EP2572599B1 - Shell of a ski boot with spoiler - Google Patents

Shell of a ski boot with spoiler Download PDF

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Publication number
EP2572599B1
EP2572599B1 EP20110425241 EP11425241A EP2572599B1 EP 2572599 B1 EP2572599 B1 EP 2572599B1 EP 20110425241 EP20110425241 EP 20110425241 EP 11425241 A EP11425241 A EP 11425241A EP 2572599 B1 EP2572599 B1 EP 2572599B1
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EP
European Patent Office
Prior art keywords
shell
ski boot
notch
rear bearing
bearing element
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.)
Active
Application number
EP20110425241
Other languages
German (de)
French (fr)
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EP2572599A1 (en
Inventor
Remo Venturato
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.)
Rossignol Lange SRL
Original Assignee
Rossignol Lange SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rossignol Lange SRL filed Critical Rossignol Lange SRL
Priority to EP20110425241 priority Critical patent/EP2572599B1/en
Priority to US13/627,534 priority patent/US10531703B2/en
Publication of EP2572599A1 publication Critical patent/EP2572599A1/en
Application granted granted Critical
Publication of EP2572599B1 publication Critical patent/EP2572599B1/en
Active 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
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/047—Ski or like boots characterised by type or construction details provided with means to improve walking with the skiboot
    • A43B5/0474—Ski or like boots characterised by type or construction details provided with means to improve walking with the skiboot having a walk/ski position
    • 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
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/0429—Adjustment of the boot to calf or shin, i.e. fibula, tibia
    • A43B5/0431—Adjustment of the boot to calf or shin, i.e. fibula, tibia to the length of calf or shin, i.e. fibula, tibia
    • 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
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/047—Ski or like boots characterised by type or construction details provided with means to improve walking with the skiboot
    • 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
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/0478—Mid-entry skiboots, hybrid skiboots

