EP3000958A1 - Volet roulant en tissu - Google Patents

Volet roulant en tissu Download PDF

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Publication number
EP3000958A1
EP3000958A1 EP15186702.5A EP15186702A EP3000958A1 EP 3000958 A1 EP3000958 A1 EP 3000958A1 EP 15186702 A EP15186702 A EP 15186702A EP 3000958 A1 EP3000958 A1 EP 3000958A1
Authority
EP
European Patent Office
Prior art keywords
bottom bar
lateral
blind
fabric
guiding
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
EP15186702.5A
Other languages
German (de)
English (en)
Other versions
EP3000958B1 (fr
Inventor
Moreno FRANCALANCI
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.)
Palagina SRL
Original Assignee
Palagina SRL
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 Palagina SRL filed Critical Palagina SRL
Publication of EP3000958A1 publication Critical patent/EP3000958A1/fr
Application granted granted Critical
Publication of EP3000958B1 publication Critical patent/EP3000958B1/fr
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
    • E06B9/58—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
    • E06B9/24—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
    • E06B9/56—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 fabric roller blind according to the preamble of the independent claim 1.
  • the present fabric roller blind is intended to be advantageously employed for adjustably closing provided building wall openings, in particular 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, or also in the field of production of sun protection fabrics, in the field of mosquito netting or for similar applications.
  • 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 bottom bar aimed to pull the fabric itself.
  • the blind comprises two lateral guideways arranged vertically along the corresponding sides of the opening, to which the bottom bar is slidably constrained.
  • the bottom bar comprises an aluminum section closed at the lateral ends by two lateral ends slidably coupled to the respective lateral guideways.
  • Each lateral guideway is obtained with a corresponding aluminum profile of rectangular section, internally hollow and provided with an inner side (facing the inner side of the other lateral guideway) on which a longitudinal slit is obtained into which the corresponding lateral end of the bottom bar is slidably inserted.
  • each lateral guideway is longitudinally extended between an upper end, fixed to the rolling-shutter box, and a lower end closed by a base end fixed to the floor at the lower edge of the opening.
  • the roller of the blind can be actuated, typically by a motor, to rotate so as to move the fabric between a collected position, in which the fabric is wound around the roller with the bottom 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 bottom bar is arranged at the base ends placed at the lower ends of the lateral guideways.
  • blinds are known on the market that are provided with a locking mechanism adapted to automatically lock the bottom bar at the base ends when the fabric is brought into the extended position, and to release the bottom bar from the base ends when it is necessary to again wind the fabric around the roller in order to bring the fabric into the collected position.
  • the locking mechanism of the aforesaid blind of known type comprises a pair of coupling levers mounted on the corresponding lateral ends of the bottom bar and intended to slide within the respective lateral guideways during the movement of the bottom bar.
  • Each coupling lever is hinged by means of a central pin to the corresponding lateral end in a manner such to be able to idly rotate with respect to a rotation axis parallel to the bottom bar.
  • the coupling lever is provided with two arms that are symmetric to each other with respect to the central pin, each provided with one end on which a V-shaped concavity is obtained.
  • each lateral guideway is internally provided with a retention seat in which the corresponding coupling lever is susceptible of being locked when the bottom bar is brought to the base end itself.
  • each base end is provided with an upper wall fixed to the lower end of the corresponding lateral guideway and provided with a passage slit susceptible of being traversed by the corresponding coupling lever in order to enter into and exit from the retention seat of the base end.
  • each base end comprises a locking tab projecting downward from the upper wall into the retention seat and arranged along one of the two longitudinal edges of the passage slit of the upper wall itself.
  • Each base end also comprises a lower wall from which a projecting appendage, extended inside the retention seat and arranged below the opening of the passage slit of the upper wall, is projectingly extended upward.
  • each coupling lever In operation, when the fabric is brought from the collected position to the extended position, the bottom bar descends to the base ends of the lateral guideways, bringing each coupling lever inside the retention seat of the corresponding base end. More in detail, each coupling lever enters into the corresponding retention seat arranged vertically, with the end of one arm directed downward and the end of the other arm directed upward.
