EP1785047B1 - Sport shoe with pivotable sole - Google Patents

Sport shoe with pivotable sole Download PDF

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Publication number
EP1785047B1
EP1785047B1 EP20050425804 EP05425804A EP1785047B1 EP 1785047 B1 EP1785047 B1 EP 1785047B1 EP 20050425804 EP20050425804 EP 20050425804 EP 05425804 A EP05425804 A EP 05425804A EP 1785047 B1 EP1785047 B1 EP 1785047B1
Authority
EP
European Patent Office
Prior art keywords
sole
hull
sports shoe
shoe according
foot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20050425804
Other languages
German (de)
French (fr)
Other versions
EP1785047A1 (en
Inventor
Riccardo Perotto
Bertrand Barre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lange International SA
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Lange International SA
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Filing date
Publication date
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Priority to EP20050425804 priority Critical patent/EP1785047B1/en
Priority to DE200560011638 priority patent/DE602005011638D1/en
Publication of EP1785047A1 publication Critical patent/EP1785047A1/en
Application granted granted Critical
Publication of EP1785047B1 publication Critical patent/EP1785047B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0405—Linings, paddings or insertions; Inner boots
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0415—Accessories
    • A43B5/0417—Accessories for soles or associated with soles of ski boots; for ski bindings
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/16—Skating boots
    • A43B5/1641—Skating boots characterised by the sole ; characterised by the attachment of the skate
    • A43B5/1658—Skating boots characterised by the sole ; characterised by the attachment of the skate provided with resilient means in the sole or between the chassis and the sole
    • 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
    • A43B7/1425—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 ball of the foot, i.e. the joint between the first metatarsal and first phalange
    • 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
    • A43B7/1435—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 joint between the fifth phalange and the fifth metatarsal bone
    • 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
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/18—Joint supports, e.g. instep supports
    • A43B7/20—Ankle-joint supports or holders

