WO2022084637A1

WO2022084637A1 - Bag defining a variable-volume storage space

Info

Publication number: WO2022084637A1
Application number: PCT/FR2021/051856
Authority: WO
Inventors: Edouard MONTHIERS
Original assignee: Les Editions Jomont
Priority date: 2020-10-22
Filing date: 2021-10-22
Publication date: 2022-04-28
Also published as: FR3115443B1; FR3115443A1

Abstract

Bag (1) comprising walls (2, 4, 6, 8) defining between one another a storage space (10), the walls comprising: a first wall (2) comprising an inner flank (28) and an outer flank (30) defining between one another a gap (32) separated from the storage space (10) by the inner flank (28), and a second wall (6) that is movable with respect to the first wall (2), the second wall (6) comprising a wing (86) that is able to be retracted towards the inside of the gap (32) so as to reduce the volume of the storage space (10), and to be deployed towards the outside of the gap so as to increase the volume of the storage space (10).

Description

DESCRIPTION

TITLE: bag defining a variable volume storage space

FIELD OF THE INVENTION

The present invention relates to a bag defining a variable volume storage space.

STATE OF THE ART

Known from the state of the art is a bag comprising a front wall, a rear wall and two side walls defining between them a storage space. The side walls include one or more bellows that can be deformed to vary the volume of the storage space.

However, it is not easy to precisely adjust the desired volume, because the shape of the bellows is not finely controllable.

Also, the bellows protrude into the storage space, which is a substantial waste of space.

DISCLOSURE OF THE INVENTION

An object of the invention is to adjust the volume of a bag more precisely and without loss of space.

To this end, a bag is proposed comprising walls defining between them a storage space, the walls comprising:

- a first wall comprising an internal side and an external side defining between them a gap separated from the storage space by the internal side,

- a second wall movable with respect to the first wall, the second wall comprising a wing capable of being retracted towards the inside of the interstice so as to reduce the volume of the storage space, and deployed towards the outside of the gap so as to increase the volume of the storage space.

As the inner sidewall separates the storage space from the gap where the wing retracts, this wing does not protrude into the storage space as a bellows would. As a result, the wing does not in any way impede the insertion of a large object into the storage space.

Furthermore, the wing is retracted in a gap which is made between the inner flank and the outer flank. These two sides make it possible to guide the retraction of the wing, which has the consequence of which is that it is possible for a user to adjust the volume of the storage space more finely than with bellows.

The proposed bag can also include the following characteristics taken alone or combined with each other whenever it makes technical sense.

Preferably, the wing is adapted to be retracted towards the inside of the gap by rotation of the second wall relative to the first wall.

Preferably, the bag comprises a base forming a bottom of the storage space, and the second wall is connected to the base by a rectilinear fold, the wing being adapted to be retracted towards the inside of the gap by pivoting of the second wall relatively to the base around the rectilinear fold.

Preferably, the outer side defines an orifice opening into the gap and outside the bag, the bag also comprising a strap connected to the wing, extending partly into the gap and crossing the orifice, the strap being capable of causing the wing to retract towards the inside of the gap when a user pulls on the strap so as to move it away from the first wall.

Preferably, the first wall has:

- a first edge defining access to the gap, the access being crossed by the wing,

- a second edge opposite the first edge with respect to the gap, the orifice being closer to the second edge than to the first edge.

Preferably, the bag includes:

- a base forming a bottom of the storage space,

- a loop located in the gap between the orifice and the wing and crossed by the strap, the loop being arranged with respect to the orifice so that the strap extends parallel to the base when the user pulls on it the strap.

Preferably, the bag comprises a loop located in the gap between the orifice and the wing and through which the strap passes, the loop forming a stop limiting the retraction path of the wing inside the gap.

Preferably, the bag comprising abutment elements capable of preventing the wing from fully extending out of the gap, when the wing is deployed towards the outside of the gap.

Preferably, the abutment elements comprise:

- at least a first rod fixed to the first wall to stiffen it, - At least one second rod fixed to the second wall to stiffen it, and arranged to come into abutment on the first rod when the wing is deployed towards the outside of the gap.

Preferably:

- the walls comprise a third wall opposite the first wall with respect to the storage space, the third wall comprising another internal flank and another external flank defining between them another interstice separated from the storage space by the other internal flank,

- the second wall comprises another wing able to be retracted towards the inside of the other interstice so as to reduce the volume of the storage space, and deployed towards the outside of the other interstice so as to increase the volume of storage space.

Preferably, the other outer flank defines an orifice opening into the other interstice and outside the bag, the bag also comprising a strap connected to the wing, extending partly into the other interstice, crossing the orifice defined by the other outer flank, and being capable of causing retraction of the other wing inside the other interstice when a user pulls on the strap so as to move it away from the first wall.

Preferably, the strap connected to the wing and the strap connected to the other wing are connected to each other, for example by an adjustable position connection.

