EP1730365A2 - Roller curtain device - Google Patents

Roller curtain device

Info

Publication number
EP1730365A2
EP1730365A2 EP05708933A EP05708933A EP1730365A2 EP 1730365 A2 EP1730365 A2 EP 1730365A2 EP 05708933 A EP05708933 A EP 05708933A EP 05708933 A EP05708933 A EP 05708933A EP 1730365 A2 EP1730365 A2 EP 1730365A2
Authority
EP
European Patent Office
Prior art keywords
curtain
shaft
control member
drive wheel
closed position
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
EP05708933A
Other languages
German (de)
French (fr)
Other versions
EP1730365B1 (en
Inventor
Benoit Benoit COENRAETS 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 PL05708933T priority Critical patent/PL1730365T3/en
Publication of EP1730365A2 publication Critical patent/EP1730365A2/en
Application granted granted Critical
Publication of EP1730365B1 publication Critical patent/EP1730365B1/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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/58—Guiding devices
    • E06B9/581—Means to prevent or induce disengagement of shutter from side rails
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/021—Sliding doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems

Definitions

  • the invention relates to a curtain device mounted on a shaft around which this curtain can be wound to an open position and which can be unwound towards a closed position, a drive wheel being fixed coaxially on this shaft , preferably on both sides of the curtain, and cooperating with the latter in such a way as to be able to move it between these two positions.
  • Known devices of this type in particular by the documents US 5,655,591, US 5,392,836, US 5,353,859, US 4,690,194, DE 32 45,009, WO 99/19590 A, GB 1 588 438 A, DE 198 EP 0 933 A and EP 1 298 264 A require the curtain to be stretched throughout the path between its open position and its closed position.
  • the device comprises an oblong control member flexible in the direction of its length cooperating with the drive wheel, this member being arranged so as, on the one hand, to move the curtain between its open position and its closed position independently of the slack that would have formed in the curtain and, secondly, to move it along at least one of the lateral edges of the curtain and act on the the latter opposite to that directed towards the aforementioned shaft also independently of a possible slack in the curtain.
  • the control member and its mounting in the device according to the invention are such as to allow the formation of slack in the curtain during its movement, without this may hinder its operation. This is not possible with devices according to the prior art in which, on the contrary, everything is implemented to avoid slack.
  • the pitch diameter of the drive wheel is, on the one hand, smaller than the diameter of the wound portion of the curtain in its open position and, on the other hand, greater than the diameter of the aforementioned shaft or of the curled portion of the curtain in its closed position.
  • pitch diameter the distance traveled by the control member from the drive wheel during a turn of the latter divided by the number ⁇ .
  • Figure 2 is a schematic perspective view of a portion of the curtain device of this first embodiment when the curtain is in the open position.
  • Figure 3 is a view similar to that of Figure 2 when the curtain moves to its closed position.
  • Figure 4 is a view similar to that of Figure 3 when the curtain moves to its closed position and when the diameter of the curled portion of the curtain substantially corresponds to the pitch diameter of the drive wheel.
  • Figure 5 is a view similar to that of Figure 4 when the curtain is in its closed position.
  • Figure 6 is a cross section along the line VI-VI of Figure 1 of a slide in which the control member and the side edge of the curtain are guided.
  • Figure 7 is a cross-section similar to that of Figure 6, in which the control member is twisted by 90 ° before entering the slide.
  • FIG. 8 is a side view of a second embodiment of the device according to the invention in the open position.
  • Figure 9 is a side view similar to that of Figure 8 when the curtain moves to the closed position.
  • Figure 10 is a side view similar to that of Figure 8 when the curtain is in the closed position.
  • Figure 11 is, on a larger scale, a detail representation of the front of the lower part of the curtain at one of its lateral edges of this second embodiment.
  • FIG. 12 is a section along the line XII-XII of FIG. 1.
  • FIG. 13 is a section along line XIII-XIII of FIG. 9.
  • FIG. 14 is a schematic perspective view of a portion of FIG. a curtain device according to a third embodiment of the invention.
  • FIG. 15 is a section of a portion of a device according to a fourth embodiment of the invention.
  • Fig. 16 is a schematic perspective view of a fifth embodiment.
  • Figure 17 is a schematic front view of a sixth embodiment.
  • Figure 18 is a schematic perspective view of a seventh embodiment with the curtain in an intermediate position.
  • Figure 19 is a schematic longitudinal section along the line
  • Figure 20 is a view similar to that of Figure 19 with the curtain in the closed position.
  • Figure 21 relates to a variant of the seventh embodiment and is, on a larger scale, a longitudinal section of a portion of a slide in which moves a control member.
  • the present invention relates to a roll-up curtain device cooperating with drive means for moving the curtain between an open position and a closed position. It is important to note that the curtain is rollable around a shaft that is common with that of the drive means.
  • the curtain is generally intended for closing a bay in a wall or other opening, covering a swimming pool, a space such as a veranda, forming a screen, eg in front of a window, etc.
  • stiffeners such as a tarpaulin, a strip of plastic material, a canvas or sheet metal, a lattice, etc.
  • This device comprises a curtain 1, winding and unrolling vertically, which is fixed with its upper edge to a shaft 2 provided above a bay 3 and extending over substantially the entire width thereof.
  • the curtain 1 can be moved between an open position, as shown in Figures 1 and 2, and a closed position, as shown in Figure 5. In the open position, the curtain 1 is almost entirely wrapped around the shaft 2 and forms a roller 15, while in the closed position, the curtain 1 is substantially completely unwound from the shaft 2. In some cases, the curtain 1 can be fully wound around the shaft 2, so to maintain a maximum of free space below the curtain in its open position.
  • the drive wheel 7 is, in particular, constituted by a toothed wheel, while the control member 11 is formed by a narrow oblong band which is flexible but incompressible in the direction of its length, such that a strap.
  • This strip is provided with a succession of recesses 10 which are situated at the same constant distance with respect to each other in its longitudinal direction and which mesh with teeth 9 provided on the drive wheels 7 at a distance from one another. constant distance relative to each other around the circumference of a circle whose center is located on the axis 6 of the drive wheels 7.
  • these teeth and recesses have, for clarity, not shown.
  • the diameter of the drive wheels 7, in particular the pitch diameter of these wheels, is smaller than the diameter di of the roller 15 when the curtain 1 is in its open position and greater than the diameter d 2 of the shaft 2 or of the still wound portion of the curtain 1 in the closed position.
  • the diameter d 2 is normally slightly greater than the diameter of the shaft 2 in that, in the closed position, a small portion of the curtain 1 remains generally wound on the shaft 2.
  • the diameter is, of preferably equal to or greater than half the sum of diameters di and d 2 .
  • the curtain 1 In the open position, the curtain 1 is substantially completely wound around the shaft 2 and forms successive turns 14, as shown in FIG. 2. In this position, each of the ends of the lower edge 8 of the curtain 1, opposite to that mounted on the shaft 2, is maintained in the slides 5.
  • its edge lower 8 is at a distance X below the free end 16 of the corresponding controller 1 1. This distance allows some tolerance in the construction and adjustment of the device according to the invention. It is possible to calculating the dimensions of the drive wheel and the control member according to the displacement of the curtain in such a way as to reduce this distance to zero.
  • the shaft 2 is driven by an electric motor 13.
  • the roller 15, formed by the turns 14 of the curtain 1, and the wheels 7, which are fixed on the shaft 2, are therefore subjected to the same rotational movement.
  • the curtain 1, which is held by its lateral edges 4 in the slides 5, is braked and in some cases even blocked in its movement towards its closed position due to the friction that necessarily exists between these edges 4 and the slides 5 From this follows that, when the closing of the curtain is started, the turns 14 of the roll gradually enlarge and detach from each other forming slack, as shown schematically in FIG. time, the control members 11 move in the slides 5. Since, as mentioned above, the movement of the curtain 1 is hindered by the presence of said friction between the slides 5 and the side edges 4 of the curtain 1, 1 16 end of the control members 1 1 gradually approaches the lower edge 8 of the curtain 1.
  • the length of the curtain 1 is greater than the height of the bay 3 in order to compensate, for example, for adjustment tolerances which could be present, so that, in this case, a small portion of the curtain could remain wound on the shaft 2.
  • the shaft 2 is actuated by the electric motor 13 in the opposite direction to that for the closing the curtain 1.
  • the turns 14 of the curtain 1 which may have remained on the shaft 2
  • the control members 11, which are mounted freely relative to the curtain 1 are moved in the slides 5 by the action of the drive wheels 7.
  • a section of the slides 5 is shown schematically in Figure 6. These slides 5 comprise two parallel channels 18 and 19 which extend over the entire length thereof. In a first channel 18, which has a slot 20 directed towards the bay
  • the second channel 19 serves as a guide path of the control member 1 1 along the side edge 4 of the curtain. So that the lower end 16 of this control member 1 1 can rest on the lug 17 of the lower edge 8 of the curtain 1, a passage 21 is provided between said channels 18 and 19 extending over substantially the entire length of the latter to allow the lug 17 to enter the second channel 19 and thus cooperate with the control member 1 1.
  • the lug 17 extends through said passage 21 into the channel 19 As a result, part of this lug is located below the lower end 16 of the control member 11.
  • the dimensions of said second channel 19 substantially correspond to the dimensions of the control member 11, so that the latter can not bend or fold in this channel 19.
  • the control member 1 which is substantially incompressible in its longitudinal direction can exert a thrust force on the lug 17 provided at the lower edge 8 of the curtain 1 through the driving wheel 7 and thus cause the curtain 1 to its closed position.
  • the portion of the slides 5 delimiting the channel 19 is advantageously extended beyond the level of the axis 6 of the shaft 2, facing the drive wheel 7 so as to be able to guide the organ as far as possible. 11. This extension has been designated by the reference 5 'in the figures.
  • the control member 11 is, for example, constituted by a phenylene-terephthalamide strip or spear, known under the trade name "Kevlar”, provided with a tetrafluoroethylene coating, known under the trade name “Teflon”, with a thickness of 2 mm and a width of 20 mm.
  • This band has a succession of recesses 10 which cooperate with the teeth 9 provided on the drive wheel 7, as already described above.
  • the strip, which forms the control member 11 extends in the slideways 5 substantially in the same plane as the curtain 1, as the result of Figure 6.
  • the width of the passage 21 which leads to the channel 19, wherein is housed the control member 1 1 is less than the thickness of the latter, so that this body can not enter this passage 21. Since in the embodiment according to Figures 1 to 6, the control member 1 1 is formed of a narrow flexible band and rectangular cross section, it is also possible to provide that the channel 19 of rectangular section extends with its long side in a direction perpendicular to the plane of the curtain 1. In such a case, the control member undergoes a 90 ° twist in the space between the drive wheel 7 and the slide 5 Thus, the passage 21 could have a width which is greater than the thickness of the control member 11, but which is smaller than the width of the latter, as shown in FIG.
  • a second embodiment of the curtain device according to the invention differs essentially from the first embodiment described above by the fact that the control member is formed by a chain 11 meshing with a traditional toothed wheel 7 and a ballast 22 is provided at the lower edge 8 of the curtain 1 opposite the edge thereof which is fixed to the shaft 2.
  • the chain 11 is formed by a succession of articulated jerseys to each other around axes p aralleles, as is for example the case of a bicycle chain.
  • the pitch diameter C 0 of the toothed wheel is smaller than the diameter di of the roller 15, which is formed when the curtain 1 is in its open position, and greater than the diameter d 2 of the still-wound portion 15 of the curtain 1 when the latter is in the closed position.
  • This lug 17 is part of an L-shaped piece 26, one arm constitutes the lug 17 and extends parallel to the lower edge 8 of the curtain 1 in the corresponding slide 5, the other arm 27 extending parallel to the corresponding side edge 4 of the curtain 1.
  • the part 26 is, in particular, made of two symmetrical metal plates 28 and 29 which are fixed on either side of the plane of the curtain 1, so that the latter is clamped between these two plates 28 and 29.
  • the slide 5 has a section such as to guide the chain 1 1 in its longitudinal direction without it being able to disengage laterally with respect to it.
  • the lateral edge 4 of the curtain is held in the slideway 5 between the bay 3 and the place where the chain 11 is guided, exactly as in the first embodiment.
