EP0775798A1 - Rotational drive device for the take-up element of a roller shutter - Google Patents

Rotational drive device for the take-up element of a roller shutter Download PDF

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Publication number
EP0775798A1
EP0775798A1 EP96420336A EP96420336A EP0775798A1 EP 0775798 A1 EP0775798 A1 EP 0775798A1 EP 96420336 A EP96420336 A EP 96420336A EP 96420336 A EP96420336 A EP 96420336A EP 0775798 A1 EP0775798 A1 EP 0775798A1
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EP
European Patent Office
Prior art keywords
sleeve
drive device
brake
flange
drum
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
EP96420336A
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German (de)
French (fr)
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EP0775798B1 (en
Inventor
Christophe Bresson
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Simu SAS
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Simu SAS
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Publication date
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Publication of EP0775798A1 publication Critical patent/EP0775798A1/en
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Publication of EP0775798B1 publication Critical patent/EP0775798B1/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
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B9/74—Operating devices or mechanisms, e.g. with electric drive adapted for selective electrical or manual operation
    • 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
    • E06B9/76—Operating devices or mechanisms, e.g. with electric drive using crank handles

Definitions

  • the invention relates to a device for rotating the winding drum of a rolling shutter and a rolling shutter comprising such a device.
  • the patent application FR.A.2 455 160 discloses a device for driving a roller shutter in which, when it is necessary to use the manual control, a rotation is made about its axis of rotation. casing containing both an electric motor and its braking system. This device therefore requires providing that this casing must be able to rotate about its axis, which implies rotating electrical connections and special mechanical connections in order to allow this kind of movement. This device is therefore complex, which increases its cost and predisposes it to operating failures.
  • DE-A-35 044 489 discloses a manual control device for an electrically driven roller shutter in which a frame is resiliently pushed and carries a brake shoe, a second shoe which can be driven in rotation through a blocking unit.
  • the reduction ratio obtained is low and it is necessary to make the control rod perform a large number of turns in order to control the rotation of the flap.
  • the blocking unit is offset from the axis of the shutter winding tube, so that the angular position of the control rod is imposed, which is not without difficulty when the establishment of such a rolling shutter.
  • US-A-4 651 940 discloses a particularly complex and therefore expensive device, in which a support element connected to a central shaft has a support surface capable of cooperating with a disc controlled in translation by an electromagnet.
  • the presence of an electromagnet significantly increases the cost price of the system and the risk of failure.
  • the reducer used does not allow easy manipulation of the roller shutter by its manual control.
  • the invention solves the problems of the prior art thanks to a device for driving in rotation a winding element of a roller shutter which is relatively simple to manufacture and easy to use.
  • a device for driving a roller shutter winding element in rotation comprising an electric motor, essentially consisting of a stator and a rotor, and a brake, intended to prevent the rotation of said element. winding with respect to a fixed casing when said motor is not activated, said brake comprising at least one member, integral in rotation with said rotor and intended to cooperate with at least one blocking element carried by a flange, said motor and said brake being mounted inside said fixed casing, characterized in that it comprises a fixed crown relative to said casing and a sleeve cooperating with said flange and said crown to form a planetary gear, said sleeve being able to be locked in rotation relative to said crown by means of a brake spring.
  • the invention it is not necessary to provide complex drive systems for the motor shaft, which makes it possible to produce a simple and economical device. It also allows easy maneuvering when using the manual control since it is not necessary to overcome significant friction forces.
  • the crown, the sleeve and the flange form a planetary gear which constitutes an effective reducer for the transmission of movement from the sleeve to the flange when the latter is to be driven in rotation for manual control of the roller shutter.
  • the device comprises a drum connected to a manual control element and coaxial with the flange, the sleeve and the crown. Thanks to this aspect of the invention, the manual drive movement is effectively transmitted from the manual control element such as, for example, a rod connected to a crank, to the flange.
  • the manual control element such as, for example, a rod connected to a crank
  • the brake spring is disposed between on the one hand the crown and on the other hand the drum and the sleeve.
  • This construction makes it possible to have a large surface area for the brake spring inside the drive device, which enables it to effectively block the flange in rotation.
  • the envelope of the brake spring is able to expand radially during the application to the drum of a torque transmitted by the sleeve.
  • the envelope of the brake spring does not expand radially during the transmission of a torque from the drum to the sleeve.
  • the drum is surrounded over most of its circumference by a collar of the sleeve.
  • This collar serves as the central core of the brake spring.
  • the winding element can be a cylinder or a disc supporting the deck.
  • the blocking element can be constituted by one or two pads in the form of a crown and the member integral with the rotor is a ring, a disc or a plate.
  • the invention finally relates to a rolling shutter comprising a drive device as described above.
  • the device of FIG. 1 comprises a fixed casing 1, in which is placed an electric motor 2 supplied with current by electrical conductors 3.
  • the fixed casing has here the shape of a cylindrical tube with circular section but any tube, cylindrical or not, whatever its section, would be compatible with the invention.
  • the output shaft 4 of the electric motor 2 is engaged with a reduction gear 5 the output of which is fixed in rotation at the center of a disc 6 at the periphery of which is mounted a winding cylinder 7 of the bulkhead, not shown of a roller shutter.
  • the winding cylinder 7 will be driven to wind or unwind the roller shutter deck.
  • this assembly comprises, in particular, a metal ring 11 fixed in rotation relative to the shaft 4, but capable of sliding axially on this shaft.
  • a spiral spring 12 mounted around the shaft 4 bearing against the rotor 2a of the electric motor 2 and against the internal face of the ring 11 tends to separate the ring 11 from the rotor of the electric motor 2.
  • the electric motor 2 n is not activated, no current flows in its rotor 2a and the ring 11 is subjected to the sole force of the spring 12, which moves it away from the electric motor.
  • the electric motor is running, the current in the rotor 2a of the electric motor induces magnetic forces which tend to attract the ring 11 towards the rotor and to move it in the direction of the latter.
  • the ring 11 is terminated, at its end furthest from the rotor 2a of the electric motor 2, by a surface 13 substantially orthogonal to the axis of the shaft 4. Furthermore, a disc 14 is mounted fixed in rotation and in translation relative to the shaft 4 by means of an elastic pin 15. The distance between the disc 14 and the ring 11 therefore varies according to the position of the ring 11 relative to the rotor of the electric motor.
  • Two pins 16 and 16 ' are mounted in holes in the disc 14 and the ring 11; they carry a plate or plate 17 which they can drive in rotation.
  • the disc 14 and the plate 17 are integral with the rotor 2 a .
  • a flange 18 carries one or two pads 19 and 19 ′ in the form of a crown, immobilized in rotation relative to the latter and arranged inside the space between the disc 14 and the ring 11, on either side of the free plate 17.
  • the operation of the brake motor is as follows: When the electric motor 2 is activated, the magnetic forces induced in the rotor 2a attract the ring 11 towards the rotor, so that the disc 14 and the ring 11 are separated enough so that the contact between the plate 17, the disc 14 and the ring 11 on the one hand, and the pads 19 and 19 'on the other hand is not blocking. On the contrary, when the motor 2 is not activated, the spring 12 pushes the ring 11 in abutment against the pad 19 ', the ring 11 therefore presses the pad 19' against the plate 17 which is pressed itself against the pad 19 in abutment against the disc 14. In this way, the rotational movement of the ring 11 is prevented by the friction generated between the parts 14, 17, 19, 19 'and 11. The shaft 4 which is integral in rotation with the ring 11 is therefore also locked in rotation. Thus, when the electric motor 2 is not activated, it is braked by the entire structure 10. We speak of a brake motor.
  • the device further comprises means for driving the flange 18 in rotation inside the fixed casing 1.
  • These means comprise a rod 20 connected at its outer end to a bevel gear, itself connected to a crank 21 likely to be taken over by a user.
  • the end of the rod 20 closest to the brake motor is provided with external grooves allowing it to be fixed in rotation inside a drive drum 22.
  • the drum 22 is provided with a lug 23. Over the greater part of its circumference not corresponding to the angular sector occupied by the lug 23, the drum 22 is surrounded by a flange 24 d 'a sleeve 25.
  • the sleeve 25 carries two axes of rotation 26 and 26' of two toothed wheels 27 and 27 '.
  • the wheels 27 and 27 ' are the satellites of a planetary gear centered on the flange 18.
  • the teeth of the toothed wheels 27 and 27' are engaged with teeth formed on the one hand on a crown 29 fixed inside the casing 1 and on the other hand on the flange 18.
  • the flange 18 is mounted inside the ring 29, the contact between the external cylindrical surface of the flange 18 and the internal cylindrical surface of the ring 29 being a sliding contact.
  • an internal cylindrical part of the crown 29 is disposed around the drive drum 22 of the flange 24 and of the sleeve 25.
  • a brake spring 30 is arranged in the space annular located between the crown 29, on the one hand, and the drum 22 or the sleeve 25 on the other hand.
  • the rod 20 is rotated by means of the crank manipulated by the user.
  • the drum 22 is then driven in rotation and the latter rotates the sleeve 25 without being prevented by the spring 30 according to what has been seen previously.
  • the sleeve 25, the axes 26 and 26 ', the toothed wheels 27 and 27' cause the flange 18 to rotate in the direction of rotation of the rod 20.
  • the shaft 4 being integral with the flange 18 thanks to the brake assembly 10, it is driven in rotation and thereby, the reduction gear 5, the disc 6 and the cylinder 7 are also set in motion.
  • roller shutter has been shown with a cylinder 7, but it can operate with one or more discs 6 connected directly to the roller shutter deck, in particular if the latter consists of slats or blades.
  • the invention has been presented with a brake-shoe motor, but it applies to any type of brake applicable to its technical field, and in particular to a dog clutch brake, the blocking element of which is constituted by the dog itself.

