EP3567205B1 - Chaîne de guidage pour rouleau en tissu - Google Patents

Chaîne de guidage pour rouleau en tissu Download PDF

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Publication number
EP3567205B1
EP3567205B1 EP19173717.0A EP19173717A EP3567205B1 EP 3567205 B1 EP3567205 B1 EP 3567205B1 EP 19173717 A EP19173717 A EP 19173717A EP 3567205 B1 EP3567205 B1 EP 3567205B1
Authority
EP
European Patent Office
Prior art keywords
guide
extended
fabric
handle bar
guide chain
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.)
Active
Application number
EP19173717.0A
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German (de)
English (en)
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EP3567205A1 (fr
Inventor
Moreno FRANCALANCI
Alessandro Ostuni
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
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Palagina SRL
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Publication of EP3567205A1 publication Critical patent/EP3567205A1/fr
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Publication of EP3567205B1 publication Critical patent/EP3567205B1/fr
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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
    • E06B9/52—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
    • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
    • E06B9/54—Roller fly screens
    • E06B2009/543—Horizontally moving screens

Definitions

  • the present invention regards a guide chain for a fabric roller blind according to the preamble of claim 1 and a fabric roller blind.
  • the present fabric roller blind is intended to be advantageously used for adjustably closing or screening given openings of building walls, in particular for windows, for doors, for French doors and similar doors/windows/shutters.
  • the guide chain object of the present invention, is intended to be advantageously employed for unwinding, in a guided manner, a screening fabric of a fabric roller blind.
  • the blind and the guide chain, object of the present invention are therefore inserted in the industrial field of production of doors/windows/shutters or even in the field of production of blinds with fabrics for sun protection, in the mosquito netting field, in the field of production of replacement parts for blinds or similar applications.
  • Blinds for closing openings of doors/windows/shutters are known on the market, and are provided with a rolling-shutter box, which is fixed to a building wall or to an upright that is lateral with respect to the opening to be closed and houses a roller therein on which a flexible covering fabric is susceptible of being wound and unwound.
  • the fabric usually has rectangular shape and is provided with a first lateral edge fixed to the roller and with a second lateral edge opposite the first lateral edge and fixed to a handle bar susceptible of being gripped by a user and aimed to stretch the fabric itself during a movement thereof along a horizontal direction.
  • the blind comprises two guides arranged horizontally along the corresponding upper and lower walls which define the opening and to which the handle bar is slidably constrained.
  • the handle bar comprises an aluminum section closed at the upper and lower ends by two terminations slidably coupled to the respective horizontal guides.
  • the handle bar is movable by a user between an open position, in which it faces the rolling-shutter box with the fabric completely wound around the roller so as to free the opening to be screened, and a closed position in which the handle bar faces the opposite side wall, with the fabric substantially completely unwound from the roller and placed to close the opening.
  • the user grips the handle bar and drives it along the horizontal guides up to the desired position, for example up to the closed position, in which the fabric is placed to completely cover the opening.
  • a fabric roller blind which comprises a guide chain composed of a plurality of elements pivoted to each other in succession and capable of rotating with respect to each other only in one rotation direction so as to attain when extended, in an extended position and aligned in succession, a rigid member in the opposite rotation direction, susceptible of making a guide for the fabric.
  • Such elements are housed, in a retracted configuration, within a corresponding vertical seat made within the handle bar when the blind is in open position.
  • the chain is constrained at one end thereof to the rolling-shutter box in which the take-up roller is housed, while at the other end it is slidably inserted within the vertical seat of the handle bar.
  • the guide chain When the blind is moved from the open position to the closed position, the guide chain is driven outside of the vertical seat of the handle bar, being set on the lower wall (usually the floor or a windowsill) which delimits the opening to be screened, thus acting as a lower guide for the fabric.
  • the guide chain with the blind in closed position, therefore defines a horizontal rectilinear guide for the fabric, which allows retaining it in the spread-out position to close the opening to be screened.
  • each element of the guide chain has elongated form along a main direction extended between a first and a second end opposite with respect to the first end along the aforesaid main direction.
