EP2921210B1 - Snowboard and method for manufacturing same - Google Patents

Snowboard and method for manufacturing same Download PDF

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Publication number
EP2921210B1
EP2921210B1 EP15000805.0A EP15000805A EP2921210B1 EP 2921210 B1 EP2921210 B1 EP 2921210B1 EP 15000805 A EP15000805 A EP 15000805A EP 2921210 B1 EP2921210 B1 EP 2921210B1
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EP
European Patent Office
Prior art keywords
insert
core
ski
reinforcement
sliding board
Prior art date
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EP15000805.0A
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German (de)
French (fr)
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EP2921210A1 (en
Inventor
Bertrand Krafft
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Salomon SAS
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Salomon SAS
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Publication date
Priority claimed from FR1400674A external-priority patent/FR3018697B1/en
Priority claimed from FR1400673A external-priority patent/FR3018696B1/en
Application filed by Salomon SAS filed Critical Salomon SAS
Publication of EP2921210A1 publication Critical patent/EP2921210A1/en
Application granted granted Critical
Publication of EP2921210B1 publication Critical patent/EP2921210B1/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
    • A63C5/052—Structure of the surface thereof of the tips or rear ends

Definitions

  • the present invention relates to a gliding board whose end is shaped like a spatula, such as a ski or a surf, and a method of manufacturing such a gliding board.
  • a spatula refers to the front end of a gliding board, which is slightly raised to prevent the ski from crashing in the snow, or being deflected by the terrain.
  • a ski comprising a spatula at the front, a heel at the rear and a central part, also called body, the spatula and the heel being thinner than the body of the board.
  • This allows to lighten the entire ski without weakening it.
  • the weight of the user based essentially on the central part of the ski is the part of the ski that undergoes the most mechanical efforts.
  • the spatula's main role is to chase the snow and facilitate turns. It therefore supports less effort than the body of the ski.
  • the spatulas having the same structure as the body of the ski they remain relatively heavy, which is troublesome especially in the case of a ski touring, because the user is required to frequently lift the skis to climb a slope.
  • vibrations in the spatula can destabilize the entire ski.
  • Another common problem is that the front and rear ends are more exposed than other parts of the ski.
  • the rear end is constantly resting on the ground when the user walks, ski in hand, and it uses it in the manner of a walking stick.
  • the front spatula is brought to come into contact with obstacles that may damage it during gliding phases or outside of them (storage, transport, handling, etc.). It is these drawbacks that the invention intends to remedy more particularly by proposing a new gliding board whose spatula is lighter and more flexible than the spatulas of known gliding boards.
  • the invention particularly aims to achieve a gliding board whose front and / or rear ends are less fragile and better withstand all kinds of solicitations during the actual sliding phases, but also outside thereof.
  • the invention relates to a gliding board, having a rear end, a front end shaped spatula and which comprises a multilayer structure including: a core, an upper reinforcement, a lower reinforcement; a coating layer disposed above the upper reinforcement, a sliding sole disposed below the lower reinforcement, and further comprising an end insert at least partially between the upper and lower reinforcements, which extends the core to one from its ends, so that one of the following two elements: coating layer and gliding sole does not completely cover said end insert.
  • the spatula whose insert is the core can be lighter than an ordinary spatula, which reduces the total weight of the gliding board and make it more manageable.
  • the insert provides flexibility to the spatula so that it better dampens vibration, especially in bends, such a spatula thus increasing the stability of the gliding board.
  • the ski touring 2 represented on the Figures 1 to 4 is intended to be placed on the surface of the ground S which, by hypothesis, is assumed flat and horizontal. For the sake of clarity, the surface S is represented only on the figure 2 .
  • the longitudinal axis X2 of the ski 2 is parallel to the surface S.
  • the part of the ski 2 to the left of the axis X2 from the point of view of the skier is the left side.
  • Y2 denotes an axis perpendicular to the axis X2 and also parallel to the surface S. Finally, we denote Z2 a perpendicular axis and sequent with the axes X2 and Y2.
  • L2 is the length of the ski 2, measured between its front end 21 and its rear end 22 along the axis X2.
  • the ski 2 has a slightly parabolic shape and its front portion 4, called spatula, is raised relative to the surface S. In use, the ski 2 abuts against the surface S at the rear of the spatula 4.
  • a line segment 41 from which the lower surface of the ski ceases to be in contact with the surface S, defines the rear end of the spatula 4. Since the ski is symmetrical about the axis X2, the line segment 41 is parallel to the axis Y2.
  • the front end of the spatula is the front end 21 of the ski.
  • the spatula therefore has a length L4 measured between the segment 41 and the end 21 between 100 and 600 mm, while the length L2 is between 1200 and 2000 mm.
  • the ski 2 has a multilayer structure and comprises a core 23, covered by upper layers 26 and resting on lower layers 27.
  • the upper layers 26 and lower 27 completely cover the core 23.
  • the upper layers 26 covering the core 23 are composed, from top to bottom, of a coating layer 262, an upper reinforcement 263, a first aluminum layer 264, and an upper intermediate layer 266. It should be noted that the aluminum layer 264 and the upper intermediate layer functionally constitute additional reinforcements.
  • the lower layers, on which the core 23 rests, are composed, from bottom to top, of a sole 272, a lower intermediate layer 276, a second aluminum layer 274, as well as a lower reinforcement 273, and incorporate edges 271 deposited around the sole 272.
  • the spatula 4 comprises, on its front end portion, an insert 42 implanted between the upper reinforcements 263 and lower 273 and which extends the core 23 of the ski 2 forward.
  • the upper reinforcements 263 and lower 273 extend forward of the ski beyond the core 23 and the layers 262, 264, 266, 272, 274, 276, to an edge 421 of the insert 42 opposite the core 23.
  • the reinforcements 263 and 273 completely cover the insert 42.
  • the insert is not covered by the other upper layers 262, 264 and 266 and lower 272, 274 and 276.
  • the insert is maintained in places only between the upper reinforcements 263 and lower 273.
  • the front limit of the coating layer 262 is noted 24.
  • This limit 24 has, in plan view, an ellipse section centered on the axis X2, as visible in FIG. figure 1 .
  • the coating layer 262 which covers the layers 264 and 266, is the only one visible on the figure 1 .
  • the front end of the spatula, which is also the front end 21 of the ski 2 has a rounded shape.
  • L424 the length of the insert 42 measured between, on the one hand, the intersection of the front limit 24 with a lateral edge of the ski and, on the other hand, the front end of the ski 21 at the level of the X2 axis.
  • L423 the length of the insert 42 measured along its axis of symmetry X2. The length L424 is between 20 and 200 mm, while the length L423 is between 10 and 100 mm.
  • the implantation of the insert 42 in the axial extension of the core 23 towards the front is visible on the figures 2 and 3 .
  • the front edge 231 of the core 23 comes into contact with the rear edge 422 of the insert 42, these edges 231 and 422 being complementary. More specifically, the edge 231 is convex and edge 422 is concave and receives surface support 231 edge.
  • the insert 42 is a core for the front portion of the spatula 4 and extends the core 23 forward, beyond its edge 231, being reinforced and mechanically protected by the reinforcements 263 and 273.
  • edges 231 and 422 are substantially aligned along the axis Z2 with the boundary 24.
  • H1 is the height of the point P1 relative to the surface S on which the ski 2 rests, this height being measured parallel to the axis Z2.
  • H4 the maximum height of the spatula measured at the upper end of the upper reinforcement 263 relative to the surface of the ground S.
  • the height H2 is measured at a point P'1 located halfway up the edges 231 and 422, parallel to the axis Z2 and with respect to the surface S.
  • the height H1 is between 10 and 50 mm, while the height H4 is between 40 and 70 mm and the height H2 is between 0 and 30 mm.
  • the lower reinforcement 273 comes into direct contact with the core 23 and the insert 42 without any layer being interposed between them.
  • layers of aluminum 264 and intermediate 266 are interposed between the core 23 and the upper reinforcement 263.
  • the thickness of the core 23 and e42 the thickness of the insert 42.
  • the core 23 and the insert 42 are of constant thickness.
  • the thickness e23 is equal to the thickness e42, preferably with a value of between 1 and 4 mm.
  • the insert comprises at its front end an extra thickness forming a bead 48.
  • This bead 48 has a width 48 of the order of a few millimeters and a thickness E48 of the order of 1 mm. It follows the edge of the spatula 4. This bead is created in the mold by creep of the material of the insert.
  • the covering layer 262 forms an edge 241 at its boundary 24 with the upper reinforcement 263 from which a thickness decreases towards the front.
  • the coating layer 262 has a refined shape to optimize the aerodynamics of the ski 2.
  • the core 23 is made of a dense material allowing it to withstand the weight of the skier.
