EP1766178A1 - Fast door with secure operation - Google Patents

Fast door with secure operation

Info

Publication number
EP1766178A1
EP1766178A1 EP05756720A EP05756720A EP1766178A1 EP 1766178 A1 EP1766178 A1 EP 1766178A1 EP 05756720 A EP05756720 A EP 05756720A EP 05756720 A EP05756720 A EP 05756720A EP 1766178 A1 EP1766178 A1 EP 1766178A1
Authority
EP
European Patent Office
Prior art keywords
strap
screen
door according
door
cylinder
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.)
Withdrawn
Application number
EP05756720A
Other languages
German (de)
French (fr)
Inventor
Bernard Kraeutler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nergeco SA
Original Assignee
Nergeco SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nergeco SA filed Critical Nergeco SA
Publication of EP1766178A1 publication Critical patent/EP1766178A1/en
Withdrawn legal-status Critical Current

Links

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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/003—Anti-dropping devices
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • 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
    • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/658—Members cooperating with flexible elongated pulling elements
    • E05Y2201/672—Tensioners, tension sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Definitions

  • the present invention relates to a fast door whose operation is secure.
  • doors comprising a flexible screen that can quickly move from a closed position to an open position
  • a constant concern is securing the operation of these doors.
  • These doors can be made to perform a large number of opening / closing cycles and one can deplore failures that can result in a rapid descent of the screen. This fall of the screen can be done on a person and may hurt it.
  • the strap which is connected to the base of the screen is no longer subjected to its normal tension given by the weight of the screen, which then triggers an alarm, - an attempt to intrude by lifting the lower edge of the door.
  • the lifting of the door causes a drop in tension of the strap which then triggers an alert, - a rupture of a traction strap.
  • the movable member as described in document EP-A-819 204, is generally satisfactory in that it makes it possible to trigger an alarm in the event of an obstacle placed on the descent path of the screen or in case of intrusion. Nevertheless, the reliability of this organ can be improved.
  • An object of the invention is therefore to provide a rapid door having a safety device operating by monitoring the tension of a strap which is of a very high reliability.
  • the subject of the invention is essentially a fast door, closing a bay formed in a partition comprising, a flexible screen, means for raising the screen comprising, inter alia, a winding shaft fixed at a level lintel of the door, and a strap whose one end is fixed on the winding shaft and whose other end is fixed to the base of the screen, characterized in that the strap travels through a detector of voltage comprising a movable element having an opening in which the strap is engaged, the movable element being held in a first position said normal operating by the strap, the latter being subjected to a normal operating voltage, the movable member tilting in a position called abnormal operation, when the strap has a voltage below a predetermined threshold corresponding to an abnormal operation of the door.
  • the idea underlying the invention is to engage a strap in a voltage detector that switches when the tension of the strap is not equal to the normal voltage.
  • the voltage detector does not interfere with door operation when operating in a normal mode.
  • the screen meets an obstacle during its descent, the tree continues its rotation and the strap passing through the voltage detector relaxes invariably causing a tilting thereof.
  • the voltage detector switches to its abnormal operating position, also, in the case of an attempted intrusion by the lower edge of the screen. Raising the lower edge of the screen also causes a drop in tension in the strap passing through the voltage detector.
  • the high reliability of the voltage detector of the door is due to the fact that the strap passes directly into a movable element whose tilting makes it possible to signal an abnormal operation of the door.
  • the movable element of the voltage detector is biased towards the second so-called abnormal operating position by a return spring.
  • moving the movable member from its normal operating position to its abnormal operating position triggers an alert.
  • the voltage detector comprises a cylinder movable in rotation about its axis, in which is formed a slot passing through its axis and in which the strap is engaged. This embodiment is extremely advantageous in terms of reliability of operation and space, which allows to equip existing doors with a voltage detector according to the invention.
  • the movable cylinder is supported by two flanges.
  • An advantageous characteristic of the invention provides that the cylinder is provided with a stud passing through an arcuate groove formed in one of the flanges, this stud coming into contact with a finger connected to warning means, when the cylinder is in the abnormal operating position. By adjusting the position of the finger, it is thus possible to adjust the sensitivity of the device. Depending on the settings, a small angular stroke of the pin (and therefore of the cylinder) or a large angular stroke of the pin may, at the option of a user, trigger an alert. It is noted that the detector has at least one cylindrical roller for guiding the strap towards the mobile cylinder.
  • the detector is an autonomous element that can be easily installed on an existing door.
  • the door is a folding door
  • the strap serving as a means of pulling the screen
  • - the door is a roll-up door
  • the strap serving as a strap to the good tension of the screen.
  • the strap could present a security problem especially if a person came to pass an arm in the latter.
  • the strap is attached to the lower edge of the screen by connecting means capable of breaking under a predetermined force.
  • the connecting means consist of two elements of self-gripping material of the loop and hook type placed respectively at the end of the strip and on the screen;
  • the connecting means consist of two magnetic elements; of different polarity placed respectively at the end of the strip and on the screen, - the connecting means are constituted by a ruptible zone in the band.
  • FIG. 1 is a side view of a door at the top
  • Figure 2 is a perspective view of a voltage detector fitted to this door
  • Figure 3 is a cross-sectional view of the detector in a first position.
