EP1172517A1 - Roller shutter with means for blocking the roller shutter winding tube - Google Patents

Abstract

The roller shutter, comprising a slatted panel that rolls onto and off a supporting shaft (2), has the shaft ends connected to the shaft drive bearings (4) by a locking mechanism (21) which fixes the shutter at the end of its travel. The locking mechanism has a catch (23) able to move radially and engage with notches (24) having stop edges (26) inside a ring (25) lying coaxially with the shaft.

Description

The present invention relates to a rolling shutter comprising a winding shaft on which is wound and from which an apron takes place, defined by a succession of blades, and connected, directly or through a connection, to said winding shaft, the latter being of a hand, kept in rotation at its ends by bearings support comprising a rotor and a stator and, on the other hand, operated via a drive device, said component being supplemented by means capable of ensuring the locking in rotation of said winding shaft in the direction of unfolding and at the end of the deck's deployment stroke, such blocking means being designed capable, on the one hand, of being kept in an inactive position and on the other hand and at on the contrary, to adopt an active position for blocking said shaft winding under the impulse of a control member.

This invention relates to the field of shutter manufacturing roller shutters, especially those intended to equip the door, the window or other of a building.

We already know a number of aspects rollers comprising a winding shaft on which is wound and from which takes place an apron defined by a succession of blades, driven by a device appropriate training which, depending on the case, may be of the type electric or manual.

Such a drive device is designed capable of allowing, on the one hand, the winding of said deck, in particular inside of a box. In this regard, it will be observed that said rolling shutter usually receives means capable of blocking rotation and / or to prevent the rotational drive of said shaft winding, this at the end of the winding stroke of said apron. Such means make it possible, in particular, to avoid cause damage to the resulting apron, by example, of an inappropriate traction on the latter. In fact, such means can be defined by means of the type mechanical or electrical, in particular implementing a measurement of the engine load.

This drive device is designed capable of allowing, other share, the course of said apron.

In this regard, it will be observed that, in the roller shutters of the state of the art comprising a winding shaft actuated by a manual type drive device, it is generally not provided with means capable of blocking in rotation of said winding shaft, this at the end of travel deployment of said deck.

As a result, when the deck is fully extended, it is still possible to rotate the shaft winding. We are witnessing, then, a reverse winding of the apron on said tree which generally leads to a breakage of said apron and / or a blockage of the latter to inside the box.

When the drive device is motorized type, said roller shutter can be fitted with a locking device automatic shutter at the end of the deployment stroke of this latest. The motorization system is then designed capable, on the one hand, to detect, at the end of deployment of said deployment apron, a variation and / or an increase in the load of the motor due to blockage of the bulkhead and, on the other hand, to be cut the supply of said motor.

In this regard, it will be observed that this locking device is designed capable of exerting pressure on said apron so that it is in no way compatible with an apron constituted by a succession of flexible and / or deformable blades.

Roller shutters are also known comprising a deck, connected to the winding shaft via a strap or the like, but devoid of any device for locking. Such an embodiment in no way allows detect a variation in engine load, the latter being then susceptible, after full deployment of said deck, ensure the winding of the latter in the opposite direction with the disadvantages mentioned above.

It is also known to associate a motorized end cage with said motor. stroke capable of detecting an end of travel of the deck for cutting the supply of said motor. Such an embodiment requires a learning and adjustment phase particularly tedious when installing the shutter driving on site, not to mention that for appropriate use, periodically and frequently, to make an adjustment.

We also know, through document FR-1,193,253, a roller shutter comprising an apron, defined by a succession of blades, and wound on a cylinder made up of two blades curved fixed on the cylindrical surface of two barrels rotatably mounted on a fixed shaft.

This roller shutter includes a device for limiting the unwinding of the apron consisting, on the one hand, of a socket threaded on said fixed shaft, made integral with the latter, and provided with stops and, on the other hand, by a finger locking. The latter is pivotally mounted on an axis, on the one hand, offset from the cylinder axis winding and, on the other hand, supported by two flanges rotatably mounted on said fixed shaft and integral with the blades shapely. Said locking finger is urged to pivot in direction of the stops that said socket comprises, this in position limiting the flow of the deck.

In this regard, it should be noted that, for a couple of determined rotation of the curtain winding cylinder, the force necessary to stop the progress of this deck is all the more important as the stops are close to the axis of rotation of the cylinder. Now, in this document FR-1,193,253, the stops are provided at a sleeve fitted over said fixed shaft so that these stops are in close proximity to the axis of rotation of said cylinder. This results in the blocking of the process of the apron, by the appearance of efforts particularly important at the level of said stops and the finger locking. The latter are, therefore, strongly solicited and undergo significant constraints causing degradations making the device completely inoperative limitation of the process.

The present invention is intended to overcome the disadvantages of the state of the art roller shutters.

To this end, said invention relates to a rolling shutter comprising a winding shaft on which it is wound and from which an apron takes place, defined by a succession blades, and connected, directly or through a connecting member, to said winding shaft, the latter being, on the one hand, kept rotating at its ends by support bearings comprising a rotor and a stator and, on the other hand, operated through a device drive, said component being supplemented by suitable means to ensure the locking in rotation of said winding shaft in the direction of the unfolding and at the end of the deployment course of the apron, such blocking means being designed capable, of a on the one hand, to be kept in an inactive position and, on the other share and on the contrary, to adopt an active blocking position of said winding shaft under the impulse of a control, characterized in that said blocking means are defined by a latch designed to adopt a movement radial with respect to said winding shaft and which, in position active blocking, cooperates with means forming a strike, that include said blocking means, and defined by at least a stop which comprises a crown, coaxial with said winding shaft, of diameter approximately equal to that of this last and defined at either the stator or the rotor of a support bearing while said latch is made integral, respectively, of said rotor or of said stator of this bearing support.

