WO2012032258A1

WO2012032258A1 - Folding item with hoop structure

Info

Publication number: WO2012032258A1
Application number: PCT/FR2011/052037
Authority: WO
Inventors: Antoine Auffret; Vincent Chiffoleau; Ludovic Potier; Adrien Vaccaro; Abderrahman Elaammari
Original assignee: Decathlon
Priority date: 2010-09-10
Filing date: 2011-09-06
Publication date: 2012-03-15
Also published as: BR112013005788B8; RU2530804C1; CN103168141A; BR112013005788A2; EP2614200A1; FR2964687B1; CN103168141B; RU2013115882A; FR2964687A1; EP2614200B1; BR112013005788B1

Abstract

The invention relates to an item comprising a hoop structure and to the method of folding it, the item being foldable between a deployed configuration for use and a circular folded storage configuration, which finds a particular application in items of the tent or shelter type. The hoop structure comprises at least one loop and is secured to a flexible covering. Folding-assistance means are provided, comprising at least one element for grasping which is attached to a first source point of the loop, or of the covering along the loop, so that by pulling, the first source point can be brought toward a first target point of the loop, or of the covering along the loop, so as to allow at least two subloops to be formed by twisting the loop. The first target and source points meet the following combined conditions: a - the distance, measured along the loop, between the first source point and the first target point is greater than or equal to 2.π.R_rupt, where R_rupt is the limiting radius of curvature of the loop, b - when the loop is in a substantially non-planar form with at least one main major axis and at least one main minor axis, the {first source point; first target point} pair lies neither on the main major axis nor on the main minor axis, c - when the loop is in a substantially planar oblong shape, with at least one main major axis, the {first source point; first target point} pair does not lie on the main major axis.

Description

REPLIABLE ARTICLE WITH ARCEAUX STRUCTURE

The present invention relates to the field of articles which comprise a hoop structure and which are foldable between a deployed use position and a folded storage position in which folded position they have a circular configuration. This invention finds particular application folding items tent or shelter type.

This type of article conventionally comprises a flexible envelope, for example formed of one or more textile panels, integral with a structure in arches.

It is referred to as an arch structure when the flexible envelope, generally called a roof covering in the case of a tent or a shelter, is secured to flexible elements which take, in the deployed position of the article, a configuration in open or closed loop. These flexible elements may consist of flexible rods springback, in particular formed rods of composite material or metal or plastic, said rods being optionally connected to each other.

In some articles, the flexible rods are in the rectilinear state in the folded position of storage of the article and do not take the configuration loop or arc of circle when mounting the article. This is for example the case of some tents generally called tents domes.

In other articles, the elements of the arch structure form one or more closed loops, these loops in particular making it possible to give the article its three-dimensional dimension.

Such an article is described for example in the documents FR 2 877 966, FR 2 805 300 and FR 2 928 953.

In these documents, the elements of the arch structure, in the form of closed loops, are in the folded position of the article, in the form of several superposed circular turns.

To fold such articles, in order to reduce the size to transport and / or store, a number of manipulations are necessary, which are presented in the documents mentioned above. Such manipulations are intended to create sub-loops from the loop or loops forming the arch structure, and to superpose these sub-loops, so as to result in a structure having substantially the shape of a flat disc.

These manipulations are, however, not very intuitive and can sometimes be difficult to implement for an unaccustomed user. In particular, they require the use of a notice that presents the different steps. This notice may be lost or damaged. In addition, the use of this notice by a single person, being refolded, is not always easy.

Finally, such manipulations, especially for an unaccustomed user, can be relatively lengthy to implement.

The object of the invention is therefore to solve the aforementioned problems related to folding, among other problems.

The object of the present invention is thus to provide a collapsible article with an arch structure, in particular of the tent or shelter type, in which the passage in folded configuration is facilitated.

The invention thus relates, in a first aspect, to a collapsible article, in particular tent or shelter type, comprising a collapsible arch structure in a substantially circular configuration and having at least one loop. The article also comprises a flexible envelope integral with the arch structure, and folding assistance means.

These folding assistance means comprise at least one gripping element attached to a first source point of the loop, or a first source point of the flexible envelope along the loop.

This gripping element is adapted to allow, when applied to it, to bring back the first source point towards a first target point of the loop, or a first target point of the flexible envelope along the loop, so that to allow the formation of at least two sub-loops by twisting the loop.

In addition, the first target point and the first source point satisfy the following conditions which are cumulative conditions: a- the distance, measured along the loop, between the first source point and the first target point is greater than or equal to 2.7xR _rU pt _/ where R _rup t is the limit radius of curvature of the loop,

b- when the loop has a substantially non-planar shape, with at least one major major axis and at least a minor main axis, the pair {first source point; first target point} is neither on the main and minor axis,

c- when the loop has a substantially flat and oblong shape, with at least one major major axis, the pair {first source point; first target point} is not on the major axis.

Thus, the folding assisting means facilitate at least one of the steps of folding the arch structure, therefore the article itself, consisting of the formation of at least two sub-loops with the loop of the structure in arches.

By limiting radius of curvature R _rup t, we mean the radius of the curvature beyond which the loop is broken, for example in the case of the use of a material made of synthetic fibers, or the loop undergoes a deformation permanent and does not return to its original shape, for example in the case of the use of a material such as steel.

This limit radius of curvature therefore depends in particular on the nature of the material used for the loop as well as the diameter of the flexible rod or rods that can constitute the loop.

By substantially oblong loop is meant a loop having an elongated substantially circular shape which has at least one minor axis, or minor major axis, and at least one major axis, or major major axis.

Such a substantially oblong shape may be an ellipse, in which case it has a single minor axis, or minor axis, and a single major axis, or major major axis. But it can also be an elongated circular shape of shape having substantially rectilinear parts, as is illustrated in certain figures of the present description (in particular Figures 2b and 2c) which are detailed below, in which case this shape can present several major axes and / or several minor axes, ie at least one major minor axis in addition to the major major axis and / or at least a minor minor axis in addition to the minor axis.

In all these cases, the principal axes, small or large, are axes of symmetry, while the minor axes, large or small, are not, and all the minor or main axes are perpendicular to all the major axes. axes, main or secondary.

Such a substantially oblong shape in the sense of the invention may also be substantially ovoidal, with or without substantially straight portions, as illustrated in certain figures of the present description (in particular Figure 2d) which are detailed below. In such a case, this shape also has one or more major axes and one or more small axes, that is to say a major major axis and possibly one or more minor secondary axes, and a small main axis and possibly one or more minor minor axes.

In a first embodiment, the gripping means is attached by sewing on the flexible envelope, directly or via a seam on an intermediate textile piece such as a sleeve in which is inserted the loop.

In a second variant, possibly in combination with the previous one, the folding assistance means comprise a marker disposed at the first target point.