  • Figure 4 is a cross sectional view of this detector in a second position thereof
  • Figure 5 to 7 schematically illustrate the operation of rolling or folding doors in normal and abnormal mode.
  • FIG. 1 shows a folding door comprising a winding shaft 2 on which strips 3 and 7 are wound.
  • this door has a cowling 4 and uprights 5 serving to guide the lateral edges of the door. 'screen.
  • Figure 1 shows only the upper part of this door, this door also having quite conventional characteristics.
  • this door is distinguished in that it is equipped with a voltage detector 6 of the strap 7.
  • This voltage detector 6 is embedded on the door at the level of his lintel.
  • the so-called traction strap 7 is fixed, on the one hand, to the winding shaft 2 and, on the other hand, on the screen at the lower edge 8 of this one.
  • the pull strap 7 is held taut by the weight of the screen which, in many cases, incorporates transverse stiffening bars.
  • the strap 3 doubles the traction strap 7 and has the function of preventing the screen from falling in the event of rupture or distension of the strap 7.
  • FIG. 2 shows, in more detail, the voltage detector 6 on board level of the lintel of the door of Figure 1.
  • This voltage detector 6 has a cylinder 8 in which is formed a slot 9 diametrical through the cylinder 8.
  • the cylinder 8 is supported by two flanges 10, themselves fixed on a plate background 1 1.
  • the cylinder is connected to each of the flanges 10 by a pivot connection which allows rotation of the cylinder relative thereto.
  • a return spring urges the cylinder 8 into a position in which the slot 9 is oriented in a direction perpendicular to the bottom plate January 1.
  • one of the flanges is provided with a groove 13 in the form of an arc in which a stud 14 integral with the cylinder 8 passes. This groove 13 extends over an angular sector of the order of 180 ° and corresponds to the two extreme positions of the cylinder 8.
  • the flange 10 supports a sensor 17 which is associated with a finger 16 which is on the stroke of the stud 14. It is also noted that the voltage detector 6 is equipped with two cylindrical rollers 19 placed on either side of the cylinder 8. The operation of the voltage detector is therefore as follows. As can be seen in FIG. 1, the voltage detector 6 is extremely compact. In normal operation of the door, the voltage detector 6 is in a configuration shown in FIG. 3. In this mode of operation, the strap 7 provides an orientation of the slot 9 formed in the cylinder such that the slot is substantially parallel at the bottom plate. This orientation of the cylinder is due exclusively to the action of the strap 7. In this configuration, the strap 7 slides in the voltage detector according to the upward or downward movements of the screen 21.
  • FIG. 4 illustrates the configuration of the voltage detector 6.
  • the stud 14 comes during its course in the groove 13 in the form of an arc in contact with the finger 16 which acts on the sensor 17. The latter orders an alert action which, in the example shown in Figure 5, is the ignition of a bulb 22.
  • alarms can then be triggered: it can be an alarm sound ; it can also be ordered to the motor controlling the rotation of the shaft 2 to immediately stop its action or to reverse its direction of rotation to raise the screen 21 by an unbroken 3 traction strap.
  • the detector of voltage 6 acts in the same way. Indeed, due to the lifting of the lower edge of the screen 21 at which one end of the strap 7 is fixed, there is a decrease in the tension thereof. When this drop in voltage reaches a certain value, the return spring acts on the cylinder 8 and tilts it to its position in which it is illustrated in FIG. 4.
  • the voltage detector 6 as shown, is a compact module that can equip existing doors, which lack a security system.
  • this voltage detector can equip both rolling doors, as shown in FIGS. 6 and 7, that is to say doors in which the screen 21.
  • the door is equipped with a control strap 25, which does not participate in raising the screen 21, but only follows the movements of the screen and is thus representative of a normal operation of the screen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Burglar Alarm Systems (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The invention concerns a fast door, closing an opening provided in a partition, comprising a soft screen (21), means for lifting the screen including, among others, a winding shaft (2) fixed at the door lintel, and a strap (7) whereof one end is fixed to the winding shaft (2) and the other end is fixed to the screen lower edge (8). The invention is characterized in that the strap (7) passes through a tension sensor (6) comprising a mobile element having an opening wherein the strap (7) is engaged, the mobile element being maintained in a first so-called normal operating position by the strap (7), the latter being subjected to a normal operating tension, the mobile element tilting into a so-called abnormal operating position, when the strap (7) shows a tension lower than a predetermined threshold corresponding to an abnormal operation of the door.

