EP1166832B1 - Snowboard with an upper reinforcing element - Google Patents

Snowboard with an upper reinforcing element Download PDF

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Publication number
EP1166832B1
EP1166832B1 EP01420140A EP01420140A EP1166832B1 EP 1166832 B1 EP1166832 B1 EP 1166832B1 EP 01420140 A EP01420140 A EP 01420140A EP 01420140 A EP01420140 A EP 01420140A EP 1166832 B1 EP1166832 B1 EP 1166832B1
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EP
European Patent Office
Prior art keywords
board
width
metal blade
zone
ski
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EP01420140A
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German (de)
French (fr)
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EP1166832A1 (en
Inventor
M. Henri Charles Deborde
M. Daniel Cuzzit
M. Max Mermet
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Skis Rossignol SA
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Skis Rossignol SA
Rossignol SA
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Publication of EP1166832A1 publication Critical patent/EP1166832A1/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
    • A63C5/04—Structure of the surface thereof

Definitions

  • the present invention relates to a gliding board on snow having an upper reinforcement.
  • a board for gliding on snow comprises a lower assembly consisting of a sliding sole bordered by two longitudinal metal edges called edges. On the edges rest the side walls of the ski, which are arranged on either side of a central core.
  • the lower assembly may comprise above the sole one or more reinforcing elements in the form of a metal blade or in the form of a layer of resin-impregnated fibers.
  • a gliding board comprises an upper assembly comprising an upper wall below which, depending on the characteristics of the ski, may be an upper reinforcement constituted by a metal blade and / or a layer of fibers impregnated with resin.
  • Such a structure is general and applies to different types of gliding board, including gliding boards of rectangular section with side walls constituted by independent elements called edges, or gliding boards, the upper wall and the side walls. are formed at least in part by the same element called shell.
  • Document DE 20 25 622 relates to a ski comprising, in a localized manner, reinforcing elements in the form of metal plates.
  • Document DE 23 46 417 relates to a ski comprising reinforcement elements in the form of sheets, either of metal, or of fiber-reinforced synthetic material. In this case again, these reinforcing elements are only found on a part of the surface of the ski.
  • skis comprising an upper reinforcement, that is to say located on the side of the upper wall of the ski, above the core, comprising a metal blade and a resin impregnated fiber layer.
  • the layer of resin-impregnated fibers extends over the entire width of the ski, while the metal blade has longitudinal edges which are located slightly recessed from the longitudinal edges of the ski, but extend parallel thereto.
  • Such a metal blade may be constituted, for example, based on an aluminum alloy, such as that known under the trade name from Zycral.
  • the resin-impregnated fiber layer may be obtained from fibers of the same kind, or of different natures, such as glass, carbon, or aramid fibers.
  • a metal blade constituting an upper reinforcement has an anisotropic character, that is to say that its mechanical properties are constant in all directions.
  • the fibrous layer it has an isotropic character, insofar as it is possible to achieve a different dosage of fibers in the longitudinal direction and in the transverse direction.
  • the metal blade and the resin impregnated fiber layer do not have the same properties.
  • the metal blade has good torsional stiffness, while the resin impregnated fiber layer has lower torsional stiffness characteristics but good flexural strength characteristics.
  • the flexural modulus E 1 of the metal blade is substantially twice as high as the flexural modulus E 2 of the fibers, while the torsion modulus G 1 of the metal blade is substantially five times greater than the torsional modulus G 2 of the resin-impregnated fiber layer.
  • US-A-5-690-349 relates to a hull ski having a reinforcement of resin-impregnated fibers extending from one lower metal edge to the other. Under the fiber reinforcement is disposed at the upper face of the ski, a reinforcement consisting of a metal blade, whose width corresponds to that of the upper face of the ski, or decreases the central area of the ski forward .
  • the object of the invention is to provide a superior reinforcement for snowboard gliding, to optimize the performance thereof, depending on the desired behavior, taking into account the specific characteristics of materials: metal blade and layer of resin-impregnated fibers constituting the upper reinforcement of the board comprising a metal blade and a resin impregnated fiber layer superimposed, this reinforcement extending continuously over substantially the entire useful length of the board and the respective amounts and / or respective shapes and / or positions relative to the fiber neutral of the metal blade and the layer of fibers varying differently over the length of the board, the resin-impregnated fiber layer extending over substantially the entire width of the upper face of the board and over substantially the entire length of the board , while the width of the metal blade varies over the length of the board, characterized in that the width of the metal blade is maximum in a front area of the board and corresponds substantially to the width of the upper face thereof , and decreases towards the central zone or pad zone of the board, where its width is less than the width of the upper face of the board.
  • this central zone which receives the front stop and the rear heel for the attachment of a shoe, or which receives a platform for mounting the attachment of a shoe, on the one hand, is stiffened by this fixation assembly -Shoe and, on the other hand, is subject to very significant constraints, especially at its connecting end respectively with the front and rear ski areas. It can result, if the metal blade plays a preponderant role in the upper reinforcement, definitive deformations of this metal blade, corresponding to a destruction of the ski.
  • the width of the metal blade is maximum in the front zone of the board, that is to say substantially of the width thereof, is minimal in the central zone or skate zone, c ' that is, less than the width of the board, and increases in the rear area of the board.
  • a ski made according to this possibility has a good torsion stiffness in its front zone as well as in its rear zone, which gives it a ski behavior more specifically adapted to the giant slalom where it s is to have a good guide accuracy using a good torsional stiffness of the front zone of the ski and to avoid skidding at corner exit thanks to good torsional stiffness of the rear of the ski ski.
  • the width of the metal blade is maximum in the front area of the board and decreases into the rear area of the board.
  • this ski is more comfortable to ski than the ski defined above, insofar as the torsional stiffness of the rear area is less, this ski tends to skid out of the bend .
