP0947661 B1 EP 0947661B1
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EP
European Patent Office
Prior art keywords
disc
shaft
locking device
brake
movable
Prior art date
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Expired - Lifetime
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EP19990440064
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German (de)
French (fr)
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EP0947661A1 (en
Inventor
Gérard Evreux
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Bubendorff Volet Roulant SA
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Bubendorff Volet Roulant 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
    • E06B9/78Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor for direct manual operation, e.g. by tassels, by handles
    • 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

Definitions

  • the invention relates to a unidirectional locking device interposed between a drive mechanism, in particular of the type manual, and a winding shaft of a shutter curtain rolling.
  • the present invention will find particular interest in the field of drive systems for roller shutters.
  • a rolling shutter is defined by an apron coming to wrap around and unwind from a tree winding controlled in rotation by a mechanism appropriate training. So this winding tree, usually placed inside a box is maintained, in rotation, at its ends, through bearings often associated with supporting cheeks.
  • drive mechanism itself, it can be of the type manual or motor.
  • a strap As part of a strap, the latter, if it comes to wrap, at its upper end, around said aforementioned drive pulley, at its lower end, it joins a kind of reel reel equipped with a system strap braking.
  • substantially such a one-way locking device is in the form of a constrained helical spring around or in a fixed tube for example made integral, directly or indirectly, from a supporting cheek.
  • this coil spring On both ends of this coil spring is able to act a part of transmission connecting, in a way, the mechanism drive to the roller shutter winding shaft. So, only voluntary action on this drive mechanism, for example, on the pulley that composes it, leads to relax this spring with respect to the fixed tube around which or in which it is forced and, through this, to release rotation of the aforementioned transmission part, therefore, to authorize the rotation of this winding shaft.
  • a couple exerted, for example, by the weight of the deck on this tree is counteracted by the action of the spring with respect to said tube fixed.
  • a winding device for a curtain or the like comprising a winding shaft on which it is wound and from which unfolds such a curtain under the impulse of a manual control exerted on a drive mechanism of the chain wheel type.
  • a locking device which consists, at said winding shaft, of a wheel plane immobilized inside the latter and equipped with a first set of plates perpendicular to the axis of the tree winding.
  • This flat wheel is mounted, in rotation and in sliding, on a fixed shaft with one end receives, in rotation, said chain wheel while the other end is equipped with elastic return means suitable for lean on said flat wheel.
  • This blocking device also comprises, at said fixed shaft, a second set of plates mounted, perpendicularly, on said shaft fixed, between the two ends of the latter.
  • Each of plates of this second set is arranged between two plates of the first game equipping said flat wheel.
  • This last has, on the periphery, a sawtooth crown capable of cooperate with a crown of complementary shape fitted to the chain wheel which, when activated, repels said flat wheel, against the action of elastic return means. This authorizes the detachment of the plates equipping said wheel plane of those secured to the fixed shaft.
  • the elastic return means push said flat wheel towards the chain wheel which causes the clutch of the two sets of plates.
  • this device has a complex design involving a large number of parts including the in place and adjustment are tedious. This is, in particular, thus for the plates of the braking device which must, moreover, respect a determined spacing between them in order to authorize their detachment while avoiding remaining engaged.
  • the meshing means equipping the chain wheel act on a heavy and bulky set made up, in particular, by the flat wheel and the winding shaft receiving the curtain or the like. Also, the fact of ensuring the displacement, in rotation and, above all, in translation, of this set is inevitably results in rapid and significant wear of the means of engagement.
  • moving said tree drive in the axial direction has the effect of deporting laterally the curtain which is detrimental to the scrolling of the latter, particularly if the latter were to be guided in side slides.
  • the present invention aims to provide a solution to the problem posed through a blocking device unidirectional very simple design, at least avoiding compliance with very strict manufacturing tolerances. This not only results in lower manufacturing costs, but also a reduction in a possible risk of failure of such a unidirectional locking device.
  • the invention relates to a blocking device unidirectional interposed between a drive mechanism, in particular of the manual type, and a winding shaft of a roller shutter curtain, said device being constituted, on the one hand, by a brake comprising a fixed plate associated with a fixed part of the roller shutter, against this fixed plate being pushed back, by elastic return means, a plate mobile integral in rotation with said winding shaft and, on the other hand, by means of engagement of the mechanism drive on said movable platform provided suitable, under the momentum of a torque imparted by said mechanism training, to exercise, on this movable platform, at least one torque and an axial component force to ensure the detachment of said movable plate relative to the fixed plate, against the action of elastic return means, characterized by the fact that, on the one hand, the movable plate is mounted movable axially on the winding shaft and has a nozzle slidably fitted axially, at one end of the shaft winding, between the latter and this tip intervening means for locking in rotation
  • the quality of the blocking of the deck winding shaft depends mainly on the braking coefficient provided by the fittings fitted to the brake pads.
  • the present invention relates to the field of roller shutters.
  • a such rolling shutter 1 comprising an apron 2 defined by a juxtaposition of blades 3, this deck 2 being provided capable of coming wrap around a winding shaft 4 plus particularly illustrated in Figures 2 and 3, taking position inside a housing 5 accommodating, for elsewhere, the drive mechanism 6 of this roller shutter 1.
  • winding shaft 4 is mounted in rotation, at level of its ends 7, in bearings 8 associated with support cheeks 9 integrated into the box 5.
  • this drive mechanism 6 is defined, in this case and as an example, by a pulley 10 around which is caused to wind, at least partially, a traction member 11 such as a strap, a chain, a cord or the like.
  • a traction member 11 such as a strap, a chain, a cord or the like.
  • This roller shutter 1, according to the invention, is provided, in in addition, a unidirectional locking device 13 interposed between the drive mechanism 6, here in the form of a pulley 10, and the winding shaft 4.
  • This unidirectional locking device 13 has the function ensuring the immobility in rotation of said winding shaft 4 spurred on by a couple directly imprinted on this last, for example, by the weight of the deck 2.
  • such a unidirectional locking device 13 is defined capable of authorizing the rotation control of this winding shaft 4 through the drive mechanism 6.
  • this unidirectional locking device 13 is characterized in that it consists, on the one hand, of a brake 14 comprising a fixed plate 15 against which is pushed back, by elastic return means 16, a plate 17 which itself is mounted movable, axially while being integral in rotation, on the winding shaft 4.
  • such a movable tray 17 is preferably mounted on this winding shaft 4 at one of the ends 7 of the latter.
  • this movable plate 17 has a nozzle 18 provided capable of being fitted, so sliding axially, in this end 7 of the shaft winding 4, usually of tubular type.
  • the winding shaft 4 can be lined, internally, at using a sleeve 19 adjusted to the nozzle 18. Between the latter and, as the case may be, said sleeve 19 or else the shaft winding 4 are then arranged locking means in rotation 20 of the key type, groove and tongue or the like.
  • This movable plate 17 is further defined by a flange annular 21 receiving a brake lining 22 facing with the fixed plate 15 which can itself be provided with a such brake lining 23.
  • this fixed plate 15 that it is necessarily associated with a fixed part of the roller shutter 1.
  • a fixed plate 15 is defined, substantially, by a support cheek 9 against which is then able to be pushed back the movable plate 17 under the impulse of said elastic return means 16.
  • this brake 14 of the blocking device unidirectional 13 can take position inside the bearing 8 ensuring the rotation of the winding shaft 4.
  • this bearing 8 is, in this case, defined in the form of a ferrule 24 integral with said support cheek 9 and extending in direction of the winding shaft 4.
  • This ferrule 24 is provided at its free end 25 with an annular bearing 26 defining the bearing 8 proper and coming to cooperate with a cylindrical seat 27, either directly associated with the shaft winding 4, or to the movable plate 17 of the brake 14.
  • the ferrule 24 associated with the support cheek 9 delimits a housing 28 provided to accommodate the brake 14.
  • elastic return means 16 they are, here, interposed between the annular surface 26 and the corresponding annular flange 21 to the movable plate 17.
  • the unidirectional locking device 13 consists, on the other hand, by engagement means 29 of the mechanism 6 on the movable plate 17 which are provided capable, under the impulse of a torque impressed by said mechanism drive 6, to exercise, on this movable plate 17, at least a torque and a force f with an axial component to ensure the detachment of said movable plate 17 relative to the fixed plate 15, against the action of the elastic return means 16.
  • these means meshing 29 consist of a first associated disc 30 to said movable plate 17 of the brake 14 and into a second disc 31 integral, in rotation and in translation, with a shaft 32 of the drive mechanism 6.
  • This first and this second disc 30, 31 come to mesh with each other at the means of teeth 33, drive fingers, pins or analogues whose profile 34 is defined capable of meeting the aforementioned condition.
  • this race 35 corresponds to the persistent play between the end edge of the winding shaft 4 and a shoulder 36 defined, in correspondence, at the level of the external part of the end piece 18 corresponding to the movable plate 17.
  • the disc 31, integral with a drive shaft 32 of the drive mechanism 6, is necessarily maintained fixed in translation, at least in the direction corresponding to race 35, so that you can control it.
  • the present invention makes it possible to advantageously respond to the problem posed insofar as it relates to a device unidirectional locking mechanism both simple and safe operation.

