FR2957962A1 - Folding article i.e. tent, has secondary loops with ends that are mobile along main upper and lower loops to pass from one configuration to another configuration and to form secondary volume, and envelopes integrated to arch structures - Google Patents

Abstract

The folding article has flexible envelopes (5-8) integrated to arch structures that comprise a main upper loop (1), a main lower loop and secondary loops (3) to form a main volume with a part of the flexible envelopes. The secondary loops are arranged on a portion in a partially deployed configuration. Ends (3a, 3b) of the secondary loops are mobile along the main upper and lower loops to pass from one configuration to another configuration and to form a secondary volume. A support unit deploys the secondary loops, and comprises a flexible slender element i.e. cord, and a hole.

Description

-1- FOLDING ARTICLE WITH EXTENSION

The present invention relates to the field of articles which comprise an arch structure supporting a flexible envelope secured to this arch structure, and which are foldable from an extended use position to a folded storage position. This invention finds particular application folding items tent type, shelter, ball game device. 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 an arc, forming open or closed loops. These flexible elements may for example be constituted by flexible rods with elastic return, in particular formed of rods of composite material or metal or plastic, said rods being optionally connected to each other. Generally, such articles have a main volume, intended to receive objects or people, formed by the arch structure and the flexible envelope.

When it is desired to increase the volume of the article to enlarge the space able to accommodate objects or persons, an extension may be added to the article, forming a secondary volume that communicates with the main volume or is separated from this one by a panel so as to form a secondary chamber.

Such an extension may be completely covered with a part of the flexible envelope, in which case the secondary volume formed by this extension is a closed volume, with the exception of the junction with the main volume in the case where the two volumes communicate. . Such an extension may also be covered only in its upper part, and possibly part of its sides, in which case the secondary volume formed by this extension is an open volume to the outside. We find for example such a configuration in the case of a tent with a canopy. To obtain such an extension, it is necessary to add to the main structure in arches, formed of one or more main loops, a secondary portion formed of one or more secondary loops. These secondary loops must then be mounted and disassembled separately during unfolding and folding of the article, which is particularly troublesome in the case of self-deployable articles, such as the so-called "pop'up" tents, since this makes lose some of the simplicity of assembly and disassembly related to the self-deployable character. Such secondary loops can be assembled to the main structure so as to complicate as little as possible the assembly and disassembly operations. Thus, the secondary loops are arranged so that, in the folded configuration, they are found against the main structure, and in the deployed configuration, they are removed from the main structure with the possible exception of their ends which remain assembled to the main structure. This type of configuration can be found, for example, whether it is self-expanding or non-deployable articles, in the documents FR 2 886 962, EP 0 401 398, US 5 301 705, US 5 467 794, US 6 In addition to the fact that these solutions remain complex to assemble and disassemble, they also have the disadvantage of reducing the extension to a limited volume. Indeed, one of the elements that conditions the secondary volume under extension is the length of the secondary loop in deployed configuration. However, if one wants to reduce the size in folded configuration, and facilitate the folding, it is necessary to limit the length of the secondary loop so that it comes easily superimpose itself to one of the loops of the main structure 30 for folding.

The object of the present invention is to solve the aforementioned problems, by proposing an article, in particular of the tent, shelter or ball game device type, preferably, but not necessarily, self-expanding, having a volume enlarged by an extension, but whose size, in the folded storage position, remains reduced and is easy to fold and deploy. The object of the invention thus relates to a collapsible article, for example tent type, comprising an arch structure and a flexible envelope integral with this arch structure. The arch structure comprises on the one hand a main structure in 10 arches and on the other hand a secondary structure in arches. The main structure in arches is able to form with at least a portion of the flexible envelope a main volume, and the secondary structure in arches is able to form with at least a portion of the envelope a secondary volume adjacent to the main volume. The main structure comprises at least one main loop, which can be open or closed. The secondary structure comprises, in turn, at least one open secondary loop having two ends. The article thus formed may be in an at least partially folded configuration, referred to as the first configuration, in which the secondary loop is disposed at least over a portion of its length against the main loop, and in an at least partially deployed configuration, said second configuration, wherein the secondary loop is remote from said main loop except at least one of its two ends. Typically, at least a first one of the two ends of the secondary loop is movable along the main loop, so as to allow the passage of the first configuration to the second configuration and the formation of the secondary volume. Thus, by sliding at least one of its ends along the main loop, the secondary loop is easily deployed to form the support structure of the extension.