  • the insert 42 for its part, is made of synthetic material, in particular polyurethane. In practice, the material constituting the insert 42 is more flexible and stronger than that of the core 23. As a result, it is not necessary to protect the insert with the additional coating layer and reinforcement layers. Thus, the spatula 4 is lighter and more flexible than when the same multilayer structure of the ski extends over its entire length and in particular to the edge 21. The relative flexibility and strength of the insert makes it play the role of a bumper for the front end of the ski.
  • the upper reinforcements 263 and lower 273, but also the intermediate layers, may comprise fibers, in particular glass, carbon, vegetable, kevlar. Reinforcements may also be metal.
  • the figure 4 illustrates how the different constituent layers of the ski 2 are arranged relative to each other.
  • This multilayer structure is obtained by molding.
  • the sole 272 and the edges are arranged at the bottom of a mold, then the intermediate layers 276 and aluminum 274 are placed on top.
  • the reinforcement 273 is placed in the mold above the layers 272, 274 and 276.
  • the core 23 and the insert 42 are placed on the reinforcement 273, aligning them in the direction of the axis X2.
  • the edges 231 and 422 are brought into contact.
  • the intermediate layers 266 and aluminum 264 then cover the core 23 and the insert 42, before being themselves covered by the upper reinforcement 263.
  • the coating layer 262 is then affixed to the assembly formed during the previous steps.
  • the insert 42 is provided at its rear end and on its outer edges, two overhangs or surplus material 426, projecting on the outside of the board. These overhangs 426 make it possible, inter alia, to maintain the insert 42 in position, with respect to the core 23, during molding.
  • a resin such as an epoxy resin, impregnating at least some of the pieces in place in the mold.
  • This resin by solidifying, solidarises the pieces and ensures the rigidity of the ski.
  • insert 42 is longer and is implanted deeper into the structure of the ski.
  • the aluminum coating layers 262, 264, 274, intermediate 266, 276 and the sole 272 do not extend beyond the core 23.
  • the insert 42 is then held only between upper reinforcements 263 and lower 273.
  • the core 23 is shorter, and the insert 42 longer, so that the insert 42 is partially covered by the upper layers 262, 264 and 266 and lower 272, 274 and 276.
  • the insert 42 is completely covered by the reinforcements 263 and 273.
  • the spatula obtained is more solid, the risk of breakage of the spatula are reduced because the insert 42, maintained between the all layers 262, 263, 264, 266, 272, 273, 274 and 276 constituting the structure of the ski 2, is less likely to detach.
  • the insert 42 is implanted between the upper layers 262, 263, 264 and 266 and lower 272, 273, 274 and 276 as in the second embodiment.
  • the edges 422 and 231 of the core 23 and the insert 42 are staggered so as to constitute each a rabbet. So, the core 23 and the insert 42 partially overlap, and the core 23 partially covers the insert 42. It is therefore better implanted in the structure of the ski, and has less chance to dissociate from the rest of the ski 2, which limits the risk of breakage of the spatula 4.
  • the core 23 has a longitudinal slot 28 along the axis X2 and which opens on the front.
  • the insert 42 is implanted in this notch and on the front of the core.
  • the layers of sole 272, fibers 276 and 266, aluminum 274 and 264 and coating 262 also have a notch opening on the front and substantially of the same dimensions as the notch 28 cut in the core 23.
  • the upper reinforcements 263 and lower 273 completely cover the insert 42.
  • the latter, as well as the reinforcements 263 and 273, are each pierced with a slot 44 oriented along the longitudinal axis X2 to the ski. This slot ends at its front end by a circular orifice 46 opening.
  • L28 the length of the notch 28 measured between its rear end 282 and its front end 281 along the longitudinal axis of the ski X2.
  • the notch is symmetrical along the axis X2.
  • the width 28 of the notch 28 measured along the axis Y2.
  • the width l 28 is increasing along the axis X 2 going from the rear end 282 to the front end 281, such that part of the notch at the front is wider than part of the notch located further back.
  • the length L28 is between 50 and 250 mm, while the width l 28 is between 5 and 30 mm.
  • the distance between the rear end of the slot 242 and the front end 21 of the ski measured along the axis X2 is noted d44.
  • D46 is the diameter of the circular orifice D46 and d46 the distance between its center C46 and the front end 21 of the ski 2, measured along the axis X2.
  • the distance d44 between 100 and 250 mm and width 44 of the slot 44 is between 3 and 8 mm preferably constant according to the X2 axis and equal to 5 mm.
  • the diameter D46 of the circular orifice is between 10 and 30 mm and the center C46 of the orifice is at a distance d46 between 20 and 50 mm from the end 21 of the ski 2.
  • the cut notch in the core and in the layers 262, 264, 266, 272, 274 and 276 divides the spatula into two parts, called right finger 50 and left finger 51.
  • the right finger 50 designates a part of the spatula 4 located right of the notch 28, while the left finger 51 designates a portion of the spatula 4 to the left of the notch 28.
  • the fingers 50 and 51 Since the insert 42 is made from a softer material than that constituting the core, the fingers 50 and 51 have the ability to flex independently of one another. Thus, the spatula 4 can deform to adapt to the slope of the slope. In a case of use of the ski 2 where it is arranged perpendicular to the direction of the slope, the two fingers 50 and 51 are slightly offset relative to each other, with the finger upstream side slightly raised relative to the finger downstream side. This elastic deformation of the spatula thus increases the grip and stability of the ski, and therefore the comfort of the user.
  • the Figures 10 to 13 describe a fifth embodiment in which the insert is placed at the rear end of the gliding board.
  • the ski 2 consists of three parts, a heel 84 forming the rear end of the ski, a body 6 and a spatula 8 forming its front end.
  • the ski 2 has a slightly parabolic shape, that is to say that the body 6 is wider at its junctions with the heel 84 and the spatula 8 in its center.
  • the ski 2 has a multilayer structure as illustrated on the figures 11 and 13 .
  • a core layer constituting the core of the ski, also called core 23, is disposed on a lower multilayer structure 27 and covered with an upper multilayer structure 26.
  • the upper multilayer structure 26 is composed, from top to bottom, of a coating layer 262, an upper reinforcement 263, an aluminum layer 264 and an intermediate layer 266.
  • the lower multilayer structure 27 is composed from top to bottom of a lower reinforcement 273, a layer aluminum 274, an intermediate layer 276, a sole 272 and integrates edges 271, deposited around the sole 272.
  • the heel 84 comprises, on its rear end portion, an insert 42 implanted between the upper intermediate layer 266 and the lower reinforcement 273 and which extends the core 23 of the ski 2 towards the rear.
  • the upper reinforcements 263 and lower 273 may comprise fibers, in particular carbon or Kevlar, or be made of metal, aluminum for example.
  • the insert 42 is made of a material of greater rigidity and / or greater hardness than the material constituting the core 23.
  • the core may be known in wood or foam, while the insert 42 may for example consist of one or more thermoplastics. In particular, good results are obtained by producing the thermoplastic polyurethane insert.
  • the covering layer 262 is evenly distributed and has an upper surface 267, parallel to the axes X2 and Y2 and a chamfered edge 268.
  • the edge 268 forms an edge 269 with the surface 267.
  • L4 is the length of the heel 84 measured, along the axis X2, between the rear end 22 of the ski 2 and the straight line 421.
  • the lengths L2 and L4 are respectively between 1200 and 2000 mm and between 50 and 150 mm.
  • the width of the bead is noted 84.
  • the width l 4 of the heel 84 is decreasing along the X2 axis, going backward. In other words, the width l 4 of the heel 84 is necessarily smaller than the width of the ski measured at the level of the line 421 or the body 6.
  • the heel 84 has a generally trapezoidal outer shape, and its rear corners 43 are rounded.
  • the layers of coating 262, aluminum 264 and intermediate 266, form a band 844, generally trapezoidal, extending from the front of the heel 4 to the rear end 22 of the ski 2. This band 844 does not extend to the right 50 and left 51 side edges of the heel.
  • the strip 844 leaves, on either side of the axis X2, two fins 45 and 47 of the insert 42 not covered by the coating layers 262, aluminum 264 and intermediate layers 266. These fins 45 and 47 are on the other hand covered by the upper reinforcement 263.
  • the coating layer 262 covering the layers 264 and 266, is the only one visible on the figures 1 and 3 , apart from the reinforcement 263.
  • the sole 272, aluminum 274 and intermediate 276 layers form a strip 846 extending from the front of the heel 84 to the rear end of the ski.
  • This band 846 leaves the two fins 45 and 47 of the insert 42 uncovered by the lower layers 272, 274 and 276.
  • the fins 45 and 47 are covered on the underside by the lower reinforcement 273.
  • the sole 272 covers the layers 274. and 276.
  • the portion of the layers 262, 264 and 266 lying at the heel 84 is marked 2624, 2644 and 2664 respectively.
  • 2634 is the rear portion of the reinforcement 263 at the heel 84, this portion being wider than the portions 2624, 2644, 2664.
  • the strips 844 and 846 are substantially of the same size and superimposed along the axis Z2.
  • the strips 844 and 846 being symmetrical along the axis X2, the fins 45 and 47 are also symmetrical along the axis X2 and of substantially the same dimensions.
  • the invention has been described above when it is implemented with a ski touring. It is also applicable with other types of board, including other types of skiing, or surfing.

