EP1145742B1 - Alpine ski - Google Patents

Alpine ski Download PDF

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Publication number
EP1145742B1
EP1145742B1 EP01420085A EP01420085A EP1145742B1 EP 1145742 B1 EP1145742 B1 EP 1145742B1 EP 01420085 A EP01420085 A EP 01420085A EP 01420085 A EP01420085 A EP 01420085A EP 1145742 B1 EP1145742 B1 EP 1145742B1
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EP
European Patent Office
Prior art keywords
ski
zone
reduction
rigidity
runner
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
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EP01420085A
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German (de)
French (fr)
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EP1145742A1 (en
Inventor
M. Daniel Cuzzit
M. Pierre Billon
M. Eric Restani
M. Thierry Schrobiltgen
Milena Stefanova
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Skis Rossignol SA
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Skis Rossignol SA
Rossignol SA
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Publication of EP1145742A1 publication Critical patent/EP1145742A1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/003—Non-swivel sole plate fixed on the ski

Definitions

  • the present invention relates to an alpine ski.
  • Alpine skiing has a front area called the tip area, a back area called the heel area and an intermediate zone called the skate zone.
  • Figure 1 of the accompanying schematic drawing shows a ski alpine seen in profile in which the tip zone, skate zone and heel zone are designated by the references 2, 3 and 4. It also appears from this figure 1 that the thickness of the ski varies over the length thereof, the thickness being significantly higher in the skate area than in the areas end, i.e. tip and heel areas. Indeed, the fixing of a The skier's shoe is mounted in the skate area. So this is the area which must be the most resistant, and it is through this skate area that passes most of the efforts between the snow and the skier's shoe.
  • the stiffness of a ski is measured as follows: the ski is laid flat between two distant supports of a length L (from 200 to 600 mm), a load F between 40 and 60 kg is applied at mid-distance of these supports. The deformation of the ski under this load is then measured (arrow). Then the ski is moved in order to carry out this measurement on another zone (displacement between 50 to 200 mm). The different values arrow allow to define the stiffness curve shown in figure 2.
  • the object of the invention is to define the stiffness of a bare ski in anticipating the influence of the binding-shoe assembly necessary for the use of skiing.
  • the stiffness that is to say the resistance to bending in the longitudinal direction of the ski, of the part center of the skate area is less than the stiffness in both parts end of the pad area, i.e. the connecting parts with the front and rear zones respectively.
  • This ski therefore differs from a classic alpine ski in which the stiffness curve, i.e. the resistance to bending in the direction longitudinal of the ski placed flat between two supports, is practically a function of the variation in thickness of the ski, that is to say that the stiffness is generally increasing from the extremities towards the central zone of the skate.
  • the stiffness curve i.e. the resistance to bending in the direction longitudinal of the ski placed flat between two supports
  • the stiffness is at least 5% lower than the lowest stiffness of the parts end of the skate area.
  • ski structures whether a ski with a traditional structure, that is to say comprising a set lower, resistant longitudinal walls called edges, arranged on either side of a central core, and an upper assembly, of a so-called ski with shells, that is to say comprising an outer casing of material synthetic reinforced on the inside of the ski by at least one layer of laminated fabric, forming the upper wall and the side walls of the ski and the edges of which rest directly or indirectly on the edges, or still a ski with a mixed structure, that is to say comprising a hull of which the edges rest on longitudinal reinforcing elements, present at least in the central part or skate area of the ski.
  • the reduction in stiffness in the skate area of the ski is obtained by a localized decrease in the height or thickness of the edges.
  • the localized decrease in edge height can be total, and result in an interruption in the central part of the skate area.
  • the reduction in stiffness in the central part of the skate area is obtained by a localized reduction the width of the upper part of the ski, the lower part comprising the sole and the remaining edges of traditional width.
  • the reduction in stiffness in the central part of the skate area is obtained by bringing together localized upper and / or lower reinforcements and the neutral fiber of the ski.
  • the reduction in stiffness in the central part of the skate area is obtained by a localized decrease in the thickness of the ski.
  • the ski in the case where it has a structure comprising a material shell synthetic reinforced on the inside of the ski by at least one layer of laminated fabric, forming the upper wall and part of the walls side of the ski and whose edges rest on longitudinal elements reinforcement visible on the side walls of the ski, and which take support directly or indirectly on the edges, reducing the stiffness in the skate area of the ski is obtained by a decrease in the height or by a localized deletion of the longitudinal elements of reinforcement in favor of an increase in height of the side walls of the hull in this area.
  • the length of the reduction in stiffness is of the order of 200 mm to 600 mm, and preferably between 400 and 500 mm.
  • FIG. 3 represents the stiffness curve of a ski according to the invention, in which the length of the ski L has been plotted on the abscissa and in which the stiffness has been carried along the ordinate axis.
  • the stiffness in the central part C of the pad P is less than the stiffness in the end parts E and F of the skid zone, i.e. the connecting parts with the spatula zones S and heel T respectively.
  • Figures 4 and 5 show a ski having a structure shell, that is to say comprising a shell 5 of synthetic material, reinforced on the inside of the ski by at least one layer of fabric laminate, not shown in the drawing, forming the upper wall 6 and the side walls 7, 8 of the ski and the edges of which rest on the edges 11.
  • This ski has a lower assembly incorporating a sliding sole 9 disposed between the edges, as well as a central core 10 resting on the lower assembly and forming the interior of the ski. Reinforcement elements are provided, which have not been shown in the drawing insofar as they do not relate to the invention.
  • the part center of the skate area is used for mounting, on the upper face of the ski, a stop 12 and a heel piece 13 constituting the attachment of a skier's shoe.
  • the reduction in stiffness in the central part of the skate area is obtained by a localized reduction in the width of the hull made on both sides and other side of the median longitudinal axis of the ski. This translates, as shown in the drawing, by recessed zones 14 obtained by an increase of the inclination of the side walls 8 in this zone relative to the walls side 7 of the ski over the rest of the length thereof. It emerges from Figures 4 and 5 that in the central part of the skate area the width of the upper zone 6 is reduced.
  • FIGS. 6 and 7 show a second ski, which is also a ski with shell structure, having the same general characteristics than the first ski. The same elements are therefore designated by the same references than before.
  • the decrease in the stiffness in the part center of the skate area is obtained by a localized decrease in the thickness of the ski, in a zone 15 located between the stop 12 and the heel piece 13.
  • FIGS. 8 to 11 show a third embodiment of a ski according to the invention.
  • This ski has a hull in synthetic material 16, reinforced on the inside of the ski, that is to say on the side of the core 10 by at least one layer of laminated fabric, not shown in the drawing.
  • the shell 16 forms the upper wall 17 and a part of the side walls 18, and its edges rest on elements longitudinal reinforcement 19, visible on the side walls of the ski, and which rest on the edges 11.
  • This structure is clearly visible Figures 8 and 11.
  • the decrease in stiffness in the central part of the ski skate area is obtained by localized removal of elements longitudinal reinforcement 19 in favor of an increase in the walls side 18 of the shell, as can be seen in FIGS. 8, 9 and 10.
  • the lower edges of the shell 16 rest directly on the edges.
  • a variant of this ski would consist of decrease the height of the reinforcing elements in the central part of the skate area, without completely removing them.
  • FIGS 12 to 15 show another ski in which the same elements are designated by the same references as previously.
  • the core 10 has, in the central part of the skate area, a cavity 20.
  • a shim 24 is designed to match the shape of the cavity 20.
  • FIGS 13 to 15 schematically represent a ski in accordance with this embodiment constituted as follows: after placing in a mold, the sole 9, the edges 11 and the core 10, there is a reinforcing fabric 22, so that it matches the shape of the core 10 so of the cavity 20, then we have the wedge 24 to fill the cavity 20, and finally this cap is capped by the shell 23.
  • This structure reduces the stiffness of the ski in the central part of the skate area of it. This reduction in stiffness could be obtained in variants not using a shim, but in which the upper reinforcement 22 or the lower reinforcement, not shown, approaches neutral fiber of the ski, in the area where the stiffness must be decreased.
  • the invention provides a great improvement to the existing technique by providing a ski whose structure, the term structure being taken in the broad sense and being able to designate both an arrangement of materials and dimensions, allows to homogenize the stiffness in the central part of the skate area, without require the implementation of complex means, and on the contrary, in certain forms of execution, by reducing the quantity of material and by then the weight and the cost price of the ski.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

