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EP0188985A1 - Snow ski - Google Patents

Snow ski Download PDF

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Publication number
EP0188985A1
EP0188985A1 EP85420241A EP85420241A EP0188985A1 EP 0188985 A1 EP0188985 A1 EP 0188985A1 EP 85420241 A EP85420241 A EP 85420241A EP 85420241 A EP85420241 A EP 85420241A EP 0188985 A1 EP0188985 A1 EP 0188985A1
Authority
EP
European Patent Office
Prior art keywords
ski
visco
elastic material
damping device
elasticity
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
EP85420241A
Other languages
German (de)
French (fr)
Other versions
EP0188985B1 (en
Inventor
Yves Piegay
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
Original Assignee
Skis Rossignol SA
Rossignol SA
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 Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Priority to AT85420241T priority Critical patent/ATE37145T1/en
Publication of EP0188985A1 publication Critical patent/EP0188985A1/en
Application granted granted Critical
Publication of EP0188985B1 publication Critical patent/EP0188985B1/en
Expired legal-status Critical Current

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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
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A63C5/122—Selection of particular materials for damping purposes, e.g. rubber or the like

Definitions

  • a ski In evolution on snow, a ski is subjected to shocks of various origins and of all kinds which cause vibrations of the ski; and if these vibrations exceed a certain level, they are harmful, not only to the comfort of the skier, but also to the good behavior of the ski. Thus, in particular, certain vibrations cause a loss of contact between the ski and the snow, which harms the stability, the grip and the sliding of the ski.
  • the invention solves this problem. Its purpose is a ski externally comprising at least one such shock absorber system which has a length of between 5 and 20 centimeters and the center of which is placed near either the heel of the ski, or the start of its tip, or the front of the binding area of the shoe.
  • the damping device therefore has a reduced length compared to the carrying length of the ski; and its positioning is done in zones which are determined according to the types of vibrations which it is desirable to absorb on the ski in question in order to increase its qualities.
  • these areas are specific. Considering for example a ski having for a total length of 2 meters a distance of 180 centimeters between its heel and its front line of contact with the snow, these zones are comprised respectively between 10 to 20%, 65 to 75% and 85 to 97 % of this distance, from the ski heel.
  • vibrations those of bending in a plane perpendicular to the snow which deserve above all to be considered in a piste ski.
  • vibrations essentially belong to the "first mode” and to the "third mode”.
  • FIG. 1 of the accompanying drawing showing a ski seen very schematically from the side in elevation
  • Figures 2 and 3 show the deformed shape of this ski in maximum amplitude, respectively in the first vibration mode and in the third vibration mode.
  • the first mode is predominant in a special slalom ski
  • the third mode is predominant in a giant slalom ski.
  • FIGS. 4 and 5 of the accompanying drawing are very schematic plan views illustrating, by way of example, the position of the shock absorber systems in two skis which can be considered one as a special slalom ski, and the other a ski giant slalom, both having a bearing length of 180 centimeters for a total length of 2 meters.
  • the ski of FIG. 4 comprises two damping systems respectively (la) and (lb). They are each 15 centimeters long. The center of that (la) is placed at a distance of 27.5 centimeters from the ski heel, and the center of that (lb) is located 167 centimeters from this heel.
  • the ski of Figure 5 has a single shock absorber system (2). It has a length of 20 centimeters; and its center is placed 128 centimeters from the ski heel.
  • Each shock absorbing device placed on the ski consists of one or more layers of visco-elastic material assembled by bonding with one or more stress plates made of a material with high elasticity modulus, such as aluminum alloy or laminate with based on resin and glass fibers or carbon fibers.
  • (3) designates the body of a ski on the upper face of which is placed a damping device generally designated by (4).
  • This device consists of a strip of visco-elastic material (5) linked. by bonding with a plate (6) made of a material with a high modulus of elasticity, for example, "zicral".
  • This damping device is fixed to the ski (3) by bonding its lower face to the upper face of the ski.
  • the damping device working in shear it is possible to increase its effects by increasing the number of layers of visco-elastic material. This is the case in the case of the damping device represented in FIG. 7. It is constituted by two layers of visco-elastic material respectively (7) and (8) which are separated by a plate (9) constituted in "zicral” or in any other material with high modulus of elasticity.
  • the three elements (7), (8) and (9) are assembled by bonding the two strips (7) and (8) respectively on and under the plate (9); and this assembly is fixed both on the upper face of the ski (10) and inside a cover (11) which is made of a material with high elasticity modulus, for example in "zicral” and which has two longitudinal wings (12) by which it is fixed to the ski, for example by gluing or by screwing.
  • the damping device comprises a lower plate (13) and a profile (.14) which are made of a material with a high modulus of elasticity, for example in " zicral ".
  • the profile (14) has a central longitudinal part (14a) glued to the plate (13) and in which are cut several longitudinal slots (15) each traversed by a screw (16) intended for fixing the damping device on the upper face ski.
  • the profile (14) comprises two raised wings (17) which are parallel to the plate (13) and to the upper face of the ski and thus delimit a cage in which are superimposed a strip of visco-elastic material (18), a plate with high elastic modulus (19) and a strip of visco-elastic material (20).
  • the three elements (18), (19) and (20) are linked together by gluing; the one (18) is glued with the plate (13), and the one (20) is glued with the wing (17) of the profile (14).
  • the assembly constitutes a shock-absorbing device whose longitudinal position on the ski is adjustable. This adjustment is obtained by sliding the shock absorber on the ski using the lights (15) in the central part (14a). When the appropriate position has been given to the damping device on the ski, immobilization is obtained by tightening the screws (16).
  • a device for adjusting the location of the damping device with a view to modulating its efficiency is obviously possible in the case of the embodiment previously described with reference to FIG. 7.
  • the two longitudinal wings ( 12) of the hood (11) have longitudinal lights through which the hood fixing screws pass, and this hood is provided with a lower plate by which it is linked to the ski.
  • Figure 10 shows another alternative embodiment of the damping device. It consists of a layer of visco-elastic material (22) on which are superimposed two high modulus plates of elasticity, respectively (23) and (24), between which a lubricated contact is provided, for example by means of silicone-based grease.
  • the coefficient of friction f between the two plates (23) and (24) is therefore low.
  • a coefficient of friction f 2 much greater than f is provided between the ski and the layer (22) of visco-elastic material.
  • This damping device is fixed to the ski by means of screws (26). To allow the efficiency of the damping device to be adjusted, longitudinal lights through which the screws (26) pass can be provided in the two plates (23) and (24).
  • the invention is not limited to the sole embodiments of this damping device, nor to the only means which have been indicated, in order to allow the adjustment of their position on the ski; on the contrary, it embraces all variants, regardless of the type of ski to which the shock absorber (s) are adapted: downhill skiing, special slalom skiing, giant slalom skiing, touring ski, touring ski, monoski. ..

