EP1479869B1 - Device for driving a roller shutter or the like - Google Patents
Device for driving a roller shutter or the like Download PDFInfo
- Publication number
- EP1479869B1 EP1479869B1 EP04290954A EP04290954A EP1479869B1 EP 1479869 B1 EP1479869 B1 EP 1479869B1 EP 04290954 A EP04290954 A EP 04290954A EP 04290954 A EP04290954 A EP 04290954A EP 1479869 B1 EP1479869 B1 EP 1479869B1
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- EP
- European Patent Office
- Prior art keywords
- housing
- rotation
- spring
- springs
- stable
- 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.)
- Expired - Lifetime
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- 230000007935 neutral effect Effects 0.000 claims 8
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000000284 resting effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 47
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 241000287107 Passer Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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 present invention relates to the field of shutters, blinds or similar devices driven by a motor.
- EP-A-0 844 363 discloses an automatic shut-off device for shutters or the like.
- a tubular motor has a housing movable in rotation with respect to a support, against a restoring force exerted by springs.
- the casing is kinematically integral with an actuating arm for actuating two switches, mounted on the support.
- the motor rotates a winding tube, on which rolls the roller shutter. When the roller shutter comes into abutment in the wound up position, it exerts a resistant torque on the winding tube and causes the rotation of the motor housing, against the return force.
- the actuating arm then actuates a switch Similarly, when the roller shutter abuts in the lowered position unwound, it exerts a resistant torque on the winding tube and causes the rotation in the other direction of the motor housing, against the force of recall.
- the actuating arm then actuates the other switch. It is proposed that the torque necessary to actuate the switch in the low position unwound is lower than the torque required to actuate the switch in the wound up position.
- the low position unwound or during the unwinding of the flap, it is important to limit the clamping force exerted before stopping the engine, in the event of an obstacle in the path of the flap.
- the weight of the flap contributes to the pinching effort; it is therefore preferable that the actuating torque is as low as possible.
- the motor must overcome the weight of the shutter and any resistance to winding.
- the problem raised in this document is that of the winding direction of the shutter; indeed, the winding direction of the roller shutter may vary depending on the engine mounting.
- the switch or the actuating arm is mounted so as to be moved. This movement makes it possible to modify the distance at rest between the switch and the actuating arm.
- WO-A-01 61139 describes a shutter equipped with automatic shutdown means.
- This document proposes using two compression springs, mounted one inside the other, to urge the motor housing.
- the distance to travel before the compression of a spring is greater than the distance to travel before the compression of the other spring.
- the compression is provided by a mobile also actuating a switch.
- the strokes necessary for the actuation of the switch in a meaning or in the other are invertible. In this way, the motor can be mounted on the left or on the right with a differentiated torque for stopping in high abutment or low abutment.
- shut-off device for a motor driving a roller shutter or the like, which is simple to use and can be used in any mounting position of the motor and driving a shutter or the like.
- a driving device comprising a support; an actuator having a housing rotatably mounted on the support and a movable portion, at least a first spring biasing the housing to a rest position; a switch actuated during the rotation of the housing against the bias of the first spring; at least one second spring and a movable element between a first and a second stable position, the second spring exerts different torques on the casing in one direction of rotation and in the other, depending on the position of the movable element.
- the drive device is described below in its application to the winding of a shutter, for example.
- the training device has a support, which can be mounted on the wall or any other part of a dwelling.
- an actuator having a housing and a movable portion under the action of a motor; the entire actuator is sometimes referred to as the motor.
- a winding tube for a shutter, there is provided a winding tube, and the actuator is typically tubular in order to be mounted inside the winding tube; however, the shape of the actuator is indifferent to the invention and can be used for applications other than roller shutters actuators having a non-tubular shape.
- the casing of the actuator is rotatable relative to the support, over a limited angular range. One end of the winding tube is threaded onto the tubular actuator and the other end of the tube is rotatably mounted. The winding tube is rotated relative to the housing by the movable portion of the actuator.
- This structure is known per se and is for example described in figure 4 of EP-A-0 844 363 . It is not described in more detail in this application.
- One or more switches are actuated during the rotation of the housing to stop the actuator.
- One or more first springs urge the housing to a rest position.
- a movable element between a first and a second stable position, on the housing or on the support. Second jurisdictions exercise different torques on the housing in one direction of rotation and in the other, depending on the position of the movable element. The passage of the movable element from one stable position to the other makes it possible to simply adjust the torque necessary to stop the motor in a direction of rotation or in the other direction of rotation, depending on the direction of winding. shutter or the like on the tube.
- the figure 1 is a schematic view of a part of a winding device according to the invention, in a first position of use and at rest.
