EP3375970A1 - Rollladen und verfahren zum betrieb des rollladens - Google Patents

Rollladen und verfahren zum betrieb des rollladens Download PDF

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Publication number
EP3375970A1
EP3375970A1 EP18162288.7A EP18162288A EP3375970A1 EP 3375970 A1 EP3375970 A1 EP 3375970A1 EP 18162288 A EP18162288 A EP 18162288A EP 3375970 A1 EP3375970 A1 EP 3375970A1
Authority
EP
European Patent Office
Prior art keywords
magnet
magnetic coupling
transverse bar
coupling element
blind
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
EP18162288.7A
Other languages
English (en)
French (fr)
Other versions
EP3375970B1 (de
Inventor
Lorenzo Danieli
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.)
Gibus SpA
Original Assignee
Gibus SpA
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Filing date
Publication date
Application filed by Gibus SpA filed Critical Gibus SpA
Publication of EP3375970A1 publication Critical patent/EP3375970A1/de
Application granted granted Critical
Publication of EP3375970B1 publication Critical patent/EP3375970B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • 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
    • 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
    • E06B9/24—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
    • E06B9/52—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
    • E06B9/58—Guiding devices
    • 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
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/86—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against unauthorised opening
    • 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
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B2009/801—Locking arrangements
    • E06B2009/805—Locking arrangements located on or in the guides

Definitions

  • the present invention regards a roller blind and a method for operating said roller blind.
  • the present roller blind is intended to be advantageously employed for adjustably closing openings made in walls of buildings, verandas, pergolas, roofs, etc. and in particular for the adjustable closing of windows, doors, French windows, skylights and similar doors/windows/shutters.
  • the blind, object of the present invention is therefore inserted in the industrial field of production of doors/windows/shutters, also in the field of production of blinds for sun protection, in the field of mosquito netting or similar applications.
  • Roller blinds are known on the market for closing openings of doors/windows/shutters (such as French windows) provided with a rolling-shutter box which is fixed to a building wall or to a ceiling above the opening to be closed and houses a roller therein on which a flexible fabric is susceptible to be wound and unwound.
  • doors/windows/shutters such as French windows
  • a rolling-shutter box which is fixed to a building wall or to a ceiling above the opening to be closed and houses a roller therein on which a flexible fabric is susceptible to be wound and unwound.
  • the fabric usually has rectangular form and is provided with an upper edge fixed to the roller and with a lower edge fixed to a transverse bar aimed to stretch out the fabric itself.
  • the blind comprises two lateral guides vertically arranged along the corresponding sides of the opening and to which the transverse bar is slidably constrained.
  • the transverse bar comprises two lateral terminations slidably coupled to the respective lateral guides.
  • Each lateral guide is obtained with a corresponding metal section (e.g. made of aluminum) with rectangular section, internally hollow and provided with an internal side (facing the internal side of the other lateral guide) on which a longitudinal slit is obtained, in which the corresponding lateral termination of the transverse bar is slidably inserted.
  • a metal section e.g. made of aluminum
  • rectangular section internally hollow and provided with an internal side (facing the internal side of the other lateral guide) on which a longitudinal slit is obtained, in which the corresponding lateral termination of the transverse bar is slidably inserted.
  • each lateral guide is longitudinally extended between an upper end, fixed to the rolling-shutter box, and a lower end closed by a base terminal fixed to the floor at the lower edge of the opening.
  • the roller of the blind is actuatable, typically by a motor, to rotate in order to move the fabric between a collected position, in which the fabric is wound around the roller with the transverse bar arranged in abutment against the rolling-shutter box, and an extended position, in which the fabric is unwound from the roller to close the opening and the transverse bar is arranged at the base terminals placed at the lower ends of the lateral guides.
  • blinds are known on the market that are provided with locking devices adapted to lock the transverse bar to the base terminals when the fabric is brought into the extended position, and to unlock the transverse bar form the base terminals when it is necessary to once again wind the fabric around the roller in order to bring the fabric into the collected position.
  • each locking device comprises a coupling lever which is hinged to the corresponding base terminal and comprises a first arm fixed to a spring constrained to the base terminal itself.
  • the coupling lever comprises a second arm, provided at its free end with a pin susceptible of being slidably inserted within a shaped channel made in the corresponding lateral termination of the transverse bar.
  • the shaped channel of the lateral termination is on the lower part provided with an inlet opening, in order to allow the pin of the coupling lever to enter into the shaped channel, and is on the upper part provided with an outlet opening in order to allow the pin of the coupling lever to exit from the shaped channel itself.