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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)
  • Braking Arrangements (AREA)

Abstract

The rotating drive for a shutter roller comprises an electric motor (2) with a stator and rotor (2a). A brake (10) prevents rotation of the roller relative to a fixed casing (1) when the motor is inactive. The brake comprises a part (11,14) fixed to rotate with the rotor which engages locking parts (19,19') carried by a flange (18). The motor and the brake are mounted inside the casing. A crown wheel (29) is fixed to the casing and a sleeve (25) engages with the flange and the crown wheel to form planetary gearing. The sleeve is rotationally locked relative to the crown wheel by a brake spring (30). A drum (22) connected to a manual control (20) is coaxial with the flange, the sleeve and the crown wheel.

Description

L'invention concerne un dispositif d'entraînement en rotation du tambour d'enroulement d'un volet roulant et un volet roulant comprenant un tel dispositif.The invention relates to a device for rotating the winding drum of a rolling shutter and a rolling shutter comprising such a device.

Il est connu d'actionner un volet roulant au moyen d'un moteur électrique, cependant en cas de défaillance du moteur électrique ou de coupure de l'alimentation en courant du secteur, il est nécessaire de pouvoir manoeuvrer manuellement le volet roulant.It is known to actuate a rolling shutter by means of an electric motor, however in the event of a failure of the electric motor or of interruption of the current supply to the sector, it is necessary to be able to manually operate the rolling shutter.

