EP1563876B1 - Cross-country ski - Google Patents

Cross-country ski Download PDF

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Publication number
EP1563876B1
EP1563876B1 EP05300059A EP05300059A EP1563876B1 EP 1563876 B1 EP1563876 B1 EP 1563876B1 EP 05300059 A EP05300059 A EP 05300059A EP 05300059 A EP05300059 A EP 05300059A EP 1563876 B1 EP1563876 B1 EP 1563876B1
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EP
European Patent Office
Prior art keywords
bars
ski
crosscountry
complementary means
bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05300059A
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German (de)
French (fr)
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EP1563876A1 (en
Inventor
Pierre Gignoux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skis Rossignol SA
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Skis Rossignol SA
Rossignol SA
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Publication of EP1563876A1 publication Critical patent/EP1563876A1/en
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Publication of EP1563876B1 publication Critical patent/EP1563876B1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/005—Devices preventing skis from slipping back, actuated by the boot

Definitions

  • the invention relates to the field of sliding sports, and more specifically that of cross-country skiing. It is more particularly a new architecture of boards, intended to allow the adjustment of the stiffness of the board according to the user. It thus makes it possible to adapt a ski to different morphologies, and to different types of practice.
  • a cross-country ski is designed on the one hand to optimize the impulses exerted by the skier, and on the other hand to ensure a longest sliding phase outside the impulse phases.
  • the sole of a cross-country ski is strongly arched, and has a central portion, positioned substantially in the area below the shoe, which is commonly called "wax chamber".
  • the sole is covered with a coating or retaining wax that ensures good transmission to restraint efforts when the skier exerts a vertical impulse, and that deforms the ski to flatten the wax of the chamber fart against the snow.
  • curvature imparted to the gliding sole is a very important parameter for optimizing performance. It is therefore essential that this curvature or curvature is preserved to prevent, for example, the wax of the wax chamber from coming into contact with the snow during the sliding phases, when the skier has a weight greater than that for which the mechanical structure of the ski has been designed.
  • the impulses exerted by the skier can have a different duration depending on whether the skier is more or less powerful.
  • FR-A-1 470 094 discloses a ski with variable elasticity with rigid longitudinal benches integrated into the body of the ski.
  • the invention therefore relates to a cross-country ski whose lower face is arched to form a wax chamber, positioned substantially in the area below the shoe of the user.
  • this ski is characterized in that its upper face comprises at least one recess, this or these recesses receiving a rigid longitudinal bar, extending from the back of the wax chamber to the front from this room.
  • One of the ends of each bar abuts on a fixed element relative to the ski, while the complementary means, cooperating with their ends of each bar are provided to ensure the setting of adjustable compression of each of the bars.
  • the ski incorporates means that adjust the stiffness and therefore the camber of the ski under a variable load. It is thus possible to guard against a risk of contact of the wax chamber with the snow, especially when the skier is resting on both skis during the practice of the alternative step.
  • the means for compressing the bars can act either concomitantly on the two bars, or independently on each of the bars.
  • the means for compressing the bars may comprise an element which is screwed parallel to the bar and which cooperates with the end of the bar or bars.
  • Compression can also be achieved by means of a mechanism comprising an articulated compass, the ends of which cooperate with the free ends of the bars, the point of articulation of the compass being fixed to it relative to the ski.
  • the compression can be obtained by a mechanism including an eccentric cam cooperating with the ends of the bars.
  • This mechanism can be replaced by another mechanism having sloping faces, whose slope is not perpendicular to the direction of the bars, and which cooperate with complementary surfaces integral bars. These complementary faces may be the ends of the bars themselves, or else elements attached to the ends of the bar.
  • compression means may comprise a set of spacers of different dimensions, one of which is interposed between a fixed point of the ski at the end of the bars.
  • the adjustment of the compression of each bar is effected by the establishment of a wedge of appropriate size.
  • this plate has a protruding zone under its face lower, this protruding zone coming into contact with the upper face of the board between the bars.
  • the elements located at the ends of the characteristic bars can cooperate with the body or bodies of the binding of the boot on the ski.
  • attachment member is meant either the attachment device of the tip of the shoe, or a guide element of the rear part of the shoe, having ribs and / or grooves cooperating with the sole of the shoe.
  • the fixed element forming a stop of the characteristic bars can serve as a support for a member of the fastener.
  • it is the complementary means, allowing the compression of the bars, which serve as a support for the fastener member.
  • the fixed element or the complementary means may have a form of slide, allowing the longitudinal adjustment of the position of the fastener member.
  • one of the fastener members may be slidably mounted on the longitudinal bar for the purpose of adjusting its longitudinal position.
  • the invention relates to a cross-country ski equipped with means for adjusting its stiffness, and therefore its hanger.
  • a cross-country ski (1) has in known manner, in its central part an area (2) called "wax chamber".
  • the sole of this wax chamber (2) is coated with a layer of retaining wax, and therefore must not come into contact with the snow in the sliding phases, but only in the impulse phases.
  • This wax chamber extends slightly forward and back of the zone in which the shoe is located.
  • the sole (3) has sliding zones (4), coated with a wax of different nature, facilitating sliding.
  • the ski comprises one or more recesses (10), made on its upper face (11), and forming channels receiving longitudinal bars (12, 13).
  • the number of these recesses can be variable, and it is chosen according to the additional stiffness that one wishes to confer on the ski.
  • this number of recesses is equal to two, in particular for questions of mechanical stability, and also of size, that is to say to thus allow the establishment of the fixing plate.
  • the recesses or channels extend over a length of the order of one meter.
  • these channels (10) are of a depth substantially corresponding to half the thickness of the bars they accommodate (12, 13), but this depth can be adapted in particular to the size of the bars.
  • these bars (12, 13) have a cylindrical sectional shape, but other variants can be envisaged without departing from the scope of the invention.
  • These bars may be solid or hollow depending on the material that constitutes them, as long as they have sufficient stiffness.
