EP1673147A2 - Cross-country ski system provided with a direct bearing lateral surface - Google Patents

Cross-country ski system provided with a direct bearing lateral surface

Info

Publication number
EP1673147A2
EP1673147A2 EP04787272A EP04787272A EP1673147A2 EP 1673147 A2 EP1673147 A2 EP 1673147A2 EP 04787272 A EP04787272 A EP 04787272A EP 04787272 A EP04787272 A EP 04787272A EP 1673147 A2 EP1673147 A2 EP 1673147A2
Authority
EP
European Patent Office
Prior art keywords
ski
cross
country
boot
country ski
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04787272A
Other languages
German (de)
French (fr)
Other versions
EP1673147B1 (en
Inventor
François Girard
François Dufournet
Alois Pieber
Johann Hubinger
Hannes Kogler
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.)
Fischer GmbH
Salomon SAS
Original Assignee
Fischer GmbH
Salomon SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fischer GmbH, Salomon SAS filed Critical Fischer GmbH
Priority to PL04787272T priority Critical patent/PL1673147T3/en
Publication of EP1673147A2 publication Critical patent/EP1673147A2/en
Application granted granted Critical
Publication of EP1673147B1 publication Critical patent/EP1673147B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A63C9/20—Non-self-releasing bindings with special sole edge holders instead of toe-straps

