EP0543744A1 - Ski with a non-rectangular cross-section - Google Patents

Ski with a non-rectangular cross-section Download PDF

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Publication number
EP0543744A1
EP0543744A1 EP92420416A EP92420416A EP0543744A1 EP 0543744 A1 EP0543744 A1 EP 0543744A1 EP 92420416 A EP92420416 A EP 92420416A EP 92420416 A EP92420416 A EP 92420416A EP 0543744 A1 EP0543744 A1 EP 0543744A1
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EP
European Patent Office
Prior art keywords
ski
core
ski according
reinforcing element
reinforcing
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.)
Granted
Application number
EP92420416A
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German (de)
French (fr)
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EP0543744B1 (en
Inventor
Roger Abondance
Jean Bauvois
Laurent Boix Vives
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Skis Rossignol SA
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Skis Rossignol SA
Rossignol SA
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Publication of EP0543744A1 publication Critical patent/EP0543744A1/en
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Publication of EP0543744B1 publication Critical patent/EP0543744B1/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
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/126—Structure of the core
    • 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
    • A63C5/12—Making thereof; Selection of particular materials

Definitions

  • the present invention relates to a shaped ski, of non-rectangular section.
  • skis comprising a filling core made of synthetic foam, for example polyurethane, which has excellent properties of stability over time, and is of low weight.
  • the documents FR 2 611 518, FR 2 615 404 and EP 0 394 835 relate to shaped skis, comprising a shell forming the inclined lateral faces of the ski, a core of rectangular section, reinforcing elements in contact with the inclined walls, with space management between the inclined walls and the core, which is filled with viscoelastic elements having a vibration damping power.
  • the longitudinal reinforcing elements provide excellent support for the edge, as well as the transmission of the forces received by each edge towards the upper face of the ski provided with the binding.
  • Each reinforcement element can extend practically over the entire height of the ski and serve as a support, on the one hand, for an edge and, on the other hand, for the upper face of the ski, or on the contrary only extend over part of the height of the ski, and be associated with a reinforcing element in contact with the upper wall of the hull, and taking up the forces transmitted from the edge.
  • This force recovery element can be constituted for example by a fabric impregnated with resin.
  • Each reinforcement element can be produced in several parts butted in the longitudinal direction and produced in materials having different characteristics, or in several parts juxtaposed and produced in different materials.
  • the reinforcing elements are rigid, the end zones of these same elements being able to be more flexible and produced. for example in a viscoelastic material.
  • each reinforcing element can be made of a solid material, such as wood, a synthetic material, or else be made from fabric impregnated with resin and folded back on itself, or else in a multimaterial complex, such as Zicral-ABS, Zicral being a registered trademark for an aluminum alloy and ABS being acrylonitrile-butadiene-styrene.
  • the reinforcing elements extend over the entire active length of the ski, that is to say substantially between the front and rear contact zones of the ski on snow, while the shell completely covers the reinforcing elements.
  • a seal of viscoelastic material is interposed locally in the end zones of the ski between the hull and the upper part of each reinforcing element, or between the hull and the edges.
  • Such a ski can be obtained with prior production of the core and assembly in the mold of the shell reinforcement elements, or else by pre-assembly of the reinforcement elements with the shell before in situ molding of the core. It is also possible to extrude the reinforcing elements with the shell, before molding the core.
  • the ski shown in FIGS. 1 to 3 is a shaped ski, of non-rectangular section, comprising a filling core 2, for example made of polyurethane foam, a shell 3 forming the upper face 4 of the ski and the two lateral faces 5 thereof, longitudinal metal edges 6, and a sliding sole 7.
  • a filling core 2 for example made of polyurethane foam
  • a shell 3 forming the upper face 4 of the ski and the two lateral faces 5 thereof, longitudinal metal edges 6, and a sliding sole 7.
  • this ski comprises two longitudinal reinforcing elements 8, extending at least in the skid zone of the ski, arranged on either side of the core 2, between the latter and the inclined faces 5 of the shell 3.
  • Each reinforcing element 8 has a lower face serving to support an edge 6, so as to provide it with effective support.
  • each reinforcing element 8 extends practically over the entire height of the ski and serves to support the upper face 4 of the hull.
  • each reinforcing element has a face, intended to bear against the core, which is perpendicular to the plane of the sole.
  • FIG. 3 shows the location between the edges of the shell 3 and the base of the reinforcing elements and the edges 6, in the end zones, of a layer of viscoelastic material 9.
  • FIG. 4 represents a variant of the ski of FIGS. 1 to 3, in which each reinforcement element 18 extends over only part of the height of the ski, and is integral with a reinforcement element 19 constituted for example by a fabric impregnated with resin, which is itself in contact with the upper face 14 of the shell, and which is intended to transmit to the latter the forces to which the edges 16 are subjected.
  • FIG. 5 represents another embodiment of this ski, in which each reinforcing element 28 has a face intended to bear against the core 22, which is inclined relative to the perpendicular to the plane of the sole.
  • FIG. 6 represents a ski, without the shell, in top view, in which each reinforcing element, designated by the general reference 38, has a constant base width over its entire length, the core 32 having for its part a width variable to take account of the ski's dimension lines.
  • each reinforcing element is constituted by a multimaterial complex, comprising at least two different materials, for example a central layer of Zicral 38a and two lateral layers of ABS 38b.
  • FIG. 7 shows another embodiment, in which each reinforcing element 48 has a variable base width along the ski over its entire length, while the core 42 has, for its part, a constant width along the ski.
  • each reinforcing element comprises a central part 48a extending at least in the ski skid zone, made of a rigid material, and two end zones respectively before 48b and rear 48c, which are butted longitudinally to the area 48a, and which are made of a material having different characteristics, for example in a viscoelastic material.
  • Such a combination is advantageous insofar as it is necessary to have excellent support at the level of the pad, which is achieved by the rigid element 48a, and that it is advantageous to obtain good damping at the level of the ends, which is obtained thanks to the viscoelastic elements 48b and 48c.
  • the invention brings a great improvement to the existing technique by providing a shaped ski, of non-rectangular section, having the presentation qualities of skis with a hull, while having the technical characteristics of behavior of the traditional skis.
  • reinforcing elements could be monolithic, or that the reinforcing elements could only extend in the central part of the ski, or that some of the characteristics, described with reference to an embodiment, could be combined with features described with reference to another embodiment without departing from the scope of the invention.