  • the lateral termination of the transverse bar is provided with a flexible tongue placed to close the outlet opening of the shaped channel and arranged for preventing the pin of the coupling lever from entering into the shaped channel through such outlet opening, and arranged for being bent towards the exterior of the shaped channel in order to allow the pin to exit from the shaped channel through the outlet opening itself.
  • the pin of the coupling lever enters into the shaped channel of the corresponding termination up to reaching a specific stop section, in which the pin is constrained following the action of the spring which acts on the coupling lever, in a manner such that the latter is engaged with the corresponding lateral termination in order to lock the transverse bar at the base terminations of the lateral guides.
  • the transverse bar is controlled to extend until the pin of the coupling lever exits from the outlet opening of the shaped channel, bending the aforesaid flexible tongue, in a manner such to release the coupling lever from the corresponding lateral termination of the transverse bar. Subsequently, the transverse bar is controlled to re-ascend in order to allow the winding of the fabric around the roller of the blind.
  • a further drawback of the above-described blind of known type is due to the fact that the locking device tends to be jammed, in particular if impacted in an accidental manner, requiring the execution of repair operations that require dismantling the locking device, the corresponding lateral guide and the transverse bar of the blind.
  • roller blinds have been developed and introduced into the market that are provided with magnetic anchoring means for locking the transverse bar to the lateral guides when the fabric is brought into the extended position.
  • the patent DE 3232820 describes a roller blind provided with magnetic anchorage means comprising a pair of magnetizable steel strips, each of which fixed to the corresponding lateral guide, and a pair of permanent magnets, each of which fixed to the lateral termination of the transverse bar and adapted to interact, via magnetic attraction, with the corresponding steel strip in order to lock the transverse bar when the fabric movement motor is stopped, in particular when the fabric is in the extended position.
  • a first drawback is due to the fact that the magnetic interaction between the permanent magnets and the magnetizable steel strips is not sufficient for ensuring a stable locking of the transverse bar, for example allowing movements of the latter following the action of wind on the extended fabric.
  • a further drawback is due to the fact that the magnetic anchorage means of the blind described in DE 3232820 are not able to ensure the correct positioning of the transverse bar when the fabric is extended, due to further factors that impact the positioning of the transverse bar such as friction, ballast applied to the frontal bar, quantity of motion of the movable parts of the blind.
  • a further drawback is due to the fact that the magnetic anchorage means of the blind described in DE 3232820 do not ensure a suitable tensioning of the fabric.
  • the problem underlying the present invention is to provide a roller blind and a method for operating said blind which ensure a stable locking of the transverse bar in the closed position.
  • Another object of the present invention is to provide a roller blind which allows suitably maintaining the fabric in extended position under tension.
  • Another object of the present invention is to provide a roller blind which is structurally simple and inexpensive to make.
  • Another object of the present invention is to provide a roller blind which is not subjected to jamming of the movement of the transverse bar.
  • Another object of the present invention is to provide a method for operating a roller blind which allows stably locking the transverse bar in the closed position.
  • reference number 1 indicates the roller blind, object of the present invention.
  • the present roller blind 1 is intended to carry out the adjustable closing of an opening A made on a load-bearing structure, such as a building wall, a veranda, a loggia, a terrace, a pergola, a roof or other similar structures.
  • a load-bearing structure such as a building wall, a veranda, a loggia, a terrace, a pergola, a roof or other similar structures.
  • the blind 1 is intended to close an opening A with substantially vertical plane, for example made on a building wall.
  • the blind 1 is intended to close an opening A with substantially horizontal plane or sloped, for example on the roof of a pergola.
  • the blind 1 comprises a support frame 2 intended to be fixed to a load-bearing element.
  • the load-bearing element comprises a wall in which the opening A is obtained.
  • the load-bearing element comprises for example two or more columns of the pergola and/or a wall against which the pergola itself is abutted.
  • the support frame 2 of the blind 1 advantageously comprises a rolling-shutter box 3 intended to be positioned to delimit a head side of the opening A, and susceptible of being fixed to a wall of the load-bearing element preferably by means of anchorage brackets.
  • the blind 1 also comprises a take-up roller (not illustrated in the enclosed figures) rotatably constrained to the support frame 2, advantageously housed within the rolling-shutter box 3, and provided with a preferably substantially horizontal rotation axis X.
  • a take-up roller (not illustrated in the enclosed figures) rotatably constrained to the support frame 2, advantageously housed within the rolling-shutter box 3, and provided with a preferably substantially horizontal rotation axis X.
