EP0899414A1 - Cord winch with offset drive - Google Patents

Cord winch with offset drive Download PDF

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Publication number
EP0899414A1
EP0899414A1 EP98402046A EP98402046A EP0899414A1 EP 0899414 A1 EP0899414 A1 EP 0899414A1 EP 98402046 A EP98402046 A EP 98402046A EP 98402046 A EP98402046 A EP 98402046A EP 0899414 A1 EP0899414 A1 EP 0899414A1
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EP
European Patent Office
Prior art keywords
pulley
cord
orifice
axis
input shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98402046A
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German (de)
French (fr)
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EP0899414B1 (en
Inventor
Jean-Marie Allemand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zurfluh Feller SAS
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Zurfluh Feller SAS
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Publication date
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Publication of EP0899414A1 publication Critical patent/EP0899414A1/en
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Publication of EP0899414B1 publication Critical patent/EP0899414B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/78—Operating, 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
    • E06B2009/905—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions using wrap spring clutches

Definitions

  • the present invention relates to a device allowing the operation of the apron-carrying shaft of a roller shutter. It relates more particularly to a system cord winch fitted with a brake on the shaft apron holder, a declutching or clutching means active when there is too much torque on the control unit, a limit switch system which acts on the winch when the apron is in low position, and which also has the characteristic of offering an offset maneuver for bring the cord control mechanism out of the reduced width zone which is generally located in end of the shaft of the roller shutter deck.
  • cord winch with a declutching system and clutch, a limit switch system, non-return brake Generally, all of these different systems are positioned within a cheek on the same axis. The axis of apron and the axis of the winch being combined, all organs of the aforementioned different systems are stacked the on top of each other, increasing the size of the complete device.
  • the present invention therefore aims to overcome the disadvantages of cord winches known in the art anterior, by proposing an operating cord winch offset that can be used in an application particular for mounting roller shutter boxes for the rehabilitation of bay windows. Indeed, in this type of application, we keep the old dormant on which we just brought a new frame that covers previous. There is therefore little space between the new and the former dormant right behind the scenes. Space remained free is simply filled by one of the gables of the reducer, which therefore requires shifting to the side of the the other mechanisms.
  • the cable winch with offset control, object of the invention comprising, inside a cavity a cheek for rolling shutter, a pulley on which routes a cord, a clutch and declutching device having the function of torque limiter and a member reducer, between the pulley and a winding axis of the roller shutter deck, a non-return device preventing the weight of the deck to rotate the maneuver without operator action on the cord, a non-return brake system, characterized in that it has two reservations in the cheek material serving as bearings for, on the one hand the axis of rotation of the pulley, and on the other hand the axis of rotation of the roller shutter winding shaft, the axes being staggered.
  • Figure 1 there is shown at 1 the axis of the deck of the rolling shutter, in 2 the axis of the cord winch, in 3 the new frame, in 4 the old frame, in 5 the backstage, in 6 the pulley of the cord winch, in 7 'the space available between the two frames, the part drawn in dotted line delimiting the device, object of the invention.
  • this first includes a cheek 7 obtained in particular by an injection technology of plastic material.
  • the axis of rotation 11 of the pulley 17 and the axis of rotation 12 of the roller shutter shaft are positioned according to two separate horizontal planes.
  • the axis of rotation of the pulley 11 and the axis of rotation of the shaft 12 are positioned in two separate vertical planes.
  • Cheek 7 which is symmetrical to be mounted either to the left or to the right of the shutter box rolling, thanks to a console, has in the walls lateral 13, 14 lower and upper, an orifice 15 allowing the passage of the cord 16 and opening to the right of the bearing ensuring the mounting of the pulley 17.
  • This last 17 is positioned at the back of the cheek 7 at within the cavity 8, so as to present the route of the bead with regard to orifice 15.
  • This pulley 17 has in its center an orifice 18 whose dimensions are compatible with a body of clutch / clutch 19.
  • This member 19 is produced from a gasket elastomer foam which is shaped into a ring 20.
  • This ring 20 has, at its lateral face 21 in contact with the orifice 18 formed in the pulley 17, zones combined with the projecting zones which participate to its radial immobilization.
  • the ring 20 includes a plurality of recesses 22, noticeably oblong, judiciously spaced on its slice, and which under the effect of a certain torque threshold elastically deforms.
  • the ring 20 has a coaxial orifice 23 relative to the orifice 18 of the pulley 17, the side walls of which have an epicyclic profile.
  • the other declutching / clutching member is constituted by an input shaft 24.
  • This input shaft 24 has, on one of its front faces, a connection means produced in particular in the form of a fluted part or tooth which cooperates at the axis of rotation 11 of the pulley 17.
  • the outer wall of the input shaft 24 is provided with a succession of bosses whose profile is similar to those made in the center 23 of the elastomer ring 20, its profiles cooperating with each other so as to ensure the transmission of the torque regardless of its meaning.
  • the operation of the clutch / disengage member is the following :
  • the cavities 22 present in the thickness of the ring 20 in elastomer retain their geometry and do not not distort.
  • the ring 20 does not shear between its side wall, which is fixed in the recess 18 made in the pulley 17, and its internal side wall which cooperates at the input shaft 24.
  • the movement of rotation printed by the cord 16 is transmitted to the shaft entrance 24 then, via a train of gears 25, 26 forming a reducer, to the tube winding 27 of the roller shutter deck.
  • the cavities 22 are deformed under the action of the couple and induce a shear between the lateral face of the ring 20 which is fixed and that which is located the interface with the input shaft 24.
  • the profile epicyclic of these faces in contact under the presence of these shear forces, causes a slip relative in rotation between the input shaft 24 and the ring 20 in elastomer.
  • the movement printed on the winch is therefore, during the entire phase of sliding between the elastomer ring 20 and input shaft 24, removed until the respective side faces cooperate again as soon as the intensity torque is removed abnormal.
  • the system clutch / declutching clips these torque values too much important, detrimental to the mechanical strength of the device and of the entire roller shutter, and stabilizes around of an average value.
  • the input shaft 24 is provided with a protuberance 28 projecting in a direction substantially perpendicular to the lateral faces of the pulley 17, of so as to conform an entry knock allowing the drive of a spring 29.
  • the direction of the propeller of this spring is such that if the terminal strands become integral with the training knots 28, 30, cooperating respectively at the level of the pulley 17 and at the level of one 26 of the reduction gears, so that the number of turns of this spring 29 tends to increase, this will tend to decrease the diameter outside of this spring.
  • This spring 29 can therefore rotate freely and will not come into contact with a bell 31 surrounding it, this bell 31 being in turn secured to a support frame 32 (which is fixed in rotation) by external grooves, or simply by interlocking.
  • This bell 31 prepared in a strip metal constitutes the lining which will allow the friction braking of the turns of the spring 29 against she.
  • the support frame 32 which allows the maintenance of the bell 31, is positioned coaxially with the axis of rotation 11 of the pulley 17, and is held in the cavity 8 of the play.
  • This frame 32 of substantially elliptical shape, has an orifice 33 for the passage of one of the pinions 26 of the gear train, this one also playing the role of the output toc connected to the spring 29.
  • the gear train 25, 26 forming a reducer comprises a limit switch system in the lower position of the deck.
  • This limit switch system is developed from characteristics of the gears. So the gears 25, 26 forming the reducer have a number of teeth first between them. If we consider a tooth on each gear having this property, the kinematics of these gears determines a single cross point for the two teeth considered, this crossing being repeated according to a period of n turns (n integer). So it is enough to determine, by an adequate choice of the number of teeth various gears belonging to the reducer, a reduction coefficient between the tree linked to the winch at cord and the shaft secured to the roller shutter deck, this coefficient also determining the number of turns of the receiving shaft necessary to move the race of said apron.
  • the reducer can also be produced from a planetary gear.
  • the remote control cord winch has, within of the cavity 8 of the cheek 7, on the one hand a stack constituted by the pulley 17, the elastomer lining 20, the support frame 32, the input shaft 24, the bell 31, the spring 29, the drive bar 28, the wheel 26, which are carried by the axis 11 of the pulley 17, and other share another stack coaxial with axis 12 of the shaft of the roller shutter and provided with another gear 25 forming the reducer and integral with the winding shaft 27 of the apron. All these parts are trapped inside of the cheek cavity and are held in place by through a flange 34.
  • This flange 34 is fixed to the casing by members suitable (screws, rivets ).

