FR2822887A1 - MOTORIZED SHUTTER WITH MOTOR STOP CONTROL ON OBSTACLE - Google Patents

Abstract

The invention relates to a roller shutter comprising a motor for controlling the winding and unwinding of an apron (3) defined by blades (4) capable of moving in lateral guide slides (6), said roller shutter (1) comprising means (9) for stopping the motor in the event of an obstacle being detected on the path of the curtain (3). This rolling shutter is characterized in that the means (9) for controlling 'stop are defined, on the one hand, by a control member (10) associated with the deck (3) and capable of scrolling inside one (6) of the slides (6) and, on the other hand , by means (12), extending longitudinally in this slide (6), and capable, under the effect of a deformation caused by said control member (10), to emit and / or to modify at least one electrical signal to stop the engine.

Description

of a house.

1 2822887

  The present invention relates to a roller shutter comprising motorized drive means for controlling the winding and unwinding of an apron defined by a juxtaposition of blades whose lateral ends are capable of moving in lateral guide slides, said roller shutter comprising engine stop control means in the event of detection of a

  obstacle on the path of the deck.

  The invention relates to the field of manufacturing roller shutters, more particularly those equipped with motorized type means for driving their deck and which, therefore, require safety means capable of ensuring the protection of users. We already know buildings with openings equipped with roller shutters whose operation is

motorized.

  Such roller shutters can be controlled not only individually by acting on a control unit which is dedicated to each of them but also in a grouped manner and through a central control capable of managing

  the simultaneous operation of several roller shutters.

  To do this, it is advisable to connect said flaps to one another, or even to said central control, which can be achieved by means of specific wiring, by means of communication to

  distance of the radio type or the like or by carrier current.

  Through such an embodiment, it is possible to control the winding and / or the unwinding of the apron of several rolling shutters simultaneously, this by acting on a control member located at a control point determined from which it is not always possible to have a we on all

shutters ordered.

  Also, it is necessary to equip these roller shutters with the help of safety means making it possible to ensure that, on the one hand, at the moment when the command to set in motion, in particular for closing, of the deck and, on the other hand, when the latter is in motion, said apron does not risk injuring by jamming a

  person, including a child, located in its path.

2 2822887

  In this regard, it will be observed that there are already such safety means constituted by an obstacle detector which, when said apron encounters such an obstacle, is designed capable of interrupting the operation of the engine. drive of the winding shaft. Thus, it is known to place a coding wheel on the end of a winding shaft of the deck, such a coding wheel being, on the one hand, driven by a cable connected to the last blade of the deck and, on the other hand, associated with optical means. When this last blade comes into contact with an obstacle, said cable no longer drives said coding wheel which is detected by said optical means which act on the drive motor of said

  tree to interrupt operation.

  I1 should be observed that the cable connected to the last blade of the deck extends inside a lateral guide slide of the blades of said deck. Such an embodiment requires the installation, inside such a slide, of said cable which

  turns out, in fact, to be an uneasy operation.

  In addition, said deck blades are caused to move inside this slide at the same time as said cable, which frequently causes a certain number of malfunctions of the

roller shutter.

  Another solution consists in placing a magnet at the end of certain blades of the apron while the upper end of a guide slide of the latter receives an ILS switch. This switch is designed capable of noting, on the one hand, the appropriate course of the apron during its deployment and, on the other hand, the stop of the scrolling of this apron in the event of blockage. Thus, when it is observed that the scrolling stops said

  apron, it ensures an interruption of engine operation.

  Such an embodiment has, in fact, a certain inertia so that, when the obstacle is located near the threshold of the opening, almost the entire weight of the deck comes to rest on said obstacle before the interruption of the taper said

apron.

3 2822887

  The present invention is intended to provide a solution to the drawbacks of obstacle detectors of the prior art. To this end, the present invention relates to a roller shutter comprising motorized drive means for controlling the winding and unwinding of an apron defined by a juxtaposition of blades whose lateral ends are capable of moving in lateral slides guide, said roller shutter comprising means for controlling the stop of the motor in the event of detection of an obstacle on the path of the deck, characterized in that the stop control means are defined, on the one hand, by a control member associated with the deck and capable of running inside one of the side slides and, on the other hand, by means, extending longitudinally inside this side slide, and designed capable, under the effect of a deformation caused by said control member, to emit and / or modify at least one electrical signal capable of controlling the stopping of the engine, this in the event of dual contact t

apron with an obstacle.

  The invention also relates to a rolling shutter comprising motorized drive means for controlling the winding and unwinding of an apron defined by a juxtaposition of slats whose lateral ends are capable of moving in the lateral slides of guidance, said roller shutter comprising means for controlling the engine to stop in the event of detection of an obstacle on the path of the curtain, characterized in that the stop control means are defined, on the one hand, by a member control associated with the apron and capable of running inside one of the lateral slides and, on the other hand, by means, extending longitudinally inside this lateral slide, and designed capable, under the effect of a deformation caused by said scrolling control member, to transmit and / or to modify, periodically, at least one electrical signal, and, on the other hand, by mo yen capable of detecting the emission and / or modification of an electrical signal and

4 2822887

  order the engine to stop in the event of the apron contacting an obstacle. According to another characteristic, the means capable of transmitting and / or modifying at least one electrical signal are defined in a piezoelectric material or the like and adopt the form of a strip attached to the internal side of said lateral slide, on

  at least part of its length.