  • the blind 1 also comprises a flexible fabric 4, which is susceptible of being wound around the take-up roller and preferably passes through a passage slit of the rolling-shutter box 3 in order to enter into and exit from the latter.
  • the fabric 4 can be intended to make a shading screen for filtering sunlight or to make a mosquito netting. Generally, the fabric 4 can be dedicated to close the opening A in order to protect an internal or underlying area from the sun, from wind, from rain, or more generally from weathering agents.
  • the fabric 4 as a function of its different applications, can be made of a synthetic or natural material and can have the form of a net or have a continuous surface of shading, filtering or transparent type.
  • the blind 1 also comprises two lateral guides 5 extended parallel to each other and side-by-side and advantageously arranged to delimit corresponding sides of the opening A. Between the lateral guides 5, the fabric 4 is susceptible of sliding, following its winding and unwinding around the take-up roller.
  • the fabric 4 has a preferably rectangular form and is provided, in a manner per se known to the man skilled in the art, with a first edge fixed to the take-up roller and with a second edge fixed to a transverse bar 6 arranged parallel to the take-up roller and aimed to stretch out the fabric 4.
  • the fabric 4 is provided with two lateral edges, each provided with a flexible engagement flap guided to slide along the corresponding lateral guide 5 during the winding and unwinding of the fabric 4 itself.
  • the lateral guides 5 and the transverse bar 6 of the blind 1 identify a lying plane of the blind 1 itself, in particular such lying plane identifying a first side L1 and a second side L2 of the blind 1 directed in senses opposite each other.
  • each lateral guide 5 is longitudinally extended according to a respective first extension direction Y substantially orthogonal to the rotation axis X of the take-up roller.
  • each lateral guide 5 is extended along the corresponding first extension direction Y between a first end 9 and an opposite second end 10.
  • the first end 9 of each lateral guide 5 is positioned at the take-up roller, and preferably abutted against the rolling-shutter box 3 of the blind 1, the second end 10 being arranged at a greater distance from the take-up roller with respect to the first end 9.
  • the two lateral guides 5 are intended to be fixed to the load-bearing element (in which the opening A itself is obtained) for example by means of anchorage means.
  • the two lateral guides 5 are intended to be fixed, at the first ends 9 thereof, to the rolling-shutter box 3, and are intended to be supported, at the second ends 10, by columns of the load-bearing element.
  • each lateral guide 5 has cross section with preferably rectangular shape and is provided with an external surface 12 which comprises a first lateral flank 13 directed towards the first lateral flank 13 of the other lateral guide 5, and with a second lateral flank 14 directed in a direction substantially opposite with respect to the first lateral flank 13 and preferably parallel to the latter.
  • the external surface 12 of each lateral guide 5 is provided with a frontal face 15 extended to connect the first lateral flank 13 with the second lateral flank 14, and preferably orthogonal to such lateral flanks 13, 14.
  • each lateral guide 5 is provided with another frontal face (also extended to connect the first lateral flank 13 with the second lateral flank 14), directed in the sense opposite the aforesaid frontal face 15 and preferably parallel to the latter.
  • the frontal face 15 of each lateral guide 5 faces the first side L1 of the blind 1 and is substantially parallel to the lying plane of the latter.
  • the other frontal face of each lateral guide 5 faces the second side L2 of the blind 1.
  • a longitudinal opening 17 is obtained that is parallel to the first extension direction Y of the lateral guide 5 itself and in which the transverse bar 6 is slidably engaged.
  • each lateral guide 5 comprises at least one elongated section extended according to the first extension direction Y between the first end 9 and the second end 10, for example made of aluminum and in particular by means of extrusion.
  • each lateral guide 5 can comprise an end cap 18, e.g. made of plastic material, placed to close the second end 10 of the lateral guide 5 itself.
  • the transverse bar 6 of the blind 1, fixed to the second edge of the fabric 4, is longitudinally extended along a second extension direction Z parallel to the rotation axis X of the take-up roller, between two lateral terminations 22 thereof slidably engaged in the longitudinal openings 17 of the corresponding lateral guides 5.
  • the transverse bar 6 is provided with a front face 23 parallel to the frontal faces 15 of the lateral guides 5 and preferably coplanar to such frontal faces 15.
  • the front face 23 of the transverse bar 6 is directed in the same sense as the frontal faces 15 facing in particular together with the latter on the first side L1 of the blind 1.
  • the transverse bar 6 comprises a metal section for example made of extruded aluminum.
