EP0894936B1 - Fall protection device for vertically retractable closures with a shutter mounted on a fixed tube - Google Patents
Fall protection device for vertically retractable closures with a shutter mounted on a fixed tube Download PDFInfo
- Publication number
- EP0894936B1 EP0894936B1 EP98390012A EP98390012A EP0894936B1 EP 0894936 B1 EP0894936 B1 EP 0894936B1 EP 98390012 A EP98390012 A EP 98390012A EP 98390012 A EP98390012 A EP 98390012A EP 0894936 B1 EP0894936 B1 EP 0894936B1
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- EP
- European Patent Office
- Prior art keywords
- fixed
- flange
- blocking element
- security device
- blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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 invention relates to a safety device for closing at vertical erasure provided with an apron mounted around a fixed tube, said device for safety being intended to prevent the apron from falling in the event of an element failure of the system carrying said curtain.
- a plurality of security systems designed according to the same principle and generally comprising a shaped part disc, or rotor, adapted to be secured to the rotary tube so as to be driven in rotation with the latter, at least one stop piece pivotally mounted on the rotor around an axis parallel to the axis of the rotary tube, and a fixed part, or stator, of shape general annular, arranged around the rotor and provided with an internal peripheral face having housings for blocking the free end of the stop piece.
- the principle of all these safety devices is to use the centrifugal force exerted on each pivoting stop piece, to bring this last in an apron locking position when this centrifugal force becomes too large, corresponding to an abnormal excessive speed of unfolding of the curtain.
- these safety devices have stop pieces which are subject to kickback when the curtain rotates, which should be controlled if we want to guarantee their effectiveness.
- the rebound phenomenon is avoided thanks to to the combined shape of the end of the stop piece and the grooves which allows to obtain a jamming effect of said abutment piece inside one of said Gorges.
- stator is deformed by residual way and the subsequent operation of the safety device is no longer guaranteed, so the latter must also be replaced in this case.
- Another solution described in patent DE 24 33544, and also applicable to curtains with a rotating tube, consists in driving in rotation with the weights tube capable of pivoting about axes parallel to the axis of said axis tube, so that one of said weights comes to engage in teeth of stop of a fixed flange when the centrifugal force acting on it exceeds a given value determined by elastic means, in a position where it is held automatically by a ratchet.
- the present invention aims to overcome this drawback and has for essential objective of providing a locking safety device with a deck mounted around a fixed tube, allowing the deck to descend completely once said device is activated.
- Another object of the invention is to provide a device for safety causing no wear during normal operation of the curtain.
- the principle according to the invention therefore also consists in using the centrifugal force exerted on a blocking member associated with means elastic to bring the latter into a locking position of the apron when the centrifugal force becomes too great, corresponding to excessive speed representative of the failure of a driving element.
- this safety device including each blocking element rotates with the apron around the fixed tube, and one of which said blocking elements is housed in a radial opening of a flange fixed integral with said fixed tube with its end in the shape of a claw extending in the extension of this opening, in the event of a motor element breaking, allows to control the rebound phenomenon without leading to any deterioration said security device.
- the rebound of the blocking element cannot intervene because the peripheral rim delimiting the opening in which penetrates said blocking element is located radially inside the end in claw shape of the latter and therefore acts as a radial stop preventing its pivot to its normal operating position. So, in the first place, such safety device proves to be of excellent reliability.
- such a safety device has no rotating element in contact with a fixed element so that it has no wearing parts.
- this safety device does not have to be replaced and can be reused as it is after the rupture of a driving element.
- each radial opening of the fixed flange is formed on a peripheral portion of said flange arranged to be along the portion of upward path of the axis articulation of each locking member, according to the direction of descent of the deck.
- each locking element leads, in fact, each locking element to be pivoted not only under the effect of an increase centrifugal force but under the effect of this force plus its own weight said blocking element. Therefore, this safety device has a time of very fast reaction, and can also be calibrated very precisely by means of an adequate calibration of the elastic means.
- the fixed flange consists of a disc with spaced return elements on its periphery perpendicular to said disc, delimiting slots forming the openings of blocking.
- This design makes it possible, in fact, to produce, by welding inserts or by folding using unsophisticated techniques, returns with a substantial thickness capable of avoiding any risk of deformation of these when activating the safety device.
- the security device includes two returns arranged substantially over a quarter of the circumference of the disc extending from the lower generator thereof. The presence of two successive radial blocking openings thus constitute double security locking the apron.
- the flange mobile consists of a disc with a diameter significantly greater than that of the disc of the fixed flange, provided with a peripheral rim arranged to cover radially the blocking openings of said fixed flange.
- the security preferably comprises at least two blocking elements, the articulation axes are distributed symmetrically with respect to the axis of the fixed tube.
- these blocking elements are in number of three arranged so that their axes of articulation form the vertices of a equilateral triangle centered on the axis of the fixed tube.
- the means elastic associated with each blocking element consist of a spring arranged to tend to rotate said locking element towards the axis of the fixed tube.
- the movable flange then has, for each locking element, an element limit stop for pivoting of said blocking element under the action of spring.
- each element blocking device is provided, near its claw-shaped end, with a transverse notch capable of covering the peripheral edge portion of the flange fixed delimiting an opening after pivoting of said blocking element.
- Such a notch by covering the peripheral rim of the fixed flange, forms a radial stop limiting the pivoting of the elements blocking.
- the notch of each blocking element has a rear wall inclined towards the rear, in considering the direction of rotation of said locking element, the peripheral rim of the fixed flange having at each opening a bevelled edge inclination combined with that of said bottom wall.
- This safety device firstly comprises a flange fixed 9 having the shape of a disc 10 pierced with a central hole of diameter substantially higher than that of the fixed tube 1, and welded, around the periphery of this orifice, on a sheath 11 of internal diameter conjugated with the external diameter of said fixed tube, said sheath being pierced with diametrically opposite radial orifices making it possible to secure to the fixed tube 1 by means of a screw / nut assembly 11a.
- This fixed flange 9 further comprises a peripheral rim 12, presenting substantially over a quarter of the circumference of said flange, a portion 13 of lesser height.
- This fixed flange 9 also comprises two peripheral notches (masked in the figures) in with regard to which the peripheral rim portion 13 is interrupted, said notches being respectively provided at one of the end zones and in the central zone of this peripheral rim portion 13.
- This fixed flange 9 finally comprises two stop parts 14, 15 L-shaped, one of the branches of which is welded to the external face of said flange fixed, and the other branch 14a, 15a of which is housed in a notch, so as to form a stop height greater than that of the peripheral rim 12, delimiting with the latter respectively two radial openings 16, 17.