Definitions

  • the invention relates to a ski boot shell and a ski boot as such comprising such a shell. It also relates to a method of manufacturing a ski boot shell.
  • a ski boot 1 represented on the figure 1 , generally consists of a rigid shell 9, obtained by injection of a plastic material in a manufacturing mold, on which is fixed a collar 2 of plastic material, articulated about an axis of rotation 3, intended to cover the lower leg.
  • This assembly forms a ski boot upper made of plastic material, into which a comfort liner 6 is inserted.
  • the shell 9 and the collar 2 have an indentation along their entire length to allow a separation of flaps distributed around this indentation and to facilitate the boot and heaving of the shoe.
  • Closing and clamping elements 4, 5 are distributed on the flaps on either side of this notch to close and tighten the rod around the foot and the lower leg of the skier during the practice of skiing, to allow him a good guidance of his skis.
  • the rigid hull that rises above the ankle of the skier, and which has a forward inclination adapted to the practice of skiing still represents a hindrance in the rear part of the leg , and limits or even prevents the straightening of the leg and ultimately represents a constraint for walking with the ski boot.
  • the document DE1806109 describes a ski boot shell such that it comprises an indentation in its rear upper part and in that it comprises a rear support element movably connected relative to the hull, able to occupy a first position in which it is in abutment against at least one surface of the hull to at least partially close the notch and promote the practice of skiing and a second position more advanced.
  • An object of the invention is therefore to provide a ski boot that promotes the practice of walking, while maintaining the best performance possible for skiing and an acceptable cost.
  • the invention proposes a hull which comprises a spoiler in its upper rear part movably connected to the hull, adapted to occupy a first ski practice position and a second operating position.
  • the invention is based on a ski boot comprising a usual shoe architecture, as illustrated in FIG. figure 1 .
  • this ski boot comprises a modified shell 10, more particularly represented on the Figures 2, 3 , 6, 7 and 10 , which comprises a rear notch 11 at which is disposed a movable rear support element 20, which we will also call more simply by its English name "spoiler".
  • this indentation 11 has a trapezoidal shape, even V or U, which extends from the upper end of the shell to near the axis of rotation 14 provided for a collar, no represent. This notch is substantially centered with respect to the longitudinal median plane of the shoe.
  • the spoiler 20 is fixed on the shell 10 at a lower point, by any fastener 12, such as a rivet for example. It then extends towards the top of the hull, so as to cover a sufficient surface which corresponds to the notch 11 of the hull 10. It furthermore comprises two lateral surfaces 23 which can overlap the rear surface of the hull, at the the side walls 13 of the notch 11, as particularly represented on the figure 8 .
  • This hull structure is advantageous since its spoiler 20 is movable between a first position provided for the practice of the ski in which it abuts on the rear surface of the hull 10 and a second position provided for the step in which it departs at least partially to the rear, releasing the notch 11 and allowing the lower leg to straighten to facilitate the walk of the skier, as represented by the figures 7 and 9 .
  • the movement of the spoiler is similar to a rotation about a transverse axis 15 delimited by the lower edge 17 of the notch 11.
  • the Figures 4 and 5 more particularly represent the spoiler according to one embodiment. It is in the form of a monolithic element made of plastic material, advantageously formed by a single plastic injection step.
  • the figure 4 illustrates the front face of the spoiler 20, that is to say oriented towards the inside of the shell 10. It comprises a tongue 21 in its lower part, within which is provided an opening 22 intended to receive the element 12 mentioned above. As a note, this tongue 21 is positioned inside the shell 10, to facilitate its maintenance during the rearward thrusts exerted on the spoiler by the skier's leg. Alternatively, it could however be fixed on the outer surface of the hull. It further comprises two lateral surfaces 23 intended to abut on the rear surface of the shell 10, then a raised central portion intended to occupy the free space of the notch 11. This raised part forms two lateral surfaces in relief 24 intended to bear against the surfaces disposed in the thickness of the side walls 13 of the notch.
  • These raised lateral surfaces 24 are oriented in a direction substantially perpendicular to the lateral surfaces 23, these two joined surfaces thus forming a shoulder.
  • the latter guarantees the correct positioning and the good maintenance of the spoiler 20 relative to the hull 10 in both the longitudinal x and transverse directions y in the practice position of the ski of the spoiler.
  • This construction of a double shoulder-type abutment connection between the spoiler and the hull allows the latter to have overall rigidity similar to that of the hulls of the state of the art when it is in the practice position of the ski, and that the spoiler is held in abutment position under the pressure force of a collar.
  • the spoiler is preferably made of a rigid material, of stiffness similar to that of the rest of the hull.
  • the raised central portion of the spoiler 20 comprises reinforcing ribs 25, of thickness substantially equal to the thickness of the shell 10, to be housed in the free volume of the notch 11.
  • the border between the tongue 21 and the remainder of the spoiler has a region of lesser thickness 27 extending in the transverse direction, intended for positioning at the lower edge 17 of the notch 11. It thus forms a transverse axis of rotation 15 by the flexibility of the plastic material combined with its reduced thickness and its support at a ridge 17 of the shell.
  • the rear surface 26 of the spoiler visible on the figure 5 , has a smooth and continuous face, allowing to complete the outer surface of the hull continuously in its first skiing position.
  • the invention also relates to a ski boot, such as that described on the figure 1 , incorporating a shell according to the invention, as described above.
  • This rigid shell 10 generally made of a plastic material such as polyurethane hardness between 40 and 60 Shore D or by any other material of equivalent stiffness, and obtained by injection, surrounds the skier's foot.
  • These two rigid elements, forming a rod are provided with a central notch to allow a spacing facilitating donning and heaving.
  • ski boot In a first ski practice position, the boot is tightened by means of the binding devices, and the skier's leg is locked and tightened in an inclined skiing position.
  • the collar bears on the outer surface of the hull and maintains the spoiler in its first ski practice position, as explained above and more particularly shown on the figures 6 and 8 .
  • the hull and its spoiler in position Ski practice thus represent a set of similar shape to the hulls of the state of the art, which is perfect for skiing.
  • this solution of the invention is naturally compatible with all the rods of the state of the art, and is particularly particularly complementary with the solutions for unlocking the inclined positioning of the collar relative to the shell, to release at best the possibility of backward movement of the skier's leg for the purpose of walking.
  • the invention is not limited to the ski boot shell detailed above by way of example.
  • the hull could have another shape, and the notch could occupy any other surface and any other shape.
  • it extends over at least a quarter, or even a third, of the height of the shell, and / or over at least half the width of the upper opening of the shell intended to insert the foot, measured in the rest position of the hull, to provide enough freedom to the skier's leg.
  • the spoiler could have another shape, especially at its bearing surfaces forming a shoulder-type abutment on the shell.
  • any other configuration to obtain a stop in the two longitudinal and transverse directions y could agree, even through a single inclined bearing surface, the shell having a corresponding inclined surface at its Lateral edges 13.
  • the shoulder described could have another shape.
  • the abutment of the spoiler could only exist in the only longitudinal direction, to ensure that the spoiler does not pass through the notch 11 to the inside of the hull, where it could hit the leg of the skier.
  • the spoiler could be in any other material, and / or be in several elements fixed together.
  • a lateral attachment point positioned at one of the lateral edges of the notch on the rear surface of the hull, in which case its movement could for example approach the a rotation about a vertical axis. It could thus be movable along an axis of rotation of any other direction, but preferably positioned near the notch, at the rear surface of the hull.
  • it could be bonded to the shell by any other means of attachment, such as a weld or gluing for example, and / or with a single or several attachment points or a line or attachment surface.
  • this attachment is preferably positioned at the rear surface of the shell, preferably in the vicinity of the notch, and not for example on a side surface of the shell. His movement could be different from a simple rotation. It may also not completely close the notch in the ski practice position. It could have any other shape, but preferably comprising an area less than or equal to twice the area of the notch. Similarly, its height is preferably limited, not exceeding by more than 5 cm the maximum height of the hull, that is to say, height less than or equal to the height of the hull increased by 5 cm.
  • a shoe could comprise several spoilers 20 of different properties, for example of different hardness, to allow a skier to choose the spoiler among the existing plurality representing the best compromise, between the two extreme cases of a very rigid spoiler favorable skiing and less comfortable, for example for the practice of competition, and on the contrary a spoiler very flexible, more comfortable but less efficient for the practice of skiing, well suited for beginners.
  • the choice of the spoiler thus makes it possible to define the rigidity of the hull in the practice position of the ski.
  • the spoiler is naturally mounted removably on the shell, that is to say by a device for easy removal, preferably without tools.
  • the spoiler could be non-removable, that is to say fixed by a device not provided for the removal of the spoiler, which withdrawal would be either impossible or very difficult and not user friendly.
  • the invention also relates to a method of manufacturing a ski boot shell, comprising a first step of manufacturing an external rigid shell by injection of rigid plastic material, and comprising a second step of manufacturing a spoiler and a step of fixing the spoiler on the outer rigid shell, movably at a rear notch.
  • the stage of manufacture of the spoiler may consist of a second stage of injection of a plastic material.
  • the method may comprise a third step of injecting a plastic material to form a second spoiler for the same shell, with mechanical properties different from those of the first spoiler.
  • Such a solution of the invention offers the advantage of great ease for the manufacture of a shoe, since the shell differs from the usual shells only by the addition of a notch. Its manufacturing mold is easy and inexpensive to manufacture. In addition, the spoiler has a relatively simple shape, easy and inexpensive to manufacture.

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

Description

L'invention concerne une coque de chaussure de ski et une chaussure de ski en tant que telle comprenant une telle coque. Elle concerne aussi un procédé de fabrication d'une coque de chaussure de ski.The invention relates to a ski boot shell and a ski boot as such comprising such a shell. It also relates to a method of manufacturing a ski boot shell.