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Description

La présente invention concerne une planche de glisse dont l'extrémité est conformée en spatule, telle qu'un ski ou un surf, ainsi qu'une méthode de fabrication d'une telle planche de glisse. Le terme spatule désigne l'extrémité avant d'une planche de glisse, qui est légèrement relevée afin d'éviter que le ski ne se plante dans la neige, ou ne soit dévié par le relief.The present invention relates to a gliding board whose end is shaped like a spatula, such as a ski or a surf, and a method of manufacturing such a gliding board. The term spatula refers to the front end of a gliding board, which is slightly raised to prevent the ski from crashing in the snow, or being deflected by the terrain.

Dans le domaine des sports d'hiver, il est connu de fabriquer un ski comprenant une spatule à l'avant, un talon à l'arrière et une partie centrale, aussi appelée corps, la spatule et le talon étant moins épais que le corps de la planche. Ceci permet d'alléger l'ensemble du ski sans le fragiliser. En effet, le poids de l'utilisateur reposant essentiellement sur la partie centrale du ski, c'est cette partie du ski qui subit le plus d'efforts mécaniques. La spatule a pour rôle principal de chasser la neige et de faciliter les virages. Elle supporte donc moins d'efforts que le corps du ski. Cependant, les spatules ayant la même structure que le corps du ski, elles restent relativement lourdes, ce qui est gênant en particulier dans le cas d'un ski de randonnée, car l'utilisateur est amené à soulever fréquemment les skis afin de gravir une pente. Par ailleurs, à grande vitesse, et plus particulièrement dans les virages, les vibrations dans la spatule peuvent déstabiliser l'ensemble du ski.In the field of winter sports, it is known to manufacture a ski comprising a spatula at the front, a heel at the rear and a central part, also called body, the spatula and the heel being thinner than the body of the board. This allows to lighten the entire ski without weakening it. Indeed, the weight of the user based essentially on the central part of the ski is the part of the ski that undergoes the most mechanical efforts. The spatula's main role is to chase the snow and facilitate turns. It therefore supports less effort than the body of the ski. However, the spatulas having the same structure as the body of the ski, they remain relatively heavy, which is troublesome especially in the case of a ski touring, because the user is required to frequently lift the skis to climb a slope. Moreover, at high speed, and more particularly in turns, vibrations in the spatula can destabilize the entire ski.

Le document EP 1 902 758 décrit un ski dont les extrémités sont rendues moins rigides. Cet effet est obtenu par la mise en place d'un insert qui se substitue au noyau dans une cavité ménagée à son extrémité. Cette construction change le comportement du ski mais modifie peu ou pas du tout le poids ou la solidité des extrémités.The document EP 1,902,758 describes a ski whose ends are made less rigid. This effect is obtained by placing an insert that replaces the core in a cavity at its end. This construction changes the behavior of the ski but modifies little or no weight or strength of the ends.

Un autre problème fréquent est lié au fait que les extrémités avant et arrière sont plus exposées que les autres parties du ski. Par exemple l'extrémité arrière est sans arrêt posée sur le sol lorsque l'utilisateur marche, ski à la main, et qu'il s'en sert à la manière d'un bâton de marche. De même, la spatule avant est amenée à venir au contact d'obstacles qui peuvent l'endommager que ce soit lors des phases de glisse ou encore en dehors de celles-ci (stockage, transport, manipulation, etc). C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant une nouvelle planche de glisse dont la spatule est plus légère et plus souple que les spatules des planches de glisse connues.Another common problem is that the front and rear ends are more exposed than other parts of the ski. For example the rear end is constantly resting on the ground when the user walks, ski in hand, and it uses it in the manner of a walking stick. Similarly, the front spatula is brought to come into contact with obstacles that may damage it during gliding phases or outside of them (storage, transport, handling, etc.). It is these drawbacks that the invention intends to remedy more particularly by proposing a new gliding board whose spatula is lighter and more flexible than the spatulas of known gliding boards.

L'invention a notamment pour objectif la réalisation d'une planche de glisse dont les extrémités avant et/ou arrière sont moins fragiles et résistent mieux à toutes sortes de sollicitations pendant les phases effectives de glisse, mais également en dehors de celles-ci.The invention particularly aims to achieve a gliding board whose front and / or rear ends are less fragile and better withstand all kinds of solicitations during the actual sliding phases, but also outside thereof.

A cet effet, l'invention concerne une planche de glisse, ayant une extrémité arrière, une extrémité avant conformée en spatule et qui comprend une structure multicouche incluant: un noyau, un renfort supérieur, un renfort inférieur; une couche de revêtement disposée au dessus du renfort supérieur, une semelle de glisse disposée au dessous du renfort inférieur, et comprenant en outre un insert d'extrémité placé au moins partiellement entre les renforts supérieur et inférieur, qui prolonge le noyau à l'une de ses extrémités, de telle façon que l'un des deux éléments suivants: couche de revêtement et semelle de glisse ne recouvre pas entièrement ledit insert d'extrémité.To this end, the invention relates to a gliding board, having a rear end, a front end shaped spatula and which comprises a multilayer structure including: a core, an upper reinforcement, a lower reinforcement; a coating layer disposed above the upper reinforcement, a sliding sole disposed below the lower reinforcement, and further comprising an end insert at least partially between the upper and lower reinforcements, which extends the core to one from its ends, so that one of the following two elements: coating layer and gliding sole does not completely cover said end insert.

Grâce à l'invention, la spatule dont l'insert constitue l'âme peut être plus légère qu'une spatule ordinaire, ce qui permet de réduire le poids total de la planche de glisse et de la rendre plus maniable. De plus, l'insert donne de la souplesse à la spatule de manière à ce que celle-ci amortisse mieux les vibrations, en particulier dans les virages, une telle spatule augmentant ainsi la stabilité de la planche de glisse.Thanks to the invention, the spatula whose insert is the core can be lighter than an ordinary spatula, which reduces the total weight of the gliding board and make it more manageable. In addition, the insert provides flexibility to the spatula so that it better dampens vibration, especially in bends, such a spatula thus increasing the stability of the gliding board.

Selon des aspects avantageux mais non obligatoires de l'invention, une telle planche de glisse peut incorporer une ou plusieurs des caractéristiques techniques suivantes, prises dans toute combinaison techniquement admissible :

  • Les renforts supĂ©rieur et infĂ©rieur s'Ă©tendent Ă  partir du noyau jusqu'Ă  un bord de l'insert opposĂ© au noyau.
  • L'insert est intĂ©gralement recouvert par les renforts supĂ©rieur et infĂ©rieur.
  • L'insert est rĂ©alisĂ© en un matĂ©riau plus souple et/ou plus rĂ©sistant que celui constituant le noyau, notamment en polyurĂ©thane.
  • La structure multicouche comprend au moins une autre couche supĂ©rieure ou infĂ©rieure qui recouvre le noyau mais ne recouvre pas, ou pas intĂ©gralement, l'insert.
  • Le noyau et l'insert sont disposĂ©s bout Ă  bout entre les renforts supĂ©rieur et infĂ©rieur.
  • Le noyau et l'insert se chevauchent entre les renforts supĂ©rieur et infĂ©rieur.
  • L'insert est placĂ© Ă  l'extrĂ©mitĂ© avant de la planche et en constitue la spatule relevĂ©e.
  • L'insert est placĂ© Ă  l'extrĂ©mitĂ© arrière de la planche de glisse et en constitue le talon.
  • La structure multicouche comprend, au dessus du noyau et en plus du renfort supĂ©rieur, au moins une deuxième couche supĂ©rieure et, au dessous du noyau et en plus du renfort infĂ©rieur, au moins une deuxième couche infĂ©rieure, alors que la deuxième couche supĂ©rieure est intercalĂ©e, en hauteur, entre le noyau et le renfort supĂ©rieur et que le renfort infĂ©rieur est en contact avec le noyau, sans interposition de la deuxième couche infĂ©rieure.
  • Le noyau comporte une encoche longitudinale dĂ©bouchant sur l'avant et l'insert s'Ă©tend partiellement dans l'encoche.
  • L'insert comporte une fente orientĂ©e le long d'un axe longitudinal de la planche de glisse.
According to advantageous but non-compulsory aspects of the invention, such a gliding board may incorporate one or more of the following technical characteristics, taken in any technically permissible combination:
  • The upper and lower reinforcements extend from the core to an edge of the insert opposite the core.
  • The insert is completely covered by the upper and lower reinforcements.
  • The insert is made of a softer material and / or more resistant than that constituting the core, especially polyurethane.
  • The multilayer structure comprises at least one other upper or lower layer which covers the core but does not overlap, or not integrally, the insert.
  • The core and the insert are arranged end to end between the upper and lower reinforcements.
  • The core and the insert overlap between the upper and lower reinforcements.
  • The insert is placed at the front end of the board and is the raised spatula.
  • The insert is placed at the rear end of the gliding board and constitutes the heel.
  • The multilayer structure comprises, above the core and in addition to the upper reinforcement, at least a second upper layer and, below the core and in addition to the lower reinforcement, at least a second lower layer, while the second upper layer is interposed , in height, between the core and the upper reinforcement and that the lower reinforcement is in contact with the core, without interposition of the second lower layer.
  • The core has a longitudinal notch opening on the front and the insert extends partially in the notch.
  • The insert has a slot oriented along a longitudinal axis of the gliding board.