  • the resin impregnated fiber layer may be located above or below the metal blade. However, it is advantageously located above, in order to perfectly follow the profile of the upper face of the ski.
  • the resin impregnated fiber layer and the metal blade are in contact with each other.
  • the fiber layer comprises at least one of sides of the metal blade, a return extending substantially in the plane of the metal blade.
  • the board according to the invention may be a board having a substantially rectangular section over its entire length, whether it is a board having two separate side walls of the upper wall, or a board type shell, wherein the side walls are constituted by the extensions of the upper wall, or a board in which the upper wall has extensions forming part of the side walls, to the extent that these extensions are supported on at least a part the length of the board on reinforcing elements resting on the lower assembly, and in particular on the edges.
  • this board comprises in its front and rear areas a rectangular general section, while its upper face has, in its central zone or shoe area, two longitudinal ribs arranged on the side of the two edges. of the board, connected by a lower central portion, the layer of resin-impregnated fibers substantially following, from one edge to the other of the board, the profile of the upper face, and the metal blade having a width corresponding to that of the central portion of the upper face and being disposed below this central portion.
  • the developed width of the outer wall of the upper part of the board is increased. due to the presence of the two longitudinal ribs. This results in an increase in the amount of fiber in the fibrous reinforcement layer, compared to the case where the top of the board would be flat.
  • the fiber layer substantially following the upper face of the board moves away from the neutral fiber of the board in the area of the ribs, which ensures an increase in resistance to bending and torsion.
  • the tile shape of the fiber layer in the area of each rib improves its rigidity in this area.
  • this board has a central rib extending over a large part of its length, and of decreasing width from the spatula to the heel, the layer of resin-impregnated fibers substantially following from one edge to the other. the other of the board, the profile of the upper face and the metal blade having a width equal to that of the bottom of the rib and being disposed opposite this bottom.
  • the ski shown in Figures 1 to 5 comprises a lower assembly constituted by a sliding sole 2 bordered longitudinally by two metal edges called edges 3. On the lower assembly which may optionally be equipped with a reinforcement, not shown in the drawing, rests a core 4. On either side of this core 4, are arranged longitudinal walls 5 which, in this embodiment, do not extend over the entire height of the ski.
  • the upper assembly of the ski comprises an upper wall 6 forming the upper face and having two longitudinal returns 7 forming part of the longitudinal walls and resting on the elements 5.
  • This ski comprises, over its entire length or length active, it is between its forward contact line and its rear contact line with the snow, a continuous upper reinforcement constituted by a metal blade 8, for example based on an aluminum alloy known under the trade name Zycral, and a layer 9 of fibers, such as glass, carbon or aramid fibers or a mixture of such resin-impregnated fibers.
  • the fibrous layer 9 extends over the entire width of the ski, a longitudinal member 5 located from one side to the other longitudinal member located on the other side.
  • This ski has, in its rear zones 10 and before 12, a substantially rectangular section, with a substantially flat upper surface, while it has, in its central zone 13, two longitudinal ribs 14 arranged on the side of the two edges of the ski, and connected by a lower flat central portion 15.
  • FIG. 4 is a cross-sectional view in the central zone 13, that the fibrous layer 9 follows the profile of the upper face, and in particular the profile of the ribs 14, which increases the expanded width of the fibrous layer 9 relative to the case where the ski would be rectangular.
  • this blade has, in the rear zone 10 and in the front zone 12, substantially the width of the upper wall 6, while in the central zone 13 ski has a width corresponding substantially to that of the central portion 15 disposed between the two ribs 14.
  • the ski concerned Given the relatively large width of the blade 8 in the rear zones 10 and 12 before, the ski concerned has a good torsional stiffness in these two areas, which makes a ski with good guiding accuracy at the beginning of turn, as well as a good grip at the end of the turn, which corresponds to the characteristics of a giant slalom ski.
  • the central part comprises a metal blade of reduced width, with increasing the amount of fibrous layer and removal of the fibrous layer relative to the neutral fiber. It is therefore the fibrous layer which is preferred as a reinforcement in the central zone of the ski, which is advantageous, insofar as this central zone responds to important stresses, especially in front and behind the binding, the fixing area being stiffened by the shoe and possibly a mounting platform of the attachment of the shoe.
  • FIGS 6 to 10 show another ski, wherein the same elements are designated by the same references as before.
  • This ski has, over a large part of its length, a central rib 16 of decreasing width from front to rear, the upper surface of the rib having at the front 12 a width L 1 greater than the width L 2 at the level of the shoe 13, itself greater than the width L 3 at the rear 10 of the ski, as shown in FIGS. 8 to 10.
  • the fibrous layer 9 matches the shape of the central rib, as shown in FIGS. 8 and 9 while the metal blade 8 has a width substantially corresponding to that of the bottom of the groove.
  • the width of the blade 8 is decreasing from the front of the ski to the heel thereof.
  • the shape of the fibrous layer, its width and its positioning in relation to the neutral fiber affect the behavior of the ski.
  • the width of the metal blade being lower in the rear zone 10
  • this ski is a ski much more comfortable than the ski described with reference to Figures 1 to 5, since, if it enjoys with a good torsional rigidity at its front end, ensuring good guidance at the beginning of the turn, its torsional stiffness is lower in its rear area, making it easier to skid.
  • FIGS. 11 to 13 are three sectional views respectively in the front zone, in the central zone and in the rear zone of a ski of rectangular section.
  • the ski comprises longitudinal elements 17, on which rests a separate upper wall 18.
  • FIGS. 11 to 13 show an embodiment of this ski, in which the fibrous layer 9 extends over the entire width of the ski core, while the metal blade 8 has a width which decreases from the front of the ski to the rear thereof as shown in Figures 11 to 13.
  • the invention brings a great improvement to the existing technique by providing a snow sliding board, the behavior characteristics of which can be modified by varying the relative parameters of the two components, respectively a metal blade. and a fibrous layer constituting the upper reinforcement of the ski.

