EP0326487B1 - Frame for tensioning a canvas - Google Patents
Frame for tensioning a canvas Download PDFInfo
- Publication number
- EP0326487B1 EP0326487B1 EP89400213A EP89400213A EP0326487B1 EP 0326487 B1 EP0326487 B1 EP 0326487B1 EP 89400213 A EP89400213 A EP 89400213A EP 89400213 A EP89400213 A EP 89400213A EP 0326487 B1 EP0326487 B1 EP 0326487B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groove
- chassis
- section
- tensioning device
- chassis according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004744 fabric Substances 0.000 claims description 33
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims 2
- 238000000465 moulding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
- B44D3/18—Boards or sheets with surfaces prepared for painting or drawing pictures; Stretching frames for canvases
- B44D3/185—Stretching frames for canvases
Definitions
- the present invention relates to a frame for a painter's canvas, or other fabrics.
- One of the main problems encountered in the production of frames for painter's canvas is to allow the fixing of a canvas under a tension as uniformly distributed as possible.
- FR-A-2 505 020 describes a frame (or frame) made up of several sections along a rectangular contour, the sections comprising at least one U-shaped groove along one of their edges.
- a canvas is arranged on the frame, the edge of which is received in the grooves, and thick blades are forcefully engaged in the grooves.
- the frames are made of wood and the canvas is fixed under tension and maintained by gluing or nailing.
- these are delicate or time-consuming techniques.
- it is extremely difficult, if not impossible, to detach the canvas from the chassis in order to fix it on another chassis if this proves necessary.
- the present invention relates to a chassis made up of several sections assembled according to a selected polygonal contour, said sections being formed by profiles having at least one longitudinal groove along one of their peripheral edges, said groove being susceptible to receive an edge of a fabric arranged on said chassis, and a tensioning device of elongated shape, extending over the entire perimeter of the chassis, and held in force in said groove, characterized in that the walls of the peripheral edge of the profiled delimiting said groove have end portions defining a narrowed mouth for said groove and in that the tensioning device consists of an elongated rod comprising a flat base intended to come to bear against the end portions outside of the groove and of which the width is greater than that of the narrowed mouth and two parallel wings projecting from said flat base and having on their opposite faces beads intended to snap into said mouth.
- the flat base of the rod has two ribs extending on the same side as the wings and outside of them, intended to come to bear against the end portions of the walls of said groove.
- the chassis comprises a removable covering frame of C-shaped section with two slightly converging branches, fitted around the profile, and comprising on one side a covering lip projecting towards the interior of the chassis, in order to hide the tensioning rod as well as the margins of the fabric.
- the two branches of the profile terminate in two re-entrant claws which engage between the edges of the flat base of the strip and the profile, beyond the ribs.
- the present invention also relates to a frame made up of several sections assembled according to a selected polygonal contour, said sections being formed by profiles having at least one longitudinal groove along one of their edges, said groove being capable of receiving a border of a fabric disposed on said chassis, and a tensioning device of elongated shape, extending over the entire perimeter of the chassis, and held in force in said groove, characterized in that said groove has a narrowed mouth and the tensioning device consists in a resiliently deformable loop band, of width substantially equal to that of the groove.
- the tensioning device consists of an elongate elastic seal with a section substantially complementary to that of the groove.
- the installation steps are particularly simple and do not require any tools or special knack.
- the canvas can be detached from the frame just as easily.
- the groove has a U-shaped or V-shaped section and the tensioning device consists of a single band in closed loop, forcibly engaged in the groove, either by its own elasticity, or by means a tensioner.
- the profile will have two parallel grooves, which will allow to stretch two fabrics on the frame, one on the front, the other on the back.
- the profile can be shaped, on the side of the inner edge of the chassis, in the form of a rail, as taught in patent application FR 86 11261, which will allow a multiplicity of sliders to be received. and arrange any canvas around with a zig-zag cord.
- a covering profile with a C-shaped section can be fitted around the entire periphery of the fabric on the chassis.
- Each chassis section consists of a hollow section defining an internal rail 16 opening out through a slot 18 on the internal edge of the chassis.
- the profile On its face opposite to the slot 18, that is to say on the outer edge of the chassis, the profile has two grooves 20, 22 of substantially semi-circular section and opening out through a narrowed mouth 24. The grooves extend over the entire length of the sections of the profile.
- the chassis also comprises a tensioning device in the form of an elongated elastic seal 26 of section substantially complementary to that of the groove 20, 22, therefore in this embodiment, a circular section as illustrated in FIG. 1.
- the fabric border is also forced into penetration in the groove, which has the effect of fixing the canvas on the frame under a uniformly distributed tension, once the seal has been introduced into the grooves of all the sections of the profile.
- the seal can be in one piece and cover the entire perimeter of the chassis, or even be formed of a succession of sections of the same length as the sections of sections.
