EP0692605A1 - Disengageable cord winch - Google Patents

Disengageable cord winch Download PDF

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Publication number
EP0692605A1
EP0692605A1 EP95401634A EP95401634A EP0692605A1 EP 0692605 A1 EP0692605 A1 EP 0692605A1 EP 95401634 A EP95401634 A EP 95401634A EP 95401634 A EP95401634 A EP 95401634A EP 0692605 A1 EP0692605 A1 EP 0692605A1
Authority
EP
European Patent Office
Prior art keywords
winch
shaft
pulley
winch according
integral
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.)
Withdrawn
Application number
EP95401634A
Other languages
German (de)
French (fr)
Inventor
Marc Feller
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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Filing date
Publication date
Application filed by Zurfluh Feller SAS filed Critical Zurfluh Feller SAS
Publication of EP0692605A1 publication Critical patent/EP0692605A1/en
Withdrawn legal-status Critical Current

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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
    • E06B9/80—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
    • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
    • 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
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • 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
    • 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
    • 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 for maneuvering the door leaf shaft of a roller shutter. It relates more particularly to a cord winch system equipped with a brake means on the apron-carrying shaft, an active declutching means when there is too much torque on the shaft, a system limit switch which acts on the winch when the bulkhead is in the low position.
  • Known cord winch systems having a coupling system between the driving part (winch) and the receiving part (support shaft of the roller shutter deck) with ratchets; generally this system works only in one direction and is conditioned by the presence of a resistant torque on the receiving part.
  • the ratchet system authorizes the raising of the apron and leaves the descent of the shutter free, the latter being only braked by the presence of a brake, disposed in a position very set back from the winch part, which considerably increases the overall dimensions.
  • these devices do not include an end-of-travel system, which, thanks to mechanical stops, makes it possible on the one hand to limit the low travel of the deck, and on the other hand, blocks the deck in a state which avoids any intrusion.
  • the present invention therefore aims to overcome these drawbacks by proposing a cord winch having a declutching mechanism active in both directions of rotation, which combines both a limit switch and braking system very integrated in the mechanism of the winch, for a better compactness of the whole.
  • the cord winch is characterized in that it comprises a shaft integral with a pulley, receiving at its periphery a crown, trapping the cord of the winch and being able to disengage with respect to said pulley, the peripheral part of the pulley further comprising a belt provided with inclined walls, these canted surfaces generating areas of friction and sliding for the crown being able to move in a relative movement of rotation relative to said pulley, said shaft being moreover connected by the one of its ends to a gear train forming a reducer between the winch part and the solid part of the shaft of the roller shutter deck, each of the parts being connected together by an irreversibility brake system acting on a solid lining a casing surrounding said winch, said gear train being further provided with a limit switch system for limiting the movement of the table er of the roller shutter in the low position.
  • the cord winch according to the invention essentially comprises a pulley 1 integral in its center with a cylindrical portion 2, stopped in translation at one of its ends, by a casing 3 disposed around said pulley 1.
  • the peripheral part 4 of the latter 1 comprises a belt 5 provided with inclined walls 6, forming a profile in ⁇ whose angle ⁇ relative to the horizontal is between 5 and 45 ° and preferably chosen to be close to 20 °
  • These surfaces 6 on a slope generate friction and sliding zones for a crown 7 which can move in a relative movement of rotation relative to said pulley 1.
  • the crown 7 mainly comprises two flanges 8, 9, generally made of plastic material and obtained by molding, the latter are made integral with a friction ring 10, one of the walls 11 of which is in contact with the surfaces 6 in cant, by a plurality of metal washers 12 with variable flexibility.
  • Said ring 10 is produced from an assembly of cups 13, preferably made of plastic, in particular polypropylene, and the internal wall of which has a profile similar to the cant surface 6 present on the crown 7 of the axial part 2 central.
  • the metal washers 12 are kept outside their elastic deformation zone, within an zone in which they work in a constant and permanent deformation mode whatever the force applied, which makes it possible to prestress the assembly constituted by the flanges 8, 9, the washers 12, the cups 13.
  • the flexible metal washers 12 preferably extend in the form of a blade, each of the ends 14, 15 of which can be curved in order to facilitate their attachment within the flange 8, 9, or of the cup 13.
  • cleaning is carried out on the internal face, a plurality of shoulders capable of receiving and holding in position one of the ends of the washer, while the other end of the washer cooperates at the level of preferentially frustoconical notches arranged on the lateral blanks of the bearing ring.
  • the crown 7 is assembled by juxtaposition of two flanges 8, 9 each provided with a plurality of flexible washers 12 and a rolling ring 10, the assembly being connected by a fixing system 16, which passes right through the flanges 8, 9, such as in particular screws.
  • the crown 7 traps between its two flanges 8, 9 the cord 33 of the winch.
  • the winch thus equipped can be disengaged in both directions of use.
  • the superelevated surfaces 6, as a function of the adhesion coefficients of the materials in contact and the value of the friction cone, are calculated so as to allow the engine torque to pass only over a certain range. Beyond, the contacting surfaces slide relative to each other, creating the disengagement. Thus, if the user requests the winch cord excessively when going up or down, the winch system clips these excessively high torque values, detrimental to the mechanical strength of the device and of the rolling shutter assembly as a whole, and stabilizes around an average value.
  • the winch has on its central cylindrical part 2 an engagement zone 17, generally a straight toothing intended to produce the sun gear 18 of an epicyclic train, forming a reducer between the winch part and the integral part of the shaft 19 of the roller shutter deck.
  • this planetary 18 circulates satellites 20, in particular three, arranged at 120 ° and connected to a common shaft 22 which communicates with the shaft 19 of the deck, these satellites 20 also mesh on a fixed crown 21, peripheral placed in the one of the protective casings surrounding the pulley.
  • a brake system 23 Interposed between the shaft of the deck 19 and the shaft 22 linked to the reducer, a brake system 23 of irreversibility.
  • this irreversibility brake 23 consists of an elastically deformable device depending on the type of stresses, generally torsion, applied to one or the other of its ends.
  • a spiral spring 24 is used, the direction of the helix of which is such that, if the strands 25, 26 terminals become integral with the driving lug 28, cooperating at the end of the shaft 22, in such a way that the number of turns of this spring tends to increase, this will tend to decrease the outside diameter of this spring.
  • the latter can therefore rotate freely and will not come into contact with a lining 29 placed at the level of the diameter change zone of the spring and inside the winch frame.
  • a limit switch system 30 in the lower position of the deck.
  • an epicyclic train is developed whose gears forming the satellites and the planetary have a number of prime teeth between them. If we consider a tooth on each gear having this property, the kinematics of these gears determines a single point of crossing for the two teeth considered, this crossing repeating itself according to a period of n turns (n integer). It therefore suffices to determine by a suitable choice of number of teeth of the various gears belonging to the planetary gear, a reduction coefficient between the shaft 22 linked to the winch and the shaft 19 secured to the roller shutter deck, this coefficient also determining the number of turns of the receiving shaft required to move the stroke of said deck.