  • the lateral terminations 22 of the transverse bar 6 are preferably made of plastic material, are placed as a lateral closure of the metal section of the transverse bar 6 itself and are fixed to the metal section by means of connection screws (not illustrated), for example.
  • each lateral termination 22 of the transverse bar 6 is provided with a guide tab 24 laterally projecting as an extension of the transverse bar 6 itself according to the second extension direction Z and slidably inserted in the longitudinal opening 17 of the corresponding lateral guide 5.
  • the thickness of the guide tab 24 is smaller than the width of the longitudinal opening 17 of the lateral guide 5 in order to define a sliding clearance.
  • the blind 1 comprises actuation means (not illustrated in the enclosed figures) mechanically connected to the take-up roller and arranged to drive the latter to rotate around its rotation axis X in order to unwind or wind the fabric 4 around the take-up roller itself.
  • the actuation means are of motorized type (comprising in particular an electric motor), or of manual type (comprising in particular a crank obtained with a control rod engaged through a joint to the shaft of the roller).
  • the fabric 4 of the blind 1 is movable by the take-up roller between a collected position, in which the fabric 4 is wound around the take-up roller (as illustrated in the example of figure 1b ), and an extended position, in which the fabric 4 is unwound from the take-up roller outside the rolling-shutter box 3 to close the opening A (as illustrated in the example of figure 1a ).
  • the transverse bar 6 is movable between an open position, in which the fabric 4 is in the collected position and the transverse bar 6 is placed at the first ends 9 of the lateral guides 5, and a closed position, in which the fabric 4 is in the extended position and the transverse bar 6 is positioned at the second ends 10 of the lateral guides 5.
  • the blind 1 comprises at least one first magnetic coupling element 25 fixed to the corresponding lateral guide 5 and positioned at the second end 10 of the lateral guide 5 itself.
  • the blind 1 also comprises at least one second magnetic coupling element 26, which is fixed at the respective lateral termination of the transverse bar 6 and, when the transverse bar 6 is arranged in the closed position, is engaged via magnetic attraction to the first magnetic coupling element 25 in order to retain the transverse bar 6 in the closed position locked to the lateral guide 5.
  • the second magnetic coupling element 26 is positioned in front of the first magnetic coupling element 25 and substantially facing the latter.
  • the blind 1 comprises a pair of the aforesaid first magnetic coupling elements 25, each fixed to the corresponding lateral guide 5, and a pair of aforesaid second magnetic coupling elements 26, each fixed to the transverse bar 6 and susceptible of interacting via magnetic attraction with the corresponding first magnetic coupling element 25 in order to retain the transverse bar 6 locked in the closed position.
  • the first magnetic coupling element 25 (integral with the lateral guide 5) comprises a first pair of magnets 25A, 25B and the second magnetic coupling element 26 (integral with the transverse bar 6) comprises at least one second pair of magnets 26A, 26B.
  • the first pair of magnets 25A, 25B of the first magnetic coupling element 25 comprises a first magnet 25A and a second magnet 25B with opposite polarity with respect to each other
  • the second pair of magnets 26A, 26B of the second magnetic coupling element 26 comprises a third magnet 26A and a fourth magnet 26B in turn with opposite polarity with respect to each other.
  • first magnet 25A and the second magnet 25B of the first magnetic coupling element 25 are directed with opposite poles on the first side L1 of the blind 1.
  • first magnet 25A and the second magnet 25B respectively have the south pole and the north pole directed towards the first side L1 of the blind 1.
  • the third magnet 26A and the fourth magnet 26B of the second magnetic coupling element 26 are directed with opposite poles towards the second side L2 of the blind 1.
  • the third magnet 26A and the fourth magnet 26B respectively have the north pole and the south pole directed towards the second side L2 of the blind 1.
  • the first magnet 25A and the second magnet 25B of the first magnetic coupling element 25 are arranged one after the other according to the first extension direction Y of the corresponding lateral guide 5.
  • the third magnet 26A and the fourth magnet 26B are arranged one after the other according to the first extension direction Y.
  • the third magnet 26A of the second magnetic coupling element 26 is coupled in magnetic retention relationship with the first magnet 25A of the first magnetic coupling element 25 and is coupled in magnetic repulsion relationship with the second magnet 25B of the first magnetic coupling element 25 itself.
  • the fourth magnet 26B of the second magnetic coupling element 26 is coupled in magnetic retention relationship with the second magnet 25B of the first magnetic coupling element 25 and is coupled in magnetic repulsion relationship with the first magnet 25A of the first magnetic coupling element 25 itself.