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  • Vibration Prevention Devices (AREA)
  • Laminated Bodies (AREA)
  • Vibration Dampers (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A vibration damper is used in combinataion with a ski having an upper surface, a turned up front end, a rear end, and a central ski binding on the upper surface. The damper is between 5 cm and 20 cm long and comprises a viscoelastic sheet flatly engaging the upper surface immediately behind the front end, immediately ahead of the rear end, or immediately ahead of the ski binding and a damper plate with a high modulus of elasticity overlying the viscoelastic sheet. The plate is secured atop the sheet on the upper ski surface. The damper is between 10% and 20% of the length of the ski from the rear end of the ski, between 65% and 75% of the length of the ski from the rear end, and/or between 85% and 97% of the length of the ski from the rear end. A 2 m ski normally has a distance of 180 cm between the rear end of the ski and the start of the front upturned end of the ski.

Description

En évolution sur la neige, un ski est soumis à des chocs d'origines diverses et de toutes natures qui provoquent des vibrations du ski ; et si ces vibrations dépassent un certain niveau, elles sont nuisibles, non seulement au confort du skieur, mais aussi au bon comportement du ski. C'est ainsi notamment que certaines vibrations provoquent une perte de contact entre le ski et la neige, ce qui nuit à la stabilité, à l'accrochage et à la glisse du ski.In evolution on snow, a ski is subjected to shocks of various origins and of all kinds which cause vibrations of the ski; and if these vibrations exceed a certain level, they are harmful, not only to the comfort of the skier, but also to the good behavior of the ski. Thus, in particular, certain vibrations cause a loss of contact between the ski and the snow, which harms the stability, the grip and the sliding of the ski.

