Backpack or schoolbag type bag including a carrying strap

Abstract

The invention relates to a backpack or satchel-type bag (100) for carrying a load, comprising two shoulder straps (110) extending from a so-called upper part of the bag and intended to be worn by a separate shoulder of an individual. The bag comprises an outer casing (120) surrounding a so-called main storage compartment (121) intended to contain at least part of said load. The bag is characterized in that it comprises a so-called carrying strap (130; 230) for encircling the hips and / or waist of said individual, and includes a means (140) for opening and closing the carrying strap. The carrying strap forms a tightening perimeter encircling at least the main storage compartment (121), excluding a so-called secondary storage compartment (122) included within the outer casing (120), when the strap is closed. (See Figure 1 for abbreviations.)

Description

Title of the invention: Backpack or satchel type bag comprising a carrying strap TECHNICAL FIELD OF THE INVENTION

[0001] The field of the invention is that of luggage.

[0002] More specifically, the invention relates to a backpack or satchel type bag comprising a carrying strap.

[0003] The invention finds applications in particular for helping an individual to distribute the force exerted by a load carried in the bag over his shoulders and hips. STATE OF THE ART

[0004] Bag techniques are known from the prior art, in particular of the backpack or satchel type, comprising a pair of straps each extending from a so-called upper part of the bag and each intended to be carried by a separate shoulder of an individual.

[0005] Such bags may also include a waist strap, generally attached to the back of the bag, and intended to encircle the hips and / or waist of the individual without, however, encircling the perimeter of the bag.

[0006] Such straps have the effect of pressing a so-called lower part of the bag against the individual's back, making it possible to stabilize the bag on the individual's back to a certain extent.

[0007] However, such straps do not provide assistance with back carrying as such, and do not relieve the wearer of a bag equipped with a ventral strap of the force exerted on his shoulders.

[0008] In order to overcome this problem, devices are also known for assisting in carrying a bag on the back, such as for example the device disclosed in French patent FR1907808 belonging to the Applicant.

[0009] Such devices are removable and can be used with generic backpack or satchel type bags, and include a so-called carrying strap intended to encircle the individual's hips and a lower part of the bag, which makes it possible to divert the force exerted by the load carried in the bag towards the hips rather than towards the shoulders.

[0010] This type of device has the advantage of being able to provide support for back carrying for any type of backpack or school bag when it is fitted to such a bag.

[0011] However, the known systems have an effect on the distribution of forces between the shoulders and the hips which varies depending on the individual (in particular their morphology) but also depending on the design of the bag.

[0012] The distribution of forces which is obtained may not be optimal, that is to say that too large, or too small, part of the force is redirected towards the hips and / or the waist, or towards the shoulders.

[0013] By using the known devices, the individual wearing the bag may not be relieved as desired.

[0014] There is therefore a need to propose a device which makes it possible to improve the back carrying of a bag such as a backpack or satchel, and which allows the user to adjust the distribution of forces towards the hips and / or the waist, and the shoulders, as he sees fit. Presentation of the invention

[0015] The present invention aims to remedy all or part of the drawbacks of the state of the art cited above.

[0016] For this purpose, the invention relates to a backpack or satchel type bag intended to contain a load, comprising two straps each extending from a so-called upper part of the bag and intended to be carried each by a separate shoulder of an individual, the bag comprising an envelope surrounding a so-called main storage volume, intended to contain at least part of said load, the bag comprising a so-called carrying strap, intended to encircle the hips and / or the waist of said individual, comprising a means for opening and closing the carrying strap, the carrying strap configuring a tightening perimeter encircling at least the main storage volume, to the exclusion of a so-called secondary storage volume included inside the envelope, when the strap is closed.

[0017] The bag according to the invention makes it possible to redirect the force exerted on the user by the part of the load placed in the main storage volume towards the hips and / or the waist of the user.

[0018] Where appropriate, the force exerted by the part of the load placed in the secondary storage volume is redirected towards the user's shoulders.

[0019] In this way, by placing all or part of the load in the main storage volume, and by placing any remaining load in the secondary storage volume, the user can adjust the proportion of the load which is redirected towards his hips and / or waist on the one hand, and towards his shoulders on the other hand.