Par la demande de brevet FR.A.2 455 160, on connaît un dispositif d'entraînement d'un volet roulant dans lequel, lorsqu'il est nécessaire d'utiliser la commande manuelle, on fait tourner autour de son axe de rotation un carter contenant à la fois un moteur électrique et son système de freinage. Ce dispositif nécessite donc de prévoir que ce carter doit pouvoir tourner autour de son axe, ce qui implique des connexions électriques tournantes et des liaisons mécaniques particulières afin de permettre ce genre de mouvement. Ce dispositif est donc complexe, ce qui majore son coût et le prédispose aux pannes de fonctionnement.The patent application FR.A.2 455 160 discloses a device for driving a roller shutter in which, when it is necessary to use the manual control, a rotation is made about its axis of rotation. casing containing both an electric motor and its braking system. This device therefore requires providing that this casing must be able to rotate about its axis, which implies rotating electrical connections and special mechanical connections in order to allow this kind of movement. This device is therefore complex, which increases its cost and predisposes it to operating failures.

On connaît, par la demande de brevet DE-A-1 201 719, un dispositif dans lequel le mouvement imprimé par la commande manuelle est transmis à l'arbre mobile au moyen d'un train d'engrenages planétaires. Ce système met en oeuvre une transmission complexe comprenant de nombreux engrenages, dont une roue creuse et une vis particulièrement coûteuses.Known from patent application DE-A-1 201 719, a device in which the movement imparted by manual control is transmitted to the movable shaft by means of a planetary gear train. This system implements a complex transmission comprising numerous gears, including a hollow wheel and a particularly expensive screw.

On connaît également, de la demande de brevet FR-A-2 270 193, un dispositif dans lequel l'actionnement de la commande manuelle déplace axialement un organe coulissant rotatif, lequel débraye le frein et embraye le rotor d'un moteur électrique. Le déplacement axial de l'organe coulissant est obtenu contre un moyen élastique constitué par un ressort de rappel et grâce à l'effet d'un couple résistant de friction, dû à un patin de freinage, qui doit s'opposer en permanence au mouvement pour maintenir la position opérationnelle de l'organe rotatif coulissant. Ainsi, l'utilisateur qui actionne la commande manuelle doit vaincre à la fois le poids du volet et l'effort de friction dû au patin. Ceci rend la manoeuvre pénible et nécessite des efforts importants de la part de l'utilisateur.Also known, from patent application FR-A-2 270 193, is a device in which the actuation of the manual control axially displaces a rotary sliding member, which disengages the brake and engages the rotor of an electric motor. The axial displacement of the sliding member is obtained against an elastic means constituted by a return spring and thanks to the effect of a resisting friction torque, due to a braking pad, which must constantly oppose the movement to maintain the operational position of the sliding rotary member. Thus, the user who actuates the manual control must overcome both the weight of the shutter and the friction force due to the pad. This makes the operation painful and requires significant effort on the part of the user.

DE-A-35 044 489 divulgue un dispositif de commande manuelle d'un volet roulant entraîné électriquement dans lequel une armature est poussée élastiquement et porte un patin de frein, un second patin pouvant être entraîné en rotation à travers une unité de blocage. Le rapport de démultiplication obtenu est faible et il est nécessaire de faire effectuer à la tige de commande un grand nombre de tours afin de commander la rotation du volet. En outre, l'unité de blocage est décalée par rapport à l'axe du tube d'enroulement du volet, de sorte que la position angulaire de la tige de commande est imposée, ce qui n'est pas sans poser des difficultés lors de la mise en place d'un tel volet roulant.DE-A-35 044 489 discloses a manual control device for an electrically driven roller shutter in which a frame is resiliently pushed and carries a brake shoe, a second shoe which can be driven in rotation through a blocking unit. The reduction ratio obtained is low and it is necessary to make the control rod perform a large number of turns in order to control the rotation of the flap. In addition, the blocking unit is offset from the axis of the shutter winding tube, so that the angular position of the control rod is imposed, which is not without difficulty when the establishment of such a rolling shutter.

US-A-4 651 940 divulgue un dispositif particulièrement complexe, donc onéreux, dans lequel un élément de support relié à un arbre central présente une surface d'appui apte à coopérer avec un disque commandé en translation par un électro-aimant. La présence d'un électro-aimant augmente sensiblement le prix de revient du système et le risque de panne. De plus, le réducteur utilisé ne permet pas une manipulation aisée du volet roulant par sa commande manuelle.US-A-4 651 940 discloses a particularly complex and therefore expensive device, in which a support element connected to a central shaft has a support surface capable of cooperating with a disc controlled in translation by an electromagnet. The presence of an electromagnet significantly increases the cost price of the system and the risk of failure. In addition, the reducer used does not allow easy manipulation of the roller shutter by its manual control.

L'invention résoud les problèmes de l'art antérieur grâce à un dispositif d'entraînement en rotation d'un élément d'enroulement d'un volet roulant relativement simple à fabriquer et d'une utilisation aisée.The invention solves the problems of the prior art thanks to a device for driving in rotation a winding element of a roller shutter which is relatively simple to manufacture and easy to use.

Elle concerne un dispositif d'entraînement en rotation d'un élément d'enroulement de tablier de volet roulant comprenant un moteur électrique, constitué essentiellement d'un stator et d'un rotor, et un frein, destiné à empêcher la rotation dudit élément d'enroulement par rapport à un carter fixe lorsque ledit moteur n'est pas activé, ledit frein comprenant au moins un organe, solidaire en rotation dudit rotor et destiné à coopérer avec au moins un élément de blocage porté par un flasque, ledit moteur et ledit frein étant montés à l'intérieur dudit carter fixe, caractérisé en ce qu'il comprend une couronne fixe par rapport audit carter et un manchon coopérant avec ledit flasque et ladite couronne pour former un engrenage planétaire, ledit manchon étant apte à être bloqué en rotation par rapport à ladite couronne au moyen d'un ressort frein.It relates to a device for driving a roller shutter winding element in rotation comprising an electric motor, essentially consisting of a stator and a rotor, and a brake, intended to prevent the rotation of said element. winding with respect to a fixed casing when said motor is not activated, said brake comprising at least one member, integral in rotation with said rotor and intended to cooperate with at least one blocking element carried by a flange, said motor and said brake being mounted inside said fixed casing, characterized in that it comprises a fixed crown relative to said casing and a sleeve cooperating with said flange and said crown to form a planetary gear, said sleeve being able to be locked in rotation relative to said crown by means of a brake spring.

