EP4039937A1 - Vorrichtung zum aufrollen eines markisentuchs - Google Patents

Vorrichtung zum aufrollen eines markisentuchs Download PDF

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Publication number
EP4039937A1
EP4039937A1 EP21155795.4A EP21155795A EP4039937A1 EP 4039937 A1 EP4039937 A1 EP 4039937A1 EP 21155795 A EP21155795 A EP 21155795A EP 4039937 A1 EP4039937 A1 EP 4039937A1
Authority
EP
European Patent Office
Prior art keywords
shaft
rotation
tube
spring
link
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Withdrawn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
EP21155795.4A
Other languages
English (en)
French (fr)
Inventor
Cyril WATTRELOS
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 SA
Original Assignee
Mariton 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 Mariton SA filed Critical Mariton SA
Priority to EP21155795.4A priority Critical patent/EP4039937A1/de
Publication of EP4039937A1 publication Critical patent/EP4039937A1/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Withdrawn legal-status Critical Current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
    • 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
    • E06B9/50—Bearings specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—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 rolling up an awning fabric, as well as an awning equipped with such a device.
  • the field of the invention relates to roller blinds and more particularly to devices for tensioning a spring making it possible to automatically roll up the fabric of a blind.
  • Devices for rolling up an awning fabric are known from the prior art. They allow the canvas to be rolled up automatically when it is partially or totally unrolled.
  • a winding device known from the prior art is schematized on the figures 1 to 4 . It comprises a casing 2 in which a roller tube 1 is rotatably mounted around the longitudinal axis AA of the latter. Each end of tube 1 is preferably pivotally mounted on bearings 10 integrated or housed in housing 2. Friction reduction means of the ball bearing or PTFE bearing type can be used.
  • the fabric 3 of the blind is fixed on the tube 1 so as to be able to roll up/unroll on said tube.
  • a passage 20 is arranged in the box 2 to allow the fabric 3 to pass.
  • the canvas 3 has a first end 31 fixed to the tube 1 and a second end 30 which slides in side slides 32 (only shown on the figure 1 ).
  • the second end 30 is provided with lateral tongues which slide in these slideways 32 to ensure better guiding of the fabric 3.
  • the second end 30 is moved manually by the user.
  • the end 30 slides between a folded position ( figure 1 ) and a concealment position ( picture 3 ).
  • the fabric 3 In the folded position, the fabric 3 is rolled up on the tube 1 and housed in the casing 2. Its second end 30 is located at the level of the passage 20 of the box 2.
  • the concealment position the fabric 3 is unrolled and conceals the frame of a window or a door, for example.
  • a locking mechanism 33 makes it possible to maintain the second end 30 in the concealed position. This end 30 can be fixed selectively between these two extreme positions.
  • the tube 1 incorporates a mechanism for tensioning the fabric 3 to roll it up automatically when it is unrolled.
  • This mechanism comprises a shaft 4 mounted in the tube 1 and which extends in said tube along the longitudinal axis A-A. In use, this shaft 4 is fixed, that is to say it has no relative movement with respect to the housing 2. In other words, the rotation of the tube 1 during winding/unwinding of the canvas 3, does not cause the rotation of the shaft 4.
  • the fabric tensioning mechanism 3 also comprises a carriage 5 mounted to move in translation in the tube 1 along the longitudinal axis AA.
  • the carriage 5 is mounted sliding on the shaft 4.
  • the inner wall of the tube 1 comprises one or more longitudinal ribs 11 which cooperate with one or more complementary grooves (not shown) arranged in the length of the carriage 5.
  • the carriage 5 cooperates with the tube 1 so that the rotation of said tube causes the rotation of said carriage and vice versa, the carriage retaining its degree of freedom in translation in said tube.
  • a spring 6 is engaged with the carriage 5.
  • the spring 6 is a helical spring installed around the shaft 4. It has one end engaged with the carriage 5 and another end engaged with an element abutment 42 of the shaft 4, for example a shoulder.
  • the patent document KR101206002 describes a winding device according to the preamble of claim 1 and in which a mechanism makes it possible to adjust the return torque induced by the torsion of the spring.
  • the tensioning of the spring is carried out by maneuvering a screw in engagement with a pinion fixed to the shaft. Simply maneuvering the screw rotates the shaft in a direction that increases or decreases the spring-induced restoring torque, as appropriate.