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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 a trait à un dispositif de blocage unidirectionnel interposé entre un mécanisme d'entraínement, notamment de type manuel, et un arbre d'enroulement d'un tablier de volet roulant.The invention relates to a unidirectional locking device interposed between a drive mechanism, in particular of the type manual, and a winding shaft of a shutter curtain rolling.

La présente invention trouvera un intérêt tout particulier dans le domaine des systèmes d'entraínement pour volets roulants.The present invention will find particular interest in the field of drive systems for roller shutters.

De manière générale, un volet roulant est défini par un tablier venant s'enrouler autour et se dérouler depuis un arbre d'enroulement commandé en rotation par un mécanisme d'entraínement approprié. Ainsi, cet arbre d'enroulement, habituellement disposé à l'intérieur d'un caisson est maintenu, en rotation, au niveau de ses extrémités, par l'intermédiaire de paliers souvent associés à des joues supports. Quant au mécanisme d'entraínement proprement dit, il peut être du type manuel ou à moteur.Generally, a rolling shutter is defined by an apron coming to wrap around and unwind from a tree winding controlled in rotation by a mechanism appropriate training. So this winding tree, usually placed inside a box is maintained, in rotation, at its ends, through bearings often associated with supporting cheeks. As to drive mechanism itself, it can be of the type manual or motor.

Quoi qu'il en soit, il se pose le problème de l'immobilisation en rotation de cet arbre d'enroulement lorsque cesse l'action, sur ce dernier, dudit mécanisme d'entraínement. Si ce problème est actuellement résolu par l'utilisation d'un frein de type électromagnétique dans le cas d'un mécanisme d'entraínement à moteur, frein fonctionnant par manque de courant, il n'en va pas de même dans le cadre d'un mécanisme d'entraínement de type manuel.Anyway, there is the problem of immobilization in rotation of this winding shaft when the action ceases, on the latter, said drive mechanism. If this problem is currently resolved by the use of a type brake electromagnetic in the case of a drive mechanism to motor, brake operating due to lack of current, it does not go not the same in the context of a type of drive mechanism manual.