Grâce à l'invention, il n'est pas nécessaire de prévoir des systèmes complexes d'entraînement de l'arbre du moteur, ce qui permet de réaliser un dispositif simple et économique. Elle permet en outre une manoeuvre aisée lors de l'utilisation de la commande manuelle puisqu'il n'est pas nécessaire de vaincre des efforts de friction importants. La couronne, le manchon et le flasque forment un engrenage planétaire qui constitue un réducteur efficace pour la transmission du mouvement depuis le manchon jusqu'au flasque lorsque celui-ci doit être entraîné en rotation pour la commande manuelle du volet roulant.Thanks to the invention, it is not necessary to provide complex drive systems for the motor shaft, which makes it possible to produce a simple and economical device. It also allows easy maneuvering when using the manual control since it is not necessary to overcome significant friction forces. The crown, the sleeve and the flange form a planetary gear which constitutes an effective reducer for the transmission of movement from the sleeve to the flange when the latter is to be driven in rotation for manual control of the roller shutter.

Selon un premier aspect avantageux de l'invention, le dispositif comprend un tambour relié à un élément de commande manuelle et coaxial avec le flasque, le manchon et la couronne. Grâce à cet aspect de l'invention, le mouvement d'entraînement manuel est efficacement transmis de l'élément de commande manuelle tel que, par exemple, une tige reliée à une manivelle, jusqu'au flasque.According to a first advantageous aspect of the invention, the device comprises a drum connected to a manual control element and coaxial with the flange, the sleeve and the crown. Thanks to this aspect of the invention, the manual drive movement is effectively transmitted from the manual control element such as, for example, a rod connected to a crank, to the flange.

Selon un autre aspect avantageux de l'invention, le ressort frein est disposé entre d'une part la couronne et d'autre part le tambour et le manchon. Cette construction permet d'avoir une grande surface de portée du ressort frein à l'intérieur du dispositif d'entraînement ce qui lui permet de bloquer efficacement le flasque en rotation.According to another advantageous aspect of the invention, the brake spring is disposed between on the one hand the crown and on the other hand the drum and the sleeve. This construction makes it possible to have a large surface area for the brake spring inside the drive device, which enables it to effectively block the flange in rotation.

Selon un autre aspect avantageux de l'invention, l'enveloppe du ressort frein est apte à se dilater radialement lors de l'application au tambour d'un couple transmis par le manchon.According to another advantageous aspect of the invention, the envelope of the brake spring is able to expand radially during the application to the drum of a torque transmitted by the sleeve.

Selon un autre aspect de l'invention, l'enveloppe du ressort frein ne se dilate pas radialement lors de la transmission d'un couple du tambour au manchon.According to another aspect of the invention, the envelope of the brake spring does not expand radially during the transmission of a torque from the drum to the sleeve.

Selon un autre aspect avantageux de l'invention, le tambour est entouré sur la plus grande partie de sa circonférence par une collerette du manchon. Cette collerette sert de noyau central au ressort frein.According to another advantageous aspect of the invention, the drum is surrounded over most of its circumference by a collar of the sleeve. This collar serves as the central core of the brake spring.

Selon d'autres aspects avantageux de l'invention, l'élément d'enroulement peut être un cylindre ou un disque supportant le tablier.According to other advantageous aspects of the invention, the winding element can be a cylinder or a disc supporting the deck.

Selon un autre aspect avantageux de l'invention, l'élément de blocage peut être constitué par un ou deux patins en forme de couronne et l'organe solidaire du rotor est une bague, un disque ou un plateau.According to another advantageous aspect of the invention, the blocking element can be constituted by one or two pads in the form of a crown and the member integral with the rotor is a ring, a disc or a plate.

L'invention concerne enfin un volet roulant comprenant un dispositif d'entraînement tel que précédemment décrit.The invention finally relates to a rolling shutter comprising a drive device as described above.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un dispositif d'entraînement conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue en coupe du dispositif d'entraînement en rotation du tambour d'enroulement d'un volet roulant ;
  • La figure 2 est une vue agrandie du dispositif de frein de la figure 1 et
  • La figure 3 est une vue selon la ligne III-III de la figure 2.
The invention will be better understood and other advantages of it will appear more clearly in the light of the following description of an embodiment of a drive device in accordance with its principle, given solely by way of illustration. 'example and made with reference to the accompanying drawings in which:
  • Figure 1 is a sectional view of the rotational drive device for the winding drum of a roller shutter;
  • Figure 2 is an enlarged view of the brake device of Figure 1 and
  • Figure 3 is a view along line III-III of Figure 2.

Le dispositif de la figure 1 comprend un carter fixe 1, dans lequel est disposé un moteur électrique 2 alimenté en courant par des conducteurs électriques 3. Le carter fixe a ici une forme de tube cylindrique à section circulaire mais tout tube, cylindrique ou non, quelle que soit sa section, serait compatible avec l'invention. L'arbre de sortie 4 du moteur électrique 2 est en prise avec un réducteur 5 dont la sortie est fixée en rotation au centre d'un disque 6 à la périphérie duquel est monté un cylindre d'enroulement 7 du tablier non représenté d'un volet roulant. Ainsi, en fonction du sens de rotation de l'arbre de sortie 4 du moteur 2, le cylindre d'enroulement 7 sera entraîné pour enrouler ou dérouler le tablier du volet roulant.The device of FIG. 1 comprises a fixed casing 1, in which is placed an electric motor 2 supplied with current by electrical conductors 3. The fixed casing has here the shape of a cylindrical tube with circular section but any tube, cylindrical or not, whatever its section, would be compatible with the invention. The output shaft 4 of the electric motor 2 is engaged with a reduction gear 5 the output of which is fixed in rotation at the center of a disc 6 at the periphery of which is mounted a winding cylinder 7 of the bulkhead, not shown of a roller shutter. Thus, depending on the direction of rotation of the output shaft 4 of the motor 2, the winding cylinder 7 will be driven to wind or unwind the roller shutter deck.