Pour résoudre ce problème des vibrations d'un ski, il a été proposé dans le brevet US N° 3.901.522 d'inclure dans la structure du ski et sur toute sa longueur une bande de matériau visco-élastique, et il a été proposé dans le brevet US N° 3.537.717 de placer une telle bande sur la face supérieure du ski dans toute sa zone s'étendant depuis l'emplacement de fixation de la chaussure jusqu'à la naissance de la spatule. L'expérience prouve toutefois que, dans les deux cas, le problème des vibrations est mal résolu, car les vibrations sont supprimées sans aucune sélection, ce dont il résulte finalement que le ski ne vibre sans doute plus, mais a entièrement perdu ses caractéristiques essentielles de stabilité et d'accrochage.To solve this problem of the vibrations of a ski, it has been proposed in US Patent No. 3,901,522 to include in the structure of the ski and over its entire length a strip of visco-elastic material, and it has been proposed in US Patent No. 3,537,717 to place such a strip on the upper face of the ski in its entire area extending from the location of attachment of the boot until the birth of the tip. Experience has shown, however, that in both cases the problem of vibrations is poorly resolved, since the vibrations are suppressed without any selection, which ultimately results in the ski probably no longer vibrating, but has entirely lost its essential characteristics. stability and attachment.

Considérant que, si certaines vibrations sont néfastes, tout au moins lorsqu'elles dépassent une certaine amplitude, la présence de certaines autres vibrations est au contraire favorable lorsqu'elles ne dépassent pas un certain niveau, la Demanderesse a revendiqué dans ses brevets US N° 4.405.149 et N° 4.43&946 des skis comportant, Intégrées dans leur structure, des bandes ..de matériau visco-élastique dont la position et la longueur sont déterminées en fonction des vibrations à amortir et par conséquent en fonction des caractéristiques que le ski doit présenter, suivant qu'il s'agit, par exemple, d'un ski de slalom géant ou d'un ski de slalom spécial:

  • Des essais ont révélé à la Demanderesse que le même positionnement et le même dimensionnement sélectifs ne peuvent pas être favorablement mis en oeuvre si les systèmes amortisseurs sont constitués par des couches de matériau visco-élastique contraint par des plaques à haut module d'élasticité et si ces systèmes sont placés en surface sur le ski. Ce positionnement et ce dimensionnement posent un problème.
Considering that, if certain vibrations are harmful, at least when they exceed a certain amplitude, the presence of certain other vibrations is on the contrary favorable when they do not exceed a certain level, the Applicant has claimed in its US Pat. 4.405.149 and N ° 4.43 & 946 of the skis comprising, Integrated in their structure, bands . .of viscoelastic material, the position and length of which are determined as a function of the vibrations to be damped and therefore as a function of the characteristics which the ski must have, depending on whether it is, for example, a slalom ski giant or a special slalom ski:
  • Tests have revealed to the Applicant that the same positioning and the same selective dimensioning cannot be favorably implemented if the damping systems are constituted by layers of visco-elastic material constrained by plates with high elasticity modulus and if these systems are placed on the surface of the ski. This positioning and this dimensioning pose a problem.

L'invention résoud ce problème. Elle a pour objet un ski comportant extérieurement au moins un tel système amortisseur qui présente une longueur comprise entre 5 et 20 centimètres et dont le centre est placé à proximité soit du talon du ski, soit de la naissance de sa spatule, soit de l'avant de la zone de fixation de la chaussure.The invention solves this problem. Its purpose is a ski externally comprising at least one such shock absorber system which has a length of between 5 and 20 centimeters and the center of which is placed near either the heel of the ski, or the start of its tip, or the front of the binding area of the shoe.

Dans un ski conforme à l'invention, le dispositif amortisseur possède donc une longueur réduite par rapport à la longueur portante du ski ; et son positionnement est fait dans des zones qui sont déterminées en fonction des types de vibrations qu'il est souhaitable d'amortir sur le ski considéré afin d'augmenter ses qualités.In a ski according to the invention, the damping device therefore has a reduced length compared to the carrying length of the ski; and its positioning is done in zones which are determined according to the types of vibrations which it is desirable to absorb on the ski in question in order to increase its qualities.

Ces zones sont précises. Considérant par exemple un ski ayant pour une longueur totale de 2 mètres une distance de 180 centimètres entre son talon et sa ligne de contact avant avec la neige, ces zones sont comprises respectivement entre 10 à 20 %, 65 à 75 % et 85 à 97 % de cette distance, à partir du talon du ski.These areas are specific. Considering for example a ski having for a total length of 2 meters a distance of 180 centimeters between its heel and its front line of contact with the snow, these zones are comprised respectively between 10 to 20%, 65 to 75% and 85 to 97 % of this distance, from the ski heel.

Parmi les vibrations, ce sont celles de flexion dans un plan perpendiculaire à la neige qui méritent avant tout d'être considérées dans un ski de piste. Ces vibrations appartiennent essentiellement au "premier mode" et au "troisième mode".Among the vibrations, it is those of bending in a plane perpendicular to the snow which deserve above all to be considered in a piste ski. These vibrations essentially belong to the "first mode" and to the "third mode".