Preferably, the walls comprise a fourth wall opposite the second wall with respect to the storage space, the fourth wall being movable with respect to the first wall and comprising a wing able to be retracted towards the interior of the interstice so as to reduce the volume of the storage space, and deployed towards the exterior of the gap so as to increase the volume of the storage space.

Preferably, the outer side defines another orifice opening into the gap and outside the bag, the bag also comprising another strap connected to the wing of the fourth wall, extending partly into the gap and passing through the other orifice, and being capable of causing retraction of the wing of the fourth wall inside the interstice when a user pulls on the other strap so as to move it away from the first wall.

Preferably, the bag includes:

- a base forming a bottom of the storage space,

- a loop located in the gap between the other hole and the wing of the fourth wall, the loop being crossed by the other strap and being arranged with respect to the other hole so that the other strap extends parallel to the base when the user pulls on the other strap. Preferably, the fourth wall comprises another wing able to be retracted towards the inside of the other interstice so as to reduce the volume of the storage space, and deployed towards the outside of the other interstice so as to increase the volume of the storage space.

Preferably, the other outer flank defines another orifice opening into the other interstice and outside the bag, the bag also comprising another strap connected to the other wing of the fourth wall, extending in part in the other interstice and crossing the orifice defined by the other external flank, and being capable of causing a retraction of the other wing of the fourth wall inside the other interstice when a user pulls on the other strap so as to keep it away from the third wall.

Preferably, the strap connected to the wing of the fourth wall and the strap connected to the other wing of the fourth wall are connected to each other, for example by an adjustable position connection.

DESCRIPTION OF FIGURES

Other characteristics, objects and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting, and which must be read in conjunction with the appended drawings in which:

Figure 1 is a perspective front view of a bag according to one embodiment.

Figure 2 is a partial front perspective view of the bag of Figure 1.

Figure 3 is a perspective partial rear view of the bag of Figure 1.

Figure 4 is another perspective rear view of the bag of Figure 1.

Figure 5 is another perspective front view of the bag of Figure 1.

Figure 6 is a front view of the bag of Figure 1, in an expanded state.

Figure 7 is a front view of the bag of Figure 1, in a retracted state.

Figure 8 is a rear view of the bag of Figure 1.

Figure 9 is a partial cross-sectional view in a horizontal plane of the bag of Figure 1.

In all the figures, similar elements bear identical references.

DETAILED DESCRIPTION OF THE INVENTION

Referring to Figure 1, a bag 1 according to one embodiment comprises walls 2, 4, 6, 8, these walls defining between them a storage space 10. The walls 2, 4, 6, 8 also delimit an upper opening 12 of the bag 1 giving access to the storage space 10.

Bag 1 also comprises a base 1 . The base 14 forms a bottom of the storage space 10 opposite the upper opening 12 with respect to this space. Each of the walls is connected to the base 14.

The base 14 is for example of rectangular shape.

The walls include a front wall 2, a rear wall 4, and two side walls. The front wall 2 and the rear wall 4 are opposed to each other with respect to the storage space 10. Similarly, the two side walls are opposite to each other with respect to the space storage 10.

The bag 1 also comprises two handles: a front handle 16 fixed to the front wall 2, and a rear handle 18 fixed to the rear wall 4.

Referring to Figure 2, the front wall 2 is connected to the base 14 by a rectilinear connecting fold 20, more precisely to a large edge of the rectangle formed by the base 14.

The front wall 2 also defines an upper front edge 22 of the upper opening 12. This upper front edge 22 is parallel to the connecting ply 20.

The front wall 2 also has two side edges 24, 26 opposite to each other. The two opposite side edges 24, 26 connect the connecting ply to the upper front edge 22. The two side edges 24, 26 extend transversely to the connecting ply 20 and to the upper front edge 22, for example perpendicular to the connecting ply 20 and/or to the upper front edge 22. The side edges are 24, 26 rectilinear, parallel.

The front wall 2 comprises an internal flank 28 and an external flank 30 defining between them a front gap 32.

The inner flank 28 and the outer flank 30 are arranged side by side. More precisely, they are planar and coplanar. They have substantially the same dimensions. The internal flank 28 and the external flank 30 are rectangular.

The front gap 32 has a thickness, measured transversely to the two flanks 28, 30 (that is to say as a distance separating the flanks 28, 30 from each other), which is much less than its width. and its height. This thickness is typically less than 1 centimeter.

Two slots 34, 36 are respectively formed in the two opposite side edges, 24, 26 so as to form two opposite accesses to the front gap 32. The outer side 30 defines a front side of the bag 1 visible from the outside.

The outer side 30 defines a first orifice 38 opening into the front gap 32 and opening into the front side, therefore outside the bag 1. The first orifice 38 is closer to the side edge 24 than to the other side edge 26. The first orifice is also closer to the upper front edge 22 than to the connecting ply 20.