Abstract

The winch has a shaft with a pulley (1) which has a ring (7) on its periphery confining the winch cord (33) and able to be declutched from the pulley. The peripheral part of the pulley has a side bracing (5) with inclined walls (6) which are rubbing and sliding zones so that the ring can rotate relative to the pulley. The shaft is connected by one of its ends to a gear train forming a reducer between the winch and the fixed part of the rolling shutter shaft. Each of the parts is connected together by an irreversible breaking system acting on a lining fixed to a casing surrounding the winch. The gear train has an end of travel system which limits the shutter movement in its low position. <IMAGE>

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 actif lors de la présence d'un couple trop important sur l'arbre, d'un système de fin course qui agit sur le treuil lorsque le tablier se trouve en position basse.The present invention relates to a device for maneuvering the door leaf shaft of a roller shutter. It relates more particularly to a cord winch system equipped with a brake means on the apron-carrying shaft, an active declutching means when there is too much torque on the shaft, a system limit switch which acts on the winch when the bulkhead is in the low position.

On connaît des systèmes de treuil à cordon possédant un système d'accouplement entre la partie motrice (treuil) et la partie réceptrice (arbre support du tablier du volet roulant) à cliquets ; généralement ce système ne fonctionne que dans un seul sens et est conditionné par la présence d'un couple résistant sur la partie réceptrice. Ainsi, le système à cliquets autorise la montée du tablier et laisse libre la descente du volet, cette dernière étant seulement freinée par la présence d'un frein, disposé dans une position très en retrait de la partie treuil, ce qui augmente considérablement l'encombrement de l'ensemble. Par ailleurs, ces dispositifs ne comportent pas de système de fin de course, qui grâce à des butées mécaniques, permet d'une part de limiter la course basse du tablier, et d'autre part, bloque le tablier dans un état qui évite toute intrusion.Known cord winch systems are known having a coupling system between the driving part (winch) and the receiving part (support shaft of the roller shutter deck) with ratchets; generally this system works only in one direction and is conditioned by the presence of a resistant torque on the receiving part. Thus, the ratchet system authorizes the raising of the apron and leaves the descent of the shutter free, the latter being only braked by the presence of a brake, disposed in a position very set back from the winch part, which considerably increases the overall dimensions. Furthermore, these devices do not include an end-of-travel system, which, thanks to mechanical stops, makes it possible on the one hand to limit the low travel of the deck, and on the other hand, blocks the deck in a state which avoids any intrusion.

