EP0293307A1 - Two-speed reduction mechanism to operate adjustable light access closing devices of the kind of lamellar blinds with tiltable slats, and the like - Google Patents

Two-speed reduction mechanism to operate adjustable light access closing devices of the kind of lamellar blinds with tiltable slats, and the like Download PDF

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Publication number
EP0293307A1
EP0293307A1 EP88420131A EP88420131A EP0293307A1 EP 0293307 A1 EP0293307 A1 EP 0293307A1 EP 88420131 A EP88420131 A EP 88420131A EP 88420131 A EP88420131 A EP 88420131A EP 0293307 A1 EP0293307 A1 EP 0293307A1
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EP
European Patent Office
Prior art keywords
ring
crown
closing devices
mechanism according
aforementioned
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Withdrawn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
EP88420131A
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German (de)
French (fr)
Inventor
René Bresson
Jean-Pierre Cerutti
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Simu SAS
Original Assignee
Simu SAS
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Filing date
Publication date
Application filed by Simu SAS filed Critical Simu SAS
Publication of EP0293307A1 publication Critical patent/EP0293307A1/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Withdrawn legal-status Critical Current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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/36—Lamellar or like blinds, e.g. venetian blinds with vertical lamellae ; Supporting rails therefor
    • E06B9/361—Transmissions located at the end of the supporting rail
    • 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives

Definitions

  • the present invention relates to closing devices in which the same motor member rotates the deployment of the apron and the fine adjustment of the screening of the light passing through it. It is particularly suitable for the operation of shutters with adjustable slats or openwork slats, Venetian blinds with vertical displacement, and curtains with vertical slats and with adjustable displacement.
  • this drive member When this drive member is constituted by a crank maneuvered by hand by the user, the adjustment of the orientation is relatively easy. It is no longer the same when the rotary drive of the stool is operated with the aid of an electric geared motor, since speed intervenes and considerably impedes control. Indeed, if one chooses a sufficiently high drive speed to ensure in acceptable conditions of rapidity the displacement of the blades, the adjustment of the orientation of the latter becomes very sharp and practically impracticable, whereas if in the opposite direction we mean to facilitate this adjustment operation by lowering the speed of rotation of the winding drum, the slowness of the movements becomes difficult to bear.
  • the present invention intends to remedy this, by providing the closing devices of the type envisaged with a reducing mechanism capable of imparting, fully automatically, to the winding drum two different speeds to correspond to the maneuvers successively intended for the movement of the apron and the precise adjustment of the screening of the light.
  • the mechanism according to the invention is defined in claim 1. Interposed between the output member of the drive system and the apron winding drum, it comprises a planetary input pinion which cooperates with at least one satellite pinion carried by an output ring and cooperating with a ring gear whose angular immobilization is operated using a braking device actuated by the aforementioned ring on the occasion of each rotation of the aforementioned planetary pinion.
  • the satellite pinion behaves either as a rolling member of revolution introducing a reduction ratio in the drive of the ring, or as a member which is not driven by no rotational movement along its axis and which consequently transmits the movement in the 1/1 ratio.
  • the braking device comprises at least one spring, the turns of which are arranged between a fixed friction wall and a cylindrical surface of the ring gear, while its ends, folded over inside this ring, cooperate with a radial finger integral with the outlet ring.
  • the reduction mechanism is mounted inside a casing formed by the assembly of a cylindrical housing 1 closed by a transverse bottom 2. At its center, this bottom 2 is provided with a bearing 3 which supports a shaft 4, one end of which is profiled at 4 a to be driven by the output member of the geared motor (not shown) intended for driving in rotation the winding drum of the blind in question.
  • the shaft 4, forming an input member for the mechanism comprises a toothed portion 4b which cooperates, in the manner of a sun gear with planet gears 5, in the number of three in the embodiment taken into account.
  • Each satellite pinion 5 pivots freely on an axis 6 which is mounted in cantilever on a plate 7 which screws 8 fix against the front face of an outlet ring 9.
  • This ring 9 is engaged with reduced clearance inside the axial opening of a rotating sleeve 10, itself centered in the casing 1-2.
  • the wall of the aforementioned opening of the sleeve 9 has, in front of the ring 9, a toothing 10 a which meshes with the planet gears 5, the sleeve 9 thus being comparable to a toothed crown.
  • the mechanism is provided with a braking system which comprises a spring 11, the turns of which are arranged between a rear cylindrical surface 10b of the sleeve or crown 10 and an annular friction lining 12 glued or otherwise immobilized against the internal wall of the housing 1-2.
  • the rear part of the ring 9 comprises, in addition to an axial means 9 has pierced in 9 b to ensure the driving of the usual end-piece with hexagonal section of the blind drums, a radial finger 9 c whose longitudinal faces are hollowed out notches 9 d .
  • notches 9 d are intended to accommodate the folded ends 11 a of the spring 11, which ends penetrate by notches 10 c inside a chamber 10 d formed in the rear bearing surface 10 b of the sleeve 10.
  • This chamber 10 d has in section a semi-circular profile which thus defines a sector-shaped projection 10 e .
  • the diameter of the wire which forms the spring 11 is such that in the rest position, that is to say when said spring is not subjected to any force, it bears simultaneously against the lining 12 and against the bearing surface 10 b of the socket 10, so that the latter is immobilized angularly.
  • the finger 9 c comes to bear against an end 11 a which engages in the notch 9 d which faces it.
  • the finger 9 c pushes the end 11 a , which has the effect of tightening radially inwards the spring 11 including the turns, by compressing against the reach 10 b , release the sleeve or crown 10.
  • the latter is consequently driven in rotation by the finger 9 c (see fig. 5), so that the gear reduction stops immediately and the awning drum, driven at full speed , can ensure the winding or rapid unrolling of the links associated with the blades.
  • the user can again control the gear motor in one direction or the other to pro yield to the adjustment of the orientation of the blades.
  • the planet gears 5 intervene as a result of the angular immobilization of the sleeve 10, so that the drum is driven at very reduced speed, thereby allowing perfectly precise adjustment.
  • the reduction mechanism according to the invention is capable of being produced as well as an accessory device suitable for being interposed between a usual closing device and its drive geared motor, as well as as an assembly capable of being directly incorporated to a device specially established for this purpose.