- the figure is a sectional view in a plane perpendicular to a common axis of rotation of the actuator relative to the support and the winding tube. Only the parts of the various parts necessary for the understanding of the invention appear in the figure.
- FIG. 2 shows the support.
- figure 1 still shows a part 4 of the actuator housing.
- the casing 4 is rotatably mounted relative to the support, which symbolizes on the figure 1 the arrow; the figure also shows the axis of rotation, by the intersection of the broken lines.
- the housing has an actuating finger 6, adapted to actuate one or the other of two contactors 8 and 10 mounted on the support, when the housing moves in rotation relative to the support in one direction or in the other.
- the housing is biased towards the rest position shown in the figure by first springs; in the example, these first springs comprise two compression coil springs 12 and 14; the first springs may however have any other form insofar as they exert on the casing a restoring force tending to bring it back to a rest position.
- the first springs are arranged on the left and right parts of the casing, which has the advantage of a symmetrical structure.
- first springs mounted opposite each other, replacing the spring 12 by the spring 16 shown in phantom in the figure; it could also provide a single spring which would be constituted in the figure of the springs 14 and 16 and in which would engage the housing.
- the first springs could also be leaf springs as explained in Figure 7 of the document EP-A-0 844 363 .
- the number and shape of the first springs are therefore irrelevant insofar as they recall the housing to the equilibrium position. Because of the presence of the first springs, the housing is constantly biased, which avoids any sudden movement of the housing, especially when starting the motor of the actuator.
- the figure shows the housing 4 in the rest position.
- This position is that in which the housing is located in the absence of stress on the winding tube, for example when the flap is in the intermediate position between a high stop and a low stop and that the actuator is not running.
- the springs are typically sufficient to compensate for the torque exerted by the weight of the flap, so that the housing is in the rest position.
- the actuating finger is at the same distance from one or the other of the contactors. The angular travel required to actuate one or the other of the contactors is therefore the same.
- the housing further has an element 18, which is movable between two stable positions.
- the first stable position is represented in figure 1 and the second stable position is represented in the figure 4 .
- this movable element has the shape of a holding finger with a base, as detailed with reference to the figures 2 and 3 .
- the winding device still has second springs 20 and 22. As explained with reference to the first springs, the number and shape of the second springs is irrelevant. In operation, the torque exerted by the second springs is typically greater than that exerted by the first springs, as explained below.
- first and second springs on the housing are substantially at the same distance from the axis of rotation; the lever arms being similar, a larger torque for the second springs is obtained by providing an upper stiffness. It is understood that one could use first and second springs of similar stiffness and provide different lever arms relative to the axis of rotation for the first and second springs.
- the torque exerted on the casing by the second springs is greater in a first direction of rotation of the casing than in the second direction of rotation.
- the movable element is in contact with the second spring 22 when the housing is in the rest position.
- the second spring 22 exerts a force on the housing which urges it towards the rest position.
- the first direction of rotation is therefore the opposite direction of the needles of a watch.
- the casing can rotate in the clockwise direction along a non-zero angular stroke before encountering the second spring 20; the second direction of rotation is clockwise; it is manifest that the torque exerted by the second spring is greater when the housing rotates counterclockwise than when it rotates in the direction of clockwise.
- the difference in torque is obtained simply by a difference between the angular stroke of the housing, from the rest position, to reach the second springs 20 and 22. More precisely, in the rest position, the movable member 18 is in contact with one of the springs 22, and is not in contact with the other spring 20. The holding finger engages the other spring 20 only substantially when the actuating finger 6 comes into contact with the contactor 10.
- the operation of the winding device of the figure 1 is the next.
- the first spring or springs are chosen so as to exert on the crankcase a sufficient torque to compensate for the torque exerted on the winding tube when the shutter is unwound. In this way, even when the shutter is completely unwound, the housing remains in the vicinity of its rest position and the contactors 8, 10 are not actuated. It is further provided that the first spring or springs exert an identical torque whatever the direction of rotation of the housing, from its rest position; as explained below, this allows an undifferentiated mounting of the device, with one or the other of the two directions of winding.
- the stable position of the figure 1 corresponds to a winding direction of the shutter on the winding tube in the direction of clockwise.
- the rotation of the winding tube in the opposite direction of clockwise causes the unwinding of the flap.
- the actuator housing moves in a clockwise direction .
- the actuating finger 16 then actuates the contactor 10 before the holding finger comes into contact with the second spring 20.
- the torque required for the actuation of the contactor 10 is only fixed by the first springs, or if appropriate by a short compression stroke of the second spring 20.