  • the screw may subsequently be manipulated inadvertently by a user, or become unscrewed in particular during transport or installation of the winding device, so that the return torque is liable to become out of adjustment.
  • adjusting the restoring torque becomes very complex, if not impossible.
  • EP2960424 discloses another mechanism for adjusting the restoring torque induced by the torsion of the spring. This mechanism has the same drawbacks as those described previously.
  • the object of the invention is to overcome all or part of the aforementioned drawbacks.
  • Another object of the invention is to propose a mechanism for adjusting the return torque which is of simple design, easy to install and whose use is easy for an installer and/or for the end user.
  • the solution proposed by the invention is a winding device according to claim 1.
  • the tensioning of the spring is done by disengaging the operating member from the locking element so as to release the degree of freedom in rotation of the shaft. It then suffices simply for the installer or the end user to operate the operating member to rotate the shaft in a direction which increases or decreases the return torque induced by the spring, as the case may be.
  • the degree of freedom in rotation of the shaft is suppressed by engaging the operating member of the locking element. The winding device then regains the configuration of the figures 1 to 4 and works in a classic way.
  • the connecting member makes it possible to secure the pinion and the shaft to the support, independently of the cooperation between the operating member and the locking element.
  • the connecting member makes it possible to secure the pinion and the shaft to the support, independently of the cooperation between the operating member and the locking element.
  • the support is fixed to the casing, the removal of the degree of freedom in rotation of the shaft is forced, so that the return torque of the spring cannot be disturbed.
  • This is particularly advantageous so as not to disturb the adjustment torque during transport or installation of the winding device, in particular when this adjustment torque is preset in the factory.
  • an operator has the possibility of re-engaging the connecting member to secure the pinion and the shaft to the support. It is then sufficient to separate the support from the housing and to rotate the assembly (support-pinion-shaft) to adjust the return torque.
  • Another aspect of the invention relates to a blind comprising a fabric and a device for rolling up said fabric, which rolling device conforms to one of the claimed characteristics.
  • the winding device that is the subject of the invention is used to automatically roll up the fabric of a blind.
  • This canvas can for example be a fabric canvas to sift or block out daylight, or a mosquito net.
  • the blind can be a window blind, a roof blind, a veranda blind, etc.
  • the winding device comprises the elements described with reference to the figures 1 to 4 .
  • the description of these elements is reproduced here by reference. Some details are provided in the following paragraphs.
  • the box 2 can be made of plastic or aluminum, consist of one or more parts, and be fixed in a removable manner on a frame. It is preferably made in several removable parts to be able to house and install the different elements.
  • a support 24 acting as a flange advantageously closes a lateral end of the housing 2.
  • This support 24 is fixed in a removable manner, for example fixed by screwing or clipping, on the lateral end of the housing.
  • the housing 2 has a length which substantially corresponds to the width of the frame in which it is mounted. Its width - or its diameter - depends on the dimensions and/or the thickness of the canvas 3.
  • the tube 1 can be made of metal, aluminum, plastic, carbon, or a composite material. It has for example a length of between 20 cm and 250 cm, this length being equal to or greater than the width of the fabric 3. Its internal diameter is between 1 cm and 10 cm, preferably 3 cm. Its thickness is between 1 mm and 1 cm depending on the nature of the material chosen.
  • the shaft 4 can be made of metal, aluminum, plastic, carbon, or a composite material. Its length corresponds substantially to that of the tube 1. Its diameter is for example between 1 cm and 5 cm.
  • the spring 6 is preferably a cylindrical helical spring with a wire of circular section, generally marketed as a torsion spring.
  • the length of the spring 6 is between 10 cm and 40 cm; its average diameter is approximately 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 carriage 5 is advantageously in the form of a cylindrical part whose external diameter corresponds to the internal diameter of the tube 1. Its length is for example between 1 cm and 3 cm. It can be made of metal or plastic of the PTFE type so as to reduce friction with the shaft 4.
  • the shaft 4 has a degree of freedom in rotation around the longitudinal axis AA.