Definitions

  • the present invention relates to a rigid-shell sports shoe for gliding apparatus, such as the ski or the skate, comprising a physiological sole particularly adapted to the transmission of the user's efforts to the gliding machine for its effective guidance. It is particularly suitable for implementation via the bottom sole of the ski boots shell.
  • the invention also relates to such a sole as such.
  • a sports shoe for gliding device serves as an interface between the body and the gliding device, this interface being responsible for directing the forces in favorable directions so as to pass on rapidly the muscular tension of the athlete with the gliding apparatus in an effective manner to react to the modifications of situations which arise during a descent.
  • the ski boots are based on a rigid stem up to the shin, equipped with a comfort liner to thermally isolate the foot and having both the function of reducing the localized pressures that would be painful and fill the spaces formed between the foot and the shell to reach the maximum holding mentioned above.
  • This bearing structure can be considered as a vault with three arches and three points of support 1, 2, 3, forming a triangle whose vertices are respectively the heel 1, more precisely the posterior tuberosity of the calcaneus, the head of the first metatarsal 2 and the head of the fifth metatarsal 3.
  • the weight of the body is distributed approximately 50% on the heel, 30% on the first metatarsal and 20% on the fifth metatarsal.
  • the top of the vault is constituted by the astragalus on which rests the tibia, the weight transmitted by the tibia dividing into three main forces directed in the directions of the three points of support 1, 2, 3, these forces being transmitted on the one hand by the heel 1 and on the other hand by the scaphoid and the metatarsals at the anterior points of support inside 2 and outside 3.
  • the three support points 1, 2, 3 of the vault plantar transmit the reactions of the soil, through the ski and the shoe, to the leg and the brain.
  • the document CH688636 proposed a new ski boot solution taking into account the previous remarks concerning the structure of the foot.
  • the solution proposed the addition of rigid elements precisely arranged at the three points of support of the foot 1, 2, 3 for a better direct transmission of the forces of the leg on the gliding board through the foot , guaranteeing that there will be no deformation of the sole under the forces undergone at these points of support.
  • the document FR 2,837,072 describes a sports shoe with a sole comprising an area of deformable material.
  • the document EP 0 252 517 discloses a shoe with a sole including side wings. In none of these documents, the shoe can allow guidance by the foot.
  • a general object of the present invention is a sports shoe solution for the transmission of the user's efforts to a gliding machine and the guidance of a gliding device by the foot which does not understand the disadvantages of the solutions of the prior art.
  • a first object of the present invention is a sports shoe for gliding gear which takes into account the foot mechanics to improve the performance of the guidance of the gliding machine.
  • a second object of the present invention is a sports shoe for gliding apparatus which improves the comfort of the user's foot.
  • the invention is based on a sole of a sports shoe which comprises a layer of rigid material, characterized in that it is linked to the shell of a shoe by a zone of deformable material positioned under the rigid material of the sole, this area being located in the region for receiving the head of at least one of the first or fifth metatarsal foot, and in that it comprises at least one side wing.
  • the invention will be illustrated in the context of a ski boot. However, the same concept could be applied to any other sports shoe that participates in guiding a gliding machine. In addition, the concept of the invention will be illustrated by a modification of the bottom shell sole of the shoe. It could however also be implemented through any other sole of the shoe.
  • the first embodiment of the invention illustrated in FIG. figure 2 , based on a particular bottom shell sole whose foot receiving part mainly comprises a layer 11 of relatively rigid material, for example a plastic of a few millimeters thick and 60 shD, forming a thicker central rib 12 for s embedded in the groove 21 of the bottom shell defined by the inner shape of the sole of the shell 15.
  • the sole further comprises zones 13 of deformable material, which may be for example a polyurethane foam or any plastic between 25 and 60 shA, arranged on the lateral parts of the foot, more precisely at the anterior points of support 2, 3 of the foot mentioned above.
  • This sole of the bottom of shell further comprises two lateral wings 14 in the continuity of the rigid layer 11, in the same rigid material, which go up to the level of the articulation between the shell 15 and the collar 16 of the shoe, and are attached to the shoe on the same hinge pin 17 passing through two openings 18 made towards the upper end of the flanges 14.
  • zone 13 'of deformable material is illustrated on the Figures 3 and 4 According to a variant of the first embodiment of the invention In these figures, this zone 13 'has been shown for reasons of clarity of the description of the invention, but they should normally be hidden by the upper layer 11 which cover it up.
  • This form 13 ' is similar to a butterfly whose center of wings corresponds substantially to the two natural support points 2, 3 of the skier's foot.
  • the bottom sole of the shell conforms to the shape of the shell bottom by a central rib 12, present outside the zones 13 'of deformable material, this rib being of rigid material of a shape corresponding to the groove 21 made in the sole of the shell 15.
  • the lateral parts of the sole including those comprising the zone 13 'deformable material conform to the rounded side walls 22 of the shell.
  • FIG. 5 illustrates the upright position in which the skier's entire body is straight and exerts no particularly oriented pressure. This corresponds for example to a situation of descent in a straight line.
  • the figure 6 illustrates a new configuration of the shoe corresponding to a new position of the body of the skier following a flexion of the knees and pressure on the tibia, in order to initiate a turn for example.
  • the foot Following this flexion of the knees, the foot has a natural tendency to rotate and this position thus moves the weight of the skier laterally to the inside of the foot in this example.
  • This induces a weight transmitted precisely on the first metatarsal 2 of the foot on the bottom sole of the shell as illustrated by the arrow F.
  • This force causes a deformation of the deformable zone 13 of the bottom sole of the shell against the hull portion 22 at the location of this force F, allowing the pivoting of the foot.
  • the latter thus performs a slight rotation around a central axis defined in particular by the rib 12.
  • This deformation of the bottom plate of the shell leads for first effect a movement of the foot and a better location of the body effort precisely on the first metatarsal 2 of the foot that thus also participates by its movement in the shoe to the transmission of the effort to the ski, according to its natural mechanics.
  • the deformable portion 13 reduces the hard point felt on the foot and improves the comfort of the shoe. Similarly, one would observe an equivalent phenomenon in case of rotation of the foot to the outside.
  • the bottom sole of the shell also comprises a layer 19 of deformable material at the heel whose function is only to ensure the comfort of the foot on this fulcrum 1 .
  • a strip 20 in a deformable material for example a polyurethane of hardness less than 60 shD, extends over the entire width of the flanges 14 and divides them into two parts.
  • a deformable material for example a polyurethane of hardness less than 60 shD
  • This band 20 provides a spring effect at the wings 14 between the two lower and upper parts of the wing, which thus participates in the transfer of forces on the rod by regulating the share of traction transmitted on the structure itself.
  • FIGS. 7 and 8 illustrate two embodiments of the previous embodiment of the invention in which the kinematics is the same, which differ mainly in the smaller height of the wings 14 and their attachment on lower parts of the hull 15 of the shoe.
  • This connection between the wings and the shoe is an essential element of the invention. It allows a correlation between the phenomenon of guidance by the foot and the transmission of the efforts of the leg of the user.
  • the figure 9 illustrates a second embodiment of the invention wherein the two wings 14 are not symmetrical with respect to the sole 11, the wing corresponding to the inside of the leg extending higher than the other.
  • the connection between these wings 14 and the upper of the shoe differs from the previous embodiments in that the wings 14 are no longer directly attached to the rod.
  • they fulfill their function of transmitting the forces between the sole and the upper of the shoe by their simple support against the wall of the shoe, the intensity of which varies according to the position of the skier.
  • the figure 10 illustrates a third embodiment of the invention, wherein the bottom sole of the shell comprises two parts 33 extending under the rigid sole 31 from the lateral bearing zones of the foot 2, 3 and up to the contact with the ski, through the sole 21 of the hull 15.
  • the deformation of the bottom sole of the hull has a direct effect on the ski and allows a direct transmission of the foot to the ski of the effort caused by the weight of the skier, without using the hull 15 as an intermediate.
  • the wings 34 are similar to those of the previous embodiment.
  • the invention has been illustrated by a modification of the bottom shell sole of the ski boots but it could be applied according to the same concept via any other sole integrated in the shoe, removably or not. In addition, it could be implemented in an equivalent way by the positioning of a deformable material not belonging to the sole but placed between the rigid sole and the shell, possibly attached to the shell.
  • the solution is a combination of elements that achieve the desired result.
  • the rigid material of the sole is necessary for the transmission of the forces exerted by the body of the skier and the maintenance of the foot in the shoe. This maintenance is improved by the wings of the sole, which also allow through their rise in the direction of the collar of the shoe a better transmission of the efforts of the lower leg to the foot and vice versa.
  • the foot itself has a direct guiding effect on the gliding device due to its slight mobility in the shoe made possible by the deformable material.
  • the rigid material may be a plastic material of hardness at least equal to 60 shD, or any other material of equivalent or greater hardness.
  • the deformable material may be of different types, each of these types participating in the guidance of the ski in a particular way.
  • a deformable energy-absorbing material such as a polyurethane foam can be used. Such a choice will absorb some of the effort transmitted by the skier and will be better for beginners, for a guide to the ski, and for use in a straight line as the case of a downhill competition.
  • the deformable material may also be an elastic material such as a rubber, allowing a portion of the transmitted energy to be restored.
  • an elastic material such as a rubber
  • a hyper elastic material could be used, to allow a dynamic restitution energy for a quick and precise change of direction.
  • Any intermediate elastic material could be used.
  • an elastic material of variable characteristics according to its conditions of use can be implemented.
  • a viscoelastic material may be absorbent in case of low speed and elastic loads for high speed stresses. Its use will therefore allow the shoe to behave differently depending on the behavior of the skier.
  • the term "deformable" is therefore used in a very broad sense in this invention, incorporating in particular all the variants mentioned above.
  • plastic materials of hardness less than 60 shD which will have a deformable character compared to the harder rigid material composing the rest of the sole.
  • the common point of all these materials is their possibility of deformation relative to the usual conventional shoes, inducing a primary technical effect consisting of a movement of the foot in the shoe leading to a guide of the ski.
  • the material used for the deformable strip 20 disposed on the flanges 14 of the sole may also vary over a wide range, similar to that described above for the deformable material 13 under the sole.
  • the choices of these two deformable materials will advantageously be coordinated to obtain an optimal complementary combined effect between them.
  • a highly deformable material under the sole may be associated with a highly deformable material on the corresponding wing, to allow maximum pivoting of the sole.
  • the sole may be asymmetrical.
  • the wings can have different lengths, as this has been presented with reference to the figure 9 .
  • only one wing can be provided.
  • the deformable material used may be different in nature on each of the anterior points of support of the foot. Indeed, the support positioned inward, called the first metatarsal 2, is directly concerned when making a turn because it supports a significant pressure to retransmit to the ski. It can therefore be envisaged to use an elastic and relatively rigid deformable material under this support. Regarding the second external support 3, unintentional support at this point may lead to a fault of edge leading to a fall. A more absorbent deformable material could therefore be used on this external support.
  • the concept of the invention therefore covers any combination of deformable materials among those defined above, including the extreme cases of implementation of a deformable material in one of the two front supports 2, 3 of the foot.
  • the concept of the invention therefore makes it possible to implement a multitude of different behaviors of the shoe, and its adaptation quite fine to its desired use.

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

Description

La présente invention concerne une chaussure de sport à coque rigide pour engin de glisse, comme le ski ou le patin, comprenant une semelle physiologique particulièrement adaptée à la transmission des efforts de l'utilisateur à l'engin de glisse pour son guidage efficace. Elle est notamment particulièrement adaptée à une implémentation par l'intermédiaire de la semelle de fond de coque des chaussures de ski. L'invention porte aussi sur une telle semelle en tant que tel.The present invention relates to a rigid-shell sports shoe for gliding apparatus, such as the ski or the skate, comprising a physiological sole particularly adapted to the transmission of the user's efforts to the gliding machine for its effective guidance. It is particularly suitable for implementation via the bottom sole of the ski boots shell. The invention also relates to such a sole as such.

Comme il est connu de l'art antérieur, une chaussure de sport pour engin de glisse sert d'interface entre le corps et l'engin de glisse, cette interface étant chargée de diriger les forces dans des directions favorables de manière à répercuter rapidement la tension musculaire du sportif à l'engin de glisse de manière efficace pour réagir aux modifications de situations qui se présentent lors d'une descente.As is known from the prior art, a sports shoe for gliding device serves as an interface between the body and the gliding device, this interface being responsible for directing the forces in favorable directions so as to pass on rapidly the muscular tension of the athlete with the gliding apparatus in an effective manner to react to the modifications of situations which arise during a descent.