- the winding device When the winding device is actuated to raise the flap, the winding tube is driven in the clockwise direction. Upon reaching the high stop position, the winding tube stops and the actuator continues to operate, the actuator housing moves counterclockwise. The holding finger 18 is in contact with the second spring 22, so that the torque necessary for the actuation of the contactor 8 is a function of the first springs 12 and 14, but also of the second spring 22.
- the second springs hardly act during the rotation of the housing 4 in the opposite direction of clockwise; in fact, the actuating finger 6 actuates the contactor 10 before the holding finger comes into contact with the second spring 20.
- the angular travel ⁇ of the housing to actuate the contactor 10 is less than the angular travel ⁇ of the housing to enter contact with the second spring 20.
- the torque exerted by the second springs to oppose the rotation of the housing in the direction of clockwise is zero.
- these strokes are substantially identical, or that the stroke ⁇ is less than the stroke ⁇ , if it is desired to increase the torque necessary for the actuation of the contactor 10.
- the second spring 22 is substantially in contact with the retaining finger, 18 in the rest position of the housing.
- the spring 22 urges the housing towards a rest position, offset in a clockwise direction relative to the position shown in FIG. figure 1 . This amounts to decreasing the torque necessary to actuate the switch 10 and further increase the torque required to actuate the switch 8.
- the invention makes it possible to adjust the winding device without modifications of the device in the vicinity of the contactors. This limits the risk of damage to the contactors and improves the accuracy with which the contactor (s) and the actuating finger are constructed.
- a device that is both more sensitive and more resistant is obtained.
- the device is more sensitive, in that it is no longer necessary to provide a clearance to allow the movement of the actuating finger or contactors.
- the device is more resistant, in that a fixed actuating finger is less fragile of a movable actuating finger.
- the figure 2 is a view of the device of the figure 1 , in a delivery position, the figure 3 is a larger-scale view of the figure 2 .
- This delivery position corresponds to an unstable equilibrium position of the element 18.
- the element 18 comes in one or other of the two positions of stable equilibrium.
- the retaining finger 18 is mounted on a base 30, which is substantially perpendicular to the general direction of the retaining finger.
- the base is provided with two openings 32 and 34.
- the housing has a first wall 36 and a second wall 38 surrounding the base 30.
- the first wall has, on its face facing the base 38, three projections 40; 42 and 44, aligned.
- the second wall 38 has an elongate opening 46 in which the retaining finger 18 slides.
- the projections 40, 42 and 44 are aligned and parallel to the longitudinal direction of the opening 46.
- a spring 48 urges the base 30 towards the projections 40 , 42 and 44.
- the projections and openings are arranged such that the projections 40 and 42 can respectively penetrate the openings 32 and 34, in the second position of stable equilibrium of the figure 4 and that the projections 42 and 44 can respectively enter the openings 32 and 34, in the first position of stable equilibrium of the figure 4 .
- the holding finger 18 In the delivery position of the figures 2 and 3 , the holding finger 18 is substantially in the middle position in the opening 46.
- the base rests on the projections 40, 42 and 44. If the holding finger is moved to the right of the figure 2 or 3 , the base moves until the fingers 42 and 44 come into the openings 32 and 34. Under the action of the spring 48, the base plate against the first wall 36. The position is the first equilibrium position stable.
- the base moves until the fingers 40 and 42 come into the openings 32 and 34.
- the base plate against the first wall 36.
- the position is the second position of equilibrium stable. It remains possible to move the finger from a position of stable equilibrium towards the other, exerting a traction force against the bias of the spring 48 and then moving the finger in the opening 46.
- the delivery of the winding device in the unstable equilibrium position allows automatic adjustment of the position of the movable element 18, during the first use.
- the figure 4 is a schematic view of the winding device, in the second position of use. This position corresponds to the second position of stable equilibrium of the holding element.
- the operation of the winding device is similar to that described with reference to the figure 1 - by reversing the directions of rotation and winding.
- the figure 5 is a schematic view of another embodiment of a driving device.
- the example of figure 5 differs from that of Figures 1 to 4 by the position of the second springs 20 and 22. These are mounted floating on a shaft 50.
- the holding finger 18 has an opening 52 of elongate shape, in which the shaft 50 passes.
- the opening is elongated in the plane of the figure, to allow rotation of the housing; in the plane perpendicular to the figure, the opening has a dimension substantially equal to that of the shaft, so that the holding finger 18 can urge the springs 20 and 22 in case of rotation of the housing 4.
- This solution simplifies the mounting the springs and avoids providing cradles or a similar solution for fixing the springs 20, 22 on the support.
- the present invention is not limited to the embodiments described by way of example; thus, the shape of the different parts composing the device winding can vary from the figures.
