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EP1488070B1 - Safety device and mechanism comprising one such device, used to manoeuvre a closing or sun protection installation - Google Patents

Safety device and mechanism comprising one such device, used to manoeuvre a closing or sun protection installation Download PDF

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Publication number
EP1488070B1
EP1488070B1 EP03727616.9A EP03727616A EP1488070B1 EP 1488070 B1 EP1488070 B1 EP 1488070B1 EP 03727616 A EP03727616 A EP 03727616A EP 1488070 B1 EP1488070 B1 EP 1488070B1
Authority
EP
European Patent Office
Prior art keywords
shaft
catch
spring
ring
braking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03727616.9A
Other languages
German (de)
French (fr)
Other versions
EP1488070A1 (en
Inventor
Christophe Bresson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Simu SAS
Original Assignee
Simu SAS
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Filing date
Publication date
Application filed by Simu SAS filed Critical Simu SAS
Publication of EP1488070A1 publication Critical patent/EP1488070A1/en
Application granted granted Critical
Publication of EP1488070B1 publication Critical patent/EP1488070B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1253—Counterbalance devices with springs with canted-coil torsion springs
    • E05D13/1269—Spring safety devices
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
    • E05F15/681—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings operated by flexible elongated pulling elements, e.g. belts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/47—Springs
    • E05Y2201/482—Ribbon springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Definitions

  • the invention relates to a safety device for a closure or sun protection system.
  • the invention also relates to a mechanism for operating such an installation.
  • Closure means doors, gates, shutters and equivalent materials.
  • a winding mechanism for operating an apron, a door, a shutter or the like.
  • Such a mechanism can be actuated mechanically, thanks to a strap or a crank, or electrically through a motor that is most often motor-brake type. It is known to compensate the torque exerted on the winding mechanism by the weight of the deck by means of one or more so-called compensation springs.
  • FR-A-2 242 010 discloses a pawl or balance which comprises a branch capable of coming into engagement with an external toothing of a wheel secured to a winding shaft of an apron.
  • This balance comprises a second branch provided with a roller which forms a counter-weight to the first, while the roller rolls on corrugations formed at the periphery of a second wheel, integral with the first.
  • Gravity tends to press the pebble onto the periphery of the second wheel, so that the first leg of the balance oscillates between an engagement position and clearance relative to the teeth of the first wheel without abutting against them, which is actually the case when the speed of wheel rotation is reduced.
  • DE-A-29 15 547 plans to replace the teeth with rods that provide both the ripple and the locking of a ratchet. This device is active to stop the rotation of a winding shaft only beyond a certain speed of this shaft.
  • Such a situation can in particular occur in the case of an installation comprising several compensation means, such as spring boxes, especially in case of rupture of one of the springs. Such a situation can also occur in the case of an installation comprising a single compensation spring, whose stiffness constant decreases with fatigue.
  • the compensation springs are oversized so that the efforts they deploy are always greater than the effect of the weight of the door lowering, otherwise the downward movement of the apron or grid by the action of the motor induces successive blockages / releases of the pawl that can, in the long run, damage the mechanism.
  • the invention more particularly intends to remedy by proposing a safety device for a closing or sun protection installation comprising an oscillating ratchet. which functions properly, including in case of failure of a compensating means, such as a spring.
  • the invention relates to a safety device for a closing or sun protection system comprising a drive mechanism of an obturation shutter of an opening, this mechanism including a fixed shaft and an element provided with a toothing adapted to cooperate with at least one oscillating pawl or with a cylindrical element oscillating during the rotational movements of the shaft and able to immobilize it in rotation.
  • This device is characterized in that it comprises means for braking or blocking the pawl or the cylindrical element in its oscillation movement during a rolling movement of the apron, these braking or locking means being controlled by means of means for detecting a rupture or failure of a spring or a torque compensation cable exerted on this shaft by the apron.
  • a failure of a compensation means such as a spring, and more particularly a rupture of such a spring, induces a braking of the oscillating pawl, which makes it possible to hold it in the locking position of the spring. element provided with a toothing.
  • a failure of a compensation means such as a spring, and more particularly a rupture of such a spring, induces a braking of the oscillating pawl, which makes it possible to hold it in the locking position of the spring. element provided with a toothing.
  • the braking means and the associated detection means make it possible to react immediately to a failure of the compensating means, before a significant variation in speed of the rotary shaft corresponding to a potentially dangerous displacement of the rotary shaft occurs.
  • shutter means The device of the invention operates, in practice, through a detection of the torque due to the compensation spring and not by the detection of a compensation deficit.
  • the device For compensated type installations, the device provides dual protection, ie low speed protection, which is the case when the failure concerns the compensation means, and at high speed, which is the case for other failures. It turns out in practice that, in compensated installations, the fall of the closure means, that is to say most of the deck, is most often the result of a failure of the compensation means. Thanks to the invention, the life of the installation is maintained since, in the most frequent case, it is not created shock during the implementation of the safety device.
  • the device of the invention is also simpler, lighter, less expensive and less cumbersome than those of the state of the art.
  • the compensation means is a spring banded around an end support of the shaft, between a fixed part relative to the support and an annular member adapted to rotate around that -cci being driven by the shaft, the pawl being pivotally mounted about a fixed axis by providing support.
  • the compensation means is a spring loaded by a weight and secured to an annular member surrounding an end support of the shaft, the pawl being pivotally mounted about an axis. fixed relative to this support.
  • the compensation means is a spring banded around a motor assembly disposed inside the shaft, the pawl being pivotally mounted about a fixed axis by relative to an end support portion of this shaft.
  • the compensation means is a spring integrated in a spring box (s) disposed inside the shaft, between the latter and a fixed shaft, the spring box (s) also comprising the pawl, the braking means and the detection means.
  • the invention also relates to a mechanism for operating a closure or sun protection system which comprises a safety device as previously described.
  • a mechanism for operating a closure or sun protection system which comprises a safety device as previously described.
  • Such a mechanism is more reliable, more compact and less expensive than those of the state of the art. It is particularly secure against a failure of a compensation spring.
  • Mechanism 1 partially represented in Figures 1 to 3 is provided for the controlled winding, around a substantially horizontal axis X-X ', an apron T to selectively close an opening O provided in a building.
  • This mechanism is intended to be supported by compared to the masonry of a building, by means of a consolation 2 possibly integrated into a tunnel box.
  • the mechanism 1 comprises a tubular shaft 3 with a circular section and whose longitudinal axis coincides with the axis X-X '.
  • the shaft 3 could have a polygonal section or another profile.
  • a support 4 fixed by any appropriate means on the console 2, is disposed inside the tube 3 and is equipped with an annular ring 5 which surrounds the support 4 being immobilized thereon in rotation and in translation.
  • the ring 5 is fixed in relation to the masonry of the building.
  • a pawl 6 is mounted on a mechanical axis 7 passing through an opening 51 of the ring 5.
  • A-A ' the geometric axis of symmetry of the shaft 7.
  • the axes X-X' and A-A ' are generally parallel.
  • the pawl 6 comprises a first branch 61 extending radially with respect to the axis A-A 'when the pawl 6 is mounted on the axis 7 and a second branch 62.
  • a ring 8 is also mounted around the support 4 and immobilized axially relative thereto by means of a circlip 81 engaged in a groove 41 of the support 4.
  • the ring 8 is integral in rotation with the shaft 3.
  • the ring 8 comprises an internal sleeve 82 defining a cylindrical surface with a circular base 83 of radius substantially equal to the outer radial surface 43 of the support 4, so that the ring 8 can rotate about the axis XX 'by sliding on the surface 43.
  • the ring 8 also comprises an outer sleeve 84 provided with holes 85 not shown to allow the rotation of the ring 8 and the shaft 3 in rotation and in translation.
  • An annular web 86 connects the sleeves 82 and 84 and is pierced with three openings 87.
  • Three ribs 88 are also provided between the sleeves 82 and 84 being perpendicular to the web 86.
  • An inclined toothing 89 is formed inside the sleeve 84. This toothing is oriented and dimensioned to cooperate, if necessary, with the branch 62 of the pawl 6.
  • a ring 9 is provided to be mounted around the sleeve 82 being held axially by a circlip 91 engaged in a groove 81 'of the ring 81.
  • the outer surface 92 of the ring 9 is generally frustoconical and stepped.
  • the surface 92 is also provided with a notch 93 for receiving and jamming a first end of a compensation spring 10, the part of which is closest to this end is wound on the surface 92.
  • the opposite end of the spring 10 is immobilized on a ring 11 of external shape also frustoconical, itself immobilized on the support 4 by means of a pin 12.
  • a motor assembly not shown which may be electrical or mechanical and disposed near the opposite end of the shaft 3, rotates the shaft 3 about the axis X-X ', as shown by the double arrow R at the figure 3 .
  • the ring 9 is provided with ribs 95 each extending in a radial direction relative to a central sleeve 96 and provided with a pin 97 for centering a compression spring 30 to be housed between a rib 95 and a rib 88 which are opposite when the ring 9 is mounted on the ring 8, as shown in FIG. figure 3 .
  • the compensation spring 10 is more or less banded between the ring 9 and the ring 11.
  • the shaft 3 rotates the ring 8 which trained by the cooperation of the ribs 88 and 95, the ring 9.
  • the tension of the spring 10 increases or decreases.
  • the pawl 6 oscillates about the axis A-A', this oscillations movement being generated by the successive contacts between the branch 62 and the teeth of the toothing 89 and the effect of the weight of the branch 61 which is heavier than the branch 62.
  • the pawl 6 or equivalent is of the non-blocking type by default. It becomes blocking under the effect of the centrifugal force, during a rapid rotation of the shaft 3 or equivalent in unfolding the deck T.
  • a ring 20 is interposed between the ring 5 and the face 86 a of the web 86 facing towards the ring 5.
  • the ring 20 is interposed between the face 86a and the pawl 6.
  • the ring 20 has inner diameter D i and Outside such that its face 21 facing the pawl 6 is generally aligned with a side face 63 of the pawl.
  • the ring 20 is able to bear against the pawl 6.
  • the ring 20 is provided with three tongues 22 sized to be engaged in the openings 87 of the ring 8 and each provided, on their face 23 facing the X-X 'axis, with a groove 24 in the form of a section of FIG. propeller.
  • the ring 9 is provided with three helical ribs 94 dimensioned and arranged such that they can be engaged in the grooves 24 of the ring 20.
  • the angle of inclination of the elements 94 and 24 with respect to the axis XX ' is such that the elements 94 and 24 play the role of nets to "screw" the ring 20 on the ring 9 in the direction represented by the arrow R 'to the figure 1 .
  • a clearance J is provided between the ring 20 and the lateral face 63 of the pawl 6.
  • the torque C 2 has a relatively low value compared to the torque C 1 .
  • the value of the stiffness constants of the springs 30 is chosen for this purpose as a function of that of the spring 10.
  • braking or blocking of the pawl 6 is obtained in the event of complete or almost complete failure of the spring 10 and not in case of momentary under-compensation due, for example, to a variation of the winding diameter of the deck, as could occur in a device operating on the basis of a compensation deficit.
  • the ring 20 then plays the role of a brake pad of the pawl 6, because its face 21 comes into contact with the side face 63 of the pawl.
  • the mechanism 101 of this embodiment is provided for the winding of an apron T and comprises a shaft 103 mounted on a ring 108, it -Even supported by a support 104 immobilized relative to a console 102 fixed relative to the masonry of a building.
  • a ring 105 is mounted at the end of the support 104 and immobilized axially by means of a circlip 151 and in rotation by cooperation of shapes.
  • the ring 105 supports a mechanical axis 107 whose A-A 'geometric axis is noted, while note X-X' the geometric axis of the tube 103 which is also its axis of rotation. Axes A-A 'and X-X' are generally parallel.
  • a ring 109 is disposed on the ring 108 and immobilized axially, with the possibility of rotation, by means of a circlip 181.
  • the ring 109 is extended axially by a sleeve 192.
  • Around this sleeve 192 is wound a cable 110 which is suspended a weight P.
  • a ring 120 is equipped with tabs 122 provided with grooves 124 for receiving ribs 194 formed on the ring 109, the cooperation of the elements 124 and 194 making it possible to exert on the ring 120 efforts F 1 and F 2 of translation parallel to the axes AA 'and X-X', which allows the ring 120 to selectively brake a pawl 106 mounted on the axis 107.
  • the force F 1 is generated by the weight P, whereas the force F 2 is generated by springs 130 interposed between ribs respectively belonging to the ring 108 and to the ring 109.
  • a failure of the weight support means P in particular a rupture of the cable 110, has the effect of rotating the ring 109 about the axis X-X '. This induces, as in the previous embodiment, a displacement of the ring 120 in the direction of the pawl 106, the ring blocking the pawl engaging in the toothing 189. As a result, the ring 108 and the tube 103 are immobilized in rotation relative to the ring 105 and the support 104.
  • a mechanism for rotating the shaft 103 may be provided at the opposite end of this shaft.
  • the mechanism 201 of this embodiment is provided for the controlled winding of an apron T about an axis XX 'which is also axis of symmetry of a shaft 203.
  • a ring 208 Around the axis XX 'are arranged a ring 208, a ring 209, a pawl 206, a ring 220 and springs 230.
  • a compensation spring 210 is banded between the ring 209 and a ring 211 also centered on the axis X-X '.
  • This embodiment differs from the previous ones in that an electric motor 275 is integrated in the support 204 of the shaft 203 and previously mentioned elements. 276 is the output shaft of the motor 275, this shaft being integral in rotation with a disk 277 driving in rotation of the shaft 203.
  • the outer housing 278 of the motor 275 has substantially the same geometry as the support 4 of the first embodiment.
  • the pawl 206 is articulated about an axis 207 fixed on a part 205 integral with the support 204.
  • This embodiment has the particular advantage that all the motorization, compensation and safety functions of the mechanism 201 are grouped together in a compact device that can be pre-assembled at the factory, before being placed inside. from one end of the shaft 203.
  • the mechanism 301 of this embodiment comprises a tube 303 of controlled winding of an apron T about an axis XX 'which is also the axis of symmetry of the tube 303.
  • a fixed shaft 304 extends inside the shaft 303 and a spring box (s) 400 is interposed between the shafts 303 and 304.
  • This spring box (s) comprises a compensation spring 310 having one end 310a is secured to an inner radial portion 401 of the box 400 and the other end 310b is secured to an annular element 309 rotatably mounted on a ring 308, itself secured to the shaft 303.
  • a ring 320 constitutes a pad capable of braking a pawl 306 supported by a mechanical pin 307 secured to a side wall 305 of the spring box 400, this side wall being, in practice, integral with the portion 401 which is fixed relative to the shaft 304.
  • Springs 330 allow to exert on the annular part 309 a force transmitted by a rib 394 in a groove 324 of the ring 320 and tending to press the ring 320 against the pawl 306, as shown by the arrow of force F 2.
  • the force exerted by the springs 330 is overcome by the spring 310, so that the ring 320 is kept at a distance from the pawl 306 while maintaining a clearance J, as represented by the arrow of effort F.
  • the geometry of the grooves 24 and ribs 94 or equivalent elements of the second, third and fourth embodiments is not necessarily helical.
  • the rings 108, 208 and 308 of the second, third and fourth embodiments are respectively provided with teeth 189, 289 and 389 similar to the teeth 89 of the first embodiment.
  • a winding shaft 503 is provided to rotate about an axis XX 'to allow the controlled winding of a apron T.
  • a ring 505 is fixed by a console not shown to the masonry of a building.
  • a pawl 506 is integral, in rotation about the axis X-X ', of the shaft 503 which defines a receiving housing 503a of the pawl 506.
  • the pawl 506 is provided with two branches 561 and 562 and a body central 563.
  • the branch 561 is able to cooperate with an inclined toothing 589 formed at the periphery of the ring 505.
  • a leaf spring 571 exerts on the branch 562 a force F 3 intended to induce a pivoting of the pawl 562 about its axis X 1 -X ' 1 of articulation on the shaft 503 in the direction of the arrow F 4 to the figure 10 , which has the effect of moving the branch 561 away from the toothing 589.
  • the axes XX 'and X 1 -X' 1 are generally parallel.
  • the branches 561 and 562 are generally balanced, which allows the pawl 506 to function effectively, as evoked with reference to the ratchets of the previous embodiments, regardless of the orientation of the shaft 503 about the X-X axis. .
  • a compensation spring 510 is provided in the installation and is locked on a ring 509, itself mounted to pivot about the ring 505.
  • the ring 509 is provided with a radial extension 591 intended to penetrate into a notch 503b arranged in the shaft 503, a spring 530 being interposed between the extension 591 and one side of the notch 503b. This spring exerts on the extension 591 an elastic force F 5 oriented towards the left to the figure 8 .
  • the force F 5 has the effect of moving the ring 509 relative to the shaft 503 to the left at the figure 8 and up to the figure 9 , which has the effect of bringing a surface 592 formed on the ring 509 bearing against an end finger 564 of the pawl 506.
  • the surface 592 is inclined with respect to the axis X 1 -X ' 1 and with respect to the axis X-X', so that the displacement of the ring 509 under the force F 5 , displacement which is represented by the arrow F 6 at the figure 9 , has the effect of pushing the finger 564 and the entire pawl 506 in the direction of the arrow F 7 .
  • the wafer 572 could be mounted on the pawl 506, in which case it is moved with the pawl in the direction of a side face 503 of the housing 503 c.
  • the pawl 606 switches in the direction of the arrow F 8 to the figure 12 , which has the effect of bringing its branch 661 in engagement with a set of teeth 689 provided on a fixed ring 605 with respect to the structure of the building and around which the ring 609 is mounted.
  • the pawl 606 is received in a housing 603a formed in the winding shaft 603 of the deck T.
  • a spring 671 exerts on the pawl 606 an elastic force F 3 away from the branch 661 with respect to the toothing 689.
  • the receiving housings of the ratchet can be obtained by assembly of several parts together forming the shaft 503 or 603.
  • the mechanism 701 of this embodiment also comprises a ring 705 fixed relative to the structure of a building and a ring 709 mounted to pivoting about the ring 705 and rotationally integral with a compensation spring 710.
  • a shaft 703 is provided for the controlled winding of an apron T by its rotation about a generally horizontal axis X-X '.
  • Pawls 706 are provided to cooperate with a toothing 789 provided on the ring 705.
  • a complementary toothing 790 is associated with the toothing 789 for periodically moving the pawls 706 towards the toothing 789 during the rotation of the shaft 703.
  • An extension 703 d is provided on the shaft 703 to extend within a housing 793 formed in the ring 709 and inside which is disposed a spring 730 acting on the extension 703 of an effort F 5 directed to the right at the figure 15 and overcome by the torque exerted by the spring 710 in normal operation of the installation.
  • the force F 5 moves the extension 703 from within the housing 793, which has the effect of rotationally moving the ring 709 relative to the shaft 703, as shown by the arrow F 6 at the figure 16 .
  • a radial notch 794 is provided in the ring 709 while a shuttle 780 is installed in a housing 703 e provided in a part 703 'integral with the shaft 703.
  • the side faces 794a and 794b of the notch 794 are flared, which makes it possible, during the movement F 6 , to exert on the shuttle 780 a centrifugal force F 10 with respect to the axis XX 'and having the effect of moving the end 780a of the shuttle 780 radially outwards, this pushing the pawl 706 radially in the direction of the arrow F 11 and preventing a new introduction of a pawl 706 in the housing 703 f normally provided for it in the shaft 703.
  • the pawl 706 comes into engagement with the teeth 789 and the mechanism is locked in rotation.
  • a shuttle 780 is provided under each housing 703 f .
  • the ring 709 has, moreover, several radial notches 794 corresponding to the different shuttles 780.
  • the tooth of the toothing 789 visible at the figure 16 is bordered by a portion 789 of a relatively small radius of curvature followed by a portion 789 b partially shown in phantom in this Figure, this part is closer to the ring 709 away from the portion 789 a, so that the pawls disposed opposite part 789 b can not leave their respective housings, no radial movement being possible when the portion 789a is adjacent to the ring 709.
  • the two ends 780 a and 180 b of the shuttle 780 are connected by a 780 c forming a spring blade.
  • a 780 c forming a spring blade.
  • the invention has been described with an apron T selectively windable around a shaft for closing an opening O. It is however applicable regardless of the nature of the closure means used, which may in particular be a panel rigid or semi-rigid controlled by straps themselves wound on a tree.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Braking Arrangements (AREA)