  • each coupling lever is brought into abutment against the projecting appendage of the lower wall of the corresponding base end; more in detail, the appendage acts on a tilted side of the V-shaped concavity of the end of the arm of the coupling lever directed downward, in a manner such to rotate the coupling lever about 30°, arranging it with the end of the other arm (directed upward) vertically aligned with the locking tab of the upper wall of the base end.
  • the bottom bar is made to ascend until the end of the arm of the coupling lever directed upward abuts against locking tab of the upper wall, inserting the tab in the V-shaped concavity of such arm which in this manner hits against the tab itself, blocking the ascent of the bottom bar.
  • the bar In order to release the bottom bar from the base ends, the bar is controlled to descend until each coupling lever once again abuts against the corresponding projecting appendage, which brings the coupling lever to rotate in a manner such to arrange the arm that hit against the locking tab with its shaped end directed downward.
  • the locking tab impacts on the side of the arm that it had previous hit, further rotating the locking lever until it is vertically arranged in order to allow the lever itself to traverse the passage slit of the upper wall and exit from the retention seat of the base end.
  • a first drawback of the blind of known type described briefly above is due to the fact that it requires arranging specific lateral guideways with increased width in order to allow the coupling to rotate within the base ends of the guideways themselves, with consequent increases of the blind production costs.
  • the coupling levers must have relative large size, since when the bottom bar is locked to the base end, such levers must sustain the traction force exerted by the motor when it pulls the bottom bar upward, with consequent further need to employ lateral guideways of increased size.
  • a further drawback of the blind of known type described in PR2011A000097 is due to the fact that such blind is not suitable for being installed in openings made at floors with elevation difference (usually present for example in renovated homes or terraces). Indeed, in such conditions, one of the lateral guideways is longer than the other and consequently the base ends of the guides, to which the bottom bar is susceptible of being locked, are arranged at different distances from the rolling-shutter box (and hence from the fabric winding roller). Therefore, when the bottom bar is engaged with the base ends, the side of the fabric arranged at the longer lateral guideway is overly taut, while the side of the fabric arranged at the shorter lateral guideway is not sufficiently taut.
  • the problem underlying the present invention is to arrange a fabric roller blind which is provided with compact lateral guideways.
  • Another object of the present invention is to provide a fabric roller blind which is entirely reliable in operation in any installation environment, and in particular capable of ensuring a correct traction of the extended fabric even in the presence of floor elevation differences.
  • Another object of the present invention is to provide a fabric roller blind which is functionally entirely efficient, and in particular capable of ensuring the correct sliding of the bottom bar along the lateral guideways even in installation conditions in which the guideways are not exactly parallel to each other, for example because they are mounted on walls that are not perfectly vertical.
  • Another object of the present invention is to provide a fabric roller blind which is structurally simple and inexpensive to make and install.
  • the blind 1 can be operatively employed in order to adjustably close an opening A of a door/window/shutter, e.g. of a window, a door or a French window, obtained in a load-bearing element such as a building wall or the load-bearing structure of any building.
  • a door/window/shutter e.g. of a window, a door or a French window
  • a load-bearing element such as a building wall or the load-bearing structure of any building.
  • the blind 1 comprises a support frame 2 intended to be fixed to the load-bearing element, in which the opening A is obtained, and preferably comprising a rolling-shutter box 3 intended to be positioned above the opening A itself.
  • the rolling-shutter box 3 comprises a hollow tubular body, in particular obtained with an aluminum extrusion, which is extended with axis substantially horizontal between two opposite ends closed by two lateral caps, in particular made of plastic material.
  • the blind 1 also comprises a take-up roller 4 rotatably constrained to the support frame 2, advantageously housed inside the rolling-shutter box 3, and provided with a rotation axis X that is substantially horizontal.
  • a flexible fabric 5 is susceptible of being wound and unwound; such fabric preferably crosses through a lower slit of the rolling-shutter box 3.
  • the fabric 5 can be intended for obtaining a darkening screen, e.g. in substitution of a rolling shutter, of a shading screen for filtering sunlight or for obtaining a mosquito netting.
  • the fabric 5 can be dedicated to closing the opening of a door/window/shutter in order to protect an internal area from sun and/or from wind and/or, more generally, from the atmospheric conditions of the outside environment.