Abstract

The winch comprises a pulley (17), a cord (16), a torque limiting coupling (20) and reduction gear, located in a housing side panel (7). The side panel has two apertures (9,10) forming bearings for the pulley axle (11) and the shutter roller spindle (12), which are offset in different vertical and horizontal planes. The winch also incorporates a non-return brake, located coaxially with the pulley axle and comprising an input shaft (24) with a spring (29) in a shroud (31), held in position in a supporting frame (32). Its reduction gear has a gear train (25,26) connecting with the shutter roller (27) and pulley respectively.

Description

La présente invention est relative à un dispositif permettant la manoeuvre de l'arbre porte-tablier d'un volet roulant. Elle vise plus particulièrement un système de treuil à cordon équipé d'un moyen de frein sur l'arbre porte-tablier, d'un moyen de débrayage ou d'embrayage actif lors de la présence d'un couple trop important sur l'organe de commande, d'un système de fin de course qui agit sur le treuil lorsque le tablier se trouve en position basse, et qui présente en plus la caractéristique d'offrir une manoeuvre décalée pour amener le mécanisme de commande par cordon en dehors de la zone de largeur réduite qui se situe généralement en bout de l'arbre du tablier du volet roulant.The present invention relates to a device allowing the operation of the apron-carrying shaft of a roller shutter. It relates more particularly to a system cord winch fitted with a brake on the shaft apron holder, a declutching or clutching means active when there is too much torque on the control unit, a limit switch system which acts on the winch when the apron is in low position, and which also has the characteristic of offering an offset maneuver for bring the cord control mechanism out of the reduced width zone which is generally located in end of the shaft of the roller shutter deck.

