Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
  • A43B7/144—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the heel, i.e. the calcaneus bone
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
  • A43B13/16—Pieced soles
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
  • A43B13/41—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process combined with heel stiffener, toe stiffener, or shank stiffener

Definitions

• the field of the invention is that of shoes, especially used for the practice of physical activity, and in particular for the practice of sport whether urban or outdoor
• Sports activities such as walking, sports walking, and running are activities practiced regularly, even daily, for some people. This activity causes repeated impacts on the feet, impacts which are transmitted to the joints of the upper floors and which are known to promote short, medium or long term the appearance of Musculoskeletal T rubles (MSD).
• MSD Musculoskeletal T rubles
• MSDs can range from simple pain to debilitating injuries such as fatigue fractures, severe cartilage wear or tendonitis, which force the person to decrease, or in some cases, stop practicing. These disorders can be treated, but lead to recurrences in the majority of cases
• the shoes constitute the main equipment of the sportsman (walking and running), are more and more specific to a practice and a sport. They must meet certain needs related to the sporting activity, in particular in terms of grip, type of impact and expected movements. So, for example, manufacturers prefer a more cushioning sole for a running shoe on hard ground, or a stiffer sole and a wrapped foot for a hiking shoe on soft ground.
• the invention aims to provide a sports shoe comprising a rod, a first mounting and a sole, the first mounting being secured to the sole, extending in a longitudinal direction and having a part anterior capable of receiving the forefoot, a central portion capable of receiving the midfoot and a posterior portion; said sports shoe being characterized in that the rear part and the central part of the first fitting are made of a rigid material and in that the sports shoe comprises a damping element positioned at the level of the rear part of the first mounting, said cushioning element being capable of cushioning and receiving the heel
• thermoplastic or thermosetting material is a hard material according to the definition given by the invention
• soft material a material having a hardness equal to or less than 50 Shore A
• an elastomeric material, a silicone or an EVA type foam is a soft material according to the definition given by the invention.
• the shoe according to the invention goes against the teaching of the state of the art which recommends for the production of a first assembly, the use of flexible and comfortable materials, such as by example leather. A flexible and comfortable fitting first is often seen as a guarantee of quality and solidity of the shoe
• the sports shoe according to the invention may have one or more additional characteristics from the following, considered individually or in all technically possible combinations:
• the rear part and the central part of the first assembly are made of a material having a hardness equal to or greater than 20 Shore D;
• the rear part and the central part of the first mounting are made of a thermoplastic or thermosetting material
• the damping element is made of a more flexible material than the rigid material of the central part and the rear part of the first assembly;
• the damping element is made of a material having a hardness less than or equal to 50 Shore A;
• the shock absorbing element has a thickness of between 1 and 25 mm forming a posterior elevation of the heel relative to the forefoot;
• the central part of the first assembly has an upper profile and a lower profile which are curved, so that the central part forms an arch extending between the rear part and the front part of the first assembly;
• the central part of the first mounting has a curved upper profile configured to follow the shape of the arch of the foot; - The central part of the first assembly has damping and rebound properties;
• the front part of the first assembly is formed by a textile material or a piece of leather or a cardboard material;
• the front part of the first assembly has at least one groove or cut creating a primer to promote folding of the front part;
• At least one groove or cut is formed in a flexion zone dimensioned and oriented so as to correspond to a contact zone receiving all of the metatarsal heads of the foot;
• the sole has a front part, a central part and a rear part, said sole comprising at the level of the front part a preferred flexion zone extending in an oblique direction relative to the longitudinal direction of the sports shoe;
• Said preferred flexion zone provided at the level of the sole is dimensioned and oriented so as to be located in projection of the metatarsophalangeal heads of the foot.
