EP2085565B1 - Device preventing the lifting of a covering element of a closure device, such as a roller shutter, blind, mosquito net or similar. - Google Patents

Description

The invention relates to a device for preventing the lifting of a shutter element, such as a roller shutter, awning, insect screen or the like, consisting of a blade or threshold bar designed to be made integral with the said element. occultation and having designed ends adapted to move in guiding slides of the occulting element, said anti-lifting device further comprising at least one latch adapted to occupy at least one unlocked position and a locking position. The invention also relates to a closure system, such as roller shutter, mosquito net or the like, comprising such an anti-lift device.

The present invention relates to the field of building closure systems, such as shutters, mosquito nets, blinds or other, and relates, in particular, to the security of this type of closure system.

In the field of building closures, more particularly roller shutters, it is already known various anti-lifting devices intended to prevent the apron of these shutters can be opened from outside a window. dwelling.

In this regard, it should be recalled that such a shutter usually comprises an apron consisting of a juxtaposition of blades at least articulated with respect to each other. The ends of these blades are caused to move in guiding slides extending laterally under a box usually housing the winding mechanism of said apron.

About this mechanism, it comprises, in a conventional manner, a winding tube whose rotation control is manual or motorized. Between the first plate of the deck and said winding tube, are interposed interlocking devices in the form of articulated links having the function, when the deck is deployed, to exert some pressure on the deck. It can not be pushed manually upward, for example during an attempted break-in. However, as is clear from the foregoing description, it is imperative that the apron of the shutter is fully deployed, otherwise these locking devices can not exercise on this deck their blocking pressure. In particular, this blocking can not be guaranteed when the apron is brought into a perforated position.

It is further understood that such locking devices exerting pressure on the concealment element through the drive mechanism have utility only if the concealment element has a certain rigidity. In particular, such devices are not applicable to blinds whose occulting element is made of a flexible material, especially a fabric. In this case, the holding in the deployed position of the occulting element can intervene only through the blade defining the threshold bar which is equipped with this occulting element at its lower end. Just like the blades of a shutter apron, this threshold bar is guided in its movements through guide lateral slides.

Thus, it is known to equip the ends of this threshold bar with a latch that can be pushed manually in the locking position to cooperate with an opening or a stop at said guide slides acting as strikes. .

Thus, to raise the blocking element it is first necessary to unlock from the interior of the dwelling the aforementioned latches.

If such a manual control is compatible with manual drive means of the concealment element, in the case of a motorized drive, the locking and unlocking of this threshold bar must take place automatically.

In this context, it has already been developed powerful devices, but for as much complex design or bulky.

So, it is for example known by the document DE-A-196 48 177 an anti-lifting device which, as described above, consists in equipping the final blade of the awning or shutter latches acting in the axial direction of this blade.

More precisely, these latches are pushed into the lateral guide slides under the impulse of a spring.

In their active blocking position the free end of these latches is T-shaped so as to hook a stop forming a keeper arranged at the bottom of the slide. It is assumed here that the various blades of a rolling shutter apron are movable together in the deployment direction of the latter so as to confer on this deck a perforated position.

Exactly, this relative mobility of the blades is used between them for, through the displacement of a previous blade, act via a strap on the latches equipping the final blade. This action consists of a control in rotation of these latches in the initial phase of folding of the apron. Under the effect of this rotation, the latches have, in the right of the stop forming a strike at the bottom of a slide inclined clearance profile allowing these latches to escape from these stops or strikes and allow the opening of the shutter.

It is therefore through a traction exerted on the occulting element that the unlocking of the final blade or threshold bar occurs.

Thus, during an attempted break-in, it is sufficient for the speaker to act on the concealment element itself, while trying to push it upwards, so that the unlocking of the device intervenes. anti-uplift and that entry into the premises is facilitated.

In other words, this device of the state of the art is effective only applied to a roll shutter apron and in addition to the locking devices, as described above, capable of exerting on this deck a vertical blocking pressure under the impulse of the drive mechanism.

He is still known by the document EP-A-1270865 a blind comprising, as a concealment element, a fabric provided, at the bottom edge of a guided threshold bar, at its ends by lateral guide slides. The ends of this threshold bar are again provided with defined latches adapted to cooperate with abutment stops or latching at the bottom of the slide. The latches here take the form of rods designed capable of pivoting about an axis perpendicular to the blind deployment plan. These rods are also subject to the action of a return spring having a tendency to push them back to a position of intermediate equilibrium, from which the attachment stop can push this latch, as the case may be, in an inactive position of unlocking or in an active blocking position.

