EP2960424A1 - Vorrichtung zum spannen eines markisentuchs - Google Patents

Vorrichtung zum spannen eines markisentuchs Download PDF

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Publication number
EP2960424A1
EP2960424A1 EP15173890.3A EP15173890A EP2960424A1 EP 2960424 A1 EP2960424 A1 EP 2960424A1 EP 15173890 A EP15173890 A EP 15173890A EP 2960424 A1 EP2960424 A1 EP 2960424A1
Authority
EP
European Patent Office
Prior art keywords
rotation
nut
spring
tube
fabric
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.)
Withdrawn
Application number
EP15173890.3A
Other languages
English (en)
French (fr)
Inventor
Cyril WATTRELOS
Pierre Luc MAUMI
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.)
Mariton
Original Assignee
Mariton
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 Mariton filed Critical Mariton
Publication of EP2960424A1 publication Critical patent/EP2960424A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • 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
    • 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
    • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
    • E06B9/54—Roller fly screens
    • 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
    • E06B9/60—Spring drums operated only by closure members

Definitions

  • the invention relates to a device for tensioning a blind fabric. It also relates to a winding mechanism of a blind fabric incorporating such a device for energizing. It also relates to a method for adjusting this winding mechanism.
  • It relates to the technical field of roller blinds and more particularly to devices for stretching the blinds when they are unrolled.
  • a blind fabric When a blind fabric is partially or completely unwound, it is advantageous that it is tensioned. From an aesthetic point of view, a flat stretched canvas has a more attractive visual appearance than a relaxed canvas that forms a wave or fold. In addition, a stretched canvas helps strengthen its wind resistance.
  • the tensioning devices are known from the prior art.
  • the patent document FR 2,937,673 (GODEST) describes for example a tension mechanism in which a drawbar is associated with the fabric.
  • This bar incorporates an axis respectively holding at its ends two gears, each gear can cooperate with a rack arranged opposite, in a constituent amount of the frame.
  • the drawbar incorporates a helical torsion spring capable of exerting a driving torque on these gears so as to constantly tighten the blind.
  • This mechanism has among other disadvantages to be relatively complex to achieve and bulky.
  • the size is due to the fact that the tension bar must have a large diameter to receive the gears and the coil spring. This tension bar also impacts the visual appearance of the fabric.
  • the patent document CN 201 924 815 discloses a device for decelerating a blind fabric comprising a winding tube rotatably mounted and on which the blind fabric is wound and unrolled.
  • a helical spring is disposed in the winding tube, a conical end nut being adapted to move axially by screwing on the turns of said coil spring.
  • this device is such that when the nut reaches a first stop position, it is locked in rotation, the winding tube can no longer continue its rotation.
  • This deceleration device is relatively complex and cumbersome in particular because of the presence of the damper block.
  • this device is unsuitable for the tensioning of a blind fabric insofar as the friction torque generated only has effect on a moving fabric which rises to its wound position, this pair being inoperative on a canvas that is locked in a partially or completely unrolled position.
  • an object of the invention is to provide a tensioning device that is compact.
  • Another object of the invention is to be able to adapt this tensioning device in an existing blind, modifying at least these constituent elements.
  • Yet another object of the invention is to propose a tensioning device whose design is simple and inexpensive.
  • a further object of the invention is to provide a tensioning device that does not change the visual appearance of the fabric.
  • the invention also aims to provide a tensioning device whose adjustment is simple and fast.
  • the nut is adapted to move axially by screwing on the turns of the helical spring during the rotation of the winding tube, said nut thus moving to reach a stop position where it is engaged with said spring, this last then exerting a return torque on said nut when said tube continues its rotation.
  • the helical spring and the nut each have a complementary abutment element, which cooperate when said nut reaches the stop position, so that the continued rotation of said nut induces a torsion movement to said spring.
  • the tensioning mechanism is now directly integrated in the winding tube, and not deported to another end of the fabric.
