Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
  • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
  • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
  • A45C13/00—Details; Accessories
  • A45C13/30—Straps; Bands
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
  • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
  • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
  • A45F3/047—Sacks or packs carried on the body by means of two straps passing over the two shoulders with adjustable fastenings for the shoulder straps or waist belts
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
  • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
  • A45F3/12—Shoulder-pads
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
  • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
  • A45F3/14—Carrying-straps; Pack-carrying harnesses
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
  • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
  • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
  • A45F2003/045—Sacks or packs carried on the body by means of two straps passing over the two shoulders and one additional strap around the waist
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
  • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
  • A45F3/14—Carrying-straps; Pack-carrying harnesses
  • A45F2003/142—Carrying-straps

Definitions

• the object of the invention is a carrying strap equipped with a frame of
• a load carried in a bag is transmitted to the wearer's back by shoulder straps which pass over the shoulders of said wearer. If the load is heavy, the weight of the bag is mainly transferred to the hips (in the case where a lap belt is fitted to the bag) and to the shoulders of the wearer, who may feel excessive and uncomfortable pressure at this level of the body. . In addition, carrying a load causes postural compensations, and the continued and regular maintenance of poor posture can lead to musculoskeletal imbalances and pain. Many solutions have been proposed to reduce this uncomfortable distribution of the load on the shoulders of the wearer.
• Patent documents EP2371232 (ADIDAS) or FR2781135 (ROSSIGNOL) describe for example a bag comprising a pair of shoulder straps. A portion of the upper part of each strap is constituted by an elastic part limited in elongation. This elastic part aims to decouple the backpack from its wearer for on the one hand to improve comfort by allowing the wearer to feel less on his shoulders movements, generally sudden, when practicing sport or when moving said wearer. .
• shoulder strap of a bag which has an elongated synthetic foam element comprising one or more sheets of relatively rigid plastic material mounted on its face remote from the body of the wearer.
• the shoulder pad contains a plurality of elongated strips of relatively stiff plastic material disposed side by side along the length of the foam member, separated by spacings.
• Patent document EP2606763 (WOOHYUNG) describes a shoulder strap for carrying a bag comprising a part which can be inflated with air. This air cushion not only reduces the effect of pressure on the wearer's shoulder, but also, by coming into close contact with the shoulder, prevents the bag from slipping or shifting sideways.
• This additional organ is composed of articulated segments.
• the patent document FR3052650 (ERRAFI) describes a bag comprising a right carrying strap and a left carrying strap adapted, in use, to be installed respectively at the level of the right shoulder and the left shoulder of a carrier.
• a stiffening frame equips each of the shoulder straps portage, this frame having an upper portion curved into a hook which is extended downwards by a longitudinal portion.
• the frame is made of a material having elastic properties, so that said frame deforms elastically with a spring effect when the bag is installed on the shoulders of the wearer.
• the upper curved hook portion is located, in use, at the level of the shoulder on which is installed the carrying strap equipped with the stiffening frame.
• the longitudinal portion has a segment which is twisted around the longitudinal axis of said portion
• the carrying strap equipped with the stiffening frame is pressed against a region of the wearer's trunk other than the shoulder on which said strap is installed, said strap pressing against the lateral part of the torso, at the level of the sides, in the region of the hypochondrium and / or of the lateral sides of the wearer so that all or part of the load of said bag is distributed at the level of this support.
• the frame described in this patent document forms a load distribution accessory which makes it possible to no longer carry all or part of the weight of the bag on the wearer's shoulder and collarbone.
• the weight of the bag is now shifted, at least in part, to a support zone which can be used more than the shoulders, with an acceptable level of comfort for the wearer.
• the bag then appears lighter for the wearer to wear.
• This reinforcement although effective, may however cause some discomfort for the wearer due to the shape of the longitudinal portion.
• the patent document JP3215380U describes a carrying strap which is twisted on itself. This twist is such that the inner surface of the sling which is in contact with the user's shoulder becomes the outer surf after the twist. And conversely for the outer surface of the sling which becomes the inner surface in contact with the wearer after the twist.
• the strap therefore does not have the same internal surface and the same external surface. This conformation aims to modify the direction of the tension in the sling.