According to another characteristic, the latch is subjected to elastic return means capable of repelling it in a active position for locking the winding shaft in which said latch cooperates with the keeper means.

An additional feature concerns the fact that the latch is supplemented by control means associated with the latter and provided capable of cooperating with said control member to bring back, during the winding phase of the apron, said latch in inactive blocking position against the action of the means of elastic reminder.

Another feature is that the latch is mounted inside said winding shaft, the latter having an orifice through which are able to extend said control means for cooperating with said member control.

According to another characteristic of the invention, the latch is defined by an elastic blade extending in one direction substantially parallel to the axis of the winding shaft and having a free end at which said blade cooperates with said striker means.

Another characteristic is that the means of control are constituted by a control finger, defined by deformation of said elastic blade, extending radially by report to said winding shaft and able to cooperate with said control unit.

An additional characteristic concerns the fact that the free end of said elastic blade cooperates, in position blocking, with at least one radial projection, in particular of triangular shape with asymmetrical sides, constituting a stop stop and defined at the level of the crown means forming spoils.

According to another characteristic, the free end of the blade elastic is equipped with a shoe comprising, on the one hand, a first portion constituting control means defined by a control button able to cooperate with said member control and, on the other hand, a second portion able to cooperate with said keeper means, in the active blocking position of the winding shaft.

An additional characteristic concerns the fact that the second portion of this hoof takes the form of at least one tooth able to cooperate with at least one recess constituting a stop stop defined at the level of the crown of the means forming spoils.

Another additional characteristic concerns the fact that the tooth in the hoof has asymmetrical sections in view to facilitate, on the one hand, the support of this tooth on the recess walls in active shaft locking position winding and, on the other hand, the sliding of this tooth out of this obviously, this in the direction of winding of the deck, especially before the latch reaches an inactive position under the impulse of said control member.

According to another characteristic, the latch is defined by a blade made integral with said roller shutter by means of securing means, said blade extending in a direction substantially parallel to the axis of the shaft winding and having a longitudinal edge, on the one hand, provided with a chamfer and, on the other hand, through which this blade cooperates with said striker means, this in the direction of unfolding and at the end of deployment of said deployment apron.

Another characteristic is that said means of securing of the blade are designed capable of authorizing a reversible mounting of the latter on said rolling shutter to allow proper positioning of the chamfer this blade relative to the striker means.

An additional feature concerns the fact that the securing means comprise a pivot allowing a 180 ° pivoting of said blade, this along an axis perpendicular to the axis of said winding shaft.

According to another characteristic, the means of securing on the one hand, are designed capable of allowing an axial displacement of said blade along its pivot axis and, on the other hand, associated with elastic return means capable of repelling said blade, axially and along its pivot axis, in a active position for locking the winding shaft in which said blade is in cooperation with said means forming a keeper.

An additional characteristic concerns the fact that said blade has defined means for controlling its pivoting by control means intended to cooperate with said member control to bring back, in the deck winding phase, said latch in the inactive position against the action of the means of elastic reminder.

According to another characteristic, the crown, on the one hand, is defined at an end portion of the stator of a support bearing, oriented towards the rotor of this bearing support and, on the other hand, has an external face at the level of which is defined at least one stopper while said latch is secured to said rotor.

Another feature is that the crown is defined at an end portion of the stator, respectively of the rotor, of a support bearing, said portion end being oriented towards said rotor, respectively of said stator, of this support bearing, this crown having an internal face at the level of which is defined at least one stopper while said latch is made integral with said rotor, respectively with said stator.

An additional feature concerns the fact that the bearing support comprises a tubular endpiece, at least partially engaged inside said winding shaft, and at the level of which is defined said rotor in engagement with said winding shaft or even at least part of said stator, this tubular end piece receiving at least part of said blocking means.

An additional characteristic concerns the fact that said tubular endpiece is engaged inside said shaft winding and comprises a rotor which is made integral said latch while the crown of the keeper means is defined at the end portion of said stator.

According to another characteristic, the control member is defined, either by at least one of the deck blades, or by a connecting member taking the form of a flexible strip, a strap, of a metal or other blade and comprising, of a share, a first end connected to said winding shaft on which is able to wind said connecting member and, on the other hand, a second end connected to said deck, in particular at the level of a first blade equipping the latter.

An additional feature concerns the fact that the bearing support receiving said blocking means consists of said drive device, in particular of the motorized type, of said winding shaft.

The advantages of the present invention are that the blocking means are designed capable of ensuring, so automatic, locking the winding shaft at the end of deck deployment stroke. Therefore, when the apron is fully deployed, the winding shaft is immobilized in rotation and cannot be moved when it is exerted an action on the drive device, this in the direction of flow of the deck.

It will be observed that such blocking means are, again, designed able to release said winding shaft when in position fully deployed, said apron is exerted on said winding shaft through said device drive, this in the direction of the winding of said apron.

It will be noted that the blocking means are defined, of a part, by a latch and, secondly, by means forming keeper and able to cooperate with said latch. The latter as well that said keeper means are associated with at least one support bearings of said winding shaft.

In fact, the striker means are defined by at least one stopper provided at a crown whose diameter is approximately equal to that of the winding shaft. This allows, advantageously, to reduce the forces appearing at the level latch and such a stopper when blocking the winding shaft.

The locking means can be defined at a tip tubular engaged inside said winding shaft. These blocking means are therefore advantageously arranged to the interior of said winding shaft allowing a gain of substantial place.