  • Each guide element is provided with two facing side walls parallel to the main direction and connected by a transverse bridge portion.
  • two projecting pins are also provided in proximity to the first end and two through holes are also provided that are made in the same side walls in proximity to the second end.
  • the through holes made on the side walls are engaged by two corresponding pins of a contiguous element of the chain, allowing a relative rotation between the two elements themselves during the movement of the chain between the extended position and the retracted position within the handle bar.
  • each guide element comprises two projecting pins.
  • Each of the projecting pins is provided with a smoothed portion for facilitating its insertion within a corresponding hole made in the adjacent guide element.
  • the document KR101358945 B1 discloses a fabric roller blind with a guide chain having all the features of the preamble of claim 1.
  • a first drawback of the blind of known type lies in the fact that, if the blind does not provide for the presence of a lower guide body on which the guide chain is mechanically associated, the guide chain itself does not have sufficient rigidity in the extended position and therefore in the case of stresses transverse to the extension direction of the blind - e.g. due to accidental impact for example due to a foot of a user or to stresses exerted by the wind on the fabric - these can lead to the separation of the guide elements.
  • a further drawback lies in the fact that the pins and the corresponding through holes are visible when the chain is in the extended position and make for an unaesthetic appearance.
  • the problem underlying the present invention is to provide a fabric roller blind, which allows a quick and facilitated movement of the guide chain between the retracted position and the extended position.
  • a further object of the present invention is to provide a fabric roller blind, which is mechanically stable with the fabric spread out or at least partially spread out in particular for resisting the transverse stresses exerted by accidental impacts or by the wind on the fabric of the blind, without including a lower guide body for the guide chain.
  • a further object of the present invention is to provide a fabric roller blind, which is entirely reliable in operation.
  • a further object of the present invention is to provide a fabric roller blind that is structurally simple and inexpensive to make and install and which therefore involves limited production and installation costs.
  • a further object of the present invention is to provide a fabric roller blind provided with a guide chain with fine aesthetic appearance.
  • a further object of the present invention is to provide a guide chain for a fabric roller blind which allows a quick and easy movement between the retracted position and the extended position.
  • reference number 1 overall indicates the fabric roller blind, object of the present invention.
  • the blind 1 is operatively employable for adjustably closing an opening A of a door/window/shutter, for example of a window, of a door or of a French door, made in a load-bearing structure such as the building wall of a building.
  • the fabric roller blind, object of the present invention comprises a support frame 2, which is provided with at least two lateral uprights 3, 3' and with an upper crosspiece 22 to delimit the opening A to be screened.
  • the support frame 2 can for example be fixed to the load-bearing structure at the opening, by embedding it within the building or wood section or fixing it with frontal mounting on the internal or external face of the building wall in which the opening is made.
  • a first lateral upright 3 of the two lateral uprights 3, 3' of the support frame 2 comprises a rolling-shutter box 25 intended to be laterally positioned with respect to the opening A to be screened.
  • the rolling-shutter box 25 is made by means of a hollow tubular body, in particular obtained with an aluminum extrusion, which is extended with axis substantially vertical between two opposite upper and lower ends.
  • the blind 1 also comprises preferably at least one take-up roller 4 having a substantially vertical rotation axis Y. Such take-up roller 4 is rotatably connected to the first lateral upright 3 of the support frame 2 and preferably housed within the rolling-shutter box 25.
  • the blind 1 comprises at least one handle bar 6, which is extended parallel to the lateral uprights 3, 3' and is slidably movable between said lateral uprights 3, 3'.
  • the handle bar 6 is made with a hollow tubular body, in particular obtained with an aluminum extrusion.
  • the blind 1 also comprises at least one extensible fabric 5, which is extended between a first lateral edge thereof associated with a first upright 3 of the lateral uprights 3, 3' and a second lateral edge thereof opposite the first lateral edge associated with the handle bar 6.
  • the fabric 5 can be intended for making a darkening screen, for example in substitution of a rolling shutter, a brise-soleil screen for filtering the sunlight, or for making 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 the sun and/or from the 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 material fabric and can have the form of a net in order to prevent the entrance of insects, or it can have a continuous surface of darkening, filtering or transparent type.