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  • Laminated Bodies (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Ski comprising a filling core, for example made from polyurethane foam, a shell forming the upper face and the lateral faces of the ski, a lower face equipped with longitudinal metal edges and with a central sliding running sole. According to the invention, this ski comprises two longitudinal reinforcement elements (8) extending at least in the central part of the ski, arranged on either side of the core (2), in contact both with the latter and with the parts of the inner surface of the shell (3) forming the lateral faces, each reinforcement element including a lower face extending to a large extent over the width of the corresponding edge (6), so as to provide it with an effective support, and extending over at least a part of the height of the ski. <IMAGE>

Description

La présente invention a pour objet un ski en forme, de section non rectangulaire.The present invention relates to a shaped ski, of non-rectangular section.

Il est de plus en plus fréquent de réaliser des skis en forme, c'est-à-dire des skis de section non rectangulaire possédant une coque formant la face supérieure et les faces latérales du ski, ces faces latérales étant éventuellement inclinées sur au moins une partie de leur hauteur. Dans ce cas, cette inclinaison peut être constante, ou variable sur la longueur du ski, et procurée par des surfaces planes ou courbes.It is more and more frequent to produce shaped skis, that is to say skis of non-rectangular section having a shell forming the upper face and the side faces of the ski, these side faces being possibly inclined on at least part of their height. In this case, this inclination can be constant, or variable over the length of the ski, and provided by flat or curved surfaces.

Il est également avantageux de réaliser des skis comportant un noyau de remplissage en mousse de matière synthétique, par exemple de polyuréthanne, qui possède d'excellentes propriétés de stabilité dans le temps, et est d'un poids peu élevé.It is also advantageous to produce skis comprising a filling core made of synthetic foam, for example polyurethane, which has excellent properties of stability over time, and is of low weight.

L'avantage d'un ski traditionnel, est notamment qu'il possède des chants rigides, par exemple en ABS ou en stratifié phénolique, assurant une excellente transmission des efforts exercés par la surface de neige sur les carres du ski, vers la face supérieure de celui-ci équipée de la fixation pour une chaussure du skieur.The advantage of a traditional ski, is in particular that it has rigid edges, for example ABS or phenolic laminate, ensuring an excellent transmission of the forces exerted by the snow surface on the edges of the ski, towards the upper face. of it equipped with the fixation for a shoe of the skier.

Les documents FR 2 611 519 et WO 91/08029 décrivent un ski à coque dont les parois latérales sont inclinées, comportant un noyau de section rectangulaire, et dans lequel la transmission des efforts entre les carres et la face supérieure est réalisée par des éléments de renfort situés au contact des parois inclinées, et formés par exemple par des feuilles de tissu imprégnées de résine. L'espace entre le noyau central et les faces latérales est occupé par un matériau de remplissage.The documents FR 2 611 519 and WO 91/08029 describe a ski with a shell whose side walls are inclined, comprising a core of rectangular section, and in which the transmission of the forces between the edges and the upper face is carried out by elements of reinforcement located in contact with the inclined walls, and formed for example by sheets of fabric impregnated with resin. The space between the central core and the side faces is occupied by a filling material.

