ES2339886T3 - DEVICE LIMITING THE OPENING OF A SCREEN AND INSTALLATION OF CLOSURE OR SOLAR PROTECTION THAT INCLUDES SUCH DEVICE. - Google Patents

Abstract

The device has a fixed stop (41) arranged near a top end of a wall (31) of a lateral guiding slide (3b). A mobile stop (51) projects with respect to an end fitting (5) of a bar (2) of a roller shutter apron (1). A monoblock elastic tab (55) allows positioning of the mobile stop such that the stops co-operate with each other for blocking opening of the apron when the mobile stop reaches the fixed stop. The tab is arranged near another wall (32) of the slide opposed to the former wall in end of ascending course of the bar. An independent claim is also included for a solar protection or closure installation comprising an opening limiting device.

Description

Device that limits the opening of a screen and installation of closure or sun protection comprising said device.

The present invention relates to a device that limits the opening of a closing screen or sunscreen equipped with a bar that moves between two lateral sliding guides. That bar is usually fixed on the low end of the screen. The screen can be a roller shutter board, a cloth, a garage door, a movie screen or any other item that presents a analog configuration. The invention also relates to a closure or sun protection system equipped with said opening limitation device.

When normal use of a closure or protection screen, it is preferable that the ends of the bar remain in a guide slide or, failing that, can be easily attached to them, so that the screen always be guided as a result of your maneuvers successive

To do this, the bar can be stopped before or at the time of reaching the upper ends of the slides,  that is, before it is disengaged from the slides. To limit the career of this bar, a solution is to use a electric actuator provided with counting means of the number of laps or a timing. Thus, when the engine is regulated, the bar stops at the desired position before leaving the Sliding However, this solution presents a risk in the case. in which previously registered positions are mismatched. The bar can thus leave the slides and can no longer be introduced again in them.

According to another approach, stops are fixed on the bar. These stops find a fixed part, directly attached to the slides. In the case of rolling shutters, This fixed part is often the underside of the box. This face Bottom is usually plastic and deforms under the action of the stops that, at the end of each opening race, come to bump with the same. The board and the box can thus be damaged. By On the other hand, said configuration is not practical for an operation of maintenance of the blind as the complete disassembly of the board since it is necessary to disassemble the stops to remove the bar and / or the slide board.

To avoid these inconveniences, you can position the stops at the level of the slides. So, the document FR-A-2 520 430 describes a stop device for a roller shutter board in the that a first fixed stop, located inside the box just above the slide, cooperates with a second stop immobilized on the lateral end of the final plank of the board, at the level of the front face of the final plank, that is to say from the side opposite to the board winding. When the final lama leaves the sliding, the board winding tends to apply the slat final on the internal faces of the box. So, the second stop cooperate naturally with the first stop. When the blind is in the high stop, the transverse movement of the final slat is limited by a removable guide, thus preventing the Second stop is retracted relative to the first stop. To liberate the sliding board, the removable guide must be removed or displaced This guide is not always accessible, particularly in structures called "tunnel" in which the trapdoor Access is not large. In the case where disassembly is recommended of the guide, some tools are necessary. In addition, the guide can be lost

In the document FR-A-2 883 027, a locking slat mobile is fixed on the front face of the side end of the final slat of a roller shutter board, on the opposite side to the winding. The blocking lama, housed at the level of the sliding, comes into contact with a stop located inside the box, just above the slide. When one takes place After-sales intervention, to release the board, press on the locking blade with a screwdriver, slid inside of the slides. The blocking blade thus deformed or displaced is sneak off the first stop. The board can then be completely disassembled. In the case where the board comprises a locking blade at each end of the final blade, it is necessary act simultaneously on the blocking slats, what you need The use of two tools. This operation is not always It is easy, particularly if the board is wide.

The document FR-A-2 804 466 describes a stroke limitation device in which a first stop mounted on the side end of the final slat of a board roller shutter cooperates with a second stop fixed on the inside of a lateral guide slide. The first stop can be retractable and be positioned on the final slat with the help of a spring or the like, so that it can slip away in the inside of the final plank when the first descent takes place of the board. For the disassembly of the board, the second stop must sneak out while being maneuvered by the user while it is not necessarily accessible, which may require the use of A specific tool In the case of a wide board, this Operation is delicate.

