EP4036364B1 - Slat for a roller blind - Google Patents

Slat for a roller blind Download PDF

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Publication number
EP4036364B1
EP4036364B1 EP22153248.4A EP22153248A EP4036364B1 EP 4036364 B1 EP4036364 B1 EP 4036364B1 EP 22153248 A EP22153248 A EP 22153248A EP 4036364 B1 EP4036364 B1 EP 4036364B1
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EP
European Patent Office
Prior art keywords
slat
fold
blade
sides
roller shutter
Prior art date
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Application number
EP22153248.4A
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German (de)
French (fr)
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EP4036364A1 (en
Inventor
Arnaud Birker
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BHG
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BHG
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—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
    • 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
    • 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
    • E06B2009/1516—Means to increase resistance against bending
    • 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
    • E06B2009/1533—Slat connections
    • E06B2009/1538—Slats directly connected
    • E06B2009/1544—Engaging section has curved articulation surfaces

Definitions

  • the present invention relates to the field of concealment systems for window or door type openings made in the walls of buildings, said systems being more precisely rolling shutters with slats.
  • the invention relates more precisely to said blades, which are fixed to each other by articulated connections so as to constitute the apron of the rolling shutter.
  • the shutters are also manufactured in very variable dimensions, since they are supposed to be suitable for fitting small windows as well as large bay windows. In the latter case, the mechanical resistance of the blades, particularly bending, is an all the more important issue as they must remain light for reasons of maneuverability. They are, for example, made of aluminum or PVC, materials which have mechanical properties adapted to the use for which they are intended, combined with great lightness and very good recyclability.
  • the rolling shutter slats are also designed to play an acoustic role, so that the shutter improves the sound performance of the building, in terms of insulation, when it is deployed. They can thus be equipped with acoustically insulating materials, which are also selected to reinforce the mechanical resistance of the slats. But the question of the shutters' own noise also arises, the hollow slats acting as a resonance box and themselves being the source of noise when they hit the slides under the effect of the wind, or in the event of bad weather. rain or hail type.
  • rolling shutter slats comprising for example an outer casing of profiled aluminum strip with an inner core composed of foam, for example polyurethane.
  • foam for example polyurethane.
  • the main function of the foam is to maintain the aluminum walls at a substantially constant distance when the blade is subjected to a bending or compression force. If it were devoid of foam, a blade subjected to such an effort would see its exterior walls move closer together, causing a significant drop in the overall rigidity of the blade and its inertia.
  • foam being in itself a good acoustic insulator and therefore contributing to increasing the sound insulation ability of the shutter.
  • the present invention aims to remedy this insufficiency, without compromising the qualities and properties required for the blades, in terms of mechanical resistance as well as with regard to sound insulation.
  • the invention proposes a blade which has a sound efficiency of the same order as that of its predecessors, forming an acoustic screen of the same degree, with a structure which does not alter its mechanical qualities of resistance in particular to bending and to the compression.
  • the invention which conventionally relates to a rolling shutter blade with acoustic gain, articulated to at least one adjacent blade to constitute a rolling shutter apron capable of closing an opening made in a wall, each blade having long sides and short sides provided with means for attaching to at least one adjacent blade, said sides delimiting an interior volume of the blade, is such that at least one of the long sides is provided with at least one minus one longitudinal fold extending, inside the volume, towards the other long side, said longitudinal fold consists of a part folded back on itself and forming a double thickness.
  • the blades of the present invention present a configuration which only involves, inside the structure, the material of the blade envelope. It is a double simplification, at the level of the manufacturing process which frees itself from all the operations linked to the injection of separate material, as well as in the structure of each blade, now single-material and entirely recyclable.
  • the configuration of the invention therefore considerably simplifies recycling.
  • the longitudinal folds developing on the interior face of a long side towards the interior face of the opposite long side limit, like the injected foam of the prior art, the coming together of said sides and the subsequent weakening of the resistance of the blade to certain mechanical stresses such as bending or transverse compression.
  • the fold consists of a part folded on itself and forming a double thickness, in accordance with the definitions in force for a fold, which includes a notion of contact of the walls or sides next to the fold after folding.
  • the interior folds also have a real effect in the sense that they first modify the resonance box constituted by the interior volume of the blades.
  • the configuration of the invention provides real gain at the level of the resonance box.
  • the acoustic performance can also be further improved, depending on the structural configuration of the folds in the volume of the slats and the mechanical treatment that it is possible to subject them to, as will be seen in more detail below.
  • the free end of each fold can be in contact with the other long side, making any even limited rimpedement of the long sides impossible.
  • This is a mechanical optimization, thereby increasing the overall rigidity of the blades.
  • It is also a configuration which improves acoustic performance, the interior volume then being clearly delimited in smaller compartments, less likely to create resonance. The walls are less likely to vibrate, and friction between the end of the plies and the opposite long side is likely to dissipate acoustic energy, potentially leading to noise attenuation.