The support bearing receiving said blocking means can, advantageously, be defined by the drive device, in particular of the motorized type, of said winding shaft.

On the other hand, the fact that said blocking means are directly controlled by a control device (blades of the apron or connecting member) allows to consider the application of these means to any type of apron, that the latter either equipped with an automatic locking device or not, that this apron is constituted by a succession of blades rigid or flexible, or even by a blind or the like.

According to another advantage, the use of a latch in the form of a reversible blade provides locking means capable of equip a rolling shutter provided with a drive device, in particular motorized, of reversible type and able to cooperate with a winding shaft at any of its ends, in particular depending on mounting constraints or other.

La figure 1 est une vue schématisée, partielle, en perspective et en coupe partielle d'un volet roulant comportant un arbre d'enroulement sur lequel est enroulé, au moins en partie, un tablier.

Les figures 2 et 3 sont des vues schématisées et de côté, correspondant à un détail du volet roulant représenté figure 1 et recevant des moyens de blocage, respectivement en position inactive et active, et comportant un levier articulé.

La figure 4 est une vue schématisée, en élévation et en coupe longitudinale selon l'arbre d'enroulement, correspondant à un mode de réalisation pour lequel les moyens de blocage comportent une lame élastique.

La figure 5 est une vue schématisée, en élévation et en coupe longitudinale selon l'arbre d'enroulement, correspondant à un autre mode de réalisation faisant appel à une lame élastique disposée à l'intérieur dudit l'arbre d'enroulement.

La figure 6 est une vue schématisée, en coupe et de côté, correspondant à une coupe selon VI-VI de l'arbre d'enroulement et des moyens formant gâche représentés figure 5.

La figure 7 est une vue schématisée, en élévation et en coupe longitudinale selon l'arbre d'enroulement, correspondant à un troisième mode de réalisation faisant appel à une lame élastique.

La figure 8 est un vue schématisée, partielle, en coupe et de côté, correspondant à une coupe selon VIII-VIII des moyens formant gâche représentés figure 7.

La figure 9 est une vue schématisée correspondant à un détail de la figure 8 et relative à des moyens de blocage de l'arbre d'enroulement.

La figure 10 est une vue schématisée, en perspective et partielle correspondant à un mode de réalisation dans lequel les moyens de blocage sont, en partie, définis par un loquet réversible.

La figure 11 est une vue schématisée, en coupe longitudinale, et partielle d'un volet roulant, comportant un loquet réversible illustré figure 10, et représenté dans le sens du déroulement du tablier et en position de fin de course de déploiement de ce dernier.

Les figures 12 et 13 sont des schémas de principe d'un détail correspondant à un loquet réversible illustré figures 10 et 11 coopérant avec des moyens formant gâche, ledit loquet étant orienté dans un sens et dans l'autre, pour tenir compte du sens de déroulement de l'arbre d'enroulement.

The present invention will be better understood on reading the description which follows, referring to the appended drawings in which:

Figure 1 is a schematic partial view in perspective and in partial section of a roller shutter having a winding shaft on which is wound, at least in part, an apron.

Figures 2 and 3 are schematic side views, corresponding to a detail of the roller shutter shown in Figure 1 and receiving blocking means, respectively in the inactive and active position, and comprising an articulated lever.

Figure 4 is a schematic view, in elevation and in longitudinal section along the winding shaft, corresponding to an embodiment for which the locking means comprise an elastic blade.

Figure 5 is a schematic view, in elevation and in longitudinal section along the winding shaft, corresponding to another embodiment using an elastic blade disposed inside said winding shaft.

FIG. 6 is a diagrammatic view, in section and from the side, corresponding to a section on VI-VI of the winding shaft and of the means forming a keeper represented in FIG. 5.

Figure 7 is a schematic view, in elevation and in longitudinal section along the winding shaft, corresponding to a third embodiment using an elastic blade.

FIG. 8 is a diagrammatic, partial view, in section and from the side, corresponding to a section along VIII-VIII of the striker means represented in FIG. 7.

Figure 9 is a schematic view corresponding to a detail of Figure 8 and relating to the locking means of the winding shaft.

Figure 10 is a schematic view, in perspective and partial corresponding to an embodiment in which the locking means are, in part, defined by a reversible latch.

Figure 11 is a schematic view, in longitudinal section, and partial of a roller shutter, comprising a reversible latch illustrated in Figure 10, and shown in the direction of the unwinding of the deck and in the end position of deployment of the latter.

Figures 12 and 13 are block diagrams of a detail corresponding to a reversible latch illustrated in Figures 10 and 11 cooperating with means forming a keeper, said latch being oriented in one direction and in the other, to take account of the direction of unwinding of the winding shaft.

The present invention relates to the field of manufacturing roller shutters intended to equip a door, a window or analog of a building.

As shown in Figure 1, such a roller shutter 1 includes a winding shaft 2 rotatably mounted relative to a part fixed of said rolling shutter 1.

This winding shaft 2 has, on both sides, a end 3, 3 'at which it cooperates with a bearing support 4 intended to keep said shaft in rotation winding 2.

Such a support bearing 4 comprises, on the one hand, a stator 7 made integral with a fixed part of said roller shutter 1 and, on the other part, a rotor 9, mounted in rotation relative to said stator 7, and made integral with said winding shaft 2.

In fact, such a support bearing 4 may include a tip tubular 10, at least partially engaged inside said winding shaft 2, and at the level of which said said is defined rotor 9 engaged with said winding shaft 2 or even (and preferably) at least part of said stator 7.

This winding shaft 2 is completed by a device 5, in particular associated with at least one of said support bearings 4, and capable of ensuring the rotation of said shaft winding 2.

