EP4071332A1 - Protection system with windable fabric - Google Patents

Abstract

The invention relates to a protection system comprising:
- At least one rollable canvas (1) comprising a first edge and a second edge opposite the first edge,
- Two guide bars (3a, 3b), positioned to define a guide plane (P) of the canvas,
- A winding drum (10) to which the first edge of the fabric (1) is fixed,
- A transverse load bar (5) fixed to the second edge of the canvas (1) to pull the canvas (1),
- At each end of the load bar (5), a movable return pulley (71) is arranged between two guide rollers (50) and positioned to return a pulling link (7) along said guide plane (P) ,
- The load bar (5) comprising, over at least part of its length, a support surface (54) for the fabric (1) located in the guide plane (P).

Description

Technical field of the invention

The present invention relates to a roll-up fabric protection system.

State of the art

The operating principle of a roll-up fabric protection system, used for example in a pergola or in an awning, is well known in the state of the art.

The canvas is rolled up in a chest, for example fixed to a wall. There are several types of mechanism for unrolling/rolling up the canvas.

A first type of mechanism uses articulated arms.

A second type of mechanism uses two guide bars each carrying a rail, and a load bar intended to slide along the two rails to pull the canvas and unroll it from the box. A system of pull links associated with a motor makes it possible to control the movement of the load bar along the two rails. Each pulling link is wound on a drum operable by the motor and extends inside respectively the first guide bar and the second guide bar. The two pulling links each pass respectively through a first deflection pulley, called fixed, located at the end of the guide bar. The two pulling links then meet inside the load bar, each via a deflection pulley, called mobile, secured to the load bar. A device for tensioning the two links, for example housed in the load bar, the tension of which is adjustable, ensures the junction between the two links and makes it possible to keep the canvas taut during its movement. This mechanism is well described in patent applications FR2692930A1 and FR2546869A1 .

• Au niveau de la cinématique pour que le mouvement de la toile à l'enroulement ou au déroulement se réalise de la manière la plus fluide possible, en réduisant les contraintes mécaniques ;
• Au niveau de l'écoulement de l'eau de pluie, afin d'éviter l'accumulation d'eau sur la toile lorsqu'elle est au moins partiellement déroulée ;

Such operation is currently generalized. However, there are still a few areas for improvement, including:

• At the level of the kinematics so that the movement of the canvas during winding or unwinding is carried out in the most fluid way possible, by reducing the mechanical stresses;
• At the level of the flow of rainwater, in order to avoid the accumulation of water on the canvas when it is at least partially unrolled;

The object of the invention is therefore to propose a protection system using a roll-up fabric whose architecture makes it possible to provide solutions to the two points raised above.

Disclosure of Invention

• Au moins une toile enroulable comprenant un premier bord et un deuxième bord opposé au premier bord,
• Une première barre de guidage et une deuxième barre de guidage, agencées suivant deux directions parallèles longitudinales, et positionnées pour définir un plan de guidage de la toile, dans lequel la toile est amenée à se déplacer lorsqu'elle est déroulée ou enroulée,
• Un tambour d'enroulement agencée transversalement aux deux barres de guidage, pouvant être entraîné en rotation autour de son axe, auquel le premier bord de la toile est fixé,
• Une barre de charge transversale fixée au deuxième bord de la toile pour tirer la toile, ladite barre de charge comprenant à chaque extrémité deux galets de guidage qui coopèrent respectivement avec la première barre de guidage et avec la deuxième barre de guidage, pour guider la toile suivant le plan de guidage,
• Un mécanisme de mise en mouvement de la barre de charge le long des deux barres de guidage, ledit mécanisme comprenant deux liens de tirage s'étendant perpendiculairement au tambour, respectivement de chaque côté de la toile, enroulés en sens inverse de ladite toile sur le tambour, passant chacun respectivement sur une poulie de renvoi dite fixe et par une poulie de renvoi dite mobile portée par la barre de charge à chacune de ses extrémités, les deux liens de tirage étant reliés entre eux à l'intérieur de la barre de charge,
• A chaque extrémité de la barre de charge, suivant le plan de guidage, la poulie de renvoi mobile étant agencée entre les deux galets de guidage et positionnée pour renvoyer le lien de tirage suivant ledit plan de guidage,
• La barre de charge comportant sur au moins une partie de sa longueur, une surface d'appui de la toile située dans le plan de guidage.