  • This design allows not only to have a compact device, but also to easily integrate into an existing winding mechanism.
  • this tensioning device is housed in the winding tube, the visual appearance of the fabric is fully preserved.
  • the tensioning device object of the invention is used to tension the fabric of a blind.
  • This canvas can be both a cloth fabric to sift or hide the light of day, a mosquito net.
  • the awning can be a window, roof or veranda blind.
  • the blind includes a mechanism for winding the fabric 2.
  • this winding mechanism comprises a frame 1 adapted to be fixed on or in the frame of a window.
  • the frame 1 has an upper edge 10, a lower edge 11 and preferably two lateral uprights 12. These lateral uprights 12 may be in the form of rails.
  • the frame In the case of a window or roof awning, the frame has for example a length of between 1 m and 3 m and a width of between 50 cm and 2 m. In the case of a conservatory awning, these dimensions may be larger.
  • the fabric 2 is wound and unwinds on a winding tube 3. It has a first end 20 fixed to the tube 3 and a second end 21 which slides in the side rails 12.
  • the second end 21 is provided with side tongues which slide in these slides 12 to ensure better guidance of the fabric 2.
  • the second end 21 is moved manually by the user.
  • the end 21 slides in the frame 1 between a folded position ( figures 1a and 1 C ) and an occultation position ( figure 1d ).
  • the fabric 2 In folded position, the fabric 2 is wound on the winding tube 3 and fully releases the frame 1. Its second end 21 is located at the upper edge 10 of the frame.
  • the fabric 2 can be kept wound at rest by means of a spring (not shown) connected to the winding tube 3.
  • the winding tube 3 is rotatably mounted in a housing 4 disposed at the upper edge 10 of the frame 1. Each end of the tube 3 is preferably pivotally mounted on bearings 41 ( Figures 3a to 3d ) integrated in the housing 4. PTFE ball bearing or bearing friction reducing means may be used.
  • the fabric 2 In folded position, the fabric 2 is fully housed in the housing 4.
  • the latter has a length that corresponds substantially to the width of the frame 1. Its width - or its diameter - depends on the dimensions and / or the thickness of the fabric 2.
  • the housing 4 may be made of plastic or aluminum, consist of one or more parts, and be removably attached to the frame 1.
  • the tube 3 can be made of metal, aluminum, plastic, carbon, or a composite material. It has a length equal to or greater than the width of the fabric 2. Its inner diameter is between 1 cm and 10 cm, preferably 3 cm. Its thickness is between 2 mm and 1 cm depending on the nature of the chosen material.
  • the winding tube 3 directly integrates the mechanism for tensioning the fabric when its lower end 21 is in the occultation position.
  • this tensioning mechanism comprises a helical spring 5 disposed in the tube 3, which spring 5 and which tube 3 are coaxial.
  • This spring 5 is a cylindrical spring wire circular section, usually marketed as a compression spring.
  • the spring 5 is made of stainless steel or piano wire. Its length is between 10 cm and 20 cm, advantageously 15 cm. Its average diameter is about 1 cm for a tube 3 with an internal diameter of 3 cm. The number of useful turns is between 20 and 60. The pitch between two adjacent turns is about 4 mm. The diameter of the wire is between 0.5 mm and 3 mm.
  • the tensioning mechanism also comprises a nut 6 mounted to be movable in translation in the tube 3, along the longitudinal axis A.
  • the nut 6 is in the form of a cylindrical piece whose external diameter corresponds to the internal diameter of the tube 3. Its inner diameter corresponds substantially to that of the spring 5. Its length is for example between 1 cm and 3 cm. It can be made of metal or plastic type PTFE so as to reduce friction with the inner surface of the tube 3.
  • the nut 6 comprises, on its outer surface, at least one, preferably two grooves 63. These grooves are longitudinal and extend over the entire length of the nut 6.
  • the inner surface of the tube 3 comprises longitudinal ribs 33 complementary shapes, adapted to be housed in the grooves 63. When the ribs 33 are engaged with the grooves 63, the nut 6 cooperates with the tube 3 so that the rotation of said nut causes the rotation of said tube and vice versa, which nut retaining its degree of freedom in translation in said tube.
  • the inner surface of the nut 6 is threaded so as to be screwed onto the turns of the spring 5.
  • the nut 6 is thus adapted to move axially by screwing on the turns of the spring 5 during the rotation of the tube 3.
  • the ribs 33 which are engaged with the grooves 63 drive the nut 6 in rotation.
  • the nut 6 then moves axially by screwing on the turns of the spring 5 during the rotation of the tube 3.