In this regard, it will be observed that such a drive device 5 can, for example, be of manual type and adopt a form known in the state of the art, in particular that of a pulley operated by a cord or the like.

Said drive device 5 can also be of the type motorized and include a motor 6 as visible, in particular, in Figures 1 to 3.

It will be observed that such a motor 6 can, according to a mode of non-limiting embodiment, be of tubular type and include, on the one hand, a stator 7 associated with a fixed part of the shutter rolling 1, in particular through a base 8 and, on the other hand, a rotor 9 adapted to rotate the winding shaft 2 and made integral with the latter 2, said rotor 9 being defined, in particular, by a tube engaged in said winding shaft 2.

The roller shutter 1 also comprises an apron 11, defined by a succession of blades 12, and connected to said shaft winding 2 on which is wound and from which unrolls said apron 11, this under the impulse of said device training 5.

This apron 11 has two ends 13, 14 one of which 13 is constituted by a final blade 15 which, at the end of the race deployment of said deck 11, usually comes into abutment, by example, against the shelf of a door, window or other equipped with the roller shutter 1 according to the invention.

The other end 14 of this deck 11 is constituted by a first blade 16 connected, directly or through link member 17, said winding shaft 2.

In this regard, it will be observed that such a liaison body 17 adopts, for example, the shape of a flexible strip 18 (FIGS. 2 and 3), a strap, a metal blade or the like. Such an organ of link 17 comprises, on the one hand, a first end 19 connected to said winding shaft 2 on which is able to this connecting member 17 is wound up. The latter 17 comprises, on the other hand, a second end 20 connected, for its part, said apron 11, in particular at the level of said first blade 16 equipping this one.

This roller shutter 1 is completed by means 21 suitable for blocking the rotation of said winding shaft 2 in the direction of the unfolding and at the end of the deployment course of the apron 11.

Such blocking means 21 are designed capable, on the one hand, of be kept in an inactive position and on the other hand and at on the contrary, to adopt an active position for blocking said shaft winding 2, this under the impulse of a control member 22.

Such a control member 22 can be formed, either by at least one of the blades 12 of the deck 11, either by a member of link 17 as described above and defined, for example, by a flexible band 18, a strap, a metal blade or the like.

Another feature of the present invention is what the blocking means 21 are defined, on the one hand, by a latch 23 associated with either the rotor 9 or the stator 7 from one to less of the support bearings 4 of said winding shaft 2.

These blocking means 21 are defined, on the other hand, by means 24 forming a keeper that comprises, respectively, said stator 7 or said rotor 9 of this support bearing 4.

In this regard, it will be observed that such means 24 forming a waste are designed capable of cooperating with said latch 23 to ensure locking in rotation of said winding shaft 2, this in active position of said locking means 21. Such a cooperation is ensured at the end of the deployment of the apron 11 and in the direction of unfolding thereof.

On the contrary, in the inactive position of these blocking means 21, the cooperation between said keeper means 24 and said latch 23 is interrupted so that said winding shaft 2 is capable of being rotated via of said drive device 5.

It will be observed that said blocking means 21 are designed to interrupt such cooperation, in particular, by winding phase of said deck 11 and from a position in which said apron 11 is at the end of its travel deployment.

An additional feature of the present invention consists in that said means 24 forming a keeper are defined by a crown 25, preferably coaxial with the shaft winding 2 and at which level is defined at least a stopper 26 able to cooperate with said latch 23, this in the direction of the unfolding and at the end of the deployment race apron 11.

As visible in the figures of the attached drawings, said crown 25 preferably includes a plurality of stops stop 26 arranged, in particular at regular intervals, in periphery of said crown 25.

Such an embodiment makes it possible to avoid long and tedious operations for adjusting the cooperation position between the means 24 forming a keeper and said latch 23.

According to another characteristic, said latch 23 is subjected to elastic return means 27 capable of repelling this latch 23 in an active position for locking the winding shaft 2 by means 21. In this position, said latch 23 cooperates with said means 24 forming a keeper.

This latch 23 is, moreover, supplemented by control means 28 associated with said latch 23 and provided capable of cooperating with said control member 22. Such cooperation is intended returning said latch 23 to an inactive position of the means blocking 21 of the winding shaft 2. In this position said latch 23 no longer cooperates with the means 24 forming a keeper so that said winding shaft 2 is, then, susceptible to be rotated through said device training 5.

In this regard, it will be observed that the cooperation between the said control means 28 and the control member 22 operates against the action of the elastic return means 27, this in phase of winding said apron 11, in particular from the position in which the latter 11 is fully deployed.

There is shown in Figures 1 to 3 a first embodiment of the present invention corresponding to a latch 23 defined by a lever 29 articulated around a substantially parallel axis 30 to the axis 31 of rotation of the winding shaft 2.

As visible in FIGS. 2 and 3, this lever 29 includes a first arm 32 provided, in particular at its end 33, attachment means 34. Such attachment means 34 are designed able to cooperate with the means 24 forming a keeper, this in the locking position of said winding shaft 2 by the locking means 21 as shown in FIG. 3.

Such a lever 29 also comprises a second arm 35, in particular located in the extension of the first arm 32, and defining said control means 28 intended to return said latch 23 in the inactive position.

According to a first embodiment not shown, said latch 23 can be made integral with at least one of the bearings support 4 of the winding shaft 2. The latter 2 is, then, provided with said means 24 forming a keeper.

However and according to a preferred embodiment, said latch 23 is secured to said winding shaft 2 (in particular via the rotor 9), in particular at one 3 ends 3, 3 'of the latter 2 as shown in Figures 2 and 3.

