EP0922832A1 - Catching device for rollable closing devices - Google Patents

Catching device for rollable closing devices Download PDF

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Publication number
EP0922832A1
EP0922832A1 EP98402388A EP98402388A EP0922832A1 EP 0922832 A1 EP0922832 A1 EP 0922832A1 EP 98402388 A EP98402388 A EP 98402388A EP 98402388 A EP98402388 A EP 98402388A EP 0922832 A1 EP0922832 A1 EP 0922832A1
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EP
European Patent Office
Prior art keywords
static
blocking
coil
spring
restraint
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EP98402388A
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German (de)
French (fr)
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EP0922832B1 (en
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Michel Javey
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Individual
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Individual
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    • 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
    • E06B9/60—Spring drums operated only by closure members
    • 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

Definitions

  • the present invention relates to a device for retainer for a roll-up closure with a flexible structure deck, suitable for being wrapped around a substantially cylindrical and mounted support system movable in rotation around a fixed shaft arranged generally above an opening to be condemned.
  • the invention finds an application particularly advantageous, but not exclusive, in the area of vertical blanking closures equipping accesses to industrial buildings and commercial. We think here for example of curtains metallic garages or storefront grilles of shops.
  • curtain or apron mean more generally any means capable of closing an opening, that is to say a plate, an assembly of blades, a grid, etc.
  • the structural flexibility needed to the winding of this organ can come directly of the intrinsic nature of the material constituting it and / or joints connecting the different parts the component.
  • the winding of the deck is traditionally carried out around at least one coil mounted mobile in rotation on said fixed shaft.
  • Each coil is also connected to the fixed shaft by means of a spring balance type, wound inside even of said coil.
  • This elastic return means is responsible for at least partially counterbalancing the weight of the deck, restoring during the phase energy stored as a couple during the closing phase.
  • an apron has a relatively heavy important, generally ranging from several tens to several hundred kilograms. Combined with a high fall speed, this mass constitutes a real danger to users.
  • French patent application 2,739,656 describes however several restraint systems likely to fulfill this function.
  • the principle is the same for each mode of realization described. It basically consists of positively couple to the fixed shaft, the coil whose spring fails, after angular displacement given of said coil compared to means of specific locking. This movement, controlled by a return element mounted between the coil and the means lock, will then allow these means of interlock to control the movement of a piece of blocking to a fixed ratchet wheel forming a stop, thus achieving the immobilization of the apron relative to the shaft of the roll-up closure.
  • the technical problem to be solved by the object of the present invention is to provide a retainer for roll-up closure with an apron capable of being wrapped around at minus a coil mounted movable in rotation around a fixed shaft, each voice coil being connected to the shaft fixed by means of a compensation spring spiral type, a retaining device being associated to each compensation spring in order to block the lowering of the bulkhead in the event of failure of said spring compensation; retainer that would allow avoid the problems of the state of the art by offering in particular great reliability as well as low cost compared to that of closing at secure, both in terms of the cost price of restraint proper as that of its adaptation to said closure.
  • each compensation spring is integral a blocking element mounted movable on the move the corresponding coil, the blocking element being able to move towards a static organ integral with the fixed shaft in order to cooperate by blocking with a part forming a stop of said static member, said blocking element being kept away from the static organ by the restoring force exerted by the compensation spring.
  • the invention as thus defined presents the advantage of being extremely simple in design since this security system does require the cooperation of only two pieces, namely one movable blocking element and a static member.
  • the adaptation of such retainer requires only modifications minor at the level of the intrinsic structure of the roll closure. Indeed, these transformations are essentially limited to simply joining together the outer end of the balance spring a blocking element mounted movable on the move the corresponding coil. This in no way calls into question causes the classic closing mechanism, whether either from a structural and / or functional point of view. For all these reasons, the object restraint of the present invention enjoys reliability increased as well as a cost price particularly low compared to equivalent systems already known.
  • the spring compensation is indeed the only commanding piece immobilization or displacement of the element of blocking with respect to the coil. In other words, it ensures only the immobilization of the blocking element in passive position, it also controls only the displacement towards the static organ, and finally it alone guarantees that it remains in the active position; the passive and active positions being those in which said blocking element and said member static are remote and contact respectively one of the other.
  • the position of the locking element with respect to the static organ therefore depends only and above all directly from the state of the compensation spring.
  • the spring compensation is stretched permanently due to a excess winding of the turn constituting it, and this whatever the position of the deck.
  • the force of recall is only felt at its outer end. It is indeed the only one likely to move, for the double reason that it is united to the locking element mounted to move on the coil on the one hand, and that said coil is itself rotatably mounted around the fixed shaft on the other hand.
  • the only return force thus allows advantageously hold the locking element in passive position, i.e. away from the organ static. This balance also remains perfectly stable as long as the compensation spring retains its original mechanical properties.
  • the volume it occupies inside the coil is very much lower than the one it has at rest, that is to say when it is not subject to any winding stress. Also, after rupture, it will tend to naturally return to shape original. In case of failure, it occurs by therefore a substantially radial expansion of the compensation spring which tends to deviate as far as possible of the axis around which it was wound. This movement continues until spring deployment be stopped, due to the limited space existing at inside the coil.
  • the element of blocking When it is no longer subjected to the restoring force exerted by the compensating spring, the element of blocking is therefore free to leave its position passive and move relative to the coil on which it is mounted movable towards the organ static. This obviously implies that he can be trained on the move through a moving organ. This is precisely what produced when the compensating spring breaks then comes alive with the double movement of radial extension and rotation previously described.
  • the blocking element secured to the outer end of the spring compensation, is then moved to the position active in which it cooperates by blocking with the static organ.
  • the locking element is kept in contact with the static organ thanks to the fact that the radial expansion of the compensation spring is limited by the low volume available inside the coil, and that said spring comes to block very quickly against the apron portion surrounding said coil, consequently immobilizing said blocking element.
  • the retainer includes guide means able to direct movement of the blocking member towards the static organ, in case of rupture of the compensation spring; the planned displacement taking place between the passive position in which the blocking element is at a distance from the member static and the active position in which said blocking element is in contact with said member static.
  • the compensation spring is animated by a complex movement resulting substantially from the combination of radial expansion and rotation in the winding direction of the coil. Also, it is particularly advantageous to control the moving its outer end so that the element movable blocking device is safely and safely steered effective towards the static organ.
  • the goal is here above all to avoid the risks of catching the compensation spring and / or blocking element with any element, present inside the coil, other than the static member. Means of adequately arranged guides allow advantageously achieve this goal.
  • At at least a portion of the blocking element has a flexible structure allowing it to deform and thus to temporarily disengage from the organ static when said blocking element is in active position.
  • This advantageous feature allows the device to be temporarily unlocked detention. Unlocking can be performed manually or through a more mechanism or less complex.
  • Figures 1 and 2 show, in section partial transverse, a retaining device according to a first embodiment of the invention.
  • Figure 3 is a perspective view in section partial of the retainer illustrated in the figures 1 and 2.
  • Figures 4 and 5 are sectional views transverse, illustrating a retaining device according to a second embodiment of the invention.
  • closure 1 with vertical erasure illustrated in Figures 1 to 3 is of the fixed shaft type. So classic, it has a support system 2 around from which a sliding mounted apron 3 is wound up between vertical slides 4, 5.
  • the support system 2 consists of a series of compensating coils 6 with spring such as that visible on FIGS. 1 to 3. Each of them is mounted mobile in rotation around the same fixed shaft 7, via bearings not shown.
  • the coils 6 are further connected transversely to each other by two blades of reinforcement 8, 9, joined in opposition to the respective circumferences of said coils 6.
  • the apron 3 is made up of a plurality of articulated blades; the one at the end upper being secured to the reinforcing blade 9 by screws 11.
  • each coil compensator 6 is provided with a spiral spring 12 rolled up on itself between the two side flanges 13, 14.
  • the inner end 15 of the spring 12 is all also conventionally secured to shaft 7 by means a fixing screw 16.
  • its end external 17 is not directly attached to the coil 6 but secured to a blocking element 20 mounted movable in displacement on said coil 6, so as to what in case of failure of the compensation spring said blocking element 20 can cooperate by blocking with a static member 30 secured to the fixed shaft 7.
  • guide 40 formed here by two oblong slots 41, 42 arranged opposite each other on the two flanges 13, 14 of the coil 6 and in a direction substantially tangential to the axis of rotation of said coil 6.
  • the two long sides 43, 44 of each oblong light 41, 42 are able to cooperate by sliding with at least a portion of section 21 of the locking element 20.
  • the so-called rear ends 45 and before 46 of each of these lights 41, 42 delimit the positions respectively passive and active of said blocking element 20 by relation to the static organ 30.
  • the element of blocking 20 is composed of a bar 22 of section rectangular on which is fixed transversely a curved blade 23 forming a hook.
  • This blade 23 constitutes the active part 24 of the blocking element 20 because it is she who is intended to cooperate by blocking with a part forming an abutment of the member static 30.
  • the bar 22 plays a role while as essential when participating in guiding the blade 23 from the passive position to the active position. To this end, each of its ends is able to slide freely in one of the two lights 41, 42 whose height, i.e. the distance between the two long sides 43, 44, is complementary to the thickness of said strip 22 in order to guarantee the desired guidance accuracy.
  • the active part 24 of the locking element 20 is arranged outside the coil 6 in order to come to position near a static organ 30 external.
  • the organ static 30 consists of a fixed gear 31 on the fixed shaft 7 by means of screws 32, 33 or any other means of attachment.
  • Each tooth 34 has here a triangular point profile whose edge 35, extending radially from the center of the wheel, advantageously constitutes a part forming stop of the static member 30.
  • the static member 30 as well as the locking element 20 and the means of guide 40 are dimensioned and arranged so that that in passive and active positions, said organ static 30 and said blocking element 20 are respectively at a distance and in contact with one of the other.
  • Figure 1 shows a retainer in which the locking element 20 is in the passive position.
  • the latter is indeed immobilized at a distance of the static member 30 under the action of the spring of compensation 12, so that the coil 6 is suitable for freely rotate around the fixed shaft 7.
  • the deck 3 can therefore be operated just as easily freely as long as the retainer does not come into operation.
  • the immobilization of the locking element 20 in passive position comes from the causes the bar 22 to be held in abutment against the rear ends 45 of the guide lights 41, 42, by the restoring force exerted by the spring of compensation 12 of the hairspring type.
  • the active part 24 of the locking element 20 extends vicinity of the periphery of the toothed wheel 31 but is in no way able to get in touch with any part 35 forming an abutment of the member static 30.
  • the curved blade 23 forming a hook will sooner or later come cling to one of the many spaced 34 teeth regularly around the circumference of wheel 31. Once the end of the hook against the side 35 forming a stop for one of these teeth 34, the coil 6 to which the locking element 20 is secured is then stopped in its rotation so that the fall of the apron 3 is also stopped.
  • the locking element 20 is thus found in active position as shown explicitly in the figure 2.
  • the bar 22 is held in abutment against the front ends 46 of the guide lights 41, 42 in due to the fact that the compensation spring 12, to which it is attached, is itself immobilized at inside the coil 6. Indeed, like its radial expansion is limited due to lack of space sufficient, the compensating spring 12 goes through therefore exert such pressure, against the portion of the deck 3 surrounding the coil 6, that it will somehow get stuck and therefore unable to move.
  • the active part 24 of the locking element 20 is advantageously provided with a flexible structure allowing to deform. So although one of his ends is fixed since secured to the bar 22 perfectly still at this particular moment, its other end 25 called free is able to deviate from or be removed from the static member 30 to allow any rotation of the coil and thus unlocking the retainer. he is then theoretically possible to raise or lower the apron 3.
  • the triangular profile of the teeth 34 formed on the periphery of the wheel 31 is such as to offer only an edge 35 forming a stop, that is to say one extending radially from the center of said toothed wheel 31.
  • the other edge being bevelled, it is unable to cooperate by blocking with the active part 24 of the locking element 20.
  • the rotation of the coil 6 cannot be stopped only in one direction: that corresponding precisely when the deck 3 falls.
  • the locking element 20 has a structure flexible enough to allow it to deform.
  • the active part 24 of the locking element 20 is advantageously constituted by a leaf spring. Flexibility natural element will allow its end free 25 to follow the contour of the toothed wheel 31, in traversing the succession of broken lines that constitutes the series of triangular teeth 34. As the free end 25 will only meet in this direction no roughness forming a stop, nothing will prevent the rotation of the coil 6 with respect to the static member 30.
  • the coil 6 will then come to a standstill at first, then turn very slightly in the direction of unwinding until the free end 25 of the blade 23 bears against the edge 35 forming a stop one of the teeth 34 of the wheel 31. The apron 3 is then again blocked despite its own weight which tends to make it fall.
  • a blocking element 50 mobile able to cooperate by blocking with a member static 60 fixed.
  • the outer end 17 of the compensation spring 12 is integral with the element blocking 50 so as to be kept away from the static member 60 when said spring of compensation 12 is in perfect working order.
  • movement of the locking element 50 in the direction of the static member 60 is advantageously provided by guide means 70 consisting of two lights oblong 71 arranged opposite on the two flanges 81 of the coil 80.
  • the blocking element 50 here consists only of a simple bar 51 movable mounted moving through the coil 80, moreover in a substantially radial direction relative to the center of said coil 80.
  • the means of guide 70 are indeed oriented either tangentially but radially.
  • Static organ 60 is also different since it comes under the shape of a crown 61 with teeth interior.
  • the spring compensation 12 is conventionally wound on itself between the flanges 81 of the coil 80. Its ends internal 15 and external 17 are joined respectively to the fixed shaft 7 and to the element of blocking 50. Subject to significant restoring force exerted by the compensating spring 12, the element of blocking 50 is pressed against the rear ends 72 guide lights 71 so it's out of contact of the crown gear 61.
  • the coil 80 is by therefore able to rotate around the fixed shaft 7 in order to raise or lower the apron 3.
  • the blocking bar 51 has a length much greater than the thickness of the coil 80 and that most of this surplus is spread perpendicular to the plane in which the toothed crown 61, said bar 51 itself comes in contact with said crown 61 when the position passive is reached.
  • the blocking is then carried out similar to the first embodiment previously described, so that the fall of the deck 3 is still there.
  • the bar 51 engages first place between two consecutive teeth 62.
  • the bar 51 will slide along the beveled edge 64 of one of the teeth 62, edge 64 with which she stays perfectly in contact under the action of the compensation spring 12. This relative displacement ends when the bar 51 comes into abutment against the radial edge 63 of the other tooth 62, making thus blocking.
  • the blocking element 50 is capable of deform and therefore it presents a flexible structure. Only the specific shape of the teeth 62 formed on the crown 61 appears essential, in combination with the radial mobility of the bar 51.
  • each tooth 62 in fact allows the crown 61 to not have no part forming a stop when the coil 80 is rotated in the winding direction.
  • the locking element 50 is potentially able to be moved back if we exerts on it a sufficient push, that is to say of intensity greater than the voltage generated by the compensation spring 12.
  • the bar 51 will be able to slide along from each beveled edge 64 while moving away radially towards the center of the coil 80. A once this operation is completed, the bar 51 can to abut against the radial edge 63 of one of the teeth 62 in order to again lock the fall of the apron 3.
  • the invention is not limited to particular embodiments which have been described in title of preferred examples. It also includes all variants remaining within the scope of the patent.
  • the blocking element can be a simple bar or a more complex organ i.e. composed for example of a first part ensuring the guidance and a second part carrying out the blocking.