A ce propos, l'on observera, en effet, que, parmi ces mécanismes d'entraínement de type manuel, il en existe de configuration particulièrement simplifiée, puisque définis, par exemple, par une simple poulie montée, directement ou par l'intermédiaire d'un réducteur approprié, sur l'axe dudit arbre d'enroulement. Sur cette poulie vient alors s'enrouler, au moins partiellement, un organe de traction, du type sangle, cordelette, chaíne ou analogue. Si l'on prend le cas plus particulier d'une cordelette ou d'une chaíne, l'on remarquera que cette immobilisation en rotation de l'arbre d'enroulement résulte, en réalité, de l'immobilisation en translation de l'un au moins des brins décrits par ladite cordelette ou ladite chaíne.In this regard, it will be observed, in fact, that among these manual type drive mechanisms, there are particularly simplified configuration, since defined by example, by a simple pulley mounted, directly or by through an appropriate reducer, on the axis of said shaft winding. On this pulley then comes to wind, at less partially, a traction member, of the strap type, cord, chain or the like. If we take the case more particular of a cord or chain, we will notice that this immobilization in rotation of the winding shaft actually results from the immobilization in translation of one at least strands described by said cord or said chain.

Par ailleurs, dans le cadre d'une sangle, celle-ci, si elle vient s'enrouler, à son extrémité supérieure, autour de ladite poulie d'entraínement précitée, à son extrémité inférieure, elle rejoint une sorte de bobine dévidoir équipée d'un système de freinage de la sangle.Furthermore, as part of a strap, the latter, if it comes to wrap, at its upper end, around said aforementioned drive pulley, at its lower end, it joins a kind of reel reel equipped with a system strap braking.

En dehors de ces solutions, finalement très primaires, il existe, d'ores et déjà, des dispositifs de blocage unidirectionnels interposés entre un tel mécanisme d'entraínement, par exemple sous forme d'une poulie, et l'arbre d'enroulement d'un tablier de volet roulant. Un tel dispositif de blocage est à même, comme l'indique sa dénomination, d'empêcher la rotation de l'arbre d'enroulement sous l'impulsion du poids du tablier et, donc, d'un couple directement imprimé à cet arbre d'enroulement. Par ailleurs, il est prévu apte à être désactivé, automatiquement, en cas d'action volontaire exercée par l'usager, par l'intermédiaire d'une cordelette, d'une sangle, d'une chaíne ou autre, sur ladite poulie.Apart from these solutions, which are ultimately very primary, there blocking devices already exist unidirectional interposed between such a mechanism drive, for example in the form of a pulley, and the shaft for rolling up a roller shutter curtain. Such a device blocking is even, as indicated by its name, prevent rotation of the winding shaft under the impulse of the weight of the deck and, therefore, of a couple directly printed on this winding shaft. Besides, it is designed to be deactivated, automatically, in case voluntary action exercised by the user, through a cord, a strap, a chain or other, on said pulley.

substantiellement, un tel dispositif de blocage unidirectionnel se présente sous la forme d'un ressort hélicoïdal contraint autour ou dans un tube fixe par exemple rendu solidaire, directement ou indirectement, d'une joue support. Sur les deux extrémités de ce ressort hélicoïdal est à même d'agir une pièce de transmission reliant, en quelque sorte, le mécanisme d'entraínement à l'arbre d'enroulement du volet roulant. Ainsi, seule une action volontaire sur ce mécanisme d'entraínement, par exemple, sur la poulie qui le compose, conduit à détendre ce ressort par rapport au tube fixe autour duquel ou dans lequel il est contraint et, par ce biais, à libérer la rotation de la pièce de transmission précitée, donc, à autoriser la rotation de cet arbre d'enroulement. Contrairement, un couple exercé, par exemple, par le poids du tablier sur cet arbre est contrecarré par l'action du ressort par rapport audit tube fixe.substantially such a one-way locking device is in the form of a constrained helical spring around or in a fixed tube for example made integral, directly or indirectly, from a supporting cheek. On both ends of this coil spring is able to act a part of transmission connecting, in a way, the mechanism drive to the roller shutter winding shaft. So, only voluntary action on this drive mechanism, for example, on the pulley that composes it, leads to relax this spring with respect to the fixed tube around which or in which it is forced and, through this, to release rotation of the aforementioned transmission part, therefore, to authorize the rotation of this winding shaft. Unlike, a couple exerted, for example, by the weight of the deck on this tree is counteracted by the action of the spring with respect to said tube fixed.

On se reportera, plus particulièrement, au document FR-A-2.749.361 ou encore au document DE-35 04 489 pour de plus amples détails, concernant de tels dispositifs de blocage unidirectionnels connus sous forme d'un ressort.We will refer, more particularly, to document FR-A-2,749,361 or to document DE-35 04 489 for more further details regarding such blocking devices unidirectional known as a spring.

En fait, il faut bien reconnaítre que, si ces derniers sont d'un fonctionnement simple, ils n'en restent pas moins complexes dans leur conception. En effet, les différentes pièces doivent être ajustées les unes par rapport aux autres de telle manière que la précontrainte, imprimée au ressort et d'où résulte le blocage en rotation de l'arbre d'enroulement, soit suffisante pour lui permettre de remplir la fonction requise, sachant qu'elle ne doit pas, pour autant, gêner le bon fonctionnement du mécanisme d'entraínement et, par conséquent, rendre plus difficile la manoeuvre au niveau de l'organe de traction sous forme de chaíne, cordelette ou analogue.In fact, it must be recognized that, if these are simple operation, they are nonetheless complex in their design. Indeed, the different parts should be adjusted to each other from in such a way that the prestress, printed on the spring and from where results in the rotation blocking of the winding shaft, i.e. sufficient to enable it to perform the required function, knowing that it should not, however, hinder the good operation of the drive mechanism and, therefore, make it more difficult to maneuver at the level of the traction in the form of a chain, cord or the like.

