EP0787441B1 - Sport shoe - Google Patents

Sport shoe Download PDF

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Publication number
EP0787441B1
EP0787441B1 EP96119600A EP96119600A EP0787441B1 EP 0787441 B1 EP0787441 B1 EP 0787441B1 EP 96119600 A EP96119600 A EP 96119600A EP 96119600 A EP96119600 A EP 96119600A EP 0787441 B1 EP0787441 B1 EP 0787441B1
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EP
European Patent Office
Prior art keywords
stiffener
boot
boot according
rigid
buttress
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 - Lifetime
Application number
EP96119600A
Other languages
German (de)
French (fr)
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EP0787441A1 (en
Inventor
Thierry Donnadieu
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.)
Salomon SAS
Original Assignee
Salomon SAS
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Publication date
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Application filed by Salomon SAS filed Critical Salomon SAS
Priority to EP01121908A priority Critical patent/EP1166668B1/en
Publication of EP0787441A1 publication Critical patent/EP0787441A1/en
Application granted granted Critical
Publication of EP0787441B1 publication Critical patent/EP0787441B1/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • A43B5/0486—Ski or like boots characterized by the material
    • A43B5/049—Ski or like boots characterized by the material with an upper made of composite material, e.g. fibers or core embedded in a matrix
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
    • A43B23/17—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics
    • 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
    • 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
    • A43B5/0492—Telemark 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
    • A43B5/0496—Ski or like boots boots for touring or hiking skis

