FR2782103A1 - Flexible membrane shade for covering glassed surface, has membrane wound and unwound on shaft which is in turn mounted on slidable bearings - Google Patents

Abstract

The shade comprises a flexible membrane (2) which has one end (3) integral with a fixed section (4) mounted on a wall (5). The membrane is wound and unwound on a winding shaft (7). The shaft is held at is ends (8,9) in bearings which slide in a direction perpendicular to the shaft. The bearing supports receive at their ends (12,13) a reinforcing section (14) which ensures permanent application of the shaft against the reinforcing section under the traction exerted by the membrane.

Description

The invention relates to a shading and / or blackout device

  flexible membrane intended to cover a surface in particular glazed, such as a veranda, a window or the like, said flexible membrane, on the one hand, having one end made integral with a fixed profile mounted on a support, such as a wall , and, on the other hand, wrapping around and unwinding from a

movable winding shaft.

  The invention relates, as is apparent from the description

  above, shading and / or blackout devices with flexible membranes, knowing that it can also find an application in the field of membrane screen devices

  flexible, such as cinema screens or the like.

  In fact, there is already known a shading device

  and / or concealment corresponding to the above description, this at

through document EP-A-0.676.514.

  More particularly, such a shading and / or blackout device is defined, essentially, by a flexible membrane, one end of which is made integral with a support profile which has just been fixed, for example against a wall, while the other end of this flexible membrane is made integral with a tree

  winding around which it is able to wind.

  In particular, this winding shaft, which can receive an internal drive motor, is mobile and comes to move above or in front of the glass surface

  corresponding, for example, to a veranda.

  For this purpose, this winding shaft is mounted, in rotation, at its ends, by bearings associated with bearing supports which receives, at its ends, a profile extending, in parallel, along this shaft. winding. Such a profile also receives consoles equipped with rolling means in the form of rollers or rollers coming to rest on the glass surface to be covered. On this profile is also fixed one end of at least two articulated arms with elastic return in the deployed position, the other end of which is articulated on a fixed base located,

  substantially at the height of the support profile fixed against the wall.

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  In fact, this type of known shading and / or blackout device has some drawbacks which limit its application.

  to surfaces to be covered that do not exceed certain dimensions.

  Thus, it will be observed, first of all, that although it is specified, in this prior document, that the brackets, made integral with the profile extending parallel to the winding shaft and receiving the rolling means , are in the form of a cradle to allow, supposedly, to rest the winding shaft there, it cannot, in fact, take support inside these cradles, unless it is under the 'influence of a deflection, that once the flexible membrane fully rolled up. Also, when the device is fully or partially deployed, this winding shaft is maintained over its length, except at its ends, by the flexible membrane maintained under tension by the articulated arms with elastic return in the deployed position. It is obvious, under these conditions, that this winding shaft is caused to bend along its length under the influence of this irregular tension which said flexible membrane naturally imparts to it. However, precisely, due to such a deformation of the winding shaft, there follows an irregular winding around the flexible membrane which comes to define, when it is completely folded, a roll of significant section. This is the first reason why such a known shading and / or blackout device finds its application only

  to cover areas of limited advance.

  The second reason is related to the overall size, once the articulated arms with elastic return in the deployed position. In particular, the two sections of sections which define an articulated arm each have a length corresponding, substantially, to half the maximum possible advance of the device. This is necessarily equipped with two articulated arms, its width must be at least equal to its projection to allow the folding of these articulated arms during winding

of the flexible membrane.

  The present invention is therefore intended to respond to the above problems. In fact, the present invention corresponds, in a way, to a solution to the drawbacks of the

  current system which limits its uses.

  To this end, the invention relates to a shading and / or blackout device with a flexible membrane and intended to cover a surface, in particular glazed, such as a veranda, a window or the like, said flexible membrane, with a part, having one end made integral with a fixed profile mounted on a support, such as a wall, and, on the other hand, winding around and unwinding from a movable winding shaft, characterized in that this movable winding shaft is kept in rotation at its ends in bearings mounted to slide in a direction perpendicular to the axis of the winding shaft at the level of bearing supports which a profile receives at its ends reinforcement to ensure the maintenance of the wall allowing, under the influence of the traction exerted by the flexible membrane, this

  winding shaft against said reinforcing profile.