Les documents FR 2 611 518, FR 2 615 404 et EP 0 394 835 concernent des skis en forme, comportant une coque formant les faces latérales inclinées du ski, un noyau de section rectangulaire, des éléments de renfort au contact des parois inclinées, avec ménagement d'un espace entre les parois inclinées et le noyau, qui est rempli par des éléments viscoélastiques possédant un pouvoir d'amortissement des vibrations.The documents FR 2 611 518, FR 2 615 404 and EP 0 394 835 relate to shaped skis, comprising a shell forming the inclined lateral faces of the ski, a core of rectangular section, reinforcing elements in contact with the inclined walls, with space management between the inclined walls and the core, which is filled with viscoelastic elements having a vibration damping power.

L'inconvénient de ces différentes solutions résulte du fait qu'il n'existe pas d'éléments larges assurant une transmission directe des efforts depuis les carres jusqu'à la face supérieure équipée de la fixation puisque le noyau ne prend pas appui sur les carres, et que les éléments de renforcement de la coque sont plaqués contre les flans inclinés de celle-ci et prennent un appui ponctuel sur chaque carre.The disadvantage of these different solutions results from the fact that there are no large elements ensuring a direct transmission of forces from the edges to the upper face equipped with the fixing since the core does not bear on the edges , and that the reinforcing elements of the hull are pressed against the inclined blanks thereof and take a punctual support on each edge.

Il en résulte donc des skis qui possèdent des caractéristiques de comportement moyennes, et qui ne peuvent pas satisfaire aux critères d'exigence requis, notamment en compétition où la précision de guidage souhaitée pour les skis impose une transmission aussi parfaite que possible des efforts depuis les carres vers la face supérieure du ski.This therefore results in skis which have average behavioral characteristics, and which cannot meet the required criteria, in particular in competition where the desired guidance precision for the skis requires as perfect a transmission of forces from the edges towards the upper face of the ski.

Le but de l'invention est de fournir un ski en forme, de section non rectangulaire, comportant un noyau de remplissage, par exemple en mousse de matière synthétique, et notamment de polyuréthanne, dont la face supérieure et les faces latérales soient constituées par une coque, afin de posséder la qualité de finition des skis comportant une coque, tout en offrant les qualités techniques des skis traditionnels en assurant, au moins au niveau du patin, une transmission directe des efforts depuis les carres jusqu'à la face supérieure du ski équipée de la fixation.The object of the invention is to provide a shaped ski, of non-rectangular section, comprising a filling core, for example made of synthetic foam, and in particular of polyurethane, the upper face and the lateral faces of which are constituted by a shell, in order to have the quality of finish of skis comprising a shell, while offering the technical qualities of traditional skis by ensuring, at least at the level of the skate, a direct transmission of the forces from the edges to the upper face of the ski equipped with fixing.

A cet effet, le ski selon l'invention comprend deux éléments de renforcement longitudinaux s'étendant au moins dans la partie centrale du ski, disposés de part et d'autre du noyau, au contact à la fois de celui-ci et les parties de la surface intérieure de la coque formant les faces latérales, chaque élément de renforcement comportant une face inférieure s'étendant en grande partie sur la largeur de la carre correspondante, de façon à lui procurer un appui efficace, et s'étendant sur au moins une partie de la hauteur du ski.To this end, the ski according to the invention comprises two longitudinal reinforcing elements extending at least in the central part of the ski, arranged on either side of the core, in contact with both the latter and the parts of the inner surface of the shell forming the lateral faces, each reinforcing element comprising a lower face extending largely over the width of the corresponding edge, so as to provide it with effective support, and extending over at least part of the height of the ski.

Les éléments de renforcement longitudinaux assurent un excellent appui de la carre, ainsi que la transmission des efforts reçus par chaque carre vers la face supérieure du ski munie de la fixation. Chaque élément de renforcement peut s'étendre pratiquement sur toute la hauteur du ski et servir de support, d'une part, à une carre et, d'autre part, à la face supérieure du ski, ou s'étendre au contraire seulement sur une partie de la hauteur du ski, et être associé à un élément de renfort en contact avec la paroi supérieure de la coque, et reprenant les efforts transmis à partir de la carre. Cet élément de reprise d'effort peut être constitué par exemple par un tissu imprégné de résine.The longitudinal reinforcing elements provide excellent support for the edge, as well as the transmission of the forces received by each edge towards the upper face of the ski provided with the binding. Each reinforcement element can extend practically over the entire height of the ski and serve as a support, on the one hand, for an edge and, on the other hand, for the upper face of the ski, or on the contrary only extend over part of the height of the ski, and be associated with a reinforcing element in contact with the upper wall of the hull, and taking up the forces transmitted from the edge. This force recovery element can be constituted for example by a fabric impregnated with resin.

Chaque élément de renforcement peut avoir une face située du côté du noyau, perpendiculaire au plan de la semelle ou, au contraire, inclinée par rapport à la perpendiculaire au plan de la semelle, posséder une largeur constante sur toute la longueur du ski, le noyau possédant une largeur variable, ou, au contraire, posséder une largeur variable le long du ski, le noyau possédant dans un tel cas une largeur constante.Each reinforcement element may have a face situated on the side of the core, perpendicular to the plane of the sole or, on the contrary, inclined relative to the perpendicular to the plane of the sole, have a constant width over the entire length of the ski, the core having a variable width, or, on the contrary, having a variable width along the ski, the core having in such a case a constant width.