  • the magnetic forces of attraction and repulsion of the magnets 25A, 25B, 26A, 26B of the blind 1 according to the invention act on the magnetic coupling elements 25, 26 by pushing them towards a point of equilibrium in order to retain the two magnetic coupling elements 25, 26 together, so as to lock the transverse bar 6 to the lateral guides 5.
  • the forces of repulsion between the third magnet 26A and the second magnet 25B and between the fourth magnet 26B and the first magnet 25A tend to bring the third magnet 26A and the fourth magnet 26B of the second magnetic coupling element 26 across therefrom respectively back to the first magnet 25A and to the second magnet 25B of the first magnetic coupling element 25, in a manner such to facilitate the interaction of magnetic attraction between the third magnet 26A and the first magnet 25A and between the fourth magnet 26B and the second magnet 25B, ensuring a stable engagement between the magnetic coupling elements 25, 26 which allows bringing the transverse bar 6 back into the closed position when the latter is subjected to specific position deviations.
  • the magnetic forces of repulsion between third magnet 26A and second magnet 25B and between fourth magnet 26B and first magnet 25A interact with the magnetic forces of attraction between third magnet 26A and first magnet 25A and between fourth magnet 26B and second magnet 25B in order to ensure a stable locking of the transverse bar 6 in the closed position.
  • the second magnetic coupling element 26 when the transverse bar 6 is in closed position, the second magnetic coupling element 26 is arranged aligned with the corresponding first magnetic coupling element 25 according to an alignment direction W substantially orthogonal to the lying plane of the blind and hence orthogonal to the first extension direction Y of the lateral guide 5 and to the second extension direction Z of the transverse bar 6. More in detail, the third magnet 26A and the fourth magnet 26B of the second magnetic coupling element 26 are respectively arranged in front of the first magnet 25A and in front of the second magnet 25B of the first magnetic coupling element 25 according to the aforesaid alignment direction W.
  • the third magnet 26A of the second magnetic coupling element 26 has one pole thereof directed towards an opposite pole of the first magnet 25A of the first magnetic coupling element 25, in a manner such to generate a magnetic interaction of attraction between such magnets 26A, 25A.
  • the third magnet 26A has the north pole directed towards the south pole of the first magnet 25A.
  • the fourth magnet 26B of the second magnetic coupling element 26 has one pole thereof directed towards an opposite pole of the second magnet 25B of the first magnetic coupling element 25, in a manner such to generate a magnetic interaction of attraction between such magnets 26B, 25B.
  • the fourth magnet 26B has the south pole directed towards the north pole of the second magnet 25B.
  • the magnets 25A, 25B, 26A, 26B of the magnetic coupling elements 25, 26 are arranged for generating magnetic forces defining a resultant force acting on the transverse bar 6 in closed position, and adapted to push the transverse bar 6 away from the take-up roller, maintaining the fabric 4 taut between the take-up roller and the transverse bar 6 itself.
  • the electric motor of the blind 1 actuation means is arranged with an end stop for unwinding the fabric 4 which positions the transverse bar 6 before (towards the take-up roller) the point of equilibrium of the magnets 25A, 25B, 26A, 26B (for example several millimeters before), in a manner such that the magnetic forces generated by the magnets 25A, 25B, 26A, 26B, pushing the second magnetic coupling element 26 towards such point of equilibrium, also push the transverse bar 6 towards such point of equilibrium, moving away from the take-up roller in order to stretch out the fabric 4 of the blind 1.
  • the first magnetic coupling element 25 comprises multiple first pairs of magnets 25A, 25B (e.g. two) arranged side-by-side each other according to a direction parallel to the second extension direction Z of the transverse bar 6, and the second magnetic coupling element 26 comprises multiple second pairs of magnets 26A, 26B (e.g. two) side-by-side each other along the second extension direction Z itself.
  • the second pairs of magnets 26A, 26B of the second magnetic coupling element 26 are coupled to the corresponding first pairs of magnets 25A, 25B of the first magnetic coupling element 25.
  • each magnetic coupling element 25 and 26 comprises only one corresponding pair of magnets 25A, 25B and 26A, 26B, as illustrated for example in figure 10 .
  • each magnet 25A, 25B, 26A, 26B is obtained with a permanent magnet, such as a first magnet.
  • each magnet 25A, 25B, 26A, 26B is made of a single body.
  • each magnet 25A, 25B, 26A, 26B comprises multiple separate magnetic bodies with polarity in the same sense.
