EP2394529A2 - Rucksack such as a hydration rucksack - Google Patents

Abstract

The backpack (1) has two carrying straps (4a, 4b) configured to position and maintain a main rear pocket (2) on shoulders of the wearer. A base panel (8) and an outer panel are made of a flexible material, where the base panel is extended at ends (6a, 6b) of the rear pocket for forming a closed side loop for passing arms of user. The outer panel is adjusted on the base panel at level of a zone in contact with shoulder of wearer. An adjusting unit adjusts the outer panel on the base panel in the zone.

Description

The invention relates to a backpack and in particular to a backpack hydration, for example for hiking or mountain, especially for sportsmen, such as runners or followers of orientation races.

Many forms of backpacks have been developed to carry loads on the back. These bags are used in walking, traveling, hiking, climbing, cycling races ...

Conventionally, the backpacks comprise a main dorsal pouch of flexible material contiguous to a back portion of rigid material, said main pocket being intended to receive a load and possibly being associated with a plurality of inner or outer secondary pockets.

The dorsal main pocket forms the body of the backpack and is held in place by two carrying straps. The straps are attached to the back portion from which the volume of the dorsal main pouch extends outwardly in the loaded state.

The height adjustment of the backpack can be performed by varying the length of the carrying straps through loops and loops leaving free and hanging ends of the shoulder straps.

These backpacks are for example used as a hydration backpack for the transport of liquids. The hydration backpacks are designed to hydrate the wearer easily during the practice of sport such as cycling, jogging, rollerblading ... The hydration backpack contains a fluid reservoir whose liquid is accessible to the wearer by suction on a nozzle mounted on a suction tube which extends through an opening on the top of said fluid reservoir. Thus, the wearer can drink the liquid contained in the fluid reservoir on demand.

The backpack, described in the application EP-A-1745719 , comprises a main dorsal pocket formed by two flexible panels. The first base panel integrates the two shoulder straps. The second outer panel can be fitted to the first base panel by means of adjustment means arranged on the back portion of the bag, therefore not very accessible when the bag is worn.

However, it is found that aeration of these backpacks is not always optimized. In particular, the back portion rigid monobloc material does not allow air circulation between the bag and the back of the wearer. The lack of ventilation then promotes the wearer's perspiration.

In addition, the back portion of rigid material is not adapted to the morphology of the wearer, which can cause discomfort during the effort thereof.

In addition, the load tends to accumulate in the bottom of the main dorsal pocket, so that it is more difficult to maintain in place during the movement of the user, and can bounce or move laterally on the back of it.

In addition, the loops and loops for adjusting the height of the backpack are abrasive parts that can rub and hang the user's clothing, causing premature wear.

The present invention therefore aims to provide an improved rucksack which at least partially solves the aforementioned drawbacks by presenting a better comfort and being adapted to the body of the user to no longer represent an inconvenience for it by allowing a better distribution weight of the load and providing better evacuation of perspiration between the back of the user and the backpack.

To this end, the subject of the invention is a backpack comprising a dorsal main pocket intended to receive a load and carrying shoulder straps configured to position and maintain said main dorsal pocket on the shoulders of a user, characterized in that said main dorsal pocket is formed by the joining of a first base panel of flexible material, intended to be in contact with the body of the user and a second outer panel also of flexible material, said first base panel being extending at the ends of said main dorsal pocket to form two closed side loops for the passage of the arms of said user, forming said shoulder straps.

With carrying straps fully integrated into the first base panel, the backpack slips onto the wearer's back like a vest or jacket. The shoulder straps in closed side loops maintain the load of the main dorsal pocket by wrapping it against the back of the user. The backpack then adapts to the body morphology of the user, which facilitates the freedom of movement thereof. The backpack then follows the mobility of the human body, so that the posture and balance of the body are not affected by the weight of the load.

In addition, the main dorsal pouch made entirely of flexible material allows that in the loaded state, it deforms against the back of the user by promoting the circulation of air between the bag and the back of the wearer, reducing the sweating of the wearer during an effort.

In addition, the backpack is less abrasive because the first base panel has no abrasive element in contact with the clothes of the user. Indeed, the shoulder straps in closed side loops are continuously formed in the base panel so that the number of loops and loops directly in contact with the clothes of the user is reduced.

The first base panel may have a generally heart-shaped generally whose notched portion is located at a neckline from which said carrying straps originate.

The shoulder straps can join a dorsal portion of the first base panel, at a lower region, forming an angle of less than 30 ° with a substantially horizontal line. The almost horizontal projection of the straps allows a better stability of the load, especially when the user practices the race.