Description

L'invention a trait à un dispositif de sécurité pour une installation de fermeture ou de protection solaire. L'invention a également trait à un mécanisme de manoeuvre d'une telle installation.The invention relates to a safety device for a closure or sun protection system. The invention also relates to a mechanism for operating such an installation.

Par installation de fermeture, on entend les portes, portails, volets et matériels équivalents.Closure means doors, gates, shutters and equivalent materials.

Dans une installation de fermeture ou de protection solaire, il est connu d'utiliser un mécanisme d'enroulement pour la manoeuvre d'un tablier, d'une porte, d'un volet ou équivalent. Un tel mécanisme peut être actionné mécaniquement, grâce à une sangle ou à une manivelle, ou électriquement grâce à un moteur qui est le plus souvent de type moteur-frein. Il est connu de compenser le couple exercé sur le mécanisme d'enroulement par le poids du tablier au moyen d'un ou plusieurs ressorts dits de compensation.In a closure or sun protection system, it is known to use a winding mechanism for operating an apron, a door, a shutter or the like. Such a mechanism can be actuated mechanically, thanks to a strap or a crank, or electrically through a motor that is most often motor-brake type. It is known to compensate the torque exerted on the winding mechanism by the weight of the deck by means of one or more so-called compensation springs.

Par ailleurs, il est connu de prévoir des dispositifs de sécurité parfois dénommés « anti-chute » pour empêcher la chute du tablier en cas de rupture mécanique dans la chaîne cinématique de commande du tablier.Furthermore, it is known to provide safety devices sometimes called "anti-fall" to prevent the fall of the deck in case of mechanical failure in the drive control chain of the deck.

FR-A-2 242 010 décrit un cliquet ou balancier qui comporte une branche susceptible de venir en engagement avec une denture externe d'une roue solidaire d'un arbre d'enroulement d'un tablier. Ce balancier comprend une seconde branche pourvue d'un galet qui forme contre-poids à la première, alors que le galet roule sur des ondulations formées à la périphérie d'une seconde roue, solidaire de la première. La gravité tend à plaquer le galet sur la périphérie de la seconde roue, de sorte que la première branche du balancier oscille entre une position d'engagement et de dégagement par rapport aux dents de la première roue sans toutefois buter contre celles-ci, ce qui est effectivement le cas lorsque la vitesse de rotation des roues est réduite. Cependant, si la vitesse de ces roues augmente notamment en cas de chute du tablier, le galet ne suit plus exactement les ondulations périphériques de la seconde roue en raison de l'inertie du balancier et tend à rester décollé de la seconde roue, la première branche étant alors en position d'engagement avec les dents de la première roue et provoquant un blocage brusque du système d'entraînement. FR-A-2 242 010 discloses a pawl or balance which comprises a branch capable of coming into engagement with an external toothing of a wheel secured to a winding shaft of an apron. This balance comprises a second branch provided with a roller which forms a counter-weight to the first, while the roller rolls on corrugations formed at the periphery of a second wheel, integral with the first. Gravity tends to press the pebble onto the periphery of the second wheel, so that the first leg of the balance oscillates between an engagement position and clearance relative to the teeth of the first wheel without abutting against them, which is actually the case when the speed of wheel rotation is reduced. However, if the speed of these wheels increases especially in case of drop of the deck, the roller no longer exactly follows the peripheral ripples of the second wheel due to the inertia of the balance and tends to remain off the second wheel, the first branch then being in the engagement position with the teeth of the first wheel and causing a sudden blocking of the drive system.

Les documents CH-A-573 146 , DE-A-26 17 784 et DE-A-40 02 074 décrivent des dispositifs dans lesquels la denture périphérique d'une unique roue assure à la fois une fonction de blocage et une fonction d'ondulation d'un cliquet ou d'un balancier.The documents CH-A-573 146 , DE-A-26 17 784 and DE-A-40 02 074 describe devices in which the peripheral toothing of a single wheel provides both a locking function and a ripple function of a pawl or a pendulum.