- the canvas 28 can consist of a painter's canvas, without it being a limiting application. It may consist of a decorative canvas or not, of textile material, or any other flexible sheet material.
- the periphery of the chassis can be garnished with a covering profile 32 with a C or L-shaped section, simply fitted around the sections of profiles of the chassis.
- FIG. 3 the use of the chassis has been briefly illustrated according to the teachings of application FR 86 11261.
- a number of sliders 40 are arranged in the internal part forming a rail 16. These sliders end, outside of the slot 18, by eyelets 42 which are used for the establishment of a tensioning cord 44 arranged in a zig-zag between the eyelets 46 of the fabric 48 and the eyelets 42 of the slides.
- the grooves 20 and 22 of the profile are unused and it is also possible to provide a covering frame 32 in order to hide the sections of the chassis and the slides.
- FIG. 4 a connecting piece, or a square 50, is illustrated, allowing the connection between two consecutive sections of profile 10 and 12.
- the bracket 50 has two wings 52 and 54 which fit inside the hollow sections and which carry two screws 56, 58 for holding. When the two sections are fitted onto the bracket 50, the screws 56, 58 are tightened through the slot 18 and the screws maintain the profiles by bracing at the bottom of the internal cavity of the profiles.
- angle separating the wings of the bracket 50 may be different from 90 ° as illustrated and we could provide a series of brackets having wings separated by different angles in order to create frames having virtually any polygonal shape.
- the tensioning device can consist of a loop band as in the previous case, or a joint of the type described in relation to the other embodiments and forming a closed loop.
- the groove may be provided along the profile edge corresponding to one of the faces of the frame, as illustrated in FIG. 6.
- the profile used to form the chassis has a section of the type of that illustrated in FIG. 5.
- the central part 11 of the profile 10 forms a hollow rectangle and from two adjacent vertices project two walls 60, 62 which together define a groove 20, of trapezoidal section.
- the two walls have an initial part (60a, 62a) slightly inclined towards the outside, along the inclined edges of the trapezoid, and a terminal part (60b, 62b) extending inwards along the large base of the trapezoid, the narrowed mouth 24 of the groove 20 being defined between the ends of the end parts (60b, 62b) of the two walls 60, 62.
- the profile 10 is preferably made of metal, advantageously aluminum.
- the tensioning device 26 consists of an elongated strip 64 comprising a flat base 66, of width greater than that of the narrowed mouth and two parallel wings 68, 70 projecting under the flat base 66.
- the two wings 68, 70 have on their opposite faces of the beads 72, 74 or hooking claws which snap under the ends of the walls of the profile 10 by elastic deformation of the two wings, by trapping the fabric 28 stretched on the frame.
- This embodiment makes it possible to use fabrics 28 of different thicknesses while ensuring correct tension, thanks to the elasticity of the wings 68, 70 of the strip 64.
- the profile sections 10 are assembled so that the groove 20 is disposed on the outer edge of the chassis.
- the fabric 28 is placed on the chassis, the edge of the fabric falling along the outer edges facing the mouth 24 of the grooves 20.
- the rods 64 are then forced into the grooves 20, driving the edges of the canvas , until the beads 72, 74 snap under the ends (60b, 62b) of the walls of the profile which define the narrowed mouth 24 of the groove 20.
- the tensioning rod 64 locally traps three layers of fabric, which is facilitated by the configuration of the rod.
- the fabric 28 is supported along the extreme periphery of the chassis, substantially on an edge 76, which avoids the problems of paint burrs between the fabric 28 and the frame 10.
- the flat base 66 of the rod has two ribs 78, 80 on the same side as the wings 68, 70 and outside of them, intended to come into abutment against the end portions 60b, 62b , of the walls of the groove 20.
- the covering frame 32 of the chassis consists of a C-shaped profile 82 with two branches 84, 86 slightly converging, fitted around the frame profile 10, and having on one side a covering lip 88 projecting towards the inside of the frame, in order to hide the tensioning rod 64 as well as the margins of the fabric 28.
- the covering frame 32 is practically independent of the chassis which can deform freely, while the oblique cuts at the corners of the covering frame can remain perfectly contiguous in all circumstances.
- the profile 82 of the covering frame is held on the edges of the tensioning strips 64.
- the two branches 84, 86 of the profile terminate in two re-entrant claws 90, 72 which engage between the edges of the flat base 66 of the strip and the chassis profile, beyond the ribs 78, 80 .
- the invention is not limited to a frame in which the profiles are provided with a groove and the tensioning device is received in the groove, but also covers a frame in which the profiles are provided with a projecting rib and the tensioning device has a groove which covers this rib.
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- Treatment Of Fiber Materials (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Connection Of Plates (AREA)
- Wing Frames And Configurations (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
La présente invention concerne un châssis pour toile de peintre, ou autres toiles.The present invention relates to a frame for a painter's canvas, or other fabrics.