This goal is achieved by a protection system comprising:

• At least one roll-up canvas comprising a first edge and a second edge opposite the first edge,
• A first guide bar and a second guide bar, arranged in two parallel longitudinal directions, and positioned to define a canvas guide plane, in which the canvas is made to move when it is unrolled or rolled up,
• A winding drum arranged transversely to the two guide bars, which can be driven in rotation about its axis, to which the first edge of the fabric is fixed,
• A transverse load bar fixed to the second edge of the fabric to pull the fabric, said load bar comprising at each end two guide rollers which cooperate respectively with the first guide bar and with the second guide bar, to guide the fabric according to the guide plan,
• A mechanism for moving the load bar along the two guide bars, said mechanism comprising two pulling links extending perpendicular to the drum, respectively on each side of the fabric, wound in the opposite direction of said fabric on the drum, each passing respectively over a so-called fixed deflection pulley and by a so-called movable deflection pulley carried by the load bar at each of its ends, the two pulling links being interconnected inside the load bar ,
• At each end of the load bar, following the guide plane, the movable return pulley being arranged between the two guide rollers and positioned to return the pulling link along said guide plane,
• The load bar comprising, over at least part of its length, a support surface for the canvas located in the guide plane.

According to one particularity, the movable deflection pulley comprises an axis of rotation located in a plane, called rolling plane, in which each guide roller is caused to roll.

According to another particularity, the load bar comprises a device for holding the fabric, having a support surface arranged in the extension of said support surface and comprising means for fixing the fabric against said support surface for keep it in the guide plane.

According to another feature, the load bar also comprises a zone for attaching the second edge of the canvas, said attachment zone being arranged to receive the second edge of the canvas along an axis present in a plane parallel to the guide plane and lower than said guide plane.

According to another feature, each guide bar is made in the form of a section.

According to another feature, the profile of the guide bar has a cross section provided with a guide path to accommodate the guide rollers of the load bar, forming a guide rail.

According to another feature, the profile of the guide bar has a cross section provided with a housing in which is inserted a profile for guiding the canvas.

According to another feature, the profile of the guide bar has a cross section provided with a housing intended to receive the pull link.

According to another feature, the profile of the guide bar has a cross section provided with a housing for fixing the guide bar to the trunk.

According to another feature, the profile of the guide bar has a cross section provided with a housing in which a light device is inserted.

According to another feature, the profile of the guide bar has a cross section provided with a housing for fixing the guide bar to the post and/or to a reinforcement bar.

According to another feature, the profile of the guide bar has a cross section provided with a housing for draining rainwater.

According to another feature, the load bar comprises, over its entire length, a channel overflowing at each end into the housing for draining rainwater from each guide bar.

According to another particularity, the second edge of the canvas has a hem in which is inserted a bead configured to cooperate with a housing forming said fastening zone of the load bar.

Brief description of figures

• La figure 1 représente en perspective, un système de protection conforme à l'invention ;
• La figure 2 illustre le principe et l'architecture de mise en mouvement de la toile ;
• La figure 3 représente, vu en coupe transversale, le profilé d'une barre de guidage du système avec lequel coopère l'extrémité de la barre de charge ;
• La figure 4 représente l'extrémité de la barre de charge du système de l'invention ;
• La figure 5 illustre l'architecture de la barre de charge du système de l'invention ;
• La figure 6 illustre l'architecture de la barre de charge du système de l'invention et le principe d'accrochage de la toile ;

Other characteristics and advantages will appear in the detailed description which follows, given with regard to the appended drawings listed below:

• The figure 1 shows in perspective, a protection system according to the invention;
• The figure 2 illustrates the principle and the architecture of setting the canvas in motion;
• The picture 3 shows, seen in cross section, the profile of a guide bar of the system with which the end of the load bar cooperates;
• The figure 4 represents the end of the load bar of the system of the invention;
• The figure 5 illustrates the architecture of the load bar of the system of the invention;
• The figure 6 illustrates the architecture of the load bar of the system of the invention and the principle of hanging the canvas;

Detailed description of at least one embodiment

The invention is related to the field of roll-up canvas protection systems against the sun or bad weather, of the pergola or equivalent type.

In the rest of the description, the terms "upper", "lower", "below", "above" are to be considered with reference to the ground, the ground being the lowest part on which the system rests. .

With reference to the figure 1 , this type of system uses a fabric 1 wrapped around a drum 10 operable in rotation around its axis. The actuation can be implemented using an 8 motor.

The fabric 1 is advantageously rectangular in shape and is intended to be unrolled or rolled up on the drum, in a so-called longitudinal direction.

The drum 10 is housed in a box 2 fixed in height, for example to a wall M, parallel to the ground. It is arranged in a direction transverse to the direction of movement of fabric 1.