Abstract

The retaining mechanism for a roller shutter with metal slats, is able to roll onto one or more reels (6) turning on a fixed shaft (7) with the aid of spiral compensating springs (12) equipped with retaining members designed to stop the shutter dropping in the event of compensating spring failure. The outer end (17) of each compensating spring is connected to a locking member (20) which moves on the corresponding reel. Each locking member is able to move in the direction of a static component (30) fixed to the shaft (7) and engage with one of its teeth (35). The locking member is held at a distance from the static component by the compensating spring and moves in a direction which is substantially tangential to the reel's axis of rotation.

Description

La présente invention concerne un dispositif de retenue pour une fermeture à enroulement dotée d'un tablier de structure souple, apte à être enroulé autour d'un système support sensiblement cylindrique et monté mobile en rotation autour d'un arbre fixe disposé généralement au dessus d'une ouverture à condamner.The present invention relates to a device for retainer for a roll-up closure with a flexible structure deck, suitable for being wrapped around a substantially cylindrical and mounted support system movable in rotation around a fixed shaft arranged generally above an opening to be condemned.

L'invention trouve une application particulièrement avantageuse, mais non exclusive, dans le domaine des fermetures à effacement vertical équipant les accès des bâtiments industriels et commerciaux. On pense ici par exemple à des rideaux métalliques de garages ou à des grilles de devantures de magasins.The invention finds an application particularly advantageous, but not exclusive, in the area of vertical blanking closures equipping accesses to industrial buildings and commercial. We think here for example of curtains metallic garages or storefront grilles of shops.

Il est à noter que dans l'ensemble de ce texte, les termes rideau ou tablier désignent plus généralement tout moyen apte à fermer une ouverture, c'est-à-dire une plaque, un assemblage de lames, une grille, etc. La souplesse structurelle nécessaire à l'enroulement de cet organe peut provenir directement de la nature intrinsèque du matériau le constituant et/ou des articulations liant les différentes parties le composant.Note that throughout this text, the terms curtain or apron mean more generally any means capable of closing an opening, that is to say a plate, an assembly of blades, a grid, etc. The structural flexibility needed to the winding of this organ can come directly of the intrinsic nature of the material constituting it and / or joints connecting the different parts the component.

Dans le cas d'une fermeture à arbre fixe, l'enroulement du tablier est traditionnellement réalisé autour d'au moins une bobine montée mobile en rotation sur ledit arbre fixe. Chaque bobine est par ailleurs reliée à l'arbre fixe par l'intermédiaire d'un ressort de compensation de type spiral, enroulé à l'intérieur même de ladite bobine. Ce moyen de rappel élastique est chargé de contrebalancer au moins partiellement le poids du tablier, en restituant au cours de la phase d'ouverture, l'énergie emmagasinée sous forme de couple lors de la phase de fermeture.In the case of a fixed shaft closure, the winding of the deck is traditionally carried out around at least one coil mounted mobile in rotation on said fixed shaft. Each coil is also connected to the fixed shaft by means of a spring balance type, wound inside even of said coil. This elastic return means is responsible for at least partially counterbalancing the weight of the deck, restoring during the phase energy stored as a couple during the closing phase.

Comme toutes les fermetures à effacement vertical, les rideaux à enroulement autour d'un arbre fixe sont soumis à un certain nombre d'exigences réglementaires et normatives. Parmi celles-ci, la norme NF P 25-362 concerne la sécurité des utilisateurs en cas de défaillance de la fermeture. Elle stipule notamment, à son paragraphe 10.1, que toutes les fermetures à effacement vertical doivent comporter un dispositif de retenue non sollicité en fonctionnement normal et apte à empêcher la chute du tablier en cas de défaillance d'un des éléments support. Bien entendu, on pense ici avant tout à la rupture de l'élément le plus sollicité et donc le plus fragile du système, à savoir le ressort spiral monté à l'intérieur de chaque bobine compensatrice.Like all vertical clearing closures, curtains wrapped around a fixed shaft are subject to a number of regulatory requirements and normative. Among these, the NF P 25-362 standard concerns user safety in the event of closing failure. In particular, it stipulates that paragraph 10.1, that all closures to vertical erasure must include a device for restraint not requested in normal operation and suitable to prevent the apron from falling in the event of failure of one of the support elements. Of course, we think here above all the rupture of the most stressed element and therefore the most fragile of the system, namely the spring hairspring mounted inside each coil compensator.