L'un des principaux problèmes rencontrés dans la réalisation de châssis pour toiles de peintre est de permettre la fixation d'une toile sous une tension aussi uniformément répartie que possible.One of the main problems encountered in the production of frames for painter's canvas is to allow the fixing of a canvas under a tension as uniformly distributed as possible.
Le FR-A-2 505 020 décrit un châssis (ou cadre) constitué de plusieurs profilés suivant un contour rectangulaire, les profilés comportant au moins une rainure en U le long d'un de leurs bords. Une toile est disposée sur le châssis, dont la bordure est reçue dans les rainures, et des lames épaisses sont engagées en force dans les rainures.FR-A-2 505 020 describes a frame (or frame) made up of several sections along a rectangular contour, the sections comprising at least one U-shaped groove along one of their edges. A canvas is arranged on the frame, the edge of which is received in the grooves, and thick blades are forcefully engaged in the grooves.
Ces lames sont maintenues en place par arc-boutement contre les parois de la rainure. Leur largeur au repos est telle qu'une fois placées dans les rainures, elles dépassent du bord supérieur des rainures. Par suite la résultante des forces de tension de la toile aura tendance à les faire sortir complètement des rainures.These blades are held in place by bracing against the walls of the groove. Their width at rest is such that once placed in the grooves, they protrude from the upper edge of the grooves. Consequently, the result of the tension forces of the fabric will tend to cause them to come completely out of the grooves.
Traditionnellement, les châssis sont réalisés en bois et la toile est fixée sous tension et maintenue par collage ou par cloutage. Il s'agit là cependant de techniques délicates ou longues à mettre en oeuvre. Par ailleurs, il est extrêmement difficile, voire impossible, de détacher la toile du châssis afin de la fixer sur un autre châssis si celà s'avère nécessaire.Traditionally, the frames are made of wood and the canvas is fixed under tension and maintained by gluing or nailing. However, these are delicate or time-consuming techniques. Furthermore, it is extremely difficult, if not impossible, to detach the canvas from the chassis in order to fix it on another chassis if this proves necessary.
Il est également pratiquement impossible de démonter le châssis, ce qui est parfois nécessaire pour des châssis de grande taille.It is also practically impossible to dismantle the chassis, which is sometimes necessary for large chassis.
Afin de pallier ces inconvénients, la présente invention concerne un châssis constitué de plusieurs tronçons assemblés suivant un contour polygonal choisi, lesdits tronçons étant constitués par des profilés présentant au moins une rainure longitudinale le long d'un de leurs bords périphériques, ladite rainure étant susceptible de recevoir une bordure d'une toile disposée sur ledit châssis, et un dispositif de tensionnement de forme allongée, s'étendant sur tout le périmètre du châssis, et maintenu en force dans ladite rainure, caractérisé en ce que les parois du bord périphérique du profilé délimitant ladite rainure comportent des parties terminales définissant une embouchure rétrécie pour ladite rainure et en ce que le dispositif de tensionnement consiste en une baguette allongée comprenant une base plane destinée à venir en appui contre les parties terminales à l'extérieur de la rainure et dont la largeur est supérieure à celle de l'embouchure rétrécie et deux ailes parallèles en saillie de ladite base plane et présentant sur leurs faces opposées des bourrelets destinés à venir s'encliqueter dans ladite embouchure.In order to overcome these drawbacks, the present invention relates to a chassis made up of several sections assembled according to a selected polygonal contour, said sections being formed by profiles having at least one longitudinal groove along one of their peripheral edges, said groove being susceptible to receive an edge of a fabric arranged on said chassis, and a tensioning device of elongated shape, extending over the entire perimeter of the chassis, and held in force in said groove, characterized in that the walls of the peripheral edge of the profiled delimiting said groove have end portions defining a narrowed mouth for said groove and in that the tensioning device consists of an elongated rod comprising a flat base intended to come to bear against the end portions outside of the groove and of which the width is greater than that of the narrowed mouth and two parallel wings projecting from said flat base and having on their opposite faces beads intended to snap into said mouth.
Ainsi, grâce à l'invention, il est possible de fixer simplement une toile sur un châssis, en disposant tout d'abord la toile sur le châssis jusqu'à recouvrir la rainure des profilés, puis en forçant le dispositif de tensionnement en pénétration dans la rainure à embouchure rétrécie des profilés, la toile étant de ce fait également forcée en pénétration dans cette rainure par le dispositif de tensionnement, ce qui entraîne une mise sous tension uniformément répartie de la toile sur toute sa périphérie.Thus, thanks to the invention, it is possible to simply fix a fabric on a frame, by first placing the fabric on the frame until covering the groove of the profiles, then by forcing the tensioning device into penetration into the groove with narrowed mouth of the profiles, the fabric being therefore also forced into penetration into this groove by the tensioning device, which results in a uniformly distributed tensioning of the fabric over its entire periphery.