  In addition, if at least two articulated arms with elastic return in the deployed position are mounted articulated, on the one hand, at one of their ends at the level of said reinforcing profile and, on the other hand, at their rear end at the level with a base located substantially at the height of the support profile, each of these articulated arms can be defined, in fact, by at least two elementary articulated arms exerting their action in tandem taking into account that the front and rear portions of these articulated arms mounted in tandem are connected together like a pantograph in

  view of a synchronous action of these two elementary arms.

  In the end, it will be observed that by being systematically capable of being kept applied against a reinforcing profile which, for its part, can be defined with great inertia, the winding shaft cannot bend in the direction of deployment and winding of the flexible membrane. This comes, therefore, to wind more evenly on this tree

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  winding to define, once wound up, a drum

smaller section.

  Furthermore, by splitting the articulated arms, the problem of the size of the latter is solved, once the shading and / or concealment device is folded. However, to avoid, during deployment for example, that one of the elementary arms composing an articulated arm does not come to deploy independently of the other elementary arm, which would consist in subjecting the flexible membrane to a tension corresponding to the only force recall of only one of these elementary arms, these are associated in tandem in the manner of a pantograph. This causes them to deploy simultaneously and to exert together their restoring force on the flexible membrane. The latter being better stretched, it cannot have any pocket or other deformation liable to hinder

  its winding on the winding shaft.

  Ultimately, the present invention has been able to demonstrate that by managing the quality of the winding of the membrane as well as possible, it is possible to significantly increase the possibilities of such a shading device and / or concealment. It should be noted, particularly in this regard, that having substantially limited the amount of flexion of the winding shaft, such a shading and / or concealment device is able to extend so more important and without support, beyond one or both

  lateral sides of the glass surface initially to be covered.

  Other objects and advantages of the present invention

  will appear during the description which follows relating to

  to an embodiment which is given only by way of example

indicative and not limiting.

  Understanding this description will be facilitated by

  Referring to the appended drawings in which: - Figure 1 is a schematic plan view of a shading and / or concealment device according to the invention; - Figure 2 is a partial schematic exploded and perspective view of the bearing support receiving, in a sliding manner, the bearing at which the winding shaft is kept in rotation; - Figure 3 is a schematic view in elevation (side view) of the shading device and / or concealment according to the invention. As visible in the figures of the attached drawings, the present invention relates to a shading and / or blackout device 1 with flexible membrane 2 intended to cover a surface, in particular glazed, such as a veranda, a window or the like, said flexible membrane 2 comprises, in this case, one end 3 made integral with a fixed section 4 which has just been brought to the level of a support 5, for example a wall. At its opposite end 6, this flexible membrane 2 is made integral with a movable winding shaft 7 around which it is, therefore, caused to wind when this device is folded up.

shading and / or blackout 1.

  In this regard, it should be noted that the winding shaft 7 is qualified as mobile insofar as, during the deployment and folding phase of the flexible membrane 2, it is caused to move above the surface. to cover, for example above

  from the roof of a veranda or in front of a window.

  In particular, this winding shaft 7 is kept in rotation, at its ends 8, 9, by bearings 10, more particularly visible in FIG. 2 associated with bearing supports 11 which receives, at its ends 12, 13, a profile 14 extending parallel, preferably at the rear, of

the winding shaft 7.

  In fact, the bearings 10 have the particularity of being slidably mounted in a direction 15 perpendicular to the axis of the winding shaft 7 at the level of the bearing supports 11, this in order to ensure the maintenance of the surface of this winding shaft 7, under the influence of the traction exerted by the

  flexible membrane 2, in permanent contact with said profile 14.

  This constitutes, in fact, a reinforcing profile having,

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  preferably, a high inertia to bending at least in one

  plane parallel to the deployment of the flexible membrane 2.

