EP2213339B1 - Ski including a vibration damping system - Google Patents

Ski including a vibration damping system Download PDF

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Publication number
EP2213339B1
EP2213339B1 EP10000901A EP10000901A EP2213339B1 EP 2213339 B1 EP2213339 B1 EP 2213339B1 EP 10000901 A EP10000901 A EP 10000901A EP 10000901 A EP10000901 A EP 10000901A EP 2213339 B1 EP2213339 B1 EP 2213339B1
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EP
European Patent Office
Prior art keywords
ski
blade
gliding board
damping
housing
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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.)
Not-in-force
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EP10000901A
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German (de)
French (fr)
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EP2213339A1 (en
Inventor
Gilles Silva
Pierre Garcin
Rupert Huber
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Salomon SAS
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Salomon SAS
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Publication of EP2213339A1 publication Critical patent/EP2213339A1/en
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Publication of EP2213339B1 publication Critical patent/EP2213339B1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/075—Vibration dampers
    • 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
    • A63C5/003—Structure, covering or decoration of the upper ski surface
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/003—Non-swivel sole plate fixed on the ski

Definitions

  • the invention relates to a ski, in particular an alpine ski, comprising means for damping vibrations.
  • skis In snow behavior, skis are subjected to impacts or bending stresses more or less prolonged causing vibrations of the ski. These vibrations are for the most part harmful parasitic effects which cause a loss of ski / snow adhesion which is detrimental to the driving and stability of the ski.
  • a damping device consisting of a flexion blade whose first part is fixed longitudinally with respect to the ski and a second part of which is movably connected to it by friction means.
  • the flexion blade is either disposed on the upper surface of the ski, or in the structure of the ski.
  • the present invention therefore aims to provide a ski comprising an improved vibration damping means which at least partially solves the aforementioned drawbacks by allowing relative movement between the gliding board and the blade, while improving the mechanical strength of the blade. skiing and remaining simple to manufacture.
  • the invention relates to a ski comprising a gliding board and a blade disposed on the gliding board, a first portion of which is fixed to the gliding board in a central mounting area of the ski bindings and extends towards one end of the gliding board by a second part having a means of damping vibrations, characterized in that that the second part is received in a corresponding housing formed in said end of the gliding board and in that said damping means provides at least two damping contact zones between said second part and the corresponding housing to damp the vibrations of the gliding board.
  • the arrangement allows better mechanical shock protection, the second part of the blade thus being sealed relative to the outside.
  • the blade can be inserted and assembled after the manufacture of the gliding board.
  • the vibrations are thus damped by a damping means whose height space on the ski is reduced to a minimum and the static stiffness of the ski is not affected by the damping means.
  • a ski 1 in particular an alpine ski, comprising a central mounting area 2 ski bindings 3, 4, for retaining the ski boot.
  • the Central mounting area 2 is thus delimited by a front attachment 3, commonly called abutment, and a rear attachment 4 or heel.
  • the ski comprises a gliding board 5 whose front end 6 is raised to form the spatula 7, while the rear end 8 is also to form the heel 9 of the ski.
  • the gliding board 5 also comprises a lower sliding surface 10 and an upper surface 11. It should be noted that the contact of the lower surface 10 with the snow is between the point of contact before 12 and the point of rear contact 13 corresponding to the locations of said lower surface 10 beginning to rise.
  • the gliding board 5 comprises a core layer 14 of cellular material on the faces of which are arranged reinforcing layers 15, 16.
  • the lower sliding surface of the ski 10 comprises a gliding sole 17, for example made of polyethylene, framed by two metal edges 18, a lower reinforcing layer 15, the core layer 14, a top reinforcing layer 16 and a layer of decor and protection 19 in upper surface 11.
  • Core layer 14 may be of cellular material and / or wood-based material.
  • the cellular material is for example chosen from rigid foams of plastic material, such as polyurethane foam, expanded polystyrene, extruded polystyrene, PVC or polyamides.
  • the reinforcing layers 15, 16 are advantageously layers of composite material such as fibers (glass, carbon, aramid, or mixtures thereof) impregnated or embedded in a resin (thermoplastic or thermosetting, for example of the polyester or epoxy type).
  • the fibers are for example chosen from long woven fibers, with the possibility of superimposing several fabrics (identical or different, with different fiber orientations) within the same reinforcing layer.
  • Other reinforcing materials such as metals (especially aluminum), wood, or plastics with good mechanical properties, can also be envisaged.
  • This laminated sandwich structure allows a very good ratio between the weight and the mechanical strength of the ski, particularly from the point of view of its stiffness in bending.
  • the ski 1 further comprises a blade disposed on the gliding board 5, on which a corresponding ski binding is intended to be fixed.
  • a first part of the blade is fixed on the upper surface 11 of the gliding board 5, outside its actual structure, in the central mounting area 2 of the ski bindings 3, 4.
  • the first portion extends towards one end 6, 8 of the gliding board 5, for example to the point of contact with the front 12, by a second portion having a vibration damping means.
  • the second part is received in a corresponding housing formed in the end of the gliding board.
  • the damping means provides for at least two areas of contact damping between the second part of the blade and the corresponding housing to dampen the vibrations of the gliding board.
  • the ski may comprise a front blade and / or a rear blade.
  • the Figures 1a, 1b , 1c, 1d , 1e and 1f represent a first embodiment of the damping means for which the ski comprises a front blade 20a and a rear blade 20b.
  • the vibrations are damped both at the front end 6 and the rear end 8 of the ski 1.
  • the front and rear blades 20a, 20b are easily assembled to the gliding board 5 after manufacture.
  • the blades 20a, 20b may be metal, aluminum or steel, or composite material.
  • the front blade 20a has a first portion 21a fixed by a rigid connection to the gliding board 5 in the central mounting area 2, for example, at the stop 3.
  • the first portion 21a comprises for example four through holes 23 disposed in a rectangle which allow the passage of the corresponding clamping screws 24 for fixing the blade 20a to the gliding board 5.
  • the through holes 23 are for example symmetrically distributed on either side of a longitudinal axis N of the ski 1.
  • at least two holes 23 may be oblong with the largest dimension in the longitudinal direction. The oblong holes thus make it possible to increase the tolerance of the dimensions between the holes 23 for the adjustment of the blade to the gliding board 5.
  • the front blade 20a has for example a length of the order of 80 cm.
  • the first part 21a has for example a length of the order of 30 cm, a width slightly less than the total width of the ski, for example, of the order of 4.5 cm and a thickness of about 5 cm. mm.
  • the first part 21a extends towards the front end 6 forming a second part 22a comprising a vibration damping means.
  • the second portion 22a is intended to be received in a housing 25 provided at the front end 6 of the gliding board 5.
  • the second portion 22a has for example a width of 2.5 cm.
  • the housing 25 has a hollow profile forming a tunnel or sheath (see Figure 1c and 1d ). It is for example formed under the upper reinforcing layer 16 and has equal dimensions, slightly smaller or slightly greater than the dimensions of the second portion 22a to allow its sliding during assembly.