  • the fabric 5 has substantially rectangular shape and is extended between its first lateral edge advantageously fixed to the take-up roller 4 and its second lateral edge opposite the first lateral edge.
  • the fabric 5 is susceptible of being wound around the take-up roller 4.
  • the fabric 5 wound around the take-up roller 4 advantageously passes through a vertical slit which is made on a side wall of the rolling-shutter box 25, which is directed towards a second upright 3' of the two lateral uprights 3, 3'.
  • the blind 1, object of the present invention also comprises at least one guide chain 7 placed to connect between the first lateral upright 3 and the handle bar 6 comprising a plurality of guide elements 8 linked together along an extension line Z.
  • the handle bar 6 is advantageously internally provided with at least one vertical seat, in particular made within the aluminum extrusion, which is extended substantially vertically starting from a lower terminal of the handle bar 6 itself.
  • Each guide element 8 which forms the guide chain 7 comprises two facing side walls 9 substantially parallel to the extension line Z and connected by at least one central body 10.
  • each guide element 8 of the guide chain 7 internally defines a groove 29 open on the upper part, which houses a lower flap of the fabric 5 with the handle bar 6 in the closed position.
  • each guide element 8 comprises two upper walls 31 mechanically connected to the side walls 9 facing the guide wall 30.
  • each upper wall 31 is provided with an internal edge 33 side-by-side the internal edge 33 of the adjacent upper wall.
  • a passage opening 34 is defined for the insertion of the lower flap of the fabric 5, which is placed to at least partially cover the opening A, with the handle bar 6 in closed position.
  • the lower flap of the fabric 5 is provided with retention brushes, which are housed within the groove 29 and susceptible of abutting against the upper walls 31, which act as undercut portions, locking the lower flap of the fabric 5 to the guide chain 7.
  • the fabric 5 is released from the rolling-shutter box 25 and in particular is unrolled from the take-up roller 4 in a guided manner on the lower part, since its lower flap is advantageously inserted in the plurality of grooves 29 aligned along the extension line Z of the plurality of guide elements 8 of the guide chain 7.
  • the handle bar 6 of the blind 1 is movable between at least one open position and a closed position.
  • the handle bar 6 in the open position the handle bar 6 is placed in proximal position with respect to the first lateral upright 3 and the guide chain 7 is in a retracted position, in which the guide elements 8 are at least partially housed within the handle bar 6 aligned substantially vertically.
  • the handle bar 6 is placed in distal position with respect to the first lateral upright 3 and the guide chain 7 is in an extended position, in which the guide elements 8 of the guide chain 7 are at least partially extended aligned below the fabric 5 substantially horizontally.
  • the handle bar 6 when the handle bar 6 is in the open position, it is placed in a position substantially proximal to the take-up roller 4, around which the fabric 5 is wound, at least partially freeing the opening A from the fabric 5, for example freeing such opening A from a mosquito netting in order to allow the passage of a user therethrough.
  • the handle bar 6 in the closed position, the latter is placed in distal position with respect to the take-up roller 4, with the fabric at least partially unwound from the take-up roller 4 itself, to at least partially cover the opening A, for example screening the opening A by means of a mosquito netting in order to prevent the entrance of insects within a building, on which the opening A to be screened is obtained.
  • the handle bar 6 With the handle bar 6 in the closed position, the latter is preferably mechanically associated with the second lateral upright 3' in order to completely screen the opening A with the fabric 5.
  • the second lateral upright 3' advantageously also has anchorage means 26 for stopping the handle bar 6 in closed position or for releasing it so as to allow the return thereof into open position.
  • an intermediate position is provided, in which the extension line Z forms at least one curve, in which the guide elements 8 are tilted with respect to each other.
  • the guide elements 8 are moved between the extended position, in which they are aligned substantially horizontally on a floor, defining the opening A on the lower part, and the retracted position, in which they are aligned substantially horizontally within the handle bar 6, in particular within the vertical seat made within the handle bar 6 itself.