The fabric 1 has two opposite transverse edges, called first transverse edge and second transverse edge, and two opposite longitudinal edges, called first longitudinal edge and second longitudinal edge.

A canvas guide frame 1 is fixed to said trunk (via the drum). This frame can have a U-shape comprising two guide bars 3a, 3b (reference 3 generally) parallel to each other and possibly a bar or crosspiece, called reinforcement 4 acting as reinforcement between the two guide bars 3a, 3b . Depending on the dimensions of the solar protection system, the reinforcement bar may not be present or the system may have one or more bars of this type, fixed in one or more places between the two guide bars 3.

The first transverse edge of the fabric is fixed to the drum and the second transverse edge of the fabric is fixed to a load bar 5 of the system. The load bar 5 is intended to slide at each end along the two parallel guide bars 3, in the longitudinal direction. The fabric 1 is caused to slide on the guide bars along its two longitudinal edges.

The system also comprises at least two posts 6 for supporting the frame, each of the two posts supporting a guide bar at its end opposite that fixed to the trunk 2. These two posts can be fixed at the end of the guide bar 3 or so offset from the end of the guide bars. These two posts 6 can be height-adjustable to adjust the inclination of the plane formed by the fabric 1, each guide bar 3 being able to be pivotally mounted on its respective post 6 to allow the height adjustment and the inclination of the trunk. A pivoting mechanism can also be provided at the level of the trunk 2 to allow the tilting of the frame.

The two guide bars 3 are identical and extend symmetrically with respect to a vertical plane perpendicular to the ground.

With reference to the picture 2 , the system comprises a mechanism for moving the fabric 1 to roll it up or unroll it. This mechanism comprises two parallel pull links 7, each formed for example of a strap or a cable.

Each pull link 7 is wound on the drum 10 in the opposite direction to the fabric 1 and extends along a separate guide bar 3. Each pulling link 7 passes over a fixed return pulley 70 located at the end of the guide bar 3, to return in the direction of the drum 10. Then the end part of each of these pulling links 7 passes over a return, called mobile return pulley 71, fixed to the load bar 5, so as to be deflected at approximately 90° along the axis of the load bar 5. The two end parts of the pulling links are then connected together on the inside of the load bar. The system may include a tensioning device. This device can comprise for example an adjustable tension spring housed in the load bar 5, ensuring the junction between the two pulling links and/or two springs 72 (as on the figure 2 ) integrated into each pull link 7 and each arranged in a separate guide bar 3.

The tensioning device makes it possible to maintain the fabric 1 in permanent tension, whatever its position along the two guide bars 3a, 3b.

In a non-limiting way, the fabric 1 is for example wound on the drum 10 in the clockwise direction while the draw ties 7 are wound on the drum in the anti-clockwise direction. To unroll the canvas 1, it is therefore necessary to actuate the drum 10 in the anti-clockwise direction. This rotational movement causes a progressive winding of the two pulling links 7. The traction exerted on the pulling links 7 is transmitted by the fixed 70 and mobile 71 return pulleys to the load bar 5, which is thus subjected to a longitudinal force, allowing its translation along the two guide bars 3. During the reverse operation, the drum is rotated in the direction of clockwise. The tensioning device makes it possible to maintain an appropriate tension on each pulling link during this operation.

Each pull link 7 is advantageously formed of a strap. It can also be a cable, rope or equivalent.

• Un logement 30 destiné à recevoir un profilé de guidage de la toile ;
• Un logement 31 destiné à recevoir le lien de tirage ;
• Un logement 32 pour la fixation de la barre de guidage au coffre ;
• Un logement 33 pour y intégrer un dispositif lumineux ;
• Un logement 34 pour la fixation de la barre de guidage au poteau et ou à la barre de renfort 4 ;
• Un logement 35 pour évacuation des eaux de pluie via la rigole 53 (voir ci-après) ;
• Un chemin de guidage pour accueillir les galets de guidage de la barre de charge, formant un rail de guidage 36 ;

With reference to the picture 3 , each guide bar 3 is made in the form of a profile, for example of aluminum. This profile has a cross section allowing it to fulfill different functions, these functions being fulfilled by different housings or parts of the profile of the bar, arranged longitudinally. These different dwellings or parts are as follows:

• A housing 30 intended to receive a fabric guide section;
• A housing 31 intended to receive the pull link;
• A housing 32 for fixing the guide bar to the trunk;
• A housing 33 for integrating a light device;
• A housing 34 for fixing the guide bar to the post and or to the reinforcing bar 4;
• A housing 35 for draining rainwater via the channel 53 (see below);
• A guide path to accommodate the guide rollers of the load bar, forming a guide rail 36;

According to a particular aspect of the invention, the two guide bars 3 are arranged in parallel so as to define between their two rails a guide plane P of the fabric 1, in which the fabric 1 is caused to move when it is unrolled or rolled up.

