FR2966862A1 - CLOSURE OR SOLAR PROTECTION INSTALLATION, AND METHOD FOR IMPLEMENTING SUCH INSTALLATION - Google Patents

Abstract

The present invention relates to an installation (10) closing or sun protection, including roller shutter, comprising an apron (18) having a plurality of shutter blades (20), each shutter blade being pivotable about an axis pivoting member (Y) defined by at least one lateral shaft (60) extending laterally from a first edge of the shutter blade (20), two chains (40) arranged laterally on either side of the apron and movable in translation along a deployment axis (X) perpendicular to the pivot axis (Y), each chain supporting a lateral shaft of each shutter blade, and means for inclining at least one active blade (21 ), among the shutter blades, from a rest position in which a second edge of the active blade is brought closer to or in contact with the first edge of an adjacent deck blade, to an inclined position in which the second edge of the active blade is removed from the first edge of the adjacent blade by rotating the active blade about its pivot axis (Y). This installation (10) is characterized in that the inclining means comprise an activation strip (80) extending parallel to the deployment axis (X), and a cam (70) pivotally mounted on a lateral shaft each active and cooperating blade, on the one hand, with the activation strip and, on the other hand, with a portion (68) integral in rotation with the active blade, so as to cause the rotation of this active blade during specific movements of the chain.

Description

CLOSURE OR SOLAR PROTECTION INSTALLATION, AND METHOD FOR IMPLEMENTING SUCH INSTALLATION

The present invention relates to a closure or sun protection system. The invention also relates to a method for implementing a closure or sun protection system. The field of the invention is that of roller shutter type installations, designed to equip a building opening such as a door or a window arranged in a wall or a roof. Conventionally, a shutter comprises an apron wrapped around a tree and which takes place between two scenes to hide the window. In practice, a manual or electric action allows to maneuver the rolling shutter downhill or uphill. In the case of a sliding shutter apron, a specific mechanism is generally provided for inclining the blades relative to the plane of the deck. EP-A-0 141 805 discloses a roller shutter with steerable blades, comprising a chain movable in translation in a slide. Each blade constituting the shutter apron is secured to a rod which cooperates with the chain through complementary threaded profiles. Inside the slide, a rail cooperating with the chain can be moved in translation by an auxiliary actuator, in a direction parallel to the deck and perpendicular to the direction of rise and fall of the chain. The movement of the rail causes a movement of the chain and therefore a rotation of each rod due to the cooperation of complementary threaded profiles. Thus, the movement of the rail causes the inclination of the shutter blades secured to the rods. The mechanical forces transmitted between the different parts can cause rapid wear of these parts. In addition, such a shutter requires a first actuator to move the deck and a second actuator to move the rail in the slide, which is expensive and bulky. The purpose of the present invention is to provide an improved roller shutter, in particular to guide the blades while being simple, economical and compact.

For this purpose, the subject of the invention is a closure or sun protection system, in particular of the shutter type, comprising: an apron comprising a plurality of shutter blades, each shutter blade being capable of pivoting about an axis of pivoting defined by at least one lateral shaft extending laterally from a first edge of the shutter blade, two chains arranged laterally on either side of the deck and movable in translation along an axis of deployment perpendicular to the pivot axis, each chain supporting a lateral shaft of each shutter blade, and - means for inclining at least one active blade, among the shutter blades, from a rest position in which a second edge of the shutter blade active blade is brought closer or in contact with the first edge of an adjacent blade of the apron, towards an inclined position in which the second edge of the active blade is separated from the first edge of the adjacent blade by ro tation of the active blade around its pivot axis.