- the face lateral of this branch 14a, 15a, of abutment of the locking elements has a obviously 18 of triangular section, arranged so as to be on the trajectory of said blocking elements.
- the fixed flange 9 is arranged so that the peripheral rim portion 13 extends, starting from the lower generator of disc 10, in the left portion of the dial of said disc, if we consider the direction of descent of the deck 8 materialized by the arrow F.
- the safety device also includes a second movable flange 19 arranged to be welded or fixed by means of bolts on the face internal curved plates 6, 7 connecting the coils 5, so as to be driven in rotation with the latter and the deck 8, and disposed opposite the fixed flange 9 of so as to form a housing with the latter.
- This movable flange 19 also has the shape of a disc. 20 pierced with a central orifice allowing it to be mounted around the fixed tube 1.
- a cage of ball bearings 22 is interposed between the fixed tube 1 and the disc 20, and held on the latter by means of a plate 21 forming an external cage.
- This flange 19 also has a peripheral rim cylindrical 23 obtained by folding arranged to radially cover the rim peripheral 12 of the fixed flange 9, and to be secured to the curved plates 6, 7.
- This movable flange 19 is also equipped with three knives blocking 25, 26, 27 rectilinear with a thinned front end in the form of claw such as 25a.
- Each of these knives 25-27 also has a transverse notch 40 delimiting its claw-shaped end portion 25a and adapted to cover the branch 14a, 15a of the abutment pieces 14, 15 during blocking of the device.
- This notch 40 also has a bottom wall 40a inclined conjugate of the recess 18 of the abutment pieces 14, 15.
- These knives 25-27 are mounted on the disc 20, in line with their rear end by means of articulation axes consisting of each of said knives, and as shown in FIG. 3, in a screw 28 / nut 29 system and in three washers 30, 31, 41 interposed on either side of said disc and said knives.
- the axes of articulation of the knives 25-27 are evenly distributed on the disc 20 and form the vertices an equilateral triangle centered on the axis of said disc, so that said knives extend along cords of the latter, their claw 25a being at a short distance radial, of the order of two millimeters, of the peripheral rim 12 of the fixed flange 9.
- the knives 25-27 pivot about their axis of articulation, and one of said knives, in the example the knife 25, comes first place slide on the portion of the peripheral rim 13, in the radial opening 16, then abut against the stop piece 14, the second stop piece 15 being only designed to increase security.
- the notch 40 comes to cap the branch 14a of this stop piece at the recess 18 so that the bottom wall 40a of this notch 40 collects the first stop shock.
- the second stop shock is received by the wall adjacent transverse of this notch 40 which is pressed radially against the abutment piece 14 and thereby limits the pivoting of the knife 25.
- any risk of kickback is negated because the shaped end knife claw 25a slides radially outside the stop piece 14.
- Another safety criterion guaranteeing the blocking of the apron 8 resides in the fact that the abutment pieces 14, 15 are arranged along the portion upward path of the knuckle axes 25-27, if we consider the direction of unwinding F. Because of this, in fact, the weight of the knives 25-27 adds up centrifugal force and therefore promotes the pivoting of the latter.
- one of the primary advantages of the safety according to the invention resides in the fact that, once the apron 8 is blocked, such as shown in Figure 4, the knife 25 can be unlocked very simply by lifting somewhat said apron, and the latter can then be lowered completely from manually, allowing direct access to the winding system (springs compensators 4 ).
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Tents Or Canopies (AREA)
- Casings For Electric Apparatus (AREA)
- Emergency Lowering Means (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
Description
L'invention vise un dispositif de sécurité pour fermeture à effacement vertical dotée d'un tablier monté autour d'un tube fixe, ledit dispositif de sécurité étant destiné à éviter la chute du tablier en cas de défaillance d'un élément du système porteur dudit rideau.The invention relates to a safety device for closing at vertical erasure provided with an apron mounted around a fixed tube, said device for safety being intended to prevent the apron from falling in the event of an element failure of the system carrying said curtain.
Pour des raisons évidentes de sécurité, il est courant de doter les rideaux de fermeture à effacement vertical de dispositifs de retenue visant à éviter la chute du tablier dans l'hypothèse d'une défaillance d'un élément du système porteur. D'ailleurs, dans certains pays, les normes en vigueur imposent d'équiper de tels rideaux d'un dispositif de sécurité.For obvious security reasons, it is common to provide vertical-closing closing curtains for retaining devices intended to avoid the apron falling in the event of a failure of a system element carrier. In fact, in some countries, the standards in force require that such curtains of a safety device.
En ce qui concerne les rideaux dotés de ressorts de compensation du tablier montés autour d'un tube fixe, ces ressorts sont les éléments principaux susceptibles de subir une défaillance, et la solution la plus courante actuelle consiste à concevoir des ressorts de compensation intégrant leur propre système de sécurité en cas de rupture. Toutefois, cette solution présente principalement deux inconvénients. En effet, et en premier lieu, elle conduit à une augmentation du prix de revient des rideaux du fait de la multiplication du nombre de dispositifs de sécurité équivalent au nombre de ressorts, et de plus elle impose de remplacer le ressort muni de son dispositif de sécurité lors de la rupture de ce dernier. En outre, lors de la rupture d'un ressort de compensation, le tablier se trouve bloqué dans la position où il se trouve lors de cette rupture. Or, les ressorts de compensation se trouvent logés à l'intérieur de l'enroulement du tablier et ne sont donc directement accessibles que si ce tablier est entièrement descendu. Dans ces conditions, le changement du ressort de compensation rompu s'avère pratiquement systématiquement une opération hasardeuse nécessitant fréquemment de détériorer le tablier en vue d'accéder audit ressort. Regarding curtains with springs of compensation of the deck mounted around a fixed tube, these springs are the elements most likely to fail, and the most common solution current is to design compensating springs incorporating their own safety system in case of breakage. However, this solution presents mainly two disadvantages. Indeed, and in the first place, it leads to a increase in the cost price of the curtains due to the multiplication of the number safety devices equivalent to the number of springs, and moreover it requires replace the spring fitted with its safety device when this breaks latest. In addition, when a compensating spring breaks, the bulkhead is blocked in the position it is in when it breaks. The springs of compensation are housed inside the apron winding and are not therefore directly accessible only if this deck is fully lowered. In these conditions, the change of the broken compensating spring proves practically systematically a hazardous operation frequently requiring deterioration the deck in order to access said spring.