According to an exemplary embodiment, the main dorsal pocket has at least a first compartment and a second compartment, said first compartment of the main back pocket being formed by the joining of the first base panel with an intermediate panel of the second outer panel and the second compartment being formed by the join of the intermediate panel with a side envelope and a retaining panel of the second outer panel, said adjustment means being carried by holding arms of the retaining panel.

The second outer panel fits on said first base panel at a zone intended to be in contact with the shoulders of the user and said backpack further comprises means for adjusting said second outer panel on said first base panel in said area. The adjustment means makes it possible to adjust the second outer panel on said first base panel according to the volume of the charge contained in the main back pocket. Thus, the adjustment means make it possible to adjust the volume of the load in the back of the user according to the load contained in the main back pocket. In addition, the adjustment means are arranged on the outside of the carrying straps and therefore do not come into contact with the clothes of the user. They are further arranged at the shoulders of the user to be more easily accessible by it while the backpack is worn. This ensures a good distribution of volume in the back of the user. In the example of a hydration backpack, it is thus ensured that even when half empty, the fluid reservoir does not remain at the bottom of the back of the user.

The first base panel may include a bellows connected to said second outer panel to form said main back pocket so that in the loaded state, said main back pocket deforms into a convex shape towards the back of the user. The dorsal main pouch made entirely of flexible material allows that in the loaded state, said uniformly deformed pouch forms a balanced carrying system which reduces weight carrying loads on the body, reducing the carrying load and repositioning the main pocket. dorsal in a more comfortable position on the human body.

The bellows has an elongate shape for substantially aligning with the user's spine, forming side vents for venting air on either side of said main dorsal pocket. The main dorsal pocket may have a substantially thin profile shape at its lower end. The shape of the main pocket is then provided to free space to allow the torso body to breathe and prevent perspiration.

The backpack may include at least one chest strap and / or at least one lap strap for connecting said carrying straps together at the torso of the user. Advantageously at least two straps, a "high" strap and a "low" strap, spaced in height on the torso of the user, are provided to hold the straps in position and prevent them from pivoting around the arms of the user. user when the bag is in the loaded state.

According to one embodiment, said carrying straps respectively comprise a first socket strip and a second socket strip and each thoracic and / or abdominal strap comprises at least one clip, configured to cooperate with a socket of one of said socket strip , and adjustment means for adapting the length of the chest and / or abdominal straps to said user.

For example, at least one thoracic and / or abdominal strap has two anchor points at a first carrying strap and a sliding fastener configured to cooperate with a catch of a stub of the second carrying strap.

The chest and / or abdominal straps can thus attach to different levels of height of the torso of the user, allowing multiple adjustment possibilities. In addition, the chest and / or abdominal straps attach at the level of the socket strips, located on the shoulder straps, and not on the torso of the user, thus avoiding contact with clothing or the body of the 'user. Moreover, the fasteners can be attached to either the right or left shoulder straps, so that the chest and / or abdominal straps can be adjustable for a right-handed or left-handed user.

Said adjustment means may be elastic. They have the advantage of being non-abrasive and facilitate the user's breathing by allowing free movement of the thorax.

• lesdites bretelles de portage présentent une portion élastique à leurs jointures avec une partie dorsale dudit premier panneau de base au niveau d'une région inférieure,
• ledit premier panneau de base est formé de pièces assemblées de tissu tridimensionnel configuré pour évacuer la transpiration,
• ledit sac à dos comporte en outre une ceinture ventrale.

According to one or more other characteristics of the backpack, taken alone or in combination,

• said carrying straps have an elastic portion at their joints with a back portion of said first base panel at a lower region,
• said first base panel is formed of assembled pieces of three-dimensional fabric configured to wick away perspiration,
• said backpack further comprises a lap belt.

According to an exemplary hydration bag application, the backpack seam between said first base panel and said second outer panel has an orifice at a lower region for passage of a flexible suction tube. leaving a fluid reservoir intended to be received in said back main pocket, and at least one of said carrying straps comprises guide means upwardly of said flexible suction tube on said carrying strap. The passage of the flexible suction tube under the user's arm facilitates its holding and its movement in the use or withdrawal positions.

Said guide means may comprise at least one guide ring.

Alternatively or in addition, said guide means comprise at least one guide tunnel.

The invention also relates to a backpack as described above for hydration, comprising a fluid reservoir received in said back main pocket, said fluid reservoir having a horizontal outlet port for guiding the flexible suction tube to a shoulder strap. This avoids the presence of bend at the outlet of the fluid reservoir may hinder the flow of liquid and placing the suction hose directly in the axis of the carrying strap.