L'on connaít, encore, au travers du document américain US-5.488.983, un dispositif d'enroulement pour rideau ou analogue comportant un arbre d'enroulement sur lequel s'enroule et à partir duquel se déroule un tel rideau sous l'impulsion d'une commande manuelle exercée sur un mécanisme d'entraínement du type roue à chaíne. Entre ce dispositif d'entraínement et ledit arbre d'enroulement est interposé un dispositif de blocage qui consiste, au niveau dudit arbre d'enroulement, en une roue plane immobilisée à l'intérieur de ce dernier et équipée d'un premier jeu de plaques perpendiculaires à l'axe de l'arbre d'enroulement. Cette roue plane est montée, en rotation et en coulissement, sur un arbre fixe dont l'une des extrémités reçoit, en rotation, ladite roue à chaíne tandis que l'autre extrémité est équipée de moyens de rappel élastiques aptes à prendre appui sur ladite roue plane. Ce dispositif de blocage comporte, encore, au niveau dudit arbre fixe, un second jeu de plaques montées, de manière perpendiculaire, sur ledit arbre fixe, entre les deux extrémités de ce dernier. Chacune des plaques de ce deuxième jeu est disposée entre deux plaques du premier jeu équipant ladite roue plane. Cette dernière présente, en périphérie, une couronne en dents de scie apte à coopérer avec une couronne de forme complémentaire équipant la roue à chaíne qui, lors de son actionnement, repousse ladite roue plane, contre l'action des moyens de rappel élastiques. Ceci autorise le décollement des plaques équipant ladite roue plane de celles solidaires de l'arbre fixe. Lorsque l'action sur la roue à chaíne cesse, les moyens de rappel élastiques repoussent ladite roue plane en direction de la roue à chaíne ce qui entraíne l'embrayage des deux jeux de plaques.We still know, through the American document US-5,488,983, a winding device for a curtain or the like comprising a winding shaft on which it is wound and from which unfolds such a curtain under the impulse of a manual control exerted on a drive mechanism of the chain wheel type. Between this training device and said winding shaft is interposed a locking device which consists, at said winding shaft, of a wheel plane immobilized inside the latter and equipped with a first set of plates perpendicular to the axis of the tree winding. This flat wheel is mounted, in rotation and in sliding, on a fixed shaft with one end receives, in rotation, said chain wheel while the other end is equipped with elastic return means suitable for lean on said flat wheel. This blocking device also comprises, at said fixed shaft, a second set of plates mounted, perpendicularly, on said shaft fixed, between the two ends of the latter. Each of plates of this second set is arranged between two plates of the first game equipping said flat wheel. This last has, on the periphery, a sawtooth crown capable of cooperate with a crown of complementary shape fitted to the chain wheel which, when activated, repels said flat wheel, against the action of elastic return means. This authorizes the detachment of the plates equipping said wheel plane of those secured to the fixed shaft. When the action on the chain wheel stops, the elastic return means push said flat wheel towards the chain wheel which causes the clutch of the two sets of plates.

On observera que ce dispositif présente une conception complexe faisant intervenir un nombre important de pièces dont la mise en place et le réglage sont fastidieux. Il en est, notamment, ainsi pour les plaques du dispositif de freinage qui doivent, de plus, respecter un espacement déterminé entre elles afin d'autoriser leur décollement en évitant de rester embrayées. De plus, les moyens d'engrènement équipant la roue à chaíne agissent sur un ensemble lourd et encombrant constitué, notamment, par la roue plane et l'arbre d'enroulement recevant le rideau ou analogue. Aussi, le fait d'assurer le déplacement, en rotation et, surtout, en translation, de cet ensemble se traduit, inévitablement, par une usure rapide et importante des moyens d'engrènement. En outre, le fait de déplacer ledit arbre d'entraínement dans le sens axial a pour effet de déporter latéralement le rideau ce qui est préjudiciable au défilement de ce dernier, notamment si celui-ci devait être guidé dans des coulisses latérales.It will be observed that this device has a complex design involving a large number of parts including the in place and adjustment are tedious. This is, in particular, thus for the plates of the braking device which must, moreover, respect a determined spacing between them in order to authorize their detachment while avoiding remaining engaged. Of more, the meshing means equipping the chain wheel act on a heavy and bulky set made up, in particular, by the flat wheel and the winding shaft receiving the curtain or the like. Also, the fact of ensuring the displacement, in rotation and, above all, in translation, of this set is inevitably results in rapid and significant wear of the means of engagement. In addition, moving said tree drive in the axial direction has the effect of deporting laterally the curtain which is detrimental to the scrolling of the latter, particularly if the latter were to be guided in side slides.

Aussi, la présente invention a pour but d'apporter une solution au problème posé au travers d'un dispositif de blocage unidirectionnel de conception très simple, tout du moins évitant le respect de tolérances de fabrication très strictes. Il en résulte, non seulement, un coût de fabrication moindre, mais aussi une diminution d'un éventuel risque de défaillance d'un tel dispositif de blocage unidirectionnel.Also, the present invention aims to provide a solution to the problem posed through a blocking device unidirectional very simple design, at least avoiding compliance with very strict manufacturing tolerances. This not only results in lower manufacturing costs, but also a reduction in a possible risk of failure of such a unidirectional locking device.

A cet effet, l'invention concerne un dispositif de blocage unidirectionnel interposé entre un mécanisme d'entraínement, notamment de type manuel, et un arbre d'enroulement d'un tablier de volet roulant, ledit dispositif étant constitué, d'une part, par un frein comprenant un plateau fixe associé à une partie fixe du volet roulant, contre ce plateau fixe étant repoussé, par des moyens de rappel élastiques, un plateau mobile solidaire en rotation dudit arbre d'enroulement et, d'autre part, par des moyens d'engrènement du mécanisme d'entraínement sur ledit plateau mobile prévus aptes, sous l'impulsion d'un couple imprimé par ledit mécanisme d'entraínement, à exercer, sur ce plateau mobile, au moins un couple et une force à composante axiale pour assurer le décollement dudit plateau mobile par rapport au plateau fixe, contre l'action des moyens de rappel élastiques, caractérisé par le fait que, d'une part, le plateau mobile est monté mobile axialement sur l'arbre d'enroulement et comporte un embout prévu à même d'être emmanché, de manière coulissante axialement, au niveau de l'une des extrémités de l'arbre d'enroulement, entre ce dernier et cet embout intervenant des moyens de blocage en rotation du type clavette, rainure et languette ou analogue et, d'autre part, ledit plateau fixe est défini, plus particulièrement, par une joue support munie d'un palier apte à recevoir, en rotation, l'une des extrémités de l'arbre d'enroulement.To this end, the invention relates to a blocking device unidirectional interposed between a drive mechanism, in particular of the manual type, and a winding shaft of a roller shutter curtain, said device being constituted, on the one hand, by a brake comprising a fixed plate associated with a fixed part of the roller shutter, against this fixed plate being pushed back, by elastic return means, a plate mobile integral in rotation with said winding shaft and, on the other hand, by means of engagement of the mechanism drive on said movable platform provided suitable, under the momentum of a torque imparted by said mechanism training, to exercise, on this movable platform, at least one torque and an axial component force to ensure the detachment of said movable plate relative to the fixed plate, against the action of elastic return means, characterized by the fact that, on the one hand, the movable plate is mounted movable axially on the winding shaft and has a nozzle slidably fitted axially, at one end of the shaft winding, between the latter and this tip intervening means for locking in rotation of the key type, groove and tongue or the like and, on the other hand, said fixed plate is defined, more particularly, by a support cheek provided with a bearing capable of receiving, in rotation, one of the ends of the winding shaft.