Or, un tablier présente un poids relativement important, allant généralement de plusieurs dizaines à plusieurs centaines de kilogrammes. Combinée à une vitesse de chute élevée, cette masse constitue un réel danger pour les utilisateurs.However, an apron has a relatively heavy important, generally ranging from several tens to several hundred kilograms. Combined with a high fall speed, this mass constitutes a real danger to users.

On connaít de l'état de la technique très peu de dispositifs de sécurité capables de stopper la chute d'un tablier de fermeture à arbre fixe, en cas de rupture d'au moins un des ressorts de compensation utilisés.We know of the state of the art very little safety devices capable of stopping the fall a fixed-shaft closing apron, in the event of failure of at least one of the compensating springs used.

La demande de brevet français 2 739 656 décrit cependant plusieurs dispositifs de retenue susceptibles de remplir cette fonction. Schématiquement, le principe de verrouillage est identique pour chaque mode de réalisation décrit. Il consiste essentiellement à coupler positivement à l'arbre fixe, la bobine dont le ressort est défaillant, après un déplacement angulaire donné de ladite bobine par rapport à des moyens de verrouillage spécifiques. Ce mouvement, contrôlé par un élément de rappel monté entre la bobine et les moyens de verrouillage, va alors permettre audits moyens de verrouillage de commander le déplacement d'une pièce de blocage vers une roue à rochet fixe formant butée, réalisant ainsi l'immobilisation du tablier par rapport à l'arbre de la fermeture à enroulement.French patent application 2,739,656 describes however several restraint systems likely to fulfill this function. Schematically, the principle is the same for each mode of realization described. It basically consists of positively couple to the fixed shaft, the coil whose spring fails, after angular displacement given of said coil compared to means of specific locking. This movement, controlled by a return element mounted between the coil and the means lock, will then allow these means of interlock to control the movement of a piece of blocking to a fixed ratchet wheel forming a stop, thus achieving the immobilization of the apron relative to the shaft of the roll-up closure.

Mais quel que soit le mode de réalisation choisi, la mise en oeuvre de chacun de ces dispositifs de retenue apparaít extrêmement complexe, en raison du nombre important de pièces supplémentaires requis ainsi que des profondes modifications structurelles et fonctionnelles que cela entraíne. Cette complexité constitue bien évidemment un inconvénient majeur en terme de fiabilité et de coût. En ce qui concerne plus particulièrement ce dernier aspect, il est nécessaire de prendre en compte le prix de revient du dispositif de retenue proprement dit, mais également et surtout le coût important de son adaptation sur la fermeture à enroulement. Il en résulte que le surcoût exigé pour l'installation de tels systèmes de sécurité peut devenir dissuasif pour l'éventuel utilisateur.But whatever the embodiment chosen, the implementation of each of these restraint appears extremely complex, due to the large number of additional parts required as well that profound structural changes and functional that it entails. This complexity obviously constitutes a major drawback in reliability and cost. Regarding more particularly the latter aspect it is necessary to take into account the cost price of the device of restraint proper, but also and above all the significant cost of its adaptation to the closure at winding. It follows that the additional cost required for installing such security systems can become a deterrent to the potential user.

Aussi, le problème technique à résoudre par l'objet de la présente invention est de proposer un dispositif de retenue pour fermeture à enroulement dotée d'un tablier apte à être enroulé autour d'au moins une bobine montée mobile en rotation autour d'un arbre fixe, chaque bobine mobile étant reliée à l'arbre fixe par l'intermédiaire d'un ressort de compensation de type spiral, un dispositif de retenue étant associé à chaque ressort de compensation afin de bloquer la descente du tablier en cas de défaillance dudit ressort de compensation ; dispositif de retenue qui permettrait d'éviter les problèmes de l'état de la technique en offrant notamment une grande fiabilité ainsi qu'un faible coût par rapport à celui de la fermeture à sécuriser, tant au niveau du prix de revient du dispositif de retenue proprement dit que de celui de son adaptation sur ladite fermeture.Also, the technical problem to be solved by the object of the present invention is to provide a retainer for roll-up closure with an apron capable of being wrapped around at minus a coil mounted movable in rotation around a fixed shaft, each voice coil being connected to the shaft fixed by means of a compensation spring spiral type, a retaining device being associated to each compensation spring in order to block the lowering of the bulkhead in the event of failure of said spring compensation; retainer that would allow avoid the problems of the state of the art by offering in particular great reliability as well as low cost compared to that of closing at secure, both in terms of the cost price of restraint proper as that of its adaptation to said closure.

La solution au problème technique posé consiste, selon la présente invention, en ce que l'extrémité externe de chaque ressort de compensation est solidaire d'un élément de blocage monté mobile en déplacement sur la bobine correspondante, l'élément de blocage étant apte à se déplacer en direction d'un organe statique solidaire de l'arbre fixe afin de coopérer par blocage avec une partie formant butée dudit organe statique, ledit élément de blocage étant maintenu à distance de l'organe statique par la force de rappel exercée par le ressort de compensation.The solution to the technical problem posed consists, according to the present invention, in that the end external of each compensation spring is integral a blocking element mounted movable on the move the corresponding coil, the blocking element being able to move towards a static organ integral with the fixed shaft in order to cooperate by blocking with a part forming a stop of said static member, said blocking element being kept away from the static organ by the restoring force exerted by the compensation spring.

L'invention telle qu'ainsi définie présente l'avantage d'être de conception extrêmement simple puisque ce système de sécurité ne nécessite la coopération que de deux pièces seulement, à savoir un élément de blocage mobile et un organe statique. Par conséquent, et contrairement aux anti-chutes de l'art antérieur précédemment évoqué, l'adaptation d'un tel dispositif de retenue ne requiert que des modifications mineures au niveau de la structure intrinsèque de la fermeture à enroulement. En effet, ces transformations se limitent pour l'essentiel à simplement solidariser l'extrémité externe du ressort spiral de compensation à un élément de blocage monté mobile en déplacement sur la bobine correspondante. Cela ne remet nullement en cause le classique mécanisme de la fermeture, que ce soit d'un point de vue structurel et/ou fonctionnel. Pour toutes ces raisons, le dispositif de retenue objet de la présente invention bénéficie d'une fiabilité accrue ainsi que d'un prix de revient particulièrement bas par rapport aux systèmes équivalents déjà connus.The invention as thus defined presents the advantage of being extremely simple in design since this security system does require the cooperation of only two pieces, namely one movable blocking element and a static member. Through therefore, and unlike anti-hair loss art previously mentioned, the adaptation of such retainer requires only modifications minor at the level of the intrinsic structure of the roll closure. Indeed, these transformations are essentially limited to simply joining together the outer end of the balance spring a blocking element mounted movable on the move the corresponding coil. This in no way calls into question causes the classic closing mechanism, whether either from a structural and / or functional point of view. For all these reasons, the object restraint of the present invention enjoys reliability increased as well as a cost price particularly low compared to equivalent systems already known.

Si le dispositif de retenue est structurellement d'une extrême simplicité, il en va bien évidemment de même en ce qui concerne sa mise en oeuvre. Le ressort de compensation est en effet l'unique pièce commandant l'immobilisation ou le déplacement de l'élément de blocage par rapport à la bobine. En d'autres termes, il assure seul l'immobilisation de l'élément de blocage en position passive, il en commande également seul le déplacement en direction de l'organe statique, et enfin il en garantit seul le maintien en position active ; les positions passives et actives étant celles dans lesquelles ledit élément de blocage et ledit organe statique sont respectivement à distance et au contact l'un de l'autre.If the restraint is structurally extremely simple, obviously even with regard to its implementation. The spring compensation is indeed the only commanding piece immobilization or displacement of the element of blocking with respect to the coil. In other words, it ensures only the immobilization of the blocking element in passive position, it also controls only the displacement towards the static organ, and finally it alone guarantees that it remains in the active position; the passive and active positions being those in which said blocking element and said member static are remote and contact respectively one of the other.

La position de l'élément de blocage par rapport à l'organe statique dépend donc uniquement et surtout directement de l'état du ressort de compensation.The position of the locking element with respect to the static organ therefore depends only and above all directly from the state of the compensation spring.

En conditions normales d'utilisation, le ressort de compensation est tendu en permanence en raison d'un excès d'enroulement de la spire le constituant, et ceci quelle que soit la position du tablier. Comme par ailleurs son extrémité interne est fixe, la force de rappel ne se fait ressentir qu'à son extrémité externe. C'est en effet la seule susceptible de se déplacer, pour la double raison qu'elle est solidarisée à l'élément de blocage monté mobile en déplacement sur la bobine d'une part, et que ladite bobine est elle-même montée mobile en rotation autour de l'arbre fixe d'autre part. La seule force de rappel permet ainsi de maintenir avantageusement l'élément de blocage en position passive, c'est-à-dire à distance de l'organe statique. Cet équilibre reste parfaitement stable aussi longtemps que le ressort de compensation conserve ses propriétés mécaniques originelles.Under normal conditions of use, the spring compensation is stretched permanently due to a excess winding of the turn constituting it, and this whatever the position of the deck. Like elsewhere its internal end is fixed, the force of recall is only felt at its outer end. It is indeed the only one likely to move, for the double reason that it is united to the locking element mounted to move on the coil on the one hand, and that said coil is itself rotatably mounted around the fixed shaft on the other hand. The only return force thus allows advantageously hold the locking element in passive position, i.e. away from the organ static. This balance also remains perfectly stable as long as the compensation spring retains its original mechanical properties.