In these same figures, it will be noted that the means 24 forming keeper are defined by at least one stopper 26 that comprises a crown 25 defined at the level of at least one said support bearings 4 (in particular of the stator 7) of the shaft winding 2.

In this regard, it will be observed that, according to a preferred mode of embodiment of the present invention, the support bearing 4, comprising the means 24 forming a keeper, is constituted by a fixed part of the drive device 5 of the shaft winding 2.

As shown in Figures 1 to 3, the roller shutter 1 according to the invention can, advantageously but not limiting, present a drive device 5 of motorized type comprising a motor 6, in particular an electric motor.

In this case, the crown 25 of the means 24 forming a keeper is constituted by a fixed part of this motor 6, more particularly by the stator 7 and / or the base 8 of the latter 6.

In Figures 1 to 3, there is shown a mode of embodiment in which said latch 23 is defined by a lever 29 articulated around an axis 30 substantially parallel to the axis 31 of rotation of the winding shaft 2.

In Figures 4 to 13, there are shown modes of embodiment corresponding to blocking means 21 comprising a latch 23 designed capable of adopting a radial movement by report to said winding shaft 2. This latch 23, in position active locking of the shaft 2, cooperates with means 24 forming a keeper (which includes said blocking means 21) defined by at least one stopper 26 that comprises a ring 25, coaxial with said winding shaft 2, and diameter approximately equal to that of this winding shaft 2.

According to a first type of embodiment, this crown 25 is defined at stator 7 of a support bearing 4 while said latch 23 is made integral with the rotor 9 of this bearing support 4.

However, according to a second type of embodiment, this crown 25 is defined at the level of the rotor 9 of a support bearing 4 while that said latch 23 is made integral with the stator 7 of this bearing support 4.

Figures 4 to 9 show embodiments of the present invention for which said latch 23 is defined by an elastic blade 36 extending in a direction substantially parallel to the axis 31 of rotation of said shaft winding 2.

Such an elastic blade 36 has a free end 37 at level of which said blade 36 is intended to cooperate with said means 24 forming a keeper, this in an active position means 21 for blocking the winding shaft 2.

It should be noted that the elastic nature of said blade 36 makes it possible to design the latter 36 so that it comprises, in itself, elastic return means 27 capable of push this blade 36 into said active blocking position of the winding shaft 2.

Such an elastic blade 36 also comprises means for control 28 which, as described above, are provided capable of cooperate with the control member 22 to bring back, in phase winding of the deck 11, said latch 23 in a position inactive locking means 21 of the winding shaft 2, this against the action of the return means 27.

It has been shown in Figures 4 to 6, modes of embodiment in which said control means 28 are constituted by a control finger 38 extending radially with respect to said winding shaft 2.

Such a control finger 38 is defined, in particular, by deformation of said blade 36 and is designed capable of cooperating, as the case may be, with the deck 11 (FIG. 4) or with a link 17 (Figure 5).

In this regard, it has been represented in FIG. 4, on the one hand, in lines continuous (end position of deployment of said deck 11) and, on the other hand, in broken lines (winding phase and / or unwinding of the deck 11), an elastic blade 36 of which the control finger 38 is able to cooperate, for example, with the blades 12 of an apron 11.

It will be observed that, in this figure 4, a particular embodiment in which the crown 25 of means 24 forming a keeper is defined at the level of a portion end of the stator 7 of a support bearing 4, this portion end being oriented towards the rotor 9 of this bearing support 4. This crown 25 has an external face at the level from which at least one stopper 26 is defined (projection radial, recess or the like) while said latch 23 is secured to said rotor 9.

In Figure 5, there is illustrated a winding shaft 2 in end position of deployment of the deck 11, said winding shaft 2 being defined by a tube 39 on which rolls up and from which takes place said apron 11.

It will be observed that, in this case, said elastic blade 36 is mounted inside said tube 39 of the winding shaft 2 and that the latter 2 has an orifice 40 through which is able to extend said control finger 38 to cooperate with a control member 22.

According to a preferred embodiment, said apron 11 is connected to said winding shaft 2 via a connecting member 17 capable of constituting said control member 22 with which said control finger 38 cooperates.

FIG. 6 shows means 24 forming a keeper and adopting the shape of a crown 25 comprising, on its face internal, at least one radial projection 41 capable of defining a stopper 26. This radial projection 41 adopts, for example, a triangular shape with asymmetrical sides or may appear in the form of a hanging hook or the like.

This crown 25 is, in fact, formed at a portion stator end 7 (oriented towards said rotor 9) a support bearing 4 while the rotor 9 of the latter 4 receives said elastic blade 36. A reverse design is, however possible. The crown 25 then being formed at level of an end portion of the rotor 9 (oriented in direction of said stator 7) of a support bearing 4 while the stator 7 of the latter 4 receives said elastic blade 36.

It will be observed, in this FIG. 5, that the elastic blade 36 presents, according to a particular but non-limiting mode of realization, a round section. Such an elastic blade 36 can still be of the plane type.

In Figures 7 to 9 there is shown an elastic blade 36 according to another embodiment and whose free end 37 is equipped with a shoe 42 comprising, on the one hand, a first portion 43 constituting control means 28 defined by a control button 44 able to cooperate with said apron 11 or, according to the preferred embodiment visible in FIG. 7, with said connecting member 17. This shoe 42 comprises, on the other hand, a second portion 45 able to cooperate with said means 24 forming a keeper, this in the shaft locking position winding 2 and end of deployment of said deck 11.

In this regard, there is shown in Figure 8 a schematic view and partial of such cooperation. In this figure, we will observe that the second portion 45 of this shoe 42 adopts the form of at least one tooth 46 capable of cooperating with means 24 forming a keeper and defined by at least one recess 47 that comprises, on its internal face, a crown 25 formed at the level at least one of the support bearings 4.