  • the nut 6 thus moves axially on the spring 5 until reaching a stop position ( figures 1a , 1b , 1d , 3a , 3b , 3d , 5 ) where it is engaged with said spring.
  • a stop position figures 1a , 1b , 1d , 3a , 3b , 3d , 5
  • the nut 6 is also rotated: the spring 5 then starts to twist, thereby exerting a return torque on the nut 6 and thus on the tube 3.
  • the spring 5 and the nut 6 each have a complementary stop element, which cooperate when said nut reaches the stop position, so that the rotation of said nut induces a torsion movement to said spring.
  • the free end 51 of the spring 5 is shaped so as to have a portion of straight wire, oriented parallel or perpendicular to the axis A.
  • the nut 6 has an element 61 projecting against which abuts this free end 51 thus shaped, when said nut reaches said end.
  • the nut 6 continues its rotational movement so that the element 61 acts on the free end 51 to create a torsion torque in the spring 5.
  • This torque is in fact a couple of recall, which opposes the rotation of the nut 6 and therefore to that of the tube 3.
  • the spring 5 is advantageous to prevent the spring 5 from bending when the nut 6 is removed from the free end 51. Indeed, the latter could interfere with the tube 3 and more particularly with the ribs 33.
  • this rod 7 is coaxial with the spring 5.
  • the rod 7 is rigid, made of metal or plastic, its diameter being smaller than the internal diameter of the spring 5. It thus ensures the horizontality and the coaxiality of the spring 5 at any point of the stroke of the nut 6.
  • One of the ends of the rod 7 can also be functionally coupled to a brake (not shown) which slows the rise of canvas 2, and contributes to the comfort of handling the awning.
  • the spring 5 Independently of its cooperation with the nut 6, the spring 5 is rotatably mounted in the tube 3. This degree of freedom in rotation is however temporary.
  • the spring 5 is functionally coupled to a mechanism 8 for adjusting the stroke of the nut 6 on said spring before it reaches the stop position, and thereby the torsion torque exerted on the tube 3.
  • this mechanism 8 is arranged at the end 52 of the spring 5. It is in the form of a freewheel mechanism which allows a rotation of the spring 5 in one direction of rotation and locks in the other. This direction of rotation corresponds to the direction of rotation of the tube 3 when the fabric 2 is unwound. The spring 5 can thus be rotated when the fabric 2 unwinds, and being locked in rotation when said fabric is wound on the tube 3.
  • the mechanism 8 is formed by a toothed wheel 80 secured to the spring 5.
  • This toothed wheel 80 is fixed to the end 52 of the spring 5. It is located outside the tube 3, and is offset from the end of this last.
  • the axis of rotation of this gear wheel 80 corresponds to the longitudinal axis A. It is for example an aluminum wheel or PTFE, whose diameter is between 2 cm and 5 cm. It comprises for example 20 teeth.
  • This gear wheel 80 meshes with a set screw 81 whose turns are engaged with the teeth of said wheel.
  • the toothed wheel 80 and the screw 81 have their axis of rotation orthogonal, the axis of rotation B of the screw 81 being perpendicular to the longitudinal axis A.
  • the adjusting screw 81 is inserted in a cylindrical housing 810 integral with the housing 4.
  • This housing 810 may for example be obtained during molding of the housing 4 or be attached. Its longitudinal axis is coaxial with the axis of rotation B of the adjusting screw 81.
  • the housing 810 is blind, that is to say that it is closed by a bottom wall 811.
  • the internal diameter of the housing 810 is slightly greater, for example 1 mm, to the outer diameter of the adjusting screw 81. In this way the adjusting screw 81 is not only rotatably mounted in the housing 810, but also has a degree of freedom in translation according to the common longitudinal axis B.
  • the housing 810 has a radial opening 812 through which the toothed wheel 80 meshes with the adjusting screw 81.
  • a helical compression spring 82 is installed in the housing 810.
  • This spring 82 is arranged to exert a force on the adjusting screw 81 which tends to push the latter towards the bottom wall 811.
  • a screw clamping device 83 is mounted in the housing 810.
  • This clamping screw 83 comprises a thread which cooperates with a complementary tapping formed on the inner surface of the housing 810.
  • the spring 82 is free or not completely compressed by the clamping screw 83, its turns being spaced apart from each other.
  • the toothed wheel 80 is rotated in the direction schematized by the arrow f (which corresponds to the direction of rotation of the unwinding of the fabric 2), the teeth of said wheel meshes with the threads of the screw 81, and causes the latter to the spring 82.
  • the latter is compressed, allowing the screw 81 to retract each tooth of the wheel 80.