Lorsqu'une défaillance intervient au niveau du ressort de compensation, la rupture se produit systématiquement à l'endroit où les sollicitations sont maximales, c'est-à-dire là où la courbure est la plus forte. La partie concernée correspond bien entendu à l'extrémité interne du ressort de compensation, et plus généralement à toute la zone située à proximité du point de fixation sur l'arbre fixe. Le ressort de compensation se voit donc libéré de l'intérieur de toute contrainte mécanique de sorte que la force de rappel disparaít.When a fault occurs in the compensation spring, failure occurs systematically at the place where the stresses are maximum, i.e. where the curvature is most strong. The party concerned of course corresponds to the inner end of the compensation spring, and more generally to the entire area near the fixing point on the fixed shaft. The spring of compensation is therefore released from within any mechanical stress so the force of reminder disappears.

Comme le ressort de compensation est enroulé sur lui-même lorsque la fermeture fonctionne normalement, le volume qu'il occupe à l'intérieur de la bobine est très nettement inférieur à celui qu'il possède au repos, c'est-à-dire lorsqu'il n'est soumis à aucune contrainte d'enroulement. Aussi, après rupture, il va avoir tendance à reprendre naturellement sa forme originelle. En cas de défaillance, il se produit par conséquent une expansion sensiblement radiale du ressort de compensation qui tend à s'écarter au maximum de l'axe autour duquel il était enroulé. Ce mouvement se poursuit jusqu'à ce que le déploiement du ressort soit stoppé, en raison de l'espace limité existant à l'intérieur de la bobine.As the compensating spring is wound on itself when the closure is operating normally, the volume it occupies inside the coil is very much lower than the one it has at rest, that is to say when it is not subject to any winding stress. Also, after rupture, it will tend to naturally return to shape original. In case of failure, it occurs by therefore a substantially radial expansion of the compensation spring which tends to deviate as far as possible of the axis around which it was wound. This movement continues until spring deployment be stopped, due to the limited space existing at inside the coil.

Lors du relâchement du ressort de compensation, l'extrémité la plus mobile du ressort de compensation subit très logiquement un déplacement spiral en raison de la nature intrinsèque dudit ressort. Ce déplacement est orienté suivant le sens d'enroulement de la spire, de l'intérieur vers l'extérieur puisque la rupture a lieu au niveau de l'extrémité interne du ressort spiral. En fin de parcours, l'inertie générée par ce mouvement provoque une légère rotation du ressort de compensation car ce dernier n'est pas totalement maintenu à ce moment précis. Bien que solidarisée à l'élément de blocage, son extrémité externe est en effet susceptible de se déplacer. Par ailleurs, le mouvement de rotation en question est dirigé dans le même sens que le déplacement de l'extrémité interne précédemment décrit.When the compensation spring is released, the most mobile end of the compensation spring very logically undergoes a spiral displacement due of the intrinsic nature of said spring. This displacement is oriented in the winding direction of the coil, from the inside to the outside since the break has takes place at the inner end of the spring hairspring. At the end of the journey, the inertia generated by this movement causes a slight rotation of the spring compensation because the latter is not fully maintained at this precise moment. Although united to the locking element, its outer end is in effect likely to move. In addition, the rotational movement in question is directed in the same direction as moving the inner end previously described.

Lorsqu'il n'est plus soumis à la force de rappel exercée par le ressort de compensation, l'élément de blocage est par conséquent libre de quitter sa position passive et de se déplacer par rapport à la bobine sur laquelle il est monté mobile, en direction de l'organe statique. Cela sous-entend bien évidemment qu'il puisse être entraíné en déplacement par l'intermédiaire d'un organe en mouvement. C'est précisément ce qui se produit lorsque le ressort de compensation rompt puis s'anime du double mouvement d'extension radiale et de rotation précédemment décrit. L'élément de blocage, solidarisé à l'extrémité externe du ressort de compensation, est alors déplacé jusqu'à la position active dans laquelle il coopère par blocage avec l'organe statique.When it is no longer subjected to the restoring force exerted by the compensating spring, the element of blocking is therefore free to leave its position passive and move relative to the coil on which it is mounted movable towards the organ static. This obviously implies that he can be trained on the move through a moving organ. This is precisely what produced when the compensating spring breaks then comes alive with the double movement of radial extension and rotation previously described. The blocking element, secured to the outer end of the spring compensation, is then moved to the position active in which it cooperates by blocking with the static organ.

Une fois cette position extrême atteinte, l'élément de blocage est maintenu au contact de l'organe statique grâce au fait que l'expansion radiale du ressort de compensation est limitée par le faible volume disponible à l'intérieur de la bobine, et qu'ainsi ledit ressort vient très vite se bloquer contre la portion de tablier entourant ladite bobine, immobilisant par conséquent ledit élément de blocage.Once this extreme position is reached, the locking element is kept in contact with the static organ thanks to the fact that the radial expansion of the compensation spring is limited by the low volume available inside the coil, and that said spring comes to block very quickly against the apron portion surrounding said coil, consequently immobilizing said blocking element.

Selon une particularité de l'invention, le dispositif de retenue comporte des moyens de guidage aptes à diriger le déplacement de l'élément de blocage en direction de l'organe statique, en cas de rupture du ressort de compensation ; le déplacement envisagé s'effectuant entre la position passive dans laquelle l'élément de blocage est à distance de l'organe statique et la position active dans laquelle ledit élément de blocage est en contact avec ledit organe statique.According to a feature of the invention, the retainer includes guide means able to direct movement of the blocking member towards the static organ, in case of rupture of the compensation spring; the planned displacement taking place between the passive position in which the blocking element is at a distance from the member static and the active position in which said blocking element is in contact with said member static.

Après une rupture, le ressort de compensation est animé d'un mouvement complexe résultant sensiblement de la combinaison entre une expansion radiale et une rotation dans le sens d'enroulement de la spire. Aussi, il est particulièrement avantageux de contrôler le déplacement de son extrémité externe afin que l'élément de blocage mobile soit dirigé de manière sûre et efficace en direction de l'organe statique. Le but est ici avant tout d'éviter les risques d'accrochage du ressort de compensation et/ou de l'élément de blocage avec un quelconque élément, présent à l'intérieur de la bobine, autre que l'organe statique. Des moyens de guidage ménagés de manière adéquate permettent avantageusement d'atteindre cet objectif.After a break, the compensation spring is animated by a complex movement resulting substantially from the combination of radial expansion and rotation in the winding direction of the coil. Also, it is particularly advantageous to control the moving its outer end so that the element movable blocking device is safely and safely steered effective towards the static organ. The goal is here above all to avoid the risks of catching the compensation spring and / or blocking element with any element, present inside the coil, other than the static member. Means of adequately arranged guides allow advantageously achieve this goal.

Selon une autre particularité de l'invention, au moins une portion de l'élément de blocage présente une structure flexible lui permettant de se déformer et ainsi de se désengager temporairement de l'organe statique lorsque ledit élément de blocage est en position active. Cette caractéristique avantageuse permet de déverrouiller momentanément le dispositif de retenue. Le déverrouillage peut être réalisé manuellement ou par l'intermédiaire d'un mécanisme plus ou moins complexe.According to another feature of the invention, at at least a portion of the blocking element has a flexible structure allowing it to deform and thus to temporarily disengage from the organ static when said blocking element is in active position. This advantageous feature allows the device to be temporarily unlocked detention. Unlocking can be performed manually or through a more mechanism or less complex.

La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The following description next to the drawings attached, given by way of non-limiting examples, will understand what the invention is all about and how it can be done.

Les figures 1 et 2 représentent, en coupe transversale partielle, un dispositif de retenue selon un premier mode de réalisation de l'invention.Figures 1 and 2 show, in section partial transverse, a retaining device according to a first embodiment of the invention.

La figure 3 est une vue en perspective et en coupe partielle du dispositif de retenue illustré aux figures 1 et 2.Figure 3 is a perspective view in section partial of the retainer illustrated in the figures 1 and 2.

Les figures 4 et 5 constituent des vues en coupe transversale, illustrant un dispositif de retenue selon un second mode de réalisation de l'invention.Figures 4 and 5 are sectional views transverse, illustrating a retaining device according to a second embodiment of the invention.

Pour des raisons de clarté, les mêmes éléments ont été désignés par des références identiques. De même, seuls les éléments essentiels pour la compréhension de l'invention ont été représentés, et ceci sans respect de l'échelle et de manière schématique.For reasons of clarity, the same elements have have been designated by identical references. Likewise, only the essentials for understanding the invention have been shown, and this without respect scale and schematically.

Conformément à l'objet de la présente invention, la fermeture 1 à effacement vertical illustrée aux figures 1 à 3 est de type à arbre fixe. De manière classique, elle comporte un système support 2 autour duquel vient s'enrouler un tablier 3 monté coulissant entre des coulisses verticales 4, 5. Le système support 2 est constitué d'une série de bobines compensatrices 6 à ressort telles que celle visible sur les figures 1 à 3. Chacune d'entre elles est montée mobile en rotation autour du même arbre fixe 7, par l'intermédiaire de roulements non représentés. Les bobines 6 sont en outre reliées transversalement entre elles par deux lames de renfort 8, 9, solidarisées en opposition sur les circonférences respectives desdites bobines 6. Le tablier 3 est constitué quant à lui d'une pluralité de lames 10 articulées ; celle située à l'extrémité supérieure étant solidarisée à la lame de renfort 9 par des vis 11.In accordance with the subject of the present invention, closure 1 with vertical erasure illustrated in Figures 1 to 3 is of the fixed shaft type. So classic, it has a support system 2 around from which a sliding mounted apron 3 is wound up between vertical slides 4, 5. The support system 2 consists of a series of compensating coils 6 with spring such as that visible on FIGS. 1 to 3. Each of them is mounted mobile in rotation around the same fixed shaft 7, via bearings not shown. The coils 6 are further connected transversely to each other by two blades of reinforcement 8, 9, joined in opposition to the respective circumferences of said coils 6. The apron 3 is made up of a plurality of articulated blades; the one at the end upper being secured to the reinforcing blade 9 by screws 11.