As visible in figure 9 corresponding to a detail in the figure 8, the tooth 46 of the second portion 45 of the shoe 42 has asymmetrical sides 48. Such an embodiment facilitates, from a hand, the support of this tooth 46 on the walls of the recess 47 in the active shaft locking position winding 2 and, on the other hand, the sliding of this tooth 46 out of this obviously 47, this in the direction of winding of the apron 11, in particular before the latch 23 reaches a inactive position under the impulse of said control member 22.

It will be observed that said elastic blade 36 of Figures 7 to 9 can, again, be mounted inside a tube 39 forming the winding shaft 2 and that the latter has an orifice at the through which is adapted to extend said control means 28 to cooperate with a control member 22.

It appears from FIGS. 7 to 9 that the crown 25 is, in fact, formed at an end portion of the stator 7 (oriented towards said rotor 9) of a support bearing 4 while the rotor 9 of the latter 4 receives said blade elastic 36. A reverse design is, however possible. The crown 25 then being formed at the level an end portion of the rotor 9 (oriented in the direction said stator 7) of a support bearing 4 while the stator 7 of the latter 4 receives said elastic blade 36.

Another embodiment has been represented in FIGS. 10 to 13. said blocking means 21 defined by a latch 23 and by means 24 forming a keeper which can take the form of a crown 25 having the characteristics described above.

In fact, such a latch 23 is defined by a blade 49 made integral with said roller shutter 1 by means of joining 50. This blade 49 extends in a direction substantially parallel to the axis 31 of the winding shaft 2 and has a longitudinal edge 51, on the one hand, oriented in direction of means 24 forming a keeper and, on the other hand, suitable for cooperate with the latter 24 in the direction of development and in deployment limit switch for said deck 11.

It will be observed that this blade 49 comprises, at this edge longitudinal 51, a chamfer 52 designed capable of facilitating the disengagement of said blade 49 from the means 24 forming a keeper, this in the direction of winding of said apron 11, from the end position of the latter 11. In this regard, we will observe that, for a blocking in rotation of said shaft winding 2 in the direction of unwinding and at the end of travel deployment of the deck 11, said blade 49 comes to cooperate with the means 24 forming a keeper this at its edge longitudinal 51 and on the side opposite the chamfer 52 (FIGS. 12 and 13).

According to another characteristic of this embodiment, the securing means 50 of the blade 49 are designed capable of ensure a reversible mounting of the latter 49, this in view to allow proper positioning of the chamfer 52 of this blade 49 relative to the means 24 forming a keeper.

In fact, such joining means 50 allow, advantageously, to modify the position of said blade 49 by so as to adapt to the direction of unwinding D of the tree winding 2 as shown in Figures 12 and 13.

According to a preferred embodiment, such means of joining 50 comprise a pivot 53 allowing a 180 ° pivoting of said blade 49, this along an axis 54 perpendicular to the axis 31 of said winding shaft 2.

Said pivot 53 then makes it possible to turn over this blade 49 to move from a position shown in FIG. 12 to a position shown in Figure 13, and vice versa.

Another characteristic of the invention consists in that the securing means 50 of said blade 49 are designed capable to authorize an axial displacement of this blade 49 relative to the roller shutter 1, this along the pivot axis 54 thereof 49.

In addition, the blade 49, defining said latch 23, is subjected to elastic return means 27 capable of repelling it in a active position for locking the winding shaft 2 in which this blade 49 is in cooperation with the means 24 forming a keeper.

In fact and as seen in Figures 10 and 11, such elastic return means 27 are associated with the means of joining 50 of the blade 49 to said rolling shutter 1 and are able to repel this blade 49 towards said means 24 forming a keeper, this through a axial movement of this blade 49 along its axis 54 of pivoting.

It will be observed that such return means 27 can, here again, be defined by a return spring or the like.

In addition and as mentioned above, said latch 23 is completed by control means 28, associated with the blade 49, defined by a control finger 38, and provided capable of cooperating with said control member 22, the latter 22 adopting, by example, the shape of a blade 12 of the deck 11 or of a link 17 as mentioned above.

In this regard, it will be observed that such cooperation allows, part, to maintain said blade 49 in the inactive position against the action of the return means 27, this in the winding phase and of the deck 11, outside the end position of course of the latter 11.

This cooperation allows, on the other hand, to bring said blade 49 in an inactive position against the action of the means of reminder 27, this in the winding phase of said deck and from the latter's end position 11.

According to another characteristic, the blade 49, defining said latch 23, comprises means capable of controlling its pivoting.

In fact, such pivot control means are defined by said control finger 38 associated with said blade 49 and suitable to cooperate with said control member 22 to bring back and maintain said blade 49 in the inactive position against the action return means 27.

As visible in FIG. 10, said control finger 38 comprises means for receiving (in particular a groove) of a tool, in particular a screwdriver or the like, intended to ensure the inversion of said blade 49.

So, using this tool, we push back the control finger 38 axially along the pivot axis 54 of the blade 49, this against the action of the return means 27, so as to bring the blade 49 in an inactive position. We then provide the 180 ° pivoting of this blade 49 around the axis 54 of pivoting before removing the tool which brings back the blade 49 in its active position under the impulse of said means of reminder 27.

In this regard, it should be noted that said control finger 38 must be made available for such intervention. Also and as shown in FIG. 11, this control finger 38 can be located at a gap 57 defined between the bearing support 4 (in particular its stator 7) and the winding shaft 2.

Such a control finger 38 can also be made accessible. through an orifice that includes said winding shaft 2 inside which such a blade can be mounted 49 (solution not shown).

