EP1680571A1 - Double screen rapid door - Google Patents

Double screen rapid door

Info

Publication number
EP1680571A1
EP1680571A1 EP04791549A EP04791549A EP1680571A1 EP 1680571 A1 EP1680571 A1 EP 1680571A1 EP 04791549 A EP04791549 A EP 04791549A EP 04791549 A EP04791549 A EP 04791549A EP 1680571 A1 EP1680571 A1 EP 1680571A1
Authority
EP
European Patent Office
Prior art keywords
door according
curtain
bars
screen
stiffening
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.)
Granted
Application number
EP04791549A
Other languages
German (de)
French (fr)
Other versions
EP1680571B1 (en
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 EP1680571A1 publication Critical patent/EP1680571A1/en
Application granted granted Critical
Publication of EP1680571B1 publication Critical patent/EP1680571B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0692—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising flexible sheets as closing screen
    • 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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0615—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the closing elements
    • E06B9/063—Bars or rods perpendicular to the closing direction
    • 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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/13—Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
    • 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
    • E06B9/58—Guiding 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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E06B2009/1505—Slat details
    • E06B2009/1527—Transparent slats or transparent sections in slats
    • 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/2423—Combinations of at least two screens
    • E06B2009/2447—Parallel screens
    • E06B2009/2458—Parallel screens moving simultaneously
    • 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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0646—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position
    • E06B9/0669—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position stored in a zig-zag arrangement

Definitions

  • the present invention relates to a door with vertical opening having a flexible curtain capable of occupying a closed position or an opening position by folding up to a desired height having a curtain comprising two flexible screens defining an air mattress making thermal or sound insulation.
  • These doors thanks to the additional thermal and sound insulation they provide compared to single screen doors, are particularly suitable for closing building bays giving onto the outside, in particular to delimit an area subject to wind, bad weather and large temperature differences.
  • These doors can also be used to delimit two zones, one of which has a high noise level.
  • the structure of these doors can consist of horizontal bars held together by cables or by straps. Horizontal strips of flexible fabric, generally PVC, are attached to these bars to form on each side thereof two screens which delimit an air mattress.
  • the invention aims to provide a double screen door delimiting an air mattress, while being simple to implement, while having a great seal.
  • this door comprises two lateral uprights, a transverse box connecting the upper ends of the two uprights and a movable curtain between a closed position in which it closes the opening formed by the uprights and the box and a position of opening in which it is folded under the box.
  • the door comprises a curtain made up of two parallel screens delimiting an air mattress, suspended at the level of the upper zone of the uprights, the curtain comprising: - at least one lifting strap connecting the lower part of the curtain to a shaft mounted at the level of the box, - and at least one transverse stiffening means attached to each of the screens, the lateral edges of each screen coming into contact with the uprights to form a sealed surface surface contact.
  • the basic idea underlying the invention consists, in a double screen curtain, of placing stiffening bars in sleeves formed in each screen so that the inner face of each of the two outer faces of the double screen is flat and is always stretched in the closed position so that, coming against a slide formed in the vertical uprights, a surface contact is formed which provides total sealing of the air mattress formed between the two screens.
  • the curtain moreover, can be entirely factory made then simply mounted on the final site.
  • the sleeves of each of the screens are opposite two by two.
  • at least one pair of two stiffening bars, engaged in two sleeves facing each other has at least a spacer connecting said bars.
  • the spacer has an opening for the passage of the lifting strap.
  • at least two pairs of braced stiffening bars alternate with at least one pair of unbraced stiffening bars, so that, in the raised position of the curtain, alternating folding folds are formed symmetrically with respect to the plane door opening.
  • the lower part of the curtain formed by the junction fold of the two screens, receives a flexible element constituted by a flexible sheath containing a flexible material.
  • the flexible element is constituted by a flexible bar comprising a foam-sheathed spring.
  • the ends of each stiffening bar are provided with guide elements relative to each of the uprights.
  • the stiffening bars have a flexibility allowing to absorb an abnormal shock to go out, to disengage or to disapply from the slides without undergoing permanent deformation so that the curtain is not damaged during a collision for example with a vehicle.
