EP2007956B1 - Systeme de couverture - Google Patents

Systeme de couverture Download PDF

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Publication number
EP2007956B1
EP2007956B1 EP07732231.1A EP07732231A EP2007956B1 EP 2007956 B1 EP2007956 B1 EP 2007956B1 EP 07732231 A EP07732231 A EP 07732231A EP 2007956 B1 EP2007956 B1 EP 2007956B1
Authority
EP
European Patent Office
Prior art keywords
screen
rotatable member
longitudinal flexible
flexible element
covering apparatus
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.)
Not-in-force
Application number
EP07732231.1A
Other languages
German (de)
English (en)
Other versions
EP2007956A2 (fr
Inventor
Dvir Brand
Daniel Cutler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PL07732231T priority Critical patent/PL2007956T3/pl
Publication of EP2007956A2 publication Critical patent/EP2007956A2/fr
Application granted granted Critical
Publication of EP2007956B1 publication Critical patent/EP2007956B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E04F10/0607—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 guiding-sections for supporting the movable end of the blind
    • 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
    • E04F10/0655—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 acting on the movable end, e.g. front bar
    • 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
    • E04F10/0666—Accessories
    • E04F10/0681—Support posts for the movable end of the blind

Definitions

  • the longitudinal flexible element may be wound, or partially wound around several rollers in order to provide the desired level of friction.
  • the longitudinal flexible element is wound around the first and second rotatable members in a figure-of-eight pattern.
  • the longitudinal flexible element is wound around the two rotatable members in opposite senses, e.g. clockwise around the first rotatable member and anti-clockwise around the second rotatable member.
  • this arrangement causes the rotatable members to rotate in opposite senses as they roll along the longitudinal flexible element. Therefore the rotatable members may be meshed together or frictionally engaged together so that one rotatable member drives the other. With this arrangement, the braking system can be applied to only one of the rotatable members, but still prevent both rotatable members from rotating.
  • the longitudinal flexible element passes between the first and second rotatable members, then round the second rotatable member, then between the first and second rotatable members again, then round the first rotatable member in the opposite sense to the wind around the second rotatable member, then between the first and second rotatable members a third time, before continuing in its original direction.
  • one rotatable member is situated on (and, in use, rolls with respect to) each side of the longitudinal flexible element. This provides a better balanced and more compact and stable mechanism.
  • the apparatus further comprises a motor for rotatably driving at least one rotatable member.
  • the screen can be deployed or retracted remotely or automatically. This is particularly useful for large heavy screens or for covering systems which are awkward to reach.
  • the means for preventing rotation is applied to or associated with the motor. Thus by preventing rotation of the motor, the screen is prevented from further extending or retracting.
  • the covering apparatus may further comprise gearing between the motor and the at least one rotatable member.
  • Motors tend to rotate at high speeds, whereas the screen will need to be deployed somewhat slower. Also, the large heavy screens will need the extra power provided by gearing down the motor.
  • the gearing comprises a worm gear.
  • the worm gear is particularly beneficial in that it provides a simple arrangement with a high ratio of gearing down. It is also particularly suitable for driving two rotatable members by placing the rotatable members on opposite sides of the worm gear. The worm gear will cause the two rotatable members to rotate in opposite senses.
  • the means for preventing rotation may comprise the gearing.
  • reversing the system means that a small movement of the screen can only occur by inducing many rotations of the motor which incurs significant resistance.
  • a "braking" system is effected. This is particularly advantageous where an additional brake is applied to the motor. The braking force of that brake will only be overcome by a much greater force applied to the screen downstream of the gearing.
  • the system is particularly advantageous when a worm gear is included in the gearing because a worm gear is a one way drive mechanism. No rotational force on the rotatable members can cause the worm gear to operate in reverse. Therefore no further braking system will be required.
  • each rotatable member has a toothed portion for driving the rotatable member.
  • the rotatable members can engage with each other, or with a worm gear so that they rotate in opposite senses or they can engage with a third central drive gear so that they rotate in the same sense.