  • FIG. 14 is shown a third embodiment of the curtain device, according to the invention, which differs essentially from the two previous embodiments in that the control member is formed by a belt 33 which is closed on itself. This belt 33 is guided and driven by the drive wheels 7 fixed on the shaft 2. These drive wheels can, in this case, be formed by pulleys.
  • this belt 33 cooperates with a wheel 34, which is preferably mounted in an elastic manner, for example by means of helical springs 40, with respect to the ground so as to keep it constantly in a state tense.
  • a contact element 35 formed, for example, by a projection or hook, is fixed on the belt 33 between this lower edge 8 and the shaft 2.
  • the belt 33 is moved following the action of the drive wheel 7 and the contact element 35 approaches the lower edge 8.
  • this contact element 35 When the contact element 35 touches the lug 17 of the lower edge 8, it exerts a force on the lower edge 8 to move the curtain 1 to its closed position. As this contact member 35 moves, the turns of the curtain 1 unfurl and the slack decreases. In fact, this contact element 35 fulfills the same function as the free end 16 of the control member of the first and second embodiments.
  • the shaft 2 When opening the curtain from its closed position, the shaft 2 rotates in the opposite direction to that of the closure, so that the curtain is wound without slack on the shaft 2. Since the diameter of the drive wheel 7 is at this moment greater than the diameter of the wound portion of the curtain 1, the contact element 35 moves away from the lower edge 8 of the curtain until these diameters are substantially equal.
  • FIG. 15 relates to a fourth embodiment which is characterized with respect to the previous embodiments in that the curtain 1 is wound around a drum 36 which is coaxial with the shaft 2 and which is freely mounted on the latter .
  • the lateral face of this drum 36, directed towards the drive wheel 7, is provided with a stop 37 which cooperates with a stop 38 which is present on the side of the drive wheel 7 facing the drum 36.
  • two stops 37 and 38 are mounted at the same distance from the axis 6 of the shaft 2.
  • the control members In a first step, during the rotation of the shaft 2 and the drive wheel 7 to move the curtain 1 to its closed position, the control members, not shown in Figure 15, move towards the edge of the curtain 1 opposite to that mounted on the drum 36 while the latter remains substantially immobile. At the moment when these members act on this edge, the curtain 1 is at the same linear speed as the control member. As a result, the drum 36 rotates at a lower angular velocity than the drive wheel 7 since the diameter of the curled portion of the curtain is greater than the diameter of the drive wheel 7. As soon as the diameter the curled portion of the curtain 1 has become substantially equal to the diameter of the drive wheel 7, the drum rotates at the same angular speed as the drive wheel.
  • the rotational speed of the drum 36 increases relative to that of the drive wheel 7 to the closed position of the curtain.
  • the device may be dimensioned so that the stop 37 comes into contact with the stop 38 at the moment when the curtain reaches its closed position. It is, however, possible to provide that even in the closed position, these stops 37 and 38 do not touch.
  • the dimensions of the device are chosen in such a way that no slack is formed in the curtain 1 during the closure of the latter.
  • the drum 36 rotates only about its axis 6 by the action of the lower end of the control members 11 on the lugs provided for this purpose at the edge of the curtain 1 opposite that of the side of the shaft 2 There is no contact between the stops 37 and 38 during this movement towards the closed position of the curtain 1.
  • the stop 38 of the drive wheel 7 bears against the stop 37 of the drum 36, so that the latter is actuated by the drive wheel 7 and that the curtain 1 is wrapped around the drum 36. Since at the beginning of the opening of the curtain 1, the diameter of the curled portion of the curtain 1 is smaller than the diameter of the drive wheel 7, the control member 11 is back up faster than the curtain 1.
  • the assembly of the drum 36 and stops 37 and 38 forms a compensator whose purpose is to reduce or avoid the formation of slack when moving the curtain.
  • This compensator is of very simple construction and does not require, for example, the presence of springs.
  • the edge of the curtain 1 opposite the one facing the shaft 2 is connected to the control members during the entire closing or opening cycle and this until the lateral edges 4 of the curtain 1 emerge slides for example, by the action of a vehicle against the curtain 1.
  • the lower end 16 of the control member, or the contact element 35 is automatically separated from the lug 17.
  • the free end 16 of the lance to cooperate with the curtain is preferably beveled as also the lug 17, so as to facilitate the clearance of the side edge 5 of the curtain 1 of the slides under the action of an obstacle, as indicated above .
  • a beveled tip may be provided at the free end of the chain January 1, in the same manner as the end of the lance.
  • 16 relates to a fifth embodiment which is characterized with respect to the first embodiment represented in particular in FIG. 2, in that the end of strip 11, which forms the control member, is fixed by its opposite end to that to act on the curtain 1 on the shaft 2 and that the band 1 1 is wound or unwound between the turns 14 of the roll 15 of the curtain 1.
  • a tray as in the second embodiment, for housing the portion of the control member, formed by a strap or a lance, beyond the drive wheel.
  • FIG. 17 relates to an embodiment which differs from the preceding embodiments in that the control member formed by an incompressible lanyard 1 1, is helically wound on a frustoconical drive wheel 7 toothed or not, whose shape is such that, both during unwinding and during winding, the linear speed of movement of the strap corresponds to that of the curtain 1 between its open position and its closed position.
  • this wheel 7 When this wheel 7 is not toothed, it is preferably provided in the outer surface thereof grooves, not shown, which extend helically around the axis 6 and in which the control member 1 moves 1.
  • a housing 47 is provided around the drive wheel 7 which has in its lower part a slot
  • Figures 18 to 20 show an embodiment in which the curtain moves horizontally between an open position and a closed position.
  • the edge 8 of the curtain 1 opposite the one on the side of the shaft 2 is formed by a rigid bar whose ends form the lugs which engage in sliding in the slides 5, so that the lugs can not disengage from these last.
  • an extra thickness 41 preferably rigid, extends over the entire width of the outer face of the curtain 1, parallel to the axis of the shaft 2 and bears in the closed position of the curtain 1 against a rigid transverse bar 42 also extending parallel to the axis of the shaft 2.
  • This bar 42 is mounted on the fixed parts of the device, as the slides 5.
  • both the position of the bar 42 than that of the extra thickness 41 could be adjustable. This allows slack, which would possibly be present, to remain in the part of the curtain 1 upstream of this excess thickness 41.
  • This solution is especially important for devices that do not include slides for the lateral edges of the curtain 1 or for which it It is not possible to provide a ballast at the lower edge of the curtain opposite to that of the side of the shaft 2. This is for example the case when the curtain, whose lateral edges are not guided, moves horizontally, as in the FIGS. 18 to 20.
  • FIG. 21 relates to a feature that can be adapted to virtually all the embodiments described above, but which is especially useful for relatively long curtains and / or which move with a relatively high friction in slides.
  • This feature consists in providing in the slides 5, for example near the drive wheel, between the open position and closing the curtain, an opening 43 in which the control member 11 can penetrate during its displacement in the slideway 5 at the moment when an obstruction occurs in the slideway downstream of this opening 43 by considering the direction of movement of the control member 11 In such a case, the part 1 1 'of the control member 11 passing through this opening 43 acts on a detector 44 which then sends a signal to a control station not shown.
  • control member and the lateral edges of the curtain move in the same slide. It is possible, however, to provide a slide, or other separate means, to guide the control member which is completely independent of the slides for the lateral edges of the curtain and which allows, for example, to move the control member on a straight path from or to the drive wheel.
  • a drive wheel 7 which is fixed on the shaft 2 is provided on each side of the curtain.
  • the curtain 1 is preferably made of a material which allows the successive turns of the rolled curtain to slide relative to each other, so that the curtain is, for example, made of a smooth and continuous material, such as for example a tarpaulin made of a plastic material, possibly polished.
  • this control member n ' It acts only on the curtain to move it towards its closed position, the opening being achieved by the rotation of the shaft 2 about its axis 6 in the opposite direction to that during the closing.
  • the lug provided at the edge of the curtain opposite the side of the shaft can be retractable, for example by means of a lever, to allow easier installation and assembly of the device and also a easier reintroduction of this lug in the slides following a clearance of the curtain thereof, especially when the edge of the curtain opposite that of the side of the shaft 2 has a rigid bar, as in the seventh embodiment.
  • the curtain devices described above are provided with slides, it is clear that the presence of these slides is not essential for the invention. It is understood that the invention is not limited to the various embodiments described above, but that other variants may be considered without departing from the scope of the present invention.
  • the curtain and the drive wheels could be operated manually, for example by means of a lever mounted on the winding shaft of the curtain.
  • the ballasting may be omitted.
  • the rigid bar of the edge 8 can be replaced by two studs at each end of this edge which engage in the slideways.
  • means are advantageously provided for winding a maximum of one turn of the control member around the drive wheel parallel to a plane perpendicular to the axis of the shaft 2, so that the pitch diameter of the drive wheel remains substantially constant. In this way, the control member will always move at the same speed when closing and opening the curtain.
  • the aforementioned means are those that prevent the winding of the control member on itself around the drive wheel.

Abstract

The invention relates to a curtain device mounted on a shaft (2) about which said curtain (1) can be wound to an open position and unwound into a closed position, a drive wheel (7) fixed coaxially to said shaft (2) and cooperating with said curtain (1) such as to displace the latter between said two positions. The device comprises an oblong flexible control body (11), cooperating with the drive wheel (7), said body (11) being embodied to permit the displacement of the curtain (1) between the open position and the closed position thereof, independently of the slack formed in the curtain (1) and to be able to be displaced along at least one of the lateral edges (4) of the curtain (1) and act upon the region (8) of the latter as opposed to that arranged on the shaft (2).

