CN115874857A - Adjustable tent - Google Patents

Abstract

The present invention relates to an adjustable tent, the rear assembly of which has arches supporting the rear portion of the tarpaulin, each of said arches being arched between two lower hinges so as to allow the rear assembly to be reversibly deployed between a stowed configuration, in which the arches are stacked flat, and a use configuration, in which the arches are angularly spaced apart, forming a rear shelter space, the front assembly having support arms supporting the front portion of the tarpaulin, the upper end of each of said arms being engaged in a central hinge connected to the front arch of the rear assembly and being arranged to allow the front assembly to be reversibly deployed between the stowed configuration, in which the arms are folded, and the use configuration, in which the arms are angularly spaced apart, forming a front shelter space.

Description

Adjustable tent

Technical Field

The present invention relates to an adjustable tent having a structure on which a tarpaulin is configured to form a shelter for at least one person.

Such a tent is particularly suitable for carrying out outdoor sports or leisure activities, such as fishing, camping or observing animals in the natural environment, in order to accommodate at least one person and/or to accommodate the equipment required for protection against ultraviolet radiation and/or against bad weather for such activities.

To allow the tent to be transported between uses, the structure may be reversibly deployable between a compact stowed configuration and a use configuration in which the flexible tarpaulin is deployed to form a shelter space. Background

US-2003/0066550 proposes a structure of this type having three inverted U-shaped arches whose lower ends are mounted for rotation about an axis to allow reversible movement of the arches between a flat stacking mode and a deployed mode.

This embodiment allows the tarpaulin to be shaped as a half-dome, creating a sheltered space for entry of an opening obtained by the front arch, kept in the stretched position, said opening and sheltered space having a geometry particularly suitable for outdoor activities, such as fishing.

GB-2259927 proposes a tent, the sheltered space of which is made in the shape of a dome, which is opened by a structure with several unfolding arms around a central hinge.

However, the standardization of such tents is limited in that the dimensions of the sheltered space are defined by the dimensions of the arch or deployment arm, and therefore the structure must be designed for each desired dimension, particularly with respect to the number of people and/or the amount of equipment to be accommodated.

Disclosure of Invention

The present invention aims to improve the prior art and in particular to propose a tent whose sheltered space has a geometry suitable for outdoor activities, while being adjustable in size, and whose reversibly deployable structure between a stowed configuration and a use configuration is particularly simple to implement.

To this end, the invention proposes an adjustable tent having a structure on which a tarpaulin is configured to form a shelter space for at least one person, said structure having a back assembly having a base arch and a front arch supporting a back portion of the tarpaulin, the base arch and the front arch each being arched between a right end and a left end, the right end being engaged in a right lower hinge, the left end being engaged in a left lower hinge to enable the back assembly to be reversibly deployed between a stowed configuration and a use configuration, the stowed configuration of the back assembly, the base arch and the front arch being flatly superposed, the use configuration of the back assembly, the front arch being angularly spaced from the base arch, the back portion of the tarpaulin being deployed between said base arch and front arch to form the back shelter space, said adjustable tent being characterized in that the structure has a front assembly having a plurality of arms supporting the front portion of the tarpaulin, the upper end of each arm being engaged in a central hinge connected to the front arch of the back assembly, said central hinge being arranged to enable the front assembly to be reversibly deployed between the stowed configuration and the front arms to form the front arm folding configuration, the front assembly being reversibly deployable in the use configuration, the front arm assembly being angularly spaced apart.

Drawings

Other features and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings, in which:

FIGS. 1a, 1b and 1c schematically illustrate an adjustable tent according to the present invention, respectively showing dimensions for a sheltered space, each drawing from top to bottom showing the tent in a rear view, a front view, a top view and a bottom perspective view making the sheltered space visible, respectively;

fig. 2 schematically illustrates in side view different stages of deployment of the adjustable tent of the present invention from its stowed configuration to its use configuration;

fig. 3 schematically illustrates, in a front perspective view, the structure of the adjustable tent of fig. 2 in a use configuration;

4a, 4b and 4c schematically illustrate the structure of the front assembly of FIG. 3 in a stowed configuration in front perspective view, top view respectively;

fig. 5 schematically illustrates the tent shown in fig. 2 in a use configuration in a partial top perspective view;

fig. 6 schematically illustrates, in a front perspective view, a structure of an adjustable tent according to another embodiment of the present invention in a use configuration.

