EP0267130A1 - Cross-country ski with a ski binding device - Google Patents

Cross-country ski with a ski binding device Download PDF

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Publication number
EP0267130A1
EP0267130A1 EP87420293A EP87420293A EP0267130A1 EP 0267130 A1 EP0267130 A1 EP 0267130A1 EP 87420293 A EP87420293 A EP 87420293A EP 87420293 A EP87420293 A EP 87420293A EP 0267130 A1 EP0267130 A1 EP 0267130A1
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EP
European Patent Office
Prior art keywords
arms
ski
boot
cross
shoe
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
EP87420293A
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German (de)
French (fr)
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EP0267130B1 (en
Inventor
Serge Soulhiard
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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Application filed by Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Priority to AT87420293T priority Critical patent/ATE51762T1/en
Publication of EP0267130A1 publication Critical patent/EP0267130A1/en
Application granted granted Critical
Publication of EP0267130B1 publication Critical patent/EP0267130B1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • 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 present invention relates to a cross-country ski equipped with a boot binding device, this binding device comprising means for the indirect articulation of the boot.
  • the tip of the boot does not remain fixed in position during the stride, but, relative to the upper part of the ski, it lifts and advances at the same time.
  • the lifting of the tip of the boot causes a parasitic effort for the skier facing upwards, called lifting effort.
  • the object of the invention is to favor the advancement of the tip of the shoe relative to its lifting, in order to reduce as much as possible the parasitic lifting effort, and lengthen the stride accordingly.
  • the upper part of the ski body has two transverse recesses, symmetrical with respect to the longitudinal axis of the ski, extending over a defined portion of the ski starting under the tip of the boot and going towards the tip: these two recesses confer, on this upper part and on this ski portion, vertical lateral faces which allow against them the vertical movement of two first longitudinal arms. This vertical movement is effected by rotation of these two arms around their upstream ends, which are each articulated respectively on one of the two ends of a transverse axis which crosses these vertical lateral faces substantially under the toe of the shoe.
  • Figure 1 is partially shown a cross-country ski 1 which has a longitudinal rib 2 limited by an upper face 3 and by two inclined side faces 4 which connect this upper face to two edges 5 of reduced height.
  • the rib 2 is crossed by a transverse axis al 6 located below its upper face 3 and serving for the indirect articulation of the shoe.
  • the boot not shown here, has, over the entire length of its sole, a groove complementary to the rib 2 of the ski.
  • the binding of the shoe generally designated by 7.
  • This comprises, in a manner known per se, a stirrup 8 in the shape of an inverted U, the two branches of which extend on either side other of the rib 2 and are joined by a cross member 9 located above this rib.
  • the stirrup 8 is shaped for the interlocking of a complementary part, not shown here, formed at the front of the shoe, and it is equipped with means ensuring the immobilization and the locking of the front of the shoe on stirrup.
  • these means comprise a lever 10, also in the shape of an inverted U, which is outside the stirrup 8.
  • the lateral branches of this lever 10 are joined, near their axes of articulation 11,12, by a transverse shaft or axis 13 which can move in two lights in an arc 14 pierced in the two branches of the stirrup 8, concentrically with the articulation axis 11, 12 of the lever 10 on this stirrup.
  • the front of the shoe is pinched between the movable transveral axis 13 of the outer lever 10 and the fixed cross member 9 of the stirrup 8.
  • the upper face of the cross-member 9 is provided with a groove
  • the lever 10 comprises a latching pallet 15 in this groove, this pallet being a pallet rocker associated with an elastic pallet return device in the latching position.
  • the bases of each of the branches of the inner stirrup 8 are joined by a cross member 16, offset in the direction of the shoe, and shaped so as to closely fit the contour of the rib 2 on which it comes to rest, and to be married by the groove of the sole of the shoe.
  • the fastening 7, which could be of a different type than that shown, is attached to a rotational assembly formed by the transverse axis 6 and two pairs of longitudinal arms 17,18 placed l 'one on top of the other and tap off at their downstream ends. These two pairs of longitudinal arms are placed on either side of the groove 2, which is shaped to allow simultaneous vertical movement of these two pairs of arms, by rotation about their common axis of articulation 6.
  • the rib 2 has, over at least the length of the arms 17, 18, two transverse recesses 19, symmetrical with respect to the longitudinal axis of the ski, which start under the toe of the boot to stop slightly downstream of the arms 17 , 18.
  • These recesses 19 give the rib 2, over a portion defined by their length L, vertical side faces 20 against which the arms 17, 18 can be struggled vertically.
  • the two arms 17 are made of an elastic material, such as an elastomer. They each include an insert 21 consisting of a small metal plate pierced with two holes which provide passage on the one hand to a screw 22 for securing the arm 17 and the base of the stirrup 8, and on the other hand to a positioning lug 23 which is integral with the stirrup 8. The whole of the fixing 7 is thus attached to the two elastic arms 17.
  • the downstream ends 24.25 of the elastic arms 17 are secured, by means of a crosspiece 26 passing over the ski and two screws 27.28. at the downstream ends of the longitudinal arms 18, which are rigid arms.
  • the cross 26 er the two arms 18 are for example molded in one piece.
  • the arms 17 are pressed against the arms 18.
  • the rigid arms 18 are articulated upstream around the axis 6 which crosses the groove 2.
  • a transverse bar 29 secured to the stirrup 8 at its downstream base is in contact with the upper part of the ski.
  • the starting position, just before the stride, is that of FIG. 2.
  • the rear cross member 16 rests on the groove 2 of the ski, if only because the boot presses on it, and the front cross member 26 is clearly at above the upper face 3 of the groove 2.
  • the acute angle between the two arms 17 and 18 has a zero value.
  • the distance between axis 6 and axis 12 is then d.
  • the superimposed arms 17, 18 could both be elastic, and even made in one piece, the axis 6 then being able to be locked in rotation.
  • the arms 17, 18 could both be rigid, articulated one on the other at their downstream ends by means of a hinge pin, and brought back into position after the stride by means of a spring of traction for example, this spring being tensioned between their upstream ends.
  • the axis 6 can be an axis locked in angular position, taken from the mass of the ski for example, but be constituted by a torsion bar, forming both a joint and a return spring. Equivalently, this axis 6 can be fixed in rotation and in torsion, and the upstream ends of the arms 18 can be articulated on it by means of a spiral return spring, etc.
  • the superimposed arms 17-18 also both elastic, could be in a prestressed state when the fixing is in the rest position, the angle a then no longer being zero. This prestress would increase the value of the elastic return of the binding.
  • this binding principle can be adapted to a cross-country ski conventionally of rectangular section.
  • the upper part of the ski has on at least the length of the arms 17-18 two transverse recesses 19 symmetrical with respect to the median longitudinal axis of the ski which start under the toe of the boot to stop slightly downstream of the arms 17-18.
  • These recesses 19 confer on the upper part of the ski a portion defined by their length L, lateral lateral forces 20 against which the arm 17-18 can struggle vertically.
  • the invention is applicable whatever the different possible positions of the axis 6 in height in the recess 19, to obtain a prestressing of the elastic arms, the different respective lengths of the arms 17-18 which will determine d, to adjust the advance of the front of the shoe during the stride, the different densities of the plastic used to make the arms 17-18, to increase or decrease the value of the elastic return of the binding, so that the return energy of the binding can be adapted to the needs of the skier, in particular its weight and its type of evolution on snow.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

