FR2811705A1 - ROLLER SHUTTER COMPRISING MEANS FOR LOCKING THE WINDING SHAFT OF ITS APRON - Google Patents

Abstract

The present invention relates to a rolling shutter comprising a winding shaft (2) on which is wound and from which unwinds an apron (11) connected, directly or by means of a connecting member. (17), said winding shaft (2), the latter (2) being kept in rotation at its ends by support bearings and actuated by means of a drive device. This roller shutter is characterized by the fact that it is completed by means (21) capable of ensuring the locking in rotation of said winding shaft (2) in the direction of unwinding and at the end of the travel. deployment of the apron (11), such locking means (21) being designed capable, on the one hand, of being kept in an inactive position and, on the other hand and on the contrary, of adopting an active position of locking said winding shaft (2), this under the impulse, either of the blades of said apron (11), or of a control member (22).

Description

1 2811705

  The present invention relates to a roller shutter comprising a winding shaft on which is wound and from which takes place an apron, defined by a succession of blades, and connected, directly or through a member of connection, to said winding shaft, the latter being kept in rotation at its ends by support bearings and actuated by

  through a training device.

  This invention relates to the field of manufacturing roller shutters, in particular those intended to equip the door, the

window or other of a building.

  We already know a certain number of aspects

  wheels corresponding to the description above and comprising a

  winding shaft on which is wound and from which unrolls an apron defined by a succession of blades, this under the impulse of an appropriate drive device which, according to the

  case, can be electric or manual.

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

engine load measurement.

  This training device is designed capable of allowing,

  on the other hand, the course of said deck.

  In this regard, it will be observed that, in the rolling shutters of the state of the art comprising a winding shaft actuated by a drive device of the manual type, there is, generally, no means capable of blocking in rotation said winding shaft, this at the end of deployment stroke of said

apron.

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  As a result, when the deck is fully extended, it is still still possible to rotate the winding shaft. There is, then, a reverse winding of the deck on said shaft which generally leads to a breakage of said deck and / or a blockage of the latter inside the box. When the drive device is of the motorized type, said roller shutter can be equipped with an automatic device for locking the apron at the end of its deployment stroke. The motorization system is then designed capable, on the one hand, of detecting, at the end of the deployment stroke of said apron, a variation and / or an increase in the engine load due to the blocking of the apron and, on the other hand hand, to cut off the supply of said motor. In this regard, it will be observed that this locking device is designed capable of exerting pressure on said apron so that it is in no way compatible with an apron constituted by a

  succession of flexible and / or deformable blades.

  Roller shutters are also known comprising an apron, connected to the winding shaft by means of a strap or the like, but devoid of any locking device. Such an embodiment in no way makes it possible to detect a variation in the load of the motor, the latter then being capable, after complete deployment of said apron, of ensuring the winding of the latter in the opposite direction with the drawbacks

mentioned above.

  It is also known to associate with said motor an end of stroke cage capable of detecting an end of travel of the bulkhead to cut off the supply of said motor. Such an embodiment requires a particularly tedious learning and adjustment phase when setting up the roller shutter on site, not to mention that in use it is necessary, periodically and frequently, to carry out an adjustment. The present invention is intended to overcome the

  disadvantages of the state of the art roller shutters.

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  To this end, said invention relates to a rolling shutter comprising a winding shaft on which is wound and from which takes place an apron, defined by a succession of blades, and connected, directly or through a member connecting, to said winding shaft, the latter being kept in rotation at its ends by support bearings and actuated by means of a drive device, characterized in that said rolling shutter is completed by suitable means ensuring the locking in rotation of said winding shaft in the direction of unwinding and at the end of the deck deployment stroke, such blocking means being designed, on the one hand, to be maintained in an inactive position and, d on the other hand and on the contrary, to adopt an active position for blocking said winding shaft, this under the impulse, that is to say blades of said deck,

either of a control member.

  According to another characteristic of the present invention, said control member is defined by a connecting member taking the form of a flexible strip, a strap, a metal blade or the like and comprising, on the one hand, a first end connected to said winding shaft on which is able to wind said connecting member and, on the other hand, a second end connected to said deck, in particular at a first blade fitted to the latter. An additional characteristic concerns the fact that the locking means are defined by a latch associated, as the case may be, with said winding shaft or with at least one of the support bearings of the latter, said latch being able to cooperate with means forming a keeper that comprises, respectively, either at least one

  said support bearings, or said winding shaft.

  Another characteristic consists in that the keeper means are defined by a crown, preferably coaxial with the winding shaft, and at the level of which is defined at least one stop capable of cooperating with said latch, this in the

  direction of unfolding and end of deployment of the deck.

  According to another characteristic of the present invention, said latch is subjected to elastic return means capable of

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  push back into an active position for blocking the winding shaft, in which said latch is in cooperation with

said striker means.

  An additional characteristic relates to the fact that said latch is completed by control means associated with the latter and provided capable of cooperating with the apron or said control member to bring said latch into the inactive position against the apron winding phase. the action of the elastic return means. Another characteristic consists in that said latch is defined by a lever articulated around an axis substantially parallel to the axis of the winding shaft, this lever comprising a first arm provided, in particular at its end, with attachment means capable of cooperating with the keeper means in

  active position for locking the winding shaft.