En fait, au travers d'un tel dispositif de blocage unidirectionnel conforme à l'invention, la qualité du blocage de l'arbre d'enroulement du tablier dépend essentiellement du coefficient de freinage procuré par les garnitures équipant les plateaux du frein.In fact, through such a blocking device unidirectional according to the invention, the quality of the blocking of the deck winding shaft depends mainly on the braking coefficient provided by the fittings fitted to the brake pads.

Par conséquent, il est bien plus facile d'ajuster les différents éléments les uns par rapport aux autres en comparaison avec la solution connue.Therefore, it is much easier to adjust the different elements relative to each other in comparison with the known solution.

La présente invention sera mieux comprise à la lecture de la description qui va suivre se rapportant au dessin joint en annexe et dans lequel :

  • la figure 1 est une représentation schématisée d'un volet roulant auquel s'applique le dispositif de blocage unidirectionnel conforme à l'invention ;
  • la figure 2 est une représentation schématisée, partielle et en coupe de ce volet roulant illustrant, plus particulièrement, ce dispositif de blocage unidirectionnel lorsque celui-ci est en position active ;
  • la figure 3 est une représentation similaire à la figure 2, le dispositif de blocage unidirectionnel étant représenté, dans ce cas, en position désactivée autorisant la rotation de l'arbre d'enroulement sous l'impulsion du mécanisme d'entraínement.
The present invention will be better understood on reading the description which follows relating to the attached drawing in which:
  • Figure 1 is a schematic representation of a roller shutter to which the unidirectional locking device according to the invention applies;
  • Figure 2 is a schematic representation, partial and in section of this roller shutter illustrating, more particularly, this unidirectional locking device when the latter is in the active position;
  • Figure 3 is a representation similar to Figure 2, the unidirectional locking device being shown, in this case, in the deactivated position allowing rotation of the winding shaft under the impulse of the drive mechanism.

Tel que représenté dans la figure 1 du dessin ci-joint, la présente invention est relative au domaine des volets roulants. As shown in Figure 1 of the attached drawing, the the present invention relates to the field of roller shutters.

Ainsi, il a été représenté dans le cadre de cette figure 1, un tel volet roulant 1 comportant un tablier 2 défini par une juxtaposition de lames 3, ce tablier 2 étant prévu apte à venir s'enrouler autour d'un arbre d'enroulement 4, plus particulièrement illustré dans les figures 2 et 3, prenant position à l'intérieur d'un caisson 5 accueillant, par ailleurs, le mécanisme d'entraínement 6 de ce volet roulant 1.Thus, it has been shown in the context of this figure 1, a such rolling shutter 1 comprising an apron 2 defined by a juxtaposition of blades 3, this deck 2 being provided capable of coming wrap around a winding shaft 4 plus particularly illustrated in Figures 2 and 3, taking position inside a housing 5 accommodating, for elsewhere, the drive mechanism 6 of this roller shutter 1.

A noter que l'arbre d'enroulement 4 est monté en rotation, au niveau de ses extrémités 7, dans des paliers 8 associés à des joues supports 9 intégrées au caisson 5.Note that the winding shaft 4 is mounted in rotation, at level of its ends 7, in bearings 8 associated with support cheeks 9 integrated into the box 5.

Quant au mécanisme d'entraínement 6, il a été représenté, ici, de type manuel sachant que l'invention trouvera un intérêt tout particulier dans ce cas d'espèce. Toutefois, on observera qu'elle n'y est nullement limitée et que l'on peut tout à fait imaginer l'association de l'objet de la présente invention à des moyens d'entraínement de type motorisé.As for the drive mechanism 6, it has been shown here, manual type knowing that the invention will find an interest while particular in this case. However, we will observe that it is in no way limited to it and that we can completely imagine the association of the object of the present invention with motorized drive means.

Quoi qu'il en soit, ce mécanisme d'entraínement 6 est défini, dans ce cas et à titre d'exemple, par une poulie 10 autour de laquelle est amené à s'enrouler, au moins partiellement, un organe de traction 11 tel qu'une sangle, une chaíne, une cordelette ou analogue. Ainsi, un tel organe de traction 11 définit au moins un brin 12 s'étendant en dehors du caisson 5 de manière accessible à l'usager pour permettre à ce dernier d'assurer les commandes de déploiement et de repliement du tablier 2.Anyway, this drive mechanism 6 is defined, in this case and as an example, by a pulley 10 around which is caused to wind, at least partially, a traction member 11 such as a strap, a chain, a cord or the like. Thus, such a traction member 11 defines at least one strand 12 extending outside the box 5 accessible to the user to allow the latter ensure the deployment and folding orders for the apron 2.