The outer side 30 also defines a second orifice 40 opening into the front gap 32 and opening into the front side, therefore outside the bag 1. The second orifice 40 is closer to the side edge 26 than to the other side edge 24. The second orifice is also closer to the upper front edge 22 than to the connecting ply 20.

The two orifices 38, 40 are arranged at the same height, that is to say at the same distance from the connecting ply. Furthermore, the distance between the first orifice 38 and the connecting ply 20 is for example equal to the distance between the second orifice and the connecting ply 20.

The inner side 28 separates the storage space 10 from the front interstice 32. An object introduced into the storage space 10 of the bag 1 through the upper opening 12 cannot therefore reach the front interstice 32.

The inner side 28 is for example connected to the outer side 30 by an upper fold forming the upper front edge 22. In this case, the inner side 28 is formed by being folded towards the inside of the bag 1 at 180 degrees relative to the side external 30.

The bag 1 comprises a loop 42 arranged in the front gap 32. The loop is typically arranged at mid-width of the front wall 2, that is to say that the loop is at equal distance from the side edge 24 and from the other side edge 26.

The loop 42 is also closer to the upper front edge 22 than to the connecting ply 20. The loop 42 is arranged substantially at the same height as the two orifices 38, 40 formed in the outer side 30.

The outer side 30 and the inner side 28 are made of a relatively flexible material, for example leather or textile.

Referring to Figure 3, the rear wall 4 is connected to the base 14 by a rectilinear connecting fold 50, more precisely to a large edge of the rectangle formed by the base 14.

The rear wall 4 also defines a rear upper edge 52 of the upper opening 12. This rear upper edge 52 is parallel to the connecting ply 50.

The rear wall 4 also has two side edges 54, 56 opposite to each other. The two opposite side edges 54, 56 connect the connecting ply to the upper edge back 52. The two side edges 54, 56 extend transversely to the connecting ply 50 and to the upper rear edge 52, for example perpendicular to the ply 50 and/or to the upper rear edge 52. The side edges are 54, 56 rectilinear, parallels.

The rear wall 4 comprises an inner flank 58 and an outer flank 60 defining between them a rear gap 62.

The inner flank 58 and the outer flank 60 are arranged side by side. More precisely, they are planar and coplanar. They have essentially the same dimensions. The inner flank 58 and the outer flank 60 are rectangular.

The rear gap 62 has a thickness, measured transversely to the two flanks 58, 60 (that is to say as a distance separating the flanks 58, 60 from each other), which is much less than its width. and its height. This thickness is typically less than 1 centimeter.

Two slots 64, 66 are respectively formed in the two opposite side edges, 54, 56 so as to form two opposite accesses to the rear gap 62.

The outer side 60 defines a rear side of the bag 1 visible from the outside.

The outer side 60 defines a first orifice 68 opening into the rear gap 62 and opening into the rear side, therefore outside the bag 1. The first orifice 68 is closer to the side edge 54 than to the other side edge 56. The first orifice is also closer to the upper rear edge 52 than to the connecting fold 50.

The outer side 60 also defines a second orifice 70 opening into the rear gap 62 and opening into the rear side, therefore outside the bag 1. The second orifice 70 is closer to the side edge 56 than to the other side edge 54. The second orifice is also closer to the rear upper edge 52 than to the connecting fold 50.

The two orifices 68, 70 are arranged at the same height, that is to say at the same distance from the connecting ply. Furthermore, the distance between the first orifice 68 and the connecting ply 50 is for example equal to the distance between the second orifice and the connecting ply 50.

The inner side 58 separates the storage space 10 from the rear gap 62. An object introduced into the storage space 10 of the bag 1 through the upper opening 12 cannot therefore reach the rear gap 62.

The inner side 58 is for example connected to the outer side 60 by an upper fold forming the upper rear edge 52. In this case, the inner side 58 is formed by being folded towards the inside of the bag 1 at 180 degrees relative to the side external 60. The bag 1 comprises a loop 72 arranged in the rear gap 62. The loop is typically arranged at mid-width of the rear wall 2, that is to say that the loop is at equal distance from the side edge 54 and from the other side edge 56.

The loop 72 is also closer to the upper rear edge 52 than to the connecting ply 50. The loop 72 is arranged substantially at the same height as the two orifices 68, 70 formed in the outer side 60.

The outer flank 60 and the inner flank 58 are made of a relatively flexible material, for example leather or textile.

Ultimately, the rear wall 4, opposite the front wall 2 with respect to the storage space 10 has the same characteristics as the front wall 2. The rear wall 4 and the front wall 2 are for example symmetrical with respect to a plan.

Referring to Figure 4, the side wall 6 is connected to the base 14 by a rectilinear connecting fold 80, more precisely to a small edge of the rectangle formed by the base 14.

The side wall 6 also defines an upper edge 82 partly delimiting the upper opening 12. This upper edge 82 is opposite the connecting ply 80.

