WO2018024970A1

WO2018024970A1 - Backpack having a vertical holding frame and a support cover

Info

Publication number: WO2018024970A1
Application number: PCT/FR2017/052125
Authority: WO
Inventors: Quentin DIDIERJEAN; Joris MATYJA
Original assignee: École Nationale Supérieure De Création Industrielle
Priority date: 2016-08-03
Filing date: 2017-07-27
Publication date: 2018-02-08
Also published as: US20190191856A1; FR3054780A1; EP3493699A1; CA3032218A1

Abstract

The present invention relates to a backpack (1) comprising: – a storage envelope (2) with shoulder straps (6), – a rigid cover (30) covering the top of the envelope, – a fixed frame (31) secured to the cover and comprising at least one lower bearing surface (32), – a movable frame (4) that is articulated to the cover or to the fixed frame, with a lower bearing surface (42) and that is able to move between a stowed position and a deployed position, the frames being arranged such that, in the deployed position, the lower bearing surfaces (32, 42) are arranged around the envelope (2) such that the backpack can be placed stably on these lower bearing surfaces, the frames forming the support for the cover.

Description

BACKPACK WITH VERTICAL SUPPORT ARMATURE

AND SUPPORT HOOD

The present invention relates to the field of backpacks. More particularly, the present invention relates to a backpack with a frame allowing it, once placed on the ground, to remain vertical and form a support.

The document US 2014/0076942 A1 describes a backpack comprising a fixed frame relative to a storage envelope. This frame comprises at the bottom a base and at the top a plate, the rear side of the base and the rear side of the plate being connected by two uprights. The backpack can rest vertically on its base, the tray forming a seat. However, the strong cantilever between the plate and the uprights, the structure of the base, and the surface defined between the bars of the base, cause a low stability of the assembly and require a relatively flat floor.

The technical problem to be solved by the invention is therefore to improve a backpack to achieve a support by giving it a better stability, especially in the case of uneven floors.

For this purpose, a first object of the invention is a backpack comprising:

a storage envelope with a bottom and a top, straps at the front of the storage envelope, - a rigid cover covering the top of said envelope, a fixed armature fixed to the hood and comprising at least one lower bearing surface, called the lower fixed support surface,

a movable armature articulated on the hood or on the fixed armature, comprising a lower bearing surface, called a lower movable support surface, the movable armature being movable between

a position folded against the assembly formed by the storage envelope, the hood and the fixed armature, and

an extended position in which the lower movable support surface is at a distance from the envelope,

the armatures being arranged so that in the deployed position the lower bearing surfaces are arranged around the storage envelope so that the backpack can be placed in equilibrium on these lower bearing surfaces, the frames forming the hood support.

Thus, when the backpack is placed on the ground with the movable armature in the deployed position and on the lower bearing surfaces, the surface delimited between the lower bearing surfaces is wider than the bottom of the storage envelope. since the lower movable support surface is at a distance from this envelope. The backpack is thus more stable and maintained vertically.

Moreover, by having a surface delimited between the lower bearing surfaces wider, the irregularities of the ground have less impact on the balance of the backpack.

In addition, the cover forms a support, for example to place objects, or to sit. Note that the fixed armature is said to be fixed because it is stationary relative to the storage envelope.

The invention may optionally have any one or more of the following features:

the lower fixed support surface is located at the bottom and rear of the backpack, and in the deployed position, the lower movable support surface is located at the bottom and at the front of the backpack; thus, the mobile armature is less bulky by lodging in the back of the user;

the frames and the hood are arranged so that the hood forms a seat when the backpack is placed in equilibrium on the lower bearing surfaces; this allows the user to rest by putting his backpack on the ground and sitting on the hood, without carrying an extra chair;

the movable armature is articulated on a front edge of the hood; this facilitates the realization of the backpack;

- The fixed armature and the cover form a single piece; this facilitates the realization of the hood and its support and improves its resistance;

the one-piece piece may be formed by a shell, the shell having an upper portion forming the cap and a lower portion forming the fixed armature, the lower portion covering the rear of the storage casing; the hull thus also forms a protection of the back of the backpack, especially against shocks;

the outer surface of said upper portion and said outer surface of the lower portion are smooth; this allows the user to walk with a curved back in branches, letting the latter slip on the hull;

said lower portion and / or said upper portion comprise lateral returns at least partially covering the sides of the storage casing; these returns strengthen the upper portion and / or the lower portion; moreover, it also makes it possible to better spread the branches on the side during a curved back progression;