  An additional characteristic relates to the fact that said strip of piezoelectric material has either a uniform longitudinal polarization or an absence of polarization, while said control member is designed to exercise, periodically during its movement in the slides, a pressure on said tape in we of the broadcast, by the latter, from to

minus an electrical impulse.

  According to another characteristic, said control member is defined by a roller, fitted to the apron at the lateral end of one of its blades, and capable of rolling on the surface of said strip during the unraveling of the apron, said caster adopting the shape of an ellipse, an eccentric or having a portion of different radius of curvature, a flat or the like. According to an additional characteristic, the strip of piezoelectric material has, in the longitudinal direction, an alternation, preferably regular, of polarized portions and of

non-polarized portions.

  Another characteristic is that the strip of piezoelectric material has, in the longitudinal direction, an alternation, preferably regular, of portions having a

opposite polarization.

  In such a case, said control member is defined by a control finger, a roller or the like and is associated with means capable of keeping it in abutment against said strip of piezoelectric material. The invention also relates to a roller shutter comprising motorized drive means for controlling the winding and unwinding of an apron defined by a juxtaposition of blades,

2822887

  the lateral ends are capable of moving in lateral guide slides, said roller shutter comprising means for controlling the engine to be stopped in the event of detection of an obstacle on the path of the deck, characterized in that the means for stop control are defined, on the one hand, by a control member associated with the bulkhead and able to unroll inside one of the lateral slides and, on the other hand, by means, extending from longitudinally inside this lateral slide, and designed capable, under the effect of a continuous deformation caused by said scrolling control member, to transmit and / or to modify, continuously, at least one electrical signal , and, on the other hand, by means capable of measuring the electrical characteristics of this signal and of controlling the stopping of the engine in the event of said apron contacting a

obstacle.

  According to another characteristic, the means capable of transmitting and / or modifying at least one electrical signal are defined by an electrical circuit which is. either naturally closed or naturally open, this electrical circuit being designed capable, under the impulse of said control member, of opening, respectively closing to emit and / or modify such an electrical signal. An additional feature is that the electrical circuit is defined by at least two electrical conductors extending longitudinally in said lateral slide, these conductors being, on the one hand, naturally located at a distance determined from each other and, on the other hand, designed capable, under the effect of a deformation caused by said control member, to establish an electrical connection between them for, according to the

  case, close or open the electrical circuit.

  According to an additional characteristic, at least one of said conductors comprises alternating conductive portions and insulating portions for the emission and / or the modification, periodically, of at least one electrical signal under the effect of a constant deformation caused by said scrolling control member.

6 2822887

  Another characteristic consists in that said conductors have a uniform conduction while said scrolling control member is designed capable of causing, periodically, a deformation of the means in we to establish, periodically, a direct electrical connection between these conductors . Yet another characteristic relates to the fact that at least one of said conductors has an increasing resistance, in particular in a proportional manner, as a function of its length while said control member is designed capable of ensuring, constantly, a deformation of the means capable of issue and / or to

modify an electrical signal.

  An additional characteristic relates to the fact that the means capable of measuring the electrical characteristics of the transmitted and / or modified signal are defined by means of measuring the

resistance of the electrical circuit.

  Another additional characteristic relates to the fact that the means capable of measuring the electrical characteristics of the transmitted and / or modified signal are defined by measuring means.

  of an electric current passing through said electric circuit.

  According to an additional characteristic, the means capable of measuring the electrical characteristics of the electrical signal are supplemented by means capable of ensuring a comparison between the value of the measured characteristics and a determined value of these

characteristics.

  According to another characteristic, the means for detecting an electrical signal transmitted and / or modified comprise, on the one hand, means capable of counting electrical pulses and, on the other hand, means for comparing the number of pulses credited

  with a determined number of pulses.

  According to yet another characteristic, the means for detecting an electrical signal emitted and / or modified comprise, on the one hand, means capable of counting the number of modifications of an electrical signal and, on the other hand, means of comparison of the number of

  changes counted with a determined number of changes.

7 2822887

  An additional characteristic relates to the fact that the control means are supplemented by means capable of ensuring their inactivation when the final strip is located in the immediate vicinity or in contact with the threshold of a door, window or the like equipped with said roller shutter. Finally, an additional characteristic concerns the fact that the means capable of transmitting and / or modifying at least one electrical signal are connected to an alarm center for a

  peripheral protection of a building, in particular of a dwelling.

  The advantages of the present invention consist in that the stop control means comprise means capable of emitting and / or modifying at least one electrical signal, these means being permanently installed inside a lateral slide and being made integral with the latter which avoids the risks of snagging and malfunction due, for example, to a cable

unraveling in such a backstage.

  In addition, such means make it possible to react immediately to an anomaly in the running of the deck, as the case may be, by emitting an electrical signal, by modifying the periodic or continuous emission of such a signal. The detection of such a signal, its absence or its modification makes it possible to react without delay to the level

of the engine causing it to stop.

  According to a first operating principle of the invention, the coming into contact of an obstacle with the apron immediately causes the emission and / or modification of an electrical signal interpreted, at the level of the shutter, as a

engine stop command.

  Another advantage of the present invention consists in that the means for transmitting and / or modifying an electrical signal are supplemented by means for detecting such an electrical signal. These detection means include means capable of

  ensure a count of a number of electrical pulses emitted.