Conversely, for folding of the extension, the secondary loop can easily slide along the main loop, even if it is intended to be of great length to increase the secondary volume in the deployed configuration.

The invention is divided into several variants presented below, which may be considered alone or in combination with one or more others. The secondary loop may have only one of its two ends which is fixed relative to the main loop. Alternatively, its two ends are fixed with respect to the main loop. The length of the secondary loop between its two ends is greater than the length of the portion of the main loop located between the two junction points of this main loop respectively with the two ends of the secondary loop in the second configuration.

This allows to obtain a large secondary volume, or even greater than the main volume, without hindering the unfolding and folding. Indeed, thanks to the mobility of one end or both ends of the secondary loop relative to the main loop, the bow of the secondary loop is positioned in the first configuration (folded configuration), on its entire length against the main loop. The article comprises a first blocking means capable of blocking the secondary loop in the first configuration, and / or a second blocking means capable of blocking the secondary loop in the second configuration. The article includes a means for assisting the deployment of the secondary loop. The first end of the secondary loop (or both ends of this secondary loop in the variant in which these two ends are movable) is movable by sliding in a storage sleeve which can be continuous or discontinuous.

This storage sleeve is connected, preferably by stitching, to the flexible envelope.

Preferably, the length (LF) of the storage sleeve, the length (LS) of the secondary loop between its two ends, and the length (LP) of the portion of the main loop located between the two junction points of this loop. main respectively with the two ends of the secondary loop in the second configuration, are such that: LF + LP LS. Also preferably, the main loop is slid into a main sheath. This main sleeve is continuous or discontinuous, and connected, preferably by sewing, to the flexible envelope. The storage sleeve is then attached, preferably by sewing, on this main sheath.

Alternatively, the storage sleeve is constituted by a portion of the main sleeve. More preferably, the article comprises a means for assisting the deployment of the secondary loop, which comprises a flexible elongate member, in particular of cord type, having an end secured to the first end of the secondary loop, and a free opposite end , and whose length is such that its free end protrudes from the storage sleeve in the first and second configurations, so as to allow the seizure of the free end by a user. In this case, it can be provided that the assistance means comprise driving means capable of enabling the first end of the secondary loop to be driven in a given direction when the free end of the elongate element in a direction different from, preferably opposed to, the given direction. This drive means may be a hole disposed on the main sleeve and / or on the storage sleeve, and adapted to allow passage of the elongate member. Alternatively, this drive means may be a pulley type element disposed on the main sleeve and / or on the storage sleeve, and adapted to receive the elongate member. The article may also comprise a locking means adapted to block the secondary loop in the second configuration, and disposed at the output of the drive means on the free end side of the elongate member. In yet another variant, the main loop, said upper main loop, at least partially forms the upper portion of the main volume, and the secondary loop, said upper secondary loop forms at least partially the upper portion of the secondary volume. In this case, the upper secondary loop may, in the first configuration, be arranged over its entire length against the upper main loop.

Alternatively, in the first configuration, the upper secondary loop may be disposed over at least a portion of its length including at most one of its two ends, against the upper loop. In another variant, the main structure comprises a main loop, called the lower main loop, forming at least partially the lower portion of the main volume, and the secondary structure comprises a secondary loop, called the lower secondary loop, forming at least partially the lower portion. secondary volume. In this case, the lower secondary loop may, in the first configuration, be disposed, over at least a portion of its length from its first end and over at least a portion of its length from its second end, against the main loop lower. The present invention will be better understood on reading the description which will be given of embodiments of an article, illustrated by the following appended drawings: FIG. 1: schematically represents an article according to the invention in a first example of realization, - Figures 2a, 2b, 2c: schematically represent an article according to the invention in the first embodiment (Figure 2a), with a detailed view before deployment of the extension (Figure 2b) and after deployment of the extension (Figure 2c) - Figures 3a, 3b, 3c: schematically represent the arch structure of an article according to the invention in a second embodiment, before deployment of the extension (Figure 3a), being deployed the extension (FIG. 3b) and after deployment of the extension (FIG. 3c) - FIGS. 4, 4b show schematically the arch structure of an article according to the invention in a third embodiment, a before deployment of the extension (Figure 4a), and after deployment of the extension (Figure 4b).