Description

PORTE RAPIDE A FONCTIONNEMENT SECURISE La présente invention concerne une porte rapide dont le fonctionnement est sécurisé. Dans le domaine technique des portes rapides, c'est-à-dire des portes comprenant un écran souple qui peut passer rapidement d'une position de fermeture à une position d'ouverture, une préoccupation constante est la sécurisation du fonctionnement de ces portes. Ces portes peuvent être amenées à réaliser de grand nombre de cycles d'ouverture/fermeture et on peut déplorer des défaillances qui peuvent avoir pour conséquence une descente rapide de l'écran. Cette chute de l'écran peut se faire sur une personne et risque de la blesser. Dans le cas d'une porte à enroulement, c'est-à-dire une porte dont le relèvement est réalisé par la rotation d'un arbre sur lequel s'enroule l'écran, on connaît par le document EP-A-819 204 de placer une sangle témoin dont une extrémité est fixée sur l'arbre d'enroulement, tandis que l'autre extrémité est fixée à la base de l'écran. Cette sangle témoin n'a aucune action dans le relèvement de l'écran. En revanche, elle s'avère extrêmement utile en cas de dysfonctionnement de la porte. En effet, cette sangle est couplée à un organe mobile qui se place dans une position d'alerte lorsque la tension de la sangle est inférieure à une tension prédéterminée. Dans le cas d'une porte à repliement, c'est à dire une porte dont le relèvement est réalisé par des sangles de traction reliées d'une part à l'arbre d'enroulement et d'autre part au bord inférieur de l'écran, on peut coupler l'une ou toutes ces sangles à l'organe mobile que l'on connaît par le document EP-A-819 204. Ce dernier se place dans une position d'alerte lorsque la tension dans l'une des sangles est inférieure à une tension prédéterminée. La baisse de la tension dans la sangle témoin ou dans l'une des sangles de traction peut être due à plusieurs causes. Il peut s'agir : - d'un obstacle dans le passage de la porte. L'écran s'abaisse alors sur cet obstacle. L'arbre continue alors sa rotation sans que l'écran n'atteigne le sol. La sangle, qui est reliée à la base de l'écran n'est plus soumise à sa tension normale donnée par le poids de l'écran, ce qui déclenche alors une alarme, - d'une tentative d'intrusion par soulèvement du bord inférieur de la porte. Le soulèvement de la porte entraîne une baisse de tension de ia sangle qui déclenche alors une alerte, - d'une rupture d'une sangle de traction. L'organe mobile, tel qu'il est décrit dans le document EP-A-819 204, donne globalement satisfaction dans la mesure où il permet de déclencher une alarme en cas d'obstacle placé sur la trajectoire de descente de l'écran ou en cas d'intrusion. Néanmoins, la fiabilité de cet organe peut être améliorée. Un but de l'invention est donc de fournir une porte rapide présentant un dispositif de sécurité fonctionnant par surveillance de la tension d'une sangle qui soit d'une très grande fiabilité. Un autre but de l'invention est de proposer un dispositif de sécurité qui puisse être facilement adapté sur des portes rapides existantes. A cet effet, l'invention a essentiellement pour objet une porte rapide, fermant une baie ménagée dans une cloison comprenant, un écran souple, des moyens de relevage de l'écran comprenant entre autres un arbre d'enroulement fixé au niveau d'un linteau de la porte, et une sangle dont une extrémité est fixée sur l'arbre d'enroulement et dont l'autre extrémité est fixée à la base de l'écran, caractérisée en ce que la sangle chemine au travers d'un détecteur de tension comprenant un élément mobile présentant une ouverture dans laquelle la sangle est engagée, l'élément mobile étant maintenu dans une première position dite de fonctionnement normal par la sangle, celle-ci étant soumise à une tension de fonctionnement normal, l'élément mobile basculant dans une position dite de fonctionnement anormal, lorsque la sangle présente une tension inférieure à un seuil prédéterminé correspondant à un fonctionnement anormal de la porte. Ainsi, l'idée à la base de l'invention est d'engager une sangle dans un détecteur de tension qui bascule lorsque la tension de la sangle n'est pas égale à la tension normale. Le détecteur de tension n'interfère pas avec le fonctionnement de la porte lorsque celle-ci fonctionne selon un mode normal. En revanche, lorsque l'écran rencontre un obstacle au cours de sa descente, l'arbre poursuit sa rotation et la sangle passant au travers du détecteur de tension se détend provoquant immanquablement un basculement de celui-ci. Le détecteur de tension bascule vers sa position de fonctionnement anormal, également, dans le cas d'une tentative d'intrusion par le bord inférieur de l'écran. Un soulèvement du bord inférieur de l'écran provoque également une baisse de tension dans la sangle passant au travers du détecteur de tension. La grande fiabilité de détecteur de tension de la porte, selon l'invention, tient au fait que la sangle passe directement dans un élément mobile dont le basculement permet de signaler un fonctionnement anormal de la porte. Selon une forme de réalisation avantageuse, l'élément mobile du détecteur de tension est sollicité vers la deuxième position dite de fonctionnement anormal par un ressort de rappel. De préférence, le déplacement de l'élément mobile de sa position de fonctionnement normal à sa position de fonctionnement anormal déclenche une alerte. Dans une forme de réalisation, le détecteur de tension comprend un cylindre mobile en rotation autour de son axe, dans lequel est ménagée une fente passant par son axe et dans laquelle est engagée la sangle. Cette forme de réalisation s'avère extrêmement avantageuse en terme de fiabilité de fonctionnement et d'encombrement, ce qui permet d'équiper des portes existantes avec un détecteur de tension selon l'invention. En outre, on note que le cylindre mobile est supporté par deux flasques. Une caractéristique avantageuse de l'invention prévoit que le cylindre est muni d'un téton traversant une rainure en arc de cercle ménagée dans l'un des flasques, ce téton