Chaque élément de renforcement peut être réalisé en plusieurs parties aboutées dans le sens longitudinal et réalisé en des matériaux possédant des caractéristiques différentes, ou encore en plusieurs parties juxtaposées et réalisées dans des matériaux différents.Each reinforcement element can be produced in several parts butted in the longitudinal direction and produced in materials having different characteristics, or in several parts juxtaposed and produced in different materials.

Dans tous les cas, il convient que dans la partie centrale du ski, c'est-à-dire dans la zone de patin, les éléments de renforcement soient rigides, les zones d'extrémité de ces mêmes éléments pouvant être plus souples et réalisées par exemple en un matériau viscoélastique.In all cases, it is advisable that in the central part of the ski, that is to say in the skate zone, the reinforcing elements are rigid, the end zones of these same elements being able to be more flexible and produced. for example in a viscoelastic material.

La partie rigide de chaque élément de renforcement peut être réalisée en un matériau massif, tel que du bois, une matière synthétique, ou encore être réalisée à partir de tissu imprégné de résine et replié sur lui-même, ou encore en un complexe multimatériaux, tel que Zicral-ABS, Zicral étant une marque déposée pour un alliage d'aluminium et l'ABS étant l'acrylonitrile-butadiène-styrène.The rigid part of each reinforcing element can be made of a solid material, such as wood, a synthetic material, or else be made from fabric impregnated with resin and folded back on itself, or else in a multimaterial complex, such as Zicral-ABS, Zicral being a registered trademark for an aluminum alloy and ABS being acrylonitrile-butadiene-styrene.

Il est également possible de jouer sur les caractéristiques et sur les formes respectives des deux éléments de renforcement opposés d'un même ski, pour donner à ce ski certaines caractéristiques de comportement. C'est ainsi que les deux éléments de renforcement opposé d'un même ski peuvent posséder des caractéristiques différentes de rigidité et d'amortissement, ou posséder des caractéristiques géométriques différentes, telles que largeur et/ou hauteur.It is also possible to play on the characteristics and on the respective shapes of the two opposite reinforcing elements of the same ski, to give this ski certain behavioral characteristics. Thus the two opposite reinforcing elements of the same ski can have different characteristics of rigidity and damping, or have different geometric characteristics, such as width and / or height.

Avantageusement, les éléments de renforcement s'étendent sur toute la longueur active du ski, c'est-à-dire sensiblement entre les zones de contact avant et arrière du ski sur la neige, tandis que la coque recouvre entièrement les éléments de renforcement.Advantageously, the reinforcing elements extend over the entire active length of the ski, that is to say substantially between the front and rear contact zones of the ski on snow, while the shell completely covers the reinforcing elements.

Conformément à une autre caractéristique de l'invention, un joint en matériau viscoélastique est interposé localement dans les zones d'extrémité du ski entre la coque et la partie supérieure de chaque élément de renforcement, ou entre la coque et les carres.According to another characteristic of the invention, a seal of viscoelastic material is interposed locally in the end zones of the ski between the hull and the upper part of each reinforcing element, or between the hull and the edges.

Un tel ski peut être obtenu avec réalisation préalable du noyau et assemblage dans le moule des éléments de renforcement de la coque, ou encore par préassemblage des éléments de renforcement à la coque avant moulage in situ du noyau. Il est également possible d'extruder les éléments de renforcement avec la coque, avant moulage du noyau.Such a ski can be obtained with prior production of the core and assembly in the mold of the shell reinforcement elements, or else by pre-assembly of the reinforcement elements with the shell before in situ molding of the core. It is also possible to extrude the reinforcing elements with the shell, before molding the core.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence aux dessins schématiques annexés représentant, à titre d'exemples non limitatifs, plusieurs formes d'exécution de ce ski :

  • Figure 1 est une vue de côté d'un ski selon l'invention ;
  • Figure 2 et 3 en sont deux vues en coupe transversale et à échelle agrandie respectivement selon les lignes II-II et III-III de figure 1 ;
  • Figure 4 est une vue en coupe transversale et à échelle agrandie d'une variante d'exécution de ce ski ;
  • Figure 5 est une vue en coupe transversale et à échelle agrandie d'une autre variante d'exécution de ce ski ;
  • Figures 6 et 7 sont deux vues de dessus d'un ski sans la coque montrant deux possibilités de réalisation des éléments de renforcement.
In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawings showing, by way of nonlimiting examples, several embodiments of this ski:
  • Figure 1 is a side view of a ski according to the invention;
  • Figure 2 and 3 are two views in cross section and on an enlarged scale respectively along the lines II-II and III-III of Figure 1;
  • Figure 4 is a cross-sectional view on an enlarged scale of an alternative embodiment of this ski;
  • Figure 5 is a cross-sectional view on an enlarged scale of another alternative embodiment of this ski;
  • Figures 6 and 7 are two top views of a ski without the shell showing two possibilities of realization of the reinforcing elements.