Ces systèmes de treuil connus possèdent des inconvénients : le système de débrayage n'est pas actif dans les deux sens de rotation avec ou non présence d'un couple résistant sur l'arbre ; le système de frein positionné en retrait conduit à un dispositif global encombrant, le tablier peut être soulevé par l'intermédiaire d'une intervention extérieure et être ré enroulé à l'envers.These known winch systems have drawbacks: the declutching system is not active in both directions of rotation with or without the presence of a resistive torque on the shaft; the brake system positioned behind leads to a bulky overall device, the deck can be lifted by means of an external intervention and be rewound upside down.

La présente invention vise donc à pallier ces inconvénients en proposant un treuil à cordon disposant d'un mécanisme de débrayage actif dans les deux sens de rotation, qui allie à la fois un système de fin de course et de freinage très intégré dans le mécanisme du treuil, pour une meilleure compacité de l'ensemble.The present invention therefore aims to overcome these drawbacks by proposing a cord winch having a declutching mechanism active in both directions of rotation, which combines both a limit switch and braking system very integrated in the mechanism of the winch, for a better compactness of the whole.

A cet effet, le treuil à cordon se caractérise en ce qu'il comprend un arbre solidaire d'une poulie, recevant à sa périphérie une couronne, emprisonnant le cordon du treuil et pouvant débrayer par rapport à ladite poulie, la partie périphérique de la poulie comportant en outre une ceinture pourvue de parois inclinées, ces surfaces en dévers générant des zones de frottement et de glissement pour la couronne pouvant se déplacer selon un mouvement relatif de rotation par rapport à ladite poulie, ledit arbre étant par ailleurs connecté par l'une de ses extrémités à un train d'engrenages formant réducteur entre la partie treuil et la partie solidaire de l'arbre du tablier du volet roulant, chacune des parties étant reliée entre elles par un système de frein d'irréversibilité agissant sur une garniture solidaire d'un carter entourant ledit treuil, ledit train d'engrenages étant en outre muni d'un système de fin de course permettant de limiter le mouvement du tablier du volet roulant en position basse.To this end, the cord winch is characterized in that it comprises a shaft integral with a pulley, receiving at its periphery a crown, trapping the cord of the winch and being able to disengage with respect to said pulley, the peripheral part of the pulley further comprising a belt provided with inclined walls, these canted surfaces generating areas of friction and sliding for the crown being able to move in a relative movement of rotation relative to said pulley, said shaft being moreover connected by the one of its ends to a gear train forming a reducer between the winch part and the solid part of the shaft of the roller shutter deck, each of the parts being connected together by an irreversibility brake system acting on a solid lining a casing surrounding said winch, said gear train being further provided with a limit switch system for limiting the movement of the table er of the roller shutter in the low position.

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 en coupe et en élévation frontale du treuil à cordon selon l'invention ;
  • la figure 2 est une vue en coupe à une plus grande échelle du système de débrayage ;
  • la figure 3 est une vue en coupe et en élévation latérale du réducteur ;
  • la figure 4 est une vue en coupe et en élévation latérale du système de fin de course et du système de frein d'irréversibilité.
Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the accompanying drawings which illustrate an exemplary embodiment thereof without any limiting character. In the figures:
  • Figure 1 is a sectional view in front elevation of the cord winch according to the invention;
  • Figure 2 is a sectional view on a larger scale of the clutch system;
  • Figure 3 is a sectional view in side elevation of the reducer;
  • Figure 4 is a sectional view in side elevation of the limit switch system and the irreversibility brake system.

Selon un mode préféré de réalisation, le treuil à cordon selon l'invention comporte essentiellement une poulie 1 solidaire en son centre d'une portion cylindrique 2, stoppée en translation à l'une de ses extrémités, par un carter 3 disposé autour de ladite poulie 1.According to a preferred embodiment, the cord winch according to the invention essentially comprises a pulley 1 integral in its center with a cylindrical portion 2, stopped in translation at one of its ends, by a casing 3 disposed around said pulley 1.

