EP0421899A1 - Device to hold under tension a sun protecting fabric, particularly for a verandah or pergola - Google Patents

Device to hold under tension a sun protecting fabric, particularly for a verandah or pergola Download PDF

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Publication number
EP0421899A1
EP0421899A1 EP90420429A EP90420429A EP0421899A1 EP 0421899 A1 EP0421899 A1 EP 0421899A1 EP 90420429 A EP90420429 A EP 90420429A EP 90420429 A EP90420429 A EP 90420429A EP 0421899 A1 EP0421899 A1 EP 0421899A1
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EP
European Patent Office
Prior art keywords
tension
arms
maintaining
linked
articulated
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
EP90420429A
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German (de)
French (fr)
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EP0421899B1 (en
Inventor
René Lauzier
Daniel Mollard
Jean François De Belval
Jean Paul Clement
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LAUZFLEX SA
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LAUZFLEX SA
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Publication date
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Priority to AT90420429T priority Critical patent/ATE84101T1/en
Publication of EP0421899A1 publication Critical patent/EP0421899A1/en
Application granted granted Critical
Publication of EP0421899B1 publication Critical patent/EP0421899B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0607—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with guiding-sections for supporting the movable end of the blind
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0611—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with articulated arms supporting the movable end of the blind for deployment of the blind
    • E04F10/0618—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with articulated arms supporting the movable end of the blind for deployment of the blind whereby the pivot axis of the articulation is perpendicular to the roller
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
    • E04F10/0651—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the arms
    • 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
    • E06B9/40—Roller blinds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0603—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with telescopic arms

Definitions

  • the present invention relates to a device for maintaining the tension of a sun protection fabric, of the kind which is deployed horizontally or with a slight inclination above a structure such as veranda, pergola, greenhouse or other similar construction. , with a framework on which a sun protection system can be mounted.
  • This invention applies, more particularly, to a sun protection fabric, one end of which is linked to a rotating winding member, preferably motorized, and the opposite end of which is linked to a movable load bar, comprising means in translational guidance.
  • Such a sun protection system thus has at least one fabric that can be deployed or rolled up, the load bar moving away from the winding member as the canvas is deployed, the useful part of which extends between the winding member and this load bar. Because of their large size and their horizontal or slightly inclined position, such fabrics offer a strong wind resistance, and must therefore be strongly stretched.
  • tensioning devices are currently used, which are all of a fairly similar principle: the fabric is generally stretched by means of a tension or torsion spring, and sometimes by a geared motor, which exerts an action on the load bar.
  • the force of the spring or the gearmotor is transmitted to the load bar by means of at least one cable, a textile strap or even a metal strip, so as to pull the load bar in the direction of its distance from the winding member.
  • a particular known solution is represented by French patent N ° 85 04 059/2 578 901 filed on March 12, 1985 in the name of ETABLISSEMENTS LAUZIER; this document describes a tensioning device, comprising at least one cable with one strand attached to the load bar of the fabric and with another strand linked to winding means, driven in synchronism with the winding means of the canvas the cable passes here on a deflection pulley which is urged by spring means in the direction of the tensioning of this cable, therefore of the canvas.
  • Each cable is advantageously wound on a frustoconical drum, forming successive turns of variable diameter; allowing an exact compensation of the length of the fabric.
  • the present invention aims to avoid all these drawbacks, by providing a device for maintaining tension in a new and simple design, which entirely eliminates the traction systems such as cables or straps, therefore also the return pulleys and the guide means. necessities by these pulleys, hence a simplification of construction and installation, while ensuring reliable and suitable operation providing, in particular, a substantially constant tension force.
  • the subject of the invention is a device for maintaining the tension of a sun protection shade, in particular for a veranda or pergola, of the type specified in the introduction, in which the tensioning means comprise at least two extendable arms with springs, each mounted in an articulated manner between a fixed point close to the fabric winding member and a movable point linked to the load bar, so that these extendable arms, urged by their springs in the direction of their elongation, exert on the load bar a push tending to move it away from the winding member of the fabric.
  • the invention proposes the replacement of current traction systems on the load bar by a pushing device, with extendable arms, bearing on fixed points which may be points on the chassis supporting the winding member of the canvas, these arms directly exerting their action on the load bar.
  • the tension-maintaining device comprises at least two extensible spring arms with an overall configuration in "X", the two arms crossing and being articulated with one another in their central parts , and each being articulated, at one end, at a fixed point close to the fabric winding member and, at the other end, at a mobile point linked to the load bar.
  • Each extensible arm here preferably comprises a first telescopic tension element articulated at the fixed point and connected, by an intermediate element articulated on the corresponding element of the other extensible arm, to a second telescopic tension element, articulated at the point mobile linked to the load bar.
  • This assembly is compact and self-supporting, and does not require any special support or guide; it is simply mounted in an articulated manner, for example by means of ball joints, between a fixed chassis element on the one hand and the load bar on the other hand, and he stays entirely independent of the means of guiding the load bar and the structure of the veranda, which can be produced for example according to French patent application N ° 59,01844 filed on February 13, 1989 in the name of SA FRANCIAFLEX.
  • the tension-maintaining device comprises at least two extensible spring arms with an overall "V" configuration, each of the two arms being articulated, at one end, at a point fixed near the fabric winding member and, at the other end, at a mobile point linked to the load bar.
  • the two extendable arms which can each comprise here a single telescopic tension element, are for example articulated at the same fixed point, and move away from each other from this fixed point.
  • Two or more pairs of arms that can be extended in "X" or "V” shape can be combined, in the case of very large fabrics.
  • the or each telescopic tensioning element of an extendable arm comprises a central rod linked to a first end-piece provided at one end of the element, a tube linked to a second end-piece located at the opposite end of the element, and a tubular cover surrounding the central rod, linked to the first end piece and sliding on the tube linked to the second end piece, a helical spring being mounted, with its ends pressed against the two end pieces, around the central rod and under the tube cited above.
  • the central metal rod is coated on the outside with a protective plastic sheath, while the tube, also metallic, has a protective internal coating in plastic, thus the coils of the spring come into contact with plastic parts, which significantly reduce friction and noise.
  • the tension maintenance device is applied to a sun protection fabric 1 deploying horizontally, or with a slight inclination either upwards or downwards, above a structure such as veranda, the framework of which is indicated in 2.
  • the fabric 1 has a rear edge linked to a winding tube 3, mounted rotating around a horizontal axis 4 and coupled to an electric drive motor, not shown , which can be housed inside the tube 3.
  • the front edge of the fabric 1 is moored to a movable load bar 5, which is guided by means of pads 6 along guide rails 7 fixed to the frame of the veranda 2, these rails can be elements such as rafters belonging to the frame itself.
  • the fabric 1 tensioning device comprises, in the embodiment according to FIGS. 1 and 2, two extensible arms 8 and 9 with an overall configuration in "M", that is to say two arms crossing in their central parts, where they are articulated to each other along an axis 10.
  • Each arm 8 or 9 is mounted between a fixed frame element 11, supporting the winding tube 3, and the bar 5.
  • the first arm 8 comprises a posterior telescopic tensioning element 12, articulated at 13 to the left part of the chassis element 11 and connected, via a central part 14, to an anterior telescopic tensioning element 15 , articulated at 16 on the right side of the load bar 5;
  • the second arm 9 comprises a posterior telescopic tensioning element 17, articulated at 18 to the right part of the chassis element 11 and connected, by means of a central part 19, to an anterior telescopic tensioning element 20 , articulated at 21 on the left side of the load bar 5.
  • Each telescopic tension element 12,15,17,20 contains a spring which tends to elongate this element, therefore also to lengthen the corresponding extensible arm 8 or 9, the detailed configuration of the tension elements being described below.
  • FIG. 3 shows a first variant of the tension maintenance device, with two extendable arms 22 and 23 having an overall configuration in "V", each arm 22 or 23 being able here to comprise a single telescopic tensioning element with spring.
  • the posterior ends of the two arms 22 and 23 are linked by the same articulation 24 to the central part of the fixed frame element 11, and separate from one another from the articulation 24 the first arm 22 has its front end articulated at 25 to the left part of the load bar 5; while the second arm 23 has its anterior end articulated at 26 to the right part of the load bar 5.
  • the tension-maintaining device may comprise four extendable arms, that is to say two pairs of arms in "V" shape with a first pair of arms 22,23 as described below. above, and a second pair of arms 27, 28 identical to the previous one.
  • the two extensible arms 22 and 23 retain an overall configuration in "V". but they are articulated at two distinct points, respectively 29 and 30, on the central part of the fixed chassis element 11.
  • Figure 6 shows the detail of a spring tension element, which can be one of the elements 12,15,17,20 used in the construction of the extensible arms 8 and 9 of the first embodiment, or even a element of the arms in "V", which have just been described in variants.
  • the telescopic element in question comprises, at one end, a first end piece 31 to which is linked a central metal rod 32, for example of steel, extending along the axis 33 of the element.
  • this element comprises a second end piece 34, to which is linked a metal tube 35, for example made of aluminum, which coaxially surrounds the rod 32 over a certain length, varying according to the degree of extension of the telescopic element.
  • a helical spring 36 is mounted and compressed in this element, the spring 36 being pressed by its ends against the two end pieces 31 and 34.
  • This spring 36 surrounds the central rod 32 and is, itself, surrounded by the tube 35.
  • a sheath protective plastic 37 covering the rod 32, and by a protective inner coating 35 in plastic of the tube 35.
  • a tubular cover 39m also made of plastic, is linked to the first end piece 31 and slides on the tube 35 linked to the second end piece 34.
  • the two end pieces 31 and 34 can be provided with threads, respectively 40 and 41, for mounting the articulation parts such as ball joints, or even for fixing the central parts 14 and 19. in the case of elements intended for the arms. in "X".
  • the extendable arms ensure a permanent thrust on the load bar 5, tending to move this bar away from the winding tube 3 and therefore ensuring the tensioning of the fabric 1.
  • These arms "follow" the movements of the load bar automatically, by modifying their length: - for the arms in "X” 8 and 9, FIG. 1 shows the deployed arms and FIG. 2 shows these folded arms: -
  • the trace in continuous lines indicates the deployed position, and the trace in broken lines corresponds to the folded position.
  • the tension holding device makes it possible to obtain a substantially constant tension of the fabric 1, in particular for positions of the load bar 5 comprised between a third and its entire stroke (at from the folded position).
  • the spring effect can be produced by at least one captive gas cylinder, constituting each arm or integrated into this arm; this spring effect can also result from at least one element subjected to a gas or liquid pressure supplied by an external source, such as a pump, providing a driving force for unwinding the fabric, the winding member for the canvas then being made resistant to this driving force thanks for example to a torsion spring.