More precisely, in the locking or locking position, the latch, in cooperation with said attachment stop, redan form and prevents the raising of the threshold bar. It is therefore necessary, in a first step, ensure a complementary deployment of the blind to allow the latch to exceed the attachment stop so that the spring in question can push the latch in its intermediate equilibrium position. Only then can the awning be folded up. Indeed, since this intermediate equilibrium position, the attachment stop ensures, this time, the erasure of the latch. In contrast, during deployment of the blind and from the intermediate equilibrium position, the attachment stop acts inversely by pushing the latch into an active locking position.

As can be seen from the above description, the catches act in directions opposite to the transverse median plane of the concealment element. Also, the depth of the lateral guide slides must be adapted accordingly to allow the operation of this anti-lifting device. It is obvious that the large width of these slides has a significant impact on the clear glazing.

Essentially, for the unlocking control, the threshold bar is made to execute a non-negligible amplitude expansion complementary stroke. This means that in the deployed position and below this threshold bar necessarily persists an opening corresponding to the release stroke of the rods defining the latches described above.

The present invention proposes to overcome the disadvantages of this state of the art.

For this purpose, the invention relates to a device for preventing the lifting of a closure system type roller shutter, blind, mosquito net or the like, consisting of a blade or threshold bar provided to be secured to said occluding member and having designed ends adapted to move in guide slides of the occulting element, said anti-lifting device further comprising at least one latch adapted to occupy at least one unlocked position and a locking position, characterized in that said blade comprises a first blade portion and a second blade portion movable therebetween. a defined stroke, said first blade portion further comprising means capable of pushing the latch, equipping the second blade portion, from its locked position to its unlocked position under the impulse of relative movement of said first blade portion by relative to said second blade portion.

The invention also relates to a shutter type closure system, mosquito net or the like comprising a concealment element, such as an apron, blind or other, and lateral guide slides, characterized in that it comprises a such anti-lift device.

According to another characteristic of the invention, the latch is subjected to elastic return means designed to repel it, from an unstable equilibrium position in the locking position and / or unlocking.

The advantages deriving from the present invention consist in that the unlocking control of the latch takes place under the effect of a relative displacement of the two blade parts constituting a blade, more particularly the final blade of a rolling shutter apron or the threshold bar of a blind, a mosquito net or the like.

Thus, such a final blade or threshold bar can perfectly come to rest, through its second blade portion, on the threshold of a door, window or other, completely obscuring the latter when the closing system is lowered. Indeed, the initial complementary deployment control necessary to ensure the unlocking of the latch only takes advantage of the relative mobility between said first and second blade portion.

• la figure 1 est une représentation schématisée d'un système de fermeture de type volet roulant ;
• la figure 2 est une représentation schématisée partielle et en perspective de l'extrémité d'une lame finale ou barre de seuil d'un volet roulant ou d'un store,
• les figures 3 à 8 illustrent, de manière schématisée, en élévation et en coupe, le mode de fonctionnement du dispositif d'anti-soulèvement conforme à l'invention.

The invention will be better understood on reading the following description and the attached drawings relating to an exemplary embodiment.

• the figure 1 is a schematic representation of a roller shutter type closure system;
• the figure 2 is a partial schematic representation in perspective of the end of a final blade or threshold bar of a shutter or blind,
• the Figures 3 to 8 illustrate schematically, in elevation and in section, the operating mode of the anti-lift device according to the invention.

The present invention relates more particularly to closure systems, roller shutter type, mosquito net or similar.

So and as represented in the figure 1 such a closure system 100 includes a concealment element 101, such as an apron consisting of a juxtaposition of blades often hinged together, a blind or other.

Just in the case of a blind or mosquito net, in the form of a flexible fabric canvas, which can be perforated, it is secured, at one of its ends, a mechanism to ensure its aliasing, for example a winding tube, while its opposite end receives a blade or threshold bar.

Thus, the invention relates, in particular, to an anti-lifting device 1 which comes to equip such a closure system. This anti-lifting device 1 is constituted by a blade capable of defining, substantially, a blade of a rolling shutter apron or folding shutter, or sectional door, or a blind threshold bar, mosquito net or the like.

Already it should be noted that in the case of an apron composed of a juxtaposition of blades, if each of the latter can be defined by such an anti-lifting device 1, it will be constituted, preferentially, of the final blade as wish to represent it the Figures 2 to 8 attached drawings.

It will be noted, once again, that the present invention can not be limited to such an application of the anti-lifting device to the final blade of a shutter-type closure system or the like.

The figure 2 represents, partially and in perspective, a final blade or threshold bar 2 corresponding to this anti-lifting device. For ease of understanding, this final blade or threshold bar will be systematically designated "blade" in the following description.

Thus, the blade 2 has lateral ends 3 which are designed to move, during deployment or folding of the occulting element 101 which is made integral with said blade 2, in guide slides 4 that we see illustrated in the figures 1 and 3 to 8 .

Usually, such a slide 4 borrows a U-shaped structure and extends laterally over the entire height of the opening in a construction, corresponding to a door or window, that closes the closing system 100.