In a third variant embodiment, possibly in combination with one or more of the preceding embodiments, the gripping element is attached to a second source point of the loop, or of the flexible envelope along this loop, this gripping element being adapted to allow to bring the second source point to a second target point of the loop, or the flexible envelope along this loop, by pulling on the gripping element.

The first target point and the second target point can be confused.

In another variant, possibly in combination with one or more of the previous ones, the gripping means is a flexible element elongate, for example of the rope type, strap or flexible handle, fixed at a first end to the first source point.

The first end of the elongate flexible element can then be attached to the first source point by the interior of said article.

Furthermore, the folding assistance means may comprise a first guide element, for example of the textile passing type or rigid ring, adapted to allow the passage of a second end of the elongate flexible element, and disposed at the first target point.

Alternatively to the previous variant, and in combination with the third variant, the gripping means is an elongate flexible element, for example of rope type, strap or flexible handle, fixed at a first end to the first source point and a second end to second source point.

The elongated element can then form one or more loops between its first and second ends, the folding assistance means comprising a first and a second guide element, for example of textile passing type or rigid ring, able to allow the passage of one or one of the loops and arranged respectively at the levels of the first and second target points.

In yet another variant, possibly in combination with one or more of the preceding, the loop is a base loop, and the flexible envelope comprises an opening. The first source point is then placed inside the article opposite the opening, at this base loop.

Alternatively, the loop is an upper loop, and the first source point is disposed outside the article at this upper loop.

In another variant, possibly in combination with one or more of the previous ones, the gripping element, the loop and the flexible envelope, are such that the gripping element is definitively or temporarily integral with the buckle, or with the flexible envelope along this loop, in a succession of points. These points successively constitute source points for the next point in the succession of points, and target points for the preceding point in the succession of points.

The gripping element is then able to allow to successively or simultaneously bring back a source point of the succession of points on its target point, by one or more traction on the gripping element, so as to allow the formation of several sub-elements. loops, possibly in the form of superimposed turns, by a succession of twists of the loop.

The invention also relates, in a second aspect, to a method of folding an article, in particular tent or shelter type.

The article comprises a structure in folding arches in a circular configuration and comprising at least one loop, a flexible envelope integral with the arch structure, and folding assistance means.

These folding assistance means comprise a gripping element attached to a first source point of the loop, or a first source point of the flexible envelope along this loop.

The method includes forming at least two sub-loops from the loop.

To form the two sub-loops, traction is exerted on the gripping element to return the first source point to a first target point of this loop, or a first target point of the flexible envelope along this loop, by sort of actually get the formation of at least two sub-loops by twisting the loop.

In addition, the first target point and the first source point satisfy the following conditions which are cumulative conditions:

a - the distance, measured along the loop, between the first source point and the first target point is greater than or equal to 2.nR _rupt , where R _rup t is the limit radius of curvature of the loop,

b -when the loop has a substantially non-planar shape, with at least one major major axis and at least one minor major axis, the couple {first point source; first target point} is neither on the main and minor axis,

c -when the loop has a substantially flat and oblong shape, with at least one major major axis, the couple {first source point; first target point} is not on the major axis.

The explanations given above relating to the notion of radius of curvature R _rup t, oblong curve, small axis, secondary or main, and major axis, secondary or main, are obviously also applicable to the method according to the invention.

In an alternative embodiment, the gripping element is attached to a second source point of the loop, or to a second source point of the flexible envelope along this loop, and traction is exerted on the gripping element for returning the second source point to a second target point of this loop, or a second target point of the flexible envelope along this loop.

The second target point can be confused with the first target point. In another variant of implementation, possibly in combination with the previous one, the gripping element, the loop and the flexible envelope are such that the gripping element can be fixed permanently or temporarily with the loop, or with the flexible envelope along this loop, in a succession of points.

These points successively constitute source points for the next point in the succession of points, and target points for the preceding point in the succession of points.

One or more tractions are then exerted on the gripping element to bring back successively or simultaneously a source point of the succession of points on its target point, so as to allow the formation of several sub-loops, possibly in the form of superposed turns. , by a succession of twisting of the loop.

Other characteristics and advantages of the invention will appear more clearly and completely on reading the following description of the preferred embodiments, which are given by way of nonlimiting examples and with reference to the following appended drawings:

FIG. 1 schematically represents an example of an arch structure of an article according to the invention,

FIGS. 2a to 2d show schematically examples of loops of the arch structure of an article according to the invention,

FIGS. 3a and 3b schematically represent positions of pairs of source points and target points, on two examples of the loop of the arch structure of an article according to the invention,

- Figures 4 to 7 show schematically the assisted folding method according to the invention in four examples.

- Figures 8 to 12 show schematically and respectively four examples of article according to the invention.

Figure 1 is a schematic representation of the arch structure of an article according to the invention, in an embodiment corresponding to a tent.

Such an arch structure generally comprises a base loop 1, which may be flat or non-planar as shown in Figure 1, surmounted by an upper loop 2 non-planar.

Each loop 1, 2 may consist of a single arch, the arch structure then comprising two separate arches. Alternatively, a single appropriately shaped hoop may constitute both the base loop 1 and the upper loop 2. In yet another case, the hoop structure may comprise two separate hoops, each loop 1, 2 consisting of a portion of one of the arches and a portion of the other arch.

These loops 1, 2 have a shape that can be strictly circular, but which is usually substantially oblong, as actually shown in Figure 1.

It is recalled that a loop 1, 2 is said to be oblong, according to the invention, when it has an elongated circular shape, with at least a small axis al, a2, and at least one major axis Al, A2. Thus, in the example of FIG. 1, the base loop 1 has a major major axis A1 and a minor axis a, and the upper loop 2 has a major axis A2 and a minor axis a2.

Such a substantially oblong shape may be an ellipse as shown in Figure 2a. The plane loop 1, or nonplanar (the representation of FIG. 2a is then the unwinding of the loop 1), then has a single small axis al, or minor axis al, with two opposing vertices s3 and s4 on this minor axis principal al, and a single major axis Al, or major axis Al, with two opposite peaks si and s2 on this major axis A1.

It may also be an elongate circular shape of shape having substantially rectilinear parts, as illustrated in FIGS. 2b and 2c, in which case the loop 1 may have one or more small axes al, al 'and one or several major axes Al, Al '.

Thus, in the example of FIG. 2b, the plane loop 1, or nonplanar (the representation of FIG. 2b is then an unwound of the loop 1), has a single major axis Al, or major axis Al, with two opposite peaks si and s2 on this major axis Al, and several small axes al, al ', with two opposing vertices s3, s3' and s4, s4 'on each of these minor axes al, al', insofar as the loop 1 has two substantially straight sides parallel to the major major axis Al.

Among these small axes al, al ', the minor axis al intersecting the major axis Al perpendicular to the middle of the opposite peaks si and s2, is called the minor axis al. The other minor axes are called secondary minor axes.