Selon un mode de réalisation particulier, la base plane de la baguette comporte deux nervures s'étendant du même côté que les ailes et à l'extérieur de celles-ci, destinées à venir en appui contre les parties terminales des parois de ladite rainure.According to a particular embodiment, the flat base of the rod has two ribs extending on the same side as the wings and outside of them, intended to come to bear against the end portions of the walls of said groove.
Selon une caractéristique avantageuse, le châssis comprend un cadre d'habillage amovible de section en forme de C à deux branches légèrement convergentes, emboîté autour du profilé, et comportant sur un côté une lèvre de recouvrement se projetant vers l'intérieur du châssis, afin de masquer la baguette de tensionnement ainsi que des marges de la toile.According to an advantageous characteristic, the chassis comprises a removable covering frame of C-shaped section with two slightly converging branches, fitted around the profile, and comprising on one side a covering lip projecting towards the interior of the chassis, in order to hide the tensioning rod as well as the margins of the fabric.
Selon une autre caractéristique, les deux branches du profilé se terminent par deux griffes rentrantes qui viennent s'engager entre les bordures de la base plane de la baguette et le profilé, au-delà des nervures.According to another characteristic, the two branches of the profile terminate in two re-entrant claws which engage between the edges of the flat base of the strip and the profile, beyond the ribs.
La présente invention concerne également un châssis constitué de plusieurs tronçons assemblés suivant un contour polygonal choisi, lesdits tronçons étant constitués par des profilés présentant au moins une rainure longitudinale le long d'un de leurs bords, ladite rainure étant susceptible de recevoir une bordure d'une toile disposée sur ledit châssis, et un dispositif de tensionnement de forme allongée, s'étendant sur tout le périmètre du châssis, et maintenu en force dans ladite rainure, caractérisé en ce que ladite rainure présente une embouchure rétrécie et le dispositif de tensionnement consiste en une bande en boucle déformable, de façon élastique, de largeur sensiblement égale à celle de la rainure.The present invention also relates to a frame made up of several sections assembled according to a selected polygonal contour, said sections being formed by profiles having at least one longitudinal groove along one of their edges, said groove being capable of receiving a border of a fabric disposed on said chassis, and a tensioning device of elongated shape, extending over the entire perimeter of the chassis, and held in force in said groove, characterized in that said groove has a narrowed mouth and the tensioning device consists in a resiliently deformable loop band, of width substantially equal to that of the groove.
Selon un mode de réalisation particulier le dispositif de tensionnement consiste en un joint élastique longiligne de section sensiblement complémentaire à celle de la rainure.According to a particular embodiment, the tensioning device consists of an elongate elastic seal with a section substantially complementary to that of the groove.
Les étapes de mise en place sont particulièrement simples et ne nécessitent ni outillage ni tour de main particulier. De plus, la toile peut être détachée du châssis tout aussi simplement.The installation steps are particularly simple and do not require any tools or special knack. In addition, the canvas can be detached from the frame just as easily.
Selon un autre mode de réalisation, le rainure a une section en forme de U ou de V et le dispositif de tensionnement consiste en une bande unique en boucle fermée, engagée en force dans la rainure, soit grâce à sa propre élasticité, soit au moyen d'un tendeur.According to another embodiment, the groove has a U-shaped or V-shaped section and the tensioning device consists of a single band in closed loop, forcibly engaged in the groove, either by its own elasticity, or by means a tensioner.
Avantageusement, le profilé comportera deux rainures parallèles, ce qui permettra de tendre deux toiles sur le châssis, l'une eu recto, l'autre eu verso. Enfin, à titre d'option, le profilé pourra être conformé, du côté de le tranche intérieure du châssis, sous forme d'un rail, comme enseigné dans la demande de brevet FR 86 11261, ce qui permettra de recevoir une multiplicité de coulisseaux et de disposer une toile de contour quelconque à l'aide d'une cordelette en zig-zag.Advantageously, the profile will have two parallel grooves, which will allow to stretch two fabrics on the frame, one on the front, the other on the back. Finally, as an option, the profile can be shaped, on the side of the inner edge of the chassis, in the form of a rail, as taught in
Enfin, un profilé d'habillage à section en forme de C pourra être emboîté sur tout le pourtour de la toile sur le châssis.Finally, a covering profile with a C-shaped section can be fitted around the entire periphery of the fabric on the chassis.
L'invention sera maintenant décrite en se référant aux dessins annexés, dans lequels :
- les figures 1 et 2 sont des vues en coupe transversale d'un châssis conforme à l'invention, équipé d'une ou de deux toiles, respectivement avant et après mise en place de la toile ;
- la figure 3 est une vue en coupe partielle du même châssis, équipé de coulisseaux pour mise en place d'une toile conformément à la
demande FR 86 11261; - la figure 4 est une vue de détail éclatée du raccordement de deux profilés du châssis ; et
- les figures 5 et 6 sont des vues en coupe de profilés constituant d'autres variantes de l'invention, et
- les figures 7 et 8 illustrent des variantes analogues à celle de la figure 5.