The invention proposes a device that limits the opening of a screen by means of two stops and that allows easily slap one stop with respect to the other, if you need to Use tools and need few pieces.

To this end, the invention relates to a device that limits the opening of a closing screen or sun protection, this screen comprising a bar that moves between two lateral guide slides, comprising this device a first fixed stop, arranged in the vicinity of the high end of a first wall of a slide, a second stop, which forms protruding from a front or side of a side end of the bar, and a positioning means that allows to position the second stop so that the two stops cooperate to block the screen opening when the second stop reaches the first stop, this positioning means being at end of upward stroke of the bar, arranged in proximity of a second wall of the slide opposite the first wall. This device is characterized in that the positioning means it is elastic and appropriate to exercise, on a part that supports the second stop, an effort directed towards the first wall.

The first fixed stop is arranged in the proximity of the high end of the slide, that is to say found either in the slide, or just above the end through which the screen is entered. The second cap is mobile and is arranged on the front or side of a side end of the bar. This second stop is retractable in the sense that, displacing it transversely with respect to its larger dimension, can be misaligned with respect to the first stop. To decouple the sliding screen, it is enough then press on the final bar or slat before the end of race, that is before the two stops cooperate with a view to Lock the screen opening. Through this action, the medium elastic is stretched and the second stop is no longer in the position of Cooperate with the first stop. This operation is simple and limits the risks of hooking the user's fingers or a tool You run the risk of deteriorating the product. A person can intervene alone and without a specific tool, even on a relatively wide screen.

Advantageously, the effort exerted by the positioning means on the part that supports the second stop is such that the first and second stops are substantially aligned vertically, this effort can be overcome by an effort directed towards the second wall, such that the second stop It slips away from the first stop.

According to another aspect, the first and second stops they are substantially vertically aligned as an effort, exerted in the direction of the second wall against the effort exerted by the elastic means, it is not enough to retrace the second stop with respect to the first stop.

Preferably, the second stop is fixed on the bar, so that no movement is possible relative between these two pieces. In this way, the device is more resistant and allows a longer product life, with the possibility of not deteriorating the product when the pair exercised on the bumpers is important and of being less sensitive to wear and fatigue of materials.

The first stop is advantageously arranged in the inside of the slides. In this way, the bar cannot in No case out of your guidance. The screen can therefore deploy easily, without watering a poorly guided.

The second stop and the elastic means can be arranged on both sides of the screen. This allows to have the certainty that the second stop is well positioned with respect to at the first stop in order for the stop to be effective. So highly preferred, the elastic medium and the second stop are aligned horizontally.

Positioning the elastic medium on the bar, the previous advantage is found again, namely the safety of a good position of the second stop at the end of the race. In this variant, the elastic medium and the second stop can be easily aligned.

The elastic medium and the second stop can belong to a single terminal that is fixed on the end side of the bar. This tends to simplify the system and facilitate the assembly of these two means on the bar.

In order to ensure the screen stop and avoid any involuntary tampering manipulation of the second stop, interlocking means may be placed to prevent the second butt from being retracted with respect to the First once these stops are in contact. These means of interlocking are preferably active only at the end of upward stroke of the bar. This lock can be automatic or performed by the action of a person. With such means, the stop device is much less sensitive to wear than butt pieces that would otherwise tend to cause retracted from the second stop.

The second stop may be arranged, with with respect to the screen, on the side of the winding axis of the screen. This configuration facilitates the retracking operation of this stop since the screen winding is placed usually on the habitat side. The user who wishes to disassemble the board can then hand push the bar from the inside the housing to release it from the fixed stops, which, In most cases, it is easier and more ergonomic than the inverse

In order to simplify the system and to facilitate the installation of the device, the first stop belongs advantageously to an element provided with guiding means of the bar and / or other elements attached to the screen towards the sliding, such as the slats of a blind Rollable

In a closing or protection installation solar according to the invention, at least one device such as the one described above to block the screen opening However, it is preferable to use two of said devices, namely one device per slide. This way, the stop is balanced, which is favorable for the product life, for aesthetics and precision of the stop. This point is all the more important the wider it is the screen.