• shoe according to the invention may also have one or more of the following additional characteristics, considered individually or in any technically possible combination:
• the sole comprises at the front part a plurality of preferred flexion zones extending in an oblique direction relative to the main axis of the foot (P);
• Said sole has, at the privileged flexion zone, a lower hardness of at least 10% compared to the rest of said sole;
• said preferred flexion zone has a height, extending in the longitudinal direction (L), between 3 and 40 mm;
• - Said preferred flexion zone is oriented along a main bending fold axis (F), itself oriented at an angle of 105 ° ⁇ 15 ° relative to the main axis of the foot (P);
• - Said sole has, at the preferred bending zone, at least one groove oriented along the main bending fold axis (F);
• Said sole is made of a first material and has, at the preferred flexion zone, an inclusion of a second material of the same kind and having a density less than the density of the first material used for the rest of the sole;
• the second material has a density at least 10% lower than the density of the first material
• said sole is made of a first material and has, at the preferred flexion zone, an inclusion of a second material of a different nature and having a hardness less than the hardness of the first material used for the rest of the sole;
• the second material has a hardness at least 10% lower than the hardness of the first material
• Said preferred flexion zone is located at a distance of between 60 and 75% of the total length of the sole from its rear end;
• said preferred flexion zone extends over part or the entire width of the sole
• Said sole has an extra thick strip located at the edge of said preferred flexion zone or at two edges of said preferred flexion zone;
• - Said oversized strip is oriented along the main bending fold axis (F), itself oriented at an angle of 105 ° ⁇ 15 ° relative to the main axis of the foot (P);
• - Said sole is a flexible sole based on elastomer or a rigid sole based on thermoplastic materials; - Said sole has an outsole intended to come into contact with the ground and an intermediate sole, said preferred flexion zone extending in an oblique direction relative to the main axis of the foot (P) being formed at said level outsole
• the shoe is a walking shoe, a running shoe, a sports shoe, a football shoe or a rugby shoe
• Figure 1 schematically illustrates an exploded view of a first embodiment of a sports shoe according to the invention
• FIG. 2 illustrates a perspective view of a first embodiment of a first assembly according to the invention
• FIG. 3 illustrates an exemplary embodiment of a damping element according to the invention
• Figure 4 illustrates a bottom view of a second embodiment of a first assembly according to the invention
• FIG. 5 shows a projection on the foot of the flexion zone formed at the first mounting illustrated in Figure 4;
• Figure 6 schematically illustrates an exploded view of a second embodiment of a sports shoe according to the invention
• FIG. 1 schematically illustrates an exploded view of a first embodiment of a sports shoe according to the invention
• the term “median plane” is understood to mean the plane which separates the left half from the right half of the body.
• sagittal plane is meant a plane parallel to the median plane.
• transverse plane is meant a horizontal plane and therefore perpendicular to the median plane and which separates the body into a cranial part and a caudal part.
• frontal (or coronal) plane is meant a plane perpendicular to the median plane and to the transverse plane and which separates the body into an anterior (ventral) part and a posterior (dorsal) part.
• the sports shoe 100 comprises a rod 20 defining a housing for receiving a foot (not shown)
• the rod 20 is closed in the lower part by a first mounting 30 ("mounting insole” in English) so as to form an entire volume to receive the foot
• the sports shoe 100 also includes a sole 10 on which the first mounting 30 is secured.
• the first mounting 30 is for example sewn, glued, heat-sealed, hot welded to the upper part of the sole 10.
• the sole 10 conventionally extends from the front to the rear of the shoe 100 along a longitudinal axis (L) which corresponds to the main axis of the foot (P).
• main axis of the foot (P), or static axis of the foot the axis which passes through the middle of the heel and through the middle of the second toe
• the sports shoe 100 is a walking shoe or a running shoe with a relatively flexible sole 10 formed from materials known from the state of the technique in the field of walking or running shoes. These materials are, for example, foamy materials and / or elastomeric materials which are known to be soft materials (as opposed to hard materials of the thermoplastic or thermosetting type) having damping characteristics, and which are easily deformable at the touch of a finger.
• the sole 10 constitutes the base of the sports shoe 100 and is intended to be in contact with the ground.
• the sole 10 conventionally extends from the front to the rear of the shoe 100.