This installation is characterized in that the inclination means comprise at least: an activation strip extending parallel to the deployment axis, and a cam pivotally mounted on a lateral shaft of each active and cooperating blade, on the one hand, with the activation strip and, on the other hand, with a portion integral in rotation with the active blade, so as to cause the rotation of this active blade during specific movements of the chain. Thus, the invention allows to tilt the blades in a simple manner, regardless of the position of the deck. The installation of roller shutter according to the invention does not require additional actuator, in addition to the motor used to raise and lower the deck. The tilting means are arranged in the slide of the installation, which protects them from the weather and thus slows down their aging, while providing a great discretion and a neat aesthetic to the shutter. Since the operation of the tilting means does not depend on the relative positioning between the blades and a mechanism internal to the slide, the length of the slides can therefore be freely modified during assembly. No auxiliary mechanism is grafted on the blades, or on the slides that are monobloc. Installation of the installation is carried out as on a standard rolling shutter with non-steerable blades, without requiring complex adjustment operation, and the exposure time is reduced. According to other advantageous features of the invention, taken separately or in combination: the inclining means also comprise, for each cam, an abutment element constituting a part integral in rotation with the active blade and cooperating with the cam, which is secured to the lateral shaft in rotation about the pivot axis, and a drive element which is integral with the cam and which is adapted to cooperate with the stop element to jointly move the cam, the lateral shaft and the blade activates in rotation about the pivot axis; the stop element is a pin which extends from the lateral shaft along a radial stop axis with respect to the pivot axis and the drive element is a finger which extends from a lateral surface of the cam along a drive axis parallel to the pivot axis; the inclining means also comprise a spring which is positioned on the lateral shaft and which exerts on the driving element a variable force as a function of the rotation of the cam; each cam cooperating with the activation strip has an outer surface with at least two friction zones on the strip which have different coefficients of friction on a surface of the strip on which the cam slides during the translation of the chains according to the deployment axis; the chain comprises rollers capable of rolling on a bearing surface arranged in an interior space of a guide guide of the chain, the bearing surface being situated opposite a surface of the strip; activation cooperating with each cam; each roller is of deformable material, capable of crashing against the bearing surface when each cam cooperates with the activation strip; the activation strip is made of deformable flexible material, in particular an elastomer such as silicone foam; - The activation strip is reported in a slide disposed on one side of the deck; the two lateral shafts pass through the first edge of each shutter blade and form a one-piece through rod; the tilting means are configured to tilt each active blade during a translation of the chains along the axis of deployment in a rising direction of the apron, whatever the position of the deck, provided that at least one blade is arranged in an active area of the installation defined between two slides; the tilting means are configured, on the one hand, to keep each active blade in the rest position during the movement of the chain in a first downward direction of the apron and, on the other hand, to move each active blade to the inclined position by rotation of the lateral shaft about the second axis during the movement of the chain in a second upward direction of the deck. the installation comprises a single actuator configured to move the chain and the blades in translation selectively in a first downward direction of the apron or in a second upward direction of the apron and to move each active blade from its rest position to its position inclined; the installation comprises on each of its left and right sides, in symmetry with respect to a median plane parallel to the first axis and perpendicular to the second axis: a chain movable in translation parallel to the first axis, an end of a shaft associated with each shutter blade and extending along the second axis, and - a guide slide of the chain which extends along the first axis and in which are arranged the inclination means associated with one or more active blades, especially when the active blade (s) are in an inclined position. The subject of the invention is also a method for implementing a closure or sun protection system, in particular of the shutter type, this installation comprising: an apron comprising a plurality of shutter blades, each shutter blade being capable of pivoting about a pivot axis defined by at least one lateral shaft extending laterally from a first edge of the shutter blade, - two chains arranged laterally on either side of the deck and movable in translation according to a deployment axis perpendicular to the pivot axis, each chain supporting a lateral shaft of each shutter blade, - means for inclining at least one active blade, among the shutter blades, from a rest position to an inclined position, by rotation of the active blade about its pivot axis, the method comprising the following steps: a) moving the chain in translation in a first direction with the aid of e the actuator, keeping each active blade in the rest position, b) moving the chain in translation in a second direction opposite to the first direction using the actuator, and c) moving each active blade to the position inclined by rotation of the shaft of this active blade around the second axis, the method being characterized in that step c) is performed using the actuator of steps a) and b), simultaneously with step b) and independently of the position of the deck, provided that at least one blade is disposed in an active area of the installation defined between two slides. The invention will be better understood on reading the description which will follow, given solely by way of nonlimiting example and with reference to the drawings in which: FIG. 1 is a partial perspective view of an installation conforming to FIG. the invention, shown in a partially lowered configuration of its flap, some parts not being represented for purposes of simplification; Figure 2 is a front view of the installation of Figure 1; - Figure 3 is a section along the line III-III in Figure 2; Figure 4 is an enlarged view of detail IV in Figure 3, showing in particular the interior of a slide belonging to the installation; Figure 5 is a side view of the installation according to the arrow V in Figure 4, the slide is not shown; Figure 6 is a perspective view of the installation according to the arrow VI in Figure 1, the slide being only partially represented; Figures 7 and 8 are views similar respectively to Figures 5 and 4, showing the installation in a configuration where the inclination of the blades will begin; - Figures 9 and 10 are views similar respectively to Figures 7 and 8, showing the installation in a configuration where the blades are inclined; Figure 11 is a partial perspective view of the installation in the configuration of Figures 9 and 10; Figure 12 is a partial broken perspective view of an installation according to a second embodiment of the invention, shown in a descent configuration; and FIG. 13 is a view similar to FIG. 4 for the installation of FIG. 12. FIGS. 1 to 11 show an installation 10, according to the invention, of closure or sun protection, in this case rolling shutter type.

