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EP0748921A1 - Motorised roll-up device equipped with an adjustable automatic stop - Google Patents

Motorised roll-up device equipped with an adjustable automatic stop Download PDF

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Publication number
EP0748921A1
EP0748921A1 EP96810319A EP96810319A EP0748921A1 EP 0748921 A1 EP0748921 A1 EP 0748921A1 EP 96810319 A EP96810319 A EP 96810319A EP 96810319 A EP96810319 A EP 96810319A EP 0748921 A1 EP0748921 A1 EP 0748921A1
Authority
EP
European Patent Office
Prior art keywords
motor
flange
screw
blind
winding device
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Withdrawn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
EP96810319A
Other languages
German (de)
French (fr)
Inventor
Jean-Michel Perache
Jean Jacques Marie De Chevron Villette
Eric Lagarde
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.)
Somfy SA
Original Assignee
Somfy SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Somfy SA filed Critical Somfy SA
Publication of EP0748921A1 publication Critical patent/EP0748921A1/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Withdrawn legal-status Critical Current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
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6854—Control using sensors sensing torque
    • 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
    • E06B2009/6809—Control
    • E06B2009/6872—Control using counters to determine shutter position
    • E06B2009/6881—Mechanical counters

Definitions

  • the subject of the present invention is a device for winding a windable element such as a blind, rolling shutter or the like, comprising a winding tube inside which are housed an electric motor and a speed reducer mounted in a casing. tubular fixed by one of its ends on a flange intended to be fixed on a support, as well as means for coupling the reducer to the winding tube, means for automatically stopping the motor when the blind is completely rolled up, and means for automatically stopping the motor when the blind has reached a desired state of unwinding, the device further comprising means for detecting motor blockage causing the motor to stop in the event of detection of such blockage, and means for adjusting the engine stopping point corresponding to the desired unwinding state.
  • a windable element such as a blind, rolling shutter or the like
  • Winding devices are known in which the automatic stopping of the motor is ensured by a revolution counting device consisting of a screw driven by the reduction gear and on which is mounted a sliding nut immobilized in rotation and actuating a switch at the end. a certain movement along the screw, actuation of the switch corresponding to the desired stopping point.
  • a revolution counting device consisting of a screw driven by the reduction gear and on which is mounted a sliding nut immobilized in rotation and actuating a switch at the end. a certain movement along the screw, actuation of the switch corresponding to the desired stopping point.
  • two sliding nuts are provided, each moving on a screw and each cooperating with a switch corresponding respectively to the top stop point and the bottom blind stop point (DE 28 49 512, FR 2 076 529 ).
  • the adjustment of the breakpoints is carried out by manually driving each of the screws in rotation.
  • Another known device (FR 1 487 414) comprises a single sliding nut cooperating with two switches themselves mounted on screws making it possible to move
  • Winding devices are also known in which the rolling element is stopped by detecting a drop in the speed of movement of the rolling element (EP 0 533 625, EP 0 573 388). Such devices require relatively expensive detection means and processing electronics.
  • the object of the invention is to produce a winding device comprising means for stopping the windable element in the high and low position, mechanically simple, robust and compact means ensuring in all circumstances a complete winding of the windable element and uniform in the case of several rollable elements arranged side by side.
  • the winding device is characterized in that it comprises, mounted in said tubular casing, a screw driven by said reduction gear and carrying a sliding nut immobilized in rotation and at least one fixed and non-adjustable stop, and in that said flange is rotatably mounted on said support, means being provided for immobilizing the flange on its support, stopping the motor, when the roll-up element is completely rolled up, being ensured by detecting the blocking of the motor itself caused by the abutment of the end of the roll-up element, stopping the motor when the windable element has reached the desired state of unwinding being ensured by the detection of the motor blocking caused by the arrival of the sliding nut against one of the stops, the adjustment of the corresponding stopping point being effected by manual drive in rotation of said flange.
  • the means for immobilizing the flange on its support may consist of a simple locking screw. It is also possible to use a locking means serving at the same time as a means of driving the rotating flange, for example a screw mounted transversely in the flange and cooperating with a helical toothing formed on the periphery of a fixed cylindrical stud. around which the flange can rotate.
  • the adjustment of the bottom breakpoint of the windable element is therefore carried out by the rotational drive of the casing containing the motor and the worm screw and nut device, that is to say by the rotary drive means usually used only to immobilize the sliding sliding nut.
  • the rotary drive means usually used only to immobilize the sliding sliding nut As can be seen, this way of doing things, combined with a stop in the high position by detecting the blocking of the motor, allows a construction to be obtained. particularly simple.
  • the setting of the bottom breakpoint will be described in the context of the description of an embodiment.
  • the engine is stopped by detecting its blocking can be done by any means of detecting or analyzing a variation of an electrical quantity linked to the mechanical blocking of the rotor of the motor, in particular by one of the devices described in the documents cited above.