[0020] This results in a particularly convenient bag, which allows a user to choose an optimal distribution of the load carried in the bag on his body.

[0021] The bag according to the invention is, for example, particularly suitable for children and young adults wishing to transport books and / or notebooks in optimal conditions, respectful of their morphology and their health.

[0022] The bag according to the invention also makes it possible to preserve the integrity of a fragile load, in particular by placing it in the secondary storage volume which is outside the clamping perimeter.

[0023] Furthermore, thanks to the carrying strap which is integrated into the bag, the bag according to the invention promotes the regular use of the carrying strap, which does not need to be installed unlike an attached carrying strap such as that described in French patent FR1907808. This considerably increases the acceptability of such a back carrying aid to the public.

[0024] Other particularly convenient and advantageous embodiments of the bag are described below.

[0025] Advantageously, the main storage volume, and preferably also the secondary storage volume, are each delimited by a storage pocket which is included in the envelope.

[0026] For example, the storage pockets are distinct and separate pockets, both arranged in the envelope.

[0027] It is specified that the envelope is here defined as the wall including all the storage volumes of the bag, whether they are of the main or secondary type. Thus, the bag may comprise a main storage pocket and a secondary storage pocket attached to the main storage pocket, the envelope then being defined by all the walls of the main and secondary storage pockets which together delimit the main and secondary storage volume. Furthermore, it is specified that a storage volume, whether of the main or secondary type, may comprise storage sub-volumes, for example produced by additional pockets arranged in a main storage pocket and / or in a secondary storage pocket.

[0028] Advantageously, the bag comprises a main storage pocket and a secondary storage pocket, and the carrying strap is arranged between said pockets.

[0029] Thus, the carrying strap is not in contact with the contents of the pockets.

[0030] Advantageously, the bag comprises an internal separating wall defining with respectively the main storage pocket and the secondary storage pocket.

[0031] In this way, the pockets are delimited directly by the envelope, as well as by the internal dividing wall separating the storage volumes.

[0032] According to a first variant, the carrying strap can slide between the main storage volume and the secondary storage volume.

[0033] The carrying strap can thus be tightened around the load contained in the main storage volume.

[0034] Advantageously, the bag comprises one or more guide elements arranged between the main storage volume and the secondary storage volume, and / or arranged outside the envelope, and in which the carrying strap can slide.

[0035] The guide elements can thus be located inside the envelope, and / or located outside the envelope. Such elements allow good positioning of the carrying strap when using the bag.

[0036] Advantageously, the guide elements are formed by loops fixed to the bag and / or one or more sheaths fixed to the bag.

[0037] Such elements, in addition to positioning the carrying strap, allow, when they are inside the envelope, to protect the carrying strap from the contents of the bag and vice versa, and when they are outside the envelope, to protect the carrying strap from external aggressions.

[0038] According to a second variant, said carrying strap is mechanically secured to the storage pocket delimiting the main storage volume, preferably by sewing.

[0039] The carrying strap cannot therefore slide inside the envelope.

[0040] In the second variant, the bag may also comprise elements of guide, arranged outside the envelope. These guide elements, which can be loops and / or sheaths, allow the carrying strap to be guided outside the envelope, and protect the carrying strap from external aggressions.

[0041] Advantageously, the carrying strap is formed by two separate strands, and the storage pocket delimiting the main storage volume comprises a wall, the separate strands being mechanically secured to the wall on either side of said storage pocket, and the two separate strands of the carrying strap and a portion of said wall together configuring said tightening perimeter.

[0042] This allows a tightening perimeter to be achieved by means of the carrying strap while it is secured to the bag. Such a design of the carrying strap is particularly simple and convenient.

[0043] Preferably, the bag comprises at least one stiffening plate arranged at the height of the carrying strap.

[0044] Such a plate makes it possible to distribute the clamping force uniformly over the load contained in the main storage volume.

[0045] Such a plate may extend over a height corresponding substantially to the width of the carrying strap, or over a height greater than the width of the carrying strap, and may in particular extend towards the upper part of the bag.

[0046] Such a plate can be mechanically secured to the carrying strap, or for example to the main storage pocket if applicable.