       \ newpage
    

The invention will become more clearly from manifest from reading the following description given only by way of example and referring to the plans Attachments, in which:

- Figure 1 is a representation of a roller shutter equipped with a device according to the invention;

- Figure 2 is a perspective view partial of some constituent elements of a device according to a first embodiment of the invention;

- Figure 3 is a vertical section according to the line III-III of figure 1, at the end of the board rise, this board being represented by a stroke of axis, with the exception of its final slat;

- Figure 4 is an enlarged view of the detail IV of figure 3;

- Figure 5 is a partial section analogous to Figure 3, when the stops are inhibited;

- Figures 6 to 8 are sections of partial principles, corresponding to figure 3, for others devices according to the invention.

The invention is applicable to different types of screens provided with a bar that moves between two lateral guide slides. The illustration described below corresponds to a type of screen, namely rolling shutters. This example is obviously not limiting, and the invention can be adapted to other types of
screens

In figure 1, a blind board Rollable 1 is installed between two side slides 3a and 3b. On the lower end of the board 1 a bar 2 is fixed, commonly referred to as "final slat". When the screen is a fabric or a Venetian blind, this bar is generally designated as loading bar or ballast. The installation comprises a stopper element 4 arranged in the vicinity of the high end of the  slide 3b, that is the end of this slide by which it is introduced the board when assembly takes place. This item of stop 4 is fixed on the slide 3b being partially entered therein in the direction of the arrow F_ {1} in the Figure 2. The stopper element 4 defines a first stopper 41.

According to an optional aspect, the stop element 4 serves to guide the passage of the slats of board 1. In this case, It is usually called "tulipa" and comprises a convergent input 4a.

The stopper element 4 can also be provided in the form of a separate piece, fixed in the box  not represented by the installation, placing this part once installed the roller shutter, in the extension of the sliding 3b.

The first stop 41 can therefore be placed, or either in the slide 3b, or out of it but in its extension.

A terminal 5 is mounted on the strip 2 being coupled, by two legs 5a and 5b and in the direction of the arrow  F_ {2} in Figure 2, inside two channels longitudinal 2a and 2b formed by plank 2. They can be provided other ways of fixing terminal 5 on plank 2. How to can be seen in figures 3 to 5, terminal 5 defines a stop 51 appropriate to lean against the top 41 at the end of the race, when the board is raised between the slides 3a and 3b.

The cooperation of stops 41 and 51 allows block the opening of screen 1, ie the rise of the plank 2 above the slide 3b.

The terminal 5 also comprises a tongue elastic 55 monobloc with the rest of terminal 5. When the terminal is in position on the slide 3b as shown in figures 3 and 4, the tongue 55 is applied against a wall side 32 of the slide. F_ {3} the effort of tab 55 against wall 32. F_ {4} has been scored the reaction force of the wall 32 on the tongue 55. The effort F_ {4} is transmitted by tongue 55 to blade 2 in form of an elastic effort that tends to push the main part of terminal 5, which supports stop 51, and plank 2 in the direction of the side wall 31 opposite the wall 32, ie to the left in Figure 3. In this way, the stop 51 is substantially vertically aligned with the stop 41 that is in the proximity of the wall 31. Therefore, when the slat 2 arrives near the high end of the slide 3b, when it has rise in the screen, that is at the end of the race rising from board 1, the two stops 41 and 51 cooperate in order of blocking the opening of the blind. Thus, the tongue 55, which is place between the slat 2 and the wall 32, in the opposite part of the stop 51 and wall 31 with respect to the slat, ensures a positioning relative of the stops 41 and 51 such that the stop 41 is on the upward trajectory of stop 51.

According to an advantageous and optional aspect of the invention, the stops 41 and 51 are each formed by a hook 42 or 52, so that once stops 41 and 51 are in contact as depicted in figures 3 and 4, is no longer possible to slap one stop with respect to the other by a transverse displacement of terminal 5 with respect to the slide.