In order to facilitate the identification of the various parts of the installation 10 in the space, an interior side 11 turned towards the interior of the building, not shown, of which the installation 10 makes it possible to seal an opening, an outer side 12 opposite to the inner side 11, a left side 13, a right side 14, an upper side 15 and a lower side 16.

The installation 10 comprises a shutter apron 18 consisting of shutter blades 20 and, on each left-hand side 13 and right-hand side 14 of the deck 18, a chain 40 consisting of a plurality of links 42 which are translatable along an axis of deployment X to FIG. The slider 30 and the chain 40 on the right side 14 are shown, while the slider and chain on the left side 13 are not shown. Indeed, the installation 10 is symmetrical with respect to a median plane Pm, except the motor and its connecting members to the winding tube, not shown. The installation 10 also comprises means for inclining the blades 20, which are arranged on each left 13 and right side 14 of the apron 18. These inclination means include, for each blade 20, a lateral shaft 60 with one end 62 provided with a stop 68, a cam 70 mounted on the end 62 and having a finger 78, and a spring 90 mounted on the end 62 between the stop 68 and the finger 78. Thus, each cam 70 is equipped with its finger 78 driving the abutment 68 and the shaft 60 during a particular movement of the cam 70, as described below.

Each blade 20 has a first edge 20a, a shaft 60 being disposed laterally on each left side 13 and right 14 of this 20a. This first edge 20a is oriented on the upper side 15, opposite a second edge 20b oriented on the lower side 16. Thus, in the rest position of the blades 20 of the apron 18, each edge 20a is brought closer to a neighboring edge 20b, or even each edge 20a is in contact with this adjacent edge 20b. Alternatively, the side shafts 60 can cross the edge 20a over its entire width, along a pivot axis Y which is perpendicular to the deployment axis X, to form a one-piece through rod. The upper part of the installation 10, comprising a box in which is housed a winding tube, is not shown, the upper side 15. Also, the box houses a drive motor of this tube, this motor being Diagrammatically represented by an actuator block A10 in dashed lines in FIGS. 1, 2, 11 and 12. Alternatively, this actuator may be a part of a conventional manual control system adapted for raising and lowering the apron 18.

The two chains 40 are fixed to the winding tube of the upper side 15. Thanks to the actuator A10, the chains 40, on the one hand, wind and unwind around the winding tube and on the other hand slide in the wings 30. The chains 40 connect the blades 20 to one another by cooperating with the shafts 60, and thus make it possible to move the apron 18. In other words, in operation of the installation 10, the apron 18, of a on the other hand, translates into a plane P18 which extends between the slides 30. Thereafter, only the elements located on the right side 14 are described . The slide 30 extends along the X axis, from an upper end 35 to a lower end 36. As shown in particular in Figure 4, the slide 30 has a hollow profile which defines an interior space 32. In this 32, the slide 30 comprises a flat surface 34 and a housing 38 for receiving an activation strip or friction adhesive strip 80. The surface 34 is turned towards the inner side 11, while the housing 38 is open by direction of the outer side 12. The other dimensions of the slide 30 and its space 32 are provided to prevent contact with moving parts, while maintaining a small footprint.