  • the fabric 5, as a function of its different applications, can be made of synthetic or natural material fabric and it can have the form of a mesh or have a continuous surface of obscurant, filtering or transparent type.
  • the fabric 5 has a preferably rectangular form and is provided, in a manner per se known to the man skilled in the art, with an upper edge fixed to the take-up roller and with a lower edge fixed to a bottom bar 6 arranged parallel to the take-up roller 4 and aimed to pull the fabric 5.
  • the blind 1 also comprises two lateral guideways 7 extended parallel to one another and alongside one another, among which the fabric 5 is susceptible of sliding following its winding and unwinding around the take-up roller 4.
  • each lateral guideway 7 is longitudinally extended along a respective first direction of extension Y, preferably vertical and substantially orthogonal to the rotation axis X of the take-up roller 4, between an upper end 8 thereof, preferably arranged at the rolling-shutter box 3, and an opposite lower end 9 intended to be arranged at the lower edge of the opening A, e.g. on a floor or on a windowsill.
  • the two lateral guideways 7 are intended to be arranged along corresponding sides of the opening A and to be fixed to the load-bearing element (in which the opening A itself is obtained), e.g. by means of anchorage screws.
  • each lateral guideway 7 is preferably obtained by means of extruded metal sections, in particular of aluminum, and is provided with a transverse section with substantially C-shaped form.
  • each lateral guideway 7 is provided with an open side 10, arranged facing the open side 10 of the other lateral guideway 7, and on which a longitudinal slit 11 is obtained in which the bottom bar 6 is slidably constrained.
  • each lateral guideway 7 is provided with two longitudinal walls 12 that are parallel to each other and connected, along a first edge thereof 12', by a base wall 13 and delimiting, along a second edge thereof 12", the aforesaid longitudinal slit 11 of the open side 10 of the lateral guideway 7.
  • the bottom bar 6 of the blind 1, fixed to the lower edge of the fabric 5, is longitudinally extended along a second direction of extension Z parallel to the rotation axis X of the take-up roller 4, between two lateral ends thereof 14 slidably engaged with the respective lateral guideways 7.
  • the bottom bar 6 is internally hollow and preferably comprises a metal section 6', e.g. of extruded aluminum.
  • the lateral ends 14 of the bottom bar 6 are preferably made of plastic material, they are placed to laterally close the metal section 6' of the bottom bar 6 and are fixed to the latter by means of connection screws, for example.
  • each lateral end 14 of the bottom bar 6 is provided with an enlarged base portion 15, preferably fixed to the metal section 6', and a connection portion 16 projectingly extended from the base portion 15 towards the corresponding lateral guideway 7 and slidably inserted in the longitudinal slit 11 of the latter.
  • each lateral guideway 7 of the blind 1 is at its interior provided with a longitudinal seat 17 extended along the first direction of extension Y between the upper end 8 and lower end 9 of the lateral guideway 7 itself.
  • a rail 18 is fixed, preferably made of plastic material, to which a corresponding lateral edge of the fabric 5 is slidably coupled when the latter is moved from the take-up roller 4.
  • the blind 1 also comprises movement means (not illustrated in the enclosed figures) mechanically connected to the take-up roller 4 and adapted to rotate the latter so as to move the fabric 5 between a collected position, in which the fabric 5 is wound around the take-up roller 4, and an extended position, in which the fabric 5 is unwound from the take-up roller 4 to at least partially close the opening A.
  • movement means (not illustrated in the enclosed figures) mechanically connected to the take-up roller 4 and adapted to rotate the latter so as to move the fabric 5 between a collected position, in which the fabric 5 is wound around the take-up roller 4, and an extended position, in which the fabric 5 is unwound from the take-up roller 4 to at least partially close the opening A.
  • the bottom bar 6 when the fabric 5 is in the collected position, the bottom bar 6 preferably abuts against the rolling-shutter box 3 and, when the fabric 5 is in the extended position, the bottom bar 6 is placed at the lower ends 9 of the lateral guideways 7 with the fabric 5 unwound for the substantially total closure of the opening A.
