EP0889193A1 - Cord winch with a coupling and decoupling device for driving the roller of a roller door or blind - Google Patents

Cord winch with a coupling and decoupling device for driving the roller of a roller door or blind Download PDF

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Publication number
EP0889193A1
EP0889193A1 EP98401644A EP98401644A EP0889193A1 EP 0889193 A1 EP0889193 A1 EP 0889193A1 EP 98401644 A EP98401644 A EP 98401644A EP 98401644 A EP98401644 A EP 98401644A EP 0889193 A1 EP0889193 A1 EP 0889193A1
Authority
EP
European Patent Office
Prior art keywords
cord
pulley
winch
ring
winch according
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
EP98401644A
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German (de)
French (fr)
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EP0889193B1 (en
Inventor
Alain Jeunot
Thierry Steinbauer
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Zurfluh Feller SAS
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Zurfluh Feller SAS
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Publication of EP0889193A1 publication Critical patent/EP0889193A1/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 door shaft of a roller shutter. It relates more particularly to a system cord winch fitted with a brake on the shaft door apron, 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 position low.
  • cord winch systems having a coupling system between the driving part (winch) and the receiving part (support shaft of the apron of the roller shutter) with ratchets.
  • the wheel system free installed between the winch and the shaft allows to drive the tree in the upward direction, but not downhill. It is the weight of the apron which forces the tree to rotate in the direction of descent.
  • the operator operates a cord, in the direction of lowering, to release a spring positioned in a Bell.
  • the lowering of the flap is only braked by the presence of a brake, placed in a position very withdrawal of the winch part, which increases considerably the overall size.
  • these devices do not include a limit switch, which thanks to mechanical stops, allows to limit the lower stroke of the apron.
  • a limit switch which thanks to mechanical stops, allows to limit the lower stroke of the apron.
  • this is caused by the absence of a freewheel on the tree, which allows the low point to apply a torque in the direction of descent on the tree and so to push on the apron behind the scenes, thanks to the automatic locking system.
  • corded winches equipped both a clutch and disengage system, a limit switch and braking system integrated.
  • these winches have the major drawback of have a brake system whose intensity and endurance are very limited in time considering mainly that braking is provided by a single spring.
  • the clutch / declutch function has the disadvantage to use a mobile pulley system in rotation on a conical bearing, the sliding being caused by a stressing of elastic parts, the reproducibility of the setting is not constant in the time.
  • the present invention therefore aims to overcome these disadvantages of offering a cord winch with a declutching mechanism active in both directions of rotation, which combines both a limit switch system and braking very integrated into the winch mechanism, for a better compactness of the whole.
  • the cord winch comprising a housing receiving a reducing organ between the winch part and the integral with the shaft of the roller shutter deck, the gear train forming the reducing member being fitted with a limit switch system
  • the housing includes a pulley actuated in rotation by a cord, and integral with the reducer by a input shaft coaxial with said pulley, said shaft of entry being surrounded by a lining conforming with the latter a clutch / declutch system, the assembly being trapped inside said pulley, this last and the reducer cooperating with the part secured to the apron shaft, via a anti-reverse braking system comprising at least two elastically deformable members, mounted in tandem.
  • the cord winch according to the invention essentially comprises a casing 1 forming the actual case of the latter.
  • This one comprises two concentric cavities 2, 3; the first 3 has sufficient internal diameter and depth to allow the passage of a movable part 4, forming pulley, around which the cord 5 circulates, reducer 6 and of the clutch and disengage system 7, the other cavity 2 receives the system of braking 8 and protrudes from the first 2 and has a substantially cylindrical shape so that cooperate with the winding tube 9 of the shutter deck rolling.
  • the ring 15 includes a plurality of recesses 23, noticeably oblong, judiciously spaced on its slice, and which under the effect of a certain torque threshold elastically deforms.
  • the ring 15 has a coaxial orifice 24 relative to the orifices 19 of the input half-wheels 10, 14 and whose side walls have a profile epicyclic.
  • the other declutching / clutching member is constituted by an input shaft 25.
  • This input shaft 25 has on one of its front faces 26 of a connection means produced in particular in the form of a fluted part or tooth which cooperates on a planetary level 27 belonging to an epicyclic train forming the reducer 6, the other front face 28 has a shoulder 29 whose dimensions correspond to the diameter of the central orifice 19 of one of the input half-wheels 10 or 14.
  • the outer wall 30 of the input shaft 25 is provided a succession of bosses 31 whose profile is similar to those practiced in the center of the ring elastomer 15, its profiles cooperating with each other so as to ensure the transmission of the torque whatever its meaning.
  • the operation of the clutch / disengage member is the following :
  • the cavities 23 present in the thickness of the ring 15 in elastomer retain their geometry and do not not distort.
  • the ring 15 does not shear between its side wall 21 which is fixed in the recess 16 used in the two input half-wheels 10 and 14 and its internal side wall which cooperates at the level of the shaft input 25.
  • the rotational movement imparted by the cord 5 is transmitted to the input shaft 25 then, by through the reducer 6, to the winding tube 9 of the roller shutter deck.
  • the cavities 23 deform under the action of the couple and induce a shear between the lateral face 21 of the ring 15 which is fixed and that 30 which is located the interface with the input shaft 25.
  • 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 25 and the ring 15 in elastomer.
  • the movement printed on the winch is therefore, during the entire phase of sliding between the elastomer ring and input shaft, removed up to what the respective side faces cooperate with new 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.
  • Pulley 4 formed by the assembly of two half-wheels Input 10-14 trapping input shaft 25 and the elastomer ring 15, is positioned inside the large housing cavity having taken take care to couple the sun gear 27 input shaft 25 and satellites 32, 33, 34, number three and at 120 °, which are held in position via a planet carrier 35 which is connected in turn through a brake system 8, which will described below, at the winding axis 9 of the drum of the roller shutter deck.
  • the casing 1 has two notches 36, 37 placed right through a median axis, allowing the passage of the winch cord 5.
  • the main cavity 2 of the casing 1 has at the bottom and on its side wall internal, of a crown 38 with straight teeth on which meshes satellites 32, 33, 34.
  • this brake 8 of irreversibility consists of a device 39 elastically deformable depending on the type of stresses, generally torsion, applied to either end.
  • the braking torque is proportional to the diameter and in order to increase the braking intensity, while ensuring the longevity of the brake system 8, at least two spiral springs are used, mounted in tandem, whose direction of the helix of these springs is such that if the terminal strands become integral with the training dogs, cooperating respectively at the level of the end of the shaft linked to the winding axis 9 of the roller shutter curtain and at the level of the planet carrier 35, thanks to an entry knock, which is connected to the half-wheels input, so that the number of turns of these springs tend to increase, this will tend to decrease the outside diameter of these springs.
  • the planetary reduction gearbox includes an end of stroke in the lower position of the bulkhead.
  • we develops an epicyclic train whose gears forming satellites 32, 33, 34 and planetary 27 have a number of prime teeth between them. If we consider a tooth on each gear with this property, the kinematics of these gears determines a single point of crossing for the two teeth considered, this crossing repeating according to a period of n turns (n integer). he therefore suffices to determine by an adequate choice of number of teeth of the various gears belonging to the train epicyclic, a reduction coefficient between the tree linked to the winch and the shaft secured to the shutter deck rolling, this coefficient also determining the number rotations of the receiving shaft necessary for movement of the race of said apron.
  • the object winch of the invention has a system clutch / disengage, a limit switch system, a brake system and a reduction system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • General Details Of Gearings (AREA)
  • Mechanical Operated Clutches (AREA)
  • Braking Arrangements (AREA)

