EP3623565A1 - Closing or concealing device for a construction - Google Patents

Abstract

The invention relates to a closure or concealment device (2) for a construction, this device (2) comprises, on the one hand, motorized drive means (4) for driving this device (2) in movement between an open position and a closed or concealed position and, on the other hand, a plurality of portions (3; 3 '), which are articulated in pairs, including a final portion (3), which is intended to be positioned at least near a threshold of an opening of a construction equipped with such a device (2), and which comprises at least one cavity (31) which comprises, internally, at least part of the means motorized drive train (4). This device (2) is characterized in that it comprises, on the one hand, a detection system (5) for detecting an obstacle in the path of this device (2) and, on the other hand, control means (6) for controlling the stopping of the drive of the device (2) by the means of motorized drive (4), this in the event of detection of such an obstacle by the detection system (5). The invention also relates to a closing or concealment installation (1) for a construction, this installation (1 ) includes such a closure or concealment device (2).

Description

The present invention relates to a closure or concealment device for a construction.

This invention relates to the field of building and, more particularly, to the field of manufacturing installations designed to close an opening that a construction comprises or designed to obscure a room of such a construction. In fact, this invention will find a particularly suitable application in the context of a garage door or a roller shutter without the present invention being in any way limited thereto.

We already know closing devices which can take the form of an apron of a garage door capable of closing such a garage. Such an apron comprises a plurality of portions which are articulated two by two including a final portion. These portions are each made up of a section, in particular taking the form of a panel, so as to define a sectional garage door leaf. This deck can be completed by motorized drive means which comprise, on the one hand, a motor usually fixed to the garage ceiling or on a structure fixed to the ceiling and / or on the walls of the garage and, on the other hand, a transmission member, in engagement with the deck and with the motor, and configured to exert traction on this deck in order to fold it up as well as to exert repulsion on this deck in order to deploy it. Such a motor and such a transmission member represent a considerable size which is not always available for their installation in a garage. Conversely, when the deck is distant from the garage ceiling, it is necessary to use an additional structure, which is made integral with this ceiling and / or the walls of the garage, and of which said motor is made integral. In addition to the fact that this structure constitutes an additional element, the installation of such a structure requires an extension of the installation time of the garage door, which notably increases the cost of the latter.

There are also known closing devices which can take the form of a roller shutter curtain, which completes a door, a window, a French window or the like, and which makes it possible to conceal the interior of a room or at least in part to darken the interior of such a room. Again, such an apron comprises a plurality of portions which are articulated in pairs, including a final portion. These apron portions are each made up of an apron blade. This apron can be completed, on the one hand, by a winding tube on which are wound and from which the blades of the apron are unwound and, on the other hand, by motorized drive means for this tube d winding, these drive means can advantageously be located inside the winding tube. In the folded position of the deck, the blades of this deck are wound on the winding tube and the assembly, constituted by this winding tube and these blades, is housed inside a roller shutter box. This roller shutter box must therefore be dimensioned to be able to receive such an assembly so that this box often has large dimensions. These large dimensions mean that this box protrudes either from the interior wall or from the facade, which affects the aesthetics of the construction.

The present invention seeks to remedy the drawbacks of the closing and / or concealment devices of the state of the art.

Another object of the present invention is to provide a particularly compact closure or concealment device.

Yet another object of the invention is to provide a closure or concealment device which can detect an obstacle during its movement, and which can interrupt this movement when an obstacle is detected.

To this end, the invention relates to a closure or concealment device for a construction. This device comprises, on the one hand, motorized drive means for drive this device in displacement between an open position and a closed or concealed position and, on the other hand, a plurality of portions, which are articulated two by two, including a final portion, which is intended to come position at least close to a threshold of an opening of a construction equipped with such a device, and which comprises at least one cavity which comprises, internally, at least part of the motorized drive means. This device is characterized in that it comprises, on the one hand, a detection system for detecting an obstacle on the trajectory of this device and, on the other hand, control means for controlling the stopping of the drive of the device by motorized drive means, this in the event of detection of such an obstacle by the detection system.

Additionally, the cavity of the final portion also includes, internally, at least part of this detection system.

According to another characteristic, this detection system comprises, on the one hand, a blocking means which is movable between an inactive blocking position and an active blocking position, on the other hand, at least one additional blocking means which is configured to cooperate with the motorized drive means as well as with the blocking means, this in the active blocking position of this blocking means and, on the other hand, an actuating means which is configured to actuate the displacement from the blocking means from the inactive blocking position to the active blocking position, this in the event of contact with an obstacle.