On connaít, par le brevet EP-0 692 605, des systèmes de treuil à cordon possédant un système de débrayage et d'embrayage, un système de fin de course, frein anti-retour. Généralement, tous ces différents systèmes sont positionnés au sein d'une joue sur un même axe. L'axe du tablier et l'axe du treuil étant confondus, tous les organes des différents systèmes précités sont empilés les uns sur les autres, ce qui augmente l'encombrement du dispositif complet.We know, from patent EP-0 692 605, cord winch with a declutching system and clutch, a limit switch system, non-return brake. Generally, all of these different systems are positioned within a cheek on the same axis. The axis of apron and the axis of the winch being combined, all organs of the aforementioned different systems are stacked the on top of each other, increasing the size of the complete device.

La présente invention vise donc à pallier les inconvénients des treuils à cordon connus de l'art antérieur, en proposant un treuil à cordon à manoeuvre décalée qui puisse être utilisé dans une application particulière au montage de caissons de volets roulants pour la réhabilitation de baies vitrées. En effet, dans ce type d'application, on conserve l'ancien dormant sur lequel on vient rapporter un nouveau dormant qui recouvre le précédent. Il y a donc peu d'espace entre le nouveau et l'ancien dormant au droit des coulisses. L'espace resté libre est simplement comblé par l'un des pignons du réducteur, ce qui oblige donc à décaler sur le côté du caisson les autres mécanismes.The present invention therefore aims to overcome the disadvantages of cord winches known in the art anterior, by proposing an operating cord winch offset that can be used in an application particular for mounting roller shutter boxes for the rehabilitation of bay windows. Indeed, in this type of application, we keep the old dormant on which we just brought a new frame that covers previous. There is therefore little space between the new and the former dormant right behind the scenes. Space remained free is simply filled by one of the gables of the reducer, which therefore requires shifting to the side of the the other mechanisms.

A cet effet, le treuil à cordon à commande décalée, objet de l'invention, comprenant, à l'intérieur d'une cavité d'une joue pour volet roulant, une poulie sur laquelle chemine un cordon, un organe d'embrayage et de débrayage ayant fonction de limiteur de couple et un organe réducteur, entre la poulie et un axe d'enroulement du tablier du volet roulant, un organe anti-retour empêchant le poids du tablier de faire tourner l'organe de manoeuvre sans l'action de l'opérateur sur le cordon, un système de frein anti-retour, se caractérise en ce qu'il est muni au sein de la joue de deux réservations de matière servant de paliers pour, d'une part l'axe de rotation de la poulie, et d'autre part l'axe de rotation de l'arbre d'enroulement du volet roulant,les axes étant décalés.To this end, the cable winch with offset control, object of the invention, comprising, inside a cavity a cheek for rolling shutter, a pulley on which routes a cord, a clutch and declutching device having the function of torque limiter and a member reducer, between the pulley and a winding axis of the roller shutter deck, a non-return device preventing the weight of the deck to rotate the maneuver without operator action on the cord, a non-return brake system, characterized in that it has two reservations in the cheek material serving as bearings for, on the one hand the axis of rotation of the pulley, and on the other hand the axis of rotation of the roller shutter winding shaft, the axes being staggered.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après, en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Sur les figures :

  • la figure 1 est une vue de dessus en coupe, illustrant le montage du dispositif, objet de l'invention, au sein d'une baie vitrée ;
  • la figure 2 est une vue en perspective et en éclaté de l'ensemble des pièces constituant le dispositif, objet de l'invention.
Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the appended drawings which illustrate an embodiment thereof devoid of any limiting character. In the figures:
  • Figure 1 is a top view in section, illustrating the mounting of the device, object of the invention, within a bay window;
  • Figure 2 is a perspective and exploded view of all the parts constituting the device, object of the invention.

Sur la figure 1, on a représenté en 1 l'axe du tablier du volet roulant, en 2 l'axe du treuil à cordon, en 3 le nouveau dormant, en 4 l'ancien dormant, en 5 la coulisse, en 6 la poulie du treuil à cordon, en 7' l'espace disponible entre les deux dormants, la partie dessinée en pointillés délimitant le dispositif, objet de l'invention.In Figure 1, there is shown at 1 the axis of the deck of the rolling shutter, in 2 the axis of the cord winch, in 3 the new frame, in 4 the old frame, in 5 the backstage, in 6 the pulley of the cord winch, in 7 'the space available between the two frames, the part drawn in dotted line delimiting the device, object of the invention.