A l'extrémité de l'arbre 4 opposée au réducteur 5 est disposé un ensemble 10 formant frein. Comme il apparaît à la figure 2, cet ensemble comprend, en particulier, une bague métallique 11 fixe en rotation par rapport à l'arbre 4, mais susceptible de coulisser axialement sur cet arbre. Un ressort spiral 12 monté autour de l'arbre 4 en appui contre le rotor 2a du moteur électrique 2 et contre la face interne de la bague 11 a tendance à écarter la bague 11 du rotor du moteur électrique 2. Lorsque le moteur électrique 2 n'est pas activé, aucun courant ne circule dans son rotor 2a et la bague 11 est soumise à la seule force du ressort 12, ce qui l'éloigne du moteur électrique. Au contraire, lorsque le moteur électrique fonctionne, le courant dans le rotor 2a du moteur électrique induit des forces magnétiques qui ont tendance à attirer la bague 11 vers le rotor et à la déplacer en direction de celui-ci.At the end of the shaft 4 opposite the reduction gear 5 is disposed an assembly 10 forming a brake. As it appears in FIG. 2, this assembly comprises, in particular, a metal ring 11 fixed in rotation relative to the shaft 4, but capable of sliding axially on this shaft. A spiral spring 12 mounted around the shaft 4 bearing against the rotor 2a of the electric motor 2 and against the internal face of the ring 11 tends to separate the ring 11 from the rotor of the electric motor 2. When the electric motor 2 n is not activated, no current flows in its rotor 2a and the ring 11 is subjected to the sole force of the spring 12, which moves it away from the electric motor. On the contrary, when the electric motor is running, the current in the rotor 2a of the electric motor induces magnetic forces which tend to attract the ring 11 towards the rotor and to move it in the direction of the latter.

La bague 11 est terminée, à son extrémité la plus éloignée du rotor 2a du moteur électrique 2, par une surface 13 sensiblement orthogonale à l'axe de l'arbre 4. Par ailleurs, un disque 14 est monté fixe en rotation et en translation par rapport à l'arbre 4 grâce à une goupille élastique 15. La distance entre le disque 14 et la bague 11 varie donc en fonction de la position de la bague 11 par rapport au rotor du moteur électrique. Deux goupilles 16 et 16' sont montées dans des trous du disque 14 et de la bague 11 ; elles portent une plaque ou plateau 17 qu'elles peuvent entraîner en rotation. Ainsi le disque 14 et la plaque 17 sont solidaires du rotor 2a. D'autre part, un flasque 18 porte un ou deux patins 19 et 19' en forme de couronne, immobilisés en rotation par rapport à celui-ci et disposés à l'intérieur de l'espace entre le disque 14 et la bague 11, de part et d'autre de la plaque libre 17.The ring 11 is terminated, at its end furthest from the rotor 2a of the electric motor 2, by a surface 13 substantially orthogonal to the axis of the shaft 4. Furthermore, a disc 14 is mounted fixed in rotation and in translation relative to the shaft 4 by means of an elastic pin 15. The distance between the disc 14 and the ring 11 therefore varies according to the position of the ring 11 relative to the rotor of the electric motor. Two pins 16 and 16 'are mounted in holes in the disc 14 and the ring 11; they carry a plate or plate 17 which they can drive in rotation. Thus the disc 14 and the plate 17 are integral with the rotor 2 a . On the other hand, a flange 18 carries one or two pads 19 and 19 ′ in the form of a crown, immobilized in rotation relative to the latter and arranged inside the space between the disc 14 and the ring 11, on either side of the free plate 17.

Le fonctionnement du moteur-frein est le suivant : Lorsque le moteur électrique 2 est activé, les forces magnétiques induites dans le rotor 2a attirent la bague 11 vers le rotor, de sorte que le disque 14 et la bague 11 sont écartés de manière suffisante pour que le contact entre la plaque 17, le disque 14 et la bague 11 d'une part, et les patins 19 et 19' d'autre part ne soit pas bloquant. Au contraire, lorsque le moteur 2 n'est pas activé, le ressort 12 repousse la bague 11 en appui contre le patin 19', la bague 11 presse donc le patin 19' contre la plaque 17 qui est pressée elle-même contre le patin 19 en appui contre le disque 14. De la sorte, le mouvement de rotation de la bague 11 est empêché par les frottements générés entre les pièces 14, 17, 19, 19' et 11. L'arbre 4 qui est solidaire en rotation de la bague 11 est donc lui aussi bloqué en rotation. Ainsi, lorsque le moteur électrique 2 n'est pas activé, il est freiné par l'ensemble de la structure 10. On parle de moteur-frein.The operation of the brake motor is as follows: When the electric motor 2 is activated, the magnetic forces induced in the rotor 2a attract the ring 11 towards the rotor, so that the disc 14 and the ring 11 are separated enough so that the contact between the plate 17, the disc 14 and the ring 11 on the one hand, and the pads 19 and 19 'on the other hand is not blocking. On the contrary, when the motor 2 is not activated, the spring 12 pushes the ring 11 in abutment against the pad 19 ', the ring 11 therefore presses the pad 19' against the plate 17 which is pressed itself against the pad 19 in abutment against the disc 14. In this way, the rotational movement of the ring 11 is prevented by the friction generated between the parts 14, 17, 19, 19 'and 11. The shaft 4 which is integral in rotation with the ring 11 is therefore also locked in rotation. Thus, when the electric motor 2 is not activated, it is braked by the entire structure 10. We speak of a brake motor.