De manière conventionnelle, chaque bobine compensatrice 6 est pourvue d'un ressort spiral 12 enroulé sur lui-même entre les deux flasques latéraux 13, 14. L'extrémité interne 15 du ressort 12 est tout aussi classiquement solidarisée à l'arbre 7 au moyen d'une vis de fixation 16. Par contre, selon une première caractéristique de l'invention, son extrémité externe 17 n'est pas directement fixée sur la bobine 6 mais solidarisée à un élément de blocage 20 monté mobile en déplacement sur ladite bobine 6, de manière à ce qu'en cas de défaillance du ressort de compensation ledit élément de blocage 20 puisse coopérer par blocage avec un organe statique 30 solidaire de l'arbre fixe 7.Conventionally, each coil compensator 6 is provided with a spiral spring 12 rolled up on itself between the two side flanges 13, 14. The inner end 15 of the spring 12 is all also conventionally secured to shaft 7 by means a fixing screw 16. On the other hand, according to a first characteristic of the invention, its end external 17 is not directly attached to the coil 6 but secured to a blocking element 20 mounted movable in displacement on said coil 6, so as to what in case of failure of the compensation spring said blocking element 20 can cooperate by blocking with a static member 30 secured to the fixed shaft 7.

Afin de diriger avec précision le mouvement de l'élément de blocage 20 en direction de l'organe statique 30, il est avantageusement prévu des moyens de guidage 40 constitués ici par deux lumières oblongues 41, 42 ménagées en vis-à-vis sur les deux flasques 13, 14 de la bobine 6 et suivant une direction sensiblement tangentielle par rapport à l'axe de rotation de ladite bobine 6. Les deux grands côtés 43, 44 de chaque lumière oblongue 41, 42 sont aptes à coopérer par coulissement avec au moins une portion de section 21 de l'élément de blocage 20. Les extrémités dites arrière 45 et avant 46 de chacune de ces lumières 41, 42 délimitent quant à elles les positions respectivement passive et active dudit élément de blocage 20 par rapport à l'organe statique 30.In order to precisely direct the movement of the locking element 20 in the direction of the member static 30, means are advantageously provided for guide 40 formed here by two oblong slots 41, 42 arranged opposite each other on the two flanges 13, 14 of the coil 6 and in a direction substantially tangential to the axis of rotation of said coil 6. The two long sides 43, 44 of each oblong light 41, 42 are able to cooperate by sliding with at least a portion of section 21 of the locking element 20. The so-called rear ends 45 and before 46 of each of these lights 41, 42 delimit the positions respectively passive and active of said blocking element 20 by relation to the static organ 30.

Dans cet exemple de réalisation, l'élément de blocage 20 est composé d'une barrette 22 de section rectangulaire sur laquelle est fixée transversalement une lame courbée 23 formant crochet. Cette lame 23 constitue la partie active 24 de l'élément de blocage 20 puisque c'est elle qui est destinée à coopérer par blocage avec une partie formant butée de l'organe statique 30.In this embodiment, the element of blocking 20 is composed of a bar 22 of section rectangular on which is fixed transversely a curved blade 23 forming a hook. This blade 23 constitutes the active part 24 of the blocking element 20 because it is she who is intended to cooperate by blocking with a part forming an abutment of the member static 30.

La barrette 22 joue quant à elle un rôle tout aussi essentiel en participant au guidage de la lame 23 depuis la position passive jusqu'à la position active. A cet effet, chacune de ses extrémités est en mesure de coulisser librement dans l'une des deux lumières 41, 42 dont la hauteur, c'est-à-dire la distance séparant les deux grands côtés 43, 44, est complémentaire de l'épaisseur de ladite barrette 22 afin de garantir la précision de guidage voulue.The bar 22 plays a role while as essential when participating in guiding the blade 23 from the passive position to the active position. To this end, each of its ends is able to slide freely in one of the two lights 41, 42 whose height, i.e. the distance between the two long sides 43, 44, is complementary to the thickness of said strip 22 in order to guarantee the desired guidance accuracy.

Ainsi qu'on peut le voir très clairement sur la figure 3, la partie active 24 de l'élément de blocage 20 est disposée à l'extérieur de la bobine 6 afin de venir se positionner à proximité d'un organe statique 30 externe. La barrette 22, qui traverse de part en part la bobine 6 via les lumières de guidage 41, 42, dépasse par conséquent davantage du côté du flasque 14 jouxtant l'organe statique 30 ; la lame 23 étant bien entendu solidarisée à cette extrémité.As can be seen very clearly on the Figure 3, the active part 24 of the locking element 20 is arranged outside the coil 6 in order to come to position near a static organ 30 external. Bar 22, which crosses right through share the coil 6 via the guide lights 41, 42, therefore more protrudes from the side of the flange 14 adjoining the static member 30; blade 23 being fine heard secured at this end.

Dans ce mode particulier de réalisation, l'organe statique 30 est constitué d'une roue dentée 31 fixée sur l'arbre fixe 7 par l'intermédiaire de vis 32, 33 ou tout autre moyen de fixation. Chaque dent 34 présente ici un profil en pointe triangulaire dont le bord 35, s'étendant radialement par rapport au centre de la roue, constitue avantageusement une partie formant butée de l'organe statique 30. L'organe statique 30 ainsi que l'élément de blocage 20 et les moyens de guidage 40 sont dimensionnés et ménagés de telle sorte qu'en positions passive et active, ledit organe statique 30 et ledit élément de blocage 20 sont respectivement à distance et au contact l'un de l'autre.In this particular embodiment, the organ static 30 consists of a fixed gear 31 on the fixed shaft 7 by means of screws 32, 33 or any other means of attachment. Each tooth 34 has here a triangular point profile whose edge 35, extending radially from the center of the wheel, advantageously constitutes a part forming stop of the static member 30. The static member 30 as well as the locking element 20 and the means of guide 40 are dimensioned and arranged so that that in passive and active positions, said organ static 30 and said blocking element 20 are respectively at a distance and in contact with one of the other.

La figure 1 montre un dispositif de retenue dans lequel l'élément de blocage 20 est en position passive. Ce dernier est en effet immobilisé à distance de l'organe statique 30 sous l'action du ressort de compensation 12, de sorte que la bobine 6 est apte à tourner librement autour de l'arbre fixe 7. Le tablier 3 peut par conséquent être manoeuvré tout aussi librement tant que le dispositif de retenue n'entre en fonctionnement.Figure 1 shows a retainer in which the locking element 20 is in the passive position. The latter is indeed immobilized at a distance of the static member 30 under the action of the spring of compensation 12, so that the coil 6 is suitable for freely rotate around the fixed shaft 7. The deck 3 can therefore be operated just as easily freely as long as the retainer does not come into operation.

De manière plus précise, l'immobilisation de l'élément de blocage 20 en position passive provient du fait que la barrette 22 est maintenue en appui contre les extrémités arrières 45 des lumières de guidage 41, 42, par la force de rappel exercée par le ressort de compensation 12 de type spiral. Dans cette position, la partie active 24 de l'élément de blocage 20 s'étend au voisinage de la périphérie de la roue dentée 31 mais n'est aucunement en mesure de rentrer en contact avec une quelconque partie 35 formant butée de l'organe statique 30.More specifically, the immobilization of the locking element 20 in passive position comes from the causes the bar 22 to be held in abutment against the rear ends 45 of the guide lights 41, 42, by the restoring force exerted by the spring of compensation 12 of the hairspring type. In this position, the active part 24 of the locking element 20 extends vicinity of the periphery of the toothed wheel 31 but is in no way able to get in touch with any part 35 forming an abutment of the member static 30.

Lorsqu'une défaillance intervient au niveau du ressort de compensation 12 proprement dit ou de son point de fixation sur l'arbre fixe 7, la rotation de la bobine 6 n'est alors plus compensée de sorte que le tablier 3 commence à chuter. Le dispositif de retenue, qui n'est plus verrouillé par la force de rappel, se met alors en oeuvre jusqu'à ce que l'élément de blocage 20 atteigne sa position active conformément à la figure 2.When a fault occurs in the compensation spring 12 proper or its attachment point on the fixed shaft 7, the rotation of the coil 6 is no longer compensated so that the apron 3 starts to fall. The restraint, which is no longer locked by the restoring force, then implements until the blocking element 20 reaches its active position according to the figure 2.