Abstract

The winding drum has a housing (1) for a gear down mechanism (6) between the winding drum and the part attached to the axle of the roller blind. The gear train forming the gear down mechanism has a limit switch. The housing has a pulley (4) activated by a cord pull (5). The pulley is attached to the gear down mechanism (6) by a co-axial primary shaft (25) which is surrounded by a clutch mechanism which is housed within the pulley. The pulley and the gear down mechanism are joined to the section attached to the axle by a braking system with a pair of elastically deformable springs (39). The brake lining is made of an elastomeric foam (15).

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 course qui agit sur le treuil lorsque le tablier se trouve en position basse.The present invention relates to a device allowing the operation of the apron door shaft of a roller shutter. It relates more particularly to a system cord winch fitted with a brake on the shaft door apron, 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 position low.

On connaít 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, le système roue libre installé entre le treuil et l'arbre permet d'entraíner l'arbre dans le sens de la montée, mais pas dans le sens de la descente. C'est le poids du tablier qui force l'arbre à tourner dans le sens de la descente. Afin que l'arbre puisse tourner dans ce sens, il faut que l'opérateur actionne un cordon, dans le sens de la descente, pour libérer un ressort positionné dans une cloche. La descente du volet est 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 de limiter la course basse du tablier. En ce qui concerne le blocage du tablier dans une position qui évite toute intrusion, ceci est provoqué par l'absence de roue libre sur l'arbre, ce qui permet au point bas d'appliquer un couple dans le sens de la descente sur l'arbre et ainsi de pousser sur le tablier dans les coulisses, grâce au système de verrou automatique.There are known cord winch systems having a coupling system between the driving part (winch) and the receiving part (support shaft of the apron of the roller shutter) with ratchets. Generally the wheel system free installed between the winch and the shaft allows to drive the tree in the upward direction, but not downhill. It is the weight of the apron which forces the tree to rotate in the direction of descent. In order for the tree to rotate in this direction, it is necessary that the operator operates a cord, in the direction of lowering, to release a spring positioned in a Bell. The lowering of the flap is only braked by the presence of a brake, placed in a position very withdrawal of the winch part, which increases considerably the overall size. Through elsewhere, these devices do not include a limit switch, which thanks to mechanical stops, allows to limit the lower stroke of the apron. In regards to locking the apron in a position which prevents any intrusion, this is caused by the absence of a freewheel on the tree, which allows the low point to apply a torque in the direction of descent on the tree and so to push on the apron behind the scenes, thanks to the automatic locking system.