  This advantageously makes it possible to determine, when there is an interruption of a periodic emission of pulses and according to the number of these pulses counted, whether the deck is in the full or partial deployment position. Such a mode of

8 2822887

  realization allows, for example, to highlight the appearance of an obstacle in the path of the deck which allows an appropriate intervention at the shutter (in particular, a rise of the deck ...) and / or at associated devices (triggering of an alert and / or alarm system). Thus and according to a second operating principle of the invention, the interruption or modification of the periodicity of an electrical signal is. immediately, detected and interpreted,

  at the shutter, like an engine stop command.

  According to a third operating principle of the invention, a variation in the electrical characteristics of a signal in a manner not in accordance with what is prew in the context of the scrolling of an apron in the absence of an obstacle is immediately detected.

  and interpreted as an engine stop command.

  Other objects and advantages of the present invention

  will appear during the description which follows relating to

  to embodiments which are given only by way of examples

indicative and not limiting.

  Understanding this description will be facilitated by

  referring to the attached drawings in which: - Figure l is a schematic we, front and partial section of a roller shutter intended to equip an opening that has a building; - Figure 2 is a schematic view of a detail of the roller shutter of Figure l equipped with stop control means according to the invention; - Figure 3 is a schematic we from above of a side slide and the apron of a roller shutter equipped with stop control means according to a first operating principle; - Figure 4 corresponds to a schematic we, from the side and in section along IV-IV of the roller shutter shown in Figure 3; - Figure 5 is a view similar to Figure 4 and corresponds to stop control means comprising an electrical circuit and adapted to operate according to this first operating principle;

9 2822887

  - Figure 6 is a view similar to Figure 3 and corresponds to a roller shutter equipped with stop control means according to a second operating principle; - Figure 7 corresponds to a schematic w e, side and in section along VII-VII of the roller shutter shown in Figure 6; - Figures 8 to 10 are views similar to Figure 7 and correspond to stop control means according to different other embodiments and able to operate according to this second operating principle; - Figure 11 is a view similar to Figure 7 and corresponds to stop control means comprising an electrical circuit and adapted to operate according to a third operating principle. The present invention relates to the field of manufacture of motorized roller shutters intended to equip a door, a window or the like located at the level of an opening that a building has. The invention will find application both in the context of the renovation of a building and when the latter is equipped

origin of such roller shutters.

  In a manner known per se and as visible in FIG. 1, such a rolling shutter 1 comprises a winding archer 2 on which is wound and from which takes place an apron 3 constituted by a juxtaposition of blades 4 whose ends 5 are suitable for himself

  move in lateral slides 6, 6 '.

  In fact, among these juxtaposed blades 4 we note, on the one hand, a first blade (not shown) through which said deck 3 is made integral with said winding shaft 2, and, on the other hand, a final blade 7 constituting the free end and

distal of said apron 3.

  This roller shutter 1 is completed by means 8 of motorized type, associated with said winding artery 2, and capable of ensuring the drive of the latter 2 to carry out, as the case may be,

  the winding or unwinding of said deck 3.

  In this regard, it will be observed that, for safety reasons, it is known to supplement these motorized means 8 with suitable means 9

2822887

  controlling the stopping of the motor 8 for driving the shaft 2 in the event of an obstacle being detected in the path of this deck 3,

  especially during the development phase of the latter.

  According to the invention, these control means 9 are defined, on the one hand, by at least one control member 10 associated with the deck 3, more particularly with one of the blades 4 of the latter 3, of

preferably the final blade 7.

  As shown in Figures 3 and 6, this control member is. preferably associated with the end 5 of such a blade 4, 7 so that it is located in the internal volume 11 delimited by a lateral slide 6 inside which said control member 10 is capable of running , especially during the unfolding phase or

winding of said deck 3.

  On the other hand, such control means 9 are defined by means 12 designed able, under the effect of a deformation caused by said control member 10, to transmit and / or modify at least one electrical signal constituted , for example, by an electrical impulse. Such means 12 for transmitting and / or modifying an electrical signal extend longitudinally inside said lateral slide 6, this over at least part, but of

  preferably over the entire length of this slide 6.

  As shown in Figure 2, these means 12 are connected, preferably at the upper end 13 of said slide 6 and by means of connecting means 14 in particular

  wired type, with motorized drive means 8.

  I1 has been shown in Figures 3 to 5 of the engine stop control means 9 designed to control such a stop, this

  according to a first operating principle.

  In this regard, it should be noted that, according to this first operating principle, the means 12 are designed capable of transmitting and / or modifying an electrical signal, this so

  punctual and in the event of contact with an obstacle with said apron 3.

  Thus, in these Figures 3 to 5, there is illustrated the deck 3 of a rolling shutter 1 in the unwinding or winding phase, on the one hand and in solid lines, in the absence of obstacle and, d 'somewhere else

1 1 2822887

  and in broken lines, in the presence of an obstacle (not shown)

coming into contact with said apron 3.

  It will be observed that in the absence of an obstacle, the control member 10 is in the inactive position of the means 12 capable of emitting and / or modifying an electrical signal. In such a case, this control member 10 can be located at a certain distance from these means 12, or even be in contact with the latter without however exerting on them a force capable of causing them to deform, resulting in the '' and / or modification of a

electrical signal.

  However, when an obstacle comes into contact with said deck 3, the latter moves, laterally and in a direction D, inside the lateral slide 6 so that said control member 10 comes to cooperate with the means 12 which, under the effect of a deformation caused by this control member

  , emit and / or modify at least one electrical signal.

  Such an emiss ion and / or modification is passed on to the motorized drive means 8, in particular by means of the connecting means 14, and constitutes a command to stop the

motor 8.