La figure 1 du dessin annexé représentant un ski vu très schématiquement de côté en élévation, les figures 2 et 3 représentent les déformées de ce ski en amplitude maximale, respectivement dans le premier mode de vibrations et dans le troisième mode de vibrations. Le premier mode est prédominant dans un ski de slalom spéciale le troisième mode est prédominant dans un ski de slalom géant.Figure 1 of the accompanying drawing showing a ski seen very schematically from the side in elevation, Figures 2 and 3 show the deformed shape of this ski in maximum amplitude, respectively in the first vibration mode and in the third vibration mode. The first mode is predominant in a special slalom ski the third mode is predominant in a giant slalom ski.

Les figures 4 et 5 du dessin annexé sont des vues en plan très schématique illustrant, à titre d'exemples, la position des systèmes amortisseurs dans deux skis pouvant être considérés l'un comme un ski de slalom spécial, et l'autre un ski de slalom géant, tous deux ayant une longueur portante de 180 centimètres pour une longueur totale de 2 mètres.Figures 4 and 5 of the accompanying drawing are very schematic plan views illustrating, by way of example, the position of the shock absorber systems in two skis which can be considered one as a special slalom ski, and the other a ski giant slalom, both having a bearing length of 180 centimeters for a total length of 2 meters.

Le ski de la figure 4 comporte deux systèmes amortisseurs respectivement (la) et (lb). Ils ont chacun une longueur de 15 centimètres. Le centre de celui (la) est placé à une distance de 27,5 centimètres du talon du ski, et le centre de celui (lb) est situé à 167 centimètres de ce talon.The ski of FIG. 4 comprises two damping systems respectively (la) and (lb). They are each 15 centimeters long. The center of that (la) is placed at a distance of 27.5 centimeters from the ski heel, and the center of that (lb) is located 167 centimeters from this heel.

Le ski de la figure 5 comporte un seul système amortisseur (2). Il a une longueur de 20 centimètres ; et son centre est placé à 128 centimètres du talon du ski.The ski of Figure 5 has a single shock absorber system (2). It has a length of 20 centimeters; and its center is placed 128 centimeters from the ski heel.

Chaque dispositif amortisseur placé sur le ski est constitué par une ou plusieurs couches de matériau visco-élastique assemblées par collage avec une ou plusieurs plaques de contrainte réalisées en un matériau à haut module d'élasticité, tel qu'alliage d'aluminium ou stratifié à base de résine et de fibres de verre ou de fibres de carbone.Each shock absorbing device placed on the ski consists of one or more layers of visco-elastic material assembled by bonding with one or more stress plates made of a material with high elasticity modulus, such as aluminum alloy or laminate with based on resin and glass fibers or carbon fibers.

Quel que soit son emplacement sur le ski, le dispositif amortisseur peut être fixé de façon immuable. Suivant une variante d'exécution et conformément à une autre caractéristique de l'invention, le dispositif amortisseur peut toutefois être monté déplaçable sur le ski, afin de permettre au skieur d'adapter la position de l'amortisseur en fonction des vibrations dont le skieur souhaite la disparition partielle ou totale.

  • Les figures 6, 7 et 8 sont des vues en coupe transversale de trois formes d'exécution d'un dispositif amortisseur conforme à l'invention ;
  • Figure 9 est une vue en plan par dessus de l'amortisseur représenté à la figure 8 et ;
  • Figure 10 est une vue en coupe longitudinale d'une autre variante d'exécution du dispositif amortisseur.
Whatever its location on the ski, the shock absorbing device can be fixed immutable. According to an alternative embodiment and in accordance with another characteristic of the invention, the shock absorber device can however be mounted movable on the ski, in order to allow the skier to adapt the position of the shock absorber according to the vibrations including the skier. wishes partial or total disappearance.
  • Figures 6, 7 and 8 are cross-sectional views of three embodiments of a damping device according to the invention;
  • Figure 9 is a plan view from above of the damper shown in Figure 8 and;
  • Figure 10 is a longitudinal sectional view of another alternative embodiment of the damping device.