• the shoe 100, and more particularly the sole 10 has three separate parts, each fulfilling a role in maintaining and positioning the foot in the shoe 100:
• a second part 13 located at the rear of the shoe allowing the support of the heel hereinafter called the rear part 13, and;
• central part 14 a third part 14 situated between the two others providing support for the midfoot, hereinafter called the central part 14.
• Each of the parts 12, 13, 14 is defined and dimensioned in order to form an overall plantar profile providing support for the foot as enveloping as possible and as close as possible to the planar profile of the foot, thus preserving the anatomical and biomechanical balance. of the sportsman.
• the sole 10 is composed by the association of several layers and / or materials having different properties (for example of hardness, damping, etc.) which can be located locally in different places.
• an outsole called an outsole, ("outsole” in English) intended to be in contact with the ground.
• the midsole is for example made of EVA foam (s) and / or TPU foam (s) whose densities and hardnesses can vary as required.
• This midsole may also include structuring reinforcements located opposite the internal arch of the foot or even localized from the heel to the forefoot.
• the architecture according to the invention advantageously makes it possible to dispense with the use of structural reinforcements located in the midsole by the present of a first structuring assembly.
• the outer sole is for example formed by one or more layers of elements from the following list: polyurethane; elastic thermoplastic polyurethane, rubber.
• the outsole is advantageously textured and can have means favoring grip on a particular terrain such as for example sculptures, flexible spikes whose shape and geometry can vary depending on the program of use of the sports shoe 100. defines by crampon, an element, generally a more or less flexible protuberance, lining the outer sole of sports shoes to ensure better grip on the ground depending on the nature of the ground.
• the sports shoe 100 also includes a sockliner (not shown) (“insole” in English) covering the first mounting 30.
• the first mounting 30 is illustrated more specifically in Figures 1 and 2. Unlike the known prior art, the invention provides a first mounting 30 as a structuring element of the sports shoe 100 .
• the first mounting 30 has at least one part made of a hard material (typically having a hardness greater than 65 Shore A), different from a foamy material, an elastomeric material, a textile material, leather parts, or any other type of material conventionally used for the production of a first assembly.
• a hard material typically having a hardness greater than 65 Shore A
• the first mounting has a hardness greater than or equal to 20 Shore D or 80 Shore A.
• the first mounting 30 has, identically to the sole 10, a structure composed of three parts: a first part 32 located at the front of the shoe participating in the support of the forefoot, hereinafter called the front part 32 of the first mounting 30;
• the rear part 33 of the first assembly a second part 33 located at the rear of the shoe participating in the support of the heel, hereinafter called the rear part 33 of the first assembly
• Each of the parts 32, 33, 34 of the first assembly is defined and dimensioned in order to form an overall plantar profile providing support for the foot as enveloping as possible and as close as possible to the planar profile of the foot, thus preserving the anatomical and biomechanical balance of the sportsman.
• the central portion 34 of the first mounting 30, as well as the rear portion 33 of the first mounting 30, are made of a hard material, that is to say having a hardness equal to or greater than 65 Shore A or 20 Shore D, while at least one region of the front part 32 of the first mounting is made of a soft material, that is to say having a hardness less than 50 Shore A, and flexible, easily deformable, such as a textile material, a cardboard material, a leather material, or any other type of material conventionally used for the production of a first assembly or for the production of a sole cleanliness according to the state of the art.
• the first mounting 20 has a hardness equal to or greater than 80 Shore A, or 30 Shore D.
• the material used for the central portion 34 of the first mounting 30 and the rear portion 33 of the first mounting 30 is for example a thermoplastic material or a thermosetting material.
• the central portion 34 of the first mounting 30 and the rear portion 33 of the first mounting 30 are advantageously made in a thermoplastic or thermosetting material having a certain elastic deformation (of the order of a few millimeters) and capable of absorbing and dissipating significant impact energies and of resisting the mechanical stresses imposed on the shoe during its use in walking or in running.
• the central part 34 of the first mounting 30 and the rear portion 33 of the first mounting 30 are advantageously made of polyamide, of composite material with reinforcing fibers of glass or carbon.