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

Abstract

Lorsque la couronne dentée (10) tourne avec la bague de sortie (9), le système planétaire-satellites (4b-5) assure la transmission sans réduc­tion pour le déplacement vertical des lames du store, tandis que lorsqu'elle est immobilisée par le dispositif de freinage (11-12), ledit système introduit automatiquement une forte réduction qui permet le ré­glage très précis de l'orientation desdites lames.When the toothed ring (10) rotates with the output ring (9), the planetary-planet gear system (4b-5) ensures the transmission without reduction for the vertical displacement of the blind slats, while when it is immobilized by the braking device (11-12), said system automatically introduces a strong reduction which allows very precise adjustment of the orientation of said blades.

Description

La présente invention a trait aux dispositifs de fermeture dans lesquels le même organe moteur assure par rotation le déploiement du tablier et le réglage fin du tamisage de la lumière passant à travers celui-ci. Elle est particulièrement adaptée à la manoeuvre des volets à lames orientables ou à la lames ajourées, des stores vénitiens à déplacement vertical, et des rideaux à lames verticales et à déplacement orientable.The present invention relates to closing devices in which the same motor member rotates the deployment of the apron and the fine adjustment of the screening of the light passing through it. It is particularly suitable for the operation of shutters with adjustable slats or openwork slats, Venetian blinds with vertical displacement, and curtains with vertical slats and with adjustable displacement.

