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EP3312376A1 - Rollladen - Google Patents

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Publication number
EP3312376A1
EP3312376A1 EP17198161.6A EP17198161A EP3312376A1 EP 3312376 A1 EP3312376 A1 EP 3312376A1 EP 17198161 A EP17198161 A EP 17198161A EP 3312376 A1 EP3312376 A1 EP 3312376A1
Authority
EP
European Patent Office
Prior art keywords
lateral
transverse bar
blind
magnetic coupling
coupling element
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
EP17198161.6A
Other languages
English (en)
French (fr)
Other versions
EP3312376B1 (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
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 Gibus SpA filed Critical Gibus SpA
Publication of EP3312376A1 publication Critical patent/EP3312376A1/de
Application granted granted Critical
Publication of EP3312376B1 publication Critical patent/EP3312376B1/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
    • 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
    • E06B9/24—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
    • 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
    • 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 according to the preamble of the independent claim number 1.
  • the present roller blind is intended to be advantageously employed for adjustably closing provided openings made in walls of buildings, verandas, pergolas, roofs, etc. and in particular for adjustably closing windows, doors, French windows, skylights and similar window/door items.
  • the blind, object of the present invention is therefore inserted in the industrial field of production of windows/doors/shutters, or also in the field of production of sun-protection blinds, in the field of mosquito screens or similar applications.
  • Roller blinds are known on the market for closing window/door openings (such as windows, doors or 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 at its interior houses a roller, on which a flexible fabric is susceptible of being wound and unwound.
  • window/door openings such as windows, doors or French windows
  • a rolling-shutter box which is fixed to a building wall or to a ceiling above the opening to be closed and at its interior houses a roller, on which a flexible fabric is susceptible of being wound and unwound.
  • the fabric of the blind usually has rectangular shape and is provided with an upper edge fixed to the roller and with a lower edge fixed to a transverse bar aimed to stretch the fabric itself.
  • the transverse bar comprises two lateral ends slidably coupled to the respective lateral guides.
  • Each lateral guide is obtained with a corresponding aluminum profile of 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 made, in which the corresponding lateral end 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 drivable, 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 which 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 from the base terminals when it is necessary to wind the fabric again 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 end of the transverse bar.
  • the shaped channel of the lateral end is provided on the lower part with an inlet opening, in order to allow the pin of the coupling lever to enter into the shaped channel, and is provided at the upper part with an outlet opening in order to allow the pin of the coupling lever to exit from the shaped channel itself.
  • the pin of the coupling lever enters into the shaped channel of the corresponding end until it reaches a specific stop section, in which the pin is constrained following the action of the spring that acts on the coupling lever, in a manner such that the latter is engaged with the corresponding lateral end in order to lock the transverse bar to the base ends of the lateral guides.
  • the transverse bar In order to wind the fabric again, the transverse bar is controlled to descend until the pin of the coupling lever exits from the outlet opening of the shaped channel, by bending the aforesaid flexible tongue, in a manner so as to release the coupling lever from the corresponding lateral end of the transverse bar. Subsequently, the transverse bar is controlled to 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, necessitating the execution of repair operations that require dismantling the locking device, the corresponding lateral guide and the transverse bar of the blind.
  • the problem underlying the present invention is to provide a roller blind which is structurally simple and inexpensive to make.
  • reference number 1 overall indicates a 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 tilted, made for example on the roof of a pergola.
  • the support frame 2 of the blind 1 advantageously comprises a rolling-shutter box 3 intended to be positioned to delimit a head side at the opening A, and susceptible of being fixed to a wall of the load-bearing element preferably by means of anchorage brackets.
  • the fabric 4 can be intended for making a shading screen for filtering the sunlight or for making a mosquito screen.
  • the fabric 4 can be dedicated to closing the opening A in order to protect an internal or underlying area from the sun, from the wind, from the rain or, more generally, from weathering agents.
  • the fabric 4 as a function of its different applications, can be made of synthetic or natural material fabric and can have the form of a mesh 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 placed 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 preferably has rectangular shape 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 the fabric 4.
  • the fabric 4 is provided with two lateral edges 7, each provided with a flexible engagement flap 8 that is 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 and a second side of the blind 1 directed in opposite direction with respect to 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 leaned 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 screws 11.
  • 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 transverse section with preferably rectangular shape and is provided with an external surface 12 which comprises a first lateral side 13 directed towards the first lateral side 13 of the other lateral guide 5, and a second lateral side 14 directed in a direction substantially opposite with respect to the corresponding first lateral side 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 side 13 with the second lateral side 14, and preferably orthogonal to such lateral sides 13, 14.