• the twist is locally located at the level of the user's chest, it must provide particularly uncomfortable discomfort for the wearer.
• An objective of the invention is to remedy this state of affairs.
• Another object of the invention is to improve the comfort of the wearer in an efficient and inexpensive manner.
• An additional objective of the invention is to provide a carrying strap with which the weight of the load is better distributed over the body of the wearer.
• Yet another additional objective of the invention is to provide a solution for shifting all or part of the weight of the bag from the shoulders of the wearer, which is simple, compact and inexpensive.
• Yet another additional objective of the invention is to provide a solution making it possible to limit the musculoskeletal disorders induced by carrying a load.
• the solution proposed by the invention is a carrying strap adapted, in use, to be installed at the level of a wearer's shoulder, in which:
• the carrying strap comprises a conformation frame having the same internal surface and the same external surface
• the front frame portion includes a shaped support portion so that, in use, the carrying strap comes to rest against a support surface of the wearer
• the internal surface of the frame has the shape of a portion of Moebius tape, which internal surface is, in use, oriented towards the body of the wearer.
• the upper frame portion has a first free end; - the front frame portion has a second free end; - the internal surface of the reinforcement has the shape of a portion of Moebius tape from the first free end to the second free end so that said internal surface is twisted not only along the entire portion of the reinforcement front, but also along the entire portion of the upper frame.
• the external surface of the frame has the same shape as the internal surface of said frame.
• the trajectory describes a plane curve.
• the trajectory can then describe a portion of a circle, or a portion of an ellipse, or a portion of a logarithmic curve, or a portion of a hyperbola or an arch portion of a cycloid curve.
• the trajectory describes a left curve.
• the trajectory can then describe a portion of a helix, or a portion of a rational sextic, or a portion of a non-rational sextic.
• the following characteristics also geometrically define the shape of the internal surface of the reinforcement: the angular speed of rotation of the segment, when its midpoint moves along the path, is uniform and not zero along of the trajectory.
• the angular speed of rotation of the segment when its middle moves along the trajectory, is variable and not zero along said trajectory.
• the length of the segment is constant along the path.
• the length of the segment varies along the path.
• the front frame portion has a free end having a flared shape.
• the upper frame portion has a free end curved upwards.
• a rear frame portion also extends the upper frame portion, which rear frame portion is adapted to extend, in use, down the trunk of the wearer, from the face backbone of said wearer; - the rear frame portion comprises a support portion shaped so that, in use, the carrying strap comes to bear against a rear support surface of the wearer located in a dorsal region of the wearer or at the level of a sidewall side of said carrier.
• Another aspect of the invention relates to a load carrying equipment on the human body, comprising a left carrying strap and a right carrying strap, each of said straps conforming to one of the preceding characteristics.
• Yet another aspect of the invention relates to equipment for carrying loads on the human body, comprising a single carrying strap, said strap conforming to one of the preceding characteristics.
• a further aspect of the invention relates to a method of manufacturing a carrying sling conforming to one of the preceding characteristics, comprising the steps of: - shaping the conformation reinforcement so that the portion of front frame extends down the trunk of a wearer, from the ventral face of said wearer and whether the bearing portion is located on a front face or on a side face of the thorax or abdomen of said wearer; - equip the carrying strap with the conformation frame.
• FIG. 1 a view of a bag according to the invention, the bag being worn by an individual seen from the front,
• FIG. 2a is a right side view of a frame of a carrying strap according to the invention.
• FIG. 2b is a left side view of the frame of Figure 2a
• FIG. 2c is a front view of the frame of Figures 2a and 2b,
• FIG. 3 shows cross sections of a frame of a carrying strap according to the invention, according to different embodiments
• FIG. 4 is a perspective view of part of the carrying strap according to one embodiment of the invention, cut transversely,
• FIG. 5 is a perspective view of part of the carrying strap according to another embodiment of the invention, cut transversely,
• FIG. 7 represents a backpack worn by an individual seen in profile, comprising carrying straps according to the invention
• FIG. 8 illustrates one way in which the internal surface of the reinforcement is generated.