  • Maintaining these bars inside the characteristic recesses is at the front at a stop (16) which may advantageously comprise two housings within which are inserted the front ends (17) of the bars. At the median level, the bars are held inside the characteristic channels (10) by the fixing plate (15).
  • the ends (18) of the bars are held by guide means (20) which also provide in accordance with the invention the compression of the bars.
  • guide means (20) which also provide in accordance with the invention the compression of the bars.
  • FIG. figure 4 which comprises tubular clevises (21) receiving the rear ends of the bars.
  • These ends (18) are threaded to cooperate with a thread made to inside the clevises (21).
  • a screwthread (23) makes it possible to ensure the relative displacement of the end (18) with respect to the yokes (21), and therefore with respect to the ski. In this case, the compression setting of each bar is done independently.
  • FIG. 5 An illustrated variant to the figure 5 allows to ensure the simultaneous adjustment of the setting in compression.
  • the ends (18) of the bars and the yoke (25) are smooth.
  • the two bars (12, 13) are coupled by a connecting piece (26) having pins (27) inserted inside a housing (28) formed at the end of the bars or in the bar even in the case where it is tubular.
  • This connecting piece (26) comprises a screw (30) engaged in the central part (31) of the yoke (25), so that the screwing makes it possible simultaneously to compress the two bars (12, 13). ).
  • the mechanism illustrated in figure 6 comprises two branches (40, 41) articulated with respect to each other and with respect to a fixed point (42) on the ski.
  • the angle between these two bars (40, 41) can be adjusted by means of a screw (43) for example.
  • the screwing action changes the distance, in the longitudinal direction of the ski, between the point of articulation (42) and the ends (44, 45) of the branches.
  • These branches are extended by articulated links (46,47), whose swivel ends cooperate with the ends of the bars (12, 13).
  • FIG. figure 8 Other variants can be made and in particular that illustrated in FIG. figure 8 wherein the rear end (18) of the bar (12) engages an eccentric cam (60).
  • This eccentric cam (60) can pivot about a fixed axis relative to the ski so that its rotation pushes the end of the bar forward, and thus causes the compression of the bar.
  • Such a mechanism (70) comprises a piece (71) in which are inserted the rear ends (18) of the bars.
  • This intermediate piece (71) is covered by a fixed cover (72) relative to the ski, in which can move a wheel (73).
  • the upper part (74) of the wheel (73) is circular, while the lower part (75) of this wheel is eccentric relative to the axis of rotation (76) of the wheel relative to the cover (72).
  • This portion (75) forms an eccentric cam which cooperates with a housing (78) formed in the intermediate piece, so that the rotation of the wheel (73) causes a displacement in the longitudinal direction of the intermediate piece (71), and therefore the compression of the bars.
  • FIG. figure 10 A similar result can be obtained with a beveled wedge system as illustrated in FIG. figure 10 .
  • the rear ends (18) of the bars receive a first shim (80) whose rear face (81) is not perpendicular to the axis of the ski.
  • This first shim (80) cooperates with a second shim (83) having a front face (84) also inclined.
  • This shim (83) has a transverse translation capacity relative to the ski, via a mounting piece (85) integral with the upper face of the ski.
  • the action on the screw (86) allows a transverse displacement of the shim (83), and thus the exercise of the longitudinal forces on the first shim (80).
  • FIG. figure 11 Other variants may be implemented, in particular that illustrated in FIG. figure 11 in which the rear ends (18) of the bars come to chase each other each in a housing (91) in a fixed part (90) relative to the ski.
  • This piece (90) has a lateral opening (92).
  • This opening can receive shims (93) of variable size.
  • the front face (94) of these wedges (93) comes into contact with the rear ends of the bars (18), thus putting them in a state of compression which is thus variable along the width of the shim (93).
  • the implementation of these wedges (93) is done by ensuring manually or mechanically the cambering of the ski. we can provide means to prevent the wedge from escaping unexpectedly in the case where the ski marries a very important camber. It is also possible to provide reinforcements that prevent the end (18) of the bars (12, 13) from punching the shims.
  • the bars (13) are mounted in two recesses (101), and are compressed between firstly a first fixed element (102) and a second fixed element (103) inside which the ends are screwed ( 18) bars.
  • the first fixed element (102) forming a stopper receives on its upper face the rear member (105) of the binding, which has ribs (106) for cooperation with the sole of the boot.
  • This rear member (105) may be made in one piece as illustrated schematically, or it may consist of several assembled parts, one cooperating directly with the first fixed element (102), the other having the guide ribs ( 106).
  • the rear member (105) cooperates with the fixed member (102) by a slide mechanism (108), allowing its longitudinal adjustment to account for the size of the user.
  • Locking of the rear member (105) on the fixed member (102) can be obtained by means of locking means accessible through the openings (107).
  • the front fixed element (103) also comprises a slider shape for adjusting the position of the base (110) of the fastener member having the hooking mechanism of the front end of the shoe (not shown).
  • the adjustment position can be indexed by means passing through the opening (111).
  • the upper part (not shown) comprising the hooking mechanism is fixed on the base (110) at the threads (113).
  • the rear member (120) of the binding comprising the ribs (121) is mounted with a portion (122) which rests directly on the upper face (123) of the ski, and a portion (124) which extends to the interior of the recess (125) receiving the characteristic bar (13).
  • This bar is shown only over part of its length, between the holding struts (126).
  • the bar (13) passes through the portion (124) present in the recess (125) so that it retains the rear member (121) on the ski.
  • a mechanical indexing mechanism may be provided to prevent longitudinal displacement of the rear member (121) of the attachment, and even allow its adjustment in longitudinal position.
  • the invention is not limited solely to the illustrated embodiments, particularly as regards the location of the adjustment means at the rear level of the ski. These adjustment means can of course be found at the front of the board without departing from the scope of the invention. It follows from the foregoing that the invention makes it possible to easily adjust the stiffness of the ski, in order to maintain an optimized camber with respect to the weight of the skier and his type of practice. This greatly limits the risk of the chamber coming into contact with the snow during the sliding phases.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Golf Clubs (AREA)
  • Toys (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The skiing has recesses forming channels to receive longitudinal bars (12, 13) extending from rear part of a chamber with ski wax (2) till its front part. The bars are held at the level of a stop (16) that includes two housings in which front ends (17) of the bars are inserted. Rear ends (18) of the bars are maintained by a guiding unit (20) that permits compression of the bars.