- the support is shown schematically in the figures; it serves to hold the contactors and also serves as a support for the springs and may have another form when it performs these functions.
- the springs are similar to those of EP-A-0 844 363 and are arranged directly between the housing and the support. It could also have intermediate parts between the springs and the housing, as proposed in WO-A-01 61139 .
- actuating finger 6 at a position on the housing different from the position of the first and second springs.
- the springs can be prestressed.
- the movable holding finger is disposed on the housing. It could also be provided on the support, with the second springs on the housing.
- the drive device of the invention applies to other moving parts, even non-wound, such as a garage door movable in translation and having a rack on which meshes a toothed wheel constituting the movable part of the actuator.
- a door formed of articulated blades sliding in slides and driven into the slides by the actuator as in DE-A-35 15404 .
- the drive device operates as explained with reference to the figures, although no winding tube is provided. It is understood that the shape of the actuator is not necessarily tubular.
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Abstract
Description
La présente invention concerne le domaine des volets roulants, stores ou dispositifs analogues entraînés par un moteur.The present invention relates to the field of shutters, blinds or similar devices driven by a motor.
Le problème soulevé dans ce document est celui du sens d'enroulement du volet roulant; en effet, le sens d'enroulement du volet roulant peut varier en fonction du montage du moteur. Pour facilement adapter le dispositif au sens d'enroulement du volet, il est proposé que l'interrupteur ou le bras d'actionnement soit monté de manière à être déplacé. Ce déplacement permet de modifier la distance au repos entre l'interrupteur et le bras d'actionnement.The problem raised in this document is that of the winding direction of the shutter; indeed, the winding direction of the roller shutter may vary depending on the engine mounting. To easily adapt the device to the winding direction of the flap, it is proposed that the switch or the actuating arm is mounted so as to be moved. This movement makes it possible to modify the distance at rest between the switch and the actuating arm.
Il existe toujours un besoin d'un dispositif d'arrêt pour un moteur entraînant un volet roulant ou analogue, qui soit simple d'utilisation et soit utilisable dans toutes les positions de montage du moteur et d'entraînement d'un volet ou analogue.There is still a need for a shut-off device for a motor driving a roller shutter or the like, which is simple to use and can be used in any mounting position of the motor and driving a shutter or the like.
L'invention propose en conséquence, dans un mode de réalisation, un dispositif d'entraînement, comprenant un support; un actionneur présentant un carter monté à rotation sur le support et une partie mobile, au moins un premier ressort sollicitant le carter vers une position de repos; un contacteur actionné lors de la rotation du carter à l'encontre de la sollicitation du premier ressort; au moins un deuxième ressort et un élément mobile entre une première et une deuxième positions stables, le deuxième ressort exerce des couples différents sur le carter dans un sens de rotation et dans l'autre, en fonction de la position de l'élément mobile.The invention accordingly proposes, in one embodiment, a driving device, comprising a support; an actuator having a housing rotatably mounted on the support and a movable portion, at least a first spring biasing the housing to a rest position; a switch actuated during the rotation of the housing against the bias of the first spring; at least one second spring and a movable element between a first and a second stable position, the second spring exerts different torques on the casing in one direction of rotation and in the other, depending on the position of the movable element.
Le dispositif d'entraînement peut aussi présenter l'une ou plusieurs des caractéristiques suivantes :
- dans la première position stable, le couple exercé sur le carter par le deuxième ressort est supérieur dans un premier sens de rotation du carter que dans un deuxième sens de rotation;
- dans la deuxième position stable, le couple exercé sur le carter par le deuxième ressort est supérieur dans le deuxième sens de rotation du carter que dans le premier sens de rotation;
- l'élément mobile est monté sur le carter;
- l'élément mobile présente une position d'équilibre instable dans la position de repos du carter;
- l'élément mobile est adapté à passer de la position d'équilibre instable à une position d'équilibre stable lorsque le carter est entraîné en rotation par rapport au support;
- dans la première position stable, la course angulaire du carter dans le premier sens de rotation entre la position de repos et la position de contact avec le deuxième ressort est inférieure à la course angulaire du carter dans le deuxième sens de rotation entre la position de repos et la position de contact avec le deuxième ressort;
- dans la première position stable, la course angulaire du carter dans le premier sens de rotation entre la position de repos et la position de contact avec le deuxième ressort est nulle;
- dans la deuxième position stable, la course angulaire du carter dans le premier sens de rotation entre la position de repos et la position de contact avec le deuxième ressort est supérieure à la course angulaire du carter dans le deuxième sens de rotation entre la position de repos et la position de contact avec le deuxième ressort;
- dans la deuxième position stable, la course angulaire du carter dans le deuxième sens de rotation entre la position de repos et la position de contact avec le deuxième ressort est nulle;
- un tube d'enroulement est entraîné en rotation par la partie mobile de l'actionneur.
