FR2840964A1 - Section for fixing stretched canvas comprises core from which elastically deformable webs extend which have elastically deformable reinforcements interposed between them - Google Patents

Abstract

The section for immobilizing a canvas in a groove of a carrying structure comprises a core (11) from which two elastically deformable webs (12) extend. Elastically deformable reinforcements (20) are interposed between the webs. An Independent claim is included for a decorative panel with a groove for immobilizing a stretched canvas.

Description

toothed wheel (4).

  The present invention relates to the technical field of the devices used

  for the support of a canvas or a stretched, decorative or advertising tarpaulin.

  In the above field, it is known to implement, in order to produce a decorative or advertising panel, a support structure provided with at least one peripheral groove in which a rod is engaged, in order to block a canvas or a stretched tarpaulin which is placed inside the throat, interposed between

  this behind and the immobilization strip.

  Such a supporting structure, constituting a decorative panel or

  advertising, in particular was described by patent EP 0 326 487.

  According to this document, the rod is formed by one or more sections, cons of a profile which includes a core from which extend at least two elastically deformable wings, substantially parallel to each other and distant from each other . The web has a width greater than that of the opening of the peripheral groove and the elastic wings also have a maximum width greater than that of this opening, in order to be wedged in the peripheral groove. Such a profile effectively makes it possible to immobilize a tarpaulin or

  canvas in the peripheral groove of the supporting structure.

  However, it has become apparent, in use, that this profile does not allow, under certain circumstances, to secure the stretched tarpaulin having sufficient resistance to tearing. However, this lack of resistance to tearing, can appear to be prohibitive in certain configurations of use, in particular when fixing large sheets which can be subjected to relatively large forces when they are placed outside. and what

  must be subjected to inclement weather, especially the wind.

  It therefore appears necessary to have a new type of profile which is capable of offering a greater resistance to tearing than that offered by the

  asset profile according to prior art.

  In order to achieve this objective, the invention relates to a profile for immobilizing a canvas, tarpaulin or the like in a groove of a supporting structure, the profile comprising a core from which extend at least two wings. elastically deformable, substantially parallel to each other and distant

one from the other.

  According to the invention, the immobilization profile is characterized in that it comprises elastically deformable reinforcement means interposed between the immobilization wings. Thus, the reinforcing means make it possible to increase the stiffness of the wings, thereby increasing the resistance to tearing of the fixing obtained by ['insertion

  of the profile according to the invention in a groove of complementary shape.

  The profile according to the invention can be produced in any suitable manner and, preferably but not strictly necessary, the core, the wings and the reinforcing means form a single piece, so that the profile according to the invention constitutes a all unitary. Preferably, the profile is then made in terms of

  plastic extruded or pultruded through a die.

  According to the invention, the reinforcing means can be conformed to different

  ways depending on the desired stiffness.

  According to a first embodiment, the reinforcing means comprise two arches which each extend from a wing and which are arranged opposite

one from the other.

  According to a preferred embodiment of the invention, the reinforcing means

  comprise at least one spacer extending between the two wings.

  The spacer can then be connected to the wings at different levels relative to the web of the profile depending on the desired stiffness. According to a characteristic of

  ['invention, ltentretoise relic the ends of the wings located opposite the soul.

  According to yet another characteristic of the invention, the spacer is arched and the concavity of the spacer is preferably, but not necessarily,

oriented to the opposite of the soul.

  According to another characteristic of the invention, the spacer has a <<V>> shape. According to the invention, the reinforcing means may comprise one or more spacers. Thus, according to a characteristic of the invention, the reinforcing means comprise two arched spacers which extend between the two wings and whose

  wind concavities arranged opposite.

  According to another characteristic of the invention, in order to allow better locking of the profile in its receiving groove, each wing has, in the vicinity of its end opposite to the core and on its outer face, a relief or a

convex blocking conformation.

  According to another characteristic of the invention, the base of each wing is located

  away from the edge closest to the profile.

  In accordance with the invention, the core of the profle can have different shapes depending on the supporting structure and the groove in which it will have to be adapted. Thus, the soul can have an arched shape. However, according to a preferred but not strictly necessary characteristic of the invention, the core of the profile is substantially planar and the wings extend perpendicular to this

1 0 behind.

  The invention also relates to a decorative or advertising panel comprising: a supporting structure provided with at least one peripheral groove, a rod arranged in the groove to immobilize therein a stretched canvas or tarpaulin,

  characterized in that the strip is formed by the profile described above.

  Various other characteristics of the invention will emerge from the description below.

  below made with reference to the accompanying drawings which illustrate various non-limiting forms of production of a profile according to the invention and of a decorative panel

  or advertising using such a profile.

  The f'g. 1 is a partially cut schematic perspective of a panel

  decorative or advertising using a profile according to the invention.

  Fig. 2 is a cross section along the plane II-II of FIG. 1

  showing a preferred embodiment of a profile according to the invention.

  The ffg. 3 to 5 are sections, similar to FIG. 2, different monkant

  embodiments of an immobilization profile according to the invention.

  A profile according to the invention is intended to constitute a strip 1 implemented in the context of a decorative or advertising panel, as illustrated in ffg. 1

  and designates as a whole by reference 2.

  The panel 2 comprises a support structure 3 which has at least one and, according to the example illustrated, exactly a peripheral groove 4. The panel 2 also comprises a canvas or tarpaulin 5 which is pinched or immobilized in the

groove 4 by the rod 1.

  In order to secure the tarpaulin 5 on the supporting structure 3, which offers good resistance to tearing when a tensile force is applied to the tarpaulin or canvas 5, the invention proposes to produce the rod 1 from 'a profile 10,

  as qutilluske, on a larger scale, at the ffg. 2.