Description

Domaine techniqueTechnical area

L'invention se rattache au domaine des sports de glisse, et plus précisément celui du ski de fond. Elle vise plus particulièrement une nouvelle architecture de planches, destinée à permettre le réglage de la raideur de la planche en fonction de l'utilisateur. Elle permet donc d'adapter un ski à différentes morphologies, et à différents types de pratique.The invention relates to the field of sliding sports, and more specifically that of cross-country skiing. It is more particularly a new architecture of boards, intended to allow the adjustment of the stiffness of the board according to the user. It thus makes it possible to adapt a ski to different morphologies, and to different types of practice.

Techniques antérieuresPrevious techniques

De façon générale, un ski de fond est conçu pour d'une part, optimiser des impulsions exercées par le skieur, et d'autre part assurer une phase de glisse la plus longue en dehors des phases d'impulsion. C'est pourquoi la semelle d'un ski de fond est fortement cambrée, et possède une partie centrale, positionnée sensiblement dans la zone située en-dessous de la chaussure, qui est couramment appelée "chambre à fart". Dans cette chambre à fart, la semelle est recouverte d'un revêtement ou fart de retenue qui assure une bonne transmission à des efforts de retenue lorsque le skieur exerce une impulsion verticale, et qu'il déforme le ski pour plaquer le fart de la chambre à fart contre la neige.In general, a cross-country ski is designed on the one hand to optimize the impulses exerted by the skier, and on the other hand to ensure a longest sliding phase outside the impulse phases. This is why the sole of a cross-country ski is strongly arched, and has a central portion, positioned substantially in the area below the shoe, which is commonly called "wax chamber". In this wax chamber, the sole is covered with a coating or retaining wax that ensures good transmission to restraint efforts when the skier exerts a vertical impulse, and that deforms the ski to flatten the wax of the chamber fart against the snow.

En dehors de ces phases d'impulsion, seules les parties de la semelle situées plus en avant et plus en arrière de la chambre à fart sont au contact de la neige, ce qui permet de tirer profit de caractéristiques de glisse conférées par le fart de glisse qui les recouvrent.Apart from these impulse phases, only the parts of the sole located further forward and further back of the wax chamber are in contact with the snow, which makes it possible to take advantage of sliding characteristics conferred by the wax of slide that covers them.

On conçoit donc que la courbure conférée à la semelle de glisse est un paramètre très important pour l'optimisation des performances. Il est donc essentiel que cette courbure ou ce galbe soit conservé pour éviter par exemple que le fart de retenue de la chambre à fart ne vienne au contact de la neige pendant les phases de glisse, lorsque le skieur possède un poids supérieur à celui pour lequel la structure mécanique du ski a été conçue.It is therefore conceivable that the curvature imparted to the gliding sole is a very important parameter for optimizing performance. It is therefore essential that this curvature or curvature is preserved to prevent, for example, the wax of the wax chamber from coming into contact with the snow during the sliding phases, when the skier has a weight greater than that for which the mechanical structure of the ski has been designed.

On conçoit également que les impulsions exercées par le skieur peuvent avoir une durée différente selon que le skieur est plus ou moins puissant. Ainsi, le besoin se fait sentir de pouvoir adapter la capacité de déformation du ski au type de pratique et de technique employés, ainsi que le gabarit du skieur.It is also understood that the impulses exerted by the skier can have a different duration depending on whether the skier is more or less powerful. Thus, there is a need to be able to adapt the deformability of the ski to the type of practice and technique used, as well as the skier's jig.

FR-A-1 470 094 divulgue un ski à élasticité variable avec des bancs longitudinales rigides intégrées dans le corp du ski. FR-A-1 470 094 discloses a ski with variable elasticity with rigid longitudinal benches integrated into the body of the ski.

Exposé de l'inventionPresentation of the invention

L'invention concerne donc un ski de fond dont la face inférieure est cambrée pour constituer une chambre à fart, positionnée sensiblement dans la zone située sous la chaussure de l'utilisateur.The invention therefore relates to a cross-country ski whose lower face is arched to form a wax chamber, positioned substantially in the area below the shoe of the user.

Conformément à l'invention, ce ski se caractérise en ce que sa face supérieure comporte au moins un évidement, ce ou ces évidements recevant une barre longitudinale rigide, s'étendant depuis l'arrière de la chambre à fart jusqu'à l'avant de cette chambre. Une des extrémités de chaque barre vient en butée sur un élément fixe par rapport au ski, tandis que les moyens complémentaires, coopérant avec leurs extrémités de chaque barre sont prévus pour assurer la mise en compression réglable de chacune des barres.According to the invention, this ski is characterized in that its upper face comprises at least one recess, this or these recesses receiving a rigid longitudinal bar, extending from the back of the wax chamber to the front from this room. One of the ends of each bar abuts on a fixed element relative to the ski, while the complementary means, cooperating with their ends of each bar are provided to ensure the setting of adjustable compression of each of the bars.

Autrement dit, le ski intègre des moyens qui permettent de régler la raideur et donc le cambre du ski sous une charge variable. Il est ainsi possible de se prémunir contre un risque de contact de la chambre à fart avec la neige, notamment lorsque le skieur est en appui sur les deux skis lors de la pratique du pas alternatif.In other words, the ski incorporates means that adjust the stiffness and therefore the camber of the ski under a variable load. It is thus possible to guard against a risk of contact of the wax chamber with the snow, especially when the skier is resting on both skis during the practice of the alternative step.