  • each ply is preferably pre-stressed, which contributes to optimizing the result in terms of acoustic insulation. Stressing the folds in the interior volume of the slats makes it possible to maintain acoustic performance despite the absence of foam. The pre-tension of the configuration also makes the blades less likely to vibrate.
  • each fold can comprise two sections with an orientation substantially perpendicular to the portion of the long side from which it comes, connected at a top of the fold in the vicinity or in contact with the other long side.
  • the profile of the envelope, at the level of the long side from which the fold starts, then has a right-angled fold which extends into an interior section, which returns on itself after the top in a second section connected to the long side to which belongs the fold by a fold of the same angle.
  • the two sides are joined together, which gives the fold greater rigidity and mechanical resistance.
  • the abutment of such compact folds on the long opposite sides constitutes a mechanical context favorable to the stressing mentioned above.
  • the blades are made of aluminum.
  • FIG. 1 represents a perspective view of a portion of a roller shutter blade according to the prior art, with polyurethane foam injected into the envelope of the blade;
  • FIG. 2 represents a perspective view of one embodiment of a blade according to the present invention, devoid of foam but provided with interior folds.
  • the blades 1 of rolling shutters comprise two long sides 2, 3 delimiting, with short sides 4, 5, an interior volume 6.
  • the path followed by a portion of apron made up of such blades 1 juxtaposed can be rectilinear, for example when it is opposite the opening to be closed, or curvilinear during winding aiming to “store” the rolling shutter in a box surmounting the opening, the juxtaposed blades 1 must be articulated between them.
  • the articulation allows a pivoting of amplitude which can be limited but must nevertheless be sufficient to allow the winding and unwinding of the apron in the shutter box, typically around a winding cylinder of a few centimeters in diameter.
  • the articulation of the blades 1 is carried out in practice along their short longitudinal sides 4, 5, at the levels of which each blade 1 is provided with hooking means which are different from one edge to the other but complementary. This complementarity allows the blades 1 to be assembled together in a juxtaposed position, capable of constituting the complete deck together.
  • the means of attachment between blades 1 are very generally and in principle in the form of hooks 7/housings 8 each configured to cooperate respectively with a housing 8/hook 7 on the short side 4, 5 of the adjacent blade 1.
  • the hooks 7 in principle equip one of the edges of a blade 1 and are able to attach in the housing 8 of the edge facing the adjacent blade 1.
  • the housings 8 are in the form of slides intended to receive, for example by nesting, the hook 7 of the adjacent blade 1.
  • the invention As far as the invention is concerned, it is the central part of the blades 1 delimited by the long sides 2, 3 and the short sides 4, 5 which is the object of the invention.
  • the interior volume 6 delimited by these sides 2 to 5 in aluminum strip is filled with solidified foam 9 of the polyurethane foam type which has the mechanical function of stiffening the blade 1, in particular making it possible to maintain the aluminum walls at a constant distance when the blade is subjected to a bending or compression force.
  • this injected foam 9 serves as sound insulation (it has little effect in thermal insulation, the short sides 4, 5 and the attachment means 7, 8 creating thermal bridges).
  • This solution technically satisfactory on these two levels respectively acoustically and mechanically, is not from the point of view of the recycling requirements which tend to be imposed everywhere.
  • the structure is different and no longer has interior foam, it is exclusively made of aluminum.
  • the structure of blade 1 of the figure 2 does not change with regard to the short sides 4, 5 or even the inter-slat fixing methods 1, which remain identical: a longitudinal hook 7 and a slide 8.
  • the modifications concern one of the long sides 3, which is provided with folds 10, 11 developing inside the volume 6, towards the second long side 2.
  • These folds 10, 11 give rise to, on the external face of the long side 3, longitudinal grooves which are shown parallel 12, 13 at the locations of the inward folds of the two sides respectively 101, 102 and 111, 112 forming the two folds 10 and 11.
  • the folds are not necessarily parallel, this is not a functional necessity.
  • the sections 101, 102 and 111, 112 respectively are joined together, oriented substantially perpendicular to the long side 3, and move towards the opposite long side 2, against which they rest at the level of the vertices 103, 113 of the folds 10, 11 in the version shown. We find the definition of the fold in the joining - therefore the contact - of the sections.
  • Folds 10, 11, in the structure illustrated in figure 2 that is to say involving contact with the large opposite side 2, are placed under stress, which results in increasing the rigidity of the blade 1 and also improving its performance acoustics.
  • this solution which partitions the interior volume 6 by prestressed interior partitions 10, 11 makes it possible to maintain the acoustic barrier previously obtained with the foam 9 (see in figure 1 ).
  • the inertia of the folds 10, 11 modifies the acoustic impedance of the blade 1, and makes it possible to dispense with the insulation properties of the polyurethane foam

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Building Environments (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Description

La présente invention a trait au domaine des systèmes d'occultation de baies de type fenêtre ou porte pratiquées dans des parois de bâtiments, lesdits systèmes étant plus précisément des volets roulants à lames. L'invention porte plus précisément sur lesdites lames, qui sont fixées les unes aux autres par des liaisons articulées de manière à constituer le tablier du volet roulant.The present invention relates to the field of concealment systems for window or door type openings made in the walls of buildings, said systems being more precisely rolling shutters with slats. The invention relates more precisely to said blades, which are fixed to each other by articulated connections so as to constitute the apron of the rolling shutter.