La quasi-totalité des chaussures de ski existantes ont pour principe la tenue maximale du pied et de la cheville du skieur, le guidage du ski se faisant par une flexion sur les genoux et la position de l'ensemble du torse pour modifier le centre de gravité du skieur, le pied et la cheville restant immobiles afin d'induire une transmission passive des efforts du corps à la planche de glisse par la chaussure rigide.Almost all existing ski boots have as their principle the maximum hold of the skier's foot and ankle, the guiding of the ski being done by a flexion on the knees and the position of the whole torso to modify the center of the skier. gravity of the skier, the foot and the ankle remaining immobile in order to induce a passive transmission of the efforts of the body to the gliding board by the rigid shoe.

Dans cette optique, les chaussures de ski sont basées sur une tige rigide remontant jusqu'au tibia, équipée d'un chausson de confort pour isoler thermiquement le pied et ayant à la fois pour fonction de réduire les pressions localisées qui seraient douloureuses et de remplir les espaces formés entre le pied et la coque pour atteindre la tenue maximale mentionnée précédemment. Pour améliorer encore ces solutions, on a proposé de réaliser des chaussons in-situ par injection d'une mousse destinée à remplir le mieux possible les espaces entre le pied et la coque, de manière à se rapprocher le plus possible d'une chaussure épousant parfaitement la morphologie individuelle du pied.In this context, the ski boots are based on a rigid stem up to the shin, equipped with a comfort liner to thermally isolate the foot and having both the function of reducing the localized pressures that would be painful and fill the spaces formed between the foot and the shell to reach the maximum holding mentioned above. To further improve these solutions, we have proposed to make slippers in-situ by injection of a foam designed to fill the best possible spaces between the foot and the hull, so as to get as close as possible to a shoe perfectly matching the individual morphology of the foot.

Toutefois, une solution décrite dans le document CH688636 s'est intéressée à la structure portante très particulière du pied, constitué de nombreux os soudés ou mobiles entre eux. Cette structure portante, illustrée sur la figure 1, peut être considérée comme une voûte à trois arches et trois points d'appui 1, 2, 3, formant un triangle dont les sommets sont respectivement le talon 1, plus précisément la tubérosité postérieure du calcanéum, la tête du premier métatarse 2 et la tête du cinquième métatarse 3. En position normale de repos le poids du corps se répartit à raison d'environ 50% sur le talon, 30% sur le premier métatarse et 20% sur le cinquième métatarse. Le sommet de la voûte est constitué par l'astragale sur lequel s'appuie le tibia, le poids transmis par le tibia se divisant en trois forces principales dirigées dans les directions des trois points d'appui 1, 2, 3, ces forces étant transmises d'une part par le talon 1 et, d'autre part, par le scaphoïde et les métatarses aux points d'appui antérieurs intérieur 2 et extérieur 3. Inversement, les trois points d'appui 1, 2, 3 de la voûte plantaire transmettent les réactions du sol, à travers le ski et la chaussure, à la jambe et au cerveau.However, a solution described in the document CH688636 was interested in the very particular bearing structure of the foot, consisting of many bones welded or mobile between them. This bearing structure, illustrated on the figure 1 , can be considered as a vault with three arches and three points of support 1, 2, 3, forming a triangle whose vertices are respectively the heel 1, more precisely the posterior tuberosity of the calcaneus, the head of the first metatarsal 2 and the head of the fifth metatarsal 3. In the normal resting position the weight of the body is distributed approximately 50% on the heel, 30% on the first metatarsal and 20% on the fifth metatarsal. The top of the vault is constituted by the astragalus on which rests the tibia, the weight transmitted by the tibia dividing into three main forces directed in the directions of the three points of support 1, 2, 3, these forces being transmitted on the one hand by the heel 1 and on the other hand by the scaphoid and the metatarsals at the anterior points of support inside 2 and outside 3. Inversely, the three support points 1, 2, 3 of the vault plantar transmit the reactions of the soil, through the ski and the shoe, to the leg and the brain.

Le document CH688636 a proposé une nouvelle solution de chaussure de ski tenant compte des remarques précédentes concernant la structure du pied. Pour cela, la solution a proposé l'ajout d'éléments rigides précisément disposés au niveau des trois points d'appui du pied 1, 2, 3 pour une meilleure transmission directe des efforts de la jambe sur la planche de glisse à travers le pied, garantissant qu'il n'y aura pas de déformation de la semelle sous les forces subies en ces points d'appui.The document CH688636 proposed a new ski boot solution taking into account the previous remarks concerning the structure of the foot. For this, the solution proposed the addition of rigid elements precisely arranged at the three points of support of the foot 1, 2, 3 for a better direct transmission of the forces of the leg on the gliding board through the foot , guaranteeing that there will be no deformation of the sole under the forces undergone at these points of support.

Toutefois, cette solution conserve la mécanique de l'approche traditionnelle dans laquelle le pied reste immobile et transmet passivement les efforts du corps à la planche de glisse. Les inconvénients de cette approche traditionnelle sont les suivants:

  • la mécanique du pied n'est pas exploitée puisque l'objectif est son maintien immobile et le pied n'a donc aucune fonction directe de guidage de l'engin de glisse, la chaussure se contentant de transmettre les efforts musculaires principalement réalisés au niveau de la jambe de l'utilisateur. Par conséquent, l'efficacité de la chaussure n'est finalement pas optimale pour le guidage d'un engin de glisse ;
  • ces solutions sont douloureuses pour le pied et donc non confortables puisque les efforts du corps s'appliquent intégralement sur les trois points d'appui de la voûte plantaire.
However, this solution retains the mechanics of the traditional approach in which the foot remains motionless and passively transmits the efforts of the body to the gliding board. The disadvantages of this traditional approach are:
  • the mechanics of the foot is not exploited since the objective is its immobile holding and the foot therefore has no direct function of guiding the gliding machine, the shoe merely transmitting the muscular efforts mainly made at the level of the user's leg. Therefore, the effectiveness of the shoe is ultimately not optimal for guiding a gliding machine;
  • these solutions are painful for the foot and therefore not comfortable since the efforts of the body apply integrally on the three points of support of the arch.