Moreover, in the example of FIG. 2c, the plane 1 loop, or not plane

(The representation of FIG. 2c is then an unwrapping of the loop 1), has a single small axis α1, or minor axis α, with two opposite vertices s3 and s4 on this minor axis α, and several major axes A1, Al ', with two opposite peaks si, si' and s2, s2 'on each of these major axes Al, Al', insofar as the loop 1 has two substantially rectilinear sides parallel to the minor minor axis a. Among these major axes Al, Al ', the major axis Al intersecting the small main axis al in the middle of the opposite peaks s3 and s4 is called the main major axis Al. The other major axes Α are called minor secondary axes Al'.

It is obvious that a combination of FIGS. 2b and 2c will give a loop with two substantially rectilinear sides parallel to any one of the minor or major minor axes al, al ', and two other substantially straight sides parallel to any one of the major or minor axes Al, Al ', thus with several small axes al, al' and several small axes Al, Α. Such an overall shape then becomes almost rectangular (possibly square), with the rounded corners.

By substantially oblong shape or loop is also meant a substantially ovoidal loop, as shown in Figure 2d.

In this FIG. 2d, the loop 1 plane, or nonplanar (the representation of FIG. 2d is then an unwound of the loop 1), has a small axis α shifted to the left, or minor axis al, with two opposing vertices. s3 and s4 on this small main axis al, and a large axis Al constituting an axis of symmetry, with two opposing vertices si and s2.

The closer the portion near the vertex if rectilinear, and the more the portions between s3 and s2 of a par and between s4 and s2 are rectilinear, the more the ovoid shape tends to become triangular, with rounded angles.

In the case, not shown in Figure 2d, where the loop 1 would have two substantially straight and parallel portions, then it would have in addition to the major axis Al and / or the main minor axis al, one or more large, respectively small, secondary axes.

Foldable articles according to the invention, of which we will see some examples below with reference in particular to Figures 6 to 9, are characteristic in that they have folding assistance means to facilitate the formation of at least two sub loops from at least one of the curls of the article arch structure.

This formation of the sub-loops is obtained by reducing, via the aid of folding assistance means, a source point on a point target each disposed, directly or indirectly, along one of the loops of the structure.

The source and target points must however form a pair of points satisfying a certain number of cumulative conditions, presented below and with reference to FIGS. 3a and 3b.

Thus, schematically shown in FIG. 3a is a substantially circular loop 1 which may be flat or non-planar (in which case the representation of FIG. 3a corresponds to the unwinding of the loop 1).

To illustrate one of the conditions that the couple must meet (point source; target point}, we have represented on the loop 1 a source point Ps and a series of target points Pc and a point P ₂ , all of which are arranged at a distance, measured along the loop 1 , which is greater than or equal to 2.7iR _rU pt, where R _rup t is the limit radius of curvature of the loop. This distance is indicated by dotted lines along loop 1.

These points Pc and the point P ₂ are all suitable target points for the source point Ps.

On the other hand, the point Pi of FIG. 3A can not constitute a target point for the source point Ps, within the meaning of the invention, since it is arranged on the loop 1 at a distance, measured along the loop 1, which is less than 2 ^ .R _rupt .

It will be recalled once more that the radius of curvature limit R _rup t within the meaning of the invention is the radius of the curvature beyond which the loop is broken, or the loop undergoes a permanent deformation and does not take its shape initial, this limit radius of curvature therefore depending in particular on the nature of the material used for the loop (for example fiberglass, wire or steel cable) as well as the diameter of the flexible rod or rods that can constitute the loop.

Moreover, if FIG. 3a represents the unwinding of a substantially circular non-planar loop 1, the major major axis A1 of the substantially circular non-plane loop 1 is then defined as the axis passing through the two extrema furthest from the plane. tangent to the center of the loop 1, and the small main axis al as the axis perpendicular to Al and located in the plane tangent to the center of the loop 1. In such a case, the pair of points {Pi; P ₂ }, just like the pair of points {? 2; Pi}, can not be couples {point source; target point} within the meaning of the invention, because they are located on the major axis Al.

Similarly, if we consider the two points Pc each located on the minor axis al, they can not be a couple {point source; target point} within the meaning of the invention insofar as they are actually arranged on this minor axis al.

FIG. 3b schematically shows an oblong loop 1, in the particular case of an ellipse thus having a single major axis Al, or major axis Al, and a single minor axis al, or minor axis al, which can be flat, or not planar (in which case the representation of Figure 3b corresponds to the unwinding of the loop 1).

In this case, the pairs {Ps; Pc} corresponding to appropriate source point pairs, target point according to the invention, must satisfy the same condition as that presented above with reference to FIG. 3a, relative to the distance separating them measured along the loop 1.

Thus, starting from the source point Ps situated along the loop 1, on its upper left quarter, all the points Pc are appropriate target points, insofar as they are located on the loop 1 at a distance, measured along of this loop 1, which is greater than or equal to 2.7iR _mp t. This distance is, here again, materialized by dots along the loop 1.

Conversely, always starting from the source point Ps located along the loop 1, on its upper left quarter, the point PI is not an appropriate target point, since it is located on the loop 1 at a distance, measured along this loop 1, which is less than 2.nR _rU pt.

However, besides the condition relating to the distance between the source and target points, measured along the loop, and only in the case of a loop 1 having a substantially planar and oblong shape as defined above, and as represented by way of example in Figure 3b, an additional condition must be satisfied by a couple {source point; target point}.

Indeed, the source point and the target point must not be on the main long axis Al of the loop 1. Thus, in the example of FIG. 3b, the point Pc located on the main long axis Al, and the opposite point (not referenced) on this major axis Al, can not therefore constitute a pair {source point; target point} suitable for the purposes of the invention.

Moreover, in the particular case where the oblong loop 1 shown in FIG. 3b is the unwind of a non-planar loop 1, the pair {source point; target point} must not correspond to the pair formed by the two opposing vertices of the minor axis a, nor correspond to the pair formed by the two opposing vertices of the major axis A1.

Thus, in the case of a non-planar oblong loop 1, the pair illustrated in FIG. 3b, formed by the point P4 located on the top of the minor axis a and by the point P3 located on the opposite peak of this minor axis principal al, can not be a couple {point source; target point} suitable for the purposes of the invention.

Furthermore, also in the case of a non-planar oblong loop 1, the point Pc located on the major axis Al, and the opposite point (not referenced) on this major axis Al, can not constitute a couple {point source ; target point} suitable for the purposes of the invention.

On the other hand, in the case where the oblong, flat or non-planar loop 1, would have, besides its minor axis a, several minor axes Al 'and / or several major secondary axes Al', as illustrated for example in FIG. Figure 2b, then a couple {point source; target point} corresponding to the two opposing vertices of one of the minor secondary axes al 'or one of the major secondary axes, could constitute a pair {point source; target point} within the meaning of the invention, provided that the minor secondary axis al 'considered is clearly distinct from the main minor axis al, or that the major axis secondary Al' considered is clearly distinct from the major major axis Al.