Description

DISPOSITIF À RIDEAU DÉROULABLE ROLL-UP DEVICE
L'invention est relative à un dispositif à rideau monté sur un arbre autour duquel ce rideau peut être enroulé vers une position d'ouverture et dont il peut se dérouler vers une position de fermeture, une roue d'entraînement étant fixée coaxialement sur cet arbre, de préférence de part et d'autre du rideau, et coopérant avec ce dernier d'une manière telle à pouvoir le déplacer entre ces deux positions. Les dispositifs connus de ce genre, notamment par les documents US 5 655 591, US 5 392 836, US 5 353 859, US 4 690 194, DE 32 45 009, WO 99/19590 A, GB 1 588 438 A, DE 198 20 933 A et EP 1 298 264 A, exigent que le rideau soit tendu durant tout le parcours entre sa position d'ouverture et sa position de fermeture. Ceci a comme conséquence que ces dispositifs sont d'une construction très complexe et très coûteuse par la présence de ressorts, poulies de renvoi, démultiplicateurs etc. qui nécessitent généralement un réglage très précis pour permettre un bon fonctionnement et qui sont sujets a une forte usure et des réparations fréquents, surtout en cas d'accrochage du rideau. Un des buts essentiels de la présente invention est de remédier à ces inconvénients en présentant un dispositif d'une conception très simple et efficace qui est économiquement justifié et qui permet le développement de nombreuses variantes pour différentes applications. Ainsi, il est possible de concevoir des variantes permettant d'obtenir une fermeture étanche, par exemple, pour frigos, conteneurs, silos, véhicules utilitaires, tels que camions, bateaux, wagons, des variantes dans lesquelles le rideau s'étend horizontalement ou obliquement dans sa position de fermeture, etc. A cet effet, le dispositif, suivant l'invention, comprend un organe de commande oblong flexible dans le sens de sa longueur coopérant avec la roue d'entraînement, cet organe étant agencé de manière à permettre, d'une part, de déplacer le rideau entre sa position d'ouverture et sa position de fermeture indépendamment du mou qui se serait formé dans le rideau et, d'autre part, de le déplacer le long d'au moins un des bords latéraux du rideau et agir sur la zone de ce dernier opposée à celle dirigée du côté de l'arbre précité également indépendamment d'un mou éventuel dans le rideau. L'organe de commande et son montage dans le dispositif suivant l'invention sont donc tels à permettre la formation de mou dans le rideau lors de son déplacement, sans que ceci puisse gêner son fonctionnement. Ceci n'est pas possible avec les dispositifs suivant l'état antérieur de la technique dans lesquels, au contraire, tout est mis en œuvre pour éviter du mou. De cette exigence découle justement la construction complexe de ces dispositifs connus. Avantageusement, le diamètre primitif de la roue d'entraînement est, d'une part, inférieur au diamètre de la partie enroulée du rideau dans sa position d'ouverture et, d'autre part, supérieur au diamètre de l'arbre précité ou de la partie enroulée du rideau dans sa position de fermeture. Dans le cadre de la présente invention, il faut comprendre par l'expression 'diamètre primitif, la distance parcourue par l'organe de commande à partir de la roue d'entraînement pendant un tour de cette dernière divisée par le nombre π. D'autres détails et particularités de l'invention ressortiront de la description donnée, ci-après, à titre d'exemples non limitatifs, de quelques formes de réalisation particulières avec référence aux dessins annexés. La figure 1 est une vue frontale schématique d'une première forme de réalisation d'un dispositif à rideau suivant l'invention. La figure 2 est une vue en perspective schématique d'une partie du dispositif à rideau de cette première forme de réalisation lorsque le rideau est dans la position d'ouverture. La figure 3 est une vue analogue à celle de la figure 2 lorsque le rideau se déplace vers sa position de fermeture. La figure 4 est une vue analogue de celle de la figure 3 lorsque le rideau se déplace vers sa position de fermeture et lorsque le diamètre de la partie enroulée du rideau correspond sensiblement au diamètre primitif de la roue d'entraînement. La figure 5 est une vue analogue à celle de la figure 4 lorsque le rideau est dans sa position de fermeture. La figure 6 est une section transversale suivant la ligne VI- VI de la figure 1 d'une glissière dans laquelle l'organe de commande et le bord latéral du rideau sont guidés. La figure 7 est une section transversale analogue à celle de la figure 6, dans laquelle l'organe de commande a subit une torsion de 90° avant d'entrer dans la glissière. La figure 8 est une vue latérale d'une deuxième forme de réalisation du dispositif suivant l'invention dans la position d'ouverture. La figure 9 est une vue latérale analogue à celle de la figure 8 lorsque le rideau se déplace vers la position de fermeture. La figure 10 est une vue latérale analogue à celle de la figure 8 lorsque le rideau est dans la position de fermeture. La figure 11 est, à plus grande échelle, une représentation en détail de face de la partie inférieure du rideau à l'endroit d'un de ses bords latéraux de cette deuxième forme de réalisation. La figure 12 est une section suivant la ligne XII-XII de la figure 1 1. La figure 13 est une section suivant la ligne XIII-XIII de la figure 9. La figure 14 est une vue en perspective schématique d'une partie d'un dispositif à rideau suivant une troisième forme de réalisation de l'invention. La figure 15 est une section d'une partie d'un dispositif suivant une quatrième forme de réalisation de l'invention. La figure 16 est une vue en perspective schématique d'une cinquième forme de réalisation. La figure 17 est une vue schématique de face d'une sixième forme de réalisation. La figure 18 est une vue schématique en perspective d'une septième forme de réalisation avec le rideau dans une position intermédiaire. La figure 19 est une coupe longitudinale schématique suivant la ligneThe invention relates to a curtain device mounted on a shaft around which this curtain can be wound to an open position and which can be unwound towards a closed position, a drive wheel being fixed coaxially on this shaft , preferably on both sides of the curtain, and cooperating with the latter in such a way as to be able to move it between these two positions. Known devices of this type, in particular by the documents US 5,655,591, US 5,392,836, US 5,353,859, US 4,690,194, DE 32 45,009, WO 99/19590 A, GB 1 588 438 A, DE 198 EP 0 933 A and EP 1 298 264 A require the curtain to be stretched throughout the path between its open position and its closed position. This has the consequence that these devices are of a very complex construction and very expensive by the presence of springs, return pulleys, gear reducers etc. which generally require very precise adjustment to allow proper operation and which are subject to heavy wear and frequent repairs, especially when the curtain is fastened. One of the essential aims of the present invention is to overcome these disadvantages by having a device of a very simple and efficient design which is economically justified and which allows the development of numerous variants for different applications. Thus, it is possible to design variants for obtaining a seal, for example, for refrigerators, containers, silos, commercial vehicles, such as trucks, boats, wagons, variants in which the curtain extends horizontally or obliquely. in its closed position, etc. For this purpose, the device, according to the invention, comprises an oblong control member flexible in the direction of its length cooperating with the drive wheel, this member being arranged so as, on the one hand, to move the curtain between its open position and its closed position independently of the slack that would have formed in the curtain and, secondly, to move it along at least one of the lateral edges of the curtain and act on the the latter opposite to that directed towards the aforementioned shaft also independently of a possible slack in the curtain. The control member and its mounting in the device according to the invention are such as to allow the formation of slack in the curtain during its movement, without this may hinder its operation. This is not possible with devices according to the prior art in which, on the contrary, everything is implemented to avoid slack. This requirement stems precisely from the complex construction of these known devices. Advantageously, the pitch diameter of the drive wheel is, on the one hand, smaller than the diameter of the wound portion of the curtain in its open position and, on the other hand, greater than the diameter of the aforementioned shaft or of the curled portion of the curtain in its closed position. In the context of the present invention, it should be understood by the expression "pitch diameter, the distance traveled by the control member from the drive wheel during a turn of the latter divided by the number π. Other details and features of the invention will emerge from the description given below, by way of non-limiting examples, of some particular embodiments with reference to the accompanying drawings. Figure 1 is a schematic front view of a first embodiment of a curtain device according to the invention. Figure 2 is a schematic perspective view of a portion of the curtain device of this first embodiment when the curtain is in the open position. Figure 3 is a view similar to that of Figure 2 when the curtain moves to its closed position. Figure 4 is a view similar to that of Figure 3 when the curtain moves to its closed position and when the diameter of the curled portion of the curtain substantially corresponds to the pitch diameter of the drive wheel. Figure 5 is a view similar to that of Figure 4 when the curtain is in its closed position. Figure 6 is a cross section along the line VI-VI of Figure 1 of a slide in which the control member and the side edge of the curtain are guided. Figure 7 is a cross-section similar to that of Figure 6, in which the control member is twisted by 90 ° before entering the slide. Figure 8 is a side view of a second embodiment of the device according to the invention in the open position. Figure 9 is a side view similar to that of Figure 8 when the curtain moves to the closed position. Figure 10 is a side view similar to that of Figure 8 when the curtain is in the closed position. Figure 11 is, on a larger scale, a detail representation of the front of the lower part of the curtain at one of its lateral edges of this second embodiment. FIG. 12 is a section along the line XII-XII of FIG. 1. FIG. 13 is a section along line XIII-XIII of FIG. 9. FIG. 14 is a schematic perspective view of a portion of FIG. a curtain device according to a third embodiment of the invention. Fig. 15 is a section of a portion of a device according to a fourth embodiment of the invention. Fig. 16 is a schematic perspective view of a fifth embodiment. Figure 17 is a schematic front view of a sixth embodiment. Figure 18 is a schematic perspective view of a seventh embodiment with the curtain in an intermediate position. Figure 19 is a schematic longitudinal section along the line
XIX-XIX de la figure 18. La figure 20 est une vue analogue à celle de la figure 19 avec le rideau dans la position de fermeture. La figure 21 concerne une variante de la septième forme de réalisation et est, à plus grande échelle, une coupe longitudinale d'une partie d'une glissière dans laquelle se déplace un organe de commande. D'une façon générale, la présente invention est relative à un dispositif à rideau enroulable coopérant avec des moyens d'entraînement permettant de déplacer le rideau entre une position d'ouverture et une position de fermeture. Il est important de noter que le rideau est enroulable autour d'un arbre qui est commun avec celui des moyens d'entraînement. Le rideau est généralement destiné à la fermeture d'une baie dans une paroi ou toute autre ouverture, au recouvrement d'une piscine, d'un espace telle qu'une véranda, à former un écran, p.e. devant une fenêtre, etc. Cette énumération n'est bien entendue non limitative. Par le mot "rideau", il y a lieu de comprendre, dans le cadre de la présente invention, tout panneau ou surface plane d'une matière au moins partiellement souple, flexible, semi-rigide, ou avec un ou plusieurs raidisseurs, tel qu'une bâche, une bande en matière plastique, une toile ou tôle métallique, un treillis, etc., pouvant s'enrouler autour d'un arbre. Il y a, toutefois, lieu de noter qu'une préférence prononcée est donnée aux rideaux souples formés, par exemple, par une bâche, de sorte que la description donnée ci- après sera limitée à un dispositif dans lequel le rideau est formé par une bâche. Une première forme de réalisation du dispositif à rideau est représentée dans les figures 1 à 6. Ce dispositif comprend un rideau 1, s'enroulant et se déroulant verticalement, qui est fixé avec son bord supérieur à un arbre 2 prévu au-dessus d'une baie 3 et s'étendant sur sensiblement toute la largeur de cette dernière. Le rideau 1 peut être déplacé entre une position d'ouverture, comme représentée dans les figures 1 et 2, et une position de fermeture, comme représentée dans la figure 5. Dans la position d'ouverture, le rideau 1 est presque entièrement enroulé autour l'arbre 2 et forme un rouleau 15, tandis que dans la position de fermeture, le rideau 1 est pratiquement complètement déroulé de cet arbre 2. Dans certains cas, le rideau 1 peut être entièrement enroulé autour de l'arbre 2, de manière à maintenir un maximum d'espace libre en dessous du rideau dans sa position d'ouverture. Lors du déplacement du rideau 1 vers sa position d'ouverture ou de