EP3387937B1 - Shoe with improved sole - Google Patents

Shoe with improved sole Download PDF

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Publication number
EP3387937B1
EP3387937B1 EP18165704.0A EP18165704A EP3387937B1 EP 3387937 B1 EP3387937 B1 EP 3387937B1 EP 18165704 A EP18165704 A EP 18165704A EP 3387937 B1 EP3387937 B1 EP 3387937B1
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EP
European Patent Office
Prior art keywords
shoe
length
limit
groove
distance equal
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EP18165704.0A
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German (de)
French (fr)
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EP3387937A1 (en
Inventor
Marlène GIANDOLINI
René Borel
Simon Bartold
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Salomon SAS
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Salomon SAS
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    • 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
    • A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
    • 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
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/06—Running shoes; Track shoes

Definitions

  • the invention relates to a shoe intended for different practices, such as urban use or a sport.
  • the shoe can be used for activities such as walking, running on flat terrain or in the mountains, skateboarding, ball sport, cross-country or telemark skiing, snowboarding, snowshoeing, Or other.
  • the shoe must in particular have good damping capacity and a certain flexibility. Damping is intended to reduce, or even prevent, fatigue or trauma which may result from pressure or impact on the ground, or from various stresses. Flexibility, on the other hand, should be understood as an ability to accompany certain deformations of a user's foot, relative movements of the foot and lower leg, or the like, during a walking or running cycle. It is a question in particular of allowing a good course of the foot during walking or running, and for this it is known to manufacture a shoe which is flexible at the level of its sole assembly.
  • the outer sole of a flexible shoe comprises a shock absorbing sole made up of a fairly significant number of small platforms interconnected by connection elements.
  • This structure makes the shock-absorbing sole very flexible in transverse bending, along a longitudinal axis, and also very flexible in longitudinal bending, along a transverse axis. This is why the cushioning sole flexes easily to follow the course of the foot during a gait cycle, with the idea of respecting as much as possible the natural movement of the foot.
  • the general object of the invention is to provide an improved shoe. More particularly, the invention seeks to make the ground support more stable, whether in regular or uneven terrain. The invention also seeks to make the sole cushioning a flexible shoe capable of transmitting sensory information between the ground and the foot with fidelity, in whole or in almost all, to reduce the fatigue of the user and to increase his sports performances, or even to reduce the risk of onset of trauma.
  • the invention provides a flexible shoe comprising an outer sole and an upper, the outer sole comprising a damping sole, the damping sole extending in length from a rear end to a front end, in width between a lateral side and a medial side, and in height from a lower face to an upper face, the lower face having lower grooves, the upper face having upper grooves, the lower grooves of the lower face being opposite the upper grooves of the upper face.
  • the flexible shoe according to the invention is characterized by the fact that the lower grooves of the lower face and the upper grooves of the upper face correspond to the main joints of the foot, and by the fact that the lower grooves of the lower face and the grooves upper surfaces of the upper face delimit the platforms of the shock-absorbing sole.
  • the platforms define stable support zones for the foot.
  • Each platform of the shock-absorbing sole delimited by grooves or portions of groove, directly and precisely transmits sensory information, pressure, impacts and other stresses.
  • Each platform allows anatomical functioning of the different joints of the foot in the sagittal, transverse and frontal planes during a walking or running cycle. More broadly, it appears that the damping sole as a whole respects the joint mobility of the foot, because it directly and precisely transmits sensory information, pressure, impacts and other stresses.
  • the shock-absorbing sole, and consequently also the sole assembly in its entirety faithfully follows each unwinding movement of the foot, since it follows the joints.
  • the invention therefore respects the kinematics of the joints of the foot, which operate independently of one another due to the specific arrangement of the grooves.
  • the structure of the shock-absorbing sole allows the bones to move so as not to have any constraint when moving forward, that is to say when walking or running. This allows the foot to function naturally. This is why the cushioning sole improves energy efficiency, respecting the natural biomechanics of the foot and maintaining a good level of cushioning.
  • the shock-absorbing sole does not constrain the foot, allows mobility of the various joints of the foot and the lower limb, while reducing the stresses applied to them.
  • Additional benefits to those associated with better transmission of sensory information, include reduced user fatigue and improved performance. its performance, or a reduction in the risk of trauma, whether in the foot or in the knee, as will be seen better below in the description.
  • the unrolling of the foot is more efficient during the phase of contact with the ground due to a reduction in the forces applied in the frontal and transverse planes, in particular at the level of the hip and the knee, i.e. forces not directed in the direction of movement of the user.
  • the invention provides an improved flexible shoe.
  • a walking shoe 1 is provided to accommodate the user's foot.
  • the shoe 1 comprises an external sole assembly 2 and an upper 3 secured to the sole assembly.
  • the rod is shown in dotted lines for convenience. It is simply a question of not overburdening the description.
  • any upper structure known to those skilled in the art can be associated with the outer sole assembly 2.
  • the latter comprises a damping sole 4, which extends lengthwise, in a longitudinal direction L, from a rear end 5 to at a front end 6, in width, in a transverse direction W, between a lateral side 7 and a medial side 8, and in height from a lower face 9 to an upper face 10.
  • the face 9 is said to be lower because it is intended to contact the ground, directly or indirectly.
  • a wear layer not shown is secured to the lower face 9.
  • This is generally a layer of synthetic material, such as rubber or any suitable material, to give the shoe properties such as good adhesion to the ground.
  • the wear layer may consist of a single part, or of several parts. Alternatively, several superimposed layers may be provided on the side of the lower face 9, with different mechanical properties.
  • the face 10, for its part, is said to be upper because it is intended to be secured to the rod 3, directly or indirectly.
  • a functional layer is secured to the upper face 10.
  • the functional layer may consist of a single part, or of several parts.
  • the shoe 1 is structured to allow good progress of the foot during walking, transmissions of sensory information, and impulses for support or landings. This is why the outer sole assembly 2 and the upper 3 are relatively flexible. It will be better understood in the remainder of the description that, in particular, the damping sole 4 is flexible.
  • the lower face 9 has lower grooves 11, 21, 27, 33, 37, 43
  • the upper face 10 has upper grooves 14, 24, 30, 35, 40 , 45, the lower grooves of the lower face being opposite the upper grooves of the upper face. This facilitates reversible deformations of the damping sole, in particular in flexion.
  • the lower grooves 11, 21, 27, 33, 37, 43 of the lower face 9 and the upper grooves 14, 24, 30, 35, 40, 45 of the upper face 10 correspond to the main joints of the foot
  • the lower grooves of the lower face 9 and the upper grooves of the upper face 10 define platforms 48 to 68 of the damping sole 4.
  • the platforms define stable support zones for the foot.
  • the invention respects the kinematics of the joints of the foot, which operate independently of one another due to the specific arrangement of the grooves.
  • the structure of the shock-absorbing sole allows the bones to move so as not to have any constraint when moving forward, that is to say when walking. This allows the foot to function naturally. This is why the cushioning sole improves energy efficiency, respecting the natural biomechanics of the foot and maintaining a good level of cushioning.
  • the lower face 9 has a lower longitudinal groove 11 which extends from a rear limit 12 to a front limit 13, the rear limit 12 being remote from the rear end 5 by a distance between 0 and 20% of the length of the damping sole 4, the front limit 13 being away from the front end 6 by a distance of between 0 and 20% of the length of the damping sole, that the upper face 10 has a upper longitudinal groove 14 which extends from a rear limit 15 to a front limit 16, the rear limit 15 being moved away from the rear end 5 by a distance between 0 and 20% of the length of the cushioning sole , the front limit 16 being away from the front end 6 by a distance between 0 and 20% of the length of the damping sole, the lower longitudinal groove 11 bending over a portion between 80 and 100% of its length, groove l lower longitudinal elevation 11 having a rear inflection point 17 located away from the rear extremity 5 at a distance between 30 and 60% of the length of the boot, the lower longitudinal groove 11 having a front
  • the arrangement of the lower longitudinal grooves 9 and upper 14 give the damping sole 4 a transverse flexibility, along all or almost all of its length.
  • the transverse bending is more marked at the level of the grooves. This allows transverse support transfers, that is to say a passage of supports from the lateral side to the medial side and vice versa.
  • the lower face 9 has a first transverse groove 21 which extends from a lateral limit 22 to a medial limit 23, between a transverse line situated away from the front end 6 by a distance equal to 15% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 30% of the length of the shoe, that the upper face 10 has a first transverse groove 24 which extends from a lateral limit 25 to a medial limit 26, between a transverse line situated away from the front end 6 by a distance equal to 15% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 30% of the length of the boot, and that the first transverse groove 21 of the lower face 9 is opposite the first transverse groove 24 of the face upper 10.
  • the first transverse grooves 21, 24 are in fact located ées in an area that corresponds to the joints of the toes. This facilitates the unwinding of the front part of the foot.
  • the lower face 9 has a second transverse groove 27 which extends from a lateral limit 28 to a medial limit 29, between a transverse line situated away from the front end 6 by a distance equal to 30% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 45% of the length of the shoe, in that the upper face 10 has a second transverse groove 30 which extends from a lateral limit 31 to a medial limit 32, between a transverse line situated away from the front end 6 by a distance equal to 30% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 45% of the length of the shoe, and by the fact that the second transverse groove 27 of the lower face 9 is opposite the second transverse groove 30 of the upper face 10.
  • the second transverse grooves 27, 30 are in fact located in a zone which corresponds to the articulations between the metatarsus and the toes. This also facilitates the unwinding of the front part of the foot
  • the lower face 9 has a first oblique groove 33 which extends from a lateral limit 34 to the longitudinal groove 11, between a transverse line situated away from the front end 6 of a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 60% of the length of the shoe, that the upper face 10 has a first oblique groove 35 which extends from a lateral limit 36 to the longitudinal groove 14, between a transverse line situated away from the front end 6 by a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 60% of the length of the boot, and that the first oblique groove 33 of the lower face 9 is opposite the first oblique groove 35 of the upper face 10.
  • the first oblique grooves 33, 35 are in fact located es in a lateral area of articulation between the metatarsus and the cuboid. This facilitates the unwinding of the foot
  • the lower face 9 has a second oblique groove 37 which extends from a lateral limit 38 to a medial limit 39, between a transverse line situated away from the front end 6 by a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe
  • the upper face 10 has a second oblique groove 40 which extends from a lateral limit 41 to a medial limit 42, between a transverse line situated away from the front end 6 by a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe
  • the second oblique groove 37 of the lower face 9 is opposite the second oblique groove 40 of the face upper 10.
  • the second oblique grooves 37, 40 are in fact located in an area of articulation. ulation between the calcaneus and the metatarsus. This facilitates deform
  • the lower face 9 has a third oblique groove 43 which extends from a medial limit 44 to the second oblique groove 37, between a transverse line situated away from the front end 6 d 'a distance equal to 50% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe, that the upper face 10 has a third oblique groove 45 which extends from a medial limit 46 to the second oblique groove 40, between a transverse line situated away from the front end 6 by a distance equal to 50% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe, and that the third oblique groove 43 of the lower face 9 is opposite the third groove oblique 45 of the upper face 10.
  • the third oblique grooves 43, 45 are in fact located in the area of the arch of the foot. This facilitates deformations of the foot at the level of its arch
  • the upper face 10 has an additional longitudinal groove 47, located between the lateral side 7 and the longitudinal groove 14, and extending between the rear end 5 and the second oblique groove 40.
  • the longitudinal groove 47 is actually located in a heel area of the foot. This helps the heel of the foot to wedge crosswise.
  • the lower face 9 of the damping sole 4 has ten platforms 48 to 57, and that the upper face 10 of the damping sole 4 has eleven platforms 58 to 68.
  • These platforms are the divisions of the damping sole 4 which are delimited by the grooves. The platforms respectively allow the foot to find stable support locally, in particular during an unwinding movement.
  • the thickness of the shock-absorbing sole 4 measured halfway between the lateral side 7 and the medial side 8, is between 1 and 8 mm towards the front end 6 and between 5 and 25 mm towards the rear end 5, and that the thickness of the shock absorbing sole 4 increases from the front end 6 towards the rear end 5. This is to ensure that the heel of the foot is slightly raised by compared to the front of the foot. This greatly, if not totally, prevents the appearance of trauma to the Achiles tendon.
  • the depth of the grooves 11, 14, 21, 24, 27, 30, 33, 35, 37, 40, 43, 45, 47 of the shock absorbing sole 4 is increasingly greater from the front end. 6 towards the rear end 5. This preserves the ability of the cushioning sole 4 to flex where it is thicker, ie towards the rear.
  • the lower surfaces of the lower platforms 48 to 57 are contained in a regular lower envelope surface, and that the upper surfaces of the upper platforms 58 to 68 are contained in a regular upper envelope surface. This is to make the course of the foot during a walking cycle as regular as possible.
  • the damping sole 4 comprises an upper peripheral lip 69. This facilitates the joining together by gluing of the rod 3 and of the damping sole 4.
  • the damping sole 4 is a single piece. This makes manufacturing easier and faster.
  • the shock-absorbing sole may be made up of several parts. united to each other. These parts can all be made with the same material or, alternatively, different materials can be used to make different parts.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