  According to a first embodiment, the means 12 capable of emitting and / or modifying at least one electrical signal take the form of a strip 15 attached to the internal side 16 of the lateral slide 6, such a strip 15 extending over at least a part (preferably over the entire length) of the latter 6. Such a strip 15 is defined in a piezoelectric material or the like which, under the effect of a deformation (more particularly of overwrite), is capable of transmitting and / or

modify an electrical signal.

  In this regard, it will be observed that such a piezoelectric material can, according to a first embodiment, be designed capable of emitting at least one electrical pulse under the effect of a deformation (crushing), this without, however, 'Such an emission does not require a supply of this material with electrical energy.

12 2822887

  However, according to another embodiment, such a piezoelectric material can be designed capable of modifying an electrical signal under the effect of a deformation, while this material is supplied with electrical energy and provides, in the inactive position, means 12, an electrical signal of retention. According to a preferred embodiment of the invention, such a

  piezoelectric material consists of a piezo polymer

  electric, in particular a fluoropolymer, more particularly PVDF. This material has a thickness of between 20 and 100 µm,

  preferably around 30'um.

  It should be observed that the piezoelectric material of said strip 15 has, according to a preferred embodiment visible in FIG. 4, a uniform longitudinal polarization. However and according to another embodiment (not shown) this strip

  15 has no polarization.

  According to a second embodiment visible in FIG. 5, the means 12 capable of emitting at least one electrical pulse take the form of an electrical circuit 17 which is. either naturally

closed, or naturally open.

  This electric circuit 17 is designed capable, under the impulse of a deformation caused by said control member 10, to come open, respectively close, to emit and / or modify a

  electrical signal for engine stop control 8.

  In fact, FIG. 5 shows an electrical circuit 17 defined by at least two electrical conductors 18, 18 ′ extending longitudinally in said lateral slide 6, of

  preferably over the entire length of the latter 6.

  These conductors 18, 18 ′ are located, of course, at a determined distance from one another and are designed to be capable, under the effect of a crushing deformation) caused by said control member 10 during contact with the bulkhead 3 with an obstacle, come closer to come into contact in order to establish a direct electrical connection between them to, as appropriate, close or open the

electrical circuit 17.

  Such an embodiment requires supplying this circuit 17 with electrical energy, such a supply

13 2822887

  being, in particular, capable of being achieved through means

liaison 14.

  I1 has been shown in Figure 5 an electric circuit 17 of the naturally open type and comprising two conductors 18, 18 ', connected together by means of a resistor 19, and one of which at

  less is supplied with electrical energy.

  During a contact between the bulkhead 3 and an obstacle, the control member 10 pushes one of the conductors 18 against the other 18 'so that a direct electrical connection is established between said conductors 18, 18 'causing a short circuit (representation in broken lines). The establishment of such a short-circuit results in the modification of an electrical signal, in particular that noted at the level of the electrical circuit 17 and

  resulting from the supply of the latter 17 with electrical energy.

  1S Such modification of electrical signal constitutes an order

engine stop 8.

  It should be noted that the presence of such resistance 19 is by no means essential. Thus, upon contact with an obstacle, an electrical connection is established between the conductors 18, 18 '(one of which is supplied with electrical energy) which results in the emission of an electrical signal at the level of circuit 17. Such an emission then constitutes a command to stop the engine 8 As visible in FIG. 5, said conductors 18, 18 ′ can be disposed inside a seal 20

fitted to the side slide 6.

  As mentioned above, the issuance and / or modification of a

  electrical signal by means 12 (strip 15 of piezo material

  electric or electric circuit 17) is carried out under the impuleion

of said control member 10.

  In this regard, it will be observed that, according to a particular embodiment, such a control member 10 can be constituted by the deck 3 itself, in particular by a blade 4, 7 which the latter comprises. However and according to a preferred embodiment visible in Figures 3 to 5, such a control member 10 takes the form of a

14 2822887

  control finger 21 in the form, for example of a button, of a

nipple or the like.

  FIGS. 6 to 10 show means 9 for stopping the engine 8 designed to control such a stop according to a second operating principle. Again such control means 9 comprise, there again, a control member 10 associated with the deck 3 and capable of unraveling inside.

  one of the side slides 6, 6 '.

  These control means 9 again include means 12 capable of transmitting and / or modifying at least one electrical signal, these means 12 extending longitudinally inside this

slide 6.

  In fact, in this second operating principle, these means 12 are designed capable of emitting and / or of modifying, periodically, at least one electrical signal, this under the effect of a deformation caused by said control member 10 in scrolling in said slide 6 and as long as this scrolling is not opposed

  by the presence of an obstacle in the path of said deck 3.

  When such an obstacle appears and comes into contact with the apron 3, either the periodicity of the emission and / or modification of this electrical signal is modified, or this

  transmission and / or this periodic modification is interrupted.

  Also and according to another characteristic of the present invention, the control means 9 are supplemented by means 22 designed capable of detecting the emission and / or the modification of an electrical signal. Such detection means 22 are designed capable, on the one hand, of demonstrating, as the case may be, an alteration in the periodicity of transmission and / or modification of this signal or an absence of this periodicity, resulting from the coming into contact of the apron 3 with an obstacle and, on the other hand and in this case, to

order the engine to stop 8.

  In this regard, it will be observed that such detection means 22 are connected to the means 12 suitable for emitting and / or modifying an electrical signal, in particular by means of the connection means 14. These detection means 22 can also be

2822887

  connected to motorized entrainment means 8, or even be part

integral of these 8.