To return to the anti-lifting device 1, it comprises at least one latch 5 which is designed capable of cooperating with at least one stopper 6, preferably formed at such a guide slide 4, to ensure the blocking displacement of the blade 2 at least one determined direction. Often, it will be the direction of folding of the occulting element 101, identified by the arrow 7 in the Figures 5 to 7 attached drawings.

According to a feature of the invention, this blade 2 of the anti-lifting device 1 comprises a first blade portion 8 and a second blade portion 9 which are telescopic relative to each other in the direction of displacement of the occulting element 101, in this case in the direction of displacement of the blade 2 in the guide slides 4.

More particularly, these two blade portions 8, 9 have a mobility in a predefined amplitude stroke. In the embodiment that is shown in the figure 2 the first blade portion 8 is slidably mounted above the second blade portion 9. In the case of a final blade of a roller shutter apron or a threshold bar, said second blade portion 9 is often caused to rest on the threshold of a door, window or the like, when the occulting element is completely lowered. On this figure 2 , it has also been represented the lower edge 11 of this second blade portion 9 equipped with a compressible seal 12.

Note also that to avoid dislocation of said blade portions 8, 9, the second blade portion 8 can be configured T-section at its upper edge 13, the first 8 having front walls 14 and rear 15, provided at the bottom end edge with a hooking flange adapted to cooperate with this T-shaped structure of the second blade portion 9.

Of course, the present invention can not be limited to such a connection structure between the blade portions 8 and 9.

As for the latch 5, it is mounted on the lateral end edge 16 of the blade 2, preferably the second blade portion 9. This mounting of the latch 5 is of the type pivoting about an axis 17 parallel to the longitudinal axis of the blade 2 and perpendicular to the guide slide 4, thus to the direction of movement of the concealment element.

The latch 5 comprises, on the other hand, on the one hand, a locking pin 18 designed adapted to cooperate with said stopper 6 formed at the slide 4 and, secondly, a control lever 19 s' extending with respect to the pivot axis 17 substantially diametrically opposite to the locking pin 18.

According to another feature of the invention, the blade 2 further comprises means 20 designed to push the latch 5 from a locked position 21, visible in the figures 2 , 3 and 7 in an unlocked position 22, which is shown more particularly in the Figures 4, 5 and 6 , at the impulse of a relative displacement of the first blade portion 8 with respect to the second blade portion 9 in the deployment direction of the occluding member. In fact this direction of displacement is that causing the engagement of the first blade portion 8 on the second blade portion 9. It is therefore a tightening of one with respect to the other.

Substantially, said means 20 consist of a cam device 23 in the form of a tip 24 fitted to the lateral end edge 25 of said first blade portion 8. At this end 24 is formed a cam track 26 designed apt to cooperate with the latch 5 for the aforementioned purpose, that is to say recall it from its locked position 21 in its unlocked position 22. In fact, this latch 5 is provided with a control pin 27 implanted with way adapted to cooperate with this cam track 26 of the nozzle 24.

Thus, starting from a situation as visible in the figures 2 and 3 , the occulting element 101 is in the deployed position, that is to say lowered. The latch 5 is in its locking position 21 in which its locking finger 18, in particular protruding with respect to one of the front or rear sides of said blade 2, is able to cooperate with the stopper 6 that it is seen to extend in the lateral guide slide 4. If it is desired, under these conditions, to control the folding of the occulting element 101, it is first conferred on the latter a movement of complementary deployment to allow said first blade portion 8 to move towards the second blade portion 9, along a stroke 28, shown in FIG. figure 4 . This stroke is defined so as to allow the cam track 26 of the nozzle 24 to act on the control pin 27 of the latch 5 and push it from its locked position 21 in its unlocked position 22. This has been represented in the figure 4 .

It is only beyond this race 28 corresponding to an additional deployment of the occulting element 101 that we can control the folding of the latter. Indeed, the latch 5 is then pushed substantially in the axis of the blade 2, erased position allowing free passage in front of the stopper 6 in the guide slide 4.

According to another characteristic of the invention, the anti-lifting device 1 is completed by a complementary control means 29 able to recall the latch 5, from its unlocked position 22 in its active locking position 21 to allow it to again perform the anti-lift function in the next deployment maneuver of the occulting element 101, more exactly when this occulting element 101 is again deployed as shown in FIG. figure 3 .

According to a preferred embodiment, said complementary control means 29 are defined, substantially, by the stopper 6 designed adapted to act on the control lever 19 of the latch 5 under the effect of the displacement of the blade 2 to the front of this stopper 6, more particularly from the control of folding of the occulting element 101.

In sum, after a first complementary deployment command of this occulting element 101, the latch 5 is pushed back into its unlocked position 22. It can, at this moment, pass in front of the stopper 6. 18 lock finger has escaped the latter, it pushes the latch 5 in its locked position 21 by acting on the control lever 19.