  • the core layer 14 of the gliding board 5 has for example a central notch 26, above the neutral fiber, in which the housing 25 is arranged, so as to reduce the weight of the ski.
  • the grooves 27 provide a good rigidity of the ski and a good retention of the blade in the housing 25, while providing a certain flexibility of deformation.
  • the grooves 27 can lighten the gliding board 5.
  • the grooves 27 allow users to materialize housing 25 and thus to differentiate skis equipped with damping means.
  • the section of the blade 20a in a cross-section has for example a generally rectangular shape ( figure 1c ).
  • the section may be variable.
  • the first portion 21a has an enlarged shape with respect to the second portion 22a ( figure 1e ), which allows a better grip for the corresponding ski binding 3.
  • the junction between the first 21a and the second portion 22a may have a soft shape, for example trapezoidal, to facilitate the insertion of the blade 20a in its housing 35.
  • the blade 20a may also have a stop 37, for example formed by a blister of the blade, upstream of the second portion 22a to guide the insertion of the second portion 22a into the housing 35.
  • FIGS. 2 and 3 are views similar to the figure 1c , representing other embodiments of the gliding board 5.
  • the second portion 22a of the blade 20a is raised relative to the upper surface 11 of the gliding board 5.
  • the core layer 14 has the general trapezoidal shape and has no notch.
  • the gliding board 5 of the figure 3 has a similar structure to the figure 1c for which the core layer 14 has a central notch 26 but for which the upper surface 11 does not have a groove.
  • the damping means of the second portion 22a comprises three damping contact zones with the housing 25, along the longitudinal axis N of the ski 1, forming longitudinally spaced flexible connection means.
  • the damping means is formed by three damping inserts 28 housed in three corresponding insert holes 29 formed in the second portion 22a of the blade 20a.
  • the three inserts holes 29 are for example longitudinally spaced apart by a distance D1 of the order of 20 cm and spaced apart from the first portion 21a of the blade 20a by a distance D2 of the order of 10 cm ( figure 1e ).
  • each damping insert 28 is intended to cooperate with a fixing screw 31 to flexibly fix the blade 20a to the gliding board 5. It is also possible to provide washers 32 under the heads of the screws 31 at the level of the upper surface 11 of the gliding board 5, as visible in figure 1a .
  • the damping insert 28 comprises, for example, on the one hand, a central piece 33 in which the screw 31 is screwed, and on the other hand, a damping material 34 surrounding said piece 33.
  • the piece 33 is rigid, for example plastic material.
  • the damping material 34 is a flexible material of the elastic type, such as an elastomer. It has a thickness substantially equal to the thickness of the blade 20a so as to pass through the insert hole 29 and has a width of between 2 and 6 millimeters for example.
  • the damping material 34 is for example glued around the central piece 33 to then be inserted into the corresponding insert hole 29.
  • the insert 28 and the corresponding insert hole 29 may have an elongate shape, preferably oblong, with a length for example of the order of 2.5 cm in the longitudinal direction of the ski and a width of the order of 3.5 cm.
  • Two orifices 30 can then be arranged to cooperate with two fastening screws 31 in each insert 28 ( figure 1e ).
  • Other embodiments could also be provided for the insert and the corresponding insert hole.
  • the rear blade 20b has a first portion 21b fixed to the gliding board 5 in the central mounting area 2, for example, at the heel piece 4 ( figure 1e ).
  • the first part 21b extends towards the rear end 8, for example up to the rear contact point 13, by a second part 22b intended to be received in a housing 25 provided at the rear end 8 of the gliding board. 5.
  • the damping means comprises two damping contact zones between the second portion 22b and the housing 25, formed by two damping inserts 28, for example identical to those arranged in the front blade 20a.
  • the transverse edges 35a, 35b of the respective first portions 21a, 21b of the front and rear blades 20a, 20b may be shaped to cooperate with a seal 36 of the ski 1 of complementary shape interposed between said transverse edges 35a, 35b.
  • the connection by the seal 36 is made in the central mounting zone 2, between the stop 3 and the heel piece 4.
  • the seal 36 is for example made of elastomeric material. Such a connection makes it possible in particular to achieve a good longitudinal alignment of the front and rear blades 20a, 20b and reduces the positioning tolerances of the two blades.
  • first first portions 21a, 21b are shown whose transverse edges 35a, 35b have a wavelet shape and cooperate with a seal 36 of complementary shape.
  • Other complementary shapes of the joint and transverse edges could also be envisaged.
  • the shape of the seal may be provided to retain the front and rear blades 20a, 20b, one to another and prevent their spacing.
  • the transverse edges of the first portions 21a, 21b have protuberances or recesses for cooperating with complementary forms of the joint, such as pieces of a puzzle or dovetail shape (not shown).
  • the front blade 20a and the rear blade 20b are formed in one piece.
  • the blade is assembled to the gliding board 5 during the ski manufacturing process.
  • the vibrations of the gliding board 5 are damped at several points of contact by the damping inserts 28.
  • the fastening screws 31 and the central piece 33 move relatively to the corresponding inserts holes 29, the elasticity being produced by the damping material 34.
  • the blade thus opposes the deformation of the gliding board 5 in compression and in tension, the damping inserts 28 forming stops resilient, allowing the movement of the gliding board 5 relative to the blade to attenuate the vibrations of the ski 1 at the fasteners.
  • the damping means is formed by the friction of the outer surfaces of the second portion 22a at least partially along the inner walls of the corresponding housing 25. The friction thus forms a continuous damping contact zone between the second part of the blade 22a and the corresponding housing 25 for damping the vibrations of the gliding board 5.
  • the ski 1 may comprise a front blade 20a and / or a rear blade 20b.
  • the front blade 20a and the rear blade 20b can be assembled by a seal 36 of the ski 1 ( Figures 5a and 5c ) or form a single piece ( Figures 5b and 5d ).
  • the cross section of the blade can be constant ( Figures 5c and 5d ) or variable ( Figures 5a and 5b ).
  • the blade moves in the housing relative to the end of the ski 6, 8 and is braked by the friction of the blade in the corresponding housing 25, damping vibrations.
  • the friction can also be accentuated in zones of damping contact, by increasing the clamping force of the blade to the gliding board 5, by at least one means of accentuation of the friction.
  • the housing has a sinuosity, to increase the friction of the blade at the location of the corrugation of the housing.
  • the blade is made of steel and the housing comprises at least one magnet located at a specific point, to accentuate the friction of the blade where a magnetic field is formed.
  • a ski is thus obtained whose damping means has several points of recovery of the bending forces, making it possible to distribute the damping over the length of the ski, in a continuous or discontinuous manner, while allowing better mechanical protection against impacts and remaining simple to assemble.

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  • Vibration Prevention Devices (AREA)

Description

L'invention est relative à un ski, en particulier un ski alpin, comportant un moyen d'amortissement des vibrations.The invention relates to a ski, in particular an alpine ski, comprising means for damping vibrations.

En comportement sur neige, les skis sont soumis à des chocs ou des sollicitations en flexion plus ou moins prolongées causant des vibrations du ski. Ces vibrations sont pour la plupart des effets parasites néfastes qui provoquent une perte d'adhérence ski/neige nuisant à la conduite et à la stabilité du ski.In snow behavior, skis are subjected to impacts or bending stresses more or less prolonged causing vibrations of the ski. These vibrations are for the most part harmful parasitic effects which cause a loss of ski / snow adhesion which is detrimental to the driving and stability of the ski.