  According to another characteristic of the present invention, said lever comprises a second arm, in particular situated in the extension of the first arm, and defining said control means intended

  returning said latch to the inactive position.

  An additional characteristic relates to the fact that said lever is made integral with said winding shaft and is able to cooperate with means forming a striker consisting of at least one stopper that comprises a crown defined at the level of one at

less of said support bearings.

  According to another characteristic of the present invention, said latch is defined by an elastic blade extending in a direction substantially parallel to the axis of the winding shaft and having a free end intended to cooperate with said

striker means.

  An additional characteristic relates to the fact that said elastic blade is made integral with said winding shaft, in particular at one of the end portions of the latter, while the free end of this blade extends in the direction of said means form keeper, defined at at least one of said support bearings, and with which this free end

  cooperates in the active position for blocking the winding shaft.

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  Another characteristic consists in that said elastic blade comprises control means constituted by a control finger, in particular defined by deformation of said elastic blade, extending radially with respect to said winding shaft and capable of cooperating with said deck or said control member. According to another characteristic of the present invention, said elastic blade is mounted inside said winding shaft, the latter comprising an orifice through which is adapted to extend said control finger in order to cooperate with

  said deck or said control member.

  An additional characteristic relates to the fact that the free end of said elastic blade is equipped with a shoe comprising, on the one hand, a first portion constituting control means defined by a control button able to cooperate with said apron or said member control and, on the other hand, a second portion able to cooperate with said striker means,

  in the active position for locking the winding shaft.

  Another characteristic consists in that the second portion of this shoe takes the form of at least one tooth capable of cooperating with at least one recess constituting said means forming a keeper and

  provided at at least one of the support bearings.

  According to another characteristic of the present invention, the tooth that the shoe comprises has asymmetrical sides in order to facilitate, on the one hand, the support taking of this tooth on the walls of the recess in the active position of blocking of the winding shaft and, on the other hand, the sliding of this tooth out of this obviously, this in the direction of winding of the apron, in particular before the latch reaches an inactive position under

  the impulse of the blades of the deck or of said control member.

  Another characteristic is that said striker means are defined at the level of a fixed part of the drive device, in particular of the motorized type, of the winding shaft. According to another characteristic, said latch is defined by a blade made integral with said rolling shutter by means of attachment, said blade extending in a direction

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  substantially parallel to the axis of the winding shaft and having a longitudinal edge, on the one hand, provided with a chamfer and, on the other hand, through which this blade cooperates with said striker means, this in the direction of development and end of deployment of said deck. An additional feature is that said means for securing the blade are designed capable of ensuring a reversible mounting of the latter in order to allow appropriate positioning of the chamfer of this blade relative to the

striker means.

  Another characteristic relates to the fact that the securing means comprise a pivot allowing a 180 pivoting of said blade, this along an axis perpendicular to the axis of said

winding shaft.

  According to an additional characteristic, the securing means are, on the one hand, designed capable of allowing axial movement of said blade along its pivot axis and, on the other hand, associated with elastic return means capable of pushing said blade, axially and along its pivot axis, in an active position for blocking the winding shaft in which said blade is in cooperation with said striker means. Another characteristic consists in that said blade comprises means for controlling its pivoting defined by a control finger, associated with said blade, and capable of cooperating with the deck or with said control member to bring back and maintain said blade in position. inactive against the action of the recall means. In fact, said blade cooperates with means forming a strike defined by at least one stopper that comprises at least one of said bearings, this blade being made integral, by means of said means of securing, as the case may be, of said winding shaft or a movable part which comprises said

  drive device for the latter.

  An additional characteristic relates to the fact that at least one of said support bearings is constituted by a device

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  The drive, in particular of the motorized type, comprising a fixed part at the level of which said striker means are defined. The advantages of the present invention consist in that the blocking means are designed capable of ensuring, automatically, the blocking of the winding shaft at the end of the deck's deployment stroke. Therefore, when the deck is fully extended, the winding shaft is immobilized in rotation and cannot be moved when an action is exerted on the drive device, this in the direction of unwinding.

of the apron.

  It will be observed that such locking means are, again, designed capable of releasing said winding shaft when, in the fully deployed position of said deck, an action is exerted on said winding shaft through said driving device, this

  in the direction of winding of said deck.

  It will be noted that the locking means are defined, on the one hand, by a latch and, on the other hand, by means forming a striker and able to cooperate with said latch. The latter as well as said striker means are associated, as the case may be and directly, with said winding shaft or with at least one of the support bearings of the latter. Such blocking means are designed capable of being activated by the apron itself or by a control member, in particular defined by a strap or the like connecting the apron to

the winding shaft.

  It follows, on the one hand, that these blocking means are independent of the nature of the drive device and can, in a particularly advantageous manner, equip a rolling shutter whose drive device is, indifferently, of the type

manual or motorized.

  On the other hand, the fact that said blocking means act directly on said winding shaft makes it possible to envisage the application of these means to any type of deck, whether the latter is equipped with a device automatic locking or not, whether this deck consists of a succession of blades

  rigid or flexible, or even by a blind or the like.