La partie périphérique 4 de cette dernière 1 comporte une ceinture 5 pourvue de parois 6 inclinées, formant un profil en Δ dont l'angle α par rapport à l'horizontale est compris entre 5 et 45° et préférentiellement choisi voisin de 20° Ces surfaces 6 en dévers génèrent des zones de frottement et de glissement pour une couronne 7 pouvant se déplacer selon un mouvement relatif de rotation par rapport à ladite poulie 1.The peripheral part 4 of the latter 1 comprises a belt 5 provided with inclined walls 6, forming a profile in Δ whose angle α relative to the horizontal is between 5 and 45 ° and preferably chosen to be close to 20 ° These surfaces 6 on a slope generate friction and sliding zones for a crown 7 which can move in a relative movement of rotation relative to said pulley 1.

La couronne 7 comprend principalement deux flasques 8, 9, généralement constitués en matière plastique et obtenus par moulage, ces derniers sont rendus solidaires à une bague de frottement 10, dont une des parois 11 est au contact des surfaces 6 en dévers, par une pluralité de rondelles 12 métalliques à flexibilité variable.The crown 7 mainly comprises two flanges 8, 9, generally made of plastic material and obtained by molding, the latter are made integral with a friction ring 10, one of the walls 11 of which is in contact with the surfaces 6 in cant, by a plurality of metal washers 12 with variable flexibility.

Ladite bague 10 est élaborée à partir d'un assemblage de coupelles 13, préférentiellement réalisées en matière plastique, notamment du polypropylène, et dont la paroi interne possède un profil similaire à la surface en dévers 6 présente sur la couronne 7 de la partie axiale 2 centrale.Said ring 10 is produced from an assembly of cups 13, preferably made of plastic, in particular polypropylene, and the internal wall of which has a profile similar to the cant surface 6 present on the crown 7 of the axial part 2 central.

Les rondelles 12 métalliques sont maintenues en dehors de leur zone de déformation élastique, au sein d'une zone dans laquelle elles travaillent selon un mode de déformation constante et permanente quelle que soit la force appliquée, ce qui permet de précontraindre l'assemblage constitué par les flasques 8, 9, les rondelles 12, les coupelles 13.The metal washers 12 are kept outside their elastic deformation zone, within an zone in which they work in a constant and permanent deformation mode whatever the force applied, which makes it possible to prestress the assembly constituted by the flanges 8, 9, the washers 12, the cups 13.

Les rondelles 12 métalliques flexibles s'étendent préférentiellement sous la forme de lame, dont chacune des extrémités 14, 15 peut être recourbée afin de faciliter leur accrochage au sein du flasque 8, 9, ou de la coupelle 13. Ainsi dans le flasque on ménage sur la face interne une pluralité d'épaulements aptes à recevoir et à maintenir en position l'une des extrémités de la rondelle, tandis que l'autre extrémité de la rondelle coopère au niveau d'échancrures préférentiellement tronconiques disposées sur les flans latéraux de la bague de roulement.The flexible metal washers 12 preferably extend in the form of a blade, each of the ends 14, 15 of which can be curved in order to facilitate their attachment within the flange 8, 9, or of the cup 13. Thus in the flange, cleaning is carried out on the internal face, a plurality of shoulders capable of receiving and holding in position one of the ends of the washer, while the other end of the washer cooperates at the level of preferentially frustoconical notches arranged on the lateral blanks of the bearing ring.

La couronne 7 est assemblée par juxtaposition de deux flasques 8, 9 munis chacun d'une pluralité de rondelles flexibles 12 et d'une bague de roulement 10, l'ensemble étant reliés par un système 16 de fixation, qui traverse de part en part les flasques 8, 9, tel que notamment des vis.The crown 7 is assembled by juxtaposition of two flanges 8, 9 each provided with a plurality of flexible washers 12 and a rolling ring 10, the assembly being connected by a fixing system 16, which passes right through the flanges 8, 9, such as in particular screws.

La couronne 7 emprisonne entre ses deux flasques 8, 9 le cordon 33 du treuil. Le treuil ainsi équipé est débrayable dans les deux sens d'utilisation.The crown 7 traps between its two flanges 8, 9 the cord 33 of the winch. The winch thus equipped can be disengaged in both directions of use.

Les surfaces en dévers 6, en fonction des coefficients d'adhérence des matériaux en contact et de la valeur du cône de frottement, sont calculés de manière à ne laisser passer le couple moteur que sur une certaine plage. Au delà, les surfaces en contact glissent l'une par rapport à l'autre, créant le débrayage. Ainsi, si l'utilisateur sollicite le cordon du treuil exagérément à la montée ou à la descente, le système de treuil 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.The superelevated surfaces 6, as a function of the adhesion coefficients of the materials in contact and the value of the friction cone, are calculated so as to allow the engine torque to pass only over a certain range. Beyond, the contacting surfaces slide relative to each other, creating the disengagement. Thus, if the user requests the winch cord excessively when going up or down, the winch system clips these excessively high torque values, detrimental to the mechanical strength of the device and of the rolling shutter assembly as a whole, and stabilizes around an average value.