1. Cross-country ski equipped with a device for fixing the boot, this fixing device comprising means for indirect articulation of the boot, characterised - in that the upper part (2) of the body of the ski has two transverse recesses (19), which are symmetrical in relation of the medial longitudinal axis of the ski, extending along a defined section (L) of the ski starting under the point intended for the point of the boot and continuing in the direction of the tip, these two recesses (19) giving to this upper part (2) and this section (L) of the ski two vertical lateral sides (20) which between them allow the vertical passage of two first longitudinal arms (18), this vertical passage occurring by means of the rotation of these two arms around their higher ends, each of which is articulated to one of the two ends of a transverse shaft (6) which crosses these lateral sides approximately under the point intended for the point of the boot, - in that the lower ends of these two arms provide articulation for the lower ends (24, 25) of two second longitudinal arms (17), each placed above the first linked arm (18), in the same vertical plane and so as to form an acute angle (a) with this first arm (18), - and in that the higher sections of these two arms serve to attach the boot-fixing device (7) directly to them, the first arms being lowered when the back of the boot is lifted on striding, whilst at the same time the angle (a) between each first and second arm increases and the point of the boot moves forward, on the upper part (3) of the ski, the means (17, 16) being in addition provided on the rotating structure formed by the transverse shaft (6) and the four longitudinal arms (17, 18) to return automatically the back of the foot to its starting position after the stride.