The invention also relates to a backpack comprising a back pocket for receiving a load and carrying straps configured to position and maintain said back pocket on the shoulders and back of a user, a fluid reservoir received in said back pocket and a flexible suction tube connected to the back pocket by a first end, the second end having a mouthpiece characterized in that said pocket comprises an orifice placed in the lower part of said bag through which the flexible suction tube passes and in that at least one of said carrying straps comprises fixing means for attaching the flexible suction tube going up from the lower part of the ramp to the top of it.

Preferably, the means for fixing the flexible suction tube to the shoulder strap comprise a tunnel.

• la figure 1 est une vue de face d'un premier exemple de réalisation d'un sac à dos d'hydratation,
• la figure 2 est une vue de dos du sac à dos d'hydratation de la figure 1 dont les pièces des bretelles de portage sont désassemblées dans une région supérieure dudit sac pour faciliter la visualisation à plat et déplié,
• la figure 3 représente un premier panneau de base du sac à dos de la figure 2 en cours de fabrication, dont les pièces des bretelles de portage sont désassemblées dans une région supérieure dudit sac pour faciliter la visualisation à plat et déplié,
• la figure 4 représente un deuxième panneau externe du sac à dos de la figure 2,
• la figure 5 est une vue de dos d'un utilisateur portant le sac à dos à l'état chargé,
• la figure 6a est une vue de côté de l'utilisateur portant le sac à dos de la figure 5,
• la figure 6b est une vue schématique en coupe transversale du sac à dos de la figure 5,
• la figure 7 est une vue partielle de biais de l'utilisateur portant le sac à dos de la figure 5 et sur lequel on distingue des moyens d'ajustement des sangles thoraciques,
• la figure 8 est une vue ¾ arrière d'un sac à dos d'hydratation selon un deuxième exemple de réalisation, et
• la figure 9 est une vue analogue à la figure 2 du sac à dos de la figure 8.

Other advantages and characteristics will appear on reading the description of the invention, as well as on the appended figures in which:

• the figure 1 is a front view of a first embodiment of a hydration backpack,
• the figure 2 is a back view of the hydration backpack of the figure 1 whose parts of the carrying straps are disassembled in an upper region of said bag to facilitate viewing flat and unfolded,
• the figure 3 represents a first basic panel of the backpack of the figure 2 during manufacture, the parts of the carrying straps are disassembled in an upper region of said bag to facilitate viewing flat and unfolded,
• the figure 4 represents a second outer panel of the backpack of the figure 2 ,
• the figure 5 is a back view of a user wearing the backpack in the loaded state,
• the figure 6a is a side view of the user wearing the backpack of the figure 5 ,
• the figure 6b is a schematic cross-sectional view of the backpack of the figure 5 ,
• the figure 7 is a partial bias view of the user wearing the backpack of the figure 5 and on which one distinguishes means of adjustment of the chest straps,
• the figure 8 is a rear view of a hydration backpack according to a second embodiment, and
• the figure 9 is a view similar to the figure 2 of the backpack of the figure 8 .

• Les figures 1 à 9 représentent un sac à dos 1, 1', par exemple pour la pratique de la randonnée ou de la montagne, destiné notamment à des sportifs, tels que les coureurs de fond ou les adeptes de courses d'orientation. Sur l'exemple particulier des figures 1 à 9, le sac à dos 1, 1' est destiné à l'hydratation d'un sportif au cours de l'effort.
• Les figures 1 à 7 illustrent un premier exemple de sac à dos 1 comprenant une poche principale dorsale 2 (en pointillés sur les figures 1 et 3) destinée à recevoir une charge, telle que des denrées alimentaires, une couverture de survie, un vêtement, ou ici un réservoir à fluide 3.

In these figures, the identical elements bear the same reference numbers. In the rest of the text, notions of superior, inferior, high and low, horizontal and vertical will be used in reference to the standing position of a user.

• The Figures 1 to 9 represent a backpack 1, 1 ', for example for the practice of hiking or mountain, intended in particular for sportsmen, such as cross-country runners or fans of orientation races. On the particular example of Figures 1 to 9 , the backpack 1, 1 'is intended for the hydration of an athlete during the effort.
• The Figures 1 to 7 illustrate a first example of a backpack 1 comprising a main dorsal pocket 2 (dashed on the figures 1 and 3 ) for receiving a load, such as food, a survival blanket, a garment, or here a fluid reservoir 3.

The main dorsal pocket 2 may comprise one or more compartments.