- Figures 1 and 2 are sectional views transverse of a frame according to the invention, equipped with one or two fabrics, respectively before and after fitting of the fabric;
- Figure 3 is a partial sectional view of the same frame, equipped with slides for setting up a fabric in accordance with the
request FR 86 11261; - Figure 4 is an exploded detail view of the connection of two sections of the chassis; and
- FIGS. 5 and 6 are sectional views of profiles constituting other variants of the invention, and
- FIGS. 7 and 8 illustrate variants similar to that of FIG. 5.
Sur la vue en coupe de la figure 1, on voit trois tronçons de châssis, deux tronçons 10 et 12 vus en coupe transversale et un tronçon 14 vu de face, assemblés perpendiculairement, afin de définir un châssis rectangulaire.In the sectional view of Figure 1, we see three frame sections, two
Chaque tronçon de châssis consiste en un profilé creux définissant un rail interne 16 débouchant par une fente 18 sur la tranche interne du châssis. Sur sa face opposée à la fente 18, c'est-à-dire sur la tranche externe du châssis, le profilé comporte deux rainures 20, 22 de section sensiblement semi-circulaire et débouchant à l'extérieur par une embouchure rétrécie 24. Les rainures s'étendent sur toute la longueur des tronçons du profilé.Each chassis section consists of a hollow section defining an
Le châssis comprend également un dispositif de tensionnement sous la forme d'un joint élastique 26 longiligne de section sensiblement complémentaire à celle de la rainure 20, 22, donc dans ce mode de réalisation, une section circulaire comme illustré à la figure 1.The chassis also comprises a tensioning device in the form of an elongated
Pour fixer et tendre une toile 28 sur le châssis, on commence par disposer la toile sur le dessus du châssis, en laissant redescendre les bordures 30 de la toile le long des tranches externes du châssis.To fix and stretch a
Ces bordures de toile sont maintenues en recouvrement de l'embouchure de la rainure 20, puis on force le joint en pénétration dans la rainure, à travers l'embouchure rétrécie 24 grâce à l'élasticité du joint, réalisé en un matériau adéquat, du caoutchouc par exemple.These canvas edges are held in overlap with the mouth of the
La bordure de toile est également forcée en pénétration dans la rainure, ce qui a pour effet de fixer la toile sur le châssis sous une tension uniformément répartie, une fois que le joint a été introduit dans les rainures de tous les tronçons du profilé.The fabric border is also forced into penetration in the groove, which has the effect of fixing the canvas on the frame under a uniformly distributed tension, once the seal has been introduced into the grooves of all the sections of the profile.
Il va de soi que dans ce mode de réalisation, le joint peut être d'un seul tenant et couvrir la totalité du périmètre du châssis, ou encore être formé d'une succession de tronçons de même longueur que les tronçons de profilés.It goes without saying that in this embodiment, the seal can be in one piece and cover the entire perimeter of the chassis, or even be formed of a succession of sections of the same length as the sections of sections.
La toile 28 peut consister en une toile de peintre, sans qu'il s'agisse d'une application limitative. Elle peut consister en une toile décorative ou non, en matériau textile, ou tout autre matériau en feuille souple.The
Après peinture de la toile, on peut garnir le pourtour de châssis d'un profilé d'habillage 32 à section en forme de C ou de L, simplement emboîté autour des tronçons de profilés du châssis.After painting the canvas, the periphery of the chassis can be garnished with a covering
En variante, comme illustré sur la partie droite de la figure 1, on pourra fixer une seconde toile 34 au verso du châssis, tendue au moyen d'un second joint 36 forcé en pénétration avec les bordures de cette seconde toile dans la seconde rainure 22.As a variant, as illustrated on the right-hand side of FIG. 1, it is possible to fix a
A la figure 3, on a brièvement illustré l'utilisation du châssis selon les enseignements de la demande FR 86 11261.In FIG. 3, the use of the chassis has been briefly illustrated according to the teachings of
Un certain nombre de coulisseaux 40 sont disposés dans la partie interne formant rail 16. Ces coulisseaux se terminent, hors de la fente 18, par des oeillets 42 qui servent à la mise en place d'une cordelette de tensionnement 44 disposée en zig-zag entre des oeillets 46 de la toile 48 et les oeillets 42 des coulisseaux.A number of
Bien entendu, dans ce cas, les rainures 20 et 22 du profilé sont inutilisées et on peut également prévoir un cadre d'habillage 32 afin de cacher les tronçons du châssis et les coulisseaux.Of course, in this case, the
A la figure 4, on a illustré une pièce de liaison, ou équerre 50, permettant la liaison entre deux tronçons de profilé consécutifs 10 et 12.In FIG. 4, a connecting piece, or a
L'équerre 50 comporte deux ailes 52 et 54 qui s'emboitent à l'intérieur des profilés creux et qui portent deux vis 56, 58 de maintien. Lorsque les deux tronçons sont emboîtés sur l'équerre 50, on procède au serrage des vis 56, 58 eu travers de la fente 18 et les vis assurent le maintien des profilés par arc-boutement au fond de la cavité interne des profilés.The
Bien entendu, l'angle séparant les ailes de l'équerre 50 pourra être différent de 90° comme illustré et on pourra prévoir une série d'équerres ayant des ailes séparées par des angles différents afin de créer des châssis ayant virtuellement n'importe quelle forme polygonale.Of course, the angle separating the wings of the
Le dispositif de tensionnement pourra consister au choix en une bande en boucle comme dans le cas précédent, ou en un joint du type décrit en relation avec les autres modes de réalisation et formant une boucle fermée.The tensioning device can consist of a loop band as in the previous case, or a joint of the type described in relation to the other embodiments and forming a closed loop.