  • the covering apparatus preferably comprises a plurality of longitudinal flexible elements and has a roller system provided on each longitudinal flexible element (or at least a plurality of them). Providing a plurality of longitudinal flexible elements with roller systems increases the stability of the covering apparatus and increases the amount of friction force and braking force that can be applied to provide tension in the screen.
  • the apparatus may be further provided with an automatic retraction system.
  • the tension sensor may directly sense the tension in the screen or it may determine the tension in the screen by sensing the tension in a support of the screen. In this latter arrangement, the tension sensor is preferably calibrated each time the screen is deployed or retracted.
  • a preferred embodiment of the covering system of the invention provides a plurality of rollers around which the screen is wrapped when retracted.
  • two storage rollers are provided which are driven synchronously so as to wind the screen around them in such a way as to provide a generally oval cross-section.
  • the rollers may be driven by a third driving roller, smaller in diameter than the storage rollers and located between them in driving contact with both rollers.
  • the storage rollers may be synchronously driven by a drive belt or chain.
  • a flexible base member may be provided around the storage rollers and driven by the storage rollers.
  • the sheet is attached to the flexible base member.
  • the sheet may be wound around the storage rollers and attached to itself so as to form a closed loop around the rollers at the trailing end thereof.
  • the flexible base member or the loop of fabric formed at the trailing end of the sheet must have sufficient frictional engagement with the storage rollers that when at least one of the storage rollers is driven, the sheet or the base member is also driven and the sheet is retracted around the storage rollers.
  • the friction between the storage rollers and the sheet or base member is increased by providing a spring or springs which bias the storage rollers apart. Friction can also be increased by giving the rollers a rough or sticky surface, e.g. by providing rubber strips on the rollers.
  • the apparatus can also be applied to other applications beyond the field of covering systems.
  • the screen can be replaced with other objects that need to be releasably engaged with a longitudinal flexible element.
  • Figures 1 and 2 show a covering apparatus 1 comprising a storage roller 2 at the trailing end of a screen 3. Any portion of the screen which is not deployed is rolled up on the storage roller 2.
  • the storage roller 2 is motorized so that when tension is required in the screen, the storage roller 2 is driven in the direction of retracting the screen until sufficient tension has been applied.
  • Two cables (longitudinal flexible elements) 4 are provided (partially shown in Figures 1 and 2 ) which support the screen 3 when it is deployed.
  • the cables 4 are under high tension so as to support the screen 3 without allowing it to sag too much under its own weight.
  • these cables are attached to supports at either end.
  • the wall of a house could provide a first support and a second support could be formed by a pole fixed in the ground and anchored with guy ropes. These supports must be capable of maintaining tension in the cables 4.
  • a transverse bar 5 is attached at the leading end of the screen 3 (shown in more detail in Figure 2 ).
  • the transverse bar 5 provides support so as to prevent transverse sag of the screen.
  • the screen 5 is attached to roller systems 6 (one on each of the cables 4).
  • roller systems 6 one on each of the cables 4.
  • the nearest roller system 6 is shown without a case and the furthest roller system 6 is shown in a case 10.
  • the two roller systems 6 are identical and therefore only one will be described here.
  • the two rollers 7 are driven in opposite senses by the worm gear 8 when the motor 9 is driven. As the rollers 7 rotate, one of the rollers 7 (which roller depends on the direction of travel) winds cable 4 up around itself, while the other roller 7 pays out the same amount of cable (as the rollers 7 are the same size and are driven at the same speed). In this manner the rollers 7 and hence the transverse bar 5 and the screen 3 move longitudinally along the longitudinal flexible elements (cables) 4.
  • roller system grips the cable 4 securely and holds the screen in place against the tension force provided by the storage roller 2 being driven backwards.
  • Figures 7 and 8 show second and third embodiments of the invention.
  • the second embodiment shown in Figure 7 has a similar drive mechanism as described above in relation to the first embodiment, but housed inside a case 210 attached to a transverse bar 205.