  • the fabric 5 is therefore completely guided in its winding and unwinding following the rotation of the take-up roller 4, with its lateral edges engaged in the rails 18 placed inside the lateral guideways 7, and with the lower edge fixed to the bottom bar 6 in turn engaged in the lateral guideways 7 themselves.
  • the bottom bar 6 keeps the fabric 5 itself stretched and is moved, remaining horizontal, with its lateral ends 14 engaged with the lateral guideways 7.
  • the aforesaid movement means comprise in a per se entirely conventional manner, a motor (not illustrated) housed inside the take-up roller 4 advantageously at one end thereof.
  • a motor not illustrated
  • the movement means can also be of manual type, and for example obtained by means of an articulated control rod, the motorized embodiment must be intended as being advantageous and undoubtedly preferable.
  • the blind 1 comprises at least one slider element 19 slidably constrained to the bottom bar 6 and movable along the aforesaid second direction of extension Z.
  • Such slider element 19 is provided with an engagement portion 20, passing through the corresponding lateral end 14 of the bottom bar 6 and slidably engaged with the corresponding lateral guideway 7, and with a separate guiding portion 21 fixed to the engagement portion 20.
  • the blind 1 comprises at least one locking element 22 which is fixed to the respective lateral guideway 7, preferably in proximity to the lower end 9 of the latter, and is provided with a shaped channel 23, within which the guiding portion 21 of the slider element 19 is slidably inserted when the fabric 5 is in the extended position; the aforesaid locking element 22 is also provided with an abutment portion 24 susceptible of receiving in abutment the engagement portion 20 of the slider element 19 in order to lock the bottom bar 6 (as described hereinbelow).
  • the shaped channel 23 of the locking element 22 is provided with an access section 25, through which the guiding portion 21 of the slider element 19 enters into the shaped channel 23 following a downward movement of the bottom bar 6 during the unwinding of the fabric 5, and through which the guiding portion 21 of the slider element 19 exits from the shaped channel 23 following an upward movement of the bottom bar 6 during the winding of the fabric 5.
  • the shaped channel 23 of the locking element 22 is also provided with a stop section 26 arranged for guiding the guiding portion 21 of the slider element 19 to set the corresponding engagement portion 20 constrained to the abutment portion 24 of the locking element 22.
  • the guiding portion 21 of the slider element 19 is movable within the shaped channel 23 between the access section 25 and the stop section 26 of the channel 23 itself.
  • the slider element 19 is arranged with the engagement portion 20 spaced from the abutment portion 24 of the locking element 22 at least along the second direction of extension Z, in order to allow the entrance and exit of the guiding portion 21 without the engagement portion 20 interfering with the abutment portion 24.
  • the slider element 19 is arranged with the engagement portion 20 positioned beneath the abutment portion 24 in abutment against the latter, in order to block the upward ascent of the bottom bar 6 by holding the fabric 5 in the extended position.
  • the stop section 26 of the shaped channel 23 is preferably extended at least partly vertically and on the upper part is delimited by a terminal wall 26' advantageously positioned at a lower elevation than that of the abutment portion 24 of the locking element 22.
  • the slider element 19 and the locking element 22 of the blind 1 are configured in a manner such that, when the engagement portion 20 of the slider element 19 abuts against the abutment portion 24 of the locking element 22, the guiding portion 21 of the slider element 19 is vertically spaced from the terminal wall 26' of the stop section 26 of the shaped channel 23, such that the upward traction force exerted on the bottom bar 6 is unloaded on the abutment portion 24 of the locking element 22 through the engagement portion 20 of the slider element 19, without resting on the guiding portion 21 of the latter.
  • the present blind 1 comprises two slider elements 19, associated with the respective lateral ends 14 of the bottom bar 6, and two corresponding locking elements 22 fixed to the respective lateral guideways 7 of the blind 1 itself.
  • each locking element 22 of the blind 1 has a transverse section (with respect to the first direction of extension Y) with substantially C-shaped form, with two arms 27 parallel to each other and connected by a bottom portion 28 directed towards the base wall 13 of the respective lateral guideway 7.
  • the two arms 27 are provided with free ends that together delimit a passage opening 29, facing the longitudinal slit 11 of the lateral guideway 7, and susceptible of being traversed by the slider element 19 when the fabric 5 is brought into the extended position.