  • Figure 1 is a partial view in axial section of a winding device.
  • Figure 2 is a partial view of a first alternative embodiment.
  • Figure 3 is a partial view of a second alternative embodiment.
  • the winding device shown in Figure 1 is mounted in a box 1 itself mounted, for example, in a window frame not shown. It comprises a winding tube 2 closed at one of its ends by a flange 3 provided with a journal 4 rotating in a bearing 5 formed in a plate 6 fixed to the box by screws 7.
  • the other end of the tube winding 2 is rotatably mounted on a cylindrical surface of a flange 8 via a ring 9 with a low coefficient of friction fixed to the winding tube 2.
  • the flange 8 has a second cylindrical surface 10 engaged in a cylindrical recess 11a of a stud 11 provided with a square hole in which is engaged a square 12 of a support plate 13 fixed to the box 1.
  • a tubular casing 14 On the flange 8 is fixed a tubular casing 14 containing a geared motor assembly 15 equipped with an electromagnetic brake operating by absence of current or of a other braking means, for example a non-return device as described, for example, in patent FR 2 610 668, and a sheath 16 in the form of a pot fixed to the tubular casing 14 and the bottom 17 of which is located at the end of the tubular casing 14.
  • This sheath 16 is crossed axially by the output shaft 18 of the gear motor at the end of which is fixed a disc 19 on which the winding tube 2 is fixed by screws.
  • the output shaft 18 extending inside the sheath 16 is threaded so as to constitute a screw 20 on which is mounted a sliding nut 21 provided with a tooth 22 engaged in a longitudinal groove 23 formed in the interior wall sheath 16 and having the effect of e prevent the sliding nut 21 from rotating while allowing it to move axially along the screw 20.
  • the cylindrical surface 10 of the flange 8 has a helical peripheral toothing 24.
  • a screw 25 axially immobilized in the stud 11 and in engagement with the helical toothing 24 of the flange 8.
  • This screw 25 can be actuated from the outside using a wrench or screwdriver. The actuation of the screw 25 has the effect of driving the flange 8 and with it the tubular casing 14 in rotation in the stud 11.
  • a blind 26 On the winding tube 2 is wound a blind 26 provided with a load bar 27 at its end.
  • the geared motor 15 is configured so that the sliding nut 21 is in abutment against the bottom 17 of the sleeve 16. In all cases, the sliding nut 21 is brought into this position before the awning 26 is hooked on the winding tube 2. The blind 26 is then hung on the winding tube 2 so that it is completely unwound. The motor is then actuated so as to wind the blind 26. The sliding nut 21 then moves away from the bottom 17. When the blind 26 is completely wound, the load bar 27 abuts against two bearing surfaces 28 of the box 1. This has the effect of blocking the motor, which leads to an overconsumption of current which is detected by an electric detection circuit fitted to the motor, this detection circuit cutting the power supply to the motor. The blind is thus, for sure, perfectly rolled up and its load bar 27 does not exceed the box.
  • the motor is then actuated in the other direction so as to unwind the blind 26.
  • the sliding nut 21 moves in the direction of the bottom 17 of the sleeve.
  • the detection circuit again detects an over-consumption of current, which has the effect of cutting off the power supply to the motor as previously.
  • the awning then occupies in principle the initial unrolled position. It is however possible to perfect the adjustment of the stopping point (bottom) corresponding to the desired unwinding position by acting on the screw 25.
  • the motor not supplied, being blocked by its brake, the actuation of the screw 25 a the effect of driving the tubular casing 14 in rotation and with him the geared motor 15, the sheath 16 and the winding tube 2 by the output shaft 18.
  • the screw 25 cannot be driven by the torque exerted on the flange 8, it simultaneously ensures the blocking of this flange.
  • the winding device shown in Figure 1 is in principle intended to be mounted in a single and determined direction, the low point is always determined by the stop formed by the bottom 17 of the sleeve, although the reducer itself can be used as a stop.
  • the sleeve 16 will be replaced by two opposite pot-shaped sleeves 16a and 16b as shown in FIG. 2, l 'sliding nut 21 can abut either against the bottom 17a of one of the sleeves or against the bottom 17b of the other sleeve.
  • the fixed stud 11 is provided with one or two needle screws 29 coming to bear radially in a groove 30 of the flange 8. In this case, to perfect the adjustment of the point down, the winding tube is driven directly by hand.
  • the sliding nut 21 is preferably provided on its front face with a stud 30, as shown in phantom, intended to come into abutment laterally against a stud 31 provided on the bottom of the sheath 16. This execution mode allows better precision of the breakpoint.

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

Abstract

The winding roller for a blind (26) comprises a winding tube (2) inside which are housed, in a tubular casing (14), an electric motor and speed reduction gear. One end of the casing is fixed by a flange to rotate on a support (13). A coupling (19) joins the reduction gear to the winding tube. An automatic motor stop comes into action when the blind is completely wound and when it is unwound by a desired amount. In the tubular casing is a screw (20), driven by the reduction gear, carrying a loose nut (21) prevented from rotating and a non adjustable fixed stop (17) limiting the travel of the nut in one direction along the screw. The motor is stopped when the blind is completely wound by the detection of motor braking caused by the stop (28) coming into contact with the end (27) of the blind. Stopping of the motor when the blind has attained its required unwound state occurs by detecting motor braking caused by the arrival of the nut against the fixed stop.