The side wall 6 comprises a central part 84 defining the connecting fold 80 and a rectilinear part of the upper edge 82. The central part 84 is able to assume a rectangular shape.

The side wall 6 also comprises two wings 86, 88 opposite each other with respect to the central part 84. Each wing 86, 88 defines a curved part of the upper edge 82. Each wing 86, 88 is connected to the central part 84, for example by a lateral fold 90, 92 (it being understood that these lateral folds are optional). If present, the side folds 90, 92 are opposite one another with respect to the central part 80 and extend transversely to the connecting fold 80, for example perpendicular to this fold 80. In the absence of these side folds, the side wall 6 has a curved profile at 180 degrees in a horizontal section plane parallel to the upper opening 12 and/or the base 14, that is to say when looking at the bag 1 seen from above, looking towards the back of storage space 10.

The two wings 86, 88 face each other. They can in particular be arranged so as to be parallel.

The wing 86 defines a side edge 96 of the side wall 6. This side edge 96 is inclined relative to the side folds 90, 92, for example by an angle between 0 and 90 degrees, preferably between 10 and 45 degrees, for example 22 degrees. The side edge 96 is straight.

The wing 86 extends at least partially into the front gap 32. The wing 86 passes through the slot 34 formed in the side edge 24 of the front wall 2. In particular, the side edge 96 is in the gap 32.

Similarly, the wing 88 defines a side edge 98 of the side wall 6, opposite the side edge 96. This side edge 98 is inclined with respect to the side folds 90, 92, for example by an angle comprised between 10 and 45 degrees. , for example 22 degrees. The side edge 98 is straight. Side edges 96, 98 can be arranged to be parallel.

The wing 88 extends at least partially into the rear gap 62. The wing 88 passes through the slot 64 formed in the side edge 54 of the rear wall 4. In particular, the side edge 98 is in the gap 62.

In general, the side wall 6 is rotatable relative to the base 14. When the side wall 6 is rotated relative to the base 14 in a first direction of rotation, its two wings 86, 88 are respectively retracted inside the interstices 32, 62. When the side wall 6 is turned relative to the base 14 in a second direction of rotation opposite to the first direction of rotation, its two wings 86, 88 are deployed towards the outside of these interstices 32, 62, emerging through the slots 34, 64.

Due to the existence of the connecting ply 80, the rotational movement of the side wall 6 with respect to the base 14 is a pivoting.

The loops 42, 72 limit the retraction travel of the wings 86, 88 towards the interior of the interstices 32, 62. Indeed, during the retraction of the wings, the side edges 96, 98 respectively come into abutment on these loops 42 , 72. When the loops 42, 72 are arranged at mid-width of the front 2 and rear 4 walls, as is the case of the embodiment illustrated in the figures, the wings 86, 88 cannot go beyond from the middle of these walls 2, 4.

Referring to Figure 5, the side wall 8 is connected to the base 14 by a rectilinear connecting fold 110, more precisely to a small edge of the rectangle formed by the base 14.

The side wall 8 also defines an upper edge 112 partly delimiting the upper opening 12. This upper edge 112 is opposite the connecting ply 110.

The side wall 8 comprises a central part 114 defining the connecting fold 110 and a rectilinear part of the upper edge 112. The central part 114 is able to assume a rectangular shape. The side wall 8 also comprises two wings 116, 118 opposite each other with respect to the central part 114. Each wing 116, 118 defines a curved part of the upper edge 112. Each wing 116, 118 is connected to the central part 114 by a side fold 120, 122 (it being understood that the side folds 120, 122 are optional). If present, the side folds 120, 122 are opposite one another with respect to the central part 110 and extend transversely to the connecting fold 110, for example perpendicular to this fold 110. In the absence of these lateral folds 120, 122, the side wall 8 presents a curved profile at 180 degrees in a horizontal section plane parallel to the upper opening 12 and/or the base 14, i.e. when looking the bag 1 seen from above, looking towards the back of the storage space 10.

The two wings 116, 118 face each other. They can in particular be arranged so as to be parallel.

The wing 116 defines a side edge 128 of the side wall 8. This side edge 128 is inclined relative to the side folds 120, 122, for example by an angle between 0 and 90 degrees, preferably 10 and 45 degrees, by example 22 degrees. The side edge 128 is straight.

The wing 116 extends at least partly into the front gap 32. The wing passes through the slot 36 formed in the side edge 26 of the front wall 2. In particular, the side edge 128 is in the gap 32 .

Similarly, the wing 118 defines a side edge 126 of the side wall 8, opposite the side edge 126. This side edge 126 is inclined relative to the side folds 120, 122, for example by an angle between 10 and 45 degrees. , for example 22 degrees. The side edge 126 is straight. Side edges 126, 128 can be arranged to be parallel.