Definitions

  • the present invention relates to a shoe intended for sports requiring a movement of the foot, such as for example snowshoeing, cross-country skiing, classic or skateboarding style, telemark skiing and hiking, and / or sliding sports such as snowboarding, ice skating and roller skating, namely sports requiring good transmission of the forces exerted by the foot for better grip, edge grip.
  • a shoe intended for the abovementioned sports must satisfy different requirements and incompatible, which at first sight cannot be achieved without harming at least one of the aspects above.
  • the present invention therefore aims to provide a shoe of improved design which remedies to the disadvantages encountered in the prior art and which reconciles conflicting requirements, to improve the behavior heel while allowing the natural course of the foot, and being simple and inexpensive construction.
  • the central idea of the present invention is to improve the holding of the heel of the foot by providing, at this level, a buttress, which is rigid and substantially non-flexible. It is then the stiffness of the buttress which allows at the same time, satisfactory heel hold and transmission of forces. Furthermore, this construction allows a flexibility of the outer sole in the so-called metatarsophalangeal area and a more natural course of the foot.
  • the rigid buttress extends over at least one side of the shoe substantially up to the so-called metatarsophalangeal flexion zone. It results from the strengthening of the rear part of the shoe, satisfactory transmission of forces from the user's leg to the front part of the foot, which is in permanent contact with the ground or the sliding support.
  • the rigid buttress and essentially the rear part of the base of the foot surrounds the heel like a shell.
  • This construction also allows better transmission of forces, especially in transverse direction, thanks to the reinforcement and the shell shape of the rear part of the shoe, while retaining flexibility of the shoe in the metatarsophalangeal area.
  • Said constructions allow better control of the ski by holding the heel and at the same time a gain general energy and direct transmission of forces by canceling parasitic deformations of the sole and the shoe, which parasitic deformations are useless for propulsion by typical movements of the above sports.
  • FIGS. 1 and 2 is shown a shoe 1 intended for the practice of cross-country skiing, particularly for the skateboard style.
  • the present invention also applies to all sports requiring a unfolding of the foot, such as snowshoeing, cross-country skiing, telemark skiing and hiking, and / or board sports such as snowboarding, ice skating, roller skating, ... etc.
  • the following description is made with reference to a ski boot background.
  • the shoe 1 shown comprises, in a known manner, a upper 2, an outer sole 5 and an articulated collar 8, which is fixed to the rod via a hinge pin 7.
  • a shoe upper for cross-country skiing is well known in the art and will not be explained in detail in the description.
  • the shoe 1 shown in Figures 1 and 2 is provided with a first rear buttress 13, in a material which is flexible enough to allow attachment by stitching of this flexible buttress 13 on the rod 2.
  • the shoe 1 also has a second buttress 3, which is more rigid as the flexible buttress 13, and is in fact substantially non-flexible.
  • This rigid buttress 3 surrounds the heel 11 of the shoe 1 by two walls, respectively lateral 9 and medial 10, and by a rear wall at the heel 11.
  • lateral wall respectively median, is meant each of the walls of said buttress disposed respectively towards the outside and towards the inside of the foot or shoe.
  • the rigid buttress extends forward substantially up to zone 4 of flexion known as metatarsophalangeal.
  • the reinforcement of the shoe 1 via the rigid buttress 3 is therefore limited to a zone between the heel 11 and said zone 4 of metatarsophalangeal flexion.
  • the foot of the user is therefore well held on the side of the heel 11, while keeping the shoe 1 flexible in the metatarsophalangeal flexion zone 4, which allows an almost natural unfolding of the foot.
  • the rigid buttress 3 has a maximum height which does not exceed that of the region located substantially below the ankle area 6, and is notably lower than the level of said zoned.
  • the rigid buttress 3 rises substantially to the level of the zone of articulation of the ankle and comprises the axis of articulation 7 of the articulated collar 8.
  • the maximum height of the buttress 3 is on the contrary lower than the level of the hinge pin 7 which is therefore fixed only on the first flexible buttress 13, which allows more freedom in transverse direction at the level of the collar because of the greater flexibility of the material.
  • the maximum height of the buttress 3 is chosen so that the movement natural ankle 6 is not hindered.
  • each of the walls 9, 10 decreases in height going towards the front of the buttress 2.
  • each wall 9, 10 joins the edge 21 upper of the outer sole 3.
  • the side wall 9 decreases in a substantially continuous manner at an angle of approximately 45 ° with the upper edge 21 of the outsole.
  • the medial wall 10 can have the same shape.
  • the side wall 9, as well as the medial wall 10 decreases also towards the rear, heel zone 11, for better comfort of the foot.
  • the buttress 2 can form a stop 22 for the support of an elastic loop 14 which surrounds the rear of the ankle 6 in the manner of a spur which provides an elastic return to the collar.
  • This loop 14 is also known and does not constitute an essential element of the present invention. It is for this reason that the loop 14 will not be described in detail.
  • the buttress 3 which can make it impossible to fix the buttress 3 rigid directly on the fabric and / or leather of the upper 2, it may be advantageous to fix the buttress 3 rigid, for example by gluing and / or riveting, on the flexible buttress 13, which has a sufficient flexibility allowing its connection, for example by gluing, stitching and / or riveting on the rod 2.
  • the flexible buttress 13 also allows a certain padding of the rigid buttress 3, which avoids local pressures on the user's foot.
  • the rigid buttress 3 covers the flexible buttress 13 only partially, leaving uncovered an edge 23, which extends at least over the upper edge 24 of the side wall of the buttress 3 rigid, so as to facilitate its fixing or connection to the rod.
  • the preferred materials of the rigid buttress 3 are plastics which can be reinforced with fibers, for example glass or carbon, and metallic materials. Of in any case, all the materials are adapted, essentially guaranteeing almost non flexibility of the stiff buttress 3.
  • the preferred stiffness of the rigid buttress is between 260 MPa (Mega Pascal) which corresponds to the Modulus of elasticity Pebax 6333, and 200 GPa (Giga Pascal) this which corresponds to the Modulus of elasticity of a glass fiber + carbon composite.
  • the outer sole according to the embodiment shown in Figure 2 consists in two parts, a front part 15 and a rear part 16.
  • the front part 15 extends essentially from the front end 24 of shoe 1 to zone 4 of metatarsophalangeal flexion.
  • This front part is flexible enough to allow almost bending natural in said zone 4 of flexion.
  • the rear part 16 of the external sole and the rigid buttress 3 form a one-piece assembly and preferably single material.
  • This construction has advantages with regard to the mounting the rear part 16 of the sole and the rigid buttress 3 in one piece on the rod 2, the tightness of the rear lower part of the shoe 1, particularly in the area which traditionally represents the connection between the outer sole and the buttress, and also in with regard to a further improved reinforcement, compared to the embodiment described in reference to FIG. 1, of the rear part and the heel of shoe 2.
  • the rigid buttress 3 shown in FIG. 3 has the shape of a shell of cross section in "U” shaped and completely surrounding the heel, namely laterally, at the back as well as below, and at a maximum height well below the level of the ankle area 6.
  • the height preferred is between about 2 cm and 4 cm.
  • the embodiment according to FIG. 2, namely the monobloc construction of the rear part of the outer sole with the rigid buttress 3, is symbolized by dotted lines.
  • the rigid buttress 3 shown in FIG. 3 completely covers the base of the foot.
  • the buttress 3 might as well cover the base portion of the foot only partially, for example by forming a hollow or one or more recesses in the base part 17 of the rigid buttress 3.
  • the construction of the rigid buttress 3 according to the example shown in Figure 3 allows an entourage of the heel and the rear part of the base of the foot in the manner of a shell.
  • the lateral wall 9 and / or the medial wall 10 of the buttress 3 rigid may be provided with recesses 18, which allows a reduction in the weight of the buttress 3 rigid while keeping its rigidity.
  • the rigid buttress 3 without bottom 17 and provided with flanges 19 extends from the lower edges respectively of the side wall 9 and of the wall 10 medial, horizontally inward.
  • These transverse flanges 19 serve for fixing the buttress by intercalation between a first assembly of the rod 2 and the outer sole.
  • these transverse flanges 19 participate in the stiffening of the rigid buttress 3, in particular in torsion.
  • these transverse flanges 19 can be provided fairly wide so that that they almost meet leaving only one gap between them.
  • the side wall 9 of the rigid buttress 3, in the example shown in the figures, can extend further in the longitudinal direction than the medial wall, respecting the orientation of the natural flexion line in the metatarsophalangeal zone 4, which forms an acute angle with the axis longitudinal of a foot.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Golf Clubs (AREA)

Abstract

The boot consists of a sole (5) and an upper (2) equipped with a rigid stiffener (3) which passes round the heel and extends along at least one side of the boot as far as the metatarsal-phalangeal flexure zone and upwards to a point just below the ankle or the pivot point (7) of a flexible upper collar (8). The stiffener can extend further along one side of the boot than the other and be lower at the heel than at its highest side point. It can also be made in one piece with the rear part of the sole and be fastened to the boot via a flexible element (13) covering the same area. The preferred materials for the stiffener are, for example, plastics reinforced by glass or carbon fibres, or metals, having a rigidity of 260 MPa to 200 GPa.

Description

La présente invention concerne une chaussure destinée à des sports exigeant un déroulement du pied, comme par exemple la raquette à neige, le ski de fond, style classique ou skate, le ski télémark et la randonnée, et/ou des sports de glisse comme par exemple le snowboard, le patin à glace et le patin à roulettes, à savoir des sports nécessitant une bonne transmission des efforts exercés par le pied pour une meilleure accroche, prise de carre.The present invention relates to a shoe intended for sports requiring a movement of the foot, such as for example snowshoeing, cross-country skiing, classic or skateboarding style, telemark skiing and hiking, and / or sliding sports such as snowboarding, ice skating and roller skating, namely sports requiring good transmission of the forces exerted by the foot for better grip, edge grip.