venant en contact d'un doigt connecté à des moyens d'alerte, lorsque le cylindre est dans la position de fonctionnement anormal. En réglant la position du doigt, il est ainsi possible de régler la sensibilité du dispositif. Selon les réglages, une faible course angulaire du téton (et donc du cylindre) ou une importante course angulaire du téton peut, au choix d'un utilisateur, déclencher une alerte. On note que le détecteur présente au moins un galet cylindrique permettant le guidage de la sangle vers le cylindre mobile. Par cette caractéristique on voit encore que le détecteur est un élément autonome qui peut être très facilement installé sur une porte existante. Selon deux réalisations possibles : - la porte est une porte à repliement, la sangle servant de moyens de traction de l'écran, - la porte est une porte à enroulement, la sangle servant de sangle témoin de la bonne tension de l'écran. Dans ce dernier cas de figure, la sangle pourrait présenter un problème de sécurité notamment si une personne venait à passer un bras dans cette dernière. Pour éviter ce type d'inconvénient, il peut être envisagée que la sangle soit fixée au bord inférieur de l'écran par des moyens de liaison susceptible de se rompre sous un effort prédéterminé. Selon plusieurs possibilités : - les moyens de liaisons sont constitués de deux éléments de matériau auto-agrippant de type boucles et crochets placés respectivement à l'extrémité de la bande et sur l'écran, - les moyens de liaisons sont constitués de deux éléments magnétiques de polarité différente placés respectivement à l'extrémité de la bande et sur l'écran, - les moyens de liaisons sont constitués par une zone ruptible ménagée dans la bande. Ainsi, le problème de sécurité est réglé et dans le cas d'une rupture de la liaison entre la sangle et l'écran, la sangle ne présente plus de tension ; le dispositif détecteur de tension se place alors de sa configuration de fonctionnement anormal. Pour sa bonne compréhension, l'invention est décrite en référence au dessin ci annexé représentant, à titre d'exemple non limitatif, plusieurs formes de réalisation de portes selon l'invention. Figure 1 est une vue de côté d'une porte au niveau de la partie supérieure, Figure 2 est une vue en perspective d'un détecteur de tension équipant cette porte, Figure 3 est une vue en coupe transversale de ce détecteur dans une première position, Figure 4 est une vue en coupe transversale de ce détecteur dans une deuxième position de celui-ci, Figure 5 à 7 illustrent schématiquement le fonctionnement de portes à enroulement ou à repliement en mode normal et anormal. Dans la description qui va suivre, les éléments communs aux différentes formes de réalisation portent des numéros de référence identiques. En figure 1 , est représentée une porte à repliement comprenant un arbre 2 d'enroulement sur lequel s'enroulent des sangles 3 et 7. De manière habituelle, cette porte présente un capotage 4 et des montants 5 servant à guider les bords latéraux de l'écran. La figure 1 ne représente que la partie supérieure de cette porte, cette porte présentant par ailleurs des caractéristiques tout à fait classiques. En revanche, et comme on peut le voir sur la figure 1 , cette porte se distingue dans la mesure où elle est équipée d'un détecteur de tension 6 de la sangle 7. Ce détecteur de tension 6 est embarqué sur la porte au niveau de son linteau. Comme on peut le voir sur la figure 5, la sangle 7 dite de traction est fixée, d'une part, sur l'arbre d'enroulement 2 et, d'autre part, sur l'écran au niveau du bord inférieur 8 de celui-ci. La sangle de traction 7 est maintenue tendue par le poids de l'écran qui, dans de nombreux cas, incorpore des barres de raidissement transversales. La sangle 3 double la sangle de traction 7 et a pour fonction d'éviter la chute de l'écran en cas de rupture ou de distension de la sangle 7. La figure 2 montre, plus en détails, le détecteur de tension 6 embarqué au niveau du linteau de la porte de la figure 1. Ce détecteur de tension 6 présente un cylindre 8 dans lequel est ménagée une fente 9 diamétrale traversant le cylindre 8. Le cylindre 8 est supporté par deux flasques 10, eux-mêmes fixés sur une plaque de fond 1 1 . Le cylindre est relié à chacun des flasques 10 par une liaison pivot qui autorise une rotation du cylindre par rapport à ceux-ci. Un ressort de rappel sollicite le cylindre 8 dans une position dans laquelle la fente 9 est orientée dans une direction perpendiculaire à la plaque de fond 1 1 . On note, par ailleurs, que l'un des flasques est pourvu d'une rainure 13 en arc de cercle dans laquelle passe un téton 14 solidaire du cylindre 8. Cette rainure 13 s'étend sur un secteur angulaire de l'ordre de 180° et correspond aux deux positions extrêmes du cylindre 8. Le flasque 10 supporte un capteur 17 auquel est adjoint un doigt 16 qui se trouve sur la course du téton 14. On note également que le détecteur de tension 6 est équipé de deux galets cylindriques 19 placés de part et d'autre du cylindre 8. Le fonctionnement du détecteur de tension est donc le suivant. Comme on peut le voir sur la figure 1 , le détecteur de tension 6 est extrêmement compact. En fonctionnement normal de la porte, le détecteur de tension 6 se trouve dans une configuration illustrée par la figure 3. Dans ce mode de fonctionnement, la sangle 7 assure une orientation de la fente 9 ménagée dans le cylindre telle que la fente est sensiblement parallèle à la plaque de fond. Cette orientation du cylindre est due exclusivement à l'action de la sangle 7. Dans cette configuration, la sangle 7 glisse dans le détecteur de tension selon les mouvements vers le haut ou vers le bas de l'écran 21 . On note, par ailleurs, que dans cette configuration, le téton 14 se trouve en fond de course de la rainure en arc de cercle. Dans le cas d'un événement anormal, par exemple une rupture de la sangle 7 comme illustré à la figure 5, la sangle 7 qui est rompue est alors sans aucune tension. La conséquence de cette absence de tension dans la sangle 7 est que le ressort de