Description

La présente invention a pour objet un dispositif d'enroulement d'un élément enroulable tel que store, volet roulant ou similaires, comprenant un tube d'enroulement à l'intérieur duquel sont logés un moteur électrique et un réducteur de vitesse montés dans un carter tubulaire fixé par l'une de ses extrémités sur un flasque destiné à être fixé sur un support, ainsi que des moyens d'accouplement du réducteur au tube d'enroulement, des moyens d'arrêt automatique du moteur lorsque le store est complètement enroulé, et des moyens d'arrêt automatique du moteur lorsque le store a atteint un état de déroulement désiré, le dispositif comprenant en outre des moyens de détection du blocage du moteur provoquant l'arrêt du moteur en cas de détection d'un tel blocage, et des moyens de réglage du point d'arrêt du moteur correspondant à l'état de déroulement désiré.The subject of the present invention is a device for winding a windable element such as a blind, rolling shutter or the like, comprising a winding tube inside which are housed an electric motor and a speed reducer mounted in a casing. tubular fixed by one of its ends on a flange intended to be fixed on a support, as well as means for coupling the reducer to the winding tube, means for automatically stopping the motor when the blind is completely rolled up, and means for automatically stopping the motor when the blind has reached a desired state of unwinding, the device further comprising means for detecting motor blockage causing the motor to stop in the event of detection of such blockage, and means for adjusting the engine stopping point corresponding to the desired unwinding state.

On connaît des dispositifs d'enroulement dans lesquels l'arrêt automatique du moteur est assuré par un dispositif de comptage de tours constitué d'une vis entraînée par le réducteur et sur laquelle est monté un écrou baladeur immobilisé en rotation et actionnant un interrupteur au bout d'un certain déplacement le long de la vis, l'actionnement de l'interrupteur correspondant au point d'arrêt désiré. Dans certains de ces dispositifs, il est prévu deux écrous baladeurs se déplaçant chacun sur une vis et coopérant chacun avec un interrupteur correspondant respectivement au point d'arrêt haut et au point d'arrêt bas store (DE 28 49 512, FR 2 076 529). Le réglage des points d'arrêt s'effectue en entraînant manuellement chacune des vis en rotation. Un autre dispositif connu (FR 1 487 414) comporte un seul écrou baladeur coopérant avec deux interrupteurs montés eux-mêmes sur des vis permettant de les déplacer pour effectuer le réglage des points d'arrêt haut et bas.Winding devices are known in which the automatic stopping of the motor is ensured by a revolution counting device consisting of a screw driven by the reduction gear and on which is mounted a sliding nut immobilized in rotation and actuating a switch at the end. a certain movement along the screw, actuation of the switch corresponding to the desired stopping point. In some of these devices, two sliding nuts are provided, each moving on a screw and each cooperating with a switch corresponding respectively to the top stop point and the bottom blind stop point (DE 28 49 512, FR 2 076 529 ). The adjustment of the breakpoints is carried out by manually driving each of the screws in rotation. Another known device (FR 1 487 414) comprises a single sliding nut cooperating with two switches themselves mounted on screws making it possible to move them in order to adjust the top and bottom stopping points.

Malgré les possibilités de réglage offerte par ces dispositifs d'enroulement connus, ceux-ci présentent l'inconvénient qu'ils ne tiennent pas compte des variations dimensionnelles de l'élément enroulable, variations dues à l'usure des pièces mécaniques et à l'évolution des conditions hygrométriques dans lesquelles ils évoluent, la longueur des stores en toile variant notamment avec le taux d'humidité de l'air. Si le taux d'humidité est faible, la toile s'allonge et cet allongement, conjugué avec les évolutions structurelles de l'installation, a pour résultat que des modifications dans les positions hautes d'arrêt de l'élément enroulable apparaissent. Dans le cas où plusieurs de ces éléments enroulables sont disposés côte à côte sur une façade d'immeuble, par exemple, les éléments ne sont pas complètement enroulés en position d'arrêt tous les points d'arrêt sont différents les uns des autres, ce qui est particulièrement disgracieux. Si le taux d'humidité est important, on obtient à l'usage plutôt une diminution de longueur de la toile, dont la conséquence est un arrêt mécanique par butée sur la partie haute de l'installation, avant l'arrêt électrique. L'inconvénient est que le moteur reste sous tension, au rythme du cycle de la sécurité thermique s'il en est équipé, et qu'il se détériore rapidement. En outre, le réglage des points d'arrêt s'effectue au moyen d'une mécanique relativement compliquée et fragile.Despite the adjustment possibilities offered by these known winding devices, they have the drawback that they do not take account of the dimensional variations of the windable element, variations due to the wear of the mechanical parts and to the evolution of the hygrometric conditions in which they evolve, the length of the canvas blinds varying in particular with the humidity of the air. If the humidity is low, the fabric becomes longer and this lengthening, combined with the structural changes in the installation, results in modifications in the high stop positions of the rollable element appear. In the case where several of these windable elements are arranged side by side on a building facade, for example, the elements are not completely wound in the stop position, all the breakpoints are different from each other, this which is particularly unsightly. If the humidity is high, we obtain rather a reduction in length of the fabric in use, the consequence of which is a mechanical stop by a stop on the upper part of the installation, before the electric stop. The disadvantage is that the engine remains energized, at the rate of the thermal safety cycle if fitted, and that it deteriorates rapidly. In addition, the adjustment of the breakpoints is carried out by means of a relatively complicated and fragile mechanism.