Another characteristic relates to the fact that the closure or concealment device is constituted by a sectional garage door leaf which comprises a plurality of sections, which are articulated two by two, and which constitute, each, one of the portions of the device. .

Alternatively, the closing or concealment device is constituted by a roller shutter curtain which comprises a plurality of blades, which are articulated two to two, and which each constitute one of the portions of the device. This device comprises articulation means which are configured to allow a stacking of at least a portion of the portions (ie blades) of this device, more particularly inside a roller shutter box.

The invention also relates to a closure or concealment installation for a construction, this installation comprises a closure or concealment device which has the characteristics described above.

Thus, the invention relates to a closure or concealment device which comprises a final portion (section or blade) which comprises a cavity comprising, internally, at least part of the motorized drive means of this device.

In this invention, at least part of the motorized drive means is located inside the final portion.

This allows, advantageously and in the case of a roller shutter, to use an apron, which has portions (blades) which can be stacked inside a box, and which no longer require a winding tube (in particular incorporating a drive motor for this winding tube). The folded deck has a substantially reduced bulk compared to the decks of the state of the art which allows to significantly reduce the size of the box and thus improve the aesthetics of the construction.

This also makes it possible, advantageously, and in the case of a garage door, to overcome a bulky assembly (motor and transmission means), the fixing of such a motor to the ceiling, or to resort to a additional structure for mounting such an assembly.

Finally, the closure or concealment device comprises a detection system for detecting an obstacle in the path of this device as well as means for controlling the stopping of the drive of this device in the event of detection of such an obstacle. This advantageously makes it possible to interrupt the deployment of the apron if an obstacle (for example a child or any object) is on the path of this apron.

The detection system is largely housed inside the cavity of the final portion, which saves substantial space. In addition, this detection system comprises elements (blocking means, complementary blocking means, actuating means) of reduced dimensions and simple design which advantageously allows to confer increased reliability to the closure device or occultation according to the invention.

Other objects and advantages of the present invention will appear during the description which follows, relating to embodiments which are given only by way of indicative and nonlimiting examples.

• la figure 1 est une vue schématisée, en perspective et en coupe partielle d'une partie d'une installation de fermeture ou d'occultation conforme à l'invention ;
• la figure 2 est une vue schématisée, en perspective, en coupe partielle et correspond à un détail d'un dispositif de fermeture ou d'occultation, qui est conforme à l'invention, et que comporte l'installation décrite figure 1, ceci en l'absence d'obstacle ;
• la figure 3 est une vue schématisée, en perspective, en coupe partielle et correspond à une partie du dispositif de fermeture ou d'occultation illustré figure 2, ceci en l'absence d'obstacle ;
• la figure 4 est une vue schématisée et de côté d'une partie du dispositif de fermeture ou d'occultation illustré figures 1 à 3, ceci en l'absence d'obstacle ;
• la figure 5 est une vue schématisée, en perspective, en coupe partielle et correspond à un détail d'un dispositif de fermeture ou d'occultation, qui est conforme à l'invention, et que comporte l'installation décrite figure 1, ceci en présence d'un obstacle ;
• la figure 6 est une vue schématisée, en perspective, en coupe partielle et correspond à une partie du dispositif de fermeture ou d'occultation illustré figure 5, ceci en présence d'un obstacle ;
• la figure 7 est une vue schématisée et de côté d'une partie du dispositif de fermeture ou d'occultation, ceci en présence d'un obstacle.

The understanding of this description will be facilitated by referring to the attached drawings in which:

• the figure 1 is a schematic view, in perspective and in partial section of a part of a closing or concealment installation according to the invention;
• the figure 2 is a schematic perspective view in partial section and corresponds to a detail of a closure or concealment device, which is in accordance with the invention, and which comprises the installation described figure 1 , this in the absence of obstacle;
• the figure 3 is a schematic perspective view in partial section and corresponds to a part of the closure or concealment device illustrated figure 2 , this in the absence of obstacle;
• the figure 4 is a schematic side view of part of the closure or concealment device illustrated Figures 1 to 3 , this in the absence of obstacle;
• the figure 5 is a schematic perspective view in partial section and corresponds to a detail of a closure or concealment device, which is in accordance with the invention, and the installation described figure 1 , this in the presence of an obstacle;
• the figure 6 is a schematic perspective view in partial section and corresponds to a part of the closure or concealment device illustrated figure 5 , this in the presence of an obstacle;
• the figure 7 is a schematic side view of a part of the closure or concealment device, this in the presence of an obstacle.