Le dispositif comprend en outre des moyens d'entraînement du flasque 18 en rotation à l'intérieur du carter fixe 1. Ces moyens comprennent une tige 20 reliée à son extrémité extérieure à un renvoi d'angle, lui-même connecté à une manivelle 21 susceptible d'être prise en mains par un utilisateur. L'extrémité de la tige 20 la plus proche du moteur-frein est pourvue de cannelures extérieures lui permettant d'être fixée en rotation à l'intérieur d'un tambour d'entraînement 22.The device further comprises means for driving the flange 18 in rotation inside the fixed casing 1. These means comprise a rod 20 connected at its outer end to a bevel gear, itself connected to a crank 21 likely to be taken over by a user. The end of the rod 20 closest to the brake motor is provided with external grooves allowing it to be fixed in rotation inside a drive drum 22.

Comme il apparaît à la figure 3, le tambour 22 est muni d'un ergot 23. Sur la plus grande partie de sa circonférence ne correspondant pas au secteur angulaire occupé par l'ergot 23, le tambour 22 est entouré par une collerette 24 d'un manchon 25. Le manchon 25 porte deux axes de rotation 26 et 26' de deux roues dentées 27 et 27' . Les roues 27 et 27' sont les satellites d'un engrenage planétaire centré sur le flasque 18. Les dents des roues dentées 27 et 27' sont en prise avec des dentures formées d'une part sur une couronne 29 fixée à l'intérieur du carter 1 et d'autre part sur le flasque 18.As it appears in FIG. 3, the drum 22 is provided with a lug 23. Over the greater part of its circumference not corresponding to the angular sector occupied by the lug 23, the drum 22 is surrounded by a flange 24 d 'a sleeve 25. The sleeve 25 carries two axes of rotation 26 and 26' of two toothed wheels 27 and 27 '. The wheels 27 and 27 'are the satellites of a planetary gear centered on the flange 18. The teeth of the toothed wheels 27 and 27' are engaged with teeth formed on the one hand on a crown 29 fixed inside the casing 1 and on the other hand on the flange 18.

Sur l'essentiel de sa longueur, le flasque 18 est monté à l'intérieur de la couronne 29, le contact entre la surface cylindrique externe du flasque 18 et la surface cylindrique interne de la couronne 29 étant un contact glissant. D'autre part, une partie cylindrique interne de la couronne 29 est disposée autour du tambour d'entraînement 22 de la collerette 24 et du manchon 25. Ainsi que cela apparaît sur la figure 3, un ressort frein 30 est disposé dans l'espace annulaire situé entre la couronne 29, d'une part, et le tambour 22 ou le manchon 25 d'autre part.Over most of its length, the flange 18 is mounted inside the ring 29, the contact between the external cylindrical surface of the flange 18 and the internal cylindrical surface of the ring 29 being a sliding contact. On the other hand, an internal cylindrical part of the crown 29 is disposed around the drive drum 22 of the flange 24 and of the sleeve 25. As shown in FIG. 3, a brake spring 30 is arranged in the space annular located between the crown 29, on the one hand, and the drum 22 or the sleeve 25 on the other hand.

A cause de la présence du ressort 30, un couple provenant du tambour 22 peut être transmis au manchon 25 alors qu'un couple venant du manchon 25 ne peut être transmis au tambour 22. En effet, comme les extrémités du ressort 30 sont disposées dans les espaces radiaux situés entre l'ergot 23 de la couronne 22 et le manchon 25, un couple en provenance du manchon 25 a tendance à appliquer l'extrémité du ressort 30 sur l'ergot 23 et dilater radialement l'enveloppe du ressort qui vient en contact avec la couronne 29 et bloque ainsi tout mouvement. Au contraire, un mouvement de rotation ayant pour origine le tambour 22 et transmis par l'ergot 23 a tendance à plaquer l'une des extrémités du ressort 30 contre la collerette 24 du manchon 25 sans dilater l'enveloppe du ressort 30, et les mouvements de l'ensemble formé par le tambour 22 et le manchon 25 sont donc possibles à l'intérieur de la couronne fixe 29, puisque le ressort 30 ne s'oppose pas à la transmission d'un couple du tambour 22 au manchon 25, quel que soit le sens de ce couple.Due to the presence of the spring 30, a torque from the drum 22 can be transmitted to the sleeve 25 while a torque coming from the sleeve 25 cannot be transmitted to the drum 22. In fact, as the ends of the spring 30 are arranged in the radial spaces located between the lug 23 of the crown 22 and the sleeve 25, a torque from the sleeve 25 tends to apply the end of the spring 30 to the lug 23 and radially expand the envelope of the spring which comes into contact with the crown 29 and thus blocks any movement. On the contrary, a rotational movement originating from the drum 22 and transmitted by the lug 23 tends to press one of the ends of the spring 30 against the flange 24 of the sleeve 25 without expanding the envelope of the spring 30, and the movements of the assembly formed by the drum 22 and the sleeve 25 are therefore possible inside the fixed ring 29, since the spring 30 does not prevent the transmission of a torque from the drum 22 to the sleeve 25, whatever the meaning of this couple.

Le fonctionnement est le suivant : Si le moteur 2 n'est pas activé, on a vu précédemment que la bague 11 et le disque 14 compriment les patins 19 et 19' de sorte qu'une rotation de l'arbre 4 aurait tendance à faire tourner le flasque 18. Si le flasque 18 est entraîné en rotation, il a tendance à faire tourner les roues dentées 27 et 27' qui sont elles-mêmes en prise avec la denture de la couronne 29. Ceci a pour conséquence que les axes 26 et 26' ont tendance à tourner, et donc que le manchon 25 a tendance à tourner. Comme on a vu précédemment, ce mouvement de rotation est empêché par la présence du ressort 30. Ainsi, le flasque 18 est bloqué en position et l'ensemble frein 10 est bien efficace : il empêche la rotation de l'arbre 4 lorsque le moteur électrique 2 n'est pas activé.The operation is as follows: If the motor 2 is not activated, we have seen previously that the ring 11 and the disc 14 compress the pads 19 and 19 'so that a rotation of the shaft 4 would tend to make turn the flange 18. If the flange 18 is rotated, it tends to rotate the toothed wheels 27 and 27 'which are themselves engaged with the teeth of the crown 29. This has the consequence that the axes 26 and 26 'tend to rotate, and therefore that the sleeve 25 tends to rotate. As we have seen previously, this rotational movement is prevented by the presence of the spring 30. Thus, the flange 18 is locked in position and the brake assembly 10 is very effective: it prevents the rotation of the shaft 4 when the engine electric 2 is not activated.