Différentes solutions ont déjà été proposées pour améliorer le comportement vibratoire d'un ski. Le document US 2008/0185818 propose par exemple de superposer une lame de transmission à la planche de glisse du ski. La lame est reliée à la planche de glisse par une pluralité de moyens de connexion, dont un au moins est élastique. Toutefois, l'assemblage à la planche de glisse n'est pas protégé de sorte que la tenue mécanique de l'ensemble peut s'en trouver affaiblie. Par ailleurs, des saletés peuvent se loger entre la planche de glisse et la lame, ou de la glace peut se former, fragilisant le ski et le rendant moins performant.Various solutions have already been proposed to improve the vibration behavior of a ski. The document US 2008/0185818 proposes, for example, superimposing a transmission blade on the gliding board of the ski. The blade is connected to the gliding board by a plurality of connection means, at least one of which is elastic. However, the assembly to the gliding board is not protected so that the mechanical strength of the assembly can be weakened. In addition, dirt can be lodged between the gliding board and the blade, or ice can form, weakening the ski and making it less efficient.

Une autre solution publiée dans le document FR 2 675 392 consiste à reprendre les efforts de flexion appliqués sur le ski à travers une lame de flexion dont l'une des extrémités est fixée de manière rigide à la planche de glisse et l'autre extrémité est liée à ladite planche par une interface en matériau viscoélastique soumise au cisaillement de la lame. L'interface est reliée soit directement au-dessus du ski, soit encore, complètement logée dans le noyau. On constate cependant qu'avec cet agencement localisé en un seul point, l'amortissement des vibrations n'est pas toujours optimum et cette lame peut être sujette elle-même à des vibrations, ce qui peut conduire à des effets vibratoires imprévisibles, voire des résonnances de l'assemblage. En outre, lorsque l'interface et la lame sont complètement logées dans le noyau, l'assemblage du ski est compliqué.Another solution published in the document FR 2,675,392 consists in taking up the bending forces applied to the ski through a flexion blade one end of which is fixed rigidly to the gliding board and the other end is connected to said board by an interface of viscoelastic material subjected shearing the blade. The interface is connected either directly above the ski, or still completely housed in the core. However, it can be seen that with this arrangement located at a single point, the damping of the vibrations is not always optimum and this blade can itself be subject to vibrations, which can lead to unforeseeable vibratory effects, or even resonances of the assembly. In addition, when the interface and the blade are completely housed in the core, the assembly of the ski is complicated.

On connait aussi du document FR 2 678 517 , un dispositif d'amortissement constitué par une lame de flexion dont une première partie est fixée longitudinalement par rapport au ski et dont une deuxième partie lui est reliée de façon mobile par des moyens de frottement. La lame de flexion est soit disposée à la surface supérieure du ski, soit dans la structure du ski. Comme précédemment, on constate une faible tenue aux chocs au niveau du dispositif d'amortissement à l'extérieur ou des difficultés de réalisation pour un dispositif d'amortissement logé dans la structure du ski.We also know document FR 2,678,517 , a damping device consisting of a flexion blade whose first part is fixed longitudinally with respect to the ski and a second part of which is movably connected to it by friction means. The flexion blade is either disposed on the upper surface of the ski, or in the structure of the ski. As before, there is a low resistance to shocks at the external damping device or difficulties of realization for a damping device housed in the structure of the ski.

La présente invention vise donc à proposer un ski comportant un moyen d'amortissement perfectionné des vibrations qui résout au moins partiellement les inconvénients susmentionnés en permettant un mouvement relatif entre la planche de glisse et la lame, tout en permettant d'améliorer la tenue mécanique du ski et en restant simple à fabriquer.The present invention therefore aims to provide a ski comprising an improved vibration damping means which at least partially solves the aforementioned drawbacks by allowing relative movement between the gliding board and the blade, while improving the mechanical strength of the blade. skiing and remaining simple to manufacture.

A cet effet, l'invention a pour objet un ski comportant une planche de glisse et une lame disposée sur la planche de glisse dont une première partie est fixée à la planche de glisse dans une zone centrale de montage des fixations de ski et s'étend vers une extrémité de la planche de glisse par une deuxième partie présentant un moyen d'amortissement des vibrations, caractérisé en ce que la deuxième partie est reçue dans un logement correspondant ménagé dans ladite extrémité de la planche de glisse et en ce que ledit moyen d'amortissement prévoit au moins deux zones de contacts amortissants entre ladite deuxième partie et le logement correspondant pour amortir les vibrations de la planche de glisse.For this purpose, the invention relates to a ski comprising a gliding board and a blade disposed on the gliding board, a first portion of which is fixed to the gliding board in a central mounting area of the ski bindings and extends towards one end of the gliding board by a second part having a means of damping vibrations, characterized in that that the second part is received in a corresponding housing formed in said end of the gliding board and in that said damping means provides at least two damping contact zones between said second part and the corresponding housing to damp the vibrations of the gliding board.

L'un des principaux avantages d'une telle construction est qu'on obtient plusieurs points ou zones de reprise des efforts en flexion. L'amortissement est ainsi mieux réparti sur la longueur du ski.One of the main advantages of such a construction is that one obtains several points or zones of recovery of the forces in flexion. The damping is thus better distributed over the length of the ski.

En outre, l'agencement permet une meilleure protection mécanique aux chocs, la deuxième partie de la lame étant ainsi étanchéifiée par rapport à l'extérieur.In addition, the arrangement allows better mechanical shock protection, the second part of the blade thus being sealed relative to the outside.

Par ailleurs, étant donné que seule la deuxième partie de la lame est reçue dans le logement correspondant, la lame peut être insérée et assemblée postérieurement à la fabrication de la planche de glisse.Moreover, since only the second part of the blade is received in the corresponding housing, the blade can be inserted and assembled after the manufacture of the gliding board.

Les vibrations sont ainsi amorties par un moyen d'amortissement dont l'encombrement en hauteur sur le ski est réduit au minimum et la rigidité statique du ski n'est pas affectée par le moyen d'amortissement.The vibrations are thus damped by a damping means whose height space on the ski is reduced to a minimum and the static stiffness of the ski is not affected by the damping means.