The wing 118 extends at least partially into the rear gap 62. The wing 118 passes through the slot 66 formed in the side edge 56 of the rear wall 4. In particular, the side edge 126 is in the gap 62.

In general, the side wall 8 is rotatable relative to the base 14. When the side wall 8 is rotated relative to the base 14 in a first direction of rotation, its two wings 116, 118 are respectively retracted inside the interstices 32, 62. When the side wall 8 is turned relative to the base 14 in a second direction of rotation opposite to the first direction of rotation, its two wings 116, 118 are deployed towards the outside of these interstices 32, 62, coming out through the slots 36, 66. Due to the existence of the connecting ply 110, the rotational movement of the side wall 8 with respect to the base 14 is a pivoting.

The loops 42, 72 limit the retraction travel of the wings 116, 118 towards the interior of the interstices 32, 62. Indeed, during the retraction of the wings, the side edges 126, 128 respectively come into abutment on these loops 72 , 42. When the loops 42, 72 are arranged at mid-width of the front 2 and rear 4 walls, as is the case of the embodiment illustrated in the figures, the wings 116, 118 cannot go beyond from the middle of these walls 2, 4.

Ultimately, the side wall 8 includes characteristics similar to those of the side wall 6. The side walls 6, 8 are for example symmetrical with respect to a plane.

Ultimately, each of the interstices 32, 62 receives two wings. The front gap 32 receives the wings 86 and 116, and the rear gap 62 also receives the wings 88, 118.

Referring to Figure 6, the bag 1 also comprises a strap 130. The strap 130 is connected to the wing 116 which enters the gap 32 through the access 36. The strap 130 comprises in particular two cords connected to the wing 116. The strap 130 also passes through the outer side 30 through the orifice 38 which is closer to the access 34 than to the opposite access 36. A part of the strap 130 is therefore outside the bag 1. A user can grab hold of this part and pull on the strap 130 so as to move it away from the front wall 2. The strap 130 then stretches from rectilinear manner between the loop 42 and the orifice 38, slides in the loop 42 and causes the retraction of the wing 116 towards the loop 42, thus causing the side wall 8 to pivot relative to the front wall 2. In doing so, the volume of the storage space 10 is reduced, as is the perimeter of the upper opening 12, as can be seen in FIG. 7. The user can in particular pull on the strap 130 in a direction parallel to the front wall 2, or even in a direction parallel to the upper front edge 22.

The bag 1 also comprises a strap 132. The strap 132 is connected to the wing 86 which enters the gap 32 through the access 34. The strap 132 comprises in particular two cords connected to the wing 86. The strap 132 also passes through the outer flank 30 through the orifice 40 which is closer to the access 36 than to the opposite access 34. Part of the strap 132 is therefore outside the bag 1 . A user can grab this part and pull on the strap 132 so as to move it away from the front wall 2. The strap 132 then stretches straight between the loop 42 and the orifice 40, slides in the loop 42 and causes the retraction of the wing 86 towards the loop 42, thus causing the side wall 6 to pivot relative to the front wall 2. In doing so, the volume of the storage space 10 is reduced, as well as the perimeter of the upper opening 12, as can be seen in FIG. 7. The user can in particular pull on the strap 132 in a direction parallel to the front wall 2, or even in a direction parallel to the upper edge before 22.

The strips 130, 132 intersect in the gap 32. To ensure this crossing, the loop 42 can include separate passages for the respective cords of the strips 130, 132.

Referring to Figure 8, the bag 1 also comprises a strap 134. The strap 134 is connected to the wing 118 which enters the gap 62 through the access 66. The strap 134 comprises in particular two cords connected to the wing 118. The strap 134 also passes through the outer side 60 through the orifice 68 which is closer to the access 64 than to the opposite access 66. Part of the strap 134 is therefore outside the bag 1. A user can grab hold of this part and pull the strap 134 so as to move it away from the rear wall 4. The strap 134 then stretches from rectilinear manner between the loop 72 and the orifice 68, slides in the loop 72 and causes the retraction of the wing 118 towards the loop 72, thus causing the side wall 8 to pivot relative to the rear wall 4. In doing so, the volume of the storage space 10 is reduced, as is the perimeter of the upper opening 12. The user can in particular pull on the strap 134 in a direction parallel to the rear wall 4, or even in a direction parallel to the edge upper rear 52.

The bag 1 also comprises a strap 136. The strap 136 a connected to the wing 88 which penetrates the gap 62 through the access 64. The strap 136 comprises in particular two cords connected to the wing 88. The strap 136 also passes through the outer flank 60 through the orifice 70 which is closer to the access 66 than to the opposite access 64. Part of the strap 136 is therefore outside the bag 1 . A user can grasp this part and pull on the strap 136 so as to move the strap 136 away from the rear wall 4. The strap 136 then stretches straight between the loop 72 and the orifice 70, slides in the passing 72 and causes the retraction of the wing 88 towards the passing 72, thus causing the side wall 6 to pivot relative to the rear wall 4. In doing so, the volume of the storage space 10 is reduced, as is the perimeter of the upper opening 12. The user can in particular pull on the strap 136 in a direction parallel to the rear wall 4, or even in a direction parallel to the upper rear edge 52.