- The hood is arranged to be inclined relative to the bottom of the storage envelope, the hood approaching the bottom of the storage envelope in a direction from the front to the rear of the storage envelope ; this allows to have a less inclined hood when the backpack is placed on the ground in the deployed position; for example, the frames and the cover can be arranged so that, when the moving armature is in the deployed position and when the backpack is placed in equilibrium on the lower bearing surfaces, the cover has a portion of flat horizontal reception, making it easier to seat or install a measuring device, or a camera; the receiving part can represent the majority of the surface of the hood;

the storage envelope comprises one or more access openings inside the storage envelope arranged on at least one side of the storage envelope; this allows access to the interior of the storage envelope without separating it from the hood; the hood can thus be fixed inseparably to the backpack; this is particularly useful in the case referred to above, where a shell forms the hood and the fixed armature; the storage envelope has a plurality of said access openings:

at least one first access opening being arranged on the left side of the storage envelope, and

at least one second access opening being arranged on the right side of the storage envelope and opposite the first access opening;

this allows access to the interior of the storage envelope over its entire width, simply by one side or the other;

the mobile armature is formed by a frame; it is a simple and robust embodiment;

the movable armature is formed by a "U" bar with a transverse portion comprising the lower movable support surface and articulated lateral ends on the hood or on the fixed armature; it is a simple embodiment;

according to one or the other of the two preceding paragraphs, the backpack may include:

o hooks mounted at the top and bottom of the mobile armature,

a textile arranged in front of the movable armature and stretched between these hooks, the hooks being arranged between the textile and the mobile armature so as to tension the fabric away from the movable armature;

the hooks and the textile allow the user to have the back away from the moving armature, thus improving its comfort;

the hooks mounted at the bottom of the mobile armature can be arranged above and away from the surface lower mobile support; this allows the textile not to touch the ground when the backpack is placed on the ground on its lower bearing surfaces;

the backpack comprises a strap fastened firstly to the front of the storage envelope and secondly to the movable armature, so as to limit the spacing of the mobile armature relative to the storage envelope in deployed position;

the strap is an abdominal strap of the backpack; this limits the number of straps;

a slide is arranged on the storage envelope, the strap passing in the slide so that by pulling on the strap, the latter causes the approximation and / or tightening of the movable armature against the storage envelope; this allows a simple passage from one position to another;

according to the preceding paragraph and when the strap is the abdominal strap, the latter is also connected to at least one closure fastener of the lap strap, the lap strap being also arranged to slide relative to this or these fasteners, so as to by pulling on the abdominal strap, it tightens it around the abdomen at the same time we tighten the mobile armature against the storage envelope; this simplifies the manipulations to move the moving armature from one position to another;

the slide is a ring comprising a ring and a central upright connected to this ring; it is a simple and resistant embodiment of a slide;

- the strap includes: O a first end slidably connected to an attachment of the abdominal strap, then

a first portion of strap passing in one direction in the ring and between the central upright and the ring, then between the central upright and the front of the storage casing, then passing in the other direction in the ring and between the central upright and the ring and then being attached to the movable armature

it is a way of producing a means for driving the mobile armature in the folded position;

according to the preceding paragraph, the first portion of webbing may also be doubled by an additional portion of strap attached on one side to the movable armature and the other to the strap between the central upright and the first end, so the first strap portion and the additional strap portion are slidable on either side of the central upright, the attachment of the additional strap portion to the strap forming a stop; this limits the amplitude of the spacing of the mobile armature of the storage envelope;

the ring is fixedly attached to the storage envelope and the central upright is shifted forward with respect to the ring; this improves the robustness of the fastening of the strap, the plating of the movable armature and the sliding of the strap;

alternatively, the slide is a passer, especially sewn on the storage envelope; it is a very simple form of realization. Note that in this application the front of the backpack is the face placed against the back of the user when he wears the backpack and the back is the opposite side. The right and left of the backpack are defined in relation to this orientation. This orientation is also the vertical orientation of the backpack.

Other features and advantages of the invention will appear on reading the detailed description of the following nonlimiting examples, for the understanding of which reference will be made to the appended drawings, among which:

Figure 1 shows a backpack according to an exemplary embodiment of the invention, in a perspective view from the side and front, the bag extends represented in a vertical position, the movable armature being in the folded position;

Figure 2 shows the backpack according to Figure 1 but with the movable armature in the deployed position;

Figure 3 shows Figure 2 but viewed from the side and with the backpack placed vertically on the ground, in balance;

Figure 4 shows the backpack of Figure 3 in a similar view but with access to the inside of the open storage envelope, the shoulder straps of the backpack not being shown;

Figure 5 shows the backpack of Figure 1 in a perspective view from the side and from behind;

Figure 6 shows the backpack of Figure 1 but without the shell or the storage envelope, and in a perspective view slightly side and back;

FIGS. 7 and 8 show the position of the strap in the deployed position of the mobile armature, according to a perspective view respectively rear and front perspective view;

Figures 9 and 10 show the position of the strap in the folded position of the movable armature, respectively in a rear perspective view and in a front perspective view;

Figure 11 shows an example of a slide of the backpack of Figure 1;

Figure 12 shows a sectional view of the slide of Figure 11;

Figure 13 shows a side view of the hull of the backpack of Figure 1;

Figure 14 shows the articulation of the movable armature on the hull of the backpack of Figure 1;

FIGS. 15 to 19 correspond to FIGS.

But according to an alternative embodiment;

20 shows a backpack according to another embodiment but without the storage envelope and straps, and in a perspective view slightly side and front, the movable armature being folded down;

Figure 21 shows the backpack of Figure 20 but without the shell, the storage envelope, or straps and in a perspective view slightly side and back.

Figure 1 illustrates an embodiment of a backpack 1 according to the present invention.