L'invention concerne également une méthode de fabrication d'une planche de glisse telle que mentionnée ci-dessus. Conformément à l'invention, cette méthode comprend des étapes successives consistant à :

  • a) disposer, dans un moule, le renfort infĂ©rieur ;
  • b) disposer, dans le moule et au-dessus du renfort infĂ©rieur, le noyau et l'insert en les alignant selon une direction longitudinale ;
  • c) disposer, dans le moule et au-dessus du noyau et de l'insert, le renfort supĂ©rieur ;
  • d) Ă©lever la tempĂ©rature des pièces disposĂ©es dans le moule pour faire fondre une rĂ©sine imprĂ©gnant au moins certaines de ces pièces.
The invention also relates to a method of manufacturing a gliding board as mentioned above. According to the invention, this method comprises successive steps consisting in:
  • a) arranging, in a mold, the lower reinforcement;
  • b) arranging, in the mold and above the lower reinforcement, the core and the insert by aligning them in a longitudinal direction;
  • c) have, in the mold and above the core and the insert, the upper reinforcement;
  • d) raising the temperature of the parts arranged in the mold to melt a resin impregnating at least some of these parts.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'une planche de glisse conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de dessus d'un ski conforme Ă  un premier mode de rĂ©alisation de l'invention ;
  • la figure 2 est une vue de cĂ´tĂ© du ski de la figure 1 ;
  • la figure 3 est une coupe partielle selon le plan III-III Ă  la figure 1 et Ă  plus grande Ă©chelle, correspondant au dĂ©tail III Ă  la figure 2 ;
  • la figure 4 est une vue en perspective Ă©clatĂ©e du ski des figures 1 Ă  3 ;
  • la figure 5 est une coupe analogue Ă  la figure 3 pour un ski conforme Ă  un deuxième mode de rĂ©alisation de l'invention ;
  • la figure 6 est une coupe analogue Ă  la figure 3 pour un ski conforme Ă  un troisième mode de rĂ©alisation de l'invention ;
  • la figure 7 est une vue de dessus d'un ski conforme Ă  un quatrième mode de rĂ©alisation de l'invention ;
  • la figure 8 est une vue Ă  plus grande Ă©chelle du dĂ©tail VIII Ă  la figure 7 ;
  • la figure 9 est une vue analogue Ă  la figure 4 pour le ski des figures 7 et 8 ;
  • la figure 10 est une vue de dessus d'un ski conforme Ă  un cinquième mode de rĂ©alisation de l'invention ;
  • la figure 11 est une vue en perspective Ă©clatĂ©e du ski de la figure 10 ;
  • la figure 12 est une vue en perspective de l'extrĂ©mitĂ© arrière du ski de la figure 10 ;
  • la figure 13 est une coupe selon le plan XIII de la figure 12.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a gliding board according to its principle, given purely by way of example and with reference to the appended drawings in which:
  • the figure 1 is a top view of a ski according to a first embodiment of the invention;
  • the figure 2 is a side view of the ski from the figure 1 ;
  • the figure 3 is a partial section along the plane III-III at the figure 1 and on a larger scale, corresponding to detail III to figure 2 ;
  • the figure 4 is an exploded perspective view of the ski Figures 1 to 3 ;
  • the figure 5 is a cut similar to the figure 3 for a ski according to a second embodiment of the invention;
  • the figure 6 is a cut similar to the figure 3 for a ski according to a third embodiment of the invention;
  • the figure 7 is a top view of a ski according to a fourth embodiment of the invention;
  • the figure 8 is a larger-scale view of detail VIII to the figure 7 ;
  • the figure 9 is a view similar to the figure 4 for skiing Figures 7 and 8 ;
  • the figure 10 is a top view of a ski according to a fifth embodiment of the invention;
  • the figure 11 is an exploded perspective view of the ski from the figure 10 ;
  • the figure 12 is a perspective view of the back end of the ski from the figure 10 ;
  • the figure 13 is a section according to plan XIII of the figure 12 .

Le ski de randonnée 2 représenté sur les figures 1 à 4 est prévu pour être posé sur la surface du sol S qui, par hypothèse, est supposée plane et horizontale. Pour la clarté du dessin, la surface S est représentée seulement sur la figure 2.The ski touring 2 represented on the Figures 1 to 4 is intended to be placed on the surface of the ground S which, by hypothesis, is assumed flat and horizontal. For the sake of clarity, the surface S is represented only on the figure 2 .

Dans la présente description, les notions de « supérieur », « inférieur », « avant », « arrière », « droite » et « gauche » sont définies en référence à une position d'utilisation du ski 2 reposant sur la surface S. Ainsi, une partie « supérieure » est située au dessus d'une partie « inférieure » d'une même pièce. La partie avant désigne la partie du ski 2 se trouvant devant un skieur en situation d'utilisation du ski et la partie arrière la partie opposée à la partie avant.In the present description, the concepts of "superior", "lower", "front", "rear", "right" and "left" are defined with reference to a position of use of the ski 2 resting on the surface S. Thus, an "upper" part is located above a "lower" part of the same part. The front part designates the part of the ski 2 being in front of a skier in ski use situation and the rear part the opposite part to the front part.

L'axe longitudinal X2 du ski 2 est parallèle à la surface S. La partie du ski 2 se trouvant à droite de l'axe X2 du point de vue d'un skieur en situation d'utilisation du ski, est le côté droit. De même, la partie du ski 2 se trouvant à gauche de l'axe X2 du point de vue du skieur est le côté gauche.The longitudinal axis X2 of the ski 2 is parallel to the surface S. The portion of the ski 2 located to the right of the axis X2 from the point of view of a skier in ski use situation, is the right side. Similarly, the part of the ski 2 to the left of the axis X2 from the point of view of the skier is the left side.

On note Y2 un axe perpendiculaire à l'axe X2 et également parallèle à la surface S. Pour finir, on note Z2 un axe perpendiculaire et séquent avec les axes X2 et Y2.Y2 denotes an axis perpendicular to the axis X2 and also parallel to the surface S. Finally, we denote Z2 a perpendicular axis and sequent with the axes X2 and Y2.

On note L2 la longueur du ski 2, mesurée entre son extrémité avant 21 et son extrémité arrière 22 selon l'axe X2. Le ski 2 a une forme légèrement parabolique et sa partie avant 4, appelée spatule, est relevée par rapport à la surface S. En cours d'utilisation, le ski 2 est en appui contre la surface S à l'arrière de la spatule 4. Un segment de droite 41, à partir duquel la surface inférieure du ski cesse d'être en contact avec la surface S, définit l'extrémité arrière de la spatule 4. Le ski étant symétrique selon l'axe X2, le segment de droite 41 est parallèle à l'axe Y2. L'extrémité avant de la spatule constitue l'extrémité avant 21 du ski. La spatule a donc une longueur L4 mesurée entre le segment 41 et l'extrémité 21 comprise entre 100 et 600 mm, tandis que la longueur L2 est comprise entre 1200 et 2000 mm.L2 is the length of the ski 2, measured between its front end 21 and its rear end 22 along the axis X2. The ski 2 has a slightly parabolic shape and its front portion 4, called spatula, is raised relative to the surface S. In use, the ski 2 abuts against the surface S at the rear of the spatula 4. A line segment 41, from which the lower surface of the ski ceases to be in contact with the surface S, defines the rear end of the spatula 4. Since the ski is symmetrical about the axis X2, the line segment 41 is parallel to the axis Y2. The front end of the spatula is the front end 21 of the ski. The spatula therefore has a length L4 measured between the segment 41 and the end 21 between 100 and 600 mm, while the length L2 is between 1200 and 2000 mm.

Le ski 2 a une structure multicouche et comprend un noyau 23, recouvert par des couches supérieures 26 et reposant sur des couches inférieures 27. Les couches supérieures 26 et inférieures 27 recouvrent intégralement le noyau 23.The ski 2 has a multilayer structure and comprises a core 23, covered by upper layers 26 and resting on lower layers 27. The upper layers 26 and lower 27 completely cover the core 23.

Les couches supérieures 26 recouvrant le noyau 23 sont composées, de haut en bas, d'une couche de revêtement 262, d'un renfort supérieur 263, d'une première couche d'aluminium 264, et d'une couche intermédiaire supérieure 266. Il est à noter que la couche d'aluminium 264 et la couche intermédiaire supérieure constituent fonctionnellement des renforts supplémentaires. Les couches inférieures, sur lesquelles repose le noyau 23, sont composées, de bas en haut, d'une semelle 272, d'une couche intermédiaire inférieure 276, d'une deuxième couche d'aluminium 274, ainsi que d'un renfort inférieur 273, et intègrent des carres 271 déposées autour de la semelle 272.The upper layers 26 covering the core 23 are composed, from top to bottom, of a coating layer 262, an upper reinforcement 263, a first aluminum layer 264, and an upper intermediate layer 266. It should be noted that the aluminum layer 264 and the upper intermediate layer functionally constitute additional reinforcements. The lower layers, on which the core 23 rests, are composed, from bottom to top, of a sole 272, a lower intermediate layer 276, a second aluminum layer 274, as well as a lower reinforcement 273, and incorporate edges 271 deposited around the sole 272.