Abstract

The snowboard upper reinforcement comprises a metal strip (8) and a layer of superposed resin impregnated fibers (9). The reinforcement extends over the useful length of the snowboard. The layer of fibers extend over the width and length of the board whilst the width of the metal strip varies over the length of the board.

Description

La présente invention a pour objet une planche de glisse sur neige comportant un renfort supérieur.The present invention relates to a gliding board on snow having an upper reinforcement.

Une planche de glisse sur neige comprend un ensemble inférieur constitué par une semelle de glissement bordée par deux arêtes métalliques longitudinales appelées carres. Sur les carres reposent les parois latérales du ski, qui sont disposées de part et d'autre d'un noyau central. L'ensemble inférieur peut comprendre au-dessus de la semelle un ou plusieurs éléments de renforcement se présentant sous forme d'une lame métallique ou sous forme d'une couche de fibres imprégnées de résine. Une planche de glisse comprend enfin un ensemble supérieur comprenant une paroi supérieure en dessous de laquelle peut se trouver, en fonction des caractéristiques du ski, un renfort supérieur constitué par une lame métallique et/ou une couche de fibres imprégnées de résine.A board for gliding on snow comprises a lower assembly consisting of a sliding sole bordered by two longitudinal metal edges called edges. On the edges rest the side walls of the ski, which are arranged on either side of a central core. The lower assembly may comprise above the sole one or more reinforcing elements in the form of a metal blade or in the form of a layer of resin-impregnated fibers. Finally, a gliding board comprises an upper assembly comprising an upper wall below which, depending on the characteristics of the ski, may be an upper reinforcement constituted by a metal blade and / or a layer of fibers impregnated with resin.

Une telle structure est générale et s'applique à différents types de planche de glisse, notamment des planches de glisse de section rectangulaire comportant des parois latérales constituées par des éléments indépendants appelés chants, ou des planches de glisse dont la paroi supérieure et les parois latérales sont constituées au moins en partie par un même élément appelé coque.Such a structure is general and applies to different types of gliding board, including gliding boards of rectangular section with side walls constituted by independent elements called edges, or gliding boards, the upper wall and the side walls. are formed at least in part by the same element called shell.

Le document DE 20 25 622 concerne un ski comportant, de façon localisée, des éléments de renforcement sous forme de plaques métalliques.Document DE 20 25 622 relates to a ski comprising, in a localized manner, reinforcing elements in the form of metal plates.

Le document DE 23 46 417 concerne un ski comportant des éléments de renforcement se présentant sous forme de feuilles, soit métalliques, soit de matière synthétique renforcée de fibres. Dans ce cas encore, ces éléments de renforcement ne se trouvent que sur une partie de la surface du ski.Document DE 23 46 417 relates to a ski comprising reinforcement elements in the form of sheets, either of metal, or of fiber-reinforced synthetic material. In this case again, these reinforcing elements are only found on a part of the surface of the ski.

Il est également connu de réaliser des skis comprenant un renfort supérieur, c'est-à-dire situé du côté de la paroi supérieure du ski, au-dessus du noyau, comprenant une lame métallique et une couche de fibres imprégnées de résine. La couche de fibres imprégnées de résine s'étend sur toute la largeur du ski, tandis que la lame métallique comporte des bords longitudinaux qui sont situés légèrement en retrait des bords longitudinaux du ski, mais s'étendent parallèlement à ceux-ci.It is also known to make skis comprising an upper reinforcement, that is to say located on the side of the upper wall of the ski, above the core, comprising a metal blade and a resin impregnated fiber layer. The layer of resin-impregnated fibers extends over the entire width of the ski, while the metal blade has longitudinal edges which are located slightly recessed from the longitudinal edges of the ski, but extend parallel thereto.

Une telle lame métallique peut être constituée, par exemple, à base d'un alliage d'aluminium, tel que celui connu sous le nom commercial de Zycral. La couche de fibres imprégnées de résine peut être obtenue à partir de fibres de même nature, ou de natures différentes, telles que des fibres de verre, de carbone, ou d'aramide.Such a metal blade may be constituted, for example, based on an aluminum alloy, such as that known under the trade name from Zycral. The resin-impregnated fiber layer may be obtained from fibers of the same kind, or of different natures, such as glass, carbon, or aramid fibers.

Une lame métallique constitutive d'un renfort supérieur possède un caractère anisotrope, c'est-à-dire que ses propriétés mécaniques sont constantes dans tous les sens. En ce qui concerne la couche fibreuse, elle possède un caractère isotrope, dans la mesure où il est possible de réaliser un dosage différent des fibres dans le sens longitudinal et dans le sens transversal.A metal blade constituting an upper reinforcement has an anisotropic character, that is to say that its mechanical properties are constant in all directions. As regards the fibrous layer, it has an isotropic character, insofar as it is possible to achieve a different dosage of fibers in the longitudinal direction and in the transverse direction.

Il faut également noter que la lame métallique et la couche de fibres imprégnées de résine ne possèdent pas les mêmes propriétés. C'est ainsi que la lame métallique possède une bonne raideur en torsion, tandis que la couche de fibres imprégnées de résine possède de moins bonnes caractéristiques de raideurs en torsion, mais de bonnes caractéristiques de résistance en flexion.It should also be noted that the metal blade and the resin impregnated fiber layer do not have the same properties. Thus, the metal blade has good torsional stiffness, while the resin impregnated fiber layer has lower torsional stiffness characteristics but good flexural strength characteristics.

C'est ainsi que, pour les lames métalliques et couches de fibres imprégnées de résine déjà utilisées dans la constitution de skis, le module de flexion E1 de la lame métallique est sensiblement deux fois supérieur au module de flexion E2 de la couche de fibres, tandis que le module de torsion G1 de la lame métallique est sensiblement cinq fois supérieur au module de torsion G2 de la couche de fibres imprégnées de résine.Thus, for the metal strips and layers of resin-impregnated fibers already used in the constitution of skis, the flexural modulus E 1 of the metal blade is substantially twice as high as the flexural modulus E 2 of the fibers, while the torsion modulus G 1 of the metal blade is substantially five times greater than the torsional modulus G 2 of the resin-impregnated fiber layer.