[0047] Advantageously, the envelope comprises a back intended to rest against the back of the individual and a front part opposite the back, and a top zone of the bag along a substantially vertical carrying axis of the bag, the back being located on a first side of the summit area, and in which the shoulder straps are secured to the envelope on the front part of a second side of the summit area opposite the first side of the summit area, so that a joint adjustment of the shoulder straps and the carrying strap makes it possible to adjust the distribution of the forces exerted by said load between, on the one hand, the shoulders via the shoulder straps and, on the other hand, the hips and / or the waist of the individual via the carrying strap.

[0048] This makes it possible to redirect in a particularly effective manner the force exerted by the load, in particular (but not necessarily) contained in the secondary storage volume, towards the shoulders of the individual, thanks to the tension exerted by the straps directly on the front part of the envelope, and in particular on the secondary storage volume.

[0049] Preferably, the straps of the pair of straps and / or the carrying strap are each adjustable in length. BRIEF DESCRIPTION OF THE FIGURES

[0050] Other advantages, aims and particular characteristics of the present invention will emerge from the following non-limiting description of at least one particular embodiment of the devices and methods which are the subject of the present invention, with reference to the appended drawings, in which: • [Fig.l] schematically represents in perspective a bag in accordance with the invention, according to a first embodiment; • [Fig.2] represents the bag of [Fig.l] in a side sectional view, including a stiffening plate; • [Fig. 3] represents a bag according to the invention in a side sectional view, according to a second embodiment in which the bag comprises a main storage pocket and a secondary storage pocket; • [Fig.4] represents a bag similar to that shown in [Fig.3], comprising an internal dividing wall separating the main storage pocket and the secondary storage pocket; • [Fig.5] schematically represents in perspective a bag according to the invention, according to a third embodiment in which the bag comprises a carrying strap comprising two separate strands; • [Fig.6] schematically represents a bag according to the invention, in which the straps are fixed to a front part of the bag. DETAILED DESCRIPTION OF THE INVENTION

[0051] The present description is given without limitation, each characteristic of an embodiment being able to be combined with any other characteristic of any other embodiment in an advantageous manner.

[0052] It should be noted, from now on, that the figures are not necessarily to scale.

[0053] [Fig.l] and [Fig.2] schematically illustrate a bag 100 according to the invention, according to a first embodiment.

[0054] The bag 100 is here a backpack, comprising two straps 110 each extending from a so-called upper part 101 of the bag.

[0055] The straps 110 are intended to be worn each on a separate shoulder of an individual. The bag 100 is here of the backpack or satchel type.

[0056] The straps 110 may each be adjustable in length. For this purpose, each strap 110 may for example comprise an adjustment buckle.

[0057] In the remainder of this description, the terms “top” and “upper” used in opposition to the terms “bottom” and “lower” are defined with reference to a carrying axis Z along which the bag 100 is configured to be carried, i.e. when the shoulder straps rest on the shoulders of an individual. The carrying axis Z is substantially parallel to a longitudinal axis of the individual.

[0058] The term “front” used in opposition to the term “rear” is defined with reference to a front-rear axis X when the bag 100 is carried on the shoulders of an individual. The front-rear axis X is substantially parallel to an anteroposterior axis of the individual carrying the bag 100. The rear of the bag 100 is here defined as being the side intended to come into contact with the back of the individual carrying the bag 100, and the front of the bag as the side opposite the rear of the bag 100.

[0059] The terms "lateral" and "side" are defined with reference to a transverse axis Y when the bag 100 is carried on the shoulders of an individual. The transverse axis Y is substantially parallel to a transverse axis of the individual carrying the bag 100.

[0060] The X, Y and Z axes are here orthogonal to each other.

[0061] The bag 100 comprises an envelope 120, which in the example shown takes the form of a pocket, made for example of fabric.

[0062] The envelope 120 may include a closure mechanism 128, such as a zipper or ratchet, for opening and closing access to the interior of the envelope 120.

[0063] The interior of the envelope 120 here delimits a storage volume, which is subdivided into a main storage volume 121 and a secondary storage volume 122.

[0064] Here, the envelope 120 comprises lateral sides 123, and a back 124 and a front portion 125 opposite the back 124 and each connecting the lateral sides 123 to each other.