Lors de la rupture du ressort de compensation 12, une rotation de cet organe est engendrée sous l'effet combiné de son expansion radiale et du déplacement spiral de son extrémité libre. L'inertie correspondant à ce mouvement est alors transmise à l'élément de blocage 20, puisque ce dernier est fixé à l'extrémité externe 17 du ressort de compensation 12 via la barrette 22. L'élément de blocage 20, monté mobile sur la bobine 6, va par conséquent être entraíné en déplacement en direction de l'organe statique 30 ; ce mouvement étant contrôlé par les moyens de guidage 40 avec lesquels la barrette 22 coopère par coulissement. Le déplacement se poursuit jusqu'à ce que la partie active 24 de l'élément de blocage 20 rentre en contact avec une partie 35 formant butée de l'organe statique 30 ; la bobine 6 étant au cours de cette phase toujours en rotation par rapport à l'arbre fixe 7 et donc par rapport à la roue dentée 31. Dans cette configuration, la lame courbée 23 formant crochet va tôt ou tard venir s'accrocher à l'une des nombreuses dents 34 espacées régulièrement sur le pourtour de la roue 31. Une fois l'extrémité du crochet en appui conte le côté 35 formant butée d'une de ces dents 34, la bobine 6 à laquelle l'élément de blocage 20 est solidarisé est alors stoppée dans sa rotation de sorte que la chute du tablier 3 est également arrêtée.When the compensation spring 12 breaks, a rotation of this organ is generated under the effect combined with its radial expansion and displacement spiral of its free end. The corresponding inertia to this movement is then transmitted to the element of blocking 20, since the latter is fixed at the end external 17 of the compensation spring 12 via the bar 22. The locking element 20, mounted movably on the coil 6, will therefore be driven in movement towards the static member 30; this movement being controlled by the guide means 40 with which the bar 22 cooperates by sliding. The movement continues until the game active 24 of the locking element 20 comes into contact with a part 35 forming a stop for the static member 30 ; coil 6 being during this phase always in rotation relative to the fixed shaft 7 and therefore by relative to the toothed wheel 31. In this configuration, the curved blade 23 forming a hook will sooner or later come cling to one of the many spaced 34 teeth regularly around the circumference of wheel 31. Once the end of the hook against the side 35 forming a stop for one of these teeth 34, the coil 6 to which the locking element 20 is secured is then stopped in its rotation so that the fall of the apron 3 is also stopped.

L'élément de blocage 20 se retrouve ainsi en position active comme le montre explicitement la figure 2. La barrette 22 est maintenue en butée contre les extrémités avant 46 des lumières de guidage 41, 42 en raison du fait que le ressort de compensation 12, auquel elle est fixé, est lui-même immobilisé à l'intérieur de la bobine 6. En effet, comme son expansion radiale est limitée faute de place suffisante, le ressort de compensation 12 va par conséquent exercer une telle pression, contre la portion du tablier 3 entourant la bobine 6, qu'il va se retrouver en quelque sorte coincé et donc incapable de bouger.The locking element 20 is thus found in active position as shown explicitly in the figure 2. The bar 22 is held in abutment against the front ends 46 of the guide lights 41, 42 in due to the fact that the compensation spring 12, to which it is attached, is itself immobilized at inside the coil 6. Indeed, like its radial expansion is limited due to lack of space sufficient, the compensating spring 12 goes through therefore exert such pressure, against the portion of the deck 3 surrounding the coil 6, that it will somehow get stuck and therefore unable to move.

Afin d'offrir la possibilité de remonter le tablier 3 pour faciliter le dépannage de la fermeture 1, la partie active 24 de l'élément de blocage 20 est avantageusement pourvue d'une structure flexible lui permettant de se déformer. Ainsi, bien que l'une de ses extrémités soit fixe puisque solidarisée à la barrette 22 parfaitement immobile à cet instant bien déterminé, son autre extrémité 25 dite libre est en mesure de s'écarter ou d'être écartée de l'organe statique 30 pour permettre une rotation quelconque de la bobine et ainsi un déverrouillage du dispositif de retenue. Il est alors théoriquement possible de relever ou de descendre le tablier 3.In order to offer the possibility of reassembling the apron 3 to facilitate troubleshooting of the closure 1, the active part 24 of the locking element 20 is advantageously provided with a flexible structure allowing to deform. So although one of his ends is fixed since secured to the bar 22 perfectly still at this particular moment, its other end 25 called free is able to deviate from or be removed from the static member 30 to allow any rotation of the coil and thus unlocking the retainer. he is then theoretically possible to raise or lower the apron 3.

Dans la pratique, seule la rotation dans le sens d'enroulement présente cependant de l'intérêt. Ce mouvement permet en effet avantageusement de rouvrir l'ouverture lorsque cette dernière est accidentellement obstruée lors de la chute partielle du tablier 3 survenant après rupture du ressort de compensation 12. La rotation inverse, c'est-à-dire celle se déroulant dans le sens de déroulement dudit tablier 3, est précisément celle que le dispositif de retenue est destiné à interdire en cas de rupture du ressort de compensation 12. Ce mouvement n'a donc à priori aucune utilité après la mise en oeuvre de l'anti-chute.In practice, only the rotation in the direction winding is of interest, however. This movement allows advantageously to reopen the opening when the latter is accidentally obstructed when the apron 3 partially falls occurring after rupture of the compensating spring 12. Reverse rotation, i.e. the one taking place in the direction of unfolding of said deck 3, is precisely the one that the retainer is intended to prohibit in case of rupture of the spring of compensation 12. This movement therefore a priori has no usefulness after the implementation of the anti-fall.

Dans l'exemple de réalisation illustré aux figures 1 à 3, la descente du tablier 3 n'est plus possible après rupture du ressort de compensation 12 car elle est verrouillée par le dispositif de retenue. Seule une rotation dans le sens d'enroulement est envisageable grâce à la forme spécifique de l'organe statique 30 combinée à la structure particulière de l'élément de blocage 20.In the embodiment illustrated in the figures 1 to 3, the descent of the apron 3 is no longer possible after rupture of the compensation spring 12 because it is locked by the retainer. Only one rotation in the winding direction is possible thanks to the specific shape of the static member 30 combined with the particular structure of the element of blocking 20.

En ce qui concerne plus particulièrement l'organe statique 30, le profil triangulaire des dents 34 ménagées en périphérie de la roue 31 est de nature à n'offrir qu'un bord 35 formant butée, c'est-à-dire celui s'étendant radialement par rapport au centre de ladite roue dentée 31. L'autre bord étant biseauté, il n'est pas en mesure de coopérer par blocage avec la partie active 24 de l'élément de blocage 20. il en résulte que la rotation de la bobine 6 ne peut être stoppée que dans un seul sens : celui correspondant précisément à la chute du tablier 3.With regard more particularly to the organ static 30, the triangular profile of the teeth 34 formed on the periphery of the wheel 31 is such as to offer only an edge 35 forming a stop, that is to say one extending radially from the center of said toothed wheel 31. The other edge being bevelled, it is unable to cooperate by blocking with the active part 24 of the locking element 20. As a result, the rotation of the coil 6 cannot be stopped only in one direction: that corresponding precisely when the deck 3 falls.

A contrario, il est possible de faire tourner la bobine 6 dans le sens d'enroulement dans la mesure où l'élément de blocage 20 présente une structure suffisamment flexible pour lui permettre de se déformer. C'est précisément le cas de l'exemple représenté aux figures 1 à 3, puisque la partie active 24 de l'élément de blocage 20 est avantageusement constituée par une lame de ressort. La souplesse naturelle de cet élément va permettre à son extrémité libre 25 de suivre le contour de la roue dentée 31, en parcourant la succession de lignes brisées que constitue la série de dents triangulaires 34. Comme l'extrémité libre 25 ne va rencontrer dans ce sens aucune aspérité formant butée, rien ne va empêcher la rotation de la bobine 6 par rapport à l'organe statique 30.Conversely, it is possible to rotate the reel 6 in the winding direction as far as the locking element 20 has a structure flexible enough to allow it to deform. This is precisely the case of the example shown in Figures 1 to 3, since the active part 24 of the locking element 20 is advantageously constituted by a leaf spring. Flexibility natural element will allow its end free 25 to follow the contour of the toothed wheel 31, in traversing the succession of broken lines that constitutes the series of triangular teeth 34. As the free end 25 will only meet in this direction no roughness forming a stop, nothing will prevent the rotation of the coil 6 with respect to the static member 30.

Dès que le tablier 3 va cesser d'être remonté, la bobine 6 va alors s'immobiliser dans un premier temps, puis tourner très légèrement dans le sens de déroulement jusqu'à ce que l'extrémité libre 25 de la lame 23 prenne appui contre le bord 35 formant butée d'une des dents 34 de la roue 31. Le tablier 3 est alors à nouveau bloqué malgré son propre poids qui tend à le faire chuter.As soon as the apron 3 will stop being reassembled, the coil 6 will then come to a standstill at first, then turn very slightly in the direction of unwinding until the free end 25 of the blade 23 bears against the edge 35 forming a stop one of the teeth 34 of the wheel 31. The apron 3 is then again blocked despite its own weight which tends to make it fall.

Dans le second mode de réalisation illustré aux figures 4 et 5, on retrouve un élément de blocage 50 mobile apte à coopérer par blocage avec un organe statique 60 fixe. La encore, l'extrémité externe 17 du ressort de compensation 12 est solidaire de l'élément de blocage 50 de manière à être maintenu à distance de l'organe statique 60 lorsque ledit ressort de compensation 12 est en parfait état de marche. De même, le déplacement de l'élément de blocage 50 en direction de l'organe statique 60 est assuré avantageusement par des moyens de guidage 70 constitués par deux lumières oblongues 71 ménagées en vis-à-vis sur les deux flasques 81 de la bobine 80.In the second embodiment illustrated in Figures 4 and 5, there is a blocking element 50 mobile able to cooperate by blocking with a member static 60 fixed. Again, the outer end 17 of the compensation spring 12 is integral with the element blocking 50 so as to be kept away from the static member 60 when said spring of compensation 12 is in perfect working order. Likewise, movement of the locking element 50 in the direction of the static member 60 is advantageously provided by guide means 70 consisting of two lights oblong 71 arranged opposite on the two flanges 81 of the coil 80.