fermeture, les bords latéraux 4 du rideau 1 , qui présentent un bourrelet saillant par rapport au plan du rideau, sont guidés dans des glissières 5 montées de part et d'autre de la baie 3 sur sensiblement toute la hauteur de cette dernière. De chacun des côtés latéraux du rideau 1 est prévue une roue d'entraînement 7, faisant partie des moyens d'entraînement précités, qui est fixée coaxialement sur ledit arbre 2, de sorte que cet arbre 2 et cette roue d'entraînement 7 se déplacent à la même vitesse angulaire. Chacune de ces roues d'entraînement 7 coopère avec un organe de commande 1 1 permettant de déplacer le rideau 1 vers sa position de fermeture et qui, suivant l'invention, est monté librement par rapport au rideau 1, notamment par rapport au bord libre 8 de ce dernier sur lequel il peut effectuer une force de poussée. La roue d'entraînement 7 est, en particulier, constituée d'une roue dentée, tandis que l'organe de commande 1 1 est formé par une bande oblongue étroite et flexible, mais incompressible dans le sens de sa longueur, telle qu'une lanière. Cette bande est pourvue d'une succession d'évidements 10 qui sont situés à la même distance constante l'une par rapport à l'autre suivant sa direction longitudinale et qui engrènent avec des dents 9 prévues sur les roues d'entraînement 7 à une distance constante l'une par rapport à l'autre suivant le pourtour d'un cercle dont le centre se situe sur l'axe 6 des roues d'entraînement 7. Dans les figures 2 à 5, ces dents et évidements n'ont, pour la clarté, pas été représentés. Le diamètre do des roues d'entraînement 7, en particulier le diamètre primitif de ces roues, est inférieur au diamètre di du rouleau 15 lorsque le rideau 1 est dans sa position d'ouverture et supérieur au diamètre d2 de l'arbre 2 ou de la partie encore enroulée du rideau 1 dans la position de fermeture. En effet, le diamètre d2 est normalement légèrement supérieur au diamètre de l'arbre 2 par le fait que, dans la position de fermeture, une petite partie du rideau 1 reste généralement enroulée sur l'arbre 2. Le diamètre do est, de préférence, égal ou supérieur à la moitié de la somme des diamètres di et d2. Dans la position d'ouverture, le rideau 1 est pratiquement entièrement enroulé autour de l'arbre 2 et forme des spires successives 14, comme représenté dans la figure 2. Dans cette position, chacune des extrémités du bord inférieur 8 du rideau 1, opposé à celui monté sur l'arbre 2, est maintenue dans les glissières 5. Les organes de commande 1 1, dont l'extrémité inférieure 16 est, dans la position d'ouverture, maintenue dans la partie supérieure des glissières 5, sont également guidés dans les glissières respectives 5 lors de l'ouverture et la fermeture du rideau 1, comme ce sera décrit plus en détail en rapport avec la figure 6. Dans la position d'ouverture du rideau 1, comme montré à la figure 2, son bord inférieur 8 se trouve à une distance X en dessous de l'extrémité libre 16 de l'organe de commande correspondant 1 1. Cette distance permet une certaine tolérance dans la construction et le réglage du dispositif suivant l'invention. Il est possible de calculer les dimensions de la roue d'entraînement et de l'organe de commande en fonction du déplacement du rideau d'une manière telle à réduire cette distance à zéro. Lorsqu'on veut déplacer le rideau 1 vers sa position de fermeture à partir de sa position d'ouverture, l'arbre 2 est entraîné par un moteur électrique 13. Le rouleau 15, formé par les spires 14 du rideau 1, et les roues d'entraînement 7, qui sont fixées sur l'arbre 2, sont, par conséquent, soumis au même mouvement de rotation. Le rideau 1, qui est maintenu par ses bords latéraux 4 dans les glissières 5, est freiné et, dans certains cas, même bloqué dans son déplacement vers sa position de fermeture par suite du frottement qui existe nécessairement entre ces bords 4 et les glissières 5. De ceci résulte que, lors de du démarrage de la fermeture du rideau, les spires 14 du rouleau s'agrandissent graduellement et se détachent l'une de l'autre en formant du mou, comme représenté schématiquement dans la figure 3. En même temps, les organes de commande 11 se déplacent dans les glissières 5. Etant donné que, comme mentionné ci-dessus, le déplacement du rideau 1 est gêné par la présence dudit frottement entre les glissières 5 et les bords latéraux 4 du rideau 1, l'extrémité 16 des organes de commande 1 1 s'approche graduellement du bord inférieur 8 du rideau 1. Au moment où cette extrémité inférieure 16 est à la hauteur du bord inférieur 8 du rideau, cette extrémité 16 prend appui sur un ergot 17 qui est prévu à ce bord inférieur 8, comme représenté à la figure 3. A partir de ce moment, les organes de commande 11 , entraînés par les roues d'entraînement 7, exercent une force de poussée sur le bord inférieur 8 du rideau 1, de sorte que les bords latéraux 4 du rideau 1 se déplacent dans les glissières 5 suivant leur direction longitudinale à la même vitesse que l'organe de commande 11. Dès que le diamètre du rouleau 15, formé par la partie enroulée du rideau 1 , est devenu inférieur au diamètre primitif do de la roue d'entraînement 7, la vitesse de déplacement des organes de commande 11 devient plus grande que la vitesse de déplacement circonférentiel du rouleau 15. Ainsi, le mou formé disparaît au fur et à mesure que le rideau s'approche de sa position de fermeture, comme représenté dans la figure 5. Au moment où le rideau 1 est dans sa position de fermeture, il est pratiquement complètement déroulé de l'arbre 2. Toutefois, comme déjà mentionné ci- dessus, il est possible que la longueur du rideau 1 soit plus grande que la hauteur de la baie 3 pour pouvoir compenser, par exemple, des tolérances de réglage qui pourraient être présentes, de sorte que, dans ce cas, une petite partie du rideau pourrait rester enroulée sur l'arbre 2. Lors de la réouverture du rideau, l'arbre 2 est actionné par le moteur électrique 13 dans le sens opposé à celui pour la fermeture du rideau 1. Ainsi, les spires 14 du rideau 1, qui sont éventuellement restées sur l'arbre 2, sont, dans un premier temps, tendues autour de ce dernier et ensuite le restant du rideau 1 est enroulé normalement autour de l'arbre 2. Simultanément, les organes de commande 11, qui sont montés librement par rapport au rideau 1, sont déplacés dans les glissières 5 par l'action des roues d'entraînement 7. Etant donné qu'au départ le diamètre primitif do de ces roues d'entraînement 7 est supérieur au diamètre de la partie enroulée du rideau 1, l'extrémité inférieure 16 de l'organe de commande 1 1 s'éloigne graduellement du bord inférieur 8 du rideau 1. Ensuite, lorsque le diamètre de la partie enroulée du rideau 1 devient supérieur au diamètre primitif des roues d'entraînement 7 l'effet inverse se produit, et le rideau 1 subit un déplacement à une vitesse supérieure par rapport à celle des organes de commande 1 1. Au moment où le rideau 1 est dans sa position d'ouverture, comme représenté dans les figures 1 et 2, la distance entre l'extrémité inférieure 16 des organes de commande 11 et le bord inférieur 8 du rideau 1 est de nouveau sensiblement égale à la distance X ou zéro. La partie de l'organe de commande 1 1 qui, dans la position d'ouverture, est située au-delà des roues d'entraînement 7 par rapport à son extrémité inférieure 16 peut être collectée dans une enceinte non représentée aux figures. Une section des glissières 5 est montrée schématiquement dans la figure 6. Ces glissières 5 comprennent deux canaux parallèles 18 et 19 qui s'étendent sur toute la longueur celles-ci. Dans un premier canal 18, qui présente une fente 20 dirigée vers la baieXIX-XIX of Figure 18. Figure 20 is a view similar to that of Figure 19 with the curtain in the closed position. Figure 21 relates to a variant of the seventh embodiment and is, on a larger scale, a longitudinal section of a portion of a slide in which moves a control member. In general, the present invention relates to a roll-up curtain device cooperating with drive means for moving the curtain between an open position and a closed position. It is important to note that the curtain is rollable around a shaft that is common with that of the drive means. The curtain is generally intended for closing a bay in a wall or other opening, covering a swimming pool, a space such as a veranda, forming a screen, eg in front of a window, etc. This enumeration is of course not exhaustive. By the word "curtain", it should be understood, in the context of the present invention, any panel or flat surface of a material at least partially flexible, flexible, semi-rigid, or with one or more stiffeners, such a tarpaulin, a strip of plastic material, a canvas or sheet metal, a lattice, etc., which can be wrapped around a tree. It should be noted, however, that a pronounced preference is given to soft curtains formed, for example, by a tarpaulin, so that the description given hereinafter will be limited to a device in which the curtain is formed by a tarpaulin. A first embodiment of the curtain device is shown in Figures 1 to 6. This device comprises a curtain 1, winding and unrolling vertically, which is fixed with its upper edge to a shaft 2 provided above a bay 3 and extending over substantially the entire width thereof. The curtain 1 can be moved between an open position, as shown in Figures 1 and 2, and a closed position, as shown in Figure 5. In the open position, the curtain 1 is almost entirely wrapped around the shaft 2 and forms a roller 15, while in the closed position, the curtain 1 is substantially completely unwound from the shaft 2. In some cases, the curtain 1 can be fully wound around the shaft 2, so to maintain a maximum of free space below the curtain in its open position. When moving the curtain 1 towards its open or closed position, the lateral edges 4 of the curtain 1, which have a bead protruding from the plane of the curtain, are guided in slides 5 mounted on either side of the curtain the bay 3 over substantially the entire height of the latter. On each of the lateral sides of the curtain 1 is provided a drive wheel 7, forming part of the abovementioned driving means, which is fixed coaxially on said shaft 2, so that this shaft 2 and this drive wheel 7 move at the same angular velocity. Each of these driving wheels 7 cooperates with a control member 1 1 for moving the curtain 1 to its closed position and which, according to the invention, is freely mounted relative to the curtain 1, in particular with respect to the free edge 8 of the latter on which it can perform a pushing force. The drive wheel 7 is, in particular, constituted by a toothed wheel, while the control member 11 is formed by a narrow oblong band which is flexible but incompressible in the direction of its length, such that a strap. This strip is provided with a succession of recesses 10 which are situated at the same constant distance with respect to each other in its longitudinal direction and which mesh with teeth 9 provided on the drive wheels 7 at a distance from one another. constant distance relative to each other around the circumference of a circle whose center is located on the axis 6 of the drive wheels 7. In Figures 2 to 5, these teeth and recesses have, for clarity, not shown. The diameter of the drive wheels 7, in particular the pitch diameter of these wheels, is smaller than the diameter di of the roller 15 when the curtain 1 is in its open position and greater than the diameter d 2 of the shaft 2 or of the still wound portion of the curtain 1 in the closed position. Indeed, the diameter d 2 is normally slightly greater than the diameter of the shaft 2 in that, in the closed position, a small portion of the curtain 1 remains generally wound on the shaft 2. The diameter is, of preferably equal to or greater than half the sum of diameters di and d 2 . In the open position, the curtain 1 is substantially completely wound around the shaft 2 and forms successive turns 14, as shown in FIG. 2. In this position, each of the ends of the lower edge 8 of the curtain 1, opposite to that mounted on the shaft 2, is maintained in the slides 5. The control members 1 1, whose lower end 16 is, in the open position, maintained in the upper part of the slides 5, are also guided in the respective slides 5 when opening and closing the curtain 1, as will be described in more detail in connection with Figure 6. In the opening position of the curtain 1, as shown in Figure 2, its edge lower 8 is at a distance X below the free end 16 of the corresponding controller 1 1. This distance allows some tolerance in the construction and adjustment of the device according to the invention. It is possible to calculating the dimensions of the drive wheel and the control member according to the displacement of the curtain in such a way as to reduce this distance to zero. When it is desired to move the curtain 1 towards its closed position from its open position, the shaft 2 is driven by an electric motor 13. The roller 15, formed by the turns 14 of the curtain 1, and the wheels 7, which are fixed on the shaft 2, are therefore subjected to the same rotational movement. The curtain 1, which is held by its lateral edges 4 in the slides 5, is braked and in some cases even blocked in its movement towards its closed position due to the friction that necessarily exists between these edges 4 and the slides 5 From this follows that, when the closing of the curtain is started, the turns 14 of the roll gradually enlarge and detach from each other forming slack, as shown schematically in FIG. time, the control members 11 move in the slides 5. Since, as mentioned above, the movement of the curtain 1 is hindered by the presence of said friction between the