DE-A-29 15 547 prévoit de remplacer les dents par des tiges qui assurent à la fois l'ondulation et le blocage d'un cliquet. Ce dispositif n'est actif pour freiner la rotation d'un arbre d'enroulement qu'au-delà d'une certaine vitesse de cet arbre. DE-A-29 15 547 plans to replace the teeth with rods that provide both the ripple and the locking of a ratchet. This device is active to stop the rotation of a winding shaft only beyond a certain speed of this shaft.

Dans les dispositifs de l'état de la technique, il se produit, lors du blocage de l'arbre d'enroulement, un choc préjudiciable au dispositif de sécurité lui-même et au mécanisme d'entraînement qu'il est censé protéger. Ceci implique de dimensionner en conséquence les pièces constitutives de ces dispositifs de sécurité, en utilisant des matériels relativement nobles ou de prévoir des systèmes amortisseurs tels que ceux envisagés dans EP-A-0 671 543 . Ceci renchérit le prix de revient de ce genre de dispositif et peut augmenter leur encombrement. En outre, dans les installations dites compensées, c'est-à-dire comprenant des ressorts de compensation, une chute à vitesse réduite est possible, les dispositifs de l'art antérieur étant alors globalement inefficaces.In the devices of the state of the art, during the locking of the winding shaft, there is a shock detrimental to the safety device itself and the drive mechanism that it is supposed to protect. This involves dimensioning the constituent parts of these safety devices accordingly, using relatively noble materials or providing damping systems such as those envisaged in EP-A-0 671 543 . This increases the cost price of this kind of device and can increase their size. In addition, in so-called compensated installations, that is to say comprising compensating springs, a fall at reduced speed is possible, the devices of the prior art then being globally inefficient.

En effet, dans ce type d'installations, il est possible de débrayer la liaison entre le moteur d'entraînement et l'arbre, un tel débrayage permettant de manoeuvrer manuellement le tablier, par exemple en l'absence de courant d'alimentation d'un moteur électrique. Dans le cas d'un tel débrayage, il n'existe plus de lien cinématique entre le moteur et le tablier et seul un équilibrage correct de la compensation empêche la chute du tablier. Il est habituel de régler la compensation de manière dominante par rapport au poids du tablier pour pallier les éventuels déficits de compensation qui pourraient se produire dans la durée de vie de l'installation, notamment en raison du rodage et de l'usure inévitable des pièces. Cependant, ceci n'est pas suffisant pour pallier la défaillance ou une fatigue anormale d'un ressort de compensation, auquel cas, le déséquilibrage peut être suffisamment important pour engendrer, à l'instant du débrayage, une chute lente mais dangereuse du tablier. Une telle situation peut notamment se produire dans le cas d'une installation comportant plusieurs moyens de compensation, tels que des boîtes à ressort, tout particulièrement en cas de rupture de l'un des ressorts. Une telle situation peut également se produire dans le cas d'une installation comportant un seul ressort de compensation, dont la constante de raideur diminue avec la fatigue.Indeed, in this type of installation, it is possible to disengage the link between the drive motor and the shaft, such a clutch for manually operating the deck, for example in the absence of feed current d an electric motor. In the case of such a disengagement, there is no kinematic link between the motor and the deck and only a correct compensation compensation prevents the fall of the deck. It is customary to adjust the compensation in a dominant manner with respect to the weight of the deck to compensate for any deficits of compensation that could occur in the lifetime of the installation, especially because of break-in and unavoidable wear parts . However, this is not sufficient to overcome the failure or abnormal fatigue of a compensation spring, in which case, the imbalance may be large enough to generate, at the time of disengagement, a slow but dangerous fall of the deck. Such a situation can in particular occur in the case of an installation comprising several compensation means, such as spring boxes, especially in case of rupture of one of the springs. Such a situation can also occur in the case of an installation comprising a single compensation spring, whose stiffness constant decreases with fatigue.

Ces défaillances ont un caractère insidieux ce qui les rend particulièrement dangereuses. En effet, elles n'apparaissent pas en fonctionnement normal de l'installation, c'est-à-dire lorsque l'installation est manoeuvrée par le moteur, ce qui est généralement le cas. Comme il est d'usage de surdimensionner le moteur et la structure pour pouvoir absorber les points durs et les variations de coefficient de frottement qui apparaissent inévitablement dans la vie de l'installation, une insuffisance d'équilibrage résultant de ce type de défaillance est du même coup masquée. Ce n'est qu'au moment du débrayage, à l'occasion d'un besoin de manoeuvre manuelle, qui intervient à un instant souvent inattendu, que le phénomène apparaît.These failures are insidious, which makes them particularly dangerous. Indeed, they do not appear in normal operation of the installation, that is to say when the installation is operated by the engine, which is generally the case. As it is customary to oversize the motor and the structure in order to be able to absorb the hard points and friction coefficient variations that inevitably appear in the life of the installation, an insufficiency of balancing resulting from this type of failure is same masked blow. It is only at the moment of disengagement, when there is a need for manual maneuvering, which occurs at an often unexpected time, that the phenomenon appears.

Il est, par ailleurs, connu de US-A-2,878,865 de coupler un ressort de compensation à un cliquet qui n'oscille pas lors des mouvements d'abaissement d'une porte. Ce cliquet non oscillant bloque la descente du tablier sous l'effet d'un déficit entre le couple produit par le ressort de compensation et celui dû au poids de la porte. Ainsi, une porte équipée d'un tel mécanisme n'est pas manoeuvrable à la descente par une action directe sur celle-ci, ce qui est rédhibitoire en pratique car une porte ou une grille de magasin doit pouvoir être fermée, y compris en cas de coupure de courant. En effet, une action directe sur la porte à la descente est détectée par le mécanisme comme un déficit de compensation. En outre, comme le blocage du cliquet est obtenu par un déficit de compensation, il est nécessaire que les ressorts de compensation soient surdimensionnés afin que les efforts qu'ils déploient soient toujours supérieurs à l'effet du poids de la porte s'abaissant, faute de quoi le mouvement d'abaissement du tablier ou de la grille par l'action du moteur induit des blocages/déblocages successifs du cliquet qui peuvent, à la longue, endommager le mécanisme.It is, moreover, known to US Patent 2,878,865 coupling a compensation spring to a pawl that does not oscillate during the lowering movements of a door. This non-oscillating ratchet blocks the descent of the deck under the effect of a deficit between the torque produced by the compensation spring and that due to the weight of the door. Thus, a door equipped with such a mechanism is not operable to the descent by a direct action on it, which is unacceptable in practice because a door or a store rack must be closed, including in case of power failure. Indeed, a direct action on the door to the descent is detected by the mechanism as a compensation deficit. In addition, since the locking of the pawl is obtained by a compensation deficit, it is necessary that the compensation springs are oversized so that the efforts they deploy are always greater than the effect of the weight of the door lowering, otherwise the downward movement of the apron or grid by the action of the motor induces successive blockages / releases of the pawl that can, in the long run, damage the mechanism.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un dispositif de sécurité pour une installation.de fermeture ou de protection solaire comprenant un cliquet oscillant qui fonctionne correctement, y compris en cas de défaillance d'un moyen de compensation, tel qu'un ressort.It is these drawbacks that the invention more particularly intends to remedy by proposing a safety device for a closing or sun protection installation comprising an oscillating ratchet. which functions properly, including in case of failure of a compensating means, such as a spring.

Dans cet esprit, l'invention concerne un dispositif de sécurité pour installation de fermeture ou de protection solaire comprenant un mécanisme d'entraînement d'un tablier d'obturation d'une ouverture, ce mécanisme incluant un arbre solidaire et un élément pourvu d'une denture apte à coopérer avec au moins un cliquet oscillant ou avec un élément cylindrique oscillant lors des mouvements de rotation de l'arbre et apte à l'immobiliser en rotation. Ce dispositif est caractérisé en ce qu'il comprend des moyens de freinage ou de blocage du cliquet ou de l'élément cylindrique dans son mouvement d'oscillations pendant un mouvement de déroulement du tablier, ces moyens de freinage ou de blocage étant commandés par des moyens de détection d'une rupture ou d'une défaillance d'un ressort ou d'un câble de compensation du couple exercé sur cet arbre par le tablier.In this spirit, the invention relates to a safety device for a closing or sun protection system comprising a drive mechanism of an obturation shutter of an opening, this mechanism including a fixed shaft and an element provided with a toothing adapted to cooperate with at least one oscillating pawl or with a cylindrical element oscillating during the rotational movements of the shaft and able to immobilize it in rotation. This device is characterized in that it comprises means for braking or blocking the pawl or the cylindrical element in its oscillation movement during a rolling movement of the apron, these braking or locking means being controlled by means of means for detecting a rupture or failure of a spring or a torque compensation cable exerted on this shaft by the apron.

Grâce à l'invention, une défaillance d'un moyen de compensation tel qu'un ressort, et tout particulièrement une rupture d'un tel ressort, induit un freinage du cliquet oscillant, ce qui permet de le maintenir en position de blocage de l'élément pourvu d'une denture. Ceci conduit à une immobilisation immédiate de l'arbre, sans qu'il soit nécessaire que l'arbre ait une vitesse de rotation prédéterminée. En d'autres termes, les moyens de freinage et les moyens de détection associés permettent de réagir immédiatement à une défaillance des moyens de compensation, avant que ne se produise une variation sensible de vitesse de l'arbre rotatif correspondant à un déplacement potentiellement dangereux du moyen d'obturation. Le dispositif de l'invention fonctionne, en pratique, grâce à une détection du couple dû au ressort de compensation et non pas par la détection d'un déficit de compensation. Pour les installations de type compensé, le dispositif assure une double protection, à savoir une protection à faible vitesse, ce qui est le cas lorsque la défaillance concerne le moyen de compensation, et à haute vitesse, ce qui est le cas pour les autres défaillances. Il s'avère en pratique que, dans les installations compensées, la chute du moyen d'obturation, c'est-à-dire le plus souvent du tablier, est le plus souvent le fait d'une défaillance du moyen de compensation. Grâce à l'invention, la durée de vie de l'installation est maintenue puisque, dans le cas le plus fréquent, il n'est pas créé de choc lors de la mise en oeuvre du dispositif de sécurité. Le dispositif de l'invention est également plus simple, plus léger, moins onéreux et moins encombrant que ceux de l'état de la technique.Thanks to the invention, a failure of a compensation means such as a spring, and more particularly a rupture of such a spring, induces a braking of the oscillating pawl, which makes it possible to hold it in the locking position of the spring. element provided with a toothing. This leads to an immediate immobilization of the shaft, without the need for the shaft to have a predetermined rotational speed. In other words, the braking means and the associated detection means make it possible to react immediately to a failure of the compensating means, before a significant variation in speed of the rotary shaft corresponding to a potentially dangerous displacement of the rotary shaft occurs. shutter means. The device of the invention operates, in practice, through a detection of the torque due to the compensation spring and not by the detection of a compensation deficit. For compensated type installations, the device provides dual protection, ie low speed protection, which is the case when the failure concerns the compensation means, and at high speed, which is the case for other failures. It turns out in practice that, in compensated installations, the fall of the closure means, that is to say most of the deck, is most often the result of a failure of the compensation means. Thanks to the invention, the life of the installation is maintained since, in the most frequent case, it is not created shock during the implementation of the safety device. The device of the invention is also simpler, lighter, less expensive and less cumbersome than those of the state of the art.