The present invention relates to the field of building and, more particularly, the field of manufacturing installations designed either to close an opening that includes a construction, or to obscure the interior of a room that comprises such a construction or at least partly to darken the interior of such a room.

Such an installation 1 can then be a closing installation constituted by a garage door of the tilting or sequential type. This installation 1 comprises a closing device 2, which is constituted by a garage door leaf, and which closes an opening which the construction comprises. This deck (closing device 2) of a sequential garage door comprises a plurality of portions (3; 3 ') articulated two by two by means of articulation means 31. Each of these portions (3; 3' ) is then usually referred to as a section. This deck comprises, in particular, a final portion 3 (usually called final section) intended to come to be positioned near a threshold of the opening of the construction (or even in abutment against this threshold), this in the closed position of this closing device.

Alternatively, such an installation 1 can also be a concealing installation constituted by a rolling shutter which completes a door, a window or the like which closes an opening which the construction comprises. Such an installation 1 then comprises a screening device 2, which is constituted by a shutter curtain rolling, and which obscures or darkens the interior of a part of this construction. This roller shutter curtain 2 has a plurality of portions (3; 3 ') articulated two by two by means of articulation means 30. Each of these portions (3; 3') is, then, constituted by a rolling shutter deck blade. This deck comprises, in particular, a final portion 3 (constituted by a final blade) intended to come to be positioned near a threshold of the opening of the construction (or even in abutment against this threshold), this in the closed position. of this concealment device 2.

Thus, such an installation 1 for closing, respectively for concealment, then comprises a device 2 for closure, respectively for concealment.

Such a closure or concealment device 2 is movable between an open position and a closed position (in particular for a garage door leaf) or concealment (in particular for a roller shutter leaf), this according to a determined race.

Such a closure or concealment device 2 then adopts an opening limit switch as well as a closing limit switch in which this closure or concealment device 2 (more particularly the final portion 3 of this device 2) is positioned near a threshold of the opening of the construction, or even in abutment against this threshold.

Said closure or concealment installation 1 then also comprises motorized drive means 4 configured to drive said closure or concealment device 2 in movement, this between said open position and said closed position or d 'occultation.

According to the present invention, it is the closure or concealment device 2 which itself comprises such motorized drive means 4.

As mentioned above, the closure or concealment device 2 comprises a final portion 3.

Also according to the invention, this final portion 3 comprises at least one cavity 31 which comprises, internally, at least part of these motorized drive means 4.

In this regard, it will be observed that these motorized drive means 4 comprise a motor 40 which is located inside the cavity 31 of the final portion 3. Such a motor 40 comprises, on the one hand, a stator made integral fixing of this final portion 3 and, on the other hand, a rotor movable in rotation relative to the stator, more particularly inside this stator.

These motorized drive means 4 also include a transmission shaft 41 which is engaged with the motor 40 (more particularly with the rotor of this motor 40), this directly or indirectly.

Thus and according to a preferred embodiment, the motorized drive means 4 also comprise a gear train 42 which comprises, on the one hand, a first gear 420 which is integral in rotation with the rotor of the motor 40 and, on the other hand, a second gear 421, which is integral in rotation with the transmission shaft 41, and which is meshed with the first gear 420, this for a transmission shaft 41 in indirect engagement with the motor 40.

As visible in the appended figures, this transmission shaft 41 comprises, on the one hand, an internal part 410 which extends inside the cavity 31 of the final portion 3 and, on the other hand, a external part 411 which extends outside this cavity 31.

Finally, these motorized drive means 4 comprise at least one toothed wheel 43, which extends outside this cavity 31 (in particular laterally relative to the final portion 3), and which is integral in rotation with the transmission shaft 41, more particularly of the external part 411 of this transmission shaft 41.

In fact and as visible in the appended figures, these motorized drive means 4 preferably comprise two toothed wheels 43 which extend laterally with respect to the final portion 3 and externally to the cavity 31 of this final portion 3, one of which extends on one side of this final portion 3 and the other of which extends on the other side of this final portion 3.