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  According to another advantage, the use of a latch in the form of a reversible blade makes it possible to have blocking means able to equip a rolling shutter provided with a drive device, in particular motorized, of reversible type and suitable for cooperate with a winding shaft at any one of its ends,

  especially depending on mounting constraints or other.

  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 i is a diagrammatic, partial, perspective and partial sectional view of a rolling shutter comprising a winding shaft on which is wound, at least in part, an apron ; - Figures 2 and 3 are schematic side views, corresponding to a detail of the roller shutter shown in Figure 1 and receiving locking means, respectively in the inactive and active position, and comprising an articulated lever; - Figure 4 is a schematic view, in elevation and in longitudinal section along the winding shaft, corresponding to an embodiment for which the locking means comprise an elastic blade; - Figure 5 is a schematic view, in elevation and in longitudinal section along the winding shaft, corresponding to another embodiment using an elastic blade disposed inside said winding shaft; Figure 6 is a schematic view, in section and from the side, corresponding to a section along VI-VI of the winding shaft and keeper means shown in Figure 5; - Figure 7 is a schematic view, in elevation and in longitudinal section along the winding shaft, corresponding to a

  third embodiment using an elastic blade.

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  - Figure 8 is a schematic, partial view in section and from the side, corresponding to a section along VIII-VIII of the means forming a keeper shown in Figure 7; - Figure 9 is a schematic view corresponding to a detail of Figure 8 and relating to locking means of the winding shaft; - Figure 10 is a schematic view, in perspective and partial corresponding to an embodiment in which the locking means are, in part, defined by a reversible latch; - Figure 11 is a schematic view, in longitudinal section, and partial of a roller shutter, comprising a reversible latch illustrated in Figure 10, and shown in the direction of the unwinding of the deck and in the end position of deployment of the latter ; - Figures 12 and 13 are block diagrams of a detail corresponding to a reversible latch illustrated in Figures 10 and 11 cooperating with means forming a strike, said latch being oriented in one direction and in the other, to take account of the direction of

  unwinding of the winding shaft.

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

analog of a building.

  As visible in FIG. 1, such a rolling shutter 1 comprises a winding shaft 2 mounted in rotation relative to a part

fixed of said rolling shutter 1.

  This winding shaft 2 has, on either side, an end 3, 3 ′ at which it cooperates with a support bearing 4 intended to keep said winding shaft 2 in rotation. The latter is completed by a drive device 5, in particular associated with at least one of said support bearings 4, and suitable

  to ensure the rotation of said winding shaft 2.

  In this regard, it will be observed that such a drive device 5 can, for example, be of the manual type and adopt a known form.

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  in the state of the art, in particular that of a pulley actuated by a

cord or whatever.

  Said drive device 5 can also be of the motorized type and include a motor 6 as visible, more particularly, in FIGS. 1 to 3. In these same figures, it will be observed that such a motor 6 can, according to one non-limiting embodiment, be of tubular type and comprise, on the one hand, a stator 7 associated with a fixed part of the rolling shutter 1, in particular through a base 8 and, on the other hand, a rotor 9 capable of drive in rotation the winding shaft 2 and made integral with the latter, said rotor 9 being defined,

  in particular, by a tube 10 engaged in said winding shaft 2.

  The roller shutter i also comprises an apron 11, defined by a succession of blades 12, and connected to said winding shaft 2 on which is wound and from which unfolds said apron 11,

  this under the impulse of said drive device 5.

  This apron 11 has two ends 13, 14 one of which 13 is constituted by a final blade 15 which, at the end of the deployment stroke of said apron 11, usually comes into abutment, for example, against the shelf of a door , window or other equipped with

roller shutter 1 according to the invention.

  The other end 14 of this deck 11 is constituted by a first blade 16 connected, directly or through

  link member 17, said winding shaft 2.

  In this regard, it will be observed that such a connecting member 17 adopts, for example, the form of a flexible strip 18 (Figures 2 and 3), a strap, a metal blade or the like. Such a connecting member 17 comprises, on the one hand, a first end 19 connected to said winding shaft 2 on which is able to wind this connecting member 17. The latter 17 comprises, on the other hand, a second end 20 connected, for its part, to said deck 11,

  in particular at the level of said first blade 16 equipping the latter.

  According to the invention, this rolling shutter i is completed by means 21 capable of ensuring the rotation blocking of said shaft

  winding 2 in the direction of deployment of the deck 11.

  il 2811705 Such blocking means 21 are designed capable, on the one hand, of being maintained in an inactive position and, on the other hand and on the contrary, of adopting an active position of blocking of said winding shaft 2, this under the impulse, either of the blades 12 of the deck 11, or of a control member 22. It should be observed that, according to a preferred but nonlimiting embodiment, such a control member 22 may be constituted by a member link 17 as described above and defined, for example, by a flexible band 18, a strap, a blade

metallic or other.

  Another characteristic of the present invention consists in that the locking means 21 are defined, on the one hand, by a latch 23 associated, as the case may be, with said winding shaft 2 or with

  at least one of the support bearings 4 of the latter 2.