rappel qui agit sur le cylindre 8 du détecteur de tension 6 fait pivoter ce dernier. La figure 4 illustre alors la configuration du détecteur de tension 6. Au cours de la rotation du cylindre, le téton 14 vient au cours de sa course dans la rainure 13 en arc de cercle en contact du doigt 16 qui agit sur le capteur 17. Ce dernier ordonne une action d'alerte qui, dans l'exemple représenté à la figure 5, est l'allumage d'une ampoule 22. Plusieurs types d'alarmes peuvent alors être déclenchés : il peut s'agir d'une alarme sonore ; il peut également être ordonné au moteur commandant la rotation de l'arbre 2 de cesser immédiatement son action ou d'inverser son sens de rotation pour remonter l'écran 21 par une sangle 3 de traction non rompue. Dans un autre cas de fonctionnement anormal de l'écran, c'est-à-dire lors d'une tentative d'intrusion par un soulèvement du bord inférieur 8 de l'écran 21 lorsque la porte est en position fermée, le détecteur de tension 6 agit de la même manière. En effet, du fait du soulèvement du bord inférieur de l'écran 21 auquel une extrémité de la sangle 7 est fixée, il se produit une baisse de Ia tension de celle-ci. Lorsque cette baisse de tension atteint une certaine valeur, le ressort de rappel agit sur le cylindre 8 et fait basculer celui-ci vers sa position dans laquelle il se trouve illustré à la figure 4. Ceci peut également déclencher une alarme visuelle 22 ou sonore indiquant une anomalie sur la porte en question. Un avantage qu'il est important de noter est que le détecteur de tension 6 tel qu'il est représenté, constitue un module de faible encombrement qui peut équiper des portes existantes, qui sont dépourvues de système de sécurité. En outre, il doit être précisé que ce détecteur de tension peut équipé aussi bien des portes à enroulement, comme le montrent les figures 6 et 7, c'est-à-dire des portes dans lesquelles l'écran 21 . Dans ce cas, la porte est équipée d'une sangle témoin 25, qui ne participe pas au relèvement de l'écran 21 , mais ne fait que suivre les mouvements de l'écran et est ainsi représentative d'un fonctionnement normal de l'écran. Lorsque l'écran s'abaisse sur un obstacle 20, comme le montre la figure 7, Ia rotation de l'arbre 2 se poursuit et la sangle 25 n'est plus sous tension par le poids de l'écran 21 . La conséquence de cette baisse de tension est que le ressort de rappel qui agit sur le cylindre 8 du détecteur de tension 6 fait pivoter ce dernier jusqu'à ce qu'il se retrouve dans la configuration illustrée figure 4. Cela peut alors déclencher une alarme sonore, visuelle ou déclencher une action de remontée de l'écran 21 . L'invention décrite présente les nombreux avantages décrits précédemment. En effet, les portes ainsi définies (qu'elles soient à repliement ou à enroulement) présentent donc un fonctionnement sécurisé dans la mesure où tout dysfonctionnement de l'écran est détecté avec une grande fiabilité. Bien entendu, l'invention n'est pas limitée à la porte décrite précédemment, à titre d'exemple non limitatif, mais elle en embrasse au contraire toutes les variantes de réalisation. The present invention relates to a fast door whose operation is secure. In the technical field of rapid doors, that is to say, doors comprising a flexible screen that can quickly move from a closed position to an open position, a constant concern is securing the operation of these doors. These doors can be made to perform a large number of opening / closing cycles and one can deplore failures that can result in a rapid descent of the screen. This fall of the screen can be done on a person and may hurt it. In the case of a roll-up door, that is to say a door whose raising is achieved by the rotation of a shaft on which the screen is wound, is known from EP-A-819 204 to place a control strap whose one end is fixed on the winding shaft, while the other end is fixed to the base of the screen. This control strap has no action in raising the screen. On the other hand, it is extremely useful in the event of a malfunction of the door. Indeed, this strap is coupled to a movable member which is placed in an alert position when the tension of the strap is less than a predetermined tension. In the case of a folding door, that is to say a door whose raising is carried out by traction straps connected on the one hand to the winding shaft and on the other hand to the lower edge of the screen, we can couple one or all of these straps to the movable member that is known from EP-A-819 204. The latter is placed in an alert position when the voltage in one of the straps is less than a predetermined tension. The drop in tension in the control strap or in one of the pull straps may be due to several causes. It can be: - an obstacle in the passage of the door. The screen then lowers on this obstacle. The tree then continues its rotation without the screen reaching the ground. The strap, which is connected to the base of the screen is no longer subjected to its normal tension given by the weight of the screen, which then triggers an alarm, - an attempt to intrude by lifting the lower edge of the door. The lifting of the door causes a drop in tension of the strap which then triggers an alert, - a rupture of a traction strap. The movable member, as described in document EP-A-819 204, is generally satisfactory in that it makes it possible to trigger an alarm in the event of an obstacle placed on the descent path of the screen or in case of intrusion. Nevertheless, the reliability of this organ can be improved. An object of the invention is therefore to provide a rapid door having a safety device operating by monitoring the tension of a strap which is of a very high reliability. Another object of the invention is to provide a safety device that can be easily adapted to existing high speed doors. For this purpose, the subject of the invention is essentially a fast door, closing a bay formed in a partition comprising, a flexible screen, means for raising the screen comprising, inter alia, a winding shaft fixed at a level lintel of the door, and