Le ski représenté aux figures 1 à 3, est un ski en forme, de section non rectangulaire, comprenant un noyau de remplissage 2, par exemple en mousse de polyuréthanne, une coque 3 formant la face supérieure 4 du ski et les deux faces latérales 5 de celui-ci, des carres métalliques longitudinales 6, et une semelle de glissement 7.The ski shown in FIGS. 1 to 3 is a shaped ski, of non-rectangular section, comprising a filling core 2, for example made of polyurethane foam, a shell 3 forming the upper face 4 of the ski and the two lateral faces 5 thereof, longitudinal metal edges 6, and a sliding sole 7.

Comme montré aux figures 2 et 3, ce ski comprend deux éléments de renforcement longitudinaux 8, s'étendant au moins dans la zone de patin du ski, disposés de part et d'autre du noyau 2, entre celui-ci et les faces inclinées 5 de la coque 3. Chaque élément de renforcement 8 comporte une face inférieure servant à l'appui d'une carre 6, de façon à lui procurer un appui efficace.As shown in FIGS. 2 and 3, this ski comprises two longitudinal reinforcing elements 8, extending at least in the skid zone of the ski, arranged on either side of the core 2, between the latter and the inclined faces 5 of the shell 3. Each reinforcing element 8 has a lower face serving to support an edge 6, so as to provide it with effective support.

Dans la forme d'exécution représentée aux figures 1 à 3, chaque élément de renforcement 8 s'étend pratiquement sur toute la hauteur du ski et sert au support de la face supérieure 4 de la coque. En outre, chaque élément de renforcement possède une face, destinée à prendre appui contre le noyau, qui est perpendiculaire au plan de la semelle. La figure 3 montre la localisation entre les bords de la coque 3 et la base des éléments de renforcement et les carres 6, dans les zones d'extrémités, d'une couche de matériau viscoélastique 9.In the embodiment shown in FIGS. 1 to 3, each reinforcing element 8 extends practically over the entire height of the ski and serves to support the upper face 4 of the hull. In addition, each reinforcing element has a face, intended to bear against the core, which is perpendicular to the plane of the sole. FIG. 3 shows the location between the edges of the shell 3 and the base of the reinforcing elements and the edges 6, in the end zones, of a layer of viscoelastic material 9.

La figure 4 représente une variante du ski de figures 1 à 3, dans lequel chaque élément de renforcement 18 s'étend sur une partie seulement de la hauteur du ski, et est solidaire d'un élément de renfort 19 constitué par exemple par un tissu imprégné de résine, qui est lui-même en contact avec la face supérieure 14 de la coque, et qui est destiné à transmettre à cette dernière les efforts auxquels sont soumises les carres 16.FIG. 4 represents a variant of the ski of FIGS. 1 to 3, in which each reinforcement element 18 extends over only part of the height of the ski, and is integral with a reinforcement element 19 constituted for example by a fabric impregnated with resin, which is itself in contact with the upper face 14 of the shell, and which is intended to transmit to the latter the forces to which the edges 16 are subjected.

La figure 5 représente une autre forme d'exécution de ce ski, dans laquelle chaque élément de renforcement 28 possède une face destinée à prendre appui contre le noyau 22, qui est inclinée par rapport à la perpendiculaire au plan de la semelle.FIG. 5 represents another embodiment of this ski, in which each reinforcing element 28 has a face intended to bear against the core 22, which is inclined relative to the perpendicular to the plane of the sole.

La figure 6 représente un ski, sans la coque, en vue de dessus, dans lequel chaque élément de renforcement, désigné par la référence générale 38, possède une largeur de base constante sur toute sa longueur, le noyau 32 possédant pour sa part une largeur variable pour tenir compte des lignes de cote du ski. En outre, dans cette forme d'exécution, chaque élément de renforcement est constitué par un complexe multimatériaux, comportant au moins deux matériaux différents, par exemple une couche centrale de Zicral 38a et deux couches latérales d'ABS 38b.FIG. 6 represents a ski, without the shell, in top view, in which each reinforcing element, designated by the general reference 38, has a constant base width over its entire length, the core 32 having for its part a width variable to take account of the ski's dimension lines. In addition, in this embodiment, each reinforcing element is constituted by a multimaterial complex, comprising at least two different materials, for example a central layer of Zicral 38a and two lateral layers of ABS 38b.