Dans le cas représenté à la figure 6, (3) désigne le corps d'un ski sur la face supérieure duquel est placé un dispositif amortisseur désigné de façon générale par (4). Ce dispositif est constitué par une bande de matériau visco-élastique (5) liée. par collage avec une plaque (6) réalisée en un matériau à haut module d'élasticité, par exemple, du "zicral". Ce dispositif amortisseur est fixé sur le ski (3) par collage de sa face inférieure sur la face supérieure du ski.In the case shown in FIG. 6, (3) designates the body of a ski on the upper face of which is placed a damping device generally designated by (4). This device consists of a strip of visco-elastic material (5) linked. by bonding with a plate (6) made of a material with a high modulus of elasticity, for example, "zicral". This damping device is fixed to the ski (3) by bonding its lower face to the upper face of the ski.

Le dispositif amortisseur travaillant au cisaillement, il est possible d'augmenter ses effets en augmentant le nombre des couches de matériau visco-élastique. Il en est ainsi dans le cas du dispositif amortisseur représenté à la figure 7. Il est constitué par deux couches de matériau visco-élastique respectivement (7) et (8) qui sont séparées par une plaque (9) constituée en "zicral" ou en tout autre matériau à haut module d'élasticité. Les trois éléments (7), (8) et (9) sont assemblés par collage des deux bandes (7) et (8) respectivement sur et sous la plaque (9) ; et cet ensemble est fixé à la fois sur la face supérieure du ski (10) et à l'intérieur d'un capot (11) qui est constitué en un matériau à haut module d'élasticité, par exemple en "zicral" et qui possède deux ailes longitudinales (12) par lesquelles il est fixé sur le ski, par exemple par collage ou par vissage.The damping device working in shear, it is possible to increase its effects by increasing the number of layers of visco-elastic material. This is the case in the case of the damping device represented in FIG. 7. It is constituted by two layers of visco-elastic material respectively (7) and (8) which are separated by a plate (9) constituted in "zicral" or in any other material with high modulus of elasticity. The three elements (7), (8) and (9) are assembled by bonding the two strips (7) and (8) respectively on and under the plate (9); and this assembly is fixed both on the upper face of the ski (10) and inside a cover (11) which is made of a material with high elasticity modulus, for example in "zicral" and which has two longitudinal wings (12) by which it is fixed to the ski, for example by gluing or by screwing.

Dans le cas de la variante d'exécution représentée aux figures 8 et 9, le dispositif amortisseur comprend une plaque inférieure (13) et un profilé (.14) qui sont constitués en un matériau à haut module d'élasticité, par exemple en "zicral". Le profilé (14) présente une partie longitudinale médiane (14a) collée sur la plaque (13) et dans laquelle sont découpées plusieurs lumières longitudinales (15) traversées chacune par une vis (16) destinée à la fixation du dispositif amortisseur sur la face supérieure du ski. De part et d'autre de sa zone centrale (14a), le profilé (14) comporte deux ailes surélevées (17) qui sont parallèles à la plaque (13) et à la face supérieure du ski et délimitent ainsi une cage dans laquelle sont superposées une bande de matériau visco-élastique (18), une plaque à haut module d'élasticité (19) et une bande de matériau visco-élastique (20). Les trois éléments (18), (19) et (20) sont liés entre eux par collage ; celui (18) est collé avec la plaque (13), et celui (20) est collé avec l'aile (17) du profilé (14).In the case of the alternative embodiment shown in FIGS. 8 and 9, the damping device comprises a lower plate (13) and a profile (.14) which are made of a material with a high modulus of elasticity, for example in " zicral ". The profile (14) has a central longitudinal part (14a) glued to the plate (13) and in which are cut several longitudinal slots (15) each traversed by a screw (16) intended for fixing the damping device on the upper face ski. On either side of its central zone (14a), the profile (14) comprises two raised wings (17) which are parallel to the plate (13) and to the upper face of the ski and thus delimit a cage in which are superimposed a strip of visco-elastic material (18), a plate with high elastic modulus (19) and a strip of visco-elastic material (20). The three elements (18), (19) and (20) are linked together by gluing; the one (18) is glued with the plate (13), and the one (20) is glued with the wing (17) of the profile (14).

L'ensemble constitue un dispositif amortisseur dont la position longitudinale sur le ski est réglable. Ce réglage est obtenu en faisant coulisser l'amortisseur sur le ski grâce aux lumières (15) de la partie centrale (14a). Lorsque la position adéquate a été donnée au dispositif amortisseur sur le ski, l'immobilisation est obtenue par serrage des vis (16).The assembly constitutes a shock-absorbing device whose longitudinal position on the ski is adjustable. This adjustment is obtained by sliding the shock absorber on the ski using the lights (15) in the central part (14a). When the appropriate position has been given to the damping device on the ski, immobilization is obtained by tightening the screws (16).