Ce volet roulant 1, conforme à l'invention, est pourvu, en outre, d'un dispositif de blocage unidirectionnel 13 interposé entre le mécanisme d'entraínement 6, ici sous forme d'une poulie 10, et l'arbre d'enroulement 4. This roller shutter 1, according to the invention, is provided, in in addition, a unidirectional locking device 13 interposed between the drive mechanism 6, here in the form of a pulley 10, and the winding shaft 4.

Ce dispositif de blocage unidirectionnel 13 a pour fonction d'assurer l'immobilité en rotation dudit arbre d'enroulement 4 sous l'impulsion d'un couple directement imprimé sur ce dernier, par exemple, par le poids du tablier 2.This unidirectional locking device 13 has the function ensuring the immobility in rotation of said winding shaft 4 spurred on by a couple directly imprinted on this last, for example, by the weight of the deck 2.

Contrairement, un tel dispositif de blocage unidirectionnel 13 est défini à même d'autoriser la commande en rotation de cet arbre d'enroulement 4 au travers du mécanisme d'entraínement 6.In contrast, such a unidirectional locking device 13 is defined capable of authorizing the rotation control of this winding shaft 4 through the drive mechanism 6.

En fait, ce dispositif de blocage unidirectionnel 13 se caractérise en ce qu'il est constitué, d'une part, par un frein 14 comprenant un plateau fixe 15 contre lequel est repoussé, par des moyens de rappel élastiques 16, un plateau 17 qui, lui, est monté mobile, axialement tout en étant solidaire en rotation, sur l'arbre d'enroulement 4.In fact, this unidirectional locking device 13 is characterized in that it consists, on the one hand, of a brake 14 comprising a fixed plate 15 against which is pushed back, by elastic return means 16, a plate 17 which itself is mounted movable, axially while being integral in rotation, on the winding shaft 4.

Tel que visible dans les figures 2 et 3, un tel plateau mobile 17 est, préférentiellement, monté sur cet arbre d'enroulement 4 au niveau de l'une des extrémités 7 de ce dernier. Ainsi, selon un mode de réalisation préférentiel, ce plateau mobile 17 comporte un embout 18 prévu à même d'être emmanché, de manière coulissante axialement, dans cette extrémité 7 de l'arbre d'enroulement 4, habituellement de type tubulaire.As shown in Figures 2 and 3, such a movable tray 17 is preferably mounted on this winding shaft 4 at one of the ends 7 of the latter. So according to a preferred embodiment, this movable plate 17 has a nozzle 18 provided capable of being fitted, so sliding axially, in this end 7 of the shaft winding 4, usually of tubular type.

A noter, à ce propos, qu'au niveau de cette extrémité 7, l'arbre d'enroulement 4 peut être chemisé, intérieurement, à l'aide d'un manchon 19 ajusté à l'embout 18. Entre ce dernier et, selon le cas, ledit manchon 19 ou encore l'arbre d'enroulement 4 sont, alors, aménagés des moyens de blocage en rotation 20 du type clavette, rainure et languette ou analogue.Note, in this regard, that at this end 7, the winding shaft 4 can be lined, internally, at using a sleeve 19 adjusted to the nozzle 18. Between the latter and, as the case may be, said sleeve 19 or else the shaft winding 4 are then arranged locking means in rotation 20 of the key type, groove and tongue or the like.

Ce plateau mobile 17 est défini, en outre, par un flasque annulaire 21 recevant une garniture de freinage 22 en regard avec le plateau fixe 15 qui peut, lui-même, être pourvu d'une telle garniture de freinage 23. This movable plate 17 is further defined by a flange annular 21 receiving a brake lining 22 facing with the fixed plate 15 which can itself be provided with a such brake lining 23.

A noter, en ce qui concerne ce plateau fixe 15, qu'il est nécessairement associé à une partie fixe du volet roulant 1. Dans le cas du mode de réalisation préférentiel illustré dans les figures, un tel plateau fixe 15 est défini, substantiellement, par une joue support 9 contre laquelle est alors à même d'être repoussé le plateau mobile 17 sous l'impulsion desdits moyens de rappel élastiques 16.Note, with regard to this fixed plate 15, that it is necessarily associated with a fixed part of the roller shutter 1. In the case of the preferred embodiment illustrated in the figures, such a fixed plate 15 is defined, substantially, by a support cheek 9 against which is then able to be pushed back the movable plate 17 under the impulse of said elastic return means 16.

A ce propos, ce frein 14 du dispositif de blocage unidirectionnel 13 peut prendre position à l'intérieur du palier 8 assurant le maintien en rotation de l'arbre d'enroulement 4. Ainsi, ce palier 8 est, dans ce cas, défini sous forme d'une virole 24 solidaire de ladite joue support 9 et s'étendant en direction de l'arbre d'enroulement 4. Cette virole 24 est pourvue, à son extrémité libre 25 d'une portée annulaire 26 définissant le palier 8 proprement dit et venant coopérer avec une portée cylindrique 27, soit directement associée à l'arbre d'enroulement 4, soit au plateau mobile 17 du frein 14.In this regard, this brake 14 of the blocking device unidirectional 13 can take position inside the bearing 8 ensuring the rotation of the winding shaft 4. Thus, this bearing 8 is, in this case, defined in the form of a ferrule 24 integral with said support cheek 9 and extending in direction of the winding shaft 4. This ferrule 24 is provided at its free end 25 with an annular bearing 26 defining the bearing 8 proper and coming to cooperate with a cylindrical seat 27, either directly associated with the shaft winding 4, or to the movable plate 17 of the brake 14.

Finalement, tel que cela ressort de la description qui précède, la virole 24 associée à la joue support 9 vient délimiter un logement 28 prévu à même d'accueillir le frein 14. Quant aux moyens de rappel élastiques 16, ils sont, ici, interposés entre la portée annulaire 26 et le flasque annulaire 21 correspondant au plateau mobile 17.Finally, as appears from the above description, the ferrule 24 associated with the support cheek 9 delimits a housing 28 provided to accommodate the brake 14. As for elastic return means 16, they are, here, interposed between the annular surface 26 and the corresponding annular flange 21 to the movable plate 17.