Definitions

  • the invention relates to the field of cross-country skiing.
  • cross-country skis have been used with rudimentary devices for attaching the boot to the ski.
  • the sole of the boot had for example a tongue or an attachment bar which protruded beyond the front end of the shoe and which was taken by a lock arranged in front of the position of the boot relative to the ski.
  • this type of fastener has two major disadvantages.
  • these systems imposed an overall rotational movement of the shoe with respect to the ski which was located too far in relation to the foot. This resulted in an unnatural movement of the foot, away from the unwinding of the foot that can be observed when walking.
  • the object of the invention is therefore to provide a cross-country ski provided with " means allowing a better transmission of the supports on the edges of the ski, as well as optimum stability.”
  • the invention proposes a cross-country ski comprising an attachment zone intended to receive a device for attaching a boot to the ski, characterized in that the fixing zone comprises a location for accommodating the fixing device and an upper bearing surface of the ski which is arranged on at least one side of the reception location of the fastening device and on which the boot is likely to come into direct contact when the user exerts a bearing force, other characteristics and advantages of the invention will appear in FIG.
  • FIG. 1 is a partial exploded perspective view illustrating a cross-country system according to a first mod e embodiment of the invention
  • - Figure 2 is a schematic sectional view illustrating the cross-country system of Figure 1
  • FIG. 3 is a perspective view illustrating a cross-country ski, alone, comprising lateral shoulders for the implementation of a second embodiment of the invention
  • - Figure 4 is a schematic cross-sectional view of a cross-country ski system incorporating a shoulder ski
  • - Figure 5 is a side schematic illustrating an alternative embodiment of the invention
  • - Figure 6 is a schematic cross-sectional view along the line VI-VI of the invention
  • FIG. 7 is a schematic view of the upper face of a ski as illustrated in FIGS. 5 and 6.
  • FIG. 1 illustrates a cross-country ski system comprising a ski 10 of which only a central zone is represented. On this central zone of the ski is mounted a device 12 for fixing a cross-country ski boot 14. More specifically, the fixing device 12 occupies in this central zone a location which corresponds at least to the size of the device in order to above.
  • the fixing device 12 is for example similar to that described in document FR-2.739.788, to which reference will be made for a detailed description.
  • This device comprises a front jaw 16 in which a front bar 18 of the shoe 14 is intended to be locked to allow attachment of the shoe by hinge about the transverse axis of the bar.
  • this fastening device 12 allows the heel of the shoe to be lifted from the ski.
  • the device 12 further comprises, longitudinally behind the jaw 16, an elastic return mechanism which comprises an articulated rod 20 for example to hook on a rear bar (not shown) arranged under the sole 22 of the shoe 14
  • the fixing device 12 further comprises a guide edge 24 whose profile is complementary of a corresponding groove (not visible) formed under the sole of the shoe.
  • the arrangement of the fastening device 12 on the ski 10 is such that it is provided, on either side transversely of the location of the fixing device 12, portions of the upper surface 26 of the ski which form bearing surfaces 28 on which corresponding bearing surfaces 30 of the sole of the shoe are intended to come into direct contact.
  • FIGS. 1 and 2 there is illustrated the case where the ski has an upper surface 26 substantially flat.
  • the fixing device 12 is arranged on a location located transversely to the center of the ski.
  • the location of the fastener 12 that is to say the portion of the upper surface of the ski on which the fastening device 12 is to be arranged, is at the same height level as the lateral surfaces of the fastener 12. 28.
  • FIGS. 3 and 4 there is illustrated an alternative embodiment in which the ski has, at least in its portion located longitudinally in the center, two lateral shoulders which extend longitudinally on each side of the location. fixation, which is located transversely to the center of the ski.
  • the upper surfaces of these shoulders will advantageously form the direct bearing surfaces 28 within the meaning of the invention.
  • the shoulders may be made in the form of raised bosses, or they may result from a disbursement of the central part of the ski, this disbursement then materializing the location of the ski binding device. .
  • This embodiment may make it possible to obtain a lower position of the binding, and therefore a lower position of the boot with respect to the snow, which can have a favorable influence on the stability of the system.
  • the lateral edges of the upper face of the ski, on which the lateral bearing surfaces are formed are arranged at a level lower than that of the location of the device. of fixation.
  • the fixing device 12 shown in the figures is a simple embodiment, and the invention may be implemented with other types of fasteners for the practice of cross-country skiing. It can also be envisaged that the fixing device is partly integrated with the ski, with for example a part directly articulated in the ski or with a portion of the guide edge integrated with the ski. However, the invention implies that, at least at the level of the support zone, the fixing device is less wide than the ski.
  • bearing zones will preferably be arranged longitudinally at a level corresponding to the metatarsophalangeal flexion zone of the user's foot, which is the preferential zone by which the user exerts his support force at the end of the thrust, when his heel is already raised in relation to the ski.
  • the examples illustrate the case where there are two bearing surfaces on either side of the attachment.
  • the ski has only a lateral surface of direct support, arranged on one side of the fixing device.
  • the lateral bearing surfaces 28 of the ski are substantially horizontal, that is to say that they are substantially parallel to the lower sliding surface of the ski.
  • the lateral bearing surfaces 28 are not flat, but they have a curvature complementary to a curvature of the face lower 30 of the sole of the shoe.
  • the lateral bearing surfaces 28 can be configured in such a way that, at least at the level of the support zone, the transverse width of the upper face of the ski is greater the width of the lower gliding surface of the ski through which the ski is supported on the snow.
  • Such a construction which results in the presence of 32 oblique songs on the ski, allows an increase in edge grip.
  • the importance of the lateral offset of the bearing surfaces 28 may be different on one side and the other of the ski, which can thus have an asymmetrical section.
  • such a design also makes it possible to stiffen the ski in torsion.

Landscapes

  • 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)
  • Laminated Bodies (AREA)

Abstract

A cross-country ski includes a cross-country ski having a central area for receiving a ski binding device for fixing a ski boot to the ski. The fixing area includes a space for receiving the binding device and a top bearing surface of the ski which is applied to at least one side of the space for receiving the binding device and on which the boot is directly connectable when the user applies a pressure force.