En marge de l'approche traditionnelle, il convient de noter une solution décrite dans le document FR2415977 , qui repose sur un pivotement possible du pied au sein de la chaussure autour d'un axe longitudinal partant du talon et partageant le pied sensiblement en deux moitiés. Cette fonction de pivotement est mise en oeuvre par une pièce rapportée dans la chaussure comprenant deux points d'appui au niveau du talon et de l'avant du pied, définissant un axe de pivotement autour duquel elle peut pivoter par rapport au reste de la chaussure et par rapport à l'engin de glisse. L'optique de cette solution originale est de permettre un guidage d'un engin de glisse par le seul mouvement du pied, qui suffit pour entraîner un déplacement du poids exercé sur l'engin de glisse. Les inconvénients de cette solution sont toutefois les suivants :

  • la partie pivotante ajoutée ne correspond pas spécifiquement à la structure du pied explicitée plus haut et n'exploite donc pas la mécanique naturelle du pied. Ainsi, cette solution n'est pas satisfaisante au niveau du confort du pied et entraîne une performance non optimisée ;
  • la partie pivotante se déplace de manière très libre par rapport à la chaussure et le ski et a globalement peu de contact avec ces derniers. Cela entraîne une grande liberté du pied relativement à la chaussure, qui apporte un gain au niveau du guidage du ski par le pied mais qui se fait au détriment ou en remplacement du guidage par le mouvement habituel du reste du corps dont le nouvel équilibre sur le ski devient très instable. Par exemple, une flexion habituelle des genoux entraînant un effort de la jambe sur le collier de la chaussure n'a plus d'effet direct sur le guidage de l'engin de glisse car cet effort n'est plus transmis par la chaussure à l'engin de glisse, la partie pivotante indépendante au niveau du pied représentant une coupure dans la chaîne de transmission de cet effort de la jambe vers l'engin de glisse. La performance globale d'une telle chaussure est finalement très insatisfaisante.
In addition to the traditional approach, it is worth noting a solution described in the document FR2415977 , which is based on a possible pivoting of the foot within the shoe about a longitudinal axis from the heel and dividing the foot substantially into two halves. This pivoting function is implemented by an insert in the shoe comprising two support points at the heel and forefoot, defining a pivot axis around which it can pivot relative to the rest of the shoe and compared to the gliding machine. The optics of this original solution is to allow guidance of a gliding device by the sole movement of the foot, which is sufficient to cause a shift in weight exerted on the gliding machine. The disadvantages of this solution, however, are as follows:
  • the added pivoting part does not correspond specifically to the foot structure explained above and therefore does not exploit the natural mechanics of the foot. Thus, this solution is not satisfactory in terms of foot comfort and results in a non-optimized performance;
  • the pivoting part moves very freely with respect to the shoe and the ski and overall has little contact with them. This results in a great freedom of the foot relative to the shoe, which brings a gain in the guiding of the ski by the foot but which is at the expense or replacement of the guide by the usual movement of the rest of the body whose new balance on the skiing becomes very unstable. For example, a customary bending of the knees causing a force of the leg on the collar of the shoe no longer has a direct effect on the guidance of the gliding device because this effort is no longer transmitted by the shoe to the shoe. gliding apparatus, the independent pivoting portion at the level of the foot representing a cut in the chain of transmission of this force from the leg to the gliding apparatus. The overall performance of such a shoe is ultimately very unsatisfactory.

Le document FR 2 837 072 décrit une chaussure de sport avec une semelle comprenant une zone en matériau déformable. Le document EP 0 252 517 décrit une chaussure avec une semelle comprenant des ailes latérales. Dans aucun de ces documents, la chaussure ne peut permettre un guidage par le pied.The document FR 2,837,072 describes a sports shoe with a sole comprising an area of deformable material. The document EP 0 252 517 discloses a shoe with a sole including side wings. In none of these documents, the shoe can allow guidance by the foot.

Un objet général de la présente invention consiste en une solution pour chaussure de sport pour la transmission des efforts de l'utilisateur à un engin de glisse et le guidage d'un engin de glisse par le pied qui ne comprend pas les inconvénients des solutions de l'art antérieur.A general object of the present invention is a sports shoe solution for the transmission of the user's efforts to a gliding machine and the guidance of a gliding device by the foot which does not understand the disadvantages of the solutions of the prior art.

Plus précisément, un premier objet de la présente invention consiste en une chaussure de sport pour engin de glisse qui prend en compte la mécanique du pied pour améliorer la performance du guidage de l'engin de glisse.More specifically, a first object of the present invention is a sports shoe for gliding gear which takes into account the foot mechanics to improve the performance of the guidance of the gliding machine.

Un second objet de la présente invention consiste en une chaussure de sport pour engin de glisse qui améliore le confort du pied de l'utilisateur.A second object of the present invention is a sports shoe for gliding apparatus which improves the comfort of the user's foot.

L'invention repose sur une semelle de chaussure de sport qui comprend une couche en matériau rigide, caractérisée en ce qu'elle est liée à la coque d'une chaussure par une zone en matériau déformable positionnée sous le matériau rigide de la semelle, cette zone étant localisée dans la région destinée à recevoir la tête d'au moins un des premier ou cinquième métatarse du pied, et en ce qu'elle comprend au moins une aile latérale.The invention is based on a sole of a sports shoe which comprises a layer of rigid material, characterized in that it is linked to the shell of a shoe by a zone of deformable material positioned under the rigid material of the sole, this area being located in the region for receiving the head of at least one of the first or fifth metatarsal foot, and in that it comprises at least one side wing.

L'invention est plus précisément définie par les revendications.The invention is more precisely defined by the claims.

Ces objets, caractéristiques et avantages de la présente invention seront exposés en détail dans la description suivante de modes d'exécution particuliers faits à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 représente un pied et la structure osseuse de la voûte plantaire;
  • la figure 2 est une vue en coupe d'une chaussure équipée d'une semelle de fond de coque selon un premier mode d'exécution de l'invention;
  • la figure 3 est une vue partielle en perspective de la chaussure équipée d'une semelle de fond de coque selon une variante du premier mode d'exécution de l'invention;
  • la figure 4 est une vue en perspective de la semelle de fond de coque selon la variante du premier mode d'exécution de l'invention;
  • les figures 5 et 6 sont des figures en coupe qui représentent schématiquement la cinématique de la chaussure selon l'invention ;
  • les figures 7 et 8 sont des vues schématiques en coupe de deux autres variantes du premier mode d'exécution de l'invention ;
  • la figure 9 est une vue schématique en coupe selon le second mode d'exécution de l'invention ;
  • la figure 10 est une vue schématique en coupe selon le troisième mode d'exécution de l'invention.
These objects, features and advantages of the present invention will be set forth in detail in the following description of particular embodiments given in a non-limiting manner in relation to the appended figures among which:
  • The figure 1 represents a foot and the bony structure of the arch;
  • the figure 2 is a sectional view of a shoe equipped with a bottom shell sole according to a first embodiment of the invention;
  • the figure 3 is a partial perspective view of the shoe equipped with a bottom shell sole according to a variant of the first embodiment of the invention;
  • the figure 4 is a perspective view of the bottom shell sole according to the variant of the first embodiment of the invention;
  • the Figures 5 and 6 are sectional figures which schematically represent the kinematics of the shoe according to the invention;
  • the Figures 7 and 8 are schematic sectional views of two other variants of the first embodiment of the invention;
  • the figure 9 is a schematic sectional view according to the second embodiment of the invention;
  • the figure 10 is a schematic sectional view according to the third embodiment of the invention.

L'invention va être illustrée dans le cadre d'une chaussure de ski. Toutefois, le même concept pourrait être appliqué à toute autre chaussure de sport qui participe au guidage d'un engin de glisse. De plus, le concept de l'invention va être illustré par une modification de la semelle de fond de coque de la chaussure. Il pourrait toutefois aussi être mis en oeuvre par l'intermédiaire de toute autre semelle de la chaussure.The invention will be illustrated in the context of a ski boot. However, the same concept could be applied to any other sports shoe that participates in guiding a gliding machine. In addition, the concept of the invention will be illustrated by a modification of the bottom shell sole of the shoe. It could however also be implemented through any other sole of the shoe.