  • Shaft 4 is preferably pivotally mounted on bearings 41 integrated in housing 2 and/or in support 24. Friction reduction means of the ball bearing or PTFE bearing type can be used.
  • the rotation of the shaft 4 does not cause a simultaneous rotation of the tube 1.
  • the rotation of the shaft 4 causes a torsion movement in the spring 6.
  • the tube 1 being locked in rotation, the carriage 5 is locked in position.
  • the torsion of the spring 6 will increase.
  • the shaft 4 in the other direction eg counterclockwise
  • the torsion of the spring will decrease. It is thus possible to modify the tension of the spring 6 according to the need and in fact the value of the return torque which it exerts on the carriage 5 and which it induces on the tube 1.
  • An operating member 7 ensures the rotation of the shaft 4. This operating member 7 is accessible from outside the casing 2 so that it is not necessary to disassemble the latter to modify the tension of the spring 6.
  • this maneuvering member 7 is preferably a grippable and maneuverable link from the outside of the housing 2.
  • This link 7 is meshed with a pinion 43 coupled to the shaft 4.
  • the pinion 43 is for example secured by screwing or snap-fastening to one end of the shaft 4.
  • This pinion 43 can be made in one or more parts 431, 432 assembled together.
  • a two-part design as illustrated in the appended figures makes it easier to put the link 7 in place.
  • the pinion 43 is made of the same material as the shaft 4 or of a different material. By way of example, its diameter is between 2 cm and 20 cm and its thickness between 2 mm and 2 cm. The pinion 43 makes it possible to reduce the efforts to rotate the shaft 4.
  • the link 7 is buckled on the pinion 43 to engage it operationally so that two grippable strands of said link are located on either side of said pinion.
  • a pull (downward) on the first strand 70a causes rotation of the pinion 43 and also of the shaft 4 in a direction where the torsion of the spring 6 increases.
  • a pull (downward) on the second strand 70b causes rotation of the pinion 43 and of the shaft 4 in a direction where the torsion of the spring 6 decreases.
  • the installer and/or the end user therefore only has to pull on one of the strands to adjust the tension of the spring 6, and the restoring torque that it induces, at their convenience.
  • the length of each of the strands 70a, 70b is for example between 10 cm and 50 cm so that they are easily accessible even when the box 2 is placed high up.
  • the link 7 is preferably in the form of a ball chain.
  • This type of chain is known per se and comprises a plurality of balls 71 spaced apart and fixed on a flexible cord 72.
  • the pinion 43 has on its periphery recesses 430 in which the balls 71 engage to form a mechanical meshing system .
  • the link 7 may consist of a toothed belt whose notches engage in the teeth of the pinion 43. It is also possible to envisage using an elastomer belt whose friction with a smooth peripheral surface of the pinion 43 ensures the rotation of the shaft 4.
  • each strand 70a, 70b is associated with its own guide.
  • a first guide 200a is arranged in the support 24 to guide at least a portion of the first strand 70a.
  • a second guide 200b is arranged in the support 24 to guide at least a portion of the second strand 70b.
  • these two guides 200a, 200b are located below the pinion 43 and are identical. Their width corresponds substantially to the diameter of the balls 71, being however slightly greater so that said balls can easily slide inside.
  • the guides 200a, 200b are for example spaced apart from each other by 5 mm to 2 cm.
  • the pinion 43 is rotatably mounted in the support 24. More particularly, the support 24 has a housing 23 in which the end of the shaft 4 springs into engagement with said pinion.
  • This housing 23 can for example be obtained during the molding of the support 24 or machined.
  • This housing 23 has a circular shape whose diameter is greater than that of the pinion 43 so that the latter can rotate freely. The diameter of the housing 23 is such that the balls 71 engaged in the recesses 430 do not rub against the peripheral wall of said housing while not being able to emerge from said recesses.
  • a wall 433 of pinion 43 advantageously closes housing 23 to prevent link 7 from coming out of it.
  • Guides 200a, 200b are also made in support 24 and open into housing 23. Wall 433 also makes it possible to close these guides 200a, 200b so that the strands 70a, 70b cannot come out.
  • the degree of freedom in rotation of the shaft 4 must be temporary. Indeed, once the adjustment of the tension of the spring 6 is carried out, the shaft 4 must be locked in rotation. In which case, during the rotation of the tube 1, the carriage 5 would also rotate the shaft 4, without the possibility of applying a torsion movement to the spring 6. There is therefore provided a locking element 8 adapted to block the rotation of shaft 4 when rolling up/unrolling fabric 3.