  Thus, by being systematically kept applied against this reinforcing profile 14 the winding shaft 7 is kept almost rectilinear whether it is in the deployment phase, once unfolded or during the winding of the flexible membrane 2. This leads , specifically, to a regular winding of the latter. Also, through such a regular winding, the maximum advance of the shading and / or occultation device 1 may be greater for a determined section 16 of the drum defined by this flexible membrane 2 once wound around 1 ' tree

winding 7.

  As visible in FIG. 1, the reinforcing profile 14 is in the form of a tubular profile which, on its side 17 facing the winding shaft 7, is configured in the form of a gutter 18 whose radius of curvature is adjusted to said section 16. As for the bearing supports 11, they are, as visible in FIG. 2, in the form of angled brackets 19 including one wing 20, oriented parallel to the winding shaft 7, is provided capable of being fixed on the reinforcing profile 14. In fact, this wing 20 may have a section adjusted to the internal section 21 of the tubular shape of the reinforcing profile 14 to be

  introduced at the ends 12, 13 of the latter.

  This console 19 further comprises a wing extending in a plane perpendicular to the axis of the winding shaft 7 and in which is formed a cutout 22 receiving, in the manner of a

drawer, sliding bearing 10.

  It should be noted that, once the assembly has been carried out, said cutout 22 is closed by means of a stopper 23 attached to the edge.

  free 24 at the level of which the cutout 22 is precisely arranged.

  As shown in Figure 3, the reinforcing profile 14 can receive, in its lower part 25, rolling means 26, such as rollers, rollers or the like. In fact, so as to be able to easily position these rolling means 26 along the reinforcing profile 14, the latter has, at this lower part 25, a "T" groove 27 for receiving, in a sliding manner, in order to adjust their positioning of yokes 28 corresponding to said rolling means 26. If such a shading and / or concealment device is able to unfold freely under the weight of the winding shaft 7 and that of the flexible membrane 2 when it is located in an almost vertical plane, or with a steep slope, in the event of a slight inclination or in a horizontal situation, this deployment is ensured by at least two articulated arms with elastic return in position deployed 29, 30 including one end 31, defined as being the rear end, and articulated mounting on a fixed base 32 located in the near immediate vicinity of the fixed section 4 attached to the support 5 and whose opposite end 33, defined as the front end, is made integral, again using

  articulation means 34, of the reinforcing profile 14.

  In order to facilitate the positioning of these articulation means 34 along the reinforcing profile 14, the latter is configured at its side 35, opposite the winding shaft 7, just as in its lower part 25 , in the form of a T-shaped groove 36 for sliding reception and for positioning the yokes 37 corresponding to these means

articulation 34 of arms 29, 30.

  In the end, in the same way, at their rear end 31, these arms 29, 30 can be mounted, in an articulated manner, using yokes 38 whose positioning is adjustable along the fixed section 4 on which they are reported slidingly. Thus, this fixed section 4 may, here again, have a "T" groove 39 at the level of which the said sections are mounted.

  yokes 38 using suitable fixings 40.

  In view of the above description, we understand that this

  fixed section 4 substantially defines the fixed bases 32 receiving, in an articulated manner, the rear end 31 of the arms 29, 30. Ultimately, according to another feature of the present invention, such an arm 29, 30 is defined by at least two elementary arms, respectively, 29A, 29B, 30A, 30B acting in tandem, taking into account that the front and rear portions 41, 42, 43, 44 of these elementary arms 29A, 29B; 30A, 30B are interconnected in the manner of a pantograph using tension balancing bars 45, 46, 47, 48. For this purpose, these are, on the one hand, interconnected by means of articulations and, on the other hand, pivotally mounted,

  respectively, on these portions 41, 42, 43 and 44.

  In fact, through these tension balancing bars 45, 46, 47, 48 it is ensured that the elementary arms 29A, 29B; 30A, 30B act, really in tandem, in the sense that they come to deploy synchronously, by ensuring that the tension exerted on the flexible membrane 2 is the result of the elastic return means corresponding to each of these arms

elementary 29A, 29B; 30A, 30B.