L'invention se rapporte à une chaussure destinée à différentes pratiques, comme un usage urbain ou un sport. La chaussure peut être utilisée pour des activités telles que la marche, la course sur terrain plat ou en montagne, la planche à roues, un sport de balle, le ski de fond ou de télémark, le surf sur neige, la raquette à neige, ou autre.The invention relates to a shoe intended for different practices, such as urban use or a sport. The shoe can be used for activities such as walking, running on flat terrain or in the mountains, skateboarding, ball sport, cross-country or telemark skiing, snowboarding, snowshoeing, Or other.

Pour les utilisations envisagées, la chaussure doit notamment présenter une bonne capacité d'amortissement et une certaine souplesse. L'amortissement a vocation à réduire, voire empêcher, les fatigues ou les traumatismes qui peuvent résulter d'appuis ou d'impacts sur le sol, ou de sollicitations diverses. La souplesse, quant à elle, doit être comprise comme une aptitude à accompagner certaines déformations du pied d'un utilisateur, des mouvements relatifs du pied et du bas de jambe, ou autre, pendant un cycle de marche ou de course. Il s'agit notamment de permettre un bon déroulement du pied pendant la marche ou la course, et pour cela il est connu de fabriquer une chaussure qui soit souple au niveau de son semelage.For the envisaged uses, the shoe must in particular have good damping capacity and a certain flexibility. Damping is intended to reduce, or even prevent, fatigue or trauma which may result from pressure or impact on the ground, or from various stresses. Flexibility, on the other hand, should be understood as an ability to accompany certain deformations of a user's foot, relative movements of the foot and lower leg, or the like, during a walking or running cycle. It is a question in particular of allowing a good course of the foot during walking or running, and for this it is known to manufacture a shoe which is flexible at the level of its sole assembly.