A first embodiment of an article according to the invention is shown in Figure 1, in the form of an article of the tent or shelter type. The arch structure of this tent comprises a reduced main structure, in this embodiment, a single main loop 1, which is secured to a flexible envelope 5, 6, 7, 8 constituting the fabric of the tent. The arch structure also comprises a secondary structure reduced, in this embodiment, to a single secondary loop 3, to which is also secured the flexible envelope 6, 7, 8. The flexible envelope is decomposed into different panels 5 to 8.

Some of these panels are both integral with the main loop 1 and the secondary loop 3, such as the panels 6 and 8. Other panels are integral only to the main loop 1, such as the panel 5 stretched inside. of this main loop 1. Finally, other panels are secured only to the secondary loop 3, such as the panel 7.

Other panels may be provided, not shown in Figure 1, such as a panel symmetrical to the panel 8, secured to both the main loop 1 and the secondary loop 3. Thus, the main loop 1 and at least the panel 5 form a main volume.

Furthermore, the secondary loop 3 and at least the panels 6, 7 and 8 form a secondary volume adjacent to the main volume and thus constituting an extension of the main tent. In this exemplary embodiment, the main loop 1 is a closed loop, but could equally well be an open loop. This main loop 1 can be conventionally inserted in a sleeve 10, which can be continuous or discontinuous, or even consist of a succession of simple passers. This sleeve 10 may be attached for example by sewing to the flexible envelope 5 to 8 (in the example shown in Figure 1: the panels 5, 6, 8 and symmetrical not shown). Moreover, as will be seen later with reference to FIGS. 3 and 4, in other exemplary embodiments, the main structure may comprise several main loops. The secondary loop 3 is, in turn, an open loop, with two ends 3a, 3b. This secondary loop 3 can be conventionally inserted in a sleeve 16, which can be continuous or discontinuous, or even consist of a succession of simple loops. This sheath 16 may be attached for example by sewing to the flexible envelope 5 to 8 (in the example shown in Figure 1: the panels 6, 7, 8 and its symmetrical not shown). As will also be seen later with reference to FIGS. 3 and 4, in other exemplary embodiments, the secondary structure may comprise a plurality of secondary loops. The article is shown in Figure 1 in its deployed configuration, said second configuration. In this second configuration, the secondary loop 3 is remote, therefore remote, from the main loop 1, with the exception of its two ends 3a, 3b which remain in contact with the main loop 1.

In other exemplary embodiments, one of the ends 3a, 3b of the secondary loop 3 could be remote from the main loop 1, provided that at least one of these ends 3a, 3b remains in contact with or near the main loop 1.

As shown in Figure 1, the secondary loop 3 joined the main loop 1 by its ends 3a, 3b respectively at two junction points P1, P2. In this exemplary embodiment, the length LS of the secondary loop 3 between the two points P1 and P2 is greater than the length LP of the main loop 1 between these two points P1 and P2. Indeed, LS is not limited to LP, because of the mobility of at least one of the two ends 3a, 3b of the secondary loop 3 relative to the main loop 1, as will be seen later with the The other of the two ends 3a, 3b may equally well be fixed or mobile with respect to the main loop 1. This mobility of at least one of the two ends 3a, 3b of the secondary loop 3 effectively makes it possible to use a secondary loop 3 of significant length LS, greater than LP, thus to obtain an extension with a large secondary volume, without hindering the folding.

A second blocking means may be provided, not shown in FIG. 1, in order to keep the secondary loop 3 locked in its second configuration (deployed configuration). It may be for example one or more strings stretched from the secondary loop 3 to the ground. FIGS. 2a, 2b, 2c schematically represent the article in the first example of embodiment as described above with reference to FIG. 1, but with details of embodiment at the junctions between the ends 3a, 3b of the secondary loop 3 with the main loop 1. Figure 2a shows the tent exactly as shown in Figure 1, so that all explanations given above in relation to Figure 1 apply of course in Figure 2a.