Detailed Description

With reference to these figures, an adjustable tent, particularly for outdoor sporting or leisure activities such as camping, fishing or viewing animals in the natural environment, is described.

The adjustable tent has a structure 1 on which a tent cloth 2 is configured to form a sheltered space for at least one person.

As shown in fig. 1a, 1b and 1c, the adjustable tent can be designed in different sizes depending on the total sheltered space it forms in its in-use configuration. Thus, a user who needs to purchase a tent may select a tent based on the number of people and/or the amount of equipment to be accommodated.

In particular, fig. 1a to 1c show an adjustable tent forming a sheltered space with a large, medium and small volume, respectively, wherein three, two and one camp beds 3a, 3b are arranged, respectively.

The tarpaulin 2 of the adjustable tent is made of waterproof fabric and/or has ultraviolet radiation filtering properties to protect people and/or equipment sheltered from the space from bad weather and/or said radiation. For this purpose, the tarpaulin 2 can be made of a textile material based on natural and/or synthetic fibers, optionally chemically treated with agents suitable for giving it such properties.

The structure 1 can be assembled from rigid plastic or metal tubes.

The structure 1 has a rear assembly 1a with a base arch 4a and a front arch 4b supporting a rear portion 2a of the tarpaulin 2, each of said arches being arched between a right end engaged in a right lower hinge 5d and a left end incorporated in a left lower hinge 5g so that the rear assembly 1a can be reversibly deployed between a stowed configuration, in which the arches 4a, 4b are flatly superposed, and a use configuration, in which the front arch 4b is angularly spaced from the base arch 4a and the rear portion 2a of the tarpaulin 2 is deployed between said arches, forming a rear shelter space 6a.

In this specification, spatial orientation terms are defined with reference to the direction of movement of a person entering a sheltered space under the adjustable tent. Thus:

the terms "front" and "rear" refer to the positioning shown on the right and left, respectively, on fig. 2, with respect to the positioning in longitudinal direction close to and away from, respectively, the entrance 7 of the adjustable tent;

the terms "left" and "right" are relative to the side of the person facing the entrance 7 of the adjustable tent.

In addition, the terms "longitudinal" and "transverse" refer to a direction parallel to the maximum dimension of the adjustable tent in the use configuration (vertical in fig. 1a, 1b and 1 c), and to a direction vertical to the maximum dimension (horizontal in these figures), respectively.

The lower hinges 5g, 5d have a common axis of rotation a, which extends in a horizontal direction.

According to a first embodiment, as shown in particular in fig. 2 and 3, the base arch 4a is arranged horizontally to bear against the ground and the front arch 4b is arranged vertically in the configuration of use.

According to a second embodiment, as shown in fig. 6, the front arch 4b is arranged vertically in the configuration of use, with the base arch 4a being spaced from said front arch by an angle α that is absolutely less than 90 °, in particular about 45 °.

In the configuration of use, the rear portion 2a of the tarpaulin 2 is adapted to the geometry of the arches 4a, 4b to form a rear shelter space 6a in the shape of a half dome.

To this end, the rear assembly 1a may additionally have at least one arched intermediate arch 4c, the right end of which is engaged in the right lower hinge 5d and the left end in the left lower hinge 5g, so as to lay flat superposed arches 4a, 4b, 4c (fig. 2) in the stowed configuration and to spread out the intermediate arch 4c (fig. 2, 3) between the base arch 4a and the front arch 4b in the configuration of use.

In the first embodiment shown, the rear assembly 1a has a single intermediate arch 4c arranged spaced from the base arch 4a and the front arch 4b each by an angle α a, α b, each substantially equal to 45 °, with respect to the horizontal axis of rotation a.

Advantageously, the rear assembly 1a is shaped and sized for forming a rear sheltered space 6a, wherein the volume is sufficient to arrange a camp bed 3a in a transverse direction in the rear sheltered space, so that a supine person or at least two seated persons rest on said camp bed in said rear sheltered space.

The structure 1 also has a front assembly 1b having a plurality of arms 8a,8b supporting the front portion 2b of the tarpaulin 2, the upper end 10a,10b of each arm 8a,8b being engaged in a central hinge 9 connected to the front arch 4b of the rear assembly 1a, said central hinge being arranged to enable the front assembly 1b to be reversibly deployed between a stowed configuration, in which the arms 8a,8b are folded, and a use configuration, in which the arms 8a,8b are angularly spaced apart, the front portion 2b of the tarpaulin 2 being deployed between the arms to form a front shelter space 6b.