• the rear part 33 of the first mounting 30 is substantially planar and of constant thickness ei.
• the rear part 33 has a thickness ei of a few millimeters, advantageously greater than 1.5 mm, and preferably between 2 and 8 mm so as to have sufficient rigidity of the rear part 33 so as not to deform under the weight of the sportsman.
• the rear portion 33 may have a structural reinforcement 140 to level of its lower face (that is to say at the level of the face facing the sole 10) produced by a localized excess thickness, or even by the insertion of a material having mechanical characteristics different from the mechanical characteristics of the material used for the production of the rear part 33 of the first mounting 30 '.
• the structural reinforcement 140 is positioned in a central region of the rear part 33, relative to a median plane of the rear part 33.
• the use of an additional thickness located at the rear part 33 also makes it possible to produce a wedging function facilitating the pre-positioning of the first mounting 30 ′ on the sole 10 during the assembly of shoe 100.
• the central part 34 of the first mounting 30 has an upper profile and a curved lower profile, so that the central part 34 forms an arch, or an arch, extending between the rear part 33 and the front part 32 of the first mounting 30.
• This central portion 34 in the form of an arch is able to receive and support the arch of the foot.
• the curvature or the arch of the arch of the central part 34 varies along the transverse axis of the shoe 100 in order to best match the shape of the arch of the midfoot and to support it properly.
• the central part 34 has a greater camber at the level of its internal profile than at the level of its external profile so as to best support the arch of the midfoot, the internal arch of which has a vault effect greater than that of its arch external.
• the longitudinal camber, internal and external, of the central part 34 makes it possible to better contain and better wrap the longitudinal arches of the foot and thus increase the bearing surface of the plantar supports limiting the fatigability of the sportsman. Loads and pressures on the foot are then better distributed during walking, running, jumps, ground support, changes of direction, etc.
• the rear region of the central part 34 (ie the region near the rear part 33) has at least one portion having a thickness Q2 equivalent to the thickness ei of the rear part 33 of the first assembly 30. This portion advantageously forms a junction between the posterior part
• the thickness of the central part 34 can be constant throughout this part, or even have a progressive refinement from the rear to the front of the first mounting 30, so that the central part 34 has, at level of its anterior region (ie near the anterior part 32) a thickness es less than the thickness e2.
• the particular camber of the arch of the central part 34 and its thickness (constant or thinner towards the front part 32 of the first assembly 30) are configured to support the natural arch of the foot as well as to allow a slight elastic deformation of this portion (of the order of 1 or 2 millimeters) when walking, jumping, or running, under the weight of the user.
• the elastic deformation of this arch of the central part 34 makes it possible to create additional damping to dampen the shock wave caused by the impact of the shoe on the ground, when walking and especially during running, and allows a return (rebound) of the energy stored during the damping phase to improve the next propulsion phase.
• the particular arch of the arch of the central part 34 thus preserves the biomechanical activity of the midfoot plantar arches in order to optimize the physiological qualities of the foot as a whole, that is to say the stability , shock absorption, elasticity, propulsion and drainage.
• the central part 34 may also have a structural reinforcement 141, positioned at its lower face (that is to say directed opposite the sole 10).
• This structural reinforcement 141 is produced by a localized excess thickness, or even by the insertion of a material having mechanical characteristics different from the mechanical characteristics of the material used for the production of the central part 34 of the first mounting 30 ’.
• the structural reinforcement 141 is positioned in a central region of the central part 34 of the first mounting 30 ′, relative to a median plane of the central part 34.
• the thickness of the additional thickness can also be variable and present a thinning towards the front of the first mounting 30.
• the front part 32 of the first mounting 30 is made of a material different from the central part 34 and the rear part 33 of the first mounting 30.
• the front part 32 is made of a flexible material, such as 'a textile material, one or more pieces of leather, a cardboard material, or any other material conventionally used for its relative flexibility for the realization of such a first assembly.