La spatule 4 comprend, sur sa portion terminale avant, un insert 42 implanté entre les renforts supérieur 263 et inférieur 273 et qui prolonge le noyau 23 du ski 2 vers l'avant. Les renforts supérieur 263 et inférieur 273 s'étendent vers l'avant du ski au-delà du noyau 23 et des couches 262, 264, 266, 272, 274, 276, jusqu'à un bord 421 de l'insert 42 opposé au noyau 23. Les renforts 263 et 273 recouvrent intégralement l'insert 42. En revanche, l'insert n'est pas recouvert par les autres couches supérieures 262, 264 et 266 et inférieures 272, 274 et 276. L'insert est maintenu en place uniquement entre les renforts supérieur 263 et inférieur 273.The spatula 4 comprises, on its front end portion, an insert 42 implanted between the upper reinforcements 263 and lower 273 and which extends the core 23 of the ski 2 forward. The upper reinforcements 263 and lower 273 extend forward of the ski beyond the core 23 and the layers 262, 264, 266, 272, 274, 276, to an edge 421 of the insert 42 opposite the core 23. The reinforcements 263 and 273 completely cover the insert 42. In contrast, the insert is not covered by the other upper layers 262, 264 and 266 and lower 272, 274 and 276. The insert is maintained in places only between the upper reinforcements 263 and lower 273.

On note 24 la limite avant de la couche de revêtement 262. Cette limite 24 a, en vue de dessus, une forme en tronçon d'ellipse centrée sur l'axe X2, comme visible à la figure 1. Par ailleurs, la couche de revêtement 262 qui recouvre les couches 264 et 266, est la seule visible sur la figure 1. L'extrémité avant de la spatule, qui est aussi l'extrémité avant 21 du ski 2, a une forme arrondie.The front limit of the coating layer 262 is noted 24. This limit 24 has, in plan view, an ellipse section centered on the axis X2, as visible in FIG. figure 1 . Furthermore, the coating layer 262 which covers the layers 264 and 266, is the only one visible on the figure 1 . The front end of the spatula, which is also the front end 21 of the ski 2, has a rounded shape.

On note L424 la longueur de l'insert 42 mesurée entre, d'une part, l'intersection de la limite avant 24 avec un bord latéral du ski et, d'autre part, l'extrémité avant du ski 21 au niveau de l'axe X2. On note également L423 la longueur de l'insert 42 mesurée selon son axe de symétrie X2. La longueur L424 est comprise entre 20 et 200 mm, tandis que la longueur L423 est comprise entre 10 et 100 mm.We note L424 the length of the insert 42 measured between, on the one hand, the intersection of the front limit 24 with a lateral edge of the ski and, on the other hand, the front end of the ski 21 at the level of the X2 axis. We also note L423 the length of the insert 42 measured along its axis of symmetry X2. The length L424 is between 20 and 200 mm, while the length L423 is between 10 and 100 mm.

L'implantation de l'insert 42 dans le prolongement axial du noyau 23 vers l'avant est visible sur les figures 2 et 3. Le bord avant 231 du noyau 23 vient en contact avec le bord arrière 422 de l'insert 42, ces bords 231 et 422 étant complémentaires. Plus précisément, le bord 231 est convexe et le bord 422 est concave et reçoit en appui surfacique le bord 231. Ainsi, l'insert 42 constitue une âme pour la portion avant de la spatule 4 et prolonge le noyau 23 vers l'avant, au-delà de son bord 231, en étant renforcé et protégé mécaniquement par les renforts 263 et 273.The implantation of the insert 42 in the axial extension of the core 23 towards the front is visible on the figures 2 and 3 . The front edge 231 of the core 23 comes into contact with the rear edge 422 of the insert 42, these edges 231 and 422 being complementary. More specifically, the edge 231 is convex and edge 422 is concave and receives surface support 231 edge. Thus, the insert 42 is a core for the front portion of the spatula 4 and extends the core 23 forward, beyond its edge 231, being reinforced and mechanically protected by the reinforcements 263 and 273.

Dans ce mode de réalisation des figures 1 à 4, les bords 231 et 422 sont sensiblement alignés, le long de l'axe Z2, avec la limite 24.In this embodiment of Figures 1 to 4 the edges 231 and 422 are substantially aligned along the axis Z2 with the boundary 24.

On note P1 un point situé à mi-hauteur des bords 231 et 422 et aligné sur l'axe X2. On note H1 la hauteur du point P1 par rapport à la surface S sur laquelle repose le ski 2, cette hauteur étant mesurée parallèlement à l'axe Z2. Par ailleurs, on note H4 la hauteur maximale de la spatule mesurée à l'extrémité supérieure 25 du renfort supérieur 263 par rapport à la surface du sol S. On note également H2 la hauteur d'une zone de contact entre l'insert 42 et le noyau 23, sur un bord du ski 2 visible en vue de côté comme sur la figure 2. La hauteur H2 est mesurée au niveau d'un point P'1 situé à mi-hauteur des bords 231 et 422, parallèlement à l'axe Z2 et par rapport à la surface S. La hauteur H1 est comprise entre 10 et 50 mm, tandis que la hauteur H4 est comprise entre 40 et 70 mm et la hauteur H2 est comprise entre 0 et 30 mm.We note P1 a point located mid-height of the edges 231 and 422 and aligned on the axis X2. H1 is the height of the point P1 relative to the surface S on which the ski 2 rests, this height being measured parallel to the axis Z2. Furthermore, the maximum height of the spatula measured at the upper end of the upper reinforcement 263 relative to the surface of the ground S is denoted H4. The height of a contact zone between the insert 42 and the core 23, on an edge of the ski 2 visible in side view as on the figure 2 . The height H2 is measured at a point P'1 located halfway up the edges 231 and 422, parallel to the axis Z2 and with respect to the surface S. The height H1 is between 10 and 50 mm, while the height H4 is between 40 and 70 mm and the height H2 is between 0 and 30 mm.

Le renfort inférieur 273 vient directement en contact avec le noyau 23 et l'insert 42 sans qu'aucune couche ne soit intercalée entre eux. En revanche, des couches d'aluminium 264 et intermédiaire 266 sont intercalées entre le noyau 23 et le renfort supérieur 263.The lower reinforcement 273 comes into direct contact with the core 23 and the insert 42 without any layer being interposed between them. On the other hand, layers of aluminum 264 and intermediate 266 are interposed between the core 23 and the upper reinforcement 263.

On note e23 l'épaisseur du noyau 23 et e42 l'épaisseur de l'insert 42. Le noyau 23 et l'insert 42 sont d'épaisseur constante. L'épaisseur e23 est égale à l'épaisseur e42, de préférence avec une valeur comprise entre 1 et 4 mm.Note 23 the thickness of the core 23 and e42 the thickness of the insert 42. The core 23 and the insert 42 are of constant thickness. The thickness e23 is equal to the thickness e42, preferably with a value of between 1 and 4 mm.

L'insert comprend à son extrémité avant une surépaisseur formant un bourrelet 48 . Ce bourrelet 48 a une largeur l48 de l'ordre de quelques millimètres et une épaisseur e48 de l'ordre de 1 mm. Il suit le bord de la spatule 4. Ce bourrelet est créé dans le moule par fluage de la matière de l'insert.The insert comprises at its front end an extra thickness forming a bead 48. This bead 48 has a width 48 of the order of a few millimeters and a thickness E48 of the order of 1 mm. It follows the edge of the spatula 4. This bead is created in the mold by creep of the material of the insert.

La couche de revêtement 262 forme une arête 241 au niveau de sa limite 24 avec le renfort supérieur 263 à partir de laquelle une épaisseur décroît vers l'avant. Ainsi, la couche de revêtement 262 a une forme affinée permettant d'optimiser l'aérodynamisme du ski 2.The covering layer 262 forms an edge 241 at its boundary 24 with the upper reinforcement 263 from which a thickness decreases towards the front. Thus, the coating layer 262 has a refined shape to optimize the aerodynamics of the ski 2.

Le noyau 23 est réalisé dans un matériau dense lui permettant de résister au poids du skieur. L'insert 42, quant à lui, est réalisé en matériau synthétique, notamment en polyuréthane. En pratique, le matériau constituant l'insert 42 est plus souple et plus résistant que celui du noyau 23. De ce fait, il n'est pas nécessaire de protéger l'insert par la couche de revêtement et les couches de renforts supplémentaires. Ainsi, la spatule 4 est plus légère et plus souple que lorsque la même structure multicouche du ski se prolonge sur toute sa longueur et en particulier jusqu'au bord 21. La relative souplesse et la résistance de l'insert lui fait jouer le rôle d'un pare-choc pour l'extrémité avant du ski.The core 23 is made of a dense material allowing it to withstand the weight of the skier. The insert 42, for its part, is made of synthetic material, in particular polyurethane. In practice, the material constituting the insert 42 is more flexible and stronger than that of the core 23. As a result, it is not necessary to protect the insert with the additional coating layer and reinforcement layers. Thus, the spatula 4 is lighter and more flexible than when the same multilayer structure of the ski extends over its entire length and in particular to the edge 21. The relative flexibility and strength of the insert makes it play the role of a bumper for the front end of the ski.