  • Two rollers (not shown) are housed inside the case 210 and the cable 204 passes into the case 210 at one end, round the rollers in a figure-of-eight pattern and out of the case 210 at the opposite end.
  • One of the rollers is driven by a motor 209 to move the screen along the cable 204.
  • the third embodiment shown in Figure 8 has a similar drive mechanism to the first and second embodiments, but with the rollers lying in a plane perpendicular to those of the first and second embodiments and substantially parallel with the screen.
  • the cable 304 passes into and out of the case 310 at either end.
  • the case 310 is attached to a transverse bar 305.
  • the rollers are fixed (e.g. to a support) and the longitudinal flexible elements are movable relative to the rollers.
  • the longitudinal flexible elements are formed as continuous loops, extending round pulleys at the front and back of the canopy system.
  • the longitudinal flexible elements are moved past the rollers and the loops rotate around the pulleys.
  • the screen is attached to the longitudinal flexible elements so that as the loops are rotated, the screen is extended or retracted.
  • the same rollers and braking and gearing systems apply to this embodiment as they do to the other embodiments.
  • Figures 20 and 21 show an embodiment of the invention in which the screen 401 can be extended or retracted electrically.
  • the rollers in the roller cases 413, 414 are electrically powered so as to extend or retract the screen 401. Any clamping mechanism can also be electrically actuated.
  • an electrical wire 437 runs diagonally from one corner at the trailing edge of the screen 401 to the diagonally opposite corner at the leading edge 402 of the screen 401.
  • the wire 437 is distributed evenly across the width of the screen roll and the diameter of the roll is uniform and minimised. In this way, power can be transmitted from an external power supply, through the wire 437 to the roller case 413. Power can then be transferred to the other roller case 414 by running another wire (not shown) along the transverse rod at the leading portion 402 of the screen 401.
  • two electrical wires 438, 438' run diagonally to the centre of the screen 401, one from each corner at the trailing edge of the screen 401.
  • Each wire 438, 438' changes direction at the centre of the screen 401 and they run diagonally to the corners at the leading edge of the screen 401.
  • the wires 438, 438' are held together at the centre so as to maintain the X-shape formed by the wires 438, 438'.
  • the wires 437, 438, 438' whether carrying electricity or not, also serve to reinforce the material of larger screens.
  • straps may be used instead of wires.
  • Figure 11 shows the tension sensor 426 of figures 9 and 10 mounted on a wall 407 which forms the first support of a covering apparatus according to the invention.
  • Figure 12 is an enlarged view of figure 11 .
  • FIGS 13 and 14 show another embodiment of a tension sensor 426 for use with the invention.
  • the tension sensor 426 senses the tension in a wire 411, 412 of the covering system rather than sensing the tension in the screen 401. (as in figures 9 and 10 ).
  • the tension in the screen 401 is directly transmitted to the wires 411, 412.
  • the pressure sensor 429 is calibrated. If the pressure sensor 429 senses a pressure greater than a predetermined threshold, it issues a warning or, if the screen 401 is motorised, causes the screen 401 to be retracted.
  • the tension sensor 426 can easily be combined with the roller casings.
  • Figure 15 shows the tension sensor 426 of figures 13 and 14 mounted on a wall 407 which forms the first support of a covering apparatus according to the invention.
  • Figure 16 is an enlarged view of figure 15 .
  • the tension sensors 426 shown in figures 9 to 16 are enclosed within a housing 430 and therefore are protected from the weather. These systems are therefore more reliable than those involving wind sensors which must necessarily be exposed to the elements.
  • Figure 17 shows a storage system for a flexible sheet 401.
  • the storage system has two rollers 433, 434 which are synchronously driven so that the sheet 401 is stored around the rollers 433, 434 with a cross-sectional shape determined by the arrangement of the rollers 433, 434 (i.e. substantially oval in this embodiment).
  • a cross-sectional shape determined by the arrangement of the rollers 433, 434 (i.e. substantially oval in this embodiment).
  • Figures 18 and 19 show two ways in which the storage system of figure 17 can be driven.
  • the two storage rollers 433, 434 are driven by a third drive roller 435 of smaller diameter than the storage rollers 433, 434 and located between the storage rollers 433, 434 in driving contact therewith. In this way, both storage rollers 433, 434, which have the same diameter, are driven in the same direction at the same speed.
  • the two storage rollers 433, 434 are connected by a chain 436 so that when one roller 433, 434 is driven, the other roller 434, 433 is also driven synchronously.