Selon des aspects avantageux de l'invention, ce dispositif incorpore une ou plusieurs des caractéristiques suivantes :

  • Les moyens de freinage ou de blocage comprennent un patin mobile axialement par rapport à l'arbre précité et apte à venir en appui contre le cliquet. De façon avantageuse, ce patin porte au moins un relief apte à coopérer avec un relief correspondant prévu sur un organe solidaire en rotation du moyen de compensation, pour le contrôle de la position axiale du patin par rapport au cliquet.
  • Les reliefs prévus respectivement sur l'organe et sur le patin précités peuvent comprendre des nervures et des gorges aptes à s'engager les unes dans les autres. Ces nervures et gorges permettent, par exemple par un mouvement de vissage/dévissage, de contrôler la position axiale du patin. On peut, en outre prévoir que certains au moins des reliefs précités sont formés sur des languettes s'étendant à travers des ouvertures ménagées dans l'élément solidaire de l'arbre.
  • Le patin et l'organe précités sont avantageusement disposés axialement de part et d'autre de l'élément solidaire de l'arbre en étant reliés cinématiquement par la coopération des reliefs précités. Des moyens d'application d'un effort élastique de déplacement du patin vers le cliquet peuvent être prévus. Dans ce cas, l'organe et l'élément solidaire de l'arbre sont avantageusement pourvus de nervures entre lesquelles est disposé au moins un ressort de compression exerçant un couple de mise en rotation de l'organe solidaire du moyen de compensation par rapport à l'élément solidaire de l'arbre.
  • Le patin est une bague disposée à l'intérieur de l'arbre et autour d'un élément formant support et/ou ensemble de motorisation pour le mécanisme.
  • Les moyens de freinage ou de blocage sont aptes à déplacer ou à faire basculer le cliquet vers une position freinée ou bloquée. Dans ce cas, il peut être prévu une pastille de friction, montée sur le cliquet ou en regard de celui-ci, et destiné à recevoir en appui le cliquet ou à venir au contact d'une surface d'appui. Les moyens de freinage ou de blocage peuvent en outre comprendre une surface ménagée sur une pièce solidaire en rotation du moyen de compensation et destinée à exercer, directement ou indirectement sur le cliquet, un effort de déplacement ou de basculement. Cette surface peut s'étendre selon une direction globalement inclinée par rapport à un axe de rotation de l'arbre, cette surface formant alors une rampe apte à déplacer le cliquet vers sa position freinée ou bloquée. Cette surface peut également être globalement radiale par rapport à un axe de rotation de l'arbre et être apte à coopérer avec un doigt du cliquet pour le faire basculer, autour de son axe d'oscillations, vers une position freinée ou bloquée par engagement avec la denture. Des moyens de rappel du cliquet à l'opposé de la position freinée ou bloquée peuvent être prévus. Les moyens de freinage ou de blocage peuvent également comprendre au moins une navette apte à déplacer le cliquet en direction d'une denture fixe de blocage. Dans ce cas, cette navette est avantageusement pourvue d'un moyen élastique d'ajustement de sa longueur, prise entre une surface d'appui et le cliquet. Il peut en outre prévu des moyens de rappel élastique des moyens de freinage ou de blocage vers une position dans laquelle ils exercent sur le cliquet un effort de déplacement ou de basculement vers la position freinée ou bloquée.
  • Le cliquet peut être monté sur un élément fixe de l'installation où, au contraire sur un élément solidaire en rotation de l'arbre, en étant destiné à être entraîné en rotation par celui-ci.
  • Les moyens de freinage ou de blocage, les moyens de détection et le moyen de compensation sont disposés autour d'un élément formant support et/ou ensemble de motorisation pour le mécanisme.
According to advantageous aspects of the invention, this device incorporates one or more of the following characteristics:
  • The braking or locking means comprise a slider axially movable relative to the aforementioned shaft and adapted to bear against the pawl. Advantageously, this pad carries at least one relief adapted to cooperate with a corresponding relief provided on a member integral in rotation of the compensation means for controlling the axial position of the pad relative to the pawl.
  • The reliefs respectively provided on the member and on the aforementioned pad may comprise ribs and grooves adapted to engage one into the other. These ribs and grooves allow, for example by a screwing / unscrewing movement, to control the axial position of the pad. It can further be provided that at least some of the aforementioned reliefs are formed on tabs extending through openings in the element integral with the shaft.
  • The aforementioned pad and member are advantageously arranged axially on either side of the element secured to the shaft being kinematically connected by the cooperation of the aforementioned reliefs. Means for applying an elastic force of movement of the pad towards the pawl can be provided. In this case, the member and the element integral with the shaft are advantageously provided with ribs between which is disposed at least one compression spring exerting a pair of rotation of the integral member of the compensation means with respect to the element integral with the tree.
  • The pad is a ring disposed within the shaft and around a support member and / or motor assembly for the mechanism.
  • The braking or locking means are able to move or to tilt the pawl to a braked or blocked position. In this case, it may be provided a friction pad, mounted on the pawl or opposite thereof, and intended to receive the pawl support or to come into contact with a bearing surface. The braking or locking means may further comprise a surface formed on a mutually integral part of the compensation means and intended to exert, directly or indirectly on the pawl, a displacement or tilting force. This surface can extend in a generally inclined direction relative to an axis of rotation of the shaft, this surface then forming a ramp capable of moving the pawl to its braked or blocked position. This surface may also be generally radial with respect to an axis of rotation of the shaft and be adapted to cooperate with a pawl finger to tilt it, about its oscillation axis, to a braked or blocked position by engagement with the teeth. Returning means of the pawl opposite the braked or blocked position may be provided. The means of braking or blocking may also include at least one shuttle capable of moving the pawl towards a fixed toothing locking. In this case, this shuttle is advantageously provided with an elastic means of adjustment of its length, taken between a bearing surface and the pawl. It may furthermore provide means for elastic return of the braking or locking means to a position in which they exert on the pawl a displacement or tilting force towards the braked or locked position.
  • The pawl can be mounted on a fixed element of the installation where, on the contrary on a member integral with rotation of the shaft, being intended to be rotated by it.
  • The braking or locking means, the detection means and the compensation means are arranged around a support element and / or motorization assembly for the mechanism.

Selon un premier mode de réalisation de l'invention, le moyen de compensation est un ressort bandé autour d'un support d'extrémité de l'arbre, entre une partie fixe par rapport au support et un organe annulaire apte à tourner autour de celui-ci en étant entraîné par l'arbre, le cliquet étant monté pivotant autour d'un axe fixe par apport au support.According to a first embodiment of the invention, the compensation means is a spring banded around an end support of the shaft, between a fixed part relative to the support and an annular member adapted to rotate around that -cci being driven by the shaft, the pawl being pivotally mounted about a fixed axis by providing support.

Selon un second mode de réalisation de l'invention, le moyen de compensation est un ressort bandé par un poids et solidaire d'un organe annulaire entourant un support d'extrémité de l'arbre, le cliquet étant monté pivotant autour d'un axe fixe par rapport à ce support.According to a second embodiment of the invention, the compensation means is a spring loaded by a weight and secured to an annular member surrounding an end support of the shaft, the pawl being pivotally mounted about an axis. fixed relative to this support.

Selon un troisième mode de réalisation de l'invention, le moyen de compensation est un ressort bandé autour d'un ensemble de motorisation disposé à l'intérieur de l'arbre, le cliquet étant monté pivotant autour d'un axe fixe par rapport à une partie formant support d'extrémité de cet arbre.According to a third embodiment of the invention, the compensation means is a spring banded around a motor assembly disposed inside the shaft, the pawl being pivotally mounted about a fixed axis by relative to an end support portion of this shaft.

Selon un quatrième mode de réalisation de l'invention, le moyen de compensation est un ressort intégré dans une boîte à ressort(s) disposée à l'intérieur de l'arbre, entre celui-ci et un arbre fixe, la boîte à ressort(s) comprenant également le cliquet, les moyens de freinage et les moyens de détection.According to a fourth embodiment of the invention, the compensation means is a spring integrated in a spring box (s) disposed inside the shaft, between the latter and a fixed shaft, the spring box (s) also comprising the pawl, the braking means and the detection means.

L'invention concerne également un mécanisme de manoeuvre d'une installation de fermeture ou de protection solaire qui comprend un dispositif de sécurité tel que précédemment décrit. Un tel mécanisme est plus fiable, plus compact et moins onéreux que ceux de l'état de la technique. Il est en particulier sécurisé à l'encontre d'une défaillance d'un ressort de compensation.The invention also relates to a mechanism for operating a closure or sun protection system which comprises a safety device as previously described. Such a mechanism is more reliable, more compact and less expensive than those of the state of the art. It is particularly secure against a failure of a compensation spring.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre de sept modes de réalisation d'un mécanisme de manoeuvre équipé d'un dispositif de sécurité conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • La figure 1 est une vue en perspective de certains éléments constitutifs d'un mécanisme conforme à l'invention ;
  • La figure 2 est une vue en perspective des éléments de la figure 1, avec un autre angle de vue ;
  • La figure 3 est une coupe partielle d'un mécanisme conforme à l'invention incorporant les éléments représentés aux figures 1 et 2 ;
  • La figure 4 est une vue analogue à la figure 3 pour un mécanisme conforme à un second mode de réalisation de l'invention ;
  • La figure 5 est une vue analogue à la figure 3 pour un mécanisme conforme à un troisième mode de réalisation de l'invention ;
  • La figure 6 est une vue analogue à la figure 3 pour un mécanisme conforme à un quatrième mode de réalisation de l'invention ;
  • La figure 7 est une coupe partielle de principe d'un mécanisme conforme à un cinquième mode de réalisation de l'invention ;
  • La figure 8 est une coupe selon la ligne VIII-VIII à la figure 7 ;
  • La figure 9 est une coupe selon la ligne IX-IX à la figure 8 ;
  • La figure 10 est une coupe selon la ligne X-X à la figure 7 ;
  • La figure 11 est une coupe analogue à la figure 7 pour un mécanisme conforme à un sixième mode de réalisation de l'invention ;
  • La figure 12 est une coupe selon la ligne XII-XII à la figure 11 ;
  • La figure 13 est une coupe selon la ligne XIII-XIII à la figure 11 ;
  • La figure 14 est une coupe analogue à la figure 7 pour un mécanisme conforme à un septième mode de réalisation de l'invention ;
  • La figure 15 est une coupe selon la ligne XV-XV à la figure 14 et
  • La figure 16 est une coupe selon la ligne XVI-XVI à la figure 14.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of seven embodiments of an operating mechanism equipped with a safety device according to its principle, given only by way of example and with reference to the appended drawings in which:
  • The figure 1 is a perspective view of certain elements constituting a mechanism according to the invention;
  • The figure 2 is a perspective view of the elements of the figure 1 , with another angle of view;
  • The figure 3 is a partial section of a mechanism according to the invention incorporating the elements represented in FIGS. figures 1 and 2 ;
  • The figure 4 is a view similar to the figure 3 for a mechanism according to a second embodiment of the invention;
  • The figure 5 is a view similar to the figure 3 for a mechanism according to a third embodiment of the invention;
  • The figure 6 is a view similar to the figure 3 for a mechanism according to a fourth embodiment of the invention;
  • The figure 7 is a partial sectional view of a mechanism according to a fifth embodiment of the invention;
  • The figure 8 is a section along the line VIII-VIII to the figure 7 ;
  • The figure 9 is a section along the line IX-IX to the figure 8 ;
  • The figure 10 is a section along the line XX to the figure 7 ;
  • The figure 11 is a cut similar to the figure 7 for a mechanism according to a sixth embodiment of the invention;
  • The figure 12 is a section along the line XII-XII to the figure 11 ;
  • The figure 13 is a section along the line XIII-XIII to the figure 11 ;
  • The figure 14 is a cut similar to the figure 7 for a mechanism according to a seventh embodiment of the invention;
  • The figure 15 is a section along the line XV-XV to the figure 14 and
  • The figure 16 is a section along the line XVI-XVI to the figure 14 .

Le mécanisme 1 représenté partiellement aux figures 1 à 3 est prévu pour l'enroulement commandé, autour d'un axe sensiblement horizontal X-X', d'un tablier T permettant d'obturer sélectivement une ouverture O prévue dans un bâtiment. Ce mécanisme est destiné à être supporté par rapport à la maçonnerie d'un bâtiment, au moyen d'une consolé 2 éventuellement intégrée à un coffre tunnel.Mechanism 1 partially represented in Figures 1 to 3 is provided for the controlled winding, around a substantially horizontal axis X-X ', an apron T to selectively close an opening O provided in a building. This mechanism is intended to be supported by compared to the masonry of a building, by means of a consolation 2 possibly integrated into a tunnel box.