  • each lateral guide 5 is provided with another frontal face 15' (it too extended to connect the first lateral side 13 with the second lateral side 14), directed in the direction opposite the aforesaid frontal face 15 and preferably parallel to the latter.
  • each lateral guide 5 faces the first side of the blind 1 and is substantially parallel to the lying plane of the latter.
  • the other frontal face 15' of each lateral guide 5 faces the second side of the blind 1.
  • a longitudinal opening 17 is made that is parallel to the extension direction Y of the lateral guide 5 itself.
  • the transverse bar 6 is slidably engaged in such longitudinal opening 17.
  • each lateral guide 5 comprises at least one elongated profile extended longitudinally according to the extension direction Y between the first end 9 and the second end 10, made for example of aluminum and in particular by means of extrusion.
  • each lateral guide 5 comprises a support profile 18 intended to be fixed to the load-bearing element, e.g. by means of the anchorage screws 11, and a guide profile 19 mechanically fixed to the aforesaid support profile and on which the corresponding longitudinal opening 17 is obtained.
  • each lateral guide 5 comprises a single elongated profile made of a single body, e.g. by means of extrusion.
  • each lateral guide 5 can comprise an end cap, for example made of plastic material, placed to close the second end 10 of the lateral guide 5 itself.
  • the blind 1 comprises two rails 20, each of which mechanically associated with the corresponding lateral guide 5 and provided with a longitudinal groove adapted slidably receive the engagement flap 8 of the corresponding lateral edge 7 of the fabric 4.
  • each lateral guide 5 is provided with an internal seat 21 connected to the longitudinal opening 17 of the lateral guide 5 itself and in which the corresponding rail 20 is housed in retention relationship, positioned with its longitudinal groove towards the longitudinal opening 17.
  • each engagement flap 8 of the fabric 4 is obtained with a flexible toothing laterally projecting from the corresponding lateral edge 7, suitably reinforced with support strip.
  • the rail 20 has elongated box shape, advantageously obtained via extrusion in plastic material, e.g. with quadrangular form section, with one side partially open with the longitudinal groove through which the fabric 4 passes.
  • 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 ends 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 direction as the frontal faces 15, in particular facing - together with the latter - the first side of the blind 1.
  • the transverse bar 6 is provided with another front face 23' directed in the direction opposite the aforesaid front face 23 and preferably parallel to the latter.
  • Such other front face 23' is directed in the same direction as the other frontal faces 15' of the lateral guides 5, in particular facing - together with these other frontal faces 15' - the second side of the blind 1.
  • the transverse bar 6 comprises a metal section 6', e.g. of extruded aluminum.
  • the lateral ends 22 of the transverse bar 6 are preferably made of plastic material, are placed to laterally close the metal section 6' of the transverse bar 6 itself and are fixed to the metal section 6' by means of connections screws (not illustrated), for example.
  • each lateral end 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 D1 of the guide tab 17 is smaller than the width D2 of the longitudinal opening 17 of the lateral guide 5 in order to define a sliding clearance.
  • the blind 1 comprises driving means (not illustrated in the enclosed figures) mechanically connected to the take-up roller and arranged so 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 driving 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 an articulation to the shaft of the roller).
  • the fabric 4 of the blind 1 is movable from 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 to outside the rolling-shutter box 3 to close the opening A (as illustrated in the example of figure 1a ).
  • the blind 1 comprises at least one first magnetic coupling element 25 fixed to the corresponding lateral guide 5 and in particular only 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 to the transverse bar 6 and 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 the latter.
  • the second magnetic coupling element 26 is positioned in front of the first magnetic coupling element 25 and substantially faces 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 lateral 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 two second magnetic coupling elements 26 are separate from each other and arranged at the respective lateral ends 22 of the transverse bar 6.
  • the two second magnetic coupling elements 26 are made in only one element fixed to the transverse bar 6 with the two lateral appendages 27 extended in front of the corresponding lateral guides 5.
  • the first magnetic coupling element 25 is provided with one or more first magnetic bodies 28 and the lateral appendage 27 of the second magnetic coupling element 26 is provided with one or more second magnetic bodies 29.
  • magnetic body it is intended a body which, due to its own magnetism or due to induced magnetism (induced by an external magnetic field), is capable of attracting objects of ferromagnetic material.
  • the first magnetic coupling element 25 comprises at least one first row of multiple first magnetic bodies 28 and the second magnetic coupling element 26 comprises at least one second row of multiple second magnetic bodies 29 which, when the transverse bar 6 is in the closed position, interact via magnetic attraction with the corresponding first magnetic bodies 28 of the aforesaid first row, in particular being arranged in front of such corresponding first magnetic bodies 28.
  • the first magnetic body 28 comprises a first permanent magnet (such as a first magnet)
  • the second magnetic body 29 comprises a second permanent magnet (such as a second magnet) with polarity opposite that of the first permanent magnet of the corresponding first magnetic body 28 to which it is magnetically attracted when the transverse bar 6 is in closed position.
  • the first magnetic body 28 comprises a permanent magnetic body and the second magnetic body 29 comprises a body made of ferromagnetic material, or vice versa.