Par exemple, selon le document US 8,656,613 , le semelage externe d'une chaussure souple comprend une semelle amortissante constituée d'un nombre assez significatif de petites plateformes reliées entre elles par des éléments de connexion. Cette structure rend la semelle amortissante très souple en flexion transversale, selon un axe longitudinal, et aussi très souple en flexion longitudinale, selon un axe transversal. C'est pourquoi la semelle amortissante fléchit facilement pour suivre le déroulement du pied pendant un cycle de marche, dans l'idée de respecter autant que faire se peut le mouvement naturel du pied.For example, according to the document US 8,656,613 , the outer sole of a flexible shoe comprises a shock absorbing sole made up of a fairly significant number of small platforms interconnected by connection elements. This structure makes the shock-absorbing sole very flexible in transverse bending, along a longitudinal axis, and also very flexible in longitudinal bending, along a transverse axis. This is why the cushioning sole flexes easily to follow the course of the foot during a gait cycle, with the idea of respecting as much as possible the natural movement of the foot.

Les avantages obtenus avec une chaussure selon le document US 8,656,613 sont réels : la semelle amortissante qui y est présentée facilite effectivement la marche ou la course. Cependant, cette semelle présente malgré tout un certain nombre d'inconvénients. Parmi ceux-ci, on peut par exemple citer une certaine instabilité des appuis au sol, en particulier sur des terrains accidentés. Un autre inconvénient est une transmission des informations sensorielles entre le sol et le pied incomplète, voire faussée, surtout lors d'une utilisation très sportive ou extrême. Ceci est essentiellement dû au fait que les différentes plateformes sont réparties de manière aléatoire et ne suivent pas de façon significative, c'est-à-dire en corrélation avec l'anatomie, les principales articulations d'un pied. En conséquence l'utilisateur ne perçoit pas toujours avec exactitude ou avec fidélité les appuis, les impacts et, d'une manière plus générale, les diverses sollicitations qui se manifestent au niveau du semelage. D'autres inconvénients observés sont, notamment, une fatigue supplémentaire et, par corollaire, une réduction des performances sportives, ou encore un risque accru d'apparition de traumatismes, tels que des traumatismes articulaires au niveau du pied et même au niveau du genou.The advantages obtained with a shoe according to the document US 8,656,613 are real: the shock-absorbing sole that is presented there actually makes walking or running easier. However, this sole nevertheless has a certain number of drawbacks. Among these, one can for example quote a certain instability of the supports on the ground, in particular on uneven grounds. Another drawback is an incomplete or even distorted transmission of sensory information between the ground and the foot, especially during very sporting or extreme use. This is mainly due to the fact that the different platforms are distributed randomly and do not significantly follow, that is to say in correlation with the anatomy, the main joints of a foot. Consequently, the user does not always perceive with exactitude or with fidelity the supports, the impacts and, more generally, the various stresses which appear at the level of the sole assembly. Other drawbacks observed are, in particular, additional fatigue and, by corollary, a reduction in sports performance, or even an increased risk of the appearance of traumas, such as articular trauma in the foot and even in the knee.

Par rapport à cela, l'invention a pour but général de fournir une chaussure améliorée. Plus particulièrement l'invention cherche à rendre les appuis au sol plus stables, que ce soit en terrain régulier ou accidenté. L'invention cherche encore à rendre la semelle amortissante d'une chaussure souple capable de transmettre les informations sensorielles entre le sol et le pied avec fidélité, en totalité ou en quasi-totalité, à réduire la fatigue de l'utilisateur et à augmenter ses performances sportives, ou encore à réduire le risque d'apparition de traumatismes.In relation to this, the general object of the invention is to provide an improved shoe. More particularly, the invention seeks to make the ground support more stable, whether in regular or uneven terrain. The invention also seeks to make the sole cushioning a flexible shoe capable of transmitting sensory information between the ground and the foot with fidelity, in whole or in almost all, to reduce the fatigue of the user and to increase his sports performances, or even to reduce the risk of onset of trauma.

Pour ce faire, l'invention propose une chaussure souple comprenant un semelage externe et une tige, le semelage externe comprenant une semelle amortissante, la semelle amortissante s'étendant en longueur depuis une extrémité arrière jusqu'à une extrémité avant, en largeur entre un côté latéral et un côté médial, et en hauteur depuis une face inférieure jusqu'à une face supérieure, la face inférieure présentant des rainures inférieures, la face supérieure présentant des rainures supérieures, les rainures inférieures de la face inférieure étant en face des rainures supérieures de la face supérieure.To do this, the invention provides a flexible shoe comprising an outer sole and an upper, the outer sole comprising a damping sole, the damping sole extending in length from a rear end to a front end, in width between a lateral side and a medial side, and in height from a lower face to an upper face, the lower face having lower grooves, the upper face having upper grooves, the lower grooves of the lower face being opposite the upper grooves of the upper face.

La chaussure souple selon l'invention est caractérisée par le fait que les rainures inférieures de la face inférieure et les rainures supérieures de la face supérieure correspondent aux principales articulations du pied, et par le fait que les rainures inférieures de la face inférieure et les rainures supérieures de la face supérieure délimitent des plateformes de la semelle amortissante.The flexible shoe according to the invention is characterized by the fact that the lower grooves of the lower face and the upper grooves of the upper face correspond to the main joints of the foot, and by the fact that the lower grooves of the lower face and the grooves upper surfaces of the upper face delimit the platforms of the shock-absorbing sole.

Par leur localisation, les plateformes délimitent pour le pied des zones d'appui stables. Chaque plateforme de la semelle amortissante, délimitée par des rainures ou des portions de rainure, transmet directement et précisément les informations sensorielles, les appuis, les impacts et autres sollicitations. Chaque plateforme permet un fonctionnement anatomique des différentes articulations du pied dans les plans sagittal, transversal et frontal au cours d'un cycle de marche ou de course. De manière plus large il apparaît que la semelle amortissante dans son ensemble respecte la mobilité articulaire du pied, car elle transmet directement et précisément les informations sensorielles, les appuis, les impacts et autres sollicitations. On peut dire par corollaire que la semelle amortissante, et en conséquence aussi le semelage dans son intégralité, suit avec fidélité chaque mouvement de déroulement du pied, puisqu'il en suit les articulations. L'utilisateur perçoit avec exactitude ou avec fidélité les appuis, les impacts et, d'une manière plus générale, les diverses sollicitations qui se manifestent au niveau du semelage. L'invention respecte donc la cinématique des articulations du pied, lesquelles fonctionnent indépendamment les unes des autres du fait de la disposition spécifique des rainures. La structure de la semelle amortissante permet aux os de bouger pour ne pas avoir de contrainte à l'avancement, c'est-à-dire au mouvement de marche ou de course. Cela permet au pied de fonctionner de manière naturelle. C'est pourquoi la semelle amortissante améliore le rendement énergétique, en respectant la biomécanique naturelle du pied et en conservant un bon niveau d'amortissement. La semelle amortissante ne contraint pas le pied, autorise la mobilité des différentes articulations du pied et du membre inférieur, tout en réduisant les contraintes qui y sont appliquées.By their location, the platforms define stable support zones for the foot. Each platform of the shock-absorbing sole, delimited by grooves or portions of groove, directly and precisely transmits sensory information, pressure, impacts and other stresses. Each platform allows anatomical functioning of the different joints of the foot in the sagittal, transverse and frontal planes during a walking or running cycle. More broadly, it appears that the damping sole as a whole respects the joint mobility of the foot, because it directly and precisely transmits sensory information, pressure, impacts and other stresses. As a corollary, it can be said that the shock-absorbing sole, and consequently also the sole assembly in its entirety, faithfully follows each unwinding movement of the foot, since it follows the joints. The user perceives with exactitude or with fidelity the supports, the impacts and, more generally, the various stresses which appear at the level of the sole assembly. The invention therefore respects the kinematics of the joints of the foot, which operate independently of one another due to the specific arrangement of the grooves. The structure of the shock-absorbing sole allows the bones to move so as not to have any constraint when moving forward, that is to say when walking or running. This allows the foot to function naturally. This is why the cushioning sole improves energy efficiency, respecting the natural biomechanics of the foot and maintaining a good level of cushioning. The shock-absorbing sole does not constrain the foot, allows mobility of the various joints of the foot and the lower limb, while reducing the stresses applied to them.