[0065] The bag 100 further comprises a so-called carrying strap 130, which is mounted on the bag 100.

[0066] In the example illustrated in [Fig.l] and [Fig.2] in particular, the carrying strap 130 comprises a single strand.

[0067] The carrying strap 130 comprises a first end 131 and a second end 132 opposite the first end 131, which extend outside the envelope 120, and a central portion 133 extending at least partly inside the envelope 120.

[0068] Preferably, the central portion 133 is wider than the ends 131 and 132 of the carrying strap. For example, the central portion 133 may have a width greater than or equal to 5 centimeters, preferably of the order of 8 centimeters. This has the effect of pressing the back 124 of the bag 100 onto a wider part of the back of the individual carrying the bag, and thus allows a better distribution of the forces towards the hips and / or the waist of the individual.

[0069] The carrying strap 130 is intended to encircle or surround the hips and / or waist of an individual.

[0070] The carrying strap 130 may comprise opening and closing means 140, for example of the buckle or click or “quick” closure type, in order to be able to wrap the carrying strap 130 around the waist or hips of an individual.

[0071] Preferably, the carrying strap 130 also comprises a means for adjusting the length of the strap, such as an adjustment buckle 134.

[0072] Here, the envelope 120 comprises lateral sides 123 which are each provided with a passage slot 126 allowing the passage and sliding of the carrying strap 130.

[0073] Thus, the first end 131 of the carrying strap 130 extends outside the envelope 120 of a first of the lateral sides 123, the central portion 133 of the carrying strap 130 enters the envelope 120 through a first of the passage slots 126 and extends inside the envelope 120, then exits through a second of the passage slots 126, and the second end 132 of the carrying strap 130 extends outside the envelope 120 of a second of the lateral sides 123.

[0074] When closed, that is to say when the ends 131 and 132 meet, the carrying strap 130 configures a tightening perimeter encircling at least the main storage volume 121.

[0075] Here, when the bag 100 is carried by an individual, the carrying strap 130 configures a tightening perimeter encircling the main storage volume 121 as well as the hips and / or waist of the individual.

[0076] In the example illustrated, the main storage volume 121 is thus delimited by an inner wall of the back 124, a first portion of each of the lateral sides 123 and the carrying strap 130 inside the envelope 120.

[0077] In other words, the carrying strap 130 delimits a first sub-space inside the envelope 120.

[0078] The secondary storage volume 122 here corresponds to the volume of the envelope 120 from which the main storage volume 121 is subtracted, that is to say the volume delimited by an interior wall of the front part 125, a second portion of each of the lateral sides 123 and the carrying strap 130 inside the envelope 120.

[0079] In other words, the carrying strap 130 delimits a second sub-space distinct from the first sub-space, inside the envelope 120.

[0080] The secondary storage volume 122 is not encircled by the carrying strap 130, when it is closed.

[0081] When a load, such as notebooks and / or books for example, is placed in the envelope 120, the load can be distributed between the main storage volume 121 and the secondary storage volume 122.

[0082] The portion of the load which is placed in the main storage volume 121 can be gripped by the carrying strap 130.

[0083] It should be specified that the first sub-space and the second sub-space delimited by the carrying strap 130 can thus depend in particular on the shape of the part of the load which is placed in the main storage volume 121.

[0084] In a variant not illustrated, the bag 100 comprises a plurality of passage slots 126 on each of the lateral sides 123, in which the carrying strap 130 can selectively pass, which makes it possible to adjust the subdivision of the interior volume of the envelope 120 into a main storage volume 121 and a secondary storage volume 122.

[0085] The operation of the bag 100 is as follows:

[0086] The user of the bag 100 places a load inside the envelope 120, redistributing the load in the main storage volume 121 and / or in the secondary storage volume 122.

[0087] The user then puts on the straps 110 of the bag 100 so that they rest on his shoulders.

[0088] Then, the user closes the carrying strap 130 around his waist and / or his hips, and tightens it using the adjustment buckle 134.

[0089] The carrying strap 130 then encircles the waist and / or hips of the user, as well as the main storage volume 121 and the load it contains.

[0090] The force exerted, due to its weight, by the part of the load placed in the main storage volume 121 on the user is redirected substantially towards the hips and / or the waist of the user.