Description

SYSTÈME DE SKI DE FOND AVEC SURFACE LATÉRALE D'APPUI DIRECT BACKGROUND SKI SYSTEM WITH DIRECT SUPPORT SIDE SURFACE
L'invention se rapporte au domaine du ski de fond. Longtemps, les skis de fond ont été utilisés avec des dispositifs rudimentaires de fixation de la chaussure sur le ski. La semelle de la chaussure possédait par exemple une languette ou une barrette de fixation qui dépassait au-delà de l'extrémité avant de la chaussure et qui était prise par un verrou agencé en avant de la position de la chaussure par rapport au ski. On s'est aperçu que ce genre de fixations possédait deux inconvénients majeurs. Lors de la pratique de la technique classique du pas alternatif, on s'est aperçu que ces systèmes imposaient un mouvement global de rotation de la chaussure par rapport au ski qui était situé trop en avant par rapport au pied. Il en résultait un mouvement peu naturel du pied, éloigné du déroulé du pied que l'on peut observer lors de la marche. Lors de la pratique du pas du patineur, ces systèmes présentaient en outre l'inconvénient de n'assurer qu'un très médiocre guidage latéral de la chaussure par rapport au ski. Pour remédier à ces problèmes, il est apparu dans les années 1980 des systèmes de fixation de la chaussure sur le ski par lesquels là chaussure est articulée sur le ski autour d'un axe qui est situé juste en arrière de l'extrémité avant de la semelle. Dans ces systèmes, une partie au moins du dispositif de fixation est agencé sous la semelle de la chaussure. Cela a permis de reculer le point de pivotement de la chaussure par rapport au ski, et de rigidifier la tenue en torsion de l'ensemble chaussure/fixation lors de la pratique du pas du patineur. Dans le dispositif décrit dans le document FR-2.739.788, on retrouve que non seulement l'axe d'articulation de la chaussure est situé sous la semelle, mais aussi les moyens de rappel élastiques qui tendent à plaquer la chaussure à plat contre le ski. D'autres dispositifs, décrits par exemple dans les documents FR-2.742.060, FR-2.782.652, WO-01/96963, WO-02/05907, ou encore WO-02/087710, confirment la tendance qu'il y a à rechercher un positionnement du dispositif de fixation le plus possible sous la semelle de la chaussure, et non plus essentiellement en avant de celle-ci. Cependant, Beaucoup de ces systèmes présentent l'inconvénient de s'interposer entre la chaussure et le ski, et de rehausser singulièrement la position de la chaussure par rapport au ski. Cela a comme première conséquence de ne pas permettre un appui direct de la chaussure sur le ski, ce qui peut être nuisible à un bon appui sur les carres du ski, notamment pour la pratique du pas du patineur. Par ailleurs, dans les systèmes connus, l'appui de la chaussure sur le ski se fait non pas directement sur le ski, mais généralement par l'intermédiaire d'une plaque d'embase qui recouvre plus ou moins toute la largeur de la face supérieure du ski, telle que celle illustrée par exemple dans le document EP-878.218. La présence d'une telle plaque apporte un surcroît de hauteur à la position de la chaussure, et elle a tendance par ailleurs à répartir la pression sur la largeur du ski alors que, lors d'une prise de carre, on cherche au contraire à concentrer un maximum de la pression du ski sur l'une des carres, généralement la carre intérieure. L'invention a donc pour but de proposer un ski de fond pourvu de "moyens permettant une meilleure transmission des appuis sur les carres du ski, de même qu'une stabilité optimale. Dans ce but, l'invention propose un ski de fond comportant une zone de fixation destinée à recevoir un dispositif de fixation d'une chaussure sur le ski, caractérisé en ce que la zone de fixation comporte un emplacement d'accueil du dispositif de fixation et une face supérieure d'appui du ski qui est agencée sur au moins un côté de l'emplacement d'accueil du dispositif de fixation et sur laquelle la chaussure est susceptible de venir directement en contact lorsque l'utilisateur exerce un effort d'appui. D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit, ainsi qu'au vu des dessins annexés dans lesquels : - la figure 1 est une vue partielle en perspective éclatée illustrant un système de ski de fond conforme à un premier mode de réalisation de l'invention ; - la figure 2 est une vue schématique en coupe illustrant le système de ski de fond de la figure 1 ; - la figure 3 est une vue en perspective illustrant un ski de fond, seul, comportant des épaulements latéraux pour la mise en œuvre d'un second mode de réalisation de l'invention ; - la figure 4 est une vue schématique en coupe transversale d'un système de ski de fond incorporant un ski à épaulement ; - la