On the side of the space 32 open and facing the blades 20, on either side of the shaft 60, the slide 30 has edges 33, preferably adapted to receive brush type joints, not shown. These seal-brushes make it possible in particular to maintain the components of the tilt mechanism located inside the slideway 30 away from dust and weather and, alternatively, to thermally and acoustically isolate the interior 32 of the slider 30 relative to the outside. In practice, the slider 30 is generally fixed to the building, in particular to the table of a window, by making a bore along the Y axis of a wall of the slider or a not shown wing extending this wall along the axis. Y. In particular, an "active" zone 17 delimited between the slides 30 is considered, in which the chain 40 translates along the axis X, ie in a first direction D1 of unwinding of the deck 18 towards the lower side 16, or in a second direction D2, opposite to the direction D1, of the apron 18 rising on the winding tube towards the upper side 15. In fact, this active zone 17 stops a few centimeters below the upper end 35 slides 30, to allow the blades 20 to return to the plane P18 before entering the winding box during the ascent of the deck 18. This area 17 is identified by a dashed border in Figure 2. In the acti area 17, the blades 20 movable in translation parallel to the plane P18 can be actuated by the tilting means and are then designated as active blades 21, potentially inclinable, or inclined blades 22. In particular, an active blade 21 is considered as such when the shaft 60 and the cam 70 associated enter the active area 17, as shown in Figures 5 and 6. Furthermore, it is noted that the blades 20 are slightly curved on the inner side 11, between the edges 20a and 20b. Also the blades 20 are provided with overlapping bibs 29 on their lower edges 20b. These flaps 29 contribute to the concealment of the opening on which the installation 10 is mounted, both in the rest position and in the inclined position of the blades 20. As shown in FIG. 6, link 42 of the chain 40 presents a curved "H" profile on the inner side 11, with a medial portion 43 which forms the central portion of the H, an upper end 45 provided with upper ears 451 and 452, and a lower end 46 with lower ears 461 and 462. The lugs 451, 452, 461 and 462 project from the middle portion 43 on their respective sides, and are configured to cooperate with the corresponding ears of a neighboring link 42. Each lug 451 to 462 has a cylindrical orifice 47 through, so that four corresponding orifices 47 extend coaxially along an axis Y47 parallel to the axis Y of the shafts 60. Between the upper ears 451 and 452 is formed a central housing 454. In the the middle portion 43 is delimited a through hole 44, closer to the upper end 45 than the lower end 46, which extends along the Y axis and is shown in dashed lines in Figure 4. Moreover, each link 42 of the chain 40 is provided with a roller 50 which rolls on the surface 34 inside the slide 30. Each roller 50 has a central portion 54 and side portions 56. These portions 54 and 56 are cylindrical, the diameter of the portion 54 being greater than the diameter of the portions 56. The portion 54 is protruding from the housing 454 and bears on the surface 34, while the parts 56 are pivotally mounted in the orifices 47 provided for this purpose in the Links 42. In other words, the parts 56 of the rollers 50 constitute axes of articulation of two adjacent links 42 joined at their ears 451, 452, 461 and 462. Each link 42 is traversed by one of the cylindrical shafts. 60 which is pivotally mounted along the axis Y in the orifice 44. Thus, the shaft 60 and the associated blade 20 are integral with the chain 40 in translation along the axis X, while being able to pivot around the Y axis. The end 62 of the shaft 60 is disposed in the inner space 32 of the slide 30, opposite the blade 20 and closer to the right outer side 14 than the chain 40, as shown in particular to Figures 3 and 4. The stop 68 arranged at the end 62 is of substantially cylindrical shape and extends from the end 62 along an axis A68 radial with respect to the axis Y. In practice, this axis A68 is movable in a plane parallel to the plane Pm during the rotation of the shaft 60. A cam 70 is mounted at each end 62 of each shaft 60, between the chain 42 and the stop 68, so that the cam 70 is integral with translation of the associated shaft 60. The cam 70 has an inner flat face 71, an outer flat face 72, an internal orifice 73 shown in dotted line in FIG. 4 which passes through the cam 70 between the faces 71 and 72, and a profiled outer surface 74. The faces 71 and 72 are parallel to each other and perpendicular to the Y axis. The shaft 60 passes through the orifice 73 along the Y axis, so that the cam 70 can pivot around the shaft 60, in a first direction of rotation. rotation R1 or in a second direction of rotation R2, as shown in FIGS. 5 to 7 and 9.

In practice, the profiled surface 74 is intended to cooperate with a friction surface 81 of the activation strip 80, with a variable friction contact depending on the orientation of the cam 70 by rotation about the Y axis. For this purpose, the profiled surface 74 comprises different friction zones 75, 76 and 77 intended to interact with the activation band 80, the particularities of which will be detailed below in connection with the successive operating phases.

A cylindrical ring 99, traversed by the shaft 60, is interposed between the face 71 of the cam 70 and the link 42. This ring 99 allows in particular to position the cam 70 on the shaft 60 along the axis Y. Thus, on the one hand, the surface 74 is positioned accurately relative to the band 80 and, on the other hand, the finger 78 is accurately positioned relative to the stop 68.