On connaít particulièrement des treuils à cordon équipés à la fois d'un système d'embrayage et de débrayage, d'un système de fin de course et d'un système de freinage intégrés. Or, ces treuils ont l'inconvénient majeur de disposer d'un système de frein dont l'intensité et l'endurance sont très limitées dans le temps compte tenu principalement que le freinage est assuré par un seul ressort. La fonction embrayage/débrayage a le désavantage d'utiliser un système de poulie mobile en rotation sur une portée conique, le glissement étant provoqué par une mise en contrainte de parties élastiques dont la reproductibilité du réglage n'est pas constant dans le temps.We particularly know of corded winches equipped both a clutch and disengage system, a limit switch and braking system integrated. However, these winches have the major drawback of have a brake system whose intensity and endurance are very limited in time considering mainly that braking is provided by a single spring. The clutch / declutch function has the disadvantage to use a mobile pulley system in rotation on a conical bearing, the sliding being caused by a stressing of elastic parts, the reproducibility of the setting is not constant in the time.

Tous ces systèmes de treuil connus de l'art antérieur possèdent donc les inconvénients suivants :

  • 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 seuil de déclenchement est variable dans le temps ;
  • le système de frein positionné en retrait conduit à un dispositif global encombrant, et l'intensité et l'endurance du freinage ne sont pas constantes ;
  • le tablier peut être soulevé par l'intermédiaire d'une intervention extérieure et être ré enroulé à l'envers.
All these winch systems known from the prior art therefore have the following 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 triggering threshold is variable over time;
  • the brake system positioned behind leads to a bulky overall device, and the intensity and endurance of the braking are not constant;
  • the apron can be lifted by 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 disadvantages of offering a cord winch with a declutching mechanism active in both directions of rotation, which combines both a limit switch system and braking very integrated into the winch mechanism, for a better compactness of the whole.

A cet effet, le treuil à cordon, comprenant un boítier recevant un organe réducteur entre la partie treuil et la partie solidaire de l'arbre du tablier du volet roulant, le train d'engrenage formant l'organe réducteur étant pourvu d'un système de fin de course, se caractérise en ce que le boítier comporte une poulie actionnée en rotation par un cordon, et solidaire du réducteur par un arbre d'entrée coaxial à ladite poulie, ledit arbre d'entrée étant entouré par une garniture conformant avec ce dernier un système d'embrayage/débrayage, l'ensemble étant emprisonné à l'intérieur de ladite poulie, cette dernière et le réducteur coopérant avec la partie solidaire de l'arbre du tablier, par l'intermédiaire d'un système de freinage anti-retour comportant au moins deux organes déformables élastiquement, montés en tandem.For this purpose, the cord winch, comprising a housing receiving a reducing organ between the winch part and the integral with the shaft of the roller shutter deck, the gear train forming the reducing member being fitted with a limit switch system, is characterized by that the housing includes a pulley actuated in rotation by a cord, and integral with the reducer by a input shaft coaxial with said pulley, said shaft of entry being surrounded by a lining conforming with the latter a clutch / declutch system, the assembly being trapped inside said pulley, this last and the reducer cooperating with the part secured to the apron shaft, via a anti-reverse braking system comprising at least two elastically deformable members, mounted in tandem.

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 perspective et en éclaté, du treuil à cordon objet de l'invention ;
  • la figure 2 est une vue en perspective et en éclaté, à plus grande échelle, selon une extrémité, du treuil à cordon objet de l'invention ;
  • la figure 3 est une vue en perspective et en éclaté, à plus grande échelle, selon une autre extrémité, du treuil à cordon 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 perspective and exploded view of the cord winch object of the invention;
  • Figure 2 is a perspective and exploded view, on a larger scale, at one end, of the cord winch object of the invention;
  • Figure 3 is a perspective and exploded view, on a larger scale, at another end, of the cord winch object of the invention;

Selon un mode préféré de réalisation, le treuil à cordon selon l'invention comporte essentiellement un carter 1 formant le boítier proprement dit de ce dernier. Celui-ci comprend deux cavités concentriques 2, 3 ; la première 3 présente un diamètre interne et une profondeur suffisants pour permettre le passage d'une partie mobile 4, formant poulie, autour de laquelle circule le cordon 5, du réducteur 6 et du système 7 d'embrayage et de débrayage, l'autre cavité 2 reçoit quant à elle le système de freinage 8 et fait saillie par rapport à la première 2 et présente une forme sensiblement cylindrique de manière à coopérer avec le tube d'enroulement 9 du tablier du volet roulant.According to a preferred embodiment, the cord winch according to the invention essentially comprises a casing 1 forming the actual case of the latter. This one comprises two concentric cavities 2, 3; the first 3 has sufficient internal diameter and depth to allow the passage of a movable part 4, forming pulley, around which the cord 5 circulates, reducer 6 and of the clutch and disengage system 7, the other cavity 2 receives the system of braking 8 and protrudes from the first 2 and has a substantially cylindrical shape so that cooperate with the winding tube 9 of the shutter deck rolling.