FIG. 2b shows a detail view at the junction between the end 3a of the secondary loop 3 and the main loop 1 slid in the sleeve 10, in the folded configuration, called the first configuration, whereas FIG. detail view at this junction in the deployed configuration or second configuration. In this embodiment. The secondary loop 3 is movable, by its end 3a, by sliding in a sleeve 9. This sleeve 9 may be continuous or discontinuous, or even consist of simple loops.

This sleeve 9 may also be connected, for example by sewing directly or indirectly to the flexible envelope 5 to 8. As shown in Figures 2b and 2c, this storage sleeve 9 may be attached, for example by sewing , on the main sheath 10 in which is inserted the main loop 1.

Alternatively, the storage sleeve 9 may consist of a portion of the main sleeve 10. In this case, the main sleeve 10 has an opening at the junction, to insert and slide the end 3a of the loop secondary 3 along the main loop 1. As shown in Figure 2b, the storage sleeve 9 has a length LF, which is such that LF + LP LS, with LP and LS defined above relative to Figure 1. Thus , sliding in this sleeve 9, the secondary loop 3 can be easily placed, at least over part of its length, against the main loop 1 for the folding of the article, even if its length LS is important. Ideally, for folding, the secondary loop 3 slides along the main loop 1 to be, over its entire length, against this main loop 1. The mobility of the end 3a of the secondary loop 3 relative to the main loop 1, along this main loop 1, thus allows the passage of the first configuration (folded) partially shown in Figure 2b, the second configuration (deployed) partially shown in Figure 2c, and a partial view to Figures 1 and 2a. It can be provided a first blocking means, not shown in the figures, adapted to block the secondary loop 3 in the first configuration.

It may be for example a clipping system adapted to maintain the secondary loop against the main loop 1, by cooperation of a first clipping means disposed on the secondary loop 3, at a location where the sleeve 16 is open , and a second clipping means disposed on the main loop 1 at a place where the sheath 10 is open. It can also be a simple link. In the detailed views 2b and 2c, a means 11 for assisting the deployment of the extension, and therefore of the secondary loop 3, are also shown. In the exemplary embodiment as represented in FIGS. 2b and 2c, this means for assisting the deployment of the secondary loop 3 comprises a flexible elongated element 11, for example a cord 11. This cord 11 has a free end 11a, and its opposite end 15 is connected to the first end 3a of the secondary loop 3. In this embodiment, the first end 3a of the secondary loop 3 is crimped in a ring 14 or a protective metal cap 14, and the elongated element 11 is caught in the crimping. The length of the elongate element 11 is such that its free end 11a always exceeds the storage sleeve 9, both in the first (Figure 2b) in the second (Figure 2c) configuration. This allows the user to easily grasp the elongate member 11 by this free end 11a to act on the deployment of the secondary loop 3 and to move it from the first configuration, as shown in Figure 2b, to the second configuration as shown in Figure 2c. Indeed, by pulling on this elongate member 11, the user can slide the end 3a of the secondary loop 3 in the sleeve 9 upwardly of this sleeve 9, which has the effect of deploying the secondary loop to the second configuration.

Without any other means of assistance, to obtain this deployment via the elongated element 11, the user must pull it upwards, that is to say from the bottom of the sheath 9 upwards. of the sleeve 9. To facilitate this deployment, the user can pull down, that is to say from the top of the sleeve 9 to the top of the sleeve 9, and bear on the upper edge of the sleeve 9. However, this may damage the sleeve 9, which is generally formed of the same flexible material as the flexible envelope 5 to 8, and can not therefore be a good point of support.

This is why one can provide a drive means 12, to facilitate the drive of the first end 3a of the secondary loop 3 in a given direction, in this case to the exit of the sleeve 9, when one draws on the free end 1a of the elongate element 11 in a direction different from the given direction.

Preferably, the different direction is the opposite direction, in this case the direction of the top of the sleeve 9 down the sleeve 9. In the embodiment shown in Figures 2b and 2c, the drive means 12 comprises a hole 12 formed in the main sleeve 10, protected by an eyelet, in which passes the elongate element 11.