- in the first stable position, the torque exerted on the casing by the second spring is greater in a first direction of rotation of the casing than in a second direction of rotation;
- in the second stable position, the torque exerted on the casing by the second spring is greater in the second direction of rotation of the casing than in the first direction of rotation;
- the movable element is mounted on the housing;
- the movable element has an unstable equilibrium position in the housing rest position;
- the movable element is adapted to move from the unstable equilibrium position to a stable equilibrium position when the housing is rotated relative to the support;
- in the first stable position, the angular travel of the housing in the first direction of rotation between the rest position and the position of contact with the second spring is less than the angular stroke of the housing in the second direction of rotation between the rest position and the position of contact with the second spring;
- in the first stable position, the angular travel of the housing in the first direction of rotation between the rest position and the position of contact with the second spring is zero;
- in the second stable position, the angular travel of the casing in the first direction of rotation between the rest position and the position of contact with the second spring is greater than the angular stroke of the casing in the second direction of rotation between the rest position and the position of contact with the second spring;
- in the second stable position, the angular travel of the housing in the second direction of rotation between the rest position and the position of contact with the second spring is zero;
- a winding tube is rotated by the movable part of the actuator.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit des modes de réalisation de l'invention, donnés à titre d'exemple uniquement et en références aux dessins qui montrent :
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figure 1 , une vue schématique d'une partie d'un dispositif d'entraînement selon l'invention, dans une première position d'utilisation; -
figure 2 , une vue schématique du dispositif de lafigure 1 , dans une position de livraison; -
figure 3 , une vue partielle à plus grande échelle de lafigure 2 -
figure 4 , une vue schématique du dispositif de lafigure 1 , dans une deuxième position d'utilisation; -
figure 5 une vue schématique d'un autre mode de réalisation d'un dispositif d'entraînement selon l'invention.
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figure 1 , a schematic view of a portion of a driving device according to the invention, in a first use position; -
figure 2 , a schematic view of the device of thefigure 1 in a delivery position; -
figure 3 , a partial view on a larger scale of thefigure 2 -
figure 4 , a schematic view of the device of thefigure 1 in a second position of use; -
figure 5 a schematic view of another embodiment of a drive device according to the invention.
Le dispositif d'entraînement est décrit dans la suite dans son application à l'enroulement d'un volet roulant, à titre d'exemple.The drive device is described below in its application to the winding of a shutter, for example.
Le dispositif d'entraînement présente un support, qui peut être monté sur le mur ou toute autre partie d'une habitation. Sur le support est monté un actionneur, présentant un carter et une partie mobile sous l'action d'un moteur; l'ensemble de l'actionneur est parfois désigné par le terme moteur. Pour un volet roulant, on prévoit un tube d'enroulement, et l'actionneur est typiquement de forme tubulaire pour pouvoir être monté à l'intérieur du tube d'enroulement; toutefois, la forme de l'actionneur est indifférente à l'invention et on peut utiliser pour des applications autres que les volets roulants enroulés des actionneurs présentant une forme non-tubulaire. Le carter de l'actionneur est mobile en rotation par rapport au support, sur une plage angulaire limitée. Une extrémité du tube d'enroulement est enfilée sur l'actionneur tubulaire et l'autre extrémité du tube est montée libre en rotation. Le tube d'enroulement est entraîné en rotation par rapport au carter, par la partie mobile de l'actionneur. Cette structure est connue en soi et est par exemple décrite à la
Un ou plusieurs contacteurs sont actionnés lors de la rotation du carter pour arrêter l'actionneur. Un ou plusieurs premiers ressorts sollicitent le carter vers une position de repos. On prévoit un élément mobile entre une première et une deuxième positions stables, sur le carter ou sur le support. Des deuxièmes ressorts exercent des couples différents sur le carter dans un sens de rotation et dans l'autre, en fonction de la position de l'élément mobile. Le passage de l'élément mobile d'une position stable à l'autre permet de régler simplement le couple nécessaire à l'arrêt du moteur dans un sens de rotation ou dans l'autre sens de rotation, en fonction du sens d'enroulement du volet ou analogue sur le tube.One or more switches are actuated during the rotation of the housing to stop the actuator. One or more first springs urge the housing to a rest position. There is provided a movable element between a first and a second stable position, on the housing or on the support. Second jurisdictions exercise different torques on the housing in one direction of rotation and in the other, depending on the position of the movable element. The passage of the movable element from one stable position to the other makes it possible to simply adjust the torque necessary to stop the motor in a direction of rotation or in the other direction of rotation, depending on the direction of winding. shutter or the like on the tube.