Le dispositif de blocage unidirectionnel 13 est constitué, d'autre part, par des moyens d'engrènement 29 du mécanisme d'entraínement 6 sur le plateau mobile 17 qui sont prévus aptes, sous l'impulsion d'un couple imprimé par ledit mécanisme d'entraínement 6, à exercer, sur ce plateau mobile 17, au moins un couple et une force f à composante axiale pour assurer le décollement dudit plateau mobile 17 par rapport au plateau fixe 15, contre l'action des moyens de rappel élastiques 16.The unidirectional locking device 13 consists, on the other hand, by engagement means 29 of the mechanism 6 on the movable plate 17 which are provided capable, under the impulse of a torque impressed by said mechanism drive 6, to exercise, on this movable plate 17, at least a torque and a force f with an axial component to ensure the detachment of said movable plate 17 relative to the fixed plate 15, against the action of the elastic return means 16.

Selon un mode de réalisation préférentiel, ces moyens d'engrènement 29 consistent en un premier disque 30 associé audit plateau mobile 17 du frein 14 et en un second disque 31 solidaire, en rotation et en translation, d'un arbre d'entraínement 32 du mécanisme d'entraínement 6. Ce premier et ce second disque 30, 31 viennent s'engréner l'un sur l'autre au moyen de dentures 33, doigts d'entraínement, ergots ou analogues dont le profil 34 est défini à même de répondre à la condition précitée.According to a preferred embodiment, these means meshing 29 consist of a first associated disc 30 to said movable plate 17 of the brake 14 and into a second disc 31 integral, in rotation and in translation, with a shaft 32 of the drive mechanism 6. This first and this second disc 30, 31 come to mesh with each other at the means of teeth 33, drive fingers, pins or analogues whose profile 34 is defined capable of meeting the aforementioned condition.

L'on comprend, évidemment, qu'il est à la portée de l'Homme du Métier de concevoir différents types de mécanismes d'engrènement de ces disques 30, 31 à même de conduire, sous l'impulsion du mécanisme d'entraínement 6, à la création d'une force f ayant tendance à repousser, axialement, le plateau mobile 17 du frein 14 pour venir, ainsi, le décoller du plateau fixe 15.We understand, of course, that it is within the reach of Man Craft to design different types of mechanisms meshing of these discs 30, 31 capable of driving, under the impulse of the drive mechanism 6, to the creation of a force f tending to repel, axially, the plate mobile 17 of brake 14 to come and take it off from the plate fixed 15.

L'on observera, tout particulièrement, à ce propos, que s'il est, bien sûr, recherché le décollement de ce plateau mobile 17 du frein 14 par rapport au plateau fixe 15 en début de manoeuvre, il n'en reste pas moins que, pour assurer le déploiement ou le repliement du tablier, il est nécessaire, au-delà de cette première étape, que lesdits moyens d'engrènement 29 restent actifs, c'est à dire que les disques 30, 31 restent engrénés pour permettre, précisément, la commande en rotation de l'arbre d'entraínement 4. Aussi, ledit plateau mobile 17 du frein 14 est rendu mobile, axialement, par rapport à l'arbre d'enroulement 4, suivant une course 35 déterminée et qui est, par conséquent, définie suffisante pour assurer ce décollement tout en permettant cet entraínement.It will be observed, in particular, in this regard, that if is, of course, sought the detachment of this movable plate 17 of the brake 14 relative to the fixed plate 15 at the start of maneuver, the fact remains that, to ensure the deployment or folding of the apron, it is necessary, beyond of this first step, that said meshing means 29 remain active, i.e. discs 30, 31 remain meshed to allow, precisely, the control in rotation of the drive shaft 4. Also, said movable plate 17 of the brake 14 is made to move axially relative to the shaft winding 4, following a determined stroke 35 which is, therefore, defined sufficient to ensure this separation while allowing this training.

Ainsi, cette course 35 correspond au jeu persistant entre le chant d'extrémité de l'arbre d'enroulement 4 et un épaulement 36 défini, en correspondance, au niveau de la partie externe de l'embout 18 correspondant au plateau mobile 17. Bien entendu, de son côté, le disque 31, solidaire d'un arbre d'entraínement 32 du mécanisme d'entraínement 6, est nécessairement maintenu fixe en translation, au moins dans la direction correspondant à la course 35, de manière à pouvoir maítriser celle-ci.Thus, this race 35 corresponds to the persistent play between the end edge of the winding shaft 4 and a shoulder 36 defined, in correspondence, at the level of the external part of the end piece 18 corresponding to the movable plate 17. Of course, for its part, the disc 31, integral with a drive shaft 32 of the drive mechanism 6, is necessarily maintained fixed in translation, at least in the direction corresponding to race 35, so that you can control it.

Il est à remarquer que, si sur les figures 2 et 3, la virole 24, définissant le palier 8, présente un diamètre plus important que celui de l'arbre d'enroulement 4, l'on pourrait, bien entendu, imaginer une conception où ces diamètres sont identiques de sorte que les lames 3 du tablier 2 puissent s'étendre, au niveau de leur extrémité, jusqu'à hauteur de la joue support 9. Cela présenterait l'avantage de conduire à une taille de caisson 5 plus petite. Dans ce but, l'on observera, sur ces figures 2 et 3, qu'au niveau du plateau mobile 17 du frein 14 est ménagé un évidement 37 dont le fond 38 définit, substantiellement, le premier disque 30, à l'intérieur de cet évidement 37 prenant position, par ailleurs, le second disque 31 correspondant aux moyens d'engrènement 29.It should be noted that, if in Figures 2 and 3, the ferrule 24, defining the bearing 8, has a larger diameter important than that of the winding shaft 4, we could, of course imagine a design where these diameters are identical so that the blades 3 of the deck 2 can extend, at their end, to the height of the plays support 9. This would have the advantage of leading to a 5 smaller enclosure size. For this purpose, we will observe, in these Figures 2 and 3, that at the movable plate 17 of the brake 14 is formed a recess 37 whose bottom 38 defines, substantially, the first disc 30, inside this recess 37 taking position, moreover, the second disc 31 corresponding to the engagement means 29.