Ainsi, lorsqu'il est nécessaire de conserver un cambre donné pour une charge supérieure, la ou les barres sont mises dans un état de compression supérieure, de manière à supporter des efforts plus importants.Thus, when it is necessary to maintain a given camber for a higher load, the bar or bars are put in a state of greater compression, so as to withstand greater efforts.

En pratique, des moyens d'architecture très variés peuvent être employés pour réaliser cette mise en compression.In practice, very varied architectural means can be used to achieve this compression setting.

On notera tout d'abord que les moyens de mise en compression des barres peuvent agir soit concomitamment sur les deux barres, soit indépendamment sur chacune des barres.It will be noted first of all that the means for compressing the bars can act either concomitantly on the two bars, or independently on each of the bars.

Selon une variante de réalisation, les moyens de mise en compression des barres peuvent comporter un élément se vissant parallèlement à la barre, et qui coopère avec l'extrémité de la ou des barres.According to an alternative embodiment, the means for compressing the bars may comprise an element which is screwed parallel to the bar and which cooperates with the end of the bar or bars.

La mise en compression peut également s'obtenir au moyen d'un mécanisme comportant un compas articulé, dont les extrémités coopèrent avec les extrémités libres des barres, le point d'articulation du compas étant lui fixe par rapport au ski.Compression can also be achieved by means of a mechanism comprising an articulated compass, the ends of which cooperate with the free ends of the bars, the point of articulation of the compass being fixed to it relative to the ski.

Dans une autre variante de réalisation, la compression peut s'obtenir par un mécanisme incluant une came à excentrique coopérant avec les extrémités des barres. Ce mécanisme peut être remplacé par un autre mécanisme comportant des faces pentues, dont la pente est non perpendiculaire à la direction des barres, et qui coopèrent avec des surfaces complémentaires solidaires des barres. Ces faces complémentaires peuvent être les extrémités des barres elles-mêmes, ou bien encore des éléments rapportés sur les extrémités de barre.In another alternative embodiment, the compression can be obtained by a mechanism including an eccentric cam cooperating with the ends of the bars. This mechanism can be replaced by another mechanism having sloping faces, whose slope is not perpendicular to the direction of the bars, and which cooperate with complementary surfaces integral bars. These complementary faces may be the ends of the bars themselves, or else elements attached to the ends of the bar.

Dans l'ensemble, l'emploi d'outil simple, tel qu'un tournevis, permet de régler de manière aisée la mise en compression des barres.Overall, the use of a simple tool, such as a screwdriver, makes it easy to adjust the compression of the bars.

Dans d'autres variantes d'exécution, des moyens de mise en compression peuvent comporter un jeu de cales de dimensions différentes dont une est interposée entre un point fixe du ski à l'extrémité des barres. Autrement dit, dans ce cas, le réglage de la mise en compression de chaque barre s'effectue par la mise en place d'une cale de dimension appropriée.In other alternative embodiments, compression means may comprise a set of spacers of different dimensions, one of which is interposed between a fixed point of the ski at the end of the bars. In other words, in this case, the adjustment of the compression of each bar is effected by the establishment of a wedge of appropriate size.

La forme des différentes barres et des évidements les recevant permet la mise en place d'une plaque de fixation de la chaussure, qui recouvre les barres. Avantageusement, cette plaque comporte une zone en excroissance sous sa face inférieure, cette zone en excroissance venant au contact de la face supérieure de la planche entre les barres.The shape of the various bars and recesses receiving them allows the establishment of a fastening plate of the shoe, which covers the bars. Advantageously, this plate has a protruding zone under its face lower, this protruding zone coming into contact with the upper face of the board between the bars.

En pratique, les éléments situés aux extrémités des barres caractéristiques peuvent coopérer avec le ou les organes de la fixation de la chaussure sur le ski. Par organe de la fixation, on entend soit le dispositif d'accrochage de la pointe de la chaussure, soit un élément de guidage de la partie arrière de la chaussure, présentant des nervures et/ou rainures coopérant avec la semelle de la chaussure.
Ainsi, l'élément fixe formant butée des barres caractéristiques peut servir de support à un organe de la fixation. On peut aussi prévoir que ce sont les moyens complémentaires, permettant la mise en compression des barres, qui servent de support à l'organe de la fixation.In practice, the elements located at the ends of the characteristic bars can cooperate with the body or bodies of the binding of the boot on the ski. By attachment member is meant either the attachment device of the tip of the shoe, or a guide element of the rear part of the shoe, having ribs and / or grooves cooperating with the sole of the shoe.
Thus, the fixed element forming a stop of the characteristic bars can serve as a support for a member of the fastener. One can also provide that it is the complementary means, allowing the compression of the bars, which serve as a support for the fastener member.

Avantageusement en pratique, l'élément fixe ou les moyens complémentaires peuvent présenter une forme de glissière, autorisant le réglage longitudinal de la position de l'organe de la fixation.Advantageously in practice, the fixed element or the complementary means may have a form of slide, allowing the longitudinal adjustment of the position of the fastener member.

En variante, un des organes de la fixation peut être monté de manière à pouvoir coulisser sur la barre longitudinale, dans un but de réglage de sa position longitudinale.Alternatively, one of the fastener members may be slidably mounted on the longitudinal bar for the purpose of adjusting its longitudinal position.