Abstract

The device tensions a fabric (1) horizontally deployed above a structure such as a verandah or pergola (2), the fabric (1) having one end joined to a winding member (3) and its opposite end being joined to a movable load bar (5) whose translational movement (6, 7) is guided. Two spring-loaded extendable arms (8, 9) are each mounted, in an articulated manner, between a stationary point (13, 18) close to the winding member (3) and a movable point joined to the load bar (5). These arms (8, 9), urged by their springs in the direction of their extension, exert a thrust on the bar (5) tending to move it away from the winding member (3) and to tension the fabric (1). <IMAGE>

Description

La présente invention concerne un dispositif pour le maintien en tension d'une toile de protection solaire, du genre de celles qui sont déployées horizontalement ou avec une faible inclinaison au-dessus d'une structure telle que véranda, pergola, serre ou autre construction similaire, possédant une ossature sur laquelle peut se monter un système de protection solaire. Cette invention s'applique, plus particulièrement, à une toile de protection solaire dont une extrémité est liée à un organe rotatif d'enroulement, de préférence motorisé, et dont l'extrémité opposée est liée à une barre de charge mobile, comportant des moyens de guidage en translation.The present invention relates to a device for maintaining the tension of a sun protection fabric, of the kind which is deployed horizontally or with a slight inclination above a structure such as veranda, pergola, greenhouse or other similar construction. , with a framework on which a sun protection system can be mounted. This invention applies, more particularly, to a sun protection fabric, one end of which is linked to a rotating winding member, preferably motorized, and the opposite end of which is linked to a movable load bar, comprising means in translational guidance.

Un tel système de protection solaire possède ainsi au moins une toile pouvant être déployée ou enroulée, la barre de charge s'éloignant de l'organe d'enroulement au fur et à mesure du déploiement de la toile, dont la partie utile s'étend entre l'organe d'enroulement et cette barre de charge. En raison de leur grande dimension et de leur position horizontale ou faiblement inclinée, de telles toiles offrent une prise au vent importante, et doivent par conséquent être fortement tendues.Such a sun protection system thus has at least one fabric that can be deployed or rolled up, the load bar moving away from the winding member as the canvas is deployed, the useful part of which extends between the winding member and this load bar. Because of their large size and their horizontal or slightly inclined position, such fabrics offer a strong wind resistance, and must therefore be strongly stretched.