Le mécanisme 1 comprend un arbre tubulaire 3 à section circulaire et dont l'axe longitudinal est confondu avec l'axe X-X'. L'arbre 3 pourrait avoir une section polygonale ou un autre profil.The mechanism 1 comprises a tubular shaft 3 with a circular section and whose longitudinal axis coincides with the axis X-X '. The shaft 3 could have a polygonal section or another profile.

Un support 4, fixé par tout moyen approprié sur la console 2, est disposé à l'intérieur du tube 3 et est équipé d'une bague annulaire 5 qui entoure le support 4 en étant immobilisée sur celui-ci en rotation et en translation. La bague 5 est donc fixe par rapport à la maçonnerie du bâtiment.A support 4, fixed by any appropriate means on the console 2, is disposed inside the tube 3 and is equipped with an annular ring 5 which surrounds the support 4 being immobilized thereon in rotation and in translation. The ring 5 is fixed in relation to the masonry of the building.

Un cliquet 6 est monté sur un axe mécanique 7 traversant une ouverture 51 de la bague 5. On note A-A' l'axe géométrique de symétrie de l'arbre 7. Les axes X-X' et A-A' sont globalement parallèles.A pawl 6 is mounted on a mechanical axis 7 passing through an opening 51 of the ring 5. Note A-A 'the geometric axis of symmetry of the shaft 7. The axes X-X' and A-A 'are generally parallel.

Le cliquet 6 comprend une première branche 61 s'étendant radialement par rapport à l'axe A-A' lorsque le cliquet 6 est monté sur l'axe 7 et une seconde branche 62.The pawl 6 comprises a first branch 61 extending radially with respect to the axis A-A 'when the pawl 6 is mounted on the axis 7 and a second branch 62.

Une bague 8 est également montée autour du support 4 et immobilisée axialement par rapport à celui-ci grâce à un circlip 81 engagé dans une gorge 41 du support 4. La bague 8 est solidaire en rotation de l'arbre 3.A ring 8 is also mounted around the support 4 and immobilized axially relative thereto by means of a circlip 81 engaged in a groove 41 of the support 4. The ring 8 is integral in rotation with the shaft 3.

La bague 8 comprend un manchon interne 82 définissant une surface cylindrique à base circulaire 83 de rayon sensiblement égal à la surface radiale externe 43 du support 4, de telle sorte que la bague 8 peut tourner autour de l'axe X-X' en glissant sur la surface 43.The ring 8 comprises an internal sleeve 82 defining a cylindrical surface with a circular base 83 of radius substantially equal to the outer radial surface 43 of the support 4, so that the ring 8 can rotate about the axis XX 'by sliding on the surface 43.

La bague 8 comprend également un manchon externe 84 pourvu de perçages 85 de passage de vis non représentées permettant de solidariser en rotation et en translation la bague 8 et l'arbre 3.The ring 8 also comprises an outer sleeve 84 provided with holes 85 not shown to allow the rotation of the ring 8 and the shaft 3 in rotation and in translation.

Un voile annulaire 86 relie les manchons 82 et 84 et est percé de trois ouvertures 87.An annular web 86 connects the sleeves 82 and 84 and is pierced with three openings 87.

Trois nervures 88, radiales et globalement planes, sont également prévues entre les manchons 82 et 84 en étant perpendiculaires au voile 86.Three ribs 88, radial and generally flat, are also provided between the sleeves 82 and 84 being perpendicular to the web 86.

Une denture inclinée 89 est ménagée à l'intérieur du manchon 84. Cette denture est orientée et dimensionnée pour coopérer, en cas de besoin, avec la branche 62 du cliquet 6.An inclined toothing 89 is formed inside the sleeve 84. This toothing is oriented and dimensioned to cooperate, if necessary, with the branch 62 of the pawl 6.

Un anneau 9 est prévu pour être monté autour du manchon 82 en étant maintenu axialement par un circlip 91 engagé dans une gorge 81' de la bague 81. La surface externe 92 de l'anneau 9 est globalement tronconique et étagée. La surface 92 est également pourvue d'une encoche 93 de réception et de coincement d'une première extrémité d'un ressort de compensation 10 dont la partie la plus proche de cette extrémité est enroulée sur la surface 92.A ring 9 is provided to be mounted around the sleeve 82 being held axially by a circlip 91 engaged in a groove 81 'of the ring 81. The outer surface 92 of the ring 9 is generally frustoconical and stepped. The surface 92 is also provided with a notch 93 for receiving and jamming a first end of a compensation spring 10, the part of which is closest to this end is wound on the surface 92.

L'extrémité opposée du ressort 10 est immobilisée sur une bague 11 de forme extérieure également tronconique, elle-même immobilisée sur le support 4 grâce à un pion 12.The opposite end of the spring 10 is immobilized on a ring 11 of external shape also frustoconical, itself immobilized on the support 4 by means of a pin 12.

Un ensemble de motorisation non représenté, qui peut être électrique ou mécanique et disposé à proximité de l'extrémité opposée de l'arbre 3, permet d'entraîner en rotation l'arbre 3 autour de l'axe X-X', comme représenté par la double flèche R à la figure 3.A motor assembly not shown, which may be electrical or mechanical and disposed near the opposite end of the shaft 3, rotates the shaft 3 about the axis X-X ', as shown by the double arrow R at the figure 3 .

L'anneau 9 est pourvu de nervures 95 s'étendant chacune selon une direction radiale par rapport à un manchon central 96 et pourvues d'un pion 97 de centrage d'un ressort de compression 30 destiné à être logé entre une nervure 95 et une nervure 88 qui sont en regard lorsque l'anneau 9 est monté sur la bague 8, comme représenté sur la figure 3.The ring 9 is provided with ribs 95 each extending in a radial direction relative to a central sleeve 96 and provided with a pin 97 for centering a compression spring 30 to be housed between a rib 95 and a rib 88 which are opposite when the ring 9 is mounted on the ring 8, as shown in FIG. figure 3 .

En fonction de la position du tablier T par rapport à l'ouverture O, le ressort de compensation 10 est plus ou moins bandé entre l'anneau 9 et la bague 11. En effet, l'arbre 3 entraîne en rotation la bague 8 qui entraîne, par la coopération des nervures 88 et 95, l'anneau 9. En fonction du sens de rotation de l'anneau 9 autour de l'axe X-X', la tension du ressort 10 augmente ou diminue.Depending on the position of the deck T relative to the opening O, the compensation spring 10 is more or less banded between the ring 9 and the ring 11. In fact, the shaft 3 rotates the ring 8 which trained by the cooperation of the ribs 88 and 95, the ring 9. Depending on the direction of rotation of the ring 9 about the axis X-X ', the tension of the spring 10 increases or decreases.

Lors des mouvements de rotation de l'arbre 3 autour de l'axe X-X' pour l'enroulement ou le déroulement du tablier T, le cliquet 6 oscille autour de l'axe A-A', ce mouvement d'oscillations étant engendré par les contacts successifs entre la branche 62 et les dents de la denture 89 et par l'effet du poids de la branche 61 qui est plus lourde que la branche 62.During the rotational movements of the shaft 3 about the axis XX 'for the winding or unwinding of the deck T, the pawl 6 oscillates about the axis A-A', this oscillations movement being generated by the successive contacts between the branch 62 and the teeth of the toothing 89 and the effect of the weight of the branch 61 which is heavier than the branch 62.

Dans ce mode de réalisation et dans ceux qui suivent, le cliquet 6 ou équivalent est de type non bloquant par défaut. Il devient bloquant sous l'effet de la force centrifuge, lors d'une rotation rapide de l'arbre 3 ou équivalent en déroulement du tablier T.In this embodiment and in those which follow, the pawl 6 or equivalent is of the non-blocking type by default. It becomes blocking under the effect of the centrifugal force, during a rapid rotation of the shaft 3 or equivalent in unfolding the deck T.

Une bague 20 est intercalée entre la bague 5 et la face 86a du voile 86 tourné vers la bague 5. En fait, la bague 20 est intercalée entre la face 86a et le cliquet 6. La bague 20 a des diamètres intérieur Di et extérieur De tels que sa face 21 tournée vers le cliquet 6 est globalement alignée avec une face latérale 63 de ce cliquet.A ring 20 is interposed between the ring 5 and the face 86 a of the web 86 facing towards the ring 5. In fact, the ring 20 is interposed between the face 86a and the pawl 6. The ring 20 has inner diameter D i and Outside such that its face 21 facing the pawl 6 is generally aligned with a side face 63 of the pawl.

Ainsi, en fonction de sa position axiale, c'est-à-dire de sa position le long de l'axe X-X', la bague 20 est susceptible de venir en appui contre le cliquet 6.Thus, as a function of its axial position, that is to say of its position along the axis XX ', the ring 20 is able to bear against the pawl 6.

La bague 20 est pourvue de trois languettes 22 dimensionnées pour être engagées dans les ouvertures 87 de la bague 8 et munies chacune, sur leur face 23 tournée vers l'axe X-X', d'une gorge 24 en forme de tronçon d'hélice.The ring 20 is provided with three tongues 22 sized to be engaged in the openings 87 of the ring 8 and each provided, on their face 23 facing the X-X 'axis, with a groove 24 in the form of a section of FIG. propeller.

L'anneau 9 est pourvu de trois nervures hélicoïdales 94 dimensionnées et disposées de telle sorte qu'elles peuvent être engagées dans les gorges 24 de la bague 20.The ring 9 is provided with three helical ribs 94 dimensioned and arranged such that they can be engaged in the grooves 24 of the ring 20.

L'angle d'inclinaison des éléments 94 et 24 par rapport à l'axe X-X' est tel que les éléments 94 et 24 jouent le rôle de filets permettant de « visser » la bague 20 sur l'anneau 9 dans le sens représenté par la flèche R' à la figure 1.The angle of inclination of the elements 94 and 24 with respect to the axis XX 'is such that the elements 94 and 24 play the role of nets to "screw" the ring 20 on the ring 9 in the direction represented by the arrow R 'to the figure 1 .

Le fonctionnement est le suivant :

  • Lorsque le ressort 10 joue efficacement son rôle de compensation, il exerce sur l'anneau 9 un couple C1 dirigé dans un sens tel qu'il a tendance à faire progresser les nervures 94 dans les gorges 24 dans un sens de vissage de la bague 20 sur l'anneau 9. Dans ces conditions, la bague 20 est tirée vers le voile 86, ce qui est représenté par l'effort F1 aux figures 1 et 3. '
The operation is as follows:
  • When the spring 10 effectively plays its compensating role, it exerts on the ring 9 a torque C 1 directed in a direction such that it tends to advance the ribs 94 in the grooves 24 in a direction of screwing of the ring 20 under the ring 9. Under these conditions, the ring 20 is pulled towards the web 86, which is represented by the force F 1 to figures 1 and 3 . '

Ainsi, un jeu J est ménagé entre la bague 20 et la face latérale 63 du cliquet 6.Thus, a clearance J is provided between the ring 20 and the lateral face 63 of the pawl 6.

En cas de rupture ou de défaillance du ressort 10, le couple C1 est annulé ou vaincu par un couple C2 exercé en sens inverse par les ressorts 30, ce qui a pour effet de faire tourner l'anneau 9 autour de l'axe X-X' dans le sens de la flèche R' à la figure 1. Ceci induit un effort de déplacement de la bague 20 en direction du cliquet 6, cet effort étant représenté par la flèche F2 aux figures 1 et 3.In case of rupture or failure of the spring 10, the torque C 1 is canceled or overcome by a torque C 2 exerted in the opposite direction by the springs 30, which has the effect of rotating the ring 9 about the axis XX 'in the direction of the arrow R' to the figure 1 . This induces a force of displacement of the ring 20 towards the pawl 6, this force being represented by the arrow F 2 to figures 1 and 3 .