Selon une ou plusieurs caractéristiques du ski prise seule ou en combinaison,

  • ledit moyen d'amortissement comporte au moins deux inserts amortisseurs logés dans deux trous d'insert correspondants ménagés dans ladite deuxième partie de ladite lame, chaque insert amortisseur coopérant avec une vis de fixation fixée à la planche de glisse pour amortir les vibrations du ski,
  • l'insert amortisseur comporte d'une part, une pièce centrale dans laquelle un orifice est ménagé et d'autre part, un matériau amortisseur entourant ladite pièce,
  • ledit insert et ledit trou d'insert correspondant présentent une forme allongée,
  • ledit moyen d'amortissement est formé par le frottement des surfaces externes de ladite deuxième partie au moins partiellement le long des parois internes du logement correspondant,
  • le logement comporte au moins un moyen d'accentuation du frottement dans la zone de contact amortissant,
  • le ski comporte une lame avant et une lame arrière,
    • la première partie de la lame avant étant fixée à la planche de glisse dans ladite zone centrale et la deuxième partie de la lame avant étant reçue dans un logement correspondant ménagé dans l'extrémité avant de la planche de glisse et,
    • la première partie de la lame arrière étant fixée à la planche de glisse dans ladite zone centrale et la deuxième partie de la lame arrière étant reçue dans un logement correspondant ménagé dans l'extrémité arrière de la planche de glisse,
  • des bordures transversales des premières parties respectives des lames avant et arrière sont conformées pour coopérer avec un joint du ski de forme complémentaire intercalé entre lesdites bordures transversales,
  • la lame avant et la lame arrière sont formées d'une seule pièce,
  • la lame avant comporte trois inserts amortisseurs et la lame arrière comporte deux inserts amortisseurs,
  • la planche de glisse comporte une couche de noyau présentant une entaille centrale, au-dessus de la fibre neutre du ski et dans laquelle le logement est agencé,
  • la première partie présente une forme élargie par rapport à la deuxième partie,
  • le moyen d'amortissement d'au moins une lame est constitué en partie au moins par une zone ou une surface de la lame, la zone ou la surface étant prévue pour frotter dans le logement, sachant que chaque zone ou surface peut s'étendre sur le dessus de la lame, ou sur le dessous ou encore les deux, et qu'elle peut s'étendre selon toute la longueur ou selon une partie seulement de la longueur.
According to one or more characteristics of the ski taken alone or in combination,
  • said damping means comprises at least two damping inserts housed in two corresponding insert holes formed in said second portion of said blade, each damping insert cooperating with a fixing screw fixed to the gliding board for damping the vibrations of the ski,
  • the damper insert comprises firstly, a central piece in which an orifice is formed and secondly, a damping material surrounding said piece,
  • said insert and said corresponding insert hole have an elongate shape,
  • said damping means is formed by the friction of the outer surfaces of said second portion at least partially along the inner walls of the corresponding housing,
  • the housing comprises at least one means for accentuating the friction in the damping contact zone,
  • the ski has a front blade and a rear blade,
    • the first part of the front blade being fixed to the gliding board in said central zone and the second part of the front blade being received in a corresponding housing formed in the front end of the gliding board and,
    • the first part of the rear blade being fixed to the gliding board in said central zone and the second part of the rear blade being received in a corresponding housing formed in the rear end of the gliding board,
  • transverse edges of the respective first portions of the front and rear blades are shaped to cooperate with a complementary shaped ski seal interposed between said transverse edges,
  • the front blade and the rear blade are formed in one piece,
  • the front blade has three damping inserts and the rear blade has two damping inserts,
  • the gliding board comprises a core layer having a central notch, above the neutral fiber of the ski and in which the housing is arranged,
  • the first part has an enlarged shape compared to the second part,
  • the damping means of at least one blade is constituted in part by at least one zone or surface of the blade, the zone or surface being provided for rubbing in the housing, knowing that each zone or surface can extend on the top of the blade, or on the underside or both, and that it may extend the full length or only a part of the length.

D'autres avantages et caractéristiques apparaîtront à la lecture de la description de l'invention, ainsi que sur les figures annexées sur lesquelles :

  • la figure 1a est une vue schématique de dessus d'un ski,
  • la figure 1b est une vue de côté du ski de la figure 1a,
  • la figure 1c est une vue schématique en coupe transversale selon la ligne AA du ski de la figure 1,
  • la figure 1d est une vue schématique partielle en coupe longitudinale selon la ligne BB du ski de la figure 1a,
  • la figure 1e est une vue de dessus éclatée d'une lame avant, d'un joint et d'une lame arrière du ski de la figure 1a,
  • la figure 1f est une vue agrandie d'un détail sélectionné en pointillé sur la figure 1e,
  • la figure 2 est une vue similaire à celle de la figure 1c illustrant une variante de réalisation du ski,
  • la figure 3 est une vue similaire à celle de la figure 1c illustrant une autre variante de réalisation du ski,
  • la figure 4 est une vue similaire à celle de la figure 1e illustrant une variante de réalisation de la lame et,
  • les figures 5a, 5b, 5c et 5d représentent plusieurs variantes d'un deuxième mode de réalisation de la lame,
Other advantages and characteristics will appear on reading the description of the invention, as well as on the appended figures in which:
  • the figure 1a is a schematic view from above of a ski,
  • the figure 1b is a side view of the ski from the figure 1a ,
  • the figure 1c is a schematic view in cross-section along line AA of the ski of the figure 1 ,
  • the figure 1d is a partial schematic view in longitudinal section along the line BB of the ski of the figure 1a ,
  • the figure 1e is an exploded top view of a front blade, a seal and a rear blade of the ski of the figure 1a ,
  • the figure 1f is an enlarged view of a detail selected dotted on the figure 1e ,
  • the figure 2 is a view similar to that of the figure 1c illustrating an embodiment variant of the ski,
  • the figure 3 is a view similar to that of the figure 1c illustrating another variant embodiment of the ski,
  • the figure 4 is a view similar to that of the figure 1e illustrating an embodiment variant of the blade and,
  • the Figures 5a, 5b, 5c and 5d represent several variants of a second embodiment of the blade,

Sur ces figures, les éléments identiques portent les mêmes numéros de référence. Dans la suite du texte, les notions de supérieure, inférieure, haut et bas seront utilisées en référence aux dessins annexés, afin de faciliter la compréhension de la description, sans avoir de caractère limitatif vis-à-vis de la portée de l'invention.In these figures, the identical elements bear the same reference numbers. In the rest of the text, the notions of superior, inferior, high and low will be used with reference to the accompanying drawings, in order to facilitate the understanding of the description, without being limiting in nature to the scope of the invention. .

On a illustré sur les figures 1a et 1b, un ski 1, en particulier un ski alpin, comprenant une zone centrale de montage 2 des fixations de ski 3, 4, destinées à retenir la chaussure de ski. La zone centrale de montage 2 est ainsi délimitée par une fixation avant 3, communément appelée butée, et une fixation arrière 4 ou talonnière.We have illustrated on Figures 1a and 1b , a ski 1, in particular an alpine ski, comprising a central mounting area 2 ski bindings 3, 4, for retaining the ski boot. The Central mounting area 2 is thus delimited by a front attachment 3, commonly called abutment, and a rear attachment 4 or heel.

Le ski comporte une planche de glisse 5 dont l'extrémité avant 6 est relevée pour former la spatule 7, tandis que l'extrémité arrière 8 l'est aussi pour former le talon 9 du ski.The ski comprises a gliding board 5 whose front end 6 is raised to form the spatula 7, while the rear end 8 is also to form the heel 9 of the ski.

La planche de glisse 5 comprend par ailleurs une surface inférieure de glissement 10 et une surface supérieure 11. Notons que le contact de la surface inférieure 10 avec la neige se fait entre le point de contact avant 12 et le point de contact arrière 13 correspondant aux endroits de ladite surface inférieure 10 commençant à se relever.The gliding board 5 also comprises a lower sliding surface 10 and an upper surface 11. It should be noted that the contact of the lower surface 10 with the snow is between the point of contact before 12 and the point of rear contact 13 corresponding to the locations of said lower surface 10 beginning to rise.

Mieux visible sur la figure 1c du ski 1 en coupe transversale AA, la structure interne du ski est stratifiée. La planche de glisse 5 comprend une couche noyau 14 en matière alvéolaire sur les faces de laquelle sont agencés des couches de renfort 15, 16. De bas en haut sur la figure 1c, la surface inférieure de glissement du ski 10 comporte une semelle de glisse 17, par exemple en polyéthylène, encadrée de deux carres métalliques 18, une couche inférieure de renfort 15, la couche noyau 14, une couche supérieure de renfort 16 et une couche de décor et de protection 19 en surface supérieure 11.Better visible on the figure 1c of ski 1 in cross section AA , the internal structure of the ski is laminated. The gliding board 5 comprises a core layer 14 of cellular material on the faces of which are arranged reinforcing layers 15, 16. From bottom to top on the figure 1c , the lower sliding surface of the ski 10 comprises a gliding sole 17, for example made of polyethylene, framed by two metal edges 18, a lower reinforcing layer 15, the core layer 14, a top reinforcing layer 16 and a layer of decor and protection 19 in upper surface 11.