A spiral return spring 90, or torsion spring, is fixed to the end 62 of the shaft 60, between the stop 68 and the face 72 of the cam 70. In the extension of its winding around the end 62, the spring 90 has an elongate portion 91 which cooperates with the finger 78. The spring 90 thus exerts on the cam 70 and through the finger 78, an elastic torque which tends to rotate the cam about the Y axis clockwise in FIG. 5. The spring 90 also has the function of damping the vibrations between the shafts 60 and the cams 70 associated with the blades 20. The finger 78 is substantially cylindrical in shape and protrudes perpendicularly to the surface 72, along an axis Y78 parallel to the Y axis and rotatable about this axis Y. In practice, the finger 78 is therefore able, on the one hand, when the cam 70 pivots in the direction of rotation R1, pressing the portion 91 which then deflects in a plane perpendicular to the axis Y78, and, d on the other hand, pressing against the stop 68 when the cam 70 pivots in the direction of rotation R2. The activation strip 80 is composed of a deformable material, such as silicone foam, or any type of elastomer suitable for the present application. The cams 70 frictionally cooperate with this band 80, at its surface 81 which is deformable, differentially as the deck 18 moves in the direction D1 or in the direction D2. Indeed, the coefficient of friction between the cam 70 and the band 80 varies as a function of the friction zone 75, 76 or 77 of the cam 70 which is in contact with the surface 81. In particular, as shown in FIGS. 7 and 9, the profiled surface 74 is such that a radius r75 defined parallel to the median plane Pm between the axis Y and the zone 75 is less than a radius r76 defined between the axis Y and the zone 76. Figures 5 and 6, the cam 70 is at rest when it is located outside the slide 30, that is to say outside the active zone 17. During the descent phase of the deck 18 in the direction D1 under the action of the actuator A10, the blades 20 and the chains 40 are unwound from the winding tube, which is located on the upper side 15 of the installation 10, then translate in the direction D1. For each cam 70 in the rest position, located outside the active zone 17 of the upper side 15, the spring 90 plates the finger 78 against the abutment 68 integral with the shaft 60, as shown in the upper part of FIG. the entrance of the slide 30 of the upper side 35, the rollers 50 roll on the surface 34 and the cams 70 come into contact with the band 80. The rollers 50 block the transverse displacement of the links 42, shafts 60 and blades 20 , that is to say their displacement perpendicular to the translation plane P18 of the apron 18. Consequently, the cam 70 abuts against the activation band 80 at the zone 75 and is disengaged by pivoting in the direction R1, that is to say, approaching the outer side 12.

As shown in FIG. 5, while the chain 40 drives the cam 70 in the direction D1, the friction between the cam 70 and the band 80 is such that a reaction force F80 is exerted on the zone 75. same time, the spring 90 is compressed, with the portion 91 which deforms under the action of the finger 78 by exerting a reaction force F91 against the finger 78. In practice, the torque exerted on the cam 70 by the force F80 in the direction R1 is greater than the torque exerted on the cam 70 by the force F91. Thus, throughout the descent in the slide 30, the cam 70 slides on the strip 80 in the direction D1, while being subjected to the action of the spring 90. As the force F80 is low compared to the thrust exerted on the chain 40 by the actuator A10 during the descent of the deck 18, as well as the own weight of the deck 18 and the chain 40, the friction of the zone 75 on the surface 81 does not interfere with the descent of the deck 18 in the direction D1. As shown in FIGS. 7 and 8, when it is decided to orient the blades 20, a first pulse of the actuator A10 generates a pulling force of the chain 40 upwards, which tends to raise the next deck 18 the direction D2. Each link 42 is driven by an X axis translation movement in the direction D2 and drives the next link 42 of the chain 40, below, while the rollers 50 located in the slide 30 roll on the surface 34 The spring 90 then exerts a return torque on the cam 70 which is blocked transversely by the roller 50, so that this cam 70 adheres and gradually sinks into the deformable band 80 by pivoting in the direction R2. More specifically, the friction zone 76 comes into contact with the surface 81 in replacement of the zone 75, and sinks into the strip 80 as shown in FIGS. 7 and 8. This zone 76 is configured to present a coefficient of friction, with the surface 81 of the activation strip 80, which is greater than the coefficient of friction of the zone 75. For this purpose, the surface 74 is such that the radius r76 is greater than the radius r75 and / or the surface roughness of zone 76 is greater than the surface roughness of zone 75.

In other words, the band 80 deforms by crashing under the pressure of the zone 76, thus creating an obstacle to the rise of the cam 70 in the direction D2, which prevents this cam 70 from sliding on the surface 81 and forces it to pivot about the Y axis in the R2 direction.

Thus, the vertical translation movement of the chain 40 is coupled to three phenomena: the locking in transverse translation of the chain 40 and the cams 70 by the rollers 50, the torque exerted by the return spring 90 on the cams 70 , and the relatively high coefficient of friction between the zone 76 of the cam 70 and the band 80.

In other words, the raising of the chain 40 by the actuator A10 causes an arching of the cam 70, which causes the rotation of the cam 70 in the direction R2 until the drive finger 78 comes to touch the abutment 68 integral with the shaft 60. When the drive finger 78 returns to contact with the abutment 68, the cam 70 has rotated 45 ° in the direction R2, and the depression of the cam 70 in the band 80 is maximum. This configuration is shown in FIG. 7. As shown in FIGS. 9 to 11, if the actuator A10 continues to pull the chain 40 in the direction D2, the orientation phase of the active blades 21 by the tilting means begins. The drive finger 78 exerts a force F78 on the abutment 68, thus causing the rotation of the shaft 60 in the direction R2 and thus the inclination of the associated active blade 21. In addition, the reaction force of the band 80 on the cam 70 is insufficient to oppose the force F78 and prevent the rotation of the inclined blades 22. In fact, at the same time, the radius of the cam 70 in contact with the web 80 progressively decreases, so that the plane zone 77 replaces the zone 76 of maximum adhesion in contact with the surface 81.