The alpine ski comprises a tip zone (2), a heel zone (4) and an intermediate support zone (3). The support zone receives a stop (12) and a heel piece (13) constituting the ski boot fixing. The resistance to bending in the ski longitudinal direction of the central part of the support zone is less than that in the two end parts of the support zone.

Description

La présente invention a pour objet un ski alpin. Un ski alpin comporte une zone avant dite zone spatule, une zone arrière dite zone talon et une zone intermédiaire dite zone patin.The present invention relates to an alpine ski. Alpine skiing has a front area called the tip area, a back area called the heel area and an intermediate zone called the skate zone.

La figure 1 du dessin schématique annexé représente un ski alpin vu de profil dans lequel les zone spatule, zone patin et zone talon sont désignées par les références 2, 3 et 4. Il ressort également de cette figure 1 que l'épaisseur du ski varie sur la longueur de celui-ci, l'épaisseur étant sensiblement supérieure dans la zone patin à celle dans les zones d'extrémité, c'est-à-dire zones spatule et talon. En effet, la fixation d'une chaussure du skieur est montée dans la zone patin. C'est donc cette zone qui doit être la plus résistante, et c'est par cette zone patin que passe l'essentiel des efforts entre la neige et la chaussure du skieur.Figure 1 of the accompanying schematic drawing shows a ski alpine seen in profile in which the tip zone, skate zone and heel zone are designated by the references 2, 3 and 4. It also appears from this figure 1 that the thickness of the ski varies over the length thereof, the thickness being significantly higher in the skate area than in the areas end, i.e. tip and heel areas. Indeed, the fixing of a The skier's shoe is mounted in the skate area. So this is the area which must be the most resistant, and it is through this skate area that passes most of the efforts between the snow and the skier's shoe.