To allow this, it is necessary that the storage sleeve 9 attached to the main sleeve 10 communicates with the latter, for example via an opening (not shown in the figures) in the bottom of the storage sleeve 9 and opening in the main sleeve 10. Alternatively, and particularly, but not only, when the storage sleeve 9 and the main sleeve 10 are merged, this hole 12 can be formed in the storage sleeve 9 itself, preferably in its upper part. Another solution is to replace the hole 12 with a pulley receiving the elongated element 11. This pulley is then either attached to the storage sleeve 9, or reported on the main sleeve 10 (or both when they are confused) .

It is possible to provide a third blocking means, not shown in the figures, making it possible to block the secondary loop 3 in the second configuration, disposed at the output of the drive means 12, for example at the outlet of the hole 12, on the side of the free end 11a of the elongate element 11.

Such third locking means may for example be a sliding element along the elongated element 11 whose dimensions do not allow it to pass into the drive means 12, and able to be locked in a given position along this elongated element 11. In this way, when the secondary loop 3 is deployed, by blocking the sliding element near the exit of the hole 12, or more generally of the drive means 12, the elongated element 11 is prevented from drag and return to the first configuration. A second embodiment is shown in Figures 3a, 3b, 3c.

For simplicity, the schematic representation relates only to the elements of the arch structure of the article. Thus, the article comprises a main structure 1, 2 comprising in the upper part a closed upper main loop 1, which at least partially forms the upper portion of the main volume. This upper main loop 1 could just as easily be an open loop. Furthermore, the main structure 1, 2 comprises an open lower main loop 2 at the bottom, which at least partially forms the lower portion of the main volume. This lower main loop 2 could just as well be a closed loop.

The article also comprises a secondary structure 3, 4 comprising an upper open secondary loop 3 at the top, which at least partially forms the upper portion of the secondary volume. Finally, the secondary structure 3, 4 also comprises a lower open secondary loop 4 at the bottom, which at least partially forms the lower portion of the secondary volume.

In the folded configuration, as represented in FIG. 3a, the upper secondary loop 3 is disposed on a portion of its length comprising neither of its two ends 3a, 3b, against the upper main loop 1.

It would be possible to envisage that the upper secondary loop 3 is disposed over a portion of its length comprising only one of its two ends 3a, 3b against the upper main loop 1, that is to say, going up along of this upper main loop 1. It would also be possible to envisage that the upper secondary loop 3 is arranged along its length along the upper main loop 1, including its two ends 3a, 3b which would go up along this upper main loop 1. This upper secondary loop, as shown in Figure 3a, is also disposed on at least a portion of its length from its first end 3a and on at least a portion of its length from its second end 3b, along the lower main loop 2. Furthermore, in this folded configuration, as shown in Figure 3a, the lower secondary loop 4 is disposed, over at least a portion of its length from its first end 4a and over at least a portion of its length from its second end 4b, along the lower main loop 2. This lower secondary loop 4 is also disposed partly along the upper main loop 1, at least in the lower portion of this upper main loop 1.

It would also be possible to envisage that the lower secondary loop 4 is arranged on at least a portion of its length starting from its first end 4a and on at least a portion of its length starting from its second end 4b, along the loop upper main 1, that is to say, going up by its ends 4a, 4b along this upper main loop 1.

As represented by the arrows, the upper and lower secondary loops 3 and 4 are movable relative to the upper and lower main loops 1, 2, by sliding their respective ends 3a, 3b and 4a, 4b, along these main loops. upper and lower 1, 2.

Alternatively, as already explained above, it would be possible to envisage that only one of the ends 3a, 3b of the upper secondary loop and / or only one of the ends 4a, 4b of the lower secondary loop can slide along one or more of the main loops 1, 2 of the main structure 1, 2.