Thus, the orientation of each inclined blade 22 is stabilized at an angle 13 relative to the plane P18 of the deck 18, resulting from the particular configuration of the profiled outer surface 74 of the cams 70. In particular, this angle 13 defined between the A68 axis and the plane P18 is equal to approximately 45 °, and is preferably between 30 ° and 60 °, depending on the geometry of each cam 70. The edge 20b of each blade 22 deviates from the plane P18 and the edge 20a of the next blade 22 of the apron 18. At this stage, if the actuator A10 continues to raise the deck 18 in the direction D2, the zone 77 of the cam 70 slides on the activation strip 80. Indeed, this zone 77 has a low coefficient of friction in comparison with the zone 76 which was forced to penetrate into the strip 80 prior to the orientation of the inclined blades 22. As can be seen in FIGS. 7 to 10, the transverse spacing, perpendicular to the plan

12 P18, between zone 77 and surface 34 is reduced. In other words, the flat zone 77 has a large bearing surface and does not penetrate the band 80. In practice, the blades 20 of the deck 18 are not all reclining, only the active blades 21 located in the zone active 17 at the slide 30 can be oriented as inclined blades 22. However, the transition from the rest position of the blades 21 to the inclined position of the blades 22 can be performed regardless of the position of the deck 18 between the scenes 30, and this continuously. Subsequently, when the apron 18 rises in the direction D2, the blades 20 exit successively from the active zone 17 and the cams 70 are released again. In this case, the tilting means of each blade 20 successively leaving the active zone 17 no longer hold this blade 20 in an inclined position, with an angle orientation 3. Each cam 70 leaving the inner space 32 of the slide 30 , as well as the shaft 60 and the blade 20 associated with this cam 70, then rotate in the direction R1. The blades 20 return by gravity in the rest position.

In variant not shown, to ensure a good return of the blades 20 in the rest position, a guide device of the funnel type can be installed on the upper side 15 of the active zone 17, for example at the entrance of the box. According to another variant not shown, the rollers 50 may be of deformable material, for example of the elastomer type, capable of crashing against the bearing surface 34 when the cams 70 cooperate with the activation band 80. In this case the band 80 is not necessarily of deformable material. In other words, rather than the cams sinking into the band 80, the resulting efforts of displacements of the cams 70 on the surface 81 of the band 80 cause crushing of the rollers 50. According to another variant not shown, each shaft 60 does not is not provided with a stop pin 68 and / or each cam 70 is not provided with a drive finger 78. Indeed, the tilting means of the active blades 21 may be configured differently. For example, the spring 90 attached to the end 62 of the shaft 60 may comprise a folded portion so as to form a stop element similar to the stop pin 68, this stop element being integral with the rotating shaft 60 around the pivot axis Y. In another example, the abutment element is formed by bending the end 62 of the shaft 60. In another example, the cam 70 may comprise on its face 72 a a recess or a boss forming a drive element, for the stop element, similar to the drive finger 78. In other words, the tilting means are configured so that the cam 70 cooperates with a portion integral with rotation of the active blade 21, so as to cause this active blade 21 to rotate around the pivot axis Y during specific movements of the chain 40. In FIGS. 12 and 13 is partially shown a second embodiment of FIG. an installation 11 0 according to the invention.

Some elements of the installation 110 are identical to the constituent elements of the installation 10 of the first embodiment, described above, and bear the same references. These are the actuator A10, the apron 18, the blades 20, the rollers 50, the cams 70, the band 80, the spring 90, the translation directions D1 and D2, as well as the directions of rotation R1. and R2.

Other elements have a similar operation, but a different structure, compared with the first embodiment. This is the slide 130 having an interior space 132, edges 133, a surface 134 of the rollers 50, a housing 138 for the activation strip 80, the shaft 160 with an end 162 and a stop 168, of the chain 140 composed of links 142 each having a median portion 143, orifices 144 for the passage of the shaft 160, an upper end 145, a lower end 146, orifices 147 for supporting the lateral parts 56 of the roller 50 In particular, each link 142 has a recess 149 in its middle part 143. In this recess 149 are arranged the cam 70, the finger 78, the abutment 168 and the spring 90. In other words, the positioning of the tilting means blades 20 in the slide 130 is different, but their operation is similar to the first embodiment. The stop 168 is closer to the end 162 than the stop 68 of the first embodiment. The shaft 160 pivots in the directions R1 or R2 being supported by two orifices 144 of the link 142, on either side of the cam 70, which limits the overhang on the end 162 when the cam 70 slips frictionally on the strip 80. The transverse guidance of the apron 18 inside the slide 130 is provided by the links 142 and the rollers 50. Compared with the previous embodiment, the installation 110 is more compact , more resistant and its assembly is facilitated.