On sait que dans les dispositifs du genre en question, la mise en rota­tion du tambour qui assure, par encoulement des liens souples qui re­lient les unes aux autres les lames orientables formant le tablier, l'ouverture ou la fermeture de celui-ci, provoque en premier lieu une modification de l'orientation desdites lames, cette modification s'ef­fectuant suivant deux directions opposées en fonction du sens de dépla­cement (ouverture ou fermeture). On comprend dans ces conditions que lorsque les lames ont été amenées à la position désirée, pour régler leur orientation il suffit de remettre en rotation, pendant un très cours laps de temps, l'organe moteur dans un sens ou dans l'autre sui­vant l'orientation désirée.We know that in devices of the kind in question, the rotation of the drum which ensures, by flow of flexible links which connect to each other the adjustable blades forming the deck, the opening or closing thereof, causes firstly a modification of the orientation of said blades, this modification taking place in two opposite directions as a function of the direction of movement (opening or closing). It is understood under these conditions that when the blades have been brought to the desired position, to adjust their orientation it suffices to return to rotation, for a very short period of time, the motor member in one direction or the other according to l 'desired orientation.

Lorsque cet organe moteur est constitué par une manivelle manoeuvrée à la main par l'utilisateur, le réglage de l'orientation est relativement aisé. Il n'en va plus de même lorsque l'entraînement en rotation du ta­bour est opéré à l'aide d'un moto-réducteur électrique, du fait que la vitesse intervient et gêne considérablement la commande. En effet, si l'on choisit une vitesse d'entraînemùent suffisamment élevée pour assu­rer dans des conditions acceptables de rapidité le déplacement des la­mes, le réglage de l'orientation de celles-ci devient très pointu et pratiquement irréalisable de manière précise, alors que si en sens in­verse on entend faciliter cette opération de réglage en abaissant la vitesse de rotation du tambour d'enroulement, la lenteur des déplace­ments devient difficilement supportable.When this drive member is constituted by a crank maneuvered by hand by the user, the adjustment of the orientation is relatively easy. It is no longer the same when the rotary drive of the stool is operated with the aid of an electric geared motor, since speed intervenes and considerably impedes control. Indeed, if one chooses a sufficiently high drive speed to ensure in acceptable conditions of rapidity the displacement of the blades, the adjustment of the orientation of the latter becomes very sharp and practically impracticable, whereas if in the opposite direction we mean to facilitate this adjustment operation by lowering the speed of rotation of the winding drum, the slowness of the movements becomes difficult to bear.

On est donc en fait amené à adopter un compromis qui ne satisfait réel­lement ni l'une, ni l'autre des deux manoeuvres.We are therefore in fact led to adopt a compromise which does not really satisfy either of the two maneuvers.

C'est à cet inconvénient qu'entend remédier la présente invention et ce en dotant les dispositifs de fermeture du type envisagé d'un mécanisme réducteur propre à conférer, de manière entièrement automatique, au tambour d'enroulement deux vitesses différentes pour correspondre aux manoeuvres successivement destinées au déplacement du tablier et au ré­glage précis du tamisage de la lumière.It is to this drawback that the present invention intends to remedy this, by providing the closing devices of the type envisaged with a reducing mechanism capable of imparting, fully automatically, to the winding drum two different speeds to correspond to the maneuvers successively intended for the movement of the apron and the precise adjustment of the screening of the light.

Le mécanisme suivant l'invention est défini à la revendication 1. Inter­posé entre l'organe de sortie du système d'entraînement et le tambour d'enroulement du tablier, il comprend un pignon planétaire d'entrée qui coopère avec au moins un pignon satellite porté par une bague de sortie et coopérant avec une couronne dentée dont l'immobilisation angulaire est opérée à l'aide d'un dispositif de freinage actionné par la bague précitée à l'occasion de chaque mise en rotation du pignon planétaire sus-mentionné.The mechanism according to the invention is defined in claim 1. Interposed between the output member of the drive system and the apron winding drum, it comprises a planetary input pinion which cooperates with at least one satellite pinion carried by an output ring and cooperating with a ring gear whose angular immobilization is operated using a braking device actuated by the aforementioned ring on the occasion of each rotation of the aforementioned planetary pinion.