C'est ce tablier, lorsqu'il est déplacé par entraînement manuel ou automatique, qui gère le degré d'obturation de la baie puisqu'il peut être déroulé/enroulé, au gré de l'utilisateur, en vue d'une occultation plus ou moins complète de l'ouverture. Les lames qui le composent doivent assumer plusieurs fonctions, à commencer par des fonctions mécaniques visant à leur assurer une rigidité suffisante en fonctionnement. Elles peuvent en effet être soumises à des contraintes variées, pendant leurs déplacements combinés pour enrouler/dérouler les volets dans/hors de leur caisson de rangement, pendant l'assemblage des tabliers ou encore lorsqu'elles sont en prise avec des phénomènes météorologiques (vent) violents, contraintes qui justifient la nécessité de présenter une rigidité mécanique adaptée.It is this apron, when it is moved by manual or automatic drive, which manages the degree of shuttering of the opening since it can be unrolled/rolled up, at the user's discretion, for more concealment. or less complete opening. The blades that compose it must assume several functions, starting with mechanical functions aimed at ensuring sufficient rigidity in operation. They can in fact be subject to various constraints, during their combined movements to roll up/unroll the shutters in/out of their storage box, during the assembly of the aprons or even when they are in contact with weather phenomena (wind ) violent, constraints which justify the need to present suitable mechanical rigidity.

Les volets sont au surplus fabriqués en des dimensions très variables, puisqu'ils sont supposés être adaptés pour équiper des petites fenêtres aussi bien que des baies vitrées de grande taille. Dans ce dernier cas, la résistance mécanique des lames, notamment à la flexion, est un enjeu d'autant plus important qu'elles doivent rester légères pour des raisons de maniabilité. Elles sont d'ailleurs par exemple réalisées en aluminium, ou en PVC, matériaux qui possèdent des propriétés mécaniques adaptées à l'usage auquel elles sont destinées, combinées à une grande légèreté et à une très bonne recyclabilité.The shutters are also manufactured in very variable dimensions, since they are supposed to be suitable for fitting small windows as well as large bay windows. In the latter case, the mechanical resistance of the blades, particularly bending, is an all the more important issue as they must remain light for reasons of maneuverability. They are, for example, made of aluminum or PVC, materials which have mechanical properties adapted to the use for which they are intended, combined with great lightness and very good recyclability.

Les lames de volets roulants sont aussi conçues pour jouer un rôle acoustique, pour que le volet améliore les performances phoniques du bâtiment, en termes d'isolation, lorsqu'il est déployé. Elles peuvent ainsi être ainsi équipées de matières acoustiquement isolantes, que l'on sélectionne d'ailleurs pour renforcer la résistance mécanique des lames. Mais la question du bruit propre des volets se pose également, les lames creuses faisant caisse de résonnance et étant elles-mêmes à l'origine de bruits lorsqu'elles heurtent les coulisses sous l'effet du vent, ou en cas d'intempéries de type pluie ou grêle.The rolling shutter slats are also designed to play an acoustic role, so that the shutter improves the sound performance of the building, in terms of insulation, when it is deployed. They can thus be equipped with acoustically insulating materials, which are also selected to reinforce the mechanical resistance of the slats. But the question of the shutters' own noise also arises, the hollow slats acting as a resonance box and themselves being the source of noise when they hit the slides under the effect of the wind, or in the event of bad weather. rain or hail type.

Ainsi, il est connu d'équiper des lames de volet roulant comportant par exemple une enveloppe extérieure en feuillard d'aluminium profilé d'une âme intérieure composée de mousse, par exemple de polyuréthane. La fonction principale de la mousse est de maintenir les parois aluminium à une distance sensiblement constante lorsque la lame est soumise à un effort de flexion ou de compression. Si elle était dépourvue de mousse, une lame soumise à un tel effort verrait ses parois extérieures se rapprocher, provoquant une baisse importante de la rigidité globale de la lame et de son inertie. Un tel matériau améliore ensuite sensiblement les propriétés acoustiques du volet, la mousse étant en soi un bon isolant acoustique et contribuant dès lors à augmenter l'aptitude à l'isolation phonique du volet.Thus, it is known to equip rolling shutter slats comprising for example an outer casing of profiled aluminum strip with an inner core composed of foam, for example polyurethane. The main function of the foam is to maintain the aluminum walls at a substantially constant distance when the blade is subjected to a bending or compression force. If it were devoid of foam, a blade subjected to such an effort would see its exterior walls move closer together, causing a significant drop in the overall rigidity of the blade and its inertia. Such a material then significantly improves the acoustic properties of the shutter, the foam being in itself a good acoustic insulator and therefore contributing to increasing the sound insulation ability of the shutter.