De manière connue dans l'état de la technique, une chaussure de ski 1, représentée sur la figure 1, se compose en général d'une coque rigide 9, obtenue par injection d'un matériau plastique dans un moule de fabrication, sur laquelle on fixe un collier 2 en matériau plastique, articulé autour d'un axe de rotation 3, destiné à couvrir le bas de jambe. Cet ensemble forme une tige de chaussure de ski en matériau plastique, dans laquelle est inséré un chausson de confort 6. La coque 9 et le collier 2 présentent une échancrure sur toute leur longueur pour permettre un écartement de rabats répartis autour de cette échancrure et faciliter le chaussage et déchaussage de la chaussure. Des éléments de fermeture et serrage 4, 5 sont répartis sur les rabats de part et d'autre de cette échancrure pour fermer et serrer la tige autour du pied et du bas de jambe du skieur lors de la pratique du ski, pour lui permettre un bon guidage de ses skis.In a manner known in the state of the art, a ski boot 1, represented on the figure 1 , generally consists of a rigid shell 9, obtained by injection of a plastic material in a manufacturing mold, on which is fixed a collar 2 of plastic material, articulated about an axis of rotation 3, intended to cover the lower leg. This assembly forms a ski boot upper made of plastic material, into which a comfort liner 6 is inserted. The shell 9 and the collar 2 have an indentation along their entire length to allow a separation of flaps distributed around this indentation and to facilitate the boot and heaving of the shoe. Closing and clamping elements 4, 5 are distributed on the flaps on either side of this notch to close and tighten the rod around the foot and the lower leg of the skier during the practice of skiing, to allow him a good guidance of his skis.

Avec une telle chaussure, un problème se pose lorsque le skieur a besoin de marcher. En effet, la forme de la tige est prévue pour la position idéale de pratique du ski et induit une forte inclinaison vers l'avant de la jambe du skieur. Cette position est inadaptée à la marche et la rigidité de la chaussure amplifie la difficulté de pratique de la marche avec une telle chaussure. Une première action en vue de la marche consiste naturellement à détacher les éléments de fermeture et serrage 4, 5 de la chaussure pour offrir une première flexibilité au skieur. De plus, comme le collier 2 est mobile en rotation autour de la coque, il peut aussi éventuellement légèrement se redresser. Toutefois, ce simple relâchement du serrage de la tige reste insuffisant en pratique et la rotation du collier est souvent limitée par une butée arrière.With such a shoe, a problem arises when the skier needs to walk. Indeed, the shape of the rod is provided for the ideal position of skiing and induces a steep forward tilt of the skier's leg. This position is unsuitable for walking and the stiffness of the shoe amplifies the difficulty of practicing walking with such a shoe. A first action for walking is naturally to detach the closure and clamping elements 4, 5 of the shoe to provide a first flexibility to the skier. Moreover, since the collar 2 is rotatable around the shell, it can also possibly slightly recover. However, this simple loosening of the clamping of the rod remains insufficient in practice and the rotation of the collar is often limited by a rear stop.

Ainsi, d'autres solutions, comme celle décrite par le document EP1915917 , proposent d'ajouter un dispositif de verrouillage/déverrouillage de la liaison entre le collier 2 et la coque 9 afin de permettre au collier d'occuper une position beaucoup plus relevée pour faciliter la marche lorsqu'il est déverrouillé.Thus, other solutions, such as that described by the document EP1915917 , propose to add a device for locking / unlocking the connection between the collar 2 and the shell 9 to allow the collar to occupy a much higher position to facilitate walking when unlocked.

Toutefois, dans tous les cas, la coque rigide qui remonte au-dessus de la cheville du skieur, et qui présente une inclinaison vers l'avant adaptée à la pratique du ski, représente toujours une gêne au niveau de la partie arrière de la jambe, et limite, voire empêche, le redressement de la jambe et représente finalement une contrainte pour la marche avec la chaussure de ski.However, in all cases, the rigid hull that rises above the ankle of the skier, and which has a forward inclination adapted to the practice of skiing, still represents a hindrance in the rear part of the leg , and limits or even prevents the straightening of the leg and ultimately represents a constraint for walking with the ski boot.

Le document DE1806109 décrit une coque de chaussure de ski telle qu'elle comprend une échancrure dans sa partie haute arrière et en ce qu'elle comprend un élément d'appui arrière lié de manière mobile par rapport à la coque, apte à occuper une première position dans laquelle il se trouve en butée contre au moins une surface de la coque pour fermer au moins partiellement l'échancrure et favoriser la pratique du ski et une seconde position plus avancée.The document DE1806109 describes a ski boot shell such that it comprises an indentation in its rear upper part and in that it comprises a rear support element movably connected relative to the hull, able to occupy a first position in which it is in abutment against at least one surface of the hull to at least partially close the notch and promote the practice of skiing and a second position more advanced.

Ainsi, les chaussures de ski existantes restent très mal adaptées à la pratique de la marche et il existe un besoin d'une autre solution permettant d'améliorer la marche avec une chaussure de ski.Thus, the existing ski boots are very poorly adapted to the practice of walking and there is a need for another solution to improve walking with a ski boot.

Un objet de l'invention est donc de proposer une chaussure de ski qui favorise la pratique de la marche, tout en conservant la meilleure performance possible pour la pratique du ski et un coût acceptable.An object of the invention is therefore to provide a ski boot that promotes the practice of walking, while maintaining the best performance possible for skiing and an acceptable cost.

A cet effet, l'invention propose une coque qui comprend un spoiler dans sa partie haute arrière lié de manière mobile à la coque, apte à occuper une première position de pratique du ski et une seconde position de marche.For this purpose, the invention proposes a hull which comprises a spoiler in its upper rear part movably connected to the hull, adapted to occupy a first ski practice position and a second operating position.