One of the reasons for the existence of these two exceptions presented above, one specific to a non-planar loop, and the other specific to an oblong and flat loop, in addition to the condition relating to the minimum distance between the source point and the target point, and linked to the difficulty, if not the impossibility, of obtaining the desired twisting of the loop, even if the condition relating to the minimum distance between the two points presented above would be satisfied. It will be specified that, by non-planar, circular or oblong curve, one generally means, but not limited to such curves, curves having at least one axis (large or small in the case of an oblong curve) rectilinear, a plane tangent to the center of the curve and passing through this rectilinear axis, and at least two extrema corresponding to the points of the curve farthest from the plane tangent to the center of the curve.

Thus, in the case of an oblong curve, such non-planar curves are illustrated in FIG.

For the oblong curve 1 corresponding to the base loop 1, the minor axis is rectilinear, intended to rest on the ground which forms the plane tangent to the center of the curve, and the major axis Al is curvilinear and passes through both extrema corresponding to the two points furthest from the ground.

For the oblong curve 2 corresponding to the upper loop 2, the minor axis a2 is rectilinear, intended to form the top of the tent, with a plane tangent to the center of the curve, and the major axis A2 is curvilinear and passes through both extrema corresponding to the two points furthest from the tangent plane.

FIGS. 4 and 5 show diagrammatically the assisted folding method according to the invention, in two examples.

As already indicated with reference to FIG. 1, and as will be seen more specifically with reference to the examples of articles represented in FIGS. 6 to 9, an arch structure often comprises several loops. In this case, the method according to the invention applies separately to each of the loops, or to a virtual loop formed by the superposition of the loops.

The superposition of the loops is carried out initially, before the implementation of the method for forming two sub-loops, or simultaneously during this process.

Finally, in the case where the structure actually comprises several loops brought back or superimposed on one another before folding or during folding, we will talk about the formation of two virtual sub-loops from a single virtual loop . But it is clear that each virtual sub-loop then corresponds to the superposition of several sub-loops, in the same way that the unique virtual loop of departure corresponds to the superposition of several loops.

For simplicity, the process is therefore illustrated by schematic representations on which there is a single loop, whether it is a single loop or a superposition of loops.

Thus, in the example shown in FIG. 4, the arch structure comprises a non-planar oblong loop 1 on which a source point 5a and a target point 6 which satisfy the conditions presented above are materialized.

A gripping element 5 is fixed at its end 5a to the source point

5a. This gripping element 5 takes the form of an elongate flexible element 5, for example a rope 5. It could also be a strap or a simple flexible handle.

By pulling on this gripping element 5, the user will be able to bring the source point 5a of the loop 1 onto the target point 6 of this same loop 1.

To facilitate the operation, it is possible to provide a marker 6 at the target point 6, in order to give a precise indication to the user of the point to which the source point 5a must be brought back.

It is also possible to provide additional means of the guiding element type 6 (always referenced 6 in FIG. 4 for the sake of simplification) arranged at the target point 6, in which the gripping element 5 is inserted permanently or temporarily, ring type or passing guide for example.

From the representation (a) of Figure 4, the user pulls on the gripping member 5, preferably maintaining the loop 1, with the foot or the hand.

This operation has the effect of initiating the flap of the source point 5a to the target point 6, as shown in the representation (b) of Figure 4. As indicated by the curved arrows on this representation, the loop 1 then begins to twist, at the portions 100 and 101 of the loop 1 between the source points 5a and 6. By continuing the traction on the gripping element 5, the source point 5a continues to fall back towards the target point 6, and the twisting continues, so that the configuration illustrated in the representation (c) of FIG. FIG. 4, with formation of the two sub-loops 1a and 1b.

Precisely, twisting is materialized by the inversion of portions 100 and

101 of the loop 1, forming the sub-loop la. The remaining portion of the loop 1 forms the sub-loop 1b.

Insofar as, initially, as illustrated in the representation (a) of FIG. 4, the source points 5a and 6 are diametrically opposed, the two sub-loops 1a, 1b obtained are substantially symmetrical and of the same perimeter. as shown in (c).

In the example shown in FIG. 5, the arch structure also comprises a non-planar oblong loop 1, on which two source points 5a, 5b and a target point 6 are shown, the pair {source point 5a; target point 6} and the pair {source point 5b; target point 6} satisfying the conditions presented above.

The gripping element 5 is fixed at its end 5a to the source point 5a and at its other end 5b to the source point 5b.

This gripping element 5 again takes the form of a slender flexible element 5, for example a rope 5. It could also be a strap or a simple flexible handle.

By pulling on this gripping element 5, at the level of the loop 12, the user will be able to bring the source point 5a of the loop 1 onto the target point 6 of this same loop 1, and, at the same time, the source point 5b of the loop 1 on the same target point 6.

Again, to facilitate the operation, provision may be made to have a marker 6 at the target point 6, in order to give a precise indication to the user of the point to which the source points 5a and 5b must be brought back.

It is also possible to provide an additional means of the guiding element type 6 (always referenced 6 in FIG. 5 for the sake of simplification) arranged at the target point 6, in which the gripping element 5 is inserted permanently or temporarily, such as ring or guiding passing.

Note that one could equally well have two distinct gripping elements, each fixed at one of their ends respectively to the source points 5a and 5b, and with their opposite free ends on which the user will shoot.

From the representation (a) of Figure 5, the user pulls on the gripping element 5 through its loop 12, preferably maintaining the loop 1, with the foot or hand.

This operation has the effect of initiating the flap of the source points 5a and 5b towards the target point 6, as illustrated in the representation (b) of FIG. 5. As indicated by the curved arrows on this representation, the loop 1 then starts to twist, at the portions 100, 101 and 102 of the loop 1 between the source point 5a and the target point 6 on the one hand, and between the source point 5b and the target point 6 on the other hand.

By continuing the traction on the gripping element 5, the source points 5a and 5b continue to fall back towards the target point 6, and twisting continues, so that the configuration illustrated in FIG. ) of Figure 5, with formation of the three sub-loops la, lb and the.

Precisely, twisting is materialized by the inversion of portions 100 and

101 on the one hand, and portions 100 and 102 on the other hand, of the loop 1. The portion 101 and a portion of the portion 100 form the sub-loop la. The portion 102 and the other portion of the portion 100 form the sub-loop 1b. The remaining portion of the loop 1 forms the sub-loop 1c.

In this example, the two source points 5a and 5b are disposed substantially at the vertices of the major axis of the non-planar oblong loop 1 corresponding to the two highest points. Moreover, the target point 6 is disposed substantially at one of the vertices of the minor axis of the non-planar oblong loop 1 corresponding to one of the two lowest points.

In this way, we obtain three sub-loops la, lb, the. Given the initial positioning of the points 5a and 5b on the loop 1 in the representation (a), the sub-loop has a perimeter of the order of half of the perimeter of the loop 1, and the two sub-loops la and lb have a substantially identical perimeter, of the order of a quarter of the perimeter of the loop 1. The perimeter of the loop is therefore of the order of twice the perimeter of the loops 1a, 1b.