  There have been shown in FIGS. 6 to 10 different embodiments of these means 12 capable of ensuring a transmission and / or a periodic modification of at least one electrical signal, this under

  the pulse of said control member 10 in scrolling.

  Thus and as shown in FIGS. 7 to 9, these means 12 can, here again, take the form of a strip 15 attached to the internal side 16 of the lateral slide 6, such a strip 15 extending over at least part (preferably over all) of the

length of this slide 6.

  Such a strip 15 is defined in a piezoelectric material (for example a piezoelectric polymer, in particular a fluoropolymer, more particularly PVDF) or the like which, under the 1S effect of a deformation (in particular a crushing), is able to emit at least one electrical pulse and / or to modify at least one electrical signal. It should be observed that the piezoelectric material of said strip 15 may have, according to a preferred embodiment visible in FIG. 7, a uniform longitudinal polarization, in particular at the surface. However and according to another embodiment (not

  this strip 15 has no polarization.

  In such a case (uniform polarization or absence of polarization), said control member 10 is designed capable of exerting, periodically during its travel in the slide 6, pressure on said strip 15 for the purpose of transmission and / or the modification, by the latter 15 and periodically, of at

minus an electrical signal.

  Thus and according to a preferred embodiment visible in this FIG. 7, said control member 10 is defined by a wheel 23 fitted to the deck 3 at the lateral end 5 of one

  of its blades 4, preferably the final blade 7.

  This roller 23 is capable of rolling on the surface of said

  strip 15 when the apron 3 scrolls in the slide 6.

  It will be observed that said caster 23 is designed such that, through its rolling on the strip 15, this caster 23

16 2822887

  exerts, periodically (shown in broken lines in FIG. 7), on the strip 15 a pressure capable of causing, at the level of the latter 15, the emission and / or modification of at least one

electrical signal.

  To this end, said caster 23 either takes the form of an ellipse 24, an eccentric or the like, or has a portion of different radius of curvature (in particular greater), a flat or the like. FIGS. 8 and 9 show two other embodiments using a strip 15 made of a piezoelectric material. Thus, in FIG. 8, such a strip 15 has, in the longitudinal direction, an alternation, preferably regular, of portions

  polarized 25 and non-polarized portions 26.

  1S Another embodiment, shown in FIG. 9, shows a strip 15 of piezoelectric material comprising, in the longitudinal direction, an alternation, preferably regular, of portions

  having opposite polarization 27, 28.

  As visible in FIGS. 8 and 9, the means 12 capable of emitting and / or modifying an electrical signal are supplemented by a control member 10 defined by a control finger 29, a

roulette or the like.

  It should be observed that this control member 10 must constantly be kept in abutment against said strip 15 and exert on the latter a force sufficient to allow

  the emission and / or modification of an electrical signal.

  In this regard, it will be noted that, according to a first embodiment, said control member 10 is held in abutment against said strip 15 under the effect of the own weight of the deck 3 or

  of the blade 4, 7 receiving this control member 10.

  However and according to a preferred embodiment, said control member 10 is associated with means 30 capable of ensuring that it remains pressed against said strip 15 of piezoelectric material. Such means 30 can be constituted by means capable of pushing said control member 10 against said strip 15, such repulsion means being associated, as the case may be, with the slide

6 or apron 3.

  FIGS. 6 to 9 show different repulsion means 30 associated with said deck 3 and able to bear against said slide 6, in particular at the level of a wing 32

  substantially parallel to the wing 31 equipped with said strip 15 piezo

  electric. As can be seen in these same figures, such means 30 capable of repelling said control member 10 may be constituted, for example, by an elastic blade 33 (FIG. 9), a bearing heel 34 (FIG. 7), a caster 35 (Figure 8) or the like associated with said

apron 3.

  According to another embodiment of the present invention, the means 12 capable of transmitting and / or modifying, periodically, at least one electrical signal can, again, be determined by an electrical circuit 17, either naturally closed or naturally open . Such an electrical circuit 17 is designed capable, under the impulse of a control member 10, to open or close, respectively, to ensure the emission and / or modification of such

electrical signal.

  Again, such a circuit 17 can be defined by at least two electrical conductors 18, 18 'extending longitudinally in said side slide 6, preferably over the entire length.

of the latter 6.

  These conductors 18, 18 'are located, of course, at a determined distance from each other and are designed capable, under the effect of a deformation (in particular a crushing) caused by said control member 10, to come get closer to get in touch with we, as appropriate, to close or open the circuit

electric 17.

  Like the electrical circuit 17 described above, the conductors 18, 18 ′ are again supplied with electrical energy

  and can optionally be connected by a resistor.

  In fact and according to a first embodiment, the conductors 18, 18 ′ are designed capable of authorizing conduction

18 2822887

  electric over their entire length. In such a case, said control member 10 is. meanwhile, designed capable of ensuring, periodically, a deformation of the means 12 and, consequently, a direct and periodic electrical connection between these two conductors 18, 18 ′ for the purpose of transmission and / or modification, periodically, an electrical signal. It will be observed that such a control member 10 can, like the embodiment corresponding to a piezoelectric strip 15 shown in FIG. 7, take the form of a roller provided with a flat, a portion of radius of

different court or similar.

  According to another embodiment visible in FIG. 10, at least one 18 of the electrical conductors 18, 18 ′ has conductive portions 36 (charged ink, carbon, metallization, etc.) separated, in particular regularly, by insulating portions 37. In such a case, said control member 10 is designed capable of remaining in abutment against the means 12 with a view to ensuring constant deformation of the latter 12 and permanent contact between the two conductors 18, 18 ', according to the case, in the active position (representation in broken lines) or passive (representation in solid lines) of the means 12 for transmitting and / or modifying a

electrical signal.