Des avantages supplémentaires, à ceux liés à une meilleure transmission des informations sensorielles, sont notamment une réduction de la fatigue de l'utilisateur et une amélioration de ses performances, ou une réduction des risques de traumatismes, que ce soit au niveau du pied ou au niveau du genou, comme on le verra mieux par la suite dans la description. Le déroulement du pied est plus efficient lors de la phase de contact avec le sol du fait d'une diminution des forces appliquées dans les plans frontal et transversal, notamment au niveau de la hanche et du genou, c'est-à-dire des forces non dirigées dans le sens de déplacement de l'utilisateur.Additional benefits, to those associated with better transmission of sensory information, include reduced user fatigue and improved performance. its performance, or a reduction in the risk of trauma, whether in the foot or in the knee, as will be seen better below in the description. The unrolling of the foot is more efficient during the phase of contact with the ground due to a reduction in the forces applied in the frontal and transverse planes, in particular at the level of the hip and the knee, i.e. forces not directed in the direction of movement of the user.

On peut dire de manière générale que l'invention propose une chaussure souple améliorée.In general, it can be said that the invention provides an improved flexible shoe.

D'autres caractéristiques et avantages de l'invention seront mieux compris à l'aide de la description qui va suivre, en regard des figures annexées, lesquelles illustrent une forme de réalisation non limitative, selon la liste ci-après:

  • la figure 1 est vue en perspective avant qui montre le dessous d'une semelle amortissante, pour une chaussure souple selon la forme de réalisation décrite,
  • la figure 2 est vue du dessous de la semelle amortissante de la figure 1,
  • la figure 3 est une du dessus de la semelle amortissante de la figure 1,
  • la figure 4 est une coupe selon IV-IV de la figure 3, augmentée d'une représentation schématique de la tige de la chaussure.
Other characteristics and advantages of the invention will be better understood with the aid of the description which follows, with reference to the appended figures, which illustrate a non-limiting embodiment, according to the list below:
  • the figure 1 is a front perspective view which shows the underside of a shock-absorbing sole, for a flexible shoe according to the embodiment described,
  • the figure 2 is seen from below the shock absorbing sole of the figure 1 ,
  • the figure 3 is one of the top of the cushioning sole of the figure 1 ,
  • the figure 4 is a cut along IV-IV of the figure 3 , augmented by a schematic representation of the upper of the shoe.

La forme de réalisation, qui va être décrite après à l'aide des figures 1 à 4, concerne par exemple une chaussure souple pour la marche sur un sol dur ou dans la neige. Cependant l'invention s'applique à d'autres domaines tels que ceux évoqués avant.The embodiment, which will be described later with the aid of figures 1 to 4 , for example relates to a flexible shoe for walking on hard ground or in snow. However, the invention applies to other fields such as those mentioned above.

Comme on le comprend ensemble à l'aide des figures 1 à 4, une chaussure de marche 1 est prévue pour accueillir le pied de l'utilisateur.As we understand together with the help of figures 1 to 4 , a walking shoe 1 is provided to accommodate the user's foot.

De manière connue, la chaussure 1 comprend un semelage externe 2 et une tige 3 solidarisée au semelage. La tige est représentée en pointillé pour des raisons de commodité. Il s'agit simplement de ne pas alourdir la description. On précise que toute structure de tige connue de l'homme du métier peut être associée au semelage externe 2. Ce dernier comprend une semelle amortissante 4, laquelle s'étend en longueur, selon une direction longitudinale L, depuis une extrémité arrière 5 jusqu'à une extrémité avant 6, en largeur, selon une direction transversale W, entre un côté latéral 7 et un côté médial 8, et en hauteur depuis une face inférieure 9 jusqu'à une face supérieure 10.In known manner, the shoe 1 comprises an external sole assembly 2 and an upper 3 secured to the sole assembly. The rod is shown in dotted lines for convenience. It is simply a question of not overburdening the description. It should be noted that any upper structure known to those skilled in the art can be associated with the outer sole assembly 2. The latter comprises a damping sole 4, which extends lengthwise, in a longitudinal direction L, from a rear end 5 to at a front end 6, in width, in a transverse direction W, between a lateral side 7 and a medial side 8, and in height from a lower face 9 to an upper face 10.

La face 9 est dite inférieure parce que destinée à contacter le sol, directement ou indirectement. Lorsque le contact est indirect, alors par exemple une couche d'usure non représentée est solidarisée à la face inférieure 9. Il s'agit généralement d'une couche de matière synthétique, comme du caoutchouc ou tout matériau approprié, pour conférer à la chaussure des propriétés comme une bonne adhérence au sol. La couche d'usure peut être constituée d'une seule pièce, ou de plusieurs pièces. Il peut alternativement être prévu plusieurs couches superposées du côté de la face inférieure 9, avec des propriétés mécaniques différentes.The face 9 is said to be lower because it is intended to contact the ground, directly or indirectly. When the contact is indirect, then for example a wear layer not shown is secured to the lower face 9. This is generally a layer of synthetic material, such as rubber or any suitable material, to give the shoe properties such as good adhesion to the ground. The wear layer may consist of a single part, or of several parts. Alternatively, several superimposed layers may be provided on the side of the lower face 9, with different mechanical properties.

La face 10, quant à elle, est dite supérieure parce que destinée à être solidarisée à la tige 3, directement ou indirectement. Lorsque la solidarisation est indirecte, alors par exemple une couche fonctionnelle non représentée est solidarisée à la face supérieure 10. Dans le même esprit que pour la couche d'usure, la couche fonctionnelle peut être constituée d'une seule pièce, ou de plusieurs pièces.The face 10, for its part, is said to be upper because it is intended to be secured to the rod 3, directly or indirectly. When the connection is indirect, then for example a functional layer, not shown, is secured to the upper face 10. In the same spirit as for the wear layer, the functional layer may consist of a single part, or of several parts.

La chaussure 1 est structurée pour permettre un bon déroulement du pied pendant la marche, des transmissions d'informations sensorielles, et des impulsions pour des appuis ou des réceptions. C'est pourquoi le semelage externe 2 et la tige 3 sont relativement souples. On comprendra mieux dans la suite de la description que, particulièrement, la semelle amortissante 4 est souple.The shoe 1 is structured to allow good progress of the foot during walking, transmissions of sensory information, and impulses for support or landings. This is why the outer sole assembly 2 and the upper 3 are relatively flexible. It will be better understood in the remainder of the description that, in particular, the damping sole 4 is flexible.