Dans tout les sports susmentionnés, il est nécessaire de transmettre les efforts provenant de la jambe de l'utilisateur par l'intermédiaire de la cheville, du pied à la zone de contact de la chaussure avec le sol ou un support de glisse. Ladite zone de contact, qui est localisée dans une zone dite métatarso-phalangienne, en pratiquant l'un quelconque des sports susmentionnés, doit rester constamment en contact avec le support et/ou le sol, même lorsque l'utilisateur soulève le talon d'un pied pour pratiquer une foulée, et/ou pour pratiquer un déplacement du centre de gravité par rapport à la direction du support de glisse. Il en résulte que, pendant le soulèvement, la partie du pied et de la chaussure située derrière la zone métatarso-phalangienne forme un angle avec la partie de la chaussure situé devant ladite zone. Ledit angle se traduit en une flexion du pied de l'utilisateur, et par conséquence de la chaussure, dans ladite zone métatarso-phalangienne.In all the aforementioned sports, it is necessary to transmit the efforts coming from the leg of the user via the ankle, from the foot to the area of contact of the shoe with the ground or a sliding support. Said contact zone, which is located in a so-called metatarsophalangeal zone, in practicing any of the above-mentioned sports, must remain constantly in contact with the support and / or the ground, even when the user raises the heel of a foot to practice a stride, and / or to practice a displacement of the center of gravity relative to the direction of the sliding support. As a result, during the uplift, the part of the foot and the shoe behind the metatarsophalangeal area forms an angle with the part of the shoe located in front of said zone. Said angle results in a flexion of the foot of the user, and consequently of the shoe, in said metatarsophalangeal zone.

Il est donc à noter, qu'une chaussure destinée aux sports susmentionnés, doit, comme première condition, satisfaire à l'exigence d'une flexibilité suffisante dans la zone métatarso-phalangienne permettant un déroulement aussi naturel que possible.It should therefore be noted that a shoe intended for the above-mentioned sports must, as a first condition, meet the requirement of sufficient flexibility in the metatarsophalangeal area allowing an unfolding as natural as possible.

La transmission des efforts provenant de la jambe de l'utilisateur à la zone métatarso-phalangienne, qui représente la zone d'impulsion du pied par rapport au sol et/ou support, représente la deuxième condition à satisfaire par une chaussure destinée aux sports susmentionnés. Pour éviter des pertes d'effort par amortissement et déformation parasite, il est indispensable de rigidifier la structure de base de la chaussure.Transmission of forces from the user's leg to the metatarsophalangeal area, which represents the pulse area of the foot relative to the ground and / or support, represents the second condition to satisfy with a shoe intended for the aforementioned sports. To avoid loss of effort by amortization and parasitic deformation, it is essential to stiffen the basic structure of the shoe.

En outre, il est important d'éviter tout mouvement du pied par rapport à la chaussure. Il en résulte notamment la condition d'une tenue satisfaisante du talon à l'intérieur de cette chaussure.In addition, it is important to avoid movement of the foot in relation to the shoe. This results in particular the condition of a satisfactory heel hold inside this shoe.

Pour résumer, une chaussure destinée aux sports susmentionnée doit satisfaire à des exigences différentes et incompatibles, ce qui à première vue, n'est pas réalisable sans porter préjudice à au moins l'un des aspects susmentionnés.To sum up, a shoe intended for the abovementioned sports must satisfy different requirements and incompatible, which at first sight cannot be achieved without harming at least one of the aspects above.

C'est pour cela que jusqu'à présent on a essayé de nombreuses approches en vue de résoudre ce problème. Par exemple, il est connu de pourvoir une chaussure de ski de fond, d'une semelle sensiblement non flexible. Évidemment, il en résulte le problème, qu'un déroulement naturel du pied n'est plus réalisable, étant donné que la semelle s'oppose au mouvement naturel de flexion dans la zone métatarso-phalangienne.This is why so far we have tried many approaches to solve this problem. Through example, it is known to provide a cross-country ski boot with a substantially non-flexible sole. Obviously, this results in the problem that a natural course of the foot is no longer achievable, since the sole opposes the natural flexing movement in the metatarsophalangeal area.

Il est également connu de réaliser des chaussures de ski de fond à la manière des chaussures de ski alpin, c'est-à-dire par moulage d'éléments plastiques. Un exemple de telles chaussures est fourni dans le document US 3 807 062. Cependant, de telles chaussures limitent les mouvements du pied et n'assurent pas un très bon confort de celui-ci.It is also known to produce cross-country ski boots in the manner of alpine ski boots, that is to say by molding of plastic elements. An example of such shoes is provided in the document US 3 807 062. However, such shoes limit the movements of the foot and do not provide a very good comfort of it.

Le document US 4 287 675 décrit une chaussure d'athlétisme à tige cousue qui est munie d'un contrefort entourant le talon pour limiter la pronation. Ce contrefort ne s'étend que jusqu'au cou-de-pied du porteur de la chaussure et n'est pas destiné à transmettre d'effort en position fléchie du pied.Document US 4,287,675 describes an athletic shoe with a sewn upper which is provided with a buttress. surrounding the heel to limit pronation. This buttress extends only to the instep of the wearer of the shoe and is not intended to transmit force in the flexed position of the foot.