  • the toothed wheel 80 can rotate freely in this direction of rotation, and the coil spring 5: when the fabric 2 is unwound, the winding tube 3 is rotated, causing in its movement the nut 6.
  • the latter is engaged with the end 51 of the spring 5, the rotation of the nut 6 through the tube 3, also causes the rotation of the spring 5 which can rotate freely.
  • the spring 82 is completely compressed by the clamping screw 83, its turns being contiguous.
  • the screw 81 is held against the bottom wall 811, no translational movement being possible, neither towards the bottom wall nor towards the spring 82.
  • This locking in position of the screw 81 is also obtained when the compression of the spring 82 is such that it opposes any translational movement of said screw.
  • the turns of the screw 81 block the teeth of said wheel and prevent rotation of the latter. It is the same when the toothed wheel 80 is rotated in the opposite direction.
  • This operation can be broken down into two distinct phases: a setting phase of the tensioning device of the fabric 2, and a use phase.
  • the adjustment phase is performed by an installer. However, by its ease of implementation, it can be done by the end user.
  • the fabric 2 is wound before winding tube 3, so that its second end 21 is in the folded position, that is to say, raised at the upper edge 10 of the frame 1 ( figures 1a and 3a ).
  • the nut 6 is also moved on the helical spring 5 until reaching the stop position where it is engaged with the free end 51.
  • the aforementioned freewheel mechanism 8 is adjusted so that the unwinding of the wire 2 causes the winding tube 3, the nut 6, and the coil spring 5 to rotate. More particularly, referring to FIG. the figure 2a , the clamping screw 83 is positioned so as to leave the spring 82 free. When the fabric 2 is unrolled, the winding tube 3 is rotated, causing the nut 6 to move in its movement. The latter being engaged with the end 51 of the coil spring 5, the rotation of the nut 6 also causes the rotation of said spring which can rotate. The nut 6 does not move on the coil spring 5 and remains positioned against the free end 51 ( figure 3b ).
  • the fabric 2 is thus partially unwound until its second end 21 is located at a distance h between 5 cm and 20 cm from the lower edge 11 of the frame 1.
  • the fabric 2 is wound until its second end 21 returns to the folded position ( figure 1c ).
  • This winding causes the rotation of the tube 3 and the nut 6.
  • the freewheel mechanism 8 blocks the rotation of the coil spring 5 (the adjusting screw 81 being in abutment against the bottom wall 811 and blocking the rotation of the the toothed wheel 80), the nut 6 moves axially on said spring, and moves away from the free end 51. More particularly, the nut 6 moves by a distance L which is proportional to the unwinding length of the canvas 2 illustrated on the figure 1 b.
  • the adjustment phase is completed by neutralizing the freewheel mechanism 8 to interrupt any rotation of the coil spring 5.
  • This neutralization is shown schematically by the crosses on the figures 1c and 1d .
  • the clamping screw 83 is manipulated so as to compress the spring 82 and to lock the adjusting screw 81 in translation, the toothed wheel 80 can no longer rotate in any direction of rotation.
  • this neutralization step of the mechanism 8 is implemented when the fabric 2 is partially unwound (configuration of the figure 1b ).
  • the mechanism 8 advantageously incorporates a return torque adjusting means.
  • This means is adapted to allow rotation of the toothed wheel 80 even when the mechanism 8 is neutralized.
  • the rotation of the toothed wheel 80 causes the rotation of the spring 5, which rotation influences the torsion of said spring and thus the return torque.
  • the adjusting screw 81 comprises a cavity 813 adapted to cooperate with the head of a tool 9.
  • This impression 813 is made at the head of the screw 81, and is in the form of a slot (the tool 9 being for example a screwdriver), a cross (the tool 9 being for example a cruciform), hexagon socket (the tool 9 being for example an Allen key) ; So that the head of the tool 9 can cooperate with this cavity 813, the clamping screw 83 is tubular so as to be traversed by this tool.
  • the fitter or the operator can thus manipulate the tool 9 to turn the adjusting screw 81 about the axis B, in a meaning or in the other.
  • the screw 81 rotates the toothed wheel 80 and therefore the helical spring 5, which has the effect of amplifying or reducing the torsion of said spring and thereby the return torque.
  • This post-adjustment operation of the return torque can also be performed when the mechanism 8 is neutralized and the fabric 2 is in the folded position ( Figure 2c ).
  • the freewheel mechanism can be an obstacle mechanism (eg ratchets) or a jamming mechanism (eg with rolling elements).
  • an obstacle mechanism eg ratchets
  • a jamming mechanism eg with rolling elements