[0091] Where appropriate, the force exerted by the part of the load placed in the secondary storage volume 122 is redirected towards the shoulders of the user.

[0092] In this way, by placing all or part of the load in the main storage volume 121, and by placing any remaining load in the storage volume secondary 122, the user can adjust the proportion of the load that is redirected to his hips and / or waist on the one hand, and to his shoulders on the other hand.

[0093] Optionally but particularly advantageously, as can be seen in [Fig.2], the bag 100 may include a stiffening plate 135, mechanically secured to the central portion 133 of the carrying strap 130, for example by sewing.

[0094] For example, the stiffening plate 135 can be made of a rigid plate, for example made of plastic, inserted into a lining, for example made of fabric.

[0095] The stiffening plate 135 may be of different dimensions, ranging from a dimension of the stiffening plate 135 substantially equivalent to that of the central portion 133 of the carrying strap 130, to a dimension substantially equivalent to the section of the envelope 120 in a transverse plane (i.e. substantially orthogonal to the anteroposterior axis when the bag is carried).

[0096] Preferably, the stiffening plate 135 is secured to the carrying strap 130 on the back side 124 of the envelope 120, so that the force exerted by the carrying strap 130 when it is tightened is redirected towards the stiffening plate 135.

[0097] Optionally, the bag 100 may comprise, on each lateral side 123 of the bag 100, an external sheath 150 secured, for example by sewing, to the envelope 120 on the outside thereof. Each external sheath 150 is adapted to allow the passage of the carrying strap 130, which can slide therein. Thus, protection of the carrying strap 130 as well as guidance thereof can be obtained.

[0098] According to an alternative embodiment or in addition, the bag 100 may comprise one or more loops (not shown) each secured to a lateral side 123 of the bag, for example by sewing. The loop(s) are adapted to allow the passage of the carrying strap 130, which can slide in them.

[0099] [Fig. 3] illustrates a second embodiment in which the envelope 120 comprises a main storage pocket 151 which delimits the main storage volume 121.

[0100] The envelope 120 may also comprise a secondary storage pocket 152 which delimits the secondary storage volume 122.

[0101] The main storage pocket 151, and possibly the secondary storage pocket 152 if applicable, may each be formed by separate pockets included inside the envelope 120.

[0102] For example, the primary storage pocket 151 and / or the secondary storage pocket 152 may be a fabric pocket.

[0103] The carrying strap 130 can be arranged between the main storage pocket 151 and the secondary storage pocket 152. Thus, the contents of each of the volumes of storage does not come into contact with the carrying strap 130.

[0104] Here also, optionally but particularly advantageously, the bag 100 may include a stiffening plate 135, mechanically secured to the central portion 133 of the carrying strap 130 and / or to the main storage pocket 151, for example by sewing.

[0105] According to an alternative of the second embodiment, illustrated in [Fig.4], the envelope 120 may comprise an internal separation wall 127 and the main storage pocket 151 may be formed directly by the envelope 120 and the internal separation wall 127. The secondary storage pocket 152 may also be formed directly by the envelope 120 and the internal separation wall 127.

[0106] The internal separation wall 127 may be doubled and the carrying strap 130 may extend inside the internal separation wall 127. Thus, the contents of each of the storage volumes do not come into contact with the carrying strap 130.

[0107] The internal separation wall 127 may also be stiffened, and include a stiffening plate 135 for this purpose, in a manner similar to that described in connection with the embodiment of [Fig.3].

[0108] Optionally, in each of the embodiments of [Fig.l] to [Fig.4], the bag 100 may comprise an internal sheath, secured, for example by sewing, to the envelope 120 inside the latter. The internal sheath is adapted to allow the passage of the carrying strap 130, which can slide therein.

[0109] The internal sheath can be arranged directly inside the envelope 120 when the latter forms a single pocket, or between the main storage pocket 151 and the secondary storage pocket 152, or even in the lining of the internal separation wall 127.

[0110] [Fig.5] illustrates a third embodiment similar to the second embodiment described in [Fig.3] and [Fig.4], but in which the bag 100 comprises a carrying strap 230 which comprises two separate strands 230a and 230b, rather than a single strand.