The backpack 1 also includes carrying straps 4a, 4b, configured to position and maintain the main dorsal pocket 2 on the shoulders of a user 5.

The main dorsal pocket 2 has two ends 6a, 6b, an upper end 6a and a lower end 6b, and an opening 7 (see FIG. figure 2 ). The opening 7 is for example horizontal and placed at the upper end 6a of the backpack 1 while the lower end 6b is closed. An elastic drawstring can then be provided to tighten the opening 7 of the bag 2 in the loaded state.

Other embodiments of closing or opening are also possible, such as a vertical opening disposed between the two ends 6a, 6b and can be closed by a zipper (not shown).

The main dorsal pocket 2 is formed by joining a first base panel 8 of flexible material ( figure 3 ), intended to be in contact with the body of the user 4 and a second external panel 9 ( figure 4 ) also of flexible material.

The first base panel 8 extends at the ends 6a, 6b of the main dorsal bag 2 to form two closed side loops for the passage of the arms, forming the carrying straps 4a, 4b.

With carrying straps 4a, 4b fully integrated in the first base panel 8, the backpack 1 is slipped on the back of the user 5 as a vest or jacket. The carrying straps 4a, 4b in closed lateral loops make it possible to maintain the load of the main dorsal pouch 2 by wrapping it against the back of the user 5 (see for example the figure 5 ). The backpack 1 then adapts to the body morphology of the user 5, which facilitates the freedom of movement thereof. The backpack 1 then follows the mobility of the human body, so that the posture and balance of the body are not affected by the weight of the load.

In addition, the main dorsal pocket 2 made entirely of flexible material makes it possible for the loaded state to deform against the back of the user 5 by promoting air circulation between the bag 1 and the back of the wearer. , reducing the sweating of the wearer during an effort.

In addition, the backpack 1 is less abrasive because the first base panel 8 has no abrasive element in contact with the clothes of the user 5. Indeed, the shoulder straps 4a, 4b in closed side loops are continuously formed in the base panel 8 so that the number of loops and loops directly in contact with the clothes of the user 5 is reduced. To allow an adaptation of the backpack to users of different sizes, such as S , M, L, it can be provided that the length of the straps is adjustable. For this, each carrying strap has a first sleeve portion (not shown). The sleeve is disposed in the width of the carrying strap and is configured so that a second portion of said carrying strap can be slid and held therein to reduce or lengthen the length of the carrying strap. The sleeve thus makes it possible to adapt the backpack to the size of the user without adding contact of loops or loops with the clothes or the body of the user.

The sleeve may be replaced by a simple tongue which would be inserted between known type of adjustment means (buckle, strap, .....) and the body of the user.

The backpack 1 may also include one or more external secondary pockets. In the example shown on the Figures 1 and 2 the hydration backpack 1 thus has a first secondary pocket 10 in the second outer panel 9, centered on the main dorsal pocket 2 (dashed on the figures 2 and 4 ), to be distinct from the housing of the main back pocket 2 for example to receive a fluid reservoir 3. The backpack 1 further comprises a second and a third secondary pocket 11, 12 arranged at the lower levels of the shoulder straps. 4a, 4b respectively of the bag 1. The openings 13 of the second and third secondary pockets 11, 12 are for example closed by a magnetic means 14 or by a zipper 15.

The first base panel 8 has a generally heart-shaped shape ( figure 3 ) whose notched portion 16 is located at a neckline from which the carrying straps 4a, 4b arise.

The first base panel 8 may be formed of assembled pieces of three-dimensional fabric configured to wick away perspiration. The three-dimensional fabric is for example in honeycomb polyhedron mesh, as shown in the figures, or has a wavelet shape, forming an alternating succession of hollow and solid tubes. These fabrics reduce the surface in contact with the body or the clothes of the user 5, to reduce perspiration.

The first base panel 8 comprises a bellows or an elastic portion connected to the second outer panel 9 to form the main dorsal pocket 2. The elastic portion or bellows, is more flexible than the second outer panel 9 vis-à-vis so than in the loaded state (see Figures 6a, 6b ), the main dorsal pocket 2 deforms by taking a convex shape towards the back of the user 5. The main dorsal pocket 2 made entirely of flexible material allows that in the loaded state, the uniformly deformed pocket 2 forms a system balanced carrying which reduces the weight carrying load on the body, reducing the carrying load and repositioning the main dorsal pocket 2 in a more comfortable position on the human body.