In both embodiments shown, the front assembly 1b has at least one set of two side arms 8a,8b, each having a lower end 11 for bearing on the ground, the set of two side arms 8a,8b extending at the left and right of the central hinge 9, respectively.

The front assembly 1b may in particular have a set of elementary arms 8a and at least a set of front arms 8b, which fold towards them in the stowed configuration.

As shown, the rotation axis B of the central hinge 9 extends in a vertical direction, the basic arm 8a being arranged, in the configuration of use, on a vertical plane PF through which said central hinge passes.

In particular, the elementary arms 8a extend, in the configuration of use, on both sides of the central hinge 9, each elementary arm being arranged on a frontal vertical plane PF through which said central hinge passes. In addition, the front arms 8B, in the configuration of use, each form with the adjacent elementary arm 8a an angle β of about 45 ° with respect to the vertical rotation axis B.

As shown in fig. 2, the base arms 8a remain substantially stationary between a stowed configuration and a use configuration, the front arms 8b each being folded over one of the base arms 8a in the stowed configuration.

In other embodiments, as shown in fig. 4c, the basic arms 8a are folded one behind the other towards the rear of the central hinge 9, according to an angle of about 90 ° with respect to the rotation axis B, so as to be each arranged on a vertical right-hand longitudinal plane PSd and on a vertical left-hand longitudinal plane PSg on either side of a vertical mid-line longitudinal plane PSM passing in the centre of said central hinge. Likewise, each front arm 8B is pivoted by an angle of about 135 ° with respect to the rotation axis B in the stowed configuration, folding over one of the base arms 8a respectively.

Advantageously, in this embodiment, the side arms 8a,8b are arranged so that each front arm 8b is arranged, in the stowed configuration, on the same bisecting vertical plane PSg, PSd as the adjacent base arm 8a, so as to limit the volume of said arms and thus of the adjustable tent in said stowed configuration.

For this purpose, the front arms 8b are each fixed to the central hinge 9 along a pivot point 10b, the pivot point 10b being vertically offset below the pivot point 10a of the base arm 8 a. In addition, the front arm 8b and the basic arm 8a have the same geometry, the front arm 8b having dimensions smaller than those of the basic arm 8a so as to be each able to be arranged, in the stowed configuration, in the space defined by the adjacent basic arm 8 a.

As shown, the side arms 8a,8b of each group have a semi-arched geometry, so that said group can conform the front portion 2b of the tarpaulin 2 with an arched section in the configuration of use.

The anterior component 1b also has at least one set of two upper arms 8c, the free end 12 of each of which is deployable in the in-use configuration towards the front of the central hinge 9.

To limit bulk in the stowed configuration, the upper arm 8c may fold towards the base arm 8a in the stowed configuration.

As shown in fig. 2, the upper arms 8c extend, in the stowed configuration, on either side of a central hinge 9, arranged on a front vertical plane PF' through which said central hinge passes. In particular, the front vertical plane PF' containing the upper arm 8c in the stowed configuration may coincide with the front vertical plane PF containing the base arm 8a, or be slightly offset with respect to this front vertical plane PF, as shown in fig. 2.

In the embodiment shown in fig. 4c, the upper arm 8c is folded in the stowed configuration towards the rear of the central hinge 9, each being arranged in a longitudinal vertical side plane PSg, PSd common to the base arm 8a and the adjacent forearm 8b, respectively.

For this purpose, each upper arm 8c is fixed to the central hinge 9 along one pivot point 10c, the pivot point 10c being arranged vertically above the respective pivot points 10a,10b of the forearm 8b and the adjacent base arm 8 a. Advantageously, this arrangement may limit the volume of the upper arm 8c, thereby limiting the volume of the adjustable tent when in the stowed configuration.

In the embodiment shown, the free end 12 of the upper arm 8c is adapted, in the configuration of use, to an opening 7 in the front portion 2b of the tarpaulin 2 allowing access to the front sheltering space 6b.

To this end, in the first embodiment shown (figures 2 to 5), the upper arm 8c extends on a horizontal plane PH through which the central hinge 9 passes, the free end 12 of which is raised so that it conforms to the front portion 2b of the tarpaulin 2.