As mentioned above, the closure or concealment device 2 is movable between an open position and a closed or concealment position. Between these positions, the closure or concealment device 2 describes a path on which this device 2 is liable to encounter an obstacle, in particular constituted by a person, an animal or an object.

According to the invention, this closure or concealment device 2 then comprises a detection system 5 for detecting an obstacle on the path of this device 2 and, on the other hand, control means 6 for controlling the stopping the drive of the device 2 by the motorized drive means 4, this in the event of detection of such an obstacle by the detection system 5.

Thus, the closure or concealment device 2 comprises a detection system 5 for detecting an obstacle.

In this regard, it will be observed that it is the cavity 31 of the final portion 3 of this device 2 which then comprises, internally, at least part of such a detection system 5.

As visible in the appended figures, such a detection device 5 comprises, on the one hand, a blocking means 50 which is movable between an inactive blocking position ( figures 2 to 4 ) and an active blocking position ( Figures 5 to 7 ), on the other hand, at least one additional blocking means 51 which is configured to cooperate with the motorized drive means 4 as well as with the blocking means 50, this in the active blocking position of this blocking means 50 (( Figures 5 to 7 ) and, on the other hand, an actuating means 52 which is configured to actuate the displacement of the locking means 50 from the inactive locking position to the active position of blocking, this in case of contact of such an actuating means 52 with an obstacle.

Another characteristic relates to the fact that the closure or concealment device 2 comprises an elastic member 6, which is fixedly secured to the final portion 3, which comprises the locking means 50, and which cooperates with the actuating means 52, this to actuate the displacement of the locking means 50 and / or of this actuating means 52.

In fact, the cooperation of the elastic member 6 with this actuating means 52 makes it possible, in the event of contact of this actuating means 52 with an obstacle, to cause the deformation of this elastic member 6 which has the effect of causing the blocking means 50 (which this elastic member 6) to pass from the inactive blocking position to the active blocking position.

In addition, cooperation with this actuating means 52 allows, after the obstacle has disappeared or been removed, this elastic member 6 to return this actuating means 52 to its initial position (corresponding to that adopted in the absence of 'obstacle).

According to a preferred embodiment, the elastic member 6 is constituted by an elastic rod 60 which comprises, on the one hand, a fixed end 61 which is fixedly secured to the final portion 3 (directly or indirectly), on the other on the one hand, a free end 62 which cooperates with the actuating means 5 and, on the other hand, an intermediate part 63, which extends between the fixed end 61 and the free end 62, and which comprises the means blocking 50.

In fact, this locking means 50 is advantageously constituted by a deformation (more particularly a corrugation, a bump, a lug or the like) of the elastic rod 60.

Another characteristic relates to the fact that such an elastic member 6 extends at least partially inside the cavity 31 of the final portion 3 of the closure or concealment device 2.

In this regard, it should be observed that this final portion 3 of the device 2 has a bottom 31 which has a slot 33 through which extends at least a portion of the elastic member 6, this to be made integral with this final portion 3 as well as to cooperate with the actuating means 52. It is also through this slot 33 that this elastic member 6 moves, in particular in the event of detection of an obstacle and under the impulse of this actuating means 52.

According to another characteristic, the closure or concealment device 2 further comprises an element 7 which comprises, on the one hand, said at least one complementary locking means 51 and, on the other hand, at least one means of reception 70 configured to receive part of the motorized drive means 4, more particularly the transmission shaft 41, in particular the internal part 410 of this transmission shaft 41.

Such an element 7 extends inside the cavity 31 of the final portion 3 of the closure or concealment device.

This element 7 extends along an axis which is at least parallel to the axis along which the transmission shaft 41 extends, see coaxial with this axis.

According to a preferred embodiment, said element 7 takes the form of a wheel.

With regard to said at least one additional locking means 51, the latter is each made up of a notch 510 and / or a tooth.

Also and according to a preferred embodiment illustrated in the appended figures, the element 7 is constituted by a toothed wheel.

Another characteristic relates to the fact that the receiving means 70 and the transmission shaft 41 (more particularly the internal part 410 of this transmission shaft 41) are configured so that the element 7 and this transmission shaft 41 are integral in rotation.

To do this and as visible in the appended figures, this receiving means 70 is constituted by a through opening of a particular shape (in particular square) configured to cooperate with the transmission shaft 41 (more particularly with the internal part 410 of this transmission shaft 41) which has a particular shape (similar to that of the through opening, in particular square) and / or which has dimensions adjusted to those of the through opening.