It comprises a storage envelope 2, which forms the envelope separating the outside of the backpack 1 and its interior, thereby defining a storage space inside which can be arranged different objects. The backpack 1 comprises straps 6 attached on the one hand at the top of the backpack and on the other hand at the bottom thereof, so as to allow a user to wear the backpack against his back, the suspenders 6 passing around his shoulders.

The backpack 1 may also comprise, as illustrated here, an abdominal belt arranged to close around the size of the user, and comprising at least one closure strap 5.

The illustrated backpack 1 comprises a shell 3.

This shell 3 comprises an upper portion forming a rigid cover 30, which forms a protection of the top of the storage envelope 2.

In the example illustrated, the cover 30 covers the entire top of the storage envelope 2 and comprises a generally flat surface.

This shell 3 also comprises a lower portion which forms a protection of the rear of the storage envelope 2.

The shell 3 is fixed immovably on the storage envelope 2. The lower portion 31 is fixed in relation to the entire storage envelope 2 and the cover 30. This lower portion therefore also forms a fixed armature 31.

According to the invention, the fixing of the shell 3 on the casing 2 can be carried out in an irremovable manner, for example by gluing, riveting, thermosetting or other techniques. Alternatively, the fixing of the shell 3 on the casing 2 can be performed removably, for example by self-gripping strips, snaps, or clipping means. The backpack 1 also comprises a mobile armature 4 articulated on the cover 30, in this example on the front edge 33 of the cover 30, as can be seen in FIG. 13.

This mobile armature 4 is formed, in this example, by a frame located at the front of the storage envelope 2. Therefore, when the user wears the backpack 1 on his back, this frame 4 is located between his back and storage envelope 2.

To improve the comfort of wearing the backpack

1, the frame 4 may include a stretched fabric 41, also called stretched back 41, intended to come into contact with the back of the user. This stretched back may for example be formed by a net.

The storage envelope 2 comprises a bottom 21.

When the backpack 1 is placed vertically on the ground S, as shown in Figure 3, the bottom 21 is in contact with the ground S.

As illustrated in Figure 2, the movable armature 4 opens with a certain angle.

According to the invention, the movable armature 4 is able to pass from a folded position, in particular against the storage envelope 2, as illustrated in FIG. 1, to an extended position, illustrated in FIG. 2.

In particular, in the illustrated example, thanks to its articulation, the movable armature moves from its folded position against the front wall 23 of the storage envelope 2, in the deployed position, away from the front wall 23 , for example by a rotational movement about an axis located at the top of the storage envelope 2. The deployed position allows a better stability of the backpack 1, placed in a vertical position on the ground S, as for example in FIG.

The movable armature 4 has a lower bearing surface 42, called lower bearing surface 42, intended to come into contact with the ground S, when the backpack is placed vertically on the ground S. Similarly the hull 3, and therefore the fixed armature 31 formed by the lower portion of this shell 3, comprises a lower bearing surface 32, said lower bearing surface 32, which is intended to be in contact with the ground S, when the backpack is placed vertically.

Thus when the backpack is placed vertically on the ground, with the mobile armature 4 in the deployed position, the backpack 1 is held vertically and in equilibrium by its movable armature 4 and the fixed armature 31. This balance is stabilized by the supports on the lower bearing surfaces 42 and 32. As the moving armature 4 is in the deployed position, the lower movable support surface 42 is located away from the storage envelope 2, which increases the stability of the backpack 1.

The lower bearing surfaces 32, 42 are distributed around the bottom 21 of the storage casing and define between them a surface greater than that of the bottom 21 of the storage casing 2, thus improving the stability.

Furthermore, in the embodiments of the invention in which the fixed armature 31 is formed by a shell 3, for example as illustrated, this shell may be in the form of a plate, in particular a non-planar plate, the edge of this plate forming the lower fixed support surface 32.

Similarly, by making the armature mobile by a frame 4, it is the lower amount of the frame 4 which can directly form the lower bearing surface movable 42.

Being formed by a slice and a frame upright, the lower bearing surfaces 42, 32 can adapt more easily to different unevenness of the ground that would be between these lower bearing surfaces.

The bottom 21 fits the ground S.

Once the backpack 1 placed vertically on the ground S, the plate formed by the outer surface 35 of the cover 30, can serve as a support for different objects and also serve as a seat for the user of the backpack. In such a case, the transfer of weight refers directly to the frames 4, 31, then is transferred to the ground S by the lower bearing surfaces 42, 32.

The backpack according to the invention, and in particular according to the illustrated example, is thus particularly suitable for hiking, especially in a hilly environment. In particular, it is suitable for environmental professionals, such as paleontologists, primatologists, entomologists, geologists, etc. These professionals must indeed go in the best conditions on research sites particularly difficult to access, carrying more fragile equipment.

In general, in cases where the fixed armature 31 and the cover 30 are formed by a rigid shell 3, the latter makes it possible to protect the sensitive material stored inside the storage envelope 2, and possibly evolve in dense vegetation by limiting the risk of hanging from the backpack to plants. This shell 3 is also able to form a seat for the seeker, this shell 3 and the mobile armature forming a seat, especially once arrived at the work site. This shell 3 can also serve as a support for various devices, such as a camera, a laptop, a GPS antenna.