Pour obtenir la tension de la toile on utilise actuellement des dispositifs de mise en tension, qui sont tous d'un principe assez voisin : la toile est tendue généralement au moyen d'un ressort de traction ou de torsion, et quelquefois par un motoréducteur, qui exerce une action sur la barre de charge. L'effort du ressort ou du motoréducteur est transmis à la barre de charge par l'intermédiaire d'au moins un câble, d'une sangle textile ou encore d'un feuillard métallique, de manière à tirer la barre de charge, dans le sens de son éloignement de l'organe d'enroulement.To obtain the tension of the fabric, tensioning devices are currently used, which are all of a fairly similar principle: the fabric is generally stretched by means of a tension or torsion spring, and sometimes by a geared motor, which exerts an action on the load bar. The force of the spring or the gearmotor is transmitted to the load bar by means of at least one cable, a textile strap or even a metal strip, so as to pull the load bar in the direction of its distance from the winding member.

Une solution connue particulière est représentée par le brevet français N° 85 04059/2 578 901 déposé le 12 Mars 1985 au nom des ETABLISSEMENTS LAUZIER ; ce document décrit un dispositif de mise en tension, comprenant au moins un câble avec un brin attaché à la barre de charge de la toile et avec un autre brin lié à des moyens d'enroulement, entraînés en synchronisme avec les moyens d'enroulement de la toile le câble passe ici sur une poulie de renvoi qui est sollicitée par des moyens à ressort dans le sens de la mise en tension de ce câble, donc de la toile. Chaque câble s'enroule avantageuse ment sur un tambour de forme tronconique, en formant des spires successives de diamètre variable; permettant une compensation exacte de la longueur de la toile.A particular known solution is represented by French patent N ° 85 04 059/2 578 901 filed on March 12, 1985 in the name of ETABLISSEMENTS LAUZIER; this document describes a tensioning device, comprising at least one cable with one strand attached to the load bar of the fabric and with another strand linked to winding means, driven in synchronism with the winding means of the canvas the cable passes here on a deflection pulley which is urged by spring means in the direction of the tensioning of this cable, therefore of the canvas. Each cable is advantageously wound on a frustoconical drum, forming successive turns of variable diameter; allowing an exact compensation of the length of the fabric.

D 'autres réalisations existantes utilisent aussi des moyens d'enroulement et des poulies de renvoi pour les câbles, les sangles ou le feuillard, avec des dispositions diverses. La compensation des élongations différentielles existant entre la toile d'une part, et le câble, la sangle ou le feuillard d'autre part, est obtenu selon les constructeurs soit par un ressort de tension situé à l'intérieur de la barre de charge, soit par un ressort de torsion logé à l'intérieur de l'organe tubulaire d'enroulement de la toile.Other existing embodiments also use winding means and deflection pulleys for cables, straps or strip, with various arrangements. The compensation of the differential elongations existing between the fabric on the one hand, and the cable, the strap or the strip on the other hand, is obtained according to the manufacturers either by a tension spring located inside the load bar, either by a torsion spring housed inside the tubular fabric winding member.

Les dispositifs de mise en tension actuels, évoqués ci-dessus, présentent un certain nombre d'inconvénients :

  • 1. Ils imposent la présence d'un tube d'enroulement supplémentaire disgracieux du côté opposé au tube d'enroulement de la toile, ou bien de deux coulisses latérales qui servent à la fois de guides pour les extrémités de la barre de charge et de moyens de renvoi (avec poulies) pour le système de traction à câble, sangle ou feuillard.
  • 2. Les coulisses et autres moyens de guidage tels que rails, supportant ou guidant les poulies de renvoi, doivent être parfaitement parallèles entre eux et perpendiculaires au(x) tube(s) d'enroulement.
  • 3. Ces contraintes géométriques compliquent la pose de la toile de protection et de son dispositif de mise en tension la pose est donc longue et délicate.
  • 4. Les systèmes de traction, tels qu'à câbles, doivent avoir une longueur prédéterminée avec exactitude pour assurer les tensions prévues sur la toile.
  • 5. Ces systèmes de traction sont soumis à des tensions élevées, incompatibles avec les poulies de faible diamètre sur lesquelles ils doivent passer, ainsi qu'avec leurs propres dimensions, ces systèmes étant eux-mêmes de faible section pour ne pas avoir un encombrement trop important à l'état enroulé ; il en résulte que lesdits systèmes se détériorent assez vite, et que leur fonctionnement est bruyant.
Current tensioning devices, mentioned above, have a certain number of drawbacks:
  • 1. They impose the presence of an unsightly additional winding tube on the side opposite the canvas winding tube, or else two lateral slides which serve both as guides for the ends of the load bar and return means (with pulleys) for the cable, strap or strap traction system.
  • 2. The slides and other guiding means such as rails, supporting or guiding the return pulleys, must be perfectly parallel to each other and perpendicular to the winding tube (s).
  • 3. These geometric constraints complicate the installation of the protective fabric and its tensioning device the installation is therefore long and delicate.
  • 4. Traction systems, such as cables, must have a predetermined length with accuracy to ensure the tension provided on the canvas.
  • 5. These traction systems are subjected to high tensions, incompatible with the small diameter pulleys over which they must pass, as well as with their own dimensions, these systems being themselves of small section so as not to have too much bulk. important when rolled up; it follows that said systems deteriorate fairly quickly, and that their operation is noisy.

La présente invention vise à éviter tous ces inconvénients, en fournissant un dispositif de maintien en tension d'une conception nouvelle et simple, qui supprime entièrement les systèmes de traction tels que câbles ou sangles, donc aussi les poulies de renvoi et les moyens de guidage nécessités par ces poulies, d'où une simplification de construction et de pose, tout en assurant un fonctionnement fiable et adapté procurant, en particulier, une force de tension sensiblement constante.The present invention aims to avoid all these drawbacks, by providing a device for maintaining tension in a new and simple design, which entirely eliminates the traction systems such as cables or straps, therefore also the return pulleys and the guide means. necessities by these pulleys, hence a simplification of construction and installation, while ensuring reliable and suitable operation providing, in particular, a substantially constant tension force.

A cet effet, l'invention a pour objet un dispositif pour le maintien en tension d'une toi le de protection solaire, notamment pour véranda ou pergola, du genre précisé en introduction, dans lequel les moyens de mise en tension comprennent au moins deux bras extensibles à ressorts, montés chacun de façon articulée entre un point fixe proche de l'organe d'enroulement de la toile et un point mobile lié à la barre de charge, de telle sorte que ces bras extensibles, sollicités par leurs ressorts dans le sens de leur allongement, exercent sur la barre de charge une poussée tendant à l'éloigner de l'organe d'enroulement de la toile.To this end, the subject of the invention is a device for maintaining the tension of a sun protection shade, in particular for a veranda or pergola, of the type specified in the introduction, in which the tensioning means comprise at least two extendable arms with springs, each mounted in an articulated manner between a fixed point close to the fabric winding member and a movable point linked to the load bar, so that these extendable arms, urged by their springs in the direction of their elongation, exert on the load bar a push tending to move it away from the winding member of the fabric.