  • the guide chain 7 is extended between a first terminal 27 thereof connected to the first lateral upright 3 and a second terminal 28 thereof slidably inserted within the vertical seat (not illustrated in the enclosed figures) made in the handle bar 6.
  • the extension line Z, along which the guide chain 7 is extended, defines a curve at the lower terminal of the handle bar, in which a traversing channel is provided for the guide chain 7 itself.
  • the handle bar 6 comprises a guide profile placed at its lower terminal shaped for accompanying the guide chain 7 during its entering and exiting movement into/out from the vertical seat made in the handle bar 6 itself.
  • each guide element 8 of the guide chain 10 comprises at least one shaped pin 11 provided on at least one of the side walls 9, projecting in a transverse direction X with respect to the extension line Z and provided with a transverse section which has a width 14, extended substantially parallel to the extension line Z, greater than a height 15 thereof extended substantially orthogonal to the extension line Z.
  • each guide element 8 of the guide chain 10 also comprises at least one groove 12, which is made on at least one of the side walls 9 and remains defined between at least two sides 23.
  • sides At least two containment walls adapted to define the width of the groove 12, whether they are for example made in a depression on the side wall 9 of each guide element 8, or for example provided projectingly on the side wall 9 of each guide element 8.
  • the aforesaid groove 12 is extended starting from an inlet opening 16 made on a perimeter edge 24 of the at least one side wall 9 of the guide element 8 and houses the shaped pin 11 of a contiguous said guide element 8.
  • the shaped pin 11 is susceptible of being stopped against the sides 23 with the guide chain 7 in the retracted position and in the extended position and of defining a maneuvering distance with the sides 23 with the guide chain 7 in the intermediate position.
  • the latter is for example comprised between 0.2 and 3 mm when the chain is in the intermediate position.
  • the sides 23 define an extension of the groove 12 parallel to the extension direction Z substantially equal to the width 14 of the transverse section of the shaped pin 11.
  • the extension of the groove 12 defined by the sides 23 is constant starting from the inlet opening 16 up to the bottom wall 19.
  • the width 14 of the shaped pin 11 is extended between two opposite ends along the extension line Z.
  • Such opposite ends are susceptible of being mechanically engaged with the corresponding sides 23 that delimit the groove 12, with the guide chain 7 in the extended position or in the retracted position, integrally locking the guide elements to each other along the extension line Z.
  • the guide chain is rigid and mechanically capable of resisting the transverse stresses.
  • the guide elements 8 of the guide chain 7 at the traversing channel provided in the handle bar 6 are at least partially tilted with respect to each other.
  • the shaped pins 11 of each guide element 8 are spaced by the aforesaid maneuvering distance from the sides 23 which delimit the groove 12 of the contiguous guide element to which the guide element 8 is rotatably connected, so as to allow the pins to freely rotate without friction.
  • the idea underlying the invention i.e. being able to provide the transverse section of each shaped pin 11 with a width 14 along the extension line Z greater than the height 15 orthogonal to the extension line Z, allows locking the shaped pin 11 itself against the sides 23 of the groove 12 while the height 15 lower than the height 14 allows defining the aforesaid maneuvering distance with the guide chain in the intermediate position, so as to allow an easy rotation of the guide elements 8 and an easier movement of the guide chain 7 between the retracted position and the extended position.
  • the intermediate position of the guide chain 7, in which the maneuvering distance remains defined between the opposite ends of each shaped pin 11 of each guide element 8 and the sides 23 of the groove 12 of the contiguous guide element 8, is in particular depicted in the enclosed figure 12 , in which a guide element 8 of the guide chain 7 is depicted transparent so to be able to easily appreciate the relative position between the shaped pin 11 and the groove 12.
  • the ratio between the width 14 and the height 15 of the transverse section of the shaped pin 11 of each guide element 8 of the guide chain 7 is comprised in the interval 1.1 - 1.5 and in particular is comprised in the interval 1.2 - 1.4.
  • each guide element 8 of the guide chain 7 comprises two shaped pins 11, each provided on one of the two side walls 9 and two grooves 12, each also provided on a corresponding side wall 9 of the two facing side walls 9.