  Said locking means 21 are defined, on the other hand, by means 24 forming a striker which comprises, respectively, either at least one of said support bearings 4, or said winding shaft 2. In this regard, it will be observed that such means 24 forming a keeper are designed capable of cooperating with said latch 23 in order to block the rotation of said winding shaft 2, this in the active position of said blocking means 21. Such cooperation is ensured at the end of the deployment stroke of the apron 11 and in the

direction of progress of the latter.

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

drive device 5.

  It will be observed that said blocking means 21 are designed to interrupt such cooperation, more particularly, in the winding phase of said deck 11 and from a position in

  which said deck 11 is at the end of the deployment stroke.

  An additional characteristic of the present invention consists in that said means 24 forming a keeper are defined by a ring 25, preferably coaxial with the winding shaft 2

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  and at the level of which at least one stopper 26 is defined capable of cooperating with said latch 23, this in the direction of

  unfolding and at the end of the apron deployment stroke 11.

  As visible in the figures of the appended drawings, said ring 25 preferably comprises a plurality of stops 26 arranged, in particular at regular intervals, on the periphery of

said crown 25.

  Such an embodiment makes it possible to avoid long and tedious operations for adjusting the cooperation position.

  between the means 24 forming a keeper and said latch 23.

  According to another characteristic, said latch 23 is subjected to elastic return means 27 capable of pushing this latch 23 back into an active position of the means 21 for blocking the winding shaft 2. In this position, said latch 23 cooperates with

said means 24 forming a keeper.

  This latch 23 is, moreover, supplemented by control means 28 associated with said latch 23 and provided capable of cooperating, as the case may be, with the deck 11 or with the control member 22. Such cooperation is intended to bring said said latch 23 in an inactive position of the locking means 21 of the winding shaft 2. In this position said latch 23 no longer cooperates with the means 24 forming a striker so that said winding shaft 2 is, then, susceptible to '' be rotated through said

drive device 5.

  In this regard, it will be observed that the cooperation between said control means 28 and the deck 11 or the control member 22 operates against the action of the elastic return means 27, this in the winding phase of said deck 11, especially from the

  position in which the latter 11 is fully deployed.

  There is shown in Figures 1 to 3 a first embodiment of the present invention corresponding to a latch 23 defined by a lever 29 articulated around an axis 30 substantially

  parallel to the axis 31 of rotation of the winding shaft 2.

  As shown in Figures 2 and 3, this lever 29 comprises a first arm 32 provided, in particular at its end 33, with hooking means 34. Such hooking means 34 are

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  designed capable of cooperating with the means 24 forming a keeper, this in the blocking position of said winding shaft 2 by the means of

blocking 21 as shown in figure 3.

  Such a lever 29 also comprises a second arm 35, in particular situated in the extension of the first bar 32, and defining said control means 28 intended to bring said said

latch 23 in the inactive position.

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

  provided with said means 24 forming a keeper.

  However and according to a preferred embodiment, said latch 23 is made integral with said winding shaft 2, in particular at one of the ends 3, 3 'of the latter as visible

Figures 2 and 3.

  In these same figures, it will be noted that the means 24 forming a keeper are defined by at least one stopper 26 which comprises a ring 25 defined at at least one of said bearings

  support 4 of winding shaft 2.

  In this regard, it will be observed that, according to a preferred embodiment of the present invention, the support bearing 4, comprising the means 24 forming a keeper, is constituted by a part

  fixed of the drive device 5 of the winding shaft 2.

  As shown in Figures 1 to 3, the roller shutter 1 according to the invention can, advantageously but not limited to, present a drive device 5 of motorized type comprising

a motor 6, in particular an electric motor.

  In this case, the crown 25 of the means 24 forming a keeper is constituted by a fixed part of this motor 6, more particularly

  by the stator 7 and / or the base 8 of the latter 6. It has been shown in Figures 4 to 9 of the embodiments of the present

  invention for which said latch 23 is defined by an elastic blade 36 extending in a direction substantially

  parallel to the axis 31 of rotation of said winding shaft 2.

  Such an elastic blade 36 has a free end 37 at which said blade 36 is intended to cooperate with

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  said means 24 forming a keeper, this in an active position of the

  means 21 for locking the winding shaft 2.

  According to a preferred embodiment, said elastic blade 36 is made integral with said winding shaft 2, in particular at one of the end portions of the latter 2. The free end 37 of this blade 36 s' then extends in the direction of said keeper means 24, defined at at least one of said support bearings 4, and with which said free end 37 cooperates in the active position for blocking the shaft

winding 2.

  It should be observed that the elastic nature of said blade 36 makes it possible to design the latter so that it comprises, in itself, elastic return means 27 capable of pushing it back into said active shaft locking position.

winding 2.

  Such an elastic blade 36 also comprises control means 28 which, as described above, are provided capable of cooperating, as the case may be, with the deck 11 or with the control member 22, this in order to bring said said back latch 23 in one position

  inactive locking means 21 of the winding shaft 2.

  FIGS. 4 to 6 show embodiments in which said control means 28 consist of a control finger 38 extending radially by

  report to said winding shaft 2.

  Such a control finger 38 is defined, in particular, by deformation of said blade 36 and is designed capable of cooperating, as the case may be, with the deck 11 (FIG. 4) or with the control member 22

(figure 5).