On utilise dans la suite les termes droite, gauche, haut, bas, sens des aiguilles d'une montre ou sens inverse en référence aux dessins.The terms "right", "left", "up", "down", "clockwise" or "opposite" are used with reference to the drawings.
La
La figure montre le carter 4 dans la position de repos. Cette position est celle dans laquelle se trouve le carter en l'absence de sollicitation sur le tube d'enroulement, par exemple lorsque le volet est en position intermédiaire entre une butée haute et une butée basse et que l'actionneur n'est pas en marche. Dans cette position, les ressorts suffisent typiquement à compenser le couple exercé par le poids du volet, de sorte que le carter est en position de repos. Dans cette position, le doigt d'actionnement est à même distance de l'un ou l'autre des contacteurs. La course angulaire nécessaire pour actionner l'un ou l'autre des contacteurs est donc la même.The figure shows the
Le carter présente en outre un élément 18, qui est mobile entre deux positions stables. La première position stable est représentée à la
Selon l'invention, dans la première position stable de l'élément mobile 18, le couple exercé sur le carter par les deuxièmes ressorts est supérieur dans un premier sens de rotation du carter que dans le deuxième sens de rotation. Dans la position stable de la
A l'inverse, dans la deuxième position stable de la
Dans l'exemple de la figure, la différence de couple est obtenue simplement par une différence entre la course angulaire du carter, depuis la position de repos, pour atteindre les deuxièmes ressorts 20 et 22. Plus précisément, dans la position de repos, l'élément mobile 18 est en contact avec l'un des ressorts 22, et n'est pas en contact avec l'autre ressort 20. Le doigt de maintien n'entre en contact avec l'autre ressort 20 que sensiblement au moment où le doigt d'actionnement 6 entre en contact avec le contacteur 10.In the example of the figure, the difference in torque is obtained simply by a difference between the angular stroke of the housing, from the rest position, to reach the
Le fonctionnement du dispositif d'enroulement de la
La position stable de la
Lorsque le dispositif d'enroulement est actionné pour remonter le volet, le tube d'enroulement est entraîné dans le sens des aiguilles d'une montre. En arrivant à la position de butée haute, le tube d'enroulement s'immobilise et l'actionneur continuant à fonctionner, le carter de l'actionneur se déplace dans le sens inverse des aiguilles d'une montre. Le doigt de maintien 18 est en contact avec le deuxième ressort 22, de sorte que le couple nécessaire à l'actionnement du contacteur 8 est fonction des premiers ressorts 12 et 14, mais aussi du deuxième ressort 22.When the winding device is actuated to raise the flap, the winding tube is driven in the clockwise direction. Upon reaching the high stop position, the winding tube stops and the actuator continues to operate, the actuator housing moves counterclockwise. The holding
On comprend donc de l'explication du fonctionnement du dispositif de la
Dans l'exemple de la figure, les deuxièmes ressorts n'agissent quasiment pas lors de la rotation du carter 4 dans le sens inverse des aiguilles d'un montre; de fait, le doigt d'actionnement 6 actionne le contacteur 10 avant que le doigt de maintien n'entre en contact avec le deuxième ressort 20. En d'autres termes, la course angulaire β du carter pour actionner le contacteur 10 est inférieure à la course angulaire α du carter pour entrer contact avec le deuxième ressort 20. Le couple exercé par les deuxièmes ressorts pour s'opposer à la rotation du carter dans le sens des aiguilles d'une montre est nul. On pourrait toutefois prévoir que ces courses sont sensiblement identiques, voire que la course α est inférieure à la course β, si l'on souhaite augmenter le couple nécessaire à l'actionnement du contacteur 10.In the example of the figure, the second springs hardly act during the rotation of the
Dans l'exemple de la figure, le deuxième ressort 22 est sensiblement au contact du doigt de maintien, 18 dans la position de repos du carter. On pourrait aussi prévoir une course entre le doigt de maintien et l'extrémité du ressort 22 lorsque le carter tourne dans le sens des aiguilles d'une montre; ceci revient à diminuer le couple nécessaire à l'actionnement du contacteur 8 lors de la remontée du volet roulant. Inversement, on pourrait aussi prévoir que le ressort 22 sollicite le carter vers une position de repos, décalée dans le sens des aiguilles d'une montre par rapport à la position représentée à la
Dans tous les cas, comme expliqué plus haut, dans la position stable du doigt de maintien 18 représentée à la
Par rapport aux solutions proposées dans