Le document US-A-5-690-349 concerne un ski à coque comportant un renfort de fibres imprégnées de résine s'étendant d'une arête métallique inférieure à l'autre. Sous le renfort de fibres est disposé, au niveau de la face supérieure du ski, un renfort constitué par une lame métallique, dont la largeur correspond à celle de la face supérieure du ski, ou diminue de la zone centrale du ski vers l'avant.US-A-5-690-349 relates to a hull ski having a reinforcement of resin-impregnated fibers extending from one lower metal edge to the other. Under the fiber reinforcement is disposed at the upper face of the ski, a reinforcement consisting of a metal blade, whose width corresponds to that of the upper face of the ski, or decreases the central area of the ski forward .

Le but de l'invention est de fournir un renfort supérieur pour planche de glisse sur neige, permettant d'optimiser les performances de celle-ci, en fonction du comportement recherché, en tenant compte des caractéristiques spécifiques des matériaux : lame métallique et couche de fibres imprégnées de résine, constitutifs du renfort supérieur de la planche comprenant une lame métallique et une couche de fibres imprégnées de résine, superposées, ce renfort s'étendant de façon continue sur sensiblement toute la longueur utile de la planche et les quantités respectives et/ou les formes respectives et/ou les positionnements respectifs par rapport à la fibre neutre de la lame métallique et de la couche de fibres variant différemment sur la longueur de la planche, la couche de fibres imprégnées de résine s'étendant sur sensiblement toute la largeur de face supérieure de la planche et sur sensiblement toute la longueur de la planche, tandis que la largeur de la lame métallique varie sur la longueur de la planche, caractérisé en ce que la largeur de la lame métallique est maximale dans une zone avant de la planche et correspond sensiblement à la largeur de la face supérieure de celle-ci, et diminue en direction de la zone centrale ou zone de patin de la planche, où sa largeur est inférieure à la largeur de la face supérieure de la planche.The object of the invention is to provide a superior reinforcement for snowboard gliding, to optimize the performance thereof, depending on the desired behavior, taking into account the specific characteristics of materials: metal blade and layer of resin-impregnated fibers constituting the upper reinforcement of the board comprising a metal blade and a resin impregnated fiber layer superimposed, this reinforcement extending continuously over substantially the entire useful length of the board and the respective amounts and / or respective shapes and / or positions relative to the fiber neutral of the metal blade and the layer of fibers varying differently over the length of the board, the resin-impregnated fiber layer extending over substantially the entire width of the upper face of the board and over substantially the entire length of the board , while the width of the metal blade varies over the length of the board, characterized in that the width of the metal blade is maximum in a front area of the board and corresponds substantially to the width of the upper face thereof , and decreases towards the central zone or pad zone of the board, where its width is less than the width of the upper face of the board.

II est ainsi possible de faire varier le comportement d'une planche en adaptant les largeurs respectives de la lame métallique et de la couche de fibres imprégnées de résine sur la longueur de la planche.It is thus possible to vary the behavior of a board by adapting the respective widths of the metal blade and the resin impregnated fiber layer along the length of the board.

Il est en effet intéressant de réduire la largeur de la lame métallique dans la zone centrale du ski. En effet, cette zone centrale qui reçoit la butée avant et la talonnière arrière pour la fixation d'une chaussure, ou qui reçoit une plateforme pour le montage de la fixation d'une chaussure, d'une part, est rigidifiée par cet ensemble fixation-chaussure et, d'autre part, est soumise à des contraintes très importantes, notamment à ses extrémité de raccordement respectivement avec les zones avant et arrière du ski. Il peut en résulter, si la lame métallique joue un rôle prépondérant dans le renfort supérieur, des déformations définitives de cette lame métallique, correspondant à une destruction du ski. Il est donc intéressant de pouvoir limiter l'importance de la lame métallique dans cette zone centrale du ski, et de privilégier un renfort à l'aide de la couche de fibres imprégnées de résine, dans la mesure où celle-ci possède une capacité de déformation à la flexion réversible beaucoup plus importante que la lame métallique.It is indeed interesting to reduce the width of the metal blade in the central area of the ski. Indeed, this central zone which receives the front stop and the rear heel for the attachment of a shoe, or which receives a platform for mounting the attachment of a shoe, on the one hand, is stiffened by this fixation assembly -Shoe and, on the other hand, is subject to very significant constraints, especially at its connecting end respectively with the front and rear ski areas. It can result, if the metal blade plays a preponderant role in the upper reinforcement, definitive deformations of this metal blade, corresponding to a destruction of the ski. It is therefore interesting to be able to limit the importance of the metal blade in this central area of the ski, and to favor a reinforcement with the resin impregnated fiber layer, insofar as it has a capacity of reversible bending deformation much larger than the metal blade.

Suivant une première possibilité, la largeur de la lame métallique est maximale dans la zone avant de la planche, c'est-à-dire sensiblement de la largeur de celle-ci, est minimale dans la zone centrale ou zone de patin, c'est-à-dire inférieure à la largeur de la planche, et augmente dans la zone arrière de la planche.According to a first possibility, the width of the metal blade is maximum in the front zone of the board, that is to say substantially of the width thereof, is minimal in the central zone or skate zone, c ' that is, less than the width of the board, and increases in the rear area of the board.