En ce qui concerne plus précisément la structure de la semelle amortissante, la face inférieure 9 présente des rainures inférieures 11, 21, 27, 33, 37, 43, la face supérieure 10 présente des rainures supérieures 14, 24, 30, 35, 40, 45, les rainures inférieures de la face inférieure étant en face des rainures supérieures de la face supérieure. Cela facilite des déformations réversibles de la semelle amortissante, notamment en flexion.As regards more precisely the structure of the damping sole, the lower face 9 has lower grooves 11, 21, 27, 33, 37, 43, the upper face 10 has upper grooves 14, 24, 30, 35, 40 , 45, the lower grooves of the lower face being opposite the upper grooves of the upper face. This facilitates reversible deformations of the damping sole, in particular in flexion.

Selon l'invention, les rainures inférieures 11, 21, 27, 33, 37, 43 de la face inférieure 9 et les rainures supérieures 14, 24, 30, 35, 40, 45 de la face supérieure 10 correspondent aux principales articulations du pied, et les rainures inférieures de la face inférieure 9 et les rainures supérieures de la face supérieure 10 délimitent des plateformes 48 à 68 de la semelle amortissante 4.According to the invention, the lower grooves 11, 21, 27, 33, 37, 43 of the lower face 9 and the upper grooves 14, 24, 30, 35, 40, 45 of the upper face 10 correspond to the main joints of the foot , and the lower grooves of the lower face 9 and the upper grooves of the upper face 10 define platforms 48 to 68 of the damping sole 4.

Par leur localisation, les plateformes délimitent pour le pied des zones d'appui stables. L'invention respecte la cinématique des articulations du pied, lesquelles fonctionnent indépendamment les unes des autres du fait de la disposition spécifique des rainures. La structure de la semelle amortissante permet aux os de bouger pour ne pas avoir de contrainte à l'avancement, c'est-à-dire au mouvement de marche. Cela permet au pied de fonctionner de manière naturelle. C'est pourquoi la semelle amortissante améliore le rendement énergétique, en respectant la biomécanique naturelle du pied et en conservant un bon niveau d'amortissement.By their location, the platforms define stable support zones for the foot. The invention respects the kinematics of the joints of the foot, which operate independently of one another due to the specific arrangement of the grooves. The structure of the shock-absorbing sole allows the bones to move so as not to have any constraint when moving forward, that is to say when walking. This allows the foot to function naturally. This is why the cushioning sole improves energy efficiency, respecting the natural biomechanics of the foot and maintaining a good level of cushioning.

En considérant plus particulièrement les figures 2 et 3, on peut voir que la face inférieure 9 présente une rainure longitudinale inférieure 11 qui s'étend depuis une limite arrière 12 jusqu'à une limite avant 13, la limite arrière 12 étant éloignée de l'extrémité arrière 5 d'une distance comprise entre 0 et 20 % de la longueur de la semelle amortissante 4, la limite avant 13 étant éloignée de l'extrémité avant 6 d'une distance comprise entre 0 et 20 % de la longueur de la semelle amortissante, que la face supérieure 10 présente une rainure longitudinale supérieure 14 qui s'étend depuis une limite arrière 15 jusqu'à une limite avant 16, la limite arrière 15 étant éloignée de l'extrémité arrière 5 d'une distance comprise entre 0 et 20 % de la longueur de la semelle amortissante, la limite avant 16 étant éloignée de l'extrémité avant 6 d'une distance comprise entre 0 et 20 % de la longueur de la semelle amortissante, la rainure longitudinale inférieure 11 s'infléchissant sur une portion comprise entre 80 et 100 % de sa longueur, la rainure longitudinale inférieure 11 présentant un point d'inflexion arrière 17 situé à l'écart de l'extrémité arrière 5 à une distance comprise entre 30 et 60 % de la longueur de la chaussure, la rainure longitudinale inférieure 11 présentant un point d'inflexion avant 18 situé à l'écart de l'extrémité avant 6 à une distance comprise entre 10 et 30 % de la longueur de la chaussure, la rainure longitudinale inférieure 11 déviant du côté médial 8 vers le côté latéral 7 entre la limite arrière 12 et le point d'inflexion arrière 17, la rainure longitudinale inférieure 11 déviant du côté latéral 7 vers le côté médial 8 entre le point d'inflexion arrière 17 et le point d'inflexion avant 18, la rainure longitudinale inférieure 11 déviant du côté médial 8 vers le côté latéral 7 entre le point d'inflexion avant 18 et la limite avant 13, la rainure longitudinale supérieure s'infléchissant sur une portion comprise entre 80 et 100 % de sa longueur, la rainure longitudinale supérieure 14 présentant un point d'inflexion arrière 19 situé à l'écart de l'extrémité arrière 5 à une distance comprise entre 30 et 60 % de la longueur de la chaussure, la rainure longitudinale supérieure 14 présentant un point d'inflexion avant 20 situé à l'écart de l'extrémité avant 6 à une distance comprise entre 10 et 30 % de la longueur de la chaussure, la rainure longitudinale supérieure 14 déviant du côté médial 8 vers le côté latéral 7 entre la limite arrière 15 et le point d'inflexion arrière 19, la rainure longitudinale supérieure 14 déviant du côté latéral 7 vers le côté médial 8 entre le point d'inflexion arrière 19 et le point d'inflexion avant 20, la rainure longitudinale supérieure 14 déviant du côté médial 8 vers le côté latéral 7 entre le point d'inflexion avant 20 et la limite avant 16, la rainure longitudinale inférieure 11 étant en face de la rainure longitudinale supérieure 14. La disposition des rainures longitudinales inférieure 9 et supérieure 14 confère à la semelle amortissante 4 une aptitude à la flexion transversale, selon la totalité ou la quasi-totalité de sa longueur. La flexion transversale est plus marquée au niveau des rainures. Cela permet des transferts d'appuis transversaux, c'est-à-dire un passage d'appuis du côté latéral au côté médial et vice versa.Considering more particularly the figures 2 and 3 , it can be seen that the lower face 9 has a lower longitudinal groove 11 which extends from a rear limit 12 to a front limit 13, the rear limit 12 being remote from the rear end 5 by a distance between 0 and 20% of the length of the damping sole 4, the front limit 13 being away from the front end 6 by a distance of between 0 and 20% of the length of the damping sole, that the upper face 10 has a upper longitudinal groove 14 which extends from a rear limit 15 to a front limit 16, the rear limit 15 being moved away from the rear end 5 by a distance between 0 and 20% of the length of the cushioning sole , the front limit 16 being away from the front end 6 by a distance between 0 and 20% of the length of the damping sole, the lower longitudinal groove 11 bending over a portion between 80 and 100% of its length, groove l lower longitudinal elevation 11 having a rear inflection point 17 located away from the rear extremity 5 at a distance between 30 and 60% of the length of the boot, the lower longitudinal groove 11 having a front inflection point 18 located away from the front end 6 at a distance between 10 and 30% of the length of the boot, the lower longitudinal groove 11 deviating from the medial side 8 to the lateral side 7 between the rear limit 12 and the rear inflection point 17, the lower longitudinal groove 11 deviating from the lateral side 7 to the medial side 8 between the inflection point rear 17 and the front inflection point 18, the lower longitudinal groove 11 deviating from the medial side 8 to the lateral side 7 between the front inflection point 18 and the front limit 13, the upper longitudinal groove flexing over a portion between 80 and 100% of its length, the upper longitudinal groove 14 having a rear inflection point 19 located away from the rear end 5 at a distance between 30 and 60% of the length of the boot, the spoke upper longitudinal groove 14 having a front inflection point 20 located away from the front end 6 at a distance between 10 and 30% of the length of the boot, the upper longitudinal groove 14 deviating from the medial side 8 towards the lateral side 7 between the rear limit 15 and the rear inflection point 19, the upper longitudinal groove 14 deviating from the lateral side 7 towards the medial side 8 between the rear inflection point 19 and the front inflection point 20, the upper longitudinal groove 14 deviating from the medial side 8 to the lateral side 7 between the front inflection point 20 and the front limit 16, the lower longitudinal groove 11 being opposite the upper longitudinal groove 14. The arrangement of the lower longitudinal grooves 9 and upper 14 give the damping sole 4 a transverse flexibility, along all or almost all of its length. The transverse bending is more marked at the level of the grooves. This allows transverse support transfers, that is to say a passage of supports from the lateral side to the medial side and vice versa.