En ce qui concerne les rideaux de fermeture montés autour d'un tube rotatif, il existe à l'heure actuelle une pluralité de systèmes de sécurité conçus selon le même principe et comportant de façon générale, une pièce en forme de disque, ou rotor, apte à être solidarisée au tube rotatif de façon à être entraínée en rotation avec ce dernier, au moins une pièce de butée montée pivotante sur le rotor autour d'un axe parallèle à l'axe du tube rotatif, et une pièce fixe, ou stator, de forme générale annulaire, disposée autour du rotor et dotée d'une face périphérique interne présentant des logements de blocage de l'extrémité libre de la pièce de butée.Regarding the closing curtains mounted around of a rotating tube, there are currently a plurality of security systems designed according to the same principle and generally comprising a shaped part disc, or rotor, adapted to be secured to the rotary tube so as to be driven in rotation with the latter, at least one stop piece pivotally mounted on the rotor around an axis parallel to the axis of the rotary tube, and a fixed part, or stator, of shape general annular, arranged around the rotor and provided with an internal peripheral face having housings for blocking the free end of the stop piece.
Le principe de tous ces dispositifs de sécurité consiste à utiliser la force centrifuge s'exerçant sur chaque pièce de butée pivotante, pour amener cette dernière dans une position de blocage du tablier lorsque cette force centrifuge devient trop importante, correspondant à une vitesse excessive anormale de déroulement du rideau.The principle of all these safety devices is to use the centrifugal force exerted on each pivoting stop piece, to bring this last in an apron locking position when this centrifugal force becomes too large, corresponding to an abnormal excessive speed of unfolding of the curtain.
Dans la pratique, de tels dispositifs de sécurité donnent entière satisfaction lorsqu'ils sont destinés à équiper des rideaux de fermeture de poids relativement faibles tels que par exemple utilisés pour des constructions à usage d'habitation. Par contre, ils s'avèrent présenter des inconvénients lorsque les rideaux de fermeture, par exemple tels qu'utilisés pour des bâtiments industriels, présentent des dimensions et donc des poids relativement importants.In practice, such safety devices give full satisfaction when intended to equip weight closing curtains relatively weak such as for example used for constructions for use residential. However, they turn out to have drawbacks when the curtains , for example as used for industrial buildings, have relatively large dimensions and therefore weights.
En effet, de par leur conception, ces dispositifs de sécurité comportent des pièces de butée qui se trouvent soumises à un phénomène de rebond lors du blocage en rotation du rideau, qu'il convient de maítriser si l'on veut garantir leur efficacité.Indeed, by design, these safety devices have stop pieces which are subject to kickback when the curtain rotates, which should be controlled if we want to guarantee their effectiveness.
Or, dans la pratique, la maítrise de ce phénomène de rebond s'avère un problème difficile à résoudre, tel que cela ressort par exemple de l'examen du dispositif de sécurité de type classique décrit dans le brevet US 5.494.093, dont la face périphérique du stator comporte des gorges inclinées vers lesquelles l'extrémité de la pièce de butée est guidée par des rampes ménagées sur ladite face périphérique.However, in practice, the control of this rebound phenomenon proves to be a difficult problem to solve, such as emerges for example from the examination of the conventional type security device described in US Patent 5,494,093, the peripheral face of the stator has inclined grooves towards which the end of the abutment piece is guided by ramps formed on said peripheral face.
Selon cette conception, le phénomène de rebond est évité grâce à la forme conjuguée de l'extrémité de la pièce de butée et des gorges qui permet d'obtenir un effet de coincement de ladite pièce de butée à l'intérieur d'une desdites gorges.According to this conception, the rebound phenomenon is avoided thanks to to the combined shape of the end of the stop piece and the grooves which allows to obtain a jamming effect of said abutment piece inside one of said Gorges.
Toutefois, l'effort de coincement étant proportionnel au poids des tabliers, l'utilisation d'un tel dispositif de sécurité avec des tabliers de poids relativement élevé conduit soit à un blocage avec un effet de coincement important de la pièce de butée à l'intérieur d'une gorge, soit à une déformation non-élastique du stator.However, the wedging force being proportional to the weight aprons, the use of such a safety device with heavy aprons relatively high leads either to a blockage with a significant wedging effect of the abutment piece inside a groove, or to a non-elastic deformation of the stator.
Dans la première hypothèse, il est pratiquement impossible de décoincer la pièce de butée sans accéder directement au dispositif de sécurité, et cette opération nécessite le démontage des moyens d'entraínement de l'arbre rotatif en vue d'accéder à ce dispositif de sécurité, puis le démontage dudit dispositif de sécurité qui peut s'avérer délicat puisque ce dernier est bloqué. De plus, lors de ce démontage, il est fréquent que le dispositif soit détérioré, ce qui impose son remplacement.In the first hypothesis, it is practically impossible to loosen the stopper piece without accessing the safety device directly, and this operation requires the disassembly of the drive means of the rotary shaft in order to access this safety device, then the disassembly of said safety device security which can be delicate since the latter is blocked. In addition, during this disassembly, it is frequent that the device is damaged, which imposes its replacement.
Dans la deuxième hypothèse, le stator se trouve déformé de façon résiduelle et le fonctionnement ultérieur du dispositif de sécurité n'est plus garanti, de sorte que ce dernier doit dans ce cas également être remplacé.In the second hypothesis, the stator is deformed by residual way and the subsequent operation of the safety device is no longer guaranteed, so the latter must also be replaced in this case.
Une autre solution, décrite dans le brevet DE 24 33544, et s'appliquant également à des rideaux à tube rotatif, consiste à entraíner en rotation avec le tube des masselottes aptes à pivoter autour d'axes parallèles à l'axe dudit tube, de façon qu'une desdites masselottes vienne s'enclencher dans des dents de butée d'un flasque fixe lorsque la force centrifuge s'exerçant sur cette dernière excède une valeur donnée déterminée par des moyens élastiques, dans une position de blocage où elle est maintenue automatiquement par un cliquet.Another solution, described in patent DE 24 33544, and also applicable to curtains with a rotating tube, consists in driving in rotation with the weights tube capable of pivoting about axes parallel to the axis of said axis tube, so that one of said weights comes to engage in teeth of stop of a fixed flange when the centrifugal force acting on it exceeds a given value determined by elastic means, in a position where it is held automatically by a ratchet.
Selon ce dispositif, le phénomène de rebond est donc maítrisé au moyen d'un cliquet qui assure le maintien de la masselotte dans sa position de blocage. Toutefois, cette solution conduit au même inconvénient que celui précité des tabliers à ressorts de compensation, à savoir que le tablier est bloqué dans la position où il se trouve lors de la rupture d'un élément moteur. According to this device, the rebound phenomenon is therefore controlled by means of a ratchet which keeps the flyweight in its position blocking. However, this solution leads to the same drawback as that mentioned above. decks with compensating springs, i.e. the deck is blocked in the position it is in when a motor element breaks.