Whatever the embodiment, the installation 10 or 110 according to the invention does not require any auxiliary power source, in addition to the actuator A10, to guide the shutter blades 21. As soon as the deck 18 goes back in in the direction D2, the cams 70 present in the active zone 17 of the slide 30 or 130 rotate the active blades 21. No obstacle connection is used to guide the blades 21, that is to say that there is no mechanism permanently present in the slider 30 to actuate the cams 70 and the shafts 60 or 160, with the exception of the activation strip 80.

During assembly of the installation 10 or 110, the length of the slides 30 or 130 can therefore be modified at will, in particular to adjust the height of the active zone 17 where the blades 20 are tilted during a movement of the apron 18. Unlike a roller shutter installation using tensile rods for orienting the blades, the installation 10 or 110 according to the invention does not require to hang a specific mechanism on the upper blade in order to exert a traction force on this blade, according to a maneuver that can be done only when the deck is lowered to the maximum. Furthermore, the installation 10 or 110 is designed to minimize the size of the parts that make the junction between the interior of the slide 30 and the outside environment. This function is provided solely by the shafts 60 or 160, without any control rod protruding from the box or slides. According to the invention, the upward movement of the deck 18 by the actuator A10, coupled with the adhesion of the cams 70 against the strip 80 disposed inside each slide 30 or 130, is sufficient to orient the blades 21. The means inclination are configured to incline each active blade 21 during a translation of the chain 40 or 140 along the first axis X, in the upward direction of the apron 18.

Claims (1)