As mentioned above, said blade 49 is made integral of said roller shutter 1 by means of solidarity 50.

Also and according to a first embodiment not shown, said blade 49 is made integral with stator 7 of a bearing support 4 while the means 24 forming a keeper are defined by at least one stopper 26 which comprises a crown 25 (in particular at the level of its internal face) formed at the level of a end portion of the rotor 9 (oriented towards said stator 7) of this support bearing 4.

However and according to a preferred embodiment shown, more particularly, Figures 10 to 13, said blade 49 is made integral with the rotor 9 of a support bearing 4 while the means 24 forming a keeper are defined by at least one stop stop 26 that comprises a crown 25 (in particular at its inner face) formed at an end portion of the stator 7 (oriented towards said rotor 9) of this bearing support 4.

According to a particular embodiment visible in FIG. 11, this blade 49 can be made integral with a console 55 that comprises a wheel 56, on the one hand, engaged inside said winding shaft 2 defined by a tube 39 and, on the other hand, associated with the rotor 9 of a support bearing 4 or defining such rotor 9.

Figures 12 and 13 are represented, block diagrams corresponding to embodiments using a support bearing 4 having for one (FIG. 12) a sense of unwinding D in a certain direction and for the other (Figure 13) a direction of unwinding D in the opposite direction.

The presence of a reversible blade 49 allows, by simple pivoting of this blade 49, to adapt to the direction of unwinding D of such a support bearing 4.

According to another characteristic of the present invention, such a support bearing 4 comprises a tubular end piece 10, at least in part engaged inside said winding shaft 2, and receiving at least part of said blocking means 21. Au level of this tubular nozzle 10 is defined said rotor 9 in taken with said winding shaft 2, or even (and preferably) at least part of said stator 7.

According to a particular embodiment visible in Figure 5, said tubular end piece 10 is engaged inside said shaft winding 2 and has a rotor 9 which is rendered integral with said latch 23 while the crown 25 means 24 forming a keeper is defined at the end portion of said stator 7 at least partially engaged in said shaft winding 2.

It should be noted that such an embodiment can, also, be considered for the roller shutters 1 shown Figures 4, 7 and 11. In such cases, said tree winding 2 can be provided with an orifice capable of being crossed by a control means 28 for its cooperation with a control member 22.

According to another characteristic of the present invention, the support bearing 4 receiving said blocking means 21 is constituted by said drive device 5, in particular of motorized type 6, of said winding shaft 2.

More particularly, Figures 12 and 13 show block diagrams corresponding to embodiments using a motorized drive device 5 comprising for one (FIG. 12) a motor 6 of the type on the right with a sense of unwinding D in a certain direction and for the other (figure 13) a motor 6 of the type on the left with a direction of unwinding D in an opposite direction.

It should be observed that the embodiments making use of a latch 23 in the form of a reversible blade 49 have many advantages.

Indeed, when installing a rolling shutter 1 to level of a building, it is possible to install the device drive 5 on one side or the other of said shaft winding 2, without a priori worrying about the positioning of the blade 49 knowing that the reversible nature of the latter 49 allows adjustment, a posteriori, of the orientation of this blade 49 as a function of the direction of unwinding of the deck 11 for proper operation of the locking means 21.

This allows, for example, for reasons of convenience or constraints (electrical connection ...) to mount a device 5 motorized drive on one side rather than the other of said winding shaft 2 and subsequently adapt, on the one hand, the direction of rotation of the rotor 9 of the motor 6 and, on the other hand, the orientation of the reversible blade 49.

It appears from the above description that the means of blocking 21, object of the present invention, are defined by particularly clever means capable of overcoming the disadvantages encountered for rolling shutters in the state of the technique.

Such blocking means 21 can, moreover and so advantageous, equip either a rolling shutter 1 equipped a drive device 5 of manual or motorized type.

Claims (21)