La présente invention vise à pallier cet inconvénient et a pour objectif essentiel de fournir un dispositif de sécurité pour fermeture dotée d'un tablier monté autour d'un tube fixe, autorisant de faire descendre totalement le tablier une fois ledit dispositif activé.The present invention aims to overcome this drawback and has for essential objective of providing a locking safety device with a deck mounted around a fixed tube, allowing the deck to descend completely once said device is activated.
Un autre objectif de l'invention est de fournir un dispositif de sécurité n'engendrant aucune usure lors du fonctionnement normal du rideau.Another object of the invention is to provide a device for safety causing no wear during normal operation of the curtain.
A cet effet, l'invention vise un dispositif de sécurité comprenant :
- un flasque fixe solidarisé autour du tube fixe et présentant, au moins partiellement, un rebord périphérique doté d'au moins une ouverture radiale, dite de blocage, axée dans un plan vertical A,
- un flasque mobile disposé autour du tube fixe en regard du flasque fixe, et solidarisé au tablier de façon à être entraíné en rotation avec ce dernier,
- au moins un élément de blocage articulé, vers une de ses extrémités, sur le flasque mobile autour d'un axe parallèle à l'axe du tube fixe, chacun desdits éléments de blocage étant agencé de façon à se trouver axé dans le plan vertical A et comportant une extrémité libre en forme de griffe de forme adaptée pour pénétrer dans chaque ouverture radiale du flasque fixe, et se bloquer dans ladite ouverture dans une position où au moins une portion de ladite extrémité en forme de griffe se trouve dans le prolongement de cette ouverture radialement à l'extérieur du rebord périphérique délimitant cette dernière,
- et associés à chaque élément de blocage, des moyens
élastiques aptes :
- à maintenir l'élément de blocage dans une position de fonctionnement normal où son extrémité libre se déplace selon une circonférence centrée sur l'axe du tube fixe de rayon inférieur à la distance radiale entre ledit axe et chaque ouverture radiale, en deçà d'une force centrifuge prédéterminée sollicitant ledit élément de blocage,
- à autoriser un pivotement de l'élément de blocage de façon à conduire son extrémité libre à venir se bloquer dans une ouverture radiale lorsque la force centrifuge excède la valeur seuil prédéterminée.
- a fixed flange secured around the fixed tube and having, at least partially, a peripheral rim provided with at least one radial opening, called a blocking opening, centered in a vertical plane A,
- a movable flange disposed around the fixed tube opposite the fixed flange, and secured to the apron so as to be rotated with the latter,
- at least one blocking element articulated, towards one of its ends, on the movable flange around an axis parallel to the axis of the fixed tube, each of said blocking elements being arranged so as to be centered in the vertical plane A and comprising a free end in the shape of a claw adapted to penetrate into each radial opening of the fixed flange, and to lock in said opening in a position where at least a portion of said end in the shape of a claw is in the extension of this opening radially outside the peripheral rim defining the latter,
- and associated with each blocking element, suitable elastic means:
- maintaining the blocking element in a normal operating position where its free end moves along a circumference centered on the axis of the fixed tube with a radius less than the radial distance between said axis and each radial opening, within a predetermined centrifugal force urging said blocking element,
- authorizing a pivoting of the blocking element so as to cause its free end to come and block in a radial opening when the centrifugal force exceeds the predetermined threshold value.
Le principe selon l'invention consiste donc également à utiliser la force centrifuge s'exerçant sur un organe de blocage associé à des moyens élastiques pour amener ce dernier dans une position de blocage du tablier lorsque la force centrifuge devient trop importante, correspondant à une vitesse excessive représentative de la rupture d'un élément moteur.The principle according to the invention therefore also consists in using the centrifugal force exerted on a blocking member associated with means elastic to bring the latter into a locking position of the apron when the centrifugal force becomes too great, corresponding to excessive speed representative of the failure of a driving element.
Toutefois, la conception de ce dispositif de sécurité dont chaque élément de blocage tourne avec le tablier autour du tube fixe, et dont un desdits éléments de blocage vient se loger dans une ouverture radiale d'un flasque fixe solidaire dudit tube fixe avec son extrémité en forme de griffe s'étendant dans le prolongement de cette ouverture, en cas de rupture d'un élément moteur, permet de maítriser le phénomène de rebond sans conduire à une quelconque détérioration dudit dispositif de sécurité. En effet, le rebond de l'élément de blocage ne peut intervenir du fait que le rebord périphérique délimitant l'ouverture dans laquelle pénètre ledit élément de blocage se trouve radialement à l'intérieur de l'extrémité en forme de griffe de ce dernier et fait donc office de butée radiale interdisant son pivotement vers sa position de fonctionnement normal. Ainsi, en premier lieu, un tel dispositif de sécurité s'avère d'une excellente fiabilité. De plus, il autorise, une fois le blocage assuré, et en faisant remonter quelque peu ledit tablier, de ramener l'élément de blocage dans sa position initiale et ainsi de pouvoir ensuite descendre complètement ce tablier en le soutenant lors de cette descente. L'élément moteur rompu se trouve donc ainsi directement accessible et il peut alors être procédé aisément à son changement. A noter, en outre, qu'il peut alors être également procédé de façon aisée à une vérification éventuelle de l'état du dispositif de sécurité.However, the design of this safety device including each blocking element rotates with the apron around the fixed tube, and one of which said blocking elements is housed in a radial opening of a flange fixed integral with said fixed tube with its end in the shape of a claw extending in the extension of this opening, in the event of a motor element breaking, allows to control the rebound phenomenon without leading to any deterioration said security device. In fact, the rebound of the blocking element cannot intervene because the peripheral rim delimiting the opening in which penetrates said blocking element is located radially inside the end in claw shape of the latter and therefore acts as a radial stop preventing its pivot to its normal operating position. So, in the first place, such safety device proves to be of excellent reliability. In addition, it authorizes, once the guaranteed blocking, and by raising said apron somewhat, to bring the element blocking in its initial position and so being able to then descend completely this apron by supporting it during this descent. The driving force broken is thus thus directly accessible and it can then be proceeded easily at its change. Note, moreover, that it can then also be proceeded easily to a possible verification of the state of the safety device.
De plus, dans les conditions de fonctionnement normal du rideau, un tel dispositif de sécurité ne comporte aucun élément rotatif en contact avec un élément fixe de sorte qu'il ne comporte aucune pièce d'usure. In addition, under normal operating conditions of the curtain, such a safety device has no rotating element in contact with a fixed element so that it has no wearing parts.