  • the two shaped pins 11 are advantageously aligned along the transverse direction X and the two grooves 12 have the concavities directed internally towards the central body 10 and facing, also substantially aligned along a second transverse direction parallel to the transverse direction X of the shaped pins 11, in order to allow the housing therein of two corresponding shaped pins 11 of the contiguous guide element 8.
  • the side walls 9 comprise two corresponding convexities 17 which project outside the side walls 9 parallel to the transverse direction X.
  • the aforesaid at least one groove 12 is advantageously made on at least one of the convexities 17 and is provided with concavity directed towards the central body 10 and in particular two grooves 12 are provided, each made on the corresponding convexity 17.
  • the depth of the shaped pins 11 (projectingly provided on the side walls 9) along the transverse direction X is equal to the depth of the grooves 12 (made on the convexities 17).
  • each side wall 9 of each guide element 8 of the guide chain 7 comprises two projecting portions 18 which extend facing and parallel to the extension direction Z.
  • Each guide element 8 comprises advantageously two aforesaid shaped pins 11, each provided on a corresponding projecting portion 18 of the projecting portions 18 of the side walls 9 and externally projecting with respect to the central body 10, preferably aligned along the transverse direction X.
  • Each guide element 8 also comprises advantageously two aforesaid grooves 12, each made on a corresponding convexity 17 with concavity directed towards the central body 10 and extended between the inlet opening 16 and a bottom wall 19 opposite the inlet opening 16 and susceptible of receiving, in abutment, the corresponding shaped pin 11 of the contiguous guide element 8.
  • the inlet openings 16 of the grooves 12 are also vertically provided towards the bottom when the guide chain 7 is in extended position, so as to avoid the risk that the shaped pins 11 escape from the grooves 12.
  • the inlet openings 16 of the grooves 12 allow inserting the shaped pins 11 during the mounting step of the blind 1, object of the present invention, so as to limit the elastic stress impressed on the side walls 9 during the insertion of the pins 11.
  • the shaped pin 11 of each guide element 8 is provided with substantially oval transverse section, and with a tooth 13 radially projecting along the direction substantially orthogonal with respect to the transverse direction X, such tooth susceptible of abutting against the bottom wall 19 of the corresponding groove 12 with the handle bar 6 in the extended and retracted positions.
  • the tooth 13 of the shaped pin 11 of each guide element 8 of the guide chain 7 is provided projecting substantially orthogonal both with respect to the transverse direction X and to the extension line Z.
  • the tooth 13 of the shaped pin 11 projects substantially vertically upward with the guide chain in the extended position.
  • each guide element 8 of the guide chain 7 comprises stopping means 20 placed to mechanically interfere with a corresponding guide element 8 contiguous with the guide chain 7 in the extended position, in order to stop the relative rotation of the guide elements 8 themselves.
  • the guide elements 8 are aligned and stopped in their rotation by the stopping means 20, so as to ensure the linearity of the guide chain 7 and prevent an erroneous outward exit of the shaped pins 11 from the corresponding grooves 12 through the outlet openings 16.
  • each guide element 8 comprise at least one rib 21 projecting parallel to the extension direction Z and at least one cavity 32 made in the central body 10 defined by an abutment wall 35 that is counter-shaped with respect to the rib 21 and susceptible of receiving, in abutment, the at least one rib 21 itself of a contiguous guide element 8.
  • each of the cavities 32 is laterally defined by two facing guide walls 36 that are substantially transverse to the transverse direction X.
  • each guide element 8 is adapted to limit the movement of the ribs 21 of the contiguous guide element 8 with respect to stresses parallel to the transverse direction X.
  • each guide element 8 indeed remain advantageously housed in the corresponding cavities 32 of the contiguous guide element 8, conferring rigidity to the guide chain 7, with respect to the aforesaid transverse stresses, due for example to accidental impact.
  • the pins and the relative grooves described above can be substituted by non-shaped pins, e.g. cylindrical, and by grooves constituted by holes corresponding to the pins (not illustrated in the enclosed figures).
  • each guide element 8 will be connected to each other by means of at least one transverse pin of each guide element 8 rotatably inserted in a relative corresponding hole, in particular perimetrically closed, of the contiguous guide element 8.