Une autre approche, connue par exemple du document IT 195 621 consiste dans la disposition d'un bord remontant de la semelle externe, qui entoure toute la chaussure. Another approach, known for example from document IT 195 621, consists in the arrangement of an edge rising from the outer sole, which surrounds the entire shoe.

Cependant, cette construction rend impossible un déroulement naturel du pied.However, this construction makes a natural unfolding of the foot impossible.

Encore, une autre approche, connue par exemple du document EP-A-309 437, consiste dans la disposition d'une semelle plus ou moins souple et d'un contrefort flexible, qui entoure le talon. Cependant cette construction ne permet ni une tenue satisfaisante du talon, ni une transmission efficace des efforts provenant de la jambe de l'utilisateur.Yet another approach, known for example from document EP-A-309,437, consists in the arrangement a more or less flexible sole and a flexible buttress, which surrounds the heel. However this construction does not allow a satisfactory hold of the heel, nor an effective transmission of the forces coming from the leg the user.

La présente invention a donc comme objectif de fournir une chaussure de conception améliorée qui remédie aux désavantages rencontrés dans l'art antérieur et qui concilie les exigences contradictoires, d'améliorer la tenue du talon tout en permettant le déroulement naturel du pied, et en étant de construction simple et peu coûteuse.The present invention therefore aims to provide a shoe of improved design which remedies to the disadvantages encountered in the prior art and which reconciles conflicting requirements, to improve the behavior heel while allowing the natural course of the foot, and being simple and inexpensive construction.

L'idée centrale de la présente invention est d'améliorer la tenue du talon du pied en prévoyant, à ce niveau, un contrefort, qui est rigide et sensiblement non flexible. C'est alors la rigidité du contrefort qui permet en même temps une tenue satisfaisante du talon et une transmission des efforts. Par ailleurs, cette construction permet une flexibilité de la semelle externe dans la zone dite métatarso-phalangienne et un déroulement plus naturel du pied.The central idea of the present invention is to improve the holding of the heel of the foot by providing, at this level, a buttress, which is rigid and substantially non-flexible. It is then the stiffness of the buttress which allows at the same time, satisfactory heel hold and transmission of forces. Furthermore, this construction allows a flexibility of the outer sole in the so-called metatarsophalangeal area and a more natural course of the foot.

Selon un premier aspect de la présente invention, le contrefort rigide s'étend sur au moins un coté de la chaussure sensiblement jusqu'à la zone de flexion dite métatarso-phalangienne. Il résulte, du renforcement de la partie arrière de la chaussure, une transmission satisfaisante des efforts provenant de la jambe de l'utilisateur à la partie avant du pied, qui est en contact permanent avec le sol ou le support de glisse.According to a first aspect of the present invention, the rigid buttress extends over at least one side of the shoe substantially up to the so-called metatarsophalangeal flexion zone. It results from the strengthening of the rear part of the shoe, satisfactory transmission of forces from the user's leg to the front part of the foot, which is in permanent contact with the ground or the sliding support.

Selon un deuxième aspect de la présente invention, le contrefort rigide et essentiellement la partie arrière de la base du pied entoure le talon à la manière d'une coque. Cette construction, elle aussi permet une meilleure transmission des efforts, notamment en direction transversale, grâce au renforcement et à la forme de coque de la partie arrière de la chaussure, tout en gardant une flexibilité de la chaussure dans la zone métatarsophalangienne.According to a second aspect of the present invention, the rigid buttress and essentially the rear part of the base of the foot surrounds the heel like a shell. This construction also allows better transmission of forces, especially in transverse direction, thanks to the reinforcement and the shell shape of the rear part of the shoe, while retaining flexibility of the shoe in the metatarsophalangeal area.

Lesdites constructions permettent un meilleur contrôle du ski par le tenue du talon et en même temps un gain général d'énergie et une transmission directe des efforts par annulation des déformations parasites de la semelle et de la chaussure, lesquelles déformations parasites sont inutiles pour la propulsion par les mouvements typiques des sports susmentionnés.Said constructions allow better control of the ski by holding the heel and at the same time a gain general energy and direct transmission of forces by canceling parasitic deformations of the sole and the shoe, which parasitic deformations are useless for propulsion by typical movements of the above sports.

De toute façon, l'invention sera mieux comprise et d'autres caractéristiques de celle-ci seront mises en évidence à l'aide de la description qui suit en référence au dessin schématiquement en représentant, à titre d'exemple non limitatif, plusieurs modes de réalisation et dans lequel :

  • La figure 1 est une vue latérale d'un premier mode de réalisation de la présente invention,
  • la figure 2 est une vue latérale d'un deuxième mode de réalisation de la présente invention,
  • la figure 3 montre un contrefort selon la présente invention,
  • la figure 4 montre un autre contrefort selon la présente invention.
In any case, the invention will be better understood and other characteristics thereof will be highlighted with the aid of the description which follows with reference to the drawing schematically by representing, by way of nonlimiting example, several modes and in which:
  • FIG. 1 is a side view of a first embodiment of the present invention,
  • FIG. 2 is a side view of a second embodiment of the present invention,
  • FIG. 3 shows a buttress according to the present invention,
  • Figure 4 shows another buttress according to the present invention.

Sur les figures 1 et 2 est représentée une chaussure 1 destinée à la pratique du ski de fond, particulièrement pour le style dit skate. Cependant, la présente invention s'applique également à tous les sports exigeant un déroulement du pied, comme par exemple la raquette à neige, le ski de fond, le ski télémark et la randonnée, et/ou des sports de glisse comme par exemple le snowboard, le patin à glace, le patin à roulettes,...etc. Pour des raisons de simplicité, la description suivante est effectuée en référence à une chaussure pour la pratique du ski de fond.In FIGS. 1 and 2 is shown a shoe 1 intended for the practice of cross-country skiing, particularly for the skateboard style. However, the present invention also applies to all sports requiring a unfolding of the foot, such as snowshoeing, cross-country skiing, telemark skiing and hiking, and / or board sports such as snowboarding, ice skating, roller skating, ... etc. For some reasons of simplicity, the following description is made with reference to a ski boot background.