Au contraire, s'il est nécessaire d'utiliser la commande manuelle, la tige 20 est mise en rotation au moyen de la manivelle manipulée par l'utilisateur. Le tambour 22 est alors entraîné en rotation et celui-ci fait tourner le manchon 25 sans en être empêché par le ressort 30 selon ce qu'on a vu précédemment. Selon une cinématique inverse à celle qui a été décrite plus haut, le manchon 25, les axes 26 et 26', les roues dentées 27 et 27' font tourner le flasque 18 dans le sens de rotation de la tige 20. L'arbre 4 étant solidaire du flasque 18 grâce à l'ensemble frein 10, il est entraîné en rotation et par là, le réducteur 5, le disque 6 et le cylindre 7 sont aussi mis en mouvement.On the contrary, if it is necessary to use the manual control, the rod 20 is rotated by means of the crank manipulated by the user. The drum 22 is then driven in rotation and the latter rotates the sleeve 25 without being prevented by the spring 30 according to what has been seen previously. According to a kinematics opposite to that which has been described above, the sleeve 25, the axes 26 and 26 ', the toothed wheels 27 and 27' cause the flange 18 to rotate in the direction of rotation of the rod 20. The shaft 4 being integral with the flange 18 thanks to the brake assembly 10, it is driven in rotation and thereby, the reduction gear 5, the disc 6 and the cylinder 7 are also set in motion.

Il est a noter que le contact glissant entre le flasque 18 et la surface cylindrique interne de la couronne 29 permet à l'utilisateur de manoeuvrer le volet roulant sans devoir vaincre un effort de friction important, ce qui est un progrès sensible par rapport aux dispositifs de l'art antérieur.It should be noted that the sliding contact between the flange 18 and the internal cylindrical surface of the crown 29 allows the user to operate the roller shutter without having to overcome a significant friction force, which is a significant improvement over the devices of the prior art.

Il ressort donc que l'ensemble qui a été décrit ci-dessus constitue une transmission irréversible permettant la transmission d'un mouvement de la tige 20 vers l'arbre 4, mais bloquant la transmission d'un mouvement de l'arbre 4 vers la tige 20.It therefore appears that the assembly which has been described above constitutes an irreversible transmission allowing the transmission of a movement from the rod 20 to the shaft 4, but blocking the transmission of a movement from the shaft 4 to the rod 20.

Le volet roulant a été représenté avec un cylindre 7, mais il peut fonctionner avec un ou plusieurs disques 6 reliés directement au tablier du volet roulant, en particulier si celui-ci est constitué de lattes ou lames. De même, l'invention a été présentée avec un moteur-frein à patins, mais elle s'applique à tout type de frein applicable à son domaine technique, et en particulier à un frein à crabot dont l'élément de blocage est constitué par le crabot lui-même.The roller shutter has been shown with a cylinder 7, but it can operate with one or more discs 6 connected directly to the roller shutter deck, in particular if the latter consists of slats or blades. Likewise, the invention has been presented with a brake-shoe motor, but it applies to any type of brake applicable to its technical field, and in particular to a dog clutch brake, the blocking element of which is constituted by the dog itself.

Claims (10)