La figure 7 représente une autre forme d'exécution, dans laquelle chaque élément de renforcement 48 possède une largeur de base variable le long du ski sur toute sa longueur, tandis que le noyau 42 possède, pour sa part, une largeur constante le long du ski. En outre, et pour illustrer une autre possibilité de l'invention, chaque élément de renforcement comprend une partie centrale 48a s'étendant au moins dans la zone de patin du ski, réalisée en un matériau rigide, et deux zones d'extrémités respectivement avant 48b et arrière 48c, qui sont aboutées longitudinalement à la zone 48a, et qui sont réalisées en un matériau possédant des caractéristiques différentes, par exemple en un matériau viscoélastique. Une telle combinaison est intéressante dans la mesure où il est nécessaire de disposer d'un excellent appui au niveau du patin, ce qui est réalisé par l'élément rigide 48a, et qu'il est avantageux d'obtenir un bon amortissement au niveau des extrémités, ce qui est obtenu grâce aux éléments viscoélastiques 48b et 48c.FIG. 7 shows another embodiment, in which each reinforcing element 48 has a variable base width along the ski over its entire length, while the core 42 has, for its part, a constant width along the ski. In addition, and to illustrate another possibility of the invention, each reinforcing element comprises a central part 48a extending at least in the ski skid zone, made of a rigid material, and two end zones respectively before 48b and rear 48c, which are butted longitudinally to the area 48a, and which are made of a material having different characteristics, for example in a viscoelastic material. Such a combination is advantageous insofar as it is necessary to have excellent support at the level of the pad, which is achieved by the rigid element 48a, and that it is advantageous to obtain good damping at the level of the ends, which is obtained thanks to the viscoelastic elements 48b and 48c.

Comme il ressort de ce qui précède, l'invention apporte une grande amélioration à la technique existante en fournissant un ski en forme, de section non rectangulaire, possédant les qualités de présentation des skis à coque, tout en ayant les caractéristiques techniques de comportement des skis traditionnels.As is apparent from the above, the invention brings a great improvement to the existing technique by providing a shaped ski, of non-rectangular section, having the presentation qualities of skis with a hull, while having the technical characteristics of behavior of the traditional skis.

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de ce ski, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes de réalisation.As it goes without saying, the invention is not limited to the sole embodiments of this ski, described above by way of examples, on the contrary it embraces all of the variant embodiments thereof.

C'est ainsi notamment que les éléments de renforcement pourraient être monolithiques, ou que les éléments de renforcement ne pourraient s'étendre que dans la seule partie centrale du ski, ou que certaines des caractéristiques, décrites en référence à une forme d'exécution, pourraient être combinées avec des caractéristiques décrites en référence à une autre forme d'exécution sans que l'on sorte pour autant du cadre de l'invention.Thus in particular that the reinforcing elements could be monolithic, or that the reinforcing elements could only extend in the central part of the ski, or that some of the characteristics, described with reference to an embodiment, could be combined with features described with reference to another embodiment without departing from the scope of the invention.

Claims (18)