slides 5 and the side edges 4 of the curtain 1, 1 16 end of the control members 1 1 gradually approaches the lower edge 8 of the curtain 1. At the time when the lower end 16 is at the height of the lower edge 8 of the curtain, the end 16 is supported on a lug 17 which is provided at this lower edge 8, as shown in Figure 3. From this moment, the control members 11, driven by the drive wheels 7, exert a thrust force on the lower edge 8 of the curtain 1, so that the lateral edges 4 of the curtain 1 move in the rails 5 in their longitudinal direction at the same speed as the control member 11. As soon as the diameter of the roll 15, formed by the rolled part 1, the speed of movement of the control members 11 becomes larger than the circumferential movement speed of the roller 15. Thus, the formed slack disappears as as the curtain approaches its closed position, as shown in FIG. 5. At the moment when the curtain 1 is in its closed position, it is practically completely unrolled from the shaft 2. However, as As already mentioned above, it is possible that the length of the curtain 1 is greater than the height of the bay 3 in order to compensate, for example, for adjustment tolerances which could be present, so that, in this case, a small portion of the curtain could remain wound on the shaft 2. When reopening the curtain, the shaft 2 is actuated by the electric motor 13 in the opposite direction to that for the closing the curtain 1. Thus, the turns 14 of the curtain 1, which may have remained on the shaft 2, are initially stretched around the latter and then the remainder of the curtain 1 is normally wound around the curtain 1 2. Simultaneously, the control members 11, which are mounted freely relative to the curtain 1, are moved in the slides 5 by the action of the drive wheels 7. Since initially the original diameter of these drive wheels 7 is greater than the diameter of the curled portion of the curtain 1, the lower end 16 of the control member 1 1 moves away gradually from the lower edge 8 of the curtain 1. Then when the diameter of the part rolled up the curtain 1 becomes superior r the original diameter of the drive wheels 7 the opposite effect occurs, and the curtain 1 is displaced at a higher speed compared to that of the control members 1 1. At the moment when the curtain 1 is in its position d opening, as shown in Figures 1 and 2, the distance between the lower end 16 of the control members 11 and the lower edge 8 of the curtain 1 is again substantially equal to the distance X or zero. The portion of the control member 1 1 which, in the open position, is located beyond the drive wheels 7 with respect to its lower end 16 can be collected in a chamber not shown in the figures. A section of the slides 5 is shown schematically in Figure 6. These slides 5 comprise two parallel channels 18 and 19 which extend over the entire length thereof. In a first channel 18, which has a slot 20 directed towards the bay
3, est logé le bord latéral 4 du rideau 1. La partie de ce dernier adjacente à ce bord latéral 4 s'étend à travers la fente 20. Ainsi, le rideau 1 peut être déplacé suivant la direction longitudinale des glissières pendant que chacun des bords latéraux 4 est guidé dans ledit premier canal 18. Le deuxième canal 19 sert comme chemin de guidage de l'organe de commande 1 1 le long du bord latéral 4 du rideau. Afin que l'extrémité inférieure 16 de cet organe de commande 1 1 puisse s'appuyer sur l'ergot 17 du bord inférieur 8 du rideau 1, un passage 21 est prévu entre lesdits canaux 18 et 19 s'étendant sur sensiblement toute la longueur de ces derniers pour permettre à l'ergot 17 de pénétrer dans le deuxième canal 19 et de coopérer ainsi avec l'organe de commande 1 1. Le fait que l'ergot 17 s'étend à travers ledit passage 21 jusque dans le canal 19 a comme résultat qu'une partie de cet ergot est située en dessous de l'extrémité inférieure 16 de l'organe de commande 11. Les dimensions dudit deuxième canal 19 correspondent sensiblement aux dimensions de l'organe de commande 1 1, de sorte que ce dernier ne peut pas se courber ou plier dans ce canal 19. De cette façon, l'organe de commande 1 1, qui est sensiblement incompressible dans sa direction longitudinale peut exercer une force de poussée sur l'ergot 17 prévu au bord inférieur 8 du rideau 1 par l'intermédiaire de la roue d'entraînement 7 et entraîner ainsi le rideau 1 vers sa position de fermeture. La partie des glissières 5 délimitant le canal 19 est, avantageusement, prolongé jusqu'au delà du niveau de l'axe 6 de l'arbre 2, en regard de la roue d'entraînement 7 de manière à pouvoir guider au maximum l'organe de commande 11. Ce prolongement a été désigné par la référence 5' dans les figures. L'organe de commande 1 1 est, par exemple, constitué d'une bande ou lance en -phenyleneterephtalamide, connu sous le nom commercial "Kevlar", pourvu d'un revêtement en tetrafluoroethylène, connu sous le nom commercial "Teflon", avec une épaisseur de 2 mm et une largeur de 20 mm. Cette bande présente une succession d'évidements 10 qui coopèrent avec les dents 9 prévues sur la roue d'entraînement 7, comme déjà décrit ci-dessus. Dans la forme de réalisation du dispositif, suivant l'invention, représentée dans les figures 1 à 6, la bande, qui forme l'organe de commande 11, s'étend dans les glissières 5 sensiblement dans le même plan que le rideau 1, comme il résulte de la figure 6. La largeur du passage 21 qui aboutit au canal 19, dans lequel est logé l'organe de commande 1 1 est inférieure à l'épaisseur de ce dernier, de sorte que cet organe ne peut pas pénétrer dans ce passage 21. Etant donné que, dans la forme de réalisation suivant les figures 1 à 6, l'organe de commande 1 1 est formé d'une bande souple étroite et de section transversale rectangulaire, il est également possible de prévoir que le canal 19 de section rectangulaire s'étend avec son grand côté dans une direction perpendiculaire par rapport au plan du rideau 1. Dans un tel cas, l'organe de commande subit une torsion de 90° dans l'espace entre la roue d'entraînement 7 et la glissière 5. Ainsi, le passage 21 pourrait avoir une largeur qui est plus grande que l'épaisseur de l'organe de commande 11, mais qui est inférieure à la largeur de ce dernier, comme montré dans la figure 7. Dans les figures 8 à 13, une deuxième forme de réalisation du dispositif à rideau, suivant l'invention, a été représentée qui se distingue essentiellement par rapport à la première forme de réalisation décrite ci-dessus par le fait que l'organe de commande est formée par une chaîne 11 s'engrenant avec une roue dentée traditionnelle 7 et qu'un lestage 22 est prévu au bord inférieur 8 du rideau 1 opposé au bord de ce dernier qui est fixé à l'arbre 2. La chaîne 11 est formée par une succession de maillots articulés l'un à l'autre autour d'axes parallèles, comme c'est par exemple le cas d'une chaîne à vélo. Le diamètre primitif do de la roue dentée est inférieur au diamètre di du rouleau 15, qui est formé lorsque le rideau 1 est dans sa position d'ouverture, et supérieur au diamètre d2 de la partie encore enroulée 15 du rideau 1 lorsque ce dernier est dans la position de fermeture. Lors de la fermeture du rideau 1, par la rotation de l'arbre 2, à partir de la position d'ouverture, comme représenté dans la figure 8, le rideau 1 se déroule de cet arbre 2 sans que du mou soit formé par suite de l'action du poids du lestage 22. La chaîne 11 se déplace également suite à l'action de la roue dentée 7 dans la glissière 5. La roue dentée 7 est fixée coaxialement sur l'arbre 2. Cette chaîne 11, qui n'est pas fermée sur elle-même, est débitée à partir d'un bac 25 qui est installé en dessous de l'arbre 2. Comme mentionné ci-dessus, lorsque le rideau 1 se déplace vers sa position de fermeture, il n'y a normalement pas de formation de mou autour de l'arbre 2 suite à l'action de traction exercée par le lestage 22 sur le rideau 1. Toutefois, lorsque sous l'action du vent, qui pourrait exercer une force de poussée sur le plan du rideau 1 pendant la fermeture de ce dernier, les bords latéraux 4 du rideau 1 sont freinés dans les glissières 5, le déplacement du rideau 1 s'arrête ou est ralenti. A ce moment, du mou se forme autour de l'arbre 2 et l'extrémité inférieure 16 de la chaîne 1 1 , qui continue à se déplacer dans la glissière 5, s'approche du bord inférieur 8 du rideau 1 et entraîne celui-ci. Ceci est bien entendu également le cas pour la première forme de réalisation décrite ci-dessus. Un détail de la chaîne 1 1 et de l'ergot 17 au bord inférieur 8 du rideau 1 est représenté dans la figure 1 1. Cet ergot 17 fait partie d'une pièce 26 en forme de L dont un bras constitue l'ergot 17 et s'étend parallèlement au bord inférieur 8 du rideau 1 dans la glissière correspondante 5, l'autre bras 27 s'étendant parallèlement au bord latéral correspondant 4 du rideau 1. La pièce 26 est, en particulier, constituée de deux plaques métalliques symétriques 28 et 29 qui sont fixées de part et d'autre du plan du rideau 1, de sorte que ce dernier est serré entre ces deux plaques 28 et 29. La glissière 5 présente une section telle à guider la chaîne 1 1 suivant sa direction longitudinale sans qu'elle ne puisse se dégager latéralement par rapport à celle-ci. Le bord latéral 4 du rideau est maintenu dans la glissière 5 entre la baie 3 et l'endroit où est guidée la chaîne 11, exactement comme dans la première forme de réalisation. Lorsqu'une force au-dessus d'une certaine valeur est exercée sur le rideau 1 transversalement au plan de ce dernier, par exemple, par l'action d'un véhicule qui se heurte contre le rideau 1, les bords latéraux 4 de ce dernier se dégagent des glissières 5. A cet effet, il est prévu que les bords latéraux 4 du rideau 1 ou les glissières 5 peuvent se déformer élastiquement. Etant donné que la chaîne 1 1 n'est pas fixée au rideau 1, l'ergot 17 se dégage sans problème de la chaîne 11. Dans la figure 14 est représentée une troisième forme de réalisation du dispositif à rideau, suivant l'invention, qui se distingue essentiellement des deux formes de réalisation précédentes par le fait que l'organe de commande est formé par une courroie 33 qui est fermée sur elle-même. Cette courroie 33 est guidée et entraînée par les roues d'entraînement 7 fixées sur l'arbre 2. Ces roues d'entraînement peuvent, dans ce cas, être formées par des poulies. Dans la partie inférieure de la baie 3, cette courroie 33 coopère avec une roulette 34, qui est de préférence montée d'une manière élastique, par exemple au moyen de ressorts hélicoïdaux 40, par rapport au sol afin de la maintenir constamment dans un état tendu. Un élément de contact 35, formé, par exemple, par une saillie ou crochet, est fixé sur la courroie 33 entre ce bord inférieur 8 et l'arbre 2. Lors du déroulement du rideau 1 par la rotation de l'arbre 2, les spires successives 14 du rouleau 15 s'agrandissent et forment du mou comme dans la première forme de réalisation. Simultanément, la courroie 33 est déplacée suite à l'action de la roue d'entraînement 7 et l'élément de contact 35 se rapproche du bord inférieur 8. Lorsque l'élément de contact 35 touche l'ergot 17 du bord inférieur 8, il exerce une force sur ce bord inférieur 8 afin de déplacer le rideau 1 vers sa position de fermeture. Au fur et à mesure que cet élément de contact 35 se déplace, les spires du rideau 1 se déroulent et le mou diminue. En fait, cet élément de contact 35 rempli la même fonction que l'extrémité libre 16 de l'organe de commande de la première et de la deuxième forme de réalisation. Lors de l'ouverture du rideau à partir de sa position de fermeture, l'arbre 2 tourne dans le sens opposé à celui de la fermeture, de sorte que le rideau est enroulé sans mou sur l'arbre 2. Etant donné que le diamètre de la roue d'entraînement 7 est à ce moment supérieur au diamètre de la partie enroulée du rideau 1, l'élément de contact 35 s'éloigne du bord inférieur 8 du rideau jusqu'à ce que ces diamètres sont sensiblement égaux. Pendant l'enroulement de la partie restante du rideau 1, son bord inférieur 8 s'approche graduellement jusqu'à une petite distance de l'élément de contact 35, au moment où le rideau se trouve dans la position d'ouverture. La figure 15 concerne une quatrième forme de réalisation qui se caractérise par rapport aux précédentes formes de réalisation par le fait que le rideau 1 est enroulé autour d'un tambour 36 qui est coaxial avec l'arbre 2 et qui est monté librement sur ce dernier. La face latérale de ce tambour 36, dirigée vers la roue d'entraînement 7, est pourvue d'une butée 37 qui coopère avec une butée 38 qui est présente sur le côté de la roue d'entraînement 7 en regard du tambour 36. Les deux butées 37 et 38 sont montées à la même distance de l'axe 6 de l'arbre 2. Dans un premier temps, lors de la mise en rotation de l'arbre 2 et de la roue d'entraînement 7 pour déplacer le rideau 1 vers sa position de fermeture, les organes de commande, non représentés à la figure 15, se déplacent vers le bord du rideau 1 opposé à celui monté sur le tambour 36 pendant que ce dernier reste sensiblement immobile. Au moment où ces organes agissent sur ce bord, le rideau 1 se déroule à la même vitesse linéaire que l'organe de commande. Ceci a comme conséquence que le tambour 36 tourne à une vitesse angulaire inférieure à celle de la roue d'entraînement 7 étant donné que le diamètre de la partie enroulée du rideau est supérieur au diamètre de la roue d'entraînement 7. Dès que le diamètre de la partie enroulée du rideau 1 est devenu sensiblement égal au diamètre de la roue d'entraînement 7, le tambour tourne à la même vitesse angulaire que la roue d'entraînement. Au fur et à mesure que le diamètre de la partie enroulée du rideau 1 diminue