On conçoit que suivant que la couronne extérieure est ou non immobili­sée angulairement, le pignon satellite se comporte soit comme un organe roulant de révolution introduisant un rapport de démultiplication dans l'entraînement de la bague, soit comme un organe qui n'est animé d'aucun mouvement de rotation suivant son axe et qui transmet en conséquence le mouvement dans le rapport 1/1.It can be understood that, depending on whether the outer ring is angularly immobilized or not, the satellite pinion behaves either as a rolling member of revolution introducing a reduction ratio in the drive of the ring, or as a member which is not driven by no rotational movement along its axis and which consequently transmits the movement in the 1/1 ratio.

Conformément à un mode de mise en oeuvre préféré de l'invention, le dis­positif de freinage comprend au moins un ressort dont les spires sont disposées entre une paroi fixe de friction et une portée cylindrique de la couronne dentée, tandis que ses extrémités, repliées à l'intérieur de cette couronne, coopérent avec un doigt radial solidaire de la bague de sortie.In accordance with a preferred embodiment of the invention, the braking device comprises at least one spring, the turns of which are arranged between a fixed friction wall and a cylindrical surface of the ring gear, while its ends, folded over inside this ring, cooperate with a radial finger integral with the outlet ring.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 est une coupe axiale d'un mécanisme réducteur établi confor­mément à l'invention et supposé associé à un dispositif de store à déplacement vertical et à lames horizontales orientables.
  • Fig. 2 montre en perpespective, préalablement à leur montage dans le carter du dispositif, la bague de sortie équipée de ses pignons satellites et la couronne dentée.
  • Fig. 3 à 5 sont des coupes schématiques suivant le plan transversal indiqué en A-A en fig. 1, illustrant le fonctionnement du mécanisme à trois phases différentes.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is an axial section of a reduction mechanism established in accordance with the invention and assumed to be associated with a blind device with vertical displacement and with adjustable horizontal slats.
  • Fig. 2 shows in perpespective, prior to their mounting in the casing of the device, the output ring fitted with its planet gears and the ring gear.
  • Fig. 3 to 5 are schematic sections along the transverse plane indicated in AA in fig. 1, illustrating the operation of the mechanism in three different phases.

Dans l'exemple de réalisation envisagé, le mécanisme réducteur est monté à l'intérieur d'un carter formé par l'assemblage d'un boîtier cylindri­que 1 fermé par un fond transversal 2. En son centre, ce fond 2 est muni d'un coussinet 3 qui supporte un arbre 4 dont une extrémité est profilée en 4a pour être entraînée par l'organe de sortie du moto-réducteur (non représenté) destiné à l'entraînement en rotation du tambour d'enroule­ment du store considéré.In the embodiment envisaged, the reduction mechanism is mounted inside a casing formed by the assembly of a cylindrical housing 1 closed by a transverse bottom 2. At its center, this bottom 2 is provided with a bearing 3 which supports a shaft 4, one end of which is profiled at 4 a to be driven by the output member of the geared motor (not shown) intended for driving in rotation the winding drum of the blind in question.

A L'intérieur de ce carter 1-2, l'arbre 4, formant organe d'entrée pour le mécanisme, comporte une partie dentée 4b qui coopère, à la manière d'un pignon planétaire, avec des pignons satellites 5, au nombre de trois dans l'exemple de réalisation pris en considération. Chaque pignon satellite 5 tourillonne librement sur un axe 6 qui est monté en porte-à-­faux sur un plateau 7 que des vis 8 fixent contre la face antérieure d'une bague de sortie 9.Inside this housing 1-2, the shaft 4, forming an input member for the mechanism comprises a toothed portion 4b which cooperates, in the manner of a sun gear with planet gears 5, in the number of three in the embodiment taken into account. Each satellite pinion 5 pivots freely on an axis 6 which is mounted in cantilever on a plate 7 which screws 8 fix against the front face of an outlet ring 9.