Il a été proposé d'assurer un arrêt en position complètement enroulée au moyen d'un interrupteur actionné directement par le store lorsqu'il est complètement enroulé (DE 1 763 272). Une telle solution nécessite toutefois de tirer des fils entre le moteur et l'interrupteur. Dans ce dispositif, le point d'arrêt bas est assuré par un dispositif de comptage de tours constitué d'une vis et d'un écrou baladeur actionnant un interrupteur. Aucun moyen de réglage n'est prévu.It has been proposed to ensure a stop in the fully rolled up position by means of a switch actuated directly by the blind when it is fully rolled up (DE 1,763,272). However, such a solution requires drawing wires between the motor and the switch. In this device, the bottom stopping point is provided by a revolution counting device consisting of a screw and a sliding nut actuating a switch. No means of adjustment is provided.

On connaît également des dispositifs d'enroulement dans lesquels l'arrêt de l'élément enroulable est assuré par la détection d'une baisse de vitesse de déplacement de l'élément enroulable (EP 0 533 625, EP 0 573 388). De tels dispositifs exigent des moyens de détection et une électronique de traitement relativement coûteux.Winding devices are also known in which the rolling element is stopped by detecting a drop in the speed of movement of the rolling element (EP 0 533 625, EP 0 573 388). Such devices require relatively expensive detection means and processing electronics.

On connaît en outre divers dispositifs détectant le freinage ou le blocage d'un moteur par la détection d'une surintensité de courant (JP 42 50 286, DE 42 44378), la détection d'une variation de vitesse (DE 44 01 463) ou d'une chute de tension sur la phase auxiliaire d'un moteur asynchrone (DE 43 12 987) ou aux bornes du condensateur de déphasage (EP 0 551 053).We also know various devices detecting the braking or blocking of a motor by the detection of an overcurrent (JP 42 50 286, DE 42 44378), the detection of a speed variation (DE 44 01 463) or of a voltage drop on the auxiliary phase of an asynchronous motor (DE 43 12 987) or at the terminals of the phase shift capacitor (EP 0 551 053).

L'invention a pour but de réaliser un dispositif d'enroulement comprenant des moyens d'arrêt de l'élément enroulable en position haute et basse, moyens mécaniquement simples, robustes et compacts assurant en toutes circonstances un enroulement complet de l'élément enroulable et uniforme dans le cas de plusieurs éléments enroulables disposés côte à côte.The object of the invention is to produce a winding device comprising means for stopping the windable element in the high and low position, mechanically simple, robust and compact means ensuring in all circumstances a complete winding of the windable element and uniform in the case of several rollable elements arranged side by side.

Le dispositif d'enroulement selon l'invention est caractérisé en ce qu'il comprend, montée dans ledit carter tubulaire, une vis entraînée par ledit réducteur et portant un écrou baladeur immobilisé en rotation et au moins une butée fixe et non réglable, et en ce que ledit flasque est monté rotativement sur ledit support, des moyens étant prévus pour immobiliser le flasque sur son support, l'arrêt du moteur, lorsque l'élément enroulable est complètement enroulé, étant assuré par la détection du blocage du moteur lui-même provoqué par la venue en butée de l'extrémité de l'élément enroulable, l'arrêt du moteur lorsque l'élément enroulable a atteint l'état de déroulement désiré étant assuré par la détection du blocage du moteur provoqué par l'arrivée de l'écrou baladeur contre l'une des butées, le réglage du point d'arrêt correspondant s'effectuant par l'entraînement manuel en rotation dudit flasque.The winding device according to the invention is characterized in that it comprises, mounted in said tubular casing, a screw driven by said reduction gear and carrying a sliding nut immobilized in rotation and at least one fixed and non-adjustable stop, and in that said flange is rotatably mounted on said support, means being provided for immobilizing the flange on its support, stopping the motor, when the roll-up element is completely rolled up, being ensured by detecting the blocking of the motor itself caused by the abutment of the end of the roll-up element, stopping the motor when the windable element has reached the desired state of unwinding being ensured by the detection of the motor blocking caused by the arrival of the sliding nut against one of the stops, the adjustment of the corresponding stopping point being effected by manual drive in rotation of said flange.

Les moyens d'immobilisation du flasque sur son support peuvent être constitués d'une simple vis de blocage. Il est également possible d'utiliser un moyen de blocage servant en même temps de moyen d'entraînement du flasque en rotation, par exemple une vis montée transversalement dans le flasque et coopérant avec une denture hélicoïdale formée sur le pourtour d'un plot cylindrique fixe autour duquel le flasque peut tourner.The means for immobilizing the flange on its support may consist of a simple locking screw. It is also possible to use a locking means serving at the same time as a means of driving the rotating flange, for example a screw mounted transversely in the flange and cooperating with a helical toothing formed on the periphery of a fixed cylindrical stud. around which the flange can rotate.