The strips 134, 136 intersect in the gap 62. To ensure this crossing, the loop 72 may include separate passages for the respective cords of the strips 134, 136.

The user can simultaneously retract the wings 86, 116, into the front wall 2, by pulling the strap 130 with one hand in one direction, and simultaneously pulling the strap 132 with his other hand in an opposite direction. Thus, in a single simple and intuitive gesture, the volume of the storage space can be greatly reduced.

The user can also simultaneously retract the wings 88, 118, into the rear wall 4, by pulling the strap 134 with one hand in one direction, and simultaneously pulling the strap 136 with his other hand in an opposite direction. The volume of the storage space can thus be greatly reduced with this alternative gesture.

The straps 130, 134 can be connected to each other, preferably by an adjustable position connection, such as a user-untiable knot or other equivalent means (bridle, slider, etc.). Similarly, the straps 132, 136 can be connected to each other, for example by an adjustable position connection, such as a knot that can be untied by a user or other equivalent means (bridle, slider, etc. ). The user can thus simultaneously retract the four wings 86, 88, 116, 118 in the front 2 and rear 4 walls, by pulling on the pair of straps 130, 134 with one hand in one direction, and simultaneously pulling on the another pair of strips 132, 136 in an opposite direction. Thus, in a single simple and intuitive gesture, the volume of the storage space can be greatly reduced, while balancing the levels of retraction of the four wings in the front 2 and rear 4 walls, and thus ensuring that the bag 1 maintains a certain level of symmetry.

The fact that connecting the straps in pairs makes it possible to form two brakes limiting the deployment travel of the wings 86, 88, 116, 118 towards the outside of the interstices 32, 62. By tying the straps using an adjustable position link (such as knots), it is possible to adjust the length of this deployment stroke.

It was previously stated that the retract travel of the wings was limited by passers-by.

The deployment stroke of a wing is also limited using stop elements. These stop elements are suitable for preventing a complete extension of a wing out of the corresponding gap, when the wing is deployed towards the outside of the gap.

Referring to Figure 9, the bag 1 includes abutment elements suitable for limiting the displacement travel of one of the side walls 6, 8.

More precisely, the bag comprises abutment elements capable of limiting the retraction stroke of the wing 86 towards the inside of the front gap 32. In particular, the loop 42 limits this retraction stroke, since the edge 96 ends by coming into contact with this passer-by 42 during the retraction of the wing 86 towards the inside of the front gap 32. More precisely, the bag comprises abutment elements suitable for limiting the deployment travel of the wing 86 towards the outside of the front gap 32, so as to prevent a complete extension of the wing 86 out of the gap. 32, when the wing 86 is deployed outward from the gap 32.

The abutment elements limiting this deployment stroke comprise on the one hand the loop 42 and the strap 132. It has in fact been seen previously that the strap 132 is connected to the wing by thin cords which pass through corresponding passages defined in the loop 42. The strap 132 also comprises a portion of larger diameter than the cords and these passages. This part of larger diameter, preferably made of a noble material, is intended to pass through the orifice 40, while the cords are intended to remain inside the front gap 32. During the deployment of the wing 86, this part of larger diameter comes into abutment against the loop 42 because it cannot cross the passages crossed by the cords, of smaller diameters.

The abutment elements limiting the deployment travel of the wing 86 also comprise at least one rod 140, 142 fixed to the front wall 2, and at least one rod 144, 146 fixed to the side wall 6. Each rod 144, 146 fixed to the side wall 6 is arranged to come into abutment on a corresponding ring 140, 142 fixed to the front wall 2 when the wing 86 is deployed towards the outside of the gap 32.

Each rod 140, 142 fixed to the front wall 2 runs along the side edge 24. Each first rod 140, 142 has a rectilinear shape. Each first rod 140, 142 extends into the gap 32. It locally reduces the thickness of the gap 32. The two rods 140, 142 are parallel.

Each rod 144, 146 fixed to the side wall 6 runs along the edge 96. Each rod 144, 146 fixed to the side wall 6 has a rectilinear shape. Each second rod 144, 146 fixed to the side wall 6 extends into the gap 32. It makes it possible to locally increase the thickness of the wing 86. Each rod 144, 146 fixed to the side wall 6 pivots with respect to to the rod 140 or 142 during the deployment of the wing 86. When the rod 144 or 146 comes into abutment with the corresponding rod 140 or 142, the two rods in contact are parallel.

The rod 140 is fixed to the internal side 28, and the rod 144 is facing the internal side 28. The rods 140 and 144 come into abutment against each other during the deployment of the wing 86 towards the outside of gap 32.