La chaussure 1 représentée comporte, d'une manière connue, une tige 2, une semelle externe 5 et un collier articulé 8, qui est fixé à la tige par l'intermédiaire d'un axe d'articulation 7. La construction d'une tige d'une chaussure pour la pratique de ski de fond est bien connue dans l'état de technique et ne vas pas être expliquée en détail dans la description.The shoe 1 shown comprises, in a known manner, a upper 2, an outer sole 5 and an articulated collar 8, which is fixed to the rod via a hinge pin 7. The construction of a shoe upper for cross-country skiing is well known in the art and will not be explained in detail in the description.

La chaussure 1 représentée sur les figures 1 et 2 est munie d'un premier contrefort arrière 13, en un matériau qui est assez souple pour permettre une fixation par piquage de ce contrefort souple 13 sur la tige 2.The shoe 1 shown in Figures 1 and 2 is provided with a first rear buttress 13, in a material which is flexible enough to allow attachment by stitching of this flexible buttress 13 on the rod 2.

Selon la présente invention, la chaussure 1 présente en outre un second contrefort 3, qui est plus rigide que le contrefort souple 13, et est en fait sensiblement non flexible. Ce contrefort 3 rigide entoure le talon 11 de la chaussure 1 par deux parois respectivement latérale 9 et médiale 10, et par une paroi arrière au niveau du talon 11. Par paroi latérale, respectivement médiane, on entend chacune des parois dudit contrefort disposée respectivement vers l'extérieur et vers l'intérieur du pied ou de la chaussure. Dans l'exemple représenté, le contrefort rigide s'étend vers l'avant sensiblement jusqu'à la zone 4 de flexion dite métatarso-phalangienne.According to the present invention, the shoe 1 also has a second buttress 3, which is more rigid as the flexible buttress 13, and is in fact substantially non-flexible. This rigid buttress 3 surrounds the heel 11 of the shoe 1 by two walls, respectively lateral 9 and medial 10, and by a rear wall at the heel 11. By lateral wall, respectively median, is meant each of the walls of said buttress disposed respectively towards the outside and towards the inside of the foot or shoe. In the example shown, the rigid buttress extends forward substantially up to zone 4 of flexion known as metatarsophalangeal.

Le renforcement de la chaussure 1 par l'intermédiaire du contrefort 3 rigide est donc limité à une zone comprise entre le talon 11 et ladite zone 4 de flexion métatarso-phalangienne. Le pied de l'utilisateur est donc bien tenu du côté du talon 11, tout en gardant une flexibilité de la chaussure 1 dans la zone de flexion métatarso-phalangienne 4, ce qui permet un déroulement quasi naturel du pied.The reinforcement of the shoe 1 via the rigid buttress 3 is therefore limited to a zone between the heel 11 and said zone 4 of metatarsophalangeal flexion. The foot of the user is therefore well held on the side of the heel 11, while keeping the shoe 1 flexible in the metatarsophalangeal flexion zone 4, which allows an almost natural unfolding of the foot.

Le contrefort 3 rigide a une hauteur maximale qui n'excède pas celle de la région située sensiblement au-dessous de la zone de cheville 6, et est notamment plus bas que le niveau de ladite zone.The rigid buttress 3 has a maximum height which does not exceed that of the region located substantially below the ankle area 6, and is notably lower than the level of said zoned.

Dans l'exemple de la figure 1, le contrefort 3 rigide monte sensiblement jusqu'au niveau de la zone d'articulation de la cheville et comporte l'axe d'articulation 7 du collier articulé 8.In the example of FIG. 1, the rigid buttress 3 rises substantially to the level of the zone of articulation of the ankle and comprises the axis of articulation 7 of the articulated collar 8.

Dans l'exemple de la figure 2, la hauteur maximale du contrefort 3 est au contraire plus basse que le niveau de l'axe d'articulation 7 qui n'est donc fixé que sur le premier contrefort souple 13, ce qui permet d'avoir plus de liberté en direction transversale au niveau du collier du fait de la plus grande souplesse du matériau.In the example of FIG. 2, the maximum height of the buttress 3 is on the contrary lower than the level of the hinge pin 7 which is therefore fixed only on the first flexible buttress 13, which allows more freedom in transverse direction at the level of the collar because of the greater flexibility of the material.

De toute façon, le hauteur maximale du contrefort 3 est choisie de telle façon que le mouvement naturel de la cheville 6 ne soit pas entravé.In any case, the maximum height of the buttress 3 is chosen so that the movement natural ankle 6 is not hindered.

En partant de la zone au-dessous de la zone de cheville 6 représentant la hauteur maximale en direction transversale du contrefort 2, chacune des parois 9, 10, décroít en hauteur en allant vers l'avant du contrefort 2. A l'extrémité avant 12 du contrefort 2, chaque paroi 9, 10, rejoint le bord 21 supérieur de la semelle externe 3. Dans l'exemple représenté sur la figure 1, la paroi latérale 9 décroít d'une manière sensiblement continue en formant un angle d'à peu près 45° avec le bord 21 supérieur de la semelle externe. La paroi médiale 10 peut avoir la même forme.Starting from the area below the dowel area 6 representing the maximum height in transverse direction of the buttress 2, each of the walls 9, 10, decreases in height going towards the front of the buttress 2. At the front end 12 of the buttress 2, each wall 9, 10, joins the edge 21 upper of the outer sole 3. In the example shown in Figure 1, the side wall 9 decreases in a substantially continuous manner at an angle of approximately 45 ° with the upper edge 21 of the outsole. The medial wall 10 can have the same shape.