  • magnet it is intended a body which, via magnetism thereof or induced (by an external magnetic field), is capable of attracting objects of ferromagnetic material.
  • the second magnetic coupling element 26 is provided with a lateral appendage 27 projectingly extended in front of the frontal face 15 of the external surface 12 of the corresponding lateral guide 5, outside of the latter.
  • Such lateral appendage 27 bears, mounted thereon, the third magnet 26A and the fourth magnet 26B which, when the transverse bar 6 is arranged in the closed position, are respectively arranged in front of the first magnet 25A and in front of the second magnet 25B of the first magnetic coupling element 25.
  • the lateral appendage 27 is at its interior provided with first seats in which the third magnet 26A and the fourth magnet 26B of the second magnetic coupling element 26 are housed.
  • the first magnetic coupling element 25 is fixed on the frontal face 15 of the external surface 12 of the corresponding lateral guide 5, for example by means of first fixing means (not illustrated in the enclosed figures) and/or by means of gluing.
  • the first magnetic coupling element 25 is provided with an external face 25' which, when the transverse bar 6 is in the closed position, faces the lateral appendage 27 of the second magnetic coupling element 26.
  • the first magnetic coupling element 25 comprises a support body 21 fixed to the corresponding lateral guide 5 and provided at its interior with second seats in which the first magnet 25A and the second magnet 25B of the first magnetic coupling element 25 itself are housed.
  • the lateral appendage 27 of the second magnetic coupling element 26 is extended, according to the second extension direction Z, beyond the corresponding lateral termination 22 of the transverse bar 6, in a manner such to face the frontal face 15 of the corresponding lateral guide 5, and to face across from the corresponding first magnetic coupling element 25 when the transverse bar 6 is in the closed position.
  • the second magnetic coupling element 26 is fixed on the front face 23 of the transverse bar 6 for example by means of second fixing screws (not illustrated in the enclosed figure) and/or by means of gluing.
  • the lateral appendage 27 of the second magnetic coupling element 26 is provided with an internal face 31 directed towards the frontal face 15 of the corresponding lateral guide 5 and arranged preferably spaced from the frontal face 15 itself.
  • the second magnetic coupling element 26 comes into contact with the first magnetic coupling element 25 following the magnetic attraction generated therebetween.
  • the internal face 31 of the lateral appendage 27 of the second magnetic coupling element 26 comes into contact with the external face 25' of the first magnetic coupling element 25, advantageously developing a friction force between the internal face 31 and the external face 25'.
  • the second magnetic coupling element 26 is coupled in contact with the first magnetic coupling element 25 following a movement of the transverse bar 6 (caused by the magnetic attraction between the coupling elements 25, 26) orthogonal to the lying plane of the blind 1 and which is advantageously allowed by the sliding clearance with which the guide tab 24 of each lateral termination 22 of the transverse bar 6 is inserted in the longitudinal opening 17 of the corresponding lateral guide 5.
  • the support body 21 of the first magnetic coupling element 25 comprises a first protection casing 33 placed to cover the first magnet 25A and the second magnet 25B, preferably defining the external face 25' of the first magnetic coupling element 25 itself.
  • the second magnetic coupling element 26 comprises a second protection casing 34 placed to cover the third magnet 26A and the fourth magnet 26B, preferably defining the internal face 31 of the lateral appendage 27 of the second magnetic coupling element 26 itself.
  • the first magnetic coupling element 25 comprises a first engagement body 28 and the second magnetic coupling element 26 comprises a second engagement body 29, which is mechanically engaged with the aforesaid first engagement body 28 when the transverse bar 6 is in closed position, in a manner such to facilitate the locking of the transverse bar 6 to the lateral guides 5 in cooperation with the above-described magnets 25A, 25B, 26A, 26B.
  • the first engagement body 28 comprises an engagement seat 28' obtained in particular on the external face 25' of the first magnetic coupling element 25.
  • the second engagement body 29 comprises an engagement tooth 29' in particular projectingly extended from the internal face 31 of the lateral appendage 27 of the second magnetic coupling element 26.
  • the engagement tooth 29' is arranged on the external face 25' of the first magnetic coupling element 25 and the engagement seat 28' is obtained on the internal face 31 of the lateral appendage 27 of the second magnetic coupling element 26.
  • the first engagement body is provided with a guide profile 30 extended towards the first end 9 of the corresponding lateral guide 5 and away from the first magnet 25A and from the second magnet 25B of the first magnetic coupling element 25 according to the aforesaid alignment direction W.
