FR2632677A1 - ROOF IN FLEXIBLE MATERIAL - Google Patents

Abstract

The invention relates to a roofing made of stretched flexible material. The roofing of the invention consists essentially of six girders (1, 2, 3, 4, 5, 6) connected to one another, at their ends, by articulated joining pieces (A, BB', CC'), so as to form three triangles with the same base (BB'), two of which, called lateral triangles, (BB'C - BB'C') have their vertices situated on each side of this base respectively and the third, called a ridge triangle, (ABB') has its vertex (A) situated above the planes of the other two, a flexible material is stretched, on the one hand, between the sides (5, 6) of the said ridge triangle and the sides (1, 2) of one of the lateral triangles, and, on the other hand, between the sides (5, 6) of the said ridge triangle and the sides (3, 4) of the other lateral triangle, thus creating a roofing having the form of two hyperbolic paraboloids juxtaposed along the sides (5, 6) of the ridge triangle.

Description

It has been known for a long time to make canvas roofs for

  temporary use such as tents or marquees. It is also known that, since the developments of coated textiles, it is possible to make roofs based on these materials, no longer simply carried by a structure, but strongly stretched so as to form

  surfaces more resistant to external stresses

  especially in wind and snow.

  The implementation of these tensioned roofs is always delicate because the tension applied to the traction points must be balanced so as to obtain a distribution

optimal efforts.

  The handling and transport of these roofs impli-

  first to mount the supporting structure, then to

  deploy the cover surface, attach it to the structure

  ture, and finally to put it in tension.

  Finally the efforts necessary to the tension of these

  Roofs must be taken outside and the most

  wind by anchoring on the ground which it is sometimes difficult

to estimate the resistance.

  Nevertheless, these taut roofs offer both strength and aesthetic benefits.

  are preferred by users.

  The present invention proposes to offer a solution that makes it possible to avoid the drawbacks of transporting and implementing tensioned roofs while at the same time providing

  advantages of aesthetics and modularity allowing

  quickly destroy any covered spaces on any floor. The subject of the invention is a roof made of material

  flexible structure characterized by the fact that it is

  killed essentially by six beams, connected at their extremities by articulated junction pieces, so as to form three triangles of the same base of which two, which we shall call lateral triangles, have their vertices situated respectively on each side of this base, and the third, which one will call triangle of made, has its summit situated above the plans of the two others, and a supple material is stretched, on the one hand, between the sides of said triangle of fact and the sides of one of the lateral triangles, on the other hand, between the sides of the said triangle of fact and the sides of the other lateral triangle, thus realizing a roof having the shape of two parabololdes

  hyperbolic contiguous along the sides of the triangle made.

  The roof according to the invention is of an extrame-

  simple, because it has, we see, only six beams and five means of articulation, namely three joints between two parts and two joints between

three pieces.

  The flexible material of the roof can be fixed permanently, by the appropriate edges, on the six beams of the triangles and the assembly no longer requires that the positioning of the lateral triangles relative to the triangle of fact, causing

  then the tensioning of the flexible surface.

  3o The fixing of the flexible material on the beams can be obtained by providing them with grooves and edges of the material of rods of a diameter slightly

  less than that of the cross-section of the grooves.

  In a particularly advantageous embodiment

  the beams are of equal lengths two by two, and preferably all of the same length giving

  thus to the three triangles the form of isosceles triangles.

  This achievement has additional advantages

  simplicity and convenience of storage and trans-

  wearing the constituent elements of the roof. Indeed,

  joints between beams. being oriented appropriately

  they can fall back

  against each other occupying then a minimal space.

  The roof according to the invention can be worn by all

  means connecting the four vertices of the two lateral triangles

  to the chosen support. But, in principle, these vertices are connected to the bearing surface by parallel feet whose upper ends are connected by articulation.

to these summits.

  When the beams of the roof are foldable against each other, the support legs can,

  of course, also against them.

  Maintaining the beams in position can be assured

  by any means of rigid connection articulated on the

  trellis and feet of each-dihedrals of the summits of

lateral triangles.

  By way of no limitation, it is shown in the drawing

  annexed, an exemplary embodiment of a roof according to the invention

  In its simplest and most practical form, it is the one in which the six beams are of the same length. In the drawing Fig. 1 is a perspective view of the supporting structure of the roof, and FIG. 2 is a perspective view of an assembly of four roofs according to FIG. 1. In the example of fig. 1, the triangle of fact ABB '

  consists of the two beams 5, 6 and the two trenches.

  lateral angles CBB 'and C'BB' by beams 1, 2 and 3,

  4 respectively. These three triangles are here equilateral.

