EP2115261A1 - Device with a shutter which may be wound about a drum - Google Patents

Device with a shutter which may be wound about a drum

Info

Publication number
EP2115261A1
EP2115261A1 EP08708653A EP08708653A EP2115261A1 EP 2115261 A1 EP2115261 A1 EP 2115261A1 EP 08708653 A EP08708653 A EP 08708653A EP 08708653 A EP08708653 A EP 08708653A EP 2115261 A1 EP2115261 A1 EP 2115261A1
Authority
EP
European Patent Office
Prior art keywords
drum
axis
flap
suspension
roller
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
EP08708653A
Other languages
German (de)
French (fr)
Other versions
EP2115261B1 (en
Inventor
Benoît Coenraets
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Entrematic Belgium NV
Original Assignee
Dynaco International SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynaco International SA filed Critical Dynaco International SA
Priority to PL08708653T priority Critical patent/PL2115261T3/en
Priority to EP08708653A priority patent/EP2115261B1/en
Publication of EP2115261A1 publication Critical patent/EP2115261A1/en
Application granted granted Critical
Publication of EP2115261B1 publication Critical patent/EP2115261B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • E06B9/174—Bearings specially adapted therefor
    • 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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • E06B9/174—Bearings specially adapted therefor
    • E06B2009/1743—Bearings specially adapted therefor allowing radial roller movement