En partant de la zone au-dessous de la zone de cheville 6 représentant la hauteur maximale en direction transversale du contrefort 2, la paroi latérale 9, de même que la paroi médiale 10, décroít également vers l'arrière, zone de talon 11, pour un meilleur confort du pied.Starting from the area below the dowel area 6 representing the maximum height in transverse direction of the buttress 2, the side wall 9, as well as the medial wall 10, decreases also towards the rear, heel zone 11, for better comfort of the foot.

Par ailleurs, le contrefort 2 peut former une butée 22 pour l'appui d'un boucle 14 élastique qui entoure l'arrière de la cheville 6 à la manière d'un éperon qui fournit un rappel élastique du collier. Cette boucle 14 est par ailleurs connue et ne constitue pas un élément essentiel de la présente invention. C'est pour cette raison que la boucle 14 ne va être décrite d'une manière détaillée.Furthermore, the buttress 2 can form a stop 22 for the support of an elastic loop 14 which surrounds the rear of the ankle 6 in the manner of a spur which provides an elastic return to the collar. This loop 14 is also known and does not constitute an essential element of the present invention. It is for this reason that the loop 14 will not be described in detail.

Etant donnée la rigidité du contrefort 3 rigide, qui peut rendre impossible une fixation du contrefort 3 rigide directement sur le tissu et/ou cuir de la tige 2, il peut être avantageux de fixer le contrefort 3 rigide, par exemple par collage et/ou rivetage, sur le contrefort souple 13, qui lui présente une flexibilité suffisante permettant sa liaison, par exemple par collage, piquage et/ou rivetage sur la tige 2. Le contrefort 13 souple permet en outre un certain rembourrage du contrefort 3 rigide, ce qui évite des pressions locales sur le pied de l'utilisateur.Given the rigidity of the rigid buttress 3, which can make it impossible to fix the buttress 3 rigid directly on the fabric and / or leather of the upper 2, it may be advantageous to fix the buttress 3 rigid, for example by gluing and / or riveting, on the flexible buttress 13, which has a sufficient flexibility allowing its connection, for example by gluing, stitching and / or riveting on the rod 2. The flexible buttress 13 also allows a certain padding of the rigid buttress 3, which avoids local pressures on the user's foot.

Enfin, la structure en deux couches du contrefort 3, 13, confère à celui-ci une raideur supplémentaire à la somme des deux raideurs individuelles par l'effet "lamellé-collé" obtenu.Finally, the two-layer structure of the buttress 3, 13, gives it stiffness additional to the sum of the two individual stiffnesses by the "glulam" effect obtained.

De préférence le contrefort 3 rigide ne couvre le contrefort 13 souple que partiellement en laissant découvert un bord 23, qui déborde au moins le bord supérieur 24 de la paroi latérale du contrefort 3 rigide, de façon à faciliter sa fixation ou liaison sur la tige.Preferably the rigid buttress 3 covers the flexible buttress 13 only partially, leaving uncovered an edge 23, which extends at least over the upper edge 24 of the side wall of the buttress 3 rigid, so as to facilitate its fixing or connection to the rod.

Les matériaux préférés du contrefort 3 rigide sont des matières plastiques qui peuvent être renforcées par des fibres, par exemple en verre ou en carbone, et des matériaux métalliques. De toute façon sont adaptés tous les matériaux garantissant essentiellement une quasi non flexibilité du contrefort 3 rigide. La rigidité préférée du contrefort rigide est comprise entre 260 MPa (Mega Pascal) ce qui correspond au Module d'élasticité Pebax 6333, et 200 GPa (Giga Pascal) ce qui correspond au Module d'élasticité d'un composite fibre verre + carbone.The preferred materials of the rigid buttress 3 are plastics which can be reinforced with fibers, for example glass or carbon, and metallic materials. Of in any case, all the materials are adapted, essentially guaranteeing almost non flexibility of the stiff buttress 3. The preferred stiffness of the rigid buttress is between 260 MPa (Mega Pascal) which corresponds to the Modulus of elasticity Pebax 6333, and 200 GPa (Giga Pascal) this which corresponds to the Modulus of elasticity of a glass fiber + carbon composite.

Outre la hauteur du contrefort rigide 3, la différence principale entre les chaussures des figures 1 et 2 réside dans la construction de la semelle externe.Besides the height of the rigid buttress 3, the main difference between the shoes of Figures 1 and 2 lies in the construction of the outer sole.

En effet, la semelle externe selon le mode de réalisation représenté dans la figure 2 est constituée en deux parties, une partie avant 15 et une partie arrière 16. La partie 15 avant s'étend essentiellement de l'extrémité avant 24 de la chaussure 1 jusqu'à la zone 4 de flexion métatarsophalangienne. Cette partie 15 avant est suffisamment souple pour permettre une flexion quasi naturelle dans ladite zone 4 de flexion.Indeed, the outer sole according to the embodiment shown in Figure 2 consists in two parts, a front part 15 and a rear part 16. The front part 15 extends essentially from the front end 24 of shoe 1 to zone 4 of metatarsophalangeal flexion. This front part is flexible enough to allow almost bending natural in said zone 4 of flexion.