  • the flexible bar retained in the junction fold of the two screens, the lower pair of braced bars and the pair of consecutive non-braced bars are at distances such that, in the raised position of the curtain, the flexible bar protrudes from the folds formed by each screen folded so that in the event of a collision with the curtain, contact is made with the flexible bar rather than with a stiffening bar.
  • each screen is made up of a multilayer complex.
  • each screen has, at the same height, at least one transverse panel made of transparent material.
  • each screen is provided with at least one shape memory bender which can form a fold towards the outside of the curtain in the folded position thereof.
  • the curtain according to one possibility, it is formed in a single element of flexible material and then is folded back on itself to form two screens.
  • each screen comprises at least two panels of transverse flexible material connected by a sheath.
  • the ends of each stiffening bar of a pair of non-braced bars are provided with a guide tip having a flat part oriented in the plane of the screen in which the bar is located.
  • a spacer connects the ends of a pair of bars and supports a roller capable of engaging between two slides formed in each of the vertical uprights.
  • provision may be made for filling nozzles to be engaged at the end of each of the bars to avoid the formation of folds.
  • a cable is engaged in at least one sleeve, the ends of which are guided relative to the vertical uprights.
  • FIG 2 is a section of the curtain constituting the door;
  • Figure 3 and 4 is a sectional view of the door at an amount thereof.
  • the door comprises two lateral uprights 2 connected at their upper ends by a box 3. Box 3 can also be called crosspiece.
  • Box 3 can also be called crosspiece.
  • the door comprises a flexible curtain 10 which can be folded up in the upper part of the door, that is to say under the box 3, to allow the passage of people or of vehicles through it.
  • the curtain 10 consists of two parallel screens 1 1 a, 1 1 b. These two screens 1 1 a, 1 1 b define an air mattress which gives the door great sound and thermal insulation.
  • each screen 1 1 1 a, 1 1 b consists of panels 12 of flexible material; it can be transparent or opaque PVC. As can be seen in FIG. 2 between two consecutive panels 12, two superimposed strips 13 are welded to each of the panels 12 and thus form a sheath 15.
  • each of the screens 1 1 a, 1 1 b has four equidistant sleeves; the number of sleeves 15 depends of course on the height of the door.
  • a stiffening bar 16 is engaged inside each sleeve 15. This stiffening bar 16 is made of flexible material which can be a pultruded composite.
  • each screen 1 1 The sleeves 15 of each screen 1 1 are arranged such that the stiffening bars 16 are two by two placed at the same height to form a pair of stiffening bars. It should also be noted that certain stiffening bars 16 of the same pair are connected by two spacers 18. The assembly formed by these two braced bars 16 thus has a high inertia module. The pairs of braced and non-braced bars 16 are alternated. The raising of the curtain is controlled by two lifting straps 20. One end of each strap is connected to a shaft 19 fixed in the box 3 of the door and the other end of which is connected to the pair of the lowest braced stiffening bars.
  • the spacers 18 connecting the stiffening bars located above the lowest braced pair are provided with an opening 21 allowing the passage of a lifting strap 20.
  • the curtain 10 is provided at the junction fold of the two screens 1 1 a, 1 1 b with a flexible bar 22 which may consist of a spring sheathed in absorbent foam.
  • Figures 3 and 4 illustrate the manner in which the guidance of the end of the stiffening bars can be done according to an embodiment of the invention relative to the side uprights 2.
  • the uprights 2 themselves have two parallel slides 24 and 25. Referring first to Figure 3, we see that the guide tips 28 are fitted into each of the bars 16 of stiffening.
  • end pieces 28 have a cylindrical part 29 whose diameter corresponds to the internal diameter of the stiffening bars, which allows the engagement of the end pieces in the stiffening bars.
  • the cylindrical part of the endpiece is extended by a frustoconical part 30 which itself is extended into a flat part 31.
  • the end pieces 28 are engaged in the stiffening bars with an orientation such that the flat part 31 is in the plane of each screen.
  • Figure 4 shows in section the guide of a pair of stiffening bars connected by spacers. At the end of the two stiffening bars, a spacer 33 secures the latter.
  • the strip 13 constituting the inner wall of the sleeve 15 has a cutout allowing the spacer 33 to assume the junction with the stiffening bars 16.
  • the spacer 33 supports a roller 32 whose diameter is slightly less than the distance separating the slides 24 and 25.
  • filling tips 34 are engaged in the ends of the stiffening bars 16 which prevent the formation of folds at the end of the bars 16.
  • the door behaves as follows: When the curtain 10 is in the closed position, the interior faces of each screen 1 1 a 1 1 b are applied against the rails of the uprights as can be seen in Figure 3 or in Figure 4 thanks in particular to the guide elements , namely end piece 28 and roller 32.
  • each screen could be formed by an overlapping area of the panels and by two parallel weld lines or by a strip welded directly to the outer face of a panel. It is also possible to make the curtain in a single element of flexible material and then fold it to form two screens. It is conceivable to implement the invention in an embodiment in which the ends of the stiffening bars are directly applied against the uprights or against flexible or rigid slides arranged in the latter.