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 d'un mode d'exécution particulier fait à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 est une vue de côté d'une chaussure de ski selon l'état de la technique.
  • La figure 2 représente une vue arrière d'une coque de chaussure de ski sans son spoiler selon un mode de réalisation de l'invention.
  • La figure 3 représente une vue arrière d'une coque de chaussure de ski avec son spoiler selon un mode de réalisation de l'invention.
  • La figure 4 représente une vue en perspective de la face avant du spoiler de la coque de la chaussure de ski selon le mode de réalisation de l'invention.
  • La figure 5 représente une vue en perspective de la face arrière du spoiler de la coque de la chaussure de ski selon le mode de réalisation de l'invention.
  • Les figures 6 et 7 représentent des vues de côté de la coque de chaussure de ski avec respectivement le spoiler en position de pratique du ski et en position inclinée vers l'arrière pour la pratique de la marche selon le mode de réalisation de l'invention.
  • Les figures 8 et 9 représentent des vues de dessus de coupes de la coque de chaussure de ski par un plan horizontal avec respectivement le spoiler en position de pratique du ski et en position inclinée vers l'arrière pour la pratique de la marche selon le mode de réalisation de l'invention.
  • La figure 10 représente une vue en perspective de dessus de la coque de la chaussure de ski avec le spoiler en position inclinée vers l'arrière pour la pratique de la marche selon le mode de réalisation de l'invention.
These objects, features and advantages of the present invention will be set forth in detail in the following description of a particular embodiment made in a non-limiting manner in relation to the appended figures among which:
  • The figure 1 is a side view of a ski boot according to the state of the art.
  • The figure 2 represents a rear view of a ski boot shell without its spoiler according to one embodiment of the invention.
  • The figure 3 represents a rear view of a ski boot shell with its spoiler according to one embodiment of the invention.
  • The figure 4 represents a perspective view of the front face of the spoiler of the shell of the ski boot according to the embodiment of the invention.
  • The figure 5 represents a perspective view of the rear face of the spoiler of the shell of the ski boot according to the embodiment of the invention.
  • The Figures 6 and 7 represent side views of the ski boot shell with respectively the spoiler in the practice position of the ski and in the rearward inclined position for practicing the step according to the embodiment of the invention.
  • The Figures 8 and 9 represent top views of sections of the ski boot shell by a horizontal plane with respectively the spoiler in the practice position of the ski and in the backward inclined position for the practice of walking according to the embodiment of the invention.
  • The figure 10 represents a perspective view from above of the hull of the ski boot with the spoiler in a rearward inclined position for the practice of walking according to the embodiment of the invention.

Dans la description suivante, nous utiliserons la direction longitudinale x pour la direction horizontale orientée de l'arrière vers l'avant par rapport à la chaussure, la direction transversale y pour la direction horizontale perpendiculaire, et la direction verticale z perpendiculaire aux deux précédentes, orientée vers le haut de la chaussure.In the following description, we will use the longitudinal direction x for the horizontal direction oriented from back to front with respect to the shoe, the transverse direction y for the perpendicular horizontal direction, and the vertical direction z perpendicular to the two preceding ones, oriented towards the top of the shoe.

L'invention repose sur une chaussure de ski comprenant une architecture de chaussure habituelle, telle qu'illustrée sur la figure 1.The invention is based on a ski boot comprising a usual shoe architecture, as illustrated in FIG. figure 1 .

Toutefois, cette chaussure de ski comprend une coque 10 modifiée, plus particulièrement représentée sur les figures 2, 3, 6, 7 et 10, qui comprend une échancrure arrière 11 au niveau de laquelle est disposé un élément d'appui arrière 20 mobile, que nous appellerons aussi plus simplement par sa dénomination anglo-saxonne « spoiler ». Dans ce mode de réalisation, cette échancrure 11 présente une forme trapézoïdale, voire en V ou en U, qui s'étend depuis l'extrémité supérieure de la coque jusqu'à proximité de l'axe de rotation 14 prévu pour un collier, non représenté. Cette échancrure est sensiblement centrée par rapport au plan médian longitudinal de la chaussure.However, this ski boot comprises a modified shell 10, more particularly represented on the Figures 2, 3 , 6, 7 and 10 , which comprises a rear notch 11 at which is disposed a movable rear support element 20, which we will also call more simply by its English name "spoiler". In this embodiment, this indentation 11 has a trapezoidal shape, even V or U, which extends from the upper end of the shell to near the axis of rotation 14 provided for a collar, no represent. This notch is substantially centered with respect to the longitudinal median plane of the shoe.

Le spoiler 20 est fixé sur la coque 10 en un point inférieur, par tout élément de fixation 12, comme un rivet par exemple. Il s'étend ensuite vers le haut de la coque, de sorte à recouvrir une surface suffisante qui correspond à l'échancrure 11 de la coque 10. Il comprend de plus deux surfaces latérales 23 qui peuvent chevaucher la surface arrière de la coque, au-delà des parois latérales 13 de l'échancrure 11, comme particulièrement représenté sur la figure 8.The spoiler 20 is fixed on the shell 10 at a lower point, by any fastener 12, such as a rivet for example. It then extends towards the top of the hull, so as to cover a sufficient surface which corresponds to the notch 11 of the hull 10. It furthermore comprises two lateral surfaces 23 which can overlap the rear surface of the hull, at the the side walls 13 of the notch 11, as particularly represented on the figure 8 .

Cette structure de coque est avantageuse puisque son spoiler 20 est mobile entre une première position prévue pour la pratique du ski dans laquelle il vient en butée sur la surface arrière de la coque 10 et une seconde position prévue pour la marche dans laquelle il s'écarte au moins partiellement vers l'arrière, en libérant l'échancrure 11 et en permettant au bas de jambe de se redresser pour faciliter ainsi la marche du skieur, comme représenté par les figures 7 et 9. En remarque, dans le mode de réalisation décrit, le mouvement du spoiler s'apparente à une rotation autour d'un axe transversal 15 délimité par l'arête inférieure 17 de l'échancrure 11.This hull structure is advantageous since its spoiler 20 is movable between a first position provided for the practice of the ski in which it abuts on the rear surface of the hull 10 and a second position provided for the step in which it departs at least partially to the rear, releasing the notch 11 and allowing the lower leg to straighten to facilitate the walk of the skier, as represented by the figures 7 and 9 . Note, in the embodiment described, the movement of the spoiler is similar to a rotation about a transverse axis 15 delimited by the lower edge 17 of the notch 11.