Preferably, as illustrated in FIG. 6, the source points 5a, 5b are chosen rather so that the three sub-loops 1a, 1b have it substantially the same perimeter, ie one third of the perimeter of the loop 1, and are substantially symmetrical with each other. To do this, these source points 5a, 5b can be respectively positioned at one-third of the distance between one of the vertices of the main major axis of the loop 1 and one of the vertices of the minor axis of the loop 1, the target point 6 being then at the opposite vertex of the minor axis of loop 1.

Thus, in the example shown in FIG. 6, the arch structure also comprises a non-planar oblong loop 1 on which two source points 5a, 5b and a target point 6 are shown, the pair {source point 5a; target point 6} and the pair {source point 5b; target point 6} satisfying the conditions presented above.

It is also possible to provide additional means of the guiding element type 6 (still referenced 6 in FIG. 6 for the sake of simplification) disposed at the target point 6, wherein the gripping element 5 is inserted permanently or temporarily, such as ring or guiding.

From the representation (a) of Figure 6, the user pulls on the gripping element 5 through its loop 12, preferably maintaining the loop 1, with the foot or hand.

This operation has the effect of initiating the flap of the source points 5a and 5b towards the target point 6, as shown in the representation (b) of FIG. 6. As indicated by the curved arrows on this representation, the loop 1 then starts to twist, at the portions 100, 101 and 102 of the loop 1 between the source point 5a and the target point 6 on the one hand, and between the source point 5b and the target point 6 on the other hand.

By continuing the traction on the gripping element 5, the source points 5a and 5b continue to fall back towards the target point 6, and twisting continues, so that the configuration illustrated in FIG. ) of Figure 6, with formation of the three sub-loops la, lb and the.

Precisely, twisting is materialized by the inversion of the portions 100 and 101 on the one hand, and portions 100 and 102 on the other hand, of the loop 1. The portion 101 and a portion of the portion 100 form the sub-portion. loop the. The portion 102 and the other portion of the portion 100 form the sub-loop 1b. The remaining portion of the loop 1 forms the sub-loop 1c.

In this example, the two source points 5a and 5b are disposed substantially at one-third of the distance between one of the vertices of the major axis and one of the apices of the minor axis of the non-planar oblong loop 1. Moreover, the target point 6 is disposed substantially at one of the vertices of the minor axis of the non-planar oblong loop 1 corresponding to one of the two lowest points. In this way, three sub-loops 1a, 1b are obtained, with substantially the same perimeter corresponding to one third of the perimeter of the loop 1.

FIG. 7 illustrates another example of folding method according to the invention, from a starting structure similar to the starting structure described in the preceding example with reference to FIG. 6, and more particularly to the representation (FIG. a) of this figure 6.

Thus, the arch structure shown in FIG. 7 comprises a non-planar oblong loop 1 on which two source points 5a, 5b and a target point 6 are shown, the pair {source point 5a; target point 6} and the pair {source point 5b; target point 6} satisfying the conditions presented above.

The gripping element 5 is, here again, fixed at its end 5a to the source point 5a and at its other end 5b to the source point 5b.

This gripping element 5 thus takes the form of an elongate flexible element 5, for example a rope 5, and could consist of or comprise a strap or a simple flexible handle.

By pulling on this gripping element 5, at the level of the loop 12, the user brings the source point 5a of the loop 1 onto the target point 6 of this same loop 1, while also bringing back the source point 5b of the loop. 1 on the same target point 6.

As in the examples described above, to facilitate the operation, it is possible to provide a marker 6 at the target point 6, in order to give a precise indication to the user of the point to which the source points 5a and 5b must be brought back.

It is also possible to provide additional means of the guiding element type 6 (still referenced 6 in FIG. 7 for the sake of simplification) arranged at the target point 6, in which the gripping element 5 is inserted permanently or temporarily, ring type or passing guide for example.

One could also have two distinct gripping elements, each fixed at one of their ends respectively to the source points 5a and 5b, and with their opposite free ends on which the user will shoot. From the representation (a) of Figure 7, the user pulls on the gripping element 5 through its loop 12.

This operation has the effect of initiating the flap of the source points 5a and 5b towards the target point 6, as illustrated in the representations (b) and (c) of FIG. 7.

However, although starting from an identical configuration, the twisting and formation of the sub-loops does not take place in this example in the same way as in the example previously illustrated in FIG. 6.

Indeed, in this example, the portion of the loop 1 located between the points 5a and 5b and opposite the point 6, which ultimately forms the sub-loop as illustrated in the representation (d), passes under the portion 100 of the loop 1 corresponding to the vicinity of the point 6. This is illustrated in particular in the representation (c) of Figure 7.

When the approximation of the respective points 5a and 5b to the point 6 ends, this portion of the loop 1 located between the points 5a and 5b and opposite the point 6, is twisted to form the sub-loop.

Although the points 5a, 5b and 6 are supposed to be substantially superimposed on the basis of these operations, they have been shown distinctly in the representation (d) of FIG. 7, in order to illustrate the reversal of the position. points 5a and 5b with respect to point 6 taking into account twisting.

Finally, the portion 101 and part of the portion 100 form the sub-loop la, the portion 102 and the other portion of the portion 100 form the sub-loop 1b, and finally, the remaining portion of the loop 1 form the sub-loop the.

As in the previous example, the two source points 5a and 5b are disposed substantially at one-third of the distance between one of the vertices of the major axis and one of the apices of the minor axis of the non-planar oblong loop 1. Moreover, the target point 6 is disposed substantially at one of the vertices of the minor axis of the non-planar oblong loop 1 corresponding to one of the two lowest points.

In this way, we also obtain three sub-loops la, lb, the substantially same perimeter corresponding to one third of the perimeter of the loop 1. It should be noted that the three examples illustrated in FIGS. 5 to 7 do indeed provide for a single target point 6 for two source points 5a and 5b, but it would equally well have been possible to provide two distinct target points. The result would then have been three sub-loops also, not symmetrical and of different perimeters.

Figures 8 to 12 show schematically and respectively four examples of article according to the invention, tent type.

In the example of Figure 8, the tent has an arch structure similar to that described with reference to Figure 1, except for the base loop 1 which is flat.

Thus, the tent comprises a flexible envelope 3, 4 comprising for example several textile panels 3, 4 integral with the arch structure comprising the base loop 1 and the upper loop 2.

A gripping element 5 is disposed inside the tent, which takes the form of a first strap connecting the point 5a to the base loop 1 and the point 21 on the upper loop 2, which extends into a looped strap.

The gripping element 5 is either directly integral with the loop 1, at the point 5a, or directly integral with the flexible envelope 3, 4, at the point 5a. In the second case, the gripping element 5 can actually be connected, for example by sewing, to a flexible sheath integral with the flexible envelope 3, 4 and in which the base loop 1 is inserted.