According to another feature of the invention, the latch 5 passes through an unstable equilibrium position between its locked position 21 and its unlocked position 22, while elastic return means 30 are designed to elastically push this latch 5 into the latch 5. one and / or the other locked position 21 and unlocked 22 around this position of unstable equilibrium.

Substantially, the elastic return means 30 consist of a defined spring wire or blade adapted to act on the control lever 19.

Furthermore, according to a preferred embodiment, it is precisely through these elastic return means 30 that the stopper 6 is defined capable of acting on said control lever 19 to push the latch 5 from its unlocked position. 22 in its locked position 21 during the folding of the occulting element.

This principle is more particularly illustrated in the Figures 6 and 7 .

The figure 8 more particularly represents the passage of the blocking finger 18 in front of the stopper 6 when the occulting element 101 is again deployed. In this direction the deployment of the occulting element 101 and therefore of the blade 2, this stopper 6 can be configured in the form of an inclined plane 31 to facilitate this passage of said locking pin 18. Note that under the influence of this inclined plane 31, the stopper 6 may be caused to push the latch 5 towards its unlocked position 22, without exceeding the unstable equilibrium point. Thus, once the stopper 6 has passed, the latch 5 can return to its locking position 21 under the action of the elastic return means 30.

In view of the above description, it follows that the invention responds advantageously to the disadvantages of the solutions of the state of the art.

Claims (11)

1. Device preventing the lifting of a covering element (101) of the closure system (100), such as a roller shutter, blind, mosquito net or the like, formed of a sill blade or bar (2) aimed at being made integral with said covering member (101) and including ends (3) designed capable of moving in sliding guides (4) for this covering element (101), said device preventing the lifting (1) comprising also at least one latch (5) capable of occupying at least one unlocked position (22) and a locking position (21), wherein said blade (2) includes a first blade portion (8) and a second blade portion (9) movable with respect to each other over a defined distance, said first blade portion (8) comprising also means (20) capable of pushing back the latch (5) the second blade portion (9) is provided with, from its locked position (21) into its unlocked position (22) under the action of a relative displacement of said first blade portion (8) with respect to said second blade portion (9).
2. Device preventing the lifting according to claim 1, wherein the first blade portion (8) is slidably mounted above the second blade portion (9).
3. Device preventing the lifting according to any of the preceding claims, wherein the latch (5) is mounted on a lateral end edge (16) of the second blade portion (9) pivotally about an axis (17) parallel to the longitudinal axis of the blade (2).
4. Device preventing the lifting according to claim 3, wherein the latch (5) comprises, on the one hand, a locking finger (18) and a control lever (19) extending, with respect to the axis of pivoting (17), substantially diametrically opposite the locking finger (18).
5. Device preventing the lifting according to any of the preceding claims, wherein said means (20) designed capable of pushing back the latch (5) from a locked position (21) into an unlocked position (.22) under the action of a relative displacement of said first blade portion (8) with respect to the second blade portion (9), are formed by a cam device (23) in the form of a ferrule (24) a lateral end edge (25) of said first blade portion (8) is provided with, which ferrule (24) includes a cam track (26) designed capable of cooperating with the latch (5), in particular a control pawl (27) the latter is provided with.
6. Device preventing the lifting according to any of the preceding claims, wherein the latch (5) passes through an unstable equilibrium between its locked position (21) and its unlocked position (22) position.
7. Device preventing the lifting according to claim 6, wherein the latch (5) is subjected to springy restoring means (30) designed capable of pushing it from the unstable equilibrium position into the locking (21) and/or unlocking (22) position.
8. Closure system such as a roller shutter, mosquito net or the like, comprising a covering element (101), such as an apron, blind or the like, and lateral sliding guides (4), wherein it comprises a device preventing the lifting (1) according to any of the preceding claims.
9. Closure system according to claim 8, wherein the latch (5) of the device preventing the lifting (1) is designed capable of cooperating with a stop (6) for ensuring the blocking in displacement of the covering element (101) in at least the direction of folding of the latter, and the means (20) are designed capable of pushing back this latch (5) from its locked position (21) into its unlocked position (22) under the action of a relative displacement of the first blade portion (8) towards the second blade portion (9) corresponding to a control of additional unfolding of the covering element (101).
10. Closure system according to any of claims 8 and 9, wherein the device preventing the lifting (1) is supplemented by an additional control means (29) capable of restoring the latch (5) from its unlocked position (22) into its active unlocking position (21).
11. Closure system according to claim 10, wherein the additional control means (29) are defined by the stop (6) designed capable of acting on a control lever (19) the latch (5) includes, under the action of the displacement of the blade (2) in front of the stop (6).

Images