Le réglage du point d'arrêt bas de l'élément enroulable s'effectue donc par l'entraînement en rotation du carter contenant le moteur et le dispositif à vis et écrou baladeur, c'est-à-dire par l'entraînement en rotation du moyen habituellement utilisé uniquement pour immobiliser l'écrou baladeur en rotation. Comme on peut le constater, cette manière de faire, combinée avec un arrêt en position haute par détection du blocage du moteur permet d'obtenir une construction particulièrement simple. Le réglage du point d'arrêt bas sera décrit dans le cadre de la description d'un mode d'exécution. L'arrêt du moteur par détection de son blocage peut se faire par tout moyen de détection ou d'analyse d'une variation d'une grandeur électrique liée au blocage mécanique du rotor du moteur, en particulier par l'un des dispositifs décrits dans les documents cités plus haut.The adjustment of the bottom breakpoint of the windable element is therefore carried out by the rotational drive of the casing containing the motor and the worm screw and nut device, that is to say by the rotary drive means usually used only to immobilize the sliding sliding nut. As can be seen, this way of doing things, combined with a stop in the high position by detecting the blocking of the motor, allows a construction to be obtained. particularly simple. The setting of the bottom breakpoint will be described in the context of the description of an embodiment. The engine is stopped by detecting its blocking can be done by any means of detecting or analyzing a variation of an electrical quantity linked to the mechanical blocking of the rotor of the motor, in particular by one of the devices described in the documents cited above.

Le dessin annexé représente, à titre d'exemple, un mode d'exécution du dispositif selon l'invention, ainsi que deux variantes de celui-ci.The accompanying drawing shows, by way of example, an embodiment of the device according to the invention, as well as two variants of it.

La figure 1 est une vue partielle en coupe axiale d'un dispositif d'enroulement.Figure 1 is a partial view in axial section of a winding device.

La figure 2 est une vue partielle d'une première variante d'exécution.Figure 2 is a partial view of a first alternative embodiment.

La figure 3 est une vue partielle d'une seconde variante d'exécution.Figure 3 is a partial view of a second alternative embodiment.

Le dispositif d'enroulement représenté à la figure 1 est monté dans un caisson 1 lui-même monté, par exemple, dans une embrasure de fenêtre non représentée. Il comprend un tube d'enroulement 2 fermé à l'une de ses extrémités par un flasque 3 muni d'un tourillon 4 tournant dans un palier 5 formé dans une plaque 6 fixée au caisson par des vis 7. L'autre extrémité du tube d'enroulement 2 est montée rotativement sur une portée cylindrique d'un flasque 8 par l'intermédiaire d'une bague 9 à faible coefficient de frottement fixée au tube d'enroulement 2. Le flasque 8 présente une seconde portée cylindrique 10 engagée dans une creusure cylindrique 11a d'un plot 11 muni d'un trou carré dans lequel est engagé un carré 12 d'une plaque-support 13 fixée au caisson 1. Sur le flasque 8 est fixé un carter tubulaire 14 contenant un ensemble moto-réducteur 15 équipé d'un frein électromagnétique opérant par absence de courant ou d'un autre moyen de freinage, par exemple un dispositif anti-retour tel que décrit, par exemple, dans le brevet FR 2 610 668, et un fourreau 16 en forme de pot fixé au carter tubulaire 14 et dont le fond 17 est situé à l'extrémité du carter tubulaire 14. Ce fourreau 16 est traversé axialement par l'arbre de sortie 18 du moto-réducteur à l'extrémité duquel est fixé un disque 19 sur lequel est fixé par des vis le tube d'enroulement 2. La partie de l'arbre de sortie 18 s'étendant à l'intérieur du fourreau 16 est filetée de manière à constituer une vis 20 sur laquelle est monté un écrou baladeur 21 muni d'une dent 22 engagée dans une rainure longitudinale 23 formée dans la paroi intérieure du fourreau 16 et ayant pour effet d'empêcher la rotation de l'écrou baladeur 21 tout en permettant son déplacement axial le long de la vis 20.The winding device shown in Figure 1 is mounted in a box 1 itself mounted, for example, in a window frame not shown. It comprises a winding tube 2 closed at one of its ends by a flange 3 provided with a journal 4 rotating in a bearing 5 formed in a plate 6 fixed to the box by screws 7. The other end of the tube winding 2 is rotatably mounted on a cylindrical surface of a flange 8 via a ring 9 with a low coefficient of friction fixed to the winding tube 2. The flange 8 has a second cylindrical surface 10 engaged in a cylindrical recess 11a of a stud 11 provided with a square hole in which is engaged a square 12 of a support plate 13 fixed to the box 1. On the flange 8 is fixed a tubular casing 14 containing a geared motor assembly 15 equipped with an electromagnetic brake operating by absence of current or of a other braking means, for example a non-return device as described, for example, in patent FR 2 610 668, and a sheath 16 in the form of a pot fixed to the tubular casing 14 and the bottom 17 of which is located at the end of the tubular casing 14. This sheath 16 is crossed axially by the output shaft 18 of the gear motor at the end of which is fixed a disc 19 on which the winding tube 2 is fixed by screws. the output shaft 18 extending inside the sheath 16 is threaded so as to constitute a screw 20 on which is mounted a sliding nut 21 provided with a tooth 22 engaged in a longitudinal groove 23 formed in the interior wall sheath 16 and having the effect of e prevent the sliding nut 21 from rotating while allowing it to move axially along the screw 20.