Diametrically opposed to the point 5a, there is a point 6 at the base loop 1. The user can then implement the method according to the invention, as explained in particular with reference to Figure 4.

It can be provided that the point 6 is equipped with a loop 6 in which the user will pass the free end of the gripping element 5, while pulling on this gripping element 5.

Continuing to pull the gripping element 5, the user returns the point 5a of the base loop 1, together with the point 21 of the upper loop 2, to the point 6 of the base loop 1, to form two sub-loops from the base loop 1, but also from the upper loop 2 due to the traction exerted on the point 21 on this upper loop 2. In this embodiment, by continuing the traction to the end, in particular because of the spring effect of the rods of the arch structure 1, 2 curved mounted prestressed with the flexible envelope 3, 4, the two sub-loops previously trained tend to fall back automatically on each other.

This configuration therefore makes it possible, in the folding process of such a tent, to go beyond the basic step of forming two sub-loops from a loop, to the superposition of the two sub-loops. - loops which is the final goal especially for reducing congestion.

Still in this configuration, once the two sub-loops are superimposed, the user can surround, with the strap 5 forming a part of the gripping element 5, the flat disk formed by the two superposed sub-loops, then move from again the strap 5 in a loop located at a point 7 of the base loop 1.

Specific marking may be provided for points 6 and 7, for example color marking and / or numbering, to facilitate the implementation of the method by a user.

By then pulling on the strap 5, the user again implements the method of the invention as illustrated in FIG.

The last two sub-loops thus formed can be brought back to one another manually by the user, and then held together again by means of the strap 5.

The flat disk thus obtained by superimposing said sub-loops has a perimeter substantially equal to a quarter of the perimeter of the loops 1, 2 of the arch structure.

Thus, point 5a and point 6 constitute a pair {source point; target point} within the meaning of the invention, meeting the conditions set out above. Similarly, once the first two sub-loops formed and superimposed, point 6 and point 7 also constitute a pair {source point; target point} within the meaning of the invention, meeting the conditions set out above.

In the example of Figure 9, there is a tent with an arch structure identical to that of Figure 8. Thus, the tent also comprises a flexible envelope 3, 4 comprising for example several textile panels 3, 4, integral with the arch structure comprising the base loop 1 and the upper loop 2.

In this example, the gripping element 5 is still disposed inside the tent, but takes the form of a strap connecting firstly the point 5a on the base loop 1 and the point 17 on the upper loop 2, then the point 18 on the upper loop 2, diametrically opposite the point 17, and finally the point 6 on the base loop 1, diametrically opposite the point 5a.

Here again, the gripping element 5 is either directly integral with the loop 1, at the point 5a, or directly integral with the flexible envelope 3, 4, at the point 5a. In the second case, the gripping element 5 can actually be connected, for example by sewing, to a flexible sheath integral with the flexible envelope 3, 4 and in which the base loop 1 is inserted.

In other words, in this example as in the previous and the following, the points in question may equally well be physically arranged on the loop 1, 2 concerned, or on the flexible envelope 3, 4 (this envelope possibly comprising passage sleeves loops 1, 2) along the loop 1, 2 concerned.

The user can implement the method according to the invention, as explained in particular with reference to FIG. 4.

By pulling on the gripping element 5, for example by means of a ring 12 positioned at the free end of this gripping element 5, or of a loop 12 formed at the free end of this gripping element 5, the user returns the point 5a of the base loop 1, together with the point 17 of the upper loop 2, to the point 6 of the base loop 1, at the same time as the point 18 of the upper loop 2, to form two sub-loops from both the base loop 1 and the upper loop 2.

In this embodiment, due in particular to the spring effect of the rods of the arch structure 1, 2 curved mounted prestressed with the flexible envelope 3, 4, the two previously formed sub-loops tend to fall back automatically l one on the other. As in the example of FIG. 8, this configuration therefore makes it possible to go beyond the basic step of forming two sub-loops from one loop to the superposition of the two sub-loops. loops which is the ultimate goal especially for reducing congestion.

Still in this configuration, once the two sub-loops are superimposed, the user can again pass the strap 5 in passers located successively at point 7 of the base loop 1, at point 19 of the upper loop 2, at point 20 of the upper loop 2 and at point 8 of the base loop 1.

The last two sub-loops thus formed can be brought back to one another manually by the user, and then held together by means of the strap 5.

Here again, the flat disc thus obtained by superimposing said sub-loops has a perimeter substantially equal to a quarter of the perimeter of the loops 1, 2 of the arch structure.

Thus, the pairs of points 5a and 6, and 17 and 18, each constitute couples {point source; target point} within the meaning of the invention, meeting the conditions set out above. Similarly, once the first two sub-loops formed and superimposed, the pairs of points 7 and 8, and 19 and 20, also constitute pairs {point source; target point} within the meaning of the invention, meeting the conditions set out above.

The example of FIG. 10 constitutes a third example of an article of tent type with an arch structure identical to that of FIGS. 8 and 9.

Thus, the tent also comprises a flexible envelope 3, 4 comprising for example several textile panels 3, 4, integral with the arch structure comprising the base loop 1 and the upper loop 2.

In this example, the gripping element 5 is a simple rope 5 disposed this time outside the tent. This rope 5 is connected at a point 5a of the upper loop 2. Other important points are shown in Figure 8, which are preferably marked, for example by a number and / or a specific color, to facilitate the implementation of the method by the user.

Thus, a point 13 is located on the base loop, approximately under point 5a, and point 6 is located on the base loop 1, diametrically opposite point 13.

A point 14 is located on the upper loop 2, approximately above the point 6, and a point 15 is also located on the upper loop 2, symmetrical with the point 5a with respect to the major axis of the upper loop 2.

A point 7 is located on the base loop 1, approximately under the point 15, and a point 8 is disposed on the base loop 1, diametrically opposite the point 7.

A point 16 is located on the upper loop 2, approximately above the point 8, and a point 9 is also located on the upper loop 2, coinciding with or near the point 5a.

Here again, the gripping element 5 is either directly integral with the base loop 1 or the upper loop 2, at the different points, or directly integral with the flexible envelope 3, 4, at these points. , for example connected to a flexible sheath of the flexible envelope 3, 4 in which is inserted the loop concerned.

All these points are provided with a passer or the like, to facilitate the implementation of the method.

The user can therefore implement the method according to the invention, as explained in particular with reference to FIG. 4.

Thus, the user first passes the rope 5 in the passers of the points

13, 6 and 14, from the outside of the tent, then pull on the rope 5

By pulling on the rope 5, the user brings back the point 5a of the upper loop 2 towards the point 14 of this upper loop 2, at the same time as the point 13 of the base loop 1 towards the point 6 of this loop of base 1.

Due in particular to the spring effect of the rods of the arch structure

1, 2 prestressed curved risers with the flexible casing 3, 4, both Previously formed loops tend to fall back on one another automatically.