Definitions

  • the invention relates to a flexible shutter device for closing a bay or any type of opening cooperating with drive means for moving the flexible flap between an open position and a closed position .
  • the invention relates more particularly to a shutter device comprising a drum rotatable about its horizontal axis and around which the shutter is wound in its open position by forming a roller consisting of turns formed by successive layers of the shutter. hanging from each other and from which the flap can be unwound and pushed towards its closed position; the device also comprises means for supporting the drum relative to the walls of the rack, pressure means exerting on the roller a thrust force substantially radial with respect to the drum.
  • the device can be used for closing any type of openings, for example in buildings or vehicles.
  • Devices for closing a bay having a drum around which a flap is wound in its open position are known.
  • the shutter is wrapped around the drum in turns or layers forming a roll around the drum.
  • the flap is unwound by rotating the drum about its axis, so that the flap goes down by closing the bay while the side edges of the latter are preferably guided in two guideways or rails extending parallel to each other. one to another.
  • a thrust force is exerted on the lateral edges of the flap in their longitudinal direction.
  • the patent application WO 03/106801 describes a roller shutter device around a drum which aims to remedy these disadvantages.
  • hooking means arranged along the lateral edges of the flap make it possible to fix the successive layers or turns of the roller to each other in order to prevent the successive layers of the flap from slipping relative to one another.
  • the device comprises a rotating cylinder exerting on the roller a thrust force at the point where the not yet wound flap comes into contact with the roller and means for returning the drum to keep the roller in contact with the rotating cylinder and allow the successive turns to be fixed one to another.
  • the drum and the rotating cylinder are movably mounted relative to each other.
  • the cylinder is fixedly mounted while the drum shaft is mounted in a housing which has horizontal rails in which the drum can move horizontally.
  • the drum cooperates with two springs, one end of which is fixed to the drum. The springs keep the roller in contact with the rotating cylinder.
  • This device has several disadvantages.
  • the number of parts used to ensure contact between the roll and the rotating cylinder is important.
  • the pressure exerted between the rotating cylinder and the side edges of the flap causes heating causing accelerated wear of these edges and contact elements.
  • the length of the slides of the housing depends on the length of the flap.
  • the housing must be machined to size according to the dimensions of the shutter, which increases the cost and time of manufacture and assembly.
  • the attachment of the springs to the drum is complicated because they must not interfere with the rotation of the drum.
  • the drum is pushed out of contact with the rotating cylinder and the turns are detached from the roller .
  • An object of the invention is to overcome these disadvantages by having a flexible shutter device which opens and closes in a controlled manner by ensuring that a very regular roller is obtained during the opening of the flexible flap and that the latter unrolls without the turns of the roll unstuck from the roll. More particularly, the invention aims to provide a simple device, low cost, easy to manufacture and assemble, using little and avoids the locking of the mechanism during the unfolding of the flexible flap.
  • the device according to the invention is characterized in that the drum support means comprise suspension means of the drum, the suspension means forming a suspension axis parallel to the axis of rotation of the drum and around which the axis of rotation of the drum can oscillate; the distance from the axis of rotation of the drum to the reference plane formed by the flexible flap unwound in its closed position is, whatever the position of the flap, which is less than the distance from the suspension axis to this same reference plane.
  • This method of fixing the drum allows it to rotate freely about its axis of rotation.
  • the axis of rotation can oscillate around a suspension axis, so as to allow the drum to move according to the variation of the radius of the roll.
  • the angle of oscillation of the axis of rotation of the drum about the axis of suspension relative to the vertical simply increases with the diameter of the roll.
  • this method of attachment ensures that the roll formed by the turns wound around the drum is kept in contact against contact elements when the flexible shutter is closed.
  • the roller rotated by the motor exerts a thrust force on the lateral edges of the flexible flap, parallel to these lateral edges and in the direction of advance of the flexible flap along the Bay.
  • the lateral edges of the flexible flap exert on the roller a resultant force parallel and opposite to the thrust force due in particular to the friction that is exerted between the slideways and the lateral edges of the flexible flap.
  • This resulting force can cause the spacing of the drum and the stall of the turns relative to each other; the roll is no longer in contact with the contact elements. Loose turns are then created around the roller which causes the device to lock.
  • the resulting reaction force generates, due to the offset between the axis of suspension and the axis of rotation of the drum, a moment that brings the roll against the contact elements.
  • the technical effect due to the offset between the axis of rotation of the drum and the axis of suspension relative to the reference plane applies to shutters closing both vertical bays and horizontal bays (and all bays in the intermediate position).
  • the flexible shutter closes a horizontal bay, and provided that the drum is disposed above the bay, the gravitational force also applies, when the distance from the axis of rotation of the drum to the vertical reference plane is consistently less than the distance from the suspension axis to the vertical reference plane; in this case, the effect of the weight of the drum and the roller is added to the effect of the resulting force of thrust.
  • the holding device of the drum and the roller is thus particularly simple, effective, not requiring multiple parts to be machined specifically according to the dimensions of the flexible flap. At the same time, it makes it possible to avoid the risk of stalling of the turns when closing the flexible shutter; the roller is easily held in contact with the contact elements and keeps turns constantly adjacent to each other.
  • the suspension axis consists of either a single piece or is formed of at least two axes arranged horizontally at each end of the drum. The lines passing through these two axes are merged.
  • the suspension means comprise at least one substantially planar suspension plate, disposed substantially perpendicular to the axis of rotation of the drum at one end thereof, the plate comprising a first opening in which axis of rotation of the drum is housed and a second opening in which the axis of suspension is housed.
  • the lateral edges of the flexible flap are substantially incompressible in the longitudinal direction of the flap, namely in the direction of displacement of the lateral edges in the slides.
  • the side edges may include wires or wires.
  • the flexible shutter device of the invention is particularly advantageous for flaps of large dimensions and / or which are subjected to bad weather and high winds. It prevents the blockage of the mechanism during the course of the flap.
  • the device must be able to operate for shutters with up to 60 m 2 of surface, which can be subjected to winds up to 160km / h.
  • the distance from the axis of rotation of the drum to the reference plane formed by the flexible flap unwound in its closed position is, whatever the position of the flap, less than the distance from the axis of suspension to the same reference plane.
  • the wind blowing on the flexible flap makes it difficult to unfold.
  • the larger the shutter dimensions the greater the effect of the wind on it.
  • the friction forces of the lateral edges on the slideways increase with the effect of the wind.
  • the greater the frictional forces on the lateral edges of the flexible flap the greater the resulting force that the side edges of the flap exert on the roller is important and the risk of loosening the turns relative to each other is important.
  • the invention also aims to propose a device in which the flexible flap, during winding around the drum, forms superimposed layers of very regular and uniform turns.
  • the device according to the invention is preferably characterized in that it comprises return means exerting a return torque on the means of suspension relative to the suspension axis, so as to ensure constant contact between the roller and the contact elements.
  • the return means thus participate in maintaining the roller against the contact elements, during the winding of the flap around the drum.
  • the return means are necessary for devices with vertical flaps where the distance from the axis of rotation of the drum to the reference plane is less than the distance from the axis of suspension to the same reference plane. The weight of the roll tends to separate the roll from the point of contact.
  • a very compact roll is thus obtained in which the successive turns are held tight against each other.
  • the device is simple and effective.
  • the return means do not have direct contact with the drum and the device operates for all shutter lengths.
  • the biasing means comprises a helical spring, one of the ends of the spring being fixed and a connecting means for connecting the other end of the spring to the suspension means.
  • This device is particularly simple to perform.
  • the stiffness of the spring depends on the mass of the flap.
  • the length of the spring at rest is long enough to reduce the difference to about 10% between the length of the spring when the flexible flap is in the open position and that when the flexible flap is closed. By reducing this difference, the variation of the restoring force exerted by the spring on the drum; a relatively constant restoring force is thus obtained.
  • the return means comprises at least one mass fixed to the suspension means so as to exert a return torque on the suspension means relative to the suspension axis.
  • the flexible flap comprises hooking means extending along the length of the flap on at least one of the faces of the latter which fix the successive turns to one another, the contact elements exerting on the means of hooking a substantially radial thrust force relative to the drum to fix the successive turns of the roller to each other.
  • the attachment means may for example be constituted by Velcro strips, strips with cooperating projections and cavities, bands with a hook, etc.
  • the contact element comprises a rotary cylinder whose axis is substantially parallel to the axis of rotation of the drum.
  • Fig.l shows a schematic front view of a flexible shutter device in the closed position of the bay
  • Fig. 2 shows a side section of a flexible shutter device in open position of the bay, according to the state of the art
  • Fig. 3 shows a side view of the device of Figure 2 in the intermediate position
  • Fig. 4 shows a side section of the device of Figure 2 in the closed position of the bay.
  • Fig. 5 shows a side view of the flexible shutter device of FIG.
  • Fig. 6 shows a side view of a flexible shutter device in the open position of the bay according to the invention
  • Fig. 7 shows a side view of the flexible flap device of Figure 6 in the intermediate position
  • Fig. 8 shows a side view of the flexible flap device of Figure 6 in the closed position of the bay
  • Fig. 9 shows a side view of a flexible shutter device in the closed position of the bay according to a particular embodiment of the invention
  • Fig. 10 shows a detailed side view of the flexible flap device of Figure 9 in the closed position of the bay
  • Fig. 11 shows a side view of the device of Figure 10, the flexible flap being wound to the open position
  • Fig. 12 shows a side view of a flexible shutter device in the closed position of the bay according to another particular embodiment of the invention
  • Fig. 13 shows a side view of the device of Figure 12 in the open position of the bay.
  • Figs. 14 and 15 show a side view of an alternative embodiment respectively in the open and closed position.
  • Fig. 16 and 17 show a detail view of the top of the slide of the device illustrated in FIGS. 14 and 15.
  • the present invention relates to a device with a flexible flap cooperating with drive means, such as a drum whose axis is connected to the shaft of an electric motor.
  • the flexible flap moves between a closed position and an open position, and is particularly intended for closing a bay in a wall or a passage, such as a corridor.
  • any flexible plane element such as a tarpaulin, articulated slats, metal sheet, etc., which is provided at its lateral ends. substantially incompressible edges. It is also a component that can be wound around a drum whose axis is perpendicular to the direction of movement of the flap during opening of the latter.
  • the flexible shutter device is shown schematically in the closed position.
  • This device comprises a flexible flap 1 with side edges 2 and 3 protruding from the plane of the shutter 1 which are advantageously formed by a continuous bead moving in slides 4 and 5.
  • the slides 4 and 5 are provided on either side of a bay 6 which is present in a wall 7.
  • Each of the slides 4, 5 has a U-shaped section, the central portion 40 is leaned against the structure of the bay 6, the opening of the U of a slide 4 being directed towards the opening of the other slide 5 .
  • Each U-shaped slider 4, 5 has a branch 42 which extends rearwards towards the wall 7, and another branch 44 which extends forwardly towards the drum 8.
  • a drum 8 on which the flexible flap 1 can be wound.
  • an electric motor 9 which drives the drum 8 about its axis 11.
  • the electric motor 9 can be arranged outside the drum 8.
  • the flap 1 is wound on the drum 8 to bring it into the open position or unwound to its closed position.
  • opening the shutter 1 it is wound around the drum 8 by forming a roller consisting of turns formed by successive superimposed layers of the shutter 1.
  • the lateral edges 2 and 3 of it are guided by the slides 4 and 5.
  • a transparent window 10 In the middle of the flexible shutter 1 is provided a transparent window 10.
  • attachment means 15 extend along the length of the flap 1 on one or each of the faces thereof.
  • the hooking means are used to fix the successive turns of the flexible flap to one another to prevent the successive layers of the flap 1 slide relative to each other.
  • Support means for the drum 8 are provided which comprise means for suspending the drum forming a suspension axis 13 parallel to the axis of rotation 11 of the drum and around which the axis of rotation of the drum can oscillate.
  • the distance from the axis of rotation 11 of the drum to the reference plane formed by the flexible flap 1 unwound in its closed position is, whatever the position of the flap, greater than the distance from the suspension axis 13 to this same reference plane.
  • FIGS. 2, 3, 4 show a side view of the flexible shutter device according to FIG. 1 in an arrangement according to the state of the art, where the distance from the axis of rotation 11 of the drum 8 to the reference plane is constantly greater than the distance from the suspension axis 13 to the reference plane.
  • the suspension means comprise, at each end of the drum 8, a flange 12 held in a fixing frame 14, itself mounted above the rack 6 fixedly to the wall 7.
  • Each flange 12 comprises a first opening wherein the axis of rotation 11 of the drum is housed. The axis of rotation of the drum 8 can rotate freely in this opening.
  • Each flange 12 comprises a second opening disposed above the axis of rotation 11. The second opening keeps the flange 12 to the fastening frame 14.
  • the flanges 12 can pivot freely around a suspension axis 13. The flanges 12 and allow to suspend the drum 8.
  • the drum 8 can freely rotate about its axis of rotation 11.
  • the axis of rotation 11 of the drum 8 can oscillate around the suspension axis 13 disposed above the drum 8, so as to allow the drum to move depending on the variation of the roll radius.
  • the angle of oscillation of the rotation axis 11 of the drum about the suspension axis 13 with respect to the vertical simply increases with the diameter of the roll.
  • a contact element 16 is provided which makes it possible to exert a thrust force at the point where the flexible flap 1 winds up (or unrolls) on the roller formed by the turns of the flap wound on the drum 8.
  • the pressing member 16 keeps the turns adjacent to each other.
  • the roller rotated by the motor exerts a thrust force F P on the lateral edges 2, 3 of the flap, parallel to these lateral edges and in the direction of advance of the flap along the Bay.
  • the lateral edges 2, 3 of the flexible flap exert on the roller a resultant force F R parallel to and opposite to the thrust force due in particular to the friction that is exerted between the slides 4, 5 and the lateral edges 2, 3 of the shutter.
  • the distance from the axis of rotation 11 of the drum to the reference plane being constantly greater than the distance from the suspension axis 13 to the reference plane, this resultant force generates a moment C R at the roller which can cause the spacing of the drum 8 with respect to the contact element 16.
  • FIG 5 shows the flexible shutter device according to the state of the art, in which the flap 1, which is unwound in order to close the bay 6, is subjected to strong winds.
  • Figures 6 to 8 show a flexible shutter device according to the invention.
  • FIGS 9 to 11 show some additional details of the device according to the invention.
  • the flanges 12 are preferably formed of a substantially flat plate of ovoid section.
  • the rotation axis 11 of the drum may for example be held flanges 12 in free rotation by a ball bearing mechanism.
  • Spherical pieces 32 make it possible to maintain the axis of rotation 11 of the drum 8 to the flanges 12, so as to prevent it from being detached from the flanges 12.
  • the contact element comprises a contact plate 16 having a substantially flat first portion 16a and a second curved portion 16b.
  • the first part 16a of the contact plate 16 is held by means of a support support 18 fixed to the wall 7 in the extension of the slides 4,5.
  • the flat portion 16a of the contact plate 16 constitutes a guide plate of the lateral edges 2, 3 of the shutter 1 from their exit from the slides 4, 5 until they are wound on the roll.
  • the second curved portion 16b of the contact plate is disposed above the drum 8 so as to surround at least a portion of the roll.
  • the curved portion 16b of the contact plate 16 thus constitutes a means for confining the turns around the roller.
  • the radius of curvature of the second curved portion 16b is preferably equal to or slightly greater than the radius of the roll when the flexible flap 1 is in the open position.
  • the curved portion 16b of the contact plate 16 is thus adjacent to the roller, when the shutter 1 is in the open position.
  • the confinement means 16b then ensures the maintenance of the outer turn of the roll for the shutter in the open position.
  • the radius of curvature of the second curved portion 16b is preferably equal to or slightly greater than the radius of the roll when the flexible flap 1 is in the closed position.
  • the curved portion 16b of the contact plate 16 is made of a flexible material (polyethylene for example) so that the curved portion 16b of the contact plate 16 deforms during the winding of the shutter 1 while remaining constantly in contact with the roller. Similarly, during unwinding, the curved portion 16b of the contact plate 16 returns to its initial position.
  • the first and second parts of the contact plate 16 constitute two separate parts.
  • the plate 16 bears against an abutment pin 17 fixed to the frame 14.
  • the contact element comprises a rotary cylinder whose axis is substantially parallel to the axis of rotation of the drum 8.
  • the cylinder is provided at the location where, during the winding and the unfolding of the flexible flap 1, the flap is wound or unrolled.
  • FIGS 10 and 11 show a biasing means helping to keep the roller in contact with the contact elements, according to a particular embodiment of the invention.
  • the device comprises a return means for keeping the roller in contact with the contact elements.
  • a return means is disposed at both ends of the drum.
  • the biasing means comprises a helical spring 20 disposed vertically along the wall 7.
  • a first end 21 of the spring 20 is held fixedly to the wall 7 of the bay 6.
  • the other end 22 of the spring 20 is attached to a rope 23 fixed to the flange 12 near the edge of the flange 12.
  • the rope 23 passes through a pulley 25 fixed to the fastening frame 14, in particular to guide the rope 23 and prevent it hinders the operation of other parts.
  • the coefficient of stiffness of the coil spring 20 depends on the weight of the flap 1, namely its dimensions.
  • the length of the spring 20 is sufficiently long so that its length varies little as the flexible flap is in the open or closed position.
  • the restoring force of the spring, applied to the flanges 12, thus remains relatively constant regardless of the position of the flap.
  • the return means thus advantageously participate in maintaining the roll against the contact element 16.
  • Figures 12 and 13 show a biasing means for keeping the roller in contact with the contact elements, according to another embodiment of the invention.
  • the flange 12 comprises a lever arm 30 arranged tangentially to the edge of the first. At the free end of the lever arm is attached a mass 31.
  • the length of the lever arm 30 can vary. The value of the mass 31 is chosen as a function of the dimensions of the flexible flap 1.
  • Figures 14 to 17 show another alternative embodiment.
  • the contact element between the roll and the wall 7 is no longer a flexible plate but consists of a rigid block 36.
  • the surface 38 of the block 36 facing the drum 8 has a particularly adapted curved shape.
  • the point of contact (where the friction is maximum) between the surface 38 and the flap 1 at the winding or unwinding point is illustrated by an arrow.
  • the front branches 44 of the slides 4 and 5 extend to a height such that the distance between the upper end of the branches 44 and the last turn wound on the drum 8 is very small order of 5 to 10 mm.
  • the point of contact is not fixed but moves progressively during the winding or unfolding of the flexible flap 1. Indeed, in the open position (Fig. 14, voluminous roll), the point of contact is located higher on the surface 38 than in the closed position (Fig. 15, small roll).
  • Another advantage of this variant embodiment is that the space (A, B) illustrated in FIGS. 16 and 17, between the upper part of the front branch 44 of the slides 4 and 5 and the last wound coil remains weak and whatever the position of the flexible flap device.
  • the spaces A and B are small enough to avoid the buckling effect that would cause a fold in the side edges (2,3). This is mainly important to the unwinding of the roll when closing the flexible shutter device. Buckling can thus be avoided without adding other means for maintaining or guiding the flap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Massaging Devices (AREA)
  • Brushes (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)

Abstract

The device has a drum (8) turning around a rotational axle (11) of the drum, where a shutter is wound around the drum in an opening position by forming a roller constituted of turns formed by successive layers of the shutter. The shutter is unwound toward a closing position. A support unit supports the drum with respect to walls of a bay (6), and a contact plate (16) exerts a radial thrust (Fp) with respect to the drum on the roller. A drum suspension unit of the support unit has a suspension axle (13) parallel to the rotation axle, where the drum oscillates around the suspension axle.