Ainsi, l'invention propose le remplacement des systèmes actuels de traction sur la barre de charge par un dispositif de poussée, avec des bras extensibles, prenant appui sur des points fixes qui peuvent être des points du châssis supportant l'organe d'enroulement de la toile, ces bras exerçant directement leur action sur la barre de charge.Thus, the invention proposes the replacement of current traction systems on the load bar by a pushing device, with extendable arms, bearing on fixed points which may be points on the chassis supporting the winding member of the canvas, these arms directly exerting their action on the load bar.

Dans une forme de réalisation avantageuse de l'invention, le dispositif de maintien en tension comprend au moins deux bras extensibles à ressorts avec une configuration d'ensemble en "X", les deux bras se croisant et étant articulés entre eux dans leurs parties centrales, et étant articulés chacun, par une extrémité, à un point fixe proche de l'organe d'enroulement de la toile et, par l'autre extrémité, à un point mobile lié à la barre de charge. Chaque bras extensible comprend ici, de préférence, un premier élément de tension télescopique articulé au point fixe et relié, par un élément intermédiaire articulé sur l'élément correspondant de l'autre bras extensible, à un deuxième élénient de tension télescopique, articulé au point mobile lié à la barre de charge.In an advantageous embodiment of the invention, the tension-maintaining device comprises at least two extensible spring arms with an overall configuration in "X", the two arms crossing and being articulated with one another in their central parts , and each being articulated, at one end, at a fixed point close to the fabric winding member and, at the other end, at a mobile point linked to the load bar. Each extensible arm here preferably comprises a first telescopic tension element articulated at the fixed point and connected, by an intermediate element articulated on the corresponding element of the other extensible arm, to a second telescopic tension element, articulated at the point mobile linked to the load bar.

La configuration en "X" permet d'obtenir une tension de la toile sensiblement constante, pour l'ensemble des positions de la barre de charge correspondant à une toile assez fortement déroulée donc nécessitant un maintien en tension efficace. Cette configuration en "X" a aussi l'avantage d'être bien adaptée à une toile de portée importante, même avec une largeur réduite, les deux bras étant rétractés et se plaçant l'un parallèlement à l'autre lorsque la toile est entièrement enroulée. De plus, l'ensemble formé par les deux bras en "X" peut être prémonté en usine, puis facilement transporté et posé. Cet ensemble est compact et autoporteur, et ne nécessite aucun support ou guide spécial il est simplement monté de façon articulée, par exemple au moyen de rotules, entre un élément de châssis fixe d'une part et la barre de charge d'autre part, et il reste entièrement indépendant des moyens de guidage de la barre de charge et de la structure de la véranda, réalisables par exemple selon la demande de brevet français N° 59 01844 déposée le 13 Février 1989 au nom de la S.A. FRANCIAFLEX.The configuration in "X" makes it possible to obtain a tension of the fabric which is substantially constant, for all the positions of the load bar corresponding to a fabric which is quite unrolled therefore requiring effective tension maintenance. This "X" configuration also has the advantage of being well suited to a canvas with a large range, even with a reduced width, the two arms being retracted and placed one parallel to the other when the canvas is fully rolled up. In addition, the assembly formed by the two "X" arms can be pre-assembled in the factory, then easily transported and installed. This assembly is compact and self-supporting, and does not require any special support or guide; it is simply mounted in an articulated manner, for example by means of ball joints, between a fixed chassis element on the one hand and the load bar on the other hand, and he stays entirely independent of the means of guiding the load bar and the structure of the veranda, which can be produced for example according to French patent application N ° 59,01844 filed on February 13, 1989 in the name of SA FRANCIAFLEX.

Selon une autre forme de réalisation de l'invention, le dispositif de maintien en tension comprend au moins deux bras extensibles à ressorts avec une configuration d'ensemble en "V", chacun des deux bras étant articulé, par une extrémité, à un point fixe proche de l'organe d'enroulement de la toile et, par l'autre extrémité, à un point mobile lié à la barre de charge. Les deux bras extensibles, pouvant comporter chacun ici un seul élément de tension télescopique, sont par exemple articulés au même point fixe, et s'écartent l'un de l'autre à partir de ce point fixe.According to another embodiment of the invention, the tension-maintaining device comprises at least two extensible spring arms with an overall "V" configuration, each of the two arms being articulated, at one end, at a point fixed near the fabric winding member and, at the other end, at a mobile point linked to the load bar. The two extendable arms, which can each comprise here a single telescopic tension element, are for example articulated at the same fixed point, and move away from each other from this fixed point.

Deux ou plusieurs paires de bras extensibles en "X" ou en "V" peuvent être associées, dans le cas de toiles de grande largeur.Two or more pairs of arms that can be extended in "X" or "V" shape can be combined, in the case of very large fabrics.

Selon une autre caractéristique, le ou chaque élément de tension télescopique d'un bras extensible comprend une tige centrale liée à un premier embout prévu à une extrémité de l'élément, un tube lié à un deuxième embout situé à l'extrémité opposé de l'élément, et un cache tubulaire entourant la tige centrale, lié au premier embout et coulissant sur le tube lié au deuxième embout, un ressort hélicoïdal étant monté, avec ses extrémités appuyées contre les deux embouts, autour de la tige centrale et sous le tube précité. De préférence, la tige centrale métallique est revêtue extérieurement d'une gaine protectrice en matière plastique, tandis que le tube, également métallique, comporte un revêtement intérieure protecteur en matière plastique ainsi, les spires du ressort viennent au contact de parties en matière plastique, qui réduisent considérablement les frottements et les bruits.According to another characteristic, the or each telescopic tensioning element of an extendable arm comprises a central rod linked to a first end-piece provided at one end of the element, a tube linked to a second end-piece located at the opposite end of the element, and a tubular cover surrounding the central rod, linked to the first end piece and sliding on the tube linked to the second end piece, a helical spring being mounted, with its ends pressed against the two end pieces, around the central rod and under the tube cited above. Preferably, the central metal rod is coated on the outside with a protective plastic sheath, while the tube, also metallic, has a protective internal coating in plastic, thus the coils of the spring come into contact with plastic parts, which significantly reduce friction and noise.