Abstract

The inventive door comprises two lateral posts (2), a transversal caisson (3) connecting the top ends of the posts and a curtain (10) movable between the closing position thereof, wherein said curtain closes a void formed by posts (2) and caisson (3) and the opening position wherein said curtain is folded up under the caisson (3). According to the invention, said the curtain (10) consisting of two parallel screens (11a, 11b) defining the boundaries of an air cushion and suspended to the top area of the posts. Said curtain (10) comprises at least one lifting strap (20) connecting the lower part of the curtain (10) to a shaft (21) mounted on the caisson (3) and at least one transversal stiffening means built up on each screen (11a, 11b), the lateral edges of each screen (11a, 11b) are applied to the posts in such a way that a lateral surface tight contact is formed.

Description

PORTE RAPIDE A DOUBLE ECRAN La présente invention concerne une porte à ouverture verticale ayant un rideau souple pouvant occuper une position de fermeture ou une position d'ouverture par repliement à une hauteur souhaitée ayant un rideau comprenant deux écrans souples délimitant un matelas d'air réalisant une isolation thermique ou phonique . Ces portes, grâce au surcroît d'isolation thermique et phonique qu'elles procurent par rapport au portes à simple écran, sont particulièrement adaptées à la fermeture de baies de bâtiments donnant sur l'extérieur, notamment pour délimiter une zone soumise au vent, aux intempéries et à de grandes différences de température. Ces portes peuvent également être mises en œuvre pour délimiter deux zones dont l'une présente un niveau sonore élevé. La structure de ces portes peut être constituée de barres horizontales maintenues entre elles par des câbles ou par des sangles. Des bandes horizontales de tissu souple, généralement de PVC, sont rapportées sur ces barres pour former de chaque côté de celles-ci deux écrans qui délimitent un matelas d'air. La fixation des bandes se fait de manière habituelle, par boulonnage, sur chaque coté de la structure ainsi définie. Le montage de ces portes s'avère donc assez fastidieux. Il exige un personnel très qualifié et demande beaucoup de temps. De plus, ce type de porte présente un inconvénient sérieux dans la mesure où l'étanchéité entre les écrans et les montants verticaux de la porte s'avère très imparfaite. En effet, on constate que les bandes de tissu ont tendance à former un pli et à bâiller. En d'autres termes, comme la distance entre les barres horizontales est fixée par des câbles ou par des courroies, les bandes de tissu, notamment en fonction des conditions de température, peuvent se détendre et former un bâillement, et alors ne plaquent pas contre le montant de la porte. Ce bâillement est évidemment désastreux pour la bonne isolation que la porte est censée créer. Il existe également des portes à deux écrans parallèles dans lesquelles les barres horizontales comprennent des rainures de section trapézoïdale ou en goutte d'eau dans lesquelles sont engagés les bords horizontaux des bandes de tissu. Les portes de ce type présentent également des inconvénients puisqu'il existe une discontinuité de l'écran au niveau de l'extrémité des barres horizontales. En effet, au niveau de ces zones le placage contre les montants est inexistant. Par ailleurs, l'introduction des bandes de tissu dans les rainures en forme de goutte d'eau peut être assez difficile, surtout dans le cas de porte de grande largeur. On connaît également par le document FR-A-2 769 944 une porte dans laquelle les moyens en traction de l'écran sont isolés de l'extérieur. Si ce document prévoit une étanchéité desmoyens de traction, il est en revanche totalement silencieux sur la gestion de l'étanchéité latérale entre un écran et les montants d'une porte. L'invention a pour but de proposer une porte à double écran délimitant un matelas d'air, tout en étant d'une mise en œuvre simple, tout en présentant une grande étanchéité. De manière connue en soi, cette porte comprend deux montants latéraux, un caisson transversal reliant les extrémités supérieures des deux montants et un rideau mobile entre une position de fermeture dans laquelle il obture la baie formée par les montants et le caisson et une position d'ouverture dans laquelle il est replié sous le caisson. Selon l'invention, la porte comprend un rideau constitué de deux écrans parallèles délimitant un matelas d'air, suspendus au niveau de la zone supérieure des montants, le rideau comprenant : - au moins une sangle de relèvement reliant la partie inférieure du rideau à un arbre monté au niveau du caisson, - et au moins un moyen de raidissement transversal rapporté sur chacun des écrans, les bords latéraux de chaque écran venant en applique contre les montants pour former un contact latéral surfacique étanche. L'idée fondamentale à la base de l'invention consiste, dans un rideau à double écran, à placer des barres de raidissement dans des fourreaux ménagés dans chaque écran de façon à ce que la face intérieure de chacune des deux faces extérieures du double écran soit plane et soit toujours tendue en position de fermeture pour que, en venant contre une glissière ménagée dans les montants verticaux, il se forme un contact surfacique qui offre une totale étanchéité du matelas d'air formé entre les deux écrans. Le rideau, en outre, peut être entièrement fabriqué en usine puis simplement monté sur le site final. De façon avantageuse, les fourreaux de chacun des écrans sont en regard deux à deux. Pour augmenter le module d'inertie de rideau et donc améliorer sa tenue notamment lorsque la porte est soumise au vent, au moins une paire de deux barres de raidissement, engagées dans deux fourreaux en regard l'un de l'autre, présente au moins une entretoise reliant lesdites barres. Avantageusement, l'entretoise présente une ouverture pour le passage de la sangle de relèvement. Selon une possibilité avantageuse, au moins deux paires de barres de raidissement entretoisées alternent avec au moins une paire de barres de raidissement non entretoisées, de telle sorte que, en position relevée du rideau, des plis de repliement alternés se forment symétriquement par rapport au plan d'ouverture de la porte. Pour l'étanchéité de la porte au niveau de son bord inférieur, la partie inférieure du rideau, formée par le pli de jonction des deux écrans, reçoit un élément souple constitué par une gaine souple contenant un matériau souple. Selon une possibilité, l'élément souple est constitué par une barre souple comprenant un ressort gainé de mousse. Selon une forme de réalisation, les extrémités de chaque barre de raidissement sont munies d'éléments de guidage par rapport à chacun des montants. De préférence, les barres de raidissement présentent une souplesse permettant d'absorber un choc anormal de sortir, de se désengager ou de se désappliquer des glissières sans subir de déformation permanente pour que le rideau ne soit pas endommagé lors d'une collision par exemple avec un véhicule. Avantageusement, la barre souple retenue dans le pli de jonction des deux écrans, la paire inférieure de barres entretoisées et la paire de barres non entretoisées consécutives sont à des distances telles que, en position relevée du rideau, la barre souple dépasse des plis formés par chaque écran replié de façon à ce que en cas de collision avec le rideau, le contact se fasse avec la barre souple plutôt qu'avec une barre de raidissement. Selon une possibilité, chaque écran est constitué d'un complexe