Description

La présente invention se rapporte à un ski de fond équipé d'un dispositif de fixation de la chaussaure, ce dispositif de fixation comportant des moyens pour l'articulation indirecte de la chaussure.The present invention relates to a cross-country ski equipped with a boot binding device, this binding device comprising means for the indirect articulation of the boot.

Que la progression à ski de fond s'effectue selon la technique du pas alternatif, ou selon la technique de pas de patineur, il y a toujours, à chaque foulée, soulèvement de la partie arrière de la chaussure, qui tend donc à tourner autour de sa pointe tandis que le ski reste au sol. Le soulèvement de l'arrière de la chaussure est beaucoup plus importante dans le cas du pas alternatif que dans celui du pas de patineur.Whether the progression in cross-country skiing is done using the alternative step technique, or the skater step technique, there is always, with each stride, lifting of the rear part of the shoe, which therefore tends to turn around of its tip while the ski remains on the ground. The lifting of the back of the shoe is much more important in the case of the alternative step than in that of the skater's step.

Avec les fixations connues actuellement, la pointe de la chaussure ne reste pas fixe en position lors de la foulée, mais, par rapport à la partie supérieure du ski, elle se soulève et avance à la fois. Le soulèvement de la pointe de la chaussure entraîne un effort parasite pour le skieur orienté vers le haut, dit effort de levée.With the bindings currently known, the tip of the boot does not remain fixed in position during the stride, but, relative to the upper part of the ski, it lifts and advances at the same time. The lifting of the tip of the boot causes a parasitic effort for the skier facing upwards, called lifting effort.

L'invention a pour but de privilégier l'avancée de la pointe de la chaussure par rapport à sa levée, afin de réduire le plus possible l'effort parasite de levée, et allonger la foulée en conséquence. Pour ceci :
- La partie supérieure du corps du ski présente deux décrochements transversaux, symétriques par rapport à l'axe longitudinal du ski, s'étendant sur une portion définie du ski partant sous la pointe de la chaussure et allant en direction de la spatule : ces deux décrochements conférent, à cette partie supérieure et sur cette portion de ski, des faces latérales verticales qui autorisent contre elles le débattement vertical de deux premiers bras longitudinaux. Ce débattement vertical s'effectue par rotation de ces deux bras autout de leurs extrémités amont, qui sont articulées chacune respectivement sur l'une des deux extrémités d'un axe transversal qui traverse ces faces latérales verticales sensiblement sous la pointe de la chaussure.
- Les extrémitées aval de ces deux bras servent d'articulation aux extrémités aval de deux deuxièmes bras longitudinaux, placés respectivement chacun au dessus du premier bras associé, dans un même plan vertcial et de manière à former un angle aigu avec ce premier bras.
- Les parties amont de ces deuxièmes bras servent à leur raccorder directement le dispositif de fixation de la chaussure.
- Les premiers bras s'abaissent quand l'arrière de la chaussure est soulevé lors d'une foulée, tandis que simultanément l'angle entre chaque premier et deuxiéme bras augmente et que la pointe de la chaussure avance. Cet ensemble rotationnel formé par l'axe transversal et les quatre bras longitudinaux est agencé pour ramener automatiquement l'arrière de la chaussure en position de départ après la foulée.The object of the invention is to favor the advancement of the tip of the shoe relative to its lifting, in order to reduce as much as possible the parasitic lifting effort, and lengthen the stride accordingly. For this :
- The upper part of the ski body has two transverse recesses, symmetrical with respect to the longitudinal axis of the ski, extending over a defined portion of the ski starting under the tip of the boot and going towards the tip: these two recesses confer, on this upper part and on this ski portion, vertical lateral faces which allow against them the vertical movement of two first longitudinal arms. This vertical movement is effected by rotation of these two arms around their upstream ends, which are each articulated respectively on one of the two ends of a transverse axis which crosses these vertical lateral faces substantially under the toe of the shoe.
- The downstream extremities of these two arms serve as articulation at the downstream ends of two second longitudinal arms, each placed respectively above the first associated arm, in the same vertical plane and so as to form an acute angle with this first arm.
- The upstream parts of these second arms are used to directly connect the shoe fixing device to them.
- The first arms are lowered when the rear of the shoe is lifted during a stride, while simultaneously the angle between each first and second arms increase and the tip of the shoe advances. This rotational assembly formed by the transverse axis and the four longitudinal arms is arranged to automatically return the rear of the shoe to the starting position after the stride.