La portée cylindrique 10 du flasque 8 présente une denture périphérique hélicoïdale 24. Dans le plot 11 est montée transversalement une vis 25 immobilisée axialement dans le plot 11 et en prise avec la denture hélicoïdale 24 du flasque 8. Cette vis 25 est actionnable de l'extérieur au moyen d'une clé ou d'un tournevis. L'actionnement de la vis 25 a pour effet d'entraîner le flasque 8 et avec lui le carter tubulaire 14 en rotation dans le plot 11.The cylindrical surface 10 of the flange 8 has a helical peripheral toothing 24. In the stud 11 is transversely mounted a screw 25 axially immobilized in the stud 11 and in engagement with the helical toothing 24 of the flange 8. This screw 25 can be actuated from the outside using a wrench or screwdriver. The actuation of the screw 25 has the effect of driving the flange 8 and with it the tubular casing 14 in rotation in the stud 11.

Sur le tube d'enroulement 2 vient s'enrouler un store 26 muni d'une barre de charge 27 à son extrémité.On the winding tube 2 is wound a blind 26 provided with a load bar 27 at its end.

L'installation du dispositif d'enroulement et le réglage du point d'arrêt bas s'effectue de la manière suivante :The installation of the winding device and the adjustment of the bottom breakpoint is carried out as follows:

Avant montage, le moto-réducteur 15 est configuré pour que l'écrou baladeur 21 soit en butée contre le fond 17 du fourreau 16. Dans tous les cas, l'écrou baladeur 21 est amené dans cette position avant l'accrochage du store 26 sur le tube d'enroulement 2. Le store 26 est ensuite accroché sur le tube d'enroulement 2 de manière qu'il soit complètement déroulé. On actionne ensuite le moteur de manière à enrouler le store 26. L'écrou baladeur 21 s'éloigne alors du fond 17. Lorsque le store 26 est complètement enroulé, la barre de charge 27 vient en butée contre deux portées 28 du caisson 1. Ceci a pour effet de bloquer le moteur, ce qui entraîne une surconsommation de courant qui est détectée par un circuit électrique de détection équipant le moteur, ce circuit de détection coupant l'alimentation du moteur. Le store est ainsi, à coup sûr, parfaitement enroulé et sa barre de charge 27 ne dépasse pas le caisson.Before mounting, the geared motor 15 is configured so that the sliding nut 21 is in abutment against the bottom 17 of the sleeve 16. In all cases, the sliding nut 21 is brought into this position before the awning 26 is hooked on the winding tube 2. The blind 26 is then hung on the winding tube 2 so that it is completely unwound. The motor is then actuated so as to wind the blind 26. The sliding nut 21 then moves away from the bottom 17. When the blind 26 is completely wound, the load bar 27 abuts against two bearing surfaces 28 of the box 1. This has the effect of blocking the motor, which leads to an overconsumption of current which is detected by an electric detection circuit fitted to the motor, this detection circuit cutting the power supply to the motor. The blind is thus, for sure, perfectly rolled up and its load bar 27 does not exceed the box.

On actionne ensuite le moteur dans l'autre sens de manière à dérouler le store 26. L'écrou baladeur 21 se déplace en direction du fond 17 du fourreau. Lorsqu'il arrive en butée contre le fond 17, le moteur est bloqué et le circuit de détection détecte à nouveau une surconsommation de courant, ce qui a pour effet de couper l'alimentation du moteur comme précédemment. Le store occupe alors en principe la position déroulée initiale. Il est toutefois possible de parfaire le réglage du point d'arrêt (bas) correspondant à la position de déroulement désirée en agissant sur la vis 25. Le moteur, non alimenté, étant bloqué par son frein, l'actionnement de la vis 25 a pour effet d'entraîner le carter tubulaire 14 en rotation et avec lui le moto-réducteur 15, le fourreau 16 et le tube d'enroulement 2 par l'arbre de sortie 18. Au moyen de la vis 25, on peut ainsi enrouler ou dérouler légèrement le store 26. La vis 25 ne pouvant être entraînée par le couple exercé sur le flasque 8, elle assure simultanément le blocage de ce flasque.The motor is then actuated in the other direction so as to unwind the blind 26. The sliding nut 21 moves in the direction of the bottom 17 of the sleeve. When it comes into abutment against the bottom 17, the motor is blocked and the detection circuit again detects an over-consumption of current, which has the effect of cutting off the power supply to the motor as previously. The awning then occupies in principle the initial unrolled position. It is however possible to perfect the adjustment of the stopping point (bottom) corresponding to the desired unwinding position by acting on the screw 25. The motor, not supplied, being blocked by its brake, the actuation of the screw 25 a the effect of driving the tubular casing 14 in rotation and with him the geared motor 15, the sheath 16 and the winding tube 2 by the output shaft 18. By means of the screw 25, it is thus possible to wind or slightly unwind the blind 26. The screw 25 cannot be driven by the torque exerted on the flange 8, it simultaneously ensures the blocking of this flange.