  Profile 10 includes, as shown in the cross section, ffg. 2, a core 11 from which extend two wings 12 substantially parallel to one another. According to the example illustrated, the core 11 is substantially planar and the wings 12 hang perpendicularly to this rear. As is clear from the ffg. 2, the wings 12 are distant from one another and their base 13 is located at a distance from the nearest edge 14 of the core 11. Thus, the core 11 has a width L greater than the width I of the opening of the groove 4 in which the two wings 12 are intended to be engaged simultaneously. In order to avoid untimely extraction of the profle 10 from the groove 4, each wing 12 has, in the vicinity of its end 15, opposite the core 11, a relief or a convex blocking conformation 16 brought on the outside face of the corresponding wing 12. Thus, the profle 10 presents, at the level of the conformations 16, a width L greater than the width I of the opening.

throat 4.

  In accordance with an essential characteristic of the invention, in order to increase the stiffness of the elastically deformable wings 12 facing a stress which would be applied to them in the direction of bringing the two wings 12 closer together. The profile 10 further comprises elastically deformable reinforcement means 20,

  interposed between the immobilizing wings 12.

  The reinforcing means 20 can, of course, be made in any suitable manner. According to the example illustrated, the reinforcement means 20 wind constituted by a spacer 21 in a "V" shape which connects each of the ends 15 of the wings 12. As shown in ffg. 2, the tip 22 of the "V", defined by the spacer 21 constituting the

  reinforcement means 20 is. preferably oriented towards the core 11 of the profile 10.

  The profile 10 thus formed can be made in any way and in any suitable material. Preferably but not strictly necessary, the profile 10 is made of plastic, such as, for example but not exclusively, extruded PVC. The core 11, the wings 12 and the reinforcing means 20 then form a one-piece or unitary assembly which has a low cost price, while offering

  particularly satisfactory mechanical characteristics.

  s The profile according to the invention thus constituted is implemented in the following manner. The fabric 5 is placed on the supporting structure 3, so as to cover the opening of the peripheral groove 4. Then, the rod 1, produced from one or more sections of profiles 10 is force-fitted into the groove 4 , so as to pinch the fabric 5, between the edges of the opening of the groove 4 and the wings 12. The additional stiffness, offered by the reinforcement means 20, then ensures good pinching

  canvas 5 between the rod 1 and the edges of the groove 4.

  According to the example described above and illustrated in FIGS. 1 and 2, the reinforcement means 20 wind constituted by a spacer 21 in "V". However, according to the invention, such a form of the reinforcement means 20 and of the spacer 21 is not strictly necessary. Thus, fig. 3 illustrates an embodiment of the reinforcement means 20 according to

  which the spacer 21 is arched, with its concavity oriented opposite the core 11.

  In addition, according to this example, the spacer 21 in an arc of a circle connecting the wings 12 by being placed at a distance from their ends 15 opposite the core 11. Each end of the spacer 21 is. according to this example, placed in the concavity correspond to the

relief 16.

  According to the example illustrated in FIG. 4, the wind reinforcement means 20 constituted by two arched spacers 21 and 25, the wind convexites of which are oriented towards

The other.

  According to the example illustrated in FIG. 5, the reinforcement means 20 are not formed by a spacer connecting the two wings 12, but by two arches 26 which each extend from one wing 12 while being linked by their two ends to the same wing. The arches 26 are arranged opposite one another, so that when an effort is applied to the wings 12 in the direction of their approach, the

  arches 26 abut one on the other.

  Of course, all other embodiments could be adopted

  for the reinforcement means 20 without departing from the scope of the present invention.

Claims (11)

  1- Profile for the immobilization of a canvas, tarpaulin or the like in a groove of a supporting structure, profile comprising a core (11) from which extend at least two elastically deformable wings (12), substantially parallel between them and distant from each other, characterized in that it comprises elastically reinforcing means (20)   deformable interposed between the wings (12).   2 - Profile according to claim 1, characterized in that the core (11), the wings (12)   and the reinforcing means (21) form a one-piece assembly.   3 - Profle according to claim 2, characterized in that it is made of material extruded or pultruded plastic.   4 - Profile according to one of claims l to 3, characterized in that the means   reinforcement (20) comprise two arches (26) which each extend from a   wing (12) and which wind arranged opposite one another.   5 - Profile according to one of claims l to 3, characterized in that the means   reinforcement (20) comprise at least one spacer (21) extending between the two wings (12).   6 - Profile according to claim 5, characterized in that the spacer (21) relic   ends (15) of the wings (12) located opposite the core (11).   7 - Profile according to claim 5 or 6, characterized in that the spacer (21) is arched. 8 - Profile according to claim 7, characterized in that the concavity of   the spacer (21) is oriented opposite the core.   9 - Profile according to claim 7 or 8, characterized in that the spacer (21) has a "V" shape.   - Profile according to claim 5, characterized in that the reinforcing means (20) comprise two arched spacers (21, 25) which stetendent between the two   wings (12) and whose wind concavites are arranged opposite.   11 - Profile according to one of claims 1 to 10, characterized in that each   wing (12) present, in the vicinity of its end (15) opposite the core (11) and on its   outer face, a convex locking conformation (16).   12 - Profile according to one of claims 1 to 10, characterized in that the base   (13) of each wing (12) is located at a distance from the nearest edge (14) of the web of the profile (11).   13 - Profle according to one of claims 1 to 10, characterized in that the core (11)   is substantially planar. 14 - Decorative or advertising panel comprising: A supporting structure (3) provided with at least one peripheral groove (4), A rod (1) arranged in the groove (4) to immobilize a canvas or a tarpaulin (5 ) stretched, characterized in that the strip (1) is constituted by a profile according to one