multicouche. Dans une forme de réalisation avantageuse, chaque écran présente, à même hauteur, au moins un panneau transversal en matériau transparent. Selon une alternative, entre deux paires de barres entretroisées, chaque écran est muni d'au moins un plieur à mémoire de forme pouvant former un pli vers l'extérieur du rideau en position repliée de celui-ci. En ce qui concerne le rideau, selon une possibilité, il est formé dans un unique élément de matériau souple puis est replié sur lui-même pour former deux écrans. Selon une autre possibilité, chaque écran comprend au moins deux panneaux de matériau souple transversaux reliés par un fourreau. Avantageusement, les extrémités de chaque barre de raidissement d'une paire de barres non entretoisées sont munies d'un embout de guidage présentant une partie plane orientée dans le plan de l'écran dans lequel se trouve la barre. Selon une possibilité, une entretoise relie les extrémités d'une paire de barres et supporte un galet pouvant s'engager entre deux glissières formées dans chacun des montants verticaux. De plus, on peut prévoir que des embouts de remplissage sont engagés à l'extrémité de chacune des barres pour éviter la formation de plis. Selon une possibilité de réalisation des moyens de raidissement des écrans souples, un câble est engagé dans au moins un fourreau dont les extrémités sont guidées par rapport aux montants verticaux. Pour sa bonne compréhension l'invention est décrite en référence au dessin ci annexé représentant à titre d'exemple non limitatif une forme de réalisation d'une porte selon celle-ci. Figure 1 représente en perspective une porte à double écran selon l'invention. Figure 2 est une section du rideau constituant la porte ; Figure 3 et 4 est une vue en coupe de la porte au niveau d'un montant de celle-ci. En se référant au dessin, on peut voir que la porte comprend deux montants 2 latéraux reliés à leurs extrémités supérieures par un caisson 3. Le caisson 3 peut également être appelé traverse. Pour fermer la baie délimitée par les montants et le caisson, la porte comprend un rideau 10 souple qui peut se replier dans la partie supérieure de la porte, c'est-à-dire sous le caisson 3, pour permettre le passage de personnes ou de véhicules à travers celle-ci. Comme cela apparaît à la figure 1 , le rideau 10 est constitué de deux écrans parallèles 1 1 a, 1 1 b. Ces deux écrans 1 1 a,1 1 b délimitent un matelas d'air qui confère à la porte une grande isolation phonique et thermique. Dans l'exemple représenté sur le dessin, chaque écran 1 1 a, 1 1 b est constitué de panneaux 12 de matière souple ; il peut s'agir de PVC transparent ou opaque. Comme on peut le voir sur la figure 2 entre deux panneaux 12 consécutifs, deux bandes 13 superposées sont soudées sur chacun des panneaux 12 et forment ainsi un fourreau 15 . Dans l'exemple représenté chacun des écrans 1 1 a, 1 1 b présente quatre fourreaux 15 équidistants ; le nombre de fourreaux 15 dépend bien entendu de la hauteur de la porte. A l'intérieur de chaque fourreau 15, une barre de raidissement 16 est engagée. Cette barre de raidissement 16 est réalisé en matériau flexible pouvant être un composite pultrudé. Les fourreaux 15 de chaque écran 1 1 sont disposés de manière telle que les barres de raidissement 16 sont deux à deux placées à la même hauteur pour former une paire de barres de raidissement. On note, par ailleurs, que certaines barres 16 de raidissement d'une même paire sont reliées par deux entretoises 18. L'ensemble formé par ces deux barres 16 entretoisées présente ainsi un module d'inertie élevée. Les paires de barres 16 entretoisées et non entretoisées sont alternées. Le relèvement du rideau est commandé par deux sangles 20 de relèvement. L'une des extrémités de chaque sangle est reliée à un arbre 19 fixé dans le caisson 3 de la porte et dont l'autre extrémité est reliée à la paire de barre de raidissement entretoisée la plus basse. Il est précisé que les entretoises 18 reliant les barres de raidissement situées au dessus de la paire entretoisée la plus basse sont pourvues d'une ouverture 21 permettant le passage d'une sangle 20 de relèvement. Par ailleurs, le rideau 10 est muni au niveau du pli de jonction des deux écrans 1 1 a, 1 1 b d'une barre souple 22 qui peut être constituée d'un ressort gainé de mousse absorbante. Les figures 3 et 4 illustrent la manière avec laquelle le guidage de l'extrémité des barres de raidissement se peut se faire selon une forme de réalisation de l'invention par rapport aux montants 2 latéraux. Tout d'abord, on remarque que les montants 2 eux-mêmes présentent deux glissières parallèles 24 et 25. En se référant tout d'abord à la figure 3, on constate que des embouts de guidage 28 sont emmanchés dans chacune des barres 16 de raidissement. Ces embouts 28 présentent une partie cylindrique 29 dont le diamètre correspond au diamètre intérieur des barres de raidissement, ce qui permet l'engagement des embouts dans les barres de raidissement. La partie cylindrique de l'embout se prolonge par une partie tronconique 30 qui elle-même se prolonge en une partie plane 31 . Les embouts 28 sont engagés dans les barres de raidissement avec une orientation telle que la partie plane 31 se trouve dans le plan de chaque écran. Ainsi le contact entre chaque barre de raidissement vient en appui contre la face extérieure des glissières 24, 25 par l'intermédiaire des embouts qui assurent un contact surfacique contre ces dernières. La figure 4 représente en coupe le guide d'une paire de barres de raidissement reliées par des entretoises. Au niveau de l'extrémité des deux barres de raidissement, une entretoise 33 solidarise ces dernières. On remarque que la bande 13 constituant la paroi intérieure du fourreau 15 présente une découpe permettant à l'entretoise 33 d'assumer la jonction avec les barres de raidissement 16. Comme on peut le voir, l'entretoise 33 supporte un galet 32 dont le diamètre est légèrement inférieur à la distance séparant les glissières 24 et 25. On note de plus que des embouts de remplissage 34 sont engagés dans les extrémités des barres 16 de raidissement qui évitent la formation de plis au niveau de l'extrémité de barres 16. En fonctionnement, la porte se comporte de la manière suivante : Lorsque le rideau 10 est en position de fermeture, les faces intérieures de chaque écran 1 1 a 1 1 b sont en applique contre les glissières des montants comme on peut le voir sur la figure 3 ou sur la figure 4 grâce notamment aux éléments de guidage, à savoir embout 28 et galet 32. Ceci est rendu possible par le fait que les barres 16 de raidissement sont contenues dans chaque écran 1 1 a, 1 1 b. Ce contact plan et continu des bords latéraux de chaque écran contre les montants confère à la porte une remarquable étanchéité tout en bénéficiant d'un rideau qui présente une bonne résistance aux intempéries et, surtout au vent, grâce aux nombreuses barres 16 de raidissement. En ce qui concerne l'étanchéité du bord inférieur de la porte, celle-ci est obtenue par la barre 22 souple qui vient former un contact surfacique avec le sol. Lorsque le rideau 10 est en position relevée grâce à l'action des sangles 20 qui s'enroulent autour de l'arbre 21 , des plis se forment symétriquement de chaque coté du plan d'ouverture de la porte. Il est à noter que ces plis se forment systématiquement dans chaque écran 1 1 a, 1 1 b grâce au poids des barres de raidissement non entretoisées situées elles-mêmes dans chaque écran 1 1 a, 1 1 b. Ainsi, même dans le cas d'une porte exposée à un vent violent, le risque