Ski en forme, de section non rectangulaire, comprenant un noyau de remplissage, par exemple en mousse de polyuréthanne, une coque formant la face supérieure et les faces latérales du ski, une face inférieure équipée de carres métalliques longitudinales et d'une semelle de glissement centrale, caractérisé en ce qu'il comprend deux éléments de renforcement longitudinaux (8, 18, 28, 38, 48) s'étendant au moins dans la partie centrale du ski, disposés de part et d'autre du noyau (2, 22, 32, 42), au contact à la fois de celui-ci et des parties de la surface intérieure de la coque (3) formant les faces latérales du ski, chaque élément de renforcement comportant une face inférieure s'étendant en grande partie sur la largeur de la carre (6) correspondante, de façon à lui procurer un appui efficace, et s'étendant sur au moins une partie de la hauteur du ski.Shaped ski, of non-rectangular section, comprising a filling core, for example of polyurethane foam, a shell forming the upper face and the lateral faces of the ski, a lower face equipped with longitudinal metal edges and a sliding sole central, characterized in that it comprises two longitudinal reinforcing elements (8, 18, 28, 38, 48) extending at least in the central part of the ski, arranged on either side of the core (2, 22 , 32, 42), in contact with both the latter and the parts of the inner surface of the shell (3) forming the lateral faces of the ski, each reinforcement element comprising a lower face extending largely over the width of the corresponding edge (6), so as to provide it with effective support, and extending over at least part of the height of the ski. Ski selon la revendication 1, caractérisé en ce que chaque élément de renforcement (8) formant longeron s'étend sur pratiquement toute la hauteur du ski et sert au support de la face supérieure (4) de la coque (3).Ski according to claim 1, characterized in that each reinforcing element (8) forming a spar extends over practically the entire height of the ski and serves to support the upper face (4) of the hull (3). Ski selon la revendication 1, caractérisé en ce que chaque élément de renforcement (18) s'étend sur une partie seulement de la hauteur du ski, et est solidaire d'un élément de renfort (19) en contact avec la paroi supérieure (14) de la coque, dans le but de reprendre les efforts.Ski according to claim 1, characterized in that each reinforcing element (18) extends over only part of the height of the ski, and is integral with a reinforcing element (19) in contact with the upper wall (14 ) of the hull, in order to take up the efforts. Ski selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque élément de renforcement (8) possède une face, destinée à prendre appui contre le noyau (2), qui est perpendiculaire au plan de la semelle.Ski according to any one of claims 1 to 3, characterized in that each reinforcing element (8) has a face, intended to bear against the core (2), which is perpendicular to the plane of the sole. Ski selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque élément de renforcement (28) possède une face, destinée à prendre appui contre le noyau (22), qui est incliné par rapport à la perpendiculaire au plan de la semelle.Ski according to any one of claims 1 to 3, characterized in that each reinforcing element (28) has a face, intended to bear against the core (22), which is inclined relative to the perpendicular to the plane of the sole. Ski selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la largeur de la base de chaque élément de renforcement (48), c'est-à-dire de la face de celui-ci tournée du côté de la semelle, est constante sur toute la longueur du ski, tandis que la largeur du noyau (42) est variable sur toute la longueur du ski.Ski according to any one of Claims 1 to 5, characterized in that the width of the base of each reinforcement element (48), that is to say of the face of the latter turned towards the side of the sole , is constant over the entire length of the ski, while the width of the core (42) is variable over the entire length of the ski. Ski selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la largeur de la base de chaque élément de renforcement (38), c'est-à-dire de la face de celui-ci tournée du côté de la semelle, est variable en fonction de sa position longitudinale sur le ski, la largeur du noyau (32) étant constante sur toute la longueur du ski.Ski according to any one of Claims 1 to 5, characterized in that the width of the base of each reinforcement element (38), that is to say of the face of the latter turned towards the side of the sole , is variable as a function of its longitudinal position on the ski, the width of the core (32) being constant over the entire length of the ski. Ski selon l'une quelconque des revendications 1 à 7, caractérisé en ce que chaque élément de renforcement (48) est réalisé en plusieurs parties (48a, 48b, 48c) aboutées dans le sens longitudinal, et réalisées en des matériaux possédant des caractéristiques différentes.Ski according to any one of Claims 1 to 7, characterized in that each reinforcing element (48) is produced in several parts (48a, 48b, 48c) butted in the longitudinal direction, and produced from materials having different characteristics . Ski selon l'une quelconque des revendications 1 à 7, caractérisé en ce que chaque élément de renforcement (38) est réalisé en plusieurs parties (38a, 38b) juxtaposées et réalisées en des matériaux possédant des caractéristiques différentes.Ski according to any one of claims 1 to 7, characterized in that each reinforcing element (38) is produced in several parts (38a, 38b) juxtaposed and produced from materials having different characteristics. Ski selon l'une quelconque des revendications 1 à 9, caractérisé en ce que chaque élément de renforcement (48) comprend une partie centrale (48a) rigide située dans la zone de patin, et deux parties d'extrémités (48b, 48c) réalisées en un matériau viscoélastique.Ski according to any one of Claims 1 to 9, characterized in that each reinforcing element (48) comprises a rigid central part (48a) situated in the skid zone, and two end parts (48b, 48c) made made of a viscoelastic material. Ski selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la partie rigide de chaque élément de renforcement (8) est réalisée à partir de tissu imprégné de résine, et replié sur lui-même.Ski according to any one of claims 1 to 10, characterized in that the rigid part of each reinforcing element (8) is made from fabric impregnated with resin, and folded back on itself. Ski selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la partie rigide de chaque élément de renforcement (8) est réalisée en un complexe multimatériaux, tel que Zicral-ABS, Zicral étant une marque déposée pour un alliage d'aluminium, et l'ABS étant l'acrylonitrile-butadiène-styrène.Ski according to any one of claims 1 to 10, characterized in that the rigid part of each reinforcing element (8) is made of a multimaterial complex, such as Zicral-ABS, Zicral being a registered trademark for an aluminum alloy, and ABS being acrylonitrile-butadiene-styrene. Ski selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les deux éléments de renforcement opposés (8) d'un même ski possèdent des caractéristiques différentes de rigidité et d'amortissement.Ski according to any one of claims 1 to 12, characterized in that the two opposite reinforcing elements (8) of the same ski have different characteristics of rigidity and damping. Ski selon l'une quelconque des revendications 1 à 13, caractérisé en ce que les deux éléments de renforcement opposés (8) d'un même ski possèdent des caractéristiques géométriques différentes, telles que largeur et/ou hauteur différentes.Ski according to any one of claims 1 to 13, characterized in that the two opposite reinforcing elements (8) of the same ski have different geometric characteristics, such as different width and / or height. Ski selon l'une quelconque des revendications 1 à 14, caractérisé en ce que les éléments de renforcement s'étendent sur toute la longueur active du ski, c'est-à-dire sensiblement entre les zones de contact avant et arrière du ski sur la neige, tandis que la coque recouvre entièrement les éléments de renforcement.Ski according to any one of claims 1 to 14, characterized in that the reinforcing elements extend over the entire active length of the ski, that is to say substantially between the front and rear contact zones of the ski on snow, while the hull completely covers the reinforcing elements. Ski selon l'une quelconque des revendications 1 à 15, caractérisé en ce qu'un joint en matériau viscoélastique (9) est interposé localement dans les zones d'extrémité du ski entre la coque (3) et la partie supérieure de chaque élément de renforcement (8).Ski according to any one of claims 1 to 15, characterized in that a seal made of viscoelastic material (9) is interposed locally in the end regions of the ski between the shell (3) and the upper part of each element of reinforcement (8). Ski selon l'une quelconque des revendications 1 à 16, caractérisé en ce que le noyau (2) est réalisé indépendamment, puis assemblé aux éléments de renforcement et à la coque.Ski according to any one of claims 1 to 16, characterized in that the core (2) is produced independently, then assembled with the reinforcing elements and the hull. Ski selon l'une quelconque des revendications 1 à 16, caractérisé en ce que les éléments de renforcement (8) sont tout d'abord assemblés à la coque (3) ou extrudés avec la coque, après quoi le noyau (2) est injecté in situ.Ski according to any one of claims 1 to 16, characterized in that the reinforcing elements (8) are first assembled to the hull (3) or extruded with the hull, after which the core (2) is injected in situ.
EP92420416A 1991-11-19 1992-11-16 Ski with a non-rectangular cross-section Expired - Lifetime EP0543744B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9114749 1991-11-19
FR9114749A FR2683733B1 (en) 1991-11-19 1991-11-19 SKI IN SHAPE, NON-RECTANGULAR SECTION.