Les figures 4 et 5 représentent plus particulièrement le spoiler selon un mode de réalisation. Il se présente sous la forme d'un élément monolithique en matériau plastique, avantageusement formé par une seule étape d'injection plastique.The Figures 4 and 5 more particularly represent the spoiler according to one embodiment. It is in the form of a monolithic element made of plastic material, advantageously formed by a single plastic injection step.

La figure 4 illustre la face avant du spoiler 20, c'est-à-dire orientée vers l'intérieur de la coque 10. Il comprend une languette 21 dans sa partie inférieure, au sein de laquelle est prévue une ouverture 22 destinée à recevoir l'élément de fixation 12 mentionné ci-dessus. En remarque, cette languette 21 vient se positionner à l'intérieur de la coque 10, pour faciliter son maintien lors des poussées vers l'arrière exercées sur le spoiler par la jambe du skieur. En variante, elle pourrait toutefois être fixée sur la surface extérieure de la coque. Il comprend de plus deux surfaces latérales 23 destinées à venir en appui sur la surface arrière de la coque 10, puis une partie centrale en relief destinée à occuper l'espace libre de l'échancrure 11. Cette partie en relief forme deux surfaces latérales en relief 24 destinées à venir en appui contre les surfaces disposées dans l'épaisseur des parois latérales 13 de l'échancrure. Ces surfaces latérales en relief 24 sont orientées dans une direction sensiblement perpendiculaire aux surfaces latérales 23, ces deux surfaces réunies formant ainsi un épaulement. Ce dernier garantit le bon positionnement et le bon maintien du spoiler 20 relativement à la coque 10 selon les deux directions longitudinale x et transversale y dans la position de pratique du ski du spoiler. Cette construction de liaison par double butée de type épaulement entre le spoiler et la coque permet à cette dernière de présenter globalement une rigidité similaire à celle des coques de l'état de la technique lorsqu'elle est dans la position de pratique du ski, et que le spoiler est maintenu en position de butée sous l'effort de pression d'un collier. Pour optimiser cet effet, le spoiler est de préférence fabriqué dans un matériau rigide, de rigidité semblable à celle du reste de la coque.The figure 4 illustrates the front face of the spoiler 20, that is to say oriented towards the inside of the shell 10. It comprises a tongue 21 in its lower part, within which is provided an opening 22 intended to receive the element 12 mentioned above. As a note, this tongue 21 is positioned inside the shell 10, to facilitate its maintenance during the rearward thrusts exerted on the spoiler by the skier's leg. Alternatively, it could however be fixed on the outer surface of the hull. It further comprises two lateral surfaces 23 intended to abut on the rear surface of the shell 10, then a raised central portion intended to occupy the free space of the notch 11. This raised part forms two lateral surfaces in relief 24 intended to bear against the surfaces disposed in the thickness of the side walls 13 of the notch. These raised lateral surfaces 24 are oriented in a direction substantially perpendicular to the lateral surfaces 23, these two joined surfaces thus forming a shoulder. The latter guarantees the correct positioning and the good maintenance of the spoiler 20 relative to the hull 10 in both the longitudinal x and transverse directions y in the practice position of the ski of the spoiler. This construction of a double shoulder-type abutment connection between the spoiler and the hull allows the latter to have overall rigidity similar to that of the hulls of the state of the art when it is in the practice position of the ski, and that the spoiler is held in abutment position under the pressure force of a collar. To optimize this effect, the spoiler is preferably made of a rigid material, of stiffness similar to that of the rest of the hull.

La partie centrale en relief du spoiler 20 comprend des nervures de renfort 25, d'épaisseur sensiblement égale à l'épaisseur de la coque 10, pour se loger dans le volume libre de l'échancrure 11. De plus, la frontière entre la languette 21 et le reste du spoiler présente une zone de moindre épaisseur 27 s'étendant dans la direction transversale, destinée à un positionnement au niveau de l'arête inférieure 17 de l'échancrure 11. Elle forme ainsi un axe de rotation transversal 15 par la souplesse du matériau plastique combinée à son épaisseur réduite et à son appui au niveau d'une arête 17 de la coque. La surface arrière 26 du spoiler, visible sur la figure 5, présente une face lisse et continue, permettant de compléter la surface extérieure de la coque de manière continue dans sa première position de pratique du ski.The raised central portion of the spoiler 20 comprises reinforcing ribs 25, of thickness substantially equal to the thickness of the shell 10, to be housed in the free volume of the notch 11. In addition, the border between the tongue 21 and the remainder of the spoiler has a region of lesser thickness 27 extending in the transverse direction, intended for positioning at the lower edge 17 of the notch 11. It thus forms a transverse axis of rotation 15 by the flexibility of the plastic material combined with its reduced thickness and its support at a ridge 17 of the shell. The rear surface 26 of the spoiler, visible on the figure 5 , has a smooth and continuous face, allowing to complete the outer surface of the hull continuously in its first skiing position.