In particular in the illustrated example, the shell 3 and the movable armature are arranged so that the deployed position, the cover 30 is horizontal when the backpack 1 is positioned on a ground roughly horizontal.

The stretched back 41 improves walking comfort.

Moreover, the outer surface 35 of the shell 3 may be smooth in order to reduce the risk of hanging on the plants.

In order to facilitate this sliding, the backpack 1 may comprise, as illustrated in FIG. 5, a curve 37 connecting the cover 30 and the fixed armature 31. This curve 37 forms a transition between the cover 30 and the fixed armature 31. In particular, the curve 37 allows a sliding when the user progresses the curved back, the branches sliding first against the hood 30 and then along the fixed armature 31.

The shell 3 may also include lateral returns 38, 39. In this example, the lateral returns 38, 39 are portions of the cap 30 and the fixed armature 31, and are slightly inclined downwards for the cap 30 and slightly inclined. forward for the fixed armature 31. These lateral returns improve the sliding of branches on the hull, without hanging the sides of the storage envelope 2.

The lateral returns 39 of the lower portion 31 also make it possible to give the lower fixed bearing surface 32 the shape of a curved wafer or with segments forming an angle between them. These lateral returns 39 thus globally surround the rear of the storage envelope 2, thus further improving the stability of the support on the lower fixed support surface 32.

According to the invention and as illustrated in FIG. 5, the transition between the lateral returns 39 of the lower portion 31 and the remainder of the shell 3 may form a rib 36, which makes it possible to further strengthen the shell 3, and therefore also the support of the hood 30 when the backpack 1 is in a vertical position on the ground S.

In Figure 5, given the orientation of the backpack 1, only the side returns 38 and 39 of the hood and the lower portion 31 to the left are visible. However, the same type of lateral returns may be present to the right of the storage envelope 2.

The shell 3 may have, as in this example, a vertical plane of symmetry and oriented front to back.

The shell 3 forms a single piece monobloc, simpler to achieve but also to protect the entire summit and back of the backpack. For this it can also have a shape allowing it to marry the volume that can take the storage envelope 2 once full. The back and / or the top of the storage envelope 2 can also be plated to the shell 3, in particular by gluing.

However, according to other embodiments not shown, the hood and the fixed armature can be made in separate rooms.

According to other embodiments not shown, the fixed armature may not form a plate completely covering the back of the storage envelope. The fixed frame may include two rear legs, leaving an opening at the back between these two legs, to provide access to the back of the storage envelope.

According to the invention and as illustrated in FIGS. 3 and 4, the storage envelope 2 may comprise flaps 24 making it possible to close the sides of the storage envelope 2. These flaps 24 open, as illustrated in FIG. give access to two access openings 25, 26 inside the storage envelope.

In this example, it is a left access opening 25 and a right access opening 26 arranged vis-à-vis, so that when the flaps 24 are open on both sides, the bag 1 is open through the left access opening 25 to the right access opening 26. This allows access to the entire interior of the storage envelope 2 by the sides .

This allows quick access to the contents of the backpack 1 while walking, but also when it is placed on the ground.

This is all the more interesting in the case of the illustrated example, wherein the shell 3 completely covers the top and the rear of the storage envelope 2. The backpack 1 may also comprise partitions, fixed or removable, especially by self-gripping strips, so as to compartmentalize the interior of the storage envelope 2.

Thus, in the example illustrated in FIG. 4, horizontal partitions 28 are arranged forming three compartments inside the storage envelope 2, each of these compartments being accessible on both sides of the backpack.

The flap (s) 24 may make it possible to give access to all the compartments, as illustrated in FIG. 4.

The number of partitions is not limiting.

The compartmentat ion by horizontal partitions 28, whatever the number, allows the backpack to form a shelf, once placed on the ground. This facilitates access to content and storage, especially during professional shipping. To improve this function, the horizontal partitions 28 may be rigid. For example, they may comprise a rigid core surrounded by a flexible material, such as a foam bonded to this core, to protect fragile materials.

The lowest horizontal partition 28 may be arranged at a distance from the bottom 21, the access opening or openings 25, 26 being at or above this horizontal partition. Thus, the storage envelope 2 has no access between this partition and the bottom 21. This protects the objects from impact, especially when the backpack is placed.

The flaps 24 may comprise flywheels 27 opening in one of these flaps 24, so as to individually access the compartments. According to an embodiment not shown, the storage envelope may comprise a flap only on one side of the storage envelope.

The storage envelope 2 may also comprise a vertical partition, not shown, extending at the rear of the front wall 23 of the storage envelope 2 and from right to left, for example to form a storage compartment. 'a laptop.

In general, the interior of the storage envelope 2 may be covered with a quilted lining, in particular foam.

According to unrepresented embodiments, there is no flap but directly flounces opening on each of the individual behaviors.

The ruffles 27 and / or the flaps 24 can be opened by a zipper.

According to the invention and as illustrated in FIG. 4, in order to improve the comfort of the user, the rucksack 1 comprises an upper grip 44 and a lower grip 47, located respectively at the top and bottom of the frame 4. textile back stretched 41 is fixed between the upper hook 44 and the lower hook 47 so as to be stretched away from the frame 4.