figure 5 est une Schématique de côté illustrant une variante de réalisation de l'invention ; - la figure 6 est une vue schématique en coupe transversale selon la ligne VI- VI de l'invention ; et - la figure 7 est une vue schématique de la face supérieure d'un ski tel qu'illustré sur les figures 5 et 6. On a illustré sur la figure 1 un système de ski de fond comportant un ski 10 dont seule une zone centrale est représentée. Sur cette zone centrale du ski est monté un dispositif 12 de fixation d'une chaussure de ski de fond 14. Plus précisément, le dispositif de fixation 12 occupe dans cette zone centrale un emplacement qui correspond au moins à la taille du dispositif en vue de dessus. Le dispositif de fixation 12 est par exemple analogue à celui qui est décrit dans le document FR-2.739.788, auquel on se reportera pour une description détaillée. Ce dispositif comporte une mâchoire avant 16 dans laquelle une barrette avant 18 de la chaussure 14 est destinée à être verrouillée pour permettre une fixation de la chaussure par articulation autour de l'axe transversal de la barrette. En effet, ce dispositif de fixation 12 permet au talon de la chaussure d'être soulevé du ski. Le dispositif 12 comporte par ailleurs, longitudinalement en arrière de la mâchoire 16, un mécanisme de rappel élastique qui comporte une biellette articulée 20 destinée par exemple à s'accrocher sur une barrette arrière (non représentée) agencée sous la semelle 22 de la chaussure 14. Enfin, dans le prolongement arrière de la biellette, le dispositif de fixation 12 comporte encore une arête de guidage 24 dont le profil est complémentaire d'une rainure correspondante (non visible) formée sous la semelle de la chaussure. Selon l'invention, l'agencement du dispositif de fixation 12 sur le ski 10 est tel qu'il est ménagé, de part et d'autre transversalement de l'emplacement du dispositif de fixation 12, des portions de la surface supérieure 26 du ski qui forment des surfaces d'appui 28 sur lesquelles des surfaces d'appui 30 correspondantes de la semelle de la chaussure sont destinées à venir directement en contact. Plusieurs variantes de l'invention peuvent être envisagées. Sur les figures 1 et 2, on a illustré le cas où le ski présente une surface supérieure 26 essentiellement plane. Dans ce cas, le dispositif de fixation 12 est agencé sur un emplacement situé transversalement au centre du ski. Dans ce cas, l'emplacement de la fixation 12, c'est-à- dire la portion de la surface supérieure du ski sur laquelle doit être agencé le dispositif de fixation 12, se situe au même niveau en hauteur que les surfaces latérales d'appui direct 28. Sur les figures 3 et 4 on a illustré une variante de réalisation dans laquelle le ski présente, au moins dans sa portion située longitudinalement au centre, deux épaulements latéraux qui s'étendent longitudinalement de chaque côté de l'emplacement 29 de la fixation, lequel est situé transversalement au centre du ski. Dans ce cas, les surface supérieures de ces épaulements formeront avantageusement les surfaces d'appui direct 28 au sens de l'invention. Par rapport à un ski à face supérieure plane, les épaulements pourront être réalisés sous la forme de bossages surélevés, ou ils pourront résulter d'un décaissement de la partie centrale du ski, ce décaissement matérialisant alors l'emplacement du dispositif de fixation du ski. Ce mode de réalisation pourra permettre d'obtenir une position plus basse de la fixation, donc une position plus basse de la chaussure par rapport à la neige, ce qui peut influer favorablement sur la stabilité du système. Au contraire du mode de réalisation de la figure 3, on peut prévoir que les bords latéraux de la face supérieure du ski, sur lesquels sont formées les surfaces latérales d'appui, soient agencés à un niveau inférieur à celui de l'emplacement du dispositif de fixation. On aura alors un ski dont l'épaisseur sur les bords latéraux sera réduite, réduisant ainsi la hauteur des surfaces d'appui par rapport aux carres du ski, tout en conservant ces surfaces d'appui de part et d ' autre du dispositif de fixation. Dans l'exemple illustré à la figure 3, la différence de niveau entre l'emplacement de la fixation et les deux faces supérieures des épaules varie graduellement au point de s'annuler progressivement vers les extrémités avant et arrière des épaulements (lesquels ne s'étendent donc pas sur toute la longueur du ski). Au contraire, par exemple dans le cas où l'emplacement de la fixation résulte d'un décaissement de la face supérieure du ski, le raccordement les extrémités avant et arrières du décaissement avec la face supérieure du ski peuvent former une marche. Dans les deux