DEVICE FOR ASSISTING THE DORSAL CARRYING OF A BACKPACK- OR SATCHEL-TYPE BAG

A device to assist the dorsal carrying of a backpack-type or satchel-type bag by an individual, such as a child or a teenager. The bag includes a pair of shoulder straps. The dorsal carry assist device includes a carrying sling to carry the bag and a retaining sling. The carrying sling configured to clasp a portion of the bag and the hips of the individual. The retaining sling to removably retain the carry sling to the bag. The dorsal carry assist device preferably includes a stabilizing sling configured to stabilize the bag.

TECHNICAL FIELD OF THE INVENTION

The field of the invention is that of luggage.

More specifically, the invention relates to a device for assisting the dorsal carrying of a backpack- or satchel-type bag.

In particular, the invention finds applications for assisting an individual such as a child or a teenager to carry on his back a bag that weighs a significant weight, greater than the usual recommendation setting the maximum weight of a bag at 10% of the weight of such individuals.

BACKGROUND OF THE INVENTION

Carrying a heavy bag on a regular basis may turn out to be tedious, and even tricky during an individual's growth period.

The overweight of school bags, which often weigh 20% of the children or teenagers who carry them between their homes and an educational institution, is also a real public health problem. Indeed, carrying such bags might cause deformations in the skeleton, respiratory compressions, and even scoliosis or lumbagos.

In order to remedy this, it is known from the prior art techniques for assisting the carrying of a backpack- or satchel-type bag.

Thus, there are techniques for rolling the bag which is then no longer carried but pulled.

Nonetheless, these techniques are barely satisfactory. Besides the noise generated by the rolling of such a bag, these techniques have the drawback of causing imbalances at the level of the spine. Indeed, such bags are pulled with an arm which is stretched backwards. Such bags are also lifted on a regular basis in order to climb a step or a staircase, which is barely practical and could lead to trauma at the level of a shoulder.

Besides, it should be pointed out that this type of wheeled bag has been banned by some schools, which recommend that their students use a bag carried on the back.

To assist the dorsal carrying of a bag, rigid frames that could be carried by an individual on his back have in particular been developed. These frames are configured to relieve a portion of the weight of a backpack that is brought to rest on an inclined platform of the frame.

Nonetheless, these frames are bulky and even unsightly, making them difficult to use in a school environment.

In order to reduce the bulk of such techniques, there are belts including a platform forming a stop on which the backpack is brought to rest.

Nonetheless, these belts have the drawback of not holding the bag during the movements of the individual who might thus be unbalanced if the bag slips off the platform.

None of the current systems allow simultaneously meeting all of the required needs, namely providing a technique for assisting the dorsal carrying of a backpack- or satchel-type bag which is removable and compactable so that it could be easily stored, practical to use in a school environment, i.e. without hindering the common use of such a bag, and which allows effectively relieving the shoulders of a carrier of such a bag by keeping the bag substantially parallel to the back of the carrier.

OBJECT AND SUMMARY OF THE INVENTION

The present invention aims to overcome all or part of the drawbacks of the aforementioned prior art.

To this end, the invention relates to a device for assisting the dorsal carrying of a backpack- or satchel-type bag by an individual, said bag including a pair of shoulder straps.

It should be pointed out that when carrying such a bag on the back by the individual, each shoulder strap bears on a distinct shoulder of the individual. The bag is then generally oriented according to an axis parallel to the back of the individual. This axis is substantially vertical when the individual stands upright. This axis shall subsequently be called the carry axis.

In general, the bag is substantially symmetrical with respect to a midplane located between the two shoulder straps.

According to the invention, the dorsal carry assist device comprises:a sling for carrying said bag, said sling being intended to clasp a portion of the bag and the hips of said individual; anda means for removable retention of the carry sling to said bag.

Thus, the shoulders of the individual carrying the bag are relieved because the weight of the bag is taken up at least in part by the carry sling which generally clasps the hips of the individual by pressing the bag into the bottom of the back of the individual.

The carry sling, which generally runs in the lower portion of the bag opposite the bottom of the back at the time of carrying, allows shifting all or part of the load from the shoulders to the lumbar and abdominal regions of the individual carrying the bag with the carry assist device.

It should be pointed out that the carry assist device is not permanently attached to the bag as could be the case with a ventral sling of a hiking bag, but removably in order to enable storing thereof when it is no longer used, thus reducing the overall bulk of the bag.

Furthermore, the removable carry assist device could be easily installed on another bag.