Un dispositif de réglage de l'emplacement du dispositif amortisseur en vue de moduler son efficacité est évidemment possible dans le cas de la forme d'exécution précédemment décrite en référence à la figure 7. Dans ce cas, en effet, les deux ailes longitudinales (12) du capot (11) comportent des lumières longitudinales traversées par les vis de fixation du capot, et ce capot est muni d'une plaque inférieure par laquelle il est lié au ski.A device for adjusting the location of the damping device with a view to modulating its efficiency is obviously possible in the case of the embodiment previously described with reference to FIG. 7. In this case, in fact, the two longitudinal wings ( 12) of the hood (11) have longitudinal lights through which the hood fixing screws pass, and this hood is provided with a lower plate by which it is linked to the ski.

La figure 10 représente une autre variante d'exécution du dispositif amortisseur. Il est constitué par une couche de matériau visco-élastique (22) sur laquelle sont superposées deux plaques à haut module d'élasticité, respectivement (23) et (24), entre lesquelles est prévu un contact lubrifié, par exemple au moyen de graisse à base de silicone. Le coefficient de frottement f entre les deux plaques (23) et (24) est donc faible. Au contraire, grâce à une forte rugosité (25) de la face supérieure du ski, un coefficient de frottement f2 beaucoup plus grand que f est prévu entre le ski et la couche (22) de matériau visco-élastique. Ce dispositif amortisseur est fixé sur le ski au moyen de vis (26). Pour permettre de régler l'efficacité du dispositif amortisseur, des lumières longitudinales traversées par les vis (26) peuvent être prévues dans les deux plaques (23) et (24).Figure 10 shows another alternative embodiment of the damping device. It consists of a layer of visco-elastic material (22) on which are superimposed two high modulus plates of elasticity, respectively (23) and (24), between which a lubricated contact is provided, for example by means of silicone-based grease. The coefficient of friction f between the two plates (23) and (24) is therefore low. On the contrary, thanks to the high roughness (25) of the upper face of the ski, a coefficient of friction f 2 much greater than f is provided between the ski and the layer (22) of visco-elastic material. This damping device is fixed to the ski by means of screws (26). To allow the efficiency of the damping device to be adjusted, longitudinal lights through which the screws (26) pass can be provided in the two plates (23) and (24).

Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de ce dispositif amortisseur, non plus qu'aux seuls moyens qui ont été indiqués, en vue de permettre le réglage de leur position sur le ski ; elle en embrasse, au contraire, toutes les variantes, quel que soit le type du ski auquel le ou les amortisseurs sont adaptés : ski de descente, ski de slalom spécial, ski de slalom géant, ski de tourisme, ski de randonnée, monoski...It goes without saying that the invention is not limited to the sole embodiments of this damping device, nor to the only means which have been indicated, in order to allow the adjustment of their position on the ski; on the contrary, it embraces all variants, regardless of the type of ski to which the shock absorber (s) are adapted: downhill skiing, special slalom skiing, giant slalom skiing, touring ski, touring ski, monoski. ..

Claims (8)