On note que le couple C2 a une valeur relativement faible par rapport au couple C1. La valeur des constantes de raideur des ressorts 30 est choisie dans ce but en fonction de celle du ressort 10. Ainsi, le freinage ou le blocage du cliquet 6 est obtenu en cas de défaillance totale ou quasi-totale du ressort 10 et non pas en cas de sous-compensation momentanée due, par exemple, à une variation du diamètre d'enroulement du tablier, comme cela pourrait se produire dans un dispositif fonctionnant sur la base d'un déficit de compensation. Ces remarques valent également, moyennant d'éventuelles adaptations, pour les autres modes de réalisation.Note that the torque C 2 has a relatively low value compared to the torque C 1 . The value of the stiffness constants of the springs 30 is chosen for this purpose as a function of that of the spring 10. Thus, braking or blocking of the pawl 6 is obtained in the event of complete or almost complete failure of the spring 10 and not in case of momentary under-compensation due, for example, to a variation of the winding diameter of the deck, as could occur in a device operating on the basis of a compensation deficit. These remarks are also valid, with possible adaptations, for the other embodiments.

La bague 20 joue alors le rôle d'un patin de freinage du cliquet 6, car sa face 21 vient au contact de la face latérale 63 de ce cliquet.The ring 20 then plays the role of a brake pad of the pawl 6, because its face 21 comes into contact with the side face 63 of the pawl.

Ainsi, une défaillance ou une rupture du ressort 10 est détectée grâce aux éléments 8, 9 et 30 et cette détection permet de commander la translation de la bague 20 en direction du cliquet 6 que la bague formant patin peut efficacement freiner dans son mouvement par rapport à la denture 89. En étant freiné, le cliquet 6 se bloque en engagement dans la denture 89 et immobilise ainsi la bague 8 par rapport à la bague 5, c'est-à-dire l'arbre 3 par rapport au support 4 et à la console 2.Thus, a failure or rupture of the spring 10 is detected thanks to the elements 8, 9 and 30 and this detection makes it possible to control the translation of the ring 20 in the direction of the pawl 6 that the ring forming a pad can effectively brake in its movement relative to at the toothing 89. By being braked, the pawl 6 is locked in engagement with the toothing 89 and thus immobilizes the ring 8 with respect to the ring 5, that is to say the shaft 3 relative to the support 4 and at the console 2.

Le tablier T ne risque alors plus de tomber accidentellement.The apron T then no longer risk falling accidentally.

Dans le second mode de réalisation de l'invention représenté à la figure 4, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 100. Le mécanisme 101 de ce mode de réalisation est prévu pour l'enroulement d'un tablier T et comprend un arbre 103 monté sur une bague 108, elle-même supportée par un support 104 immobilisé par rapport à une console 102 fixe par rapport à la maçonnerie d'un bâtiment.In the second embodiment of the invention shown in figure 4 , the elements similar to those of the first embodiment carry identical references increased by 100. The mechanism 101 of this embodiment is provided for the winding of an apron T and comprises a shaft 103 mounted on a ring 108, it -Even supported by a support 104 immobilized relative to a console 102 fixed relative to the masonry of a building.

Une bague 105 est montée à l'extrémité du support 104 et immobilisée axialement grâce à un circlip 151 et en rotation par coopération de formes.A ring 105 is mounted at the end of the support 104 and immobilized axially by means of a circlip 151 and in rotation by cooperation of shapes.

La bague 105 supporte un axe mécanique 107 dont on note A-A' l'axe géométrique, alors qu'on note X-X' l'axe géométrique du tube 103 qui est également son axe de rotation. Les axes A-A' et X-X' sont globalement parallèles.The ring 105 supports a mechanical axis 107 whose A-A 'geometric axis is noted, while note X-X' the geometric axis of the tube 103 which is also its axis of rotation. Axes A-A 'and X-X' are generally parallel.

Un anneau 109 est disposé sur la bague 108 et immobilisé axialement, avec possibilité de rotation, grâce à un circlip 181. L'anneau 109 se prolonge axialement par un manchon 192. Autour de ce manchon 192 est enroulé un câble 110 auquel est suspendu un poids P.A ring 109 is disposed on the ring 108 and immobilized axially, with the possibility of rotation, by means of a circlip 181. The ring 109 is extended axially by a sleeve 192. Around this sleeve 192 is wound a cable 110 which is suspended a weight P.

Comme précédemment, une bague 120 est équipée de languettes 122 pourvues de gorges 124 de réception de nervures 194 ménagées sur l'anneau 109, la coopération des éléments 124 et 194 permettant d'exercer sur la bague 120 des efforts F1 et F2 de translation parallèlement aux axes A-A' et X-X', ce qui permet à la bague 120 de venir sélectivement freiner un cliquet 106 monté sur l'axe 107.As before, a ring 120 is equipped with tabs 122 provided with grooves 124 for receiving ribs 194 formed on the ring 109, the cooperation of the elements 124 and 194 making it possible to exert on the ring 120 efforts F 1 and F 2 of translation parallel to the axes AA 'and X-X', which allows the ring 120 to selectively brake a pawl 106 mounted on the axis 107.

L'effort F1 est généré par le poids P, alors que l'effort F2 est généré par des ressorts 130 intercalés entre des nervures appartenant respectivement à la bague 108 et à l'anneau 109.The force F 1 is generated by the weight P, whereas the force F 2 is generated by springs 130 interposed between ribs respectively belonging to the ring 108 and to the ring 109.

Une défaillance des moyens de supportage du poids P, notamment une rupture du câble 110, a pour effet de faire tourner l'anneau 109 autour de l'axe X-X'. Ceci induit, comme dans le mode de réalisation précédent, un déplacement de la bague 120 en direction du cliquet 106, la bague bloquant le cliquet en engagement dans la denture 189. Il en résulte que la bague 108 et le tube 103 sont immobilisés en rotation par rapport à la bague 105 et au support 104.A failure of the weight support means P, in particular a rupture of the cable 110, has the effect of rotating the ring 109 about the axis X-X '. This induces, as in the previous embodiment, a displacement of the ring 120 in the direction of the pawl 106, the ring blocking the pawl engaging in the toothing 189. As a result, the ring 108 and the tube 103 are immobilized in rotation relative to the ring 105 and the support 104.

Comme dans le premier mode de réalisation, un mécanisme d'entraînement en rotation de l'arbre 103 peut être prévu à l'extrémité opposée de cet arbre.As in the first embodiment, a mechanism for rotating the shaft 103 may be provided at the opposite end of this shaft.

Dans le troisième mode de réalisation de l'invention représenté à la figure 5, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 200. Le mécanisme 201 de ce mode de réalisation est prévu pour l'enroulement commandé d'un tablier T autour d'un axe X-X' qui est également l'axe de symétrie d'un arbre 203. Autour de l'axe X-X' sont disposés une bague 208, un anneau 209, un cliquet 206, une bague 220 et des ressorts 230. Un ressort de compensation 210 est bandé entre l'anneau 209 et une bague 211 également centrée sur l'axe X-X'.In the third embodiment of the invention shown in figure 5 , elements similar to those of the first embodiment carry identical references increased by 200. The mechanism 201 of this embodiment is provided for the controlled winding of an apron T about an axis XX 'which is also axis of symmetry of a shaft 203. Around the axis XX 'are arranged a ring 208, a ring 209, a pawl 206, a ring 220 and springs 230. A compensation spring 210 is banded between the ring 209 and a ring 211 also centered on the axis X-X '.

Ce mode de réalisation diffère des précédents en ce qu'un moteur électrique 275 est intégré au support 204 de l'arbre 203 et des éléments précédemment mentionnés. On note 276 l'arbre de sortie du moteur 275, cet arbre étant solidaire en rotation d'un disque 277 d'entraînement en rotation de l'arbre 203.This embodiment differs from the previous ones in that an electric motor 275 is integrated in the support 204 of the shaft 203 and previously mentioned elements. 276 is the output shaft of the motor 275, this shaft being integral in rotation with a disk 277 driving in rotation of the shaft 203.

Le boîtier externe 278 du moteur 275 a sensiblement la même géométrie que le support 4 du premier mode de réalisation.The outer housing 278 of the motor 275 has substantially the same geometry as the support 4 of the first embodiment.

Le cliquet 206 est articulé autour d'un axe 207 fixé sur une partie 205 monobloc avec le support 204.The pawl 206 is articulated about an axis 207 fixed on a part 205 integral with the support 204.

Ce mode de réalisation présente l'avantage particulier que l'ensemble des fonctions de motorisation, de compensation et de sécurité du mécanisme 201 sont regroupés dans un dispositif compact qui peut être pré-monté en usine, avant sa mise en place à l'intérieur d'une extrémité de l'arbre 203.This embodiment has the particular advantage that all the motorization, compensation and safety functions of the mechanism 201 are grouped together in a compact device that can be pre-assembled at the factory, before being placed inside. from one end of the shaft 203.

Dans le quatrième mode de réalisation de l'invention représenté à la figure 6, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 300. Le mécanisme 301 de ce mode de réalisation comprend un tube 303 d'enroulement commandé d'un tablier T autour d'un axe X-X' qui est également l'axe de symétrie du tube 303.In the fourth embodiment of the invention shown in figure 6 , the elements similar to those of the first embodiment carry identical references increased by 300. The mechanism 301 of this embodiment comprises a tube 303 of controlled winding of an apron T about an axis XX 'which is also the axis of symmetry of the tube 303.

Un arbre fixe 304 s'étend à l'intérieur de l'arbre 303 et une boîte à ressort(s) 400 est intercalée entre les arbres 303 et 304. Cette boîte à ressort(s) comprend un ressort de compensation 310 dont une extrémité 310a est solidaire d'une partie radiale interne 401 de la boîte 400 et dont l'autre extrémité 310b est solidaire d'un élément annulaire 309 monté, avec possibilité de rotation, sur une bague 308, elle-même solidaire de l'arbre 303. Comme précédemment, une bague 320 constitue un patin susceptible de freiner un cliquet 306 supporté par un axe mécanique 307 solidaire d'une cloison latérale 305 de la boîte à ressort 400, cette cloison latérale étant, en pratique, monobloc avec la partie 401 qui est fixe par rapport à l'arbre 304.A fixed shaft 304 extends inside the shaft 303 and a spring box (s) 400 is interposed between the shafts 303 and 304. This spring box (s) comprises a compensation spring 310 having one end 310a is secured to an inner radial portion 401 of the box 400 and the other end 310b is secured to an annular element 309 rotatably mounted on a ring 308, itself secured to the shaft 303. . As previously, a ring 320 constitutes a pad capable of braking a pawl 306 supported by a mechanical pin 307 secured to a side wall 305 of the spring box 400, this side wall being, in practice, integral with the portion 401 which is fixed relative to the shaft 304.

Des ressorts 330 permettent d'exercer sur la partie annulaire 309 un effort transmis par une nervure 394 à une gorge 324 de la bague 320 et tendant à plaquer la bague 320 contre le cliquet 306, comme représenté par la flèche d'effort F2. Lorsque le ressort 310 assure correctement sa fonction de compensation, l'effort exercé par les ressorts 330 est vaincu par le ressort 310, de sorte que la bague 320 est maintenue à distance du cliquet 306 en maintenant un jeu J, comme représenté par la flèche d'effort F.Springs 330 allow to exert on the annular part 309 a force transmitted by a rib 394 in a groove 324 of the ring 320 and tending to press the ring 320 against the pawl 306, as shown by the arrow of force F 2. When the spring 310 correctly performs its compensation function, the force exerted by the springs 330 is overcome by the spring 310, so that the ring 320 is kept at a distance from the pawl 306 while maintaining a clearance J, as represented by the arrow of effort F.

La géométrie des gorges 24 et des nervures 94 ou des éléments équivalents des second, troisième et quatrième modes de réalisation n'est pas nécessairement hélicoïdale.The geometry of the grooves 24 and ribs 94 or equivalent elements of the second, third and fourth embodiments is not necessarily helical.

Les bagues 108, 208 et 308 des second, troisième et quatrième modes de réalisation sont respectivement pourvues de dentures 189, 289 et 389 analogues à la denture 89 du premier mode de réalisation.The rings 108, 208 and 308 of the second, third and fourth embodiments are respectively provided with teeth 189, 289 and 389 similar to the teeth 89 of the first embodiment.