In addition, the carry sling surrounding the bag and pressing the bottom of the bag against the bottom of the back, an over-centering effect is obtained, pressing the bag more firmly against the back than does a ventral sling integrated to said bag.

In particular embodiments of the invention, the means for retaining the carry sling to said bag comprises:a retaining sling including two strands each hooked to the carry sling equidistant from a point substantially at the middle of the carry sling, each end of the retaining sling comprising a complementary closure means;a means for setting the length of at least one of the portions of the retaining sling.

In particular embodiments of the invention, the means for setting the length of one of the portions of the retaining sling is elastic.

In particular embodiments of the invention, the device also comprises a means for stabilizing the inclination of the bag with respect to the back of an individual carrying said bag with said device for assisting the back carrying.

Thus, the bag is stabilized in inclination with respect to the back of the individual, which allows holding thereof during the movements made by the individual who can walk or run without any particular discomfort. Furthermore, this improved stability allows avoiding the individual being thrown back by tilting of the bag away from the back of the individual.

In particular embodiments of the invention, the means for stabilizing the inclination of the bag is a central section of the carry sling which has a width larger than that of the other sections of the carry sling.

In particular embodiments of the invention, the means for stabilizing the inclination of the bag is a sling, called a stabilizing sling, attached at each of its ends to points on the carry sling, called attach points, the stabilizing sling having substantially the same length as the central portion of the carry sling, said central portion being comprised between said attach points.

The stabilizing sling allows duplicating the carry sling, thus increasing the retaining points of the bag. The stabilizing sling generally clamps the bag in an area higher than the carry sling which supports the lower portion of the bag when the bag is naturally carried by the individual.

In particular embodiments of the invention, the angle between the central portion of the carry sling and the stabilizing sling is comprised between 10 and 60 degrees.

In particular embodiments of the invention, the width of the carry sling is larger than or equal to the width of the stabilizing sling, the width of the retaining sling being smaller than the width of the stabilizing sling.

In particular embodiments of the invention, the carry sling comprises means for quick closure and length setting of the carry sling.

Advantageously, the carry sling comprises a closure buckle and two setting buckles, located on either side of the closure buckle.

Thus, with two setting buckles, it is possible to tighten the carry sling symmetrically, in particular to avoid destabilizing the position of the device with respect to the bag upon an action of tightening the carry sling of the bag around the hips of the individual.

In particular embodiments of the invention, the central portion of the carry sling forms an angle comprised between 10 and 60 degrees with the rest of the carry sling.

In particular embodiments of the invention, the carry sling is made of high-density polypropylene fiber.

In particular embodiments of the invention, the carry sling comprises at least two so-called lateral pads adapted to be pressed on the hips of the individual carrying the bag.

In particular embodiments of the invention, the retaining sling comprises at least one so-called dorsal pad adapted to be pressed on the bottom of the back of the individual carrying the bag.

The invention also relates to a method for installing a carry assist device according to any one of the preceding embodiments, on a bag comprising a pair of shoulder straps enabling a dorsal carrying of the bag by an individual according to a so-called carry axis, each shoulder strap being attached to the bag on either side of the carry axis.

Such an installation method comprises steps of:closure of the retaining sling by clasping a portion of the bag with the central portion of the carry sling;positioning of the bag on the back of the individual by putting on the shoulder straps of said bag;closure of the carry sling substantially clasping the hips of the individual.

Thus, the individual carrying the bag on his back is relieved by the dorsal carry assist device which shifts a portion of the weight from his shoulders to the lumbar and abdominal regions.

When closed, the retaining sling forms together with a central portion of the carry sling a loop which clasps the portion of the bag, generally located opposite a handle for carrying the bag by hand. This portion of the bag corresponds to a lower portion of the bag when it is carried according to the carry axis.

Preferably, the carry sling substantially clasps the hips and the abdomen of the individual, a means for closing the carry sling being located at the level of the abdomen of the individual.

In particular implementations, the method also comprises prior to the step of positioning the bag on the back, a step of positioning a means for stabilizing the carry device in a middle portion of the bag.

In general, this middle portion is located between the upper portion of the bag where the handle is attached and the lower portion of the bag which is clasped by the carry sling.

DETAILED DESCRIPTION OF THE EMBODIMENT

The present description is given without limitation, each feature of an embodiment could advantageously be combined with any other feature of any other embodiment.

From now on, it should be noted that the figures are not to scale.

Example of a Particular Embodiment

FIG. 1is a schematic view of a dorsal carry assist device100according to the invention.