Description

TITRE TITLE
Dispositif à volet enroulable autour d'un tambourRoller shutter device around a drum
Domaine de l' inventionField of the invention
L' invention se rapporte à un dispositif à volet flexible destiné à la fermeture d'une baie ou de tout type d'ouverture coopérant avec des moyens d'entraînement permettant de déplacer le volet flexible entre une position d'ouverture et une position de fermeture. L'invention se rapporte plus particulièrement à un dispositif à volet comprenant un tambour pouvant tourner autour de son axe horizontal et autour duquel le volet est enroulé dans sa position d' ouverture en formant un rouleau constitué de spires formées par des couches successives du volet s' accrochant les unes aux autres et duquel le volet peut être déroulé et poussé vers sa position de fermeture ; le dispositif comprend également des moyens de support du tambour par rapport aux parois de la baie, des moyens de pression exerçant sur le rouleau une force de poussée sensiblement radiale par rapport au tambour. Le dispositif peut être utilisé pour la fermeture de tout type d'ouvertures, par exemple dans les bâtiments ou véhicules.The invention relates to a flexible shutter device for closing a bay or any type of opening cooperating with drive means for moving the flexible flap between an open position and a closed position . The invention relates more particularly to a shutter device comprising a drum rotatable about its horizontal axis and around which the shutter is wound in its open position by forming a roller consisting of turns formed by successive layers of the shutter. hanging from each other and from which the flap can be unwound and pushed towards its closed position; the device also comprises means for supporting the drum relative to the walls of the rack, pressure means exerting on the roller a thrust force substantially radial with respect to the drum. The device can be used for closing any type of openings, for example in buildings or vehicles.
État de la techniqueState of the art
Les dispositifs destinés à la fermeture d'une baie comportant un tambour autour duquel un volet est enroulé dans sa position d'ouverture sont connus. Dans de tels dispositifs, le volet est enroulé autour du tambour en spires ou couches successives formant ainsi un rouleau autour du tambour. Le volet est déroulé en faisant tourner le tambour autour de son axe, de sorte que le volet descend en fermant la baie pendant que les bords latéraux de ce dernier sont, de préférence, guidés dans deux chemins de guidage ou glissières s 'étendant parallèlement l'un à l'autre. Par la rotation du tambour, une force de poussée est exercée sur les bords latéraux du volet suivant leur direction longitudinale.Devices for closing a bay having a drum around which a flap is wound in its open position are known. In such devices, the shutter is wrapped around the drum in turns or layers forming a roll around the drum. The flap is unwound by rotating the drum about its axis, so that the flap goes down by closing the bay while the side edges of the latter are preferably guided in two guideways or rails extending parallel to each other. one to another. By the rotation of the drum, a thrust force is exerted on the lateral edges of the flap in their longitudinal direction.
Ces dispositifs présentent plusieurs inconvénients. Le rouleau formé par le volet enroulé en spires successives autour du tambour pendant l'ouverture du volet est très volumineux et est souvent très irrégulier. Par ailleurs, pendant la fermeture du volet, des fronces peuvent être formées dans la partie du volet située au-dessus de l'extrémité supérieure des glissières à l'endroit du tambour. Ceci peut sérieusement gêner le fonctionnement normal du dispositif. Enfin, la surface du volet devient griffée après un certain nombre d'ouvertures et de fermetures du volet. Ceci est, en particulier, un désavantage lorsque le volet présente une ou plusieurs fenêtres qui perdent leur transparence après un certain temps .These devices have several disadvantages. The roller formed by the shutter wound in successive turns around the drum during the opening of the shutter is very bulky and is often very irregular. Furthermore, during the closure of the shutter, gathers may be formed in the portion of the flap located above the upper end of the slideways at the drum. This can seriously interfere with the normal operation of the device. Finally, the surface of the flap becomes scratched after a number of openings and closures of the shutter. This is, in particular, a disadvantage when the shutter has one or more windows that lose their transparency after a certain time.
La demande de brevet WO 03/106801 décrit un dispositif à volet enroulable autour d'un tambour qui vise à remédier à ces inconvénients. Dans ce dispositif, des moyens d'accrochage disposés le long des bords latéraux du volet permettent de fixer les couches ou spires successives du rouleau les unes aux autres afin d'éviter que les couches successives du volet ne glissent les unes par rapport aux autres. Le dispositif comporte un cylindre rotatif exerçant sur le rouleau une force de poussée à l'endroit où le volet non encore enroulé vient en contact avec le rouleau et des moyens de rappel du tambour pour maintenir le rouleau en contact avec le cylindre rotatif et permettre aux spires successives d'être fixée l'une à l'autre.The patent application WO 03/106801 describes a roller shutter device around a drum which aims to remedy these disadvantages. In this device, hooking means arranged along the lateral edges of the flap make it possible to fix the successive layers or turns of the roller to each other in order to prevent the successive layers of the flap from slipping relative to one another. The device comprises a rotating cylinder exerting on the roller a thrust force at the point where the not yet wound flap comes into contact with the roller and means for returning the drum to keep the roller in contact with the rotating cylinder and allow the successive turns to be fixed one to another.
Etant donné que le diamètre du rouleau varie (suivant l'état ouvert ou fermé du volet), le tambour et le cylindre rotatif sont montés de manière mobile l'un par rapport à l'autre. En l'occurrence, le cylindre est monté de manière fixe tandis que l'arbre du tambour est monté dans un boîtier qui comporte des glissières horizontales dans lesquelles le tambour peut se déplacer horizontalement. Le tambour coopère avec deux ressorts dont une des extrémités est fixé au tambour. Les ressorts assurent le maintien en contact du rouleau avec le cylindre rotatif.Since the diameter of the roll varies (depending on the open or closed state of the flap), the drum and the rotating cylinder are movably mounted relative to each other. In this case, the cylinder is fixedly mounted while the drum shaft is mounted in a housing which has horizontal rails in which the drum can move horizontally. The drum cooperates with two springs, one end of which is fixed to the drum. The springs keep the roller in contact with the rotating cylinder.
Ce dispositif présente plusieurs inconvénients. Le nombre de pièces utilisées pour assurer le contact entre le rouleau et le cylindre rotatif est important. La pression exercée entre le cylindre rotatif et les bords latéraux du volet provoque un échauffement engendrant une usure accélérée de ces bords et des éléments de contact. De plus, la longueur des glissières du boîtier dépend de la longueur du volet. Le boîtier doit être usiné sur mesure selon les dimensions du volet, ce qui augmente le coût et le temps de fabrication et de montage. De plus, la fixation des ressorts au tambour est compliquée, car ceux-ci ne doivent pas interférer avec la rotation du tambour. Enfin, lorsque l'on déroule le volet et que celui-ci est gêné dans sa descente (frottements au niveau des glissières ou obstacles sur la course du volet) , le tambour est poussé hors contact du cylindre rotatif et les spires se détachent du rouleau. Un autre dispositif à volet motorisé est décrit dans le document DE 23 40 642 dans lequel la distance de l'axe de rotation du tambour à la paroi verticale 1 est constamment supérieure ou égale à la distance de l'axe de suspension à la paroi 1. Cette disposition est désavantageuse, comme on le verra plus loin, en cas de vents forts, en raison du risque de décrochage des spires.This device has several disadvantages. The number of parts used to ensure contact between the roll and the rotating cylinder is important. The pressure exerted between the rotating cylinder and the side edges of the flap causes heating causing accelerated wear of these edges and contact elements. In addition, the length of the slides of the housing depends on the length of the flap. The housing must be machined to size according to the dimensions of the shutter, which increases the cost and time of manufacture and assembly. In addition, the attachment of the springs to the drum is complicated because they must not interfere with the rotation of the drum. Finally, when the shutter is unwound and the latter is obstructed in its descent (friction at the slides or obstacles on the path of the shutter), the drum is pushed out of contact with the rotating cylinder and the turns are detached from the roller . Another motorized shutter device is described in DE 23 40 642 in which the distance from the axis of rotation of the drum to the vertical wall 1 is constantly greater than or equal to the distance from the suspension axis to the wall 1 This provision is disadvantageous, as will be seen below, in the case of strong winds, because of the risk of stall withdrawal.
Résumé de l'inventionSummary of the invention
Un but de l'invention est de remédier à ces inconvénients en présentant un dispositif à volet flexible qui s'ouvre et se ferme d'une manière contrôlée en garantissant qu'un rouleau très régulier soit obtenu pendant l'ouverture du volet flexible et que ce dernier se déroule sans que les spires du rouleau ne se détache intempestivement du rouleau. Plus particulièrement, l'invention vise à proposer un dispositif simple, à coût réduit, facile à fabriquer et à monter, s' usant peu et qui évite le blocage du mécanisme lors du déroulement du volet flexible .An object of the invention is to overcome these disadvantages by having a flexible shutter device which opens and closes in a controlled manner by ensuring that a very regular roller is obtained during the opening of the flexible flap and that the latter unrolls without the turns of the roll unstuck from the roll. More particularly, the invention aims to provide a simple device, low cost, easy to manufacture and assemble, using little and avoids the locking of the mechanism during the unfolding of the flexible flap.
A cette fin, le dispositif selon l'invention est caractérisé en ce que les moyens de support du tambour comprennent des moyens de suspension du tambour, les moyens de suspension formant un axe de suspension parallèle à l'axe de rotation du tambour et autour duquel l'axe de rotation du tambour peut osciller; la distance de l'axe de rotation du tambour au plan de référence formé par le volet flexible déroulé dans sa position de fermeture est, quelque soit la position du volet, inférieure à la distance de l'axe de suspension à ce même plan de référence.For this purpose, the device according to the invention is characterized in that the drum support means comprise suspension means of the drum, the suspension means forming a suspension axis parallel to the axis of rotation of the drum and around which the axis of rotation of the drum can oscillate; the distance from the axis of rotation of the drum to the reference plane formed by the flexible flap unwound in its closed position is, whatever the position of the flap, which is less than the distance from the suspension axis to this same reference plane.
Ce mode de fixation du tambour permet à celui-ci de tourner librement autour de son axe de rotation. L'axe de rotation peut osciller autour d'un axe de suspension, de façon à permettre au tambour de se déplacer en fonction de la variation du rayon du rouleau. L'angle d'oscillation de l'axe de rotation du tambour autour de l'axe de suspension par rapport à la verticale augmente simplement avec le diamètre du rouleau.This method of fixing the drum allows it to rotate freely about its axis of rotation. The axis of rotation can oscillate around a suspension axis, so as to allow the drum to move according to the variation of the radius of the roll. The angle of oscillation of the axis of rotation of the drum about the axis of suspension relative to the vertical simply increases with the diameter of the roll.