L'invention porte aussi sur une chaussure de ski, telle que celle décrite sur la figure 1, incorporant une coque selon l'invention, telle que décrite ci-dessus. Cette coque rigide 10, généralement composée d'un matériau plastique comme du polyuréthane de dureté comprise entre 40 et 60 Shore D ou par tout autre matériau de rigidité équivalente, et obtenue par injection, entoure le pied du skieur. Un collier rigide 3, obtenu de même par injection dans un matériau similaire à celui de la coque, est monté mobile en rotation autour d'un axe 14 au niveau d'une surface latérale de cette coque de sorte d'entourer le bas de jambe du skieur. Ces deux éléments rigides, formant une tige, sont dotés d'une échancrure centrale pour permettre un écartement facilitant le chaussage et le déchaussage. Les deux rabats formés de part et d'autre de cette échancrure sont reliés entre eux par des dispositifs de fixation permettant le rapprochement de ces rabats, la fermeture et le serrage de la tige rigide de la chaussure formée par la réunion de la coque et du collier. En remarque, une telle chaussure comprend ainsi l'assemblage d'au moins trois pièces distinctes, la coque, le spoiler et le collier. Enfin, un chausson de confort est inséré dans cette tige.The invention also relates to a ski boot, such as that described on the figure 1 , incorporating a shell according to the invention, as described above. This rigid shell 10, generally made of a plastic material such as polyurethane hardness between 40 and 60 Shore D or by any other material of equivalent stiffness, and obtained by injection, surrounds the skier's foot. A rigid collar 3, likewise obtained by injection into a material similar to that of the shell, is rotatably mounted about an axis 14 at a lateral surface of this shell so as to surround the lower leg of the skier. These two rigid elements, forming a rod, are provided with a central notch to allow a spacing facilitating donning and heaving. The two flaps formed on either side of this indentation are interconnected by fixing devices allowing the approximation of these flaps, the closure and tightening of the rigid upper of the shoe formed by the union of the shell and the necklace. As a remark, such a shoe thus comprises the assembly of at least three separate parts, the shell, the spoiler and the collar. Finally, a comfort slipper is inserted in this rod.

Le fonctionnement de la chaussure de ski selon l'invention va maintenant être explicité. Dans une première position de pratique du ski, la chaussure est serrée, par l'intermédiaire des dispositifs de fixation, et la jambe du skieur se trouve bloquée et serrée en position inclinée de pratique du ski. Dans cette configuration, le collier vient en appui sur la surface extérieure de la coque et maintient le spoiler dans sa première position de pratique du ski, telle qu'explicitée précédemment et plus particulièrement représentée sur les figures 6 et 8. La coque et son spoiler en position de pratique du ski représentent ainsi un ensemble de forme similaire aux coques de l'état de la technique, qui convient parfaitement pour la pratique du ski.The operation of the ski boot according to the invention will now be explained. In a first ski practice position, the boot is tightened by means of the binding devices, and the skier's leg is locked and tightened in an inclined skiing position. In this configuration, the collar bears on the outer surface of the hull and maintains the spoiler in its first ski practice position, as explained above and more particularly shown on the figures 6 and 8 . The hull and its spoiler in position Ski practice thus represent a set of similar shape to the hulls of the state of the art, which is perfect for skiing.

Lorsque le skieur a fini de skier et a besoin de marcher, il desserre les dispositifs de fixation de sa chaussure, ce qui permet de desserrer sa jambe, et de lui laisser suffisamment de liberté pour se redresser. Dans ce mouvement, la partie arrière du bas de jambe du skieur vient en appui sur le spoiler et le repousse vers l'arrière par rapport à la coque, l'accompagnant en rotation arrière avec éventuellement le collier, notamment si ce dernier peut être déverrouillé pour libérer totalement sa possibilité de rotation arrière. Grâce au spoiler mobile et à l'échancrure arrière de la coque, la jambe du skieur acquière la possibilité de se redresser beaucoup plus que dans les chaussures traditionnelles, puisque la coque ne bloque plus une telle liberté, pour atteindre ainsi un confort de marche fortement accru. On note que ce mouvement de redressement de la jambe du skieur est non seulement possible par la présence de l'échancrure libérée par le spoiler mais aussi par le fait que les deux surfaces de la coque autour de l'échancrure acquièrent une flexibilité qui leur permet de se déformer sous la pression arrière de la jambe.When the skier has finished skiing and needs to walk, he loosens the attachments of his shoe, which allows him to loosen his leg, and leave him enough freedom to straighten up. In this movement, the rear part of the lower leg of the skier bears on the spoiler and pushes it backwards relative to the hull, accompanying it in reverse rotation with possibly the collar, especially if the latter can be unlocked to totally free the possibility of rear rotation. Thanks to the mobile spoiler and the rear notch of the hull, the skier's leg acquires the possibility of straightening up much more than in the traditional shoes, since the hull no longer blocks such freedom, to thus reach a comfort of walking strongly. increased. It is noted that this movement of recovery of the skier's leg is not only possible by the presence of the notch released by the spoiler but also by the fact that the two surfaces of the shell around the notch acquire a flexibility that allows them to deform under the back pressure of the leg.

En remarque, cette solution de l'invention est naturellement compatible avec toutes les tiges de l'état de la technique, et est notamment particulièrement complémentaire avec les solutions permettant de déverrouiller le positionnement incliné du collier par rapport à la coque, pour libérer au mieux la possibilité de mouvement arrière de la jambe du skieur en vue de la marche.As a remark, this solution of the invention is naturally compatible with all the rods of the state of the art, and is particularly particularly complementary with the solutions for unlocking the inclined positioning of the collar relative to the shell, to release at best the possibility of backward movement of the skier's leg for the purpose of walking.

Naturellement, l'invention ne se limite pas à la coque de chaussure de ski détaillée ci-dessus à titre d'exemple. En variante, la coque pourrait présenter une autre forme, et l'échancrure pourrait occuper toute autre surface et toute autre forme. De préférence, elle s'étend sur au moins un quart, voire un tiers, de la hauteur de la coque, et/ou sur au moins la moitié de la largeur de l'ouverture supérieure de la coque prévue pour insérer le pied, mesurée en position au repos de la coque, pour offrir suffisamment de liberté à la jambe du skieur. Toutefois, il est aussi envisageable de choisir une échancrure se présentant sous la forme d'une fente étroite mais de longueur importante.Naturally, the invention is not limited to the ski boot shell detailed above by way of example. Alternatively, the hull could have another shape, and the notch could occupy any other surface and any other shape. Preferably, it extends over at least a quarter, or even a third, of the height of the shell, and / or over at least half the width of the upper opening of the shell intended to insert the foot, measured in the rest position of the hull, to provide enough freedom to the skier's leg. However, it is also possible to choose an indentation in the form of a narrow slot but of significant length.