  • the at least one cavity 32 is directed downward and the abutment wall 35 delimits it on the upper part in order to stop the movement of the rib 21 of the contiguous guide element 8.
  • the stopping means 20 comprise two ribs 21 which project parallel to the extension direction Z and are susceptible of abutting against two corresponding abutment walls 35 that on the upper part delimit two corresponding cavities 32 counter-shaped with respect to the ribs 21.
  • the guide chain 7 of the blind 1, object of the present invention, described up to now is therefore structurally solid and entirely reliable in operation, and moreover is able to resist shear stresses imparted by the lower flap of the fabric 5, e.g. due to gusts of wind, since the pins 11 housed in the grooves 12 and, preferably, the ribs 21 retained in the cavities 32 of the stopping means 20 confer a high resistance to the aforesaid forces.
  • the guide chain 7 for a fabric roller blind 1, object of the present invention is intended to be placed to connect between the lateral upright 3 and the handle bar 6 below the fabric 5 of the blind 1.
  • the guide chain 7 comprises a plurality of guide elements 8 linked together along an extension line Z and susceptible of being moved between an extended position, in which the guide elements 8 are at least partially extended substantially horizontally and aligned below the fabric 5, and a retracted position, in which the guide elements 8 are at least partially housed within the handle bar 6 aligned substantially horizontally.
  • the guide chain 7 is also susceptible of being moved, between the retracted position and the extended position, into an intermediate position in which the extension line Z forms at least one curve, in which the guide elements 8 are tilted with respect to each other.
  • Each guide element 8 of the guide chain 7, object of the present invention comprises two facing side walls 9 substantially parallel to the extension line Z and connected by at least one central body 10.
  • each guide element 8 of the plurality of guide elements 8 of the guide chain 7 comprises at least one shaped pin 11 provided on at least one of the side walls 9, projecting in a transverse direction X with respect to the extension line Z.
  • Such shaped pin 11 is provided with a transverse section which has a width 14, extended substantially parallel to the extension line Z, greater than a height 15 thereof extended substantially orthogonal to the extension line Z.
  • the ratio between the width 14 and the height 15 of the transverse section of the shaped pin 11 is comprised in the interval 1.1 - 1.5 and more particularly is comprised in the interval 1.2 - 1.4.
  • each guide element 8 also comprises at least one groove 12, which is made on at least one of the side walls 9 and remains defined between at least two sides 23, is extended starting from an inlet opening 16 made on a perimeter edge 24 of the at least one side wall 9 of the guide element 8 and houses the shaped pin 11 of a contiguous aforesaid guide element 8.
  • the shaped pin 11 is susceptible of being stopped against the sides 23 with the guide chain 7 in the retracted position and in the extended position and of defining a maneuvering distance with the sides 23 with the guide chain 7 in the intermediate position.
  • the sides 23 of the groove 12 define an extension of the groove 12 itself, parallel to the extension direction Z, substantially equal to the width 14 of the transverse section of the shaped pin 11.
  • the finding thus conceived therefore attains the pre-established objects.
  • the blind 1 with windable fabric, object of the present invention allows moving the guide chain 7 between the retracted position and the extended position in a quick and easy manner, since the shaped pins 11 define the maneuvering distance with the grooves 12 in which they are housed, with the guide chain 7 in the intermediate position.
  • the guide chain 7 is structurally solid and entirely reliable in operation since the shaped pins 11 are locked in the grooves 12 with respect both to movements along the extension direction Z - since the pins 11 are locked to size in the corresponding grooves 12 with the guide chain in the extended and retracted positions - and with respect to transverse movements (parallel to the transverse direction X) due to the pins 11 housed in the grooves 12 and, preferably, due to the ribs 21 housed in the cavities 32 of the stopping means 20.