Il résulte de cette structure que la raideur d'un ski, c'est-à-dire la résistance à la flexion n'est pas constante sur toute la longueur du ski. Comme montré à la figure 2 qui représente une courbe dans laquelle la longueur du ski est portée suivant l'axe des abscisses et la raideur est portée suivant l'axe des ordonnées, il est visible que la raideur du ski est beaucoup plus importante dans la zone patin (P) que dans les zones spatule (S) et talon (T). Le fait de réaliser le montage de la fixation dans la zone patin et l'utilisation de chaussures de ski ayant une semelle très rigide, augmente encore la raideur par rapport à la raideur du ski considéré seule. Il en résulte une augmentation de la difficulté pour réaliser la mise en courbe du ski.It follows from this structure that the stiffness of a ski, that is to say the flexural strength is not constant over the entire length of the ski. As shown in Figure 2 which represents a curve in which the length of the ski is carried along the abscissa axis and the stiffness is carried along the ordinate axis, it is visible that the stiffness of the ski is much larger in the skate area (P) than in the tip areas (S) and heel (T). The fact of mounting the binding in the area skate and the use of ski boots with a very rigid sole, further increases the stiffness compared to the stiffness of the ski considered alone. he this results in an increase in the difficulty to achieve the curve ski.

La raideur d'un ski est mesurée de la façon suivante : le ski est posé à plat entre deux appuis distants d'une longueur L (de 200 à 600 mm), une charge F comprise entre 40 et 60 kg est appliquée à mi-distance de ces appuis. La déformation du ski sous cette charge est alors mesurée (flèche). Puis le ski est déplacé afin d'effectuer cette mesure sur une autre zone (déplacement entre 50 à 200 mm). Les différentes valeurs de flèche permettent de définir la courbe de raideur montrée à la figure 2.The stiffness of a ski is measured as follows: the ski is laid flat between two distant supports of a length L (from 200 to 600 mm), a load F between 40 and 60 kg is applied at mid-distance of these supports. The deformation of the ski under this load is then measured (arrow). Then the ski is moved in order to carry out this measurement on another zone (displacement between 50 to 200 mm). The different values arrow allow to define the stiffness curve shown in figure 2.

Pour remédier à cet apport de rigidité par l'ensemble chaussure-fixation dans la zone patin, il a été imaginé de monter la fixation, c'est-à-dire une butée et une talonnière non pas directement sur le ski, mais sur une plaque intermédiaire fixée localement sur le ski par exemple à l'une de ses extrémités et montée avec possibilité de glissement sur le ski par son autre extrémité, ce qui permet un débridage. Une telle plaque est connue par le document CH 671 887. Cette fonction de débridage permet effectivement de supprimer l'influence des ressorts de tension de la talonnière sur la semelle de la chaussure augmentant le cintrage du ski, mais une telle plaque contribue malgré tout, du fait de sa rigidité propre, à augmenter la raideur du ski. Il est également connu de réaliser une plaque pour le montage d'une fixation de chaussure qui comporte des encoches favorisant sa flexion. Une telle plaque est connue par le document FR 2 763 861.To remedy this addition of rigidity by the shoe-binding assembly in the skate area, it was imagined to mount the binding, that is to say a stop and a heel not directly on the ski, but on an intermediate plate fixed locally on the ski for example to one of its ends and mounted with the possibility of sliding on the ski by its other end, which allows unlocking. Such a plate is known by document CH 671 887. This unlocking function allows actually remove the influence of the tension springs from the heel piece on the sole of the shoe increasing the bending of the ski, but such a plate nevertheless contributes, due to its inherent rigidity, to increase the stiffness of the ski. It is also known to make a plate for mounting a shoe binding which has notches favoring its flexion. Such a plate is known from the document FR 2,763,861.

Toutefois, en rendant de la souplesse à cette plaque, on a perdu la notion de débridage ; de plus, cette solution nécessite la mise en oeuvre d'une plaque qui augmente le poids de l'ensemble ski-fixation.However, by making the plate flexible, we lost the concept of unleashing; moreover, this solution requires the implementation a plate which increases the weight of the ski-binding assembly.

Le but de l'invention est de définir la raideur d'un ski nu en anticipant l'influence de l'ensemble fixation-chaussure nécessaire à l'utilisation du ski.The object of the invention is to define the stiffness of a bare ski in anticipating the influence of the binding-shoe assembly necessary for the use of skiing.

A cet effet, dans le ski alpin qu'elle concerne, la raideur, c'est-à-dire la résistance à la flexion dans le sens longitudinal du ski, de la partie centrale de la zone patin est inférieure à la raideur dans les deux parties d'extrémité de la zone patin, c'est-à-dire les parties de raccordement avec les zones avant et arrière respectivement.For this purpose, in the alpine skiing which it concerns, the stiffness, that is to say the resistance to bending in the longitudinal direction of the ski, of the part center of the skate area is less than the stiffness in both parts end of the pad area, i.e. the connecting parts with the front and rear zones respectively.