  It should be observed that the articulated connection 49 of the intermediate balancing arms 46, 47 also mounted articulated, respectively, on the front portion 42 of the elementary arm 29A; A and on the rear portion of the elementary arm 29B, 30B is slidably mounted, in particular by means of a slider 50, on an intermediate guide profile 51 extending parallel to the winding shaft 7 and at the level of which also takes place

  the junction 52 of the two elementary arms 29A, 29B; 30A, 30B.

  In practice, such an intermediate guide section 51 extends, like the fixed section 4 or the reinforcing section 14, over the entire width 53 of the shading and / or concealment device 1. Consequently at the level of this intermediate guide section 51, the junctions 52 of the elementary arms 29A, 29B are effected; A, 30B corresponding to each of the articulated arms 29, 30 of which is

  equipped with this shading and / or shading device 1.

  Note, again, that to ensure deployment of the flexible membrane 2 in a direction strictly perpendicular to the support 5, these articulated arms 29, 30 and the various elements which

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  the components are mounted symmetrically with respect to the longitudinal median plane 54 of this shading device and / or

blackout 1.

  To return to the intermediate guide profile 51, this

  ci can be defined, as visible in Figure 3, in the form of a grooved profile 55, 56 for sliding reception, for positioning, hinge means 57, 58 ensuring the joining of the portions 42, 43 elementary arms 29A,

  29B; 30A, 30B at the height of this intermediate guide section 51.

  In addition, if the latter can serve as an intermediate support for the flexible membrane 2, it can also be equipped just like the

  reinforcing profile 14, of rolling means 59.

  Finally, to ensure the protection of such a shading and / or concealment device 1, in the folded position, the fixed section 4 at the height of the support 5, can be configured for the reception, by simple interlocking, of a protective cover 60. Likewise, a protective casing 61 can envelop the winding shaft 7, this protective casing 61 being fixed, at the level of its ends, either at the level of the bearing supports 11, or,

  directly on the ends 12, 13 of the reinforcing profile 14.

  In particular, such a connection can be ensured by means of protective covers of appropriate shapes, attached to the level.

  of the ends of this winding shaft 7.

  It should be observed that the shading and / or occultation device 1, as described above, if it is of particular interest for covering surfaces in order to protect them, for example, against solar radiation, it can also be used, in a vertical arrangement, as a screen, either for separation between two parts of the building, or for

  cinematographic projection for example.

  Indeed, the present invention makes it possible to manage, cleverly, the winding of a flexible membrane, whatever its usefulness, this by effectively controlling the

  deformation of a mobile type winding shaft.

  Although the invention has been described with reference to a particular embodiment, it is understood that it is in no way limited thereto and that it is possible to make various modifications to the forms, materials and combinations of these. various elements,

  without departing from the scope and spirit of the invention.

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Claims (15)