  • the shaped channel 23 of each locking element 22 is obtained on the inner face of at least one of the arms 27 of the locking element 22 itself and preferably on the inner faces of both arms 27.
  • each locking element 22 is positioned inside the longitudinal seat 17 of the corresponding lateral guideway 7 and is preferably fixed to the base wall 13 of the guideway 7 itself.
  • each locking element 22 is fixed to the base wall 13 of the corresponding lateral guideway 7 preferably by means of a fixing screw 30 inserted into a through hole of the bottom portion 28 of the locking element 22 itself.
  • each locking element 22 is advantageously made of plastic material and comprises two half-parts 22', 22", with substantially L-shaped section, fixed to each other, preferably by means of the aforesaid fixing screw 30, with partial superimposition of the legs of the half-parts which constitute the bottom portion 28 of the locking element 22 itself.
  • each locking element 22 is provided with a rear side 31, closed by the bottom portion 28, and with a front side 32 on which the aforesaid passage opening 29 is obtained.
  • the access section 25 of the shaped channel 23 of each locking element 22 is provided with a lower wall 33 susceptible of receiving in abutment the guiding portion 21 of the slider element 19 when the bottom bar 6 is moved downward following the unwinding of the fabric 5 from the take-up roller 4.
  • the aforesaid lower wall 33 following the descent of the bottom bar 6, guides the guiding portion 21 of the slider element 19 to a lower end stop section 34 of the shaped channel 23 with preferably concave shape, the descent of the bottom bar 6 being stopped at such section 34.
  • the lower part 33 of the access section 25 of the shaped channel 23 is extended tilted downward from the front side 32 of the locking element 22 towards the rear side 31 of the latter.
  • the guiding portion 21 of the slider element 19 slides on the lower wall 33 towards the rear side 31 of the locking element 22 until it is stopped in the lower end stop section 34, arranging the engagement portion 20 of the slider element 19 below the abutment portion 24 of the locking element 22 vertically spaced from the abutment portion 24 itself.
  • the shaped channel 23 is also provided with a connector section 35, placed to connect between the lower end stop section 34 and the stop section 26, and through which the guiding portion 21 of the slider element 19, following an ascending movement of the bottom bar 6, is moved from the lower end stop section 34 to the stop section 26 until the engagement portion 20 of the slider element 19 abuts against the abutment portion 24 of the locking element 22.
  • the shaped channel 23 is provided with a transmission section 36, preferably with concave shape, and susceptible, during the release of the bottom bar 6, to receive in abutment the guiding portion 21 coming from the stop section 26 following a descending movement of the bottom bar 6 itself.
  • a transmission section 36 is provided with a tilted surface 36' arranged for bringing the guiding portion 21 towards the front side 32 of the locking element 22 in a manner so as to move such guiding portion 21 from beneath the stop section 26. In this manner, a subsequent upward movement of the bottom bar 6 prevents the guiding portion 21 from returning into the stop section 26.
  • the access section 25 of the shaped channel 23 is provided with an upper wall 37 partially facing the cavity of the transmission section 36 in a manner such that, following an upward movement of the bottom bar 6, such upper wall 37 receives in abutment the guiding portion 21, guiding it towards the front side 32 of the locking element 22 until it is made to exit from the shaped channel 23.
  • the upper wall 37 of the access section 25 is extended tilted upward from the transmission section 36 to the front side 32 of the locking element 22 in a manner so as to guide the guiding portion 21 of the slider element 19 outside the shaped channel 23 following an ascending movement of the bottom bar.
  • each locking element 22 comprises a guide portion 38 projectingly extended from the front side 32 of the locking element 22 itself as an extension of the lower wall 33 of the access section 25 of the corresponding shaped channel 23, and adapted to receive in abutment the guiding portion 21 of the slider element 19, guiding it into the access section 25 of the shaped channel 23 itself.
  • each slider element 19 of the blind 1 has elongated shape (preferably rod-like) along the second direction of extension Z of the bottom bar 6, extended between an inner end 39, arranged inside the metal section 6' of the bottom bar 6, and an outer end 40 at which the corresponding engagement portion 20 is arranged.