cas, on voit aux figures 2 et 4 que les surfaces d'appui de la semelle de la chaussure viennent en appui directement sur les surfaces latérales 28, sans interposition d'une pièce intermédiaire telle qu'une pièce plastique entre les deux. La transmission des efforts d'appui de l'utilisateur, notamment en phase de poussée, est ainsi rendue directe et se trouve améliorée. Bien entendu, le dispositif de fixation 12 représenté sur les figures est un simple exemple de réalisation, et l'invention pourra être mise en œuvre avec d'autres types de dispositifs de fixation destinés à la pratique du ski de fond. On peut aussi envisager que le dispositif de fixation soit en partie intégré au ski, avec par exemple une pièce directement articulée dans le ski ou avec une partie de l'arête de guidage intégrée au ski. Cependant, l'invention implique que, au moins au niveau de la zone d'appui, le dispositif de fixation soit moins large que le ski. Ces zones d'appui seront de préférence agencées longitudinalement à un niveau correspondant à la zone de flexion métatarso-phalangienne du pied de l'utilisateur, qui est la zone préférentielle par laquelle l'utilisateur exerce son effort d'appui en fin de poussée, lorsque son talon est déjà relevé par rapport au ski. De même, les exemples illustrent le cas où il est prévu deux surfaces d'appui de part et d'autre de la fixation. Cependant, en tenant compte du fait que, lors de la pratique du pas du patineur, les appuis sont surtout importants du côté de la carre intérieure du ski, on peut prévoir que le ski ne comporte qu'une surface latérale d'appui direct, agencée sur un seul côté du dispositif de fixation. De préférence, les surfaces latérales d'appui 28 du ski sont sensiblement horizontales, c'est-à-dire qu'elles sont sensiblement parallèles à la surface inférieure de glisse du ski. Cependant, dans l'exemple de réalisation illustré de manière schématique sur les figures 5 à 7, on peut prévoir que les surfaces latérales d'appui 28 ne soient pas planes, mais qu'elles présentent une courbure complémentaire d'une courbure de la face inférieure 30 de la semelle de la chaussure. De même, comme on peut voir aux figures 6 et 7, les surfaces latérales d'appui 28 peuvent être configurées de telle façon que, au moins au niveau de la zone d'appui, la largeur transversale de la face supérieure du ski soit supérieure à la largeur de la surface inférieure de glisse du ski par laquelle le ski est en appui sur la neige. Une telle construction, qui se traduit par la présence de chants 32 obliques sur le ski, permet un accroissement de la prise de carre. Comme on le voit, l'importance du déport latéral des surfaces d'appui 28 peut être différents d'un côté et de l'autre du ski, qui peut ainsi présenter une section dissymétrique. Par ailleurs, une telle conception permet aussi de rigidifier le ski en torsion. The invention relates to the field of cross-country skiing. For a long time, cross-country skis have been used with rudimentary devices for attaching the boot to the ski. The sole of the boot had for example a tongue or an attachment bar which protruded beyond the front end of the shoe and which was taken by a lock arranged in front of the position of the boot relative to the ski. It has been found that this type of fastener has two major disadvantages. During the practice of the conventional technique of the alternative step, it was found that these systems imposed an overall rotational movement of the shoe with respect to the ski which was located too far in relation to the foot. This resulted in an unnatural movement of the foot, away from the unwinding of the foot that can be observed when walking. In practice of the skater's step, these systems also had the disadvantage of providing only a very poor lateral guidance of the boot with respect to the ski. To remedy these problems, it appeared in the 1980s shoe attachment systems on the ski by which there shoe is articulated on the ski around an axis which is located just behind the front end of the ski. sole. In these systems, at least part of the fastening device is arranged under the sole of the boot. This made it possible to lower the point of pivoting of the boot with respect to the ski, and to stiffen the torsional resistance of the shoe / binding assembly during the practice of the skater's step. In the device described in the document FR-2.739.788, it is found that not only the hinge axis of the shoe is located under the sole, but also the elastic return means which tend to press the shoe flat against the ski. Other devices, described for example in the documents FR-2.742.060, FR-2.782.652, WO-01/96963, WO-02/05907, or WO-02/087710, confirm