a strap whose one end is fixed on the winding shaft and whose other end is fixed to the base of the screen, characterized in that the strap travels through a detector of voltage comprising a movable element having an opening in which the strap is engaged, the movable element being held in a first position said normal operating by the strap, the latter being subjected to a normal operating voltage, the movable member tilting in a position called abnormal operation, when the strap has a voltage below a predetermined threshold corresponding to an abnormal operation of the door. Thus, the idea underlying the invention is to engage a strap in a voltage detector that switches when the tension of the strap is not equal to the normal voltage. The voltage detector does not interfere with door operation when operating in a normal mode. On the other hand, when the screen meets an obstacle during its descent, the tree continues its rotation and the strap passing through the voltage detector relaxes invariably causing a tilting thereof. The voltage detector switches to its abnormal operating position, also, in the case of an attempted intrusion by the lower edge of the screen. Raising the lower edge of the screen also causes a drop in tension in the strap passing through the voltage detector. The high reliability of the voltage detector of the door, according to the invention, is due to the fact that the strap passes directly into a movable element whose tilting makes it possible to signal an abnormal operation of the door. According to an advantageous embodiment, the movable element of the voltage detector is biased towards the second so-called abnormal operating position by a return spring. Preferably, moving the movable member from its normal operating position to its abnormal operating position triggers an alert. In one embodiment, the voltage detector comprises a cylinder movable in rotation about its axis, in which is formed a slot passing through its axis and in which the strap is engaged. This embodiment is extremely advantageous in terms of reliability of operation and space, which allows to equip existing doors with a voltage detector according to the invention. In addition, it is noted that the movable cylinder is supported by two flanges. An advantageous characteristic of the invention provides that the cylinder is provided with a stud passing through an arcuate groove formed in one of the flanges, this stud coming into contact with a finger connected to warning means, when the cylinder is in the abnormal operating position. By adjusting the position of the finger, it is thus possible to adjust the sensitivity of the device. Depending on the settings, a small angular stroke of the pin (and therefore of the cylinder) or a large angular stroke of the pin may, at the option of a user, trigger an alert. It is noted that the detector has at least one cylindrical roller for guiding the strap towards the mobile cylinder. By this characteristic we can still see that the detector is an autonomous element that can be easily installed on an existing door. According to two possible embodiments: - the door is a folding door, the strap serving as a means of pulling the screen, - the door is a roll-up door, the strap serving as a strap to the good tension of the screen. In the latter case, the strap could present a security problem especially if a person came to pass an arm in the latter. To avoid this type of inconvenience, it may be envisaged that the strap is attached to the lower edge of the screen by connecting means capable of breaking under a predetermined force. According to several possibilities: the connecting means consist of two elements of self-gripping material of the loop and hook type placed respectively at the end of the strip and on the screen; the connecting means consist of two magnetic elements; of different polarity placed respectively at the end of the strip and on the screen, - the connecting means are constituted by a ruptible zone in the band. Thus, the security problem is adjusted and in the case of a rupture of the connection between the strap and the screen, the strap no longer has tension; the voltage detector device then moves from its abnormal operating configuration. For a good understanding, the invention is described with reference to the accompanying drawing showing, by way of non-limiting example, several embodiments of doors according to the invention. Figure 1 is a side view of a door at the top, Figure 2 is a perspective view of a voltage detector fitted to this door, Figure 3 is a cross-sectional view of the detector in a first position. , Figure 4 is a cross sectional view of this detector in a second position thereof, Figure 5 to 7 schematically illustrate the operation of rolling or folding doors in normal and abnormal mode. In the following description, the elements common to the various embodiments bear identical reference numbers. FIG. 1 shows a folding door comprising a winding shaft 2 on which strips 3 and 7 are wound. Usually, this door has a cowling 4 and uprights 5 serving to guide the lateral edges of the door. 'screen. Figure 1 shows only the upper part of this door, this door also having quite conventional characteristics. However, and as can be seen in Figure 1, this door is distinguished in that it is equipped with a voltage detector 6 of the strap 7. This voltage detector 6 is embedded on the door at the level of his lintel. As can be seen in FIG. 5, the so-called traction strap 7 is fixed, on the one hand, to the winding shaft 2 and, on the other hand, on the screen at the lower edge 8 of this one. The pull strap 7 is held taut by the weight of the screen which, in many cases, incorporates transverse stiffening bars. The strap 3 doubles the traction strap 7 and has the function of preventing the screen from falling in the event of rupture or distension of the strap 7. FIG. 2 shows, in more detail, the voltage detector 6 on board level of the lintel of the door of Figure 1. This voltage detector 6 has a cylinder 