Le premier mode d'exécution de l'invention, illustré à la figure 2, repose sur une semelle de fond de coque particulière dont la partie recevant le pied comprend principalement une couche 11 en matériau relativement rigide, par exemple un plastique de quelques millimètres d'épaisseur et de 60 shD, formant une nervure centrale plus épaisse 12 pour s'encastrer dans la rainure 21 de fond de coque définie par la forme interne de la semelle de la coque 15. La semelle comprend de plus des zones 13 en matériau déformable, pouvant être par exemple une mousse de polyuréthane ou tout plastique entre 25 et 60 shA, disposées sur les parties latérales du pied, plus précisément au niveau des points d'appui antérieurs 2, 3 du pied mentionnés précédemment. Cette semelle de fond de coque comprend de plus deux ailes latérales 14 dans la continuité de la couche rigide 11, dans le même matériau rigide, qui remontent jusqu'au niveau de l'articulation entre la coque 15 et le collier 16 de la chaussure, et sont fixées à la chaussure sur ce même axe d'articulation 17 traversant deux ouvertures 18 réalisées vers l'extrémité supérieure des ailes 14.The first embodiment of the invention, illustrated in FIG. figure 2 , based on a particular bottom shell sole whose foot receiving part mainly comprises a layer 11 of relatively rigid material, for example a plastic of a few millimeters thick and 60 shD, forming a thicker central rib 12 for s embedded in the groove 21 of the bottom shell defined by the inner shape of the sole of the shell 15. The sole further comprises zones 13 of deformable material, which may be for example a polyurethane foam or any plastic between 25 and 60 shA, arranged on the lateral parts of the foot, more precisely at the anterior points of support 2, 3 of the foot mentioned above. This sole of the bottom of shell further comprises two lateral wings 14 in the continuity of the rigid layer 11, in the same rigid material, which go up to the level of the articulation between the shell 15 and the collar 16 of the shoe, and are attached to the shoe on the same hinge pin 17 passing through two openings 18 made towards the upper end of the flanges 14.

Une forme possible de la zone 13' en matériau déformable est illustrée sur les figures 3 et 4, selon une variante du premier mode d'exécution de l'invention Sur ces figures, cette zone 13' a été représentée pour des raisons de clarté de la description de l'invention, mais elles devraient normalement être cachées par la couche supérieure 11 qui la recouvre. Cette forme 13' s'apparente à un papillon dont le centre des ailes correspond sensiblement aux deux points d'appui naturels 2, 3 du pied du skieur. Dans cette variante de réalisation, la semelle de fond de coque épouse la forme du fond de coque par une nervure centrale 12, présente en dehors des zones 13' en matériau déformable, cette nervure étant en matériau rigide de forme correspondante à la rainure 21 réalisée dans la semelle de la coque 15. Les parties latérales de la semelle dont celles comprenant la zone 13' en matériau déformable épousent les parois latérales arrondies 22 de la coque.A possible form of the zone 13 'of deformable material is illustrated on the Figures 3 and 4 According to a variant of the first embodiment of the invention In these figures, this zone 13 'has been shown for reasons of clarity of the description of the invention, but they should normally be hidden by the upper layer 11 which cover it up. This form 13 'is similar to a butterfly whose center of wings corresponds substantially to the two natural support points 2, 3 of the skier's foot. In this variant embodiment, the bottom sole of the shell conforms to the shape of the shell bottom by a central rib 12, present outside the zones 13 'of deformable material, this rib being of rigid material of a shape corresponding to the groove 21 made in the sole of the shell 15. The lateral parts of the sole including those comprising the zone 13 'deformable material conform to the rounded side walls 22 of the shell.

La cinématique de cette chaussure est maintenant expliquée en référence aux figures 5 et 6. La figure 5 illustre la position droite dans laquelle l'ensemble du corps du skieur est droit et n'exerce aucune pression particulièrement orientée. Cela correspond par exemple à une situation de descente en ligne droite.The kinematics of this shoe is now explained with reference to Figures 5 and 6 . The figure 5 illustrates the upright position in which the skier's entire body is straight and exerts no particularly oriented pressure. This corresponds for example to a situation of descent in a straight line.

La figure 6 illustre une nouvelle configuration de la chaussure correspondant à une nouvelle position du corps du skieur suite à une flexion des genoux et une pression au niveau du tibia, dans le but d'initier un virage par exemple. Suite à cette flexion des genoux, le pied a une tendance naturelle à pivoter et cette position déplace ainsi le poids du skieur latéralement vers l'intérieur du pied dans cet exemple. Cela induit un poids transmis précisément sur le premier métatarse 2 du pied sur la semelle de fond de coque de manière illustrée par la flèche F. Cette force entraîne une déformation de la zone déformable 13 de la semelle de fond de coque contre la partie de coque 22 au niveau de la localisation de cette force F, autorisant le pivotement du pied. Ce dernier effectue donc ainsi une légère rotation autour d'un axe central défini notamment par la nervure 12. Cette déformation de la semelle de fond de coque entraîne pour premier effet un mouvement du pied et une meilleure localisation de l'effort du corps précisément sur le premier métatarse 2 du pied qui participe ainsi aussi par son mouvement dans la chaussure à la transmission de l'effort au ski, selon sa mécanique naturelle. Comme effet secondaire avantageux, la partie déformable 13 permet d'atténuer le point dur ressenti sur le pied et améliore le confort de la chaussure. De manière similaire, on observerait un phénomène équivalent en cas de rotation du pied vers l'extérieur.The figure 6 illustrates a new configuration of the shoe corresponding to a new position of the body of the skier following a flexion of the knees and pressure on the tibia, in order to initiate a turn for example. Following this flexion of the knees, the foot has a natural tendency to rotate and this position thus moves the weight of the skier laterally to the inside of the foot in this example. This induces a weight transmitted precisely on the first metatarsal 2 of the foot on the bottom sole of the shell as illustrated by the arrow F. This force causes a deformation of the deformable zone 13 of the bottom sole of the shell against the hull portion 22 at the location of this force F, allowing the pivoting of the foot. The latter thus performs a slight rotation around a central axis defined in particular by the rib 12. This deformation of the bottom plate of the shell leads for first effect a movement of the foot and a better location of the body effort precisely on the first metatarsal 2 of the foot that thus also participates by its movement in the shoe to the transmission of the effort to the ski, according to its natural mechanics. As an advantageous side effect, the deformable portion 13 reduces the hard point felt on the foot and improves the comfort of the shoe. Similarly, one would observe an equivalent phenomenon in case of rotation of the foot to the outside.