Selon un mode préféré de réalisation du treuil à cordon à commande déportée, objet de l'invention, (se reporter à la figure 2), celui-ci comporte tout d'abord, une joue 7 obtenue notamment par une technologie d'injection de matière plastique. Cette joue 7, sensiblement de forme rectangulaire, coopère grâce à ses contours extérieurs, notamment par une opération d'emboítage avec une console qui est reliée au caisson du volet roulant. Elle possède en son centre une cavité 8 qui dispose tout particulièrement de deux réservations de matière 9, 10 formant palier pour des axes de rotation, l'un 11 étant destiné à l'axe de la poulie, l'autre 12 étant réservé à l'axe de l'arbre du volet roulant.According to a preferred embodiment of the cord winch remote control, object of the invention, (see Figure 2), this first includes a cheek 7 obtained in particular by an injection technology of plastic material. This cheek 7, substantially shaped rectangular, cooperates thanks to its external contours, in particular by an interlocking operation with a console which is connected to the roller shutter box. She owns in its center a cavity 8 which has everything particularly two material reservations 9, 10 forming a bearing for axes of rotation, one 11 being intended for the axis of the pulley, the other 12 being reserved for the axis of the roller shutter shaft.

Selon une caractéristique avantageuse de l'invention, l'axe de rotation 11 de la poulie 17 et l'axe de rotation 12 de l'arbre du volet roulant sont positionnés selon deux plans horizontaux distincts.According to an advantageous characteristic of the invention, the axis of rotation 11 of the pulley 17 and the axis of rotation 12 of the roller shutter shaft are positioned according to two separate horizontal planes.

Selon une autre caractéristique avantageuse de l'invention, l'axe de rotation de la poulie 11 et l'axe de rotation de l'arbre 12 sont positionnés selon deux plans verticaux distincts.According to another advantageous characteristic of the invention, the axis of rotation of the pulley 11 and the axis of rotation of the shaft 12 are positioned in two separate vertical planes.

On peut ainsi, grâce à la position respective de ces deux axes 11, 12, d'une part déporter l'axe de la manoeuvre et notamment le mécanisme de commande par cordon en dehors de la zone de largeur réduite située en bout de l'arbre, et d'autre part de pouvoir incorporer, dans la cavité dont l'encombrement est conditionné par le gabarit du caisson du volet roulant, l'ensemble du mécanisme. Cette disposition garantit que, dans une application destinée à la réhabilitation de baies vitrées, la zone destinée aux ouvrants sera la plus grande possible.We can thus, thanks to the respective position of these two axes 11, 12, on the one hand offset the axis of the maneuver and especially the cord control mechanism outside the reduced width zone located at the end of the tree, and on the other hand to be able to incorporate, into the cavity whose size is conditioned by the size of the roller shutter box, the entire mechanism. This provision ensures that in an application intended for the rehabilitation of bay windows, the area intended for opening will be as large as possible.

La joue 7 qui est symétrique pour être montée indifféremment à gauche ou à droite du caisson du volet roulant, grâce à une console, comporte dans les parois latérales 13, 14 inférieure et supérieure, un orifice 15 permettant le passage du cordon 16 et débouchant au droit du palier assurant le montage de la poulie 17. Cette dernière 17 est positionnée dans le fond de la joue 7 au sein de la cavité 8, de manière à présenter le cheminement du cordon au regard de l'orifice 15. Cette poulie 17 comporte en son centre un orifice 18 dont les dimensions sont compatibles avec un organe de débrayage/embrayage 19.Cheek 7 which is symmetrical to be mounted either to the left or to the right of the shutter box rolling, thanks to a console, has in the walls lateral 13, 14 lower and upper, an orifice 15 allowing the passage of the cord 16 and opening to the right of the bearing ensuring the mounting of the pulley 17. This last 17 is positioned at the back of the cheek 7 at within the cavity 8, so as to present the route of the bead with regard to orifice 15. This pulley 17 has in its center an orifice 18 whose dimensions are compatible with a body of clutch / clutch 19.

Cet organe 19 est élaboré à partir d'une garniture en mousse d'élastomère qui est conformée en une bague 20. Cette bague 20 comporte, au niveau de sa face latérale 21 en contact avec l'orifice 18 pratiqué dans la poulie 17, des zones conjuguées aux zones en saillie qui participent à son immobilisation radiale.This member 19 is produced from a gasket elastomer foam which is shaped into a ring 20. This ring 20 has, at its lateral face 21 in contact with the orifice 18 formed in the pulley 17, zones combined with the projecting zones which participate to its radial immobilization.

La bague 20 comprend une pluralité d'évidements 22, sensiblement oblongs, judicieusement espacés sur sa tranche, et qui sous l'effet d'un certain seuil de couple se déforme élastiquement.The ring 20 includes a plurality of recesses 22, noticeably oblong, judiciously spaced on its slice, and which under the effect of a certain torque threshold elastically deforms.