  • 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 screws (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 projectingly extends from the frontal face 15 of the corresponding lateral guide 5.
  • the first magnetic coupling element 25 is embedded in the frontal face 15 of the corresponding lateral guide 5, in particular being positioned with its external face 25' coplanar with the frontal face 15 itself.
  • the lateral appendage 27 of the second magnetic coupling element 26 is extended, according to the second extension direction Z, beyond the corresponding lateral end 22 of the transverse bar 6, in a manner so as to face the frontal face 15 of the corresponding lateral guide 5, and to face in front of 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 figures) and/or by means of gluing.
  • the second magnetic coupling element 26 comprises an attachment portion 30 fixed to the front face 23 of the transverse bar 6 and projectingly extended from such front face 23.
  • Fixed to the attachment portion 30 is the corresponding lateral appendage 28, which is projectingly extended from the attachment portion 30 parallel to the second extension direction Z, extended in front of the frontal face 15 of the corresponding lateral guide 5.
  • the lateral appendage 27 is integrally made with the attachment portion 30. Otherwise, the lateral appendage 27 and the attachment portion 30 are made in a separate manner and integrally fixed to each other.
  • 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.
  • a passage cavity 32 is made in which the corresponding first magnetic coupling element 25 is inserted when the transverse bar 6 is in closed position, in a manner so as to allow the lateral appendage 27 to be arranged in front of the first magnetic coupling element 25 without impacting the latter and preventing the movement of the transverse bar 6 itself.
  • the lateral appendage 27 of the second magnetic coupling element 26 is connected to the corresponding attachment portion 30 with a substantially elbow-shaped connector that advantageously delimits the aforesaid passage cavity 32.
  • the second magnetic body 29 of the second magnetic coupling element 26 is fixed to the lateral appendage 27 by means of for example third fixing screws (not illustrated) and/or gluing. Otherwise, the second magnetic body 29 is integrally made with the lateral appendage 27.
  • 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 end 22 of the frontal bar 6 is inserted in the longitudinal opening 17 of the corresponding lateral guide 5.
  • the first magnetic coupling element 25 comprises a first protection casing 33 placed to cover the first magnetic body 28, 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 second magnetic body 29, preferably defining the internal face 31 of the lateral appendage 27 of the second magnetic coupling element 26 itself.
  • the aforesaid protection casings 33, 34 are advantageously adapted to protect the magnetic bodies 28, 29 from external agents (such as moisture, etc.) in order to prevent the possible degradation thereof (due for example to oxidation).
  • first magnetic coupling elements 25 and the second magnetic coupling elements 26 are respectively arranged on the frontal faces 15 of the lateral guides 5 and on the front face 23 of the transverse bar 6.
  • first magnetic coupling elements 25 and the second magnetic coupling elements 26 can be respectively arranged on the other frontal faces 15' of the lateral guides 5 and on the other front face 23' of the transverse bar 6.
  • the take-up roller In operation, in order to move the fabric 4 of the blind 1 from the collected position to the extended position, the take-up roller is driven by the driving means for the blind 1 to rotate in a first rotation direction in order to unwind the fabric 4 from the take-up roller itself. Consequently, 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 is thrust towards the second ends 10 of the lateral guides 5 by suitable actuation means arranged within the lateral guides 5 and comprising for example 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 document.
  • each second magnetic coupling element 26 is attracted via magnetic attraction against the corresponding first magnetic coupling element 25 (preferably coming into contact with the latter) in a manner so as to retain the transverse bar 6 locked to the guides 5 at the second ends 10 thereof, in order to fix the fabric 4 in the extended position.
  • the magnetic interaction between the first magnetic body 28 and the corresponding second magnetic body 29 determines a magnetic field having direction, at the magnetic bodies 28, 29 themselves, substantially orthogonal to the lying plane of the blind 1 in a manner so as to attract the magnetic bodies 28, 29 towards each other.
  • the take-up roller is driven to rotate in a second rotation direction in order to wind the fabric again on itself.
  • the fabric 4 exerts a separation force on the transverse bar 6 such to overcome the magnetic attraction between the corresponding first and second magnetic coupling elements 25, 26, in a manner so as to allow the transverse bar 6 to be moved away from the second ends 10 of the lateral guides 5, sliding along the latter so as to allow the fabric 4 to be wound again around the take-up roller.
  • the electric motor of the driving means for the blind 1 is arranged for generating a starting torque, exerted on the take-up roller, which generates a separation force on the transverse bar 6 greater than the magnetic attraction force between the corresponding first and second magnetic coupling elements 25, 26, allowing the second magnetic coupling elements 26 to move away from the corresponding first magnetic coupling elements 25 in order to allow the movement of the transverse bar 6 and of the fabric 4.
  • the invention thus conceived therefore attains the pre-established objects.
  • the arrangement of the first magnetic coupling elements 25 on the lateral guides 5 and of the second magnetic coupling elements 26 on the transverse bar 6 allows reliably locking the transverse bar 6 in the closed position by means of an arrangement of the blind 1 that is simple and inexpensive to make, in particular allowing the easy application of the magnetic coupling elements 25, 26 even on pre-existing blinds models without having to execute complex redesigning of the latter.