Figure 3b schematically shows the arch structure of Figure 3a, in intermediate configuration between the first configuration and the second configuration. It is thus seen that the two lower and upper secondary loops 3, 4 have begun to expand to form the secondary structure supporting the extension. Finally, as shown in FIG. 3c, at the end of the movement of the upper and lower secondary loops 3, 4 with respect to the upper and lower main loops 1, 2, the deployed configuration, or second configuration is reached. The upper and lower secondary loops 3, 4 are then remote from the upper and lower main loops 1, 2, with the exception of their respective two ends 3a, 3b and 4a, 4b. Optionally, it would be possible to envisage that the deployment movement takes place until only one of the ends 3a, 3b of the upper secondary loop 3 and / or only one of the ends 4a, 4b of the lower secondary loop 4 remains near the upper and lower main loops 1, 2. It should also be noted that, in this example embodiment as shown in FIGS. 3a to 3c, the lower secondary buckle 4 open could have been fixed with respect to the main loops. upper and lower 1, 2. It would then have been considered as part of the main structure, forming for example with the lower main loop 2 open a closed base loop 2, 4. These two open loops 2, 4 could then be replaced by a single closed loop. More generally, it will be recalled that, conventionally with such articles 5 having an arch structure, the closed loops may consist of two open half-loops. Figures 4a and 4b show another embodiment, in a representation mode similar to that used for Figures 3a to 3c, that is to say a mode of representation focused on the arch structure. In this exemplary representation, the mobility of the lower secondary loop 4 with respect to the main loops 1, 2 of the main structure 1, 2 is similar to that described with reference to FIGS. 3a to 3c, and all the considerations developed. relative to the lower secondary loop 4 of FIGS. 3a to 3c also applies to the lower secondary loop 4 of FIGS. 4a and 4b. Regarding the upper secondary loop 3, it differs from that described above with reference to FIGS. 3a to 3c, in that in the first configuration (FIG. 4a), this upper secondary loop 3 is arranged over its entire length, including its ends 3a, 3b, against the upper main loop 1, and only against this main loop 1. In this example, in the second configuration (Figure 4b), the ends 3a and 3b of the upper secondary loop 3 are blocked in eyelets 13 arranged along the sleeve in which is inserted the upper main loop 1. It is understood, thanks to the embodiments which have been presented throughout the description, that the invention allows to have an extension whose volume, called secondary volume, can be important, while simplifying the folding and deployment, and maintaining a small footprint in folded configuration. Finally, it will be recalled that the present description is given for information only, and is therefore not limitative of the invention.

In particular, the invention is not reduced to an article with an arch structure whose main structure comprises one or two main loops, and the secondary structure comprises one or two secondary loops, but extends to an arch structure comprising a any number of secondary and main loops.

Claims (19)