La poulie 4 comporte un équipage de pièces formé :

  • d'une première demi-roue d'entrée 10 obtenue notamment par une opération de moulage d'une matière plastique et qui présente sur sa face interne 11 dirigée vers l'intérieur du boítier 1, une couronne 12 pourvue d'une pluralité de zones 13 en relief et en creux régulièrement disposées sur sa circonférence de manière à permettre l'accrochage d'un cordon 5 ;
  • d'une seconde demi-roue d'entrée 14, similaire à la précédente et qui est positionnée en regard de la première 10, de manière à emprisonner une garniture 15 en élastomère dans un évidement 16 pratiqué au-dessous de la couronne 12. La face latérale dirigée vers l'intérieur de la couronne 12 dispose d'une pluralité de zones 18 en saillie, à intervalles réguliers sur la circonférence, réalisant l'immobilisation en rotation de la garniture 15 au sein de l'évidement 16. En outre, les deux demi-roues 10, 14 comportent chacune un orifice 19 central pour le passage d'un axe 20 lié à l'axe d'enroulement du tablier ;
  • d'une garniture 15 en mousse d'élastomère conformée en une bague et réalisant l'un des composants d'un organe de débrayage/embrayage. Cette bague 15 comporte au niveau de sa face latérale 21 en contact de l'évidement 16 pratiqué dans les demi-roues d'entrée 10, 14 des zones 22 conjuguées aux zones en saillie 18 qui participent à son immobilisation radiale.
The pulley 4 comprises a crew of parts formed:
  • a first input half-wheel 10 obtained in particular by a molding operation of a plastic material and which has on its internal face 11 directed towards the inside of the housing 1, a ring 12 provided with a plurality of zones 13 in relief and recessed regularly arranged on its circumference so as to allow the attachment of a bead 5;
  • a second input half-wheel 14, similar to the previous one and which is positioned opposite the first 10, so as to trap an elastomer lining 15 in a recess 16 formed below the crown 12. The lateral face directed towards the inside of the crown 12 has a plurality of zones 18 projecting at regular intervals around the circumference, immobilizing the lining 15 in rotation within the recess 16. In addition, the two half-wheels 10, 14 each have a central orifice 19 for the passage of an axis 20 linked to the winding axis of the deck;
  • a lining 15 of elastomer foam shaped as a ring and producing one of the components of a declutching / clutching member. This ring 15 has at its lateral face 21 in contact with the recess 16 formed in the input half-wheels 10, 14 of the zones 22 combined with the projecting zones 18 which participate in its radial immobilization.

Selon une caractéristique avantageuse de l'invention, la bague 15 comprend une pluralité d'évidements 23, sensiblement oblongs, judicieusement espacés sur sa tranche, et qui sous l'effet d'un certain seuil de couple se déforme élastiquement.According to an advantageous characteristic of the invention, the ring 15 includes a plurality of recesses 23, noticeably oblong, judiciously spaced on its slice, and which under the effect of a certain torque threshold elastically deforms.

Selon une autre caractéristique avantageuse de l'invention, la bague 15 comporte un orifice 24 coaxial par rapport aux orifices 19 des demi-roues d'entrée 10, 14 et dont les parois latérales disposent d'un profil épicycloïdique.According to another advantageous characteristic of the invention, the ring 15 has a coaxial orifice 24 relative to the orifices 19 of the input half-wheels 10, 14 and whose side walls have a profile epicyclic.

L'autre organe de débrayage/embrayage est constitué par un arbre d'entrée 25. Cet arbre d'entrée 25 dispose sur l'une de ses faces frontales 26 d'un moyen de connexion réalisé sous la forme notamment d'une partie cannelée ou dentée qui coopère au niveau d'un planétaire 27 appartenant à un train épicycloïdal formant le réducteur 6, l'autre face frontale 28 comporte un épaulement 29 dont les dimensions correspondent au diamètre de l'orifice 19 central de l'une des demi-roues d'entrée 10 ou 14.The other declutching / clutching member is constituted by an input shaft 25. This input shaft 25 has on one of its front faces 26 of a connection means produced in particular in the form of a fluted part or tooth which cooperates on a planetary level 27 belonging to an epicyclic train forming the reducer 6, the other front face 28 has a shoulder 29 whose dimensions correspond to the diameter of the central orifice 19 of one of the input half-wheels 10 or 14.

La paroi externe 30 de l'arbre d'entrée 25 est pourvue d'une succession de bossages 31 dont le profil est similaire à ceux pratiqués au centre de la bague d'élastomère 15, ses profils coopérant entre eux de manière à assurer la transmission du couple de rotation quel que soit son sens.The outer wall 30 of the input shaft 25 is provided a succession of bosses 31 whose profile is similar to those practiced in the center of the ring elastomer 15, its profiles cooperating with each other so as to ensure the transmission of the torque whatever its meaning.

Le fonctionnement de l'organe de 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'a la descente du tablier, les cavités 23 présentes dans l'épaisseur de la bague 15 en élastomère conservent leur géométrie et ne se déforment pas. La bague 15 ne se cisaille pas entre sa paroi latérale 21 qui est fixe dans l'évidement 16 pratiqué dans les deux demi-roues d'entrée 10 et 14 et sa paroi latérale interne qui coopère au niveau de l'arbre d'entrée 25. Le mouvement de rotation imprimé par le cordon 5 se transmet à l'arbre d'entrée 25 puis, par l'intermédiaire du réducteur 6, au tube d'enroulement 9 du tablier du volet roulant.In the presence of a torque of normal intensity, either up or down the apron, the cavities 23 present in the thickness of the ring 15 in elastomer retain their geometry and do not not distort. The ring 15 does not shear between its side wall 21 which is fixed in the recess 16 used in the two input half-wheels 10 and 14 and its internal side wall which cooperates at the level of the shaft input 25. The rotational movement imparted by the cord 5 is transmitted to the input shaft 25 then, by through the reducer 6, to the winding tube 9 of the roller shutter deck.