De même, le spoiler pourrait présenter une autre forme, notamment au niveau de ses surfaces d'appui formant une butée de type épaulement sur la coque. En effet, toute autre configuration permettant d'obtenir une butée dans les deux directions longitudinale x et transversale y pourrait convenir, même par l'intermédiaire d'une seule surface d'appui inclinée, la coque présentant une surface inclinée correspondante au niveau de ses arêtes latérales 13. En variante encore, l'épaulement décrit pourrait présenter une autre forme. Selon une variante simplifiée, la butée du spoiler pourrait n'exister que dans la seule direction longitudinale, pour garantir que le spoiler ne passe pas au travers de l'échancrure 11 vers l'intérieur de la coque, où il risquerait de heurter la jambe du skieur. De plus, le spoiler pourrait se présenter dans tout autre matériau, et/ou se présenter en plusieurs éléments fixés entre eux. Il pourrait se fixer différemment sur la coque, par exemple par un point de fixation latéral, positionné au niveau d'une des arêtes latérales de l'échancrure sur la surface arrière de la coque, auquel cas son mouvement pourrait par exemple s'approcher d'une rotation autour d'un axe vertical. Il pourrait ainsi être mobile selon un axe de rotation de toute autre direction, mais de préférence positionné aux abords de l'échancrure, au niveau de la surface arrière de la coque. En variante, il pourrait être lié à la coque par tout autre moyen de fixation, comme une soudure ou un collage par exemple, et/ou avec un seul ou plusieurs points de fixation ou une ligne ou surface de fixation. Dans tous ces cas, cette fixation se trouve de préférence positionnée au niveau de la surface arrière de la coque, de préférence au voisinage de l'échancrure, et non pas par exemple sur une surface latérale de la coque. Son mouvement pourrait être différent d'une simple rotation. Il pourrait aussi ne pas fermer complètement l'échancrure en position de pratique du ski. Il pourrait présenter toute autre forme, mais comprenant de préférence une surface inférieure ou égale à deux fois la surface de l'échancrure. De même, sa hauteur reste de préférence limitée, ne dépassant pas de plus de 5 cm la hauteur maximale de la coque, c'est-à-dire de hauteur inférieure ou égale à la hauteur de la coque augmentée de 5 cm.Similarly, the spoiler could have another shape, especially at its bearing surfaces forming a shoulder-type abutment on the shell. Indeed, any other configuration to obtain a stop in the two longitudinal and transverse directions y could agree, even through a single inclined bearing surface, the shell having a corresponding inclined surface at its Lateral edges 13. As a further variant, the shoulder described could have another shape. According to a simplified variant, the abutment of the spoiler could only exist in the only longitudinal direction, to ensure that the spoiler does not pass through the notch 11 to the inside of the hull, where it could hit the leg of the skier. In addition, the spoiler could be in any other material, and / or be in several elements fixed together. It could be fixed differently on the hull, for example by a lateral attachment point, positioned at one of the lateral edges of the notch on the rear surface of the hull, in which case its movement could for example approach the a rotation about a vertical axis. It could thus be movable along an axis of rotation of any other direction, but preferably positioned near the notch, at the rear surface of the hull. Alternatively, it could be bonded to the shell by any other means of attachment, such as a weld or gluing for example, and / or with a single or several attachment points or a line or attachment surface. In all these cases, this attachment is preferably positioned at the rear surface of the shell, preferably in the vicinity of the notch, and not for example on a side surface of the shell. His movement could be different from a simple rotation. It may also not completely close the notch in the ski practice position. It could have any other shape, but preferably comprising an area less than or equal to twice the area of the notch. Similarly, its height is preferably limited, not exceeding by more than 5 cm the maximum height of the hull, that is to say, height less than or equal to the height of the hull increased by 5 cm.

De plus, une chaussure pourrait comprendre plusieurs spoilers 20 de propriété différente, par exemple de dureté différente, pour permettre à un skieur de choisir le spoiler parmi la pluralité existant représentant le meilleur compromis, entre les deux cas extrêmes d'un spoiler très rigide favorable au ski et moins confortable, par exemple pour la pratique de la compétition, et au contraire un spoiler très souple, plus confortable mais moins performant pour la pratique du ski, bien adapté pour les débutants. Le choix du spoiler permet ainsi de définir la rigidité de la coque en position de pratique du ski. Pour cela, le spoiler est naturellement monté de manière amovible sur la coque, c'est-à-dire par un dispositif permettant son retrait facile, de préférence sans outil. Au contraire, le spoiler pourrait être non amovible, c'est-à-dire fixé par un dispositif non prévu pour le retrait du spoiler, lequel retrait serait soit impossible soit très difficile et non convivial.In addition, a shoe could comprise several spoilers 20 of different properties, for example of different hardness, to allow a skier to choose the spoiler among the existing plurality representing the best compromise, between the two extreme cases of a very rigid spoiler favorable skiing and less comfortable, for example for the practice of competition, and on the contrary a spoiler very flexible, more comfortable but less efficient for the practice of skiing, well suited for beginners. The choice of the spoiler thus makes it possible to define the rigidity of the hull in the practice position of the ski. For this, the spoiler is naturally mounted removably on the shell, that is to say by a device for easy removal, preferably without tools. On the contrary, the spoiler could be non-removable, that is to say fixed by a device not provided for the removal of the spoiler, which withdrawal would be either impossible or very difficult and not user friendly.