The rod 142 is fixed to the outer side 30, and the rod 144 is facing the outer side 30. The rods 142 and 146 come into abutment against each other during the deployment of the wing 86 towards the outside of gap 32. Each first rod 140, 12 is made of a stiffer material than that of the sides 28, 30. Consequently, each first rod 140, 142 fulfills two functions: contributing to limiting the deployment stroke of the wing 86 and also stiffening the front wall 2.

Similarly, each second rod 144, 146 is made of a stiffer material than that of the wing 86. Consequently, each second rod 144, 146 fulfills two functions: contributing to limiting the deployment travel of the wing 86 and also stiffen the side wall 6, which has the advantage of limiting the number of parts of the bag.

The rods 140, 142, 144, 146 are for example made of carbon. This material has the advantage of offering a satisfactory compromise between rigidity and lightness.

Of course, a single pair of rods is enough to make it possible to limit the deployment stroke of the wing 86. It is also possible to keep only three rods among the four rods 140, 142, 144, 146 by omitting one of the two rods fixed to the wing 86. It is indeed advantageous to combine the rods 140 and 142 to better stiffen the front wall 2 at its inner side 28 and its outer side 30.

Of course, the stop elements described above in relation to the wing 86 and the strap 132 are also applicable to the other wings 88, 116, 118 and to the other straps 130, 134, 136 of the bag 1, in order to limit the displacement path of these wings.

The invention is not limited to the bag 1 shown in the figures, which is only one embodiment. In particular, the following modifications can be made to bag 1 .

• The walls 2, 4, 6, 8 can have other shapes than those shown in the figures.

• The base 14 is optional or in any case reducible to a connecting fold directly connecting the front wall 2 to the rear wall 4 (in other words, the connecting folds 20, 50 are in this case combined). Furthermore, the connecting folds 80, 110 can then be reduced to a point. It is therefore possible that the wings do not strictly observe a pivoting movement.

• The bag 1 shown in the figures is provided with four wings 86, 88, 116, 118 retractable in two interstices 32, 62. Alternatively, the bag could include a number of lower wings (one, two or three). Only one of the side walls 6, 8 could be provided with a single or two wings.

• It is certainly advantageous for the wing of a side wall 6 or 8 to retract inside a corresponding gap by rotational movement of this side wall relative to the wall defining the gap. But it could be provided as a variant a wing moving in translation in a gap. • The embodiment illustrated in the figures comprises two loops 42, 72, each of these loops being crossed by two straps. As a variant, one loop could be provided for each strap.

• The position of loops 42, 72 and orifices 38, 40, 68, 70 can also be subject to variations. In particular, these loops or orifices can be located closer to the link folds 20, 50 than to the upper edges 22, 52, in particular when the rotation path of the wings approaches 90 degrees.

• Although advantageous because of their guiding function, the loops 42, 72 remain optional.

• In the embodiment illustrated in the figures, the front wall 2 and the rear wall 4 each define a single gap receiving two wings. As a variant, one or the other of these walls 2, 4 could comprise an intermediate flank arranged between its internal flank and its external flank, so as to define two interstices instead of just one: an internal interstice defined between the inner flank and the intermediate flank, and an outer gap defined between the outer flank and the intermediate flank, the intermediate flank separating the inner gap from the outer gap. The internal gap receives a flange from one of the side walls 6 or 8, while the external gap receives a flange from the other side wall. These two wings can therefore cross without interfering with each other.

Claims

1. Bag (1) comprising walls (2, 4, 6, 8) defining between them a storage space (10), the walls comprising:

- a first wall (2) comprising an internal flank (28) and an external flank (30) defining between them a gap (32) separated from the storage space (10) by the internal flank (28),

- a second wall (6) movable relative to the first wall (2), the second wall (6) comprising a wing (86) able to be retracted towards the inside of the gap (32) so as to reduce the volume of the storage space (10), and be deployed outward from the gap so as to increase the volume of the storage space (10).

2. Bag (1) according to the preceding claim, wherein the wing (86) is adapted to be retracted inwardly of the gap (32) by rotation of the second wall (6) relative to the first wall ( 2).

3. Bag (1) according to one of the preceding claims, further comprising a base (1) forming a bottom of the storage space (10), and wherein the second wall (6) is connected to the base ( 14) by a rectilinear fold (80), the wing being adapted to be retracted towards the inside of the gap (32) by pivoting the second wall (6) relative to the base (14) around the rectilinear fold ( 80).

4. Bag (1) according to one of the preceding claims, wherein the outer side (30) defines an orifice (40) opening into the gap (32) and outside the bag (1), the bag ( 1) further comprising a strap (132) connected to the wing (86), extending partly into the gap (32) and passing through the orifice (40), the strap (132) being able to cause a retraction of the wing (86) towards the inside of the gap (32) when a user pulls on the strap (132) so as to move it away from the first wall (2).