Yet another characteristic relates to the fact that the closure or concealment device 2 comprises at least one support 8 which is fixedly secured to the final portion 3.

According to a first embodiment, such a support 8 can be constituted by a side wall which comprises the final portion 3, more particularly that which comprises a lateral end of this final portion 3.

According to another embodiment, such a support 8 takes the form of an insert which is at least partially engaged inside the cavity 31 of this final portion 3, more particularly at a lateral end of such a final portion 3.

Such a support 8 may comprise means 80 for receiving the elastic member 6, more particularly from the fixed end 61 of the elastic rod 60 which constitutes this elastic member 6.

Such reception means 80 can take the form of an orifice or a housing. The shape and / or dimensions, on the one hand, of such an orifice or of such a housing and, on the other hand, of the elastic member 6 (more particularly of the fixed end 61 of the elastic rod 60 of this elastic member 6) are defined to ensure a fixed mounting of this elastic member 6 (more particularly of the fixed end 61 of the elastic rod 60) on said support 8.

Alternatively or (and preferably) additionally, such a support 8 includes means 81 for receiving the element 7.

Again, such reception means 81 can take the form of an orifice or a housing. The shape and / or dimensions, on the one hand, of such an orifice or of such a housing and, on the other hand, of the element 7 are defined to allow a free rotation of said element 7 inside from this orifice or this housing.

Alternatively or (and preferably) additionally, such a support 8 comprises means 82 for receiving the transmission shaft 4, more particularly from the internal part 410 and / or from the external part 411 of this transmission shaft 41 .

Again, such reception means 82 can take the form of an orifice or a housing. The shape and / or dimensions, on the one hand, of such an orifice or of such a housing and, on the other hand, of the transmission shaft 41 (more particularly of the internal part 410 and / or of the external part 411 of this transmission shaft 41) are defined to allow free rotation of said transmission shaft 41 inside this orifice or this housing.

In this regard, it will be observed that such a support 8 adopts, then, more particularly the form of a bearing configured for the reception in rotation of said transmission shaft 41.

Another characteristic relates to the fact that the receiving means 81 of the element 7 and the receiving means 82 of the transmission shaft 41 (and that includes the support 8) extend, each along an axis, these axes preferably being confused.

According to another characteristic, the closure or concealment device 1 further comprises, on the one hand, a feeler bar 9 which constitutes at least in part the actuating means 52 which comprises the detection system 5 and, on the other hand, displacement mounting means 10 of this feeler bar 9 relative to the final portion 3, more particularly on this final portion 3.

In fact, such displacement mounting means 10 are configured to allow movement of this safety edge 9 in a direction parallel to a plane along which this final portion 3 extends and / or in a direction perpendicular to a longitudinal edge that this final portion 3 comprises.

As visible in the appended figures, this feeler bar 9 takes the form of a blade 90 which has two longitudinal edges 91 each equipped with a return 92. As visible on the Figures 4 and 7 , the final portion 3 then comprises two parallel longitudinal walls 34 which each have, near its free end, a groove 35 for reception, so that it can move freely inside such a groove 35, d a return 92 from the feeler bar 9. The displacement mounting means 10 are then constituted by the returns 92 from the feeler bar 9 and by the grooves 35 of the final portion 3.

Finally, the detection system 5 includes an analysis means (not shown) for analyzing the speed and / or the torque of the motor 40 of the motorized drive means 4.

In fact, such an analysis means is more particularly configured to detect a variation in the speed and / or the torque of this motor 40, such a variation being characteristic of a contact of the feeler bar 9 (therefore of the means d 'actuation 52) with an obstacle.

As mentioned above, the closing device 2 can be constituted by a sectional garage door leaf (more particularly with push-back) which comprises a plurality of sections, which are articulated two by two, and which each constitute a portions (3; 3 ') of the closure device 2.

This closure device 2 has the characteristics described above.

Also as mentioned above, the concealment device 2 can be constituted by a roller shutter deck which comprises a plurality of blades, which are articulated two by two, and which each constitute one of the portions (3; 3 ') of the concealment device 2.