Therefore, as in the examples of FIGS. 8 and 9, this configuration makes it possible to go beyond the basic step of forming two sub-loops from one loop, to the superposition of the two sub-loops. - loops which is the final goal especially for reducing congestion.

Once the two sub-loops have been superimposed, the user can again pass the rope 5 in the loops successively located at the point 15 of the upper loop 2, at the point 7 of the base loop 1, at point 8 of the base loop 1, at point 16 of the upper loop 2, and finally at point 9 of the upper loop 2.

Then pulling sufficiently on the rope 5, the user performs again the method of the invention as shown in Figure 4.

The last two sub-loops thus formed can be brought back to one another manually by the user and then held together by means of the rope 5.

Thus, the pairs of points 5a and 14, and 13 and 6, each constitute couples {source point; target point} within the meaning of the invention, meeting the conditions set out above. Similarly, once the first two sub-loops formed and superimposed, the pairs of points 15 and 16, and 7 and 8, also constitute couples {source point; target point} within the meaning of the invention, meeting the conditions set out above.

FIG. 11 schematically represents another example of a folding article, of tent type, according to the invention, with a folding method of the type of that described with reference to FIG. 6 or FIG.

This tent also comprises a flexible envelope 3, 4 which itself comprises for example several textile panels 3, 4, integral with an arch structure comprising a substantially flat base loop 1, and the upper loop 2 non-planar. The gripping element 5 is similar to that described briefly with reference to FIGS. 6 and 7. It is a rope 5 connected by a first end to a point 5a of the upper loop 2, and by a second end in a point 5b of this upper loop 2.

The points 5a and 5b are disposed substantially at one-third of the distance between one of the apices of the major axis and one of the apices of the minor axis of the upper loop 1 of non-planar oblong shape.

The rope 5, starting from point 5a, passes in a loop 11 at a point 23 located on the base loop 1. The rope 5, starting from point 5b, passes in a loop 11 at a point 22 located on the base loop 1.

The points 22 and 23 are disposed substantially at one-third of the distance between one of the apices of the major axis and one of the apices of the minor axis of the plane oblong base loop 1.

From the points 22 and 23 respectively, the rope 5 joins the point 6 located on the base loop 1, at one of the vertices of the minor axis of this base loop 1.

In this point 6, the rope 5 also passes in a loop 11 or the like, and forms a loop 12 facilitating the grip by the user.

The user can therefore implement the method according to the invention, as explained in particular with reference to FIG. 6 or FIG.

Thus, by exerting traction on the rope 5 via the loop 12, the point 5a and the point 23 on the one hand, and the point 5b and the point 22 on the other hand, are first brought back One against the other.

By continuing the traction on the rope 5, the twisting and the formation of the three sub-loops represented in FIG. 6 or in FIG. 7 are obtained.

In this configuration, once the point 5a has returned to the point 23, these two points are considered as confused on a virtual loop corresponding to the superposition of the upper loops 2 and base 1. Similarly, once the point 5b returned to the point 22, these two points are considered as merged on a virtual loop corresponding to the superposition of the upper loops 2 and base 1.

Thus, the pairs of points {5a (or 23); 6}, and {5b (or 22); 6} constitute each pair {source point, target point} within the meaning of the invention, satisfying the conditions stated above.

A flat disc is thus obtained, by superposition of the sub-loops, having a perimeter substantially equal to one third of the perimeter of the loops 1, 2 of the arch structure.

Figure 12 shows schematically another example of folding article, tent type, according to the invention.

This tent comprises, as in the previous examples, a flexible envelope 3, 4 which itself comprises, for example, several textile panels 3, 4, integral with an arch structure comprising a substantially plane base loop 1, and the loop upper 2 not flat.

The gripping element 5 is similar to that described above. This is for example a rope 5. This rope 5 is connected by a first end at a point 23 of the base loop 1, can pass at the points 5a and 5b of the upper loop 2, by another point 22 of the base loop 1, before passing to a last point 6 of the upper loop 2.

Point 6 is located at one of the vertices of the minor axis of the base loop 1.

The rope 5 can pass through the various points listed above by means of a passer system similar to the passer system 11 described above with reference for example to FIG. 11. At point 6, the rope 5 can form a loop similar to the loop 12 described above with reference for example to Figure 11, to facilitate the grip by the user.

The user can then implement the folding method according to the invention, as explained below.

Thus, by pulling on the rope 5, the point 23 and brought back to the point 5a, while the point 5b is brought to the point 22 almost simultaneously.

By continuing the traction on the rope 5, the points 5b and 22, brought back towards one another, are brought back to the point 6.

Finally, the points 5a and 23, brought back towards one another, are brought back to the points 5b, 22, 6.

The twisting and the formation of the three desired sub-loops are thus obtained.

As has been explained with respect to the preceding examples, once the point 5 has returned to the point 23, these two points are considered as merged on a virtual loop corresponding to the superposition of the upper loops 2 and base 1. Similarly, a once the point 5b brought back to the point 22, these two points are considered as merged on a virtual loop corresponding to the superposition of the upper loops 2 and base 1.

A flat disc is thus obtained, by superposition of the sub-loops formed by twisting during folding, this flat disc having a perimeter substantially equal to one third of the perimeter of the loops 1, 2 of the arch structure. One can provide, whatever the embodiment, to use locking means, able to maintain the folded structure in an intermediate state, without the user needs to exert any force for this maintenance.

This is particularly useful in configurations in which a succession of several points is provided, and / or when the dimensions of the structure are important.

These blocking means are for example located near the points of the source point succession, target point, and are preferably implemented automatically when a source point is brought to a target point.

It can thus be loop-hook or male-female hooking system, one being located near the source point and the other near the target point, which cooperate by hooking, clipping or other, to obtain the desired maintenance.

These locking means may also consist of one or more non-return type blocking elements, or one or more blocking cleats, fixed on the structure, through or through which the folding assistance means passes.

Finally, it will be recalled that the examples given above are not limiting of the invention, and serve only to illustrate some embodiments of a folding article according to the invention, and to implement the folding method of the invention. the invention.

Other configurations are possible, with in particular successions of source points, different target points, facilitating more or less the implementation of the folding process, allowing or not to perform several steps in one.

The common point between all these possible configurations and the existence of a folding assistance means consisting of a gripping element and at least one pair {source point; target point} satisfying the conditions set out above.

Moreover, the examples of circular shapes presented are also not limiting of the invention. It has indeed been presented above, for example, shapes that are strictly circular, that is to say without substantially portion straight. They can also be circular in pieces, that is to say with one or more substantially rectilinear portions.

They can also be strictly oblong or elongated circular (classically oblong, ellipsoidal, ovoidal, etc.), that is to say without substantially rectilinear portions, or oblong in pieces or circular pieces, that is to say with one or more substantially rectilinear portions.

Finally, although only tent type articles are illustrated above by way of example, the invention extends to other items with flexible arch structures, such as shelters or gaming devices.