5. Bag (1) according to the preceding claim, wherein the first wall has:

- a first edge (24) defining an access (34) to the gap, the access (34) being crossed by the wing (86),

- a second edge (26) opposite the first edge (24) with respect to the gap (32), the orifice (40) being closer to the second edge (26) than to the first edge (24).

6. Bag (1) according to one of claims 5 and 6, further comprising:

- a base (14) forming a bottom of the storage space (10),

- a loop (42) located in the gap between the orifice (40) and the wing (86) and crossed by the strap (132), the loop (42) being arranged with respect to the orifice (40) such that the strap (132) extends parallel to the base (14) when the user pulls on the strap (132).

7. Bag (1) according to one of claims 5 to 7, comprising a loop (42) located in the gap between the orifice (40) and the wing (86) and crossed by the strap (132), the loop (42) forming an abutment limiting the retraction travel of the wing inside the gap (32).

8. Bag (1) according to one of the preceding claims, comprising stop elements (140, 142, 144, 146) adapted to prevent a complete exit of the wing (86) out of the gap (32), when the wing (86) is deployed outward from the gap (32).

9. Bag (1) according to the preceding claim, wherein the abutment elements comprise:

- at least one first rod (140, 142) fixed to the first wall (2) to stiffen it,

- at least one second rod (144, 146) fixed to the second wall (6) to stiffen it, and arranged to come into abutment on the first rod when the wing is deployed towards the outside of the gap (32) .

10. Bag (1) according to one of the preceding claims, wherein:

- the walls comprise a third wall (4) opposite the first wall (2) with respect to the storage space (10), the third wall (4) comprising another internal flank (58) and another external flank ( 60) defining between them another gap (62) separated from the storage space (10) by the other internal side (58),

- the second wall (6) comprises another wing (88) able to be retracted towards the interior of the other interstice (62) so as to reduce the volume of the storage space (10), and to be deployed towards outside the other gap (62) so as to increase the volume of the storage space (10).

11. Bag (1) according to the preceding claim, wherein the other outer side (60) defines an orifice (70) opening into the other gap (62) and outside the bag (1), the bag ( 1) further comprising a strap (136) connected to the wing, extending partly into the other gap (62), passing through the orifice (70) defined by the other outer flank (60), and being capable of causing retraction of the other wing (88) inside the other interstice when a user pulls on the strap (136) so as to move it away from the first wall (2).

12. Bag (1) according to the preceding claim in its dependence on claim 4, wherein the strap (132) connected to the wing (86) and the strap (136) connected to the other wing (88) are connected to each other, for example by an adjustable position link.

13. Bag (1) according to one of the preceding claims, wherein the walls comprise a fourth wall (8) opposite the second wall (6) with respect to the storage space (10), the fourth wall (8 ) being movable relative to the first wall (2) and comprising a wing (116) adapted to be retracted towards the inside of the gap (32) so as to reduce the volume of the storage space (10), and deployed towards the outside of the gap (32) so as to increase the volume of the storage space (10).

14. Bag (1) according to one of the preceding claims, wherein the outer side defines another orifice (38) opening into the gap and outside the bag (1), the bag (1) further comprising another strap (130) connected to the wing (116) of the fourth wall (8), extending partly into the interstice (32) and crossing the other orifice (38), and being able to cause a retraction of the wing (116) of the fourth wall (8) inside the gap (32) when a user pulls on the other strap (130) so as to move it away from the first wall (2).

15. Bag (1) according to the preceding claim, comprising:

- a base (14) forming a bottom of the storage space (10),

- a loop (42) located in the gap (32) between the other orifice (38) and the wing (116) of the fourth wall (8), the loop (42) being crossed by the other strap ( 130) and being arranged with respect to the other orifice (38) so that the other strap (130) extends parallel to the base (14) when the user pulls on the other strap (130).

16. Bag (1) according to claims 13 to 15 in their dependence on claim 10, wherein the fourth wall (8) comprises another wing (118) able to be retracted towards the inside of the other gap (62 ) so as to reduce the volume of the storage space (10), and deployed towards the outside of the other gap (62) so as to increase the volume of the storage space (10).

17. Bag (1) according to the preceding claim, wherein the other outer flank (60) defines another orifice (68) opening into the other gap and outside the bag (1), the bag (1) further comprising another strap (134) connected to the other wing (118) of the fourth wall (8), extending partly into the other interstice and passing through the orifice defined by the other external flank, and being capable of causing retraction of the other wing (118) of the fourth wall (8) inside the other interstice (62) when a user pulls on the other strap (134) so as to move it away from the third wall (4).

18. Bag (1) according to the preceding claim in its dependence on claim 14, wherein the strap (130) connected to the wing (116) of the fourth wall (8) and the strap (134) connected to the other wing (118) of the fourth wall (8) are connected to each other, for example by an adjustable position connection.