De toute façon, l'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexe représentant, à titre d'exemples non limitatifs, quelques formes d'exécution de ce dispositif pour le maintien en tension d'une toile de protection solaire, notamment pour véranda ou pergola :

  • Figure 1 est une vue générale, en perspective, d'une toile de protection solaire équipée d'un dispositif de maintien en tension conforme à l'invention ;
  • Figure 2 est une vue en plan par dessus de la toile de figure 1 et de son dispositif de maintien en tension, en position repliée ;
  • Figures 3, 4 et 5 sont des vues en plan, très schématiques, de variantes de ce dispositif de maintien en tension ;
  • Figure 6 est une vue de détail, à échelle agrandie et en coupe longitudinale d'un élément de tension télescopique du dispositif selon l'invention.
In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting examples, some embodiments of this device for maintaining tension in d '' a sun protection fabric, especially for veranda or pergola:
  • Figure 1 is a general perspective view of a sun protection fabric equipped with a tension maintenance device according to the invention;
  • Figure 2 is a plan view from above of the fabric of Figure 1 and its tension maintenance device, in the folded position;
  • Figures 3, 4 and 5 are plan views, very schematic, of variants of this tension maintenance device;
  • Figure 6 is a detail view, on an enlarged scale and in longitudinal section of a telescopic tension element of the device according to the invention.

Comme le montrent les figures 1 et 2, le dispositif de maintien en tension s'applique à une toile de protection solaire 1 se déployant horizontalement, ou avec une légère inclinaison soit vers le haut, soit vers le bas, au-dessus d'une structure tel que véranda dont l'ossature est indiquée en 2. La toile 1 possède un bord postérieur lié à un tube d'enroulement 3, monté tournant autour d'un axe horizontal 4 et accouplé à un moteur électrique d'entraînement, non représenté, qui peut être logé à l'intérieur du tube 3. Le bord antérieur de la toile 1 est amarré à une barre de charge mobile 5, qui est guidée au moyen de patins 6 le long de rails de guidage 7 fixés à l'ossature de la véranda 2, ces rails pouvant être des éléments tels que chevrons appartenant à l'ossature elle-même.As shown in FIGS. 1 and 2, the tension maintenance device is applied to a sun protection fabric 1 deploying horizontally, or with a slight inclination either upwards or downwards, above a structure such as veranda, the framework of which is indicated in 2. The fabric 1 has a rear edge linked to a winding tube 3, mounted rotating around a horizontal axis 4 and coupled to an electric drive motor, not shown , which can be housed inside the tube 3. The front edge of the fabric 1 is moored to a movable load bar 5, which is guided by means of pads 6 along guide rails 7 fixed to the frame of the veranda 2, these rails can be elements such as rafters belonging to the frame itself.

Le dispositif de maintien en tension de la toile 1 comprend, dans la forme d'exécution selon les figures 1 et 2, deux bras extensibles 8 et 9 avec une configuration d'ensemble en "M", c'est-à-dire deux bras se croisant dans leurs parties centrales, où ils sont articulés l'un à l'autre suivant un axe 10. Chaque bras 8 ou 9 est monté entre un élément de châssis fixe 11, supportant le tube d'enroulement 3, et la barre de charge 5. Plus particulièrement :
- le premier bras 8 comprend un élément de tension télescopique postérieur 12, articulé en 13 à la partie gauche de l'élément de châssis 11 et relié, par l'intermédiaire d'une pièce centrale 14, à un élément de tension télescopique antérieur 15, articulé en 16 à la partie droite de la barre de charge 5 ;
- le second bras 9 comprend un élément de tension télescopique postérieur 17, articulé en 18 à la partie droite de l'élément de châssis 11 et relié, par l'intermédiaire d'une pièce centrale 19, à un élément de tension télescopique antérieur 20, articulé en 21 à la partie gauche de la barre de charge 5.The fabric 1 tensioning device comprises, in the embodiment according to FIGS. 1 and 2, two extensible arms 8 and 9 with an overall configuration in "M", that is to say two arms crossing in their central parts, where they are articulated to each other along an axis 10. Each arm 8 or 9 is mounted between a fixed frame element 11, supporting the winding tube 3, and the bar 5. More specifically:
the first arm 8 comprises a posterior telescopic tensioning element 12, articulated at 13 to the left part of the chassis element 11 and connected, via a central part 14, to an anterior telescopic tensioning element 15 , articulated at 16 on the right side of the load bar 5;
- The second arm 9 comprises a posterior telescopic tensioning element 17, articulated at 18 to the right part of the chassis element 11 and connected, by means of a central part 19, to an anterior telescopic tensioning element 20 , articulated at 21 on the left side of the load bar 5.

Les pièces centrales respectives 14 et 19 des deux bras extensibles 8 et 9 sont articulées l'une à l'autre autour de l'axe précité 10. Chaque élément de tension télescopique 12,15,17,20 renferme un ressort qui tend à allonger cet élément, donc à allonger aussi le bras extensible correspondant 8 ou 9, la configuration de détail des éléments de tension étant décrite plus bas.The respective central parts 14 and 19 of the two extendable arms 8 and 9 are articulated to one another around the aforementioned axis 10. Each telescopic tension element 12,15,17,20 contains a spring which tends to elongate this element, therefore also to lengthen the corresponding extensible arm 8 or 9, the detailed configuration of the tension elements being described below.

La figure 3 montre une première variante du dispositif de maintien en tension, avec deux bras extensibles 22 et 23 possédant une configuration d'ensemble en "V", chaque bras 22 ou 23 pouvant comporter ici un seul élément de tension télescopique à ressort. Les extrémités postérieures des deux bras 22 et 23 sont liées par une même articulation 24 à la partie centrale de l'élément de châssis fixe 11, et s'écartent l'un de l'autre à partir de l'articulation 24 le premier bras 22 a son extrémité antérieure articulée en 25 à la partie gauche de la barre de charge 5; tandis que le second bras 23 a son extrémité antérieure articulée en 26 à la partie droite de la barre de charge 5.FIG. 3 shows a first variant of the tension maintenance device, with two extendable arms 22 and 23 having an overall configuration in "V", each arm 22 or 23 being able here to comprise a single telescopic tensioning element with spring. The posterior ends of the two arms 22 and 23 are linked by the same articulation 24 to the central part of the fixed frame element 11, and separate from one another from the articulation 24 the first arm 22 has its front end articulated at 25 to the left part of the load bar 5; while the second arm 23 has its anterior end articulated at 26 to the right part of the load bar 5.

Pour une toile l de grande largeur, comme le montre la figure 4, le dispositif de maintien en tension peut comporter quatre bras extensibles, soit deux paires de bras en "V" avec une première paire de bras 22,23 telle que décrite ci-dessus, et une deuxième paire de bras 27,28 identique à la précédente.For a very wide fabric l, as shown in FIG. 4, the tension-maintaining device may comprise four extendable arms, that is to say two pairs of arms in "V" shape with a first pair of arms 22,23 as described below. above, and a second pair of arms 27, 28 identical to the previous one.