1 - Ski de neige comportant sur sa face supérieure au moins un dispositif amortisseur de vibrations constitué par au moins une couche de matériau visco-élastique contraint par au moins une plaque à haut module d'élasticité, caractérisé en ce que ce dispositif présente une longueur comprise entre 5 et 20 centimètres et en ce que son centre est placé à proximité soit du talon du ski, soit de la naissance de sa spatule, soit de l'avant de la zone de fixation de la chaussure.1 - Snow skiing comprising on its upper face at least one vibration damping device constituted by at least one layer of visco-elastic material constrained by at least one plate with high modulus of elasticity, characterized in that this device has a length between 5 and 20 centimeters and in that its center is placed near either the heel of the ski, or the birth of its tip, or the front of the binding area of the boot. 2 - Ski. de neige selon la revendication 1, caractérisé en ce que le ou les dispositifs amortisseurs sont centrés chacun dans l'une des trois zones situées à une distance respective de 10 à 20 %, de 65 à 75 % et de 85 à 97 % de la longueur portante du ski à partir de son talon.2 - Ski. snow according to claim 1, characterized in that the damping device (s) are each centered in one of the three zones located at a distance of 10 to 20%, 65 to 75% and 85 to 97% of the carrying length of the ski from its heel. 3 - Ski de neige selon les revendications 1 et 2, caractérisé en ce que chacune de ses bandes (la, lb, 2) servant d'amortisseur est constituée par une ou plusieurs couches de matériau visco-élastique assemblées par collage avec une ou plusieurs plaques de contrainte réalisées en un matériau à haut module d'élasticité, tel qu'alliage d'aluminium ou stratifié à base de résine et de fibres de verre ou de fibres de carbone.3 - Snow ski according to claims 1 and 2, characterized in that each of its bands (la, lb, 2) serving as a shock absorber consists of one or more layers of visco-elastic material assembled by bonding with one or more stress plates made of a material with high modulus of elasticity, such as an aluminum alloy or laminate based on resin and glass fibers or carbon fibers. 4 - Ski de neige selon les revendications 1 à 3, caractérisé en ce que chacune de ses bandes (la, 1b, 2) servant d'amortisseur est montée déplaçable sur le ski, afin de permettre au skieur d'adapter la position de l'amortisseur en fonction des vibrations dont le skieur souhaite la disparition partielle ou totale.4 - Snow ski according to claims 1 to 3, characterized in that each of its bands (la, 1b, 2) serving as a shock absorber is movably mounted on the ski, in order to allow the skier to adapt the position of the 'shock absorber according to the vibrations which the skier wishes partial or total disappearance. 5 - Ski de neige selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque dispositif amortisseur (la, lb, 2) est constitué par une couche de matériau visco-élastique, (5) qui est collée sur la face supérieure du ski et sur laquelle est collée une plaque (6) réalisée en un matériau à haut module' d'élasticité.5 - Snow ski according to any one of claims 1 to 3, characterized in that each damping device (la, lb, 2) consists of a layer of visco-elastic material, (5) which is glued to the face upper part of the ski and onto which a plate (6) made of a material with high modulus of elasticity is glued. 6 - Ski de neige selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque dispositif amortisseur (la, lb, 2) est formé par une plaque inférieure (13) et un profilé (14) constitués en un matériau à haut module d'élasticité, le profilé (14) présentant une partie centrale (14a) située en retrait par rapport à deux ailes latérales (17) parallèles à la plaque (13) et délimitant avec elle une enceinte dans laquelle sont superposées une couche de matériau visco-élastique (18), une plaque en un matériau à haut module d'élasticité (19) et une couche de matériau visco-élastique (20), la partie centrale (14a) du profilé (14) et la plaque (13) comportant des lumières longitudinales (15) traversées par des vis (16) pour la fixation du dispositif amortisseur sur le ski.6 - Snow ski according to any one of claims 1 to 4, characterized in that each damping device (la, lb, 2) is formed by a bottom plate (13) and a profile (14) made of a material to high modulus of elasticity, the profile (14) having a central part (14a) set back with respect to two lateral wings (17) parallel to the plate (13) and delimiting with it an enclosure in which a layer of visco-elastic material (18), a plate made of a material with high elasticity modulus (19) and a layer of visco-elastic material (20), the central part (14a) of the profile (14) and the plate (13) comprising longitudinal slots (15) through which screws (16) pass for fixing the damping device to the ski. 7 - Ski de neige selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque dispositif amortisseur (la, lb, 2) comporte un capot (11) qui, fixé sur la face supérieure du ski par collage ou par vissage, délimite avec elle une enceinte dans laquelle sont superposées une couche de matériau visco-élastique (7), une plaque en un matériau à haut module d'élasticité (9) et une couche de matériau visco-élastique (3).7 - Snow ski according to any one of claims 1 to 4, characterized in that each damping device (la, lb, 2) comprises a cover (11) which, fixed to the upper face of the ski by gluing or by screwing , defines with it an enclosure in which are superposed a layer of visco-elastic material (7), a plate made of a material with high modulus of elasticity (9) and a layer of visco-elastic material (3). 8 - Ski de neige selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque dispositif amortisseur (la, lb, 2) est constitué par une bande de matériau visco-élastique (22) prenant appui sur une zone rugueuse (25) de la face supérieure du ski et par deux plaques (23, 24) constituées en un matériau à haut module d'élasticité et entre lesquelles le coefficient de frottement est inférieur à celui existant entre la bande de matériau visco-élastique (22) et la face supérieure du ski, l'ensemble bande (22) et plaques (23, 24) étant fixé par vissage sur le ski.8 - Snow ski according to any one of claims 1 to 4, characterized in that each damping device (la, lb, 2) consists of a strip of visco-elastic material (22) resting on a rough area ( 25) of the upper face of the ski and by two plates (23, 24) made of a material with high elasticity modulus and between which the coefficient of friction is lower than that existing between the strip of visco-elastic material (22) and the upper face of the ski, the strip (22) and plates (23, 24) assembly being fixed by screwing onto the ski.
EP85420241A 1984-12-27 1985-12-23 Snow ski Expired EP0188985B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85420241T ATE37145T1 (en) 1984-12-27 1985-12-23 SKI.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8420189A FR2575393A1 (en) 1984-12-27 1984-12-27 SNOW SKI
FR8420189 1984-12-27