Roller shutter (1) comprising a winding shaft (2) on which is wound and from which a deck (11) is unwound, defined by a succession of blades (12), and connected, directly or through a connecting member (17), to said winding shaft (2), the latter (2) being, on the one hand, kept in rotation at its ends (3, 3 ') by support bearings (4) comprising a rotor (9) and a stator (7) and, on the other hand, actuated by means of a drive device (5), said flap (1) being completed by means (21) suitable for blocking the rotation of said winding shaft (2) in the direction of unwinding and at the end of the deck deployment stroke (11), such blocking means (21) being designed, on the one hand, to be maintained in an inactive position and, on the other hand and on the contrary, to adopt an active position for blocking said winding shaft under the impulse of a control member (22), characterized by the fact that said locking means (21) are defined by a latch (23) designed capable of adopting a radial movement relative to said winding shaft (2) and which, in the active locking position, cooperates with means (24 ) forming a keeper, which comprise said blocking means (21), and defined by at least one stop (26) which comprises a ring (25), coaxial with said winding shaft (2), of diameter approximately equal to that of the latter (2) and defined at either the stator (7) or the rotor (9) of a support bearing (4) while said latch (23) is made integral, respectively, with said rotor (9 ) or of said stator (7) of this support bearing (4). Roller shutter (1) according to claim 1, characterized in that the latch (23) is subjected to elastic return means (27) capable of pushing it back into an active position for blocking the winding shaft (2 ) in which said latch (23) cooperates with the means (24) forming a keeper. Roller shutter (1) according to claim 2, characterized in that the latch (23) is completed by control means (28) associated with the latter (23) and provided capable of cooperating with said control member (22) to bring back, in the winding phase of the apron (11), said latch (23) in the inactive blocking position against the action of the elastic return means (27). Roller shutter (1) according to claim 3, characterized in that the latch (23) is mounted inside said winding shaft (2), the latter (2) having an orifice (40) through which are able to extend said control means (28) in order to cooperate with said control member (22). Roller shutter (1) according to any one of claims 1 to 4, characterized in that the latch (23) is defined by an elastic blade (36) extending in a direction substantially parallel to the axis (31) of the winding shaft (2) and having a free end (37) at which said elastic blade (36) cooperates with said means (24) forming a keeper. Roller shutter (1) according to claims 3 and 5, characterized in that the control means (28) consist of a control finger (38), defined by deformation of said elastic blade (36), extending radially relative to said winding shaft (2) and able to cooperate with said control member (22). Roller shutter (1) according to any one of claims 5 or 6, characterized in that the free end (37) of said elastic blade (36) cooperates, in the locked position, with at least one radial projection (41 ), in particular of triangular shape with asymmetrical sides, constituting a stop (26) and defined at the level of the crown (25) of the means (24) forming a keeper. Roller shutter (1) according to any one of claims 5 or 6, characterized in that the free end (37) of the elastic blade (36) is equipped with a shoe (42) comprising, on the one hand , a first portion (43) constituting control means (28) defined by a control button (44) capable of cooperating with said control member (22) and, on the other hand, a second portion (45) capable of cooperate with said means (24) forming a keeper, in the active position for blocking the winding shaft (2). Roller shutter (1) according to claim 8, characterized in that the second portion (45) of this shoe (42) takes the form of at least one tooth (46) capable of cooperating with at least one recess (47) constituting a stop (26) defined at the level of the crown (25) of the means (24) forming a keeper. Roller shutter (1) according to claim 9, characterized in that the tooth (46) which the shoe (42) comprises has asymmetrical sections (48) in order to facilitate, on the one hand, the support taking this tooth (46) on the walls of the recess (47) in the active position for blocking the winding shaft (2) and, on the other hand, the sliding of this tooth (46) out of this obviously ( 47), this in the direction of winding of the apron (11), in particular before the latch (23) reaches an inactive position under the impulse of said control member (22). Roller shutter (1) according to any one of claims 1 to 4, characterized in that the latch (23) is defined by a blade (49) made integral with said roller shutter (1) by means of fastening means (50), said blade (49) extending in a direction substantially parallel to the axis (31) of the winding shaft (2) and having a longitudinal edge (51), on the one hand, provided with 'a chamfer (52) and, on the other hand, through which this blade (49) cooperates with said means (24) forming a keeper, this in the direction of unwinding and at the end of travel of deployment of said deck (11). Roller shutter (1) according to claim 11, characterized in that said means for securing (50) the blade (49) are designed capable of allowing reversible mounting of the latter (49) on said roller shutter (1) in view of allowing appropriate positioning of the chamfer (52) of this blade (49) relative to the means (24) forming a keeper. Roller shutter (1) according to claim 12, characterized in that the securing means (50) comprise a pivot (53) allowing a 180 ° pivoting of said blade (49), this along an axis (54) perpendicular to the axis (31) of said winding shaft (2). Roller shutter (1) according to claim 13, characterized in that the securing means (50) are, on the one hand, designed capable of allowing axial movement of said blade (49) along its pivot axis (54) and , on the other hand, associated with elastic return means (27) capable of pushing said blade (49) axially and along its pivot axis (54), in an active position for blocking the winding shaft ( 2) in which said blade (49) is in cooperation with said means (24) forming a keeper. Roller shutter (1) according to claim 14, characterized in that said blade (49) comprises means for controlling its pivoting defined by control means (28) intended to cooperate with said control member (22) to bring back , in the winding phase of the apron (11), said latch (23) in the inactive position against the action of the elastic return means (27). Roller shutter (1) according to any one of claims 1 to 10, characterized in that the crown (25), on the one hand, is defined at an end portion of the stator (7) of a support bearing (4), oriented in the direction of the rotor (9) of this support bearing (4) and, on the other hand, has an external face at the level of which at least one stop (26) is defined while that said latch (23) is made integral with said rotor (9). Roller shutter (1) according to any one of claims 1 to 15, characterized in that the crown (25) is defined at an end portion of the stator (7), respectively of the rotor (9), a support bearing (4), said end portion being oriented in the direction of said rotor (9), respectively of said stator (7), of this support bearing (4), this ring having an internal face at the level of which is defined at least one stop (26) while said latch (23) is made integral with said rotor (9), respectively with said stator (7). Roller shutter (1) according to any one of the preceding claims, characterized in that the support bearing (4) comprises a tubular end piece (10), at least partially engaged inside said winding shaft (2) , and at which said rotor (9) is defined in engagement with said winding shaft (2) or even at least part of said stator (7), this tubular end piece (10) receiving at least part of said means (21) blocking. Roller shutter (1) according to claims 17 and 18, characterized in that said tubular endpiece is engaged inside said winding shaft (2) and comprises a rotor (9) of which said latch (23) is made integral while the crown (25) of the means (24) forming a keeper is defined at the end portion of said stator (7). Roller shutter (1) according to any one of the preceding claims, characterized in that the said control member (22) is defined either by at least one of the blades (12) of the deck (11), or by a link (17) taking the form of a flexible strip (18), a strap, a metal blade or the like and comprising, on the one hand, a first end (19) connected to said winding shaft (2 ) on which is able to wind said connecting member (17) and, on the other hand, a second end (20) connected to said deck (11), in particular at a first blade (16) equipping this last (11). Roller shutter (1) according to any one of the preceding claims, characterized in that the support bearing (4) receiving said blocking means (21) is constituted by said drive device (5), in particular of the motorized type, of said winding shaft (2).

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