Cette structure à enveloppe métallique externe et âme interne en mousse, adéquate et performante sur un plan fonctionnel, pose cependant problème sur un plan environnemental. L'usage de mousse polyuréthane isolante injectée dans les lames complexifie considérablement la recyclabilité de la lame, car il est en pratique très difficile de séparer la mousse de l'aluminium. De plus, la mousse de polyuréthanne n'est pas recyclable, on se contente de la brûler et de traiter dans la mesure du possible les fumées. Or, de nos jours, il est devenu indispensable de prévoir cet aspect sur les produits commercialisés ou à commercialiser, sous peine d'obérer leur futur sur des marchés qui, s'ils ne le sont pas déjà, seront bientôt règlementés à cet égard. Une lame de volet roulant selon le préambule de la revendication 1 est connue de EP0500059A2 .This structure with an external metal envelope and internal foam core, adequate and efficient on a functional level, however poses problems on an environmental level. The use of insulating polyurethane foam injected into the blades considerably complicates the recyclability of the blade, because it is in practice very difficult to separate the foam from the aluminum. In addition, polyurethane foam is not recyclable; we simply burn it and treat the fumes as much as possible. Nowadays, it has become essential to provide for this aspect on products marketed or to be marketed, under penalty of jeopardizing their future on markets which, if they are not already, will soon be regulated in this regard. A rolling shutter blade according to the preamble of claim 1 is known from EP0500059A2 .

La présente invention a pour objectif de remédier à cette insuffisance, sans porter atteinte aux qualités et propriétés requises pour les lames, en termes de résistance mécanique comme pour ce qui concerne l'isolation phonique. En bref, l'invention propose une lame qui présente une efficacité sonore du même ordre que celui de ses devancières, formant un écran acoustique de même degré, avec une structure qui n'altère pas ses qualités mécaniques de résistance notamment à la flexion et à la compression.The present invention aims to remedy this insufficiency, without compromising the qualities and properties required for the blades, in terms of mechanical resistance as well as with regard to sound insulation. In short, the invention proposes a blade which has a sound efficiency of the same order as that of its predecessors, forming an acoustic screen of the same degree, with a structure which does not alter its mechanical qualities of resistance in particular to bending and to the compression.

A cet effet, l'invention, qui concerne classiquement une lame de volet roulant à gain acoustique, articulée à au moins une lame adjacente pour constituer un tablier de volet roulant apte à obturer une ouverture pratiquée dans une paroi, chaque lame présentant des grands côtés et des petits côtés munis de moyens d'accrochage à au moins une lame adjacente, lesdits côtés délimitant un volume intérieur de la lame, est telle que l'un au moins des grands côtés est muni d'au moins un pli longitudinal s'étendant, à l'intérieur du volume, en direction de l'autre grand côté, ledit pli longitudinal consiste en une partie repliée sur elle-même et formant une double épaisseur.For this purpose, the invention, which conventionally relates to a rolling shutter blade with acoustic gain, articulated to at least one adjacent blade to constitute a rolling shutter apron capable of closing an opening made in a wall, each blade having long sides and short sides provided with means for attaching to at least one adjacent blade, said sides delimiting an interior volume of the blade, is such that at least one of the long sides is provided with at least one minus one longitudinal fold extending, inside the volume, towards the other long side, said longitudinal fold consists of a part folded back on itself and forming a double thickness.

Ainsi, au lieu d'une garniture intérieure en mousse plastique à extraire de la lame en fin de vie, mousse qui est d'ailleurs elle-même une source de pollution directe ou indirecte (via un procédé de recyclage), les lames de la présente invention présentent une configuration qui ne fait plus intervenir, à l'intérieur de la structure, que le matériau de l'enveloppe de la lame. C'est une double simplification, au niveau du process de fabrication qui s'affranchit de toutes les opérations liées à l'injection de matière distincte, autant que dans la structure de chaque lame, à présent mono-matière et entièrement recyclable. La configuration de l'invention simplifie dès lors considérablement le recyclage.Thus, instead of an interior lining made of plastic foam to be extracted from the blade at the end of its life, foam which is itself a source of direct or indirect pollution (via a recycling process), the blades of the present invention present a configuration which only involves, inside the structure, the material of the blade envelope. It is a double simplification, at the level of the manufacturing process which frees itself from all the operations linked to the injection of separate material, as well as in the structure of each blade, now single-material and entirely recyclable. The configuration of the invention therefore considerably simplifies recycling.