The hooks 42 and 52 also form two complementary earrings 43 and 53 that have the function of facilitating the introduction of the final slat 2 in the slide 3b when it has Place the mounting of the roller shutter. In effect, this Introduction could be hindered by hooks 42 and 52. When the final plank 2 is pushed down from the convergent upper in tulip 4a of the stopper element 4, the slope 53 slides along slope 43, which takes the terminal 5 of wall 31, against the action of tongue 55 resting on the wall 32. The final slat 2 is thus released from the stop 41 and can then be easily introduced into the slide 3b

Figure 5 corresponds to the configuration used for dismantling the board. When you want to retrace  the stop 51 with respect to the stop 41, it is sufficient to press on the final strip 2 with a force F5 directed towards the wall 32, before interlocking hooks 42 and 52 are attached when screen upload 1 takes place. Using this action, which can be exercised by hand, without a tool, the terminal 5 is removed from wall 31 and compresses the tongue elastic 55 against wall 32. This operation thus allows retrace along a horizontal direction perpendicular to the largest dimension of the slide 3b, the second stop 51 with respect to the first stop 41. The two stops are no longer aligned vertically Bar 2 no longer stops moving upward. The board 1 can thus be removed from the slides 3a and 3b.

Preferably and according to an aspect of the invention that is not represented, there is a game between the tongue 55 and wall 32. This game allows not to generate efforts of friction parasites when the movement of the board. These frictions can, in effect, induce an effort of supplementary unwanted maneuver of the blind. In this configuration, it is necessary that this game is adapted so that the stop 41 remain on the climb path of stop 51 in both the tongue 55 is not deformed by the effort F_ {5} exercised on the final plank 2. It should be noted that, with the effort F_ {5} applied on the bar 2, the tongue 55 enters contact with the wall 32, such that it exerts an effort elastic F_ {4} that partially resists stress F_ {5}.

Whether or not the tongue 55 is in contact with the wall 32 at the end of the upward stroke of bar 2, the terminal 5 guarantees, thanks to this tongue that, in the absence of effort F_ {5,} stops 41 and 51 are aligned vertically. In others terms, the tab 55 allows to position the stop 51 by default with respect to the stop 41 to block the opening of the screen one.

It will be noted that stops 41 and 51 are arranged, with respect to screen 1, by the side of its tree winding which is represented by its geometric axis X_ {1} in figure 1. Thus, the effort F_ {5} can be exerted from the interior of a room when the winding tree is arranged in a box integrated to the masonry of the building.

Figures 6, 7 and 8 describe three other modes of realization of devices according to the invention. His principle of operation is identical to the first embodiment.

The first two variants represented in the Figures 6 and 7 propose making an elastic organ 255 or 355 in solidarity with the slide 3b. In the first case, a flexible leg is used 255. It is fixed to element 204 that forms the first stop 241 and exerts an effort F_ {4} that pushes a terminal 205 towards a wall 31 in the vicinity of which the stop 241 is fixed. The first stop 241 is located inside the slide 3b and receives in support a stop 251 formed by terminal 205. The stops 241 and 251 are aligned vertically thanks to tongue 255. When the final slat must be released, tongue 255 can be deformed by an effort F5 exerted on terminal 205 and directed towards the wall 32 of the slide opposite the wall 31.

In the second case represented in Figure 7, the first stop 341 is flush with the slide 3b. The mechanism it comprises a spring 355 that pushes a guided tip 356 in a box 357. Tip 356 thus pushed acts on terminal 305 in form of an effort F_ {4} that has the effect of aligning vertically the two stops 341 and 351. The effort F_ {4} can be defeated by an effort F5 exerted on terminal 305 in the direction of the wall 32 opposite the 31 in the vicinity of the which stop 341 is fixed.