La partie arrière 16 de la semelle externe et le contrefort 3 rigide forment un ensemble monobloc et de préférence monomatière. Cette construction présente des avantages en ce qui concerne le montage de la partie arrière 16 de la semelle et du contrefort 3 rigide en une pièce sur la tige 2, l'étanchéité de la partie inférieure arrière de la chaussure 1, particulièrement dans la zone qui représente de façon traditionnelle la liaison entre la semelle externe et du contrefort, et également en ce qui concerne un renforcement encore amélioré, par rapport au mode de réalisation décrit en référence à la figure 1, de la partie arrière et du talon de la chaussure 2.The rear part 16 of the external sole and the rigid buttress 3 form a one-piece assembly and preferably single material. This construction has advantages with regard to the mounting the rear part 16 of the sole and the rigid buttress 3 in one piece on the rod 2, the tightness of the rear lower part of the shoe 1, particularly in the area which traditionally represents the connection between the outer sole and the buttress, and also in with regard to a further improved reinforcement, compared to the embodiment described in reference to FIG. 1, of the rear part and the heel of shoe 2.

Des constructions préférées du contrefort 3 rigide vont maintenant être décrites d'une manière détaillée en référence aux figures 3 et 4.Preferred constructions of the rigid buttress 3 will now be described in a manner detailed with reference to Figures 3 and 4.

Le contrefort 3 rigide représenté sur la figure 3 a la forme d'une coque de section transversale en forme de "U" et entourant complètement le talon, à savoir aussi bien latéralement, à l'arrière que par en-dessous, et a une hauteur maximale bien au-dessous du niveau de la zone de cheville 6. La hauteur préférée est comprise entre environ 2 cm et 4 cm. Le mode de réalisation selon la figure 2, à savoir la construction monobloc de la partie arrière de la semelle externe avec le contrefort 3 rigide, est symbolisée par des traits en pointillé.The rigid buttress 3 shown in FIG. 3 has the shape of a shell of cross section in "U" shaped and completely surrounding the heel, namely laterally, at the back as well as below, and at a maximum height well below the level of the ankle area 6. The height preferred is between about 2 cm and 4 cm. The embodiment according to FIG. 2, namely the monobloc construction of the rear part of the outer sole with the rigid buttress 3, is symbolized by dotted lines.

Le contrefort 3 rigide représenté dans la figure 3 couvre entièrement la base du pied. Bien entendu, le contrefort 3 pourrait aussi bien ne couvrir la partie de base du pied que partiellement, par exemple en formant un creux ou un ou plusieurs évidements dans la partie de base 17 du contrefort 3 rigide. De toute façon la construction du contrefort 3 rigide selon l'exemple représenté dans la figure 3 permet un entourage du talon et de la partie arrière de la base du pied à la manière d'une coque. En serrant un système de serrage, qui n'est pas représenté dans les figures, et qui peut être constitué par exemple par un laçage, le pied est pressé dans la coque formée par le contrefort 3 rigide et est alors bien tenu au talon.The rigid buttress 3 shown in FIG. 3 completely covers the base of the foot. Of course, the buttress 3 might as well cover the base portion of the foot only partially, for example by forming a hollow or one or more recesses in the base part 17 of the rigid buttress 3. Of anyway the construction of the rigid buttress 3 according to the example shown in Figure 3 allows an entourage of the heel and the rear part of the base of the foot in the manner of a shell. By squeezing a clamping system, which is not shown in the figures, and which can be constituted for example by lacing, the foot is pressed into the shell formed by the rigid buttress 3 and is then well held in the heel.

Comme il est représenté sur la figure 3, la paroi 9 latérale et/ou la paroi 10 médiale du contrefort 3 rigide peuvent être pourvues d'évidements 18, ce qui permet une réduction du poids du contrefort 3 rigide tout en gardant sa rigidité.As shown in FIG. 3, the lateral wall 9 and / or the medial wall 10 of the buttress 3 rigid may be provided with recesses 18, which allows a reduction in the weight of the buttress 3 rigid while keeping its rigidity.

Dans l'exemple représenté dans la figure 4, le contrefort 3 rigide dépourvu de fond 17 et muni de rebords 19 s'étend à partir des bords inférieurs respectivement de la paroi 9 latérale et de la paroi 10 médiale, horizontalement vers l'intérieur. Ces rebords 19 transversaux servent à la fixation du contrefort par intercalation entre une première de montage de la tige 2 et la semelle externe. En outre, ces rebords 19 transversaux participent à la rigidification du contrefort 3 rigide, notamment en torsion. Bien entendu, ces rebords 19 transversaux peuvent être prévus assez larges de telle sorte qu'ils se rejoignent presque en ne laissant qu'une fente entre eux.In the example shown in Figure 4, the rigid buttress 3 without bottom 17 and provided with flanges 19 extends from the lower edges respectively of the side wall 9 and of the wall 10 medial, horizontally inward. These transverse flanges 19 serve for fixing the buttress by intercalation between a first assembly of the rod 2 and the outer sole. In in addition, these transverse flanges 19 participate in the stiffening of the rigid buttress 3, in particular in torsion. Of course, these transverse flanges 19 can be provided fairly wide so that that they almost meet leaving only one gap between them.

La paroi 9 latérale du contrefort 3 rigide, dans l'exemple représenté dans les figures, peut s'étendre plus loin dans la direction longitudinale que la paroi 10 médiale en respectant l'orientation de la ligne de flexion naturelle dans la zone 4 métatarso-phalangienne, qui forme un angle aigu avec l'axe longitudinal d'un pied.The side wall 9 of the rigid buttress 3, in the example shown in the figures, can extend further in the longitudinal direction than the medial wall, respecting the orientation of the natural flexion line in the metatarsophalangeal zone 4, which forms an acute angle with the axis longitudinal of a foot.