With reference to the figure 4 , the load bar 5 comprises at each end two guide rollers 50, arranged to cooperate with the guide rail 36 of the guide bar 3. The load bar 5 also comprises at each of its ends the movable return pulley 71 defined above.

According to a particular aspect of the invention, with reference to the picture 3 and at the figure 4 , along the guide plane P, the movable return pulley 71 is positioned between the two guide rollers 50. The two guide rollers 50 are made to roll on the corresponding guide rail 36 of the guide bar 3, following a plane, called rolling plane P2, which is perpendicular to their axis of rotation and which corresponds to the plane in which each roller is brought into contact with the guide rail and to roll on the guide rail 36. This rolling plane P2 is also perpendicular to the guide plane P. The two guide rollers 50 each have an axis of rotation A1, A2 positioned in said guide plane P. In other words, considering the guide plane P, the axis A3 of the mobile deflection pulley 71 (corresponding to its axis of rotation) is located between the axis of rotation A1 of the first guide roller and the axis of rotation A2 of the second guide roller 50. The axis A3 of the deflection pulley mobile 71 is also advantageously included in the pla bearing P2 of the two guide rollers 50.

At each end of the load bar 5, the movable return pulley 71 has an axis perpendicular to the guide plane P to return the pulling link 7, coming from the fixed return pulley 70 located at the end of the guide bar 3 , at an angle of approximately 90°, to direct it along the axis of the load bar 5. guide P. Its axis A3 is thus oriented perpendicular to the guide plane.

As indicated above and with reference to the figure 6 , the fabric 1 is fixed by its second transverse edge to the load bar 5. This second transverse edge may comprise a hem in which is inserted a rod 11, forming a transverse bead. The fixing of the edge is carried out by housing the bead thus formed in a transverse housing 51 advantageously made over the entire length of the load bar 5.

According to a particular aspect of the invention, as shown in the figure 5 , this transverse housing 51 extends along an axis X situated outside the guide plane P of the fabric, more particularly under this guide plane P, so as to shift the attachment point.

According to another particular aspect of the invention, in order to place the canvas 1 in the guide plane P, the load bar 5 carries at each end a holding device arranged upstream with respect to its attachment point and in a plane higher than that including the attachment point. This holding device may comprise a flange 52 defining a plane against which the fabric bears, this plane being located in said guide plane. Over all or part of its length, the load bar 5 also comprises an advantageously flat bearing surface 54, extending between the two flanges, and forming a bearing plane for the fabric 1, this bearing surface being located in the extension of the guide plane P. The maintenance of the canvas 1 on the flange 52 can be achieved by using screws.

Thus, upstream of its attachment point, the fabric 1 is clamped on the load bar 5 along a plane aligned with the guide plane P, it comes to rest on the bearing surface 54 and it is attached to the load bar 5 by its second transverse edge, at a point of attachment located under the guide plane P. In this way, the fabric 1 has an inclined termination, allowing it to avoid the formation of an obstacle to the water flow to a channel 53 arranged over the entire length of the load bar. This channel 53 is intended to open at each end of the load bar 5 into the housing 35 dedicated to the flow of water made in each guide bar 3. At each end the channel 53 projects outwards to overflow sufficiently inside the housing 35 for draining the water from the corresponding guide bar 3.

As indicated above, each guide bar 3 also comprises a longitudinal housing 30 in which is inserted a fabric guide profile 1. This housing 30 is juxtaposed to the guide rail 36. This fabric guide profile 1 can have a cross section comprising a guide clamp cooperating with the corresponding longitudinal edge of the fabric 1 so that the latter slides along the guide bar 3. The clamp is positioned to guide the fabric 1 along said plane of guide P. This guide clamp is surmounted by two antennae acting as a spring to allow permanent adjustment of the tension of the fabric.

Each guide bar 3 comprises a longitudinal housing 31 in which is stretched the pulling link 7, for example formed of a strap. This housing 31 can be juxtaposed with the housing 30 dedicated to receiving the fabric guide section.

The housing 35 for draining water can be located under the guide rail 36. As indicated above, it has an opening along its entire length allowing the channel 56 of the load bar to communicate with this housing 35 to pour the collected rainwater onto the canvas, regardless of the position of the load bar/canvas couple along the guide bars 3.