Le dispositif d'enroulement représenté à la figure 1 est en principe prévu pour être monté dans un sens unique et déterminé, le point bas étant toujours déterminé par la butée constituée par le fond 17 du fourreau, bien que le réducteur lui-même puisse être utilisé comme butée. Toutefois, si l'on désire que le dispositif d'enroulement puisse être monté indifféremment dans un sens ou dans l'autre, le fourreau 16 sera remplacé par deux fourreaux en forme de pot opposés 16a et 16b comme représenté à la figure 2, l'écrou baladeur 21 pouvant venir buter soit contre le fond 17a de l'un des fourreaux ou contre le fond 17b de l'autre fourreau.The winding device shown in Figure 1 is in principle intended to be mounted in a single and determined direction, the low point is always determined by the stop formed by the bottom 17 of the sleeve, although the reducer itself can be used as a stop. However, if it is desired that the winding device can be mounted indifferently in one direction or the other, the sleeve 16 will be replaced by two opposite pot-shaped sleeves 16a and 16b as shown in FIG. 2, l 'sliding nut 21 can abut either against the bottom 17a of one of the sleeves or against the bottom 17b of the other sleeve.

L'immobilisation du flasque 8 en rotation pourrait être assurée par d'autres moyens. Selon une forme d'exécution simplifiée représentée à la figure 3, le plot fixe 11 est muni d'une ou deux vis pointeaux 29 venant s'appuyer radialement dans une gorge 30 du flasque 8. Dans ce cas, pour parfaire le réglage du point bas, on entraîne le tube d'enroulement directement à la main.Immobilization of the rotating flange 8 could be ensured by other means. According to a simplified embodiment shown in Figure 3, the fixed stud 11 is provided with one or two needle screws 29 coming to bear radially in a groove 30 of the flange 8. In this case, to perfect the adjustment of the point down, the winding tube is driven directly by hand.

Au lieu de venir axialement en butée contre le fond du fourreau 16, l'écrou baladeur 21 est de préférence muni sur sa face frontale d'un téton 30, tel que représenté en trait mixte, destiné à venir en butée latéralement contre un téton 31 prévu sur le fond du fourreau 16. Ce mode d'exécution permet d'obtenir une meilleure précision du point d'arrêt.Instead of coming axially into abutment against the bottom of the sheath 16, the sliding nut 21 is preferably provided on its front face with a stud 30, as shown in phantom, intended to come into abutment laterally against a stud 31 provided on the bottom of the sheath 16. This execution mode allows better precision of the breakpoint.

Claims (7)