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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)
  • Blinds (AREA)
  • Tents Or Canopies (AREA)
EP17198161.6A 2016-10-24 2017-10-24 Rollladen Active EP3312376B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102016000107049A IT201600107049A1 (it) 2016-10-24 2016-10-24 Tenda ad avvolgimento

Publications (2)

Publication Number Publication Date
EP3312376A1 true EP3312376A1 (de) 2018-04-25
EP3312376B1 EP3312376B1 (de) 2019-08-14

Family

ID=58010278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17198161.6A Active EP3312376B1 (de) 2016-10-24 2017-10-24 Rollladen

Country Status (2)

Country Link
EP (1) EP3312376B1 (de)
IT (1) IT201600107049A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3739143A1 (de) 2019-05-16 2020-11-18 WAREMA Renkhoff SE Markise mit seitlichen führungsschienen und verstärkungsprofil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514494U (ja) * 1991-08-01 1993-02-26 文化シヤツター株式会社 逆巻き防止装置
DE29513432U1 (de) * 1995-08-22 1995-11-16 Ledwon, Anton, 51145 Köln Vorrichtung zum Halten eines Rollostoffes an einem Fenster o.dgl.
DE202007014398U1 (de) * 2007-10-13 2008-01-03 B & T Exact Gmbh Rollo
KR20090003262U (ko) * 2007-10-04 2009-04-08 남이식 권취식 방충망의 자석 장착구조
DE202011001346U1 (de) * 2011-01-11 2011-04-21 Iversen, Hans Fensteranordnung mit Magnethalter für abhängbare Fensterabdeckung
GB2479976A (en) * 2010-04-27 2011-11-02 Richard Molesworth Blind and curtain fixture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0514494U (ja) * 1991-08-01 1993-02-26 文化シヤツター株式会社 逆巻き防止装置
DE29513432U1 (de) * 1995-08-22 1995-11-16 Ledwon, Anton, 51145 Köln Vorrichtung zum Halten eines Rollostoffes an einem Fenster o.dgl.
KR20090003262U (ko) * 2007-10-04 2009-04-08 남이식 권취식 방충망의 자석 장착구조
DE202007014398U1 (de) * 2007-10-13 2008-01-03 B & T Exact Gmbh Rollo
GB2479976A (en) * 2010-04-27 2011-11-02 Richard Molesworth Blind and curtain fixture
DE202011001346U1 (de) * 2011-01-11 2011-04-21 Iversen, Hans Fensteranordnung mit Magnethalter für abhängbare Fensterabdeckung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3739143A1 (de) 2019-05-16 2020-11-18 WAREMA Renkhoff SE Markise mit seitlichen führungsschienen und verstärkungsprofil

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