  In this regard, there is shown in Figure 4, on the one hand, in solid lines and, on the other hand, in broken lines, an elastic blade 36 whose control finger 38 is adapted to cooperate, for example, with the blades 12 of an apron 11, this, respectively, in the end position of deployment of said apron 11 and in

  winding and / or unwinding phase thereof 11.

  In FIG. 5, a winding shaft 2 is illustrated in the end position of deployment of the deck 11, said shaft

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  winding 2 being defined by a tube 39 on which is wound and

  from which said apron 11 takes place.

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

  with said apron 11 or the control member 22.

  In this regard, it will be noted that, according to a preferred embodiment, said apron 11 is connected to said winding shaft 2 by means of a connecting member 17 capable of constituting said control member 22 with which said finger cooperates. of

command 38.

  FIG. 6 shows means 24 forming a keeper and taking the form of a crown 25 comprising, on its internal edge, at least one radial projection 41 capable of defining a stop stop 26. This radial projection 41 adopts, by example, a triangular shape with asymmetrical sides or can be in the form

a hanging hook or the like.

  It will be observed, in this same figure, that the elastic blade 36 has, according to a particular but not limiting embodiment, a round section. Such an elastic blade 36 can

still be of the plane type.

  In Figures 7 to 9 there is shown an elastic blade 36 according to another embodiment and whose free end 37 is equipped with a shoe 42 comprising, on the one hand, a first portion 43 constituting control means 28 defined by a control button 44 able to cooperate with said apron 11 or, according to the preferred embodiment visible in FIG. 7, with said

  control member 22, again defined by a connecting member 17.

  This shoe 42 comprises, on the other hand, a second portion 45 capable of cooperating with said means 24 forming a keeper, this in the blocking position of the winding shaft 2 and end of deployment stroke

of said apron 11.

  In this regard, there is shown in Figure 8 a schematic and partial view of such cooperation. In this figure, it will be observed that the second portion 45 of this shoe 42 takes the form of at least

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  a tooth 46 capable of cooperating with means 24 forming a keeper and defined by at least one recess 47 which comprises, on its internal edge, a crown 25 formed at the level of at least one of the

support bearings 4.

  As visible in FIG. 9 corresponding to a detail in FIG. 8, the tooth 46 of the second portion 45 of the shoe 42 has asymmetrical faces 48. Such an embodiment facilitates, on the one hand, the support of this tooth 46 on the walls of the recess 47 in the active position for blocking the winding shaft 2 and, on the other hand, the sliding of this tooth 46 out of this obviously 47, this in the direction of winding of the apron 11, in particular before the latch 23 reaches an inactive position under the impulse of the blades

  12 of the deck 11 or of said control member 22.

  It should be observed that, when said latch 23 is defined by an elastic blade 36 made integral with said winding shaft 2, the means 24 forming a keeper are defined at at least one of said support bearings 4. In a similar case, said means 24 forming a keeper, can advantageously be constituted by a fixed part of the drive device 5, in particular of motorized type, of the winding shaft 2. Thus, said means 24 forming a keeper can be located at level of base 8 and / or

of stator 7 of motor 6.

  FIGS. 10 to 13 show another embodiment of said blocking means 21, again defined by a latch 23 associated, as the case may be, with said winding shaft 2 or with

  at least one of the support bearings 4 of the latter 2.

  These blocking means 21 are further defined by means 24 forming a striker which comprises, respectively, either at least one

  said support bearings 4, ie said winding shaft 2.

  Such striker means 24 can take the form of a

  crown 25 having the characteristics described above.

  In fact, such a latch 23 is defined by a blade 49 made integral with said rolling shutter 1 by means of securing means 50. This blade 49 extends in a direction substantially parallel to the axis 31 of the shaft d winding 2 and has a longitudinal edge 51, on the one hand, oriented in the direction

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  means 24 forming a keeper and, on the other hand, capable of cooperating with the latter 24 in the direction of unwinding and at the end of the travel

deployment of said deck 11.

  It will be observed that this blade 49 comprises, at this longitudinal edge 51, a chamfer 52 designed capable of facilitating the release of said blade 49 from the means 24 forming a keeper, this in the direction of winding of said deck 11, from the end-of-travel position of the latter 11. In this regard, it will be observed that, for locking in rotation of said winding shaft 2 in the unwinding direction and at the end of deployment run of the deck 11, said blade 49 comes cooperate with the means 24 forming a keeper this at its longitudinal edge 51 and on the side opposite the chamfer

52 (Figures 12 and 13).

  According to another characteristic of this embodiment, the means 50 for securing the blade 49 are designed capable of ensuring a reversible mounting of the latter 49, this in order to allow appropriate positioning of the chamfer 52 of this blade

  49 relative to the means 24 forming a keeper.

  In fact, such fastening means 50 advantageously make it possible to modify the position of said blade 49 so as to adapt to the direction of unwinding D of the shaft.

  winding 2 as shown in Figures 12 and 13.

  According to a preferred embodiment, such fastening means 50 comprise a pivot 53 allowing a pivoting of said blade 49 by 180, this along an axis 54 perpendicular to the axis

31 of said winding shaft 2.