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP15173890.3A 2014-06-26 2015-06-25 Vorrichtung zum spannen eines markisentuchs Withdrawn EP2960424A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1455981A FR3022943B1 (fr) 2014-06-26 2014-06-26 Dispositif de mise en tension d'une toile de store.

Publications (1)

Publication Number Publication Date
EP2960424A1 true EP2960424A1 (de) 2015-12-30

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Family Applications (1)

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EP15173890.3A Withdrawn EP2960424A1 (de) 2014-06-26 2015-06-25 Vorrichtung zum spannen eines markisentuchs

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EP (1) EP2960424A1 (de)
FR (1) FR3022943B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110924842A (zh) * 2019-11-28 2020-03-27 徐州大亚智能科技有限公司 一种方便调节透光率的智能窗
FR3104633A1 (fr) * 2019-12-13 2021-06-18 Mariton Sa Dispositif d'enroulement d'une toile de store
EP4039937A1 (de) 2021-02-08 2022-08-10 Mariton SA Vorrichtung zum aufrollen eines markisentuchs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10132107A1 (de) * 2001-03-23 2002-10-02 Benthin Ag Vorrichtung zum gesteuerten Bremsen der Aufwickelbewegung eines Springrollos
FR2937673A1 (fr) 2008-10-29 2010-04-30 Yvon Godest Mecanisme de tension d'un store
CN201924815U (zh) 2010-06-22 2011-08-10 闫云龙 一种弹簧式卷轴定位器及定位阻尼装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10132107A1 (de) * 2001-03-23 2002-10-02 Benthin Ag Vorrichtung zum gesteuerten Bremsen der Aufwickelbewegung eines Springrollos
FR2937673A1 (fr) 2008-10-29 2010-04-30 Yvon Godest Mecanisme de tension d'un store
CN201924815U (zh) 2010-06-22 2011-08-10 闫云龙 一种弹簧式卷轴定位器及定位阻尼装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110924842A (zh) * 2019-11-28 2020-03-27 徐州大亚智能科技有限公司 一种方便调节透光率的智能窗
FR3104633A1 (fr) * 2019-12-13 2021-06-18 Mariton Sa Dispositif d'enroulement d'une toile de store
EP4039937A1 (de) 2021-02-08 2022-08-10 Mariton SA Vorrichtung zum aufrollen eines markisentuchs

Also Published As

Publication number Publication date
FR3022943B1 (fr) 2018-05-25
FR3022943A1 (fr) 2016-01-01

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