Selon une autre caractéristique de l'invention, le treuil dispose sur sa partie cylindrique centrale 2 d'une zone d'engrènement 17, généralement une denture droite destinée à réaliser le planétaire 18 d'un train épicycloïdal, formant réducteur entre la partie treuil et la partie solidaire de l'arbre 19 du tablier du volet roulant.According to another characteristic of the invention, the winch has on its central cylindrical part 2 an engagement zone 17, generally a straight toothing intended to produce the sun gear 18 of an epicyclic train, forming a reducer between the winch part and the integral part of the shaft 19 of the roller shutter deck.

Autour de ce planétaire 18 circule des satellites 20, notamment trois, disposés à 120° et reliés à un arbre 22 commun qui communique à l'arbre 19 du tablier, ces satellites 20 engrènent également sur une couronne 21 fixe, périphérique placée dans l'un des carters de protection entourant la poulie.Around this planetary 18 circulates satellites 20, in particular three, arranged at 120 ° and connected to a common shaft 22 which communicates with the shaft 19 of the deck, these satellites 20 also mesh on a fixed crown 21, peripheral placed in the one of the protective casings surrounding the pulley.

On interpose entre l'arbre du tablier 19 et l'arbre 22 lié au réducteur, un système de frein 23 d'irréversibilité.Interposed between the shaft of the deck 19 and the shaft 22 linked to the reducer, a brake system 23 of irreversibility.

Selon un mode préféré de réalisation ce frein d'irréversibilité 23 est constitué d'un dispositif déformable élastiquement en fonction du type de sollicitations, généralement de la torsion, appliqués à l'une ou l'autre de ses extrémités. Préférentiellement, on utilise un ressort 24 à spirale, dont le sens de l'hélice de ce ressort est tel que, si les brins 25, 26 terminaux deviennent solidaires du toc d'entraînement 28, coopérant au niveau de l'extrémité de l'arbre 22, d'une manière telle que le nombre de spire de ce ressort a tendance à augmenter, ceci tendra à faire diminuer le diamètre extérieur de ce ressort. Ce dernier pourra donc tourner librement et ne viendra pas au contact d'une garniture 29 placée au niveau de la zone de changement de diamètre du ressort et à l'intérieur du bâti du treuil.According to a preferred embodiment, this irreversibility brake 23 consists of an elastically deformable device depending on the type of stresses, generally torsion, applied to one or the other of its ends. Preferably, a spiral spring 24 is used, the direction of the helix of which is such that, if the strands 25, 26 terminals become integral with the driving lug 28, cooperating at the end of the shaft 22, in such a way that the number of turns of this spring tends to increase, this will tend to decrease the outside diameter of this spring. The latter can therefore rotate freely and will not come into contact with a lining 29 placed at the level of the diameter change zone of the spring and inside the winch frame.

Par contre, si sous l'effet de la charge, le toc 27 a tendance à tourner de manière à faire diminuer le nombre de spire, cette réduction se traduit alors par une augmentation du diamètre de ce ressort, qui vient alors se bloquer au contact de ladite garniture 29.On the other hand, if under the effect of the load, the toc 27 tends to rotate so as to decrease the number of turns, this reduction then results in an increase in the diameter of this spring, which then comes to block on contact of said lining 29.

Selon une autre caractéristique avantageuse de l'invention, elle comporte un système de fin de course 30 en position basse du tablier. A cet effet, on élabore un train épicycloïdal dont les engrenages formant les satellites et le planétaire possèdent un nombre de dent 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 de nombre de dents des divers engrenages appartenant au train épicycloïdal, un coefficient de réduction entre l'arbre 22 lié au treuil et l'arbre 19 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.According to another advantageous characteristic of the invention, it comprises a limit switch system 30 in the lower position of the deck. To this end, an epicyclic train is developed whose gears forming the satellites and the planetary have a number of prime teeth between them. If we consider a tooth on each gear having this property, the kinematics of these gears determines a single point of crossing for the two teeth considered, this crossing repeating itself according to a period of n turns (n integer). It therefore suffices to determine by a suitable choice of number of teeth of the various gears belonging to the planetary gear, a reduction coefficient between the shaft 22 linked to the winch and the shaft 19 secured to the roller shutter deck, this coefficient also determining the number of turns of the receiving shaft required to move the stroke of said deck.