Enfin, ce dispositif de sécurité n'a pas à être remplacé et peut être réutilisé tel quel après la rupture d'un élément moteur.Finally, this safety device does not have to be replaced and can be reused as it is after the rupture of a driving element.
Selon une autre caractéristique de l'invention, chaque ouverture radiale du flasque fixe est ménagée sur une portion périphérique dudit flasque agencée pour se trouver le long de la portion de trajet ascendant de l'axe d'articulation de chaque organe de blocage, selon le sens de descente du tablier.According to another characteristic of the invention, each radial opening of the fixed flange is formed on a peripheral portion of said flange arranged to be along the portion of upward path of the axis articulation of each locking member, according to the direction of descent of the deck.
Cette disposition de chaque ouverture radiale conduit, en effet, chaque élément de blocage à pivoter non seulement sous l'effet d'une augmentation de la force centrifuge mais sous l'effet de cette force additionnée du propre poids dudit élément de blocage. De ce fait, ce dispositif de sécurité présente un temps de réaction très rapide, et peut, en outre, être étalonné de façon très précise moyennant un tarage adéquat des moyens élastiques.This arrangement of each radial opening leads, in fact, each locking element to be pivoted not only under the effect of an increase centrifugal force but under the effect of this force plus its own weight said blocking element. Therefore, this safety device has a time of very fast reaction, and can also be calibrated very precisely by means of an adequate calibration of the elastic means.
Selon une autre caractéristique de l'invention, le flasque fixe est constitué d'un disque présentant sur sa périphérie des éléments de retour espacés perpendiculaires audit disque, délimitant des créneaux formant les ouvertures de blocage.According to another characteristic of the invention, the fixed flange consists of a disc with spaced return elements on its periphery perpendicular to said disc, delimiting slots forming the openings of blocking.
Cette conception permet, en effet, de réaliser, par soudage de pièces rapportées ou par pliage au moyen de techniques peu sophistiquées, des retours présentant une épaisseur conséquente apte à éviter tout risque de déformation de ces derniers lors de l'activation du dispositif de sécurité.This design makes it possible, in fact, to produce, by welding inserts or by folding using unsophisticated techniques, returns with a substantial thickness capable of avoiding any risk of deformation of these when activating the safety device.
De plus, de façon préférentielle, le dispositif de sécurité comprend deux retours disposés sensiblement sur un quart de la circonférence du disque s'étendant à partir de la génératrice inférieure de ce dernier. La présence de deux ouvertures radiales successives de blocage constitue ainsi une double sécurité de blocage du tablier.In addition, preferably, the security device includes two returns arranged substantially over a quarter of the circumference of the disc extending from the lower generator thereof. The presence of two successive radial blocking openings thus constitute double security locking the apron.
Selon une autre caractéristique de l'invention, le flasque mobile est constitué d'un disque de diamètre sensiblement supérieur à celui du disque du flasque fixe, doté d'un rebord périphérique agencé pour coiffer radialement les ouvertures de blocage dudit flasque fixe. According to another characteristic of the invention, the flange mobile consists of a disc with a diameter significantly greater than that of the disc of the fixed flange, provided with a peripheral rim arranged to cover radially the blocking openings of said fixed flange.
Toujours dans un but de sécurité, et afin, en outre, de réduire au maximum la course du tablier, une fois un élément moteur rompu, le dispositif de sécurité comprend préférentiellement, au moins deux éléments de blocage dont les axes d'articulation sont répartis symétriquement par rapport à l'axe du tube fixe.Always for security purposes, and in order to further reduce the maximum travel of the bulkhead, once a driving element has broken, the security preferably comprises at least two blocking elements, the articulation axes are distributed symmetrically with respect to the axis of the fixed tube.
De façon avantageuse, ces éléments de blocage sont au nombre de trois disposés de façon que leurs les axes d'articulation forment les sommets d'un triangle équilatéral centré sur l'axe du tube fixe.Advantageously, these blocking elements are in number of three arranged so that their axes of articulation form the vertices of a equilateral triangle centered on the axis of the fixed tube.
Selon une autre caractéristique de l'invention, les moyens élastiques associés à chaque élément de blocage consistent en un ressort agencé pour tendre à faire pivoter ledit élément de blocage en direction de l'axe du tube fixe. De plus, le flasque mobile possède alors, pour chaque élément de blocage, un élément de butée de limitation du pivotement dudit élément de blocage sous l'action du ressort.According to another characteristic of the invention, the means elastic associated with each blocking element consist of a spring arranged to tend to rotate said locking element towards the axis of the fixed tube. Of more, the movable flange then has, for each locking element, an element limit stop for pivoting of said blocking element under the action of spring.
Selon une autre caractéristique de l'invention, chaque élément de blocage est doté, à proximité de son extrémité en forme de griffe, d'une échancrure transversale apte à coiffer la portion de rebord périphérique du flasque fixe délimitant une ouverture après pivotement dudit élément de blocage.According to another characteristic of the invention, each element blocking device is provided, near its claw-shaped end, with a transverse notch capable of covering the peripheral edge portion of the flange fixed delimiting an opening after pivoting of said blocking element.
Une telle échancrure, en venant coiffer le rebord périphérique du flasque fixe, forme une butée radiale de limitation du pivotement des éléments de blocage.Such a notch, by covering the peripheral rim of the fixed flange, forms a radial stop limiting the pivoting of the elements blocking.
De plus, selon un mode de réalisation préférentiel, l'échancrure de chaque élément de blocage présente une paroi de fond inclinée vers l'arrière, en considérant le sens de rotation dudit élément de blocage, le rebord périphérique du flasque fixe présentant au niveau de chaque ouverture, une tranche biseautée d'inclinaison conjuguée de celle de ladite paroi de fond.In addition, according to a preferred embodiment, the notch of each blocking element has a rear wall inclined towards the rear, in considering the direction of rotation of said locking element, the peripheral rim of the fixed flange having at each opening a bevelled edge inclination combined with that of said bottom wall.
D'autres caractéristiques, buts et avantages de l'invention ressortiront de la description détaillée qui suit en référence aux dessins annexés qui en représentent, à titre d'exemple non limitatif, un mode de réalisation préférentiel. Sur ces dessins qui font partie intégrante de la présente description :
- la figure 1 une vue en perspective schématique d'un rideau de fermeture à effacement vertical équipé d'un dispositif de sécurité conforme à l'invention,
- la figure 2 est une coupe transversale par un plan vertical A du dispositif de sécurité conforme à l'invention, dans la position non sollicitée de ce dispositif correspondant à un fonctionnement normal du rideau,
- la figure 3 est une coupe longitudinale par un plan B de ce dispositif de sécurité dans sa position non sollicitée,
- la figure 4 est une coupe transversale par le plan A de ce dispositif de sécurité dans sa position sollicitée de blocage du rideau,
- et la figure 5 est une vue en perspective du flasque fixe de ce dispositif de sécurité.