[0111] Each of the separate strands 230a and 230b has a first end, which respectively form a first end 231 of the carrying strap 230 and a second end 232 of the carrying strap 230.

[0112] Each of the separate strands 230a and 230b further comprises a second end 236, respectively 237, opposite the first end, and which is respectively secured to a wall that the main storage pocket 151 comprises, for example by sewing.

[0113] Here, the second ends 236 and 237 of the separate strands 230a and 230b are subject to the main storage pocket 151 near the lateral sides 123, that is to say substantially on either side of the main storage pocket 151.

[0114] In other words, the carrying strap 230 does not have a central portion here, and the carrying strap 230 cannot slide freely from one side of the bag to the other. However, it should be noted that the separate strands 230a and 230b may each have a certain degree of freedom of movement depending on their length, which may in particular be due to their relative elasticity.

[0115] The operation of the bag 100 according to this third variant embodiment is similar to the operation described for the first variant embodiment in connection with [Fig.l] and [Fig.2].

[0116] However, here when the user tightens the carrying strap 230, the tightening also causes tension on the main storage pocket 151 due to the attachment of the separate strands 230a and 230b to it.

[0117] Thus, the tightening perimeter is configured not only by the carrying strap 230, but also by a portion of the main storage pocket 151, here a portion extending substantially between the second ends 236 and 237 of the separate strands 230a and 230b.

[0118] In this embodiment, the bag may also comprise a stiffening plate (not shown) extending substantially between the second ends 236 and 237 of the separate strands 230a and 230b, and / or comprise sheaths and / or loops (not shown) secured to the envelope 120 outside the latter.

[0119] [Fig. 6] schematically illustrates a bag 100 which comprises straps 110 which are mechanically secured to the bag at the front portion 125 of the envelope 120 of the bag 100, the bag 100 being able to further comprise at least one main storage volume and at least one secondary storage volume similar to those described in connection with one of FIGS. 1 to 5.

[0120] More precisely, the straps 110 are fixed to the bag 100, for example by sewing, at the level of a fixing zone 111 of the front part 125, located on the upper part 101 of the bag 100.

[0121] The bag 100 comprises a top zone 129, along a substantially vertical carrying axis Z of the bag.

[0122] The back 124 is located on a first side of the apex area 129, while the front portion 125 is located, for the most part, on a second side of the apex area 129.

[0123] It should be noted that the apex area 129 may be located on the front portion 125, a minor portion of which may be located on the same side of the apex area 129 as the back 124.

[0124] The attachment zone 111 is located on the side of the apex zone 129 on which the majority of the front part 125 is located, close to the apex zone 129.

[0125] For example, the attachment zone 111 is located a few centimeters from the apex zone 129.

[0126] The straps 110, which each have a first end 112, are secured to the bag 100 at the level of the attachment zone 111.

[0127] Thus, the shoulder straps 110 pass over the apex area 129 when the bag 100 is carried, as shown in [Fig.6].

[0128] This has the effect of exerting tension on the front portion 125 when the bag is carried, and allows for better adaptation of the distribution of the load between the shoulders on the one hand and the hips and / or waist of the wearer of the bag on the other hand. In particular, after tightening the carrying strap 130 to redirect the force exerted by the load contained in the main storage volume towards the hips and / or waist of the wearer, the tightening 110 of the straps of the bag 100 makes it possible to raise the envelope 120 towards the shoulders of the wearer, which has the effect of pulling on the front portion 125 and thus more effectively redirecting the force exerted by the load contained in the secondary storage volume towards the shoulders of the wearer.

[0129] In this embodiment, the first ends 112 of the straps 110 may be further apart from each other than in the case of attachment to the envelope as illustrated in FIGS. 1 to 5.

[0130] The bag 100 shown in [Fig. 6] comprises a carrying strap 130 passing through the passage slots 126 inside the envelope 120 comprising a main storage volume and a secondary storage volume. The carrying strap 130 and the envelope 120 comprising the storage volumes can each be produced according to any one of the embodiment variants described above in connection with FIGS. 1 to 5.