Furthermore, as shown in fig. 4b, the upper arm 8c extends in the configuration of use in front of the central hinge 9, each forming an angle γ of between 5 ° and 20 ° with the longitudinal vertical midline plane PSM.

In the second embodiment shown (fig. 6), the upper arm 8c extends in the shape of a circular arc from the central hinge 9 downwards to its front end 12, which is raised so that it conforms to the front part of the tarpaulin. Each upper arm 8c also has a support bar 18 which is in particular rotatably and/or detachably connected below the free end 12 of the upper arm, said support bar being arranged to extend substantially vertically on both sides of the opening 7 in the use configuration of the adjustable tent, the corresponding lower end 19 of the support bar being supported on the ground.

As shown, the front portion 2b of the tarpaulin 2 has an inner portion 13 conforming to the side arms 8a,8b in the configuration of use. In particular, the inner portion 13 extends below the side arms 8a,8b and the upper arm 8c and has a front end in which a pocket 14 is formed for receiving the free end 12 of the upper arm 8c.

In other embodiments, not shown, the front portion 2b of the tarpaulin 2 may also have an outer portion conformed to the upper arms 8c in the configuration of use, in particular arranged for covering said upper and side arms 8a,8b for aesthetic reasons and/or to make the structure 1 weather-proof.

In the embodiment shown, the structure 1 has an intermediate module 1c, arranged between the front module 1b and the rear module 1a, to which the intermediate portion 2c of the tarpaulin 2 is conformed, so as to form an intermediate sheltering space 6c.

In particular, the central hinge 9 of the front assembly 1 is connected by the intermediate assembly 1c to the front arch 4b of the rear assembly 1 a. In other embodiments not shown, when the adjustable tent has only two assemblies, front assembly 1b and rear assembly 1a, the central hinge 9 may be connected to one common central arch of the assemblies.

Advantageously, the intermediate sheltered space 6c has a dimensional volume sufficient to arrange at least two camp beds 3b longitudinally, so as to allow two persons lying on the back or at least four persons sitting on said camp beds to rest.

As shown in fig. 1a and 1b, the rear shielded space 6a and the middle shielded space 6c of the middle and large-sized adjustable tent are sized to arrange two camp beds 3b in a longitudinal direction. In particular, the total volume of the sheltered space of a large adjustable tent (fig. 1 a) is sufficient to arrange the third camp bed 3a laterally, especially in the rear sheltered space 6a.

The intermediate module 1c has a first arch 15a associated with the rear module 1a and a second arch 15b associated with the front module 1b, said first and second arches being reversibly movable between a stowed configuration, in which they are vertically superposed, and a use configuration, in which they are longitudinally spaced apart, the intermediate portion 2c of the tarpaulin 2 being stretched between the first and second arches to form the intermediate sheltering space 6c.

As shown, the first arch 15a is formed by the front arch 4b of the rear assembly 1a, and the second arch 15b is formed by the two arms 8a of the front assembly 1b, in particular the aforementioned basic arms 8 a. This arrangement facilitates the manufacture of the structure 1 and thus the folding/unfolding operation of the adjustable tent.

The intermediate assembly 1c also has at least one connecting rod 15c which, in the configuration of use, connects the first arch 15a and the second arch 15b, the intermediate portion 2c of the tarpaulin 2 fitting over and along said rods to form a tunnel-shaped intermediate shelter space 6c.

In particular, the rod 15c may be separate from the first and/or second arch 15a, 15b for relative movement in the stowed configuration.

In the first embodiment shown (fig. 2 to 5), the intermediate assembly 1c has two connecting rods 15c, each of which can be detached simultaneously from the first arch 15a and the second arch 15 b.

In the second embodiment shown, the intermediate component 1c has:

an upper connecting rod 15c' extends longitudinally between the central hinge 9 and the top of the arches 4b, 15a;

four lower connecting rods 15c ", arranged in pairs on either side of a longitudinal median plane (not shown) of structure 1, each on the arch 4b, 15a;8a, 15b extend longitudinally between adjacent lower leg tubes 20;

each of these connecting rods 15c',15c "can be detached from both the front assembly 1b and the rear assembly 1 a.