En présence d'un couple de rotation d'intensité anormale, les cavités 23 se déforment sous l'action du couple et induisent un cisaillement entre la face latérale 21 de la bague 15 qui est fixe et celle 30 qui se trouve à l'interface avec l'arbre d'entrée 25. 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 25 et la bague 15 en élastomère. Le mouvement imprimé sur le treuil se trouve donc, durant toute la phase de glissement entre la bague en élastomère et l'arbre d'entrée, 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 23 deform under the action of the couple and induce a shear between the lateral face 21 of the ring 15 which is fixed and that 30 which is located the interface with the input shaft 25. 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 25 and the ring 15 in elastomer. The movement printed on the winch is therefore, during the entire phase of sliding between the elastomer ring and input shaft, removed up to what the respective side faces cooperate with new as soon as the intensity torque is removed abnormal.

Ainsi, si l'utilisateur sollicite le cordon 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 winch cord 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.

La poulie 4 formée par l'assemblage de deux demi-roues 10-14 d'entrée emprisonnant l'arbre d'entrée 25 et la bague 15 en élastomère, est positionnée à l'intérieur de la cavité de grande dimension du carter en ayant pris soin au préalable d'accoupler à la fois le planétaire 27 à l'arbre d'entrée 25 et à des satellites 32, 33, 34, au nombre de trois et à 120°, qui sont maintenus en position par l'intermédiaire d'un porte-satellites 35 qui est relié quant à lui grâce à un système de frein 8, qui sera décrit ci-dessous, à l'axe d'enroulement 9 du tambour du tablier du volet roulant.Pulley 4 formed by the assembly of two half-wheels Input 10-14 trapping input shaft 25 and the elastomer ring 15, is positioned inside the large housing cavity having taken take care to couple the sun gear 27 input shaft 25 and satellites 32, 33, 34, number three and at 120 °, which are held in position via a planet carrier 35 which is connected in turn through a brake system 8, which will described below, at the winding axis 9 of the drum of the roller shutter deck.

Le carter 1 dispose de deux échancrures 36, 37 placées de part en part d'un axe médian, permettant le passage du cordon du treuil 5. En outre, la cavité 2 principale du carter 1 dispose au fond et sur sa paroi latérale interne, d'une couronne 38 à denture droite sur laquelle engrène les satellites 32, 33, 34.The casing 1 has two notches 36, 37 placed right through a median axis, allowing the passage of the winch cord 5. In addition, the main cavity 2 of the casing 1 has at the bottom and on its side wall internal, of a crown 38 with straight teeth on which meshes satellites 32, 33, 34.

On interpose donc entre l'arbre du tablier et l'arbre lié au réducteur, un système de frein d'irréversibilité 8.We therefore interpose between the apron tree and the linked tree to the reducer, an irreversibility brake system 8.

Selon un mode préféré de réalisation ce frein 8 d'irréversibilité est constitué d'un dispositif 39 déformable élastiquement en fonction du type de sollicitations, généralement de la torsion, appliqués à l'une ou l'autre de ses extrémités.According to a preferred embodiment, this brake 8 of irreversibility consists of a device 39 elastically deformable depending on the type of stresses, generally torsion, applied to either end.

Selon une caractéristique avantageuse de l'invention, compte tenu que le couple de freinage est proportionnel au diamètre et afin d'augmenter l'intensité du freinage, tout en garantissant une longévité du système de frein 8, on utilise au moins deux ressorts à spirale, montés en tandem, dont le sens de l'hélice de ces ressorts est tel que, si les brins terminaux deviennent solidaires des tocs d'entraínement, coopérant respectivement au niveau de l'extrémité de l'arbre lié à l'axe d'enroulement 9 du tablier du volet roulant et au niveau du porte-satellites 35, grâce à un toc d'entrée, relié quant à lui aux demi-roues d'entrée, de manière que le nombre de spires de ces ressorts a tendance à augmenter, ceci tendra à faire diminuer le diamètre extérieur de ces ressorts. Ces ressorts pourront donc tourner librement et ne viendront pas au contact d'une cloche 40 les entourant, cette cloche 40 étant quant à elle solidaire du carter 1 par des cannelures externes, ou simplement par emboítement. Cette cloche 40 élaborée dans un feuillard métallique constitue la garniture qui va permettre le freinage par frottement des spires des ressorts contre elle. Elle est placée à l'intérieur du carter 1, au fond de la cavité secondaire 2, située coaxialement à la cavité principale 3.According to an advantageous characteristic of the invention, taking into account that the braking torque is proportional to the diameter and in order to increase the braking intensity, while ensuring the longevity of the brake system 8, at least two spiral springs are used, mounted in tandem, whose direction of the helix of these springs is such that if the terminal strands become integral with the training dogs, cooperating respectively at the level of the end of the shaft linked to the winding axis 9 of the roller shutter curtain and at the level of the planet carrier 35, thanks to an entry knock, which is connected to the half-wheels input, so that the number of turns of these springs tend to increase, this will tend to decrease the outside diameter of these springs. These springs can therefore rotate freely and will not come not in contact with a bell 40 surrounding them, this bell 40 being secured to housing 1 by external grooves, or simply by interlocking. This bell 40 made in a metal strip constitutes the lining which will allow braking by friction of the coils of the springs against it. She is placed inside the casing 1, at the bottom of the cavity secondary 2, located coaxially to the main cavity 3.