CLOSURE.-Installation (10; 110) closure or sun protection, including roller shutter, comprising: - an apron (18) having a plurality of shutter blades (20), each shutter blade being pivotable around a pivot axis (Y) defined by at least one lateral shaft (60; 160) extending laterally from a first edge (20a) of the shutter blade (20), - two chains (40; 140) disposed laterally on either side of the deck (18) and movable in translation along a deployment axis (X) perpendicular to the pivot axis (Y), each chain (40; 140) supporting a lateral shaft (60; 160) of each shutter blade (20), and - tilting means (68, 70, 78, 80, 90, 168, 70, 78, 80, 90) of at least one active blade (21), among the shutter blades (20), from a rest position in which a second edge (20b) of the active blade (21) is brought closer to or in contact with the first edge (20a) of an adjacent blade of the apron (18), to an inclined position in which the second edge (20b) of the active blade (21) is spaced from the first edge (20a) of the adjacent blade by rotation (R2) of the active blade (21) around its pivot axis (Y), characterized in that the inclination means comprise at least: - an activation band (80) extending parallel to the deployment axis (X), and - a cam (70) pivotally mounted on a lateral shaft (60; 160) of each active blade (21) and cooperating on the one hand with the activation band (80) and on the other hand with a portion (68; the active blade (21), so as to cause the rotation (R1; R2) of this active blade (21) during specific movements of the chain (40; 140). 2.- Installation according to claim 1, characterized in that the inclining means (68, 70, 78, 80, 90; 168, 70, 78, 80, 90) also comprise, for each cam (70): an abutment element (68; 168) constituting a rotationally integral part (R1; R2) of the active blade (21) and cooperating with the cam (70) which is integral with the lateral shaft (60; 160); rotation (R1; R2) about the pivot axis (Y), and - a driving element (78) which is integral with the cam (70) and which is adapted to cooperate with the stop element (68). 168) for jointly moving the cam (70), the lateral shaft (60; 160) and the active blade (20) in rotation (R2) about the pivot axis (Y). 3. Installation according to claim 2, characterized in that the stop element (68; 168) is a pin which extends from the lateral shaft (60; 160) along a stop axis (A68). radial to the pivot axis (Y) and in that the drive member (78) is a finger extending from a side surface (72) of the cam (70) along an axis of drive (Y78) parallel to the pivot axis (Y). 4.- Installation according to one of claims 2 or 3, characterized in that the inclining means (68, 70, 78, 80, 90; 168, 70, 78, 80, 90) also comprise a spring (90 which is positioned on the lateral shaft (60; 160) and which exerts on the drive element (78) a variable force (F91) as a function of the rotation (R1; R2) of the cam (70). 5.- Installation according to one of the preceding claims, characterized in that each cam (70) cooperating with the activation strip (80) comprises an outer surface (74) with at least two zones (75, 76, 77). of friction on the web (80) which have different coefficients of friction on a surface (81) of the web (80) on which the cam (70) slides during the translation of the chains (40; 140) along the axis deployment (X). 6. Installation according to one of the preceding claims, characterized in that the chain (40; 140) comprises rollers (50) able to roll on a bearing surface (34; 134) arranged in an interior space (32). 132) of a guide slider (30; 130) for the chain (40; 140), the bearing surface (34; 134) being located opposite a surface (81) of the activation strip (80) cooperating with each cam (70). 7.- Installation according to claim 6, characterized in that each roller (50) is of deformable material, capable of crashing against the bearing surface (34; 134) when each cam (70) cooperates with the band of activation (80). 8.- Installation according to one of claims 1 to 6, characterized in that the activation strip (80) is flexible deformable material, in particular elastomer such as silicone foam. 9.- Installation according to one of the preceding claims, characterized in that the activation strip (80) is reported in a slide (30) disposed on one side of the deck (18). 10.- Installation according to one of the preceding claims, characterized in that the two side shafts (60) pass through the first edge (20a) of each shutter blade (20) and form a one-piece through rod. 11.- Installation according to one of the preceding claims, characterized in that the inclining means (68, 70, 78, 80, 90; 168, 70, 78, 80, 90) are configured to incline each active blade ( 21) during a translation of the chains (40; 140) along the deployment axis (X) in a direction (D2) upstream of the deck (18), whatever the position of the deck (18), so far at least one blade (21) is disposed in an active zone (17) of the plant (10; 110) defined between two slides (30; 130). 12.- Installation according to one of the preceding claims, characterized in that the inclining means (68, 70, 78, 80, 90; 168, 70, 78, 80, 90) are configured, on the one hand, to maintain each active blade (21) in the rest position during movement of the chain (40; 140) in a first downward direction (D1) of the deck (18) and, secondly, to move each active blade (21) to the rotational inclined position (R2) of the side shaft (60; 160) about the second axis (Y) during movement of the chain (40; 140) in a second upward direction (D2) of the apron (18). 13.- Installation according to one of the preceding claims, characterized in that it comprises a single actuator (A10) configured to move the chain (40; 140) and the blades (20) in translation selectively in a first direction (D1 ) for lowering the apron (18) or in a second direction (D2) for raising the apron (18) and for moving each active blade (21) from its rest position to its inclined position. 14.- Installation according to one of the preceding claims, characterized in that it comprises on each of its left and right sides (13, 14), in symmetry with respect to a median plane (Pm) parallel to the first axis (X ) and perpendicular to the second axis (Y): - a chain (40; 140) movable in translation parallel to the first axis (X), - an end (62; 162) of a shaft (60; 160) associated with each blade flap (20) and extending along the second axis (Y), and - a guide slide (30; 130) of the chain (40; 140) which extends along the first axis (X) and in which the tilting means (68, 70, 78, 80, 90; 168, 70, 78, 80, 90) are associated with one or more active blades (21), in particular when the active blade (s) (21) are in an inclined position. 15. A method for implementing a closure or sun protection system (10; 110), in particular of the shutter type, this installation comprising: an apron (18) comprising a plurality of shutter blades (20), each shutter blade being pivotable about a pivot axis (Y) defined by at least one lateral shaft (60; 160) extending laterally from a first edge (20a) of the shutter blade (20); ), two chains (40; 140) arranged laterally on either side of the deck (18) and movable in translation along a deployment axis (X) perpendicular to the pivot axis (Y), each chain (40) 140) supporting a lateral shaft (60; 160) of each shutter blade (20), - tilting means (68, 70, 78, 80, 90; 168, 70, 78, 80, 90) of at least one active blade (21), among the shutter blades (20), from a resting position to an inclined position, by rotation (R2) of the active blade (21) about its pivot axis ( Y), the method comprising the following steps: a) moving the chain (40; 140) in translation in a first direction (D1) by means of the actuator (A10), keeping each active blade (21) in the rest position, b) moving the chain (40; second direction (D2) opposite the first direction (D2) with the actuator (A10), and c) moving each active blade (21) to the rotational inclined position (R2) of the shaft (60). 160) of this active blade around the second axis (Y), the method being characterized in that step c) is performed using the actuator (A10) of steps a) and b), simultaneously with the step b) and independently of the position of the apron (18), provided that at least one blade (21) is disposed in an active zone (17) of the installation (10; 110) defined between two slides (30; 130 ).