As can be seen in FIG. 6, the upper catch 44 and / or the lower catch may each be formed by a plate 45, 48, directly fixed, by screwing or riveting, to the frame 4. On each plate 45, 48 is fixed a cushion 46, 49. The hooks 44, 47 protrude by their plates 45, 48 and their cushions 46, 49 laterally on each side of the frame 4. This gives a certain width to the stretched back 41. The lower hook 47 may be, as here, wider than the upper hook 44, giving the taut back 41 a flared shape s' argi ss ant going down.

For example and as here, the stretched back can cover the cushions 46, 49 in front of them, to stretch the fabric away from the frame 4.

According to the invention and as illustrated, the straps 6 may be formed by a single piece, which may comprise at its center an attachment means 61, here a textile tongue 61, intended to be fixed to the rear of the stretched back 41 to improve comfort. In particular, it can be sewn on the stretched back 41 and / or the cushion 46 of the upper hook 44. These straps can also be attached from below to the storage envelope 2.

It will now be detailed the arrangement of the abdominal belt and the articulation of the armature mob i 4.

According to the invention, and in particular according to the illustrated example, this belt makes it possible to perform both the abdominal support of the backpack on the user, and the limitation of the opening angle of the mobile armature 4 by relative to the front wall 23 of the storage envelope 2.

According to the invention, particularly as illustrated in FIG. 14, this articulation can be formed on the one hand by a sheet metal plate 43 shaped as a gutter. The tops of this channel include curved edges fixed on the front edge 33 of the cover 30 and under the latter, in particular by screwing, riveting or gluing, preferably by riveting. An upper horizontal amount of the frame 4 is housed in the gutter between the bottom of the gutter and the cover 30. This upper horizontal upright is cylindrical, of circular section, and thus rotates along an axis parallel to its length inside the gutter. Thus, a simple articulation of this frame 4 with respect to the cover 30 is formed. The frame 4 can, as here, be formed entirely of tubular parts.

Here the belt comprises an abdominal strap 5 which forms at one of its ends, the right side of the abdominal belt, and at the other end, the left side.

According to an embodiment of the invention not shown, the abdominal belt could comprise a right abdominal strap and a left abdominal strap.

As can be seen in Figure 6, the abdominal strap 5 comprises at a first end 50, connected to a first fastener closure, here a closure loop 7. The lap strap 5 then passes inside a cushion abdominal 11 so that, when the lap strap 5 is attached, it comes into contact with the user's stomach, then passes through a slide 8 fixed to the front wall 23 of the envelope 2, then passes around the frame 4, goes back again in a slide 8, also attached to the front wall 23 of the storage envelope 2, then passes again in an abdominal cushion 11 and ends with a second end 59, not visible in FIG. 6 but visible in FIG. 1. This second end directly forms a fastener fastening and slidably tightening in the closure loop 7. According to embodiments not shown, each extremity of the abdominal strap can be connected to a fastening loop fastening to each other, at least one of the ends being able to slide with respect to the buckle which it carries to tighten the abdominal belt.

As illustrated in FIGS. 11 and 12, the slide 8 is a ring comprising a ring 80 and a central upright 81, extending parallel to the uprights of the ring and located approximately halfway between each of the uprights of this ring. 80. Nevertheless, as can be seen in Figure 12, which corresponds to a section of the slide 8 in a plane perpendicular to the central upright 81, the central upright 81 is shifted forward or downwardly in Figure 12 .

According to one embodiment of the invention, and as here, the ring 80 may comprise a flat rear face 83 which is pressed against the front wall 23 of the storage envelope 2. This rear face 83 is in contact with the envelope 2, the offset of the central upright 81 allowing the strap to slide more easily between the storage envelope 2 and the central amount 81, as can be seen in Figure 6 to 10.

Fixing the ring 80 to the storage envelope 2 can be achieved by means of pins 82 extending from the rear face 83. These pins 82 can be driven into the front wall 23 of the storage envelope by thermo - s oudage and / or by hot riveting. In particular, the ring 8 and front wall 23 of the storage envelope 2 may be made of thermoplastic polymer (s). For example, this front wall 23 may be formed of one or more polymer fabrics (s) or a textile formed by a fabric, such as polyethylene (PE) coated and / or impregnated with polyvinyl chloride (PVC).

The slide 8 may be formed of polypropylene

(PP), acrylonitrile butadiene styrene (ABS), or a mixture of both.

On each side of the frame 4, the abdominal strap 5 comprises a first portion 51 which is defined between the attachment of the abdominal strap 5 to the frame 4 and a stop 53. The abdominal strap 5 comprises a second portion 52 which extends from this stop 53 and the corresponding end 50, 59 of the lap strap 5, and which therefore passes through openings of the corresponding belly cushion 11.

As illustrated in FIGS. 7 to 10, the first portion 51 of the abdominal strap 5 passes in front of a first lateral upright of the ring 80, then passes in one direction in the ring and between the central upright 81 and the ring. 80, then between the central upright 81 and the front wall 23 of the storage envelope 2, then passes in the other direction in the ring and between the central upright 81 and the ring 80, then reaches the frame 4 to which it is fixed, in this example, being clamped between the plate 48 of the lower hook 47 and the frame 4.