  In such a case, said control member 10 can, here again, be in the form of a control finger, a

roulette or the like.

  It should be observed that this control member 10 is held in abutment against the electrical circuit 17, either under the effect of the own weight of the deck 3 or of the blade 4, 7 receiving this control member 10, or by the intermediate of means 30 capable of ensuring such a support support, such means 30 being, by

  example, similar to those described above.

  As mentioned above, a rolling shutter 1 equipped with means 12 capable of emitting and / or modifying, periodically, at least one electrical signal is supplemented by means 22 designed capable of

  detect the emission and / or modification of such a signal.

  According to a first embodiment, such detection means 22 comprise, on the one hand, means capable of counting down

19 2822887

  electrical pulses and, on the other hand, means capable of ensuring a comparison of the number of these pulses counted with

a specified number of pulses.

  Such an embodiment makes it possible to note the number of pulses emitted and to compare it with the number of pulses (for example determined by learning means which comprises the rolling shutter l, in particular during a learning phase) in front of

  be issued for full deployment of the deck 3.

  Another embodiment consists in that these detection means 22 comprise, on the one hand, means capable of counting the number of modifications of an electrical signal and, on the other hand, means capable of ensuring a comparison of the number of these

  changes counted with a determined number of changes.

  This makes it possible to note the number of modifications of an electrical signal and to compare it with the number of modifications (for example determined by learning means that the rolling shutter l comprises, in particular during a learning phase) to be

  raised for full deployment of the deck 3.

  By making such a comparison, these detection means 22 make it possible to demonstrate, during the interruption or alteration of an emission and / or a periodic modification of an electrical signal, a total deployment of the deck 3 or an incomplete deployment of the latter resulting from the appearance of an obstacle in the path of this deck 3. In the latter case, it may be pre w an appropriate intervention at the level of the rolling shutter l (in particular a raising of the deck 3 ...) and / or at the level of

  devices associated with this roller shutter 1.

  It will be observed that such an intervention can also be provided during the emission and / or modification of at least one electrical signal by the means 12 in the event of obstacle detection, this in the context of the first operating principle. of the shutter

  rolling l according to the invention (Figures 3 to 5).

  FIG. 11 shows engine control means 9 for stopping the engine 8 designed capable of operating according to a third principle

Operating.

2822887

  Again such control means 9 comprise, here again, means 12 capable of transmitting and / or modifying at least one electrical signal under the effect of a deformation caused by a control member.

  1O that these control means 9 comprise.

  However and according to this third operating principle, these means 12 are designed capable of transmitting and / or modifying an electrical signal continuously during the movement of said control member 10 in the slide 6, this under the impulse of a

  continuous deformation caused by this control member 10.

  It should be observed that this control member 10 must constantly be kept in abutment against the means 12, either under the effect of the own weight of the deck 3 or of the blade 4, 7 receiving this control member 10, or by means 30 suitable for

* maintain support.

  In such a case, the control means 9 are further defined by means designed capable, on the one hand, of measuring the electrical characteristics of at least one electrical signal emitted and / or modified by the means 12 and, on the other hand, to control the stopping of the motor 8 depending on whether the characteristics measured

  corresponding to the entry into contact of an obstacle with the deck 3.

  As shown in this figure 11, such means 12 are in the form of an electrical circuit 17 which is. either naturally closed or naturally open. This circuit 17 is designed capable, under the impulaion of said control member 10, to open or close, respectively, to transmit and / or modify at

minus an electrical signal.

  Again, such an electrical circuit 17 is defined by at least two conductors 18, 18 'extending longitudinally in the slide 6. Such conductors 18, 18' are, on the one hand, located, of course, at a distance determined one 18 from the other 18 'and, on the other hand, designed capable, under the effect of a deformation caused by said control member 10, to establish a direct electrical connection between them for, according to the case, close or open the circuit

electric 17.

  According to another characteristic of this electrical circuit 17, at least one 18 of the conductors 18, 18 'has a resistance

21 2822887

  electric R increasing as a function of its length, such

  resistance R being, in particular, proportional to this length.

  Such an embodiment involves a continuous variation of the resistance RC of the electric circuit 17 under the impulse of a constant deformation of the latter 17 caused by said member

  command 10 scrolling in the slide 6.

  In this regard, it should be observed that the means capable of measuring the electrical characteristics of a signal emitted and / or modified by the means 12 can, according to a first embodiment, be constituted by means intended to measure the resistance RC of the electrical circuit 17, such means being, for example, integrated or located at the level of the drive means

motorized 8.

  Such means of measuring the RC resistance are, moreover, designed capable of controlling the stopping of the motor 8 when they measure a constant RC resistance value corresponding to a stop of the running of the deck 3, more particularly when the latter 3

comes into contact with an obstacle.

  It should also be noted that these means of measuring the RC resistance can be supplemented by means capable of ensuring a comparison between the RC value of the measured resistor and a determined resistance value corresponding, for example, to that of the electrical circuit 17 in the total unwinding position of the deck 3. Thus, in the event of a measurement of a constant resistance value RC, these comparison means make it possible to highlight, as the case may be, a total or incomplete deployment of said deck 3 for, in the latter case and as mentioned above, carry out an appropriate intervention at the level of the rolling shutter 1 (in particular a raising of the curtain 3 ...) and / or at the level of the devices which are

  associated with this roller shutter 1 (alarm center, etc.).