  The vertices BB'CC 'are connected to the support surface S by means of

  feet 7, 8, 9, 10 r2speczely, whose length is chosen

  depending on the inclinations required for the roof.

  Here the feet 7 and S of the same length are smaller than the feet 9, 10 also of the same length. In each of

  vertices, appropriate articulation means are provided.

  In A the joint allows the folding of the beam 5

  against the beam 6; in B and B 'respectively the rabatte-

  2 and 3 against 5 and the folding of 1 and 4 against 6.

  In C and C 'respectively, the drawdown of 1 against 2 and

that of 3 against 4.

  Each of the beams 1, 2, 3, 4 has a groove

  along its edge and the beams 5 and 6 comprise each

  one groove along two of their edges. They

  could have up to 4 grooves.

  The flexible surface forming the vault, a coated fabric S by

  example, wears on its edges a ring of light diameter-

  less than the cross-section of these grooves. your rods are introduced into these grooves so as to ensure, on the one hand, the seal between the beam and the fabric, on the other hand

  on the other hand, as regular a link as possible between the

  trelle and fabric to ensure even distribution

tensions.

  The fabric once permanently placed in these grooves it is clear that the unfolding of the beams

  causes the tensioning of the flexible surface.

  The holding of the beams in position is ensured by articulated bars 11, 12 forming triangles in each dihedron of the corner pieces B, B ', C, C' and folding in parallel.

  along the beams 1, 2, 3, 4. -

  We see that the implementation of the vrote which has just been described is particularly simple since it consists only in unfolding the beams 1, 2, 3, 4, 5 and 6 on

  the chosen site then to put in place the bars ll, 12 ...

  in each dihedron to obtain, at the same time, the definitive geometry of the whole and the perfect tension of the

soft surface.

  The four corners B, B ', C, Ct are here at different heights above the ground, two by two diagonally,

  depending on the length of the feet 7, 8, 9 and 10, which can be teles-

  copics to allow on-site adjustment based on soil inequalities so as to direct the flow of stormwater when

  several elements are assembled.

  Another important advantage of the invention lies in the modularity of the system. Indeed, the grooves located along the edges of the side beams can be used

  to introduce a seal between two structures.

  made for example in the same material as the roof and

  having identical rods, likewise identical grooves

  along the edges of the feet allow the subsequent installation of side panels for use of closure or partition. Figure 2 clearly shows how it is possible to assemble the elements four by four by ensuring the flow of rainwater to the four corners

from the whole.

  Even better, once the four elements are assembled, it is possible to remove the four central foot beams and thus obtain an enclosure covered with an area four times greater than the surface of the initial module, without any intermediate post, which is

  particularly appreciated by the users.

  The device according to the invention can be realized in any dimension, the limit being fixed

  by the resistance of the materials used for its construction

  tion. Nevertheless, to keep all the advantages of ease of implementation and transport, it will be preferred to

  dimensions compatible with the usual means of

  port and masses that are compatible with

light.

  The most common achievements lead to dimensions allowing to realize enclosures covered with

  two, three, five and ten meters apart.

Claims (7)

claims   1. Roof made of soft tenau material characterized by the   that it consists essentially of six   trellises (1, 2, 3, 4, 5, 6)! interconnected, at their ends, by articulated junction pieces (A, BB ', CC'V, so as to form three triangles of the same base (BB'I, two of which, we will have side triangles (BB' C-BB'C '), nnr their vertices situated respectively of each c8zé of this base and the third one, which one will call triangle of made (ABB -'., Has its vertex (A) located above the planes of two others, a scuple material is stretched, on the one hand, between the sides (5, 6) of the ten triangle of faze and the sides (1, 2) of one of the lateral triangles, on the other hand, between the sides (5 , 6) of said triangle made and the sides (3, 4) of the other lateral triangle, thus realizing a roof having the form of two hyperbolic paraboloids   contiguous along the sides (5. 6) of the triangle of fact.   Roof according to claim 1, wherein the   flexible material is fixed permanently, by its   the six beams (1, 2, 3, 4, 5, 6)   triangle of made and lateral triangles.   Roofing according to claim 2, wherein the   trowels (1, 2, 3, 4, 5, 6) are provided with rectilinear grooves   gnes and selvedges of the flexible material of rushes with a diameter slightly smaller than that of the cross-section said grooves. 3o   4. Roofing according to one of claims i to 3, in the-   which the beams (5,6 - 1,2 - 3,4) are of lengths glitters two by two.   The roof of claim 4, wherein all   the beams have the same length.   6. Roofing made of flexible stretched material characterized in that it is constituted by joining together at least   two roofs according to one of claims 1 to 5.   Roof according to claim 2 and claim 6,   in which the joining is carried out by a gasket   common genuity housed in the grooves of the contiguous beams.