Description sommaire des figuresBrief description of the figures

La manière de réaliser l'invention ainsi que les avantages qui en découlent ressortiront bien de la description des modes de réalisation qui suivent, à l'appui des figures annexées dans lesquelles :

  • La figure 1 est une vue en perspective sommaire d'un ski conforme à l'invention.
  • La figure 2 est une vue en coupe longitudinale le long d'un évidement caractéristique.
  • La figure 3 est une coupe transversale du ski au niveau de la chambre à fart.
  • La figure 4 est une vue de détail en perspective sommaire d'un mode de réalisation des moyens de réglage en compression des barres caractéristiques.
  • Les figures 5, 6 et 7 sont des vues de variantes de réalisation des moyens de réglage de la compression.
  • La figure 8 est une vue de côté d'un autre mode de réalisation des moyens de mise en compression.
  • La figure 9 est une vue éclatée d'une variante de réalisation des moyens de compression.
  • La figure 10 est une vue de dessus d'une autre variante de réalisation des moyens de compression.
  • La figure 11 est une vue en perspective sommaire d'un autre mode de réalisation des moyens de compression.
  • La figure 12 est une vue en perspective sommaire de la portion centrale d'un ski selon une variante de réalisation dans laquelle la fixation coopère avec les éléments de mise en compression des barres caractéristiques.
  • La figure 13 est une vue en perspective sommaire de la portion centrale d'un ski incluant un organe de la fixation selon une variante d'exécution.
The manner of carrying out the invention as well as the advantages which result therefrom will emerge clearly from the description of the embodiments which follow, in support of the appended figures in which:
  • The figure 1 is a summary perspective view of a ski according to the invention.
  • The figure 2 is a longitudinal sectional view along a characteristic recess.
  • The figure 3 is a cross section of the ski at the wax chamber.
  • The figure 4 is a detailed perspective perspective view of one embodiment of the characteristic bar compression setting means.
  • The Figures 5, 6 and 7 are views of alternative embodiments of the compression adjustment means.
  • The figure 8 is a side view of another embodiment of the compression means.
  • The figure 9 is an exploded view of an alternative embodiment of the compression means.
  • The figure 10 is a top view of another alternative embodiment of the compression means.
  • The figure 11 is a brief perspective view of another embodiment of the compression means.
  • The figure 12 is a summary perspective view of the central portion of a ski according to an alternative embodiment in which the attachment cooperates with the compression elements of the characteristic bars.
  • The figure 13 is a brief perspective view of the central portion of a ski including a fastener member according to an alternative embodiment.

Manière de réaliser l'inventionWay of realizing the invention

Comme déjà évoqué, l'invention concerne un ski de fond équipé de moyens permettant de régler sa raideur, et donc son cintre.As already mentioned, the invention relates to a cross-country ski equipped with means for adjusting its stiffness, and therefore its hanger.

Plus précisément, et comme illustré à la figure 1, un ski de fond (1) possède de manière connue, dans sa partie centrale une zone (2) appelée "chambre à fart". La semelle de cette chambre à fart (2) est revêtue d'une couche de fart de retenue, et ne doit donc pas venir au contact de la neige dans les phases de glisse, mais uniquement dans les phases d'impulsion. Cette chambre à fart s'étend légèrement en avant et en arrière de la zone dans laquelle est implantée la chaussure. En avant et en arrière de cette chambre à fart (2), la semelle (3) comporte des zones de glisse (4), revêtue d'un fart de nature différente, facilitant la glisse.More specifically, and as illustrated in figure 1 , a cross-country ski (1) has in known manner, in its central part an area (2) called "wax chamber". The sole of this wax chamber (2) is coated with a layer of retaining wax, and therefore must not come into contact with the snow in the sliding phases, but only in the impulse phases. This wax chamber extends slightly forward and back of the zone in which the shoe is located. In front of and behind this wax chamber (2), the sole (3) has sliding zones (4), coated with a wax of different nature, facilitating sliding.

Conformément à l'invention, le ski comporte un ou plusieurs évidements (10), réalisés sur sa face supérieure (11), et formant des canaux recevant des barres longitudinales (12, 13). Le nombre de ces évidements peut être variable, et il est choisi en fonction de la raideur supplémentaire que l'on souhaite conférer au ski.According to the invention, the ski comprises one or more recesses (10), made on its upper face (11), and forming channels receiving longitudinal bars (12, 13). The number of these recesses can be variable, and it is chosen according to the additional stiffness that one wishes to confer on the ski.

De préférence, ce nombre d'évidements est égal à deux, notamment pour des questions de stabilité mécanique, et également d'encombrement, c'est-à-dire pour permettre ainsi la mise en place de la plaque de fixation.Preferably, this number of recesses is equal to two, in particular for questions of mechanical stability, and also of size, that is to say to thus allow the establishment of the fixing plate.

Ainsi, comme illustré à la figure 2, les évidements ou canaux s'étendent sur une longueur de l'ordre du mètre. Dans la forme illustrée, ces canaux (10) sont d'une profondeur correspondant sensiblement à la moitié de l'épaisseur des barres qu'elles accueillent (12, 13), mais cette profondeur peut être adaptée notamment à la taille des barres.Thus, as illustrated in figure 2 the recesses or channels extend over a length of the order of one meter. In the form shown, these channels (10) are of a depth substantially corresponding to half the thickness of the bars they accommodate (12, 13), but this depth can be adapted in particular to the size of the bars.

Dans la forme illustrée, ces barres (12, 13) présentent une forme de section cylindrique, mais d'autres variantes peuvent être envisagées sans sortir du cadre de l'invention. Ces barres peuvent être pleines ou creuses en fonction du matériau qui les constitue, dès lors qu'elles possèdent une raideur suffisante.In the form shown, these bars (12, 13) have a cylindrical sectional shape, but other variants can be envisaged without departing from the scope of the invention. These bars may be solid or hollow depending on the material that constitutes them, as long as they have sufficient stiffness.

Le maintien de ces barres à l'intérieur des évidements caractéristiques se fait à l'avant au niveau d'une butée (16) qui peut avantageusement comporter deux logements à l'intérieur desquels sont insérés les extrémités avant (17) des barres. Au niveau médian, les barres sont maintenues à l'intérieur des canaux caractéristiques (10) par la plaque de fixation (15).Maintaining these bars inside the characteristic recesses is at the front at a stop (16) which may advantageously comprise two housings within which are inserted the front ends (17) of the bars. At the median level, the bars are held inside the characteristic channels (10) by the fixing plate (15).