Landscapes

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

Claims (18)

  1. Appareil de couverture (1) comprenant un écran extensible (3), un élément flexible longitudinal (4) et un élément rotatif (7), dans lequel un élément parmi l'élément flexible longitudinal (4) et l'élément rotatif (7) est fixe et l'écran (3) est fixé à l'autre élément parmi l'élément flexible longitudinal (4) et l'élément rotatif (7) de manière à permettre un mouvement de l'écran (3) par rapport à la partie fixe, dans lequel l'élément rotatif (7) est engagé par frottement sur l'élément flexible longitudinal (4), et caractérisé par des moyens (8) pour empêcher la rotation de l'élément rotatif (7), de sorte que l'écran (3) soit maintenu en place par rapport à la partie fixe.
  2. Appareil de couverture (1) selon la revendication 1, dans lequel l'écran (3) est extensible par rapport à l'élément flexible longitudinal (4), dans lequel l'écran (3) est fixé à l'élément rotatif (7) et dans lequel les moyens (8) pour empêcher la rotation maintiennent l'écran (3) en place par rapport à l'élément flexible longitudinal (4).
  3. Appareil de couverture (1) selon la revendication 1, dans lequel l'élément rotatif (7) est fixe, l'élément flexible longitudinal (4) est mobile par rapport à l'élément rotatif (7) et l'écran (3) est fixé à l'élément flexible longitudinal (4) et dans lequel les moyens (8) pour empêcher la rotation maintiennent l'écran (3) en place par rapport à l'élément rotatif (7).
  4. Appareil de couverture (1) selon la revendication 1, 2 ou 3, dans lequel l'élément flexible longitudinal (4) est enroulé au moins une fois autour de l'élément rotatif (7).
  5. Appareil de couverture (1) selon la revendication 4, dans lequel l'élément flexible longitudinal (4) est enroulé au moins deux fois autour de l'élément rotatif (7).
  6. Appareil de couverture (1) selon l'une quelconque des revendications précédentes, comprenant en outre un second élément rotatif (7), dans lequel l'élément flexible longitudinal (4) est enroulé autour du premier élément rotatif et du second élément rotatif.
  7. Appareil de couverture (1) selon la revendication 6, dans lequel l'élément flexible longitudinal (4) est enroulé autour du premier et du second élément rotatif (7) selon un motif en forme de huit.
  8. Appareil de couverture (1) selon la revendication 7, dans lequel l'élément flexible longitudinal (4) passe entre le premier et le second élément rotatif (7), puis autour du second élément rotatif, puis entre le premier et le second élément rotatif à nouveau, puis autour du premier élément rotatif dans le sens opposé à l'enroulement autour du second élément rotatif, puis entre le premier et le second élément rotatif une troisième fois avant de continuer dans sa direction originale.
  9. Appareil de couverture (1) selon l'une quelconque des revendications précédentes, comprenant en outre un moteur (9) pour entraîner en rotation au moins un élément rotatif (7).
  10. Appareil de couverture (1) selon la revendication 9, dans lequel les moyens pour empêcher la rotation sont appliqués au moteur (9).
  11. Appareil de couverture (1) selon la revendication 9 ou la revendication 10, comprenant en outre une transmission (8) entre le moteur (9) et le au moins un élément rotatif (7).
  12. Appareil de couverture (1) selon la revendication 11, dans lequel l'engrenage (8) comprend une transmission à vis sans fin.
  13. Appareil de couverture (1) selon la revendication 11 ou la revendication 12, dans lequel les moyens pour empêcher la rotation comprennent la transmission (8).
  14. Appareil de couverture (1) selon l'une quelconque des revendications précédentes, dans lequel les moyens pour empêcher la rotation sont un système de freinage.
  15. Appareil de couverture (1) selon l'une quelconque des revendications précédentes, dans lequel le ou chaque élément rotatif (7) a une portion dentée (7a) pour entraîner l'élément rotatif (7).
  16. Appareil de couverture (1) selon l'une quelconque des revendications précédentes, dans lequel le ou chaque élément rotatif (7) a un moyeu à friction (7b) pour enrouler l'élément flexible longitudinal (4) autour de celui-ci.
  17. Appareil de couverture (1) selon la revendication 16, dans lequel au moins une rainure (7c) est ménagée dans le moyeu à friction (7b).
  18. Appareil de couverture (1) selon l'une quelconque des revendications précédentes, comprenant une pluralité d'éléments flexibles longitudinaux (4) et dans lequel un élément rotatif (7) est prévu sur chaque élément flexible longitudinal (4).
EP07732231.1A 2006-03-31 2007-03-30 Systeme de couverture Not-in-force EP2007956B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07732231T PL2007956T3 (pl) 2006-03-31 2007-03-30 System zasłaniający

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0606579.1A GB0606579D0 (en) 2006-03-31 2006-03-31 Covering system
PCT/GB2007/001177 WO2007113518A2 (fr) 2006-03-31 2007-03-30 Systeme de couverture

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP11192232.4 Division-Into 2011-12-06

Publications (2)

Publication Number Publication Date
EP2007956A2 EP2007956A2 (fr) 2008-12-31
EP2007956B1 true EP2007956B1 (fr) 2013-10-02

Family

ID=36425062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07732231.1A Not-in-force EP2007956B1 (fr) 2006-03-31 2007-03-30 Systeme de couverture

Country Status (6)

Country Link
US (1) US20100243176A1 (fr)
EP (1) EP2007956B1 (fr)
ES (1) ES2440720T3 (fr)
GB (1) GB0606579D0 (fr)
PL (1) PL2007956T3 (fr)
WO (1) WO2007113518A2 (fr)

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IL288844B2 (en) * 2019-06-19 2024-05-01 Top Greenhouses Ltd Cover unfolds and retracts

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Also Published As

Publication number Publication date
WO2007113518A2 (fr) 2007-10-11
WO2007113518A3 (fr) 2008-01-17
PL2007956T3 (pl) 2014-03-31
GB0606579D0 (en) 2006-05-10
EP2007956A2 (fr) 2008-12-31
ES2440720T3 (es) 2014-01-30
US20100243176A1 (en) 2010-09-30

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