8 in which is formed a slot 9 diametrical through the cylinder 8. The cylinder 8 is supported by two flanges 10, themselves fixed on a plate background 1 1. The cylinder is connected to each of the flanges 10 by a pivot connection which allows rotation of the cylinder relative thereto. A return spring urges the cylinder 8 into a position in which the slot 9 is oriented in a direction perpendicular to the bottom plate January 1. It should be noted, moreover, that one of the flanges is provided with a groove 13 in the form of an arc in which a stud 14 integral with the cylinder 8 passes. This groove 13 extends over an angular sector of the order of 180 ° and corresponds to the two extreme positions of the cylinder 8. The flange 10 supports a sensor 17 which is associated with a finger 16 which is on the stroke of the stud 14. It is also noted that the voltage detector 6 is equipped with two cylindrical rollers 19 placed on either side of the cylinder 8. The operation of the voltage detector is therefore as follows. As can be seen in FIG. 1, the voltage detector 6 is extremely compact. In normal operation of the door, the voltage detector 6 is in a configuration shown in FIG. 3. In this mode of operation, the strap 7 provides an orientation of the slot 9 formed in the cylinder such that the slot is substantially parallel at the bottom plate. This orientation of the cylinder is due exclusively to the action of the strap 7. In this configuration, the strap 7 slides in the voltage detector according to the upward or downward movements of the screen 21. Note, moreover, that in this configuration, the pin 14 is at the bottom of the race of the arcuate groove. In the case of an abnormal event, for example a rupture of the strap 7 as shown in Figure 5, the strap 7 which is broken is then without any tension. The consequence of this lack of tension in the strap 7 is that the return spring acting on the cylinder 8 of the voltage detector 6 rotates the latter. FIG. 4 then illustrates the configuration of the voltage detector 6. During the rotation of the cylinder, the stud 14 comes during its course in the groove 13 in the form of an arc in contact with the finger 16 which acts on the sensor 17. The latter orders an alert action which, in the example shown in Figure 5, is the ignition of a bulb 22. Several types of alarms can then be triggered: it can be an alarm sound ; it can also be ordered to the motor controlling the rotation of the shaft 2 to immediately stop its action or to reverse its direction of rotation to raise the screen 21 by an unbroken 3 traction strap. In another case of abnormal operation of the screen, that is to say during an attempt to intrude by raising the lower edge 8 of the screen 21 when the door is in the closed position, the detector of voltage 6 acts in the same way. Indeed, due to the lifting of the lower edge of the screen 21 at which one end of the strap 7 is fixed, there is a decrease in the tension thereof. When this drop in voltage reaches a certain value, the return spring acts on the cylinder 8 and tilts it to its position in which it is illustrated in FIG. 4. This can also trigger a visual alarm 22 or sound indicating an anomaly on the door in question. An advantage that is important to note is that the voltage detector 6 as shown, is a compact module that can equip existing doors, which lack a security system. In addition, it should be pointed out that this voltage detector can equip both rolling doors, as shown in FIGS. 6 and 7, that is to say doors in which the screen 21. In this case, the door is equipped with a control strap 25, which does not participate in raising the screen 21, but only follows the movements of the screen and is thus representative of a normal operation of the screen. When the screen lowers on an obstacle 20, as shown in FIG. 7, the rotation of the shaft 2 continues and the strap 25 is no longer under tension by the weight of the screen 21. The consequence of this drop in voltage is that the return spring acting on the cylinder 8 of the voltage detector 6 rotates the latter until it is in the configuration shown in FIG. 4. This can then trigger an alarm. sound, visual or trigger an action of raising the screen 21. The described invention has the many advantages described above. Indeed, the doors thus defined (they are folding or winding) thus have a secure operation insofar as any malfunction of the screen is detected with great reliability. Of course, the invention is not limited to the door described above, by way of non-limiting example, but it encompasses all variants.

Claims

REVENDICATIONS 1. Porte rapide, fermant une baie ménagée dans une cloison comprenant, un écran souple (21 ), des moyens de relevage de l'écran comprenant, entre autres, un arbre (2) d'enroulement fixé au niveau d'un linteau de la porte, et une sangle (7, 25) dont une extrémité est fixée sur l'arbre (2) d'enroulement et dont l'autre extrémité est fixée sur le bord inférieur (8) de l'écran, caractérisée en ce que la sangle (7, 25) chemine au travers d'un détecteur de tension (6) comprenant un élément mobile présentant une ouverture dans laquelle la sangle (7, 25) est engagée, l'élément mobile étant maintenu dans une première position dite de fonctionnement normal par la sangle (7, 25), celle-ci étant soumise à une tension de fonctionnement normal, l'élément mobile basculant dans une position dite de fonctionnement anormal, lorsque la sangle (7, 25) présente une tension inférieure à un seuil prédéterminé correspondant à un fonctionnement anormal de la porte. 2. Porte rapide selon la revendication 1 , caractérisée en ce que l'élément mobile du détecteur de tension (6) est sollicité vers Ia deuxième position dite de fonctionnement anormal par un ressort de rappel. 3. Porte rapide selon la revendication 1 ou la revendication 2, caractérisée en ce que le déplacement de l'élément mobile de sa position de fonctionnement normal à sa position de fonctionnement anormal déclenche des moyens d'alerte. 