Cette bague 9 est engagée à jeu réduit à l'intérieur de l'ouverture axiale d'une douille tournante 10, elle-même centrée dans le carter 1-2. La paroi de l'ouverture précitée de la douille 9 présente, en avant de la bague 9, une denture 10a qui engrène avec les pignons satellites 5, la douille 9 étant ainsi assimilable à une couronne dentée.This ring 9 is engaged with reduced clearance inside the axial opening of a rotating sleeve 10, itself centered in the casing 1-2. The wall of the aforementioned opening of the sleeve 9 has, in front of the ring 9, a toothing 10 a which meshes with the planet gears 5, the sleeve 9 thus being comparable to a toothed crown.

Le mécanisme est doté d'un système de freinage qui comprend un ressort 11 dont les spires se trouvent disposées entre une portée cylindrique arrière 10b de la douille ou couronne 10 et une garniture annulaire de friction 12 collée ou autrement immobilisée contre la paroi interne du carter 1-2. Par ailleurs et comme plus particulièrement montré en fig. 2, la partie arrière de la bague 9 comporte, outre un moyen axial 9a percé en 9b pour assurer l'entraînement de l'embout usuel à section hexagonale des tambours de stores, un doigt radial 9c dont les faces longitudinales sont creusées d'entailles 9d. Ces entailles 9d sont des­tinées à accueillir les extrémités repliées 11a du ressort 11, lesquel­les extrémités pénètrent par des encoches 10c à l'intérieur d'une cham­bre 10d pratiquée dans la portée arrière 10b de la douille 10. Cette chambre 10d présente en section un profil semi-circulaire qui définit de la sorte une saillie 10e en forme de secteur.The mechanism is provided with a braking system which comprises a spring 11, the turns of which are arranged between a rear cylindrical surface 10b of the sleeve or crown 10 and an annular friction lining 12 glued or otherwise immobilized against the internal wall of the housing 1-2. Furthermore and as more particularly shown in FIG. 2, the rear part of the ring 9 comprises, in addition to an axial means 9 has pierced in 9 b to ensure the driving of the usual end-piece with hexagonal section of the blind drums, a radial finger 9 c whose longitudinal faces are hollowed out notches 9 d . These notches 9 d are intended to accommodate the folded ends 11 a of the spring 11, which ends penetrate by notches 10 c inside a chamber 10 d formed in the rear bearing surface 10 b of the sleeve 10. This chamber 10 d has in section a semi-circular profile which thus defines a sector-shaped projection 10 e .

On comprend sans peine que lorsque la douille ou couronne 10 est libre de tourner dans le carter 1-2 alors que l'arbre 4 est lui-même entraîné en rotation par le moto-réducteur, les pignons 56 tournoient sans rouler sur eux-mêmes en se comportant comme de simples organes de liaison et en entraînant donc la douille précitée en même temps que la bague 9. Le rapport de transmission est alors de 1/1.It is easily understood that when the sleeve or crown 10 is free to rotate in the casing 1-2 while the shaft 4 is itself driven in rotation by the gear motor, the pinions 56 rotate without rolling on themselves by behaving like simple connecting members and therefore driving the aforementioned socket at the same time as the ring 9. The transmission ratio is then 1/1.

Par contre, si l'on suppose maintenant que la douille 10 est immobilisée angulairement, les pignons 5 vont être contraints, tout en étant encore animés d'un mouvement de révolution, de tourner sur eux-mêmes par suite de la denture fixe 10a, en introduisant un rapport de démultiplication dans la liaison avec la bague 9.By cons, if we now assume that the sleeve 10 is immobilized angularly, the pinions 5 will be forced, while still being driven by a movement of revolution, to rotate on themselves as a result of the fixed toothing 10 a , by introducing a gear ratio in the connection with the ring 9.

Le diamètre du fil qui forme le ressort 11 est tel qu'à la position de repos, c'est-à-dire lorsque ledit ressort n'est soumis à aucun effort, il porte simultanément contre la garniture 12 et contre la portée 10b de la douille 10, si bien que celle-ci est immobilisée angulairement.The diameter of the wire which forms the spring 11 is such that in the rest position, that is to say when said spring is not subjected to any force, it bears simultaneously against the lining 12 and against the bearing surface 10 b of the socket 10, so that the latter is immobilized angularly.