Dans une autre variante, illustrée par la figure 5, les deux bras extensibles 22 et 23 conservent une configuration d'ensemble en "V". mais ils sont articulés en deux points distincts, respectivement 29 et 30, sur la partie centrale de l'élément de châssis fixe 11.In another variant, illustrated by FIG. 5, the two extensible arms 22 and 23 retain an overall configuration in "V". but they are articulated at two distinct points, respectively 29 and 30, on the central part of the fixed chassis element 11.

La figure 6 montre le détail d'un élément de tension à ressort, pouvant être l'un des éléments 12,15,17,20 entrant dans la construction des bras extensibles 8 et 9 de la première forme d'exécution, ou encore un élément des bras en "V", qui viennent d'être décrits en variantes.Figure 6 shows the detail of a spring tension element, which can be one of the elements 12,15,17,20 used in the construction of the extensible arms 8 and 9 of the first embodiment, or even a element of the arms in "V", which have just been described in variants.

L'élément télescopique en question comprend, à une extrémité, un premier embout 31 auquel est liée une tige centrale métallique 32, par exemple en acier, s'étendant suivant l'axe 33 de l'élément. A son extrémité opposée, cet élément comprend un deuxième embout 34, auquel est lié un tube métallique 35, par exemple en aluminium, qui entoure coaxialement la tige 32 sur une certaine longueur, variable selon le degré d'extension de l'élément télescopique.The telescopic element in question comprises, at one end, a first end piece 31 to which is linked a central metal rod 32, for example of steel, extending along the axis 33 of the element. At its opposite end, this element comprises a second end piece 34, to which is linked a metal tube 35, for example made of aluminum, which coaxially surrounds the rod 32 over a certain length, varying according to the degree of extension of the telescopic element.

Un ressort hélicoïdal 36 est monté et comprimé dans cet élément, le ressort 36 étant appuyé par ses extrémités contre les deux embouts 31 et 34. Ce ressort 36 entoure la tige centrale 32 et est, lui-même, entouré par le tube 35. Toutefois, le contact direct du ressort 36 avec la tige centrale 32 et avec le tube 35, pièces métalliques, est empêché par ne gaine protectrice en matière plastique 37 habillant la tige 32, et par un revêtement intérieur protecteur 35 en matière plastique du tube 35. Un cache tubulaire 39m également réalisable en matière plastique, est lié au premier embout 31 et coulisse sur le tube 35 lié au deuxième embout 34.A helical spring 36 is mounted and compressed in this element, the spring 36 being pressed by its ends against the two end pieces 31 and 34. This spring 36 surrounds the central rod 32 and is, itself, surrounded by the tube 35. However , the direct contact of the spring 36 with the central rod 32 and with the tube 35, metal parts, is prevented by a sheath protective plastic 37 covering the rod 32, and by a protective inner coating 35 in plastic of the tube 35. A tubular cover 39m also made of plastic, is linked to the first end piece 31 and slides on the tube 35 linked to the second end piece 34.

Les deux embouts 31 et 34 peuvent être munis de filetages, respectivement 40 et 41, pour le montage des pièces d'articulation telles que rotules, ou encore pour la fixation des pièces centrales 14 et 19. dans le cas d'éléments destinés aux bras en "X".The two end pieces 31 and 34 can be provided with threads, respectively 40 and 41, for mounting the articulation parts such as ball joints, or even for fixing the central parts 14 and 19. in the case of elements intended for the arms. in "X".

Dans tous les cas, les bras extensibles assurent une poussée permanente sur la barre de charge 5, tendant à éloigner cette barre du tube d'enroulement 3 et assurant, par conséquent, le maintien en tension de la toile 1. Ces bras "suivent" automatiquement les déplacements de la barre de charge, en modifiant leur longueur :
- pour les bras en "X" 8 et 9, la figure 1 montre les bras déployés et la figure 2 montre ces bras repliés :
- pour les bras en "V" 22,23,27,28 des figures 3 à 5, le trace en traits continu indique la position déployée, et le tracé en traits mixtes correspond à la position repliée.In all cases, the extendable arms ensure a permanent thrust on the load bar 5, tending to move this bar away from the winding tube 3 and therefore ensuring the tensioning of the fabric 1. These arms "follow" the movements of the load bar automatically, by modifying their length:
- for the arms in "X" 8 and 9, FIG. 1 shows the deployed arms and FIG. 2 shows these folded arms:
- For the arms in "V" 22,23,27,28 of FIGS. 3 to 5, the trace in continuous lines indicates the deployed position, and the trace in broken lines corresponds to the folded position.

Il est à noter que le dispositif de maintien en tension selon l'invention permet d'obtenir une tension sensiblement constante de la toile 1, notamment pour des positions de la barre de charge 5 comprises entre un tiers et la totalité de sa course (à partir de la position repliée).It should be noted that the tension holding device according to the invention makes it possible to obtain a substantially constant tension of the fabric 1, in particular for positions of the load bar 5 comprised between a third and its entire stroke (at from the folded position).

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de ce dispositif de mise en tension pour toile de protection solaire qui ont été décrites ci-dessus, à titre d'exemples ; elle en embrasse, au contraire toutes les variantes de réalisation et d'application respectant le même principe. Ainsi, l'on ne s'éloignerait pas du cadre de l'invention par des modifications de détail des éléments de tension télescopiques, ou encore par le choix d'une configuration d'ensemble différente des bras extensibles, par exemple avec deux ou plusieurs paires de bras en "X". Plus particulièrement, des variantes sont envisageables pour l'obtention de l'effet de ressort des bras extensibles : l'effet de ressort peut être produit par au moins un vérin à gaz captif, constituant chaque bras ou intégré à ce bras ; cet effet de ressort peut aussi resul ter d'au moins un élément soumis a une pression de gaz ou de liquide fournie par une source extérieure, telle que pompe, procurant une force motrice de déroulement de la toile, l'organe d'enroulement de la toile étant alors rendu résistant à cette force motrice grâce par exemple à un ressort de torsion.It goes without saying that the invention is not limited to the sole embodiments of this tensioning device for sun protection fabric which have been described above, by way of examples; it embraces it, on the contrary all the variants of implementation and application respecting the same principle. Thus, one would not depart from the scope of the invention by modifications of detail of the telescopic tensioning elements, or even by the choice of a different overall configuration of the extendable arms, for example with two or more pairs of arms in "X". More particularly, variants can be envisaged for obtaining the spring effect of the extendable arms: the spring effect can be produced by at least one captive gas cylinder, constituting each arm or integrated into this arm; this spring effect can also result from at least one element subjected to a gas or liquid pressure supplied by an external source, such as a pump, providing a driving force for unwinding the fabric, the winding member for the canvas then being made resistant to this driving force thanks for example to a torsion spring.