Publications (2)

Publication Number Publication Date
EP0188985A1 true EP0188985A1 (en) 1986-07-30
EP0188985B1 EP0188985B1 (en) 1988-09-14

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Family Applications (1)

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EP85420241A Expired EP0188985B1 (en) 1984-12-27 1985-12-23 Snow ski

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Country Link
US (2) US4865345A (en)
EP (1) EP0188985B1 (en)
JP (2) JPS61172571A (en)
AT (1) ATE37145T1 (en)
CA (1) CA1259347A (en)
DE (1) DE3564909D1 (en)
ES (1) ES291245Y (en)
FR (1) FR2575393A1 (en)

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EP0966992A1 (en) 1998-06-25 1999-12-29 Skis Rossignol Sa Snowboard
FR2780295A1 (en) 1998-06-25 1999-12-31 Rossignol Sa Ski or snowboard with metal edges and reinforcing layer
US6113113A (en) * 1994-04-08 2000-09-05 Robert J. Harrington Sliding apparatus having adjustable flexion and torsion characteristics
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634135A1 (en) * 1988-07-18 1990-01-19 Fischer Gmbh PAIR OF SKIS, PARTICULARLY FOR ALPINE SKIING
US5035442A (en) * 1988-12-01 1991-07-30 Blizzard Ges. M.B.H. Ski with a damping element
FR2643431A1 (en) * 1989-02-20 1990-08-24 Rossignol Sa Damper device comprising viscoelastic materials
FR2660384A1 (en) * 1990-04-03 1991-10-04 Rossignol Sa Beam equipped with progressive vibration-damping device
FR2664823A1 (en) * 1990-07-19 1992-01-24 Rossignol Sa Alpine ski
US5413371A (en) * 1991-06-17 1995-05-09 Trimble; Alan M. Ski binding block
US5344176A (en) * 1991-06-17 1994-09-06 Trimble Alan M Ski binding block
US5431427A (en) * 1992-07-15 1995-07-11 Fischer Gesellschaft M.B.H. Ski having a binding mounting plate fitted above the ski body, at least partly at a distance therefrom and in fixed relationship thereto
EP0682962A1 (en) 1993-02-23 1995-11-22 HTM Sport- und Freizeitgeräte Aktiengesellschaft Vibration damping device
FR2706319A1 (en) * 1993-06-11 1994-12-23 Rossignol Sa Vibration damper fastened on the topsheet (upper face) of an alpine (downhill) ski
US6113113A (en) * 1994-04-08 2000-09-05 Robert J. Harrington Sliding apparatus having adjustable flexion and torsion characteristics
WO1998045001A1 (en) * 1997-04-08 1998-10-15 Harrington Robert J Snowboard having adjustable flexion and torsion characteristics
US5984343A (en) * 1997-04-08 1999-11-16 Robert J. Harrington Sliding apparatus having adjustable flexion and torsion characteristics
US6237932B1 (en) 1998-06-05 2001-05-29 Skis Rossignol S.A. Board for gliding on snow
EP0966992A1 (en) 1998-06-25 1999-12-29 Skis Rossignol Sa Snowboard
FR2780294A1 (en) 1998-06-25 1999-12-31 Rossignol Sa SNOW SNOWBOARD
FR2780295A1 (en) 1998-06-25 1999-12-31 Rossignol Sa Ski or snowboard with metal edges and reinforcing layer
EP3845279A1 (en) * 2019-11-25 2021-07-07 ATOMIC Austria GmbH Ski or snowboard and method for its manufacture

Also Published As

Publication number Publication date
EP0188985B1 (en) 1988-09-14
ATE37145T1 (en) 1988-09-15
JPS61172571A (en) 1986-08-04
US4995630A (en) 1991-02-26
CA1259347A (en) 1989-09-12
JPH0588579U (en) 1993-12-03
DE3564909D1 (en) 1988-10-20
ES291245Y (en) 1986-12-01
US4865345A (en) 1989-09-12
JP2505202Y2 (en) 1996-07-24
FR2575393A1 (en) 1986-07-04
ES291245U (en) 1986-04-16

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