  • this locking element 8 cooperates with the link 7 to block the movement of the latter and, consequently, that of the shaft 4. Indeed, if the link 7 is blocked in position and is no longer maneuverable, the setting rotation of pinion 43 and shaft 4 cannot take place. More particularly, the link 7 is adapted to engage or disengage from the locking element 8, so that when said link is engaged in said element then the degree of freedom in rotation of the shaft 4 is suppressed (c that is to say that the shaft does not rotate) during the winding/unwinding of the fabric 3. Conversely, when the link 7 is disengaged from the locking element 8 then the degree of freedom in rotation of said shaft is released, that is to say that the shaft 4 can rotate. In the case where the link 7 is a ball chain 71, the locking element 8 is adapted to engage at least one of said balls, preferably at least one ball 71 of each strand 70a, 70b.
  • the locking element 8 is in the form of a plate 80 fixed to the support 24, below the guides 200a, 200b for example.
  • This plate has notches 80a, 80b in which the strands 70a, 70b can engage.
  • the notches 80a, 80b are configured to block the balls 71. They have a downwardly flared shape, for example a conical shape.
  • the lower end of the notches 80a, 80b has dimensions higher than those of the balls 71 so that the latter can be inserted into said notches by this lower end.
  • the upper end of the notches 80a, 80b has dimensions smaller than those of the balls 71 so that the latter are blocked at this lower end.
  • the locking element 8 is in the form of a clamp which clamps the link 7 to block it in position.
  • the locking element consists of a pin of the shaft 4 (or of the pinion 43) in the housing 2, which pin is removed during the adjustment phase of the tension of the spring 6 and reengaged during normal use of the awning.
  • the pinion 43 is in the form of a toothed wheel.
  • the operating member consists of another toothed wheel 9, or button, which meshes with the teeth of the pinion 43.
  • the button 9 is accessible from outside the housing 2. By turning the button 9, the pinion 43 is rotated. Button 9 can be turned manually with a finger of the installer and/or of the end user.
  • This solution may prove to be less practical than the link 7 described previously insofar as the button 9 may be located high up and therefore difficult to access for an installer and/or an end user, except when using a ladder or a stepladder.
  • the link 7 is from this point of view more easily accessible, and can be easily maneuvered from the ground, without having to use a ladder or a stepladder.
  • the spring 6 is here a compression spring engaged with the carriage 5 and with the shaft 4.
  • the fabric tensioning mechanism 3 comprises a screw-nut mechanism.
  • the carriage 5 has an internal thread engaging with a threaded portion 40 of the shaft 4.
  • said carriage cooperates with said tube so that the rotation of said tube causes the rotation of said carriage and vice versa, the carriage retaining its degree of freedom in translation in said tube.
  • Carriage 5 may in particular include a thread on its outer surface which cooperates with a complementary thread made on a portion of the inner surface of tube 1.
  • Carriage 5 then has grooves (or grooves) provided along the length of its central bore.
  • the outer surface of the shaft 4 has longitudinal grooves (or grooves) of complementary shapes.
  • the mechanism for rotating shaft 4 is identical to that described with reference to the first embodiment.
  • carriage 5 moves along axis AA.
  • the carriage 5 By rotating shaft 4 in one direction (for example clockwise), the carriage 5 will move in a direction where the spring 6 is compressed.
  • the shaft 4 in the other direction for example counterclockwise
  • the carriage 5 will move in a direction where the spring 6 relaxes. It is thus possible to modify the tension of the spring 6 according to need and, in fact, the value of the return torque that it induces on the tube 1.
  • a pull (downward) on the first strand 70a causes a rotation of the shaft 4 in a direction where spring 6 compresses (carriage 5 moving towards stop 42).
  • a pull (downward) on the second strand 70b causes rotation of the shaft 4 in a direction where the spring 6 relaxes (the carriage 5 moving away from the stop 42).
  • the adjustment phase is carried out by an installer when installing the awning, or by the end user if the latter notices a certain failure in the automatic raising of the fabric 3.
  • the adjustment phase can also be carried out by unrolling the fabric 3, so that its second end 30 is in the hidden position. If necessary: the rotation of the tube 1 is blocked and the degree of freedom in rotation of the shaft 4 is released.
  • the operating member 7 is a ball chain 71, it is disengaged from the locking 8.
  • the operating member 7, 9 is manipulated to rotate the shaft 4 and increase or decrease the torsion of the spring 6 (first embodiment) or move the carriage 5 in a direction of tensioning or relaxation of the spring 6 (second embodiment), as the case may be.