La couche noyau 14 peut être en matériau alvéolaire et/ou en matériau à base de bois. La matière alvéolaire est par exemple choisie parmi les mousses rigides de matière plastique, tel qu'une mousse de polyuréthane, de polystyrène expansé, de polystyrène extrudé, de PVC ou de polyamides.Core layer 14 may be of cellular material and / or wood-based material. The cellular material is for example chosen from rigid foams of plastic material, such as polyurethane foam, expanded polystyrene, extruded polystyrene, PVC or polyamides.

Les couches de renfort 15, 16 sont avantageusement des couches de matériau composite tels que des fibres (verre, carbone, aramide, ou leur mélanges) imprégnées ou noyées dans une résine (thermoplastique ou thermodurcissable, par exemple de type polyester ou époxy). Les fibres sont par exemple choisies parmi des fibres longues tissées, avec la possibilité de superposer plusieurs tissus (identiques ou différents, avec différentes orientations de fibres) au sein d'une même couche de renfort. On peut également envisager d'autres matériaux de renforts, tels que des métaux (notamment l'aluminium), du bois, ou des matières plastiques à bonnes caractéristiques mécaniques.The reinforcing layers 15, 16 are advantageously layers of composite material such as fibers (glass, carbon, aramid, or mixtures thereof) impregnated or embedded in a resin (thermoplastic or thermosetting, for example of the polyester or epoxy type). The fibers are for example chosen from long woven fibers, with the possibility of superimposing several fabrics (identical or different, with different fiber orientations) within the same reinforcing layer. Other reinforcing materials, such as metals (especially aluminum), wood, or plastics with good mechanical properties, can also be envisaged.

Cette structure stratifiée sandwich permet un très bon rapport entre le poids et la résistance mécanique du ski, notamment du point de vue de sa rigidité en fléchissement.This laminated sandwich structure allows a very good ratio between the weight and the mechanical strength of the ski, particularly from the point of view of its stiffness in bending.

Le ski 1 comporte en outre une lame disposée sur la planche de glisse 5, sur laquelle une fixation de ski correspondante est destinée à être fixée.The ski 1 further comprises a blade disposed on the gliding board 5, on which a corresponding ski binding is intended to be fixed.

Une première partie de la lame est fixée sur la surface supérieure 11 de la planche de glisse 5, en dehors de sa structure proprement dite, dans la zone centrale de montage 2 des fixations 3, 4 de ski.A first part of the blade is fixed on the upper surface 11 of the gliding board 5, outside its actual structure, in the central mounting area 2 of the ski bindings 3, 4.

La première partie s'étend vers une extrémité 6, 8 de la planche de glisse 5, par exemple jusqu'au point de contact avant 12, par une deuxième partie présentant un moyen d'amortissement des vibrations.The first portion extends towards one end 6, 8 of the gliding board 5, for example to the point of contact with the front 12, by a second portion having a vibration damping means.

La deuxième partie est reçue dans un logement correspondant ménagé dans l'extrémité de la planche de glisse. Le moyen d'amortissement prévoit au moins deux zones de contacts amortissants entre la deuxième partie de la lame et le logement correspondant pour amortir les vibrations de la planche de glisse.The second part is received in a corresponding housing formed in the end of the gliding board. The damping means provides for at least two areas of contact damping between the second part of the blade and the corresponding housing to dampen the vibrations of the gliding board.

Le ski peut comporter une lame avant et/ou une lame arrière. Les figures 1a, 1b, 1c, 1d, 1e et 1f représentent un premier mode de réalisation du moyen d'amortissement pour lequel le ski comporte une lame avant 20a et une lame arrière 20b. Ainsi, les vibrations sont amorties aussi bien à l'extrémité avant 6 qu'à l'extrémité arrière 8 du ski 1. En outre, les lames avant et arrière 20a, 20b sont facilement assemblées à la planche de glisse 5 après sa fabrication.The ski may comprise a front blade and / or a rear blade. The Figures 1a, 1b , 1c, 1d , 1e and 1f represent a first embodiment of the damping means for which the ski comprises a front blade 20a and a rear blade 20b. Thus, the vibrations are damped both at the front end 6 and the rear end 8 of the ski 1. In addition, the front and rear blades 20a, 20b are easily assembled to the gliding board 5 after manufacture.

Les lames 20a, 20b peuvent être métalliques, en aluminium ou en acier, ou en matériau composite.The blades 20a, 20b may be metal, aluminum or steel, or composite material.

Mieux visible sur la figure 1e, la lame avant 20a comporte une première partie 21a fixée par une liaison rigide à la planche de glisse 5 dans la zone centrale de montage 2, par exemple, au niveau de la butée 3. La première partie 21a comporte par exemple quatre trous traversants 23 disposés en rectangle qui permettent le passage des vis de serrage correspondantes 24 pour la fixation de la lame 20a à la planche de glisse 5.Better visible on the figure 1e , the front blade 20a has a first portion 21a fixed by a rigid connection to the gliding board 5 in the central mounting area 2, for example, at the stop 3. The first portion 21a comprises for example four through holes 23 disposed in a rectangle which allow the passage of the corresponding clamping screws 24 for fixing the blade 20a to the gliding board 5.

Les trous traversants 23 sont par exemple symétriquement répartis de part et d'autre d'un axe longitudinal N du ski 1. En outre, au moins deux trous 23 peuvent être oblongs avec la dimension la plus large dans le sens longitudinal. Les trous oblongs permettent ainsi d'augmenter la tolérance des dimensions entre les trous 23 pour l'ajustement de la lame à la planche de glisse 5.The through holes 23 are for example symmetrically distributed on either side of a longitudinal axis N of the ski 1. In addition, at least two holes 23 may be oblong with the largest dimension in the longitudinal direction. The oblong holes thus make it possible to increase the tolerance of the dimensions between the holes 23 for the adjustment of the blade to the gliding board 5.

La lame avant 20a présente par exemple une longueur de l'ordre de 80 cm. La première partie 21a présente par exemple une longueur de l'ordre de 30 cm, une largeur un peu inférieure à la largeur totale du ski, par exemple, de l'ordre de 4,5 cm et une épaisseur de l'ordre de 5 mm.The front blade 20a has for example a length of the order of 80 cm. The first part 21a has for example a length of the order of 30 cm, a width slightly less than the total width of the ski, for example, of the order of 4.5 cm and a thickness of about 5 cm. mm.

La première partie 21a s'étend vers l'extrémité avant 6 formant une deuxième partie 22a comportant un moyen d'amortissement des vibrations.The first part 21a extends towards the front end 6 forming a second part 22a comprising a vibration damping means.

La deuxième partie 22a est destinée à être reçue dans un logement 25 prévu à l'extrémité avant 6 de la planche de glisse 5. La deuxième partie 22a présente par exemple une largeur de 2,5 cm.The second portion 22a is intended to be received in a housing 25 provided at the front end 6 of the gliding board 5. The second portion 22a has for example a width of 2.5 cm.