Par contre, si sous l'effet de la charge, le toc de sortie (côté arbre 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 ces ressorts, qui viennent alors frotter au contact de ladite cloche 40.On the other hand, if under the effect of the load, the knock of outlet (shaft side of the roller shutter) tends to turn so as to decrease the number of turns, this reduction then translates into an increase in diameter of these springs, which then rub at contact of said bell 40.

Le réducteur épicycloïdal comporte un système de fin de course en position basse du tablier. A cet effet, on élabore un train épicycloïdal dont les engrenages formant les satellites 32, 33, 34 et le planétaire 27 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 de nombre de dents des divers engrenages appartenant au train épicycloïdal, un coefficient de réduction entre l'arbre lié au treuil 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 planetary reduction gearbox includes an end of stroke in the lower position of the bulkhead. To this end, we develops an epicyclic train whose gears forming satellites 32, 33, 34 and planetary 27 have a number of prime teeth between them. If we consider a tooth on each gear with this property, the kinematics of these gears determines a single point of crossing for the two teeth considered, this crossing repeating according to a period of n turns (n integer). he therefore suffices to determine by an adequate choice of number of teeth of the various gears belonging to the train epicyclic, a reduction coefficient between the tree linked to the winch and the shaft secured to the shutter deck rolling, this coefficient also determining the number rotations of the receiving shaft necessary for movement of the race of said apron.

Pratiquement en regard de chacune d'une dent considérée appartenant respectivement à l'un des satellites et au planétaire, sur l'un des côtés de l'engrenage un ergot, 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 one of the satellites and to planetary, on one side of the gear a lug, end of race; these protruding, they will come in contact with each other after the number of turns determined causing the shaft movement to stop door apron.

L'ensemble de toutes ces pièces (demi-roues d'entrée 10, 14, arbre d'entrée 25, bague en élastomère 15, planétaire 27, satellites 32, 33, 34, porte-satellites 35, cloche 40, ressorts 39, tocs de sortie, cordon 5...) est monté à l'intérieur du carter 1 et maintenu en position dans celui-ci grâce à un flasque 41 qui en obture la cavité principale 3. Ce flasque est fixé sur le carter par des organes appropriés (vis, rivets...).All of these parts (input half-wheels 10, 14, input shaft 25, elastomer ring 15, planetary 27, satellites 32, 33, 34, planet carrier 35, bell 40, springs 39, outlet lugs, cord 5 ...) is mounted at inside the housing 1 and held in position in this one thanks to a flange 41 which closes the cavity main 3. This flange is fixed on the casing by suitable devices (screws, rivets ...).

On positionne dans le carter 1 au niveau des échancrures 36, 37 permettant le passage du cordon 5 et au droit de celles-ci, des galets 42 pour améliorer le guidage du cordon 5 tout autour de la poulie 4.We position in the casing 1 at the notches 36, 37 allowing the passage of the cord 5 and the right of these, rollers 42 to improve the guiding of the cord 5 all around the pulley 4.

L'invention telle que décrite précédemment offre de multiples avantages et tout particulièrement dans un encombrement réduit, de l'ordre de 22 mm, le treuil objet de l'invention dispose d'un système d'embrayage/débrayage, d'un système de fin de course, d'un système de frein et d'un système de réduction.The invention as described above offers multiple advantages and especially in a reduced overall dimensions, of the order of 22 mm, the object winch of the invention has a system clutch / disengage, a limit switch system, a brake system and a reduction system.

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 (9)