4. Porte rapide selon l'une des revendications 1 à 3, caractérisée en ce que le détecteur de tension (6) comprend un cylindre (8) mobile en rotation autour de son axe, dans lequel est ménagée une fente passant par son axe et dans laquelle est engagée la sangle (7, 25). 5. Porte selon la revendication 4, caractérisée en ce que le cylindre mobile (8) est supporté par deux flasques (10). 6. Porte rapide selon Ia revendication 4, caractérisée en ce que le cylindre est muni d'un téton (14) traversant une rainure (13) en arc de cercle ménagée dans l'un des flasques (10), ce téton (14) venant en contact d'un doigt (16) connecté à des moyens d'alerte, lorsque le cylindre (8) est dans la position de fonctionnement anormal. 7. Porte rapide selon la revendication 5 ou la revendication 6, caractérisée en ce que le détecteur de tension (6) présente au moins un galet cylindrique (19) permettant le guidage de la sangle (7, 25) vers le cylindre mobile (8). 8. Porte rapide selon l'une des revendications 1 à 7, caractérisée en ce que la porte est une porte à repliement, la sangle (7) servant de moyens de traction de l'écran (21 ). 9. Porte rapide selon l'une des revendications 1 à 7, caractérisée en ce que la porte est une porte à enroulement, la sangle (25) servant de sangle témoin de la bonne tension de l'écran (21 ). 10. Porte rapide selon la revendication 9, caractérisée en ce que la sangle (25) est fixée au bord inférieur de l'écran par des moyens de liaison susceptibles de se rompre sous une charge prédéterminée. 11. Porte rapide selon la revendication 10, caractérisée en ce que les moyens de liaisons sont constitués de deux éléments de matériau auto-agrippant de type boucles et crochets placés respectivement à l'extrémité de la bande (25) et sur l'écran (21 ). 12. Porte rapide selon la revendication 10, caractérisée en ce que les moyens de liaisons sont constitués de deux éléments magnétiques de polarité différente placés respectivement à l'extrémité de la bande (25) et sur l'écran (21 ). 13. Porte rapide selon la revendication 10, caractérisée en ce que les moyens de liaisons sont constitués par un zone ruptible sous une charge prédéterminée ménagée dans la bande (25). 1. fast door, closing a bay formed in a partition comprising, a flexible screen (21), the screen lifting means comprising, inter alia, a shaft (2) winding fixed at a lintel of the door, and a strap (7, 25) whose one end is fixed on the winding shaft (2) and whose other end is fixed on the lower edge (8) of the screen, characterized in that that the strap (7, 25) travels through a voltage detector (6) comprising a movable element having an opening in which the strap (7, 25) is engaged, the movable element being held in a first position called normal operation by the strap (7, 25), the latter being subjected to a normal operating voltage, the mobile element tilting in a so-called abnormal operating position, when the strap (7, 25) has a voltage lower than a predetermined threshold corresponding to an abnormal operation of the po rte. 2. rapid door according to claim 1, characterized in that the movable member of the voltage detector (6) is biased towards the second position said abnormal operation by a return spring. 3. rapid door according to claim 1 or claim 2, characterized in that the displacement of the movable member from its normal operating position to its abnormal operating position triggers alert means. 4. rapid door according to one of claims 1 to 3, characterized in that the voltage detector (6) comprises a cylinder (8) rotatable about its axis, wherein is formed a slot passing through its axis and in which the strap (7, 25) is engaged. 5. Door according to claim 4, characterized in that the movable cylinder (8) is supported by two flanges (10). 6. rapid door according to claim 4, characterized in that the cylinder is provided with a stud (14) passing through a groove (13) in an arc formed in one of the flanges (10), this stud (14) coming in contact of a finger (16) connected to warning means, when the cylinder (8) is in the abnormal operating position. 7. A rapid door according to claim 5 or claim 6, characterized in that the tension detector (6) has at least one cylindrical roller (19) for guiding the strap (7, 25) towards the moving cylinder (8). ). 8. rapid door according to one of claims 1 to 7, characterized in that the door is a folding door, the strap (7) serving as a pulling means of the screen (21). 9. rapid door according to one of claims 1 to 7, characterized in that the door is a roll-up door, the strap (25) serving as a strap to the good tension of the screen (21). 10. A rapid door according to claim 9, characterized in that the strap (25) is attached to the lower edge of the screen by connecting means capable of breaking under a predetermined load. 11. A rapid door according to claim 10, characterized in that the connecting means consist of two hook-and-loop hook-and-loop material elements placed respectively at the end of the strip (25) and on the screen ( 21). 12. Rapid door according to claim 10, characterized in that the connecting means consist of two magnetic elements of different polarity placed respectively at the end of the strip (25) and on the screen (21). 13. A rapid door according to claim 10, characterized in that the connecting means are constituted by a ruptible area under a predetermined load formed in the strip (25).
EP05756720A 2004-06-22 2005-06-22 Fast door with secure operation Withdrawn EP1766178A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0406781A FR2871839B1 (en) 2004-06-22 2004-06-22 SECURE DOOR WITH SECURE OPERATION
PCT/IB2005/001761 WO2006000882A1 (en) 2004-06-22 2005-06-22 Fast door with secure operation

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EP1766178A1 true EP1766178A1 (en) 2007-03-28

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FR2871839B1 (en) 2006-09-15
US7849906B2 (en) 2010-12-14
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FR2871839A1 (en) 2005-12-23
US20080060772A1 (en) 2008-03-13

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