  According to another embodiment, the measuring means are constituted by means able to measure the electric intensity

  crossing the electrical circuit 17.

  Such measurement means make it possible to detect the stop of the scrolling of the deck 3, in particular when the latter enters

22 2822887

  contact with an obstacle, this by measuring a constant intensity. In such a case, a

engine stop control 8.

  Again, these measuring means can be supplemented by means capable of ensuring a comparison between the measured intensity and a determined intensity value corresponding, for example, to that passing through the electrical circuit 17 in the unwinding position.

total of deck 3.

  Again, it is possible to highlight a total or incomplete deployment of said apron 3 to intervene appropriately at the level of the shutter 1 and / or at the level of the

devices associated with it.

  It should be observed that, according to a particular embodiment of the invention, the means 12 capable of emitting and all modifying at least one electrical signal defined by an electrical circuit 17 constituted by at least two conductors 18, 18 'of resistance Increasing R can also be used for use according to the first and / or the second principle of

  operation as described above.

  Here again, through a measurement of the resistance and / or the intensity in the event of the scrolling of the apron 3 stopping, it is possible to highlight a total or partial deployment of the apron 3 in we of a appropriate intervention on the roller shutter

  1 and / or on the associated devices.

  According to another characteristic of the invention, said rolling shutter 1 may also include means capable of ensuring the inactivation of the control means 9 when the final blade 7 is located in the immediate vicinity or in contact with the threshold 38 of a

  door, window or the like equipped with said roller shutter 1.

  Such inactivation means can be defined by said means for detecting an electrical signal and / or by said means.

  for measuring the electrical characteristics of such a signal.

  Thus, in the event of detection of a number of emissions and / or modifications of an electrical signal or in the event of measurement of an RC resistance or of an electrical intensity corresponding, for example, to the coming into contact of the final strip 7 with the threshold 38,

23 2822887

  the control means 9 are deactivated as well as the motor 8 stop control. This motor 8 continues to drive the shaft 2 and, as the case may be, the course or

winding the deck 3.

  Such inactivation means can then be supplemented by time-delay means capable, after a certain period of time (in particular capable of being programmed), of reactivating the means of

  command 9 and / or to command engine stop 8.

  Such an embodiment makes it possible to immobilize said apron 3

  in at least partially openwork position.

  According to another characteristic, the rolling shutter 1 according to the invention can be associated with an alarm center (not shown) for peripheral protection of a building,

including a home.

  These are, more particularly, the means 12 capable of transmitting and / or modifying at least one electrical signal which are connected to such an alarm center, in particular by means of the

connecting means 14.

  Such a connection makes it possible, either when transmitting and / or modifying at least one electrical signal (according to the first operating principle of the invention), or when an alteration or interruption of a periodic emission and / or modification of such a signal (according to the second operating principle of the invention), either when measuring a constant electrical characteristic (according to the third operating principle), to provoke an appropriate reaction at this alarm center or its peripherals, in particular a

  triggering of an alert and / or alarm system ...

  Although the invention has been described with reference to a particular embodiment, it is understood that it is in no way limited thereto and that it is possible to make various modifications to the forms, materials and combinations of these. various elements, without

  for that to move away from the framework and the spirit of the invention.

24 2822887

Claims (17)