• the front part 32 has a small thickness e4 smaller than the thicknesses of the central part 34 and posterior 33, for example a few millimeters (preferably less than 3 mm), substantially constant except at its periphery which is slightly raised to be fixed to the rod 20 by ad hoc fixing means such as gluing or overmolding
• the front part 32 has a slightly curved surface profile whose front portion is slightly raised relative to its rear portion, so as to have maximum support on the ground during the digitigrade phase, that is to say ie during the period of walking or running, during which the support of the foot is conditioned on the forefoot.
• This front part 32 allows to receive the forefoot, and more precisely the front transverse arch as well as the front supports essentially formed by the heads of the first metatarsal and the fifth metatarsal.
• the first mounting 30 is formed by assembling the front part 32 on the one hand and a one-piece element forming the central part 34 and the rear part 33 on the other hand .
• the assembly is carried out for example by sewing, gluing, heat-sealing, or other ad hoc means, then the assembly is secured to the sole 10 as previously stated
• This embodiment is particularly well suited when the central part 34 and the rear part 33 are made of thermoplastic or of composite materials based on thermosetting materials and the front part 32 is a textile part, or a leather part. for example
• the central part 34 and the rear part 33 are directly injected by fusion or overmolding at the level of the front part 32 so as to obtain a first one-piece assembly 30 with a central and rear part in hard material and a front part 32 of flexible material.
• This second embodiment is particularly advantageous, when a cardboard material is used for the production of the front part 32 of the first mounting 30
• the front part 32 has four grooves, or cutouts, 142. These grooves, or cutouts, 142 are particularly useful and advantageous when the material used by the front part 32 is a cardboard material having a rigidity which is greater than the rigidity of the textile.
• This flexion zone 143 is advantageously chosen and corresponds to the contact zone of all the metatarsophalangeal heads of the foot.
• the transverse grooves 142 are grouped in this flexion zone 143 which extends over a part (not shown) or on either side of the first mounting 30 (ie between the inside and the outside of the first of mounting 30).
• this flexion zone 143 arises behind the necks of the metatarsal heads (and advantageously up to 2 cm maximum behind depending on the type of shoe) and ends in front of the metatarsal heads (and advantageously up to 2 cm maximum forward depending on the type of shoe).
• the flexion zone 143 as well as the grooves 142 are oriented along an axis of flexion fold F oblique with respect to the longitudinal axis L of the shoe 100.
• FIG. 5 represents a projection on the foot of this flexion zone 143 formed at the level of the first mounting 30.
• the bending zone 143 is located at a distance between 60 and 70% of the total length of the first mounting 30 relative to the rear end of the first mounting 30.
• This obliquity of the flexion zone 143 relative to the longitudinal axis L is directly relative to the support zone of the anterior arch of the foot.
• the grooves 142 formed in this flexion zone 143 also follow this general orientation so that the grooves 142 are oriented obliquely to the longitudinal axis L, with an angle a of 105 ° ⁇ 15 ° relative to the axis longitudinal L, (ie at an angle of 15 ° ⁇ 15 ° relative to the transverse axis T perpendicular to the longitudinal axis L) as illustrated in the figure
• This arrangement of the transverse grooves 142 of the first mounting 30 in this particular flexion zone 143 creates a primer to facilitate the folding of the shoe during the lateral unwinding of the anterior arch (by the outside of the 5 th metatarsal head to the 1 st metatarsal head) when walking and the support socket, as a true guide rail
• the sole may also include at its front part, at least one privileged flexion zone making it possible to promote and guide the folding of the shoe during the unwinding of the foot in a particular zone, chosen and predefined from the front part of the sole.
• this flexion zone of the sole is produced at the same level as the flexion zone 143 of the first mounting 30, to further optimize the control of the movement of the step when walking, or running, in the as efficient as possible by minimizing the resistance of the shoe when unrolling the foot
• the sole typically has a lower hardness than the rest of the sole.