Dans le cas d'un ski réalisé suivant cette possibilité, celui-ci possède une bonne raideur à la torsion dans sa zone avant ainsi que dans sa zone arrière, ce qui lui donne un comportement de ski plus spécialement adapté au slalom géant où il s'agit de disposer d'une bonne précision de guidage à l'aide d'une bonne raideur en torsion de la zone avant du ski et d'éviter le dérapage en sortie de virage grâce à une bonne raideur en torsion de l'arrière du ski.In the case of a ski made according to this possibility, it has a good torsion stiffness in its front zone as well as in its rear zone, which gives it a ski behavior more specifically adapted to the giant slalom where it s is to have a good guide accuracy using a good torsional stiffness of the front zone of the ski and to avoid skidding at corner exit thanks to good torsional stiffness of the rear of the ski ski.

Suivant une autre forme d'exécution de cette planche, la largeur de la lame métallique est maximale dans la zone avant de la planche et diminue jusque dans la zone arrière de la planche. Dans ce cas, pour la réalisation d'un ski, ce ski est plus confortable à skier que le ski défini précédemment, dans la mesure où la raideur en torsion de la zone arrière étant moindre, ce ski a tendance à déraper en sortie de virage.According to another embodiment of this board, the width of the metal blade is maximum in the front area of the board and decreases into the rear area of the board. In this case, for the realization of a ski, this ski is more comfortable to ski than the ski defined above, insofar as the torsional stiffness of the rear area is less, this ski tends to skid out of the bend .

La couche de fibres imprégnées de résine peut être située au-dessus ou au-dessous de la lame métallique. Toutefois, elle est avantageusement située au-dessus, afin de pouvoir parfaitement suivre le profil de la face supérieure du ski.The resin impregnated fiber layer may be located above or below the metal blade. However, it is advantageously located above, in order to perfectly follow the profile of the upper face of the ski.

Suivant une possibilité, la couche de fibres imprégnées de résine et la lame métallique sont au contact l'une de l'autre.According to one possibility, the resin impregnated fiber layer and the metal blade are in contact with each other.

Suivant une forme d'exécution de cette planche, dans au moins une zone de la planche dans laquelle la lame métallique possède une largeur inférieure à celle de la couche de fibres imprégnées de résine, la couche de fibres comporte, au moins de l'un des côtés de la lame métallique, un retour s'étendant sensiblement dans le plan de la lame métallique..According to one embodiment of this board, in at least one zone of the board in which the metal blade has a width less than that of the resin-impregnated fiber layer, the fiber layer comprises at least one of sides of the metal blade, a return extending substantially in the plane of the metal blade.

La planche selon l'invention peut être une planche possédant une section sensiblement rectangulaire sur toute sa longueur, qu'il s'agisse d'une planche comportant deux parois latérales distinctes de la paroi supérieure, ou d'une planche de type à coque, dans laquelle les parois latérales sont constituées par les prolongements de la paroi supérieure, ou encore d'une planche dans laquelle la paroi supérieure comporte des prolongements formant pour partie les parois latérales, dans la mesure où ces prolongements viennent prendre appui sur au moins une partie de la longueur de la planche sur des éléments de renforcement reposant sur l'ensemble inférieur, et notamment sur les carres.The board according to the invention may be a board having a substantially rectangular section over its entire length, whether it is a board having two separate side walls of the upper wall, or a board type shell, wherein the side walls are constituted by the extensions of the upper wall, or a board in which the upper wall has extensions forming part of the side walls, to the extent that these extensions are supported on at least a part the length of the board on reinforcing elements resting on the lower assembly, and in particular on the edges.

Suivant une forme d'exécution de cette planche, celle-ci comporte dans ses zones avant et arrière une section générale rectangulaire, tandis que sa face supérieure présente, dans sa zone centrale ou zone de patin, deux nervures longitudinales disposées du côté des deux bords de la planche, raccordées par une partie centrale plus basse, la couche de fibres imprégnées de résine suivant sensiblement, d'un bord à l'autre de la planche, le profil de la face supérieure, et la lame métallique ayant une largeur correspondant à celle de la partie centrale de la face supérieure et étant disposée en-dessous de cette partie centrale.According to one embodiment of this board, it comprises in its front and rear areas a rectangular general section, while its upper face has, in its central zone or shoe area, two longitudinal ribs arranged on the side of the two edges. of the board, connected by a lower central portion, the layer of resin-impregnated fibers substantially following, from one edge to the other of the board, the profile of the upper face, and the metal blade having a width corresponding to that of the central portion of the upper face and being disposed below this central portion.

Il est intéressant de noter que, dans cette forme d'exécution, la largeur développée de la paroi externe de la partie supérieure de la planche, c'est-à-dire la largeur développée de la couche de fibres imprégnées de résine, est augmentée du fait de la présence des deux nervures longitudinales. Il en résulte une augmentation de la quantité de fibres de la couche de renfort fibreux, par rapport au cas où le dessus de la planche serait plat. En outre, la couche de fibres suivant sensiblement la face supérieure de la planche, s'éloigne de la fibre neutre de la planche dans la zone des nervures, ce qui assure une augmentation de la résistance à la flexion et à la torsion. En outre, la forme de tuile que possède la couche de fibres dans la zone de chaque nervure, améliore sa rigidité dans cette zone.It is interesting to note that, in this embodiment, the developed width of the outer wall of the upper part of the board, that is to say the developed width of the resin-impregnated fiber layer, is increased. due to the presence of the two longitudinal ribs. This results in an increase in the amount of fiber in the fibrous reinforcement layer, compared to the case where the top of the board would be flat. In addition, the fiber layer substantially following the upper face of the board, moves away from the neutral fiber of the board in the area of the ribs, which ensures an increase in resistance to bending and torsion. In addition, the tile shape of the fiber layer in the area of each rib improves its rigidity in this area.

Suivant une autre forme d'exécution, cette planche comporte une nervure centrale s'étendant sur une grande partie de sa longueur, et de largeur décroissante de la spatule au talon, la couche de fibres imprégnées de résine suivant sensiblement, d'un bord à l'autre de la planche, le profil de la face supérieure et la lame métallique ayant une largeur égale à celle du fond de la nervure et étant disposée en regard de ce fond.According to another embodiment, this board has a central rib extending over a large part of its length, and of decreasing width from the spatula to the heel, the layer of resin-impregnated fibers substantially following from one edge to the other. the other of the board, the profile of the upper face and the metal blade having a width equal to that of the bottom of the rib and being disposed opposite this bottom.