Dispositif d'enroulement d'un élément enroulable tel que store, volet roulant ou similaires, comprenant un tube d'enroulement (2) à l'intérieur duquel sont logés un moteur électrique et un réducteur de vitesse (15) montés dans un carter tubulaire (14) fixé par l'une de ses extrémités sur un flasque destiné à être fixé sur un support (13), ainsi que des moyens d'accouplement (19) du réducteur au tube d'enroulement, des moyens d'arrêt automatique du moteur lorsque l'élément enroulable (26) est complètement enroulé et des moyens d'arrêt automatique du moteur lorsque l'élément enroulable a atteint un état de déroulement désiré, le dispositif d'enroulement comprenant en outre des moyens de détection d'un blocage du moteur provoquant l'arrêt du moteur en cas de détection d'un tel blocage et des moyens de réglage du point d'arrêt du moteur correspondant à l'état de déroulement désiré, caractérisé en ce qu'il comprend, montée dans ledit carter tubulaire (14), une vis (20) entraînée par ledit réducteur et portant un écrou baladeur (21) immobilisé en rotation et au moins une butée fixe non réglable (17; 31) limitant la course de l'écrou baladeur dans l'un des sens de son déplacement le long de la vis, et en ce que ledit flasque (8) est monté rotativement sur ledit support, des moyens (24, 25 ; 29) étant prévus pour immobiliser le flasque sur son support, l'arrêt du moteur lorsque l'élément enroulable est complètement enroulé, étant assuré par la détection d'un blocage du moteur lui-même provoqué par la venue en butée (28) de l'extrémité (27) de l'élément enroulable, l'arrêt du moteur, lorsque le store a atteint l'état de déroulement désiré, étant assuré par la détection d'un blocage du moteur provoqué par l'arrivée de l'écrou baladeur (21) contre la butée (17 ; 31), le réglage du point d'arrêt correspondant s'effectuant par l'entraînement manuel en rotation dudit flasque.Winding device for a rolling element such as a blind, rolling shutter or the like, comprising a winding tube (2) inside which are housed an electric motor and a speed reducer (15) mounted in a tubular casing (14) fixed by one of its ends on a flange intended to be fixed on a support (13), as well as means of coupling (19) of the reducer to the winding tube, means of automatically stopping the motor when the windable element (26) is fully wound up and means for automatically stopping the motor when the windable element has reached a desired unwinding state, the winding device further comprising means for detecting a blockage of the engine causing the engine to stop in the event of detection of such a blockage and of the means for adjusting the stopping point of the engine corresponding to the desired unwinding state, characterized in that it comprises, mounted in said casing tubular (14), a screw (20) driven by said reduction gear and carrying a sliding nut (21) immobilized in rotation and at least one non-adjustable fixed stop (17; 31) limiting the travel of the sliding nut in one of the directions of its displacement along the screw, and in that said flange (8) is rotatably mounted on said support, means (24, 25; 29) being provided to immobilize the flange on its support, stopping the motor when the windable element is completely wound, being ensured by the detection of a blockage of the motor itself caused by the abutment (28) of the end (27) of the windable element, the motor stopping, when the blind has reached the desired state of unwinding, being ensured by the detection of a motor blockage caused by the arrival of the nut player (21) against the stop (17; 31), the adjustment of the corresponding stopping point being effected by the manual drive in rotation of said flange. Dispositif d'enroulement selon la revendication 1, caractérisé en ce que ledit flasque (8) présente une portée cylindrique (10) par laquelle le flasque est monté rotativement dans un plot fixe (11).Winding device according to claim 1, characterized in that said flange (8) has a cylindrical surface (10) by which the flange is rotatably mounted in a fixed stud (11). Dispositif d'enroulement selon la revendication 2, caractérisé en ce que les moyens d'immobilisation du flasque (8) en rotation sur son support sont constitués d'une vis (25) montée transversalement dans ledit plot fixe (11) et en prise avec une denture hélicoïdale périphérique (24) dudit flasque (8).Winding device according to claim 2, characterized in that the means for immobilizing the flange (8) in rotation on its support consist of a screw (25) mounted transversely in said fixed stud (11) and engaged with a peripheral helical toothing (24) of said flange (8). Dispositif d'enroulement selon la revendication 2, caractérisé en ce que les moyens d'immobilisation du flasque (8) sur son support sont constitués par au moins une vis (29) montée dans le plot fixe (11) et venant en butée contre ledit flasque (8).Winding device according to claim 2, characterized in that the means for immobilizing the flange (8) on its support consist of at least one screw (29) mounted in the fixed stud (11) and abutting against said flange (8). Dispositif d'enroulement selon l'une des revendications 1 à 4, caractérisé en ce que la vis (20) portant l'écrou baladeur est montée dans un fourreau constitué d'un pot cylindrique (16) dont la paroi interne présente un profil longitudinal (23) coopérant avec un profil conjugué (22) de l'écrou baladeur pour guider cet écrou et l'immobiliser en rotation, la butée étant constituée ou portée par le fond (17) du fourreau.Winding device according to one of claims 1 to 4, characterized in that the screw (20) carrying the sliding nut is mounted in a sheath consisting of a cylindrical pot (16) whose internal wall has a longitudinal profile (23) cooperating with a conjugate profile (22) of the sliding nut to guide this nut and immobilize it in rotation, the stop being formed or carried by the bottom (17) of the sleeve. Dispositif d'enroulement selon l'une des revendications 1 à 4, caractérisé en ce que la vis (20) portant l'écrou baladeur est montée dans un fourreau constitué de deux pots cylindriques opposés (16a, 16b) dont les parois intérieures présentent un profil longitudinal (23a, 23b) coopérant avec un profil conjugué de l'écrou baladeur pour le guidage de cet écrou et son immobilisation en rotation, les fonds (17a, 17b) de ces pots constituant ou portant des butées opposées.Winding device according to one of claims 1 to 4, characterized in that the screw (20) carrying the sliding nut is mounted in a sheath consisting of two opposite cylindrical pots (16a, 16b) whose inner walls have a longitudinal profile (23a, 23b) cooperating with a conjugate profile of the sliding nut for guiding this nut and immobilizing it in rotation, the bottoms (17a , 17b) of these pots constituting or carrying opposite stops. Dispositif d'enroulement selon l'une des revendications 1 à 6, caractérisé en ce que la vis (20) portant l'écrou baladeur constitue simultanément l'arbre de sortie du réducteur et de transmission des mouvements au tube d'enroulement.Winding device according to one of claims 1 to 6, characterized in that the screw (20) carrying the sliding nut simultaneously constitutes the output shaft of the reducer and of transmitting movements to the winding tube.
EP96810319A 1995-06-14 1996-05-21 Motorised roll-up device equipped with an adjustable automatic stop Withdrawn EP0748921A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507084A FR2735520B1 (en) 1995-06-14 1995-06-14 MOTORIZED WINDING DEVICE OF A ROLLABLE ELEMENT AS STORE, ROLLING SHUTTER EQUIPPED WITH ADJUSTABLE AUTOMATIC STOPS
FR9507084 1995-06-14

Publications (1)

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EP0748921A1 true EP0748921A1 (en) 1996-12-18

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EP96810319A Withdrawn EP0748921A1 (en) 1995-06-14 1996-05-21 Motorised roll-up device equipped with an adjustable automatic stop

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US (1) US5709349A (en)
EP (1) EP0748921A1 (en)
JP (1) JPH094348A (en)
ES (1) ES2104538T1 (en)
FR (1) FR2735520B1 (en)

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CN107128751B (en) * 2017-06-20 2024-02-20 吉林市佰润商贸有限公司 Long-stroke round trip driving system for winding and unwinding
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Also Published As

Publication number Publication date
JPH094348A (en) 1997-01-07
US5709349A (en) 1998-01-20
FR2735520A1 (en) 1996-12-20
ES2104538T1 (en) 1997-10-16
FR2735520B1 (en) 1997-08-22

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