Le logement 25 présente un profil en creux formant un tunnel ou fourreau (voir figure 1c et 1d). Il est par exemple formé sous la couche supérieure de renfort 16 et présente des dimensions égales, légèrement inférieures ou légèrement supérieures aux dimensions de la deuxième partie 22a pour permettre son coulissement lors du montage.The housing 25 has a hollow profile forming a tunnel or sheath (see Figure 1c and 1d ). It is for example formed under the upper reinforcing layer 16 and has equal dimensions, slightly smaller or slightly greater than the dimensions of the second portion 22a to allow its sliding during assembly.

En outre, la couche de noyau 14 de la planche de glisse 5 présente par exemple une entaille centrale 26, au-dessus de la fibre neutre, dans laquelle est agencé le logement 25, de manière à réduire le poids du ski.In addition, the core layer 14 of the gliding board 5 has for example a central notch 26, above the neutral fiber, in which the housing 25 is arranged, so as to reduce the weight of the ski.

On peut prévoir également deux rainures 27 dans la surface supérieure 11 de la planche de glisse 5, de part et d'autre des bordures latérales du logement 25, comme visible sur les figures 1a et 1c. Les rainures 27 permettent d'obtenir une bonne rigidité du ski ainsi qu'un bon maintien de la lame dans le logement 25, tout en lui apportant une certaine souplesse de déformation. En outre, les rainures 27 permettent d'alléger la planche de glisse 5. Par ailleurs, les rainures 27 permettent aux utilisateurs de matérialiser le logement 25 et donc de différencier les skis équipés du moyen d'amortissement.One can also provide two grooves 27 in the upper surface 11 of the gliding board 5, on either side of the side edges of the housing 25, as visible on the figures 1a and 1 C . The grooves 27 provide a good rigidity of the ski and a good retention of the blade in the housing 25, while providing a certain flexibility of deformation. In addition, the grooves 27 can lighten the gliding board 5. Moreover, the grooves 27 allow users to materialize housing 25 and thus to differentiate skis equipped with damping means.

La section de la lame 20a dans une coupe transversale présente par exemple une forme générale rectangulaire (figure 1c). En outre, la section peut être variable. Par exemple, la première partie 21a présente une forme élargie par rapport à la deuxième partie 22a (figure 1e), ce qui permet une meilleure prise pour la fixation de ski 3 correspondante. En outre, la jonction entre la première 21a et la deuxième partie 22a peut présenter une forme douce, par exemple trapézoïdale, pour faciliter l'insertion de la lame 20a dans son logement 35. La lame 20a peut également présenter une butée 37, par exemple formée par une boursouflure de la lame, en amont de la deuxième partie 22a pour guider l'insertion de la deuxième partie 22a dans le logement 35.The section of the blade 20a in a cross-section has for example a generally rectangular shape ( figure 1c ). In addition, the section may be variable. For example, the first portion 21a has an enlarged shape with respect to the second portion 22a ( figure 1e ), which allows a better grip for the corresponding ski binding 3. In addition, the junction between the first 21a and the second portion 22a may have a soft shape, for example trapezoidal, to facilitate the insertion of the blade 20a in its housing 35. The blade 20a may also have a stop 37, for example formed by a blister of the blade, upstream of the second portion 22a to guide the insertion of the second portion 22a into the housing 35.

Les figures 2 et 3 sont des vues similaires à la figure 1c, représentant d'autres formes de réalisation de la planche de glisse 5.The Figures 2 and 3 are views similar to the figure 1c , representing other embodiments of the gliding board 5.

Sur la figure 2, la deuxième partie 22a de la lame 20a est surélevée par rapport à la surface supérieure 11 de la planche de glisse 5. Dans cette variante, la couche de noyau 14 présente la forme générale en trapèze et ne comporte pas d'entaille.On the figure 2 , the second portion 22a of the blade 20a is raised relative to the upper surface 11 of the gliding board 5. In this embodiment, the core layer 14 has the general trapezoidal shape and has no notch.

La planche de glisse 5 de la figure 3 présente une structure similaire à la figure 1c pour laquelle la couche de noyau 14 présente une entaille centrale 26 mais pour laquelle la surface supérieure 11 ne présente pas de rainure.The gliding board 5 of the figure 3 has a similar structure to the figure 1c for which the core layer 14 has a central notch 26 but for which the upper surface 11 does not have a groove.

Le moyen d'amortissement de la deuxième partie 22a comporte trois zones de contacts amortissants avec le logement 25, le long de l'axe longitudinal N du ski 1, formant des moyens de liaison souples longitudinalement espacés.The damping means of the second portion 22a comprises three damping contact zones with the housing 25, along the longitudinal axis N of the ski 1, forming longitudinally spaced flexible connection means.

Dans le premier mode de réalisation, le moyen d'amortissement est formé par trois inserts amortisseurs 28 logés dans trois trous d'insert correspondants 29 ménagés dans la deuxième partie 22a de la lame 20a. Les trois trous d'inserts 29 sont par exemple longitudinalement espacés entre eux d'une distance D1 de l'ordre de 20 cm et espacés de la première partie 21a de la lame 20a d'une distance D2 de l'ordre de 10 cm (figure 1e).In the first embodiment, the damping means is formed by three damping inserts 28 housed in three corresponding insert holes 29 formed in the second portion 22a of the blade 20a. The three inserts holes 29 are for example longitudinally spaced apart by a distance D1 of the order of 20 cm and spaced apart from the first portion 21a of the blade 20a by a distance D2 of the order of 10 cm ( figure 1e ).

Comme on peut le voir en détail sur la figure 1f, chaque insert amortisseur 28 est destiné à coopérer avec une vis de fixation 31 pour fixer de manière souple la lame 20a à la planche de glisse 5. On peut aussi prévoir des rondelles 32 sous les têtes des vis 31 au niveau de la surface supérieure 11 de la planche de glisse 5, comme visible en figure 1a.As can be seen in detail on the figure 1f each damping insert 28 is intended to cooperate with a fixing screw 31 to flexibly fix the blade 20a to the gliding board 5. It is also possible to provide washers 32 under the heads of the screws 31 at the level of the upper surface 11 of the gliding board 5, as visible in figure 1a .

L'insert amortisseur 28 comporte par exemple d'une part, une pièce centrale 33 dans laquelle la vis 31 est vissée, et d'autre part, un matériau amortisseur 34 entourant ladite pièce 33.The damping insert 28 comprises, for example, on the one hand, a central piece 33 in which the screw 31 is screwed, and on the other hand, a damping material 34 surrounding said piece 33.

La pièce 33 est rigide, par exemple en matériau plastique.The piece 33 is rigid, for example plastic material.

Le matériau amortisseur 34 est un matériau souple du type élastique, tel qu'un élastomère. Il présente une épaisseur sensiblement égale à l'épaisseur de la lame 20a de manière à traverser le trou d'insert 29 et présente une largeur comprise entre par exemple 2 et 6 millimètres. Le matériau amortisseur 34 est par exemple collé autour de la pièce centrale 33 pour être inséré ensuite dans le trou d'insert correspondant 29.The damping material 34 is a flexible material of the elastic type, such as an elastomer. It has a thickness substantially equal to the thickness of the blade 20a so as to pass through the insert hole 29 and has a width of between 2 and 6 millimeters for example. The damping material 34 is for example glued around the central piece 33 to then be inserted into the corresponding insert hole 29.