de formation d'un pli entre les deux écrans 1 1 a, 1 1 b est pratiquement éliminé. L'invention fournit ainsi une porte ayant les nombreux avantages indiqués. Cette porte présente notamment une excellente étanchéité latérale. En outre, grâce à ses écrans qui peuvent être assemblés en usine, la mise en place sur site d'une porte selon l'invention est considérablement plus simple que la mise en place de portes telles qu'elles sont connues dans l'état de la technique qui requiert un assemblage sur site des écrans. Bien entendu l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais elle en embrasse au contraire toutes les formes de réalisation. Ainsi les fourreaux de chaque écran pourraient être formés par une zone de chevauchement des panneaux et par deux lignes de soudure parallèles ou par une bande soudée directement sur la face extérieure d'un panneau. Il est également possible de réaliser le rideau dans un unique élément de matériau souple puis de plier ce dernier pour former deux écrans. On peut envisager de mettre en œuvre l'invention dans une forme de réalisation dans laquelle les extrémités des barres de raidissement sont directement en applique contre les montants ou contre des glissières souples ou rigides ménagées dans ces derniers. The present invention relates to a door with vertical opening having a flexible curtain capable of occupying a closed position or an opening position by folding up to a desired height having a curtain comprising two flexible screens defining an air mattress making thermal or sound insulation. These doors, thanks to the additional thermal and sound insulation they provide compared to single screen doors, are particularly suitable for closing building bays giving onto the outside, in particular to delimit an area subject to wind, bad weather and large temperature differences. These doors can also be used to delimit two zones, one of which has a high noise level. The structure of these doors can consist of horizontal bars held together by cables or by straps. Horizontal strips of flexible fabric, generally PVC, are attached to these bars to form on each side thereof two screens which delimit an air mattress. The strips are fixed in the usual way, by bolting, on each side of the structure thus defined. The assembly of these doors is therefore quite tedious. It requires highly qualified staff and is time consuming. In addition, this type of door has a serious drawback in that the tightness between the screens and the vertical uprights of the door turns out to be very imperfect. Indeed, we see that the strips of fabric tend to form a fold and yawn. In other words, since the distance between the horizontal bars is fixed by cables or by belts, the strips of fabric, in particular depending on the temperature conditions, can relax and form a yawn, and therefore do not press against the amount of the door. This yawn is obviously disastrous for the good insulation that the door is supposed to create. There are also doors with two parallel screens in which the horizontal bars include grooves of trapezoidal or teardrop section in which the horizontal edges of the strips of fabric are engaged. Doors of this type also have drawbacks since there is a discontinuity of the screen at the end of the horizontal bars. Indeed, in these areas the plating against the uprights is nonexistent. Furthermore, the introduction of the strips of fabric into the teardrop-shaped grooves can be quite difficult, especially in the case of very wide doors. Document FR-A-2 769 944 also discloses a door in which the means for pulling the screen are isolated from the outside. If this document provides a watertightness of the traction means, it is however completely silent on the management of the lateral tightness between a screen and the jambs of a door. The invention aims to provide a double screen door delimiting an air mattress, while being simple to implement, while having a great seal. In a manner known per se, this door comprises two lateral uprights, a transverse box connecting the upper ends of the two uprights and a movable curtain between a closed position in which it closes the opening formed by the uprights and the box and a position of opening in which it is folded under the box. According to the invention, the door comprises a curtain made up of two parallel screens delimiting an air mattress, suspended at the level of the upper zone of the uprights, the curtain comprising: - at least one lifting strap connecting the lower part of the curtain to a shaft mounted at the level of the box, - and at least one transverse stiffening means attached to each of the screens, the lateral edges of each screen coming into contact with the uprights to form a sealed surface surface contact. The basic idea underlying the invention consists, in a double screen curtain, of placing stiffening bars in sleeves formed in each screen so that the inner face of each of the two outer faces of the double screen is flat and is always stretched in the closed position so that, coming against a slide formed in the vertical uprights, a surface contact is formed which provides total sealing of the air mattress formed between the two screens. The curtain, moreover, can be entirely factory made then simply mounted on the final site. Advantageously, the sleeves of each of the screens are opposite two by two. To increase the curtain inertia module and therefore improve its resistance, especially when the door is exposed to the wind, at least one pair of two stiffening bars, engaged in two sleeves facing each other, has at least a spacer connecting said bars. Advantageously, the spacer has an opening for the passage of the lifting strap. According to an advantageous possibility, at least two pairs of braced stiffening bars alternate with at least one pair of unbraced stiffening bars, so that, in the raised position of the curtain, alternating folding folds are formed symmetrically with respect to the plane door opening. For sealing the door at its lower edge, the lower part of the curtain, formed by the junction fold of the two screens, receives a flexible element constituted by a flexible sheath containing a flexible material. According to one possibility, the flexible element is constituted by a flexible bar comprising a foam-sheathed spring. According to one embodiment, the ends of each stiffening bar are provided with guide elements relative to each of the uprights. Preferably, the stiffening bars have a flexibility allowing to absorb an abnormal shock to go out, to disengage or to disapply from the slides without undergoing permanent deformation so that the curtain is not damaged during a collision for example with a vehicle. Advantageously, the flexible bar retained in the junction fold of the two screens, the lower pair of braced bars and the pair of consecutive non-braced bars are at distances such that, in the raised position of the curtain, the flexible bar protrudes from the folds formed by each screen folded so that in the event of a collision with the curtain, contact is made with the flexible bar rather than with a stiffening bar. According to one possibility, each screen is made up of a multilayer complex. In an advantageous embodiment, each screen has, at the same height, at least one transverse panel made of transparent material. According to an alternative, between two pairs of cross bars, each screen is provided with at least one shape memory bender which can form a fold towards the outside of the curtain in the folded position thereof. Regarding