Ce ski se distingue donc d'un ski alpin classique dans lequel la courbe de raideur, c'est-à-dire la résistance à la flexion dans le sens longitudinal du ski placé à plat entre deux appuis, est pratiquement fonction de la variation d'épaisseur du ski, c'est-à-dire que la raideur est globalement croissante des extrémités vers la zone centrale du patin.This ski therefore differs from a classic alpine ski in which the stiffness curve, i.e. the resistance to bending in the direction longitudinal of the ski placed flat between two supports, is practically a function of the variation in thickness of the ski, that is to say that the stiffness is generally increasing from the extremities towards the central zone of the skate.

Avantageusement, dans la partie centrale de la zone patin, la raideur est inférieure d'au moins 5 % à la raideur la plus basse des parties d'extrémité de la zone patin.Advantageously, in the central part of the skate area, the stiffness is at least 5% lower than the lowest stiffness of the parts end of the skate area.

Le fait de réduire la raideur dans la partie centrale de la zone patin, va permettre d'homogénéiser la raideur sur la longueur de la zone patin, après avoir tenu compte de la rigidification procurée par le montage de la chaussure à l'intérieur de la fixation.Reducing stiffness in the central part of the area pad, will allow to homogenize the stiffness over the length of the area shoe, after taking into account the stiffening provided by the mounting of the shoe inside the binding.

Différentes solutions peuvent être mises en oeuvre pour obtenir cette diminution de raideur, avec différentes structures de ski, qu'il s'agisse d'un ski de structure traditionnelle, c'est-à-dire comportant un ensemble inférieur, des parois longitudinales résistantes appelées chants, disposées de part et d'autre d'un noyau central, et un ensemble supérieur, d'un ski dit à coques, c'est-à-dire comportant une enveloppe extérieure en matière synthétique renforcée du côté intérieur du ski par au moins une couche de tissu stratifié, formant la paroi supérieure et les parois latérales du ski et dont les bords reposent directement ou indirectement sur les carres, ou encore d'un ski à structure mixte, c'est-à-dire comportant une coque dont les bords reposent sur des éléments longitudinaux de renforcement, présents au moins dans la partie centrale ou zone de patin du ski.Different solutions can be implemented to obtain this reduction in stiffness, with different ski structures, whether a ski with a traditional structure, that is to say comprising a set lower, resistant longitudinal walls called edges, arranged on either side of a central core, and an upper assembly, of a so-called ski with shells, that is to say comprising an outer casing of material synthetic reinforced on the inside of the ski by at least one layer of laminated fabric, forming the upper wall and the side walls of the ski and the edges of which rest directly or indirectly on the edges, or still a ski with a mixed structure, that is to say comprising a hull of which the edges rest on longitudinal reinforcing elements, present at least in the central part or skate area of the ski.

Suivant une première forme d'exécution de ce ski, dans le cas où celui-ci possède des éléments de renforcement longitudinaux apparents sur les parois latérales du ski et appelés chants, la diminution de raideur dans la zone patin du ski est obtenue par une diminution localisée de la hauteur ou de l'épaisseur des chants.According to a first embodiment of this ski, in the case where it has visible longitudinal reinforcing elements on the side walls of the ski and called edges, the reduction in stiffness in the skate area of the ski is obtained by a localized decrease in the height or thickness of the edges.

Dans ce cas, la diminution localisée de la hauteur des chants peut être totale, et se traduire par une interruption dans la partie centrale de la zone patin.In this case, the localized decrease in edge height can be total, and result in an interruption in the central part of the skate area.

Suivant une deuxième possibilité, la diminution de raideur dans la partie centrale de la zone patin est obtenue par une réduction localisée de la largeur de la partie haute du ski, la partie basse comportant la semelle et les carres restant de largeur traditionnelle.According to a second possibility, the reduction in stiffness in the central part of the skate area is obtained by a localized reduction the width of the upper part of the ski, the lower part comprising the sole and the remaining edges of traditional width.

Suivant une troisième possibilité, la diminution de raideur dans la partie centrale de la zone patin est obtenue par un rapprochement localisé des renforts supérieurs et/ou inférieurs et de la fibre neutre du ski.According to a third possibility, the reduction in stiffness in the central part of the skate area is obtained by bringing together localized upper and / or lower reinforcements and the neutral fiber of the ski.

Suivant une autre possibilité, la diminution de raideur dans la partie centrale de la zone patin est obtenue par une diminution localisée de l'épaisseur du ski.According to another possibility, the reduction in stiffness in the central part of the skate area is obtained by a localized decrease in the thickness of the ski.

Selon une forme d'exécution du ski selon l'invention, dans le cas où il possède une structure comportant une coque en matière synthétique renforcée du côté de l'intérieur du ski par au moins une couche de tissu stratifié, formant la paroi supérieure et une partie des parois latérales du ski et dont les bords reposent sur des éléments longitudinaux de renforcement apparents sur les parois latérales du ski, et qui prennent appui directement ou indirectement sur les carres, la diminution de la raideur dans la zone patin du ski est obtenue par une diminution de la hauteur ou par une suppression localisée des éléments longitudinaux de renforcement au profit d'une augmentation de hauteur des parois latérales de la coque dans cette zone. According to one embodiment of the ski according to the invention, in the case where it has a structure comprising a material shell synthetic reinforced on the inside of the ski by at least one layer of laminated fabric, forming the upper wall and part of the walls side of the ski and whose edges rest on longitudinal elements reinforcement visible on the side walls of the ski, and which take support directly or indirectly on the edges, reducing the stiffness in the skate area of the ski is obtained by a decrease in the height or by a localized deletion of the longitudinal elements of reinforcement in favor of an increase in height of the side walls of the hull in this area.