  • each slider element 19 is extended outside the bottom bar 6, projecting from the base portion 15 of the corresponding lateral end 14, and is preferably parallel to the connection portion 16 of the lateral end 14, being inserted in the longitudinal seat 17 of the corresponding lateral guideway 7 passing through the longitudinal slit 11 of the latter.
  • each slider element 19 is preferably integrally made with the rod-like body of the slider element 19 itself and preferably has a width of about 10 mm.
  • each slider element 19 is extended transverse to the second direction of extension Z of the bottom bar 6 and transverse to the first direction of extension Y of the lateral guideways 7.
  • the guiding portion 21 is projectingly extended from the engagement portion 20 orthogonal to the longitudinal extension of the corresponding slider element 19.
  • the guiding portion 21 is extended from two opposite sides of the engagement portion 20 of the corresponding slider element 19, in particular orthogonal to the arms 27 of the corresponding locking element 22 fixed to the lateral guideway 7.
  • the guiding portion 21 of each slider element 19 is obtained with a rod which is arranged transverse to the rod-like body of the slider element 19 itself, is inserted into a corresponding connection hole 41 obtained in the engagement portion 20, and preferably has a width of about 2-3 mm.
  • each lateral end 14 of the bottom bar 6 is provided with a first through hole 42 in which the corresponding slider element 19 is slidably inserted.
  • the aforesaid first through hole 42 is partly extended into the base portion 15 and partly extended into the connection portion 16 of the corresponding lateral end 14 of the bottom bar 6.
  • the present blind 1 comprises two guiding elements 43, each of which is slidably engaged with the bottom bar 6 at the respective lateral end 14 of the bottom bar 6 itself and movable along the second direction of extension Z of the latter.
  • each guiding element 43 is provided with a front portion 44 slidably inserted into the longitudinal slit 11 of the corresponding lateral guideway 7.
  • Elastic means 45 are also provided, interposed between the bottom bar 6 and the corresponding guiding element 43 and arranged for pushing such guiding element 43 towards the corresponding lateral guideway 7 along the second direction of extension Z in order to maintain the front portion 44 of the guiding element 43 inserted in the longitudinal slit 11 of the lateral guideway 7.
  • each guiding element 43 is slidably inserted into the first through hole 42 of the corresponding lateral end 14 of the bottom bar 6, and also the corresponding slider element 19 is inserted in such first hole 42.
  • each guiding element 43 has tubular form extended along the second direction of extension Z between a rear end 46, preferably arranged inside the bottom bar 6, and the aforesaid front end 44 inserted in the longitudinal slit 11 of the corresponding lateral guideway 7.
  • each guiding element 43 is provided with a second through hole 47 in which the corresponding slider element 19 is slidably inserted, in a manner so as to allow the sliding thereof.
  • the corresponding guiding element 43 is arranged in abutment against such slider element 19, pushing the guiding portion 21 of the latter inside the longitudinal slit 11 of the corresponding lateral guideway 7, in a manner so as to allow the guiding portion 21 to enter into the shaped channel 23 of the locking element 22 when the fabric 5 is brought into the extended position.
  • each guiding element 43 is placed in abutment against the guiding portion 21 of the corresponding slider element 19, pushing the latter towards the corresponding lateral guideway 7.
  • each guiding element 43 is provided with an abutment shoulder 48 thrust against the second edges 12" of the longitudinal walls 12 of the lateral guideway 7 itself.
  • the elastic means 45 comprise a helical spring 49, in particular arranged around the corresponding slider element 19 and compressed between a first inner shoulder 50 obtained in the bottom bar and a second inner shoulder 51 obtained in the corresponding guiding element 43.
  • the motor actuates the take-up roller 4 to rotate in a first rotation sense, unwinding the fabric 5 from the roller 4 itself and allowing the bottom bar 6 to descend along the lateral guideways 7 to the locking elements 22.
  • the lower wall 33 of the shaped channel 23 brings the corresponding guiding element 21 to the lower end stop section 34 of the channel 23 itself, and at such section 34 the motor stops the rotation of the take-up roller 4.