  Said pivot 53 then makes it possible to turn over this blade 49 to pass from a position shown in FIG. 12 to a

  position shown in Figure 13, and vice versa.

  Another characteristic of the present invention consists in that the means 50 for securing said blade 49 are designed capable of allowing axial movement of this blade 49 relative to the rolling shutter 1, this along the axis 54 of pivoting of the latter. ci 49. In addition, the blade 49, defining said latch 23, is subjected to elastic return means 27 capable of repelling it in a

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  active position for locking the winding shaft 2 in which

  this blade 49 is in cooperation with the means 24 forming a keeper.

  In fact and as visible in FIGS. 10 and 11, such elastic return means 27 are associated with the means 50 for securing the blade 49 to said rolling shutter 1 and are capable of ensuring the repulsion of this blade 49 in the direction of said means. 24 forming a keeper, this through an axial displacement of this

  blade 49 along its pivot axis 54.

  It will be observed that such return means 27 can, there

  still, be defined by a return spring.

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

previously mentioned.

  In this regard, it will be observed that such cooperation makes it possible, on the one hand, to maintain said blade 49 in the inactive position against the action of the return means 27, this in the winding and unwinding phase of the deck 11, in outside the end position

of the latter 11.

  This cooperation allows, on the other hand, to bring said blade 49 into an inactive position against the action of the return means 27, this in the winding phase of said deck and from the

  end position of the latter 11.

  According to another characteristic of the blade 49 defining said latch 23, the latter comprises means capable of controlling its pivoting. In fact, such means for controlling the pivoting are defined by said control finger 38 associated with said blade 49 and able to cooperate with the deck 11 or with said control member 22 to return and maintain said blade 49 in the inactive position against

the action of the recall means 27.

  As visible in FIG. 10, said control finger 38 comprises means for receiving (in particular a groove) of a tool,

19 2811705

  in particular a screwdriver or the like, intended to ensure the

inversion of said blade 49.

  Thus, using said tool, said control finger 38 is pushed back axially along the axis 54 of pivoting of said blade 49, this against the action of the return means 27, so as to bring said blade 49 in an inactive position. We then ensure the 180 pivoting of this blade 49 around said pivot axis 54 before removing said tool which brings said blade 49 back to its active position under the impulse of said return means 27. In this regard, it should be noted that said control finger 38 must be made accessible for such an intervention. Also and as visible in FIG. 11, this control finger 38 can be installed at the level of a gap 57 defined between the support bearing

4 and the winding shaft 2.

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

solidarity 50.

  In fact and according to a first type of embodiment not shown, said blade 49 is made integral with at least one of the support bearings 4 and is able to cooperate with means 24 forming a keeper

  defined at the level of said winding shaft 2.

  In this regard, it should be observed that said winding shaft 2 is kept in rotation by support bearings 4, at least one of which can be defined by a drive device for said shaft 2. This drive device 5 comprises, on the one hand, a fixed part (in particular a stator 7 in the case of a drive device 5 of the motorized type) and, on the other hand, a mobile part (in particular a rotor 9 in the case of a drive device 5 of motorized type) able to cooperate with said shaft

  winding 2 for its rotational drive.

* It is, for example, at the fixed part of such a drive device 5, defining a support bearing 4, that said blade 49 is made integral with said roller shutter 1 and cooperates with the means 24 forming a keeper defined at said tree

winding 2.

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  However and according to another type of embodiment, said blade 49 is able to cooperate with means 24 forming a keeper defined in

  level of at least one of the support bearings 4.

  In such a type of embodiment, said blade 49 can, according to a first embodiment, be made integral with a movable part, on the one hand, which comprises said drive device 5 and, on the other hand, capable of cooperate with said winding shaft 2

for its rotational drive.

  Thus, in the case of a drive device 5 of manual type, said movable part can be defined by a drive square associated with said winding shaft 2 while in the case of a drive device 5 of motorized type, said movable part can be defined by the rotor 9 of the motor 6 in engagement

  with said winding shaft 2 for driving the latter.

  However and according to a second embodiment, said blade 49 can also be made integral with said winding shaft 2,

  preferably at its end.

  According to a particular embodiment visible in FIG. 11, this blade 49 can be made integral with a console 55 which comprises a wheel 56, on the one hand, engaged inside said winding shaft 2 defined by a tube 39 and , on the other hand, driven by said drive device 5, in particular by the part

  mobile (for example the rotor 9) of the latter.

  It should be observed that in the case of a blade 49, integral with said winding shaft 2 or with a movable part that comprises said drive device 5 for the latter 2, the control finger 38 can, here again , be made accessible by being located at a gap 57 defined between the support bearing 4 and

  winding shaft 2 (figure 11).

  However and according to another embodiment not shown corresponding to a blade 49 disposed, at least in part, inside said winding shaft 2, the latter comprises (at

  like the embodiment shown in Figure 5 and described below

  above) an orifice through which said control finger 38 is capable of extending to cooperate with said apron 11 or with

said control member 22.

21 2811705

  In fact, this blade 49, integral with said winding shaft 2 or with a movable part which comprises said drive device, cooperates with means 24 forming a keeper which comprises at least one of said bearings 4. These means 24 forming keeper are then preferably defined at the level of the fixed part of said device

  drive 5, in particular of the motorized type.