The second outer panel 9 has, for example, a substantially thin profile shape at the lower level of the bag 1 at the lower end 6b, and the holding arms 17a, 17b at the upper level (see FIG. figure 4 ) on either side of the indented portion 16 and the opening 7. The main dorsal pocket 2 then has an elongated bellows intended to align substantially with the spine of the user 5, bulging towards the back of the user in the loaded state forming air evacuation lateral chimneys 18 on either side of the main back pocket 2 ( figure 6b ). The shape of the main pocket 2 is then provided to free space to allow the body of the user 5 to breathe and prevent perspiration.

The lateral exhaust ducts 18 are delimited by the bellows connecting the first base panel 8 to the second outer panel 9, by the anchoring zone of the shoulder straps and by the body of the user.

The carrying straps 4a, 4b join a dorsal portion of the first base panel 8, at a lower region, forming an angle α with a substantially horizontal straight line, less than 30 °. The almost horizontal projection of the straps 4a, 4b allows a better stability of the load, especially when the user 5 practice the race.

The first base panel 8 may comprise an elastic portion 19 at its joint at a lower region of each anchorage of the carrying straps 4a, 4b, for better adaptation to the body of the user 5 (see more particularly the figure 3 ).

In the embodiment shown, the elastic portion 19 provides a dual function. On the one hand, it ensures a slightly elastic anchoring of the straps. On the other hand, it serves as a bellows connecting the first base panel 8 to the second outer panel 9, which bellows for deformation of the pocket towards the user's back. The more the bellows is expanded (the more the elastic portion is extended), the lower the main part of the dorsal main bag 2 will be large, and the lateral exhaust air ducts 18 will have a large section.

The carrying straps 4a, 4b have for example a width of between 5 and 12 cm in an upper region of the first base panel 8 and a width of between 5 and 15 cm in a lower region of the base panel. This width can also be reduced, for example by reinforcing the material of the base panel 8.

It also provides seams "edge to edge" on the assembled parts of the panels 8 and 9, protected by protective strips, so as to avoid beads that can be abrasive on clothing. Thus, it avoids any wear of the clothes by the backpack 1.

The second outer panel 9 fits on the first base panel 8 at a zone intended to be in contact with the shoulders of the user 5. In addition, the backpack 1 comprises means for adjusting the length the second outer panel 9 on the first base panel 8, in said area.

The adjustment means are provided on the holding arms 17a, 17b at the upper level of the second outer panel 9. They make it possible to adjust the second outer panel 9 on the first base panel 8 as a function of the volume of the load contained in the Dorsal main pocket 2. Thus, the length of the carrying straps 4a, 4b is fixed but the adjustment means make it possible to adjust the volume of the load in the back of the user according to the load contained in the main dorsal pocket 2.

In addition, the adjustment means are arranged on the outside of the carrying straps 4a, 4b and therefore do not come into contact with the clothes of the user 5. They are furthermore arranged at the user's shoulders 5 for be more easily accessible by it while the backpack 1 is worn.

As visible on the figure 2 , the length adjustment means comprise for example an elastic rope 20 housed in the upper edges of the second outer panel 9 at the holding arms 17a, 17b. The elastic cord 20 is arranged so that by pulling it at each holding arm 17a, 17b, the entire second outer panel 9 is pulled up from the bag 1, thus raising the load and pressing it against the first panel basic 8.

According to an alternative embodiment not shown, the adjustment means comprise two straps interconnected by an adjustable loop. A first strap is attached to the upper level of the first base panel 8, on the outer side, and a second strap is attached to the end of the corresponding holding arm of the second outer panel 9, so that by adjusting the length of the straps adjustment means in length, it adjusts the position of the load in the backpack 1.

This ensures a good distribution of the volume in the back of the user 5. In the example of a hydration backpack 1, it ensures that even half empty, the reservoir to fluid 3 does not stay at the bottom of the user's back 5.

In addition, to ensure the maintenance of the backpack 1 in position on the shoulders of the user 5 and prevent it from moving laterally in the back, and to prevent the shoulder straps 4a, 4b from deviating according to the volume of the main dorsal bag 2, the backpack 1 comprises at least one strap for connecting the carrying straps 4a, 4b to each other at the torso of the user 5.

As shown on the figure 1 two chest straps, an upper strap 21 and a lower strap 22 are provided, spaced in height on the torso of the user 5, to hold the carrying straps 4a, 4b in position and prevent them from pivoting around the arms of the user 5 when the backpack 1 is in the loaded state, which is particularly necessary in the case where the carrying straps 4a, 4b protrude almost horizontally.