Pratiquement en regard de chacune d'une dent considérée appartenant respectivement au satellite 20 et au planétaire 18, sur l'un des côtés de l'engrenage un ergot 31, 32 de fin de course ; ceux ci faisant saillis, 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 opposite each of a tooth considered belonging respectively to the satellite 20 and to the sun gear 18, on one of the sides of the gear a pin 31, 32 of the end of travel; these protruding, they will come into contact with each other after the number of determined turns causing a stop of the movement of the door leaf shaft.

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.It remains to be understood that the present invention is not limited to the exemplary embodiments described and shown above, but that it encompasses all variants thereof.

Claims (10)

1 - Treuil à cordon, caractérisé en ce qu'il comprend un arbre solidaire d'une poulie (1), recevant à sa périphérie une couronne (7), emprisonnant le cordon (33) du treuil et pouvant débrayer par rapport à ladite poulie (1), la partie périphérique de la poulie (1) comportant en outre une ceinture (5) pourvue de parois (6) inclinées, ces surfaces en dévers générant des zones de frottement et de glissement pour la couronne (7) pouvant se déplacer selon un mouvement relatif de rotation par rapport à ladite poulie (1), ledit arbre étant par ailleurs connecté par l'une de ses extrémités à un train d'engrenages formant réducteur entre la partie treuil et la partie solidaire de l'arbre (19) du tablier du volet roulant, chacune des parties étant reliée entre elles par un système de frein d'irréversibilité (23) agissant sur une garniture (29) solidaire d'un carter (3) entourant ledit treuil, ledit train d'engrenages étant en outre muni d'un système de fin de course (30) permettant de limiter le mouvement du tablier du volet roulant en position basse. 1 - Cord winch, characterized in that it comprises a shaft secured to a pulley (1), receiving at its periphery a crown (7), trapping the cord (33) of the winch and being able to disengage relative to said pulley (1), the peripheral part of the pulley (1) further comprising a belt (5) provided with inclined walls (6), these canted surfaces generating friction and sliding zones for the crown (7) being able to move according to a relative rotational movement with respect to said pulley (1), said shaft being moreover connected by one of its ends to a gear train forming a reducer between the winch part and the part integral with the shaft (19 ) of the roller shutter deck, each of the parts being connected together by an irreversibility brake system (23) acting on a lining (29) integral with a casing (3) surrounding said winch, said gear train being additionally fitted with a limit switch system (30) for limiting the movement of the roller shutter deck in the low position. 2 - Treuil à cordon selon la revendication 1, caractérisé en ce que les parois (6) inclinées, forment un profil en Δ dont l'angle α par rapport à l'horizontale est compris entre 5 et 45° et préférentiellement choisi voisin de 20°. 2 - Cord winch according to claim 1, characterized in that the inclined walls (6) form a profile in Δ whose angle α relative to the horizontal is between 5 and 45 ° and preferably chosen to be close to 20 °. 3 - Treuil selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la couronne (7) comprend principalement deux flasques (8, 9), généralement constitués en matière plastique et obtenus par moulage, ces derniers étant rendus solidaires à une bague de frottement (10), dont une des parois est au contact des surfaces (6) en dévers, par une pluralité de rondelles (12) métalliques à flexibilité variable. 3 - Winch according to any one of claims 1 or 2, characterized in that the crown (7) mainly comprises two flanges (8, 9), generally made of plastic and obtained by molding, the latter being made integral with a friction ring (10), one of the walls of which is in contact with the surfaces (6) in cant, by a plurality of metal washers (12) with variable flexibility. 4 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague (10) comprend un assemblage de coupelles (13), préférentiellement réalisées en matière plastique, notamment du polypropylène, et dont la paroi interne possède un profil similaire à la surface (6) en dévers présente sur la ceinture (5) de la partie axiale (2) centrale. 4 - Winch according to any one of the preceding claims, characterized in that the ring (10) comprises an assembly of cups (13), preferably made of plastic, in particular polypropylene, and the internal wall of which has a profile similar to the cant surface (6) present on the belt (5) of the central axial part (2). 