Quelle que soit la structure du ski, la longueur de la zone de diminution de raideur est de l'ordre de 200 mm à 600 mm, et de préférence comprise entre 400 et 500 mm.Whatever the structure of the ski, the length of the reduction in stiffness is of the order of 200 mm to 600 mm, and preferably between 400 and 500 mm.

De toute façon l'invention sera bien comprise, à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemples non limitatifs, plusieurs formes d'exécution de ce ski.

  • Figure 1 est une vue de profil d'un ski alpin.
  • Figure 2 est une vue représentant la variation de raideur d'un ski traditionnel, sur la longueur de celui-ci.
  • Figure 3 est une vue représentant la variation de raideur d'un ski selon l'invention, sur la longueur de celui-ci.
  • Figure 4 est une vue en perspective d'un premier ski.
  • Figure 5 en est une vue schématique en coupe transversale et à échelle agrandie suivant la ligne V-V de figure 4.
  • Figure 6 est une vue en perspective d'un second ski.
  • Figure 7 est une vue schématique en coupe transversale et à échelle agrandie de ce ski suivant la ligne VII-VII de figure 6.
  • Figure 8 est une vue en perspective d'un troisième ski.
  • Figure 9 est une vue de côté et à échelle agrandie de la partie centrale de la zone patin du ski de figure 8.
  • Figures 10 et 11 sont deux vues en coupe transversale et à échelle agrandie de ce ski respectivement suivant les lignes X-X et XI-XI de figure 8.
  • Figure 12 est une vue de côté et éclatée d'un noyau composant un quatrième ski.
  • Figure 13 est une vue de côté de ce ski en position montée.
  • Figures 14 et 15 en sont deux vues en coupe transversale suivant les lignes XIV-XIV et XV-XV de figure 13, respectivement.
    • In any case, the invention will be clearly understood, with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting examples, several embodiments of this ski.
  • Figure 1 is a side view of an alpine ski.
  • Figure 2 is a view showing the variation in stiffness of a traditional ski, over the length thereof.
  • Figure 3 is a view showing the variation in stiffness of a ski according to the invention, over the length thereof.
  • Figure 4 is a perspective view of a first ski.
  • Figure 5 is a schematic view in cross section and on an enlarged scale along the line VV of Figure 4.
  • Figure 6 is a perspective view of a second ski.
  • FIG. 7 is a schematic view in cross section and on an enlarged scale of this ski along the line VII-VII of FIG. 6.
  • Figure 8 is a perspective view of a third ski.
  • Figure 9 is a side view and on an enlarged scale of the central part of the skate area of the ski of Figure 8.
  • FIGS. 10 and 11 are two views in cross section and on an enlarged scale of this ski respectively along lines XX and XI-XI of FIG. 8.
  • Figure 12 is a side and exploded view of a core making up a fourth ski.
  • Figure 13 is a side view of this ski in the mounted position.
  • Figures 14 and 15 are two cross-sectional views along the lines XIV-XIV and XV-XV of Figure 13, respectively.

    • La figure 3 représente la courbe de raideur d'un ski selon l'invention, dans laquelle la longueur du ski L a été portée en abscisse et dans laquelle la raideur a été portée suivant l'axe des ordonnées. Comme montré sur cette courbe, la raideur dans la partie centrale C de la zone de patin P est inférieure à la raideur dans les parties d'extrémité E et F de la zone patin, c'est-à-dire les parties de raccordement avec les zones spatule S et talon T respectivement. FIG. 3 represents the stiffness curve of a ski according to the invention, in which the length of the ski L has been plotted on the abscissa and in which the stiffness has been carried along the ordinate axis. As shown on this curve, the stiffness in the central part C of the pad P is less than the stiffness in the end parts E and F of the skid zone, i.e. the connecting parts with the spatula zones S and heel T respectively.

    Pour obtenir ce résultat, plusieurs formes d'exécution sont présentées ci-après à titre d'exemples.To achieve this result, several forms of execution are presented below as examples.

    Les figures 4 et 5 représentent un ski comportant une structure coque, c'est-à-dire comportant une coque 5 en matière synthétique, renforcée du côté de l'intérieur du ski par au moins une couche de tissu stratifié, non représentée au dessin, formant la paroi supérieure 6 et les parois latérales 7, 8 du ski et dont les bords reposent sur les carres 11. Ce ski comporte un ensemble inférieur intégrant une semelle de glissement 9 disposée entre les carres, ainsi qu'un noyau central 10 reposant sur l'ensemble inférieur et formant l'intérieur du ski. Des éléments de renfort sont prévus, qui n'ont pas été représentés au dessin dans la mesure où ils ne concernent pas l'invention. Comme montré à la figure 4, la partie centrale de la zone patin sert au montage, sur la face supérieure du ski, d'une butée 12 et d'une talonnière 13 constituant la fixation d'une chaussure du skieur.Figures 4 and 5 show a ski having a structure shell, that is to say comprising a shell 5 of synthetic material, reinforced on the inside of the ski by at least one layer of fabric laminate, not shown in the drawing, forming the upper wall 6 and the side walls 7, 8 of the ski and the edges of which rest on the edges 11. This ski has a lower assembly incorporating a sliding sole 9 disposed between the edges, as well as a central core 10 resting on the lower assembly and forming the interior of the ski. Reinforcement elements are provided, which have not been shown in the drawing insofar as they do not relate to the invention. As shown in Figure 4, the part center of the skate area is used for mounting, on the upper face of the ski, a stop 12 and a heel piece 13 constituting the attachment of a skier's shoe.