Treuil à cordon, comprenant un boítier recevant un organe réducteur (6) entre la partie treuil et la partie solidaire de l'arbre du tablier du volet roulant, le train d'engrenage formant l'organe réducteur étant pourvu d'un système de fin de course, caractérisé en ce que le boítier (1) comporte une poulie (4) actionnée en rotation par un cordon (5), et solidaire du réducteur (6) par un arbre d'entrée (25) coaxial à ladite poulie (4), ledit arbre d'entrée (25) étant entouré par une garniture (15) conformant avec ce dernier un système d'embrayage/débrayage, l'ensemble étant emprisonné à l'intérieur de ladite poulie (4), cette dernière et le réducteur (6) coopérant avec la partie solidaire de l'arbre du tablier (9), par l'intermédiaire d'un système de freinage anti-retour comportant au moins deux organes (39) déformables élastiquement, montés en tandem.Corded winch, comprising a box receiving a reducing member (6) between the winch part and the part integral with the shaft of the roller shutter deck, the gear train forming the reducing member being provided a limit switch system, characterized in that the housing (1) comprises a pulley (4) actuated in rotation by a cord (5), and integral with the reducer (6) by a input shaft (25) coaxial with said pulley (4), said input shaft (25) being surrounded by a gasket (15) conforming with the latter a system clutch / disengage, the assembly being trapped at inside said pulley (4), the latter and the reducer (6) cooperating with the integral part of the apron shaft (9), via a system non-return braking system comprising at least two members (39) elastically deformable, mounted in tandem. Treuil à cordon selon la revendication 1, caractérisé en ce que la poulie (4) comporte, d'une part une première demi-roue d'entrée (10) qui présente sur sa face interne (11) dirigée vers l'intérieur du boítier (1), une couronne (12) pourvue d'une pluralité de zones (13) en relief et en creux régulièrement disposées sur sa circonférence de manière à permettre l'accrochage d'un cordon (5), et d'autre part une seconde demi-roue d'entrée (14), similaire à la précédente et qui est positionnée en regard de la première (10), de manière à emprisonner une garniture (15) en élastomère dans un évidement (16) pratiqué au-dessous de la couronne (12).Cord winch according to claim 1, characterized in that the pulley (4) comprises, on the one hand a first input half-wheel (10) which has on its internal face (11) directed towards the inside of the case (1), a crown (12) provided with a plurality of zones (13) in relief and recess regularly arranged on its circumference so as to allow the attachment of a cord (5), and on the other hand a second half-wheel input (14), similar to the previous one and which is positioned opposite the first (10), so that trap an elastomeric lining (15) in a recess (16) formed below the crown (12). Treuil à cordon selon la revendication 2, caractérisé en ce que la face latérale dirigée vers l'intérieur de la couronne (12) dispose d'une pluralité de zones (18) en saillie, à intervalles réguliers sur la circonférence, réalisant l'immobilisation en rotation de la garniture (15) au sein de l'évidement (16). Cord winch according to claim 2, characterized in that the side face directed towards the inside of the crown (12) has a plurality of zones (18) in protrusion, at regular intervals around the circumference, immobilizing the lining in rotation (15) within the recess (16). Treuil à cordon selon la revendication 2, caractérisé en ce que la garniture (15) est réalisée dans une mousse d'élastomère conformée en une bague, ladite bague (15) comportant au niveau de sa face latérale (21) en contact de l'évidement (16) pratiqué dans les demi-roues d'entrée (10, 14) des zones (22) conjuguées aux zones en saillie (18) qui participent à son immobilisation radiale.Cord winch according to claim 2, characterized in that the lining (15) is made of foam elastomer shaped into a ring, said ring (15) comprising at its lateral face (21) in contact of the recess (16) made in the input half-wheels (10, 14) of the zones (22) combined with the protruding zones (18) who participate in its radial immobilization. Treuil à cordon selon la revendication 4, caractérisé en ce que la bague (15) comprend une pluralité d'évidements (23), sensiblement oblongs, judicieusement espacés sur sa tranche, et qui sous l'effet d'un certain seuil de couple se déforme élastiquement.Cord winch according to claim 4, characterized in that the ring (15) comprises a plurality recesses (23), substantially oblong, judiciously spaced apart on its edge, and which under the effect of a certain torque threshold deforms elastically. Treuil à cordon selon l'une quelconque des revendications 2 à 5, caractérisé en ce que la bague (15) comporte un orifice (24) coaxial par rapport aux orifices (19) des demi-roues d'entrée (10, 14) et dont les parois latérales disposent d'un profil épicycloïdique.Cord winch according to any one of Claims 2 to 5, characterized in that the ring (15) has a hole (24) coaxial with the holes (19) input half-wheels (10, 14) and whose walls lateral have an epicyclic profile. Treuil à cordon selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi externe (30) de l'arbre d'entrée (25) est pourvue d'une succession de bossages (31) dont le profil est similaire à ceux pratiqués au centre de la bague d'élastomère (15), ses 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 outer wall (30) of the input shaft (25) is provided a succession of bosses (31) whose profile is similar to those practiced in the center of the ring elastomer (15), its profiles cooperating with one another so as to ensure the transmission of the torque whatever its meaning. Treuil à cordon selon l'une quelconque des revendications précédentes, caractérisé en ce que le boítier (1) dispose de deux échancrures (36, 37) placées de part en part d'un axe médian, permettant le passage du cordon du treuil (5), le cordon étant guidé par des galets (42) positionnés dans le boítier (1) au niveau des échancrures (36, 37). Cord winch according to any one of previous claims, characterized in that the housing (1) has two notches (36, 37) placed right through a median axis, allowing the passage of the winch cord (5), the cord being guided by rollers (42) positioned in the housing (1) at the notches (36, 37). Treuil à cordon selon l'une quelconque des revendications précédentes, caractérisé en ce que les ressorts (39), montés en tandem et formant les organes déformables élastiquement, sont entourés par une cloche (40), cette cloche (40) étant quant à elle solidaire du boítier (1) par des cannelures externes, ou simplement par emboítement.Cord winch according to any one of previous claims, characterized in that the springs (39), mounted in tandem and forming the members elastically deformable, are surrounded by a bell (40), this bell (40) being in turn secured to the housing (1) by external grooves, or simply by interlocking.
EP19980401644 1997-07-02 1998-07-01 Cord winch with a coupling and decoupling device for driving the roller of a roller door or blind Expired - Lifetime EP0889193B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9708350A FR2765618B1 (en) 1997-07-02 1997-07-02 CORD WINCH COMPRISING A CLUTCH / DISENGAGING MEMBER FOR MANEUVERING THE APRON HOLDER SHAFT OF A ROLLING SHUTTER
FR9708350 1997-07-02