Dans ces conditions, quand le moto-réducteur associé à l'arbre 4 est mis en fonctionnement, la bague de sortie 9 est entraînée avec une forte démultiplication. C'est la position illustrée en fig. 3 qui fait bien ressortir que le doigt 9c peut se déplacer dans la chambre 10d suivant une amplitude d'environ 180° avant de venir en butée contre l'une ou l'autre des extrémités repliées 11a du ressort 11.Under these conditions, when the geared motor associated with the shaft 4 is put into operation, the output ring 9 is driven with a high gear reduction. This is the position illustrated in fig. 3 which clearly shows that the finger 9 c can move in the chamber 10 d according to an amplitude of approximately 180 ° before coming into abutment against one or the other of the folded ends 11 a of the spring 11.

A un moment donné de sa course angulaire (fig. 4), le doigt 9c vient prendre appui contre une extrémité 11a qui s'engage dans l'entaille 9d qui lui fait face. Avant de buter contre la face latérale de la saillie ou secteur 10e, le doigt 9c repousse l'extrémité 11a, ce qui a pour effet de resserrer radialement vers l'intérieur le ressort 11 dont les spires, en se comprimant contre la portée 10b, libèrent la douille ou couronne 10. Celle-ci est en conséquence entraînée en rotation par le doigt 9c (voir fig. 5), si bien que la démultiplication cesse immédiate­ment et que le tambour du store, entraîné à pleine vitesse, peut assurer l'enroulement ou le déroulement rapide des liens associés aux lames.At a given moment in its angular travel (fig. 4), the finger 9 c comes to bear against an end 11 a which engages in the notch 9 d which faces it. Before abutting against the lateral face of the projection or sector 10 e , the finger 9 c pushes the end 11 a , which has the effect of tightening radially inwards the spring 11 including the turns, by compressing against the reach 10 b , release the sleeve or crown 10. The latter is consequently driven in rotation by the finger 9 c (see fig. 5), so that the gear reduction stops immediately and the awning drum, driven at full speed , can ensure the winding or rapid unrolling of the links associated with the blades.

Une fois le store arrêté à la hauteur désirée, l'utilisateur peut à nou­veau commander le moto-réducteur dans un sens ou dans l'autre pour pro­ céder au réglage de l'orientation des lames. Les pignons satellites 5 interviennent par suite de l'immobilisation angulaire de la douille 10, de telle sorte que le tambour est entraîné à vitesse démultipliée très réduite, en permettant ainsi un réglage parfaitement précis.Once the blind stopped at the desired height, the user can again control the gear motor in one direction or the other to pro yield to the adjustment of the orientation of the blades. The planet gears 5 intervene as a result of the angular immobilization of the sleeve 10, so that the drum is driven at very reduced speed, thereby allowing perfectly precise adjustment.

Il va de soi qu'on pourrait imaginer d'autres systèmes pour le freinage de la douille 10, en dépit de la simplicité et de la fiabilité du dispo­sitif qui a été exposé ci-dessus. On comprend en particulier qu'il peut être avantageux de prévoir deux ressorts 11 à sens d'enroulement oppo­sés, montés côte à côte sur la portée 10b et dont les extrémités exté­rieures repliées 11a traversent radialement celle-ci pour coopérer sé­lectivement avec le doigt 9c de la bague 9, tandis que les extrémités centrales sont rendues solidaires du secteur 10e.It goes without saying that one could imagine other systems for braking the socket 10, despite the simplicity and reliability of the device which has been described above. It is understood in particular that it may be advantageous to provide two springs 11 with opposite winding directions, mounted side by side on the seat 10 b and whose folded outer ends 11 a radially pass through it to cooperate selectively with the finger 9 c of the ring 9, while the central ends are made integral with the sector 10 e .