Ensuite, le pivotement de la semelle de fond de coque induit une traction sur l'aile 14 intérieure qui répercute cet effet au niveau de sa liaison avec la tige de la chaussure, favorisant ainsi en retour la flexion de la jambe du skieur. Ainsi, la chaussure permet la mise en oeuvre des effets techniques suivants dans l'ordre chronologique :

  • elle transmet un effort initial d'un utilisateur du collier jusqu'à l'engin de glisse par transmission par les parties rigides de la chaussure, l'effort initial étant réalisé de manière traditionnelle par des flexions des genoux ;
  • cette flexion des genoux induit un mouvement naturel du pied, rendu possible dans la chaussure par la zone déformable sous la semelle, mouvement qui va mieux localiser le poids de l'utilisateur en un point de la chaussure induisant un effet de guidage de l'engin de glisse par le pied ;
  • suite à la déformation de la zone déformable, le positionnement de la semelle est modifié et induit un effort transmis aux ailes de la semelle, qui se répercute sur la coque de la chaussure et qui facilite la continuité de l'effort initial réalisé par l'utilisateur sur la chaussure mentionné ci-dessus.
Then, the pivoting of the bottom sole of the hull induces a traction on the inner flange 14 which echoes this effect at its connection with the upper of the boot, thus favoring back flexion of the skier's leg. Thus, the shoe allows the implementation of the following technical effects in chronological order:
  • it transmits an initial effort from a user of the collar to the gliding device by transmission by the rigid parts of the shoe, the initial effort being made traditionally by flexing the knees;
  • this flexion of the knees induces a natural movement of the foot, made possible in the shoe by the deformable zone under the sole, movement which will better locate the weight of the user at a point of the shoe inducing a guiding effect of the machine sliding by the foot;
  • following the deformation of the deformable zone, the positioning of the sole is modified and induces a force transmitted to the wings of the sole, which is reflected on the shell of the shoe and facilitates the continuity of the initial effort made by the user on the shoe mentioned above.

Selon l'invention, la structure mécanique du pied participe donc au guidage de l'engin de glisse, en complément de la transmission traditionnelle des efforts fournis par les mouvements habituels du corps, et amplifie ainsi l'effet de guidage du skieur sur son ski. En résumé, la chaussure selon l'invention permet d'obtenir un guidage amélioré du ski parce qu'elle remplit les deux fonctions techniques complémentaires suivantes :

  • elle transmet les efforts musculaires exercés par le skieur, notamment au niveau de ses jambes lors des flexions des genoux, jusqu'au ski, grâce à la rigidité d'ensemble de la chaussure, notamment la présence du matériau rigide de la couche supérieure 11 de la semelle et le lien entre cette semelle et le reste de la chaussure par ses ailes 14 ;
  • elle permet un guidage de la chaussure par le pied grâce au matériau déformable 13 judicieusement localisé sous le pied qui permet un léger mouvement du pied.
According to the invention, the mechanical structure of the foot therefore participates in the guidance of the gliding apparatus, in addition to the traditional transmission of the forces provided by the usual movements of the body, and thus amplifies the guiding effect of the skier on his ski. . In summary, the boot according to the invention makes it possible to obtain improved guidance of the ski because it fulfills the following two complementary technical functions:
  • it transmits the muscular efforts exerted by the skier, particularly at the level of his legs during knee flexion, to the ski, thanks to the overall rigidity of the shoe, in particular the presence of the rigid material of the upper layer 11 of the sole and the link between this sole and the rest of the shoe by its wings 14;
  • it allows a guidance of the shoe by the foot thanks to the deformable material 13 judiciously located under the foot which allows a slight movement of the foot.

Selon d'autres aspects avantageux de ce mode d'exécution, la semelle de fond de coque comprend aussi une couche 19 en matériau déformable au niveau du talon dont la fonction est uniquement d'assurer le confort du pied sur ce point d'appui 1.According to other advantageous aspects of this embodiment, the bottom sole of the shell also comprises a layer 19 of deformable material at the heel whose function is only to ensure the comfort of the foot on this fulcrum 1 .

Selon une autre caractéristique optionnelle avantageuse, une bande 20 dans un matériau déformable, par exemple un polyuréthane de dureté inférieure à 60 shD, s'étend sur toute la largeur des ailes 14 et les partage en deux parties. Une telle construction peut être obtenue par un procédé de bi-injection. Cette bande 20 apporte un effet de ressort au niveau des ailes 14 entre les deux parties inférieures et supérieures de l'aile, ce qui participe ainsi au transfert des forces sur la tige en régulant la part de traction transmise sur la structure elle-même. Cette solution permet avantageusement une personnalisation de la chaussure en fonction du comportement souhaité.According to another advantageous optional feature, a strip 20 in a deformable material, for example a polyurethane of hardness less than 60 shD, extends over the entire width of the flanges 14 and divides them into two parts. Such a construction can be obtained by a bi-injection method. This band 20 provides a spring effect at the wings 14 between the two lower and upper parts of the wing, which thus participates in the transfer of forces on the rod by regulating the share of traction transmitted on the structure itself. This solution advantageously allows a personalization of the shoe according to the desired behavior.

Les figures 7 et 8 illustrent deux variantes de réalisation du mode d'exécution précédent de l'invention dans lesquelles la cinématique est la même, qui diffèrent principalement par la plus petite hauteur des ailes 14 et leur accrochage sur des parties inférieures de la coque 15 de la chaussure. Cette liaison entre les ailes et la chaussure est un élément essentiel de l'invention. Elle permet une corrélation entre le phénomène de guidage par le pied et la transmission des efforts de la jambe de l'utilisateur.The Figures 7 and 8 illustrate two embodiments of the previous embodiment of the invention in which the kinematics is the same, which differ mainly in the smaller height of the wings 14 and their attachment on lower parts of the hull 15 of the shoe. This connection between the wings and the shoe is an essential element of the invention. It allows a correlation between the phenomenon of guidance by the foot and the transmission of the efforts of the leg of the user.

La figure 9 illustre un second mode d'exécution de l'invention dans lequel les deux ailes 14 ne sont pas symétriques par rapport à la semelle 11, l'aile correspondant à l'intérieur de la jambe s'étendant plus haut que l'autre. D'autre part, la liaison entre ces ailes 14 et la tige de la chaussure diffère des modes d'exécution précédents en ce que les ailes 14 ne sont plus directement fixées sur la tige. Elles remplissent toutefois leur fonction de transmission des efforts entre la semelle et la tige de la chaussure par leur simple appui contre la paroi de la chaussure, dont l'intensité varie selon la position du skieur.The figure 9 illustrates a second embodiment of the invention wherein the two wings 14 are not symmetrical with respect to the sole 11, the wing corresponding to the inside of the leg extending higher than the other. On the other hand, the connection between these wings 14 and the upper of the shoe differs from the previous embodiments in that the wings 14 are no longer directly attached to the rod. However, they fulfill their function of transmitting the forces between the sole and the upper of the shoe by their simple support against the wall of the shoe, the intensity of which varies according to the position of the skier.

La figure 10 illustre un troisième mode d'exécution de l'invention, dans lequel la semelle de fond de coque comprend deux parties 33 s'étendant sous la semelle rigide 31 depuis les zones d'appui latérales du pied 2, 3 et jusqu'au contact avec le ski, au travers de la semelle 21 de la coque 15. Dans cette variante, la déformation de la semelle de fond de coque exerce un effet direct sur le ski et permet une transmission directe du pied au ski de l'effort provoqué par le poids du skieur, sans utiliser la coque 15 comme intermédiaire. Les ailes 34 sont similaires à celles du mode d'exécution précédent.The figure 10 illustrates a third embodiment of the invention, wherein the bottom sole of the shell comprises two parts 33 extending under the rigid sole 31 from the lateral bearing zones of the foot 2, 3 and up to the contact with the ski, through the sole 21 of the hull 15. In this variant, the deformation of the bottom sole of the hull has a direct effect on the ski and allows a direct transmission of the foot to the ski of the effort caused by the weight of the skier, without using the hull 15 as an intermediate. The wings 34 are similar to those of the previous embodiment.