En même temps, ce mode de fixation assure au rouleau formé par les spires enroulées autour du tambour de rester maintenu en contact contre des éléments de contact lors de la fermeture du volet flexible. En effet, lors de la fermeture du volet flexible, le rouleau entraîné en rotation par le moteur exerce une force de poussée sur les bords latéraux du volet flexible, parallèle à ces bords latéraux et dans la direction d'avancée du volet flexible le long de la baie. En réaction, les bords latéraux du volet flexible exercent sur le rouleau une force résultante parallèle et opposée à la force de poussée due notamment aux frottements qui s'exercent entre les glissières et les bords latéraux du volet flexible. Cette force résultante peut entraîner l'écartement du tambour et le décrochage des spires les unes par rapport aux autres; le rouleau n'est plus en contact avec les éléments de contact. Se créent alors des spires lâches autour du rouleau qui engendre le blocage du dispositif.At the same time, this method of attachment ensures that the roll formed by the turns wound around the drum is kept in contact against contact elements when the flexible shutter is closed. Indeed, when closing the flexible flap, the roller rotated by the motor exerts a thrust force on the lateral edges of the flexible flap, parallel to these lateral edges and in the direction of advance of the flexible flap along the Bay. In response, the lateral edges of the flexible flap exert on the roller a resultant force parallel and opposite to the thrust force due in particular to the friction that is exerted between the slideways and the lateral edges of the flexible flap. This resulting force can cause the spacing of the drum and the stall of the turns relative to each other; the roll is no longer in contact with the contact elements. Loose turns are then created around the roller which causes the device to lock.
Dans le cas du dispositif selon l'invention où la distance de l'axe de rotation du tambour au plan vertical de référence est constamment inférieure à la distance de l'axe de suspension au plan vertical de référence, lors de la fermeture du volet flexible, la force de réaction résultante génère, en raison du décalage entre l'axe de suspension et l'axe de rotation du tambour, un moment qui amène le rouleau contre les éléments de contact.In the case of the device according to the invention, where the distance from the axis of rotation of the drum to the vertical plane reference point is constantly less than the distance from the suspension axis to the reference vertical plane, when closing the flexible flap, the resulting reaction force generates, due to the offset between the axis of suspension and the axis of rotation of the drum, a moment that brings the roll against the contact elements.
Il est à noter que l'effet technique dû au décalage entre l'axe de rotation du tambour et l'axe de suspension par rapport au plan de référence s'applique pour des volets fermant aussi bien des baies verticales que des baies horizontales (et toutes baies en position intermédiaire) . Lorsque le volet flexible ferme une baie horizontale, et pour autant que le tambour soit disposé au-dessus de la baie, la force de gravité s'applique en outre, lorsque la distance de l'axe de rotation du tambour au plan vertical de référence est constamment inférieure à la distance de l'axe de suspension au plan vertical de référence ; dans ce cas, l'effet du poids du tambour et du rouleau s'ajoute à l'effet de la force résultante de poussée.It should be noted that the technical effect due to the offset between the axis of rotation of the drum and the axis of suspension relative to the reference plane applies to shutters closing both vertical bays and horizontal bays (and all bays in the intermediate position). When the flexible shutter closes a horizontal bay, and provided that the drum is disposed above the bay, the gravitational force also applies, when the distance from the axis of rotation of the drum to the vertical reference plane is consistently less than the distance from the suspension axis to the vertical reference plane; in this case, the effect of the weight of the drum and the roller is added to the effect of the resulting force of thrust.
Le dispositif de maintien du tambour et du rouleau est ainsi particulièrement simple, efficace, ne nécessitant pas de multiples pièces devant être usinées spécifiquement selon les dimensions du volet flexible. Il permet en même temps d'éviter les risques de décrochage des spires lors de la fermeture du volet flexible ; le rouleau est facilement maintenu en contact avec les éléments de contact et conserve des spires constamment adjacentes l'une à l'autre.The holding device of the drum and the roller is thus particularly simple, effective, not requiring multiple parts to be machined specifically according to the dimensions of the flexible flap. At the same time, it makes it possible to avoid the risk of stalling of the turns when closing the flexible shutter; the roller is easily held in contact with the contact elements and keeps turns constantly adjacent to each other.
L'axe de suspension consiste soit en une seule pièce, soit est formé d'au moins deux axes disposés horizontalement à chaque extrémité du tambour. Les droites passant par ces deux axes sont confondues.The suspension axis consists of either a single piece or is formed of at least two axes arranged horizontally at each end of the drum. The lines passing through these two axes are merged.
Selon un mode de réalisation particulier, les moyens de suspension comprennent au moins une plaque de suspension substantiellement plane, disposée substantiellement perpendiculairement à l'axe de rotation du tambour à l'une des extrémités de celui-ci, la plaque comprenant une première ouverture dans lequel l'axe de rotation du tambour est logé et une deuxième ouverture dans lequel l'axe de suspension est logé.According to a particular embodiment, the suspension means comprise at least one substantially planar suspension plate, disposed substantially perpendicular to the axis of rotation of the drum at one end thereof, the plate comprising a first opening in which axis of rotation of the drum is housed and a second opening in which the axis of suspension is housed.
Les bords latéraux du volet flexible sont sensiblement incompressibles dans le sens longitudinal du volet, à savoir dans le sens de déplacement des bords latéraux dans les glissières. Par exemple, les bords latéraux peuvent comprendre des câbles ou fils métalliques. En utilisant un volet flexible ayant des bords latéraux sensiblement incompressibles, on assure un transfert efficace de la force résultante exercée par les bords latéraux sur le rouleau (et également de la force exercée sur les bords latéraux par la rotation du tambour) .The lateral edges of the flexible flap are substantially incompressible in the longitudinal direction of the flap, namely in the direction of displacement of the lateral edges in the slides. For example, the side edges may include wires or wires. By using a flexible flap having substantially incompressible side edges, efficient transfer of the resultant force exerted by the side edges on the roll is provided (and also the force exerted on the side edges by the rotation of the drum).
Le dispositif à volet flexible de l'invention est particulièrement avantageux pour des volets de grandes dimensions et/ou qui sont soumis à des intempéries et vents importants. Il permet d'éviter le blocage du mécanisme lors du déroulement du volet. A titre d'exemple, le dispositif doit pouvoir fonctionner pour des volets ayant jusqu'à 60 m2 de surface, pouvant être soumis à des vents allant jusqu'à 160km/h.The flexible shutter device of the invention is particularly advantageous for flaps of large dimensions and / or which are subjected to bad weather and high winds. It prevents the blockage of the mechanism during the course of the flap. For example, the device must be able to operate for shutters with up to 60 m 2 of surface, which can be subjected to winds up to 160km / h.
A cette fin, la distance de l'axe de rotation du tambour au plan de référence formé par le volet flexible déroulé dans sa position de fermeture est, quelque soit la position du volet, inférieure à la distance de l'axe de suspension à ce même plan de référence.For this purpose, the distance from the axis of rotation of the drum to the reference plane formed by the flexible flap unwound in its closed position is, whatever the position of the flap, less than the distance from the axis of suspension to the same reference plane.
Le vent qui souffle sur le volet flexible rend difficile le déroulement de ce dernier. Plus les dimensions du volet sont grandes, plus l'effet du vent sur celui-ci est important. Les forces de frottement des bords latéraux sur les glissières augmentent avec l'effet du vent. Plus les forces de frottement sur les bords latéraux du volet flexible sont importantes, plus la force résultante que les bords latéraux du volet exercent sur le rouleau est importante et plus le risque de décrochage des spires les unes par rapport aux autres est important.The wind blowing on the flexible flap makes it difficult to unfold. The larger the shutter dimensions, the greater the effect of the wind on it. The friction forces of the lateral edges on the slideways increase with the effect of the wind. The greater the frictional forces on the lateral edges of the flexible flap, the greater the resulting force that the side edges of the flap exert on the roller is important and the risk of loosening the turns relative to each other is important.
En décalant ainsi les axes de suspension et de rotation du tambour de la sorte, le moment qui amène le rouleau contre les éléments de contact, généré par les forces de frottement, est d'autant élevé que les forces de frottements sont élevées. On tourne alors en avantage l'inconvénient créé par les forces de frottements au niveau des bords latéraux du volet flexible, qui dans les autres dispositifs ont tendance à bloquer le système lors du déroulement du volet.By thus shifting the axes of suspension and rotation of the drum in this way, the moment that brings the roll against the contact elements, generated by the friction forces, is as high as the friction forces are high. The disadvantage created by the frictional forces at the side edges of the flexible flap, which in the other devices tends to block the system during the unwinding of the flap, is then advantageously rotated.
L' invention vise également à proposer un dispositif dans lequel, le volet flexible, lors de l'enroulement autour du tambour, forme des couches superposées de spires très régulières et uniformes.The invention also aims to propose a device in which the flexible flap, during winding around the drum, forms superimposed layers of very regular and uniform turns.
A cette fin, le dispositif selon l'invention est de préférence caractérisé en ce qu' il comprend des moyens de rappel exerçant un couple de rappel sur les moyens de suspension par rapport à l'axe de suspension, de sorte à garantir un contact constant entre le rouleau et les éléments de contact.For this purpose, the device according to the invention is preferably characterized in that it comprises return means exerting a return torque on the means of suspension relative to the suspension axis, so as to ensure constant contact between the roller and the contact elements.
Les moyens de rappel participent ainsi au maintien du rouleau contre les éléments de contact, lors de l'enroulement du volet autour du tambour. Notamment, les moyens de rappel sont nécessaires pour les dispositifs à volets verticaux où la distance de l'axe de rotation du tambour au plan de référence est inférieure à la distance de l'axe de suspension à ce même plan de référence. Le poids du rouleau tend à séparer le rouleau du point de contact .The return means thus participate in maintaining the roller against the contact elements, during the winding of the flap around the drum. In particular, the return means are necessary for devices with vertical flaps where the distance from the axis of rotation of the drum to the reference plane is less than the distance from the axis of suspension to the same reference plane. The weight of the roll tends to separate the roll from the point of contact.
On obtient ainsi un rouleau très compact où les spires successives sont maintenues serrées les unes contre les autres. Le dispositif est simple et efficace. Les moyens de rappel n'ont pas de contact direct avec le tambour et le dispositif fonctionne pour toutes les longueurs de volet.A very compact roll is thus obtained in which the successive turns are held tight against each other. The device is simple and effective. The return means do not have direct contact with the drum and the device operates for all shutter lengths.