Claims (11)

1. Dispositif pour le maintien en tension d'une toile de protection solaire (1), déploée horizontalement ou avec une faible inclinaison au-dessus d'une structure telle que véranda, pergola, serre ou similaire, possédant une ossature (2), la toile de protection solaire (1) ayant une extrémité liée à un organe rotatif d'enroulement (3), de préférence motorisé, et son extrémité opposée étant liée à une barre de charge mobile (5), comportant des moyens de guidage en translation (6,7) caractérisé en ce qu'il comprend au moins deux bras extensibles à ressorts (8,9,22,23,27,28), montés chacun de façon articulée entre un point fixe (13,18,24,29,30) proche de l'organe d'enroulement (3) de la toile (1) et un point mobile(16,21,25,26) lié à la barre de charge (5), de telle sorte que ces bras extensibles, sollicités par leurs ressorts (36) dans le sens de leur allongement,exercent sur la barre de charge (5) une poussée tendant à l'éloigner de l'organe d'enroulement (3) de la toile (1).1. Device for maintaining the tension of a sun protection fabric (1), deployed horizontally or with a slight inclination above a structure such as a veranda, pergola, greenhouse or the like, having a frame (2), the solar protection fabric (1) having one end linked to a rotary winding member (3), preferably motorized, and its opposite end being linked to a movable load bar (5), comprising means for guiding in translation (6,7) characterized in that it comprises at least two extensible spring arms (8,9,22,23,27,28), each mounted in an articulated manner between a fixed point (13,18,24,29 , 30) close to the winding member (3) of the fabric (1) and a mobile point (16,21,25,26) linked to the load bar (5), so that these extendable arms , urged by their springs (36) in the direction of their elongation, exert on the load bar (5) a push tending to move it away from the winding member (3 ) of the canvas (1). 2. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 1, caractérisé en ce que les bras extensibles (8,9,22,23,27,28) sont articulés en des points fixes (13,18,24,29,30) qui sont des points du châssis (11) supportant l'organe d'enroulement (3) de la toile (1).2. Device for maintaining the tension of a sun protection fabric according to claim 1, characterized in that the extendable arms (8,9,22,23,27,28) are articulated at fixed points (13,18 , 24,29,30) which are points of the frame (11) supporting the winding member (3) of the fabric (1). 3. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 1 ou 2, caractérisé en ce qu'il comprend au moins deux bras extensibles à ressorts (8,9) avec une configuration d'ensemble en "X", les deux bras (8,9) se croisant at étant articulés entre eux (en 10) dans leurs parties centrales (14,19), et étant articulés chacun, par une extrémité, à un point fixe (13,18) proche de l'organe d'enroulement (3) de la toile (1) et, par l'autre extrémité, à un point mobile (16,21) lié à la barre de charge (5).3. Device for maintaining the tension of a sun protection fabric according to claim 1 or 2, characterized in that it comprises at least two extensible spring arms (8,9) with an overall configuration in "X ", the two arms (8,9) crossing at being articulated with one another (at 10) in their central parts (14,19), and being each articulated, by one end, at a fixed point (13,18) close of the winding member (3) of the fabric (1) and, by the other end, at a mobile point (16,21) linked to the load bar (5). 4. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 3, caractérisé en ce que chaque bras extensible (8,9) comprend premier élément de tension télescopique (12,17) articulé au point fixe (13,18) et relié, par un élément intermédiaire (14,19) articulé (en 10) sur l'élément correspondant de l'autre extensible, à un deuxième élément de tension télescopique (15,20), articulé au point mobile (16,21) lié à la barre de charge (5).4. Device for maintaining the tension of a sun protection fabric according to claim 3, characterized in that each extendable arm (8, 9) comprises first telescopic tension element (12, 17) articulated at the fixed point (13, 18) and connected, by an intermediate element (14,19) articulated (at 10) on the corresponding element of the other extensible, to a second telescopic tension element (15,20), articulated at the movable point (16, 21) linked to the load bar (5). 5. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 1 ou 2, caractérisé en ce qu'il comprend au moins deux bras extensibles à ressorts (22,23,27,28) avec une configuration d'ensemble en "V", chacun des deux bras étant articulé, par une extrémités à un point fixe (24,29,30) proche de l'organe d'enroulement (3) de la toile (1) et, par l'autre extrémité, à un point mobile (25,26) lié à la barre de charge (5).5. Device for maintaining the tension of a solar protection fabric according to claim 1 or 2, characterized in that it comprises at least two extensible spring arms (22,23,27,28) with an overall "V" configuration, each of the two arms being articulated, at one end at a fixed point (24,29,30) close to the 'winding member (3) of the fabric (1) and, by the other end, to a movable point (25,26) connected to the load bar (5). 6. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 5, caractérisé en ce que les bras extensibles à configuration en "V" (22,23,27,28) comportent chacun un seul élément de tension télescopique.6. Device for maintaining the tension of a sun protection fabric according to claim 5, characterized in that the extendable arms in "V" configuration (22,23,27,28) each comprise a single telescopic tension element . 7. Dispositif pour le maintien en tension d'une toile de protection solaire selon l'une quelconque des revendications 3 à 6, caractérisé en ce qu'il comprend deux ou plusieurs paires de bras extensibles en "X" (8,9) ou en "V" (22,23,27,28).7. Device for maintaining the tension of a sun protection fabric according to any one of claims 3 to 6, characterized in that it comprises two or more pairs of extensible arms in "X" (8,9) or in "V" (22,23,27,28). 8. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 4 ou 6, caractérisé en ce que le ou chaque élément de tension télescopique (12,15,17,20) d'un bras extensible (8,9,22,23,27,28) comprend une tige centrale (32) liée à un premier embout (31) prévu à une extrémité de l'élément, un tube (35) lié à un deuxième embout (34) situé à l'extrémité opposée de l'élément, et un cache tubulaire (39) entourant la tige centrale (32), lié au premier embout (31) et coulissant sur le tube (35) lié au deuxième embout (34), un ressort hélicoïdal (36) étant monté, avec ses extrémités appuyées contre les deux embouts (31,34), autour de la tige centrale (32) et sous le tube précité (35).8. Device for maintaining the tension of a sun protection fabric according to claim 4 or 6, characterized in that the or each telescopic tension element (12,15,17,20) of an extendable arm (8, 9,22,23,27,28) comprises a central rod (32) linked to a first end piece (31) provided at one end of the element, a tube (35) linked to a second end piece (34) located at the opposite end of the element, and a tubular cover (39) surrounding the central rod (32), linked to the first end piece (31) and sliding on the tube (35) linked to the second end piece (34), a helical spring ( 36) being mounted, with its ends pressed against the two end pieces (31, 34), around the central rod (32) and under the aforementioned tube (35). 9. Dispositif pour le maintien en tension d'une toile de protection solaire selon la revendication 8, caractérisé en ce que la tige centrale (32), métallique, est revêtue extérieurement d'une gaine protectrice (37) en matière plastique, tandis que le tube (35), également métallique, comporte un revêtement intérieur (38) en matière plastique, de sorte que les spires du ressort (36) viennent au contact de parties en matière plastique.9. Device for maintaining the tension of a sun protection fabric according to claim 8, characterized in that the central rod (32), metallic, is coated externally with a protective sheath (37) made of plastic, while the tube (35), also metallic, has an inner coating (38) of plastic material, so that the turns of the spring (36) come into contact with plastic parts. 10. Dispositif pour le maintien en tension d'une toile de protection solaire selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'effet de ressort des bras extensibles est produit par au moins un vér in à gaz captif, constituant chaque bras ou intégré à ce bras.10. Device for maintaining the tension of a solar protection fabric according to any one of claims 1 to 7, characterized in that the spring effect of the extendable arms is produced by at least one gas-insulated cylinder, constituting each arm or integrated into this arm. 11. Dispositif pour le maintien en tension d'une toile de protection solaire selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'effet de ressort des bras extensibles résulte d'au moins un élément soumis à une pression de gaz ou de liquide fournie par une source extérieure procurant une force motrice de déroulement de la toile (1), l'organe d'enroulement (3) de la toile étant rendu résistant à cette force motrice grâce par exemple à un ressort de torsion.11. Device for maintaining the tension of a sun protection fabric according to any one of claims 1 to 7, characterized in that the spring effect of the extendable arms results from at least one element subjected to a pressure of gas or liquid supplied by an external source providing a driving force for unwinding the fabric (1), the winding member (3) for the fabric being made resistant to this driving force by, for example, a torsion spring.
EP90420429A 1989-10-04 1990-10-03 Device to hold under tension a sun protecting fabric, particularly for a verandah or pergola Expired - Lifetime EP0421899B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90420429T ATE84101T1 (en) 1989-10-04 1990-10-03 DEVICE TO KEEP A PARASOL CANOPY TENSIONED, PARTICULARLY FOR A VERANDA OR PERGOLA.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913305A FR2652603A1 (en) 1989-10-04 1989-10-04 DEVICE FOR THE TENSIONING OF A SUN PROTECTION FABRIC, ESPECIALLY FOR VERANDA OR PERGOLA.
FR8913305 1989-10-04