Dans le cinquième mode de réalisation de l'invention représenté aux figures 7 à 10, les éléments analogues à ceux du premier mode de réalisation porte des références identiques augmentées de 500. Dans ce mécanisme 501, un arbre d'enroulement 503 est prévu pour tourner autour d'un axe X-X' pour permettre l'enroulement commandé d'un tablier T. Une bague 505 est fixée par une console non représentée à la maçonnerie d'un bâtiment. Un cliquet 506 est solidaire, en rotation autour de l'axe X-X', de l'arbre 503 qui définit un logement 503a de réception du cliquet 506. Le cliquet 506 est pourvu de deux branches 561 et 562 et d'un corps central 563.In the fifth embodiment of the invention shown in Figures 7 to 10 , the elements similar to those of the first embodiment carry identical references increased by 500. In this mechanism 501, a winding shaft 503 is provided to rotate about an axis XX 'to allow the controlled winding of a apron T. A ring 505 is fixed by a console not shown to the masonry of a building. A pawl 506 is integral, in rotation about the axis X-X ', of the shaft 503 which defines a receiving housing 503a of the pawl 506. The pawl 506 is provided with two branches 561 and 562 and a body central 563.

La branche 561 est apte à coopérer avec une denture inclinée 589 ménagée à la périphérie de la bague 505.The branch 561 is able to cooperate with an inclined toothing 589 formed at the periphery of the ring 505.

Une lame-ressort 571 exerce sur la branche 562 un effort F3 destiné à induire un pivotement du cliquet 562 autour de son axe X1-X'1 d'articulation sur l'arbre 503 dans le sens de la flèche F4 à la figure 10, ce qui a pour effet d'éloigner la branche 561 de la denture 589.A leaf spring 571 exerts on the branch 562 a force F 3 intended to induce a pivoting of the pawl 562 about its axis X 1 -X ' 1 of articulation on the shaft 503 in the direction of the arrow F 4 to the figure 10 , which has the effect of moving the branch 561 away from the toothing 589.

Les axes X-X' et X1-X'1 sont globalement parallèles.The axes XX 'and X 1 -X' 1 are generally parallel.

Les branches 561 et 562 sont globalement équilibrées, ce qui permet au cliquet 506 de fonctionner efficacement, comme évoqué en référence aux cliquets des modes de réalisation précédents, indépendamment de l'orientation de l'arbre 503 autour de l'axe X-X'.The branches 561 and 562 are generally balanced, which allows the pawl 506 to function effectively, as evoked with reference to the ratchets of the previous embodiments, regardless of the orientation of the shaft 503 about the X-X axis. .

Un ressort de compensation 510 est prévu dans l'installation et est bloqué sur une bague 509, elle-même montée à pivotement autour de la bague 505. La bague 509 est pourvue d'une extension radiale 591 destinée à pénétrer dans une encoche 503b ménagée dans l'arbre 503, un ressort 530 étant intercalé entre l'extension 591 et l'un des côté de l'encoche 503b. Ce ressort exerce sur l'extension 591 un effort élastique F5 orienté vers la gauche à la figure 8.A compensation spring 510 is provided in the installation and is locked on a ring 509, itself mounted to pivot about the ring 505. The ring 509 is provided with a radial extension 591 intended to penetrate into a notch 503b arranged in the shaft 503, a spring 530 being interposed between the extension 591 and one side of the notch 503b. This spring exerts on the extension 591 an elastic force F 5 oriented towards the left to the figure 8 .

En cas de rupture du ressort 510, l'effort F5 a pour effet de déplacer la bague 509 par rapport à l'arbre 503 vers la gauche à la figure 8 et vers le haut à la figure 9, ce qui a pour effet d'amener une surface 592 ménagée sur la bague 509 en appui contre une doigt d'extrémité 564 du cliquet 506.In case of rupture of the spring 510, the force F 5 has the effect of moving the ring 509 relative to the shaft 503 to the left at the figure 8 and up to the figure 9 , which has the effect of bringing a surface 592 formed on the ring 509 bearing against an end finger 564 of the pawl 506.

La surface 592 est inclinée par rapport à l'axe X1-X'1 et par rapport à l'axe X-X', de telle sorte que le déplacement de la bague 509 sous l'effort F5, déplacement qui est représenté par la flèche F6 à la figure 9, a pour effet de repousser le doigt 564 et l'ensemble du cliquet 506 dans le sens de la flèche F7.The surface 592 is inclined with respect to the axis X 1 -X ' 1 and with respect to the axis X-X', so that the displacement of the ring 509 under the force F 5 , displacement which is represented by the arrow F 6 at the figure 9 , has the effect of pushing the finger 564 and the entire pawl 506 in the direction of the arrow F 7 .

Ceci a pour effet d'amener la face arrière 565 du cliquet 506 au contact d'une pastille de friction 572. Le contact entre la face 565 et la pastille 572 freine les oscillations du cliquet 506 autour de l'axe X1-X'1, de sorte que l'on obtient un blocage rapide et efficace du cliquet 506 par rapport à la denture 589, c'est-à-dire une immobilisation en rotation de l'arbre 503.This has the effect of bringing the rear face 565 of the pawl 506 into contact with a friction pad 572. The contact between the face 565 and the pellet 572 brakes the oscillations of the pawl 506 about the axis X 1 -X ' 1 , so that one obtains a quick and effective locking pawl 506 relative to the toothing 589, that is to say immobilization in rotation of the shaft 503.

Selon une variante non représentée de l'invention, la pastille 572 pourrait être montée sur le cliquet 506, auquel cas elle serait déplacée avec le cliquet en direction d'une face latérale 503c du logement 503.According to a variant not shown of the invention, the wafer 572 could be mounted on the pawl 506, in which case it is moved with the pawl in the direction of a side face 503 of the housing 503 c.

Dans le sixième mode de l'invention représenté aux figures 11 à 13, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 600. Le mécanisme 601 de ce mode de réalisation diffère du précédent en ce que, en cas de rupture du ressort de compensation 610, la bague 609 solidaire du ressort de compensation 610 agit par son extension 691 directement sur un doigt 666 du cliquet 606, ceci sous l'effet d'un effort F5 exercé par un ressort 630.In the sixth embodiment of the invention shown in Figures 11 to 13 , elements similar to those of the first embodiment have identical references increased by 600. The mechanism 601 of this embodiment differs from the previous in that, in case of rupture of the compensation spring 610, the ring 609 secured to the spring 610 compensates by its extension 691 directly on a finger 666 of the pawl 606, this under the effect of a force F 5 exerted by a spring 630.

Sous l'effet de l'effort exercé par une face latérale 692 de l'extension 691, le cliquet 606 bascule dans le sens de la flèche F8 à la figure 12, ce qui a pour effet d'amener sa branche 661 en engagement avec une denture 689 prévue sur une bague 605 fixe par rapport à la structure du bâtiment et autour de laquelle est montée la bague 609.Under the effect of the force exerted by a side face 692 of the extension 691, the pawl 606 switches in the direction of the arrow F 8 to the figure 12 , which has the effect of bringing its branch 661 in engagement with a set of teeth 689 provided on a fixed ring 605 with respect to the structure of the building and around which the ring 609 is mounted.

Comme précédemment, le cliquet 606 est reçu dans un logement 603a ménagé dans l'arbre 603 d'enroulement du tablier T.As previously, the pawl 606 is received in a housing 603a formed in the winding shaft 603 of the deck T.

Un ressort 671 exerce sur le cliquet 606 un effort élastique F3 d'éloignement de la branche 661 par rapport à la denture 689.A spring 671 exerts on the pawl 606 an elastic force F 3 away from the branch 661 with respect to the toothing 689.

Dans les cinquième et sixième mode de réalisation, les logements de réception du cliquet peuvent être obtenus par assemblage de plusieurs pièces constituant ensemble l'arbre 503 ou 603.In the fifth and sixth embodiments, the receiving housings of the ratchet can be obtained by assembly of several parts together forming the shaft 503 or 603.

Dans le septième mode de réalisation de l'invention représenté aux figures 14 à 16, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 700. Le mécanisme 701 de ce mode de réalisation comprend également une bague 705 fixe par rapport à la structure d'un bâtiment ainsi qu'une bague 709 montée à pivotement autour de la bague 705 et solidaire en rotation d'un ressort de compensation 710. Un arbre 703 est prévu pour l'enroulement commandé d'un tablier T par sa rotation autour d'un axe globalement horizontal X-X'.In the seventh embodiment of the invention shown in Figures 14 to 16 , the elements similar to those of the first embodiment bear identical references increased by 700. The mechanism 701 of this embodiment also comprises a ring 705 fixed relative to the structure of a building and a ring 709 mounted to pivoting about the ring 705 and rotationally integral with a compensation spring 710. A shaft 703 is provided for the controlled winding of an apron T by its rotation about a generally horizontal axis X-X '.

Plusieurs cliquets oscillants sont prévus dans ce dispositif à la façon décrite dans EP-A-0 671 543 ces cliquets, dont un seul est représenté sur les figures avec la référence 706, sont de forme cylindrique, à section circulaire et à génératrice rectiligne et sont susceptibles de mouvement d'oscillations radiales par rapport à l'axe X-X', dans le sens de la double flèche F9 à la figure 14.Several oscillating pawls are provided in this device in the manner described in EP-A-0 671 543 these pawls, only one of which is shown in the figures with the reference 706, are of cylindrical shape, circular section and straight generatrix and are capable of movement of radial oscillations with respect to the axis X-X ', in the direction of the double arrow F 9 to the figure 14 .

Les cliquets 706 sont prévus pour coopérer avec une denture 789 prévue sur la bague 705. Une denture complémentaire 790 est associée à la denture 789 pour déplacer périodiquement les cliquets 706 en direction de la denture 789, lors de la rotation de l'arbre 703.Pawls 706 are provided to cooperate with a toothing 789 provided on the ring 705. A complementary toothing 790 is associated with the toothing 789 for periodically moving the pawls 706 towards the toothing 789 during the rotation of the shaft 703.

Une extension 703d est prévue sur l'arbre 703 pour s'étendre à l'intérieur d'un logement 793 ménagé dans la bague 709 et à l'intérieur duquel est également disposé un ressort 730 exerçant sur l'extension 703d un effort F5 dirigé vers la droite à la figure 15 et vaincu par le couple exercé par le ressort 710 en fonctionnement normal de l'installation. En cas de rupture du ressort 710, l'effort F5 déplace l'extension 703d à l'intérieur du logement 793, ce qui a pour effet de déplacer en rotation la bague 709 par rapport à l'arbre 703, comme représenté par la flèche F6 à la figure 16. Une encoche radiale 794 est prévue dans la bague 709 alors qu'une navette 780 est installée dans un logement 703e prévu dans une pièce 703' solidaire de l'arbre 703. Les faces latérales 794a et 794b de l'encoche 794 sont évasées, ce qui permet, lors du déplacement F6, d'exercer sur la navette 780 un effort F10 centrifuge par rapport à l'axe X-X' et ayant pour effet de déplacer l'extrémité 780a de la navette 780 radialement vers l'extérieur, ceci repoussant le cliquet 706 radialement dans le sens de la flèche F11 et empêchant une nouvelle introduction d'un cliquet 706 dans le logement 703f normalement prévu pour celui-ci dans l'arbre 703. Ainsi, le cliquet 706 vient en engagement avec la denture 789 et le mécanisme est bloqué en rotation.An extension 703 d is provided on the shaft 703 to extend within a housing 793 formed in the ring 709 and inside which is disposed a spring 730 acting on the extension 703 of an effort F 5 directed to the right at the figure 15 and overcome by the torque exerted by the spring 710 in normal operation of the installation. In case of breaking of the spring 710, the force F 5 moves the extension 703 from within the housing 793, which has the effect of rotationally moving the ring 709 relative to the shaft 703, as shown by the arrow F 6 at the figure 16 . A radial notch 794 is provided in the ring 709 while a shuttle 780 is installed in a housing 703 e provided in a part 703 'integral with the shaft 703. The side faces 794a and 794b of the notch 794 are flared, which makes it possible, during the movement F 6 , to exert on the shuttle 780 a centrifugal force F 10 with respect to the axis XX 'and having the effect of moving the end 780a of the shuttle 780 radially outwards, this pushing the pawl 706 radially in the direction of the arrow F 11 and preventing a new introduction of a pawl 706 in the housing 703 f normally provided for it in the shaft 703. Thus, the pawl 706 comes into engagement with the teeth 789 and the mechanism is locked in rotation.