In this regard, it will be observed that such a concealment device 2 (more particularly the portions 3; 3 'of this device 2) comprises articulation means 30, which connect the portions (3; 3') two by two. articulated of this device 2, and which are configured to allow a stacking of at least part of the portions (3; 3 ') of this concealment device 2.

Such articulation means 30 then allow, advantageously, a stacking of the portions (blades) of the concealment device 2 inside a rolling shutter box. Such stacking allows a substantial saving of space compared to a rolling shutter for which the blades are wound on a winding tube and, consequently, allows a considerable reduction in the dimensions of such a box.

The invention also relates to a closing or concealment installation 1 of a construction.

This installation 1 comprises a closure or concealment device 2 which has the characteristics described above.

In particular, this installation 1 comprises a closure or concealment device 2 which comprises motorized drive means 4. As mentioned above, these motorized drive means 4 comprise at least one toothed wheel 43, which s 'extends outside the cavity 31 of a portion (3; 3') of this device 2 (more particularly outside of the cavity 31 of the final portion 3, in particular laterally with respect to this final portion 3 ), and which is integral in rotation with the transmission shaft 41 of these motorized drive means 4 (more particularly of the external part 411 of this transmission shaft 41).

As mentioned above, these motorized drive means 4 preferably comprise two toothed wheels 43 which extend laterally relative to the final portion 3 and externally to the cavity 31 of such a final portion 3, and one of which extends on one side of this final portion 3 and the other of which extends on the other side of this final portion 3.

This installation 1 then then also comprises at least one rack 11, which is intended to be fixedly secured to the masonry of the construction (directly or indirectly), and which cooperates with said at least toothed wheel 43 which comprises the means of motorized drive 4 of the closure or concealment device 2.

Preferably, this installation 1 comprises two racks 11, one of which extends on one side of the closure or concealment device 2 and cooperates with one of the toothed wheels 43 while the other extends from the on the other side of this device 2 and cooperates with the other of the toothed wheels 43.

Finally, this installation 1 also includes at least one guide slide (not shown). It is, more particularly, inside such a guide slide that the rack 11 or one of the racks 11 (as described above) is installed and that the toothed wheel 43 or l moves. one of the toothed wheels 43 (as described above).

In fact and according to a preferred embodiment, this installation 1 comprises two guide slides, one of which extends on one side of the closure or concealment device 2, internally receives one of the racks 11 and at l inside of which one of the toothed wheels 43 moves while the other extends on the other side of this device 2, internally receives the other of the racks 11 and inside which the other cogwheels 43.

In the following description, the principle of operation of this closing or concealment installation 1 will be described.

Thus, during the closure of the closure or concealment device 2 of this installation 1, this device 2 moves so that its final portion 3 is directed towards the threshold of the opening of the construction equipped with such a installation 1.

Under the effect of the displacement of this closure or concealment device 2 and when this device 2 (more particularly the final portion 3 of this device 2) enters in contact with an obstacle, the actuating means 52 (which comprises the detection system 5 of this device 2) comes into contact with this obstacle and controls the movement of the locking means 50 (which comprises this detection system 5) which passes from an inactive blocking position to an active blocking position in which this blocking means 50 cooperates with said at least one additional blocking means 51 (which this detection system 5 includes) to ensure blocking.

The blocking of said complementary blocking means 51 causes the blocking in rotation of the element 7 which causes the blocking in rotation of the transmission shaft 41 that comprise the motorized drive means 4 and, therefore, the blocking of the motor 40 (more particularly of the rotor of this motor 40) of these motorized drive means 4. This blockage results in a variation of the speed and / or of the torque of these motorized drive means 4, more particularly a variation of the speed and / or the torque of the motor 40 of these motorized drive means 4.

The detection (by the analysis means that comprises the detection system 5) of this variation in speed and / or of the torque of the motor 40 makes it possible to control a cut in the supply of this motor 40 with electrical energy and, consequently, , a stop of the drive of the device 2 by the motorized drive means 4, and, therefore, a stop of the movement of this closure or concealment device 2.