L'invention a été illustrée par une modification de la semelle de fond de coque des chaussures de ski mais elle pourrait être appliquée selon le même concept par l'intermédiaire de toute autre semelle intégrée à la chaussure, de manière amovible ou pas. De plus, elle pourrait être mise en oeuvre de manière équivalente par le positionnement d'un matériau déformable n'appartenant pas à la semelle mais placé entre la semelle rigide et la coque, éventuellement fixé sur la coque.The invention has been illustrated by a modification of the bottom shell sole of the ski boots but it could be applied according to the same concept via any other sole integrated in the shoe, removably or not. In addition, it could be implemented in an equivalent way by the positioning of a deformable material not belonging to the sole but placed between the rigid sole and the shell, possibly attached to the shell.

Finalement, la solution est une combinaison d'éléments qui permettent d'atteindre le résultat recherché. Le matériau rigide de la semelle est nécessaire pour la transmission des efforts exercés par le corps du skieur et le maintien du pied dans la chaussure. Ce maintien est amélioré par les ailes de la semelle, qui permettent en outre grâce à leur remontée en direction du collier de la chaussure une meilleure transmission des efforts du bas de jambe vers le pied et inversement. Enfin, le pied lui-même a un effet de guidage direct sur l'engin de glisse grâce à sa légère mobilité dans la chaussure rendue possible par le matériau déformable.Finally, the solution is a combination of elements that achieve the desired result. The rigid material of the sole is necessary for the transmission of the forces exerted by the body of the skier and the maintenance of the foot in the shoe. This maintenance is improved by the wings of the sole, which also allow through their rise in the direction of the collar of the shoe a better transmission of the efforts of the lower leg to the foot and vice versa. Finally, the foot itself has a direct guiding effect on the gliding device due to its slight mobility in the shoe made possible by the deformable material.

Les rigidités et propriétés des différents matériaux utilisés peuvent varier selon une large plage, comme cela a été illustré précédemment, sans sortir du concept de l'invention. Comme expliqué précédemment, le matériau rigide pourra être un matériau plastique de dureté au moins égale à 60 shD, ou tout autre matériau de dureté équivalente ou supérieure. Le matériau déformable peut être de différents types, chacun de ces types participant au guidage du ski d'une manière particulière. Par exemple, un matériau déformable amortisseur d'énergie comme une mousse polyuréthane peut être utilisé. Un tel choix permettra d'absorber une partie des efforts transmis par le skieur et conviendra mieux aux débutants, pour un guidage peu précis du ski, et pour une utilisation en relative ligne droite comme le cas d'une descente en compétition. Le matériau déformable peut aussi être un matériau élastique comme un caoutchouc, permettant une restitution d'une partie de l'énergie transmise. Pour une utilisation en compétition en slalom spécial, un matériau hyper élastique pourrait être utilisé, afin de permettre une restitution dynamique de l'énergie pour un changement de direction rapide et précis. Tout matériau élastique intermédiaire pourrait être utilisé. Enfin, un matériau élastique de caractéristiques variables en fonction de ses conditions d'utilisation peut être implémenté. Par exemple, un matériau viscoélastique pourra être absorbant en cas de sollicitations à faible vitesse et élastique pour les sollicitations à grande vitesse. Son utilisation permettra donc à la chaussure de se comporter différemment en fonction du comportement du skieur. Le terme "déformable" est donc utilisé dans un sens très large dans cette invention, intégrant notamment toutes les variantes mentionnées ci-dessus. II inclut aussi des matériaux plastiques de dureté inférieure à 60 shD, qui auront un caractère déformable par rapport au matériau rigide plus dur composant le reste de la semelle. Le point commun de tous ces matériaux est leur possibilité de déformation relativement aux chaussures habituelles classiques, induisant un effet technique premier consistant en un mouvement du pied dans la chaussure conduisant à un guidage du ski. Ces matériaux seront ainsi choisis de manière adaptée à l'utilisation souhaitée de la chaussure, selon le large choix mentionné ci-dessus.The rigidities and properties of the different materials used may vary over a wide range, as has been illustrated above, without departing from the concept of the invention. As explained above, the rigid material may be a plastic material of hardness at least equal to 60 shD, or any other material of equivalent or greater hardness. The deformable material may be of different types, each of these types participating in the guidance of the ski in a particular way. For example, a deformable energy-absorbing material such as a polyurethane foam can be used. Such a choice will absorb some of the effort transmitted by the skier and will be better for beginners, for a guide to the ski, and for use in a straight line as the case of a downhill competition. The deformable material may also be an elastic material such as a rubber, allowing a portion of the transmitted energy to be restored. For use in competition in special slalom, a hyper elastic material could be used, to allow a dynamic restitution energy for a quick and precise change of direction. Any intermediate elastic material could be used. Finally, an elastic material of variable characteristics according to its conditions of use can be implemented. For example, a viscoelastic material may be absorbent in case of low speed and elastic loads for high speed stresses. Its use will therefore allow the shoe to behave differently depending on the behavior of the skier. The term "deformable" is therefore used in a very broad sense in this invention, incorporating in particular all the variants mentioned above. It also includes plastic materials of hardness less than 60 shD, which will have a deformable character compared to the harder rigid material composing the rest of the sole. The common point of all these materials is their possibility of deformation relative to the usual conventional shoes, inducing a primary technical effect consisting of a movement of the foot in the shoe leading to a guide of the ski. These materials will thus be chosen in a manner adapted to the desired use of the shoe, according to the wide choice mentioned above.

De même, le matériau utilisé pour la bande déformable 20 disposée sur les ailes 14 de la semelle peut aussi varier selon une large plage, similaire à celle décrite ci-dessus pour le matériau déformable 13 sous la semelle. Les choix de ces deux matériaux déformables seront avantageusement coordonnés pour obtenir un effet combiné complémentaire optimal entre eux. Par exemple, un matériau très déformable sous la semelle pourra être associé à un matériau très déformable sur l'aile correspondante, pour permettre le pivotement maximal de la semelle.Similarly, the material used for the deformable strip 20 disposed on the flanges 14 of the sole may also vary over a wide range, similar to that described above for the deformable material 13 under the sole. The choices of these two deformable materials will advantageously be coordinated to obtain an optimal complementary combined effect between them. For example, a highly deformable material under the sole may be associated with a highly deformable material on the corresponding wing, to allow maximum pivoting of the sole.