The carry assist device100comprises a carry sling110, a sling120for retaining the carry sling110to a bag, and a stabilizing sling130. In the present non-limiting example of the invention, the three slings110,120and130are made of high-density polypropylene fiber.

The strap120comprises two strands122each hooked at one of their ends to the carry sling110at a point121located equidistant from a substantially middle point140of the carry sling110. In other words, the carry sling110is substantially symmetrical according to a midplane. Hooking of the strands122to the carry sling110is herein achieved by stitching but could be achieved by any other means known to a person skilled in the art.

In order to be able to easily install the carry assist device100on the bag, the retaining sling120includes a means for opening and closing the retaining sling120which herein comprises a closure buckle125, including two complementary elements. The means for opening and closing the retaining sling120may also include clips or a clasp.

In turn, the stabilizing sling130is attached by sewing at each of its ends at points150of the carry sling110. The points150lie on either side of the middle point140, equidistant from the middle point140. In general, the points121for attaching the strands122of the retaining sling120lie between the points150for attaching the stabilizing sling130to the carry sling110and the middle point140. Nonetheless, the points121and150may advantageously be combined in order to reduce the number of seams made.

In some variants of this particular embodiment of the invention, the points150lie between the points121and the middle point140to reduce the proportion of the slings in contact with the individual when carrying the bag on the back.

FIG. 2is a perspective view of the bag200on which the carry assist device100is installed. In the present non-limiting example of the invention, the bag200is a backpack conventionally used by students as of the age of ten or eleven years. The bag200comprises a large pocket201in which students generally insert the books and notebooks that they have to carry between their educational institution and their home. The bag200also comprises a small pocket202opposite the back203of the bag200for carrying small items, such as keys or pencils.

In order to be carried on the back of an individual and in particular that of a student, the bag200comprises a pair of shoulder straps210. Each shoulder strap210is attached to the bag200substantially symmetrically with respect to a midplane corresponding substantially to a plane of symmetry of the bag200. A handle211allowing carrying the bag200by hand is generally sewn in the upper portion of the bag200, substantially at the center and in the midplane. Each shoulder strap210sewn on either side of the handle211is brought to rest on a distinct shoulder of the individual when the latter carries the bag200on his back. Thus, the bag200is oriented according to a carry axis270which is substantially vertical at the time of carrying. It should be pointed out that the carry axis270is substantially coincident with said plane of symmetry of the bag200.

When installing the carry assist device100on the bag200, the carry sling110runs in the lower portion of the bag200according to the carry axis270proximate to the bottom205of the bag200proximate to the small pocket202. In turn, the stabilizing sling130runs in the middle portion of the bag, proximate to an opening203of the small pocket202, thus leaving free access to the small pocket202.

In order to retain the device100for assisting carrying of the bag200in position, the retaining sling120is advantageously inserted inside the opening215delimited by each shoulder strap210and then closed using the closure buckle125. Thus, the shoulder straps210are free to move.

Advantageously, the retaining sling120is elastic in the present non-limiting example of the invention. Thus, once closed, the retaining sling120forms with the middle portion of the carry sling110a loop, whose circumference is smaller than the circumference of the bag200. Thus, the elasticity of the strap120allows for a degree of freedom in length of the sling120while at the same time conferring a return force pressing the retaining sling120and the middle portion of the carry sling110against the bag200.

In some variants of this particular embodiment of the invention, the retaining sling120comprises a length setting buckle besides the elasticity of the retaining sling120. Such a length setting buckle may also enable a non-elastic retaining sling120to be tightened in order to press the retaining sling120against the bag200.

Thus, whether the retaining sling120is elastic and/or provided with a length setting buckle, the device100fits to different types of backpacks. In general, the device100could be used on backpacks whose perimeter is comprised between forty and two hundred centimeters.

When the carry assist device100is installed on the bag200, the bag200could be carried by the individual who fits each of his arms in an opening215of a distinct shoulder strap210.

When the bag200is positioned on the back of the individual with each shoulder strap210resting on a distinct shoulder of the individual, the carry sling110could be adjusted to the circumference of the hip of the individual thanks to a length setting buckle250installed on the carry sling110. Afterwards, the individual can close the carry sling110thanks to two complementary parts260of a closure buckle of the carry sling110, located substantially at the level of the abdomen of the individual.

The individual could then benefit from the carry assist of the device100which shifts a portion of the weight of the bag from the shoulders to the lumbar and abdominal regions of the individual, and in particular to the pelvis of the individual. Thus, the shoulders of the individual are relieved.