En pratique, une navette 780 est prévue sous chaque logement 703f. La bague 709 comporte, par ailleurs, plusieurs encoches radiales 794 correspondant aux différentes navettes 780. En outre, la dent de la denture 789 visible à la figure 16 est bordée par une partie 789a de rayon de courbure relativement petit puis par une partie 789b représentée partiellement en traits mixtes sur cette figure, cette partie se rapprochant de la bague 709 en s'éloignant de la partie 789a, de telle sorte que les cliquets disposés en regard de la partie 789b ne peuvent pas sortir de leurs logements respectifs, aucun débattement radial n'étant possible lorsque la partie 789a jouxte la bague 709. C'est pourquoi, les deux extrémités 780a et 180b de la navette 780 sont reliées par une lame 780c formant ressort. En effet, en cas de rotation de la bague 709 par rapport à l'arbre 703, toutes les navettes sont sollicitées radialement par les côtés des encoches 794 et seule celle qui est disposée au niveau du cliquet 706 en regard de la partie 789a peut effectivement être déplacée. Les autres navettes sont comprimées, par un rapprochement de leurs extrémités 780a et 780b à l'encontre de l'effort généré par le ressort 780c.In practice, a shuttle 780 is provided under each housing 703 f . The ring 709 has, moreover, several radial notches 794 corresponding to the different shuttles 780. In addition, the tooth of the toothing 789 visible at the figure 16 is bordered by a portion 789 of a relatively small radius of curvature followed by a portion 789 b partially shown in phantom in this Figure, this part is closer to the ring 709 away from the portion 789 a, so that the pawls disposed opposite part 789 b can not leave their respective housings, no radial movement being possible when the portion 789a is adjacent to the ring 709. Therefore, the two ends 780 a and 180 b of the shuttle 780 are connected by a 780 c forming a spring blade. Indeed, in case of rotation of the ring 709 with respect to the shaft 703, all the shuttles are stressed radially by the sides of the notches 794 and only that which is arranged at the pawl 706 opposite the part 789 a can actually be moved. The other shuttles are compressed, by a reconciliation of their ends 780 a and 780 b against the force generated by the spring 780 c.

L'invention n'est pas limitée aux modes de réalisation décrits et les caractéristiques techniques de ceux-ci peuvent, en particulier, être combinées.The invention is not limited to the embodiments described and the technical characteristics thereof can, in particular, be combined.

L'invention a été décrite avec un tablier T enroulable sélectivement autour d'un arbre pour l'obturation d'une ouverture O. Elle est cependant applicable quelle que soit la nature du moyen d'obturation utilisé, qui peut en particulier être un panneau rigide ou semi-rigide commandé grâce à des sangles elles-mêmes enroulées sur un arbre.The invention has been described with an apron T selectively windable around a shaft for closing an opening O. It is however applicable regardless of the nature of the closure means used, which may in particular be a panel rigid or semi-rigid controlled by straps themselves wound on a tree.

Claims (26)

  1. Safety device for a closing or sun-protection installation comprising a mechanism for driving a screen body (T) for closing an opening (O), said mechanism including a shaft (3; 103; 203; 303; 503; 603; 703) and an element (8; 108; 208; 308; 505; 605; 705) provided with a toothing (89; 189; 289; 389; 589; 689; 789) adapted to cooperate with at least one catch (6; 106; 206; 306; 506; 606) or with a cylindrical member (706) which oscillates during rotational movement of said shaft and adapted to immobilize said shaft in rotation, characterized in that it comprises means (20; 120; 220; 320; 572; 592; 692; 794) for braking or blocking said catch (6; 106; 206; 306; 506; 606) or said cylindrical member (706) in its oscillatory movement during an unwinding movement of the screen body (T), said braking or blocking means being controlled by means (8, 9, 30; 108, 109, 130; 208, 209, 230; 308, 309, 330; 509; 709; 709) for detecting a rupture or a failure of a spring or a cable (10; 110; 210; 310; 510; 610; 710) for compensating the torque exerted on said shaft (3; 103; 203; 303; 503; 603; 703) by said screen body (T).
  2. Device according to Claim 1, characterized in that said braking or blocking means comprise a shoe (20; 120; 220; 320) mobile axially (X-X') with respect to said shaft (3; 103; 203; 303) and adapted to come into abutment (F2) against said catch.
  3. Device according to Claim 2, characterized in that said shoe bears at least one element in relief (24; 124; 324) adapted to cooperate with a corresponding element in relief (94; 194; 394) provided on a member (9; 109; 209; 309) fast in rotation with said compensating means (10; 110; 210; 310), for controlling the axial position of said shoe with respect to said catch (6; 106; 206; 306).
  4. Device according to Claim 3, characterized in that said elements in relief provided respectively on said member (9; 109; 209; 309) and said shoe (20; 120; 220; 320) comprise ribs (94; 194; 394) and grooves (24; 124; 324) adapted to engage in one another.
  5. Device according to one of Claims 3 or 4, characterized in that at least certain (24; 124; 324) of said elements in relief are formed on tongues (22; 122) extending through openings (87) made in said element (8; 108; 208; 308) fast with said shaft (3; 103; 203; 303).
  6. Device according to one of Claims 3 to 5, characterized in that said shoe (20; 120; 220; 320) and said member (9; 109; 209; 309) are disposed axially on either side of said element (8; 108; 208; 308) and kinematically connected by the cooperation of said elements in relief (24, 94; 124, 194; 324, 394).
  7. Device according to one of Claims 2 to 6, characterized in that it comprises means (30; 130; 230; 330) for applying an elastic effort (C2, F2) of displacement of said shoe (20; 120; 220; 320) towards said catch (6; 106; 206; 306).
  8. Device according to Claims 3 and 7, characterize in that said member (9; 109; 209; 309) and said element (8; 108; 208; 308) are provided with ribs (88, 95) between which at least one compression spring (30; 130; 230; 330) is disposed, exerting a rotational torque (C2) of said member with respect to said element.
  9. Device according to one of Claims 2 to 8, characterized in that said shoe is a ring (20; 120; 220; 320) disposed inside said shaft (3; 103; 203; 303) and around an element forming support (4; 104; 204; 304) and/or motorization assemble (275) for said mechanism (1; 101; 201,301).
  10. Device according to Claim 1, characterized in that said braking or blocking means (592; 692; 794) are adapted to displace (F7, F11) or tip (F8) said catch (506; 606; 706) towards a braked or blocked position.
  11. Device according to Claim 10, characterized in that it comprises a friction pellet (572), mounted on said catch (506) or thereopposite, and intended to receive said catch in abutment or to come into contact with a bearing surface (503c).
  12. Device according to one of Clamis 10 or 11, characterized in that said braking or blocking means comprise a surface (592; 692; 794a, 794b) formed on a part (509; 609; 709) fast in rotation with said compensating means (510; 610; 710) and intended to exert, directly or indirectly, an effort of displacement (F7, F11) or of tipping (F8) on said catch (506; 606; 706).
  13. Device according to Claim 12, characterized in that said surface (592) extends in a direction substantially inclined with respect to an axis of rotation (X-X') of said shaft (503), said surface forming a ramp adapted to displace (F7) said catch towards a braked or blocked position.
  14. Device according to Claim 12, characterized in that said surface (692) is substantially radial with respect to an axis of rotation (X-X') of said shaft (603), said surface being adapted to cooperate with a finger (666) of said catch in order to tip it (F8) about its axis of oscillation (X1-X1'), towards a braked or blocked position by engagement with said toothing (689).
  15. Device according to one of Calims 13 or 14, characterized in that it comprises means (571; 671) for returning said catch (506; 606) opposite said braked or blocked position.
  16. Device according to one of Claims 10 to 12, characterized in that said braking or blocking means comprise at least one shuttle (780) adapted to displace (F11) said catch (706) in the direction of a fixed blocking toothing (789).
  17. Device according to Claim 16, characterized in that said shuttle is provided with an elastic means (780c) for adjusting its length, taken between a bearing surface (794) and said catch (706).
  18. Device according to one of Claims 10 to 17, characterized in that it comprises means (530; 630; 730) for elastic return (F3) of said braking or blocking means (592; 692; 794) towards a position in which they exert on said catch (506; 606; 706) an effort of displacement or of tipping towards said braked or blocked position.
  19. Device according to one of the preceding Claims, characterized in that said catch (6; 106; 206; 306) is mounted on a fixed element of the installation.
  20. Device according to one of Claims 1 to 18, characterized in that said catch (506; 606; 706) is mounted on and intended to be driven in rotation by an element fast in rotation with said shaft (503; 603; 703).
  21. Device according to one of the preceding Claims, characterized in that said braking or blocking means (20; 120; 220; 320), said detection means (8, 9, 30; 108, 109, 130; 208, 209, 230) and said compensating means (10; 110; 210; 310) are arranged around an element forming support (4; 104; 204; 304) and/or motorization assembly (275) for said mechanism (1; 101 ; 201 ; 301).
  22. Device according to one of the preceding Claims, characterized in that said compensating means is a spring (10) tightened around an end support (4) of said shaft (3), between a part (11) fixed with respect to said support and an annular member (9) adapted to rotate about said support by being driven by said shaft (3), said catch (6) being mounted to pivot about a pin (7) fixed with respect to said support.
  23. Device according to one of Claims 1 to 22, characterized in that said compensating means is a spring (10) tightened by a weight (P) and fast with an annular member (109) surrounding an end support (104) of said shaft (103), said catch (160) being mounted to pivot about a pin (107) fixed with respect to said support.
  24. Device according to one of Claims 1 to 22, characterized in that said compensating means is a spring (210) tightened around a motorization assembly (204, 275) disposed inside said shaft (203), said catch (206) being mounted to pivot about a pin (207) fixed with respect to a part (204, 205) forming end support of said shaft.
  25. Device according to one of Claims 1 to 22, characterized in that said compensating means is a spring (310) integrated in a spring box (400) disposed inside said shaft (303), between the latter and a fixe shaft (304), said spring box also containing said catch (306), said braking means (320) and said detection means (308, 309, 330).
  26. Mechanism (1; 101; 201; 301) for manoeuvring a closing or sun protection installation comprising a safety device (5-97; 105-194; 205-278; 305-401) according to one of the preceding Claims.
EP03727616.9A 2002-03-28 2003-03-27 Safety device and mechanism comprising one such device, used to manoeuvre a closing or sun protection installation Expired - Lifetime EP1488070B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0203942 2002-03-28
FR0203942A FR2837866B1 (en) 2002-03-28 2002-03-28 SAFETY DEVICE AND MANUFACTURING MECHANISM OF A CLOSURE OR SOLAR PROTECTION INSTALLATION INCORPORATING SUCH A DEVICE
PCT/FR2003/000971 WO2003083246A1 (en) 2002-03-28 2003-03-27 Safety device and mechanism comprising one such device, used to manoeuvre a closing or sun protection installation

Publications (2)

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EP1488070A1 EP1488070A1 (en) 2004-12-22
EP1488070B1 true EP1488070B1 (en) 2014-04-30

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EP03727616.9A Expired - Lifetime EP1488070B1 (en) 2002-03-28 2003-03-27 Safety device and mechanism comprising one such device, used to manoeuvre a closing or sun protection installation

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US (1) US7600553B2 (en)
EP (1) EP1488070B1 (en)
JP (1) JP4549065B2 (en)
AU (1) AU2003233854A1 (en)
FR (1) FR2837866B1 (en)
WO (1) WO2003083246A1 (en)

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JP4549065B2 (en) 2010-09-22
US7600553B2 (en) 2009-10-13
FR2837866B1 (en) 2005-09-23
FR2837866A1 (en) 2003-10-03
US20050109473A1 (en) 2005-05-26
EP1488070A1 (en) 2004-12-22
AU2003233854A1 (en) 2003-10-13
WO2003083246A1 (en) 2003-10-09
JP2005521817A (en) 2005-07-21

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