• the hardness at this flexion zone is at least 10% lower than the hardness of the rest of the sole
• the reduction of the hardness of the sole can be achieved by the realization of transverse grooves (not shown) formed at the forefoot of the outer sole 14,
• transverse grooves of the outsole and the first mounting 30 allow to improve the supports and optimize the unrolling of the foot during walking or running, and improve the general balance of the sportsman with more functional activity safer and more economical
• the sole 10 may include at the level of this preferred flexion zone at the level of the forefoot, an inclusion of a M2 material having characteristics different from the M1 material used for the rest of the sole 10 (ie for the rear part, the central part and the front part outside the flexion zone).
• This second material M2 can be introduced into the outer sole 15, or even into the midsole, since the hardness of the sole 10 at this flexion zone is reduced by at least 10%.
• the material M2 is of the same nature as the material Ml and has a density lower than the material M1, typically a density lower than 10%.
• the material M2 is of a different nature from the material M1 and has a hardness lower than the material M1, typically a hardness less than 10%.
• the rear part 33 of the first mounting 30 is completed by a rear shock absorbing element 40 made of shock absorbing material making it possible to absorb the shocks and impacts of the heel when walking or running.
• the shock absorbing element 40 avoids the risk of injury and shock waves in the musculoskeletal system when walking or running.
• the rear shock absorbing element 40 is a removable heel which bears on the upper flat surface of the rear part 33 of the first mounting 30.
• the removable heel block 40 has a protuberance 42 on its underside, configured to cooperate with a housing 35 formed in the rear part 33 of the first mounting 30.
• the cooperation of the protuberance 42 and the housing 35 allows 'ensuring the positioning and maintenance of the removable heel piece 40 in longitudinal translation and in transverse translation at the level of the rear part 33.
• the rear damping element is directly molded onto the first mounting at the rear part 33 of the first mounting 30. More precisely, the rear damping element is overmolded on the upper face of the first mounting 30 (ie oriented towards the inside of the rod 20).
• the upper face 48 of the damping element 40 is substantially planar.
• the cushioning element 40 has a minimum base thickness providing the posterior elevation of the heel relative to the forefoot.
• the thickness of the damping element 40 is generally constant in its main portion 40a (portion contained in the rear portion 33 of the first mounting 30) then gradually decreases forward in its extension portion 40b (portion contained in the central part 34 of the first mounting 30) according to a straight beveled profile or even substantially concave.
• the damping element 40 fills the volume above the rear portion 33 of the first mounting 30 so as to create a posterior elevation positioning the foot at an optimized angle during the support taking phase.
• the cushioning element 40 fills the entire heel surface of the first fitting 30.
• the cushioning element 40 can be obtained from an elastic polymer material, or the like, chosen for its mechanical properties in order to provide a additional feature to the sports shoe 100.
• the cushioning element 40 is made of a slightly flexible and deformable material, such as a crosslinked foam, an elastomer so as to provide a cushioning function for the shoe 100.
• the damping element 40 may also include bubbles, cells or even tubular recesses and / or springs in order to improve the cushioning, anti-vibration, and / or return functions.
• the damping element 40 may also have on its upper surface 36 different roughness, reliefs, grooves, cells or even spikes defined according to the proprioceptive interest sought. The presence of spikes makes it possible, for example, to stimulate the plantar receptors in order to awaken the proprioceptive balance of the hindfoot, and thus to encourage the work of the lateral ankle stabilizers for a user presenting for example repetitive sprains. .
• the damping element 40 can also be formed by the association of several distinct materials. It can in particular be formed by a plurality of superimposed layers, for example in the thickness, along a longitudinal axis, or even along a transverse axis, of different materials having different mechanical properties (qualities of cushioning, stability, absorption of shock waves, or absorption of vibrations generating various mechanical pathologies).
• the damping element 40 makes it possible to provide, by a strategic and clever choice of a material or a mixture of materials, damping properties, but also stability, absorption of waves of noxious shocks to anatomical structures or absorption of vibrations generating various functional pathologies in athletes.
• the removable nature of the damping element also allows it to be easily replaced by the inside of the rod 20. It suffices for the user to insert his hand inside the rod 20 through its opening, to lift the sockliner (not shown in the figures) which generally covers the whole of the first mounting 30, then remove the damping element 40 from its housing 35 and replace it with another damping element having different or additional mechanical properties.