La bague 20 comporte un orifice coaxial 23 par rapport à l'orifice 18 de la poulie 17, dont les parois latérales disposent d'un profil épicycloïdique. The ring 20 has a coaxial orifice 23 relative to the orifice 18 of the pulley 17, the side walls of which have an epicyclic profile.

L'autre organe de débrayage/embrayage est constitué par un arbre d'entrée 24. Cet arbre d'entrée 24 dispose, sur l'une de ses faces frontales, d'un moyen de connexion réalisé sous la forme notamment d'une partie cannelée ou dentée qui coopère au niveau de l'axe de rotation 11 de la poulie 17.The other declutching / clutching member is constituted by an input shaft 24. This input shaft 24 has, on one of its front faces, a connection means produced in particular in the form of a fluted part or tooth which cooperates at the axis of rotation 11 of the pulley 17.

La paroi externe de l'arbre d'entrée 24 est pourvue d'une succession de bossages dont le profil est similaire à ceux pratiqués au centre 23 de la bague d'élastomère 20, ses profils coopérant entre eux de manière à assurer la transmission du couple de rotation quel que soit son sens.The outer wall of the input shaft 24 is provided with a succession of bosses whose profile is similar to those made in the center 23 of the elastomer ring 20, its profiles cooperating with each other so as to ensure the transmission of the torque regardless of its meaning.

Le fonctionnement de l'organe d'embrayage/débrayage est le suivant :The operation of the clutch / disengage member is the following :

En présence d'un couple de rotation d'intensité normale, aussi bien à la montée ou qu'à la descente du tablier, les cavités 22 présentes dans l'épaisseur de la bague 20 en élastomère conservent leur géométrie et ne se déforment pas. La bague 20 ne se cisaille pas entre sa paroi latérale, qui est fixe dans l'évidement 18 pratiqué dans la poulie 17, et sa paroi latérale interne qui coopère au niveau de l'arbre d'entrée 24. Le mouvement de rotation imprimé par le cordon 16 se transmet à l'arbre d'entrée 24 puis, par l'intermédiaire d'un train d'engrenages 25, 26 formant réducteur, au tube d'enroulement 27 du tablier du volet roulant.In the presence of a torque of normal intensity, as well as up or down the deck, the cavities 22 present in the thickness of the ring 20 in elastomer retain their geometry and do not not distort. The ring 20 does not shear between its side wall, which is fixed in the recess 18 made in the pulley 17, and its internal side wall which cooperates at the input shaft 24. The movement of rotation printed by the cord 16 is transmitted to the shaft entrance 24 then, via a train of gears 25, 26 forming a reducer, to the tube winding 27 of the roller shutter deck.

En présence d'un couple de rotation d'intensité anormale, les cavités 22 se déforment sous l'action du couple et induisent un cisaillement entre la face latérale de la bague 20 qui est fixe et celle qui se trouve à l'interface avec l'arbre d'entrée 24. Le profil épicycloïdique de ces faces en contact sous la présence de ces forces de cisaillement, provoque un glissement relatif en rotation entre l'arbre d'entrée 24 et la bague 20 en élastomère. Le mouvement imprimé sur le treuil se trouve donc, durant toute la phase de glissement entre la bague 20 en élastomère et l'arbre d'entrée 24, supprimé jusqu'à ce que les faces latérales respectives coopèrent de nouveau dès la suppression du couple d'intensité anormale.In the presence of a torque of abnormal intensity, the cavities 22 are deformed under the action of the couple and induce a shear between the lateral face of the ring 20 which is fixed and that which is located the interface with the input shaft 24. The profile epicyclic of these faces in contact under the presence of these shear forces, causes a slip relative in rotation between the input shaft 24 and the ring 20 in elastomer. The movement printed on the winch is therefore, during the entire phase of sliding between the elastomer ring 20 and input shaft 24, removed until the respective side faces cooperate again as soon as the intensity torque is removed abnormal.

Ainsi, si l'utilisateur sollicite le cordon 16 du treuil exagérément à la montée ou à la descente, le système d'embrayage/débrayage écrête ces valeurs de couple trop important, néfaste à la tenue mécanique du dispositif et de l'ensemble du volet roulant, et se stabilise autour d'une valeur moyenne.Thus, if the user requests the cord 16 of the winch excessively up or down, the system clutch / declutching clips these torque values too much important, detrimental to the mechanical strength of the device and of the entire roller shutter, and stabilizes around of an average value.