On peut voir encore que la face inférieure 9 présente une première rainure transversale 21 qui s'étend d'une limite latérale 22 à une limite médiale 23, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 15 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 30 % de la longueur de la chaussure, que la face supérieure 10 présente une première rainure transversale 24 qui s'étend d'une limite latérale 25 à une limite médiale 26, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 15 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 30 % de la longueur de la chaussure, et que la première rainure transversale 21 de la face inférieure 9 est en face de la première rainure transversale 24 de la face supérieure 10. Les premières rainures transversales 21, 24 sont en fait situées dans une zone qui correspond aux articulations des orteils. Cela facilite le déroulement de la partie avant du pied.It can also be seen that the lower face 9 has a first transverse groove 21 which extends from a lateral limit 22 to a medial limit 23, between a transverse line situated away from the front end 6 by a distance equal to 15% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 30% of the length of the shoe, that the upper face 10 has a first transverse groove 24 which extends from a lateral limit 25 to a medial limit 26, between a transverse line situated away from the front end 6 by a distance equal to 15% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 30% of the length of the boot, and that the first transverse groove 21 of the lower face 9 is opposite the first transverse groove 24 of the face upper 10. The first transverse grooves 21, 24 are in fact located ées in an area that corresponds to the joints of the toes. This facilitates the unwinding of the front part of the foot.

On peut voir encore que la face inférieure 9 présente une deuxième rainure transversale 27 qui s'étend d'une limite latérale 28 à une limite médiale 29, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 30 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 45 % de la longueur de la chaussure, par le fait que la face supérieure 10 présente une deuxième rainure transversale 30 qui s'étend d'une limite latérale 31 à une limite médiale 32, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 30 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 45 % de la longueur de la chaussure, et par le fait que la deuxième rainure transversale 27 de la face inférieure 9 est en face de la deuxième rainure transversale 30 de la face supérieure 10. Les deuxièmes rainures transversales 27, 30 sont en fait situées dans une zone qui correspond aux articulations entre le métatarse et les orteils. Cela facilite également le déroulement de la partie avant du pied.It can also be seen that the lower face 9 has a second transverse groove 27 which extends from a lateral limit 28 to a medial limit 29, between a transverse line situated away from the front end 6 by a distance equal to 30% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 45% of the length of the shoe, in that the upper face 10 has a second transverse groove 30 which extends from a lateral limit 31 to a medial limit 32, between a transverse line situated away from the front end 6 by a distance equal to 30% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 45% of the length of the shoe, and by the fact that the second transverse groove 27 of the lower face 9 is opposite the second transverse groove 30 of the upper face 10. The second transverse grooves 27, 30 are in fact located in a zone which corresponds to the articulations between the metatarsus and the toes. This also facilitates the unwinding of the front part of the foot.

On peut voir encore que la face inférieure 9 présente une première rainure oblique 33 qui s'étend d'une limite latérale 34 jusqu'à la rainure longitudinale 11, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 35 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 60 % de la longueur de la chaussure, que la face supérieure 10 présente une première rainure oblique 35 qui s'étend d'une limite latérale 36 jusqu'à la rainure longitudinale 14, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 35 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 60 % de la longueur de la chaussure, et que la première rainure oblique 33 de la face inférieure 9 est en face de la première rainure oblique 35 de la face supérieure 10. Les premières rainures obliques 33, 35 sont en fait situées dans une zone latérale d'articulation entre le métatarse et le cuboïde. Cela facilite le déroulement du pied du côté latéral.It can also be seen that the lower face 9 has a first oblique groove 33 which extends from a lateral limit 34 to the longitudinal groove 11, between a transverse line situated away from the front end 6 of a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 60% of the length of the shoe, that the upper face 10 has a first oblique groove 35 which extends from a lateral limit 36 to the longitudinal groove 14, between a transverse line situated away from the front end 6 by a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 60% of the length of the boot, and that the first oblique groove 33 of the lower face 9 is opposite the first oblique groove 35 of the upper face 10. The first oblique grooves 33, 35 are in fact located es in a lateral area of articulation between the metatarsus and the cuboid. This facilitates the unwinding of the foot from the lateral side.

On peut voir encore que la face inférieure 9 présente une deuxième rainure oblique 37 qui s'étend d'une limite latérale 38 à une limite médiale 39, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 35 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 75 % de la longueur de la chaussure, que la face supérieure 10 présente une deuxième rainure oblique 40 qui s'étend d'une limite latérale 41 à une limite médiale 42, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 35 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 75 % de la longueur de la chaussure, et que la deuxième rainure oblique 37 de la face inférieure 9 est en face de la deuxième rainure oblique 40 de la face supérieure 10. Les deuxièmes rainures obliques 37, 40 sont en fait situées dans une zone d'articulation entre le calcanéum et le métatarse. Cela facilite les déformations du pied au niveau du métatarse.It can also be seen that the lower face 9 has a second oblique groove 37 which extends from a lateral limit 38 to a medial limit 39, between a transverse line situated away from the front end 6 by a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe, that the upper face 10 has a second oblique groove 40 which extends from a lateral limit 41 to a medial limit 42, between a transverse line situated away from the front end 6 by a distance equal to 35% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe, and that the second oblique groove 37 of the lower face 9 is opposite the second oblique groove 40 of the face upper 10. The second oblique grooves 37, 40 are in fact located in an area of articulation. ulation between the calcaneus and the metatarsus. This facilitates deformities of the foot at the metatarsal level.

On peut voir encore que la face inférieure 9 présente une troisième rainure oblique 43 qui s'étend d'une limite médiale 44 jusqu'à la deuxième rainure oblique 37, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 50 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 75 % de la longueur de la chaussure, que la face supérieure 10 présente une troisième rainure oblique 45 qui s'étend d'une limite médiale 46 jusqu'à la deuxième rainure oblique 40, entre une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 50 % de la longueur de la chaussure et une ligne transversale située à l'écart de l'extrémité avant 6 d'une distance égale à 75 % de la longueur de la chaussure, et que la troisième rainure oblique 43 de la face inférieure 9 est en face de la troisième rainure oblique 45 de la face supérieure 10. Les troisièmes rainures obliques 43, 45 sont en fait situées dans la zone de la voûte plantaire. Cela facilite les déformations du pied au niveau de sa voûte.It can also be seen that the lower face 9 has a third oblique groove 43 which extends from a medial limit 44 to the second oblique groove 37, between a transverse line situated away from the front end 6 d 'a distance equal to 50% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe, that the upper face 10 has a third oblique groove 45 which extends from a medial limit 46 to the second oblique groove 40, between a transverse line situated away from the front end 6 by a distance equal to 50% of the length of the shoe and a transverse line located away from the front end 6 by a distance equal to 75% of the length of the shoe, and that the third oblique groove 43 of the lower face 9 is opposite the third groove oblique 45 of the upper face 10. The third oblique grooves 43, 45 are in fact located in the area of the arch of the foot. This facilitates deformations of the foot at the level of its arch.