the trend that there is to seek a positioning of the fastening device as much as possible under the sole of the boot, and no longer essentially in front of it. However, many of these systems have the disadvantage of interposing between the shoe and the ski, and singularly enhance the position of the boot relative to the ski. This has the first consequence of not allowing a direct support of the boot on the ski, which can be detrimental to a good support on the edges of the ski, especially for the practice of skating pace. Furthermore, in the known systems, the support of the boot on the ski is not directly on the ski, but generally via a baseplate that covers more or less the entire width of the face ski, as illustrated for example in EP-878.218. The presence of such a plate brings an extra height to the position of the shoe, and it also tends to distribute the pressure on the width of the ski whereas, when taking a square edge, one seeks on the contrary to concentrate a maximum of ski pressure on one of the edges, usually the inner edge. The object of the invention is therefore to provide a cross-country ski provided with " means allowing a better transmission of the supports on the edges of the ski, as well as optimum stability." For this purpose, the invention proposes a cross-country ski comprising an attachment zone intended to receive a device for attaching a boot to the ski, characterized in that the fixing zone comprises a location for accommodating the fixing device and an upper bearing surface of the ski which is arranged on at least one side of the reception location of the fastening device and on which the boot is likely to come into direct contact when the user exerts a bearing force, other characteristics and advantages of the invention will appear in FIG. the reading of the detailed description which follows, as well as in view of the appended drawings in which: - Figure 1 is a partial exploded perspective view illustrating a cross-country system according to a first mod e embodiment of the invention; - Figure 2 is a schematic sectional view illustrating the cross-country system of Figure 1; FIG. 3 is a perspective view illustrating a cross-country ski, alone, comprising lateral shoulders for the implementation of a second embodiment of the invention; - Figure 4 is a schematic cross-sectional view of a cross-country ski system incorporating a shoulder ski; - Figure 5 is a side schematic illustrating an alternative embodiment of the invention; - Figure 6 is a schematic cross-sectional view along the line VI-VI of the invention; and FIG. 7 is a schematic view of the upper face of a ski as illustrated in FIGS. 5 and 6. FIG. 1 illustrates a cross-country ski system comprising a ski 10 of which only a central zone is represented. On this central zone of the ski is mounted a device 12 for fixing a cross-country ski boot 14. More specifically, the fixing device 12 occupies in this central zone a location which corresponds at least to the size of the device in order to above. The fixing device 12 is for example similar to that described in document FR-2.739.788, to which reference will be made for a detailed description. This device comprises a front jaw 16 in which a front bar 18 of the shoe 14 is intended to be locked to allow attachment of the shoe by hinge about the transverse axis of the bar. Indeed, this fastening device 12 allows the heel of the shoe to be lifted from the ski. The device 12 further comprises, longitudinally behind the jaw 16, an elastic return mechanism which comprises an articulated rod 20 for example to hook on a rear bar (not shown) arranged under the sole 22 of the shoe 14 Finally, in the rear extension of the connecting rod, the fixing device 12 further comprises a guide edge 24 whose profile is complementary of a corresponding groove (not visible) formed under the sole of the shoe. According to the invention, the arrangement of the fastening device 12 on the ski 10 is such that it is provided, on either side transversely of the location of the fixing device 12, portions of the upper surface 26 of the ski which form bearing surfaces 28 on which corresponding bearing surfaces 30 of the sole of the shoe are intended to come into direct contact. Several variants of the invention may be envisaged. In Figures 1 and 2, there is illustrated the case where the ski has an upper surface 26 substantially flat. In this case, the fixing device 12 is arranged on a location located transversely to the center of the ski. In this case, the location of the fastener 12, that is to say the portion of the upper surface of the ski on which the fastening device 12 is to be arranged, is at the same height level as the lateral surfaces of the fastener 12. 