[0131] According to other variants and embodiments not illustrated:

[0132] - The bag may comprise more than two storage volumes, for example three, four or five storage volumes. The carrying strap may define a tightening perimeter surrounding one or more storage volumes. The bag may be configured so that the carrying strap can define a variable tightening perimeter, for example by having a plurality of carrying strap insertion slots.

[0133] - One or more secondary storage volumes may for example each be formed by a pocket of reduced dimensions secured to the bag outside the main storage volume, or by a storage net, for example secured to the bag at one lateral side of the envelope, and adapted to receive for example a bottle.

[0134] - The stiffening plate may comprise a main portion as well as a heel. projecting from the main portion, extending into a lower portion of the secondary storage volume, where appropriate under the secondary storage pocket. In other words, the stiffening plate may have a substantially L-shaped section. Preferably, the heel projects at substantially 80° from the main portion. The heel allows to exert a leverage effect when the carrying strap is tightened, facilitating the carrying of a load placed in the secondary storage volume, in particular when it is significant, for example of the order of several kilograms.

[0135] - The passage slots may be located in a different position than that illustrated in the figures, for example at a position directly adjacent to the back of the bag. The passage slots may, however, be located at any other position on the sides of the envelope.

Claims

Claims

1. Bag (100) of the backpack or satchel type intended to contain a load, comprising two straps (110) each extending from a so-called upper part of the bag and intended to be carried each by a separate shoulder of an individual, the bag comprising an envelope (120) surrounding a so-called main storage volume (121), intended to contain at least part of said load, characterized in that the bag comprises a so-called carrying strap (130; 230), intended to encircle the hips and / or the waist of said individual, comprising a means for opening and closing (140) the carrying strap, the carrying strap configuring a tightening perimeter encircling at least the main storage volume (121), excluding a so-called secondary storage volume (122) included inside the envelope (120), when the strap is closed.

2. Bag (100) according to claim 1, wherein the main storage volume (121), and preferably also the secondary storage volume (122), are each delimited by a storage pocket (151, 152) which is included in the envelope (120).

3. Bag (100) according to claim 2, comprising a main storage pocket (151) and a secondary storage pocket (152) and wherein the carrying strap (130, 230) is arranged between said pockets (151, 152).

4. Bag (100) according to claim 3, comprising an internal separation wall (127) defining with the envelope (120) respectively the main storage pocket (151) and the secondary storage pocket (152).

5. Bag (100) according to any one of claims 1 to 4, wherein said carrying strap (130) is slidable between the main storage volume (121) and the secondary storage volume (122).

6. Bag (100) according to claim 5, comprising one or more guide elements arranged between the main storage volume and the secondary storage volume, and / or arranged outside the envelope, and in which the carrying strap (130) can slide.

7. Bag (100) according to claim 6, wherein the guide elements are formed by loops fixed to the bag and / or one or more sleeves fixed to the bag.

8. Bag (100) according to any one of claims 2 to 4, wherein said carrying strap (230) is mechanically secured to the pocket

9.

10.

11. storage (151) delimiting the main storage volume, preferably by sewing. Bag (100) according to claim 8, in which the carrying strap (230) is formed by two separate strands (230a, 230b), and the storage pocket (151) delimiting the main storage volume (121) comprises a wall, the separate strands (230a, 230b) being mechanically secured to the wall on either side of said storage pocket, and the two separate strands (230a, 230b) of the carrying strap and a portion of said wall together configuring said tightening perimeter. Bag (100) according to any one of claims 1 to 9, comprising at least one stiffening plate (135) arranged at the height of the carrying strap (130; 230). Bag (100) according to any one of claims 1 to 10, wherein the envelope (120) comprises a back (124) intended to rest against the back of the individual and a front part (125) opposite the back (124), and a top zone (129) of the bag along a substantially vertical carrying axis (Z) of the bag (100), the back (124) being located on a first side of the top zone (129), and wherein the shoulder straps (110) are secured to the envelope (120) on the front part (125) of a second side of the top zone (129) opposite the first side of the top zone (129), so that a joint adjustment of the shoulder straps (110) and the carrying strap (130; 230) makes it possible to adjust the distribution of the forces exerted by said load between, on the one hand, the shoulders via the shoulder straps (110) and, on the other hand, the hips and / or waist of the individual via the carrying strap (130; 230).

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