On peut voir encore que la face supérieure 10 présente une rainure longitudinale supplémentaire 47, située entre le côté latéral 7 et la rainure longitudinale 14, et s'étendant entre l'extrémité arrière 5 et la deuxième rainure oblique 40. La rainure longitudinale 47 est en fait située dans une zone de talon du pied. Cela aide le talon du pied à se caler transversalement.It can also be seen that the upper face 10 has an additional longitudinal groove 47, located between the lateral side 7 and the longitudinal groove 14, and extending between the rear end 5 and the second oblique groove 40. The longitudinal groove 47 is actually located in a heel area of the foot. This helps the heel of the foot to wedge crosswise.

On peut voir encore que la face inférieure 9 de la semelle amortissante 4 présente dix plateformes 48 à 57, et que la face supérieure 10 de la semelle amortissante 4 présente onze plateformes 58 à 68. Ces plateformes sont les divisions de la semelle amortissante 4 qui sont délimitées par les rainures. Les plateformes permettent respectivement au pied de trouver des appuis stables localement, notamment pendant un mouvement de déroulement.It can also be seen that the lower face 9 of the damping sole 4 has ten platforms 48 to 57, and that the upper face 10 of the damping sole 4 has eleven platforms 58 to 68. These platforms are the divisions of the damping sole 4 which are delimited by the grooves. The platforms respectively allow the foot to find stable support locally, in particular during an unwinding movement.

En considération surtout de la figure 4, on peut voir encore que l'épaisseur de la semelle amortissante 4, mesurée à mi-chemin entre le côté latéral 7 et le côté médial 8, est comprise entre 1 et 8 mm vers l'extrémité avant 6 et entre 5 et 25 mm vers l'extrémité arrière 5, et que l'épaisseur de la semelle amortissante 4 augmente depuis l'extrémité avant 6 vers l'extrémité arrière 5. Il s'agit là de faire en sorte que le talon du pied soit en légère surélévation par rapport à l'avant du pied. Cela évite fortement, voire totalement, l'apparition de traumatismes au niveau du tendon d'Achile.In particular in consideration of the figure 4 , we can also see that the thickness of the shock-absorbing sole 4, measured halfway between the lateral side 7 and the medial side 8, is between 1 and 8 mm towards the front end 6 and between 5 and 25 mm towards the rear end 5, and that the thickness of the shock absorbing sole 4 increases from the front end 6 towards the rear end 5. This is to ensure that the heel of the foot is slightly raised by compared to the front of the foot. This greatly, if not totally, prevents the appearance of trauma to the Achiles tendon.

On peut voir également que la profondeur des rainures 11, 14, 21, 24, 27, 30, 33, 35, 37, 40, 43, 45, 47 de la semelle amortissante 4 est de plus en plus grande depuis l'extrémité avant 6 vers l'extrémité arrière 5. Cela préserve l'aptitude de la semelle amortissante 4 à fléchir là où elle est plus épaisse, c'est-à-dire vers l'arrière.It can also be seen that the depth of the grooves 11, 14, 21, 24, 27, 30, 33, 35, 37, 40, 43, 45, 47 of the shock absorbing sole 4 is increasingly greater from the front end. 6 towards the rear end 5. This preserves the ability of the cushioning sole 4 to flex where it is thicker, ie towards the rear.

On peut voir encore que les surfaces inférieures des plateformes inférieures 48 à 57 sont contenues dans une surface enveloppe inférieure régulière, et que les surfaces supérieures des plateformes supérieures 58 à 68 sont contenues dans une surface enveloppe supérieure régulière. Il s'agit là de rendre le déroulement du pied pendant un cycle de marche le plus régulier possible.It can also be seen that the lower surfaces of the lower platforms 48 to 57 are contained in a regular lower envelope surface, and that the upper surfaces of the upper platforms 58 to 68 are contained in a regular upper envelope surface. This is to make the course of the foot during a walking cycle as regular as possible.

On constate en complément que la semelle amortissante 4 comprend une lèvre périphérique supérieure 69. Cela facilite la solidarisation ensemble par collage de la tige 3 et de la semelle amortissante 4.In addition, it is noted that the damping sole 4 comprises an upper peripheral lip 69. This facilitates the joining together by gluing of the rod 3 and of the damping sole 4.

On constate enfin que, de manière non limitative, la semelle amortissante 4 est une pièce monobloc. Cela rend la fabrication plus simple et plus rapide. Il peut néanmoins alternativement être prévu que la semelle amortissante soit constituée de plusieurs parties solidarisées les unes aux autres. Ces parties peuvent être toutes faites avec le même matériau ou, alternativement, différents matériaux peuvent être utilisés pour faire différentes parties.Finally, it is noted that, in a nonlimiting manner, the damping sole 4 is a single piece. This makes manufacturing easier and faster. However, alternatively, provision may be made for the shock-absorbing sole to be made up of several parts. united to each other. These parts can all be made with the same material or, alternatively, different materials can be used to make different parts.

Dans tous les cas l'invention est réalisée à partir de matériaux et selon des techniques de mise en œuvre connus de l'homme du métier.In all cases, the invention is made from materials and according to implementation techniques known to those skilled in the art.

Bien entendu l'invention n'est pas limitée à la forme de réalisation ci-avant décrite, et comprend tous les équivalents techniques pouvant entrer dans la portée des revendications qui vont suivre.Of course, the invention is not limited to the embodiment described above, and includes all technical equivalents which may come within the scope of the claims which follow.

En particulier il peut être prévu différentes courbures pour la réalisation des rainures.In particular, different curvatures can be provided for making the grooves.

Claims (14)