On conçoit par ailleurs que le mécanisme réducteur suivant l'invention est susceptible d'être aussi bien réalisé comme un appareil accessoire propre à être interposé entre un dispositif de fermeture usuel et son motoréducteur d'entraînement, que comme un ensemble apte à être directement incorporé à un dispositif spécialement établi à cet effet.It will also be understood that the reduction mechanism according to the invention is capable of being produced as well as an accessory device suitable for being interposed between a usual closing device and its drive geared motor, as well as as an assembly capable of being directly incorporated to a device specially established for this purpose.

Claims (4)

1. Mécanisme réducteur pour la commande des dispositifs de fermeture dans lesquels le même organe moteur assure par rotation le déplacement du tablier et le réglage fin du tamisage de la lumière passant à travers celui-ci, caractérisé en ce qu'il comprend un pignon planétaire (4b) qui est lié à l'organe d'entraînement du store et qui coopére avec au moins un pignon satellite (5) porté par une bague de sortie (9) et engrenant avec la denture d'une couronne (10) dont l'immobilisation angulaire est opérée à l'aide d'un dispositif de freinage (11-12) actionné par la bague précitée à l'occasion de chaque mise en rotation du pignon plané­taire sus-mentionné.1. Reducing mechanism for controlling the closing devices in which the same motor member rotates the movement of the apron and the fine adjustment of the screening of the light passing through it, characterized in that it comprises a planetary pinion (4 b ) which is linked to the drive member of the blind and which cooperates with at least one satellite pinion (5) carried by an output ring (9) and meshing with the teeth of a crown (10) of which the angular immobilization is operated using a braking device (11-12) actuated by the aforementioned ring on the occasion of each rotation of the aforementioned planetary pinion. 2. Mécanisme suivant la revendication 1, caractérisé en ce que la cou­ronne est constituée par une douille (10) qui est dentée intérieurement (10a) et qui renferme la bague de sortie (9).2. Mechanism according to claim 1, characterized in that the crown is constituted by a bush (10) which is internally toothed (10 a ) and which encloses the outlet ring (9). 3. Mécanisme suivant la revendication 2, caractérisé en ce que le dis­positif de freinage comprend au moins un ressort (11) dont les spires sont disposées entre une garniture fixe de friction (12) et une portée (10b) de la couronne dentée (10), tandis que ses extrémités (11a) sont repliées vers l'intérieur pour pénétrer à l'intérieur de la couronne dentée (10) et coopérer avec un doigt radial (9c) de la bague précitée.3. Mechanism according to claim 2, characterized in that the braking device comprises at least one spring (11) whose turns are arranged between a fixed friction lining (12) and a bearing surface (10 b ) of the toothed crown ( 10), while its ends (11 a ) are folded inwardly to penetrate inside the toothed ring (10) and cooperate with a radial finger (9 c ) of the aforementioned ring. 4. Mécanisme suivant la revendication 3, caractérisé en ce que le doigt radial (9c), creusé d'entailles (9d) aptes à coopérer avec les extrémi­tés repliées (11a) du ressort (11), est logé dans une chambre (10d) de la couronne (10), laquelle chambre comporte une saillie (10e) contre les deux parois opposées de laquelle peut venir porter ledit doigt.4. Mechanism according to claim 3, characterized in that the radial finger (9 c ), hollowed out of notches (9 d ) capable of cooperating with the folded ends (11 a ) of the spring (11), is housed in a chamber (10 d ) of the crown (10), which chamber has a projection (10 e ) against the two opposite walls from which said finger can come.
EP88420131A 1987-04-24 1988-04-22 Two-speed reduction mechanism to operate adjustable light access closing devices of the kind of lamellar blinds with tiltable slats, and the like Withdrawn EP0293307A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8706049 1987-04-24
FR8706049A FR2614359B1 (en) 1987-04-24 1987-04-24 TWO-SPEED REDUCING MECHANISM FOR CONTROLLING CLOSING DEVICES WITH ADJUSTABLE BRIGHTNESS, OF THE TYPE OF DIRECTIONAL AND SIMILAR BLINDS