Structurellement, les plis longitudinaux se développant sur la face intérieure d'un grand côté en direction de la face intérieure du grand côté opposé limitent, comme la mousse injectée de l'art antérieur, le rapprochement desdits côtés et l'affaiblissement consécutif de la résistance de la lame à certaines contraintes mécaniques telles que la flexion ou la compression transversale. Il est à noter qu'au sens de l'invention, le pli consiste en une partie repliée sur elle-même et formant une double épaisseur, conformément aux définitions en vigueur pour un pli, ce qui inclut une notion de contact des parois ou pans en regard du pli après repli.Structurally, the longitudinal folds developing on the interior face of a long side towards the interior face of the opposite long side limit, like the injected foam of the prior art, the coming together of said sides and the subsequent weakening of the resistance of the blade to certain mechanical stresses such as bending or transverse compression. It should be noted that within the meaning of the invention, the fold consists of a part folded on itself and forming a double thickness, in accordance with the definitions in force for a fold, which includes a notion of contact of the walls or sides next to the fold after folding.

Sur un plan acoustique, les plis intérieurs ont également un réel effet en ce sens qu'ils modifient d'abord la caisse de résonnance constituée par le volume intérieur des lames. Acoustiquement, la configuration de l'invention procure un gain réel au niveau de la caisse de résonnance. La performance acoustique peut d'ailleurs encore être améliorée, selon la configuration structurelle des plis dans le volume des lames et le traitement mécanique qu'il est possible de leur faire subir, comme on le verra plus en détail dans la suite.Acoustically, the interior folds also have a real effect in the sense that they first modify the resonance box constituted by the interior volume of the blades. Acoustically, the configuration of the invention provides real gain at the level of the resonance box. The acoustic performance can also be further improved, depending on the structural configuration of the folds in the volume of the slats and the mechanical treatment that it is possible to subject them to, as will be seen in more detail below.

Ainsi, sur un plan structurel, l'extrémité libre de chaque pli peut être en contact avec l'autre grand côté, rendant impossible tout rapprochement même limité des grands côtés. C'est une optimisation mécanique, augmentant de fait la rigidité globale des lames. C'est également une configuration qui améliore les performances acoustiques, le volume intérieur étant alors clairement délimité en des compartiments plus petits, moins susceptibles de faire caisse de résonnance. Les parois sont moins susceptibles de vibrer, et les frottements entre l'extrémité des plis et le grand côté opposé sont susceptibles de dissiper de l'énergie acoustique, conduisant potentiellement à une atténuation du bruit.Thus, on a structural level, the free end of each fold can be in contact with the other long side, making any even limited rapprochement of the long sides impossible. This is a mechanical optimization, thereby increasing the overall rigidity of the blades. It is also a configuration which improves acoustic performance, the interior volume then being clearly delimited in smaller compartments, less likely to create resonance. The walls are less likely to vibrate, and friction between the end of the plies and the opposite long side is likely to dissipate acoustic energy, potentially leading to noise attenuation.

De plus, au titre du traitement mécanique, chaque pli est de préférence précontraint, ce qui contribue à optimiser le résultat en termes d'isolation acoustique. La mise sous contrainte des plis dans le volume intérieur des lames permet de conserver les performances acoustiques malgré l'absence de mousse. La précontrainte de la configuration rend par ailleurs les lames moins susceptibles de vibrer.In addition, as part of the mechanical treatment, each ply is preferably pre-stressed, which contributes to optimizing the result in terms of acoustic insulation. Stressing the folds in the interior volume of the slats makes it possible to maintain acoustic performance despite the absence of foam. The pre-tension of the configuration also makes the blades less likely to vibrate.

Selon une configuration possible, chaque pli peut comporter deux pans d'orientation sensiblement perpendiculaire à la portion de grand côté dont il est issu, reliés en un sommet du pli au voisinage ou au contact de l'autre grand côté. Le profilé de l'enveloppe, au niveau du grand côté duquel part le pli, comporte alors une pliure à angle droit qui se prolonge en un pan intérieur, lequel revient sur lui-même après le sommet en un second pan relié au grand côté auquel appartient le pli par une pliure du même angle.According to a possible configuration, each fold can comprise two sections with an orientation substantially perpendicular to the portion of the long side from which it comes, connected at a top of the fold in the vicinity or in contact with the other long side. The profile of the envelope, at the level of the long side from which the fold starts, then has a right-angled fold which extends into an interior section, which returns on itself after the top in a second section connected to the long side to which belongs the fold by a fold of the same angle.