According to the exemplary embodiment shown in this figure, the carrying straps 4a, 4b respectively comprise a first socket strip 23 and a second socket strip 24. Each socket strip 23, 24 is for example formed by a cord fixed on the corresponding carrying shoulder 4a, 4b, by a plurality of regularly spaced attachment points, for example two centimeters, leaving slack to the string thus forming several loops, or taken, between each point of attachment. We thus distinguish seven loops on the terminal strip 23 of the example of the figure 7 . The cord may for example be composed of high strength fibers such as Kevlar fibers.

Provision can also be made for the carrying straps 4a, 4b to have an armature 23b (shown in dotted lines in the figure) disposed beneath the grip strips 23, 24. The armature 23b has, for example, a small thickness and a width of the order of 1, 5 centimeters to be integrated between two assembled parts of the first base panel 8 and not to hinder the comfort of the user.

The armature 23b is shaped to follow the rounded shape of the carrying strap 4a, 4b, thus making it possible to reinforce and maintain the carrying straps 4a, 4b when they are attached to the thoracic straps 21, 22.

In addition, each thoracic strap 21, 22 has a clip, such as a hook clip 25a (visible on the upper and lower chest straps 21 and 22). figure 1 ) or a loop fastener 25b (visible on the upper thoracic strap 21 of the figure 7 ), and a hook fastener 26 at the other end of the strap 21, 22. In addition, said straps 21, 22 are provided with adjustment means 27, such as elastic ( figure 7 , elastic cord) or adjustable buckle ( figure 1 ), to adapt the length of the chest straps 21, 22 to the user 5.

The fastener 25a, 25b cooperates with a loop of the first bar 23 and the hook clip 26 cooperates with a loop of the second bar 24.

The chest straps 21, 22 can thus attach to different levels of height of the torso of the user 5, allowing multiple adjustment possibilities.

In addition, the thoracic straps 21, 22 attach to the level of the socket strips 23, 24, located on the carrying straps 4a, 4b, and not on the torso of the user 5, thus avoiding contact with the clothes or the body of the user 5.

Moreover, the hooked fasteners 25a, 26 are fastening means that are easy to fasten and unhook.

Elastic adjustment means are preferred because they have the advantage of being non-abrasive and of facilitating the breathing of the user by allowing free movement of the thorax.

The hook-and-loop fasteners 25a, 26 can be attached to either the right or left shoulder straps 23, 24 of the right or left shoulder straps 4a, 4b, so that the straps 21, 22 can be adjustable for both right-handed and left-handed users.

Each socket strip 23, 24 is for example aligned on one end of the carrying straps 4a, 4b, or may form a zigzag along the width of the carrying strap 4a, 4b to better wrap the strap and improve its clamping (not shown ).

The backpack 1 may also include a lap belt (not shown). The lap belt is disposed below the lower region of inking shoulder straps 4a, 4b. It is formed of two straps joining to attach after having walked around the belly of the user 5. In one embodiment, the lap belt has an additional independent pocket. According to another embodiment, the lap belt is made in continuity with the first and second panels 8, 9 so that it extends the depth of the main dorsal pocket 2, the closed end of the main dorsal pocket 2 being then arranged at the lower level of the ventral belt.

These backpacks are for example used as a hydration backpack for the transport of liquids. Hydration backpacks are designed to hydrate the wearer easily during sports practice.

The joint between the first base panel 8 and the second outer panel 9 then has an orifice 28 ( figure 2 ) for the passage of a flexible suction tube 29 coming out of a fluid reservoir 3 to be received in the main dorsal pocket 2. The reservoir 3 comprises at least one filling opening having a relatively large diameter and a closure cap 30 (visible in transparency on the figure 3 ) for closing the filling opening. The main dorsal pocket 2 is then adapted to receive a fluid reservoir 3 with a capacity of 1 to 20 liters.

The flexible suction tube 29 extends from an outlet port 34 of the fluid reservoir 3 to which it is connected, for example via a hydraulic quick coupling (or "quick connect" in English) facilitating the mounting of the flexible tube 29 on the fluid reservoir 3, and extends to a distal end on which a mouthpiece 31 is mounted. The outlet port 34 of the fluid reservoir 3 is horizontal (either to the right or to the left) to guide the flexible suction tube 29 towards the lower part of the corresponding carrying strap 4a or 4b, so that the flexible suction tube 29 rises to the upper level of the backpack 1 along the carrying strap 4a or 4b, under the arm of the user. This avoids the presence of elbow at the outlet of the fluid reservoir 3, which can hinder the flow of liquid in the suction hose 29. The outlet port 34 horizontal allows to directly place the flexible suction tube 29 in the axis of the carrying strap 4a, 4b almost horizontally.

The passage of the flexible suction tube 29 under the user's arm also facilitates its holding and its displacement in the use or withdrawal positions.