  • the guide profile 30 is arranged for acting on the second engagement body 29 when the transverse bar 6 is in movement from the closed position to the open position in order to move the second magnetic coupling element 26 away from the first magnetic coupling element 25 in order to facilitate the uncoupling of the latter, as described in detail hereinbelow.
  • the guide profile 30 is obtained in the engagement seat 28' of the first engagement body 28 and has an extension tapered from the bottom of the engagement seat 28' to the edge of the latter, in order to guide the engagement tooth 29' outside the engagement seat 28' itself when the transverse bar 6 is actuated to be moved from the closed position to the open position.
  • this acts in abutment against the external face 25' of the first magnetic coupling element 25, maintaining the latter spaced from the second magnetic coupling element 26 in order to facilitate the uncoupling thereof.
  • the engagement tooth 29' has a substantially rounded head in order to facilitate the engagement thereof to the guide profile 30 of the first engagement body 28.
  • the magnetic coupling elements 25, 26 are arranged within the corresponding lateral guide 5 of the blind 1.
  • first magnet 25A and the second magnet 25B of the first magnetic coupling element 25 are arranged in the elongated section of the corresponding lateral guide 5 and are preferably mounted on a support 32 fixed to the end cap 18 placed to close the second end 10 of the lateral guide 5 itself.
  • the first magnet 25A and the second magnet 25B are fixed to the metal section of the lateral guide 5, within the latter.
  • the third magnet 26A and the fourth magnet 26B of the second magnetic coupling element 26 are fixed to the corresponding lateral termination 22 of the transverse bar 6, for example at the guide tab 24 of the lateral termination 22 itself.
  • the take-up roller in order to move the fabric 4 of the blind 1 from the collected position to the extended position, the take-up roller is actuated by the blind 1 actuation means to rotate in a first rotation sense in order to unwind the fabric 4 from the take-up roller itself. Consequently, with reference to the example of figure 8a , the transverse bar 6 slides along the lateral guides 5 from the open position thereof (in which it is arranged at the first ends 9 of the lateral guides 5) to the closed position thereof (in which it is arranged at the second ends 10 of the lateral guides 5).
  • the transverse bar 6 falls via gravity towards the second ends 10 of the lateral guides 5.
  • the transverse bar 6 is thrust towards the second ends 10 of the lateral guides 5 by suitable driving means arranged within the lateral guides 5 and for example comprising springs connected to the transverse bar 6 by means of transmission pulleys, in a manner per se known to the man skilled in the art and therefore not described in detail in the present description.
  • the present method comprises a step of moving the second magnetic coupling element 26 close to and in front of the first magnetic coupling element 25, as illustrated in the example of figure 8b .
  • the fourth magnet 26B of the second magnetic coupling element 26 interacts in a magnetic repulsion relationship with the first magnet 25A of the first magnetic coupling element 25, in particular in a manner such to move the second magnetic coupling element 26 away from the first magnetic coupling element 25, so as to facilitate the descent of the transverse bar 6 without the latter interfering against the first magnetic coupling element 25 itself.
  • the moving away of the second magnetic coupling element 26 from the first magnetic coupling element 25 prevents the engagement tooth 29' of the second magnetic coupling element 26 from sticking against the support body 21 of the first magnetic coupling element 25.
  • the transverse bar 6 continues to advance towards the second ends 10 of the lateral guides 5.
  • the present method provides for a step of coupling the second magnetic coupling element 26 with the first magnetic coupling element 25 in order to lock the transverse bar in the closed position.
  • the second magnetic coupling element 26 is subjected to forces which tend to bring it against the first magnetic coupling element 25.
  • the second magnetic coupling element 26 is moved away from and is moved closer towards the first magnetic coupling element 25 following movements of the transverse bar 6 (caused by the aforesaid magnetic interactions between the magnets 25A, 25B, 26A, 26B) orthogonal to the lying plane of the blind 1 and which are advantageously allowed by the sliding clearance with which the guide tab 24 of each lateral termination 22 of the transverse bar 6 is inserted in the longitudinal opening 17 of the corresponding lateral guide 5.
  • the second magnetic coupling element 26 is arranged aligned in front of the first magnetic coupling element 25 in a manner such that the magnetic forces interacting with the magnets 25A, 25B, 26A, 26B of the magnetic coupling elements 25, 26 stably lock the transverse bar 6 in the closed position, as described above.
  • the magnetic interaction between the magnets 25A, 25B, 26A, 26B causes a magnetic field having direction, at the magnetic coupling elements 25, 26, substantially orthogonal to the lying plane of the blind 1 in a manner such to attract the magnetic coupling elements 25, 26 towards each other.