• FIG. 9 represents the trajectories of the middle of a segment generating the internal surface of the reinforcement, according to different embodiments,
• FIG. 10 represents other trajectories of the middle of a segment generating the internal surface of the reinforcement, according to different embodiments,
• FIG. 11 is a front perspective view of a frame of a carrying strap according to the invention, in an alternative embodiment
• FIG. 12 is a rear perspective view of a frame of a carrying strap according to the invention, in another variant embodiment
• the invention relates to a carrying strap particularly suitable for
• “Load carrying equipment” means any type of accessory fitted with one or more carrying straps and which is worn by the human body. It can be a travel bag, sports bag, golf bag, hiking bag, military or fire bag, school bag, a baby carrier, a protective vest (bulletproof vest, deminer's clothing), etc. In general, this bag is intended to carry a load: clothing, notebooks, equipment including military equipment, oxygen cylinder, fire hose, books, sports accessories, baby, etc.
• FIG. 1 shows equipment 1 of the backpack type.
• This bag 1 is of a classic design. It comprises in particular an internal cavity for receiving the load to be carried. It has a rear face which, in use (that is to say when the bag 1 is worn), is in contact with the back of the wearer 2.
• the bag 1 comprises a pair of carrying straps, respectively a right strap 8a and a left strap 8b which are similar.
• the bag 1 may however have only one carrying strap, in which case said bag is said to be single-strap.
• the right shoulder strap 8a passes at the level of the right shoulder 12 of the wearer 2 and the left shoulder strap 8b passes at the level of his left shoulder 15.
• the straps 8a, 8b are generally flat. Their width is for example between 10 mm and 100 mm.
• Each carrying strap 8a, 8b here comprises an adjustment strap
• the backpack 1 of FIG. 1 further comprises a chest strap comprising a straight strap part 9, which extends from the right carrying strap 8a, and a part of the left strap 10, which extends from the left shoulder strap 8b.
• This chest strap allows a better adjustment of the position of the bag 1 and of the position of the straps 8a, 8b according to the anatomy and the morphology of the wearer 2.
• An upper end of each carrying strap 8a, 8b is fixed (for example by stitching) to the upper part of the dorsal face of the bag 1.
• the adjustment strap is also fixed (for example by sewing) to the lower part of the dorsal face of the bag 1.
• the straps 8a and 8b are flexible, that is to say easily deformable, manually. These reinforcements make it possible to conform the straps, and stiffen them. Also, the straps 11 a and 11 b are more rigid - or less flexible - with the reinforcements than without these reinforcements, and / or said reinforcements impart their shape to said suspenders.
• FIG. 2a and 2b An armature 3 is shown in Figures 2a and 2b.
• the frame fitted to the right shoulder strap 8a is identical to the frame fitted to the left shoulder strap 8b.
• the right and left reinforcements can however be distinct according to the strap it equips and / or according to the type of bag to be fitted and / or according to the anatomy and / or the morphology of the wearer 2.
• the reinforcements 3 are thin, that is to say that their cross section has a width ⁇ "which is greater than their thickness" e "( Figure 3).
• the width ⁇ ” is between 5 mm and 80 mm and the thickness“ e ”between 0.5 mm and 20 mm.
• the thin nature of the reinforcements 3 gives them lightness, flexibility and elasticity.
• the length unwinding of the frame 2 (length between the ends 300-310) is for example between 100 mm and 1 m. This length depends on the anatomy and / or the morphology of the wearer, the latter possibly being a child schoolboy, a teenager, an adult, and a man or a woman. Of course, this length also depends on the size of the strap 8a, 8b which is itself adapted to the size of the bag 1, but also on the morphology of the individual 2.
• the frame 3 is in the form of a flat blade, rectangular cross section 23.
• the frame 3 may however have another cross section , in particular a plano-convex section 26, the planar surface extending on the side of the interior of the bag 1, that is to say as close as possible to the front face of the thorax 13 and / or the abdomen 14 of the individual 2 when the latter carries said bag, the convex surface extending from the side of the exterior of said bag; a concave or curved section 27 slightly curved so as to match more closely the morphology of the wearer 2; an oval or convex-convex section 29; a section having longitudinal ribs 43 so that said section has teeth 45 making it possible to stiffen said reinforcement.