    Dans la forme d'exécution du ski représenté aux figures 4 et 5, la diminution de raideur dans la partie centrale de la zone patin est obtenue par une réduction localisée de la largeur de la coque réalisée de part et d'autre de l'axe longitudinal médian du ski. Cela se traduit, comme montré sur le dessin, par des zones 14 en creux obtenues par une augmentation de l'inclinaison des parois latérales 8 dans cette zone par rapport aux parois latérales 7 du ski sur le reste de la longueur de celui-ci. Il ressort des figures 4 et 5 que dans la partie centrale de la zone patin la largeur de la zone supérieure 6 est réduite.In the embodiment of the ski represented in FIGS. 4 and 5, the reduction in stiffness in the central part of the skate area is obtained by a localized reduction in the width of the hull made on both sides and other side of the median longitudinal axis of the ski. This translates, as shown in the drawing, by recessed zones 14 obtained by an increase of the inclination of the side walls 8 in this zone relative to the walls side 7 of the ski over the rest of the length thereof. It emerges from Figures 4 and 5 that in the central part of the skate area the width of the upper zone 6 is reduced.

    Les figures 6 et 7 représentent un second ski, qui est également un ski à structure à coque, possédant les mêmes caractéristiques générales que le premier ski. Les mêmes éléments sont donc désignés par les mêmes références que précédemment.Figures 6 and 7 show a second ski, which is also a ski with shell structure, having the same general characteristics than the first ski. The same elements are therefore designated by the same references than before.

    Dans ce second ski, la diminution de la raideur dans la partie centrale de la zone patin est obtenue par une diminution localisée de l'épaisseur du ski, dans une zone 15 située entre la butée 12 et la talonnière 13.In this second ski, the decrease in the stiffness in the part center of the skate area is obtained by a localized decrease in the thickness of the ski, in a zone 15 located between the stop 12 and the heel piece 13.

    Les figures 8 à 11 représentent une troisième forme d'exécution d'un ski selon l'invention. Dans ce ski, les mêmes éléments sont désignés par les mêmes références que précédemment. Ce ski comporte une coque en matière synthétique 16, renforcée du côté de l'intérieur du ski, c'est-à-dire du côté du noyau 10 par au moins une couche de tissu stratifié, non représentée au dessin. La coque 16 forme la paroi supérieure 17 et une partie des parois latérales 18, et ses bords reposent sur des éléments longitudinaux de renforcement 19, apparents sur les parois latérales du ski, et qui prennent appui sur les carres 11. Cette structure ressort clairement des figures 8 et 11. La diminution de raideur dans la partie centrale de la zone patin du ski est obtenue par une suppression localisée des éléments longitudinaux de renforcement 19 au profit d'une augmentation des parois latérales 18 de la coque, comme cela est visible aux figures 8, 9 et 10. Dans la partie centrale de la zone patin, les bords inférieurs de la coque 16 reposent directement sur les carres. Une variante de ce ski consisterait à diminuer la hauteur des éléments de renforcement dans la partie centrale de la zone patin, sans supprimer totalement ceux-ci.Figures 8 to 11 show a third embodiment of a ski according to the invention. In this ski, the same elements are designated by the same references as above. This ski has a hull in synthetic material 16, reinforced on the inside of the ski, that is to say on the side of the core 10 by at least one layer of laminated fabric, not shown in the drawing. The shell 16 forms the upper wall 17 and a part of the side walls 18, and its edges rest on elements longitudinal reinforcement 19, visible on the side walls of the ski, and which rest on the edges 11. This structure is clearly visible Figures 8 and 11. The decrease in stiffness in the central part of the ski skate area is obtained by localized removal of elements longitudinal reinforcement 19 in favor of an increase in the walls side 18 of the shell, as can be seen in FIGS. 8, 9 and 10. In the central part of the skate area, the lower edges of the shell 16 rest directly on the edges. A variant of this ski would consist of decrease the height of the reinforcing elements in the central part of the skate area, without completely removing them.

    Les figures 12 à 15 représentent un autre ski dans lequel les mêmes éléments sont désignés par les mêmes références que précédemment. Dans ce ski, le noyau 10 présente, dans la partie centrale de la zone patin, une cavité 20. Comme montré à la figure 12, une cale 24 est prévue pour épouser la forme de la cavité 20.Figures 12 to 15 show another ski in which the same elements are designated by the same references as previously. In this ski, the core 10 has, in the central part of the skate area, a cavity 20. As shown in FIG. 12, a shim 24 is designed to match the shape of the cavity 20.