Dans certains cas il peut être avantageux de rallonger la paroi 10 médiale par rapport à la paroi 9 latérale pour créer un support amélioré du côté médial de la chaussure.In some cases it may be advantageous to lengthen the medial wall 10 relative to the wall 9 lateral to create improved support on the medial side of the shoe.

Claims (17)

  1. Sport boot comprising an external sole, a non-molded upper (2) and a rear rigid stiffener (3) that surrounds the heel (11), characterized in that the stiffener (3) extends over at least one side of the boot (1) up to the flexion zone (4) called the metatarsophalangeal zone.
  2. Boot according to claim 1, characterized in that the rigid stiffener (3) is made from a material having a modulus of elasticity comprised between 260 MPa and 200 Gpa.
  3. Boot according to claim 1, characterized in that the rigid stiffener (3) at least partially covers a flexible stiffener (13).
  4. Boot according to claim 3, characterized in that the rigid stiffener (3) is fixed to the flexible stiffener (13).
  5. Boot according to claim 4, characterized in that the rigid stiffener (3) is fixed to the upper (2) by means of the flexible stiffener (13).
  6. Boot according to one of claims 1-5, characterized in that the rigid stiffener (3) surrounds the heel (11) and substantially the rear portion of the base of the foot (17) in the manner of a shell.
  7. Boot according to any one of claims 1-6, characterized in that the rigid stiffener (3) extends upwardly to a level below the zone corresponding to the ankle (6).
  8. Boot according to any one of claims 1-7, characterized in that the rigid stiffener (3) extends upwardly to a level located substantially below the zone corresponding to an axis (7) of a flexible collar (8) of the boot.
  9. Boot according to any one of claims 1-8, characterized in that the lateral wall (9) of the rigid stiffener (3) extends farther in a longitudinal direction than the medial wall (10).
  10. Boot according to any one of claims 1-9, characterized in that the medial wall (10) of the stiffener (3) extends farther in a longitudinal direction than the lateral wall (9).
  11. Boot according to any one of claims 1-10, characterized in that the wall of the rigid stiffener (3) in the heel zone (11) is lower than the highest level of the stiffener (3).
  12. Boot according to any one of claims 1-11, characterized in that the highest level of the rigid stiffener (3) in the vertical direction is located in the zone substantially below the ankle (6).
  13. Boot according to any one of claims 1-12, characterized in that the rigid stiffener (3) and at least the rear portion of the external sole (5) form a one piece assembly (16).
  14. Boot according to any one of claims 1-13, characterized in that the upper edge of the lateral (9) and/or medial (10) wall of the rigid stiffener (3) continuously decreases in order to join the edge of the external sole (5) at the front end (24) of the stiffener (3).
  15. Boot according to any one of the previous claims, characterized in that the upper (2) comprises fabric and/or leather.
  16. Boot according to any one of the preceding claims, characterized in that the boot is adapted to cooperate with a gliding apparatus, such as a ski, a snowshoe, an ice skate, a snowboard or a roller skate.
  17. Boot according to any one of the preceding claims, characterized in that the boot is a cross country ski boot.
EP96119600A 1996-01-30 1996-12-06 Sport shoe Expired - Lifetime EP0787441B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01121908A EP1166668B1 (en) 1996-01-30 1996-12-06 Sportsshoe with a rigid heel stiffener fixed on a flexible heel stiffener

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601250 1996-01-30
FR9601250A FR2743988B1 (en) 1996-01-30 1996-01-30 SPORTS SHOE

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EP01121908A Division EP1166668B1 (en) 1996-01-30 1996-12-06 Sportsshoe with a rigid heel stiffener fixed on a flexible heel stiffener

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EP0787441A1 EP0787441A1 (en) 1997-08-06
EP0787441B1 true EP0787441B1 (en) 2002-06-26

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EP01121908A Expired - Lifetime EP1166668B1 (en) 1996-01-30 1996-12-06 Sportsshoe with a rigid heel stiffener fixed on a flexible heel stiffener
EP96119600A Expired - Lifetime EP0787441B1 (en) 1996-01-30 1996-12-06 Sport shoe

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US (2) US5884420A (en)
EP (2) EP1166668B1 (en)
AT (2) ATE270830T1 (en)
CA (1) CA2195499A1 (en)
CZ (1) CZ289312B6 (en)
DE (2) DE69632927T2 (en)
FR (1) FR2743988B1 (en)
NO (1) NO310092B1 (en)

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CN106974364A (en) * 2013-01-22 2017-07-25 耐克创新有限合伙公司 The adaptive heel component of microlight-type

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EP1166668A2 (en) 2002-01-02
DE69632927D1 (en) 2004-08-19
FR2743988B1 (en) 1998-03-20
EP0787441A1 (en) 1997-08-06
NO310092B1 (en) 2001-05-21
FR2743988A1 (en) 1997-08-01
ATE270830T1 (en) 2004-07-15
US5884420A (en) 1999-03-23
US6076286A (en) 2000-06-20
CZ289312B6 (en) 2001-12-12
CZ28297A3 (en) 1997-08-13
DE69632927T2 (en) 2005-07-28
DE69622015T2 (en) 2002-11-28
ATE219636T1 (en) 2002-07-15
CA2195499A1 (en) 1997-07-31
DE69622015D1 (en) 2002-08-01
NO970275L (en) 1997-07-31
NO970275D0 (en) 1997-01-22
EP1166668B1 (en) 2004-07-14
EP1166668A3 (en) 2002-01-16

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