According to the invention, and as illustrated, the backpack 1 may comprise an additional portion of strap 55, separate from the abdominal strap 5 and arranged between the abdominal strap 5 and the plate 48 of the lower hook 47. For example, rivets can pass through both the plate 48, the additional portion of the strap 55, the lap strap 5 at the same time. level 4 and the lateral amounts of frame 4 itself.

The ends of this additional portion of strap 55 can be sewn to the strap 5, on either side of the frame 4. In Figure 8, we can see one of the ends 54 of the additional portion of strap 55 pressed against the abdominal strap 5 and stitched to it. In this example, the seam thus forms the stop 53.

This end 54 of additional strap portion 55 is sewn so that the central upright 81 is housed between the first portion 51 of the lap strap 5 and this additional portion of strap 55.

As can be seen in Figures 9 and 10, when the movable armature 4 is in the folded position, the first portion 51 of the lap strap 5 is distributed on either side of the central upright 81 of the ring 8, the strap abdominal 5 being tight. When the user undoes the fasteners 7, 59, he can relax this strap 5 by moving the frame 4 away from the front wall 23 of the storage envelope 2, the first portion 51 of the lap strap 5 slides between the ring 80 and the central post 81 until the seam 53 reaches the central post 81, as illustrated in FIGS. 7 and 8. At this moment, the seam 53 forms a stop, which limits the angular opening of the moving armature. 4.

Conversely, by tightening the abdominal strap 5, it allows to fold again the mobile armature 4 against the storage envelope 2. The lap belt 5 sliding in the opposite direction between the amount central 81 and the ring 80, the seam 53 away from the central upright 81, as shown in Figures 9 and 10.

Therefore, the lap strap 5 has a dual function: both to tighten the storage envelope 2 around the size of the user and to fold down the mobile armature 4. This requires a single manipulation for these two functions. This is particularly useful in dirty environments, especially muddy. Indeed, by limiting the number of manipulations, it reduces the dirt of the backpack.

According to an embodiment not shown, the articulation of the movable armature may comprise an elastic element arranged so that the passage from the deployed position to the folded position increases its stress. As a result, it exerts on the moving armature a restoring force towards the deployed position. Thus, just loosen the lap strap, so that the moving armature moves to the deployed position. There is one less manipulation. This elastic means may be for example a torsion spring, in particular with turns wrapped around the upper amount of the frame, one end of the spring being fixed to the frame and the other to the hull.

According to the invention, in order to reduce the risk of staining of the stretched back 41, the lower hook 47 can be arranged above and at a distance from the lower movable support surface 42, as can be seen in FIGS. 6. For example, this distance can be between 20 and 50 millimeters (mm), in particular be 40 millimeters.

Also, the lap cushions 11 can be sewn away from the bottom 21, to avoid touching the ground S. Furthermore, the frame 4, the shell 3, the stretched back 41 and the front wall 23 of the storage envelope 2 can be arranged so that in the folded position, the bottom 21 and the bottom of the frame 4 are remote from the stretched back 41. This allows the areas of contact with the ground when the backpack 1 is placed, to come into contact with the back of the walker when he carries the backpack 1.

According to the invention, and as illustrated, to prevent soiling, the flap 24 can be arranged, as here, away from the bottom 21. It can be arranged to open around its periphery, with the exception of a upper portion that forms a hinge. For example, in FIG. 4, the zipper starts at the top of the flap 24 and forwards, descends in a backward direction, goes around the access opening 25, 26, then rises upwards for stopping at a distance from its starting point, for example about halfway up the edge of the corresponding access opening 25, 26.

The backpack 1 may comprise a removable accessory (not shown) formed by a plate comprising on one side clipping means, such as lugs, arranged to snap around the lower amount of the frame 4. In this case, it is possible to clipper this accessory to increase the ground contact surface of the mobile armature 4, which can be useful in soft ground, including muddy.

In addition, the bottom 21 may be reinforced, in particular lined with a waterproof layer, for example a textile coated with at least one polymer. This makes it easy to clean the bottom 21. In general, the entire storage envelope, or even the entire backpack, can be made of materials capable of being wet or even washed with water jet.

Of course, the illustrated embodiment is not limiting as to its dimensions.

By way of example, however, a few applicable dimensions may be mentioned, in particular to the embodiment illustrated, as shown in FIG. 13.

For example, to provide a good seat for the user of the backpack 1. The length is L1 between the lower bearing surfaces 32 and 42 may be 357 mm, for a flat surface at the hood 30 d a length of 200 mm. This improves the ground resistance due to the difference between these two lengths L1 and L2.

The movable armature 4 may have a length L3, from its articulation to the lower movable support surface 42, of 405 mm. The opening angle β of the moving armature 4 in the deployed position may be 100 °.

The height of the shell 3, taken from the outer surface 35 its cover 30 to the lower fixed bearing surface 32, may be 400 mm. This allows a comfortable sitting.

The curve 37 of the shell 3 may be arranged in such a way that a curve angle α is defined between a plane which comprises the flat surface of the cap 30 and a plane passing through the portion of the outer surface of the lower portion 31. of the hull 3, this part being situated between the left lateral returns and law. The shape of the curve 37 passing from one of the planes to the other continuously and regularly. The curve angle can be 95 °.