As shown in fig. 2, to deploy the adjustable tent in the use configuration, the user must first place the adjustable tent in the stowed configuration on the ground with the base arch 4a resting on the ground (step 1).

The user then faces the front side arms 8b, holds the arches 4a, 4b, 4c by their upper portions, and overturns the rear assembly 1a into the use configuration (steps 2-4) by first unfolding the intermediate arch 4c (step 3) and then unfolding the front arch 4b (step 4). Thus, the rear shielding space 6a is formed.

In the second embodiment shown, the user fixes a support bar 21 on top of the base arch 4a so that it extends longitudinally obliquely at the rear of the base arch. The user then supports the lower end 22 of the rear support bar 21 on the ground with the rear assembly 1a in an upright position.

In addition, in this second embodiment, the back assembly 1a has a side rail 23 for reversibly securing between the front arch 4b and the top of the base arch 4a to stabilize the spacing of the adjustable tent in the in-use configuration.

Then, if the user wishes to create the intermediate sheltering space 6c, he simply separates the second arch 15b from the first arch 15a (step 5), and then secures the connecting rods 15c,15c',15c "between said arches, keeping them separated (step 6).

In particular, by having a structure 1 with the same front and rear assemblies 1b and 1a, the design of the adjustable tent is easy to obtain different sizes, as shown in fig. 1a, 1b and 1c, except that the size of the connecting rod 15c should be changed.

Finally, if the frontal shelter 6b is to be created, the user first pivots the side arms 8b and the upper arms 8cc forward, unfolding the frontal assembly 1b (step 7), then makes the internal portion 13 of the front portion 2b of the tarpaulin fixed to said upper arms, and in particular in the first embodiment shown, makes the pockets 14 at the ends of said internal portion advance onto the free ends 12 of said upper arms (step 8).

Then, to complete the installation of the adjustable tent, the user may deploy the outer portions of the front portion 2b of the tarpaulin (not shown) covering the side arms 8a,8b and the upper arm 8c of the front assembly 1 b.

In the second embodiment shown (fig. 6), the lower tubes of the arches 4a, 4b and arms 8a,8b, as well as the support bars 18, 21, each have two telescopic tubes for varying the length in order to adjust the height of the adjustable tent in the use configuration.

Advantageously, the front and rear portions 2b, 2a and optionally the intermediate portion 2c of the tarpaulin 2 of the adjustable tent, if any, extend continuously from the base arch 4a to the front entrance 7 of said adjustable tent.

The tarpaulin 2 may in particular have at least one area for forming a window. Such areas have, in particular, cutouts in the main fabric of the tarpaulin 2 in order to allow ventilation through the windows against which the screening spaces 6a, 6b, 6c are directed.

In particular, parts made of a fabric with a mesh, for example a mesh-type fabric, can be fitted over the openings formed by the windows to form a barrier to the entry of pests, especially stinging insects and/or blood-sucking animals, for example mosquitoes, while maintaining ventilation.

As shown, the tarpaulin 2 has in particular one transverse rear window 16a opening on the rear portion 2a and two side windows 16b extending longitudinally on either side of the central portion 2 c.

In particular, each window 16a, 16b can have a folded-over portion, which is fitted on the tarpaulin 2 so as to reversibly cover the hollows and possible meshed fabric elements, to shield the view from said window from outside the sheltered space 6a, 6b, 6c into the tent.

The front section 2b may also have an end section 17 for hanging vertically from the free end 12 of the upper arm 8c in the use configuration, shielding the entrance 7 of the adjustable tent and ensuring privacy of the tent person, for example during sleep.

Advantageously, the tarpaulin 2 may also have:

a meshed fabric panel intended to extend transversely between the front screening space 6b and the intermediate screening space 6c in the use configuration, forming a barrier against harmful animals such as mosquitoes; and/or

-a waterproof material web intended to be laid on the ground in the configuration of use, avoiding damages of the equipment in the tent due to contact with said ground.