La
Structurellement, le doigt de maintien 18 est monté sur un socle 30, qui est sensiblement perpendiculaire à la direction générale du doigt de maintien. Le socle est muni de deux ouvertures 32 et 34. Le carter présente une première paroi 36 et une deuxième paroi 38 entourant le socle 30. La première paroi présente, sur sa face dirigée vers le socle 38, trois saillies 40; 42 et 44, alignées. La deuxième paroi 38 présente une ouverture allongée 46 dans laquelle coulisse le doigt de maintien 18. Les saillies 40, 42 et 44 sont alignées et parallèles à la direction longitudinale de l'ouverture 46. Un ressort 48 sollicite le socle 30 vers les saillies 40, 42 et 44. Les saillies et les ouvertures sont disposées de telle sorte que les saillies 40 et 42 puissent respectivement pénétrer dans les ouvertures 32 et 34, dans la deuxième position d'équilibre stable de la
La livraison du dispositif d'enroulement dans la position d'équilibre instable permet un réglage automatique de la position de l'élément mobile 18, lors de la première utilisation.The delivery of the winding device in the unstable equilibrium position allows automatic adjustment of the position of the
Plus précisément, on suppose comme à la
A l'inverse, si l'on suppose que le volet est enroulé sur le tube d'enroulement dans le sens inverse des aiguilles d'une montre, la rotation du tube d'enroulement dans le sens des aiguilles d'une montre provoque le déroulement du volet. En présence d'un obstacle au déroulement ou en arrivée en position de butée basse, le tube d'enroulement s'immobilise et l'actionneur continuant à fonctionner, le carter de l'actionneur se déplace dans le sens inverse des aiguilles d'une montre. On suppose que l'élément 18 est dans là position d'équilibre instable et on provoque une descente en butée basse du volet. Le volet vient en butée basse et le tube d'enroulement s'immobilise. Le carter tourne alors dans le sens inverse des aiguilles d'une montre. Le doigt de maintien vient en contact avec le ressort 20. Il est poussé vers la gauche et vient dans la deuxième position stable de la
De la sorte, quel que soit le sens d'enroulement du volet roulant, on peut automatiquement régler la position de l'élément mobile 18, lors de l'installation du dispositif d'enroulement, en provoquant un premier arrêt en butée basse. En cas d'erreur, il est encore possible, manuellement, de déplacer l'élément mobile 18, comme expliqué plus haut. La livraison dans cette position d'équilibre instable n'est qu'une faculté et on pourrait ne prévoir qu'un réglage manuel de l'élément mobile dans une position ou dans l'autre.In this way, irrespective of the direction of winding of the shutter, it is possible to automatically adjust the position of the
La
La
Bien entendu, la présente invention n'est pas limitée aux modes de réalisations décrits à titre d'exemple; ainsi, la forme des différentes pièces composant le dispositif d'enroulement peut varier par rapport aux figures. Le support est représenté schématiquement sur les figures; il sert au maintien des contacteurs et sert aussi d'appui pour les ressorts et peut présenter une autre forme dès lors qu'il remplit ces fonctions.Of course, the present invention is not limited to the embodiments described by way of example; thus, the shape of the different parts composing the device winding can vary from the figures. The support is shown schematically in the figures; it serves to hold the contactors and also serves as a support for the springs and may have another form when it performs these functions.
On pourrait échanger la position du doigt d'actionnement 6 et des contacteurs 8 et 10 en prévoyant les contacteurs sur le carter du moteur et le doigt d'actionnement sur le support, sans que le fonctionnement du dispositif d'enroulement n'en soit modifié; il est avantageux comme sur les figures de disposer les contacteurs sur le support, dans la mesure où un câblage vers des contacteurs fixes est plus simple et plus sûr et où l'encombrement est souvent moins contraint sur le support que sur le carter. De façon similaire à ce qu'enseigne
Dans l'exemple des figures, les ressorts sont similaires à ceux de
En outre, on pourrait disposer le doigt d'actionnement 6 à une position sur le carter différente de la position des premiers et deuxièmes ressorts. Les ressorts peuvent être précontraints.In addition, one could have the
Sur les figures, le doigt de maintien mobile est disposé sur le carter. On pourrait aussi le prévoir sur le support, avec les deuxièmes ressorts sur le carter.In the figures, the movable holding finger is disposed on the housing. It could also be provided on the support, with the second springs on the housing.