Le fonctionnement du système de frein anti-retour est le suivant :The operation of the non-return brake system is next :

L'arbre d'entrée 24 est muni d'une protubérance 28 faisant saillie dans une direction sensiblement perpendiculaire aux faces latérales de la poulie 17, de manière à conformer un toc d'entrée permettant l'entraínement d'un ressort 29. Le sens de l'hélice de ce ressort est tel que, si les brins terminaux deviennent solidaires des tocs d'entraínement 28, 30, coopérant respectivement au niveau de la poulie 17 et au niveau de l'un 26 des engrenages formant réducteur, pour que le nombre de spires de ce ressort 29 ait tendance à augmenter, ceci tendra à faire diminuer le diamètre extérieur de ce ressort. Ce ressort 29 pourra donc tourner librement et ne viendra pas au contact d'une cloche 31 l'entourant, cette cloche 31 étant quant à elle solidaire d'un bâti support 32 (qui est fixe en rotation) par des cannelures externes, ou simplement par emboítement. Cette cloche 31 élaborée dans un feuillard métallique constitue la garniture qui va permettre le freinage par frottement des spires du ressort 29 contre elle. The input shaft 24 is provided with a protuberance 28 projecting in a direction substantially perpendicular to the lateral faces of the pulley 17, of so as to conform an entry knock allowing the drive of a spring 29. The direction of the propeller of this spring is such that if the terminal strands become integral with the training knots 28, 30, cooperating respectively at the level of the pulley 17 and at the level of one 26 of the reduction gears, so that the number of turns of this spring 29 tends to increase, this will tend to decrease the diameter outside of this spring. This spring 29 can therefore rotate freely and will not come into contact with a bell 31 surrounding it, this bell 31 being in turn secured to a support frame 32 (which is fixed in rotation) by external grooves, or simply by interlocking. This bell 31 prepared in a strip metal constitutes the lining which will allow the friction braking of the turns of the spring 29 against she.

Par contre, si sous l'effet de la charge, le toc de sortie 30 (côté arbre 27 du volet roulant) a tendance à tourner de manière à faire diminuer le nombre de spires, cette réduction se traduit alors par une augmentation du diamètre de ce ressort 29, qui vient alors frotter au contact de ladite cloche 31.On the other hand, if under the effect of the load, the knock of outlet 30 (shaft side 27 of the roller shutter) tends to rotate so as to decrease the number of turns, this reduction then results in an increase in the diameter of this spring 29, which then rubs at contact of said bell 31.

Le bâti support 32, qui permet le maintien de la cloche 31, est positionné coaxialement à l'axe de rotation 11 de la poulie 17, et est maintenu dans la cavité 8 de la joue. Ce bâti 32, de forme sensiblement elliptique, comporte un orifice 33 pour le passage d'un des pignons 26 du train d'engrenages, celui-ci jouant également le rôle du toc de sortie relié au ressort 29.The support frame 32, which allows the maintenance of the bell 31, is positioned coaxially with the axis of rotation 11 of the pulley 17, and is held in the cavity 8 of the play. This frame 32, of substantially elliptical shape, has an orifice 33 for the passage of one of the pinions 26 of the gear train, this one also playing the role of the output toc connected to the spring 29.

Le train d'engrenages 25, 26 formant réducteur comporte un système de fin de course en position basse du tablier. Ce système de fin de course est élaboré à partir des caractéristiques des engrenages. Ainsi, les engrenages 25, 26 formant le réducteur possèdent un nombre de dents premier entre eux. Si on considère une dent sur chaque engrenage possédant cette propriété, la cinématique de ces engrenages détermine un seul point de croisement pour les deux dents considérées, ce croisement se répétant selon une période de n tours (n entier). Il suffit donc de déterminer, par un choix adéquat du nombre des dents des divers engrenages appartenant au réducteur, un coefficient de réduction entre l'arbre lié au treuil à cordon et l'arbre solidaire du tablier du volet roulant, ce coefficient déterminant également le nombre de tours de l'arbre récepteur nécessaire au déplacement de la course dudit tablier.The gear train 25, 26 forming a reducer comprises a limit switch system in the lower position of the deck. This limit switch system is developed from characteristics of the gears. So the gears 25, 26 forming the reducer have a number of teeth first between them. If we consider a tooth on each gear having this property, the kinematics of these gears determines a single cross point for the two teeth considered, this crossing being repeated according to a period of n turns (n integer). So it is enough to determine, by an adequate choice of the number of teeth various gears belonging to the reducer, a reduction coefficient between the tree linked to the winch at cord and the shaft secured to the roller shutter deck, this coefficient also determining the number of turns of the receiving shaft necessary to move the race of said apron.

Pratiquement, en regard d'une dent considérée appartenant respectivement à chacun des pignons, sur l'un des côtés de l'engrenage un ergot, de fin de course ; ceux ci faisant saillie, ils viendront au contact l'un de l'autre au bout du nombre de tours déterminé provoquant un arrêt du déplacement de l'arbre porte tablier.Practically, next to a tooth considered belonging respectively to each of the gables, on one of the sides of the gear a lug, end of stroke; these protruding they will come into contact with each other after the determined number of laps causing a stop of the movement of the apron door shaft.

Le réducteur peut être également élaboré à partir d'un train épicycloïdal.The reducer can also be produced from a planetary gear.