  • the value of the return torque that the spring 6 is capable of inducing on the tube 1 is thus very easily modified.
  • the installer or the end user can check the correct adjustment of the tension of the spring 6 - or of the restoring torque that it induces - by ensuring that the fabric 3, when it is unfolded, rolls up correctly and automatically on the tube 1. This verification being carried out, the rotation of the shaft 4 is blocked and the degree of freedom in rotation of the tube 1 is released, if necessary.
  • the operating member 7 is a ball chain 71, it is engaged in the locking element 8 as illustrated in the figure 6 and 8 . We then find the normal use of the winding device as described in particular with reference to the figures 1 to 4 .
  • the link 7 Since the link 7 is handled only during the adjustment phase, it is advantageous to prevent it from hanging in the void during the phase of normal use of the winding device, not only for aesthetic considerations, but also to avoid tampering with it inadvertently. As illustrated on the figure 7 , it is advantageously provided to store the link 7 in a compartment 25 arranged in the housing 2. This compartment 25 can be made accessible by means of a flap or folding cover 250. To access the link 7, it suffices to open the cover 250 so that link 7 comes out of compartment 25 ( figure 5 and 6 ). After having finalized the phase of adjusting the tension of the spring 6, the link 7 is completely stored in the compartment 25 and the lid 250 closed.
  • a connecting member 44 is used which is distinct from the element of lock 8. This connecting member 44 is adapted to secure together the support 24, the pinion 44 and the shaft 4. The degree of freedom in rotation of the shaft 4 is thus eliminated.
  • This connecting member 44 can be dismantled so as to allow the relative rotation of the pinion 43 with respect to the support 24 when said member is dismantled, and thus release the degree of freedom in rotation of the shaft 4.
  • the connecting member 44 is a screw or a pin, accessible from the outer face of pinion 43, and which engages said pinion and support 24, these parts having holes and/or threads provided for this purpose.
  • the connecting member 44 is advantageously put in place during the transport and/or installation phases of the winding device. It is removed during the spring 6 tension adjustment phase by means of the operating device 7, 9.
  • the connecting member 44 can also be (re)installed if the maneuvering member 7, 9 were to be defective, for example if the link 7 or the button 9 are broken.
  • the user or the installer puts the connecting member 44 in position to secure the shaft 4, the pinion 43 and the support 24.
  • the rotation of the tube 1 is blocked by rolling up the fabric 3 so that its second end 30 either in the folded position, or by unrolling said canvas so that its second end 30 is in the hidden position.
  • the support 24 is then detached from the housing 2 and slightly pulled apart from the latter so as to be able to pivot it in rotation.
  • the shaft 4 is driven in rotation, which rotation makes it possible to increase or decrease the torsion of the spring 6 (first embodiment) or to move the carriage 5 in a direction of tensioning or relaxation of the spring 6 (second embodiment).
  • one or more features disclosed only in one embodiment may be combined with one or more other features disclosed only in another embodiment.
  • one or more features disclosed only in one embodiment can be generalized to the other embodiments, even if this or these features are described only in combination with other features.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP21155795.4A 2021-02-08 2021-02-08 Vorrichtung zum aufrollen eines markisentuchs Withdrawn EP4039937A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21155795.4A EP4039937A1 (de) 2021-02-08 2021-02-08 Vorrichtung zum aufrollen eines markisentuchs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21155795.4A EP4039937A1 (de) 2021-02-08 2021-02-08 Vorrichtung zum aufrollen eines markisentuchs

Publications (1)

Publication Number Publication Date
EP4039937A1 true EP4039937A1 (de) 2022-08-10

Family

ID=74561787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21155795.4A Withdrawn EP4039937A1 (de) 2021-02-08 2021-02-08 Vorrichtung zum aufrollen eines markisentuchs

Country Status (1)

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EP (1) EP4039937A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101206002B1 (ko) 2012-08-27 2012-11-29 (주)인익스 장력 조절이 가능한 롤 방충망
EP2960424A1 (de) 2014-06-26 2015-12-30 Mariton Vorrichtung zum spannen eines markisentuchs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101206002B1 (ko) 2012-08-27 2012-11-29 (주)인익스 장력 조절이 가능한 롤 방충망
EP2960424A1 (de) 2014-06-26 2015-12-30 Mariton Vorrichtung zum spannen eines markisentuchs

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