par rapport au diamètre de la roue d'entraînement 7, la vitesse de rotation du tambour 36 augmente par rapport à celle de la roue d'entraînement 7 jusqu'à la position de fermeture du rideau. Le dispositif peut être dimensionné pour que la butée 37 vienne en contact avec la butée 38 au moment où le rideau atteint sa position de fermeture. Il est, toutefois, possible de prévoir que même dans la position de fermeture, ces butées 37 et 38 ne se touchent pas. Dans cette forme de réalisation les dimensions du dispositif sont choisies d'une manière telle qu'aucun mou n'est formé dans le rideau 1 lors de la fermeture de ce dernier. Pendant cette fermeture, le tambour 36 tourne uniquement autour de son axe 6 par l'action de l'extrémité inférieure des organes de commande 11 sur les ergots prévus à cet effet au bord du rideau 1 opposé à celui du côté de l'arbre 2. Il n'y a pas de contact entre les butées 37 et 38 lors de ce déplacement vers la position de fermeture du rideau 1. Lors de l'ouverture du rideau 1 à partir de sa position de fermeture par la rotation de l'arbre 2 dans le sens inversé par rapport à celui pendant la fermeture, la butée 38 de la roue d'entraînement 7 s'appui contre la butée 37 du tambour 36, de sorte que ce dernier est actionné par la roue d'entraînement 7 et que le rideau 1 est enroulé autour du tambour 36. Etant donné que lors du commencement de l'ouverture du rideau 1, le diamètre de la partie enroulée du rideau 1 est inférieur au diamètre de la roue d'entraînement 7, l'organe de commande 11 est remonté plus vite que le rideau 1. Il est clair que lorsque la baie à fermer par le rideau est d'une très grande hauteur, du mou pourrait se former lors de la fermeture du rideau lorsque les butées 37 et 38 se touchent pendant cette fermeture. Dans un tel cas, l'importance de ce mou est néanmoins réduite par rapport aux autres formes de réalisation décrites ci-dessus. L'ensemble du tambour 36 et des butées 37 et 38 forme un compensateur ayant pour but de diminuer ou d'éviter la formation de mou lors du déplacement du rideau. Ce compensateur est de construction très simple et ne nécessite, par exemple, pas la présence de ressorts. Dans une forme de réalisation du dispositif à rideau où un compensateur est prévu, il est également possible de fixer l'extrémité inférieure de l'organe de commande, ou l'élément de contact 35, à l'ergot 17 d'une manière amovible. Ainsi, le bord du rideau 1 opposé à celui orienté vers l'arbre 2 est relié aux organes de commande pendant tout le cycle de fermeture ou d'ouverture et ceci jusqu'à ce que les bords latéraux 4 du rideau 1 se dégagent des glissières, par exemple, par l'action d'un véhicule qui se heurte contre le rideau 1. Dans un tel cas, l'extrémité inférieure 16 de l'organe de commande, ou l'élément de contact 35, est séparé automatiquement de l'ergot 17. De plus, l'extrémité libre 16 de la lance devant coopérer avec le rideau est de préférence biseautée comme d'ailleurs l'ergot 17, de manière à permettre de faciliter le dégagement du bord latéral 5 du rideau 1 des glissières sous l'action d'un obstacle, comme indiqué ci-dessus. Dans la deuxième forme de réalisation, on peut prévoir un embout biseauté à l'extrémité libre de la chaîne 1 1, de la même manière que l'extrémité de la lance. La figure 16 est relative à une cinquième forme de réalisation qui se caractérise par rapport à la première forme de réalisation représentée notamment dans la figure 2, par le fait que l'extrémité de bande 11, qui forme l'organe de commande, est fixée par son extrémité opposée à celle devant agir sur le rideau 1 sur l'arbre 2 et que cette bande 1 1 est enroulée ou déroulée entre les spires 14 du rouleau 15 du rideau 1. Ceci permet d'éviter l'utilisation d'un bac, comme dans la deuxième forme de réalisation, pour loger la partie de l'organe de commande, formé par une lanière ou une lance, au delà de la roue d'entraînement. Afin de pouvoir compenser la différence de diamètre entre la partie enroulée du rideau 1 et de la roue d'entraînement 7, l'on prévoit que la bande 11 ait une longueur suffisante pour permettre que la spire extérieure 12 de la partie enroulée de cette bande 1 1 forme une boucle de la même manière qu'un mou autour de l'arbre 2. La figure 17 concerne une forme de réalisation qui se distingue des formes de réalisation précédentes par le fait que l'organe de commande formée par une lanière incompressible 1 1, est enroulée d'une manière hélicoïdale sur une roue d'entraînement tronconique 7 dentée ou non, dont la forme est telle à ce que, aussi bien lors du déroulement que lors de l'enroulement, la vitesse de déplacement linéaire de la lanière corresponde à celle du rideau 1 entre sa position d'ouverture et sa position de fermeture. Lorsque cette roue 7 n'est pas dentée, on prévoit de préférence dans la surface extérieure de celle-ci des rainures, non représentées, qui s'étendent hélicoïdalement autour de l'axe 6 et dans lesquelles se déplace l'organe de commande 1 1. Un boîtier 47 est prévu autours de la roue d'entraînement 7 qui présente dans sa partie inférieure une fente3, is housed the lateral edge 4 of the curtain 1. The part of the latter adjacent to this side edge 4 extends through the slot 20. Thus, the curtain 1 can be moved in the longitudinal direction of the slides while each of the side edges 4 is guided in said first channel 18. The second channel 19 serves as a guide path of the control member 1 1 along the side edge 4 of the curtain. So that the lower end 16 of this control member 1 1 can rest on the lug 17 of the lower edge 8 of the curtain 1, a passage 21 is provided between said channels 18 and 19 extending over substantially the entire length of the latter to allow the lug 17 to enter the second channel 19 and thus cooperate with the control member 1 1. The fact that the lug 17 extends through said passage 21 into the channel 19 As a result, part of this lug is located below the lower end 16 of the control member 11. The dimensions of said second channel 19 substantially correspond to the dimensions of the control member 11, so that the latter can not bend or fold in this channel 19. In this way, the control member 1 1, which is substantially incompressible in its longitudinal direction can exert a thrust force on the lug 17 provided at the lower edge 8 of the curtain 1 through the driving wheel 7 and thus cause the curtain 1 to its closed position. The portion of the slides 5 delimiting the channel 19 is advantageously extended beyond the level of the axis 6 of the shaft 2, facing the drive wheel 7 so as to be able to guide the organ as far as possible. 11. This extension has been designated by the reference 5 'in the figures. The control member 11 is, for example, constituted by a phenylene-terephthalamide strip or spear, known under the trade name "Kevlar", provided with a tetrafluoroethylene coating, known under the trade name "Teflon", with a thickness of 2 mm and a width of 20 mm. This band has a succession of recesses 10 which cooperate with the teeth 9 provided on the drive wheel 7, as already described above. In the embodiment of the device according to the invention, shown in FIGS. 1 to 6, the strip, which forms the control member 11, extends in the slideways 5 substantially in the same plane as the curtain 1, as the result of Figure 6. The width of the passage 21 which leads to the channel 19, wherein is housed the control member 1 1 is less than the thickness of the latter, so that this body can not enter this passage 21. Since in the embodiment according to Figures 1 to 6, the control member 1 1 is formed of a narrow flexible band and rectangular cross section, it is also possible to provide that the channel 19 of rectangular section extends with its long side in a direction perpendicular to the plane of the curtain 1. In such a case, the control member undergoes a 90 ° twist in the space between the drive wheel 7 and the slide 5 Thus, the passage 21 could have a width which is greater than the thickness of the control member 11, but which is smaller than the width of the latter, as shown in FIG. a second embodiment of the curtain device according to the invention has been shown which differs essentially from the first embodiment described above by the fact that the control member is formed by a chain 11 meshing with a traditional toothed wheel 7 and a ballast 22 is provided at the lower edge 8 of the curtain 1 opposite the edge thereof which is fixed to the shaft 2. The chain 11 is formed by a succession of articulated jerseys to each other around axes p aralleles, as is for example the case of a bicycle chain. The pitch diameter C 0 of the toothed wheel is smaller than the diameter di of the roller 15, which is formed when the curtain 1 is in its open position, and greater than the diameter d 2 of the still-wound portion 15 of the curtain 1 when the latter is in the closed position. When closing the curtain 1, by the rotation of the shaft 2, from the open position, as shown in Figure 8, the curtain 1 is unrolled from this shaft 2 without slack is formed as a result The chain 11 also moves following the action of the toothed wheel 7 in the slide 5. The toothed wheel 7 is fixed coaxially on the shaft 2. This chain 11, which is not closed on itself, is discharged from a tray 25 which is installed below the shaft 2. As mentioned above, when the curtain 1 moves to its closed position, it does not there is normally no formation of slack around the shaft 2 following the tensile action exerted by the ballast 22 on the curtain 1. However, when under the action of the wind, which could exert a thrust force on the plane of the curtain 1 during the closure of the latter, the lateral edges 4 of the curtain 1 are braked in the slides 5, moves it Curtain 1 stops or is slowed down. At this moment, slack is formed around the shaft 2 and the lower end 16 of the chain 11, which continues to move in the slideway 5, approaches the lower edge 8 of the curtain 1 and drives the this. This is of course also the case for the first embodiment described above. A detail of the chain 1 1 and the lug 17 at the lower edge 8 of the curtain 1 is shown in Figure 1 1. This lug 17 is part of an L-shaped piece 26, one arm constitutes the lug 17 and extends parallel to the lower edge 8 of the curtain 1 in the corresponding slide 5, the other arm 27 extending parallel to the corresponding side edge 4 of the curtain 1. The part 26 is, in particular, made of two symmetrical metal plates 28 and 29 which are fixed on either side of the plane of the curtain 1, so that the latter is clamped between these two plates 28 and 29. The slide 5 has a section such as to guide the chain 1 1 in its longitudinal direction without it being able to disengage laterally with respect to it. The lateral edge 4 of the curtain is held in the slideway 5 between the bay 3 and the place where the chain 11 is guided, exactly as in the first embodiment. When a force above a certain value is exerted on the curtain 1 transversely to the plane of the latter, for example, by the action of a vehicle which collides against the curtain 1, the lateral edges 4 of this The last slides emerge 5. To this end, it is provided that the lateral edges 4 of the curtain 1 or the slides 5 can deform elastically. Since the chain 1 1 is not fixed to the curtain 1, the lug 17 easily emerges from the chain 11. In FIG. 14 is shown a third embodiment of the curtain device, according to the invention, which differs essentially from the two previous embodiments in that the control member is formed by a belt 33 which is closed on itself. This belt 33 is guided and driven by the drive wheels 7 fixed on the shaft 2. These drive wheels can, in this case, be formed by pulleys. In the lower part of the bay 3, this belt 33 cooperates with a wheel 34, which is preferably mounted in an elastic manner, for example by means of helical springs 40, with respect to the ground so as to keep it constantly in a state tense. A contact element 35, formed, for example, by a projection or hook, is fixed on the belt 33 between this lower edge 8 and the shaft 2. During the unwinding of the curtain 1 by the rotation of the shaft 2, the successive turns 14 of the roll 15 enlarge and form slack as in the first embodiment. Simultaneously, the belt 33 is moved following the action of the drive wheel 7 and the contact element 35 approaches the lower edge 8. When the contact element 35 touches the lug 17 of the lower edge 8, it exerts a force on the lower edge 8 to move the curtain 1 to its closed position. As this contact member 35 moves, the turns of the curtain 1 unfurl and the slack decreases. In fact, this contact element 35 fulfills the same function as the free end 16 of the control member of the first and second embodiments. When opening the curtain from its closed position, the shaft 2 rotates in the opposite direction to that of the closure, so that the curtain is wound without slack on the shaft 2. Since the diameter of the drive wheel 7 is at this moment greater than the diameter of the wound portion of the curtain 1, the contact element 35 moves away from the lower edge 8 of the curtain until these diameters are substantially equal. During the winding of the remaining part of the curtain 1, its lower edge 8 approaches gradually to a small distance from the contact element 35, at the moment when the curtain is in the open position. FIG. 15 relates to a fourth embodiment which is characterized with respect to the previous embodiments in that the curtain 1 is wound around a drum 36 which is coaxial with the shaft 2 and which is freely mounted on the latter . The lateral face of this drum 36, directed towards the drive wheel 7, is provided with