Mais à la différence du premier mode de réalisation précédemment exposé, l'élément de blocage 50 n'est ici constitué que d'une simple barrette 51 montée mobile en déplacement à travers la bobine 80, qui plus est suivant une direction sensiblement radiale par rapport au centre de ladite bobine 80. Bien que présentant des caractéristiques formelles identiques à leurs homologues de la première variante, les moyens de guidage 70 sont en effet orientés non plus tangentiellement mais radialement. L'organe statique 60 est également différent puisqu'il se présente sous la forme d'une couronne 61 pourvue d'une denture intérieure.But unlike the first mode of realization previously exposed, the blocking element 50 here consists only of a simple bar 51 movable mounted moving through the coil 80, moreover in a substantially radial direction relative to the center of said coil 80. Although having formal characteristics identical to their counterparts in the first variant, the means of guide 70 are indeed oriented either tangentially but radially. Static organ 60 is also different since it comes under the shape of a crown 61 with teeth interior.

En position passive (figure 4), le ressort de compensation 12 est classiquement enroulé sur lui-même entre les flasques 81 de la bobine 80. Ses extrémités interne 15 et externe 17 sont solidarisées respectivement à l'arbre fixe 7 et à l'élément de blocage 50. Soumis à l'importante force de rappel exercée par le ressort de compensation 12, l'élément de blocage 50 est plaqué contre les extrémités arrière 72 des lumières de guidage 71 de sorte qu'il est hors de contact de la couronne dentée 61. La bobine 80 est par conséquent en mesure de tourner autour de l'arbre fixe 7 afin de faire monter ou descendre le tablier 3.In the passive position (Figure 4), the spring compensation 12 is conventionally wound on itself between the flanges 81 of the coil 80. Its ends internal 15 and external 17 are joined respectively to the fixed shaft 7 and to the element of blocking 50. Subject to significant restoring force exerted by the compensating spring 12, the element of blocking 50 is pressed against the rear ends 72 guide lights 71 so it's out of contact of the crown gear 61. The coil 80 is by therefore able to rotate around the fixed shaft 7 in order to raise or lower the apron 3.

En cas de défaillance, on assiste comme dans le premier cas à un déploiement radial du ressort de compensation 12. Mais le déplacement de l'élément de blocage 50, qui survient conséquemment, a cette fois pour origine la conjugaison de deux phénomènes. La barrette de blocage 51 est en effet à la fois, tirée par l'extrémité externe 17 du ressort de compensation 12 et poussée par la spire inférieure directement adjacente. Ainsi prise en sandwich, la barrette 51 est déplacée en direction de la couronne dentée 61 jusqu'à atteindre la position active représentée à la figure 5. Elle est alors en appui contre les extrémités avant 73 des lumières de guidage 71, parfaitement maintenue sous l'effet de la tension résiduelle générée par le ressort de compensation 12 qui ne peut complètement se déployer.In case of failure, we assist as in the first case to a radial deployment of the spring of compensation 12. But the displacement of the element of blocking 50, which occurs consequently, this time the origin is the combination of two phenomena. The blocking bar 51 is indeed both pulled by the outer end 17 of the compensation spring 12 and pushed by the lower coil directly adjacent. Thus sandwiched, the bar 51 is moved in the direction of the ring gear 61 to reach the active position shown in Figure 5. It is then in abutment against the front ends 73 guide lights 71, perfectly held under the effect of the residual tension generated by the spring compensation 12 which cannot completely get deploy.

Comme la barrette de blocage 51 présente une longueur très supérieure à l'épaisseur de la bobine 80 et que l'essentiel de cet excédent s'étend perpendiculairement au plan dans lequel est disposée la couronne dentée 61, ladite barrette 51 vient elle-même au contact de ladite couronne 61 lorsque la position passive est atteinte. Le blocage est alors réalisé de manière similaire au premier mode de réalisation précédemment décrit, de sorte que la chute du tablier 3 est là encore enrayée.As the blocking bar 51 has a length much greater than the thickness of the coil 80 and that most of this surplus is spread perpendicular to the plane in which the toothed crown 61, said bar 51 itself comes in contact with said crown 61 when the position passive is reached. The blocking is then carried out similar to the first embodiment previously described, so that the fall of the deck 3 is still there.

Concrètement, la barrette 51 s'engage en premier lieu entre deux dents 62 consécutives. Au fur et à mesure de la rotation de la bobine 80 par rapport à la couronne 61 statique, la barrette 51 va glisser le long du bord biseauté 64 d'une des dents 62, bord 64 avec lequel elle reste parfaitement au contact sous l'action du ressort de compensation 12. Ce déplacement relatif prend fin dès lors que la barrette 51 rentre en butée contre le bord radial 63 de l'autre dent 62, réalisant ainsi le blocage.Concretely, the bar 51 engages first place between two consecutive teeth 62. As and when measurement of the rotation of the coil 80 relative to the crown 61 static, the bar 51 will slide along the beveled edge 64 of one of the teeth 62, edge 64 with which she stays perfectly in contact under the action of the compensation spring 12. This relative displacement ends when the bar 51 comes into abutment against the radial edge 63 of the other tooth 62, making thus blocking.

Il est bien entendu possible de relever le tablier 3 afin de dépanner la fermeture 1. Mais à la différence du premier mode de réalisation, il n'est ici pas nécessaire que l'élément de blocage 50 soit capable de se déformer et par conséquent qu'il présente une structure flexible. Seule la forme spécifique des dents 62 ménagées sur la couronne 61 apparaít essentielle, en combinaison avec la mobilité radiale de la barrette 51.It is of course possible to raise the deck 3 to troubleshoot shutdown 1. But unlike of the first embodiment, it is not here necessary that the blocking element 50 is capable of deform and therefore it presents a flexible structure. Only the specific shape of the teeth 62 formed on the crown 61 appears essential, in combination with the radial mobility of the bar 51.

Le profil triangulaire, précédemment défini, de chaque dent 62 permet en effet à la couronne 61 de ne présenter aucune partie formant butée lorsque la bobine 80 est mise en rotation dans le sens d'enroulement. De plus, même si il est plaqué contre les extrémités avant 73 des lumières de guidage 71, l'élément de blocage 50 est potentiellement en mesure d'être reculé si on exerce sur lui une poussée suffisante, c'est-à-dire d'intensité supérieure à la tension générée par le ressort de compensation 12. Aussi, si la force appliquée au moment de l'enroulement du tablier 3 est suffisante, la barrette 51 va pouvoir glisser le long de chaque bord biseauté 64 tout en s'écartant radialement en direction du centre de la bobine 80. Une fois cette opération terminée, la barrette 51 peut revenir en butée contre le bord radial 63 d'une des dents 62 afin de verrouiller à nouveau la chute du tablier 3.The triangular profile, previously defined, of each tooth 62 in fact allows the crown 61 to not have no part forming a stop when the coil 80 is rotated in the winding direction. Of more, even if it is pressed against the front ends 73 of the guide lights 71, the locking element 50 is potentially able to be moved back if we exerts on it a sufficient push, that is to say of intensity greater than the voltage generated by the compensation spring 12. Also, if the force applied at the time of winding the deck 3 is sufficient, the bar 51 will be able to slide along from each beveled edge 64 while moving away radially towards the center of the coil 80. A once this operation is completed, the bar 51 can to abut against the radial edge 63 of one of the teeth 62 in order to again lock the fall of the apron 3.

Naturellement, et comme il résulte déjà amplement de ce qui précède, l'invention n'est pas limitée aux modes particuliers de réalisation qui ont été décrits à titre d'exemples préférés. Elle englobe également toutes les variantes restant dans le cadre de la portée du brevet. On pense notamment ici à des dispositifs de retenue combinant un déplacement tangentiel de l'élément de blocage avec l'utilisation d'un organe statique constitué par une couronne dotée d'une denture intérieure ; l'élément de blocage pouvant être une simple barrette ou un organe plus complexe c'est-à-dire composé par exemple d'une première partie assurant le guidage et d'une seconde partie réalisant le blocage.Naturally, and as it already results amply of the above, the invention is not limited to particular embodiments which have been described in title of preferred examples. It also includes all variants remaining within the scope of the patent. We are thinking here in particular of restraint combining a tangential displacement of the blocking element with the use of an organ static consisting of a crown with teeth interior; the blocking element can be a simple bar or a more complex organ i.e. composed for example of a first part ensuring the guidance and a second part carrying out the blocking.