- FIG. 1 is a schematic perspective view of a closing curtain with vertical erasure equipped with a safety device according to the invention,
- FIG. 2 is a cross section through a vertical plane A of the safety device according to the invention, in the unsolicited position of this device corresponding to normal operation of the curtain,
- FIG. 3 is a longitudinal section through a plane B of this safety device in its unsolicited position,
- FIG. 4 is a cross-section through plane A of this safety device in its requested position for blocking the curtain,
- and Figure 5 is a perspective view of the fixed flange of this safety device.
Le dispositif de sécurité conforme à l'invention représenté aux figures 2 à 4, est destiné à équiper un rideau de fermeture à effacement vertical représenté schématiquement à la figure 1, et comprenant classiquement :
- un tube fixe horizontal 1 s'étendant entre deux plaques latérales 2, 3,
- des ressorts de compensation tels que 4 logés chacun à l'intérieur d'une bobine telle que 5 et solidarisés à ladite bobine et au tube fixe 1,
- quatre plats bombés tels que 6, 7 de liaison des bobines 5, soudés sur ces dernières, et sur lesquels est solidarisée l'extrémité supérieure du tablier 8.
- a horizontal fixed tube 1 extending between two side plates 2, 3,
- compensation springs such as 4 each housed inside a coil such as 5 and secured to said coil and to the fixed tube 1,
- four curved plates such as 6, 7 for connecting the
coils 5, welded to the latter, and on which the upper end of the deck 8 is secured.
Ce dispositif de sécurité comprend en premier lieu un flasque
fixe 9 présentant la forme d'un disque 10 percé d'un orifice central de diamètre
sensiblement supérieur à celui du tube fixe 1, et soudé, sur le pourtour de cet orifice,
sur un fourreau 11 de diamètre interne conjugué du diamètre externe dudit tube fixe,
ledit fourreau étant percé d'orifices radiaux diamétralement opposés permettant de le
solidariser au tube fixe 1 au moyen d'un ensemble vis/écrou 11a. Ce flasque fixe 9
comprend, en outre, un rebord périphérique 12, présentant sensiblement sur un quart
de la circonférence dudit flasque, une portion 13 de moindre hauteur. Ce flasque fixe
9 comporte également deux échancrures périphériques (masquées sur les figures) en
regard desquelles la portion de rebord périphérique 13 est interrompue, lesdites
échancrures étant respectivement ménagées au niveau d'une des zones d'extrémité et
dans la zone centrale de cette portion de rebord périphérique 13.This safety device firstly comprises a flange
fixed 9 having the shape of a
Ce flasque fixe 9 comporte, enfin, deux pièces de butée 14, 15
en forme de L dont une des branches est soudée sur la face externe dudit flasque
fixe, et dont l'autre branche 14a, 15a est logée dans une échancrure, de façon à
former une butée de hauteur supérieure à celle du rebord périphérique 12, délimitant
avec ce dernier respectivement deux ouvertures radiales 16, 17. De plus, la face
latérale de cette branche 14a, 15a, de butée des éléments de blocage, présente un
évidemment 18 de section triangulaire, ménagé de façon à se trouver sur la
trajectoire desdits éléments de blocage.This
En outre, tel que représenté aux figures 2 et 4, le flasque fixe 9
est disposé de façon que la portion de rebord périphérique 13 s'étende, à partir de la
génératrice inférieure du disque 10, dans la portion gauche de cadran dudit disque, si
l'on considère le sens de descente du tablier 8 matérialisé par la flèche F.In addition, as shown in Figures 2 and 4, the fixed
Le dispositif de sécurité comporte également un deuxième
flasque mobile 19 agencé pour être soudé ou fixé au moyen de boulons sur la face
interne des plats bombés 6, 7 de liaison des bobines 5, de façon à être entraíné en
rotation avec ces dernières et le tablier 8, et disposé en regard du flasque fixe 9 de
façon à former un carter avec ce dernier.The safety device also includes a second
Ce flasque mobile 19 présente également la forme d'un disque
20 percé d'un orifice central permettant de le monter autour du tube fixe 1. De plus,
une cage de roulements à billes 22 est interposée entre le tube fixe 1 et le disque 20,
et maintenue sur ce dernier au moyen d'une plaque 21 formant cage externe.This
Ce flasque 19 comporte également un rebord périphérique
cylindrique 23 obtenu par pliage agencé pour venir coiffer radialement le rebord
périphérique 12 du flasque fixe 9, et pour être solidarisé aux plats bombés 6, 7.This
Ce flasque mobile 19 est par ailleurs équipé de trois couteaux
de blocage 25, 26, 27 rectilignes dotés d'une extrémité avant amincie en forme de
griffe telle que 25a. Chacun de ces couteaux 25-27 comporte également une
échancrure transversale 40 délimitant sa portion d'extrémité en forme de griffe 25a et
adaptée pour venir coiffer la branche 14a, 15a des pièces de butée 14, 15 lors du
blocage du dispositif. Cette échancrure 40 présente, en outre, une paroi de fond 40a
inclinée conjuguée de l'évidement 18 des pièces de butée 14, 15.This
Ces couteaux 25-27 sont montés sur le disque 20, au droit de
leur extrémité arrière par l'intermédiaire d'axes d'articulation consistant pour chacun
desdits couteaux, et tel que représenté à la figure 3, en un système vis 28/écrou 29 et
en trois rondelles 30, 31, 41 interposées de part et d'autre dudit disque et desdits
couteaux.These knives 25-27 are mounted on the
Tel que représenté aux figures, les axes d'articulation des
couteaux 25-27 sont uniformément répartis sur le disque 20 et forment les sommets
d'un triangle équilatéral centré sur l'axe dudit disque, de façon que lesdits couteaux
s'étendent selon des cordes de ce dernier, leur griffe 25a se trouvant à faible distance
radiale, de l'ordre de deux millimètres, du rebord périphérique 12 du flasque fixe 9.As shown in the figures, the axes of articulation of the
knives 25-27 are evenly distributed on the
En vue d'assurer le maintien des couteaux 25-27 dans cette position angulaire, chacun de ceux-ci est, en outre associé à :
- un ressort à spirale 32 s'étendant orthogonalement par rapport
audit couteau et dont les crochets d'extrémité sont engagés respectivement dans
un oeillet 33 solidaire du disque 20 et dans une lumière 34 ménagée dans chaque couteau 25-27 à faible distance de la griffe 25a, une butée 35, obtenue par découpe et pliage de petites portions de surface du disque 20, et ménagée de façon à être disposée à l'arrière de la griffe 25a de chaque couteau 25-27.