a stop 37 which cooperates with a stop 38 which is present on the side of the drive wheel 7 facing the drum 36. two stops 37 and 38 are mounted at the same distance from the axis 6 of the shaft 2. In a first step, during the rotation of the shaft 2 and the drive wheel 7 to move the curtain 1 to its closed position, the control members, not shown in Figure 15, move towards the edge of the curtain 1 opposite to that mounted on the drum 36 while the latter remains substantially immobile. At the moment when these members act on this edge, the curtain 1 is at the same linear speed as the control member. As a result, the drum 36 rotates at a lower angular velocity than the drive wheel 7 since the diameter of the curled portion of the curtain is greater than the diameter of the drive wheel 7. As soon as the diameter the curled portion of the curtain 1 has become substantially equal to the diameter of the drive wheel 7, the drum rotates at the same angular speed as the drive wheel. As the diameter of the curled portion of the curtain 1 decreases relative to the diameter of the drive wheel 7, the The rotational speed of the drum 36 increases relative to that of the drive wheel 7 to the closed position of the curtain. The device may be dimensioned so that the stop 37 comes into contact with the stop 38 at the moment when the curtain reaches its closed position. It is, however, possible to provide that even in the closed position, these stops 37 and 38 do not touch. In this embodiment the dimensions of the device are chosen in such a way that no slack is formed in the curtain 1 during the closure of the latter. During this closure, the drum 36 rotates only about its axis 6 by the action of the lower end of the control members 11 on the lugs provided for this purpose at the edge of the curtain 1 opposite that of the side of the shaft 2 There is no contact between the stops 37 and 38 during this movement towards the closed position of the curtain 1. When opening the curtain 1 from its closed position by the rotation of the shaft 2 in the opposite direction to that during closing, the stop 38 of the drive wheel 7 bears against the stop 37 of the drum 36, so that the latter is actuated by the drive wheel 7 and that the curtain 1 is wrapped around the drum 36. Since at the beginning of the opening of the curtain 1, the diameter of the curled portion of the curtain 1 is smaller than the diameter of the drive wheel 7, the control member 11 is back up faster than the curtain 1. It is clear that when the bay to close by the curtain is of a great height, slack could be formed when closing the curtain when the stops 37 and 38 touch during this closure. In such a case, the importance of this slack is nevertheless reduced compared to the other embodiments described above. The assembly of the drum 36 and stops 37 and 38 forms a compensator whose purpose is to reduce or avoid the formation of slack when moving the curtain. This compensator is of very simple construction and does not require, for example, the presence of springs. In one embodiment of the curtain device where a compensator is provided, it is also possible to fix the lower end of the control member, or the contact element 35, to the lug 17 in a removable manner. . Thus, the edge of the curtain 1 opposite the one facing the shaft 2 is connected to the control members during the entire closing or opening cycle and this until the lateral edges 4 of the curtain 1 emerge slides for example, by the action of a vehicle against the curtain 1. In such a case, the lower end 16 of the control member, or the contact element 35, is automatically separated from the lug 17. In addition, the free end 16 of the lance to cooperate with the curtain is preferably beveled as also the lug 17, so as to facilitate the clearance of the side edge 5 of the curtain 1 of the slides under the action of an obstacle, as indicated above . In the second embodiment, a beveled tip may be provided at the free end of the chain January 1, in the same manner as the end of the lance. FIG. 16 relates to a fifth embodiment which is characterized with respect to the first embodiment represented in particular in FIG. 2, in that the end of strip 11, which forms the control member, is fixed by its opposite end to that to act on the curtain 1 on the shaft 2 and that the band 1 1 is wound or unwound between the turns 14 of the roll 15 of the curtain 1. This avoids the use of a tray , as in the second embodiment, for housing the portion of the control member, formed by a strap or a lance, beyond the drive wheel. In order to be able to compensate for the difference in diameter between the wound portion of the curtain 1 and the drive wheel 7, it is expected that the band 11 has a length sufficient to allow the outer turn 12 of the wound portion of this band 1 1 forms a loop in the same way as a slack around the shaft 2. FIG. 17 relates to an embodiment which differs from the preceding embodiments in that the control member formed by an incompressible lanyard 1 1, is helically wound on a frustoconical drive wheel 7 toothed or not, whose shape is such that, both during unwinding and during winding, the linear speed of movement of the strap corresponds to that of the curtain 1 between its open position and its closed position. When this wheel 7 is not toothed, it is preferably provided in the outer surface thereof grooves, not shown, which extend helically around the axis 6 and in which the control member 1 moves 1. A housing 47 is provided around the drive wheel 7 which has in its lower part a slot
48 qui s'étend dans un plan passant par l'axe 6 de l'arbre 2 et parallèle à la direction de déplacement du rideau 1 entre sa position d'ouverture et sa position de fermeture à travers de laquelle l'organe de commande 1 1 peut être enroulé sur ou se dérouler de la roue d'entraînement 7. Dans d'autres cas, par exemple pour le recouvrement de piscine, de vérandas, etc., si, au contraire, il y a lieu d'éviter que les bords latéraux du rideau sortent des glissières, celles-ci sont réalisées en une matière rigide ou sont rendues rigides. Par ailleurs, les ergots sont fixés au bord du rideau opposé à celui du côté de l'arbre sur lequel le rideau est monté et sont maintenus à coulissement dans les glissières. Ceci n'est donc possible que pour les formes de réalisation où l'organe de commande est constamment en contact avec l'ergot lors du déplacement du rideau. Les figures 18 à 20 montrent une forme de réalisation dans laquelle le rideau se déplace horizontalement entre une position d'ouverture et une position de fermeture. Le bord 8 du rideau 1 opposé à celui du côté de l'arbre 2 est formé par une barre rigide dont les extrémités forment les ergots qui s'engagent à coulissement dans les glissières 5, de sorte que les ergots ne peuvent pas se dégager de ces dernières. Pour permettre de tendre le rideau 1 dans sa position de fermeture, une surépaisseur 41, de préférence rigide, s'étend sur toute la largeur de la face extérieure du rideau 1, parallèlement à l'axe de l'arbre 2 et prend appui dans la position de fermeture du rideau 1 contre une barre transversale rigide 42 s'étendant également parallèlement à l'axe de l'arbre 2. Cette barre 42 est montée sur les parties fixes du dispositif, comme les glissières 5. Il faut donc que la distance parcourue par le rideau à partir de la barre 42 jusqu'à dans sa position de fermeture corresponde à la distance entre la surépaisseur 41 et le bord 8 du rideau 1. A cet égard, aussi bien la position de la barre 42 que celle de la surépaisseur 41 pourrait être réglable. Ceci permet que du mou, qui serait éventuellement présent, reste dans la partie du rideau 1 en amont de cette surépaisseur 41. Cette solution est surtout importante pour les dispositifs ne comprenant pas de glissières pour les bords latéraux du rideau 1 ou pour lesquels il n'est pas possible de prévoir un lestage au bord inférieur du rideau opposé à celui du côté de l'arbre 2. Ceci est par exemple le cas lorsque le rideau, dont les bords latéraux ne sont pas guidés, se déplace horizontalement, comme dans les figures 18 à 20. La figure 21 concerne une particularité pouvant être adaptée sur pratiquement toutes les formes de réalisation décrites ci-dessus, mais qui est surtout utile pour des rideaux relativement longs et/ou qui se déplacent avec un frottement relativement important dans des glissières. Ceci pourrait être le cas dans la forme de réalisation montrée aux figures 18 à 20. Cette particularité consiste à prévoir dans les glissières 5, par exemple à proximité de la roue d'entraînement, entre la position d'ouverture et de fermeture du rideau, une ouverture 43 dans laquelle l'organe de commande 11 peut pénétrer lors de son déplacement dans la glissière 5 au moment où une obstruction se produit dans la glissière en aval de cette ouverture 43 en considérant le sens de déplacement de l'organe de commande 11. Dans un tel cas, la partie 1 1 ' de l'organe de commande 11 traversant cette ouverture 43 agit sur un détecteur 44 qui envoie alors un signal à un poste de contrôle non représenté. Ce poste de contrôle pourrait éventuellement mettre un mécanisme en action pour remédier au problème ainsi créé. Dans les formes de réalisation précédentes, l'organe de commande et les bords latéraux du rideau se déplacent dans une même glissière. Il est, toutefois possible de prévoir une glissière, ou d'autres moyens séparés, pour guider l'organe de commande qui est entièrement indépendante des glissières pour les bords latéraux du rideau et qui permet, par exemple, de déplacer l'organe de commande sur un parcours rectiligne à partir de la roue d'entraînement ou vers cette dernière. Dans les dispositifs à rideau, suivant l'invention, décrits ci-dessus, une roue d'entraînement 7 qui est fixée sur l'arbre 2, est prévue de chaque côté du rideau.48 which extends in a plane passing through the axis 6 of the shaft 2 and parallel to the direction of movement of the curtain 1 between its open position and its closed position through which the control member 11 can be wound on or unwind from the drive wheel 7. In other cases, for example to pool coverings, verandas, etc., if, on the contrary, it is necessary to prevent the lateral edges of the curtain from coming out of the slideways, these are made of a rigid material or are made rigid. Furthermore, the lugs are attached to the edge of the curtain opposite to that of the side of the shaft on which the curtain is mounted and are held slidably in the slideways. This is therefore only possible for the embodiments where the control member is constantly in contact with the lug when moving the curtain. Figures 18 to 20 show an embodiment in which the curtain moves horizontally between an open position and a closed position. The edge 8 of the curtain 1 opposite the one on the side of the shaft 2 is formed by a rigid bar whose ends form the lugs which engage in sliding in the slides 5, so that the lugs can not disengage from these last. To make it possible to tension the curtain 1 in its closed position, an extra thickness 41, preferably rigid, extends over the entire width of the outer face of the curtain 1, parallel to the axis of the shaft 2 and bears in the closed position of the curtain 1 against a rigid transverse bar 42 also extending parallel to the axis of the shaft 2. This bar 42 is mounted on the fixed parts of the device, as the slides 5. It is therefore necessary that the distance traveled by the curtain from the bar 42 to its closed position corresponds to the distance between the extra thickness 41 and the edge 8 of the curtain 1. In this respect, both the position of the bar 42 than that of the extra thickness 41 could be adjustable. This allows slack, which would possibly be present, to remain in the part of the curtain 1 upstream of this excess thickness 41. This solution is especially important for devices that do not include slides for the lateral edges of the curtain 1 or for which it It is not possible to provide a ballast at the lower edge of the curtain opposite to that of the side of the shaft 2. This is for example the case when the curtain, whose lateral edges are not guided, moves horizontally, as in the FIGS. 18 to 20. FIG. 21 relates to a feature that can be adapted to virtually all the embodiments described above, but which is especially useful for relatively long curtains and / or which move with a relatively high friction in slides. This could be the case in the embodiment shown in Figures 18 to 20. This feature consists in providing in the slides 5, for example near the drive wheel, between the open position and closing the curtain, an opening 43 in which the control member 11 can penetrate during its displacement in the slideway 5 at the moment when an obstruction occurs in the slideway downstream of this opening 43 by considering the direction of movement of the control member 11 In such a case, the part 1 1 'of the control member 11 passing through this opening 43 acts on a detector 44 which then sends a signal to a control station not shown. This checkpoint could possibly put a mechanism in action to remedy the problem thus created. In the previous embodiments, the control member and the lateral edges of the curtain move in the same slide. It is possible, however, to provide a slide, or other separate means, to guide the control member which is completely independent of the slides for the lateral edges of the curtain and which allows, for example, to move the control member on a straight path from or to the drive wheel. In the curtain devices according to the invention described above, a drive wheel 7 which is fixed on the shaft 2 is provided on each side of the curtain.