REVENDICATIONS1. Foldable article, including tent type, comprising a structure in arches (1, 2, 3, 4) and a flexible envelope (5 to 8) secured to said structure in arches (1, 2, 3, 4), said structure in arches (1, 2, 3, 4) comprising on the one hand a main structure in arches (1, 2) adapted to form with at least a portion of said flexible envelope (5 to 8) a main volume, and secondly a secondary structure in arches (3, 4) capable of forming with at least a portion of said flexible envelope (5 to 8) a secondary volume adjacent to said main volume, said main structure (1, 2) comprising at least one main loop (1, 2), said secondary structure comprising at least one open secondary loop (3, 4) having two ends (3a, 3b, 4a, 4b), said article can be in an at least partially folded configuration, said first configuration, wherein said secondary loop (3, 4) is disposed at least over a portion of its length against said main loop (1, 2) and in at least partially deployed configuration, said second configuration, wherein said secondary loop (3, 4) is remote from said main loop (1, 2) except for at least one of his two ext rims (3a, 3b, 4a, 4b), characterized in that at least one first (3a, 4a) of the two ends (3a, 3b, 4a, 4b) of said secondary loop (3, 4) is movable along said main loop (1, 2), so as to allow the passage of said first configuration to said second configuration and the formation of said secondary volume. 2. Article according to claim 1, characterized in that the second (3b, 4b) of the two ends (3a, 3b, 4a, 4b) of the secondary loop (3, 4) is fixed relative to the main loop (1 , 2). 3. Article according to any one of claims 1 and 2 characterized in that the length (LS) of the secondary loop (3, 4) between its two ends (3a, 3b, 4a, 4b) is greater than the length (LP) of the portion of the main loop (1, 2) located between the two points (P1, P2) of junction of said loop main (1, 2) respectively with said two ends (3a, 3b, 4a, 4b) of said secondary loop (3, 4) in the second configuration. 4. Article according to any one of claims 1 to 3, characterized in that it comprises a first blocking means adapted to block the secondary loop (3, 4) in the first configuration, and / or a second blocking means adapted to block the secondary loop (3, 4) in the second configuration. 5. Article according to any one of claims 1 to 4, characterized in that it comprises means (11, 12) for assisting the deployment of the secondary loop (3, 4). 6. Article according to claims 1 to 5, characterized in that the first end (3a, 4a) of the secondary loop (3, 4) is movable by sliding in a storage sleeve (9) continuous or discontinuous and connected, preferably by sewing, to the flexible envelope (5 to 8). 7. Article according to claim 6, characterized in that the length (LF) of the storage sleeve (9), the length (LS) of the secondary loop (3, 4) between its two ends (3a, 3b, 4a, 4b), and the length (LP) of the portion of the main loop (1, 2) located between the two junction points (P1, P2) of said main loop (1, 2) respectively with said two ends (3a). , 3b, 4a, 4b) of said secondary loop (3, 4) in the second configuration, are such that: LF + LP LS 8. Article according to any one of claims 6 and 7, characterized in that the main loop (1, 2) is slid into a main sleeve (10) continuous or discontinuous connected, preferably by sewing to the flexible envelope ( 5 to 8), and in that the storage sleeve (9) is attached, preferably by stitching, to said main sleeve (10). 9. Article according to any one of claims 6 and 7, characterized in that the main loop (1, 2) is slid into a main sheath (10) continuous or discontinuous connected, preferably by sewing to the envelopesouple (5). 8), and in that the storage sleeve (9) is constituted by a portion of said main sleeve (10). 10. Article according to any one of claims 6 to 9, characterized in that it comprises means (11, 12) for assisting the deployment of the secondary loop (3, 4) comprising an elongated element (11) flexible , in particular of cord type (11), having an end (15) integral with the first end (3a, 4a) of the secondary buckle (3, 4) and an opposite end (11a) free, and whose length such as its said free end (11a) protrudes from the storage sleeve (9) in the first and second configurations, so that said free end (11a) can be grasped by a user. 11. Article according to claim 10, characterized in that the assistance means (11, 12) comprises driving means (12) adapted to allow driving of the first end (3a, 4a) of the secondary loop (3, 4) in a given direction when the free end is pulled ( 11a) of the elongate element (11) in a direction different from, preferably opposed to, said given direction. 12. Article according to claim 11, characterized in that the drive means (12) is a hole (12) disposed on the main sleeve (10) and / or on the storage sleeve (9), and adapted to allow the passage of the elongate element (11). 13. Article according to claim 11, characterized in that the drive means is a pulley type element disposed on the main sleeve (10) and / or on the storage sleeve (9), and adapted to receive the element. slender (11). 14. Article according to any one of claims 11 to 13, characterized in that it comprises a third blocking means adapted to block the secondary loop (3, 4) in the second configuration, and disposed at the output of the means of drive (12) on the side of the free end (11a) of the elongate element (11). 15. Article according to any one of claims 1 to 14, characterized in that the main loop (1), said upper main loop (1), at least partially forms the upper portion of the main volume, and in that the loop secondary (3), said upper secondary loop (3), at least partially forms the upper portion of the secondary volume. 16. Article according to claim 15, characterized in that in the first configuration, the upper secondary loop (3) is arranged over its entire length against the upper main loop (1). 17. Article according to claim 15, characterized in that in the first configuration, the upper secondary loop (3) is arranged on at least a portion of its length including at most one of its two ends (3a, 3b), against the upper loop (1). 18. Article according to any one of claims 1 to 17, characterized in that the main structure (1, 2) comprises a main loop (2), said lower main loop, forming at least partially the lower portion of the main volume, and in that the secondary structure comprises a secondary loop (4), said lower secondary loop (4), forming at least partially the lower portion of the secondary volume. 19. Article according to claim 17, characterized in that in the first configuration, the lower secondary loop (4) is disposed over at least a portion of its length from its first end (4a) and over at least a portion of its length starting from its second end (4b), against the lower main loop (2).