  1. Soft shoe (1) comprising an external sole unit (2) and an upper (3), the external sole unit (2) comprising a cushioning sole (4), the cushioning sole (4) extending lengthwise from a rear end (5) as far as a front end (6), widthwise between a lateral side (7) and a medial side (8), and heightwise from a lower face (9) as far as an upper face (10), the lower face (9) having lower grooves (11, 21, 27, 33, 37, 43), the upper face (10) having upper grooves (14, 24, 30, 35, 40, 45, 47), the lower grooves of the lower face (9) being opposite upper grooves of the upper face (10),
    characterized
    in that the lower grooves (11, 21, 27, 33, 37, 43) of the lower face (9) and the upper grooves (14, 24, 30, 35, 40, 45, 47) of the upper face (10) correspond to the main joints of the foot,
    in that the lower grooves of the lower face (9) and the upper grooves of the upper face (10) delimit platforms (48 to 68) of the cushioning sole (4),
    in that the lower face (9) has a lower longitudinal groove (11) which extends from a rear limit (12) as far as a front limit (13), the rear limit (12) being distant from the rear end (5) by a distance comprised between 0 and 20% of the length of the cushioning sole (4), the front limit (13) being distant from the front end (6) by a distance comprised between 0 and 20% of the length of the cushioning sole (4), the lower longitudinal groove (11) curving over a portion comprised between 80 and 100% of its length, the lower longitudinal groove (11) having a rear point of inflection (17) situated distant from the rear end (5) at a distance comprised between 30 and 60% of the length of the shoe, the lower longitudinal groove (11) having a front point of inflection (18) situated distant from the front end (6) at a distance comprised between 10 and 30% of the length of the shoe, the lower longitudinal groove (11) deviating from the medial side (8) towards the lateral side (7) between the rear limit (12) and the rear point of inflection (17), the lower longitudinal groove (11) deviating from the lateral side (7) towards the medial side (8) between the rear point of inflection (17) and the front point of inflection (18), the lower longitudinal groove (11) deviating from the medial side (8) towards the lateral side (7) between the front point of inflection (18) and the front limit (13),
    in that the upper face (10) has an upper longitudinal groove (14) which extends from a rear limit (15) as far as a front limit (16), the rear limit (15) being distant from the rear end (5) by a distance comprised between 0 and 20% of the length of the cushioning sole, the front limit (16) being distant from the front end (6) by a distance comprised between 0 and 20% of the length of the cushioning sole, the upper longitudinal groove (14) curving over a portion comprised between 80 and 100% of its length, the upper longitudinal groove (14) having a rear point of inflection (19) situated distant from the rear end (5) at a distance comprised between 30 and 60% of the length of the shoe, the upper longitudinal groove (14) having a front point of inflection (20) situated distant from the front end (6) at a distance comprised between 10 and 30% of the length of the shoe, the upper longitudinal groove (14) deviating from the medial side (8) towards the lateral side (7) between the rear limit (15) and the rear point of inflection (19), the upper longitudinal groove (14) deviating from the lateral side (7) towards the medial side (8) between the rear point of inflection (19) and the front point of inflection (20), the upper longitudinal groove (14) deviating from the medial side (8) towards the lateral side (7) between the front point of inflection (20) and the front limit (16), and
    in that the lower longitudinal groove (11) is opposite the upper longitudinal groove (14).
  2. Shoe (1) according to Claim 1, characterized in that the lower face (9) has a first transverse groove (21) which extends from a lateral limit (22) to a medial limit (23), between a transverse line situated distant from the front end (6) by a distance equal to 15% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 30% of the length of the shoe, in that the upper face (10) has a first transverse groove (24) which extends from a lateral limit (25) to a medial limit (26), between a transverse line situated distant from the front end (6) by a distance equal to 15% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 30% of the length of the shoe, and in that the first transverse groove (21) of the lower face (9) is opposite the first transverse groove (24) of the upper face (10).
  3. Shoe (1) according to one of the preceding claims, characterized in that the lower face (9) has a second transverse groove (27) which extends from a lateral limit (28) to a medial limit (29), between a transverse line situated distant from the front end (6) by a distance equal to 30% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 45% of the length of the shoe, in that the upper face (10) has a second transverse groove (30) which extends from a lateral limit (31) to a medial limit (32), between a transverse line situated distant from the front end (6) by a distance equal to 30% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 45% of the length of the shoe, and in that the second transverse groove (27) of the lower face (9) is opposite the second transverse groove (30) of the upper face (10).
  4. Shoe (1) according to one of the preceding claims, characterized in that the lower face (9) has a first oblique groove (33) which extends from a lateral limit (34) as far as the longitudinal groove (11), between a transverse line situated distant from the front end (6) by a distance equal to 35% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 60% of the length of the shoe, in that the upper face (10) has a first oblique groove (35) which extends from a lateral limit (36) as far as the longitudinal groove (14), between a transverse line situated distant from the front end (6) by a distance equal to 35% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 60% of the length of the shoe, and in that the first oblique groove (33) of the lower face (9) is opposite the first oblique groove (35) of the upper face (10) .
  5. Shoe (1) according to one of the preceding claims, characterized in that the lower face (9) has a second oblique groove (37) which extends from a lateral limit (38) to a medial limit (39), between a transverse line situated distant from the front end (6) by a distance equal to 35% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 75% of the length of the shoe, in that the upper face (10) has a second oblique groove (40) which extends from a lateral limit (41) to a medial limit (42), between a transverse line situated distant from the front end (6) by a distance equal to 35% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 75% of the length of the shoe, and in that the second oblique groove (37) of the lower face (9) is opposite the second oblique groove (40) of the upper face (10).
  6. Shoe (1) according to one of the preceding claims, characterized in that the lower face (9) has a third oblique groove (43) which extends from a medial limit (44) as far as the second oblique groove (37), between a transverse line situated distant from the front end (6) by a distance equal to 50% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 75% of the length of the shoe, in that the upper face (10) has a third oblique groove (45) which extends from a medial limit (46) as far as the second oblique groove (40), between a transverse line situated distant from the front end (6) by a distance equal to 50% of the length of the shoe and a transverse line situated distant from the front end (6) by a distance equal to 75% of the length of the shoe, and in that the third oblique groove (43) of the lower face (9) is opposite the third oblique groove (45) of the upper face (10) .
  7. Shoe (1) according to one of the preceding claims, characterized in that the upper face (10) has an additional longitudinal groove (47), situated between the lateral side (7) and the longitudinal groove (14), and extending between the rear end (5) and the second oblique groove (40).
  8. Shoe (1) according to the preceding claim, characterized in that the lower face (9) of the cushioning sole (4) has ten platforms (48 to 57), and in that the upper face (10) of the cushioning sole (4) has eleven platforms (58 to 68).
  9. Shoe (1) according to one of the preceding claims, characterized in that the thickness of the cushioning sole (4), measured mid-way between the lateral side (7) and the medial side (8), is comprised between 1 and 8 mm towards the front end (6) and between 5 and 25 mm towards the rear end (5), and in that the thickness of the cushioning sole (4) increases from the front end (6) towards the rear end (5).
  10. Shoe (1) according to one of the preceding claims, characterized in that the depth of the grooves (11, 14, 21, 24, 27, 30, 33, 35, 37, 40, 43, 45, 47) of the cushioning sole (4) increases from the front end (6) towards the rear end (5).
  11. Shoe (1) according to one of the preceding claims, characterized in that the lower surfaces of the lower platforms (48 to 57) are contained within a regular lower envelope surface.
  12. Shoe (1) according to one of the preceding claims, characterized in that the upper surfaces of the upper platforms (58 to 68) are contained within a regular upper envelope surface.
  13. Shoe (1) according to one of the preceding claims, characterized in that the cushioning sole (4) comprises an upper peripheral lip (69).
  14. Shoe (1) according to one of the preceding claims, characterized in that the cushioning sole (4) is a single-piece component.
EP18165704.0A 2017-04-13 2018-04-04 Shoe with improved sole Active EP3387937B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1700408A FR3065152B1 (en) 2017-04-13 2017-04-13 IMPROVED SOLE SHOE

Publications (2)

Publication Number Publication Date
EP3387937A1 EP3387937A1 (en) 2018-10-17
EP3387937B1 true EP3387937B1 (en) 2021-07-21

Family

ID=59296895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18165704.0A Active EP3387937B1 (en) 2017-04-13 2018-04-04 Shoe with improved sole

Country Status (4)

Country Link
US (1) US10813406B2 (en)
EP (1) EP3387937B1 (en)
CN (1) CN108720168B (en)
FR (1) FR3065152B1 (en)

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Also Published As

Publication number Publication date
CN108720168B (en) 2022-03-22
FR3065152A1 (en) 2018-10-19
EP3387937A1 (en) 2018-10-17
US10813406B2 (en) 2020-10-27
US20180295935A1 (en) 2018-10-18
CN108720168A (en) 2018-11-02
FR3065152B1 (en) 2020-01-03

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