  1) Roller shutter (1) comprising motorized drive means S (8) for controlling the winding and unwinding of an apron (3) defined by a juxtaposition of blades (4) whose lateral ends (5) are likely to move in lateral guide slides (6, 6 '), said roller shutter (1) comprising means (9) for stopping the motor (8) in the event of an obstacle being detected on the trajectory of the apron (3), characterized in that the stop control means (9) are defined, on the one hand, by a control member (10) associated with the apron (3) and capable of scrolling at the 'interior of one (6) of the lateral slides (6, 6') and, on the other hand, by means (12), extending longitudinally inside this lateral slide (6), and designed capable, under the effect of a deformation caused by said control member (10), to transmit and / or modify at least one electrical signal capable of controlling the stopping t of the motor (8), this in the event of said apron (3) contacting a obstacle.   2) Roller shutter (1) comprising motorized drive means (8) for the control of winding and unwinding of an apron (3) defined by a juxtaposition of blades (4) whose lateral ends (5) are capable of moving in lateral guide slides (6, 6 ′), said roller shutter (1) comprising means (9) for stopping the motor (8) in the event of an obstacle being detected on the path of the deck (3), characterized by the fact that the stop control means (9) are defined, on the one hand, by a control member (10) associated with the deck (3) and capable of scrolling at the inside of one (6) of the side slides (6, 6 ') and, on the other hand, by means (12), extending longitudinally inside this side slide (6), and designed capable, under the effect of a deformation caused by said scrolling control member (10), to transmit and / or to modify, periodically, at least one signal electric, and, on the other hand, by means capable of detecting 2822887   the emission and / or modification of an electrical signal and to control the stopping of the motor (8) in the event of contact with said bulkhead (3) with an obstacle.   3) Roller shutter (1) according to any one of   Claims 1 or 2, characterized in that the means (12)   capable of emitting and / or modifying at least one electrical signal are defined in a piezoelectric material or the like and adopt the form of a strip (15) attached to the internal side (16) of said lateral slide (6), over at least part of the length of the latter (6).   4) rolling shutter (1) according to claims 2 and 3,   characterized in that said strip (15) of piezo material   electric has either a uniform longitudinal polarization or an absence of polarization, while said control member (10) is designed capable of exerting, periodically during its travel in the slide (6), a pressure on said strip (15) in we of the show, by the latter (15),   at least one electric pulse.   ) Roller shutter (1) according to claim 4, characterized in that said control member (10) is defined by a roller (23), fitted to the deck (3) at the lateral end (5) of the 'one of its blades (4, 7), and capable of rolling on the surface of said strip (15) when the apron (3) is unraveled, said roller (23) adopting the shape of an ellipse (24), d '' an eccentric or having a portion of radius of curvature different, a flat or the like.   6) Roller shutter (1) according to claims 2 and 3,   characterized by the fact that the strip (15) of piezoelectric material has, in the longitudinal direction, an alternation, preferably regular, of polarized portions (25) and non-polarized portions polarized (26).   7) rolling shutter (1) according to claims 2 and 3,   characterized in that the strip (15) of piezoelectric material has, in the longitudinal direction, an alternation, of regular strength, of portions (27, 28) having a opposite polarization. 26 2822887   8) Roller shutter (1) according to any one of   Claims 6 or 7, characterized in that the said   control (10) is defined by a control finger (29), a roller or the like and is associated with means (30) capable of keeping it in abutment against said strip (15) of piezoelectric material. 9) Roller shutter (1) comprising motorized drive means (8) for controlling the winding and unwinding of an apron (3) defined by a juxtaposition of blades (4) whose lateral ends (5) are capable of moving in lateral guide slides (6, 6 '), said roller shutter (1) comprising means (9) for stopping the motor (8) in the event of an obstacle being detected on the path of the deck (3), characterized by the fact that the stop control means (9) are defined, on the one hand, by a control member (10) associated with the deck (3) and capable of unraveling the inside of one (6) of the side slides (6, 6 ') and, on the other hand, by means (12), extending longitudinally inside this side slide (6), and designed capable, under the effect of a continuous deformation caused by said control member (10) in distillation, to emit and / or to modify, continuously, at least one electrical signal, and, on the other hand, by means capable of measuring the electrical characteristics of this signal and of controlling the stopping   of the motor (8) in the event of said apron (3) contacting an obstacle.   ) Roller shutter (1) according to any one of   claims 1, 2 or 9, characterized in that the means   (12) capable of emitting and / or modifying at least one electrical signal are defined by an electrical circuit (17) which is. either naturally closed or naturally open, this electrical circuit (17) being designed capable, under the impulse of said control member (10), to open or close respectively   issue and / or modify such an electrical signal.   11) Roller shutter (1) according to claim 10, characterized in that the electrical circuit (17) is defined by at least two electrical conductors (18, 18 ') extending longitudinally in said lateral slide (6) , these conductors (18, 18 ') being, on the one hand, located, naturally, at a distance 2; 2822887   determined one (18) from the other (18 ') and, on the other hand, designed capable, under the effect of a deformation caused by said control member (1O), to establish an electrical connection between them for,   as appropriate, close or open the electrical circuit (17).   12) Roller shutter (1) according to claims 2 and 11,   characterized in that at least one (18) of said conductors (18, 18 ') comprises alternating conductive portions (36) and insulating portions (37) for the emission and / or modification, periodically , at least one electrical signal under the effect of a constant deformation caused by said control member (10) scrolling.   13) Roller shutter (1) according to claims 2 and 11,   characterized in that said conductors (18, 18 ') have uniform conduction while said scrolling control member (10) is designed capable of periodically causing deformation of the means (12) in order to establish , periodically, a   direct electrical connection between these conductors (18, 18 ').   14) Roller shutter (1) according to claims 9 and 11,   characterized in that at least one of said conductors (18, 18 ') has an increasing resistance (R), in particular in a proportional manner, as a function of its length while said control member (1O) is designed capable of ensuring , constantly, a deformation of the means (12) capable of emitting and / or modifying a electrical signal.   15) Roller shutter (1) according to claim 14, characterized in that the means capable of measuring the electrical characteristics of the signal transmitted and / or modified are defined by means   for measuring the resistance (RC) of the electrical circuit (17).   16) Roller shutter (1) according to claim 14, characterized in that the means capable of measuring the electrical characteristics of the signal emitted and / or modified are defined by means of measuring an electric current passing through said circuit electric (17).   17) Roller shutter (1) according to any one of   claims 15 or 16, characterized in that the means   able to measure the electrical characteristics of the signal 28 2822887   are supplemented by means capable of ensuring a comparison between the value of the measured characteristics and a   determined value of these characteristics.   18) Roller shutter (1) according to claim 2, characterized in that the means for detecting an electric signal transmitted and / or modified comprise, on the one hand, means capable of counting electric pulses and, on the other hand, means of comparing the number of counted pulses with a number of determined pulses.   19) Roller shutter tl) according to claim 2, characterized in that the means for detecting an electrical signal transmitted and / or modified comprise, on the one hand, means capable of counting the number of modifications of a signal electrical and, on the other hand, means for comparing the number of changes counted   with a specified number of modifications.   ) Roller shutter (1) according to any one of   previous claims, characterized in that the means   control (9) are supplemented by means capable of ensuring their inactivation when the final blade (7) is located in the immediate vicinity or in contact with the threshold (38) of a door, window or   similar equipped with said rolling shutter (1).   21) Roller shutter (1) according to any one of   previous claims, characterized in that the means   (12) capable of transmitting and / or modifying at least one electrical signal are connected to an alarm center for protection