Publications (2)

Publication Number Publication Date
EP0421899A1 true EP0421899A1 (en) 1991-04-10
EP0421899B1 EP0421899B1 (en) 1992-12-30

Family

ID=9386302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420429A Expired - Lifetime EP0421899B1 (en) 1989-10-04 1990-10-03 Device to hold under tension a sun protecting fabric, particularly for a verandah or pergola

Country Status (7)

Country Link
EP (1) EP0421899B1 (en)
AT (1) ATE84101T1 (en)
DE (1) DE69000703T2 (en)
DK (1) DK0421899T3 (en)
ES (1) ES2037540T3 (en)
FR (1) FR2652603A1 (en)
GR (1) GR3007078T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2889226A1 (en) * 2005-07-30 2007-02-02 Aero Stores Sarl Pergola for e.g. protection against sunlight, has blind including chassis with rails and clouding canvas provided between chassis rails which are constituted by pergola rails receiving carriage equipped with support unit transversal to slit
US20100060028A1 (en) * 2008-09-08 2010-03-11 Rameshbhai Kalabhai Patel Automobile sun visor with electromechanical sun shade and methods of use thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1413596A (en) * 1920-04-27 1922-04-25 William C Langdon Power-operated awning
GB322046A (en) * 1928-10-11 1929-11-28 Arthur Claud Page Improvements in and connected with sun blinds or awnings
FR692320A (en) * 1930-03-20 1930-11-04 Strut frame for roll-out tents
FR798517A (en) * 1935-02-19 1936-05-19 Etaix & Cie Awning frame with extendable arms
FR2429317A1 (en) * 1978-06-20 1980-01-18 Farnier & Penin Return sprung roller blind for vehicle - uses pantograph to maintain draw bar alignment, including double scissor frame between head rail and bar
FR2588307A1 (en) * 1985-10-04 1987-04-10 Farnier & Penin Motorised screen device
DE8705516U1 (en) * 1987-04-14 1987-07-09 Moshacke, Werner, 8643 Kueps, De

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1413596A (en) * 1920-04-27 1922-04-25 William C Langdon Power-operated awning
GB322046A (en) * 1928-10-11 1929-11-28 Arthur Claud Page Improvements in and connected with sun blinds or awnings
FR692320A (en) * 1930-03-20 1930-11-04 Strut frame for roll-out tents
FR798517A (en) * 1935-02-19 1936-05-19 Etaix & Cie Awning frame with extendable arms
FR2429317A1 (en) * 1978-06-20 1980-01-18 Farnier & Penin Return sprung roller blind for vehicle - uses pantograph to maintain draw bar alignment, including double scissor frame between head rail and bar
FR2588307A1 (en) * 1985-10-04 1987-04-10 Farnier & Penin Motorised screen device
DE8705516U1 (en) * 1987-04-14 1987-07-09 Moshacke, Werner, 8643 Kueps, De

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2889226A1 (en) * 2005-07-30 2007-02-02 Aero Stores Sarl Pergola for e.g. protection against sunlight, has blind including chassis with rails and clouding canvas provided between chassis rails which are constituted by pergola rails receiving carriage equipped with support unit transversal to slit
US20100060028A1 (en) * 2008-09-08 2010-03-11 Rameshbhai Kalabhai Patel Automobile sun visor with electromechanical sun shade and methods of use thereof
US8308217B2 (en) * 2008-09-08 2012-11-13 Rameshbhai Kalabhai Patel Automobile sun visor with electromechanical sun shade and methods of use thereof

Also Published As

Publication number Publication date
ATE84101T1 (en) 1993-01-15
GR3007078T3 (en) 1993-07-30
DK0421899T3 (en) 1993-04-13
DE69000703T2 (en) 1993-05-13
EP0421899B1 (en) 1992-12-30
FR2652603B1 (en) 1995-02-24
FR2652603A1 (en) 1991-04-05
DE69000703D1 (en) 1993-02-11
ES2037540T3 (en) 1993-06-16

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