Au niveau arrière, les extrémités (18) des barres sont maintenues par des moyens de guidage (20) qui assurent également conformément à l'invention la mise en compression des barres. De multiples variantes peuvent être envisagées pour obtenir cette mise en compression, et notamment celle illustré à la figure 4 qui comporte des chapes tubulaires (21) recevant les extrémités arrières des barres. Ces extrémités (18) sont filetées pour coopérer avec un taraudage réalisé à l'intérieur des chapes (21). Une empreinte de vissage (23) permet d'assurer le déplacement relatif de l'extrémité (18) par rapport aux chapes (21), et donc par rapport au ski. Dans ce cas, le réglage de compression de chaque barre se fait indépendamment.At the rear, the ends (18) of the bars are held by guide means (20) which also provide in accordance with the invention the compression of the bars. Multiple variants can be envisaged for obtaining this compression, and in particular that illustrated in FIG. figure 4 which comprises tubular clevises (21) receiving the rear ends of the bars. These ends (18) are threaded to cooperate with a thread made to inside the clevises (21). A screwthread (23) makes it possible to ensure the relative displacement of the end (18) with respect to the yokes (21), and therefore with respect to the ski. In this case, the compression setting of each bar is done independently.

Une variante illustrée à la figure 5 permet d'assurer le réglage simultané de la mise en compression. Dans ce cas, les extrémités (18) des barres et la chape (25) sont lisses. Les deux barres (12, 13) sont couplées par une pièce de liaison (26) comportant des ergots (27) s'insérant à l'intérieur d'un logement (28) formé à l'extrémité des barres ou dans la barre elle-même dans le cas où elle est tubulaire. Cette pièce de liaison (26) comporte une vis (30) en prise dans la partie centrale (31) de la chape (25), de sorte que le vissage permet d'assurer simultanément la mise en compression des deux barres (12, 13).An illustrated variant to the figure 5 allows to ensure the simultaneous adjustment of the setting in compression. In this case, the ends (18) of the bars and the yoke (25) are smooth. The two bars (12, 13) are coupled by a connecting piece (26) having pins (27) inserted inside a housing (28) formed at the end of the bars or in the bar even in the case where it is tubular. This connecting piece (26) comprises a screw (30) engaged in the central part (31) of the yoke (25), so that the screwing makes it possible simultaneously to compress the two bars (12, 13). ).

D'autres variantes peuvent être envisagées, notamment au moyen de système de type compas.Other variants may be envisaged, in particular by means of a compass type system.

Ainsi, le mécanisme illustré à la figure 6 comporte deux branches(40, 41) articulées l'une par rapport à l'autre et par rapport à un point fixe (42) sur le ski. L'angle entre ces deux barres (40, 41) peut être réglé au moyen d'une vis (43) par exemple.Thus, the mechanism illustrated in figure 6 comprises two branches (40, 41) articulated with respect to each other and with respect to a fixed point (42) on the ski. The angle between these two bars (40, 41) can be adjusted by means of a screw (43) for example.

L'action de vissage modifie la distance, dans le sens longitudinal du ski, entre le point d'articulation (42) et les extrémités (44, 45) des branches. Ces branches se prolongent par des biellettes articulées (46,47), dont les extrémités rotulées coopèrent avec les extrémités des barres (12, 13).The screwing action changes the distance, in the longitudinal direction of the ski, between the point of articulation (42) and the ends (44, 45) of the branches. These branches are extended by articulated links (46,47), whose swivel ends cooperate with the ends of the bars (12, 13).

Une variante de réalisation est illustrée à la figure 7 dans laquelle les branches des compas (50, 51) possèdent des surfaces inclinées (53) venant au contact des extrémités des barres (12, 13). Le déplacement des deux branches (50, 51) provoque le déplacement du point de contact (54) entre ces surfaces pentues (53) et les barres, et donc la mise en compression réglable des barres.An alternative embodiment is illustrated in the figure 7 wherein the legs of the compasses (50, 51) have inclined surfaces (53) engaging the ends of the bars (12, 13). The displacement of the two branches (50, 51) causes the displacement of the point of contact (54) between these sloping surfaces (53) and the bars, and thus the setting in adjustable compression of the bars.

D'autres variantes peuvent être réalisées et notamment celle illustrée à la figure 8, dans laquelle l'extrémité arrière (18) de la barre (12) vient au contact d'une came à excentrique (60). Cette came excentrique (60) peut pivoter autour d'un axe fixe par rapport au ski de telle sorte que sa rotation repousse l'extrémité de la barre vers l'avant, et provoque donc la mise en compression de la barre.Other variants can be made and in particular that illustrated in FIG. figure 8 wherein the rear end (18) of the bar (12) engages an eccentric cam (60). This eccentric cam (60) can pivot about a fixed axis relative to the ski so that its rotation pushes the end of the bar forward, and thus causes the compression of the bar.

Un système analogue peut être mis en place comme illustré à la figure 9. Un tel mécanisme (70) comporte une pièce (71) dans laquelle viennent se ficher les extrémités arrières (18) des barres. Cette pièce (71) intermédiaire est recouverte par un capot fixe (72) par rapport au ski, dans lequel peut se déplacer une mollette (73). La partie supérieure (74) de la mollette (73) est circulaire, tandis que la partie inférieure (75) de cette mollette est excentrée par rapport à l'axe de rotation (76) de la mollette par rapport au capot (72). Cette partie (75) forme une came excentrique qui coopère avec un logement (78) formé dans la pièce intermédiaire, de telle sorte que la rotation de la mollette (73) provoque un déplacement dans le sens longitudinal de la pièce intermédiaire (71), et donc la mise en compression des barres.A similar system can be set up as illustrated in figure 9 . Such a mechanism (70) comprises a piece (71) in which are inserted the rear ends (18) of the bars. This intermediate piece (71) is covered by a fixed cover (72) relative to the ski, in which can move a wheel (73). The upper part (74) of the wheel (73) is circular, while the lower part (75) of this wheel is eccentric relative to the axis of rotation (76) of the wheel relative to the cover (72). This portion (75) forms an eccentric cam which cooperates with a housing (78) formed in the intermediate piece, so that the rotation of the wheel (73) causes a displacement in the longitudinal direction of the intermediate piece (71), and therefore the compression of the bars.