• a square cross section can also be considered, the frame 3 not being considered thin in this case.
• the reinforcement 3 has elastic properties allowing it to deform elastically, in a reversible manner. This elasticity allows the reinforcements 3 to follow the curvature of the straps 8a, 8b as well as that of the trunk of the wearer 2 as well as possible, with a spring effect, as explained in detail later in the description.
• the reinforcements 3 can be obtained by molding or machining. They are for example made of: plastic such as PVC or urethane polymer (polyurethane); - in metal such as stainless steel, aluminum alloy, copper alloy, brass alloy; - in composite material such as glass fibers or carbon fibers mixed with a thermoplastic or thermosetting resin; raw wood, laminated wood, glued laminated wood; - etc. Any other material suitable for those skilled in the art can be used.
• the frame 3 can also be formed from several materials, comprising for example a core made of a metallic material, which core is coated with silicone or another flexible plastic material providing electrical insulation in addition to increased comfort.
• the frame 3 has an internal surface - or wall - Si and an external surface - or wall - Se.
• the internal surface Si is the surface of the frame 3 which, in use, is oriented towards the body of the wearer 2.
• the external surface Se is the other surface of the frame 3 which is opposite the internal surface Si.
• C ' is the same internal surface Si which is oriented towards the body of the wearer 2, all along the frame 3, unlike the document
• JP3215380U cited above. Indeed, in this document JP3215380U, after the twist of the strap, the internal surface becomes the external surface and the external surface becomes the internal surface.
• the frame 3 has an upper portion 30 which is located, in use, at the level of the shoulder 12, 15 on which is installed the carrying strap 8a, 8b equipped with the respective frame 3. This upper portion 30 is
• the carrying strap 8a, 8b extends to the above his shoulder 12, 15.
• the upper portion 30 has a free end 300 (or upper free end).
• This upper portion 30 is extended downwards by a portion
• front reinforcement 31 These two portions 30, 31 here form a single and the same part, without discontinuity. All or part of the front frame portion 31 is installed in the carrying strap 8a, 8b. It extends, in use, down the trunk of the wearer 2, from the ventral face of said wearer regardless of the anatomy and / or morphology of said wearer. In FIG. 1, the front frame portion 21 extends along the length of the carrying strap 8a, 8b, to the lower end 80a, 80b of said strap. In one embodiment, the lower end 310 of the front frame portion 31 (that is to say its lower free end) does not reach the lower end 80a, 80b of the strap 8a, 8b, the length of the frame 3 being shorter than the length of said strap.
• a frame 3 When a frame 3 is associated with a strap 8a, 8b, the latter takes the form of said frame.
• the frame 3 therefore makes it possible to conform the strap 8a, 8b.
• This property is used, in the context of the invention, to create new points or areas of support for said strap in a region of the body of the wearer 2 other than the shoulders 12, 15.
• the front frame portion 31 comprises a bearing portion 32 shaped so that, in use, the strap 8a, 8b comes to bear against a bearing surface 24 of the wearer 2 ( visible in figure 1).
• the bearing portion 32 is located on the inner surface Si of the frame 3 and comes to bear, flat, directly or via a protective layer of the strap 8a, 8b, against the bearing surface 24.
• the frame 3 is shaped so that the bearing surface 24 is located on the front face of the thorax 13 or of the abdomen 14 of the wearer 2. The conformation of the frame 3 can therefore be adjusted, at the time of its
• the bearing surface 24 is located at the level of the pectorals of the individual 2, this position giving very good results in terms of terms of wearer comfort 2 and reduction in the feeling of the weight of the load carried. It is also possible to provide for shaping the frame 3 so that the bearing portion 32 acts on a bearing zone 24 situated on a lateral face 16, 17 of the thorax 13 or of the abdomen 14.
• the internal surface Si of the reinforcement 3 is geometrically generated by the non-zero rotation and in the same direction, of a segment around its middle (which is the center segment rotation), which midpoint follows a path describing a curve.
• the internal surface Si can thus have the shape of a portion of Moebius strip.