For this purpose, the carrying straps 4a, 4b comprise guide means for raising the suction flexible tube 29 to guide the displacement of the flexible suction tube 29 in a position of use or in a retracted position (see FIG. figures 2 or 9 ), depending on whether the user pushes or pulls him towards him.

For example, the guide means comprise a plurality of guide rings 32, which can be uniformly distributed over the outer edge of the carrying straps 4a, 4b, to retain and guide the displacement of the flexible suction tube 29 along the shoulder strap. It is thus possible to arrange a row of guide rings 32 on each shoulder strap 4a, 4b, so as to allow the user to insert the suction tube 29 on the right side or on the left side of the backpack 1 .

Alternatively or additionally, the guide means comprise a guide tunnel 35 for retaining and guiding the displacement of the flexible suction tube 29.

For example and as visible on Figures 1 and 2 , the guide tunnel 35 is formed by a lining of the carrying strap 4a.

According to a second exemplary embodiment of the backpack 1 'illustrated on the Figures 8 and 9 , the main dorsal bag 2 comprises a first compartment for example for receiving the fluid reservoir 3 and a second compartment for example for receiving foodstuffs or clothing.

In this second exemplary embodiment, the second outer panel 9 comprises an intermediate panel 36, a lateral envelope 37 and a retaining panel 38, to increase the load capacity of the housing of the main back pocket 2.

The first compartment of the main dorsal pocket 2 is formed by the joining of the first base panel 8, intended to be in contact with the body of the user 4, with the intermediate panel 36 of the second outer panel 9.

The intermediate panel 36 is attached, for example sewn, to the base panel 8, on either side of a first opening 7a of the first compartment to form a bellows or an elastic portion between the base panel 8 and the intermediate panel 36, so that in the loaded state, the first compartment of the main dorsal pocket 2 deforms by taking a curved shape towards the back of the user 5.

The joint between the first base panel 8 and the second outer panel 9 also has an orifice (not visible) for the passage of a flexible suction tube 29 coming out of the fluid reservoir 3 ( figure 9 ).

The guiding means up the suction flexible tube 29 along the carrying strap 4a or 4b comprise in this example (visible dashed on the figure 9 ), a guide tunnel 35 comprising a flexible strip of at least 10 cm, for example 15 cm, sewn on the outside of the carrying strap 4a or 4b, for example, at the rear of third secondary pockets 39 The guiding tunnel 35 thus formed holds the suction hose 29 by friction and guides its upward movement of the carrying strap. The guide tunnel 35 is further spaced from the orifice 28, to allow the suction hose 29 to take a retracted position, in which the mouthpiece 31 is away from the user ( figure 9 ).

The intermediate panel 36 is for example sewn to the side casing 37 and the side casing 37 is connected to the retaining panel 38 by a closure system 40, to access the second compartment. We distinguish on the figure 8 , the end of a zipper system 40.

The lateral envelope 37 and the closure system 40 are for example three quarters peripheral, leaving the lower part of the retaining panel 38 directly connected to the base panel 8, at the end 6b of the main back pocket 2.

The adjustment means of the second outer panel 9 on the first base panel 8 are carried by the holding arms 17a, 17b of the retaining panel 38 at a zone intended to be in contact with the shoulders of the user. 5.

These adjustment means comprise a cord 41 whose first end is anchored to a carrying strap 4a or 4b of the first base panel 8, and a second end is left free to be actuated by the user once the bag is closed. back worn. The cord 41 can slide around a bar, for example provided on a latching means 42, the inclination of the bar oriented by the user, to allow or block the sliding of the cord 41, so as to adjust the second outer panel 9 on the first base panel 8.

Once the backpack 1 'worn by the user, the contents of the two compartments can then be adjusted on the back of the user according to his load, for example tightened against the back of the user when the reservoir to fluid 3 emptied, using the accessible adjustment means in front and retaining panel 38. The retaining panel 38 envelope and plate and the contents of the second compartment on the first compartment, avoiding any unbalance to the contents of the main dorsal pocket 2.

The backpack 1 further comprises a thoracic strap 43 and two abdominal straps 44, 45, intended to connect the carrying straps 4a, 4b between each other respectively at the torso of the user 5.

As visible on the figure 9 , the carrying straps 4a, 4b respectively comprise a first socket strip 46 and a second socket strip 47. Each socket strip 46, 47 comprises a rod, for example a plastic rod fixed on the corresponding carrying strap 4a, 4b , a plurality of bridges (for example flexible bands attached to the carrying strap) regularly cover said rod to thereby form a plurality of free spaces of the rod (or taken) between each bridge.