Selon un premier mode de réalisation, le moyen de rappel comprend un ressort hélicoïdal, une des extrémités du ressort étant fixe et un moyen de connexion pour relier l'autre extrémité du ressort au moyen de suspension. Ce dispositif est particulièrement simple à réaliser. La raideur du ressort dépend de la masse du volet. Avantageusement, la longueur du ressort au repos est suffisamment longue de sorte à réduire la différence à environ 10% entre la longueur du ressort lorsque le volet flexible est en position d'ouverture et celle lorsque le volet flexible est fermé. En réduisant cette différence, on réduit la variation de la force de rappel exercée par le ressort sur le tambour ; on obtient ainsi une force de rappel relativement constante.According to a first embodiment, the biasing means comprises a helical spring, one of the ends of the spring being fixed and a connecting means for connecting the other end of the spring to the suspension means. This device is particularly simple to perform. The stiffness of the spring depends on the mass of the flap. Advantageously, the length of the spring at rest is long enough to reduce the difference to about 10% between the length of the spring when the flexible flap is in the open position and that when the flexible flap is closed. By reducing this difference, the variation of the restoring force exerted by the spring on the drum; a relatively constant restoring force is thus obtained.
Selon un deuxième mode de réalisation, le moyen de rappel comprend au moins une masse fixée au moyen de suspension de sorte à exercer un couple de rappel sur le moyen de suspension par rapport à l'axe de suspension.According to a second embodiment, the return means comprises at least one mass fixed to the suspension means so as to exert a return torque on the suspension means relative to the suspension axis.
Avantageusement, le volet flexible comprend des moyens d'accrochage s' étendant suivant la longueur du volet sur au moins une des faces de ce dernier qui fixent les spires successives l'une à l'autre, les éléments de contact exerçant sur les moyens d'accrochage une force de poussée sensiblement radiale par rapport au tambour pour fixer les spires successives du rouleau les unes aux autres.Advantageously, the flexible flap comprises hooking means extending along the length of the flap on at least one of the faces of the latter which fix the successive turns to one another, the contact elements exerting on the means of hooking a substantially radial thrust force relative to the drum to fix the successive turns of the roller to each other.
De la sorte, les spires sont fixées les unes aux autres lors de l'enroulement du volet flexible. On évite le dérapage des spires successives l'une à l'autre. Les moyens d'accrochage peuvent par exemple être constituées de bandes velcro, de bandes avec saillies et cavités coopérantes, de bandes avec crochet, etc.In this way, the turns are fixed to each other during the winding of the flexible flap. It avoids skidding successive turns to each other. The attachment means may for example be constituted by Velcro strips, strips with cooperating projections and cavities, bands with a hook, etc.
Selon un mode de réalisation particulier de l'invention, l'élément de contact comprend un cylindre rotatif dont l'axe est substantiellement parallèle à l'axe de rotation du tambour.According to a particular embodiment of the invention, the contact element comprises a rotary cylinder whose axis is substantially parallel to the axis of rotation of the drum.
Brève description des figures Ces aspects ainsi que d'autres aspects de l'invention seront clarifiés dans la description détaillée de modes de réalisation particuliers de l'invention, référence étant faite aux dessins des figures, dans lesquelles : Fig.l montre une vue schématique de face d'un dispositif à volet flexible en position de fermeture de la baie; Fig. 2 montre une coupe latérale d'un dispositif à volet flexible en position d'ouverture de la baie, selon l'état de la technique; Fig. 3 montre une vue latérale du dispositif de la figure 2 en position intermédiaire. Fig. 4 montre une coupe latérale du dispositif de la figure 2 en position de fermeture de la baie. Fig. 5 montre une vue latérale du dispositif à volet flexible de la figure 2 dans une position intermédiaire lorsqu'un décrochage des spires les unes par rapport aux autres se produit lors du déroulement du volet flexible ; Fig. 6 montre une vue latérale d'un dispositif à volet flexible en position d'ouverture de la baie selon l'invention ; Fig. 7 montre une vue latérale du dispositif à volet flexible de la figure 6 en position intermédiaire ; Fig. 8 montre une vue latérale du dispositif à volet flexible de la figure 6 en position de fermeture de la baie;BRIEF DESCRIPTION OF THE DRAWINGS These aspects as well as other aspects of the invention will be clarified in the detailed description of particular embodiments of the invention, reference being made to the drawings of the figures, in which: Fig.l shows a schematic front view of a flexible shutter device in the closed position of the bay; Fig. 2 shows a side section of a flexible shutter device in open position of the bay, according to the state of the art; Fig. 3 shows a side view of the device of Figure 2 in the intermediate position. Fig. 4 shows a side section of the device of Figure 2 in the closed position of the bay. Fig. 5 shows a side view of the flexible shutter device of FIG. 2 in an intermediate position when a stall of the turns relative to each other occurs during the unwinding of the flexible flap; Fig. 6 shows a side view of a flexible shutter device in the open position of the bay according to the invention; Fig. 7 shows a side view of the flexible flap device of Figure 6 in the intermediate position; Fig. 8 shows a side view of the flexible flap device of Figure 6 in the closed position of the bay;
Fig. 9 montre une vue latérale d'un dispositif à volet flexible en position de fermeture de la baie selon un mode particulier de réalisation de l' invention ; Fig. 10 montre une vue latérale détaillée du dispositif à volet flexible de la figure 9 en position de fermeture de la baie; Fig. 11 montre une vue latérale du dispositif de la figure 10, le volet flexible étant enroulé vers la position d'ouverture ;Fig. 9 shows a side view of a flexible shutter device in the closed position of the bay according to a particular embodiment of the invention; Fig. 10 shows a detailed side view of the flexible flap device of Figure 9 in the closed position of the bay; Fig. 11 shows a side view of the device of Figure 10, the flexible flap being wound to the open position;
Fig. 12 montre une vue latérale d'un dispositif à volet flexible en position de fermeture de la baie selon un autre mode particulier de réalisation de l'invention ; Fig. 13 montre une vue latérale du dispositif de la figure 12 en position d'ouverture de la baie. Les Fig. 14 et 15 montrent une vue latérale d'une variante d'exécution respectivement en position d'ouverture et de fermeture. Fig. 16 et 17 montrent une vue de détail du haut de la glissière du dispositif illustré aux fig. 14 et 15.Fig. 12 shows a side view of a flexible shutter device in the closed position of the bay according to another particular embodiment of the invention; Fig. 13 shows a side view of the device of Figure 12 in the open position of the bay. Figs. 14 and 15 show a side view of an alternative embodiment respectively in the open and closed position. Fig. 16 and 17 show a detail view of the top of the slide of the device illustrated in FIGS. 14 and 15.
Les figures ne sont pas dessinées à l'échelle. Généralement, des éléments semblables sont dénotés par des références semblables dans les figures.The figures are not drawn to scale. Generally, similar elements are denoted by similar references in the figures.
Description détaillée de modes de réalisation particuliersDetailed description of particular embodiments
II sera évident pour l'homme du métier que la présente invention n'est pas limitée à ce qui a été divulgué et décrit en particulier ci-dessus. L'invention réside dans la présentation de toutes caractéristiques nouvelles et dans chaque combinaison de ces caractéristiques. Les références numériques dans les revendications, ne limitent pas la portée de leur protection. L'usage des verbes « comprendre, comporter ou inclure » et leurs formes conjuguées, n'exclut pas la présence d'autres éléments que ceux énumérés dans les revendications. L'usage de l'article « un/une » devant un élément, n'exclut pas la présence d'une pluralité de tels éléments.It will be apparent to those skilled in the art that the present invention is not limited to what has been disclosed and described in particular above. The invention lies in the presentation of all new features and in each combination of these characteristics. The numerals in the claims do not limit the scope of their protection. The use of the verbs "understand, include or include" and their conjugate forms, does not exclude the presence of elements other than those listed in the claims. The use of the article "a / a" in front of an element, does not exclude the presence of a plurality of such elements.
D'une façon générale, la présente invention est relative à un dispositif à volet flexible coopérant avec des moyens d'entraînement, tel qu'un tambour dont l'axe est branché sur l'arbre d'un moteur électrique. Le volet flexible se déplace entre une position de fermeture et une position d'ouverture, et est destiné en particulier à la fermeture d'une baie dans une paroi ou d'un passage, tel qu'un couloir.In general, the present invention relates to a device with a flexible flap cooperating with drive means, such as a drum whose axis is connected to the shaft of an electric motor. The flexible flap moves between a closed position and an open position, and is particularly intended for closing a bay in a wall or a passage, such as a corridor.
Par le mot "volet flexible", il y a lieu de comprendre, dans le cadre de la présente invention, tout élément plan flexible tel qu'une bâche, des lamelles articulées, une tôle métallique etc., qui est pourvu à ses extrémités latérales de bords sensiblement incompressibles. Il s'agit en outre d'un volet qui peut être enroulé autour d'un tambour dont l'axe est perpendiculaire à la direction de déplacement du volet lors de l'ouverture de ce dernier.By the word "flexible flap", it is appropriate to understand, in the context of the present invention, any flexible plane element such as a tarpaulin, articulated slats, metal sheet, etc., which is provided at its lateral ends. substantially incompressible edges. It is also a component that can be wound around a drum whose axis is perpendicular to the direction of movement of the flap during opening of the latter.
Il y a, toutefois, lieu de noter qu'une préférence prononcée est donnée aux volets souples formés, par exemple, par une bâche. Les figures annexées se rapportent, par conséquent, plus particulièrement à une telle bâche.It should be noted, however, that a pronounced preference is given to flexible flaps formed, for example, by a tarpaulin. The appended figures therefore relate more particularly to such a tarpaulin.
Dans la figure 1, le dispositif à volet flexible est représenté schématiquement dans la position de fermeture. Ce dispositif comprend un volet flexible 1 avec des bords latéraux 2 et 3 saillant par rapport au plan du volet 1 qui sont avantageusement formés par un bourrelet continu se déplaçant dans des glissières 4 et 5. Les glissières 4 et 5 sont prévues de part et d'autre d'une baie 6 qui est présente dans une paroi 7.In Figure 1, the flexible shutter device is shown schematically in the closed position. This device comprises a flexible flap 1 with side edges 2 and 3 protruding from the plane of the shutter 1 which are advantageously formed by a continuous bead moving in slides 4 and 5. The slides 4 and 5 are provided on either side of a bay 6 which is present in a wall 7.
Chacune des glissières 4, 5 présente une section en forme de U dont la partie centrale 40 est adossée à la structure de la baie 6, l'ouverture du U d'une glissière 4 étant dirigée vers l'ouverture de l'autre glissière 5.Each of the slides 4, 5 has a U-shaped section, the central portion 40 is leaned against the structure of the bay 6, the opening of the U of a slide 4 being directed towards the opening of the other slide 5 .
Chaque glissière 4, 5 en forme de U comporte une branche 42 qui s'étend côté arrière, vers la paroi 7, et une autre branche 44, qui s'étend côté avant, vers le tambour 8.Each U-shaped slider 4, 5 has a branch 42 which extends rearwards towards the wall 7, and another branch 44 which extends forwardly towards the drum 8.
Au-dessus de la baie 6 est prévu un tambour 8 sur lequel le volet flexible 1 peut être enroulé. A l'intérieur du tambour 8 est agencé un moteur électrique 9 qui permet d'entraîner le tambour 8 autour de son axe 11. Alternativement le moteur électrique 9 peut être disposé à l'extérieur du tambour 8. Le volet 1 est enroulé sur le tambour 8 pour l'amener dans la position d'ouverture ou déroulé vers sa position de fermeture. Lors de l'ouverture du volet 1, celui-ci est enroulé autour du tambour 8 en formant un rouleau constitué de spires formées par des couches superposées successives du volet 1. Lors du déplacement du volet 1 vers la position de fermeture, les bords latéraux 2 et 3 de celui-ci sont guidés par les glissières 4 et 5.Above the bay 6 is provided a drum 8 on which the flexible flap 1 can be wound. Inside the drum 8 is arranged an electric motor 9 which drives the drum 8 about its axis 11. Alternatively the electric motor 9 can be arranged outside the drum 8. The flap 1 is wound on the drum 8 to bring it into the open position or unwound to its closed position. When opening the shutter 1, it is wound around the drum 8 by forming a roller consisting of turns formed by successive superimposed layers of the shutter 1. When moving the shutter 1 to the closed position, the lateral edges 2 and 3 of it are guided by the slides 4 and 5.