  • the motor of the blind 1 is provided with a programmed control unit, in a manner per se known to the man skilled in the art, in order to make the take-up roller 4 execute a specific number of revolutions in the aforesaid first rotation sense, as a function in particular of the length of the lateral guideways 7, in a manner so as to stop the movement of the take-up roller 4, and hence the descent of the bottom bar 6, when the guiding portion 21 of each slider element 19 has reached the lower end stop section 34 of the shaped channel 23 of the corresponding locking element 22, preferably with a specific over-travel of, for example, several millimeters.
  • the motor actuates the take-up roller to rotate in a second rotation direction, opposite the first, in a manner so as to pull the bottom bar 6 upward. Consequently, with reference to the embodiment of figure 8b , the guiding portion 21 of each slider element 19 is brought to slide in the shaped channel 23 from the lower end stop section 34 to the stop section 26, passing through the connector section 35, until the engagement portion 20 of the slider element abuts against the abutment portion 24 of the corresponding locking element 22, stopping the ascending movement of the bottom bar 6 in a manner so as to pull the fabric 5 into the extended position between the take-up roller 4 and the bottom bar 6 itself.
  • the motor increases the generated force with a consequent increase of the absorbed energy until a specific absorption threshold value is reached, beyond which the motor is programmed to be stopped.
  • the motor is controlled to rotate the take-up roller 4 in the first rotation sense in order to make the bottom bar 6 descend. Consequently, the guiding portion 21 of each slider element 19 descends from the stop section 26 to the transmission section 36 of the corresponding shaped channel 23, in particular falling on the tilted surface 36' of the aforesaid transmission section 36 which brings the guiding portion 21 towards the front side 32 of the locking element 22 in a manner such to move the guiding portion 21 from beneath the stop section 26, bringing it beneath the upper wall 37 of the access section 25 of the shaped channel 23.
  • the control unit controls the motor to be stopped and, subsequently, to drive the take-up roller 4 to rotate in the second rotation sense in order to pull the bottom bar 6 upward. Consequently, with reference to the embodiment illustrated in figure 8c , the guiding portion 21 of each slider element 19 is brought into abutment against the upper wall 37 of the access section 25 of the corresponding shaped channel 23, which, following the ascending movement of the bottom bar 6, brings the guiding portion 21 towards the front side 32 of the corresponding locking element 22, in a manner so as to move the engagement portion 20 of the slider element 19 from below the abutment portion 24 of the locking element 22 itself.
  • the guiding portion 21 exits from the corresponding shaped channel 23 without the engagement portion 20 interfering with the abutment portion 24 of the locking element 22, allowing the bottom bar 6 to ascend towards the take-up roller 4 until the fabric 5 is brought into its retracted position wound around the roller 4 itself.
  • the take-up roller 4 is manually actuated by a user
  • the above-described descending and ascending movements of the bottom bar 6 are controlled by the user himself, for example by means of an articulated control rod.
  • the invention thus conceived therefore attains the pre-established objects.
  • the slider elements 19 of the blind 1 according to the invention provided with guiding portions 21 separate from the engagement portions 20 intended to be coupled to the corresponding locking elements 22, allow loading the locking force, to which the bottom bar 6 is subjected when it is locked, on the engagement portion 20 and not on the guiding portion 21.
  • This allows obtaining the guiding portion 21 of the slider elements 19 of small size with respect to the engagement portion 20, allowing the obtainment of the shaped channels 23 of equally small size within the locking elements 22, determining a compact size of the latter. Consequently, it is possible to arrange the locking elements 22 in lateral guideways 7 of compact size, and in particular in the guideways of standard size present on the market, also employed for blinds that are not equipped with automatic locking systems for the bottom bar.
  • the arrangement of the locking elements 22 according to the invention inside the longitudinal seats 17 of the corresponding lateral guideways 7, allows, during installation, adjustably arranging the height of the locking elements 22. In this manner, it is possible to arrange the two locking elements 22 at the same distance from the take-up roller 4 even in the presence of floor elevation differences, ensuring equal tightening along both the lateral edges of the fabric 5 when it is in the extended position.
  • the guiding element 43 associated with each lateral end 14 of the bottom bar 6 of the blind 1 according to the invention, allows maintaining the bottom bar 6 correctly engaged with the lateral guideways 7 even in conditions in which the latter are not exactly parallel, such as for example in the presence of walls that are not perfectly vertical.