the curtain, according to one possibility, it is formed in a single element of flexible material and then is folded back on itself to form two screens. According to another possibility, each screen comprises at least two panels of transverse flexible material connected by a sheath. Advantageously, the ends of each stiffening bar of a pair of non-braced bars are provided with a guide tip having a flat part oriented in the plane of the screen in which the bar is located. According to one possibility, a spacer connects the ends of a pair of bars and supports a roller capable of engaging between two slides formed in each of the vertical uprights. In addition, provision may be made for filling nozzles to be engaged at the end of each of the bars to avoid the formation of folds. According to a possible embodiment of the stiffening means of the flexible screens, a cable is engaged in at least one sleeve, the ends of which are guided relative to the vertical uprights. For a good understanding of the invention is described with reference to the attached drawing showing by way of nonlimiting example an embodiment of a door according to it. Figure 1 shows in perspective a double screen door according to the invention. Figure 2 is a section of the curtain constituting the door; Figure 3 and 4 is a sectional view of the door at an amount thereof. Referring to the drawing, it can be seen that the door comprises two lateral uprights 2 connected at their upper ends by a box 3. Box 3 can also be called crosspiece. To close the opening delimited by the uprights and the box, the door comprises a flexible curtain 10 which can be folded up in the upper part of the door, that is to say under the box 3, to allow the passage of people or of vehicles through it. As shown in Figure 1, the curtain 10 consists of two parallel screens 1 1 a, 1 1 b. These two screens 1 1 a, 1 1 b define an air mattress which gives the door great sound and thermal insulation. In the example shown in the drawing, each screen 1 1 a, 1 1 b consists of panels 12 of flexible material; it can be transparent or opaque PVC. As can be seen in FIG. 2 between two consecutive panels 12, two superimposed strips 13 are welded to each of the panels 12 and thus form a sheath 15. In the example shown, each of the screens 1 1 a, 1 1 b has four equidistant sleeves; the number of sleeves 15 depends of course on the height of the door. Inside each sleeve 15, a stiffening bar 16 is engaged. This stiffening bar 16 is made of flexible material which can be a pultruded composite. The sleeves 15 of each screen 1 1 are arranged such that the stiffening bars 16 are two by two placed at the same height to form a pair of stiffening bars. It should also be noted that certain stiffening bars 16 of the same pair are connected by two spacers 18. The assembly formed by these two braced bars 16 thus has a high inertia module. The pairs of braced and non-braced bars 16 are alternated. The raising of the curtain is controlled by two lifting straps 20. One end of each strap is connected to a shaft 19 fixed in the box 3 of the door and the other end of which is connected to the pair of the lowest braced stiffening bars. It is specified that the spacers 18 connecting the stiffening bars located above the lowest braced pair are provided with an opening 21 allowing the passage of a lifting strap 20. Furthermore, the curtain 10 is provided at the junction fold of the two screens 1 1 a, 1 1 b with a flexible bar 22 which may consist of a spring sheathed in absorbent foam. Figures 3 and 4 illustrate the manner in which the guidance of the end of the stiffening bars can be done according to an embodiment of the invention relative to the side uprights 2. First, we note that the uprights 2 themselves have two parallel slides 24 and 25. Referring first to Figure 3, we see that the guide tips 28 are fitted into each of the bars 16 of stiffening. These end pieces 28 have a cylindrical part 29 whose diameter corresponds to the internal diameter of the stiffening bars, which allows the engagement of the end pieces in the stiffening bars. The cylindrical part of the endpiece is extended by a frustoconical part 30 which itself is extended into a flat part 31. The end pieces 28 are engaged in the stiffening bars with an orientation such that the flat part 31 is in the plane of each screen. Thus the contact between each stiffening bar bears against the outer face of the slides 24, 25 by means of the end pieces which provide surface contact against the latter. Figure 4 shows in section the guide of a pair of stiffening bars connected by spacers. At the end of the two stiffening bars, a spacer 33 secures the latter. Note that the strip 13 constituting the inner wall of the sleeve 15 has a cutout allowing the spacer 33 to assume the junction with the stiffening bars 16. As can be seen, the spacer 33 supports a roller 32 whose diameter is slightly less than the distance separating the slides 24 and 25. It is further noted that filling tips 34 are engaged in the ends of the stiffening bars 16 which prevent the formation of folds at the end of the bars 16. In operation, the door behaves as follows: When the curtain 10 is in the closed position, the interior faces of each screen 1 1 a 1 1 b are applied against the rails of the uprights as can be seen in Figure 3 or in Figure 4 thanks in particular to the guide elements , namely end piece 28 and roller 32. This is made possible by the fact that the stiffening bars 16 are contained in each screen 1 1 a, 1 1 b. This flat and continuous contact of the lateral edges of each screen against the uprights gives the door a remarkable seal while benefiting from a curtain which has good resistance to bad weather and, especially to the wind, thanks to the numerous stiffening bars 16. As regards the sealing of the lower edge of the door, this is obtained by the flexible bar 22 which forms a surface contact with the ground. When the curtain 10 is in the raised position thanks to the action of the straps 20 which are wound around the shaft 21, folds are formed symmetrically on each side of the door opening plane. It should be noted that these folds are systematically formed in each screen 1 1 a, 1 1 b thanks to the weight of the non-braced stiffening bars themselves located in each screen 1 1 a, 1 1 b. Thus, even in the case of a door exposed to a strong wind, the risk of forming a fold between the two screens 1 1 a, 1 1 b is practically eliminated. The invention thus provides a door having the many advantages indicated. This door has in particular an excellent lateral tightness. In addition, thanks to its screens which can be assembled in the factory, the installation on site of a door according to the invention is considerably simpler than the installation of doors as they are known in the state of the technique which requires on-site assembly of the screens. Of course, the invention is not limited to the embodiment described above by way of example, but on the contrary embraces all of the embodiments. Thus the sheaths of each screen could be formed by an overlapping area of the panels and by two parallel weld lines or by a strip welded directly to the outer face of a panel. It is also possible to make the curtain in a single element of flexible material and then fold it to form two screens. It is conceivable to implement the invention in an embodiment in which the ends of the stiffening bars are directly applied against the uprights or against flexible or rigid slides arranged in the latter.