There are thus five outlets on the terminal strips 46, 47 of the example of the figure 9 . The three "high" outlets are for example intended to cooperate with the chest strap attachment 43 and the two "low" outlets are for example intended to cooperate with the fasteners of the abdominal straps 44, 45.

In addition, the thoracic strap 43 has two anchoring points to a first carrying strap 4a and a sliding fastener 48 configured to cooperate with a catch of the grip bar 46 of the second carrying strap 4b.

The two anchoring points of the strap 43 may be constituted by sliding fasteners which are removably attached to the catches of the grip bar of the first strap 4a. Thus a left-handed user can reverse the device of the chest strap, that is to say, place the anchor points on the second strap and the sliding fastener 48 on the first strap.

The strap 43 comprises for example an elastic band and the sliding fastener 48 has a loop provided with a flat hook that can snap onto a socket formed by the plastic rod of the grip bar. The ribbon passes into the loop of the sliding fastener 48 to slide along it and thus adjust the position of the sliding fastener 48 on the ribbon of the strap 43.

There is also provided a lap strap 44, 45 of the same type on each shoulder strap 4a, 4b. Each lap strap 44, 45 thus comprises two anchoring points at a first carrying strap 4a, 4b and a sliding fastener 48 configured to cooperate with a catch of the gripping bar 46, 47 of the second carrying strap 4a, 4b .

A first anchor point may be located near the grip bar 46, 47, on the outer edge of the shoulder strap 4a, 4b while the second anchor point is located in the lower back of the user at the end 6b of the back pocket 2, around the size of the user.

The hydration backpack 1 may also comprise an isothermal envelope (not shown) in the main dorsal pocket 2, intended to envelop the fluid reservoir 3. The isothermal envelope has an opening for the insertion of the fluid reservoir 3 and a hole for the passage of the suction tube 29. The isothermal envelope is configured to preform the fluid reservoir 3 so that it takes good shaped form of the main dorsal pocket 2. The isothermal envelope also allows thermal protection of the fluid reservoir 3. In addition, the isothermal envelope facilitates the handling of the fluid reservoir 3 and its introduction in the main back pocket 2 .

The backpack 1, 1 'thus has a better comfort, it is adapted to the body of the user and no longer presents an inconvenience for it, while allowing a better distribution of the weight of the load and better evacuation of perspiration.

Claims (10)

Backpack comprising a back main pocket (2) for receiving a load, carrying straps (4a, 4b) configured to position and maintain said back main pocket (2) on the shoulders of a user, and a means for link (21, 22, 43, 44, 45) for connecting the carrying shoulder straps (4a, 4b) to one another, characterized in that the connecting means (21, 22, 43, 44, 45) comprises means for connecting elastic adjustment (27, 43, 44, 45). Backpack according to claim 1, characterized in that the connecting means (21, 22, 43) comprises at least two fasteners (25a, 25b, 26, 48) to the shoulder straps (4a, 4b) and a strap or an elastic cord connecting the two fasteners. Backpack according to one of the preceding claims, characterized in that the connecting means (21, 22, 43, 44, 45) comprises fasteners (25a, 25b, 26, 48) to the shoulder straps (4a, 4b ), the fasteners being adjustable at different height levels. Backpack according to one of the preceding claims, characterized in that one and the same fastener (25a, 25b, 26, 48) can be attached to either one of the adjustable carrying straps (4a, 4b) . Backpack according to one of the preceding claims, characterized in that the connecting means comprises two fasteners on a first carrying strap (4a, 4b) and a fastener (48) on the second carrying strap (4b, 4a). . Backpack according to the preceding claim, characterized in that the connecting means (43) comprises a ribbon passing in a loop of the fastener (48) on the second carrying strap (4b, 4a), the two other fasteners being placed respectively at each end of the ribbon. Backpack according to one of the preceding claims, characterized in that a fastener forms a hook (25a, 26, 48) or a loop (25b). Backpack according to one of the preceding claims, characterized in that it comprises at least two connecting means (21, 22, 43, 44, 45). Backpack according to one of the preceding claims, characterized in that said carrying straps (4a, 4b) respectively comprise a first socket strip (23, 46) and a second socket strip (24, 47) and in that that a connecting means (21, 22, 43, 44, 45) includes at least one fastener (25a, 25b, 26, 48) configured to cooperate with an outlet of said first and second array of outlets (23, 24, 46, 47). Backpack according to one of the preceding claims, characterized in that each carrying strap (4a, 4b) is formed by a closed side loop made in a first base panel (8).

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