Un résultat similaire peut être obtenu avec un système de cales biseautées comme illustrée à la figure 10. Dans ce cas, les extrémités arrières (18) des barres reçoivent une première cale (80) dont la face arrière (81) est non perpendiculaire à l'axe du ski. Cette première cale (80) coopère avec une seconde cale (83) comportant une face avant (84) également inclinée.A similar result can be obtained with a beveled wedge system as illustrated in FIG. figure 10 . In this case, the rear ends (18) of the bars receive a first shim (80) whose rear face (81) is not perpendicular to the axis of the ski. This first shim (80) cooperates with a second shim (83) having a front face (84) also inclined.

Cette cale (83) présente une capacité de translation transversale par rapport au ski, par l'intermédiaire d'une pièce de montage (85) solidaire de la face supérieure du ski. L'action sur la vis (86) permet un déplacement transversal de la cale (83), et donc l'exercice des efforts longitudinaux sur la première cale (80).This shim (83) has a transverse translation capacity relative to the ski, via a mounting piece (85) integral with the upper face of the ski. The action on the screw (86) allows a transverse displacement of the shim (83), and thus the exercise of the longitudinal forces on the first shim (80).

D'autres variantes peuvent être mises en oeuvre, notamment celle illustrée à la figure 11 dans laquelle les extrémités arrières (18) des barres viennent s'enchasser chacune dans un logement (91) dans une pièce fixe (90) par rapport au ski. Cette pièce (90) comporte une ouverture latérale (92). Cette ouverture peut recevoir des cales (93) de dimension variable. La face avant (94) de ces cales (93) vient au contact des extrémités arrières des barres (18), mettant donc ces dernières dans un état de compression qui est ainsi variable selon la largeur de la cale (93). La mise en place de ces cales (93) se fait en assurant manuellement ou de manière mécanisée le cambrage du ski. on peut prévoir des moyens pour éviter que la cale ne s'échappe de façon inopinée dans le cas où le ski épouse un cambre très important. On peut également prévoir des renforts qui évitent que l'extrémité (18) des barres (12,13) ne poinçonnent les cales .Other variants may be implemented, in particular that illustrated in FIG. figure 11 in which the rear ends (18) of the bars come to chase each other each in a housing (91) in a fixed part (90) relative to the ski. This piece (90) has a lateral opening (92). This opening can receive shims (93) of variable size. The front face (94) of these wedges (93) comes into contact with the rear ends of the bars (18), thus putting them in a state of compression which is thus variable along the width of the shim (93). The implementation of these wedges (93) is done by ensuring manually or mechanically the cambering of the ski. we can provide means to prevent the wedge from escaping unexpectedly in the case where the ski marries a very important camber. It is also possible to provide reinforcements that prevent the end (18) of the bars (12, 13) from punching the shims.

Dans la variante illustrée à la figure 12, les barres (13) sont montées dans deux évidements (101), et sont mises en compression entre d'une part un premier élément fixe (102) et une second élément fixe (103) à l'intérieur duquel se vissent les extrémités (18) des barres. Plus précisément, le premier élément fixe (102) formant butée reçoit sur sa face supérieure l'organe arrière (105) de la fixation, qui comporte des nervures (106) de coopération avec la semelle de la chaussure. Cet organe arrière (105) peut être réalisé en une seule pièce comme illustré schématiquement, ou bien encore être constitué de plusieurs pièces assemblées, l'une coopérant directement avec le premier élément fixe (102), l'autre possédant les nervures de guidage (106). Dans la forme illustrée, l'organe arrière (105) coopère avec l'élément fixe (102) par un mécanisme de glissière (108), autorisant son réglage longitudinal pour tenir compte de la pointure de l'utilisateur. Bien entendu, diverses formes de glissières peuvent être adoptées sans sortir du cadre de l'invention. Le blocage de l'organe arrière (105) sur l'élément fixe (102) peut s'obtenir grâce à des moyens de verrouillage accessibles par les ouvertures (107).In the variant illustrated in figure 12 , the bars (13) are mounted in two recesses (101), and are compressed between firstly a first fixed element (102) and a second fixed element (103) inside which the ends are screwed ( 18) bars. More specifically, the first fixed element (102) forming a stopper receives on its upper face the rear member (105) of the binding, which has ribs (106) for cooperation with the sole of the boot. This rear member (105) may be made in one piece as illustrated schematically, or it may consist of several assembled parts, one cooperating directly with the first fixed element (102), the other having the guide ribs ( 106). In the illustrated form, the rear member (105) cooperates with the fixed member (102) by a slide mechanism (108), allowing its longitudinal adjustment to account for the size of the user. Of course, various forms of slides can be adopted without departing from the scope of the invention. Locking of the rear member (105) on the fixed member (102) can be obtained by means of locking means accessible through the openings (107).

Dans le même esprit, l'élément fixe avant (103) comporte également une forme de glissière permettant le réglage de la position de l'embase (110) de l'organe de la fixation comportant le mécanisme de crochetage de l'extrémité avant de la chaussure (non représenté). La position de réglage peut s'indexer grâce à des moyens traversant l'ouverture (111). La partie supérieure (non représentée) comportant le mécanisme de crochetage vient se fixer sur l'embase (110) au niveau des taraudages (113).In the same spirit, the front fixed element (103) also comprises a slider shape for adjusting the position of the base (110) of the fastener member having the hooking mechanism of the front end of the shoe (not shown). The adjustment position can be indexed by means passing through the opening (111). The upper part (not shown) comprising the hooking mechanism is fixed on the base (110) at the threads (113).