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EP0543744A1 true EP0543744A1 (en) 1993-05-26
EP0543744B1 EP0543744B1 (en) 1995-02-01

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EP (1) EP0543744B1 (en)
JP (1) JP2599867Y2 (en)
AT (1) ATE117902T1 (en)
DE (1) DE69201341T2 (en)
FR (1) FR2683733B1 (en)

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FR2696944A1 (en) * 1992-07-16 1994-04-22 Rohrmoser Alois Skifabrik Ski comprising an integrated upper chord in particular in a hull and method of manufacturing the ski.
FR2703917A1 (en) * 1993-04-16 1994-10-21 Rossignol Sa Ski, the topsheet (upper wall) and sidewalls of which are composed of a shell
FR2725912A1 (en) * 1994-10-20 1996-04-26 Rossignol Sa Ski with reinforced longitudinal edges
FR2781384A1 (en) * 1998-07-21 2000-01-28 Rossignol Sa Alpine competition ski has reinforced edges in sections made from materials with different Young's modulus meeting in line with boot toe clamp

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US6446984B2 (en) 1998-11-24 2002-09-10 K-2 Corporation Foam core skate frame with embedded insert
US20020011712A1 (en) * 1998-11-24 2002-01-31 K2 Corporation Skate frame with cap construction
US6502850B1 (en) * 1999-10-12 2003-01-07 The Burton Corporation Core for a gliding board
AT411734B (en) * 1999-12-22 2004-05-25 Atomic Austria Gmbh BOARD-LIKE SLIDER, ESPECIALLY SKI OR SNOWBOARD
FR2808698B1 (en) * 2000-05-10 2002-10-11 Salomon Sa SKI PLANNED FOR THE PRACTICE OF ALPINE SKIING
CA2387005A1 (en) 2000-08-16 2002-02-21 K-2 Corporation Snowboard with partial sidewall
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FR2820981B1 (en) * 2001-02-22 2003-03-28 Rossignol Sa PROCESS FOR PRODUCING A SNOW SLIDING BOARD, REINFORCEMENT AND SNOW SLIDING BOARD COMPRISING SUCH REINFORCEMENT
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FR2696944A1 (en) * 1992-07-16 1994-04-22 Rohrmoser Alois Skifabrik Ski comprising an integrated upper chord in particular in a hull and method of manufacturing the ski.
FR2703917A1 (en) * 1993-04-16 1994-10-21 Rossignol Sa Ski, the topsheet (upper wall) and sidewalls of which are composed of a shell
FR2725912A1 (en) * 1994-10-20 1996-04-26 Rossignol Sa Ski with reinforced longitudinal edges
FR2781384A1 (en) * 1998-07-21 2000-01-28 Rossignol Sa Alpine competition ski has reinforced edges in sections made from materials with different Young's modulus meeting in line with boot toe clamp

Also Published As

Publication number Publication date
ATE117902T1 (en) 1995-02-15
JPH0558175U (en) 1993-08-03
DE69201341D1 (en) 1995-03-16
FR2683733B1 (en) 1994-03-18
JP2599867Y2 (en) 1999-09-20
EP0543744B1 (en) 1995-02-01
US5599036A (en) 1997-02-04
FR2683733A1 (en) 1993-05-21
DE69201341T2 (en) 1995-05-24

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