According to the invention, the cover 30 and / or the fixed armature 31, or the shell 3, may be in a material chosen from: aluminum, a polycarbonate (PC), a polypropylene filled with fiberglass or polymeric material, ABS or PP.

For example in the case of the PC and the loaded PP, the shell 3 can be obtained by thermoforming. In the case of ABS and PP, it can be obtained by injection.

More particularly, according to the invention, the shell 3 may be of PC and / or have a thickness of between 3 and 8 millimeters (mm), in particular 4 mm.

The ventral strap may be for example nylon or textile fiber.

Figures 15 to 19 illustrate an alternative embodiment which differs from the backpack of Figures 1 to 14 by its slide 108. The other elements are unchanged, their references are retained and only the variations are described below.

According to this variant, the slide 108 is formed by a simple fabric loop. The passer includes a back pan 180 and a pan before 181.

The rear face 183 of the rear panel 180 is flat and is pressed against the front wall 23 of the storage envelope 2. In particular, the rear panel 180 can be sewn to the storage envelope 2.

The slide 8 may be formed of the same material as that of the strap. As in the previous variant, the first portion 51 of the lap strap 5 is defined between the attachment of the lap strap 5 to the frame 4 and the stop 53. However, here, this first portion 51 passes between the front face of the rear panel 180 and the pan before 181.

The second portion 52 of the lap belt 5 extends, also here, from the stop 53 to the corresponding end of the lap strap 5.

In this variant also, the backpack may comprise an additional portion of strap 55. In FIG. 17, one can see one of the ends 54 of the additional portion of strap 55 pressed against the abdominal strap 5 and stitched thereto. . In this example, the seam thus forms the stop 53.

Here, this end 54 of additional strap portion 55 is sewn so that the front panel 181 is housed between the first portion 51 of the lap strap 5 and this additional portion of strap 55.

Thus, when the user relaxes this strap 5 by removing the frame 4 from the front wall 23 of the storage envelope 2, the first portion 51 of the lap strap 5 slides in the slide 8, between the rear panel 180 and the pan. before 181, until the seam 53 reaches the front panel 181, as illustrated in FIGS. 16 and 17.

Conversely, by tightening the lap strap 5, it allows to fold the mobile armature 4 against the storage envelope 2. The lap belt 5 then slides in the opposite direction, between the front panel 181 and the rear panel 180, sewing 53 away from the pan before 181, as illustrated in Figures 18 and 19.

Figures 20 and 21 illustrate another embodiment of a backpack according to the invention, this example having several additional variants. However, these variants can be applied independently of each other to the backpack according to the invention. The storage envelope 2 is not shown because it can be identical to that of the previous example.

The differences in these variants essentially concern the mobile armature 204, in particular its attachment to the hull 203 and the extended back 241.

Thus, Figure 20 illustrates second, third and fourth variants.

According to the second variant, the mobile armature is formed by a "U" bar 204. It thus comprises a transverse portion connecting lower ends of two lateral portions 204a and 204b of this "U" bar.

The high ends of these lateral portions 204a and

204b are articulated on the front edge 233 of the shell 203. For example, two fork supports 243 can be fixed on the front edge 233, on each side of the cover 230, in particular by screwing or riveting. The fork of each of these supports 243 carries a pivot passing right through the upper end of the corresponding lateral portion 204a, 204b of the "U" bar.

According to the third variant, the bearing surface 242 may be covered with a layer 242 'of PVC. To protect the bottom of the mobile armature from moisture, especially mud. This layer 242 'can go up on a part of the height of the mobile armature 204. Similarly, according to the fourth variant, the bottom of the lower portion of the shell 203 may be fitted and / or glued in a reinforcement 233. This reinforcement 233 may, as shown be formed of a bar with a section "U" and shaped in a complementary manner to the lower edge of the shell 203. The lower face of this reinforcement 233 thus forms the lower fixed bearing surface 232 of the fixed armature 231. This bar is formed by a sheet. It may for example have a length of about 330mm.

Figure 21 illustrates fifth and sixth variants.

According to the fifth variant, the upper and / or lower hook of the stretched back 241 respectively at the top and / or bottom of the mobile armature 204, may comprise an upper hook strap 245b respectively and / or lower 248b. Each hook strap 245b, 248b is attached to the back of a corresponding cushion, namely a top cushion 246 or a bottom cushion 249, so as to take up the movable armature 204 in a vice between the corresponding cushion 246. , 249 and the corresponding hook strap 245b, 248b.

The upper and / or lower catch may also comprise a spacer 245a, 248a. This spacer 245a, 248a has a width and a length allowing it to provide housing 245d, 248d lateral portions 204a, 204b of the mobile armature 204, on each side of the spacer 245a, 248a corresponding. This type of housing 245d, 248d can also be applied to the side bars of the frame 4 of the example illustrated in FIG. 6 or 15.

The spacer 245a, 248a may be formed by a pocket whose sides are sewn so as to form spacing means between the cushion 246, 249 and the hook strap 245b, 248b.

The top hook strap 245b can be directly sewn onto the top cushion 246. The spacer 245a can include a flap 245c protruding from the back of the hook strap 245b.