• Figure 8 illustrates, from a geometric point of view, how the internal surface Si is generated.
• the length of the segment AB corresponds to the width of the internal surface Si (and of the reinforcement 3).
• the middle of the segment AB is denoted M.
• the trajectory of the middle M is denoted T and describes a curve.
• the trajectory T defines the longitudinal axis of the reinforcement 3.
• the trajectory T is delimited by the point T0 (which corresponds to the upper free end 300 of the reinforcement 3) and the point T1 (which corresponds to the end lower free 310 of the frame 3).
• the segment AB is here a straight segment, but can be a curve segment, in particular to obtain a non-flat internal surface (concave, convex, etc.) as illustrated in the variants of Figure 3.
• the trajectory T of figure 8 describes a 2-dimensional curve - 2D curve or plane curve - contained in the xOy plane of the orthonormal coordinate system (O, Ox, Oy, Oz).
• the trajectory can describe a portion of a circle Ta, a portion of an ellipse Tb, a portion of a logarithmic curve Te, a portion of a hyperbola Td, an arch portion of a cycloid curve Te , or any other curve approaching them without strictly respecting their mathematical equation.
• This type of curve makes it possible to obtain very good results in terms of comfort and reduction of the feeling of the weight of the load carried.
• the trajectory T can however be a curve drawn in a space of 3
• the trajectory can describe a portion of helix Tf, a portion of rational sextic Tg, a portion of non-rational sextic Th, or any other curve approaching these without strictly respecting their mathematical equation .
• This type of curve also makes it possible to obtain excellent results in terms of comfort and reduction of the feeling of the weight of the load carried.
• the midpoint M moves on the trajectory T, between the point To and the point T 1. Between these two points TO and T1, the segment AB pivots continuously around its midpoint M. This rotation is non-zero and in the same direction along said trajectory T.
• the internal surface Si is thus twisted - or undergoes a torsional movement - not only along the entire portion of the front reinforcement 31, but also along the entire upper frame portion 30.
• the frame 3 therefore has no straight portion.
• the angle formed by the segment AB with the horizontal direction (xOy plane) is denoted “ai”.
• aq 90 °
• T1 a1 45 °.
• the angle a 1 can describe an angular sector of 90 °, advantageously 45 °, preferentially 60 °.
• the rotational speed of the segment AB is not zero and can be constant (uniform or equal rotational angular speed along the path T) or inconstant (variable or different angular rotational speed along the T path).
• the choice of this speed of rotation makes it possible to best adapt to the morphology of the carrier 2 and / or to very precisely adjust the location of the bearing portion 32.
• the length of the segment AB (which corresponds to to the width of the reinforcement 3) can be constant or vary along the path T, between points T0 and T1.
• the lower free end 310 of the frame 3 may have a flared shape, in the form of a crow's feet or a spatula. This flared shape makes it possible to further maximize the surface of the bearing portion 32 at the level of the bearing zone 24.
• the same flared shape can be provided at the level of the upper free end 300.
• the upper free end 300 of the upper frame portion 30 is curved upward.
• the upper end of the strap 8a, 8b is raised upwards, which prevents it from pressing against the trapezoids of the wearer 2. The comfort of the wearer 2 is therefore increased.
• the external surface Se is not intended to come directly into contact with the body of the wearer 2, it can be envisaged that it is not the same shape as the internal surface Si.
• the external surface Se can be
• the shape of the frame 3 enables the support portion 32 to be oriented very precisely parallel to the support zone 24 of the wearer 2.
• the frame 3 will impart a torsional movement to the strap 8a, 8b so that the latter follows at best the curvature of the trunk of the wearer 2 and at the same time as the bearing portion 32 reaches a target bearing zone 24.
• This support zone 24 may vary according to the type of bag or load carrying equipment and / or according to the morphology, size, type and / or sex of the wearer 2.
• the specific shape of the carrier may vary according to the type of bag or load carrying equipment and / or according to the morphology, size, type and / or sex of the wearer 2.
• the internal surface Si of the frame 3 (and more generally the specific shape of said frame), makes it possible to shift the straps 8a, 8b forward and / or upwards of the collarbones and / or shoulders 12, 15 of the carrier 2.