In some variants of this particular embodiment, illustrated inFIG. 3, the carry sling110comprises two length setting buckles250each located proximate to a complementary part260distinct from the closure buckle. Thus, the user can adjust the length of the carry sling110symmetrically without any risk of destabilizing the relative position of the carry assist device100with respect to the bag200.

It should be pointed out that the shoulder straps210of the bag200generally comprise a length setting buckle216. The individual carrying on his back the bag200on which the carry assist device100is installed can adjust the amount of load shifted from the shoulders to the lumbar and abdominal regions by tightening the shoulder straps215more or less by means of the length setting buckles216. Thus, it is possible to rest all the load of the bag200on the lumbar and abdominal regions by loosening the length setting buckles216, which induces an increase in the length of each shoulder strap215. Conversely, when the length setting buckles216are tightened, equivalent to reducing the length of each shoulder strap215, the load carried by the shoulders of the individual increases.

Moreover, the stabilizing sling130allows keeping the bag substantially parallel to the back of the individual, thereby preventing the bag200from tipping backward as the individual moves. Thus, the individual could walk or run without any risk while carrying the bag200with the dorsal carry assist device100.

Advantageously, the stabilizing sling130may be adjustable in length, for example using a tightening buckle, located for example at the junction between the stabilizing sling130and the carry sling110. In this way, the stabilizing sling130could be adapted to different backpacks, having various shapes and therefore requiring adaptability of the stabilizing sling130.

It should be noted that the stitching points150of the carry sling110are in the present non-limiting example of the invention remote from the points121thus improving the stabilization of the bag by reducing the angle280formed between the sling110and the sling130. The angle280is herein in the range of 20°.

It should be pointed out that when the carry assist device100is removed off the bag200, the carry assist device100is compactable in a pocket the dimensions of which are in the range of 10×6 cm. The carry assist device100could then be easily stored in the small pocket202of the bag200.

The carry assist device100could also be hooked to the handle211of the bag200by passing for example a portion of the carry sling110, opened beforehand, inside an opening212delimited by the handle211which is herein formed by a sling, then by closing the carry sling110through the complementary parts260.

Optionally, the carry sling110may include lateral pads310, represented inFIG. 4, which are positioned at the level of the hips in order to contribute to the comfort of carrying the bag200.

In some variants, such pads could also be retained at the level of the back of the individual by the retaining sling120. It should be noted that when a pad is installed on the retaining sling120, this pad, of the dorsal or lumbar type, could rest on the coccyx, thus contributing to assisting carrying of the bag200.

Thus, optionally, the retaining sling120comprises at least one dorsal or lumbar pad320, represented inFIG. 4, intended to be positioned on the lumbar and more generally the bottom of the back of the individual carrying the bag, in order to dampen the impact of the bag against the back, as well as to prevent rubbing of the bag against the back.

Preferably, such a dorsal or lumbar pad320is inflatable, so as to limit bulk when the lumbar pad is not in use. In an inflated state, the lumbar pad320has a thickness comprised between 2 to 4 centimeters, corresponding to the distance separating the bag from the back of the individual carrying the bag in this inflated state.

Thus, the lumbar pad320also allows for a better circulation of air in comparison with a retaining sling120without a lumbar pad.

In order to improve the circulation of air between the bag and the back of the individual carrying the bag, the lumbar pad320may be structured. For example, such a structure consists of a series of reliefs or crenellations.

It is provided for the lumbar pad320being able to be secured to the retaining sling120either permanently or removably, for example by being slipped over the retaining sling120using loops.

Another Exemplary Embodiment

FIG. 5is a schematic view of a dorsal carry assist device400according to the invention.

In the present non-limiting example of the invention, the dorsal carry assist device400comprises a carry sling410intended to clasp a portion of a bag including a pair of shoulder straps (not represented inFIG. 5), and a sling420for retaining the carry sling410to the bag.

Advantageously, the carry sling410herein comprises a central section430allowing stabilizing the bag during dorsal carrying. The central section430has a larger width than the rest of the carry sling410.

In some variants of this particular embodiment of the invention, the width of the carry sling410is constant all over the sling, thus reducing the stabilization of the carried bag.

The sling410also comprises opening and closure means450so that the sling410could be clasped around the waist or the hips of an individual.

The retaining sling420comprises two strands422each including at one of their ends complementary parts425allowing quick opening and closure of the sling420, and a length setting buckle426in order to adjust the size of the sling420to the dimensions of the bag.

When the carry assist device400is installed on the bag itself carried by an individual, carrying of the bag is stabilized thanks to the central section430of the carry sling410which is wider than the rest of the sling410.