De préférence, les deux pans sont accolés, ce qui confère au pli une rigidité et une résistance mécanique plus importantes. L'aboutement de tels plis compacts aux grands côtés opposés constitue un contexte mécanique favorable à la mise en contrainte mentionnée auparavant.Preferably, the two sides are joined together, which gives the fold greater rigidity and mechanical resistance. The abutment of such compact folds on the long opposite sides constitutes a mechanical context favorable to the stressing mentioned above.

De préférence encore, dans les configurations précédentes, les lames sont en aluminium.More preferably, in the previous configurations, the blades are made of aluminum.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre, qui se rapporte à des modes de réalisation qui ne sont donnés qu'à titre d'exemples indicatifs et non limitatifs.Other aims and advantages of the present invention will become apparent during the description which follows, which relates to embodiments which are given only by way of indicative and non-limiting examples.

La compréhension de cette description sera au surplus facilitée en se référant aux dessins joints en annexe et dans lesquels :The understanding of this description will also be made easier by referring to the drawings attached in the appendix and in which:

La figure 1 représente une vue en perspective d'une portion de lame de volet roulant selon l'art antérieur, avec de la mousse de polyuréthane injectée dans l'enveloppe de la lame ; etThere figure 1 represents a perspective view of a portion of a roller shutter blade according to the prior art, with polyurethane foam injected into the envelope of the blade; And

La figure 2 représente une vue en perspective d'un mode de réalisation d'une lame selon la présente invention, dépourvue de mousse mais munie de plis intérieur.There figure 2 represents a perspective view of one embodiment of a blade according to the present invention, devoid of foam but provided with interior folds.

En référence à la figure 1, les lames 1 de volets roulants selon l'invention, comportent deux grands côtés 2, 3 délimitant, avec des petits côtés 4, 5, un volume intérieur 6. Etant donné que le trajet suivi par une portion de tablier constitué de telles lames 1 juxtaposées peut être rectiligne, par exemple lorsqu'il est en face de l'ouverture à obturer, ou curviligne lors de l'enroulement visant à « stocker » le volet roulant dans un caisson surmontant l'ouverture, les lames 1 juxtaposées doivent être articulées entre elles. L'articulation autorise un pivotement d'amplitude qui peut être limitée mais doit cependant être suffisante pour permettre l'enroulement et le déroulement du tablier dans le caisson du volet, typiquement autour d'un cylindre d'enroulement de quelques centimètres de diamètre.In reference to the figure 1 , the blades 1 of rolling shutters according to the invention, comprise two long sides 2, 3 delimiting, with short sides 4, 5, an interior volume 6. Given that the path followed by a portion of apron made up of such blades 1 juxtaposed can be rectilinear, for example when it is opposite the opening to be closed, or curvilinear during winding aiming to “store” the rolling shutter in a box surmounting the opening, the juxtaposed blades 1 must be articulated between them. The articulation allows a pivoting of amplitude which can be limited but must nevertheless be sufficient to allow the winding and unwinding of the apron in the shutter box, typically around a winding cylinder of a few centimeters in diameter.

L'articulation des lames 1 s'effectue en pratique le long de leurs petits côtés longitudinaux 4, 5, aux niveaux desquels chaque lame 1 est dotée de moyens d'accrochage qui sont différents d'un bord à l'autre mais complémentaires. Cette complémentarité permet l'assemblage des lames 1 entre elles dans une position juxtaposée, apte à constituer ensemble le tablier complet. Les moyens d'accrochage entre lames 1 se présentent très généralement et dans le principe sous la forme de crochets 7/logements 8 configurés pour coopérer chacun respectivement avec un logement 8/crochet 7 du petit côté 4, 5 de la lame 1 adjacente.The articulation of the blades 1 is carried out in practice along their short longitudinal sides 4, 5, at the levels of which each blade 1 is provided with hooking means which are different from one edge to the other but complementary. This complementarity allows the blades 1 to be assembled together in a juxtaposed position, capable of constituting the complete deck together. The means of attachment between blades 1 are very generally and in principle in the form of hooks 7/housings 8 each configured to cooperate respectively with a housing 8/hook 7 on the short side 4, 5 of the adjacent blade 1.

Plus spécifiquement, les crochets 7 équipent en principe l'un des bords d'une lame 1 et sont aptes à s'attacher dans le logement 8 du bord en regard de la lame 1 adjacente. Les logements 8 se présentent sous forme de glissières destinées à recevoir, par exemple par emboîtement, le crochet 7 de la lame 1 adjacente. Ainsi et successivement, dans toutes les configurations, une lame n reçoit au sein de sa glissière 8 le crochet 7 située le long d'un petit côté 4 d'une lame n-1, tandis que son crochet 7 coopère avec la glissière 8 située du petit côté opposé 5 d'une lame n+1.More specifically, the hooks 7 in principle equip one of the edges of a blade 1 and are able to attach in the housing 8 of the edge facing the adjacent blade 1. The housings 8 are in the form of slides intended to receive, for example by nesting, the hook 7 of the adjacent blade 1. Thus and successively, in all configurations, a blade n receives within its slide 8 the hook 7 located along a short side 4 of a blade n-1, while its hook 7 cooperates with the slide 8 located on the short opposite side 5 of a blade n+1.