• the elimination of this support reduces the postural compensations in static of the wearer and therefore the muscular activity necessary for this maintenance.
• the release of the shoulders allows for a more physiological swing of the arms during walking.
• the shoulders 12, 15 are therefore the main support zones of the straps 8a, 8b, the major part of the weight of the load being taken up at said shoulders.
• the shape of the frame 3 makes it possible to orient the bearing portion 32 very precisely, towards a target bearing zone 24, and
• each strap 8a, 8b comes to bear against the bearing surface 24 of the carrier 2, so as to apply against said bearing surface at least part (or even all) of the load of the bag 1 and of the object or objects transported therein.
• the load is therefore deported onto the support surface 24 which can be stressed more than the shoulders 12, 15 without this causing discomfort.
• Backpack 1 looks much lighter. It has been observed that, when a bag 1 comprising carrying straps 8a, 8b according to the invention is used, the load to be carried can be increased from 10% to 80% without significant perception for the wearer 2. In d ' In other words, for the same load, the backpack 1 appears much lighter for the individual wearing it.
• the straps 8 equipped with the reinforcements 3, make it possible to grip the trunk of the wearer 2 at the level of two support zones: the first support zone located on one side front or on a lateral face of the thorax 13 or of the abdomen 14 of said wearer (support surface 24), and a second support zone 25 located in the back of the wearer 2 (contact zones (s) between the bag 1 and back).
• the frames 3 act as jaws by deforming elastically, with a spring effect, to enclose, without injuring him, the trunk of the wearer 2.
• All or part of the weight load is then deported and distributed at the level of these two support zones 24, 25, relieving the shoulders 12, 15 and / or the collarbones and / or the trapezoids of the wearer 2, of all or part of the weight they initially supported without the use of the straps 8 fitted with the frames 3.
• the deformation of the frames 3 is induced by the weight of the bag 1 when the latter is carried by the wearer 2. In other words, it is mainly when the bag 1 is carried by the carrier 2 that the frames 3 are deformed to be put in place and press at the level of the support zone 24.
• the carrying strap 8a, 8b extends or comes to bear "against" the trunk of the carrier 2 (bearing surface 24), it is of course meant against the carrier. trunk or against a garment covering the trunk.
• the carrying strap 8a, 8b does not rest on a shoulder 12, 15, this means that it could be in contact, at the level of the shoulder, with a garment of the wearer 2.
• the strap 8 comprises a protective layer 80 comprising a quilted or padding layer 81, for example a layer of elastomeric foam, covered by an outer layer 82 made for example of fabric, plastic, leather, etc.
• the carrying strap 8 here has a substantially rectangular section.
• the cavity 83 which extends in the length of the strap 8.
• the cavity 83 has a substantially rectangular section (and is therefore intended to accommodate a frame 3 of rectangular section).
• the cavity 83 and the protective layer 80 form a sheath having an opening positioned near an upper end or a lower end of the strap 8.
• the frame 3 is inserted in a removable manner in this sheath, at the level of 'an opening (or slot) made in the strap 8 and opening out on the one hand at the level of the protective layer 80 and on the other hand in the cavity 83.
• the frame 3 can thus be inserted or else removed from the strap 8.
• the strap 8 becomes a conventional strap again and, if the frames 3 of the two straps 8a, 8b are removed, the bag 1 becomes a classic backpack again.
• rectangular cavity 33 are preferably slightly greater than those of the rectangular section of the frame 3 to facilitate the insertion or removal thereof.
• the frame 3 is arranged not inside, but on the protective layer 80.
• the frame 3 is fixed on the protective layer 80 by loops 87 distributed over the long of the strap 8 and which are for example sewn or welded to said strap, on either side of the frame 3.
• Stop pieces 88 are formed on the strap 8 to accommodate and maintain in position each end of the The frame 3.
• the frame 3 could be fixed by different fixing means: loops, loop bands, hooks of the Velcro® type, and the like.
• the frame 3 comes here to cover the strap 8. It covers more particularly the outer layer 82, and is placed on the outer face of the strap 8, that is to say the face which is not in contact. with the body of the wearer 2. It can however be envisaged that the frame 3 is placed on the internal face of the strap 8, that is to say the face which is in contact with the body of the wearer 2.