Dans la variante illustrée à la figure 13, l'organe arrière (120) de la fixation, comportant les nervures (121) est monté avec une portion (122) qui repose directement sur la face supérieure (123) du ski, et une portion (124) qui se prolonge à l'intérieur de l'évidement (125) recevant la barre caractéristique (13). Cette barre est représentée uniquement sur une partie de sa longueur, entre des entretoises de maintien (126). La barre (13) traverse la portion (124) présente dans l'évidemment (125) de sorte qu'elle retient l'organe arrière (121) sur le ski. Un mécanisme d'indexation mécanique (non représenté) peut être prévu pour éviter tout déplacement longitudinal de l'organe arrière (121) de la fixation, et même autoriser son réglage en position longitudinal.In the variant illustrated in figure 13 , the rear member (120) of the binding, comprising the ribs (121) is mounted with a portion (122) which rests directly on the upper face (123) of the ski, and a portion (124) which extends to the interior of the recess (125) receiving the characteristic bar (13). This bar is shown only over part of its length, between the holding struts (126). The bar (13) passes through the portion (124) present in the recess (125) so that it retains the rear member (121) on the ski. A mechanical indexing mechanism (not shown) may be provided to prevent longitudinal displacement of the rear member (121) of the attachment, and even allow its adjustment in longitudinal position.

Bien entendu, l'invention n'est pas limitée aux seuls cas de réalisation illustrée, notamment en ce qui concerne la localisation des moyens de réglage au niveau arrière du ski. Ces moyens de réglage peuvent ainsi bien entendu se retrouver à l'avant de la planche sans sortir du cadre de l'invention. Il ressort de ce qui précède que l'invention permet de réaliser de manière aisée un réglage de la raideur du ski, afin de conserver un cambre optimisé par rapport au poids du skieur et à son type de pratique. On limite ainsi très fortement les risques de voir la chambre à fart venir au contact de la neige pendant les phases de glisse.Of course, the invention is not limited solely to the illustrated embodiments, particularly as regards the location of the adjustment means at the rear level of the ski. These adjustment means can of course be found at the front of the board without departing from the scope of the invention. It follows from the foregoing that the invention makes it possible to easily adjust the stiffness of the ski, in order to maintain an optimized camber with respect to the weight of the skier and his type of practice. This greatly limits the risk of the chamber coming into contact with the snow during the sliding phases.

Claims (13)

  1. A crosscountry ski (1), the lower face (3) of which is curved to form a wax zone (2) positioned substantially in the region lying below the user's boot, characterized in that its upper face (11) has at least one recess (10), and wherein each recess (10) holds a rigid longitudinal bar (12, 13) extending from the rear of the wax zone (2) to the front of said zone, with one of the ends (17) of each bar (12, 13) abutting (4) on an element (16) which is fixed relative to the ski, while complementary means (20) interacting with the other end (18) of each bar (12, 13) are provided in order to adjustably compress said bar (12, 13).
  2. The crosscountry ski as claimed in claim 1, characterized in that the complementary means (25-31) for compressing said bars act jointly on the two bars (12, 13).
  3. The crosscountry ski as claimed in claim 1, characterized in that the complementary means for compressing said bars have one or more elements (23) which are screwed parallel to the bars (12, 13) and interact with the end of the bar or bars.
  4. The crosscountry ski as claimed in claim 1, characterized in that the complementary means for compressing said bars have an articulated linkage (40, 41; 50, 51) the free ends (44, 45; 43-54) of which interact with the ends (18) of said bars.
  5. The crosscountry ski as claimed in claim 1, characterized in that the complementary means for pressing said bars have an eccentric cam (60) interacting with the ends of said bars.
  6. The crosscountry ski as claimed in claim 1, characterized in that the complementary means for compressing said bars have sloping faces (84) with a slope not perpendicular to the direction of said bars, which interact with a complementary surface (81) integral with said bars.
  7. The crosscountry ski as claimed in claim 1, characterized in that the complementary means for compressing said bars have a set of wedges (93) with different sizes, one of which is interposed between a fixed point of the ski and the ends of said bars.
  8. The crosscountry ski as claimed in claim 1, characterized in that it has a boot binding plate (15) covering said bars (12, 13).
  9. The crosscountry ski as claimed in claim 8, characterized in that said plate has a protruding region (19) under its lower face, which comes in contact with the upper face of the board between said bars (12, 13).
  10. The crosscountry ski as claimed in claim 1, characterized in that the fixed element (102) is used to support a component (105) of the binding for fastening the boot on the ski.
  11. The crosscountry ski as claimed in claim 1, characterized in that the complementary means (103) are used to support a component (110) of the binding for fastening the boot on the ski.
  12. The crosscountry ski as claimed in claim 10 or 11, characterized in that the fixed element (102) or the complementary means (103) are designed as a slideway for longitudinally adjusting the position of the component (105, 110) of the binding for fastening the boot on the ski.
  13. The crosscountry ski as claimed in claim 1, characterized in that a component (121) of the binding for fastening the boot on the ski can slide on the longitudinal bar (13).
EP05300059A 2004-02-10 2005-01-26 Cross-country ski Not-in-force EP1563876B1 (en)

Applications Claiming Priority (2)

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FR0450232 2004-02-10
FR0450232A FR2865941B1 (en) 2004-02-10 2004-02-10 BACKGROUND SKI

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AT (1) ATE432743T1 (en)
DE (1) DE602005014696D1 (en)
FR (1) FR2865941B1 (en)

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EP1563876A1 (en) 2005-08-17
FR2865941B1 (en) 2006-03-10
US20050206128A1 (en) 2005-09-22
DE602005014696D1 (en) 2009-07-16
ATE432743T1 (en) 2009-06-15
FR2865941A1 (en) 2005-08-12
US7360782B2 (en) 2008-04-22

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