L'insert 28 et le trou d'insert correspondant 29 peuvent présenter une forme allongée, de préférence oblongue, avec une longueur par exemple de l'ordre de 2,5 cm dans le sens longitudinal du ski et une largeur de l'ordre de 3,5 cm. On peut alors disposer deux orifices 30 pour coopérer avec deux vis de fixation 31 dans chaque insert 28 (figure 1e). On pourrait également prévoir d'autres formes de réalisation pour l'insert et le trou d'insert correspondant.The insert 28 and the corresponding insert hole 29 may have an elongate shape, preferably oblong, with a length for example of the order of 2.5 cm in the longitudinal direction of the ski and a width of the order of 3.5 cm. Two orifices 30 can then be arranged to cooperate with two fastening screws 31 in each insert 28 ( figure 1e ). Other embodiments could also be provided for the insert and the corresponding insert hole.

A l'extrémité arrière du ski 8, la lame arrière 20b comporte une première partie 21b fixée à la planche de glisse 5 dans la zone centrale de montage 2 par exemple, au niveau de la talonnière 4 (figure 1e). La première partie 21b s'étend vers l'extrémité arrière 8, par exemple jusqu'au point de contact arrière 13, par une deuxième partie 22b destinée à être reçue dans un logement 25 prévu à l'extrémité arrière 8 de la planche de glisse 5.At the rear end of the ski 8, the rear blade 20b has a first portion 21b fixed to the gliding board 5 in the central mounting area 2, for example, at the heel piece 4 ( figure 1e ). The first part 21b extends towards the rear end 8, for example up to the rear contact point 13, by a second part 22b intended to be received in a housing 25 provided at the rear end 8 of the gliding board. 5.

Le moyen d'amortissement comporte deux zones de contacts amortissants entre la deuxième partie 22b et le logement 25, formés par deux inserts amortisseurs 28, par exemple identiques à ceux disposés dans la lame avant 20a.The damping means comprises two damping contact zones between the second portion 22b and the housing 25, formed by two damping inserts 28, for example identical to those arranged in the front blade 20a.

Les bordures transversales 35a, 35b des premières parties 21a, 21b respectives des lames avant et arrière 20a, 20b peuvent être conformées pour coopérer avec un joint 36 du ski 1 de forme complémentaire intercalé entre lesdites bordures transversales 35a, 35b. La liaison par le joint 36 est réalisée dans la zone centrale de montage 2, entre la butée 3 et la talonnière 4. Le joint 36 est par exemple réalisé en matériau élastomère. Une telle liaison permet notamment de réaliser un bon alignement longitudinal des lames avant et arrière 20a, 20b et permet de réduire les tolérances de positionnement des deux lames.The transverse edges 35a, 35b of the respective first portions 21a, 21b of the front and rear blades 20a, 20b may be shaped to cooperate with a seal 36 of the ski 1 of complementary shape interposed between said transverse edges 35a, 35b. The connection by the seal 36 is made in the central mounting zone 2, between the stop 3 and the heel piece 4. The seal 36 is for example made of elastomeric material. Such a connection makes it possible in particular to achieve a good longitudinal alignment of the front and rear blades 20a, 20b and reduces the positioning tolerances of the two blades.

Sur les figures 1a et 1e, on a représenté des premières parties 21a, 21b dont les bordures transversales 35a, 35b présentent une forme en vaguelette et coopèrent avec un joint 36 de forme complémentaire. On pourrait également envisager d'autres formes complémentaires du joint et des bordures transversales. En outre, la forme du joint peut être prévue pour retenir les lames avant et arrière 20a, 20b, l'une à l'autre et empêcher leur écartement. Par exemple, les bordures transversales des premières parties 21a, 21b, présentent des excroissances ou des creux destinés à coopérer avec des formes complémentaires du joint, telles que les pièces d'un puzzle ou une forme en queue d'aronde (non représentés).On the figures 1a and first first portions 21a, 21b are shown whose transverse edges 35a, 35b have a wavelet shape and cooperate with a seal 36 of complementary shape. Other complementary shapes of the joint and transverse edges could also be envisaged. In addition, the shape of the seal may be provided to retain the front and rear blades 20a, 20b, one to another and prevent their spacing. For example, the transverse edges of the first portions 21a, 21b have protuberances or recesses for cooperating with complementary forms of the joint, such as pieces of a puzzle or dovetail shape (not shown).

Dans une alternative illustrée sur la figure 4, la lame avant 20a et la lame arrière 20b sont formées d'une seule pièce. Dans ce cas, la lame est assemblée à la planche de glisse 5 au cours du procédé de fabrication du ski.In an alternative illustrated on the figure 4 the front blade 20a and the rear blade 20b are formed in one piece. In this case, the blade is assembled to the gliding board 5 during the ski manufacturing process.

Ainsi, en flexion du ski (de l'ordre de 0,1 millimètres), les vibrations de la planche de glisse 5 sont amorties en plusieurs points de contact par les inserts amortisseurs 28. Les vis de fixation 31 et la pièce centrale 33 bougent relativement par rapport aux trous d'inserts correspondants 29, l'élasticité étant produite par le matériau amortisseur 34. La lame s'oppose ainsi à la déformation de la planche de glisse 5 en compression et en traction, les inserts amortisseurs 28 formant des butées élastiques, permettant le mouvement de la planche de glisse 5 par rapport à la lame pour atténuer les vibrations du ski 1 au niveau des fixations.Thus, in flexing of the ski (of the order of 0.1 millimeters), the vibrations of the gliding board 5 are damped at several points of contact by the damping inserts 28. The fastening screws 31 and the central piece 33 move relatively to the corresponding inserts holes 29, the elasticity being produced by the damping material 34. The blade thus opposes the deformation of the gliding board 5 in compression and in tension, the damping inserts 28 forming stops resilient, allowing the movement of the gliding board 5 relative to the blade to attenuate the vibrations of the ski 1 at the fasteners.

Dans un deuxième mode de réalisation, le moyen d'amortissement est formé par le frottement des surfaces externes de la deuxième partie 22a au moins partiellement le long des parois internes du logement correspondant 25. Le frottement forme ainsi une zone de contact amortissant continue entre la deuxième partie de la lame 22a et le logement correspondant 25 pour amortir les vibrations de la planche de glisse 5.In a second embodiment, the damping means is formed by the friction of the outer surfaces of the second portion 22a at least partially along the inner walls of the corresponding housing 25. The friction thus forms a continuous damping contact zone between the second part of the blade 22a and the corresponding housing 25 for damping the vibrations of the gliding board 5.

On a représenté schématiquement plusieurs variantes de réalisation de la lame pour ce deuxième mode de réalisation sur les figures 5a, 5b, 5c et 5d. Comme précédemment, le ski 1 peut comporter une lame avant 20a et/ou une lame arrière 20b. La lame avant 20a et la lame arrière 20b peuvent être assemblées par un joint 36 du ski 1 (figures 5a et 5c) ou ne former qu'une seule pièce (figures 5b et 5d). La section transversale de la lame peut être constante (figures 5c et 5d) ou variable (figures 5a et 5b).Several variants of embodiment of the blade for this second embodiment are shown diagrammatically on the Figures 5a, 5b, 5c and 5d . As previously, the ski 1 may comprise a front blade 20a and / or a rear blade 20b. The front blade 20a and the rear blade 20b can be assembled by a seal 36 of the ski 1 ( Figures 5a and 5c ) or form a single piece ( Figures 5b and 5d ). The cross section of the blade can be constant ( Figures 5c and 5d ) or variable ( Figures 5a and 5b ).