Les renforts supérieur 263 et inférieur 273, mais également les couches intermédiaires, peuvent comprendre des fibres, notamment verre, carbone, végétales, kevlar. Les renforts peuvent également être en métal.The upper reinforcements 263 and lower 273, but also the intermediate layers, may comprise fibers, in particular glass, carbon, vegetable, kevlar. Reinforcements may also be metal.

La figure 4 illustre comment les différentes couches constitutives du ski 2 sont agencées les unes par rapport aux autres. Cette structure multicouche est obtenue par moulage. Lors de la fabrication du ski 2, la semelle 272 et les carres sont disposées au fond d'un moule, puis les couches intermédiaires 276 et d'aluminium 274 sont posées par-dessus. Le renfort 273 est disposé dans le moule au dessus des couches 272, 274 et 276. Ensuite, le noyau 23 et l'insert 42 sont posés sur le renfort 273 en les alignant dans la direction de l'axe X2. Lors de cette opération, les bords 231 et 422 sont mis en contact. Les couches intermédiaires 266 et d'aluminium 264 viennent ensuite recouvrir le noyau 23 et l'insert 42, avant d'être elles-mêmes recouvertes par le renfort supérieur 263. La couche de revêtement 262 est alors apposée sur l'ensemble constitué lors des étapes précédentes.The figure 4 illustrates how the different constituent layers of the ski 2 are arranged relative to each other. This multilayer structure is obtained by molding. During the manufacture of the ski 2, the sole 272 and the edges are arranged at the bottom of a mold, then the intermediate layers 276 and aluminum 274 are placed on top. The reinforcement 273 is placed in the mold above the layers 272, 274 and 276. Then, the core 23 and the insert 42 are placed on the reinforcement 273, aligning them in the direction of the axis X2. During this operation, the edges 231 and 422 are brought into contact. The intermediate layers 266 and aluminum 264 then cover the core 23 and the insert 42, before being themselves covered by the upper reinforcement 263. The coating layer 262 is then affixed to the assembly formed during the previous steps.

L'insert 42 est pourvu, à son extrémité arrière, et sur ses bords extérieurs, de deux débords ou excédents de matière 426, débordant sur l'extérieur de la planche. Ces débords 426 permettent, entre autres, de maintenir l'insert 42 en position, vis-à-vis du noyau 23, lors du moulage.The insert 42 is provided at its rear end and on its outer edges, two overhangs or surplus material 426, projecting on the outside of the board. These overhangs 426 make it possible, inter alia, to maintain the insert 42 in position, with respect to the core 23, during molding.

Une fois les pièces disposées dans le moule, sa température est augmentée afin de faire fondre une résine, type résine époxy, imprégnant certaines au moins des pièces en place dans le moule. Cette résine, en se solidifiant, solidarise les pièces et assure la rigidité du ski.Once the pieces are placed in the mold, its temperature is increased in order to melt a resin, such as an epoxy resin, impregnating at least some of the pieces in place in the mold. This resin, by solidifying, solidarises the pieces and ensures the rigidity of the ski.

Dans les modes de réalisation représentés sur les figures 5 à 13, les éléments analogues à ceux du premier mode de réalisation portent les mêmes références. Dans ce qui suit, on ne décrit que ce qui distingue ces modes de réalisation du premier.In the embodiments shown in Figures 5 to 13 elements similar to those of the first embodiment bear the same references. In what follows, only what distinguishes these embodiments from the first is described.

Dans le deuxième mode de réalisation de la figure 5, l'insert 42 est plus long et est implanté plus profondément dans la structure du ski. Dans le premier mode de réalisation, les couches de revêtement 262, d'aluminium 264, 274, intermédiaires 266, 276 et la semelle 272 ne s'étendent pas au-delà du noyau 23. L'insert 42 est alors maintenu uniquement entre les renforts supérieur 263 et inférieur 273. Dans le deuxième mode de réalisation, le noyau 23 est plus court, et l'insert 42 plus long, de telle sorte que l'insert 42 est partiellement recouvert par les couches supérieures 262, 264 et 266 et inférieures 272, 274 et 276.In the second embodiment of the figure 5 , insert 42 is longer and is implanted deeper into the structure of the ski. In the first embodiment, the aluminum coating layers 262, 264, 274, intermediate 266, 276 and the sole 272 do not extend beyond the core 23. The insert 42 is then held only between upper reinforcements 263 and lower 273. In the second embodiment, the core 23 is shorter, and the insert 42 longer, so that the insert 42 is partially covered by the upper layers 262, 264 and 266 and lower 272, 274 and 276.

Par ailleurs, l'insert 42 est intégralement recouvert par les renforts 263 et 273. Avec ce mode de réalisation, la spatule obtenue est plus solide, les risques de casse de la spatule sont réduits, car l'insert 42, maintenu entre l'ensemble des couches 262, 263, 264, 266, 272, 273, 274 et 276 constituant la structure du ski 2, est moins susceptible de se détacher.Furthermore, the insert 42 is completely covered by the reinforcements 263 and 273. With this embodiment, the spatula obtained is more solid, the risk of breakage of the spatula are reduced because the insert 42, maintained between the all layers 262, 263, 264, 266, 272, 273, 274 and 276 constituting the structure of the ski 2, is less likely to detach.

Dans le troisième mode de réalisation représenté à la figure 6, l'insert 42 est implanté entre les couches supérieures 262, 263, 264 et 266 et inférieures 272, 273, 274 et 276 comme dans le deuxième mode de réalisation. Les bords 422 et 231 du noyau 23 et de l'insert 42 sont étagés de façon à constituer chacun une feuillure. Ainsi, le noyau 23 et l'insert 42 se chevauchent partiellement, et le noyau 23 vient recouvrir partiellement l'insert 42. Celui-ci est donc mieux implanté dans la structure du ski, et a moins de chance de se désolidariser du reste du ski 2, ce qui limite le risque de casse de la spatule 4.In the third embodiment shown at figure 6 , the insert 42 is implanted between the upper layers 262, 263, 264 and 266 and lower 272, 273, 274 and 276 as in the second embodiment. The edges 422 and 231 of the core 23 and the insert 42 are staggered so as to constitute each a rabbet. So, the core 23 and the insert 42 partially overlap, and the core 23 partially covers the insert 42. It is therefore better implanted in the structure of the ski, and has less chance to dissociate from the rest of the ski 2, which limits the risk of breakage of the spatula 4.

Dans le quatrième mode de l'invention représentée aux figures 7, 8 et 9, le noyau 23 comporte une encoche 28 longitudinale selon l'axe X2 et qui débouche sur l'avant. L'insert 42 est implanté dans cette encoche et sur l'avant du noyau. Les couches de semelle 272, de fibres 276 et 266, d'aluminium 274 et 264 et de revêtement 262 comportent elles aussi une encoche débouchant sur l'avant et sensiblement de mêmes dimensions que l'encoche 28 découpée dans le noyau 23. Comme précédemment, les renforts supérieur 263 et inférieur 273 recouvrent intégralement l'insert 42. Ce dernier, ainsi que les renforts 263 et 273, sont chacun percés d'une fente 44 orientée le long de l'axe X2 longitudinal au ski. Cette fente se termine, à son extrémité avant, par un orifice circulaire 46 débouchant.In the fourth embodiment of the invention shown in Figures 7, 8 and 9 , the core 23 has a longitudinal slot 28 along the axis X2 and which opens on the front. The insert 42 is implanted in this notch and on the front of the core. The layers of sole 272, fibers 276 and 266, aluminum 274 and 264 and coating 262 also have a notch opening on the front and substantially of the same dimensions as the notch 28 cut in the core 23. As above , the upper reinforcements 263 and lower 273 completely cover the insert 42. The latter, as well as the reinforcements 263 and 273, are each pierced with a slot 44 oriented along the longitudinal axis X2 to the ski. This slot ends at its front end by a circular orifice 46 opening.

On note L28 la longueur de l'encoche 28 mesurée entre son extrémité arrière 282 et son extrémité avant 281 selon l'axe longitudinal au ski X2. L'encoche est symétrique selon l'axe X2. On note l28 la largeur de l'encoche 28 mesurée selon l'axe Y2. La largeur l28 est croissante selon l'axe X2 en allant de l'extrémité arrière 282 vers l'extrémité avant 281, de telle sorte qu'une partie de l'encoche située à l'avant est plus large qu'une partie de l'encoche située plus à l'arrière. La longueur L28 est comprise entre 50 et 250 mm, tandis que la largeur l28 est comprise entre 5 et 30 mm.Note L28 the length of the notch 28 measured between its rear end 282 and its front end 281 along the longitudinal axis of the ski X2. The notch is symmetrical along the axis X2. It is noted the width 28 of the notch 28 measured along the axis Y2. The width l 28 is increasing along the axis X 2 going from the rear end 282 to the front end 281, such that part of the notch at the front is wider than part of the notch located further back. The length L28 is between 50 and 250 mm, while the width l 28 is between 5 and 30 mm.