Claims   1. Shading and / or blackout device with flexible membrane (2) intended to cover a surface, in particular glazed, such as a veranda, a window or the like, said flexible membrane (2), on the one hand, having one end (3) made integral with a fixed profile (4) mounted on a support (5), such as a wall, and, on the other hand, winding around and unwinding from a winding shaft (7) mobile, characterized in that this mobile winding shaft (7) is kept in rotation, at its ends (8, 9), in bearings (10) mounted to slide in a direction (15) perpendicular to the 'axis of the winding shaft (7) at the level of bearing supports (11) which is revised, at its ends (12, 13), a reinforcing profile (14), to ensure the maintenance of permanent surface, under the influence of the traction exerted by the flexible membrane (2), of this winding shaft (7) against said profile reinforcement (14).   2. Shading and / or blackout device according to claim 1, characterized in that the reinforcing profile (14) is in the form of a tubular profile which, on its side (17) facing the winding shaft (7) is configured in the form of a gutter (18) whose radius of curvature is adjusted to the section (16) defined by the flexible membrane (2) once wound   around this winding shaft (7).   3. Shading and / or blackout device according to one   any one of claims 1 and 2, characterized in that   the bearing supports (11) are in the form of angle brackets (19) comprising, on the one hand, a wing (20) oriented parallel to the winding shaft (7) and provided capable of being fixed on the reinforcing profile (14) and, on the other hand, a wing (21) extending in a plane perpendicular to the axis of the winding shaft (7) and in which a cutout (22) is formed   receiving, like a drawer, the sliding bearing (10).   4. Shading and / or blackout device according to claim 3, characterized in that the wing (20) of the bracket bracket (19) defining an apron support (11) has a section adjusted to the internal section (21) of the reinforcing profile (14) defined in tubular shape for insertion   at the ends (12, 13) of the latter.   5. Shading and / or blackout device according to one   any one of the preceding claims, characterized in that   that the reinforcing profile (14) has, in its lower part (25), a "T" groove (27) for receiving, in a sliding manner in order to adjust their positioning, means of bearing (26).   6. Shading and / or blackout device according to one   any of the preceding claims, the deployment of which is   provided by at least two articulated arms with elastic return in the deployed position (29, 30), one end (31) of which is articulated on a fixed base (32) located in near immediate proximity to the fixed profile (4) and the opposite end (33) is made integral, by means of articulation means (34), with the reinforcing profile (14), characterized in that an articulated arm with elastic return in the deployed position (29, 30) is defined by at least two elementary arms, respectively (29A, 29B; 30A, 30B) acting in tandem, taking into account that the front and rear portions (41, 42, 43, 44) of these elementary arms (29A, 29B; 30A , 30B) are interconnected like a pantograph. 7. Shading and / or blackout device according to claim 6, characterized in that the front and rear portions (41, 42, 43, 44) of the elementary arms (29A, 29B; 30A, B) are connected between them in the manner of a pantograph using tension balancing bars (45, 46, 47, 48), on the one hand connected to each other by means of joints and, on the other hand , pivotally mounted, respectively, on these portions (41, 42, 43, 44).   8. Shading and / or blackout device according to claim 7, characterized in that the articulated connection (49) of the intermediate balancing arms (46, 47), also mounted articulated, respectively, on the portion front (42) of the elementary arm (29A, 30A) and on the rear portion (43) of the elementary arm (29B; 30B), is slidably mounted, in particular by means of a slider (50), on a profile of intermediate guide (51) extending parallel to the winding shaft (7) and at the level of which the junction (52) of said elementary arms (29A, 29B; 30A, 30B).   9. Shading and / or blackout device according to claim 8, characterized in that the intermediate guide profile (51) extends over the entire width (53) of said shading device and / or occultation (1), at this intermediate guide profile (51) taking place the junctions (52) of the elementary arms (29A, 29B; 30A, 30B) corresponding to each of the articulated arms (29, 30) with which it is equipped these measures blackout and / or shading (1).   10. Shading and / or blackout device according to claim 9, characterized in that the intermediate guide profile (51) constitutes an intermediate support for the membrane.   flexible (2) and is fitted with rolling means (59).   11. Shading and / or blackout device according to one   any one of claims 6 to 10, characterized in that   the reinforcing profile (14) just like the fixed profile (4) is provided with a "T" groove (36), respectively (39), for the reception in a sliding manner for their positioning of yokes (37) , respectively (38), ensuring the articulated connection of the arms (29, 30) at the level of their ends, respectively (33, 31), at the level of this reinforcement profile (14) and of said fixed profile (4). 12. Shading and / or blackout device according to claim 10, characterized in that the intermediate guide profile (51) is defined in the form of a grooved profile (55, 56) for sliding reception, in view of their positioning, articulation means (57, 58) ensuring the junction (52) of the portions (42, 43) of the elementary arms (29A, 29B; 30A, 30B) at the height of this intermediate guide profile ( 51). 13. Shading and / or blackout device according to one   any one of the preceding claims, characterized in that   that the fixed profile (4) at the height of the support (5), is configured   for receiving, by interlocking, a protective cover (60).   14. Shading and / or blackout device according to one   any one of the preceding claims, characterized in that   that it comprises a protective casing (61) enveloping the winding shaft (7) and fixed, at the level of its ends, either at the level of the bearing supports (11), or directly on   the ends (12, 13) of the reinforcing profile (14).   15. Application of the shading and / or blackout device (1)   according to any one of claims 1 to 4 as a screen vertical.