Finalement, tel que cela ressort de la description qui précède, la présente invention permet de répondre, avantageusement, au problème posé dans la mesure où elle a pour objet un dispositif de blocage unidirectionnel à la fois de conception simple et d'un fonctionnement sûr.Finally, as appears from the above description, the present invention makes it possible to advantageously respond to the problem posed insofar as it relates to a device unidirectional locking mechanism both simple and safe operation.

Claims (7)

  1. One-way locking device designed capable of being interposed between a driving mechanism (6), namely of a manual type, and a rolling-up shaft (4) of an apron (2) of a roller shutter (1), said device being comprised, on the one hand, of a brake (14) including a fixed disc (15) capable of being associated with a fixed portion of the roller shutter (1) and defined by a supporting side-plate (9) provided with a bearing block (8) capable of rotationally receiving one end (7) of the rolling-up shaft (4), against this fixed disc (15) being pushed back through springy restoring means (16) a movable disc (17) aimed at being made integral in rotation with said rolling-up shaft (4) and, on the other hand, of means (29) for allowing the driving mechanism (6) to engage with said movable disc (17) designed capable of exerting onto this movable disc (17), under the action of the torque imparted by said driving mechanism (6), at least a torque and a force (f) with axial components, in order to ensure the separation of said movable disc (17) with respect to the fixed disc (15), against the action of the springy restoring means (16), characterised in that the movable disc (17) is designed capable of being mounted movable in an axial direction onto the rolling-up shaft (4) and includes a tip (18) designed capable of being inserted, slidably in an axial direction, at the level of one end (7) of this rolling-up shaft (4), means for locking in rotation (20), such as a pin, a groove and tongue or the like, being designed capable of acting between the latter and this tip (18).
  2. One-way locking device according to claim 1, characterised in that the movable disc (17) is defined by an annular flange receiving a brake lining (22) facing the fixed disc (15), which is namely provided with such a brake lining (23).
  3. One-way locking device (13) according to any of claims 1 or 2, characterised in that the brake (14) is positioned inside said bearing block (8) defined in the form of a ferrule (24) integral with the supporting side-plate (9) and extending towards the winding-up shaft (4).
  4. One-way locking device (13) according to claim 3, characterised in that said ferrule (24) is provided, at is free end (25) with an annular journal (26) co-operating with a cylindrical journal (27) associated either directly with the winding-up (4) or with the movable disc (17) of the brake (14).
  5. One-way locking device (13) according to any of the preceding claims, characterised in that the engaging means (29) of the driving mechanism (6) are comprised of a first disc (30) associated with the movable disc (17) of the brake (14) and of a second disc (31) integral, in rotation and translation, with a driving shaft (32) of the driving mechanism (6), this first and this second disc (30, 31) engaging into each other by means of toothings (33), driving catches, pawls or the like, the profile (34) of which is defined capable of ensuring the separation of said movable disc (17) with respect to the fixed disc (15) under the action of a torque imparted by said driving mechanism.
  6. One-way locking device (13) according to any of the preceding claims, characterised in that the movable disc (17) of the brake (14) is made axially movable with respect to the winding-up shaft (4) over a sufficient travel distance (35) to allow the separation of said movable disc (17) with respect to the fixed disc (15), while allowing the driving of the winding-up shaft (4).
  7. One-way locking device (13) according to claim 5, characterised in that at the level of the movable disc (17) of the brake (14) is provided for a recess (37) the bottom (38) of which substantially defines the first disc (30), the second disc (31) corresponding to the engaging means (29) being positioned inside this recess (37).
EP19990440064 1998-04-02 1999-03-26 One-way locking device for roller shutter Expired - Lifetime EP0947661B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804275A FR2777037B1 (en) 1998-04-02 1998-04-02 UNIDIRECTIONAL LOCKING DEVICE FOR ROLLING SHUTTER
FR9804275 1998-04-02

Publications (2)

Publication Number Publication Date
EP0947661A1 EP0947661A1 (en) 1999-10-06
EP0947661B1 true EP0947661B1 (en) 2003-06-04

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Application Number Title Priority Date Filing Date
EP19990440064 Expired - Lifetime EP0947661B1 (en) 1998-04-02 1999-03-26 One-way locking device for roller shutter

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EP (1) EP0947661B1 (en)
DE (1) DE69908473T2 (en)
ES (1) ES2200487T3 (en)
FR (1) FR2777037B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866921B1 (en) * 2004-02-26 2006-06-02 Deprat Jean Sa DEVICE FOR CLOSING AND OPENING AN OPENING WITH A TORQUE LIMITING FUNCTION
DE102005015172A1 (en) * 2005-04-02 2006-11-09 Gross, Beatrix, Dipl.-Ing. Brake unit for sun awning deployed from a spindle by an electric motor acts against a spring and brake lining
CN107503662B (en) * 2017-09-21 2019-04-23 闫淑军 A kind of electric rolling door with dual anti-theft lock

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004629B1 (en) * 1978-04-04 1981-11-25 LEOPOLDO CARDUCCI & C. S.a.s. Operating and locking device for roller blinds
US5488983A (en) * 1989-08-30 1996-02-06 Odin Ag Roller assembly for curtains and the like
FR2749361B1 (en) 1996-05-28 1998-08-07 Somfy REDUCER WITH HOLDAM COUPLING

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ES2200487T3 (en) 2004-03-01
DE69908473D1 (en) 2003-07-10
FR2777037A1 (en) 1999-10-08
FR2777037B1 (en) 2000-05-26
DE69908473T2 (en) 2004-05-13
EP0947661A1 (en) 1999-10-06

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