5 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que les rondelles (12) métalliques sont maintenues en dehors de leur zone de déformation élastique, au sein d'une zone dans laquelle elles travaillent selon un mode de déformation constante et permanente quelle que soit la force appliquée, ce qui permet de précontraindre l'assemblage constitué par les flasques (8, 9), les rondelles (12), les coupelles (13). 5 - Winch according to any one of the preceding claims, characterized in that the metal washers (12) are kept outside their elastic deformation zone, within a zone in which they work in a constant deformation mode and permanent whatever the force applied, which makes it possible to prestress the assembly constituted by the flanges (8, 9), the washers (12), the cups (13). 6 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que les rondelles (12) métalliques flexibles s'étendent préférentiellement sous la forme de lame, dont chacune des extrémités (14, 15) est recourbée afin de faciliter leur accrochage au sein du flasque (8, 9), ou de la coupelle (13). 6 - Winch according to any one of the preceding claims, characterized in that the flexible metal washers (12) preferably extend in the form of a blade, each of the ends (14, 15) of which is curved in order to facilitate their attachment to the within the flange (8, 9), or the cup (13). 7 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que la couronne (7) est assemblée par juxtaposition de deux flasques (8, 9) munis chacun d'une pluralité de rondelles (12) flexibles et d'une bague (10) de roulement, l'ensemble étant reliés par un système de fixation (16), qui traverse de part en part les flasques (8, 9). 7 - Winch according to any one of the preceding claims, characterized in that the crown (7) is assembled by juxtaposition of two flanges (8, 9) each provided with a plurality of flexible washers (12) and a ring (10) bearing, the assembly being connected by a fixing system (16), which passes right through the flanges (8, 9). 8 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que le treuil dispose de sa partie cylindrique (2) centrale d'une zone d'engrènement (17) , généralement une denture droite destinée à réaliser le planétaire (18) d'un train épicycloïdal, formant réducteur entre la partie treuil et la partie solidaire de l'arbre (19) du tablier du volet roulant. 8 - Winch according to any one of the preceding claims, characterized in that the winch has its cylindrical part (2) central to an engagement zone (17), generally a straight toothing intended to produce the sun gear (18) of a planetary gear train, forming a reducer between the winch part and the integral part of the shaft (19) of the roller shutter deck. 9 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de frein (23) est constitué d'un dispositif déformable élastiquement en fonction du type de sollicitations, tel que notamment un ressort (24) à spirale, dont les brins terminaux (25, 26) sont solidaires de tocs (27, 28) d'entraînement, coopérant au niveau de chaque extrémité d'arbre. 9 - Winch according to any one of the preceding claims, characterized in that the brake system (23) consists of an elastically deformable device depending on the type of stresses, such as in particular a spiral spring (24), of which the terminal strands (25, 26) are integral with drive pins (27, 28), cooperating at each end of the shaft. 10 - Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de fin de course (30) en position basse du tablier comporte, en regard de chacune d'une des dents appartenant respectivement à un satellite (20) et à un planétaire (18) du train d'engrenages formant le réducteur, un ergot (31, 32) de fin de course faisant saillie de manière à venir au contact l'un de l'autre, au bout d'un nombre de tours déterminé, provoquant un arrêt du déplacement de l'arbre (19) porte tablier. 10 - Winch according to any one of the preceding claims, characterized in that the limit switch system (30) in the lower position of the deck comprises, opposite each of one of the teeth belonging respectively to a satellite (20) and to a sun gear (18) of the gear train forming the reduction gear, an end-of-travel lug (31, 32) projecting so as to come into contact with one another, after a number of turns determined, causing a stop of the movement of the shaft (19) door curtain.
EP95401634A 1994-07-11 1995-07-06 Disengageable cord winch Withdrawn EP0692605A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9408571 1994-07-11
FR9408571A FR2722183B1 (en) 1994-07-11 1994-07-11 RELEASABLE CORD WINCH