Publications (1)

Publication Number Publication Date
EP0293307A1 true EP0293307A1 (en) 1988-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420131A Withdrawn EP0293307A1 (en) 1987-04-24 1988-04-22 Two-speed reduction mechanism to operate adjustable light access closing devices of the kind of lamellar blinds with tiltable slats, and the like

Country Status (4)

Country Link
US (1) US4848433A (en)
EP (1) EP0293307A1 (en)
JP (1) JP2542234B2 (en)
FR (1) FR2614359B1 (en)

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AU607379B2 (en) * 1988-02-29 1991-02-28 Shade-O-Matic Limited Venetian blind control
CN103169430A (en) * 2011-12-23 2013-06-26 乐金电子(天津)电器有限公司 Dust collection barrel provided with speed-changing compressed structure

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DE4131478A1 (en) * 1991-09-21 1993-03-25 Benthin Management Gmbh VERTICAL BLINDS WITH ONE-ORGAN DRIVE
US5573472A (en) * 1993-06-07 1996-11-12 Ciolli; Donald A. Wrap spring downshift mechanism
US5399129A (en) * 1993-06-07 1995-03-21 Ciolli; Donald A. Wrap spring downshift mechanism
DE4328699A1 (en) * 1993-08-26 1995-03-02 Warema Renkhoff Gmbh & Co Kg Gear mechanism on the drawing-up shaft of a sunshade screen
DE4328698A1 (en) * 1993-08-26 1995-03-02 Warema Renkhoff Gmbh & Co Kg Gear mechanism on the drawing-up shaft of a sunshade screen
DK23095A (en) * 1995-03-06 1996-09-07 Rasmussen Kann Ind As Shield arrangement drive
FR2749361B1 (en) * 1996-05-28 1998-08-07 Somfy REDUCER WITH HOLDAM COUPLING
DE19953200A1 (en) * 1999-11-05 2001-05-10 Valeo Auto Electric Gmbh Tubular motor
JP2001336588A (en) * 2000-05-26 2001-12-07 Harmonic Drive Syst Ind Co Ltd Cup type wave gear device
KR200283750Y1 (en) * 2001-11-30 2002-07-27 김화순 Clutch for reducing a winding speed of blind
KR200300422Y1 (en) * 2002-09-09 2003-01-14 김선구 A electric power operator of rolling door
GB2418449A (en) * 2004-09-27 2006-03-29 Louver Lite Ltd Control unit for window blind including intermediate gearing
CN103584703B (en) * 2013-11-11 2015-12-09 芜湖美特美机械科技有限公司 Electrically driven curtain limiting hand end
CN105020341A (en) * 2015-07-28 2015-11-04 张洲 Composite type transmission
FR3087817B1 (en) * 2018-10-26 2020-11-13 Somfy Activites Sa ELECTROMECHANICAL ACTUATOR AND HOME AUTOMATION SYSTEM INCLUDING SUCH AN ACTUATOR

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FR2217519A1 (en) * 1973-02-13 1974-09-06 Schenker Storen Maschf
FR2286270A1 (en) * 1974-09-30 1976-04-23 Franciaflex Blind with slat runners having single control - has two planetary gear clutch assemblies
FR2296752A1 (en) * 1974-12-31 1976-07-30 Gross Hans Slatted curtains drive mechanism - with clear track between main and second secondary drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU607379B2 (en) * 1988-02-29 1991-02-28 Shade-O-Matic Limited Venetian blind control
CN103169430A (en) * 2011-12-23 2013-06-26 乐金电子(天津)电器有限公司 Dust collection barrel provided with speed-changing compressed structure

Also Published As

Publication number Publication date
US4848433A (en) 1989-07-18
JPS6452991A (en) 1989-03-01
JP2542234B2 (en) 1996-10-09
FR2614359B1 (en) 1989-07-21
FR2614359A1 (en) 1988-10-28

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