28. In FIGS. 3 and 4 there is illustrated an alternative embodiment in which the ski has, at least in its portion located longitudinally in the center, two lateral shoulders which extend longitudinally on each side of the location. fixation, which is located transversely to the center of the ski. In this case, the upper surfaces of these shoulders will advantageously form the direct bearing surfaces 28 within the meaning of the invention. Compared to a ski with a flat upper surface, the shoulders may be made in the form of raised bosses, or they may result from a disbursement of the central part of the ski, this disbursement then materializing the location of the ski binding device. . This embodiment may make it possible to obtain a lower position of the binding, and therefore a lower position of the boot with respect to the snow, which can have a favorable influence on the stability of the system. In contrast to the embodiment of FIG. 3, it can be provided that the lateral edges of the upper face of the ski, on which the lateral bearing surfaces are formed, are arranged at a level lower than that of the location of the device. of fixation. We will then have a ski whose thickness on the lateral edges will be reduced, thereby reducing the height of the bearing surfaces relative to the edges of the ski, while maintaining these bearing surfaces on either side of the fixing device. . In the example illustrated in FIG. 3, the difference in level between the location of the fastener and the two upper faces of the shoulders varies gradually to the point of gradually canceling out towards the front and rear ends of the shoulders (which are not do not extend over the entire length of the ski). On the contrary, for example in the case where the location of the binding results from a disbursement of the upper face of the ski, the connection the front and rear ends of the disbursement with the upper face of the ski can form a step. In both cases, it can be seen in FIGS. 2 and 4 that the bearing surfaces of the sole of the boot bear directly on the lateral surfaces 28, without the interposition of a intermediate piece such as a plastic part between the two. The transmission of user support efforts, especially in the push phase, is thus made direct and is improved. Of course, the fixing device 12 shown in the figures is a simple embodiment, and the invention may be implemented with other types of fasteners for the practice of cross-country skiing. It can also be envisaged that the fixing device is partly integrated with the ski, with for example a part directly articulated in the ski or with a portion of the guide edge integrated with the ski. However, the invention implies that, at least at the level of the support zone, the fixing device is less wide than the ski. These bearing zones will preferably be arranged longitudinally at a level corresponding to the metatarsophalangeal flexion zone of the user's foot, which is the preferential zone by which the user exerts his support force at the end of the thrust, when his heel is already raised in relation to the ski. Similarly, the examples illustrate the case where there are two bearing surfaces on either side of the attachment. However, taking into account the fact that, during the practice of the skater's step, the supports are especially important on the side of the inner edge of the ski, it can be provided that the ski has only a lateral surface of direct support, arranged on one side of the fixing device. Preferably, the lateral bearing surfaces 28 of the ski are substantially horizontal, that is to say that they are substantially parallel to the lower sliding surface of the ski. However, in the embodiment illustrated schematically in Figures 5 to 7, it can be provided that the lateral bearing surfaces 28 are not flat, but they have a curvature complementary to a curvature of the face lower 30 of the sole of the shoe. Similarly, as can be seen in FIGS. 6 and 7, the lateral bearing surfaces 28 can be configured in such a way that, at least at the level of the support zone, the transverse width of the upper face of the ski is greater the width of the lower gliding surface of the ski through which the ski is supported on the snow. Such a construction, which results in the presence of 32 oblique songs on the ski, allows an increase in edge grip. As can be seen, the importance of the lateral offset of the bearing surfaces 28 may be different on one side and the other of the ski, which can thus have an asymmetrical section. Moreover, such a design also makes it possible to stiffen the ski in torsion.