Publications (1)

Publication Number Publication Date
EP0692605A1 true EP0692605A1 (en) 1996-01-17

Family

ID=9465247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401634A Withdrawn EP0692605A1 (en) 1994-07-11 1995-07-06 Disengageable cord winch

Country Status (4)

Country Link
EP (1) EP0692605A1 (en)
DE (1) DE692605T1 (en)
ES (1) ES2081795T1 (en)
FR (1) FR2722183B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889193A1 (en) * 1997-07-02 1999-01-07 Zurfluh Feller Cord winch with a coupling and decoupling device for driving the roller of a roller door or blind
EP0899414A1 (en) 1997-08-26 1999-03-03 Zurfluh-Feller S.A. Cord winch with offset drive
EP0940553A2 (en) * 1998-03-06 1999-09-08 MOTTURA S.p.A. Device for actuating a roller blind
FR2785015A1 (en) * 1998-10-26 2000-04-28 Bubendorff Sa CORD OR THE LIKE DRIVE DEVICE FOR ROLLER SHUTTER
FR2811013A1 (en) * 2000-07-03 2002-01-04 Bubendorff Volet Roulant MANUAL TYPE DRIVE DEVICE FOR ROLLING SHUTTER
EP1637693A1 (en) * 2004-09-21 2006-03-22 BUBENDORFF Société Anonyme Device for driving a roller of a roller shutter
CN111561553A (en) * 2020-04-26 2020-08-21 北京航天福道高技术股份有限公司 Composite construction reel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463846A1 (en) * 1979-08-24 1981-02-27 Lamelcolor Sa FOLDING BLIND
EP0096664A2 (en) * 1982-06-09 1983-12-21 Elvana Piemonte A roller shutter winding lifting friction device
EP0163927A2 (en) * 1984-06-04 1985-12-11 Emil Schenker AG Drive for the raising shaft of a blind
DE8526209U1 (en) * 1984-11-29 1986-02-06 E. Kindt AG, vormals Hans Kiefer AG, Otelfingen Drive device for a blind for sun and / or weather protection
EP0211660A2 (en) * 1985-08-07 1987-02-25 The Standard Oil Company Rolling shutter system
FR2626039A1 (en) * 1988-01-18 1989-07-21 Simu Soc Ind Metal Usine Winch with end stop mechanism for manual operation of blinds and other closures which can be rolled up

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463846A1 (en) * 1979-08-24 1981-02-27 Lamelcolor Sa FOLDING BLIND
EP0096664A2 (en) * 1982-06-09 1983-12-21 Elvana Piemonte A roller shutter winding lifting friction device
EP0163927A2 (en) * 1984-06-04 1985-12-11 Emil Schenker AG Drive for the raising shaft of a blind
DE8526209U1 (en) * 1984-11-29 1986-02-06 E. Kindt AG, vormals Hans Kiefer AG, Otelfingen Drive device for a blind for sun and / or weather protection
EP0211660A2 (en) * 1985-08-07 1987-02-25 The Standard Oil Company Rolling shutter system
FR2626039A1 (en) * 1988-01-18 1989-07-21 Simu Soc Ind Metal Usine Winch with end stop mechanism for manual operation of blinds and other closures which can be rolled up

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889193A1 (en) * 1997-07-02 1999-01-07 Zurfluh Feller Cord winch with a coupling and decoupling device for driving the roller of a roller door or blind
FR2765618A1 (en) * 1997-07-02 1999-01-08 Feller Zurfluh CORD WINCH COMPRISING A CLUTCH / DISENGAGING MEMBER FOR MANEUVERING THE APRON HOLDER SHAFT OF A ROLLING SHUTTER
EP0899414A1 (en) 1997-08-26 1999-03-03 Zurfluh-Feller S.A. Cord winch with offset drive
FR2767859A1 (en) * 1997-08-26 1999-03-05 Zurfluh Feller CORDED WINCH WITH OFFSET CONTROL
EP0940553A2 (en) * 1998-03-06 1999-09-08 MOTTURA S.p.A. Device for actuating a roller blind
EP0940553A3 (en) * 1998-03-06 2001-08-01 MOTTURA S.p.A. Device for actuating a roller blind
EP0997606A1 (en) * 1998-10-26 2000-05-03 Bubendorff Volet Roulant Société Anonyme Cord drive or similar for a roller shutter
FR2785015A1 (en) * 1998-10-26 2000-04-28 Bubendorff Sa CORD OR THE LIKE DRIVE DEVICE FOR ROLLER SHUTTER
FR2811013A1 (en) * 2000-07-03 2002-01-04 Bubendorff Volet Roulant MANUAL TYPE DRIVE DEVICE FOR ROLLING SHUTTER
EP1170459A1 (en) * 2000-07-03 2002-01-09 Bubendorff Volet Roulant Société Anonyme Manual drive for roller blind
EP1637693A1 (en) * 2004-09-21 2006-03-22 BUBENDORFF Société Anonyme Device for driving a roller of a roller shutter
FR2875531A1 (en) * 2004-09-21 2006-03-24 Bubendorff Sa TRAINING DEVICE FOR ROLLING SHUTTER APRON.
CN111561553A (en) * 2020-04-26 2020-08-21 北京航天福道高技术股份有限公司 Composite construction reel
CN111561553B (en) * 2020-04-26 2023-12-19 北京航天福道高技术股份有限公司 Composite construction reel

Also Published As

Publication number Publication date
ES2081795T1 (en) 1996-03-16
DE692605T1 (en) 1996-09-12
FR2722183B1 (en) 1996-09-13
FR2722183A1 (en) 1996-01-12

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