Au milieu du volet flexible 1 est prévue une fenêtre transparente 10.In the middle of the flexible shutter 1 is provided a transparent window 10.
De préférence, des moyens d'accrochage 15 s'étendent suivant la longueur du volet 1 sur une ou chacune des faces de ce dernier. Lorsque le volet 1 est enroulé ou déroulé autour du tambour, les moyens d'accrochages permettent de fixer les spires successives du volet flexible l'une à l'autre afin d'éviter que les couches successives du volet 1 glissent l'une par rapport à l'autre.Preferably, attachment means 15 extend along the length of the flap 1 on one or each of the faces thereof. When the shutter 1 is rolled up or unwound around the drum, the hooking means are used to fix the successive turns of the flexible flap to one another to prevent the successive layers of the flap 1 slide relative to each other.
Des moyens de support du tambour 8 sont prévus qui comprennent des moyens de suspension du tambour formant un axe de suspension 13 parallèle à l'axe de rotation 11 du tambour et autour duquel l'axe de rotation du tambour peut osciller. La distance de l'axe de rotation 11 du tambour au plan de référence formé par le volet flexible 1 déroulé dans sa position de fermeture est, quelque soit la position du volet, supérieure à la distance de l'axe de suspension 13 à ce même plan de référence.Support means for the drum 8 are provided which comprise means for suspending the drum forming a suspension axis 13 parallel to the axis of rotation 11 of the drum and around which the axis of rotation of the drum can oscillate. The distance from the axis of rotation 11 of the drum to the reference plane formed by the flexible flap 1 unwound in its closed position is, whatever the position of the flap, greater than the distance from the suspension axis 13 to this same reference plane.
Les figures 2, 3, 4 montrent une vue latérale du dispositif à volet flexible selon la Fig.l dans une disposition suivant l'état de la technique, où la distance de l'axe de rotation 11 du tambour 8 au plan de référence est constamment supérieure à la distance de l'axe de suspension 13 au plan de référence.FIGS. 2, 3, 4 show a side view of the flexible shutter device according to FIG. 1 in an arrangement according to the state of the art, where the distance from the axis of rotation 11 of the drum 8 to the reference plane is constantly greater than the distance from the suspension axis 13 to the reference plane.
Les moyens de suspension comprennent, à chaque extrémité du tambour 8, un flasque 12 maintenu à un cadre de fixation 14, lui-même monté au-dessus de la baie 6 de façon fixe à la paroi 7. Chaque flasque 12 comprend une première ouverture dans laquelle l'axe de rotation 11 du tambour vient se loger. L'axe de rotation du tambour 8 peut tourner librement dans cette ouverture. Chaque flasque 12 comprend une deuxième ouverture disposée au-dessus de l'axe de rotation 11. La deuxième ouverture permet de maintenir la flasque 12 au cadre de fixation 14. Les flasques 12 peuvent pivoter librement autour d'un axe de suspension 13. Les flasques 12 permettent ainsi de suspendre le tambour 8.The suspension means comprise, at each end of the drum 8, a flange 12 held in a fixing frame 14, itself mounted above the rack 6 fixedly to the wall 7. Each flange 12 comprises a first opening wherein the axis of rotation 11 of the drum is housed. The axis of rotation of the drum 8 can rotate freely in this opening. Each flange 12 comprises a second opening disposed above the axis of rotation 11. The second opening keeps the flange 12 to the fastening frame 14. The flanges 12 can pivot freely around a suspension axis 13. The flanges 12 and allow to suspend the drum 8.
Le tambour 8 peut librement tourner autour de son axe de rotation 11. L'axe de rotation 11 du tambour 8 peut osciller autour de l'axe de suspension 13 disposé au-dessus du tambour 8, de façon à permettre au tambour de se déplacer en fonction de la variation du rayon du rouleau.The drum 8 can freely rotate about its axis of rotation 11. The axis of rotation 11 of the drum 8 can oscillate around the suspension axis 13 disposed above the drum 8, so as to allow the drum to move depending on the variation of the roll radius.
L'angle d'oscillation de l'axe de rotation 11 du tambour autour de l'axe de suspension 13 par rapport à la verticale augmente simplement avec le diamètre du rouleau.The angle of oscillation of the rotation axis 11 of the drum about the suspension axis 13 with respect to the vertical simply increases with the diameter of the roll.
Un élément de contact 16 est prévu qui permet d'exercer une force de poussée à l'endroit où le volet flexible 1 s'enroule (ou se déroule) sur le rouleau formés par les spires du volet enroulées sur le tambour 8. L'élément de pression 16 permet de maintenir les spires adjacentes l'une à l'autre.A contact element 16 is provided which makes it possible to exert a thrust force at the point where the flexible flap 1 winds up (or unrolls) on the roller formed by the turns of the flap wound on the drum 8. The pressing member 16 keeps the turns adjacent to each other.
Lors de la fermeture du volet 1, le rouleau entraîné en rotation par le moteur exerce une force de poussée FP sur les bords latéraux 2, 3 du volet, parallèle à ces bords latéraux et dans la direction d'avancée du volet le long de la baie. En réaction, les bords latéraux 2, 3 du volet flexible exercent sur le rouleau une force résultante FR parallèle et opposée à la force de poussée due notamment aux frottements qui s'exercent entre les glissières 4, 5 et les bords latéraux 2, 3 du volet. La distance de l'axe de rotation 11 du tambour au plan de référence étant constamment supérieure à la distance de l'axe de suspension 13 au plan de référence, cette force résultante génère un moment CR au niveau du rouleau pouvant entraîner l'écartement du tambour 8 par rapport à l'élément de contact 16.When closing the shutter 1, the roller rotated by the motor exerts a thrust force F P on the lateral edges 2, 3 of the flap, parallel to these lateral edges and in the direction of advance of the flap along the Bay. In reaction, the lateral edges 2, 3 of the flexible flap exert on the roller a resultant force F R parallel to and opposite to the thrust force due in particular to the friction that is exerted between the slides 4, 5 and the lateral edges 2, 3 of the shutter. The distance from the axis of rotation 11 of the drum to the reference plane being constantly greater than the distance from the suspension axis 13 to the reference plane, this resultant force generates a moment C R at the roller which can cause the spacing of the drum 8 with respect to the contact element 16.
Cependant, en raison de la disposition relative des axes de suspension 13 et de rotation 11 par rapport au plan de référence, le poids du tambour 8 et du rouleau génère un moment CM qui ramène le tambour 8 contre l'élément de contact 16. Le poids du tambour et du rouleau contrecarre l'effet de la force résultante FR et assure que le rouleau reste en contact contre l'élément de contact 16, évitant l'écartement du rouleau.However, because of the relative disposition of the suspension and rotational axles 11 with respect to the reference plane, the weight of the drum 8 and of the roll generates a moment C M which brings the drum 8 against the contact element 16. The weight of the drum and the roller counteracts the effect of the resulting force F R and ensures that the roll remains in contact with the contact member 16, avoiding the spacing of the roll.
La figure 5 montre le dispositif à volet flexible selon l'état de la technique, dans lequel le volet 1, qui est déroulé dans le but de fermer la baie 6, est soumis à de forts vents.Figure 5 shows the flexible shutter device according to the state of the art, in which the flap 1, which is unwound in order to close the bay 6, is subjected to strong winds.
Le vent qui souffle sur le volet 1 rend difficile le déroulement de ce dernier. En effet, les forces de frottement FR des bords latéraux 2, 3 sur les glissières 4, 5 augmentent avec l'effet du vent. Plus les forces de frottement sur les bords latéraux du volet flexible sont importantes, plus le moment résultant CR qui s'exerce sur le tambour 8 est important. Lorsque les vents atteignent une certaine vitesse, le moment CM dû au poids du tambour 8 et du rouleau n'est plus suffisant pour s'opposer au moment résultant CR. Le tambour 8 s'écarte alors de l'élément de contact 16. Le tambour 8 continue malgré tout à être entraîné en rotation, ce qui provoque le décrochement des spires 34 les unes par rapport aux autres autour du rouleau et éventuellement le blocage du dispositif. II est bien entendu que les forces de frottements peuvent être dues aux vents dans le volet, mais également à tout autre raison (obstacle sur la course du volet lors de son déroulement, etc.) .The wind blowing on the shutter 1 makes it difficult to unfold. Indeed, the friction forces F R side edges 2, 3 on the slides 4, 5 increase with the effect of wind. The greater the frictional forces on the lateral edges of the flexible flap, the greater the resulting moment C R which is exerted on the drum 8 is important. When the winds reach a certain speed, the moment C M due to the weight of the drum 8 and the roller is no longer sufficient to oppose the resulting moment C R. The drum 8 then departs from the contact element 16. The drum 8 still continues to be rotated, which causes the recesses 34 to disengage from each other around the roller and possibly the locking of the device. . It is understood that the friction forces may be due to winds in the shutter, but also for any other reason (obstacle on the stroke of the flap during its course, etc.).
Les figures 6 à 8 montrent un dispositif à volet flexible selon l'invention.Figures 6 to 8 show a flexible shutter device according to the invention.
En raison de la disposition relative des axes de suspension 13 et de rotation 11 par rapport au plan de référence, les forces de frottements FR qui apparaissent au niveau des bords latéraux 2, 3 dans les glissières 4, 5 génèrent un moment CR qui ramène le tambour 8 contre l'élément de contact 16. Plus les forces de frottements sont élevées plus le moment CR est élevé. Les forces de frottement FR participent ainsi au maintien du rouleau contre l'élément de contact 16. Le rouleau ne s'écarte pas de l'élément de contact 16. On évite ainsi l'écartement du tambour 8 même en cas de gêne ou obstacle du volet flexible 1 lors de son déroulement.Due to the relative arrangement of the suspension axes 13 and rotation 11 relative to the reference plane, the friction forces F R which appear at the side edges 2, 3 in the slides 4, 5 generate a moment C R which returns the drum 8 against the contact element 16. The higher the friction forces are higher the moment C R is high. The friction forces F R thus participate in holding the roll against the contact element 16. The roll does not move away from the contact element 16. This prevents the spacing of the drum 8 even in case of inconvenience or obstacle of the flexible flap 1 during its course.
Les figures 9 à 11 montrent certains détails supplémentaires du dispositif selon l'invention.Figures 9 to 11 show some additional details of the device according to the invention.
Les flasques 12 sont de préférence formés d'une plaque substantiellement plane de section ovoïde. L'axe de rotation 11 du tambour peut par exemple être maintenu aux flasques 12 en libre rotation par un mécanisme de roulement à bille. Des pièces d' emboutement 32 permettent de maintenir l'axe de rotation 11 du tambour 8 aux flasques 12, de façon à éviter qu'il ne se détache des flasques 12. Dans le mode de réalisation illustré aux fig 9 à 11, l'élément de contact comprend une plaque de contact 16 présentant une première partie substantiellement plane 16a et une deuxième partie courbée 16b. La première partie 16a de la plaque de contact 16 est maintenue au moyen d'un support d'appui 18 fixé à la paroi 7 dans le prolongement des glissières 4,5. La partie plane 16a de la plaque de contact 16 constitue une plaque de guidage des bords latéraux 2,3 du volet 1 depuis leur sortie des glissières 4,5 jusqu'au moment où ils s'enroulent sur le rouleau. En enserrant les bords latéraux 2,3 du volet flexible 1 entre le rouleau et la plaque de contact 16a au moment ou le volet 1 s'enroule sur le rouleau, on assure la formation de couches superposées de spires très régulières et uniformes. Dans le cas de volet comprenant des moyens d'accrochage, l'élément de pression exerce une pression sur ces moyens d'accrochage afin de fixer les spires successives du volet l'une à l'autre lors de l'enroulement de ce dernier autour du tambour 8.The flanges 12 are preferably formed of a substantially flat plate of ovoid section. The rotation axis 11 of the drum may for example be held flanges 12 in free rotation by a ball bearing mechanism. Spherical pieces 32 make it possible to maintain the axis of rotation 11 of the drum 8 to the flanges 12, so as to prevent it from being detached from the flanges 12. In the embodiment illustrated in FIGS. 9 to 11, the contact element comprises a contact plate 16 having a substantially flat first portion 16a and a second curved portion 16b. The first part 16a of the contact plate 16 is held by means of a support support 18 fixed to the wall 7 in the extension of the slides 4,5. The flat portion 16a of the contact plate 16 constitutes a guide plate of the lateral edges 2, 3 of the shutter 1 from their exit from the slides 4, 5 until they are wound on the roll. By gripping the lateral edges 2, 3 of the flexible flap 1 between the roll and the contact plate 16a at the moment when the shutter 1 winds on the roll, it ensures the formation of superimposed layers of very regular and uniform turns. In the case of a flap comprising attachment means, the pressure element exerts a pressure on these attachment means in order to fix the successive turns of the shutter to one another during the winding of the latter around of the drum 8.