Claims (13)

Dispositif de retenue pour fermeture à enroulement (1) dotée d'un tablier (3) apte à être enroulé autour d'au moins une bobine (6, 80) montée mobile en rotation autour d'un arbre fixe (7), chaque bobine mobile (6, 80) étant reliée à l'arbre fixe (7) par l'intermédiaire d'un ressort de compensation (12) de type spiral, un dispositif de retenue étant associé à chaque ressort de compensation (12) afin de bloquer la descente du tablier (3) en cas de défaillance dudit ressort de compensation (12) correspondant, caractérisé en ce que l'extrémité externe (17) de chaque ressort de compensation (12) est solidaire d'un élément de blocage (20, 50) monté mobile en déplacement sur la bobine (6, 80) correspondante, l'élément de blocage (20, 50) étant apte à se déplacer en direction d'un organe statique (30, 60) solidaire de l'arbre fixe (7) afin de coopérer par blocage avec une partie (35) formant butée dudit organe statique (30, 60), ledit élément de blocage (20, 50) étant maintenu à distance de l'organe statique (30, 60) par la force de rappel exercée par le ressort de compensation (12).Retention device for roll-up closure (1) provided with an apron (3) able to be wrapped around at least one coil (6, 80) mounted movable in rotation around a fixed shaft (7), each voice coil (6, 80) being connected to the fixed shaft (7) via a balance spring (12) of spiral type, a retainer being associated with each spring of compensation (12) in order to block the descent of the apron (3) in case of failure of said spring corresponding compensation (12), characterized in that the outer end (17) of each spring of compensation (12) is integral with a blocking element (20, 50) mounted movable in displacement on the coil (6, 80) corresponding, the blocking element (20, 50) being able to move towards a static organ (30, 60) integral with the fixed shaft (7) in order to cooperate by blocking with a part (35) forming a stop of said static member (30, 60), said blocking element (20, 50) being kept away from the static member (30, 60) by the restoring force exerted by the spring of compensation (12). Dispositif de retenue selon la revendication 1, caractérisé en ce que l'élément de blocage (20, 50) est monté mobile en déplacement suivant une direction sensiblement tangentielle par rapport à l'axe de rotation de la bobine (6, 80).Restraint device according to claim 1, characterized in that the locking element (20, 50) is mounted movable in displacement in a direction substantially tangential to the axis of rotation of the coil (6, 80). Dispositif de retenue selon la revendication 1, caractérisé en ce que l'élément de blocage (20, 50) est monté mobile en déplacement suivant une direction sensiblement radiale par rapport à l'axe de rotation de la bobine (6, 80).Restraint device according to claim 1, characterized in that the locking element (20, 50) is mounted movable in displacement in a direction substantially radial to the axis of rotation of the coil (6, 80). Dispositif de retenue selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il comporte des moyens de guidage (40, 70) aptes à diriger le déplacement de l'élément de blocage (20, 50) en direction de l'organe statique (30, 60) , entre une position passive et une position active dans lesquelles ledit élément de blocage (20, 50) et ledit organe statique (30, 60) sont respectivement à distance et au contact l'un de l'autre.Restraint according to any one of Claims 1 to 3, characterized in that it comprises guide means (40, 70) capable of directing the movement of the locking element (20, 50) in direction of the static organ (30, 60), between a passive position and an active position in which said blocking element (20, 50) and said member static (30, 60) are respectively remote and at contact with each other. Dispositif de retenue selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les moyens de guidage (40, 70) comportent deux lumières oblongues (41, 42, 71) ménagées en vis-à-vis sur les deux flasques (13, 14, 81) de la bobine (6, 80), suivant la direction de déplacement de l'élément de blocage (20), les deux grands côtés (43, 44) de chaque lumière (41, 42, 71) étant aptes à coopérer par coulissement avec au moins une portion de l'élément de blocage (20, 50), les deux extrémités (45, 46) de chaque lumière (41, 42, 71) délimitant les positions respectivement passive et active dudit élément de blocage (20, 50) par rapport à l'organe statique (30, 60).Restraint according to any one of claims 1 to 4, characterized in that the means guide (40, 70) have two oblong slots (41, 42, 71) arranged opposite on the two flanges (13, 14, 81) of the coil (6, 80), according to the direction of movement of the locking element (20), the two long sides (43, 44) of each light (41, 42, 71) being able to cooperate by sliding with at minus a portion of the locking element (20, 50), the two ends (45, 46) of each lumen (41, 42, 71) delimiting the positions respectively passive and active of said blocking element (20, 50) relative to the static organ (30, 60). Dispositif de retenue selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément de blocage (20) comporte une barrette (22) sur laquelle est solidarisée une lame (23) apte à coopérer par blocage avec une partie (35) formant butée de l'organe statique (30), ladite barrette (22) coopérant par coulissement avec les deux lumières oblongues (41, 42) ménagées respectivement sur les deux flasques (13, 14) de la bobine (6).Restraint according to any one of claims 1 to 5, characterized in that the element blocking (20) comprises a bar (22) on which is secured a blade (23) adapted to cooperate by blocking with a part (35) forming a stop for the member static (30), said bar (22) cooperating by sliding with the two oblong lights (41, 42) formed respectively on the two flanges (13, 14) of the coil (6). Dispositif de retenue selon la revendication 6, caractérisé en ce que la lame (23) présente une forme de crochet.Restraint device according to claim 6, characterized in that the blade (23) has a shape hook. Dispositif de retenue selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément de blocage (50) est constitué par une barrette (51) apte à coopérer, d'une part, par coulissement avec les deux lumières oblongues (71) ménagées respectivement sur les deux flasques (81) de la bobine (80), et d'autre part, par blocage avec une partie formant butée de l'organe statique (60).Restraint according to any one of claims 1 to 5, characterized in that the element blocking (50) is constituted by a bar (51) able to cooperate, on the one hand, by sliding with the two oblong lights (71) provided respectively on the two flanges (81) of the coil (80), and on the other hand, by blocking with a part forming a stop of the static member (60). Dispositif de retenue selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'au moins une portion de l'élément de blocage (20, 50) présente une structure flexible lui permettant de se déformer et ainsi de se désengager temporairement de l'organe statique (30, 60), lorsque ledit élément de blocage (20, 50) est en position active.Restraint according to any one of Claims 1 to 8, characterized in that at least one portion of the locking element (20, 50) has a flexible structure allowing it to deform and thus to temporarily disengage from the organ static (30, 60), when said blocking element (20, 50) is in the active position. Dispositif de retenue selon la revendication 9, caractérisé en ce que la portion de l'élément de blocage (20) dotée d'une structure flexible est constituée par sa partie active (24), c'est-à-dire celle coopérant par blocage avec la partie (35) formant butée de l'organe statique.Restraint device according to claim 9, characterized in that the portion of the element of blocking (20) with a flexible structure is constituted by its active part (24), that is to say that cooperating by blocking with the part (35) forming stop of the static member. Dispositif de retenue selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'organe statique (30) est constitué par une roue dentée (31).Restraint according to any one of claims 1 to 10, characterized in that the member static (30) is constituted by a toothed wheel (31). Dispositif de retenue selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'organe statique (60) est constitué par une couronne (61) dotée d'une denture intérieure.Restraint according to any one of claims 1 to 10, characterized in that the member static (60) is constituted by a crown (61) provided an internal toothing. Dispositif de retenue selon l'une des revendications 11 ou 12, caractérisé en ce que chaque dent (34, 62) de l'organe statique (30, 60) présente un profil triangulaire composé d'un bord biseauté (36, 64) et d'un bord (35, 63), formant butée, s'étendant de manière sensiblement radiale par rapport au centre de l'organe statique (30, 60).Restraint according to one of claims 11 or 12, characterized in that each tooth (34, 62) of the static member (30, 60) has a triangular profile composed of a beveled edge (36, 64) and an edge (35, 63), forming a stop, extending from substantially radially from the center of the static organ (30, 60).
EP98402388A 1997-12-09 1998-09-28 Catching device for rollable closing devices Expired - Lifetime EP0922832B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715829A FR2772070B1 (en) 1997-12-09 1997-12-09 RETAINER FOR WINDING CLOSURE
FR9715829 1997-12-09

Publications (2)

Publication Number Publication Date
EP0922832A1 true EP0922832A1 (en) 1999-06-16
EP0922832B1 EP0922832B1 (en) 2004-03-17

Family

ID=9514580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402388A Expired - Lifetime EP0922832B1 (en) 1997-12-09 1998-09-28 Catching device for rollable closing devices

Country Status (7)

Country Link
EP (1) EP0922832B1 (en)
AT (1) ATE262109T1 (en)
DE (1) DE69822414T2 (en)
DK (1) DK0922832T3 (en)
ES (1) ES2218786T3 (en)
FR (1) FR2772070B1 (en)
PT (1) PT922832E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871841A1 (en) * 2004-06-22 2005-12-23 Bmj Sarl Shutter fall prevention device for e.g. industrial plant, has locking unit with flap cooperating with notch of static part during failure of compensation spring, where notch is associated with unlocking unit of flap in descent direction
EP1816294A1 (en) * 2006-02-06 2007-08-08 Profilmar Spring box with antidropping device for vertical roller shutter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826688B1 (en) 2001-06-28 2004-01-23 Bmj ANTI-FALL DEVICE FOR A WINDING CLOSURE
FR2919014B1 (en) * 2007-07-20 2009-08-28 Profilmar Sa VERTICALLY DISPLACED ROLLING CURTAIN FAN SPRING BOX PROVIDED WITH SAFETY.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739656A1 (en) 1995-10-09 1997-04-11 Tournier Gerard DEVICE FOR ACTUATING A WINDOW CLOSURE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739656A1 (en) 1995-10-09 1997-04-11 Tournier Gerard DEVICE FOR ACTUATING A WINDOW CLOSURE
EP0768445A1 (en) * 1995-10-09 1997-04-16 Gérard Tournier Rolling closure device with fixed shaft and counterbalance spring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871841A1 (en) * 2004-06-22 2005-12-23 Bmj Sarl Shutter fall prevention device for e.g. industrial plant, has locking unit with flap cooperating with notch of static part during failure of compensation spring, where notch is associated with unlocking unit of flap in descent direction
EP1609940A1 (en) * 2004-06-22 2005-12-28 Michel Javey Anti-fall device for roll-type closure
EP1816294A1 (en) * 2006-02-06 2007-08-08 Profilmar Spring box with antidropping device for vertical roller shutter
FR2897096A1 (en) * 2006-02-06 2007-08-10 Profilmar Sa VERTICAL DISPLACEMENT ROLLING DEVICE FAN SPRING HOUSING.

Also Published As

Publication number Publication date
EP0922832B1 (en) 2004-03-17
DE69822414D1 (en) 2004-04-22
FR2772070B1 (en) 2000-01-07
ES2218786T3 (en) 2004-11-16
DK0922832T3 (en) 2004-07-26
DE69822414T2 (en) 2005-06-23
PT922832E (en) 2004-07-30
ATE262109T1 (en) 2004-04-15
FR2772070A1 (en) 1999-06-11

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