In its lower part, the guide bar 3 has a dedicated housing 34 to be fixed to the post 6 and/or to the reinforcement bar 4 (if present). Juxtaposed to this housing 34, the guide bar 3 advantageously includes a housing 33 to accommodate a light device. This luminous device may comprise a strip of light-emitting diodes. Above this housing, the guide bar 3 may include a housing 32 for fixing the guide bar to the trunk.

• Une cinématique efficace permettant d'obtenir un mouvement fluide de la toile, en évitant la création de moments mécaniques parasites ;
• Une structure robuste incluant l'ensemble des fonctionnalités nécessaires au fonctionnement ;

The solution of the invention has many advantages, including:

• An effective kinematics allowing to obtain a fluid movement of the canvas, avoiding the creation of parasitic mechanical moments;
• A robust structure including all the functionalities necessary for operation;

Claims (14)

Protection system comprising: - At least one rollable canvas (1) comprising a first edge and a second edge opposite the first edge, - A first guide bar (3a) and a second guide bar (3b), arranged in two longitudinal parallel directions, and positioned to define a guide plane (P) of the fabric, in which the fabric (1) is brought to move when unrolled or rolled up, - A winding drum (10) arranged transversely to the two guide bars (3), which can be driven in rotation around its axis, to which the first edge of the fabric (1) is fixed, - A transverse load bar (5) fixed to the second edge of the fabric (1) to pull the fabric (1), said load bar (5) comprising at each end two guide rollers (50) which cooperate respectively with the first guide bar (3a) and with the second guide bar (3b), to guide the canvas along the guide plane (P), - A mechanism for moving the load bar (5) along the two guide bars (3), said mechanism comprising two pulling links (7) extending perpendicular to the drum (10), respectively on each side of the canvas (1), wound in the opposite direction to said canvas (1) on the drum, each passing respectively over a so-called fixed deflection pulley (70) and by a so-called mobile deflection pulley (71) carried by the load (5) at each of its ends, the two pulling links (7) being interconnected inside the load bar (5), - Characterized in that : - At each end of the load bar (5), following the guide plane (P), the movable return pulley (71) is arranged between the two guide rollers (50) and positioned to return the pulling link ( 7) following said guide plane (P), - The load bar (5) comprises, over at least part of its length, a support surface (54) for the fabric (1) located in the guide plane (P). System according to Claim 1, characterized in that the movable return pulley (71) comprises an axis of rotation (A3) located in a plane, called the rolling plane (P2) in which each guide roller (50) is brought to to roll. System according to Claim 1 or 2, characterized in that the load bar (5) comprises a device for holding the fabric, having a support surface arranged in the extension of the said support surface (54) and comprising means for fixing the fabric (1) against said support plane to keep it in the guide plane (P). System according to one of Claims 1 to 3, characterized in that the load bar (5) also includes a zone for gripping the second edge of the canvas (1), the said gripping zone being arranged to receive the second edge of the fabric (1) along an axis (X) present in a plane parallel to the guide plane (P) and lower than said guide plane (P). System according to one of Claims 1 to 4, characterized in that each guide bar (3) is designed as a profile. System according to Claim 5, characterized in that the profile of the guide bar (3) has a cross section provided with a guide path to accommodate the guide rollers (50) of the load bar (5), forming a guide rail (36). System according to one of Claims 5 or 6, characterized in that the profile of the guide bar (3) has a cross section provided with a housing (30) in which is inserted a profile for guiding the fabric (1 ). System according to one of Claims 5 to 7, characterized in that the profile of the guide bar (3) has a cross section provided with a housing (31) intended to receive the pull link. System according to one of Claims 5 to 8, characterized in that the profile of the guide bar (3) has a cross section provided with a housing (32) for fixing the guide bar to the boot. System according to one of Claims 5 to 9, characterized in that the profile of the guide bar (3) has a cross section provided with a housing (33) in which a lighting device is inserted. System according to one of Claims 5 to 10, characterized in that the profile of the guide bar (3) has a cross section provided with a recess (34) for fixing the guide bar to the post and/or to a reinforcing bar (4). System according to one of Claims 5 to 11, characterized in that the profile of the guide bar (3) has a cross section provided with a housing (35) for draining rainwater. System according to Claim 12, characterized in that the load bar (5) comprises, over its entire length, a channel (53) projecting at each end into the housing (35) for the evacuation of rainwater from each guide bar (3). System according to one of Claims 1 to 13, characterized in that the second edge of the fabric (1) comprises a hem in which is inserted a bead configured to cooperate with a housing (51) forming the said fastening zone of the load bar (5).

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