Pour ce qui concerne l'invention, c'est la partie centrale des lames 1 délimitée par les grands côtés 2, 3 et les petits côtés 4, 5 qui est l'objet de l'invention. Dans la figure 1, le volume intérieur 6 délimité par ces côtés 2 à 5 en feuillard aluminium est rempli de mousse solidifiée 9 de type mousse de polyuréthane qui a pour fonction mécanique de rigidifier la lame 1, en permettant notamment de maintenir les parois aluminium à une distance constante lorsque la lame est soumise à un effort de flexion ou de compression. Secondairement, comme évoqué, cette mousse injectée 9 sert d'isolant phonique (elle n'a guère d'effet dans l'isolation thermique, les petits côtés 4, 5 et les moyens d'accrochage 7, 8 réalisant des ponts thermiques). Cette solution, techniquement satisfaisante sur ces deux plans respectivement acoustique et mécanique, ne l'est pas du point de vue des exigences de recyclages qui tendent à s'imposer partout.As far as the invention is concerned, it is the central part of the blades 1 delimited by the long sides 2, 3 and the short sides 4, 5 which is the object of the invention. In there figure 1 , the interior volume 6 delimited by these sides 2 to 5 in aluminum strip is filled with solidified foam 9 of the polyurethane foam type which has the mechanical function of stiffening the blade 1, in particular making it possible to maintain the aluminum walls at a constant distance when the blade is subjected to a bending or compression force. Secondarily, as mentioned, this injected foam 9 serves as sound insulation (it has little effect in thermal insulation, the short sides 4, 5 and the attachment means 7, 8 creating thermal bridges). This solution, technically satisfactory on these two levels respectively acoustically and mechanically, is not from the point of view of the recycling requirements which tend to be imposed everywhere.

Selon l'invention, visible en figure 2, la structure est différente et ne comporte plus de mousse intérieure, elle est exclusivement en aluminium. En réalité, la structure de la lame 1 de la figure 2 ne change pas pour ce qui concerne les petits côtés 4, 5 ou encore les modes de fixation inter-lames 1, qui restent identiques : un crochet longitudinal 7 et une glissière 8. C'est un avantage supplémentaire de l'invention, dans la mesure où les nouvelles lames 1 sont parfaitement compatibles avec ce qui existe déjà, permettant des opérations de maintenance sans obligation de garder des stocks d'anciens produits.According to the invention, visible in figure 2 , the structure is different and no longer has interior foam, it is exclusively made of aluminum. In reality, the structure of blade 1 of the figure 2 does not change with regard to the short sides 4, 5 or even the inter-slat fixing methods 1, which remain identical: a longitudinal hook 7 and a slide 8. This is an additional advantage of the invention, in the to the extent that the new blades 1 are perfectly compatible with what already exists, allowing maintenance operations without the obligation to keep stocks of old products.

Les modifications concernent dans l'exemple représenté l'un des grands côtés 3, qui est muni de plis 10, 11 se développant à l'intérieur du volume 6, en direction du second grand côté 2. Ces plis 10, 11 font naître, sur la face externe du grand côté 3, des rainures longitudinales qui sont représentées parallèles 12, 13 aux endroits des pliages vers l'intérieur des deux pans respectivement 101, 102 et 111, 112 formant les deux plis 10 et 11. Au-delà de l'exemple représenté, les plis ne sont pas forcément parallèles, il ne s'agit pas d'une nécessité fonctionnelle. Les pans respectivement 101, 102 et 111, 112 sont accolés, orientés sensiblement perpendiculairement au grand côté 3, et se dirigent vers le grand côté 2 opposé, contre lequel ils s'appuient au niveau des sommets 103, 113 des plis 10, 11 dans la version représentée. On retrouve la définition du pli dans l'accolement - donc le contact - des pans.In the example shown, the modifications concern one of the long sides 3, which is provided with folds 10, 11 developing inside the volume 6, towards the second long side 2. These folds 10, 11 give rise to, on the external face of the long side 3, longitudinal grooves which are shown parallel 12, 13 at the locations of the inward folds of the two sides respectively 101, 102 and 111, 112 forming the two folds 10 and 11. Beyond the example shown, the folds are not necessarily parallel, this is not a functional necessity. The sections 101, 102 and 111, 112 respectively are joined together, oriented substantially perpendicular to the long side 3, and move towards the opposite long side 2, against which they rest at the level of the vertices 103, 113 of the folds 10, 11 in the version shown. We find the definition of the fold in the joining - therefore the contact - of the sections.