    Les figures 13 à 15 représentent schématiquement un ski conforme à ce mode de réalisation constitué de la façon suivante : après mise en place dans un moule, de la semelle 9, des carres 11 et du noyau 10, on dispose un tissu de renfort 22, de telle sorte qu'il épouse la forme du noyau 10 donc de la cavité 20, puis on dispose la cale 24 pour combler la cavité 20, et enfin on coiffe cet ensemble par la coque 23. Cette structure permet de diminuer la raideur du ski dans la partie centrale de la zone patin de celui-ci. Cette diminution de la raideur pourrait être obtenue dans des variantes ne mettant pas en oeuvre une cale, mais dans lesquelles le renfort supérieur 22 ou le renfort inférieur, non représenté, se rapproche de la fibre neutre du ski, dans la zone dans laquelle la raideur doit être diminuée.Figures 13 to 15 schematically represent a ski in accordance with this embodiment constituted as follows: after placing in a mold, the sole 9, the edges 11 and the core 10, there is a reinforcing fabric 22, so that it matches the shape of the core 10 so of the cavity 20, then we have the wedge 24 to fill the cavity 20, and finally this cap is capped by the shell 23. This structure reduces the stiffness of the ski in the central part of the skate area of it. This reduction in stiffness could be obtained in variants not using a shim, but in which the upper reinforcement 22 or the lower reinforcement, not shown, approaches neutral fiber of the ski, in the area where the stiffness must be decreased.

    Comme il ressort de ce qui précède, l'invention apporte une grande amélioration à la technique existante en fournissant un ski dont la structure, le terme structure étant pris au sens large et pouvant désigner aussi bien un agencement de matériaux que des dimensions, permet d'homogénéiser la raideur dans la partie centrale de la zone patin, sans nécessiter la mise en oeuvre de moyens complexes, et au contraire, dans certaines formes d'exécution, en diminuant la quantité de matière et par suite le poids et le prix de revient du ski.As is apparent from the above, the invention provides a great improvement to the existing technique by providing a ski whose structure, the term structure being taken in the broad sense and being able to designate both an arrangement of materials and dimensions, allows to homogenize the stiffness in the central part of the skate area, without require the implementation of complex means, and on the contrary, in certain forms of execution, by reducing the quantity of material and by then the weight and the cost price of the ski.

    Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de ce ski décrites à titre d'exemples, elle en embrasse au contraire toutes les variantes. C'est ainsi notamment que certaines caractéristiques du ski qui ont été décrites isolément pourraient être combinées, par exemple, une réduction de largeur combinée à une réduction d'épaisseur, sans que l'on sorte pour autant du cadre de l'invention.It goes without saying that the invention is not limited only to embodiments of this ski described as examples, it embraces on the contrary all the variants. It is in particular that some ski features that have been described in isolation could be combined, for example, a reduction in width combined with a thickness reduction, without leaving the framework of the invention.

    Claims (9)

    1. Alpine ski comprising a front zone known as a tip zone (2), a rear zone known as a tail zone (4) and an intermediate zone known as a runner zone (3) intended to receive a toe-piece (12) and a heel-piece (13) constituting the binding of the boot of a skier, characterized in that the rigidity, that is to say the bending strength in the longitudinal direction of the ski, of the central part of the runner zone (3) is lower than the rigidity in the two end parts of the runner zone (3), that is to say the parts connected to the front (2) and rear (4) zones respectively.
    2. Alpine ski according to Claim 1, characterized in that the rigidity in the central part of the runner zone (3) is lower by at least 5% than the lowest rigidity of the end parts of the runner zone.
    3. Alpine ski according to one of Claims 1 and 2, characterized in that the reduction in rigidity in the central part of the runner zone (3) is obtained by localized moving of the upper and/or lower reinforcements (22) closer to the neutral axis of the ski.
    4. Alpine ski according to one of Claims 1 and 2, characterized in that, in cases where the ski has longitudinal reinforcement elements (19) visible on the lateral walls of the ski and called sidewalls, the reduction in rigidity in the runner zone of the ski is obtained by a localized reduction in the height or in the thickness of the sidewalls.
    5. Alpine ski according to Claim 4, characterized in that the reduction in rigidity in the central part of the runner zone is obtained by a localized discontinuity of the sidewalls (19) in this part.
    6. Alpine ski according to one of Claims 1 and 2, characterized in that, in cases where it has a structure comprising a shell (16) made of synthetic material which is reinforced on the inside of the ski by at least one layer of laminated fabric, which forms the upper wall and part of the lateral walls of the ski and the margins of which rest on longitudinal reinforcement elements (19) which are visible on the lateral walls of the ski and are supported directly or indirectly on the edges (8), the reduction in the rigidity in the runner zone of the ski is obtained by a reduction in the height or by localized omission of the longitudinal reinforcement elements (19) in favour of an increase in height of the lateral walls (18) of the shell (16) in this zone.
    7. Alpine ski according to one of Claims 1 and 2, characterized in that the reduction in rigidity in the central part of the runner zone (3) is obtained by a localized reduction (15) in the thickness of the ski.
    8. Alpine ski according to one of Claims 1 and 2, characterized in that the reduction in rigidity in the central part of the runner zone (3) is obtained by a localized reduction (14) in the width of the upper part of the ski, the lower part comprising the base and the edges remaining of conventional width.
    9. Alpine ski according to one of Claims 1 to 8, characterized in that the length of the zone of reduction in rigidity is of the order of 200 mm to 600 mm, and preferably lies between 400 and 500 mm.
    EP01420085A 2000-04-14 2001-04-09 Alpine ski Expired - Lifetime EP1145742B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0004877 2000-04-14
    FR0004877A FR2807670B1 (en) 2000-04-14 2000-04-14 ALPINE SKIING