Le treuil à cordon à commande déportée comporte, au sein de la cavité 8 de la joue 7, d'une part un empilement constitué par la poulie 17, la garniture en élastomère 20, le bâti support 32, l'arbre d'entrée 24, la cloche 31, le ressort 29, le toc d'entraínement 28, la roue 26, qui sont portés par l'axe 11 de la poulie 17, et d'autre part un autre empilement coaxial à l'axe 12 de l'arbre du volet roulant et muni d'un autre engrenage 25 formant le réducteur et solidaire de l'arbre d'enroulement 27 du tablier. Toute ces pièces sont emprisonnées à l'intérieur de la cavité de la joue et sont maintenues en place par l'intermédiaire d'un flasque 34.The remote control cord winch has, within of the cavity 8 of the cheek 7, on the one hand a stack constituted by the pulley 17, the elastomer lining 20, the support frame 32, the input shaft 24, the bell 31, the spring 29, the drive bar 28, the wheel 26, which are carried by the axis 11 of the pulley 17, and other share another stack coaxial with axis 12 of the shaft of the roller shutter and provided with another gear 25 forming the reducer and integral with the winding shaft 27 of the apron. All these parts are trapped inside of the cheek cavity and are held in place by through a flange 34.

Ce flasque 34 est fixé sur le carter par des organes appropriés (vis, rivets...).This flange 34 is fixed to the casing by members suitable (screws, rivets ...).

On positionne dans le carter au niveau des échancrures 15 permettant le passage du cordon et au droit de celles-ci, des galets pour améliorer le guidage du cordon 16 tout autour de la poulie 17.We position in the housing at the notches 15 allowing the passage of the cord and to the right of these, rollers to improve the guiding of the cord 16 while around the pulley 17.

Il demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits et représentés ci-dessus, mais qu'elle en englobe toutes les variantes.Of course, the present invention is not not limited to the embodiments described and shown above, but that it includes all variants.

Claims (4)

Treuil à cordon à commande décalée, comprenant, à l'intérieur d'une cavité (8) d'une joue (7) pour volet roulant, une poulie (17) sur laquelle chemine un cordon (16), un organe d'embrayage et de débrayage (20) ayant fonction de limiteur de couple et un organe réducteur, entre la poulie (17) et un axe d'enroulement (27) du tablier du volet roulant, un organe anti-retour empêchant le poids du tablier de faire tourner l'organe de manoeuvre sans l'action de l'opérateur sur le cordon, un système de frein anti-retour, caractérisé en ce qu'il est muni au sein de la joue (7) de deux réservations de matière servant de paliers pour, d'une part l'axe de rotation (11) de la poulie (17), et d'autre part l'axe de rotation (12) de l'arbre d'enroulement (27) du volet roulant, les axes (11, 12) étant décalés selon deux plans horizontaux distincts et selon deux plans verticaux distincts.Cable winch with offset control, comprising, the interior of a cavity (8) of a cheek (7) for a shutter rolling, a pulley (17) on which runs a cord (16), a clutch and disengaging member (20) having torque limiter function and a reduction unit, between the pulley (17) and a winding pin (27) of the roller shutter deck, a non-return device preventing the weight of the deck to rotate the maneuver without operator action on the cord, a non-return brake system, characterized in that it is provided in the cheek (7) with two reservations of material serving as bearings for, on the one hand the axis of rotation (11) of the pulley (17), and on the other hand the axis of rotation (12) of the winding shaft (27) of the shutter rolling, the axes (11, 12) being offset in two planes distinct horizontal and in two vertical planes separate. Treuil à cordon selon la revendication 1, caractérisé en ce que le système de frein anti-retour est coaxial à l'axe de rotation (11) de la poulie (17) et comporte un arbre d'entrée (24) en prise avec un ressort (29) qui chemine à l'intérieur d'une cloche (31) maintenue en position par l'intermédiaire d'un bâti support (32) immobilisé au sein de la joue (7), le bâti support (32) étant pourvu d'un orifice (33) traversé par une roue (26) coopérant avec le ressort (29).Cord winch according to claim 1, characterized in that the non-return brake system is coaxial with the axis of rotation (11) of the pulley (17) and comprises a input shaft (24) engaged with a spring (29) which runs inside a bell (31) held in position via a support frame (32) immobilized within the cheek (7), the support frame (32) being provided with an orifice (33) through which a wheel (26) passes cooperating with the spring (29). Treuil à cordon selon l'une des revendications 1 ou 2, caractérisé en ce que l'organe réducteur comporte un train d'engrenages (25, 26), le pignon (25) étant en prise avec l'axe d'enroulement (27) du tablier du volet roulant, la roue (26) coopérant avec la poulie (17).Cord winch according to one of claims 1 or 2, characterized in that the reducing member comprises a gear train (25, 26), the pinion (25) being taken with the winding pin (27) of the shutter curtain rolling, the wheel (26) cooperating with the pulley (17). Treuil à cordon selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe d'embrayage et de débrayage comporte d'une part, une garniture en mousse d'élastomère qui est conformée en une bague (20) qui est munie d'une pluralité d'évidements (22), sensiblement oblongs, judicieusement espacés sur sa tranche, et qui sous l'effet d'un certain seuil de couple se déforme élastiquement, la bague (20) comportant en outre un orifice coaxial (23) par rapport à un orifice (18) de la poulie (17), dont les parois latérales disposent d'un profil épicycloïdique et d'autre part, un arbre d'entrée (24) au sein de l'orifice de l'orifice (18), la paroi externe de l'arbre d'entrée (24) étant pourvue d'une succession de bossages dont le profil est similaire à ceux pratiqués au centre (23) de la bague d'élastomère (20), ces profils coopérant entre eux de manière à assurer la transmission du couple de rotation quel que soit son sens.Cord winch according to any one of previous claims, characterized in that the clutch and declutching member comprises on the one hand, an elastomer foam padding which is shaped a ring (20) which is provided with a plurality of recesses (22), substantially oblong, judiciously spaced on its slice, and which under the effect of a certain torque threshold elastically deforms, the ring (20) comprising in addition to a coaxial orifice (23) relative to an orifice (18) of the pulley (17), whose side walls have an epicyclic profile and on the other hand, a input shaft (24) within the orifice of the orifice (18), the outer wall of the input shaft (24) being provided with a succession of bosses whose profile is similar to those made in the center (23) of the ring elastomer (20), these profiles cooperating with one another so as to ensure the transmission of the torque whatever its meaning.
EP19980402046 1997-08-26 1998-08-12 Cord winch with offset drive Expired - Lifetime EP0899414B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710652A FR2767859B1 (en) 1997-08-26 1997-08-26 CORDED WINCH WITH OFFSET CONTROL
FR9710652 1997-08-26