- a
spiral spring 32 extending orthogonally to said knife and the end hooks of which are engaged respectively in aneyelet 33 secured to thedisc 20 and in aslot 34 formed in each knife 25-27 at a short distance from theclaw 25a , - a
stop 35, obtained by cutting and folding small portions of the surface of thedisc 20, and arranged so as to be disposed behind theclaw 25a of each knife 25-27.
Tel que représenté à la figure 2, en fonctionnement normal du
rideau, c'est-à-dire pour des vitesses normales de déroulement du tablier 8, dans le
sens de la flèche F, les couteaux 25-27 sont maintenus en contact contre les butées
35 sous l'effet de l'action des ressorts 32. Il est à noter, en outre, que dans ces
conditions de fonctionnement, aucun élément rotatif n'est en contact avec un
quelconque élément fixe de sorte qu'il n'existe aucun risque d'usure. As shown in Figure 2, in normal operation of the
curtain, that is to say for normal speeds of unwinding of the deck 8, in the
direction of arrow F, the knives 25-27 are kept in contact against the
Par contre, en cas d'incident et d'augmentation de la vitesse de
déroulement au-delà d'une valeur prédéterminée qui peut être facilement calculée par
ajustement du tarage des ressorts 32, les couteaux 25-27 pivotent autour de leur axe
d'articulation, et un desdits couteaux, en l'exemple le couteau 25, vient en premier
lieu glisser sur la portion du rebord périphérique 13, dans l'ouverture radiale 16, puis
buter contre la pièce de butée 14, la deuxième pièce de butée 15 étant uniquement
prévue pour accroítre la sécurité.However, in the event of an incident and an increase in the speed of
unwinding beyond a predetermined value which can be easily calculated by
adjustment of the setting of the
Lors de ce contact entre le couteau 25 et la pièce de butée 14,
l'échancrure 40 vient coiffer la branche 14a de cette pièce de butée au niveau de
l'évidement 18 de sorte que la paroi de fond 40a de cette échancrure 40 encaisse le
premier choc de butée. Le second choc de butée est quant à lui encaissé par la paroi
transversale adjacente de cette échancrure 40 qui vient se plaquer radialement contre
la pièce de butée 14 et limite par la-même le pivotement du couteau 25. Enfin, et de
façon essentielle, tout risque de rebond est annulé du fait que l'extrémité en forme de
griffe 25a du couteau vient se glisser radialement à l'extérieur de la pièce de butée
14.During this contact between the
Un autre critère de sécurité garantissant le blocage du tablier 8
réside dans le fait que les pièces de butée 14, 15 sont disposées le long de la portion
de trajet ascendant des axes d'articulation des couteaux 25-27, si l'on considère le
sens de déroulement F. De ce fait, en effet, le poids des couteaux 25-27 s'additionne
à la force centrifuge et favorise donc le pivotement de ces derniers.Another safety criterion guaranteeing the blocking of the apron 8
resides in the fact that the
En dernier lieu, un des avantages primordiaux du dispositif de
sécurité selon l'invention réside dans le fait que, une fois le tablier 8 bloqué, tel que
représenté à la figure 4, le couteau 25 peut être débloqué très simplement en relevant
quelque peu ledit tablier, et ce dernier peut alors être descendu complètement de
façon manuelle, permettant ainsi un accès direct au système d'enroulement (ressorts
compensateurs 4...).Finally, one of the primary advantages of the
safety according to the invention resides in the fact that, once the apron 8 is blocked, such as
shown in Figure 4, the
Claims (10)
- Security device for a vertical closure comprising a curtain (8) mounted around a fixed tube (1), said security device being intended to avoid the fall of the curtain (8) in case of a failure of an element of the bearing system and being characterised in that it comprises in combination:a fixed flange (9) intended to be fixed around the fixed tube (1) et comprising, at least partially, a peripheral edge (12-15) provided with at least one radial opening (16-17), so called blocking opening, intended to be situated in a vertical plane (A),a movable flange (19) arranged around the fixed tube (1) in front of the fixed flange (9), and intended to be fixed to the curtain (8) so as to be driven in rotation with the latterat least one blocking element (25-27) articulated at one of its ends to the movable flange (19) around an axe parallel to the axe of the fixed tube (1), each of said blocking elements being placed in the vertical plane (A) and comprising a free end (25a) in the form of a claw adapted to penetrate into each radial opening (16-17) of the fixed flange (9) and to be blocked in said opening in a position in which at least a portion of said end in the form of a claw is the continuation of this opening radially outside the peripheral edge (12-15) delimiting the latter,and elastic means (32), associated to each blocking element (25-27), able to:maintain the blocking element (25-27) in a normal working position in which its free end (25a) moves on a circle, the centre of which is on the axe of the fixed tube (1) with a radius inferior to the radial distance between said axe and each radial opening (16-17), below a predetermined centrifugal force exerted onto said blocking element,enable a swivelling of the blocking element (25-27) so that its free end (25a) comes to be blocked in a radial opening (16-17) when the centrifugal force exceeds the predetermined threshold value.
- Security device according to claim 1, characterised in that each radial opening (16-17) of the fixed flange (9) is provided in a peripheral portion of said flange, arranged so as to be located along the ascending distance portion of the joint pin of each blocking element (25-27) in the descending direction of the curtain (8).
- Security device according to one of claims 1 or 2, characterised in that the fixed flange (9) is formed by a disk (10) having on its periphery spaced return elements (14-15), which are perpendicular to said disk and delimits slits forming the radial openings (16-17).
- Security device according to claims 2 and 3 considered together, characterised in that it comprises two return elements (14-15) provided substantially on a quarter of the circumference of the disk (10) extending from the lower generating line of the latter.
- Security device according to one of claims 3 or 4, characterised in that the movable flange (19) is formed by a disk (20) having a diameter substantially superior to that of the disk (10) of the fixed flange (9), provided with a peripheral edge (23) arranged to cover radially the radial openings (16-17) of said fixed flange.
- Security device according to anyone of preceding claims, characterised in that it comprises at least two blocking elements (25-27) the joint pins of which are distributed symmetrically relatively to the axe of the fixed tube (1) in the use position.
- Security device according to claim 6, characterised in that it comprises three blocking elements (25-27) the joint pins of which form the apexes of a equilateral triangle centred on the axe of the fixed tube (1) in the use position.
- Security device according to anyone of preceding claims, characterised in that each blocking element (25-27) is provided close by its end in the form of a claw (25a) with a cross indentation (40) able to cover the peripheral edge portion (12-15) of the fixed flange (9) delimiting a radial opening (16-17) after a swivelling of said blocking element (25-27).