• the removable damping element 40 can also have various indications on the surface (color codes, names) on its mechanical properties, which allows the user to select it from others depending on the characteristics sought (for example , flexibility or, on the contrary, rigidity), depending on the weight, or the desired program
• the removable damping element 40 constitutes an entirely modular and customizable element both in terms of its mechanical properties and its aesthetic appearance.
• the shock absorbing element has a thickness of between 1 and 25 mm (and preferably between 10 and 15 mm) in order to bring about an optimal elevation of the heel relative to the forefoot.
• the first assembly 30 aims to create a rigid structure at the central and rear part of the shoe, slightly deformable, or at least with controlled deformation at the central part 34.
• the first mounting 30 thus forms a "rigid frame" of the shoe 100, positioned between the foot and the sole 10 which is flexible and deformable.
• the first mounting 30 thus forms a stable, repeatable and durable support for the midfoot and the heel when walking or running, while the sole 10 acts as a shock absorber, deforming and fully playing its role of adaptability to the constraints of the terrain without the biomechanical structure of the foot being impacted by these differences in support linked to the nature of the terrain, the first mounting 30 on which the foot is in support remains dimensionally stable.
• the shoe 200 may further include a rear shell 50 rigid, hollow, and integrated in the rear part 13 of the sole 10 so as to receive the first mounting 30, and more particularly the rear part 33 of the first assembly 30.
• This rear shell 50 is made of a plastic material, preferably rigid, of the reinforced thermoplastic or thermosetting type. optionally by nylon, glass or other type of fibers, and forms a flat support at its upper face to receive the rear part 33 of the first mounting 30
• the rear shell 50 is made rigid enough not to deform under the weight of the sportsman.
• the rear shell is advantageously formed by a bottom wall 51 and by a peripheral side wall 52 extending vertically from the bottom wall 51
• the walls 51, 52 of the shell 50 form an enveloping shell to receive the rear part 33 of the first mounting 30, as well as the damping element 40.
• the rear shell 50 thus makes it possible to further optimize the support and the rigidity of the shoe 200, in particular at the level of the rear part and around the damping element 40
• the sports shoe according to the invention advantageously combining a first fitting 30 of hard material (having a hardness greater than 20 Shore D) and a damping element at the heel of soft material, less than 50 Shore A (by example in sparkling materials, elastomer,) has many advantages
• the shape of the first mounting 30 combined with a damping element bearing on the upper face of the first mounting and forming a booster makes it possible to position the foot at a grip angle. optimum support.
• the plantar flexion of the ankle is passively accentuated under stress, it is mainly controlled by the calf.
• the control of the angle of the foot when taking support by the optimized positioning of the foot provided by the shoe according to the invention makes it possible to store energy (in particular at the level of the arch of the central part 34 of the first assembly 30) which will be rendered during the next propulsion phase, like a spring.
• the sports shoe according to the invention constitutes an elementary link in the prevention, the protection, and the improvement of the performance of the sportsman.
• the support of the forefoot further strengthens the stabilizing muscles
• the embodiments described above relate to a running shoe
• the invention may also relate to shoes intended for the practice of other sports such as football, rugby, American football, baseball, golf, trail running, walking, hiking or other sports
• the invention also relates to a sports shoe with rigid cleats, such as a football, rugby shoe, etc., having rigid cleats (i.e. not deformable by hand) molded or screwed
• rigid studs By rigid studs is meant studs which have a hardness greater than 20 shore D.

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• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)

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• 2018
  • 2018-11-12 FR FR1860442A patent/FR3088177B1/fr active Active
• 2019
  • 2019-11-12 EP EP19805587.3A patent/EP3880024A1/de active Pending
  • 2019-11-12 WO PCT/EP2019/081072 patent/WO2020099436A1/fr unknown
  • 2019-11-12 US US17/292,980 patent/US20220031012A1/en active Pending

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