Dispositif d'entraînement en rotation d'un élément d'enroulement (7) de tablier de volet roulant comprenant un moteur électrique (2), constitué essentiellement d'un stator et d'un rotor (2a), et un frein (10), destiné à empêcher la rotation dudit élément d'enroulement par rapport à un carter fixe (1) lorsque ledit moteur n'est pas activé, ledit frein comprenant au moins un organe (11, 14, 19), solidaire en rotation dudit rotor et destiné à coopérer avec au moins un élément de blocage (19, 19') porté par un flasque (18), ledit moteur et ledit frein étant montés à l'intérieur dudit carter fixe, caractérisé en ce qu'il comprend une couronne (29) fixe par rapport audit carter et un manchon (25) coopérant avec ledit flasque et ladite couronne pour former un engrenage planétaire, ledit manchon étant apte à être bloqué en rotation par rapport à ladite couronne au moyen d'un ressort frein (30).Device for rotating a winding element (7) of a roller shutter curtain comprising an electric motor (2), essentially consisting of a stator and a rotor (2a), and a brake (10) , intended to prevent the rotation of said winding element relative to a fixed casing (1) when said motor is not activated, said brake comprising at least one member (11, 14, 19), integral in rotation with said rotor and intended to cooperate with at least one locking element (19, 19 ') carried by a flange (18), said motor and said brake being mounted inside said fixed casing, characterized in that it comprises a crown (29 ) fixed relative to said casing and a sleeve (25) cooperating with said flange and said ring to form a planetary gear, said sleeve being able to be locked in rotation relative to said ring by means of a brake spring (30). Dispositif d'entraînement selon la revendication 1, caractérisé en ce qu'il comprend un tambour (22) relié à un élément de commande manuelle (20) et coaxial avec ledit flasque (18), ledit manchon (25) et ladite couronne (29).Drive device according to claim 1, characterized in that it comprises a drum (22) connected to a manual control element (20) and coaxial with said flange (18), said sleeve (25) and said crown (29 ). Dispositif d'entraînement selon la revendication 2, caractérisé en ce que ledit ressort frein (30) est disposé entre, d'une part, ladite couronne (29) et, d'autre part, ledit tambour (22) et ledit manchon (25).Drive device according to claim 2, characterized in that said brake spring (30) is disposed between, on the one hand, said crown (29) and, on the other hand, said drum (22) and said sleeve (25 ). Dispositif d'entraînement selon la revendication 3, caractérisé en ce que l'enveloppe dudit ressort frein (30) est apte à se dilater radialement lors de l'application audit tambour (22) d'un couple transmis par ledit manchon (25).Drive device according to claim 3, characterized in that the casing of said brake spring (30) is capable of expanding radially during the application to said drum (22) of a torque transmitted by said sleeve (25). Dispositif d'entraînement selon la revendication 3, caractérisé en ce que l'enveloppe dudit ressort frein (30) ne se dilate pas radialement lors de la transmission d'un couple dudit tambour (22) audit manchon (25).Drive device according to claim 3, characterized in that the envelope of said brake spring (30) does not expand radially during the transmission of a torque from said drum (22) to said sleeve (25). Dispositif d'entraînement selon la revendication 2, caractérisé en ce que ledit tambour (22) est entouré, sur la plus grande partie de sa circonférence, par une collerette (24) dudit manchon (25).Drive device according to claim 2, characterized in that said drum (22) is surrounded, over most of its circumference, by a flange (24) of said sleeve (25). Dispositif d'entraînement selon la revendication 1, caractérisé en ce que ledit élément d'enroulement est un cylindre (7) d'enroulement.Drive device according to claim 1, characterized in that said winding element is a winding cylinder (7). Dispositif d'entraînement selon la revendication 1, caractérisé en ce que ledit élément d'enroulement est un disque (6) supportant ledit tablier.Drive device according to claim 1, characterized in that said winding element is a disc (6) supporting said apron. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que ledit élément de blocage est un ou deux patins (19, 19') en forme de couronne et ledit organe solidaire du rotor (2a) est une bague (11), un disque (14) ou un plateau (17).Drive device according to claim 1, characterized in that said blocking element is one or two shoes (19, 19 ') in the form of a crown and said member integral with the rotor (2 a ) is a ring (11), a disc (14) or a tray (17). Volet roulant comprenant un dispositif d'entraînement selon l'une des revendications précédentes.Roller shutter comprising a drive device according to one of the preceding claims.
EP19960420336 1995-11-27 1996-11-26 Rotational drive device for the take-up element of a roller shutter Expired - Lifetime EP0775798B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514443 1995-11-27
FR9514443A FR2741661B1 (en) 1995-11-27 1995-11-27 DEVICE FOR ROTATING A ROLLING SHUTTER WINDING ELEMENT

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EP0775798A1 true EP0775798A1 (en) 1997-05-28
EP0775798B1 EP0775798B1 (en) 2002-07-10

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EP19960420336 Expired - Lifetime EP0775798B1 (en) 1995-11-27 1996-11-26 Rotational drive device for the take-up element of a roller shutter

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EP (1) EP0775798B1 (en)
CA (1) CA2191396A1 (en)
DE (1) DE69622243T2 (en)
ES (1) ES2177752T3 (en)
FR (1) FR2741661B1 (en)

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WO2001055548A1 (en) * 2000-01-25 2001-08-02 Securedrive Systems Limited Drive system
EP1180576A1 (en) * 2000-08-17 2002-02-20 Edco Engineering S.A. Control device for actuating a blind
CN1091746C (en) * 1997-06-12 2002-10-02 维托公开股份有限公司 Drive unit for hoist
US7089991B2 (en) 2001-02-28 2006-08-15 Vkr Holding A/S Screening device and drive means for the screening device and method of manual operating the screening device and a mounting for the screening device
EP2034126A1 (en) * 2007-09-10 2009-03-11 Simu Emergency control device and locking, sun protection or projection installation comprising such a device
CN107829669A (en) * 2017-12-01 2018-03-23 福建安麟智能科技股份有限公司 A kind of motor of rolling shutter door opens Door by Hand system

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US6648050B1 (en) 1997-11-04 2003-11-18 Andrew J. Toti Spring drive system and window cover

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FR2270193A1 (en) 1974-05-08 1975-12-05 Covemat Haulage or lifting mechanism with automatic brake - has hand operated secondary shaft releasing brake
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CN1091746C (en) * 1997-06-12 2002-10-02 维托公开股份有限公司 Drive unit for hoist
WO2001055548A1 (en) * 2000-01-25 2001-08-02 Securedrive Systems Limited Drive system
EP1180576A1 (en) * 2000-08-17 2002-02-20 Edco Engineering S.A. Control device for actuating a blind
US7089991B2 (en) 2001-02-28 2006-08-15 Vkr Holding A/S Screening device and drive means for the screening device and method of manual operating the screening device and a mounting for the screening device
US7451803B2 (en) 2001-02-28 2008-11-18 Jorgensen Kent Moelsted Screening device and method of operating the screening device
EP2034126A1 (en) * 2007-09-10 2009-03-11 Simu Emergency control device and locking, sun protection or projection installation comprising such a device
FR2920812A1 (en) * 2007-09-10 2009-03-13 Simu Soc Par Actions Simplifie EMERGENCY CONTROL DEVICE AND CLOSURE, SOLAR PROTECTION OR PROJECTION SYSTEM COMPRISING SUCH A DEVICE
CN107829669A (en) * 2017-12-01 2018-03-23 福建安麟智能科技股份有限公司 A kind of motor of rolling shutter door opens Door by Hand system
CN107829669B (en) * 2017-12-01 2023-12-26 福建安麟智能科技股份有限公司 Manual door opening system of roller shutter door motor

Also Published As

Publication number Publication date
FR2741661B1 (en) 1999-06-18
DE69622243T2 (en) 2003-03-06
DE69622243D1 (en) 2002-08-14
FR2741661A1 (en) 1997-05-30
EP0775798B1 (en) 2002-07-10
CA2191396A1 (en) 1997-05-28
ES2177752T3 (en) 2002-12-16

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