La deuxième partie courbée 16b de la plaque de contact est disposée au-dessus du tambour 8 de façon à entourer au moins une partie du rouleau. La partie courbée 16b de la plaque de contact 16 constitue ainsi un moyen de confinement des spires autour du rouleau. Le rayon de courbure de la deuxième partie courbée 16b est de préférence égal ou légèrement supérieur au rayon du rouleau lorsque le volet flexible 1 est en position d'ouverture. La partie courbée 16b de la plaque de contact 16 est ainsi adjacente au rouleau, lorsque le volet 1 est en position d'ouverture. Le moyen de confinement 16b assure alors le maintien de la spire extérieure du rouleau pour le volet en position d'ouverture. Selon un autre mode de réalisation non représenté, le rayon de courbure de la deuxième partie courbée 16b est de préférence égal ou légèrement supérieur au rayon du rouleau lorsque le volet flexible 1 est en position de fermeture. La partie courbe 16b de la plaque de contact 16 est réalisée dans un matériau flexible (en polyéthylène par exemple) de sorte à ce que la partie courbe 16b de la plaque de contact 16 se déforme lors de l'enroulement du volet 1 en restant constamment en contact avec le rouleau. De même, lors du déroulement, la partie courbe 16b de la plaque de contact 16 retourne vers sa position initiale.The second curved portion 16b of the contact plate is disposed above the drum 8 so as to surround at least a portion of the roll. The curved portion 16b of the contact plate 16 thus constitutes a means for confining the turns around the roller. The radius of curvature of the second curved portion 16b is preferably equal to or slightly greater than the radius of the roll when the flexible flap 1 is in the open position. The curved portion 16b of the contact plate 16 is thus adjacent to the roller, when the shutter 1 is in the open position. The confinement means 16b then ensures the maintenance of the outer turn of the roll for the shutter in the open position. According to another embodiment not shown, the radius of curvature of the second curved portion 16b is preferably equal to or slightly greater than the radius of the roll when the flexible flap 1 is in the closed position. The curved portion 16b of the contact plate 16 is made of a flexible material (polyethylene for example) so that the curved portion 16b of the contact plate 16 deforms during the winding of the shutter 1 while remaining constantly in contact with the roller. Similarly, during unwinding, the curved portion 16b of the contact plate 16 returns to its initial position.
Alternativement, les première et deuxième parties de la plaque de contact 16 constituent deux pièces distinctes.Alternatively, the first and second parts of the contact plate 16 constitute two separate parts.
Dans l'exemple illustré à la Fig. 9, la plaque 16 est en appui contre un ergot de butée 17 fixé au cadre 14.In the example illustrated in FIG. 9, the plate 16 bears against an abutment pin 17 fixed to the frame 14.
Dans un autre mode de réalisation non représenté, l'élément de contact comporte un cylindre rotatif dont l'axe est substantiellement parallèle à l'axe de rotation du tambour 8. Le cylindre est prévu à l'endroit où, lors de l'enroulement et du déroulement du volet flexible 1, le volet s'enroule ou se déroule.In another embodiment not shown, the contact element comprises a rotary cylinder whose axis is substantially parallel to the axis of rotation of the drum 8. The cylinder is provided at the location where, during the winding and the unfolding of the flexible flap 1, the flap is wound or unrolled.
Les figures 10 et 11 montrent un moyen de rappel aidant au maintien en contact du rouleau aux éléments de contact, selon un mode de réalisation particulier de 1' invention . Le dispositif comprend un moyen de rappel permettant de maintenir le rouleau en contact avec les éléments de contact. Un moyen de rappel est disposé au niveau des deux extrémités du tambour. Le moyen de rappel comprend un ressort hélicoïdal 20 disposé verticalement le long de la paroi 7. Une première extrémité 21 du ressort 20 est maintenue de manière fixe à la paroi 7 de la baie 6. L'autre extrémité 22 du ressort 20 est attachée à un filin 23 fixé au flasque 12 près du rebord du flasque 12. Le filin 23 passe par une poulie 25 fixée au cadre de fixation 14, notamment pour guider le filin 23 et éviter qu'il ne gêne le fonctionnement d'autres pièces. Le coefficient de raideur du ressort hélicoïdal 20 dépend du poids du volet 1, à savoir ses dimensions. La longueur du ressort 20 est suffisamment longue de sorte à ce que sa longueur varie peu que le volet flexible soit en position d'ouverture ou de fermeture. La force de rappel du ressort, appliquée aux flasques 12, reste ainsi relativement constante quelque soit la position du volet.Figures 10 and 11 show a biasing means helping to keep the roller in contact with the contact elements, according to a particular embodiment of the invention. The device comprises a return means for keeping the roller in contact with the contact elements. A return means is disposed at both ends of the drum. The biasing means comprises a helical spring 20 disposed vertically along the wall 7. A first end 21 of the spring 20 is held fixedly to the wall 7 of the bay 6. The other end 22 of the spring 20 is attached to a rope 23 fixed to the flange 12 near the edge of the flange 12. The rope 23 passes through a pulley 25 fixed to the fastening frame 14, in particular to guide the rope 23 and prevent it hinders the operation of other parts. The coefficient of stiffness of the coil spring 20 depends on the weight of the flap 1, namely its dimensions. The length of the spring 20 is sufficiently long so that its length varies little as the flexible flap is in the open or closed position. The restoring force of the spring, applied to the flanges 12, thus remains relatively constant regardless of the position of the flap.
Les moyens de rappel participent ainsi avantageusement au maintien du rouleau contre l'élément de contact 16.The return means thus advantageously participate in maintaining the roll against the contact element 16.
Les figures 12 et 13 montre un moyen de rappel permettant de maintenir le rouleau en contact avec les éléments de contact, selon un autre mode de réalisation de 1' invention .Figures 12 and 13 show a biasing means for keeping the roller in contact with the contact elements, according to another embodiment of the invention.
Le flasque 12 comprend un bras de levier 30 disposé de façon tangente au bord de ce premier. A l'extrémité libre du bras de levier est fixée une masse 31. La longueur du bras 30 de levier peut varier. La valeur de la masse 31 est choisie en fonction des dimensions du volet flexible 1. La présente invention a été décrite en termes de réalisations spécifiques qui sont une illustration de l'invention et qui ne doivent pas être considérées comme limitatives.The flange 12 comprises a lever arm 30 arranged tangentially to the edge of the first. At the free end of the lever arm is attached a mass 31. The length of the lever arm 30 can vary. The value of the mass 31 is chosen as a function of the dimensions of the flexible flap 1. The present invention has been described in terms of specific embodiments which are an illustration of the invention and which should not be considered as limiting.
Les figures 14 à 17 montrent une autre variante d'exécution. Dans ce cas, l'élément de contact entre le rouleau et la paroi 7 n'est plus une plaque flexible mais est constitué d'un bloc 36 rigide.Figures 14 to 17 show another alternative embodiment. In this case, the contact element between the roll and the wall 7 is no longer a flexible plate but consists of a rigid block 36.
La surface 38 du bloc 36 dirigée vers le tambour 8 présente une forme courbe particulièrement adaptée. Sur les figures, le point de contact (où le frottement est maximum) entre la surface 38 et le volet 1 au point d'enroulement ou de déroulement est illustré par une flèche.The surface 38 of the block 36 facing the drum 8 has a particularly adapted curved shape. In the figures, the point of contact (where the friction is maximum) between the surface 38 and the flap 1 at the winding or unwinding point is illustrated by an arrow.
Dans ce mode de réalisation, les branches avant 44 des glissières 4 et 5 s'étendent jusqu'à une hauteur telle que la distance entre l'extrémité supérieure des branches 44 et la dernière spire enroulée sur le tambour 8 soit très faible, de l'ordre de 5 à 10 mm.In this embodiment, the front branches 44 of the slides 4 and 5 extend to a height such that the distance between the upper end of the branches 44 and the last turn wound on the drum 8 is very small order of 5 to 10 mm.
Par contre les branches arrière 42 des glissières 4 et 5 se prolongent vers le haut plus haut que les branches avant 44, par une partie courbée qui vient s'appuyer et épouser la forme de la surface 38 du bloc 36.By against the rear branches 42 of the slides 4 and 5 extend upwardly higher than the front branches 44, by a curved portion which abuts and follow the shape of the surface 38 of the block 36.
Il a été découvert qu'avec ce mode de réalisation particulier, le point de contact n'est pas fixe mais se déplace progressivement lors de l'enroulement ou du déroulement du volet flexible 1. En effet, en position d'ouverture (Fig. 14, rouleau volumineux), le point de contact est situé plus haut sur la surface 38 qu'en position de fermeture (Fig. 15, rouleau peu volumineux) .It has been discovered that with this particular embodiment, the point of contact is not fixed but moves progressively during the winding or unfolding of the flexible flap 1. Indeed, in the open position (Fig. 14, voluminous roll), the point of contact is located higher on the surface 38 than in the closed position (Fig. 15, small roll).
Le fait que le point de contact se déplace est très avantageux puisque le frottement et donc l'usure vont se répartir sur une partie de la surface 38 du bloc 36 et ne sera pas concentrée en un seul point.The fact that the point of contact is moving is very advantageous since the friction and therefore the wear will be distributed over a portion of the surface 38 of the block 36 and will not be concentrated at a single point.
Un autre avantage de cette variante d'exécution est que l'espace (A, B) illustré sur les fig. 16 et 17, entre la partie supérieure de la branche avant 44 des glissières 4 et 5 et la dernière spire enroulée reste faible et cela quelque soit la position du dispositif à volet flexible.Another advantage of this variant embodiment is that the space (A, B) illustrated in FIGS. 16 and 17, between the upper part of the front branch 44 of the slides 4 and 5 and the last wound coil remains weak and whatever the position of the flexible flap device.
En position de fermeture, lorsque le rouleau est peu volumineux, l'espace B est tout aussi faible que l'espaceIn the closed position, when the roll is not bulky, the space B is just as small as the space
A, en position d'ouverture lorsque le rouleau est volumineux .A, in the open position when the roll is bulky.
Les espaces A et B sont suffisamment faibles pour éviter l'effet de flambage qui provoquerait un pli dans les bords latéraux (2,3). Ceci est principalement important au déroulement du rouleau, lors de la fermeture du dispositif à volet flexible. Le flambage peut ainsi être évité sans ajouter d'autre moyen de maintien ni de guidage du volet. The spaces A and B are small enough to avoid the buckling effect that would cause a fold in the side edges (2,3). This is mainly important to the unwinding of the roll when closing the flexible shutter device. Buckling can thus be avoided without adding other means for maintaining or guiding the flap.