Enfin, bien que la description se réfère à un profilé pourvu de deux rainures, il va de soi qu'une seule rainure pourra suffire dans le cadre de l'invention.Finally, although the description refers to a profile provided with two grooves, it goes without saying that a single groove may suffice in the context of the invention.
On a illustré une telle possibilité à la figure 5, avec une variante dans laquelle le profil de rainure est trapézoïdal. On pourra d'ailleurs fixer une seule toile, ou deux, dans la même rainure.Such a possibility has been illustrated in FIG. 5, with a variant in which the groove profile is trapezoidal. We can also fix a single canvas, or two, in the same groove.
D'autre part, la rainure pourra être prévue le long du bord de profilé correspondant à l'une des faces du châssis, comme illustré à la figure 6.On the other hand, the groove may be provided along the profile edge corresponding to one of the faces of the frame, as illustrated in FIG. 6.
Les matériaux utilisés pour réaliser les différents composants seront ceux que l'on utilise habituellement dans l'état de la technique :
- métal, matière plastique ou matériaux composites pour les profilés ;
- caoutchouc, caoutchouc-mousse, élastomères pour les joints ;
- métal ou matière plastique, décoré ou non, pour les profilés d'habillage.
- bande textile ou élastomère pour les bandes de tensionnement.
- metal, plastic or composite materials for the profiles;
- rubber, foam rubber, elastomers for seals;
- metal or plastic, decorated or not, for the trim profiles.
- textile or elastomeric band for tensioning bands.
Comme illustré à la figure 7, le profilé utilisé pour former le châssis a une section du type de celle illustrée à la figure 5.As illustrated in FIG. 7, the profile used to form the chassis has a section of the type of that illustrated in FIG. 5.
La partie centrale 11 du profilé 10 forme un rectangle creux et à partir de deux sommets adjacents font saillie deux parois 60, 62 qui définissent ensemble une rainure 20, de section trapézoïdale.The
Les deux parois comportent une partie initiale (60a, 62a) légèrement inclinée vers l'extérieur, le long des bords inclinés du trapèze, et une partie terminale (60b, 62b) s'étendant vers l'intérieur le long de la grande base du trapèze, l'embouchure rétrécie 24 de la rainure 20 étant définie entre les extrémités des parties terminales (60b, 62b) des deux parois 60, 62. Le profilé 10 est réalisé de préférence en métal, avantageusement de l'aluminium.The two walls have an initial part (60a, 62a) slightly inclined towards the outside, along the inclined edges of the trapezoid, and a terminal part (60b, 62b) extending inwards along the large base of the trapezoid, the narrowed
Le dispositif de tensionnement 26 consiste en une baguette 64 allongée comprenant une base plane 66, de largeur supérieure à celle de l'embouchure rétrécie et deux ailes 68, 70 parallèles en saillie sous la base plane 66. Les deux ailes 68, 70 présentent sur leurs faces opposées des bourrelets 72, 74 ou griffes d'accrochage qui viennent s'encliqueter sous les extrémités des parois du profilé 10 par déformation élastique des deux ailes, en emprisonnant la toile 28 tendue sur le châssis.The
Ce mode de réalisation permet d'utiliser des toiles 28 d'épaisseurs différentes tout en assurant une tension correcte, grâce à l'élasticité des ailes 68, 70 de la baguette 64.This embodiment makes it possible to use
En effet, les tronçons de profilé 10 sont assemblés de manière que la rainure 20 soit disposée sur le chant extérieur du châssis. La toile 28 est posée sur le châssis, la bordure de la toile retombant le long des chants extérieurs face à l'embouchure 24 des rainures 20. Les baguettes 64 sont alors engagées à force dans les rainures 20, en entraînant les bordures de la toile, jusqu'à encliquetage des bourrelets 72, 74 sous les extrémités (60b, 62b) des parois du profilé qui définissent l'embouchure rétrécie 24 de la rainure 20.Indeed, the
Au coin du châssis, on observe que la toile doit être repliée afin de présenter un aspect correct. De ce fait, la baguette de tensionnement 64 emprisonne localement trois épaisseurs de toile, ce qui est facilité par la configuration de la baguette.At the corner of the frame, we observe that the canvas must be folded in order to present a correct appearance. Therefore, the tensioning
Par ailleurs, du fait que les parois 60, 62 du profilé 10 divergent légèrement vers l'extérieur à partir de l'âme 11, la toile 28 est en appui le long de l'extrême pourtour du châssis, sensiblement sur une arête 76, ce qui évite les problèmes de bavures de la peinture entre la toile 28 et le châssis 10.Furthermore, the fact that the