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EP0889193A1 true EP0889193A1 (en) 1999-01-07
EP0889193B1 EP0889193B1 (en) 2003-05-21

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DE (2) DE889193T1 (en)
ES (1) ES2127174T3 (en)
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PT (1) PT889193E (en)

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FR2811013A1 (en) * 2000-07-03 2002-01-04 Bubendorff Volet Roulant MANUAL TYPE DRIVE DEVICE FOR ROLLING SHUTTER
US6474393B1 (en) 1999-07-14 2002-11-05 Hunter Douglas Industries Bv Drive mechanism and head rail for a blind
EP1409828A2 (en) * 2002-03-20 2004-04-21 Rollease, Inc. A roller shade clutch with internal gearing
US6854503B2 (en) * 2002-03-20 2005-02-15 Rollease, Inc. Semi-cordless unbalanced spring driven blind system and methods for adjusting and making same
EP1637693A1 (en) * 2004-09-21 2006-03-22 BUBENDORFF Société Anonyme Device for driving a roller of a roller shutter
GB2418449A (en) * 2004-09-27 2006-03-29 Louver Lite Ltd Control unit for window blind including intermediate gearing
EP1854954A2 (en) * 2002-03-20 2007-11-14 Rollease, Inc. A roller shade clutch with internal gearing
EP2807322A4 (en) * 2012-01-24 2015-11-25 Rollease Inc Window treatment operating apparatus with cycloidal drive
US20180044981A1 (en) * 2016-02-04 2018-02-15 Haifeng Wang Curtain controller
GB2562878A (en) * 2017-04-10 2018-11-28 Mechoshade Sys Llc Geared bracket for a window shade
CN113833396A (en) * 2021-01-28 2021-12-24 型态同步科技股份有限公司 Lifting control module and roller shutter lifting device

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FR2816016B1 (en) 2000-10-27 2003-02-07 Zurfluh Feller TORQUE LIMITER
US10407983B2 (en) 2016-10-26 2019-09-10 Hunter Douglas Inc. Operating system for an architectural covering

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EP0692605A1 (en) * 1994-07-11 1996-01-17 Zurfluh Feller S.A. Disengageable cord winch

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DE2620808A1 (en) * 1976-05-11 1977-11-17 Selve Fa Ernst Compact roller blind mechanism - having central coil spring with attachments inside planetary gear to produce self-acting brake
EP0692605A1 (en) * 1994-07-11 1996-01-17 Zurfluh Feller S.A. Disengageable cord winch

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6474393B1 (en) 1999-07-14 2002-11-05 Hunter Douglas Industries Bv Drive mechanism and head rail for a blind
US6637492B2 (en) 1999-07-14 2003-10-28 Hunter Douglas Industries B.V. Drive mechanism and head rail for a blind
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
EP1854954A2 (en) * 2002-03-20 2007-11-14 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
US6854503B2 (en) * 2002-03-20 2005-02-15 Rollease, Inc. Semi-cordless unbalanced spring driven blind system and methods for adjusting and making same
EP1409828A2 (en) * 2002-03-20 2004-04-21 Rollease, Inc. A roller shade clutch with internal gearing
EP1854954A3 (en) * 2002-03-20 2008-03-26 Rollease, Inc. A roller shade clutch with internal gearing
EP1717399A3 (en) * 2002-03-20 2008-04-09 Rollease, Inc. A roller shade clutch with internal gearing
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.
GB2418449A (en) * 2004-09-27 2006-03-29 Louver Lite Ltd Control unit for window blind including intermediate gearing
EP2807322A4 (en) * 2012-01-24 2015-11-25 Rollease Inc Window treatment operating apparatus with cycloidal drive
US20180044981A1 (en) * 2016-02-04 2018-02-15 Haifeng Wang Curtain controller
GB2562878A (en) * 2017-04-10 2018-11-28 Mechoshade Sys Llc Geared bracket for a window shade
US10337243B2 (en) 2017-04-10 2019-07-02 Mechoshade Systems, Llc Geared bracket for a window shade
GB2562878B (en) * 2017-04-10 2019-08-14 Mechoshade Sys Llc Geared bracket for a window shade
GB2573894A (en) * 2017-04-10 2019-11-20 Mechoshade Sys Llc Geared bracket for a window shade
GB2573894B (en) * 2017-04-10 2020-06-24 Mechoshade Sys Llc Geared bracket for a window shade
US10808457B2 (en) 2017-04-10 2020-10-20 Mechoshade Systems, Llc Planetary gear with bead stop
US11230885B2 (en) 2017-04-10 2022-01-25 Mechoshade Systems, Llc Geared window shade bracket with bead stop
CN113833396A (en) * 2021-01-28 2021-12-24 型态同步科技股份有限公司 Lifting control module and roller shutter lifting device

Also Published As

Publication number Publication date
FR2765618B1 (en) 1999-08-27
ES2127174T3 (en) 2003-12-01
PT889193E (en) 2003-10-31
DE69814744D1 (en) 2003-06-26
DE889193T1 (en) 1999-06-10
EP0889193B1 (en) 2003-05-21
ES2127174T1 (en) 1999-04-16
FR2765618A1 (en) 1999-01-08
DE69814744T2 (en) 2003-11-20

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