Dans ce cas encore, on trouve une augmentation de la quantité de fibres compte tenu d'une augmentation de la largeur développée de la couche de fibres, qui suit la nervure centrale, un éloignement de la fibre par rapport à la fibre neutre, et une rigidification de la couche de fibres par effet de tuile au niveau de la nervure. En ce qui concerne la lame métallique, il faut noter que, dans la mesure où elle suit la nervure, elle s'éloigne également de la fibre neutre dans la zone centrale de la planche, ce qui augmente notamment sa résistance à la flexion.In this case again, there is an increase in the amount of fibers taking into account an increase in the developed width of the fiber layer, which follows the central rib, a distance from the fiber relative to the neutral fiber, and a stiffening of the fiber layer by tile effect at the rib. Regarding the metal blade, it should be noted that, insofar as it follows the rib, it also moves away from the neutral fiber in the central zone of the board, which in particular increases its resistance to bending.

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 d'un ski selon l'invention :

  • Figure 1 est une vue en perspective d'un premier ski comportant deux nervures longitudinales dans sa zone centrale ;
  • Figure 2 est une vue de dessus de ce ski ;
  • Figures 3 à 5 en sont trois vues en coupe transversale dans ses zones arrière, centrale et avant respectivement, les coupes étant réalisées suivant les lignes III-III, IV-IV et V-V de figure 2 ;
  • Figures 6 à 10 sont cinq vues d'un second ski correspondant respectivement aux figures 1 à 5 ;
  • Figures 11 à 13 sont trois vues en coupe transversale dans la zone avant, dans la zone centrale et dans la zone arrière, d'un ski de section rectangulaire.
In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing showing, by way of nonlimiting examples, several embodiments of a ski according to the invention:
  • Figure 1 is a perspective view of a first ski having two longitudinal ribs in its central zone;
  • Figure 2 is a top view of this ski;
  • Figures 3 to 5 are three cross-sectional views in its rear, central and front respectively, the sections being made along the lines III-III, IV-IV and VV of Figure 2;
  • Figures 6 to 10 are five views of a second ski respectively corresponding to Figures 1 to 5;
  • Figures 11 to 13 are three cross-sectional views in the front zone, in the central zone and in the rear zone, of a ski of rectangular section.

Le ski représenté aux figures 1 à 5 comprend un ensemble inférieur constitué par une semelle de glissement 2 bordée longitudinalement par deux arêtes métalliques appelées carres 3. Sur l'ensemble inférieur qui peut éventuellement être équipé d'un renfort, non représenté au dessin, repose un noyau 4. De part et d'autre de ce noyau 4, sont disposées des parois longitudinales 5 qui, dans cette forme d'exécution, ne s'étendent pas sur tout la hauteur du ski. L'ensemble supérieur du ski comprend une paroi supérieure 6 formant la face supérieure et comportant deux retours longitudinaux 7 formant une partie des parois longitudinales et reposant sur les éléments 5. Ce ski comporte, sur toute sa longueur utile ou longueur active, c'est-à-dire entre sa ligne de contact avant et sa ligne de contact arrière avec la neige, un renfort supérieur continu constitué par une lame métallique 8, par exemple à base d'alliage d'aluminium connu sous le nom commercial de Zycral, et une couche 9 de fibres, telles que des fibres de verre, de carbone ou de d'aramide ou un mélange de telles fibres imprégnées de résine.The ski shown in Figures 1 to 5 comprises a lower assembly constituted by a sliding sole 2 bordered longitudinally by two metal edges called edges 3. On the lower assembly which may optionally be equipped with a reinforcement, not shown in the drawing, rests a core 4. On either side of this core 4, are arranged longitudinal walls 5 which, in this embodiment, do not extend over the entire height of the ski. The upper assembly of the ski comprises an upper wall 6 forming the upper face and having two longitudinal returns 7 forming part of the longitudinal walls and resting on the elements 5. This ski comprises, over its entire length or length active, it is between its forward contact line and its rear contact line with the snow, a continuous upper reinforcement constituted by a metal blade 8, for example based on an aluminum alloy known under the trade name Zycral, and a layer 9 of fibers, such as glass, carbon or aramid fibers or a mixture of such resin-impregnated fibers.

Dans la forme d'exécution représentée au dessin, la couche fibreuse 9 s'étend sur toute la largeur du ski, d'un élément longitudinal 5 situé d'un côté à l'autre élément longitudinal situé de l'autre côté.In the embodiment shown in the drawing, the fibrous layer 9 extends over the entire width of the ski, a longitudinal member 5 located from one side to the other longitudinal member located on the other side.

Ce ski possède, dans ses zones arrière 10 et avant 12, une section sensiblement rectangulaire, avec une surface supérieure sensiblement plane, tandis qu'il présente, dans sa zone centrale 13, deux nervures longitudinales 14 disposées du côté des deux bords du ski, et raccordées par une partie centrale plane plus basse 15.This ski has, in its rear zones 10 and before 12, a substantially rectangular section, with a substantially flat upper surface, while it has, in its central zone 13, two longitudinal ribs 14 arranged on the side of the two edges of the ski, and connected by a lower flat central portion 15.

Il ressort clairement de la figure 4, qui est une vue en coupe transversale dans la zone centrale 13, que la couche fibreuse 9 suit le profil de la face supérieure, et notamment le profil des nervures 14, ce qui augmente la largeur dévéloppée de la couche fibreuse 9 par rapport au cas où le ski serait rectangulaire.It is clear from FIG. 4, which is a cross-sectional view in the central zone 13, that the fibrous layer 9 follows the profile of the upper face, and in particular the profile of the ribs 14, which increases the expanded width of the fibrous layer 9 relative to the case where the ski would be rectangular.