Ainsi, le mouvement des organes de commande correspondants est entièrement synchronisé. Le rideau 1 est, de préférence, constitué d'un matériau qui permet que les spires successives du rideau enroulé glissent les unes par rapport aux autres, de sorte que le rideau est, par exemple, constitué d'un matériau lisse et continu, comme par exemple une bâche en une matière plastique, éventuellement polie. Lorsque l'organe de commande est formé par une lance ou un lanière incompressible qui n'est pas fermée sur elle-même, comme dans les formes de réalisation décrites ci-dessus, exceptée la troisième forme de réalisation, cet organe de commande n'agit que sur le rideau pour le déplacer vers sa position de fermeture, l'ouverture étant réalisée par la rotation de l'arbre 2 autour de son axe 6 dans le sens opposé à celui lors de la fermeture. Il est également à conseiller de choisir la longueur du rideau quelque peu plus élevée que la hauteur de la baie, de sorte qu'également dans la position de fermeture un léger mou est présent autour de l'arbre 2. Ceci permet de compenser des variations dans les dimensions du dispositif et de la baie, ainsi que de tenir compte de variations de température qui pourraient avoir un effet sur la longueur du rideau. Enfin, dans certains cas, l'ergot prévu au bord du rideau opposé à celui du côté de l'arbre peut être escamotable, par exemple au moyen d'un levier, pour permettre une installation et un montage plus aisé du dispositif et aussi une réintroduction plus facile de cet ergot dans les glissières suite à un dégagement du rideau de ces dernières, surtout lorsque le bord du rideau opposé à celui du côté de l'arbre 2 présente une barre rigide, comme dans la septième forme de réalisation. Quoique les dispositifs à rideau décrits ci-dessus soient pourvus de glissières, il est clair que la présence de ces glissières n'est pas essentielle pour l'invention. Il est bien entendu que l'invention n'est pas limitée aux différentes formes de réalisation décrites ci-dessus, mais que d'autres variantes encore peuvent être envisagées sans sortir du cadre de la présente invention. Pour des dispositifs de dimensions réduites, le rideau et les roues d'entraînement pourraient être actionnés manuellement, par exemple, au moyen d'un levier monté sur l'arbre d'enroulement du rideau. Dans certains cas, si le rideau est réalisé en une matière suffisamment lourde, le lestage peut être omis. Dans la septième forme de réalisation, la barre rigide du bord 8 peut être remplacée par deux plots à chacune des extrémités de ce bord qui s'engagent dans les glissières. Par ailleurs, dans chacun des formes de réalisation décrites ci-dessus, des moyens sont avantageusement prévus permettant d'enrouler au maximum une spire de l'organe de commande autour de la roue d'entraînement parallèlement à un plan perpendiculaire à l'axe de l'arbre 2, de sorte que le diamètre primitif de la roue d'entraînement reste sensiblement constant. De cette façon, l'organe de commande se déplacera toujours à la même vitesse lors de la fermeture et l'ouverture du rideau. Les moyens précités sont ceux qui permettent d'éviter l'enroulement de l'organe de commande sur lui-même autour de la roue d'entraînement. Thus, the movement of the corresponding control members is fully synchronized. The curtain 1 is preferably made of a material which allows the successive turns of the rolled curtain to slide relative to each other, so that the curtain is, for example, made of a smooth and continuous material, such as for example a tarpaulin made of a plastic material, possibly polished. When the control member is formed by a lance or an incompressible lanyard which is not closed on itself, as in the embodiments described above, except the third embodiment, this control member n ' It acts only on the curtain to move it towards its closed position, the opening being achieved by the rotation of the shaft 2 about its axis 6 in the opposite direction to that during the closing. It is also advisable to choose the length of the curtain somewhat higher than the height of the bay, so that also in the closed position a slight softness is present around the shaft 2. This makes it possible to compensate for variations in the dimensions of the device and the bay, as well as to take into account temperature variations that could have an effect on the length of the curtain. Finally, in some cases, the lug provided at the edge of the curtain opposite the side of the shaft can be retractable, for example by means of a lever, to allow easier installation and assembly of the device and also a easier reintroduction of this lug in the slides following a clearance of the curtain thereof, especially when the edge of the curtain opposite that of the side of the shaft 2 has a rigid bar, as in the seventh embodiment. Although the curtain devices described above are provided with slides, it is clear that the presence of these slides is not essential for the invention. It is understood that the invention is not limited to the various embodiments described above, but that other variants may be considered without departing from the scope of the present invention. For devices of reduced dimensions, the curtain and the drive wheels could be operated manually, for example by means of a lever mounted on the winding shaft of the curtain. In some cases, if the curtain is made of a sufficiently heavy material, the ballasting may be omitted. In the seventh embodiment, the rigid bar of the edge 8 can be replaced by two studs at each end of this edge which engage in the slideways. Furthermore, in each of the embodiments described above, means are advantageously provided for winding a maximum of one turn of the control member around the drive wheel parallel to a plane perpendicular to the axis of the shaft 2, so that the pitch diameter of the drive wheel remains substantially constant. In this way, the control member will always move at the same speed when closing and opening the curtain. The aforementioned means are those that prevent the winding of the control member on itself around the drive wheel.

Claims

REVENDICATIONS
1. Dispositif à rideau monté sur un arbre (2) autour duquel ce rideau (1) peut être enroulé vers une position d'ouverture et dont il peut se dérouler vers une position de fermeture, une roue d'entraînement (7) étant fixée coaxialement sur cet arbre (2) et coopérant avec le rideau (1) d'une manière telle à pouvoir déplacer ce dernier entre ces deux positions, caractérisé en ce qu'il comprend un organe de commande oblong flexible (11) qui coopère avec la roue d'entraînement (7), cet organe (11) étant monté librement par rapport au rideau de manière à permettre, d'une part, de déplacer le rideau (1) entre sa position d'ouverture et sa position de fermeture indépendamment du mou qui se serait éventuellement formé dans le rideau (1) et, d'autre part, à pouvoir se déplacer le long d'au moins un des bords latéraux (4) du rideau ( 1 ) et agir sur la zone (8) de ce dernier opposée à celle montée sur l'arbre (2). 1. Curtain device mounted on a shaft (2) around which this curtain (1) can be wound to an open position and which can be unrolled to a closed position, a drive wheel (7) being fixed coaxially on this shaft (2) and cooperating with the curtain (1) in such a way as to be able to move the latter between these two positions, characterized in that it comprises a flexible oblong control member (11) which cooperates with the driving wheel (7), this member (11) being mounted freely relative to the curtain so as to allow, on the one hand, to move the curtain (1) between its open position and its closed position independently of the soft which would have possibly formed in the curtain (1) and, secondly, to be able to move along at least one of the lateral edges (4) of the curtain (1) and act on the area (8) of the latter opposite to that mounted on the shaft (2).
2. Dispositif suivant la revendication 1, caractérisé en ce que le diamètre primitif de la roue d'entraînement (7) est, d'une part, inférieur au diamètre de la partie enroulée du rideau (1) dans sa position d'ouverture et, d'autre part, supérieur au diamètre de l'arbre (2) précité ou de la partie enroulée du rideau (1) dans sa position de fermeture. 2. Device according to claim 1, characterized in that the pitch diameter of the drive wheel (7) is, on the one hand, smaller than the diameter of the wound portion of the curtain (1) in its open position and on the other hand, greater than the diameter of the above-mentioned shaft (2) or the wound part of the curtain (1) in its closed position.
3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que le diamètre primitif de la roue d'entraînement (7) est égal ou supérieur à la moitié de la somme du diamètre de la partie enroulée du rideau (1) dans sa position d'ouverture et du diamètre de l'arbre (2) précité ou de la partie enroulée du rideau (1) dans sa position de fermeture. 3. Device according to claim 1 or 2, characterized in that the pitch diameter of the drive wheel (7) is equal to or greater than half the sum of the diameter of the wound portion of the curtain (1) in its position. opening and the diameter of the above-mentioned shaft (2) or the wound part of the curtain (1) in its closed position.
4. Dispositif suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que des moyens sont prévus permettant d'enrouler au maximum une spire de l'organe de commande (1 1) autour de la roue d'entraînement (7) parallèlement à un plan perpendiculaire à l'axe (6) de l'arbre (2). 4. Device according to any one of claims 1 to 3, characterized in that means are provided for winding a maximum of one turn of the control member (1 1) around the drive wheel (7). parallel to a plane perpendicular to the axis (6) of the shaft (2).
5. Dispositif suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que l'organe de commande (1 1) est sensiblement incompressible dans le sens de sa longueur. 5. Device according to any one of claims 1 to 4, characterized in that the control member (1 1) is substantially incompressible in the direction of its length.
6. Dispositif suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que l'organe précité (1 1) est tel à pouvoir exercer une force de poussée sur le rideau (1) pour l'amener dans sa position de fermeture. 6. Device according to any one of claims 1 to 5, characterized in that the aforementioned member (1 1) is such to be able to exert a thrust force on the curtain (1) to bring it into its closed position .
7. Dispositif suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que l'organe de commande précité (1 1) comprend un élément incompressible dans le sens de sa longueur. 7. Device according to any one of claims 1 to 6, characterized in that the aforesaid control member (1 1) comprises an incompressible element in the direction of its length.
8. Dispositif suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que la roue d'entraînement (7) présente une succession de saillies ou creux8. Device according to any one of claims 1 to 7, characterized in that the drive wheel (7) has a succession of protrusions or recesses
(9) coopérant avec l'organe de commande (1 1) et s'étendant à une distance constante l'un par rapport à l'autre suivant le pourtour d'un cercle dont le centre se situe sur l'axe (6) de la roue (7) susdite. (9) cooperating with the control member (1 1) and extending at a constant distance from each other around the circumference of a circle whose center is on the axis (6) wheel (7) aforesaid.
9. Dispositif suivant la revendication 8, caractérisé en ce que l'organe de commande (11) comprend un ruban ou une chaîne sans fin. 9. Device according to claim 8, characterized in that the control member (11) comprises an endless ribbon or chain.
10. Dispositif suivant l'une quelconque des revendications 1 à 9, caractérisé en ce que des moyens sont prévus au rideau (1) permettant d'éviter la formation de mou dans ce dernier lors de son déroulement. 10. Device according to any one of claims 1 to 9, characterized in that means are provided in the curtain (1) to prevent the formation of slack in the latter during its course.
1 1. Dispositif suivant la revendication 10, caractérisé en ce que ces moyens comprennent un lestage (22) au bord du rideau (1) opposé à celui monté sur l'arbre précité (2). 1 1. Device according to claim 10, characterized in that these means comprise a ballast (22) at the edge of the curtain (1) opposite to that mounted on the aforementioned shaft (2).
12. Dispositif suivant l'une quelconque des revendications 1 à 11, caractérisé en ce que la roue d'entraînement est fixée coaxialement sur l'arbre (2) d'une manière telle à pouvoir se déplacer à une même vitesse angulaire que cet arbre (2). 12. Device according to any one of claims 1 to 11, characterized in that the drive wheel is fixed coaxially on the shaft (2) in such a way as to be able to move at the same angular speed as this shaft (2).
13. Dispositif suivant l'une quelconque des revendications 1 à 12, caractérisé en ce qu'il comprend des glissières (5) dans lesquelles les bords latéraux (4) du rideau (1) et l'organe de commande (11) peuvent se déplacer parallèlement l'un à l'autre. 13. Apparatus according to any one of claims 1 to 12, characterized in that it comprises slides (5) in which the side edges (4) of the curtain (1) and the control member (11) can be move parallel to each other.
14. Dispositif suivant l'une quelconque des revendications 1 à 13, caractérisé en ce que la roue d'entraînement (7) est telle que l'organe de commande (1 1) peut être enroulé hélicoïdalement sur celle-ci autour de son axe de rotation. 14. Device according to any one of claims 1 to 13, characterized in that the drive wheel (7) is such that the control member (1 1) can be wound helically over it around its axis. of rotation.
15. Dispositif suivant la revendication 14, caractérisé en ce que la roue d'entraînement (7) présente une forme tronconique qui est telle que, aussi bien lors du déroulement que lors de l'enroulement de l'organe de commande, la vitesse linéaire de cette dernière corresponde sensiblement à celle du rideau (1) se déplaçant entre sa position d'ouverture et sa position de fermeture. 15. Apparatus according to claim 14, characterized in that the drive wheel (7) has a frustoconical shape which is such that, both during the unwinding and during the winding of the control member, the linear speed the latter corresponds substantially to that of the curtain (1) moving between its open position and its closed position.
16. Dispositif suivant l'une quelconque des revendications 1 à 15, caractérisé en ce qu'un compensateur est monté sur l'arbre (2) précité permettant d'adapter le déplacement périphérique de la partie enroulée du rideau (1) au déplacement de déplacement de l'organe de commande (1 1). 16. Device according to any one of claims 1 to 15, characterized in that a compensator is mounted on the shaft (2) above to adapt the peripheral movement of the wound portion of the curtain (1) to the displacement displacement of the control member (1 1).
EP05708933.6A 2004-03-17 2005-03-03 Roller curtain device Active EP1730365B1 (en)

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BE2004/0146A BE1016320A3 (en) 2004-03-17 2004-03-17 CURTAIN DEVICE unwound.
PCT/IB2005/050798 WO2005090704A2 (en) 2004-03-17 2005-03-03 Roller curtain device

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JP (1) JP4867049B2 (en)
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AR048265A1 (en) 2006-04-12
NO336758B1 (en) 2015-10-26
PL1730365T3 (en) 2014-03-31
JP4867049B2 (en) 2012-02-01
NO20064685L (en) 2006-12-14
CA2559592C (en) 2013-08-06
WO2005090704A2 (en) 2005-09-29
WO2005090704A3 (en) 2007-08-23
BE1016320A3 (en) 2006-08-01
HK1118087A1 (en) 2009-01-30
EP1730365B1 (en) 2013-10-16
PT1730365E (en) 2013-12-16
DK1730365T3 (en) 2014-01-27
CN100510292C (en) 2009-07-08
CN101124373A (en) 2008-02-13
TW200537005A (en) 2005-11-16
ES2437890T3 (en) 2014-01-14
JP2007529656A (en) 2007-10-25
US7581578B2 (en) 2009-09-01
CA2559592A1 (en) 2005-09-29
TWI350339B (en) 2011-10-11
US20080264582A1 (en) 2008-10-30

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