Claims

REVENDICATIONS
1. Porte comprenant deux montants latéraux (2), un caisson (3) transversal reliant les extrémités supérieures des deux montants et un rideau (10) mobile entre une position de fermeture dans laquelle il obture la baie formée par les montants (2) et le caisson (3) et une position d'ouverture dans laquelle il est replié sous le caisson (3), caractérisée en ce qu'elle comprend un rideau (10) constitué de deux écrans (1 1 a, 1 1 b) parallèles délimitant un matelas d'air, suspendus au niveau de la zone supérieure des montants, le rideau (10) comprenant : - au moins une sangle (20) de relèvement reliant la partie inférieure du rideau (10) à un arbre (21 ) monté au niveau du caisson (3), - et au moins un moyen de raidissement transversal rapporté sur chacun des écrans (1 1 a, 1 1 b), les bords latéraux de chaque écran (1 1 a, 1 1 b) venant en applique contre les montants pour former un contact latéral surfacique étanche. 1. Door comprising two lateral uprights (2), a transverse box (3) connecting the upper ends of the two uprights and a curtain (10) movable between a closed position in which it closes the opening formed by the uprights (2) and the box (3) and an open position in which it is folded under the box (3), characterized in that it comprises a curtain (10) consisting of two screens (1 1 a, 1 1 b) parallel delimiting an air mattress, suspended at the upper zone of the uprights, the curtain (10) comprising: - at least one lifting strap (20) connecting the lower part of the curtain (10) to a shaft (21) mounted on the level of the box (3), - and at least one transverse stiffening means attached to each of the screens (1 1 a, 1 1 b), the lateral edges of each screen (1 1 a, 1 1 b) coming into contact against the uprights to form a sealed surface surface contact.
2. Porte selon le revendication 1 caractérisée en ce que au moins un fourreau (15) est formé dans chaque écran (1 1 a,1 1 b), fourreau (15) dans lequel est engagé un moyen de raidissement. 2. Door according to claim 1 characterized in that at least one sheath (15) is formed in each screen (1 1 a, 1 1 b), sheath (15) in which is engaged a stiffening means.
3. Porte selon la revendication 2, caractérisée en ce que les fourreaux (15) de chacun des écrans (1 1 a, 1 1 b) sont en regard deux à deux. 3. Door according to claim 2, characterized in that the sleeves (15) of each of the screens (1 1 a, 1 1 b) are opposite two by two.
4. Porte selon la revendication 3, caractérisée en ce que, au moins une paire de deux barres (16) de raidissement, engagées dans deux fourreaux (1 5) en regard l'un de l'autre, sont reliées par au moins une entretoise (18). 4. Door according to claim 3, characterized in that, at least a pair of two stiffening bars (16), engaged in two sleeves (1 5) facing each other, are connected by at least one spacer (18).
5. Porte selon la revendication 4, caractérisée en ce que l'entretoise (18) présente une ouverture (21 ) pour le passage de la sangle (20) de relèvement. 5. Door according to claim 4, characterized in that the spacer (18) has an opening (21) for the passage of the lifting strap (20).
6. Porte selon la revendication 4 ou la revendication 5, caractérisée en ce qu'au moins deux paires de barres (16) de raidissement entretoisées alternent avec au moins une paire de barres (16) de raidissement non entretoisées, de telle sorte que, en position relevée du rideau, des plis de repliement alternés se forment symétriquement par rapport au plan d'ouverture de la porte. 6. Door according to claim 4 or claim 5, characterized in that at least two pairs of braced stiffening bars (16) alternate with at least one pair of unbraced stiffening bars (16), so that, in the raised position of the curtain, alternating folding folds are formed symmetrically with respect to the opening plane of the door.
7. Porte selon l'une des revendications 1 à 6 caractérisée en ce que la partie inférieure du rideau formée par le pli de jonction des deux écrans (1 1 a,1 1 b) reçoit un élément souple constitué par une gaine souple refermant un matériau souple. 7. Door according to one of claims 1 to 6 characterized in that the lower part of the curtain formed by the junction fold of the two screens (1 1 a, 1 1 b) receives a flexible element consisting of a flexible sheath closing a flexible material.
8. Porte selon la revendication 7, caractérisée en ce que l'élément souple est constitué par une barre souple (22) comprenant d'un ressort gainé de mousse. 8. Door according to claim 7, characterized in that the flexible element consists of a flexible bar (22) comprising a foam-sheathed spring.
9. Porte selon l'une des revendications 4 à 8, caractérisée en ce que les extrémités de chaque barre (16) de raidissement sont munies d'éléments de guidage par rapport à chacun des montants. 9. Door according to one of claims 4 to 8, characterized in that the ends of each stiffening bar (16) are provided with guide elements relative to each of the uprights.
10. Porte selon l'une des revendications 4 à 9, caractérisée en ce que les barres (16) de raidissement présentent une souplesse permettant d'absorber un choc anormal de sortir, de se désengager ou de se désappliquer des glissières sans subir de déformation permanente. 10. Door according to one of claims 4 to 9, characterized in that the stiffening bars (16) have a flexibility making it possible to absorb an abnormal shock to come out, to disengage or to disapply from the slides without undergoing deformation permed.