Dans les exemples ci-dessus est mentionné le cas d'un volet roulant avec un tube d'enroulement. Le dispositif d'entraînement de l'invention s'applique à d'autres pièces mobiles, même non enroulées, comme par exemple une porte de garage mobile en translation et présentant une crémaillère sur laquelle engrène une roue dentée constituant la partie mobile de l'actionneur. On pourrait aussi utiliser le dispositif d'entraînement pour une porte formé de lames articulées coulissant dans des glissières et entraînées dans les glissières par l'actionneur, comme dans
Claims (10)
- A drive device comprising:a support (2);an actuator having a housing (4) rotatively mounted on the support, and a movable part;at least a first spring (12, 14, 16) urging the housing towards a neutral position;a contactor (8, 10) operated upon rotation of the housing against the urging action of the first spring;characterised in that the drive device further comprises- at least a second spring (20, 22) and a member (18) movable between a first and a second stable position,the second spring exercising different turning moments on the housing in one direction of rotation and in the other, depending on the position of the movable element.
- The device of claim 1, characterised in that- in the first stable position, the turning moment exercised on the housing by the second spring is greater in a first direction of rotation of the housing than in a second direction of rotation, and in that- in the second stable position the turning moment exercised on the housing by the second spring is greater in the second direction of rotation of the housing than in the first direction of rotation.
- The device of claim 1 or 2, characterised in that the movable member (18) is mounted on the housing (4).
- The device of claim 1, 2 or 3, characterised in that the movable member has a first unstable equilibrium position in the neutral position of the housing.
- The device of claim 4, characterised in that the movable member is adapted to change from the unstable equilibrium position to a stable equilibrium position when the housing is driven in rotation with respect to the support.
- The device of one of claims 1-5, characterised in that, in the first stable position, the angular travel of the housing in the first direction of rotation between the neutral position and the contact position with the second spring is less than the angular travel of the housing in the second direction of rotation between the neutral position and the contact position with the second spring.
- The device of claim 6, characterised in that, in the first stable position, the angular travel of the housing in the first direction of rotation between the neutral position and the contact position with the second spring is zero.
- The device of one of claims 1-7, characterised in that, in the second stable position, the angular travel of the housing in the first direction of rotation between the neutral position and the contact position with the second spring is greater than the angular travel of the housing in the second direction of rotation between the neutral position and the contact position with the second spring.
- The device of claim 8, characterised in that, in the second stable position, the angular travel of the housing in the second direction of rotation between the neutral position and the contact position with the second spring is zero.
- The device of one of claims 1-9, characterised by a winder tube driven in rotation by the movable part of the actuator.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0306251A FR2855205B1 (en) | 2003-05-23 | 2003-05-23 | DRIVE DEVICE FOR ROLLER SHUTTER OR THE LIKE |
FR0306251 | 2003-05-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1479869A1 EP1479869A1 (en) | 2004-11-24 |
EP1479869B1 true EP1479869B1 (en) | 2008-05-14 |
Family
ID=33042026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04290954A Expired - Lifetime EP1479869B1 (en) | 2003-05-23 | 2004-04-09 | Device for driving a roller shutter or the like |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1479869B1 (en) |
AT (1) | ATE395496T1 (en) |
DE (1) | DE602004013673D1 (en) |
ES (1) | ES2234459T1 (en) |
FR (1) | FR2855205B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3515404A1 (en) * | 1985-04-29 | 1986-10-30 | Ernst Selve GmbH & Co KG, 5880 Lüdenscheid | Opening closure, which can be made as a blind, in particular roller gate, roller shutter, roller curtain or the like |
FR2755998B1 (en) * | 1996-11-21 | 1999-01-22 | Somfy | DEVICE FOR AUTOMATICALLY STOPPING A MOTOR DRIVING A TUBE FOR ROLLING A SHUTTER |
FR2755999B1 (en) * | 1996-11-21 | 1999-11-12 | Somfy | AUTOMATIC STOPPING DEVICE FOR ROLLING SHUTTERS OR THE LIKE |
FR2805307B1 (en) * | 2000-02-21 | 2002-05-24 | Somfy | MOTORIZED SHUTTER EQUIPPED WITH AUTOMATIC STOPPING MEANS |
-
2003
- 2003-05-23 FR FR0306251A patent/FR2855205B1/en not_active Expired - Fee Related
-
2004
- 2004-04-09 EP EP04290954A patent/EP1479869B1/en not_active Expired - Lifetime
- 2004-04-09 DE DE602004013673T patent/DE602004013673D1/en not_active Expired - Fee Related
- 2004-04-09 ES ES04290954T patent/ES2234459T1/en active Pending
- 2004-04-09 AT AT04290954T patent/ATE395496T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2855205B1 (en) | 2005-07-08 |
ATE395496T1 (en) | 2008-05-15 |
FR2855205A1 (en) | 2004-11-26 |
EP1479869A1 (en) | 2004-11-24 |
DE602004013673D1 (en) | 2008-06-26 |
ES2234459T1 (en) | 2005-07-01 |
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