Les plis 10, 11, dans la structure illustrée en figure 2, c'est-à-dire impliquant contact avec le grand côté opposé 2, sont mis en contrainte, ce qui aboutit à augmenter la rigidité de la lame 1 et aussi à améliorer ses performances acoustiques. En fait, cette solution qui partitionne le volume intérieur 6 par des cloisons intérieures 10, 11 en précontrainte permet de conserver la barrière acoustique auparavant obtenue avec la mousse 9 (voir en figure 1). L'inertie des plis 10, 11 modifie l'impédance acoustique de la lame 1, et permet de se passer des propriétés d'isolation de la mousse polyuréthaneFolds 10, 11, in the structure illustrated in figure 2 , that is to say involving contact with the large opposite side 2, are placed under stress, which results in increasing the rigidity of the blade 1 and also improving its performance acoustics. In fact, this solution which partitions the interior volume 6 by prestressed interior partitions 10, 11 makes it possible to maintain the acoustic barrier previously obtained with the foam 9 (see in figure 1 ). The inertia of the folds 10, 11 modifies the acoustic impedance of the blade 1, and makes it possible to dispense with the insulation properties of the polyurethane foam

La solution de l'invention telle que représentée en figure 2 n'est pas exhaustive de l'invention, qui englobe des variantes de forme et de structure par exemple concernant la forme des plis, voire leur orientation, dès lors qu'une mise en contrainte peut être effectuée. Il est à noter aussi que les modalités de mise en oeuvre de l'invention telles que représentées ne montrent que des plis appartenant à un même grand côté. Rien n'interdit pourtant de mettre en oeuvre une variante dotée de plis issus des deux grand côtés 2, 3, qui s'interpénètrent.The solution of the invention as represented in figure 2 is not exhaustive of the invention, which includes variants of shape and structure for example concerning the shape of the folds, or even their orientation, since stressing can be carried out. It should also be noted that the methods of implementing the invention as represented only show folds belonging to the same long side. However, nothing prevents the implementation of a variant with folds coming from the two long sides 2, 3, which interpenetrate.

Claims (6)

  1. An acoustic roller shutter slat (1), articulated to at least one adjacent slat (1) to constitute a roller shutter apron capable of closing an opening made in a wall, each slat (1) having large sides (2, 3) and small sides (4, 5) provided with fastening means (7, 8) for fastening to at least one adjacent slat (1), said sides (2, 3, 4, 5) delimiting an inner volume (6) of the slat (1), characterized in that at least one of the large sides (2, 3) is provided with at least one longitudinal fold (10, 11) extending, inside the volume (6), towards the other large side (3, 2), said longitudinal fold (10, 11) consists of a part folded back on itself and forming a double thickness.
  2. The roller shutter slat (1) according to the preceding claim,
    characterized in that the free end of each fold (10, 11) is in contact with the other large side (3, 2).
  3. The roller shutter slat (1) according to one of the preceding claims,
    characterized in that each fold (10, 11) is prestressed.
  4. The roller shutter slat (1) according to one of the preceding claims,
    characterized in that each fold (10, 11) comprises two faces (101, 102 ; 111, 112) with an orientation substantially perpendicular to the large-side portion (2, 3) from which it is derived, connected at an apex (103, 113) of the fold in the vicinity or in contact with the other large side (3, 2).
  5. The roller shutter slat (1) according to the preceding claim,
    characterized in that the two faces (101, 102 ; 111, 112) are joined.
  6. The roller shutter slat (1) according to one of the preceding claims,
    characterized in that it is made of aluminum.
EP22153248.4A 2021-01-29 2022-01-25 Slat for a roller blind Active EP4036364B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2100887A FR3119414B1 (en) 2021-01-29 2021-01-29 Rolling shutter blade

Publications (2)

Publication Number Publication Date
EP4036364A1 EP4036364A1 (en) 2022-08-03
EP4036364B1 true EP4036364B1 (en) 2024-02-28

Family

ID=75690409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22153248.4A Active EP4036364B1 (en) 2021-01-29 2022-01-25 Slat for a roller blind

Country Status (3)

Country Link
EP (1) EP4036364B1 (en)
FR (1) FR3119414B1 (en)
PL (1) PL4036364T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1509533A1 (en) * 1963-07-25 1969-07-31 Willy Kirschbaum Shutters
JP2541394Y2 (en) * 1991-02-18 1997-07-16 昭和オリファ株式会社 Thermal insulation shutter device
US5419386A (en) * 1994-03-07 1995-05-30 Magro; Sebastian Insulated roll-up door provided with metal outer and inner walls

Also Published As

Publication number Publication date
PL4036364T3 (en) 2024-05-20
EP4036364A1 (en) 2022-08-03
FR3119414B1 (en) 2023-12-15
FR3119414A1 (en) 2022-08-05

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