Claims

REVENDICATIONS
1. Système de ski de fond dans lequel un ski de fond (10) comporte une zone centrale destinée à recevoir un dispositif (12) de fixation d'une chaussure (14) sur le ski, caractérisé en ce que la zone de fixation comporte un emplacement (29) d'accueil du dispositif de fixation (12) et une face supérieure d'appui du ski (28) qui est agencée sur au moins un côté de l'emplacement (29) d'accueil du dispositif de fixation (12) et sur laquelle la chaussure est susceptible de venir directement en contact lorsque l'utilisateur exerce un effort d'appui, et en ce que l'emplacement d'accueil (29) est formé par un décaissement de la surface supérieure (26) du ski (10).A cross-country ski system in which a cross-country ski (10) has a central zone for receiving a device (12) for attaching a boot (14) to the ski, characterized in that the fastening zone comprises a location (29) for receiving the fastening device (12) and a ski upper surface (28) which is arranged on at least one side of the mounting location (29) of the fastening device ( 12) and on which the boot is capable of coming into direct contact when the user exerts a bearing force, and in that the receiving position (29) is formed by a disbursement of the upper surface (26). skiing (10).
2. Système de ski de fond selon la revendication 1, caractérisé en ce que le ski comporte, dans la zone centrale, au moins un épaulement latéral qui est agencé sur un côté de l'emplacement (29) d'accueil du dispositif de fixation (12) de telle sorte que, sous l'effet d'un appui, la chaussure (14) vient directement en appui sur l'épaulement (28).2. Cross-country ski system according to claim 1, characterized in that the ski comprises, in the central zone, at least one lateral shoulder which is arranged on one side of the location (29) of the fixing device (12) so that, under the effect of a support, the shoe (14) bears directly on the shoulder (28).
3. Système de ski de fond selon l'une des revendications 1 ou 2, caractérisé en ce que le ski comporte deux faces supérieures latérales (28) disposées de part et d'autre du dispositif de fixation (12).3. Cross-country ski system according to one of claims 1 or 2, characterized in that the ski has two upper side faces (28) disposed on either side of the fastening device (12).
4. Système de ski de fond selon l'une des revendications 2 ou 3, caractérisé en ce que l'épaulement comporte une face d'appui qui est agencée au-dessus du niveau de la face supérieure de l'emplacement d'accueil du dispositif de fixation.4. Cross-country ski system according to one of claims 2 or 3, characterized in that the shoulder comprises a bearing face which is arranged above the level of the upper face of the home location of the fixing device.
5. Système de ski de fond, caractérisé en ce que face supérieure d'appui du ski (28) est agencée longitudinalement à un niveau correspondant à la zone de flexion métatarso- phalangienne du pied de l'utilisateur.5. A cross-country skiing system, characterized in that the upper bearing surface of the ski (28) is arranged longitudinally at a level corresponding to the metatarsophalangeal flexion zone of the user's foot.
6. Système de ski de fond selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de fixation (12) présente, au moins au niveau de la face d'appui, une largeur inférieure à celle du ski.6. Cross-country ski system according to any one of the preceding claims, characterized in that the fastening device (12) has, at least at the level of the bearing face, a width less than that of the ski.
7. Système de ski de fond selon l'une quelconque des revendications précédentes, caractérisé en ce que le ski présente, au moins dans une partie de la zone centrale, une face supérieure dont la largeur transversale est supérieure à la largeur de la surface inférieure de glisse du ski. 7. Cross-country ski system according to any one of the preceding claims, characterized in that the ski has, at least in part of the central zone, an upper face whose transverse width is greater than the width of the lower surface. skiing.
EP04787272A 2003-09-03 2004-09-01 Cross-country ski system provided with a direct bearing lateral surface Expired - Lifetime EP1673147B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04787272T PL1673147T3 (en) 2003-09-03 2004-09-01 Cross-country ski system provided with a direct bearing lateral surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0310443A FR2859110B1 (en) 2003-09-03 2003-09-03 BACKGROUND SKI SYSTEM WITH DIRECT SUPPORT SIDE SURFACE
PCT/FR2004/002216 WO2005023384A2 (en) 2003-09-03 2004-09-01 Cross-country ski system provided with a direct bearing lateral surface

Publications (2)

Publication Number Publication Date
EP1673147A2 true EP1673147A2 (en) 2006-06-28
EP1673147B1 EP1673147B1 (en) 2012-04-25

Family

ID=34130748

Family Applications (1)

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EP04787272A Expired - Lifetime EP1673147B1 (en) 2003-09-03 2004-09-01 Cross-country ski system provided with a direct bearing lateral surface

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Country Link
US (1) US9050521B2 (en)
EP (1) EP1673147B1 (en)
AT (1) ATE554836T1 (en)
ES (1) ES2383690T3 (en)
FR (1) FR2859110B1 (en)
NO (1) NO331755B1 (en)
PL (1) PL1673147T3 (en)
WO (1) WO2005023384A2 (en)

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US10471334B1 (en) * 2018-10-22 2019-11-12 Thomas K Iverson Universal shoe harness for Nordic ski

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Also Published As

Publication number Publication date
NO331755B1 (en) 2012-03-19
WO2005023384A3 (en) 2005-05-12
NO20061501L (en) 2006-04-03
ATE554836T1 (en) 2012-05-15
ES2383690T3 (en) 2012-06-25
PL1673147T3 (en) 2013-05-31
FR2859110A1 (en) 2005-03-04
US9050521B2 (en) 2015-06-09
WO2005023384A2 (en) 2005-03-17
US20070040357A1 (en) 2007-02-22
FR2859110B1 (en) 2006-04-07
EP1673147B1 (en) 2012-04-25

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