Claims (16)

Closing or concealment device (2) for a construction, this device (2) comprises, on the one hand, motorized drive means (4) for driving this device (2) in movement between an open position and a closed or concealed position and, on the other hand, a plurality of portions (3; 3 '), which are articulated in pairs, including a final portion (3), which is intended to be positioned at the less near a threshold of an opening of a construction equipped with such a device (2), and which comprises at least one cavity (31) which comprises, internally, at least part of the motorized drive means ( 4), characterized in that it comprises, on the one hand, a detection system (5) for detecting an obstacle on the path of this device (2) and, on the other hand, control means (6 ) to control the stopping of the drive of the device (2) by the motorized drive means (4), this in the event of detection of such an obstacle by the detection system (5). Closure or concealment device (2) according to claim 1, characterized in that the motorized drive means (4) comprise, on the one hand, a motor (40) which is located inside the cavity (31), on the other hand, a transmission shaft (41), which in engagement with the motor (40), which has an internal part (410) extending inside this cavity (31) thus that an external part (411) extending outside this cavity (31) and, on the other hand, at least one toothed wheel (43), which extends outside this cavity ( 31), and which is integral in rotation with the transmission shaft (41). Closure or concealment device (2) according to any one of the preceding claims, characterized in that the cavity (31) of the final portion (3) also includes and internally at least part of the detection system (5). Closure or concealment device (2) according to any one of the preceding claims, characterized in that the detection system (5) comprises, on the one hand, a locking means (50) which is movable between a inactive blocking position and an active blocking position, on the other hand, at least one additional blocking means (51) which is configured to cooperate with the motorized drive means (4) as well as with the blocking means ( 50), this in the active locking position of this locking means (50) and, on the other hand, an actuating means (52) which is configured to actuate the movement of the locking means (50) from the position inactive blocking in the active blocking position, this in case of contact of such an actuating means (52) with an obstacle. Closure or concealment device (2) according to claim 4, characterized in that it comprises an elastic member (6), which is fixedly secured to the final portion (3), which comprises the locking means ( 50), and which cooperates with the actuating means (52), this in order to actuate the movement of the locking means (50) and / or of this actuating means (52). Closure or concealment device (2) according to claim 5, characterized in that the elastic member (6) consists of an elastic rod (60) which comprises, on the one hand, a fixed end (61) which is fixedly secured to the final portion (3), on the other hand, a free end (62) which cooperates with the actuating means (52) and, on the other hand, an intermediate part (63), which extends between the fixed end (61) and the free end (62), and which comprises the locking means (50). Closure or concealment device (2) according to any one of Claims 4 to 6, characterized in that it comprises an element (7) which comprises, on the one hand, said at least one additional locking means (51) and, on the other hand, at least one reception means (70) configured to receive part of the motorized drive means (4). Closure or concealment device (2) according to any one of Claims 4 to 7, characterized in that the said at least one additional locking means (51) is each constituted by a notch (510) and / or by a tooth. Closure or concealment device (2) according to claims 2, 5 or 7, characterized in that the device comprises a support (8), which is fixedly integral with the final portion (3), and which comprises means receiving the elastic member (6) and / or means for receiving the element (7) and / or means for receiving the drive shaft (41). Closure or concealment device (2) according to any one of the preceding claims, characterized in that the detection system (5) comprises an analysis means for analyzing the speed and / or the torque of an engine (40) that comprise the motorized drive means (4). Closure or concealment device (2) according to any one of the preceding claims, characterized in that it comprises, on the one hand, a feeler bar (9) which comprises the detection system (5) and, on the other hand, displacement mounting means (10) of this feeler bar (9) relative to the final portion (3), more particularly on this final portion (3). Closure or concealment device (2) according to any one of the preceding claims, characterized in that it consists of a sectional garage door leaf which has a plurality of sections, which are hinged in pairs, and which each constitute one of the portions (3; 3 ') of the closure device (2). Closure or concealment device (2) according to any one of Claims 1 to 11, characterized in that it consists of a roller shutter curtain which comprises a plurality of blades, which are articulated in pairs, and which each constitute one of the portions (3; 3 ') of the concealment device (2). Closure or concealment device (2) according to claim 13, characterized in that it comprises articulation means (30), which connect in pairs the articulated portions (3; 3 ') of this device ( 2), and which are configured to allow a stacking of at least part of the portions 3; 3 ') of this device (2). Closure or concealment installation (1) for a construction, this installation (1) comprises a closure or concealment device (2) according to any one of the preceding claims. Closing or concealment installation (1) for a construction, this installation (1) comprises, on the one hand, a closure or concealment device (2) according to claim 2 and, on the other hand, the at least one rack (11), which is intended to be fixedly secured to the masonry of the construction, and which cooperates with said at least one toothed wheel (43) of the closure or concealment device (2).

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