L'invention porte aussi sur un procédé de fabrication d'une coque de chaussure de ski, comprenant une première étape de fabrication d'une coque rigide externe par injection de matériau plastique rigide, et comprenant une seconde étape de fabrication d'un spoiler puis une étape de fixation du spoiler sur la coque rigide externe, de manière mobile au niveau d'une échancrure arrière. L'étape de fabrication du spoiler peut consister en une seconde étape d'injection d'un matériau plastique. Comme cela a été vu ci-dessus, le procédé peut comprendre une troisième étape d'injection d'un matériau plastique pour former un second spoiler destiné à la même coque, aux propriétés mécaniques différentes de celles du premier spoiler.The invention also relates to a method of manufacturing a ski boot shell, comprising a first step of manufacturing an external rigid shell by injection of rigid plastic material, and comprising a second step of manufacturing a spoiler and a step of fixing the spoiler on the outer rigid shell, movably at a rear notch. The stage of manufacture of the spoiler may consist of a second stage of injection of a plastic material. As seen above, the method may comprise a third step of injecting a plastic material to form a second spoiler for the same shell, with mechanical properties different from those of the first spoiler.

Une telle solution de l'invention offre l'avantage d'une grande facilité pour la fabrication d'une chaussure, puisque la coque diffère des coques habituelles uniquement par l'ajout d'une échancrure. Son moule de fabrication est donc facile et peu coûteux à fabriquer. De plus, le spoiler présente une forme relativement simple, facile et peu coûteuse à fabriquer.Such a solution of the invention offers the advantage of great ease for the manufacture of a shoe, since the shell differs from the usual shells only by the addition of a notch. Its manufacturing mold is easy and inexpensive to manufacture. In addition, the spoiler has a relatively simple shape, easy and inexpensive to manufacture.

Claims (17)

  1. A ski boot shell (10), comprising a notch (11) in the rear upper portion thereof and a rear bearing element (20) movably connected relative to the shell (10), the shell being characterized in that the rear bearing element is capable of occupying a first position in which it abuts against at least one surface of the shell to at least partially close the notch (11) and favors skiing, and a second position withdrawn backward to allow the leg of a skier to be straightened in a walking phase.
  2. The ski boot shell (10) according to the preceding claim, characterized in that its rear bearing element (20) further comprises two side surfaces (23) that overlap the rear surface of the shell, beyond side walls (13) of the notch (11) in the first position.
  3. The ski boot shell (10) according to claim 1 or 2, characterized in that its rear bearing element (20) further comprises a raised central portion intended to occupy the free space of the notch (11).
  4. The ski boot shell (10) according to the preceding claim, characterized in that this raised portion forms two raised side surfaces (24) intended to bear against the surfaces arranged in the thickness of the side walls (13) of the notch.
  5. The ski boot shell (10) according to one of the preceding claims, characterized in that the two surfaces of the shell around the notch (11) acquire a flexibility that allows them to deform under the rear pressure of the leg in the second position of the rear bearing element (20).
  6. The ski boot shell (10) according to one of the preceding claims, characterized in that its notch (11) assumes a trapezoidal shape or is V- or U-shaped, and extends from the upper end of the shell, or characterized in that its notch (11) extends over at least one quarter, or even one third, of the height of the shell and/or over at least half the width of its upper opening.
  7. The ski boot shell (10) according to one of the preceding claims, characterized in that its rear bearing element (20) is fastened to the shell at its rear surface and/or near the notch (11), or characterized in that its rear bearing element (20) is rotatably mounted around an axis arranged near the notch (11) and/or around a horizontal or vertical axis.
  8. The ski boot shell (10) according to the preceding claim, characterized in that its rear bearing element (20) is rotatably mounted and comprises a tongue (21) fastened on the shell, and in that it comprises an area forming an axis of rotation at the border between the tongue (21) and the rest of the rear bearing element (20).
  9. The ski boot shell (10) according to one of the preceding claims, characterized in that its rear bearing element (20) abuts on the shell in its first ski position, which prevents it from moving both in the longitudinal direction (x), forward, and the transverse direction (y).
  10. The ski boot shell (10) according to the preceding claim, characterized in that the rear bearing element (20) has a shoulder (23, 24) or an inclined surface to abut on one or more surface(s) of the shell (10).
  11. The ski boot shell (10) according to one of the preceding claims, characterized in that its rear bearing element (20) is removable.
  12. The ski boot shell (10) according to the preceding claim, characterized in that it comprises at least two rear bearing elements (20) with different flexibilities to allow a skier to fasten the rear bearing element shell (20) that best suits him.
  13. A ski boot, characterized in that it comprises an upper comprising a shell (10) and a collar (3) hinged on the shell, and a comfort inner boot (6) inserted in the upper, characterized in that the shell (10) is according to one of the preceding claims.
  14. The ski boot according to the preceding claim, characterized in that the upper comprises three separate parts, the shell, the collar and the rear bearing elements (20).
  15. The ski boot according to the preceding claim, characterized in that the rear bearing elements (20) is independent from the collar which is able to bear on its outer surface.
  16. The ski boot according to one of claims 13 to 15, characterized in that it comprises a locking/unlocking device for the rear incline of the collar in relation to the shell (10).
  17. A method for manufacturing a shell according to one of claims 1 to 12, characterized in that it comprises a first step for producing a shell (10) comprising a rear notch (11) by injecting plastic material, and in that it comprises a second step for producing a rear bearing element (20), then a step for fastening that rear bearing element (20) on the shell (10) at the notch thereof.
EP20110425241 2011-09-26 2011-09-26 Shell of a ski boot with spoiler Active EP2572599B1 (en)

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EP20110425241 EP2572599B1 (en) 2011-09-26 2011-09-26 Shell of a ski boot with spoiler
US13/627,534 US10531703B2 (en) 2011-09-26 2012-09-26 Ski boot shell with spoiler

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ES2906567T3 (en) * 2015-05-06 2022-04-19 Ober Alp Spa Ski boot provided with an improved ski-gear selection mechanism
IT201800007611A1 (en) * 2018-07-30 2020-01-30 Felice Bani SKI BOOT
USD966667S1 (en) 2019-10-11 2022-10-18 Target Brands, Inc. Footwear
USD934547S1 (en) 2019-10-11 2021-11-02 Target Corporation Outsole tread
USD986570S1 (en) 2019-10-11 2023-05-23 Target Brands, Inc. Footwear

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EP2572599A1 (en) 2013-03-27
US20130074373A1 (en) 2013-03-28

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