  • the second engagement body 29 of the second magnetic coupling element 26 is mechanically coupled to the first engagement body 28 of the first magnetic coupling element 25, in particular arranging the engagement tooth 29' within the engagement seat 28', further improving the locking stability of the transverse bar 6.
  • the actuation means stop the rotation of the take-up roller and therefore the unwinding of the fabric 4.
  • the electric motor of the actuation means stops the transverse bar 6 in extended position before (e.g. several millimeters) the second coupling element 26 reaches the point of equilibrium of the magnets 25A, 25B, 26A, 26B, such that the magnetic forces generated by the latter, by pushing the second magnetic coupling element 26 towards such point of equilibrium, also push the transverse bar 6 towards such point of equilibrium away from the take-up roller in order to stretch out the fabric 4 of the blind 1.
  • the take-up roller In order to move the fabric 4 from the extended position to the collected position, the take-up roller is actuated to rotate in a second rotation sense in order to wind the fabric 4 itself once again on the roller.
  • the fabric 4 exerts on the transverse bar 6 a separation force such to overcome the forces of magnetic attraction between the corresponding first and second magnetic coupling elements 25, 26, such to allow the transverse bar 6 to be moved away from the second ends 10 of the lateral guides 5, by sliding along the latter in order to allow the fabric 4 to be wound again around the take-up roller.
  • the second engagement body 29 of the second magnetic coupling element 26 is brought to slide on the guide profile 30 of the first engagement body 28 itself.
  • the guide profile 30 brings the second engagement body 29, and hence the second magnetic coupling element 26, to be moved away from the first magnetic coupling element 25, facilitating the uncoupling between the two magnetic coupling elements 25, 26.
  • the engagement tooth 29' exits from the engagement seat 28', coming to abut against the external face 25' of the first magnetic coupling element 25, maintaining the second magnetic coupling element 26 spaced from the latter until the two magnetic coupling elements 25, 26 are at least partially approached/fit close to each other, reducing the intensity of the magnetic forces of attraction.
  • the fourth magnet 26B of the second magnetic coupling element 26 is substantially brought in front of the first magnet 25A of the first magnetic coupling element 25, interacting in a magnetic repulsion relationship with such first magnet 25A, in particular so to move the second magnetic coupling element 26 away from the first magnetic coupling element 25.
  • This further facilitates the uncoupling of the two magnetic coupling elements 25, 26, ensuring the advancement of the transverse bar towards the open position without significant resistance generated by the magnetic coupling elements 25, 26 themselves.
  • the invention thus conceived therefore attains the pre-established objects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Blinds (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP18162288.7A 2017-03-17 2018-03-16 Rollladen und verfahren zum betrieb des rollladens Active EP3375970B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000030089A IT201700030089A1 (it) 2017-03-17 2017-03-17 Tenda ad avvolgimento e metodo di funzionamento di detta tenda ad avvolgimento

Publications (2)

Publication Number Publication Date
EP3375970A1 true EP3375970A1 (de) 2018-09-19
EP3375970B1 EP3375970B1 (de) 2019-12-04

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EP18162288.7A Active EP3375970B1 (de) 2017-03-17 2018-03-16 Rollladen und verfahren zum betrieb des rollladens

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EP (1) EP3375970B1 (de)
IT (1) IT201700030089A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109330273A (zh) * 2018-12-07 2019-02-15 上海海事大学 一种智能便捷蚊帐收放装置
EP3739143A1 (de) 2019-05-16 2020-11-18 WAREMA Renkhoff SE Markise mit seitlichen führungsschienen und verstärkungsprofil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005126952A (ja) * 2003-10-22 2005-05-19 Bunka Shutter Co Ltd 開閉装置
DE102007032079A1 (de) * 2007-07-10 2009-01-15 Webasto Ag Rollo mit Magnetverrastung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005126952A (ja) * 2003-10-22 2005-05-19 Bunka Shutter Co Ltd 開閉装置
DE102007032079A1 (de) * 2007-07-10 2009-01-15 Webasto Ag Rollo mit Magnetverrastung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109330273A (zh) * 2018-12-07 2019-02-15 上海海事大学 一种智能便捷蚊帐收放装置
EP3739143A1 (de) 2019-05-16 2020-11-18 WAREMA Renkhoff SE Markise mit seitlichen führungsschienen und verstärkungsprofil

Also Published As

Publication number Publication date
EP3375970B1 (de) 2019-12-04
IT201700030089A1 (it) 2018-09-17

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