The straps can be attached to this flap 245c. For example, the shoulder straps may comprise a textile tongue such as that 61 of Figure 6, this tongue being directly attached to the flap 245c, for example by means of 245e pressure buttons.

The bottom hung strap 248b may be sewn against an abdominal strap 205, itself sewn against an additional portion of strap 255, itself sewn against the bottom cushion 249. These straps 248b, 205, this strap portion 255 and this bottom cushion 249 can be sewn together by the same seam.

The additional portion of strap 255 is arranged with the lap strap 205 in the same manner as described with reference to Figs. 1 to 19, and can cooperate with a slide, such as slides 8 or 108 of Figs. 11 and 12 or 16 through 19.

According to the invention, in order to be more resistant, the straps and / or the spacers may be coated textile, coated or impregnated with a polymer, for example a PE fabric coated with PVC.

The straps may also include an outer layer formed of these materials.

The cushions may comprise covers formed of the same materials and enclosing a foam.

They may comprise a reinforcing plate bearing against the mobile armature. The bottom of the storage envelope can also be reinforced by straps stitched inside or outside.

In general, the movable armature may be steel.

Claims

1. Backpack (1) comprising:

a storage envelope (2) with a bottom (21) and a top,

straps (6) at the front of said storage envelope,

a rigid cover (30; 130) covering the top of the storage envelope,

a fixed armature (31; 231) fixed to the hood and comprising at least one lower bearing surface, called the lower fixed bearing surface (32; 232),

a movable armature (4; 204) hinged to the hood or to the fixed armature, comprising a lower bearing surface, called a lower movable support surface (42; 242), the movable armature being movable between a position folded against the assembly formed by the storage envelope, the hood and the fixed armature, and

the reinforcements (31, 4; 231, 204) being arranged such that in the extended position the lower bearing surfaces (32, 42; 232, 242) are arranged around the storage casing (2); so that the backpack can be placed in equilibrium on these lower bearing surfaces, the armatures forming the support of the hood.

A backpack (1) according to claim 1, wherein the lower stationary bearing surface (32; 232) is located at the bottom and back of the backpack, and wherein in position deployed, the movable lower support surface (42; 242) is located at the bottom and at the front of the backpack.

The backpack (1) according to claim 1 or 2, wherein the armatures (31, 4; 231, 204) and the hood (30; 230) are arranged so that the hood forms a seat when the backpack is placed in equilibrium on the lower bearing surfaces (32, 42; 232, 242).

4. Backpack (1) according to one of the preceding claims, wherein the movable armature (4; 204) is articulated on a front edge (33; 233) of the hood (30; 230).

5. Backpack (1) according to one of the preceding claims, wherein the fixed armature (31; 231) and the cover (30; 230) form a single piece forming a shell (3; 203), this shell having an upper portion forming the cap and a lower portion forming the fixed armature, the lower portion covering the rear of the storage casing (2).

A backpack (1) according to claim 5, wherein the outer surface (35) of said upper portion (30; 230) and the outer surface (35) of said lower portion (31; 231) are smooth.

7. Backpack (1) according to one of the preceding claims, wherein the cover (30; 230) is arranged to be inclined relative to the bottom (21) of the storage envelope (2), the hood approaching the bottom of the storage envelope in a direction from the front to the rear of the storage envelope.

8. Backpack (1) according to one of the preceding claims, wherein the storage envelope (2) comprises one or more access openings (25, 26) inside the storage envelope arranged on at least one side of the storage envelope.

9. backpack (1) according to claim 8, wherein the storage envelope (2) has a plurality of said access openings:

at least one first access opening (25) being arranged on the left side of the storage envelope, and

- At least a second access opening (26) being arranged on the right side of the storage envelope and vis-à-vis the first access opening.

10. Backpack (1) according to one of the preceding claims, wherein the movable armature is formed by a frame (4) or a "U" bar (204) with a transverse portion comprising the lower surface of movable support (242) and articulated lateral ends on the hood or on the fixed armature (231), the backpack comprising:

hooks (44, 47) mounted at the top and bottom of the movable armature,

- A textile (41) arranged in front of the movable armature and stretched between these hooks, the hooks being arranged between the textile and the movable armature so as to tension the fabric away from the movable armature.

11. Backpack (1) according to one of the preceding claims, comprising a strap (5; 205) fixed firstly to the front of the storage casing (2) and secondly to the mobile armature (4; 204) so as to limit the spacing of the mobile armature relative to the storage envelope in the deployed position.

12. Backpack (1) according to claim 11, wherein the strap is an abdominal strap (5; 205) of the backpack.

A backpack (1) according to claim 11 or 12, wherein a slider (8; 108) is arranged on the storage envelope (2), the strap (5; 205) passing in the slider so as to that by pulling on the strap, the latter causes the approximation and / or tightening of the movable armature (4; 204) against the storage envelope.

A backpack (1) according to claim 13 taken in combination with claim 12, wherein the lap strap (5; 205) is also connected to closure fasteners (7) of the lap strap, the lap strap being also arranged to slide relative to these fasteners, so that by pulling on the abdominal strap, it tightens it around the abdomen at the same time we tighten the mobile armature against the storage envelope (2).