Ainsi, lors de la flexion du ski, la lame se déplace dans le logement, relativement à l'extrémité du ski 6, 8 et est freiné par le frottement de la lame dans le logement correspondant 25, amortissant les vibrations.Thus, during the bending of the ski, the blade moves in the housing relative to the end of the ski 6, 8 and is braked by the friction of the blade in the corresponding housing 25, damping vibrations.

Le frottement peut également être accentué en zones de contacts amortissants, en augmentant la force de serrage de la lame à la planche de glisse 5, par au moins un moyen d'accentuation du frottement.The friction can also be accentuated in zones of damping contact, by increasing the clamping force of the blade to the gliding board 5, by at least one means of accentuation of the friction.

Par exemple, le logement présente une sinuosité, permettant d'augmenter le frottement de la lame à l'endroit de l'ondulation du logement.For example, the housing has a sinuosity, to increase the friction of the blade at the location of the corrugation of the housing.

Dans un autre exemple, la lame est réalisée en acier et le logement comporte au moins un aimant localisé à un point spécifique, permettant d'accentuer le frottement de la lame à l'endroit où un champ magnétique est formé.In another example, the blade is made of steel and the housing comprises at least one magnet located at a specific point, to accentuate the friction of the blade where a magnetic field is formed.

On obtient donc un ski dont le moyen d'amortissement présente plusieurs points de reprise des efforts en flexion, permettant de répartir l'amortissement sur la longueur du ski, de manière continue ou discontinue, tout en permettant une meilleure protection mécanique aux chocs et en restant simple à assembler.A ski is thus obtained whose damping means has several points of recovery of the bending forces, making it possible to distribute the damping over the length of the ski, in a continuous or discontinuous manner, while allowing better mechanical protection against impacts and remaining simple to assemble.

Claims (11)

  1. Ski comprising a gliding board (5) and a blade (20a, 20b) arranged on the gliding board (5), a first part (21a, 21b) of which is fixed to the gliding board (5) in a central zone (2) for mounting the ski bindings (3, 4) and extends towards an end (6, 8) of the gliding board (5) via a second part (22a, 22b) having a vibration-damping means, characterized in that the second part (22a, 22b) is received in a corresponding housing (25) made in said end (6, 8) of the gliding board (5), and in that said damping means provides at least two damping contact zones between said second part (22a, 22b) and the corresponding housing (25) in order to damp the vibrations of the gliding board (5); and in that the damping means includes at least two damping inserts (28) housed in two corresponding insert holes (29) made in said second part (22a, 22b) of said blade (20a, 20b), each damping insert (28) interacting with a fixing screw (31) fixed to the gliding board (5) to damp the vibrations of the ski.
  2. Ski according to Claim 1, characterized in that the damping insert (28) includes, on the one hand, a central piece (33) in which a blind hole (30) is provided and, on the other, a damping material (34) surrounding said piece (33).
  3. Ski according to either of Claims 1 and 2, characterized in that said insert (28) and said corresponding insert hole (29) have an elongate form.
  4. Ski according to Claim 1, characterized in that the damping means is formed by the friction of the outer surfaces of said second part (22a, 22b) at least partially along the inner walls of the corresponding housing (25).
  5. Ski according to Claim 4, characterized in that the housing (25) includes at least one means for accentuation of the friction in the damping contact zone.
  6. Ski according any of the preceding claims, characterized in that it includes a front blade (20a) and a rear blade (20b),
    - the first part (21a) of the front blade (20a) being fixed to the gliding board (5) in said central zone (2) and the second part (22a) of the front blade (20a) being received in a corresponding housing (25) made in the front end (6) of the gliding board (5), and
    - the first part (21b) of the rear blade (20b) being fixed to the gliding board (5) in said central zone (2) and the second part (22b) of the rear blade (20b) being received in a corresponding housing (25) made in the rear end (8) of the gliding board (5).
  7. Ski according to Claim 6, characterized in that the transverse borders (35a, 35b) of the respective first parts (21a, 21b) of the front and rear blades (20a, 20b) are shaped in order to interact with a joint (36) of the ski of complementary shape intercalated between said transverse borders (35a, 35b).
  8. Ski according to Claim 6, characterized in that the front blade and the rear blade (20a, 20b) are formed as a single piece.
  9. Ski according to any of Claims 6 to 8, taken together with any one of Claims 2 to 4, characterized in that the front blade (20a) includes three damping inserts (28), and in that the rear blade (20b) includes two damping inserts (28).
  10. Ski according to any one of the preceding claims, characterized in that the gliding board (5) includes a core layer (14) having a central notch (26) above the neutral fibre (N) of the ski and in which the housing (25) is made.
  11. Ski according to any one of the preceding claims, characterized in that the first part (21a, 21b) has a widened form in relation to the second part (22a, 22b).
EP10000901A 2009-01-30 2010-01-29 Ski including a vibration damping system Not-in-force EP2213339B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0900409A FR2941627B1 (en) 2009-01-30 2009-01-30 SKI HAVING A MEANS OF DAMPING VIBRATIONS

Publications (2)

Publication Number Publication Date
EP2213339A1 EP2213339A1 (en) 2010-08-04
EP2213339B1 true EP2213339B1 (en) 2012-10-10

Family

ID=41050347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000901A Not-in-force EP2213339B1 (en) 2009-01-30 2010-01-29 Ski including a vibration damping system

Country Status (2)

Country Link
EP (1) EP2213339B1 (en)
FR (1) FR2941627B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3048364B1 (en) * 2016-03-04 2019-07-05 Salomon Sas SYSTEM FOR CUSTOMIZING A SNOWBOARD ON SNOW

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675392B1 (en) 1991-04-22 1995-06-23 Salomon Sa DAMPING DEVICE FOR SKIING.
FR2678517B1 (en) * 1991-07-04 1993-10-15 Salomon Sa IMPROVEMENT FOR SKI DAMPING DEVICE.
FR2689411B1 (en) * 1992-04-01 1994-06-03 Salomon Sa SKI COMPRISING A BASE AND A TWO-PART STIFFENER CONNECTED TO THE BASE.
FR2701215B1 (en) * 1993-02-05 1995-04-14 Salomon Sa Improvement for damping device for ski and ski equipped with such a device.
FR2722419B1 (en) * 1994-07-13 1996-09-27 Salomon Sa Societe Anonyme DAMPING DEVICE FOR SKI AND SKI PROVIDED WITH SUCH A DEVICE
FR2741814B1 (en) * 1995-12-04 1998-02-13 Salomon Sa DAMPING DEVICE FOR SLIDING BOARD
AT504800B1 (en) * 2007-02-02 2010-05-15 Atomic Austria Gmbh SCHI OR SNOWBOARD WITH A PLATE-TYPE POWER TRANSMISSION ELEMENT

Also Published As

Publication number Publication date
FR2941627B1 (en) 2012-12-14
FR2941627A1 (en) 2010-08-06
EP2213339A1 (en) 2010-08-04

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