Claims (10)

  1. Chaîne de guidage pour un rouleau en tissu, destinée à être placée pour relier un montant latéral (3) et une barre de manipulation (6) sous un tissu (5) dudit rouleau, comprenant une pluralité d'éléments de guidage (8) liés ensemble le long d'une ligne d'extension (Z) et susceptibles d'être déplacés entre :
    - une position déployée, dans laquelle lesdits éléments de guidage (8) sont au moins partiellement déployés, alignés sous ledit tissu (5) de manière sensiblement horizontale, et
    - une position rétractée, dans laquelle lesdits éléments de guidage (8) sont au moins partiellement logés à l'intérieur de ladite barre de manipulation (6) alignés de manière sensiblement verticale ;
    entre ladite position rétractée et ladite position déployée, une position intermédiaire étant fournie dans laquelle ladite ligne d'extension (Z) forme au moins une courbe, dans laquelle lesdits éléments de guidage (8) sont inclinés les uns par rapport aux autres ;
    chaque élément de guidage (8) comprenant deux parois latérales (9) opposées sensiblement parallèles à ladite ligne d'extension (Z) et reliées par au moins un corps central (10) ;
    ladite chaîne de guidage étant caractérisée en ce que chaque élément de guidage (8) de ladite pluralité d'éléments de guidage (8) comprend :
    - au moins une goupille profilée (11) fournie sur au moins une desdites parois latérales (9), faisant saillie dans une direction transversale (X) par rapport à ladite ligne d'extension (Z) et munie d'une section transversale qui a une largeur (14), déployée de manière sensiblement parallèle à ladite ligne d'extension (Z), supérieure à une hauteur (15) de celle-ci déployée de manière sensiblement orthogonale à ladite ligne d'extension (Z), et
    - au moins une rainure (12), laquelle :
    - est aménagée sur au moins une desdites parois latérales (9) et reste définie entre au moins deux faces (23) ;
    - est déployée en partant d'une ouverture d'entrée (16) aménagée sur un pourtour (24) de ladite au moins une paroi latérale (9) dudit élément de guidage (8), et
    - loge la goupille profilée (11) d'un élément de guidage (8) contigu ;
    ladite goupille profilée (11) étant susceptible d'être arrêtée contre lesdites faces (23) avec ladite chaîne de guidage (7) dans la position rétractée et dans la position déployée et de définir une distance de manœuvre avec lesdites faces (23), avec la chaîne de guidage (7) dans ladite position intermédiaire.
  2. Chaîne de guidage selon la revendication 1, caractérisée en ce que lesdites faces (23) de ladite rainure (12) définissent une extension de ladite rainure (12), parallèle à la direction d'extension (Z), sensiblement égale à ladite largeur (14) de ladite section transversale de ladite goupille profilée (11).
  3. Rouleau en tissu, lequel comprend :
    - un cadre de support (2) qui est muni d'au moins deux montants latéraux (3, 3') et d'une traverse supérieure (22) pour délimiter une ouverture (A) qui doit être couverte,
    - au moins une barre de manipulation (6), laquelle est déployée de façon parallèle audits montants latéraux (3, 3') et est mobile de façon coulissante entre lesdits montants latéraux (3, 3') ;
    - au moins un tissu extensible (5), qui est déployé entre un premier bord latéral de celui-ci associé à un premier montant (3) desdits montants latéraux (3, 3') et un deuxième bord latéral de celui-ci opposé audit premier bord latéral associé à ladite barre de manipulation (6), et
    - au moins une chaîne de guidage (7) selon la revendication 1, ladite au moins une chaîne de guidage (7) placée pour relier ledit premier montant latéral (3) et ladite barre de manipulation (6) comprenant ladite pluralité desdits éléments de guidage (8) liés ensemble le long de ladite ligne d'extension (Z) ;
    ladite barre de manipulation (6) étant mobile entre :
    - au moins une position ouverte, dans laquelle ladite barre de manipulation (6) est placée dans une position proximale par rapport audit premier montant latéral (3) et dans laquelle ladite chaîne de guidage (7) est dans ladite position rétractée, dans laquelle lesdits éléments de guidage (8) sont au moins partiellement logés à l'intérieur de ladite barre de manipulation (6) alignés de manière sensiblement verticale, et
    - au moins une position fermée, dans laquelle ladite barre de manipulation (6) est placée dans une position distale par rapport audit premier montant latéral (3) et dans laquelle ladite chaîne de guidage (7) est dans ladite position déployée, dans laquelle lesdits éléments de guidage (8) de ladite chaîne de guidage (7) sont au moins partiellement déployés alignés sous ledit tissu (5) de manière sensiblement horizontale.