  It will be observed that, whatever the embodiment involving a latch 23 in the form of a reversible blade 49, said means 24 forming a keeper can, here again, be defined by

  a crown 25 having the above characteristics.

  In fact, such means 24 forming a keeper are preferably defined by at least one stopper 26 which comprises, according to the

  case, said winding shaft 2 or the support bearing 4.

  FIGS. 10 to 13 show embodiments corresponding to rolling shutter 1 comprising, on the one hand, a drive device 5, preferably, of the motorized type and, on the other hand, a reversible blade 49 secured to the winding shaft 2, in particular through a wheel 56, engaged in the latter 2 at its end, and receiving the means for

joining 50 of this blade 49.

  More particularly, FIGS. 12 and 13 represent block diagrams corresponding to embodiments using a motorized drive device 5 comprising for one (FIG. 12) a motor 6 of the type on the right with a direction of unwinding. D in a certain direction and for the other (FIG. 13) a motor 6 of the type on the left with a direction of unwinding D in an opposite direction. It should be observed that the embodiments using a latch 23 in the form of a reversible blade 49

have many advantages.

  Indeed, during the installation of a rolling shutter 1 at the level of a building, it is possible to install the drive device 5 on one side or the other of said winding shaft 2, this without worrying a priori about the positioning of the blade 49 knowing that the reversible nature of the latter 49 allows adjustment, a posteriori, of the orientation of this blade 49 as a function

22 2811705

  of the direction of unwinding of the deck 11 for operation

  appropriate locking means 21.

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

  the orientation of the reversible blade 49.

  It appears from the above description that the means of

  blocking 21, object of the present invention, are defined by particularly clever means and able to overcome the drawbacks encountered for rolling shutters of the prior art. Such blocking means 21 can, moreover and advantageously, equip either a rolling shutter 1 equipped with a

  drive device 5 of manual or motorized type.

  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 this to move away from the framework and the spirit of the invention.

23 2811705

Claims (25)