Claims

Revendications claims
1. Dispositif à volet flexible (1) destiné à la fermeture d'une baie (6) ou de tout type d'ouverture coopérant avec des moyens d'entraînement permettant de déplacer le volet flexible (1) entre une position d'ouverture et une position de fermeture, le dispositif comprenant :1. Device with flexible flap (1) for closing a bay (6) or any type of opening cooperating with drive means for moving the flexible flap (1) between an open position and a closed position, the device comprising:
- un tambour (8) pouvant tourner autour de son axe horizontal (11) et autour duquel le volet (1) est enroulé dans sa position d'ouverture en formant un rouleau constitué de spires formées par des couches successives du volet s' accrochant les unes aux autres et duquel le volet (1) peut être déroulé et poussé vers sa position de fermeture, - des moyens de support du tambour (8) par rapport aux parois de la baie (6),- A drum (8) rotatable about its horizontal axis (11) and around which the flap (1) is wound in its open position by forming a roller consisting of turns formed by successive layers of the shutter hooking them. to each other and from which the flap (1) can be unwound and pushed towards its closed position, - means for supporting the drum (8) with respect to the walls of the bay (6),
- au moins un élément de contact (16, 36) exerçant sur le rouleau une force de poussée sensiblement radiale par rapport au tambour (8), les moyens de support du tambour (8) comprenant des moyens de suspension du tambour et ces moyens de suspension comprenant un axe de suspension (13) parallèle à l'axe de rotation (11) du tambour (8) et autour duquel le tambour (8) peut osciller, le volet flexible (1) présentant des bords latéraux (2,3) sensiblement incompressibles dans le sens longitudinal du volet (1),- At least one contact element (16, 36) exerting on the roller a substantially radial thrust force relative to the drum (8), the drum support means (8) comprising drum suspension means and these means of suspension comprising a suspension axis (13) parallel to the axis of rotation (11) of the drum (8) and around which the drum (8) can oscillate, the flexible flap (1) having side edges (2,3) substantially incompressible in the longitudinal direction of the flap (1),
caractérisé en ce que - la distance de l'axe de rotation (11) du tambour (8) au plan de référence formé par le volet flexible (1) dans sa position de fermeture est, quelque soit la position du volet (1), inférieure à la distance de l'axe de suspension (13) au plan vertical de référence.characterized in that - the distance from the axis of rotation (11) of the drum (8) to the reference plane formed by the flexible flap (1) in its closed position is, whatever the position of the flap (1), less than the distance from the suspension axis (13) to the vertical reference plane.
2. Dispositif selon la revendication 1, caractérisé en ce que les moyens de suspension comprennent au moins une plaque (12) de suspension substantiellement plane, disposée substantiellement perpendiculairement à l'axe de rotation2. Device according to claim 1, characterized in that the suspension means comprise at least one plate (12) of substantially planar suspension, disposed substantially perpendicular to the axis of rotation
(11) du tambour (8) à l'une des extrémités de celui-ci, la plaque (12) comprenant une première ouverture dans laquelle l'axe de rotation (11) du tambour (8) est logé et une deuxième ouverture dans laquelle l'axe de suspension (13) est logé.(11) the drum (8) at one end thereof, the plate (12) comprising a first opening in which the axis of rotation (11) of the drum (8) is housed and a second opening in which suspension axis (13) is accommodated.
3. Dispositif selon la revendication 1 ou 2 comprenant des moyens de rappel exerçant un couple de rappel sur le moyen de suspension par rapport à l'axe de suspension (13), de sorte à garantir un contact constant entre le rouleau et les éléments de contact (16) .3. Device according to claim 1 or 2 comprising biasing means exerting a return torque on the suspension means relative to the suspension axis (13), so as to ensure a constant contact between the roller and the elements of contact (16).
4. Dispositif selon la revendication précédente, caractérisé en ce que les moyens de rappel comprennent un ressort hélicoïdal (20).4. Device according to the preceding claim, characterized in that the return means comprises a coil spring (20).
5. Dispositif selon la revendication précédente, caractérisé en ce qu'une des extrémités (21) du ressort (20) est fixe et un moyen de connexion (23) permet de relier l'autre extrémité (22) du ressort (20) aux moyens de suspension .5. Device according to the preceding claim, characterized in that one end (21) of the spring (20) is fixed and connecting means (23) for connecting the other end (22) of the spring (20) to suspension means.
6. Dispositif selon l'une quelconque des revendications 3 à 5, caractérisé en ce que les moyens de rappel comprennent au moins une masse (31) fixée aux moyens de suspension . 6. Device according to any one of claims 3 to 5, characterized in that the return means comprise at least one mass (31) attached to the suspension means.
7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de contact comprend une plaque (16) flexible présentant une partie substantiellement plane (16a) et une deuxième partie courbée (16b) .7. Device according to any one of the preceding claims, characterized in that the contact element comprises a plate (16) having a substantially flat portion (16a) and a second curved portion (16b).
8. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'élément de contact comprend un support rigide (36) dont la surface (38) tournée vers le tambour (8) est courbée.8. Device according to any one of claims 1 to 6, characterized in that the contact element comprises a rigid support (36) whose surface (38) facing the drum (8) is curved.
9. Dispositif selon la revendication précédente, caractérisé en ce que la courbure de la surface (38) du support (36) est telle que le point de contact entre cette surface (38) et le rouleau constitué de spires se déplace lors de l'enroulement et du déroulement du volet flexible.9. Device according to the preceding claim, characterized in that the curvature of the surface (38) of the support (36) is such that the point of contact between this surface (38) and the roller constituted by turns moves during the winding and unwinding of the flexible flap.
10. Dispositif suivant l'une quelconque des revendications 8 et 9, caractérisé en ce qu'il comprend des glissières (4,10. Device according to any one of claims 8 and 9, characterized in that it comprises slides (4,
5) en forme de U, dans lesquelles les bords latéraux (2,3) du volet flexible (1) sont aptes à coulisser, la branche arrière (42) du U se prolongeant vers le haut par une partie courbée apte à épouser la surface 38 du support rigide 36. 5) in which the lateral edges (2, 3) of the flexible flap (1) are slidable, the rear branch (42) of the U extending upwards by a curved portion able to conform to the surface. 38 of the rigid support 36.
EP08708653A 2007-02-07 2008-02-04 Device with a shutter which may be wound about a drum Active EP2115261B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08708653T PL2115261T3 (en) 2007-02-07 2008-02-04 Device with a shutter which may be wound about a drum
EP08708653A EP2115261B1 (en) 2007-02-07 2008-02-04 Device with a shutter which may be wound about a drum

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07101921A EP1956180A1 (en) 2007-02-07 2007-02-07 Device with a shutter that can roll around a drum.
PCT/EP2008/051350 WO2008101799A1 (en) 2007-02-07 2008-02-04 Device with a shutter which may be wound about a drum
EP08708653A EP2115261B1 (en) 2007-02-07 2008-02-04 Device with a shutter which may be wound about a drum

Publications (2)

Publication Number Publication Date
EP2115261A1 true EP2115261A1 (en) 2009-11-11
EP2115261B1 EP2115261B1 (en) 2010-11-03

Family

ID=38234909

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07101921A Withdrawn EP1956180A1 (en) 2007-02-07 2007-02-07 Device with a shutter that can roll around a drum.
EP08708653A Active EP2115261B1 (en) 2007-02-07 2008-02-04 Device with a shutter which may be wound about a drum

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07101921A Withdrawn EP1956180A1 (en) 2007-02-07 2007-02-07 Device with a shutter that can roll around a drum.

Country Status (15)

Country Link
US (1) US20100071859A1 (en)
EP (2) EP1956180A1 (en)
JP (1) JP5285623B2 (en)
CN (1) CN101641487B (en)
AT (1) ATE487017T1 (en)
BR (1) BRPI0807349B1 (en)
CA (1) CA2677265C (en)
DE (1) DE602008003306D1 (en)
DK (1) DK2115261T3 (en)
ES (1) ES2353356T3 (en)
HK (1) HK1140803A1 (en)
PL (1) PL2115261T3 (en)
PT (1) PT2115261E (en)
RU (1) RU2430231C2 (en)
WO (1) WO2008101799A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014114528A1 (en) * 2013-01-28 2014-07-31 Assa Abloy Entrance Systems Ab Roller shutter for opening and closing a doorway
EP3221541B1 (en) * 2014-11-21 2020-04-08 Asi Doors Inc. Roll-up door with a spiral guide
DE102017218501A1 (en) * 2017-10-17 2019-04-18 BSH Hausgeräte GmbH household appliance

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Also Published As

Publication number Publication date
CA2677265C (en) 2014-09-23
WO2008101799A1 (en) 2008-08-28
PL2115261T3 (en) 2011-04-29
HK1140803A1 (en) 2010-10-22
JP2010518285A (en) 2010-05-27
DK2115261T3 (en) 2011-02-07
US20100071859A1 (en) 2010-03-25
EP2115261B1 (en) 2010-11-03
ATE487017T1 (en) 2010-11-15
CN101641487A (en) 2010-02-03
EP1956180A1 (en) 2008-08-13
RU2430231C2 (en) 2011-09-27
CA2677265A1 (en) 2008-08-28
CN101641487B (en) 2012-05-30
DE602008003306D1 (en) 2010-12-16
ES2353356T3 (en) 2011-03-01
BRPI0807349A2 (en) 2014-05-13
PT2115261E (en) 2011-01-19
JP5285623B2 (en) 2013-09-11
RU2009133276A (en) 2011-03-20
BRPI0807349B1 (en) 2018-05-15

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