  • the guiding element 43 acting on the corresponding slider element 19, allows maintaining the engagement portion 20 of the latter within the corresponding lateral guideway 7, ensuring the correct insertion of the guiding portion 21 of the slider element 19 in the shaped channel 23 of the corresponding locking element 22 when the bottom bar 6 is brought to the latter.

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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)
EP15186702.5A 2014-09-24 2015-09-24 Volet roulant en tissu Active EP3000958B1 (fr)

Applications Claiming Priority (1)

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ITPD20140246 2014-09-24

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EP3000958A1 true EP3000958A1 (fr) 2016-03-30
EP3000958B1 EP3000958B1 (fr) 2017-05-17

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160032646A1 (en) * 2013-03-15 2016-02-04 Jacob Fleischman Retractable wall system and adaptor components
US10273750B2 (en) 2013-03-15 2019-04-30 Jacob Fleischman Roll-up wall system and modular components
IT201800009261A1 (it) * 2018-10-08 2020-04-08 Palagina Srl Tenda con telo avvolgibile
EP3708762A1 (fr) * 2019-03-13 2020-09-16 Roletarstvo Medle d.o.o. Mécanisme antivol pour volets roulants et procédé associé
US10844657B2 (en) 2014-05-15 2020-11-24 Tudelu Llc Roll-up wall and acoustic barrier system
WO2021175337A1 (fr) * 2020-03-04 2021-09-10 刘英杰 Dispositif de répulsion de moustiques
US11131090B2 (en) 2017-04-26 2021-09-28 Tudelu Llc Modular roll-up wall system
WO2023118444A1 (fr) * 2021-12-23 2023-06-29 Corradi S.R.L. Construction d'écran rétractable

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011006874A1 (fr) * 2009-07-14 2011-01-20 Fanani S.R.L. Ensemble de verrouillage, particulièrement pour auvents extérieurs
ITPR20110097A1 (it) 2011-11-25 2013-05-26 Arquati Group S R L Struttura di apertura e chiusura di un passaggio
EP2631388A2 (fr) * 2012-02-22 2013-08-28 Corradi S.P.A. Ensemble de guidage pour rideaux, stores et dispositifs similaires
WO2014045222A1 (fr) * 2012-09-21 2014-03-27 Fanani S.R.L. Appareil de verrouillage pour rideaux, parois mobiles, moustiquaires et similaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011006874A1 (fr) * 2009-07-14 2011-01-20 Fanani S.R.L. Ensemble de verrouillage, particulièrement pour auvents extérieurs
ITPR20110097A1 (it) 2011-11-25 2013-05-26 Arquati Group S R L Struttura di apertura e chiusura di un passaggio
EP2631388A2 (fr) * 2012-02-22 2013-08-28 Corradi S.P.A. Ensemble de guidage pour rideaux, stores et dispositifs similaires
WO2014045222A1 (fr) * 2012-09-21 2014-03-27 Fanani S.R.L. Appareil de verrouillage pour rideaux, parois mobiles, moustiquaires et similaires

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160032646A1 (en) * 2013-03-15 2016-02-04 Jacob Fleischman Retractable wall system and adaptor components
US10273750B2 (en) 2013-03-15 2019-04-30 Jacob Fleischman Roll-up wall system and modular components
US10844657B2 (en) 2014-05-15 2020-11-24 Tudelu Llc Roll-up wall and acoustic barrier system
US11131090B2 (en) 2017-04-26 2021-09-28 Tudelu Llc Modular roll-up wall system
IT201800009261A1 (it) * 2018-10-08 2020-04-08 Palagina Srl Tenda con telo avvolgibile
EP3636872A1 (fr) 2018-10-08 2020-04-15 Palagina S.r.l. Volet roulant en tissu
EP3708762A1 (fr) * 2019-03-13 2020-09-16 Roletarstvo Medle d.o.o. Mécanisme antivol pour volets roulants et procédé associé
WO2021175337A1 (fr) * 2020-03-04 2021-09-10 刘英杰 Dispositif de répulsion de moustiques
WO2023118444A1 (fr) * 2021-12-23 2023-06-29 Corradi S.R.L. Construction d'écran rétractable

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