  1. Roller shutter (1) comprising a winding shaft (2) on which is wound and from which takes place an apron (11), defined by a succession of blades (12), and connected, directly or by the 'Intermediate of a connecting member (17), to said winding shaft (2), the latter (2) being kept in rotation at its ends (3, 3') by support bearings (4) and actuated by the 'Intermediate of a drive device (5), characterized in that said rolling shutter (1) is completed by means (21) capable of ensuring the rotation blocking of said winding shaft (2) in the direction of the unfolding and at the end of the deployment run of the bulkhead (11), such blocking means (21) being designed capable, on the one hand, of being maintained in an inactive position and, on the other hand and on the contrary, of adopt an active position for blocking said winding shaft (2), this under the impulse, or blades (12)   of said apron (11), or of a control member (22).   2. Roller shutter (1) according to claim 1, characterized in that said control member (22) is defined by a connecting member (17) taking the form of a flexible strip (18), of a strap , of a metal or other blade and comprising, on the one hand, a first end (19) connected to said winding shaft (2) on which is able to wind said connecting member (17) and, d 'secondly, a second end (20) connected to said deck (11), in particular at a first blade (16) fitted to the latter (11).   3. Roller shutter (1) according to any one of claims   1 or 2, characterized in that the locking means (21) are defined by a latch (23) associated, as the case may be, with said winding shaft (2) or with at least one of the support bearings (4 ) of the latter, said latch (23) being able to cooperate with means (24) forming a keeper which comprises, respectively, either at least one   said support bearings (4), or said winding shaft (2).   4. Roller shutter (1) according to claim 3, characterized in that the means (24) forming a keeper are defined by a 24 2811705   crown (25), preferably coaxial with the winding shaft (2), and at the level of which is defined at least one stop (26) capable of cooperating with said latch (23), this in the sense of   unfolding and at the end of the apron deployment stroke (11).   5. Roller shutter (1) according to any one of claims   3 or 4, characterized in that said latch (23) is subjected to elastic return means (27) capable of pushing it back into an active position for blocking the winding shaft (2), in which said latch (23) is in cooperation with said means (24) forming a keeper.   6. Roller shutter (1) according to claim 5, characterized in that said latch (23) is completed by control means (28) associated with the latter (23) and provided capable of cooperating with the deck (11) or said control member (22) for bringing, in the winding phase of the deck (11), said latch (23) in the inactive position against the action of the elastic return means (27).   7. Roller shutter (1) according to any one of claims   3 to 6, characterized in that said latch (23) is defined by a lever (29) articulated around an axis (30) substantially parallel to the axis (31) of the winding shaft (2) , this lever (29) comprising a first arm (32) provided, in particular at its end (33), with hooking means (34) able to cooperate with the means (24) forming a keeper in the active position for blocking the tree winding (2).   8. Roller shutter (1) according to claims 6 and 7,   characterized in that said lever (29) comprises a second arm (35), in particular situated in the extension of the first arm (32), and defining said control means (28) intended to   return said latch (23) to the inactive position.   9. Roller shutter (1) according to any one of claims   7 or 8, characterized in that said lever (29) is made integral with said winding shaft (2) and is able to cooperate with means (24) forming a keeper consisting of at least one stop (26) that includes a crown (25) defined at   at least one of said support bearings (4). 2811705   10. Roller shutter (1) according to claim 9, characterized in that said means (24) forming a keeper are defined at a fixed part of the drive device (5), in particular of   motorized type, winding shaft (2).   11. Roller shutter (1) according to any one of claims   3 to 6, characterized in that said latch (23) is defined by an elastic blade (36) extending in a direction substantially parallel to the axis (31) of the winding shaft (2) and comprising a free end (37) intended to cooperate with said means (24) forming a keeper.   12. Roller shutter (1) according to claim 11, characterized in that said elastic blade (36) is made integral with said winding shaft (2), in particular at one of the end portions of the latter , while the free end (37) of this blade (36) extends in the direction of said means (24) form a keeper, defined at the level of at least one of said support bearings (4), and with which this end free (37) cooperates in   active position for locking the winding shaft (2).   13. Roller shutter (1) according to claims 6 and 12,   characterized in that said elastic blade (36) comprises control means (28) constituted by a control finger (38), in particular defined by deformation of said elastic blade (36), extending radially with respect to said shaft winding (2) and able to cooperate with said deck (11) or said control member (22).   14. Roller shutter (1) according to claim 13, characterized in that said elastic blade (36) is mounted inside said winding shaft (2), the latter comprising an orifice (40) through which is able to extend said control finger (38) in order to cooperate with said apron (11) or said member control (22).   15. Roller shutter (1) according to claims 6 and 12,   characterized in that the free end (37) of said elastic blade (36) is equipped with a shoe (42) comprising, on the one hand, a first portion (43) constituting control means (28) defined by a control button (44) able to cooperate with said 26 2811705   apron (11) or said control member (22) and, on the other hand, a second portion (45) capable of cooperating with said means (24) forming a keeper, in the active position for blocking the shaft winding (2).   16. Roller shutter (1) according to claim 15, characterized in that the second portion (45) of this shoe (40) takes the form of at least one tooth (46) capable of cooperating with at least one recess ( 47) constituting said means (24) forming a keeper and   formed at at least one of the support bearings (4).   17. Roller shutter (1) according to claim 16, characterized in that the tooth (46) that comprises the shoe (42) has asymmetrical sides (48) in order to facilitate, on the one hand, the taking of support of this tooth (46) on the walls of the recess (47) in the active position for blocking the winding shaft (2) and, on the other hand, the sliding of this tooth (46) out of this obviously (47), this in the direction of winding of the apron (11), in particular before the latch (23) reaches an inactive position under the impulse of the   blades (12) of the deck (11) or of said control member (22).   18. Roller shutter (1) according to any one of claims   12 to 17, characterized in that said means (24) forming a keeper are defined at the level of a fixed part of the drive device (5), in particular of the motorized type, of the shaft winding (2).   19. Roller shutter (1) according to any one of claims   3 to 6, characterized in that said latch (23) is defined by a blade (49) made integral with said rolling shutter (1) by means of fastening means (50), said blade (49) extending in a direction substantially parallel to the axis (31) of the winding shaft (2) and having a longitudinal edge (51), on the one hand, provided with a chamfer (52) and, on the other hand , through which this blade (49) cooperates with said means (24) forming a keeper, this in the direction of unwinding and at the end of the race deployment of said deck (11).   20. Roller shutter (1) according to claim 19, characterized in that said means for securing (50) the blade (49) are designed capable of ensuring a reversible mounting of this 27 2811705   last (49) on said roller shutter (1) in order to allow appropriate positioning of the chamfer (52) of this blade (49) by   relative to the means (24) forming a keeper.   21. Roller shutter (1) according to any one of claims   19 or 20, characterized in that the securing means (50) comprise a pivot (53) allowing pivoting of said blade (49) by 180, this along an axis (54) perpendicular to the axis (31) of said winding shaft (2).   22. Roller shutter (1) according to claim 21, characterized in that the securing means (50) are, on the one hand, designed capable of allowing axial movement of said blade (49) along its axis (54) of pivoting and, on the other hand, associated with elastic return means (27) capable of pushing said blade (49) axially and along its pivot axis (54), in an active position for blocking the shaft winding (2) in which said   blade (49) is in cooperation with said means (24) forming a keeper.   23. Roller shutter (1) according to claim 22, characterized in that said blade (49) comprises means for controlling its pivoting defined by a control finger (38), associated with said blade (49), and capable to cooperate with the deck (11) or with said control member (22) to bring back and hold said blade   (49) in the inactive position against the action of the return means (27).   24. Roller shutter (1) according to any one of claims   19 to 23, characterized in that said blade (49) cooperates with means (24) forming a strike defined by at least one stop (26) that comprises at least one of said bearings (4), this blade (49) being made integral, by means of said securing means (50), as the case may be, of said winding shaft (2) or of a movable part which comprises said driving device (5) of the latter (2).   25. Roller shutter (1) according to claim 24, characterized in that at least one of said support bearings (4) is constituted by a drive device (5), in particular of motorized type, comprising a part fixed to the level of which are   defined said means (24) forming a keeper.