Enfin, selon une autre possibilité de l'invention, la semelle peut être dissymétrique. Les ailes peuvent avoir des longueurs différentes, comme cela a été présenté en référence à la figure 9. Eventuellement, une seule aile peut être prévue. De plus, le matériau déformable utilisé peut être de nature différente sur chacun des points d'appui antérieurs du pied. En effet, l'appui positionné vers l'intérieur, appelé premier métatarse 2, est directement concerné lors de la réalisation d'un virage puisqu'il supporte une pression importante à retransmettre au ski. Il peut donc être envisagé d'utiliser un matériau déformable élastique et relativement rigide sous cet appui. Concernant le second appui extérieur 3, un appui involontaire en ce point risque d'entraîner une faute de carre conduisant à une chute. Un matériau déformable plus absorbant pourrait donc être utilisé sur cet appui extérieur. En fait, le concept de l'invention couvre donc toute combinaison de matériaux déformables parmi ceux définis ci-dessus, incluant les cas extrêmes d'implémentation d'un matériau déformable sous un seul des deux appuis antérieurs 2, 3 du pied. Le concept de l'invention permet donc de mettre en oeuvre une multitude de comportements différents de la chaussure, et son adaptation assez fine à son utilisation souhaitée.Finally, according to another possibility of the invention, the sole may be asymmetrical. The wings can have different lengths, as this has been presented with reference to the figure 9 . Optionally, only one wing can be provided. In addition, the deformable material used may be different in nature on each of the anterior points of support of the foot. Indeed, the support positioned inward, called the first metatarsal 2, is directly concerned when making a turn because it supports a significant pressure to retransmit to the ski. It can therefore be envisaged to use an elastic and relatively rigid deformable material under this support. Regarding the second external support 3, unintentional support at this point may lead to a fault of edge leading to a fall. A more absorbent deformable material could therefore be used on this external support. In fact, the concept of the invention therefore covers any combination of deformable materials among those defined above, including the extreme cases of implementation of a deformable material in one of the two front supports 2, 3 of the foot. The concept of the invention therefore makes it possible to implement a multitude of different behaviors of the shoe, and its adaptation quite fine to its desired use.

Claims (15)

  1. Sports shoe for use with sliding gear, having a hull (15), a collar (16) and a sole that comprises a layer of a rigid material (11, 31), the shoe including a region (13, 13', 33) consisting of a deformable material positioned between the rigid material (11, 31) of the sole and the hull (15) and situated in the area that is assigned for receiving the head of at least one of the first or fifth metatarsal bone (2, 3) of the foot, characterised in that the sole comprises at least one lateral wing (14), said wing being fastened to the hull (15) and/or elevated at least up to the level of the articulation between the hull (15) and the collar (16).
  2. Sports shoe according to claim 1, characterised in that the sole comprises two asymmetric wings (14) that are not directly fastened to the leg of the shoe, the wing that corresponds to the interior of the leg extending further than the other wing.
  3. Sports shoe according to claim 1, characterised in that at least one wing (14) of the sole is fastened to the remainder of the shoe through the connecting axis (17) of the hull (15) to the collar (16).
  4. Sports shoe according to any one of the preceding claims, characterised in that the rigid material has a hardness equal to or exceeding 60 ShD.
  5. Sports shoe according to any one of the preceding claims, characterised in that the region (13, 13', 33) consisting of a deformable material is situated under the layer of the rigid material (11) of the sole, and bears upon the lateral rounded portion (22) of the hull (15).
  6. Sports shoe according to any one of the preceding claims, characterised in that the region (13, 13', 33) consisting of a deformable material comprises an absorbing material such as a foam.
  7. Sports shoe according to any one of claims 1 to 5, characterised in that the region (13, 13', 33) consisting of a deformable material comprises a resilient material such as a rubber, a hyperelastic material or any other material of intermediate elasticity.
  8. Sports shoe according to any one of claims 1 to 5, characterised in that the region (13, 13', 33) consisting of a deformable material comprises a visco-elastic material.
  9. Sports shoe according to any one of claims 1 to 5, characterised in that the region (13, 13', 33) consisting of a deformable material comprises a plastic material whose hardness is lower than 60 ShD.
  10. Sports shoe according to any one of the preceding claims, characterised in that at least one wing (14) is separated into two parts by a deformable ribbon (20) extending on its whole width.
  11. Sports shoe according to any one of the preceding claims, characterised in that the deformable material (33) extends under the sole (21) of the hull (15) in such a manner that it is able to come in direct contact with the sliding gear.
  12. Sports shoe according to any one of the preceding claims, characterised in that the sole is the sole of the bottom of the hull.
  13. Sports shoe according to any one of the preceding claims, characterised in that the region (13, 13', 33) consisting of a deformable material appertains to the sole.
  14. Sports shoe according to any one of the preceding claims, characterised in that the region (13, 13', 33) consisting of a deformable material is fastened to the hull (15).
  15. Hull bottom sole for ski boot, comprising a layer (11, 31) of a rigid material and a region (13, 13', 33) consisting of a deformable material situated in the area that is assigned for receiving the head of at least one of the first or fifth metatarsal bone (2, 3) of the foot, characterised in that it comprises at least one lateral wing (14), said wing being adapted for fastening to the hull and/or elevated at least up to the level of the articulation between the hull (15) and the collar (16).
EP20050425804 2005-11-15 2005-11-15 Sport shoe with pivotable sole Expired - Fee Related EP1785047B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20050425804 EP1785047B1 (en) 2005-11-15 2005-11-15 Sport shoe with pivotable sole
DE200560011638 DE602005011638D1 (en) 2005-11-15 2005-11-15 Sports shoe with swivel sole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050425804 EP1785047B1 (en) 2005-11-15 2005-11-15 Sport shoe with pivotable sole

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EP1785047A1 EP1785047A1 (en) 2007-05-16
EP1785047B1 true EP1785047B1 (en) 2008-12-10

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2305055B1 (en) * 2009-10-05 2015-02-11 Rossignol Lange S.R.L. Series of ski boots with one ski boot at least containing a clog
CN101884447A (en) * 2010-07-28 2010-11-17 安踏（中国）有限公司 Sole of sport shoe and sport shoe employing sole
IT1403822B1 (en) * 2011-01-20 2013-10-31 Head Technology Gmbh STRUCTURE OF INSOLE FOR SPORTS SHOES
NL1038548C2 (en) * 2011-01-26 2012-07-30 Marinus Jacobus Vervoort METHOD FOR RECYCLING ENERGY DURING MOVEMENT.
ITMI20112065A1 (en) * 2011-11-14 2013-05-15 Cabra Engineering S R L DEVICE FOR THE OPTIMIZATION OF THE CONTROL OF THE STRUCTURE OF THE SKIER AND SKI BOOTS EQUIPPED WITH THE SAFETY DEVICE
US9326563B2 (en) * 2012-10-26 2016-05-03 K-2 Corporation Base for a ski boot and ski boot incorporating such a base

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074446A (en) * 1976-06-18 1978-02-21 Joel Howard Eisenberg Ski boot
US4144659A (en) 1978-02-06 1979-03-20 Eisenberg Joel Howard Ski boot
IT1196954B (en) * 1986-07-10 1988-11-25 Calzaturificio Tecnica Spa FOOT LOCKING STRUCTURE FOR SHOES AND BOOTS
FR2663821B1 (en) * 1990-06-27 1994-01-21 Salomon Sa SKI BOOT WITH RIGID SHELL AND SHOCK ABSORBER.
IT1259095B (en) * 1992-05-06 1996-03-11 Calzaturificio Tecnica Spa BIOMECHANICAL SKI BOOT
CH688636A5 (en) 1993-06-30 1997-12-31 Lange Int Sa Ski boot
FR2837072B1 (en) * 2002-03-18 2004-09-17 Rossignol Sa SKI BOOT
ITMI20030933A1 (en) * 2003-05-09 2004-11-10 Htm Sport Spa WEDGE STRUCTURE, ESPECIALLY FOR SPORTS FOOTWEAR

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EP1785047A1 (en) 2007-05-16

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