  4. Rouleau en tissu selon la revendication 3, caractérisé en ce que chaque élément de guidage (8) comprend des moyens d'arrêt (20) placés pour interférer mécaniquement avec un élément de guidage (8) contigu à ladite chaîne de guidage (7) dans la position déployée, afin d'arrêter la rotation relative desdits éléments de guidage (8).
  5. Rouleau en tissu selon la revendication 4, caractérisé en ce que lesdits moyens d'arrêt (20) de chaque élément de guidage (8) comprennent :
    - au moins une nervure (21) faisant saillie de façon parallèle à ladite direction d'extension (Z), et
    - au moins une cavité (32) aménagée dans ledit corps central (10) définie par une paroi de butée (35) susceptible de recevoir, en butée, ladite au moins une nervure (21) d'un élément de guidage (8) contigu.
  6. Rouleau en tissu selon l'une quelconque des revendications 3 à 5, caractérisé en ce que lesdites faces (23) définissent une extension de ladite rainure (12) parallèle à la direction d'extension (Z) sensiblement égale à ladite largeur (14) de la section transversale de ladite goupille profilée (11).
  7. Rouleau en tissu selon l'une quelconque des revendications 3 à 6, caractérisé en ce que le rapport entre ladite largeur (14) et ladite hauteur (15) de la section transversale de ladite goupille profilée (11) est compris dans l'intervalle de 1,1 à 1,5.
  8. Rouleau en tissu selon l'une quelconque des revendications 3 à 7, caractérisé en ce que lesdites parois latérales (9) comprennent deux convexités (17) correspondantes lesquelles font saillie à l'extérieur desdites parois latérales (9) parallèles à ladite direction transversale (X) ;
    ladite au moins une rainure (12) étant aménagée sur au moins une desdites convexités (17) et étant munie de la concavité orientée vers ledit corps central (10).
  9. Rouleau en tissu selon la revendication 8, caractérisé en ce que chaque paroi latérale (9) de chaque élément de guidage (8) de ladite chaîne de guidage (7) comprend deux parties saillantes (18), déployées et aménagées l'une en face de l'autre et parallèles à ladite direction d'extension (Z) ;
    ledit élément de guidage (8) comprenant :
    - deux goupilles profilées (11), chacune fournie sur une partie saillante (18) correspondante desdites parois latérales (9) et faisant extérieurement saillie par rapport audit corps central (10), et
    - deux rainures (12), chacune aménagée sur une convexité (17) correspondante, avec la concavité orientée vers ledit corps central (10) et déployée entre ladite ouverture d'entrée (16) et une paroi inférieure (19) opposée à ladite ouverture d'entrée (16) et susceptible de recevoir, en butée, une goupille profilée (11) correspondante d'un élément de guidage (8) contigu.
  10. Rouleau en tissu selon la revendication 9, caractérisé en ce que ladite goupille profilée (11) de chaque élément de guidage (8) est munie de :
    - une section transversale sensiblement ovale, et
    - une denture (13) faisant radialement saillie le long d'une direction sensiblement orthogonale par rapport à ladite direction transversale (X), susceptible de venir en butée contre ladite paroi inférieure (19) avec ladite barre de manipulation (6) dans les positions déployée et rétractée.
EP19173717.0A 2018-05-10 2019-05-10 Chaîne de guidage pour rouleau en tissu Active EP3567205B1 (fr)

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Publication number Priority date Publication date Assignee Title
US6186212B1 (en) 1998-06-11 2001-02-13 Metaco Inc. Screen device
JP6000807B2 (ja) 2012-11-05 2016-10-05 株式会社メタコ スクリーン装置のスライドガイド枠部
KR101358945B1 (ko) * 2013-10-10 2014-02-07 주식회사 제이에스스크린 출입문용 방충망의 캐터필러 구조

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