Claims

Collapsible article, in particular of the tent or shelter type, comprising a folding arch structure (1, 2) in a circular configuration and comprising at least one loop (1, 2), a flexible envelope (3, 4) integral with the arch structure (1, 2), and folding assistance means (5, and 6 to 10),

characterized in that the folding assistance means (5, and 6 to 10) comprise at least one gripping element (5) attached to a first source point (5a) of the buckle (1, 2) or the flexible envelope (3, 4) along the loop (1, 2), and adapted to allow, by traction on the gripping element (5), to bring the first source point (5a) towards a first target point (6 to 10) of the loop (1, 2) or the flexible envelope (3, 4) along the loop (1, 2), the first target point (6 to 10) and the first source point ( 5a) meeting the following cumulative conditions:

a- the distance, measured along the loop (1, 2), between the first source point (5a) and the first target point (6 to 10) is greater than or equal to 2.7i.Rru _P t, where R _m pt is the limit radius of curvature of the loop (1, 2), b- when the loop (1, 2) has a substantially non-planar shape, with at least one major major axis (Al, A2) and at least one small main axis (a1, a2), the pair {first source point (5a); first target point (6 to 10)} is neither on the major major axis (Al, A2), nor on the minor axis (al, a2),

c- when the loop (1, 2) has a substantially flat and oblong shape, with at least one major major axis (Al, A2), the couple {first source point (5a); first target point (6 to 10)} is not on the major major axis (Al, A2),

so as to allow the formation of at least two sub-loops (1a, 1b, 1c) by twisting said loop (1, 2).

2. Article according to claim 1, characterized in that the gripping means (5) is attached by stitching on the flexible envelope (3, 4), directly or via a seam on an intermediate textile piece such as a sleeve in which is inserted the loop (1, 2).

3. Article according to any one of claims 1 and 2, characterized in that the folding assistance means (5, and 6 to 10) comprise a marker (6 to 10) disposed at the first target point (6). to 10).

4. Article according to any one of claims 1 to 3, characterized in that the gripping element (5) is attached to a second source point (5b) of the loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2), this gripping element (5) being adapted to allow to bring back the second source point (5b) to a second target point (6 to

10) of the loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2), by pulling on the gripping element (5).

5. Article according to claim 4, characterized in that the first and second target points (6 to 10) are merged.

6. Article according to any one of claims 1 to 5, characterized in that the gripping means (5) is an elongated flexible element (5), for example of the rope type, strap or flexible handle, fixed at a first end at the first source point (5a).

7. Article according to claim 6, characterized in that the first end of the elongated flexible element (5) is fixed to the first source point (5a) by the interior of said article.

8. Article according to any one of claims 6 and 7, characterized in that the folding assistance means (5, and 6 to 10) comprise a first guide member (11), for example of textile passing type or rigid ring, adapted to allow the passage of a second end of the elongated flexible element (5), and disposed at the first target point (6 to 10).

9. Article according to any one of claims 4 and 5, characterized in that the gripping means (5) is an elongated flexible element (5), for example of the rope type, strap or flexible handle, fixed at a first end at the first source point (5a) and at a second end at the second source point (5b).

10. Article according to claim 9, characterized in that the elongate element (5) forms one or more loops (12) between its first and second ends, and in that the folding assistance means (5, and 6 to 10) comprise a first and a second guide element (11), for example of textile passing type or rigid ring, adapted to allow the passage of said or one of said loops (12) and arranged respectively at the levels of the first and second target points (6 to 10).

11. Article according to any one of claims 1 to 10, characterized in that the loop (1, 2) is a base loop (1), in that the flexible envelope (3, 4) comprises an opening , and in that the first source point (5a) is disposed inside said article opposite said opening, at this base loop (1).

12. Article according to any one of claims 1 to 10, characterized in that the loop (1, 2) is an upper loop (2), and in that the first source point (5a) is arranged outside said article at this upper loop (2).

13. Article according to any one of claims 1 to 12, characterized in that the gripping element (5), the loop (1, 2) and the flexible envelope (3, 4) are such that the gripping element (5) is definitively or temporarily fastenable with the loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2), in a succession of points (5a, and 6 to 10) successively constituting source points for the next point in said succession of points (5a, and 6 to 10) and target points for the preceding point in said succession of points (5a, and 6 to 10), gripping element (5) being adapted to allow to successively or simultaneously bring back a source point of said succession of points (5a, and 6 to 10) on its target point by one or more traction on the gripping element (5) , so as to allow the formation of several sub-loops, possibly in the form of superimposed turns, by a succession of vri the loop (1, 2).

14. A method of folding an article, in particular of the tent or shelter type, comprising a folding arch structure (1, 2) in a circular configuration and comprising at least one loop (1, 2), a flexible envelope (3, 4) integral with the arch structure (1, 2), and folding assistance means (5, and 6 to 10), the folding assistance means (5, and 6 to 10) having a folding element gripper (5) attached to a first source point (5a) of the loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2), said method consisting in particular in forming at minus two sub-loops (1a, 1b, 1c) from the loop (1, 2),

characterized in that to form said two sub-loops (1a, 1b, 1c), traction is exerted on the gripping member (5) to return the first source point (5a) to a first target point (6-10). ) of this loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2), the first target point (6 to 10) and the first source point (5a) satisfying the following cumulative conditions:

a- the distance, measured along the loop (1, 2), between the first source point (5a) and the first target point (6 to 10) is greater than or equal to 2. .R _mp t, where R _rup t is the limit radius of curvature of the loop (1, 2),

b- when the loop (1, 2) has a substantially non-planar shape, with at least one major major axis (Al, A2) and at least a minor axis (al, a2), the pair {first source point (5a ); first target point (6 to 10)} is neither on the major major axis (Al, A2), nor on the minor axis (al, a2),

so as to obtain the formation of said two sub-loops (1a, 1b, 1c) by twisting the loop (1, 2).

15. The method of claim 14, the gripping element (5) being attached to a second source point (5b) of the loop (1, 2) or the flexible envelope (3, 4) along this loop. (1, 2), characterized in that traction is exerted on the gripping element (5) to return the second source point (5b) to a second target point (6 to 10) of this loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2).

16. The method of claim 15, characterized in that the second target point (6 to 10) coincides with the first target point (6 to 10).

The method according to any one of claims 14 to 16, the gripping element (5), the loop (1, 2) and the flexible envelope (3, 4) being such that the gripping element ( 5) can be fixed permanently or temporarily with the loop (1, 2) or the flexible envelope (3, 4) along this loop (1, 2), in a succession of points (5a, and 6 to 10). ) successively constituting source points for the next point in said succession of points (5a, and 6 to 10) and target points for the preceding point in said succession of points (5a, and 6 to 10), characterized in that one or more tractions are exerted on the gripping element (5) to successively or simultaneously bring back a source point of the succession of points (5a, and 6 to 10) on its target point, so as to allow the formation of several sub-loops, possibly in the form of superimposed turns, by a succession of twisting of the loop (1, 2).