Comme illustré à la figure, la base plane 66 de la baguette comporte deux nervures 78, 80 du même côté que les ailes 68, 70 et à l'extérieur de celles-ci, destinées à venir en appui contre les parties terminales 60b, 62b, des parois de la rainure 20.As illustrated in the figure, the
On notera que le choix d'un métal, notamment l'aluminium, comme matériau pour le profilé 10 de châssis permet de se passer d'organes de rétablissement de tension comme c'est généralement le cas dans les produits traditionnels, à châssis en bois.It will be noted that the choice of a metal, in particular aluminum, as the material for the
En effet, le tension imprimée à la toile impose à l'ensemble du châssis une déformation élastique réversible et toute contraction ou dilatation de la toile 28, notamment suite à des variations des conditions hygrométriques ambiantes se traduit par des augmentations ou réductions de la déformation du châssis qui maintiennent la tension de la toile sensiblement constante.Indeed, the tension imparted to the fabric imposes on the entire chassis a reversible elastic deformation and any contraction or expansion of the
Les matériaux tels que le bois ou les matières plastiques présentent des déformations plastiques permanentes qui ne permettent pas en pratique de tels effets.Materials such as wood or plastics have permanent plastic deformations which do not allow such effects in practice.
Enfin, comme illustré le cadre d'habillage 32 du châssis consiste en un profilé 82 en forme de C à deux branches 84, 86 légèrement convergentes, emboîté autour du profilé 10 de châssis, et comportant sur un côté une lèvre 88 de recouvrement se projetant vers l'intérieur du châssis, afin de masquer la baguette de tensionnement 64 ainsi que des marges de la toile 28.Finally, as illustrated, the covering
Grâce à cet arrangement, le cadre d'habillage 32 est pratiquement indépendant du châssis qui peut se déformer librement, tandis que les découpes en biais aux coins du cadre d'habillage peuvent rester parfaitement jointives en toutes circonstances.Thanks to this arrangement, the covering
Selon la variante illustrée à la figure 2, le profilé 82 du cadre d'habillage est maintenu sur les bordures des baguettes de tensionnement 64.According to the variant illustrated in FIG. 2, the
A cet effet, les deux branches 84, 86 du profilé se terminent par deux griffes rentrantes 90, 72 qui viennent s'engager entre les bordures de la base plane 66 de la baguette et le profilé de châssis, au delà des nervures 78, 80.To this end, the two
Grâce à cette disposition, on évite que les branches 84, 86 du profilé ne viennent appuyer sur la toile 28 tendue sur le châssis.Thanks to this arrangement, it is avoided that the
Enfin, il apparaîtra à l'homme de métier que l'invention ne se limite pas à un cadre dans lequel les profilés sont munis d'une gorge et le dispositif de tensionnement est reçu dans la gorge, mais couvre également un cadre dans lequel les profilés sont munis d'une nervure en saillie et le dispositif de tensionnement comporte une gorge qui coiffe cette nervure.Finally, it will be apparent to those skilled in the art that the invention is not limited to a frame in which the profiles are provided with a groove and the tensioning device is received in the groove, but also covers a frame in which the profiles are provided with a projecting rib and the tensioning device has a groove which covers this rib.
Claims (10)
- Chassis constituted of a plurality of segments assembled along a selected polygonal contour, said segments being constituted by section pieces (10, 12, 14) having at least one longitudinal groove (20) along one of their peripheral edges, said groove being adapted to receive a border in a cloth (28) disposed on said chassis, and a tensioning device (26) of elongate shape, which extends over the whole perimeter of the chassis, and is held in place in said groove (20), characterized in that the walls (60, 62) of the peripheral edge of the section piece (10) defining said groove (20) comprise end portions (60b, 62b) defining a narrowed mouth (24) for said groove (20) and in that the tensioning device (26) consists in an elongate strip (64) comprising a base (66) designed to come into resting contact against the end portions (60b, 62b) outside the groove (20) and of which the width is greater than that of the narrowed mouth (24) and two parallel flanges (68, 70) projecting from said base and having on their opposite faces, beads (72, 74) designed to be snap-engaged into said mouth (24) by elastic deformation of the two wings.