- Security device according to claim 8, characterised in that the indentation (40) of each blocking element (25-27) has a bottom wall (40a) inclined backwards in reference to the rotation direction of said blocking element (25-27), the peripheral edge (12-15) of the fixed flange (9) having at the level of each radial opening (16-17) a bevelled edge (18) the inclination of which corresponds to that of said bottom wall.
- Security device according to one of claims 8 or 9, characterised in that:elastic means, associated to each blocking element (25-27), consists in a spring (32) provided to cause said blocking element to swivel in the use position in the direction of the axe of the fixed tube (1),the movable flange (19) has for each blocking element (25-27) a stop element (35) for limiting the swivelling of said blocking element under the action of the spring (32).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9709756A FR2766868B1 (en) | 1997-07-29 | 1997-07-29 | ANTI-FALL SAFETY DEVICE FOR VERTICAL CLOSING CURTAIN FITTED WITH A CURTAIN COMPENSATED BY SPRINGS MOUNTED AROUND A FIXED TUBE |
FR9709756 | 1997-07-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0894936A1 EP0894936A1 (en) | 1999-02-03 |
EP0894936B1 true EP0894936B1 (en) | 2003-03-12 |
Family
ID=9509847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98390012A Expired - Lifetime EP0894936B1 (en) | 1997-07-29 | 1998-07-27 | Fall protection device for vertically retractable closures with a shutter mounted on a fixed tube |
Country Status (7)
Country | Link |
---|---|
US (1) | US5971055A (en) |
EP (1) | EP0894936B1 (en) |
AT (1) | ATE234414T1 (en) |
DE (1) | DE69812008T2 (en) |
ES (1) | ES2194280T3 (en) |
FR (1) | FR2766868B1 (en) |
PT (1) | PT894936E (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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PT1102910E (en) * | 1998-07-27 | 2002-09-30 | Hoermann Kg | DEVICE FOR THE MONITORING OF A SPRING |
US6315089B1 (en) * | 1999-08-31 | 2001-11-13 | Morgan Marshall Industries, Inc. | Safety lock device with rotating clover mechanism |
EP1213428A1 (en) * | 2000-12-07 | 2002-06-12 | Flexi-Force B.V. | Drop-catch mechanism |
WO2003078773A1 (en) * | 2002-03-19 | 2003-09-25 | Canimex Inc. | Safety braking device for counterbalancing system of garage doors and the like |
US7543625B2 (en) * | 2002-03-19 | 2009-06-09 | Canimex Inc. | Brake device for garage doors and the like, and door assembly including the same |
FR2837866B1 (en) * | 2002-03-28 | 2005-09-23 | Simu | SAFETY DEVICE AND MANUFACTURING MECHANISM OF A CLOSURE OR SOLAR PROTECTION INSTALLATION INCORPORATING SUCH A DEVICE |
AUPS224902A0 (en) * | 2002-05-13 | 2002-06-13 | Ozroll Ip Pty Ltd | A shutter assembly |
US7254868B2 (en) * | 2004-12-27 | 2007-08-14 | Wayne-Dalton Corp. | winding and anti-drop assembly for door counterbalance system |
US7428918B2 (en) * | 2005-04-19 | 2008-09-30 | Martin Door Manufacturing, Inc. | Controlled descent device |
WO2007090271A1 (en) * | 2006-02-06 | 2007-08-16 | Canimex Inc. | Brake device for garage doors and the like, kit for assembling the same, and door assembly provided with the brake device |
TW201114629A (en) * | 2009-10-28 | 2011-05-01 | Macauto Ind Co Ltd | Vehicle safety protection device |
IT1401337B1 (en) * | 2010-07-29 | 2013-07-18 | Bat Spa | SAFETY DEVICE, FOR LOCKING THE ROTATION OF A WINDER ROLLER FOR CURTAINS, WITH AUTOMATIC REWINDING |
WO2012048361A1 (en) * | 2010-10-15 | 2012-04-19 | Chamberlain Australia Pty Ltd | A stop lock for use in a barrier system |
US20120168099A1 (en) * | 2011-01-04 | 2012-07-05 | Richard Anderson | Lock mechanism for a covering for architectural openings |
TWI494500B (en) * | 2013-10-14 | 2015-08-01 | Unidirectional centrifugal mechanism of door machine |
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US1842123A (en) * | 1929-02-25 | 1932-01-19 | Kinnear Mfg Co | Release and brake for fire resisting curtains |
US2019085A (en) * | 1931-12-23 | 1935-10-29 | R C Mahon Company | Governor for closure members |
DE2309225A1 (en) | 1973-02-24 | 1974-08-29 | Neukirchen W U H | DEVICE ON SHAFTS OF ROLLAEDEN ETC. |
US3842892A (en) * | 1973-07-27 | 1974-10-22 | Rcm Corp | Rolling door operating mechanism |
US4125142A (en) * | 1975-06-03 | 1978-11-14 | Repa Feinstanzwerk Gmbh | Safety device protecting roller blinds against unrolling |
US4112996A (en) * | 1975-06-03 | 1978-09-12 | Repa Feinstanzwerk Gmbh | Safety device for arresting unrolling of roller blinds |
US4704914A (en) * | 1986-03-21 | 1987-11-10 | Horng Jin Shan | Chain breakdown safety device for a power-driven roller door |
US5494093A (en) * | 1994-06-14 | 1996-02-27 | Wayne-Dalton Corp. | Rolling door stop apparatus |
-
1997
- 1997-07-29 FR FR9709756A patent/FR2766868B1/en not_active Expired - Fee Related
-
1998
- 1998-07-27 PT PT98390012T patent/PT894936E/en unknown
- 1998-07-27 DE DE69812008T patent/DE69812008T2/en not_active Expired - Lifetime
- 1998-07-27 ES ES98390012T patent/ES2194280T3/en not_active Expired - Lifetime
- 1998-07-27 EP EP98390012A patent/EP0894936B1/en not_active Expired - Lifetime
- 1998-07-27 AT AT98390012T patent/ATE234414T1/en active
- 1998-07-29 US US09/124,240 patent/US5971055A/en not_active Expired - Fee Related
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ATE234414T1 (en) | 2003-03-15 |
FR2766868B1 (en) | 1999-09-24 |
ES2194280T3 (en) | 2003-11-16 |
EP0894936A1 (en) | 1999-02-03 |
US5971055A (en) | 1999-10-26 |
DE69812008D1 (en) | 2003-04-17 |
FR2766868A1 (en) | 1999-02-05 |
PT894936E (en) | 2003-06-30 |
DE69812008T2 (en) | 2004-01-15 |
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