Publications (2)

Publication Number Publication Date
EP0899414A1 true EP0899414A1 (en) 1999-03-03
EP0899414B1 EP0899414B1 (en) 2004-02-11

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EP19980402046 Expired - Lifetime EP0899414B1 (en) 1997-08-26 1998-08-12 Cord winch with offset drive

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EP (1) EP0899414B1 (en)
DE (2) DE69821561T2 (en)
ES (1) ES2127714T3 (en)
FR (1) FR2767859B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201951A1 (en) * 2000-10-27 2002-05-02 Zurfluh Feller Roller shutter with driving device actuated by rotation and coil spring torque limiting means
EP1409828A2 (en) * 2002-03-20 2004-04-21 Rollease, Inc. A roller shade clutch with internal gearing
KR101109136B1 (en) 2009-07-01 2012-02-24 좋은금속(주) Roll blind
CN102765673A (en) * 2012-07-11 2012-11-07 崔晓君 Improved winch brake device and installation method thereof
CN105401870A (en) * 2015-12-17 2016-03-16 郑州名扬窗饰材料有限公司 Self-locking spring head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2167177B1 (en) * 1999-10-21 2003-10-01 Asensio Manuel Sierra CIRCULAR TAPE OR CORD FOR BLINDS AND APPLICATION ON PULLEY WITH NON-SLIP FUND.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673668A1 (en) 1991-03-06 1992-09-11 Bubendorff Richard Device for rotationally driving the shaft for winding and unwinding the shutter of a roller shutter
EP0692605A1 (en) 1994-07-11 1996-01-17 Zurfluh Feller S.A. Disengageable cord winch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673668A1 (en) 1991-03-06 1992-09-11 Bubendorff Richard Device for rotationally driving the shaft for winding and unwinding the shutter of a roller shutter
EP0692605A1 (en) 1994-07-11 1996-01-17 Zurfluh Feller S.A. Disengageable cord winch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201951A1 (en) * 2000-10-27 2002-05-02 Zurfluh Feller Roller shutter with driving device actuated by rotation and coil spring torque limiting means
EP1409828A2 (en) * 2002-03-20 2004-04-21 Rollease, Inc. A roller shade clutch with internal gearing
EP1409828A4 (en) * 2002-03-20 2004-12-15 Rollease Inc A roller shade clutch with internal gearing
KR101109136B1 (en) 2009-07-01 2012-02-24 좋은금속(주) Roll blind
CN102765673A (en) * 2012-07-11 2012-11-07 崔晓君 Improved winch brake device and installation method thereof
CN105401870A (en) * 2015-12-17 2016-03-16 郑州名扬窗饰材料有限公司 Self-locking spring head

Also Published As

Publication number Publication date
DE69821561D1 (en) 2004-03-18
FR2767859B1 (en) 1999-10-29
ES2127714T3 (en) 2004-10-16
ES2127714T1 (en) 1999-05-01
DE899414T1 (en) 1999-08-19
FR2767859A1 (en) 1999-03-05
DE69821561T2 (en) 2004-07-01
EP0899414B1 (en) 2004-02-11

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