- Chassis according to claim 1, characterized in that the base (66) of the strip comprises two grooves (78, 80) extending on the same side as the flanges (68, 70) and outside thereof, and designed to come into resting contact against the end portions (60b, 62b) of the walls of said groove (20).
- Chassis according to any one of claims 1 and 2, comprising said groove (20) on its external side.
- Chassis according to any one of claims 1 to 3, in which the cross-section of said groove (20) is trapezoidal.
- Chassis according to any one of claims 1 to 4, in which said section piece (10) is hollow, of rectangular shape.
- Chassis according to any one of claims 1 to 3 or 5, characterized in that the groove (20) has a V-shaped cross-section.
- Chassis constituted of a plurality of segments assembled along a selected polygonal contour, said segments being constituted by section pieces (10, 12, 14) having at least one longitudinal groove (20) along one of their peripheral edges, said groove being adapted to receive the border of a cloth (28) disposed on said chassis, and a tensioning device (26) of elongate shape, which extends over the whole perimeter of the chassis, and is held in place in said narrowed groove (24) narrowed groove (24) and said tensioning device consisting in elastic conditions in an elastically deformable loop, of width substantially equal to that of the groove.
- Chassis according to any one of claims 1 to 3, 5, 7, 8, characterized in that the groove (20) has a U-shaped cross-section.
- Chassis according to one of the preceding claims, characterized in that the section piece comprises two parallel grooves (20, 22).
- Chassis according to one of the preceding claims, characterized in that the section piece is shaped, on the side of the inner edge of the chassis, as a rail (16) adapted to receive slide-blocks (40).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8800876A FR2626216B1 (en) | 1988-01-26 | 1988-01-26 | CHASSIS FOR PAINTING CANVAS |
FR8800876 | 1988-01-26 | ||
FR8816082 | 1988-12-07 | ||
FR8816082A FR2639879B2 (en) | 1988-01-26 | 1988-12-07 | IMPROVEMENT TO A CHASSIS FOR PAINTING ARTIST CANVAS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0326487A2 EP0326487A2 (en) | 1989-08-02 |
EP0326487A3 EP0326487A3 (en) | 1990-11-28 |
EP0326487B1 true EP0326487B1 (en) | 1994-12-07 |
Family
ID=26226464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89400213A Expired - Lifetime EP0326487B1 (en) | 1988-01-26 | 1989-01-26 | Frame for tensioning a canvas |
Country Status (6)
Country | Link |
---|---|
US (1) | US4947561A (en) |
EP (1) | EP0326487B1 (en) |
AT (1) | ATE115059T1 (en) |
DE (1) | DE68919719T2 (en) |
ES (1) | ES2066868T3 (en) |
FR (1) | FR2639879B2 (en) |
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DE20001063U1 (en) * | 2000-01-22 | 2001-03-15 | Kreidezeit Naturfarben Gmbh | Frame with membrane |
DE102004052367B4 (en) * | 2004-06-29 | 2010-12-02 | Ellermann, Margarete | Cladding element for a wall and / or a ceiling |
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US8393055B2 (en) * | 1997-05-21 | 2013-03-12 | Ted Gower | Track mount for flexible impact resistant enclosure |
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-
1988
- 1988-12-07 FR FR8816082A patent/FR2639879B2/en not_active Expired - Lifetime
-
1989
- 1989-01-23 US US07/300,675 patent/US4947561A/en not_active Expired - Lifetime
- 1989-01-26 AT AT89400213T patent/ATE115059T1/en not_active IP Right Cessation
- 1989-01-26 DE DE68919719T patent/DE68919719T2/en not_active Expired - Lifetime
- 1989-01-26 ES ES89400213T patent/ES2066868T3/en not_active Expired - Lifetime
- 1989-01-26 EP EP89400213A patent/EP0326487B1/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20001063U1 (en) * | 2000-01-22 | 2001-03-15 | Kreidezeit Naturfarben Gmbh | Frame with membrane |
DE102004052367B4 (en) * | 2004-06-29 | 2010-12-02 | Ellermann, Margarete | Cladding element for a wall and / or a ceiling |
Also Published As
Publication number | Publication date |
---|---|
EP0326487A2 (en) | 1989-08-02 |
FR2639879B2 (en) | 1995-01-06 |
ATE115059T1 (en) | 1994-12-15 |
FR2639879A2 (en) | 1990-06-08 |
ES2066868T3 (en) | 1995-03-16 |
DE68919719D1 (en) | 1995-01-19 |
DE68919719T2 (en) | 1995-07-06 |
EP0326487A3 (en) | 1990-11-28 |
US4947561A (en) | 1990-08-14 |
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