On note d44 la distance entre l'extrémité arrière de la fente 242 et l'extrémité avant 21 du ski mesurée selon l'axe X2. On note également l44 la largeur de la fente 44 mesurée selon l'axe Y2. On note D46 le diamètre de l'orifice circulaire D46 et d46 la distance entre son centre C46 et l'extrémité avant 21 du ski 2, mesurée selon l'axe X2. La distance d44 est comprise entre 100 et 250 mm et la largeur l44 de la fente 44 est comprise entre 3 et 8 mm de préférence constante selon l'axe X2 et égale à 5 mm. Le diamètre D46 de l'orifice circulaire est compris entre 10 et 30 mm et le centre C46 de l'orifice est à une distance d46 compris entre 20 et 50 mm de l'extrémité 21 du ski 2.The distance between the rear end of the slot 242 and the front end 21 of the ski measured along the axis X2 is noted d44. Note also the width 44 of the slot 44 measured along the axis Y2. D46 is the diameter of the circular orifice D46 and d46 the distance between its center C46 and the front end 21 of the ski 2, measured along the axis X2. The distance d44 between 100 and 250 mm and width 44 of the slot 44 is between 3 and 8 mm preferably constant according to the X2 axis and equal to 5 mm. The diameter D46 of the circular orifice is between 10 and 30 mm and the center C46 of the orifice is at a distance d46 between 20 and 50 mm from the end 21 of the ski 2.

L'encoche découpée dans le noyau et dans les couches 262, 264, 266, 272, 274 et 276 divise la spatule en deux parties, appelées doigt droit 50 et doigt gauche 51. Le doigt droit 50 désigne une partie de la spatule 4 située à droite de l'encoche 28, tandis que le doigt gauche 51 désigne une partie de la spatule 4 située à gauche de l'encoche 28.The cut notch in the core and in the layers 262, 264, 266, 272, 274 and 276 divides the spatula into two parts, called right finger 50 and left finger 51. The right finger 50 designates a part of the spatula 4 located right of the notch 28, while the left finger 51 designates a portion of the spatula 4 to the left of the notch 28.

L'insert 42 étant fabriqué à partir d'un matériau plus souple que celui constituant le noyau, les doigts 50 et 51 ont la possibilité de fléchir indépendamment l'un de l'autre. Ainsi, la spatule 4 peut se déformer pour s'adapter au dévers de la pente. Dans un cas d'utilisation du ski 2 où il est disposé perpendiculairement au sens de la pente, les deux doigts 50 et 51 sont légèrement décalés l'un par rapport à l'autre, avec le doigt côté amont légèrement relevé par rapport au doigt côté aval. Cette déformation élastique de la spatule permet ainsi d'augmenter l'adhérence et la stabilité du ski, et donc le confort de l'utilisateur.Since the insert 42 is made from a softer material than that constituting the core, the fingers 50 and 51 have the ability to flex independently of one another. Thus, the spatula 4 can deform to adapt to the slope of the slope. In a case of use of the ski 2 where it is arranged perpendicular to the direction of the slope, the two fingers 50 and 51 are slightly offset relative to each other, with the finger upstream side slightly raised relative to the finger downstream side. This elastic deformation of the spatula thus increases the grip and stability of the ski, and therefore the comfort of the user.

Les figures 10 à 13 décrivent un cinquième mode de réalisation dans lequel l'insert est placé à l'extrémité arrière de la planche de glisse.The Figures 10 to 13 describe a fifth embodiment in which the insert is placed at the rear end of the gliding board.

Le ski 2 se compose de trois parties, un talon 84 formant l'extrémité arrière du ski, un corps 6 et une spatule 8 formant son extrémité avant. Le ski 2 a une forme légèrement parabolique, c'est-à-dire que le corps 6 est plus large au niveau de ses jonctions avec le talon 84 et la spatule 8 qu'en son centre.The ski 2 consists of three parts, a heel 84 forming the rear end of the ski, a body 6 and a spatula 8 forming its front end. The ski 2 has a slightly parabolic shape, that is to say that the body 6 is wider at its junctions with the heel 84 and the spatula 8 in its center.

Le ski 2 a une structure multicouche telle qu'illustrée sur les figures 11 et 13. Une couche centrale, constituant l'âme du ski, aussi appelée noyau 23, est disposée sur une structure multicouche inférieure 27 et recouverte d'une structure multicouche supérieure 26. La structure multicouche supérieure 26 est composée, de haut en bas, d'une couche de revêtement 262, d'un renfort supérieur 263, d'une couche d'aluminium 264 et d'une couche intermédiaire 266. La structure multicouche inférieure 27 est composée de haut en bas d'un renfort inférieur 273, d'une couche d'aluminium 274, d'une couche intermédiaire 276, d'une semelle 272 et intègre des carres 271, déposées autour de la semelle 272.The ski 2 has a multilayer structure as illustrated on the figures 11 and 13 . A core layer, constituting the core of the ski, also called core 23, is disposed on a lower multilayer structure 27 and covered with an upper multilayer structure 26. The upper multilayer structure 26 is composed, from top to bottom, of a coating layer 262, an upper reinforcement 263, an aluminum layer 264 and an intermediate layer 266. The lower multilayer structure 27 is composed from top to bottom of a lower reinforcement 273, a layer aluminum 274, an intermediate layer 276, a sole 272 and integrates edges 271, deposited around the sole 272.

Le talon 84 comprend, sur sa portion terminale arrière, un insert 42 implanté entre la couche intermédiaire supérieure 266 et le renfort inférieur 273 et qui prolonge le noyau 23 du ski 2 vers l'arrière.The heel 84 comprises, on its rear end portion, an insert 42 implanted between the upper intermediate layer 266 and the lower reinforcement 273 and which extends the core 23 of the ski 2 towards the rear.

Les renforts supérieur 263 et inférieur 273 peuvent comprendre des fibres, notamment en carbone ou en kevlar, ou être réalisés en métal, en aluminium par exemple.The upper reinforcements 263 and lower 273 may comprise fibers, in particular carbon or Kevlar, or be made of metal, aluminum for example.

L'insert 42 est réalisé en un matériau d'une plus grande rigidité et/ou d'une plus grande dureté que le matériau constituant le noyau 23. Le noyau peut être de manière connue en bois ou en mousse, tandis que l'insert 42 peut par exemple être constitué d'une ou plusieurs matières thermoplastiques. On obtient notamment de bon résultats en réalisant l'insert en polyuréthane thermoplastique.The insert 42 is made of a material of greater rigidity and / or greater hardness than the material constituting the core 23. The core may be known in wood or foam, while the insert 42 may for example consist of one or more thermoplastics. In particular, good results are obtained by producing the thermoplastic polyurethane insert.

La couche de revêtement 262 est répartie uniformément et comporte une surface supérieure 267, parallèle aux axes X2 et Y2 ainsi qu'un bord 268 en forme de chanfrein. Le bord 268 forme une arête 269 avec la surface 267.The covering layer 262 is evenly distributed and has an upper surface 267, parallel to the axes X2 and Y2 and a chamfered edge 268. The edge 268 forms an edge 269 with the surface 267.

Ainsi, on note L4 la longueur du talon 84 mesurée, selon l'axe X2, entre l'extrémité arrière 22 du ski 2 et la droite 421. Les longueurs L2 et L4 sont comprises respectivement entre 1200 et 2000 mm et entre 50 et 150 mm.Thus, L4 is the length of the heel 84 measured, along the axis X2, between the rear end 22 of the ski 2 and the straight line 421. The lengths L2 and L4 are respectively between 1200 and 2000 mm and between 50 and 150 mm.

On note l4 la largeur du talon 84. La largeur l4 du talon 84 est décroissante, le long de l'axe X2, en allant vers l'arrière. En d'autres termes, la largeur l4 du talon 84 est nécessairement inférieure à la largeur du ski mesurée au niveau de la droite 421 ou du corps 6.4 the width of the bead is noted 84. The width l 4 of the heel 84 is decreasing along the X2 axis, going backward. In other words, the width l 4 of the heel 84 is necessarily smaller than the width of the ski measured at the level of the line 421 or the body 6.

Le talon 84 a une forme extérieure globalement trapézoïdale, et ses coins arrière 43 sont arrondis.The heel 84 has a generally trapezoidal outer shape, and its rear corners 43 are rounded.

En vue de dessus, représentée sur la figure 12, les couches de revêtement 262, d'aluminium 264 et intermédiaires 266, forment une bande 844, globalement trapézoïdale, s'étendant depuis l'avant du talon 4 jusqu'à l'extrémité arrière 22 du ski 2. Cette bande 844 ne s'étend pas jusqu'aux bords latéraux droit 50 et gauche 51 du talon. La bande 844 laisse, de part et d'autre de l'axe X2, deux ailettes 45 et 47 de l'insert 42 non recouvertes par les couches de revêtement 262, d'aluminium 264 et intermédiaires 266. Ces ailettes 45 et 47 sont en revanche recouvertes par le renfort supérieur 263. La couche de revêtement 262 recouvrant les couches 264 et 266, est la seule visible sur les figures 1 et 3, mis à part le renfort 263.In top view, shown on the figure 12 , the layers of coating 262, aluminum 264 and intermediate 266, form a band 844, generally trapezoidal, extending from the front of the heel 4 to the rear end 22 of the ski 2. This band 844 does not extend to the right 50 and left 51 side edges of the heel. The strip 844 leaves, on either side of the axis X2, two fins 45 and 47 of the insert 42 not covered by the coating layers 262, aluminum 264 and intermediate layers 266. These fins 45 and 47 are on the other hand covered by the upper reinforcement 263. The coating layer 262 covering the layers 264 and 266, is the only one visible on the figures 1 and 3 , apart from the reinforcement 263.