En ce qui concerne la lame métallique 8, il est visible aux figures 3 et 5 que cette lame possède, dans la zone arrière 10 et dans la zone avant 12, sensiblement la largeur de la paroi supérieure 6, tandis que dans la zone centrale 13 du ski elle possède une largeur correspondant sensiblement à celle de la partie centrale 15 disposée entre les deux nervures 14.With regard to the metal blade 8, it can be seen in FIGS. 3 and 5 that this blade has, in the rear zone 10 and in the front zone 12, substantially the width of the upper wall 6, while in the central zone 13 ski has a width corresponding substantially to that of the central portion 15 disposed between the two ribs 14.

Compte tenu de la largeur relativement importante de la lame 8 dans les zones arrière 10 et avant 12, le ski concerné possède une bonne rigidité à la torsion dans ces deux zones, ce qui en fait un ski possèdant une bonne précision de guidage en début de virage, ainsi qu'un bon accrochage en sortie de virage, ce qui correspond aux caractéristiques d'un ski de slalom géant. En ce qui concerne la partie centrale, elle comporte une lame métallique de largeur réduite, avec augmentation de la quantité de couche fibreuse et éloignement de la couche fibreuse par rapport à la fibre neutre. C'est donc la couche fibreuse qui est privilégiée en tant que renfort dans la zone centrale du ski, ce qui est avantageux, dans la mesure où cette zone centrale répond à des sollicitations importantes, notamment en avant et en arrière de la fixation, la zone de fixation étant rigidifiée par la chaussure et éventuellement une plateforme de montage de la fixation de la chaussure.Given the relatively large width of the blade 8 in the rear zones 10 and 12 before, the ski concerned has a good torsional stiffness in these two areas, which makes a ski with good guiding accuracy at the beginning of turn, as well as a good grip at the end of the turn, which corresponds to the characteristics of a giant slalom ski. As regards the central part, it comprises a metal blade of reduced width, with increasing the amount of fibrous layer and removal of the fibrous layer relative to the neutral fiber. It is therefore the fibrous layer which is preferred as a reinforcement in the central zone of the ski, which is advantageous, insofar as this central zone responds to important stresses, especially in front and behind the binding, the fixing area being stiffened by the shoe and possibly a mounting platform of the attachment of the shoe.

Les figures 6 à 10 présentent un autre ski, dans lequel les mêmes éléments sont désignés par les mêmes références que précédemment.Figures 6 to 10 show another ski, wherein the same elements are designated by the same references as before.

Ce ski présente, sur une grande partie de sa longueur, une nervure centrale 16 de largeur décroissante de l'avant vers l'arrière, la surface supérieure de la nervure ayant à l'avant 12 une largeur L1 supérieure à la largeur L2 au niveau du patin 13, elle-même supérieure à la largeur L3 à l'arrière 10 du ski, comme montré aux figures 8 à 10. La couche fibreuse 9 épouse la forme de la nervure centrale, comme montré aux figures 8 et 9, tandis que la lame métallique 8 possède une largeur correspondant sensiblement à celle du fond de la rainure.This ski has, over a large part of its length, a central rib 16 of decreasing width from front to rear, the upper surface of the rib having at the front 12 a width L 1 greater than the width L 2 at the level of the shoe 13, itself greater than the width L 3 at the rear 10 of the ski, as shown in FIGS. 8 to 10. The fibrous layer 9 matches the shape of the central rib, as shown in FIGS. 8 and 9 while the metal blade 8 has a width substantially corresponding to that of the bottom of the groove.

Dans le cas de ce ski, la largeur de la lame 8 est décroissante de l'avant du ski jusqu'au talon de celui-ci. Comme dans le cas du ski précédent, la forme de la couche fibreuse, sa largeur et son positionnement par rapport à la fibre neutre influent sur le comportement du ski. En outre, dans le cas de ce ski, la largeur de la lame métallique étant inférieure dans la zone arrière 10, ce ski est un ski beaucoup plus confortable que le ski décrit en référence aux figures 1 à 5, puisque, s'il bénéficie d'une bonne rigidité en torsion à son extrémité avant, assurant un bon guidage en début de virage, sa rigidité en torsion est moindre dans sa zone arrière, permettant plus facilement de déraper.In the case of this ski, the width of the blade 8 is decreasing from the front of the ski to the heel thereof. As in the case of the previous ski, the shape of the fibrous layer, its width and its positioning in relation to the neutral fiber affect the behavior of the ski. In addition, in the case of this ski, the width of the metal blade being lower in the rear zone 10, this ski is a ski much more comfortable than the ski described with reference to Figures 1 to 5, since, if it enjoys with a good torsional rigidity at its front end, ensuring good guidance at the beginning of the turn, its torsional stiffness is lower in its rear area, making it easier to skid.

Les figures 11 à 13 sont trois vues en coupe respectivement dans la zone avant, dans la zone centrale et dans la zone arrière d'un ski de section rectangulaire. Dans ce cas, le ski comporte des éléments longitudinaux 17, sur lesquels repose une paroi supérieure distincte 18. Les figures 11 à 13 montrent une forme d'exécution de ce ski, dans laquelle la couche fibreuse 9 s'étend sur toute la largeur du noyau, tandis que la lame métallique 8 possède une largeur qui décroît depuis l'avant du ski jusqu'à l'arrière de celui-ci comme montré aux figures 11 à 13.Figures 11 to 13 are three sectional views respectively in the front zone, in the central zone and in the rear zone of a ski of rectangular section. In this case, the ski comprises longitudinal elements 17, on which rests a separate upper wall 18. FIGS. 11 to 13 show an embodiment of this ski, in which the fibrous layer 9 extends over the entire width of the ski core, while the metal blade 8 has a width which decreases from the front of the ski to the rear thereof as shown in Figures 11 to 13.