• the strap 8 has a plano-convex section.
• the strap 8 comprises a protective layer 80 whose outer shape also has a plano-convex section.
• Within the protective layer 81 is defined a cavity of rectangular cross section which extends along the length of the strap 8.
• the cavity and the protective layer 80 again form a sheath having an opening positioned close to it. an upper end or a lower end of the strap 8.
• the frame 3 has a rectangular section.
• the frame 3 is positioned inside the sheath, removably or not.
• the frame 3 can be glued to the protective layer 80.
• the protective layer 80 may also have been molded on the frame 3 at the time of manufacture of the strap 8, said frame forming the core of said strap.
• the thickness of the protective layer 80 between the flat surface of said layer and the frame 3 is very low.
• the upper frame portion 30 can be extended by a rear frame portion, which rear frame portion extends, in use, down the trunk of the wearer 2, from the dorsal face of said wearer.
• the frame 3 has in this case an arch or iron shape. on horseback, comprising a front branch (front frame portion 31), a rear branch (rear frame portion) and an upper portion 30.
• the upper portion 30 includes an upper part of the front branch and an upper part of the leg. the rear branch.
• the front and rear branches can be of the same length or of different lengths.
• this rear frame portion comprises a rear support portion shaped so that, in use, the carrying strap 8a, 8b, (or directly said rear frame portion ) comes to bear against a rear bearing surface of the wearer 2 located in a dorsal region of the wearer (back, lumbar) or at the level of a lateral flank of said wearer.
• the frame 3 thus has two distinct support portions.
• the inner surface Si of the frame 3 (and possibly its outer surface Se) can also be generated by the continuous rotation of a segment around its middle, which center has a trajectory T describing a curve.
• the rear frame portion is then twisted.
• the front and rear frame portions are not twisted in the same direction, so as to optimize the downforce at the front bearing surface level and at the rear bearing surface.
• the rear frame portion may also not be twisted.
• Such a frame 3 with two branches makes it possible to enclose the trunk of the wearer 2 at the level of two support zones: a first ventral region where the front frame portion supports and a second dorsal region where the dorsal portion supports. rear frame. These two support zones are located on the same side of the trunk (to the right or to the left of the sagittal plane of wearer 2).
• the front frame portion and the rear frame portion of each frame move apart at the level of the body of the wearer 2 and act as jaws by deforming elastically, with a spring effect, to enclose, without injuring it, said trunk.
• a pinch effect (to the right, to the left or diagonally of the trunk) can also be obtained with a single frame 3 with two branches, which makes it possible to equip a single-strap bag.
• the cross section of the upper frame portion 30 may be different from that of the front frame portion 31.
• the cross section of the front frame portion 31 may in particular be wider than that of the frame portion upper 30 so as to increase the surface of the bearing portion 32.
• the reinforcement 3 may possibly have a straight portion whose length is negligible compared to the total length of said reinforcement ( ⁇ 5% of the total length).
• one or more features disclosed only in one embodiment may be combined with one or more other features disclosed only in another embodiment.
• one or more characteristics exposed only in one embodiment can be generalized to the other embodiments, even if this or these characteristics are described only in combination with other characteristics.

Landscapes

• Portable Outdoor Equipment (AREA)
• Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2019
  • 2019-06-03 FR FR1905872A patent/FR3096561B1/fr active Active
  • 2019-09-25 CN CN201910914013.2A patent/CN112021765A/zh active Pending
• 2020
  • 2020-06-01 CA CA3147214A patent/CA3147214A1/fr active Pending
  • 2020-06-01 WO PCT/FR2020/050929 patent/WO2020245530A1/fr unknown
  • 2020-06-01 US US17/615,783 patent/US20220232953A1/en active Pending
  • 2020-06-01 EP EP20740363.5A patent/EP3975793A1/de active Pending
  • 2020-06-01 AU AU2020288345A patent/AU2020288345A1/en active Pending
  • 2020-06-01 CN CN202080038648.1A patent/CN113891667A/zh active Pending

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