The third variant represented in figure 8 resembles the first embodiment described with the difference that the first stop 441 is located outside the slide, in the prolongation of this one. Terminal 405 supports both the second stop 451 and elastic tongue 455 that works like the tongue 55. An effort F_ {4} of vertical alignment of stops 441 and 451 can be overcome by a horizontal thrust effort F_ {5} exerted on the bar on which the terminal is fixed 405

Other variants that combine can be provided the above embodiments and are not detailed. He second stop is not necessarily a terminal set at the end of the final slat, it can be fixed laterally on This lama. In the second embodiment, the elastic means 255 it can be independent of the stop element 204. The element of stop 304 or 404 may be fixed on one side of the box rather  than on the slide. Another alternative is to place the second stop on the side face of the side end of the slat final. The first stop is then partially arranged on the bottom of the slide, that is against a first wall of the sliding, while being less wide than the width of this  slide.

In practice, as represented in the Figure 1 with reference 4 ', an element 4, 204, 304, 404 or equivalent can be mounted on top or above the slide 3a, then a terminal 5, 205, 305 being provided or 405 at each end of plank 2.

Claims (11)

1. Device that limits the opening of a closing screen or sunscreen, comprising this screen (1) a bar (2) that moves between two slides guiding sides (3a, 3b), the device comprising:

-

for the minus a first fixed stop (41; 241; 341; 441) provided in the proximity of the high end of a first wall (31) of a sliding (3b),

-

for the minus a second stop (51; 251; 351; 451) that is highlighted with with respect to a front or side part (5; 205; 305; 405) of a lateral end of the bar; Y

-

a positioning means (55; 255; 355; 455) that allows positioning the second stop so that the two stops cooperate to block the screen opening when the second stop reaches the first top, this positioning means being (55; 255; 355; 455), at end of upward stroke of the bar (2), arranged in the proximity of a second wall (32) of the slide (3b) opposite to the first wall (31),

characterized in that the positioning means (55; 255; 355; 455) is elastic and suitable for exerting on a part (5; 205; 305; 405) that supports the second stop (51; 251; 351; 451) an effort ( F_ {4}) directed towards the first wall (31). 2. Device according to claim 1, characterized in that the effort (F4) exerted by the positioning means (55; 255; 355; 455) on the part (5; 205; 305; 405) that supports the second stop (51; 251; 351; 451) is such that the first and second stops (41, 51; 241, 251; 341, 351; 441, 451) are substantially vertically aligned, this effort being able to be overcome by an effort (F_ { 5}) directed towards the second wall (32), such that the second stop (51; 251; 351; 451) is retracted with respect to the first stop (41; 241; 341; 441). Device according to one of the preceding claims, characterized in that the first and second stops (41, 51; 241, 251; 341, 351; 441, 451) are substantially vertically aligned as long as an effort (F5), exerted in the direction of the second wall (32) against an effort (F4) exerted by the elastic means (55; 255; 355; 455) it is not sufficient to retrace the second stop (51; 251; 351; 451 ) with respect to the first stop (41; 241; 341; 441). Device according to one of the preceding claims, characterized in that the second stop (51; 251; 351; 451) is fixed on the bar (2). Device according to one of the preceding claims, characterized in that the first stop (41; 241) is disposed inside the slide (3b). Device according to one of the preceding claims, characterized in that the second stop (51; 251; 351; 451) and the elastic means (55; 255; 355; 455) are arranged on both sides of the bar (2). Device according to one of the preceding claims, characterized in that the second stop (51; 451) and the elastic means (55; 455) belong to a terminal (5; 405) fixed on a lateral end of the bar (2). Device according to one of the preceding claims, characterized in that complementary locking means (42, 52) prevent the second stop from slipping away from the first stop once these stops are in contact. Device according to one of the preceding claims, characterized in that the second stop (51; 251; 351; 451) is arranged with respect to the screen (1) on the side of the winding axis (X_ {1}) of the screen (one). Device according to one of the preceding claims, characterized in that the first stop (41) belongs to an element (4) provided with means (4a) for guiding the bar (2) and / or other elements connected to the screen ( 1) towards the slide. 11. Closing or sun protection installation comprising at least one opening limiting device (4, 5; 204, 205; 304, 305; 404, 405) according to one of the previous claims.