Claims (13)

1. Adjustable tent having a structure (1) on which a tarpaulin (2) is configured to form a sheltered space for at least one person, said structure having a back assembly (1 a) with a base arch (4 a) and a front arch (4 b) supporting a back portion (2 a) of the tarpaulin (2), each of the base arch and the front arch being arched between the right and left ends, the right end being engaged in a lower right hinge (5 d), the left end being engaged in a lower left hinge (5 g) to enable the back assembly (1 a) to reversibly deploy between a stowed configuration and a use configuration, the base arch (4 a) and the front arch (4 b) being stacked flat in the use configuration of the back assembly, the front arch (4 b) being angularly spaced from the base arch (4 a) in the use configuration of the back assembly, the back portion (2 a) of the tarpaulin (2) deploying between the base arch and front arch to form a back space (6 a), said tent being characterized in that the adjustable tent (1) has an upper end of a supporting assembly (1) with a central hinge (9) engaging the front portion (1 a) of the front assembly (1 a) and a central hinge in the use configuration of the front assembly (4 b) to enable the back assembly (1 a reversibly deploy between the front arch (1 a), the front assembly (1 b) in the use configuration of the front assembly, the front assembly (10 b), in a stowed configuration of the front assembly, the arms (8 a,8 b) are folded, and in a use configuration of the front assembly, the arms (8 a,8 b) are angularly spaced apart, and a front portion (2 b) of the tarpaulin (2) is unfolded between the arms to form a front shelter space (6 b).

2. Adjustable tent according to claim 1, characterized in that the left lower hinge (5 g) and the right lower hinge (5 d) have a common rotation axis (a) extending horizontally and the central hinge (9) has a rotation axis (B) extending vertically.

3. An adjustable tent as claimed in claim 1 or 2, characterised in that the back assembly (1 a) has at least one arched central arch (4 c), the right end of which is engaged in the right lower hinge (5 d) and the left end in the left lower hinge (5 g) in order to stack the base arch (4 a), the front arch (4 b), the central arch (4 c) flat in the stowed configuration, and to deploy the central arch (4 c) between the base arch (4 a) and the front arch (4 b) in the use configuration.

4. An adjustable tent as claimed in any of claims 1 to 3, characterised in that the front assembly (1 b) has at least one set of two side arms (8a, 8b), the lower end (11) of each side arm being adapted to be supported on the ground, the set of two side arms (8a, 8b) extending to the left and right of the central hinge (9), respectively.

5. An adjustable tent as claimed in claim 4, characterised in that the front module (1 b) has a set of basic arms (8 a) and at least one set of front arms (8 b), the front arms (8 b) folding towards the basic arms (8 a) in the stowed configuration.

6. An adjustable tent as claimed in claim 5, characterized in that the basic arm (8 a) is arranged in the use configuration on one vertical Plane (PF) through which the central hinge (9) passes.

7. The adjustable tent of any of claims 1 to 6, wherein the front assembly (1 b) has at least one upper arm (8 c) whose free end (12) is deployable toward the front of the central hinge (9) in the use configuration.

8. An adjustable tent as claimed in claim 7, characterized in that the front assembly (1 b) has at least one set of two upper arms (8 c), the free ends (12) of which arms (8 c) are adapted, in the use configuration, to openings (7) in the front portion (2 b) of the tent cloth (2) allowing access to the front sheltering space (6 b).

9. An adjustable tent as claimed in any one of claims 1 to 8, characterized in that the structure (1) has an intermediate module (1 c) arranged between the front module (1 b) and the rear module (1 a), from which intermediate module the intermediate part (2 c) of the tent cloth (2) is configured so as to form an intermediate sheltered space (6 c).

10. An adjustable tent as claimed in claim 9, characterised in that the intermediate module (1 c) has a first arch (15 a) connected to the rear module (1 a) and a second arch (15 b) connected to the front module (1 b), which are reversibly movable between a stowed configuration in which they are vertically stacked and a use configuration in which they are longitudinally spaced apart, the intermediate portion (2 c) of the tarpaulin (2) being stretched between the first and second arches to form an intermediate sheltered space (6 c).

11. An adjustable tent as claimed in claim 10, characterised in that the first arch (15 a) is formed by the front arch (4 b) of the rear assembly (1 a).

12. An adjustable tent as claimed in claim 10 or 11, characterized in that the second arch (15 b) is formed by two arms (8 a) of the front module (1 b).

13. Adjustable tent according to any of the claims 10 to 12, characterized in that the intermediate module (1 c) has at least one connecting rod (15c, 15c',15c ") which in the configuration of use connects the first arch (15 a) and the second arch (15 b), the intermediate portion (2 c) of the tarpaulin (2) fitting to and along said first and second arch so as to form a tunnel-shaped intermediate sheltering space (6 c).

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