    Publications (2)

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    EP1145742A1 EP1145742A1 (en) 2001-10-17
    EP1145742B1 true EP1145742B1 (en) 2004-12-22

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    Application Number Title Priority Date Filing Date
    EP01420085A Expired - Lifetime EP1145742B1 (en) 2000-04-14 2001-04-09 Alpine ski

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    US (1) US6637766B2 (en)
    EP (1) EP1145742B1 (en)
    AT (1) ATE285277T1 (en)
    DE (1) DE60107893T2 (en)
    FR (1) FR2807670B1 (en)

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    FR2820982B1 (en) * 2001-02-20 2003-03-28 Rossignol Sa SLIDING BOARD
    FR2820983B1 (en) 2001-02-20 2004-04-16 Rossignol Sa SLIDING BOARD
    FR2838063B1 (en) * 2002-04-09 2004-11-12 Rossignol Sa ALPINE SKIING
    US7150464B2 (en) * 2002-08-02 2006-12-19 Lane Ekberg Configurable snowshoe and ski device
    US7681904B2 (en) 2002-08-02 2010-03-23 Lane Ekberg Configurable snowshoe and ski device
    FR2864451B1 (en) * 2003-12-24 2006-01-27 Skis Dynastar SKI
    US8348299B2 (en) * 2005-10-07 2013-01-08 Lane Ekberg Multiple direct lock positions for touring ski mounting plate
    US9079094B2 (en) 2005-10-07 2015-07-14 Lane A. Ekberg Multiple direct touring positions for snowboard boot binding mounting base
    FR2891751B1 (en) * 2005-10-11 2008-06-06 Salomon Sa SLIDING OR ROLLING BOARD
    US20080174089A1 (en) * 2007-01-21 2008-07-24 Lane Ekberg Apparatus, system, and method for a collapsing approach ski
    US20090256332A1 (en) * 2007-02-07 2009-10-15 Lane Ekberg Apparatus, System, and Method for Folding, Stowing, and Deploying Skis
    US20090045605A1 (en) * 2007-08-17 2009-02-19 Pat Keane Snow ski
    WO2014082058A1 (en) * 2012-11-26 2014-05-30 Renoun Ski Company, Llc Snowsport apparatus with non-newtonian materials
    AT13391U1 (en) * 2012-12-20 2013-12-15 Fischer Sports Gmbh Ski, especially touring skis
    JP2017148502A (en) * 2017-01-23 2017-08-31 公裕 土江 Ski board
    US11478691B2 (en) * 2018-07-10 2022-10-25 Renoun, Llc Snow sliding device incorporating material having shear-rate dependent shear resistance, and methods for its manufacture

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    US5096217A (en) * 1988-12-01 1992-03-17 Kent Hunter Monoski with deep side cuts and cambered segment in the binding portion
    FR2666021B1 (en) * 1990-08-24 1992-11-13 Salomon Sa CROSS-COUNTRY SKIING, PARTICULARLY FOR THE PRACTICE OF THE ALTERNATIVE PIT.
    US5232241A (en) * 1992-02-24 1993-08-03 K-2 Corporation Snow ski with integral binding isolation mounting plate
    FR2689411B1 (en) * 1992-04-01 1994-06-03 Salomon Sa SKI COMPRISING A BASE AND A TWO-PART STIFFENER CONNECTED TO THE BASE.
    FR2698013B1 (en) * 1992-11-19 1994-12-16 Rossignol Sa Device for mounting a boot on an alpine ski.
    FR2734490B1 (en) * 1995-05-22 1997-07-04 Rossignol Sa SNOW SLIDING BOARD COMPRISING A PLATFORM FOR RECEIVING AND RAISING SHOE MOUNTS
    US5803478A (en) * 1995-06-07 1998-09-08 Gavalis; Richard Clifford Ski
    FR2763861B1 (en) 1997-05-30 1999-07-23 Rossignol Sa ONE-PIECE PLATFORM FOR MOUNTING ON AN ALPINE SKI, A FIXATION FOR A SHOE
    FR2787723B1 (en) * 1998-12-23 2001-01-26 Skis Dynastar SLIDING BOARD

    Also Published As

    Publication number Publication date
    ATE285277T1 (en) 2005-01-15
    FR2807670A1 (en) 2001-10-19
    DE60107893T2 (en) 2005-05-19
    DE60107893D1 (en) 2005-01-27
    US20010035630A1 (en) 2001-11-01
    US6637766B2 (en) 2003-10-28
    EP1145742A1 (en) 2001-10-17
    FR2807670B1 (en) 2002-06-07

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