11. Porte selon l'une des revendications 8 à 10, caractérisée en ce que la barre souple (22) retenue dans le pli de jonction des deux écrans, la paire de barres (16) entretoisées inférieure et la paire de barres (16) non entretoisées consécutives sont à des distances telles que, en position relevée du rideau, la barre souple (22) dépasse des plis formés par chaque écran replié. 11. Door according to one of claims 8 to 10, characterized in that the flexible bar (22) retained in the junction fold of the two screens, the pair of lower braced bars (16) and the pair of bars (16) consecutive braces are at distances such that, in the raised position of the curtain, the flexible bar (22) protrudes from the folds formed by each folded screen.
12. Porte selon l'une des revendications 1 à 1 1 , caractérisée en ce que chaque écran (1 1 a,1 1 b) est constitué d'un complexe multicouche. 12. Door according to one of claims 1 to 1 1, characterized in that each screen (1 1 a, 1 1 b) consists of a multilayer complex.
13. Porte selon l'une des revendications 1 à 12, caractérisée en ce que chaque écran (1 1 a, 1 1 b) présente, à même hauteur, au moins un panneau transversal (12) en matériau transparent. 13. Door according to one of claims 1 to 12, characterized in that each screen (1 1 a, 1 1 b) has, at the same height, at least one transverse panel (12) of transparent material.
14. Porte selon l'une des revendications 1 à 5 ou 7 à 12, caractérisée en ce que, entre deux paires de barres entretroisées, chaque écran (1 1 a, 1 1 b) est muni d'au moins un plieur à mémoire de forme pouvant former un pli vers l'extérieur du rideau en position repliée de celui- ci. 14. Door according to one of claims 1 to 5 or 7 to 12, characterized in that, between two pairs of cross bars, each screen (1 1 a, 1 1 b) is provided with at least one memory folder of form capable of forming a fold towards the outside of the curtain in the folded position thereof.
15. Porte selon l'une des revendications 1 à 14, caractérisée en ce que le rideau (10) est formé dans un unique élément de matériau souple puis est replier sur lui-même pour former deux écrans. 15. Door according to one of claims 1 to 14, characterized in that the curtain (10) is formed in a single element of flexible material and is folded over on itself to form two screens.
16. Porte selon l'une des revendications 2 à 14, caractérisée en ce que chaque écran (1 1 a,1 1 b) comprend au moins deux panneaux de matériau souple transversaux reliés par un fourreau. 16. Door according to one of claims 2 to 14, characterized in that each screen (1 1 a, 1 1 b) comprises at least two panels of transverse flexible material connected by a sheath.
17. Porte selon l'une des revendications 9 à 16, caractérisée en ce que les extrémités de chaque barre (16) de raidissement d'une paire de barres non entretoisées sont munies d'un embout de guidage (28) présentant une partie plane (31 ) orientée dans le plan de l'écran dans lequel se trouve la barre. 17. Door according to one of claims 9 to 16, characterized in that the ends of each bar (16) for stiffening a pair of non-braced bars are provided with a guide end piece (28) having a flat part (31) oriented in the plane of the screen in which the bar is located.
18. Porte selon l'une des revendications 9 à 17, caractérisée en ce que une entretoise (33) relie les extrémités d'une paire de barres (16) et supporte un galet (32) pouvant s'engager entre deux glissières (24) et (25) formées dans chacun des montants verticaux (2). 18. Door according to one of claims 9 to 17, characterized in that a spacer (33) connects the ends of a pair of bars (16) and supports a roller (32) which can engage between two slides (24 ) and (25) formed in each of the vertical uprights (2).
19. Porte selon la revendication 18, caractérisée en ce que des embouts de remplissage (34) sont engagés à l'extrémité de chacune des barres (16). 19. Door according to claim 18, characterized in that filling tips (34) are engaged at the end of each of the bars (16).
20. Porte selon la revendication 1 ou la revendication 2, caractérisée en ce qu'un cable est engagé dans au moins un fourreau (15) dont les extrémités sont guidées par rapport aux montants verticaux. 20. Door according to claim 1 or claim 2, characterized in that a cable is engaged in at least one sheath (15) whose ends are guided relative to the vertical uprights.
EP04791549A 2003-10-17 2004-10-15 Double screen rapid door Active EP1680571B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0312169A FR2861121A1 (en) 2003-10-17 2003-10-17 Snap door for closing structural openings of building, includes curtain with two screens that delimit air cushion, and two transversal tightening bars connected on screens of curtain
PCT/FR2004/002638 WO2005038185A1 (en) 2003-10-17 2004-10-15 Double screen rapid door

Publications (2)

Publication Number Publication Date
EP1680571A1 true EP1680571A1 (en) 2006-07-19
EP1680571B1 EP1680571B1 (en) 2013-01-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04791549A Active EP1680571B1 (en) 2003-10-17 2004-10-15 Double screen rapid door

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US (1) US8695677B2 (en)
EP (1) EP1680571B1 (en)
JP (1) JP4914720B2 (en)
AU (2) AU2004282392A1 (en)
FR (1) FR2861121A1 (en)
WO (1) WO2005038185A1 (en)

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Also Published As

Publication number Publication date
AU2011201144A1 (en) 2011-04-07
US8695677B2 (en) 2014-04-15
FR2861121A1 (en) 2005-04-22
AU2011201144B2 (en) 2013-01-10
JP4914720B2 (en) 2012-04-11
JP2007508481A (en) 2007-04-05
US20070193698A1 (en) 2007-08-23
WO2005038185A1 (en) 2005-04-28
EP1680571B1 (en) 2013-01-16
AU2004282392A1 (en) 2005-04-28

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