Comme il ressort de ce qui précède, l'invention apporte une grande amélioration à la technique existante en fournissant une planche de glisse sur neige, dont les caractéristiques de comportement peuvent être modifiées en faisant varier les paramètres relatifs des deux composants, respectivement une lame métallique et une couche fibreuse, constitutifs du renfort supérieur du ski.As can be seen from the foregoing, the invention brings a great improvement to the existing technique by providing a snow sliding board, the behavior characteristics of which can be modified by varying the relative parameters of the two components, respectively a metal blade. and a fibrous layer constituting the upper reinforcement of the ski.

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de cette planche de glisse sous forme de ski, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes. C'est ainsi notamment que les différentes caractéristiques de variation des proportions, quantités, positionnements par rapport à la fibre neutre et formes des composants, décrits ci-dessus pourraient être combinés de façons différentes sans que l'on sorte pour autant du cadre de l'invention.It goes without saying that the invention is not limited to the embodiments of this ski board in the form of ski, described above as examples, it encompasses all variants. It is thus that the different characteristics of variation of the proportions, quantities, positioning with respect to the neutral fiber and forms of the components described above could be combined in different ways without going beyond the scope of the invention. 'invention.

Claims (10)

  1. A board for gliding over snow that includes an upper reinforcement, of the type comprising a metal blade (8) and a layer (9) of superposed resin-impregnated fibres, this reinforcement extending continuously over substantially the entire useful length of the board and the respective quantities and/or the respective forms and/or the respective positionings relative to the neutral fibre of the metal blade (8) and of the layer (9) of fibres varying, differently, over the length of the board, the layer (9) of resin-impregnated fibres extending over substantially the entire width of the upper face of the board and over substantially the entire length of the board, whilst the width of the metal blade (8) varies over the length of the board, characterized in that the width of the metal blade (8) is at its maximum in a front zone (12) of the board and corresponds substantially to the width of the upper face of the latter, and decreases towards the central zone (13) or underfoot zone, of the board, where its width is less than the width of the upper face of the board.
  2. Board according to Claim 1, characterized in that the width of the metal blade (8) is at its maximum in the front zone (12) of the board, i.e. substantially of the width of the latter, is at its minimum in the central zone (13), or underfoot zone, i.e. less than the width of the upper face of the board, and increases in the rear zone (10) of the board.
  3. Board according to Claim 1, characterized in that the width of the metal blade (8) is at its maximum in the front zone (12) of the board and decreases as far as into the rear zone (10) of the board.
  4. Board according to one of Claims 1 to 3, characterized in that the layer (9) of resin-impregnated fibres is located above the metal blade (8).
  5. Board according to one of Claims 1 to 4, characterized in that the layer (9) of resin-impregnated fibres and the metal blade (8) are in contact with one another.
  6. Board according to one of Claims 1 to 5, characterized in that it includes, in its front (12) and rear (10) zones, a general rectangular section, whilst its upper face has, in its central zone (13), or underfoot zone, two longitudinal ribs (14) arranged on the side of the two edges of the board, connected by a lower central part (15), the layer (9) of resin-impregnated fibres substantially following, from one edge to the other of the board, the profile of the upper face (6, 7), and the metal blade (8) having a width corresponding to that of the central part of the upper face and being arranged below this central part.
  7. Board according to one of Claims 1 to 5, characterized in that it includes a central rib (16) extending over a large part of its length and of a width that decreases from the tip to the heel, the layer (9) of resin-impregnated fibres substantially following, from one edge to the other of the board, the profile of the upper face (6, 7), and the metal blade (8) having a width equal to that of the bottom of the rib (16) and being arranged opposite said bottom.
  8. Board according to one of Claims 1 to 5, characterized in that it has a section of general rectangular shape over its entire length.
  9. Board according to one of Claims 1 to 8, characterized in that it consists of a ski.
  10. Board according to one of Claims 1 to 8, characterized in that it consists of a snowboard.
EP01420140A 2000-06-20 2001-06-18 Snowboard with an upper reinforcing element Expired - Lifetime EP1166832B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0007871A FR2810250B1 (en) 2000-06-20 2000-06-20 SNOW SNOWBOARD WITH UPPER REINFORCEMENT
FR0007871 2000-06-20

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EP1166832A1 EP1166832A1 (en) 2002-01-02
EP1166832B1 true EP1166832B1 (en) 2006-06-14

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AT (1) ATE329664T1 (en)
DE (1) DE60120565T2 (en)
FR (1) FR2810250B1 (en)

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US7840281B2 (en) 2006-07-21 2010-11-23 Boston Scientific Scimed, Inc. Delivery of cardiac stimulation devices
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US7532933B2 (en) 2004-10-20 2009-05-12 Boston Scientific Scimed, Inc. Leadless cardiac stimulation systems
EP1693089B1 (en) 2005-02-16 2009-01-07 Skis Rossignol Slide board
FR2881962B1 (en) * 2005-02-16 2007-03-23 Skis Rossignol Sa Sa BOARD OF SLIDERS
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US7647109B2 (en) 2004-10-20 2010-01-12 Boston Scientific Scimed, Inc. Leadless cardiac stimulation systems
US7650186B2 (en) 2004-10-20 2010-01-19 Boston Scientific Scimed, Inc. Leadless cardiac stimulation systems
US8340780B2 (en) 2004-10-20 2012-12-25 Scimed Life Systems, Inc. Leadless cardiac stimulation systems
US7840281B2 (en) 2006-07-21 2010-11-23 Boston Scientific Scimed, Inc. Delivery of cardiac stimulation devices

Also Published As

Publication number Publication date
EP1166832A1 (en) 2002-01-02
FR2810250A1 (en) 2001-12-21
FR2810250B1 (en) 2002-08-02
ATE329664T1 (en) 2006-07-15
DE60120565D1 (en) 2006-07-27
DE60120565T2 (en) 2007-05-31

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