Comme on peut le voir à la figure 13, les couches de semelle 272, d'aluminium 274 et intermédiaire 276 forment une bande 846 s'étendant depuis l'avant du talon 84 jusqu'à l'extrémité arrière du ski. Cette bande 846 laisse les deux ailettes 45 et 47 de l'insert 42 non recouvertes par les couches inférieures 272, 274 et 276. Les ailettes 45 et 47 sont recouvertes sur le dessous par le renfort inférieur 273. La semelle 272 recouvre les couches 274 et 276.As can be seen at figure 13 , the sole 272, aluminum 274 and intermediate 276 layers form a strip 846 extending from the front of the heel 84 to the rear end of the ski. This band 846 leaves the two fins 45 and 47 of the insert 42 uncovered by the lower layers 272, 274 and 276. The fins 45 and 47 are covered on the underside by the lower reinforcement 273. The sole 272 covers the layers 274. and 276.

On note 2624, 2644 et 2664 respectivement la portion des couches 262, 264 et 266 se trouvant au niveau du talon 84. De même on note 2744, 2764 et 2724 respectivement la portion des couches 274, 276 et 272 se trouvant au niveau du talon 84. On note 2634 la portion arrière du renfort 263 au niveau du talon 84, cette portion étant plus large que les portions 2624, 2644, 2664. De même, on note 2734 la portion arrière du renfort 273, qui est plus large que les portions 2724, 2744 et 2764. Les portions 2624, 2634, 2644 et 2664 constituent ensemble la bande 844, avec la portion 2634 qui déborde latéralement de la bande 844 pour s'étendre jusqu'aux bords 50 et 51. Les portions 2724, 2744 et 2764 constituent ensemble la bande 846.The portion of the layers 262, 264 and 266 lying at the heel 84 is marked 2624, 2644 and 2664 respectively. Similarly, the portion of the layers 274, 276 and 272 lying at the heel 2744, 2764 and 2724 respectively. 84. 2634 is the rear portion of the reinforcement 263 at the heel 84, this portion being wider than the portions 2624, 2644, 2664. Similarly, there is 2734 the rear portion of the reinforcement 273, which is wider than the Portions 2624, 2634, 2644 and 2664 together constitute the band 844, with the portion 2634 protruding laterally from the band 844 to extend to the edges 50 and 51. The portions 2724, 2744 and 2764 together constitute Band 846.

Les bandes 844 et 846 sont sensiblement de mêmes dimensions et superposées le long de l'axe Z2. Les bande 844 et 846 étant symétrique selon l'axe X2, les ailettes 45 et 47 sont elles aussi symétriques selon l'axe X2 et sensiblement de mêmes dimensions.The strips 844 and 846 are substantially of the same size and superimposed along the axis Z2. The strips 844 and 846 being symmetrical along the axis X2, the fins 45 and 47 are also symmetrical along the axis X2 and of substantially the same dimensions.

L'invention a été décrite ci-dessus lors de sa mise en oeuvre avec un ski de randonnée. Elle est également applicable avec d'autres types de planche, notamment autre type de ski, ou surf.The invention has been described above when it is implemented with a ski touring. It is also applicable with other types of board, including other types of skiing, or surfing.

Les caractéristiques techniques du mode de réalisation et des variantes mentionnées ci-dessus peuvent être combinées entre elles.The technical features of the embodiment and variants mentioned above can be combined with each other.

Claims (12)

  1. Sliding board (2) which has a rear end and a shovel-shaped front end (4), and which comprises a multi-layer structure including at least:
    - a core (23);
    - an upper reinforcement (263) arranged above the core;
    - a coating layer (262) arranged above the upper reinforcement;
    - a lower reinforcement (273) arranged below the core;
    - a sliding sole (272) arranged below the lower reinforcement;
    characterized in that:
    - an end insert (42), placed at least partially between the upper and lower reinforcements, extends the core at one of its ends; and in that
    - one of the following elements: coating layer and sliding sole does not fully cover said end insert.
  2. Sliding board (2) according to Claim 1, characterized in that the upper (263) and lower (273) reinforcements extend from the core (23) to an edge (421) of the insert (42) remote from the core.
  3. Sliding board (2) according to Claim 1, characterized in that the insert (42) is completely covered by the upper (263) and lower (273) reinforcements.
  4. Sliding board (2) according to one of the preceding claims, characterized in that the insert (42) is made of a material that is more flexible and/or stronger than that of the core (23), in particular polyurethane .
  5. Sliding board (2) according to one of the preceding claims, characterized in that the core (23) and the insert (42) are arranged end-to-end (231/422) between the upper (263) and lower (273) reinforcements.
  6. Sliding board (2) according to one of Claims 1 to 4, characterized in that the core (23) and the insert (42) overlap between the upper (263) and lower (273) reinforcements.
  7. Sliding board according to one of the preceding claims, characterized in that the insert (42) is placed at the front end of the board and forms the raised shovel thereof.
  8. Sliding board according to one of Claims 1 to 6, characterized in that the insert (42) is placed at the rear end of the board and forms the tail thereof.
  9. Sliding board (2) according to one of the preceding claims, characterized in that:
    - the multi-layer structure comprises;
    - above the core (23) and above the upper reinforcement (263), at least one second upper layer (264, 266);
    - below the core (23) and below the lower reinforcement (273), at least one second lower layer (272, 274, 276);
    - the second upper layer (264, 266) is interposed, height-wise, between the core and the upper reinforcement, and
    - the lower reinforcement (273) is in contact with the core, the second lower layer (272, 274, 276) not being interposed therebetween.
  10. Sliding board (2) according to one of the preceding claims, characterized in that the core (23) comprises a longitudinal notch (28) that is open to the front, and in that the insert (42) extends partially into the notch.
  11. Sliding board (2) according to one of the preceding claims, characterized in that the insert (42) comprises a slot (44) oriented along a longitudinal axis (X2) of the sliding board.
  12. Method for manufacturing a sliding board (2) according to one of the preceding claims, characterised in that it comprises at least successive steps of:
    a) arranging, in a mould, the sliding sole (272) and, above the latter, the lower reinforcement (273);
    b) arranging, in the mould and above the lower reinforcement (273), the core (23) and the insert (42), aligning these along a longitudinal direction such that the end insert extends the core at one of its ends;
    c) arranging, in the mould and above the core (23) and the insert (42), the upper reinforcement (263) such that the end insert is at least partially positioned between the upper and lower reinforcements; then arranging the coating layer (11) above the upper reinforcement; such that one of the following elements; coating layer (11) and sliding sole (272) does not fully cover said end insert (42);
    d) raising the temperature of the parts arranged in the mould in order to melt a resin that impregnates at least some of these parts (23, 262, 263, 264, 266, 272, 273, 274, 276).
EP15000805.0A 2014-03-20 2015-03-18 Snowboard and method for manufacturing same Active EP2921210B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1400674A FR3018697B1 (en) 2014-03-20 2014-03-20 SLIDING BOARD AND METHOD OF MANUFACTURING SUCH A BOARD
FR1400673A FR3018696B1 (en) 2014-03-20 2014-03-20 SLIDING BOARD AND METHOD OF MANUFACTURING SUCH A BOARD

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EP2921210A1 EP2921210A1 (en) 2015-09-23
EP2921210B1 true EP2921210B1 (en) 2017-07-05

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EP15000805.0A Active EP2921210B1 (en) 2014-03-20 2015-03-18 Snowboard and method for manufacturing same

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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618078B1 (en) * 1987-07-15 1994-04-01 Salomon Sa DIVERGENT SUPERIOR SKIING
AT394811B (en) * 1988-09-23 1992-06-25 Head Sportgeraete Gmbh SKI
WO2000038801A1 (en) * 1998-12-28 2000-07-06 Nidecker S.A. Gliding board
FR2804335B1 (en) * 2000-01-28 2002-04-19 Salomon Sa SNOWBOARD FOR SNOW SURFING
DE60136902D1 (en) * 2000-08-16 2009-01-22 K 2 Corp SNOWBOARD WITH PARTIAL SIDE WALL
FR2906153B1 (en) * 2006-09-22 2009-07-17 Salomon Sa SLIDING BOARD FOR SNOW
AT505448B1 (en) * 2007-06-28 2009-05-15 Kaestle Gmbh SKI
FR2947461B1 (en) * 2009-07-06 2011-06-10 Rossignol Sa SNOWBOARD BOARD ON SNOW
FR2983415B1 (en) * 2011-12-05 2015-02-20 Rossignol Sa SLIDING BOARD STRUCTURE ELEMENT ON SNOW, AND SLIDING BOARD INCORPORATING SUCH ELEMENT

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EP2921209A1 (en) 2015-09-23
EP2921209B1 (en) 2017-10-18

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