L'invention sera bien comprise, et ses avantages ainsi que d'autres caractéristiques ressortiront, au cours de la description suivante d'un exemple non limitatif de réalisation, en référence aux dessins schématiques annexés dans lesquels :

  • - Figure 1 est une vue en perspective du dispositif de l'invention ;
  • - Figure 2 est une vue de côté simplifiée de ce dispositif ;
  • - Figure 3 est une vue similaire à la figure 2, avec l'étrier basculé vers l'avant au cours d'une foulée ;
  • - Figure 4 est une vue de côté agrandie, avec coule partielle, de ce dispositif ;
  • - Figure 5 est une coupe transversale selon la ligne V-V de la figure 4;
  • - Figure 6 est une vue en perspective d'une variante de ce dispositif.
The invention will be clearly understood, and its advantages as well as other characteristics will emerge during the following description of a nonlimiting exemplary embodiment, with reference to the appended schematic drawings in which:
  • - Figure 1 is a perspective view of the device of the invention;
  • - Figure 2 is a simplified side view of this device;
  • - Figure 3 is a view similar to Figure 2, with the stirrup tilted forward during a stride;
  • - Figure 4 is an enlarged side view, with partial flow, of this device;
  • - Figure 5 is a cross section along the line VV of Figure 4;
  • - Figure 6 is a perspective view of a variant of this device.

Sur la figure 1 est partiellement représenté un ski de fond 1 qui présente une nervure longitudinale 2 limitée par une face supérieure 3 et par deux faces latérales inclinées 4 qui raccordent cette face supérieure à deux chants 5 de hauteur réduite. La nervure 2 est traversée par un axe transvers al 6 situé en dessous de sa face supérieure 3 et servant à l'articulation indirecte de la chaussure. La chaussure, non représentée ici, comporte, sur toute la longeur de sa semelle, une rainure complémentaire de la nervure 2 du ski.In Figure 1 is partially shown a cross-country ski 1 which has a longitudinal rib 2 limited by an upper face 3 and by two inclined side faces 4 which connect this upper face to two edges 5 of reduced height. The rib 2 is crossed by a transverse axis al 6 located below its upper face 3 and serving for the indirect articulation of the shoe. The boot, not shown here, has, over the entire length of its sole, a groove complementary to the rib 2 of the ski.

Sur l'axe 6 est articulée la fixation de la chaussure, désignée généralement par 7. Celle-ci comporte, de manière en soi connue, un étrier 8 en ferme de U renversé, dont les deux branches s'étendent de part et d'autre de la nervure 2 et sont réunies par une traverse 9 située au-dessus de cette nervure. L'étrier 8 est conformé pour l'emboîtement d'une partie complémentaire, non représentee ici, formée à l'avant de la chaussure, et il est équipé de moyens assurent l'immobilisation et le verrouillage de l'avant de la chaussure sur l'étrier. Dans cet example, ces moyens comportent un levier 10, également en forme de U renversé, qui est extérieur à l'étrier 8. Les branches latérales de ce levier 10 sont réunies, pres de leurs axes d'articulation 11,12, par un arbre ou axe transversal 13 qui peut se mouvoir dans deux lumières en arc de cercle 14 percées dans les deux branches de l'étrier 8, concentriquement à l'axe d'articulation 11, 12 du levier 10 sur cet étrier. Lorsque l'on verrouille la fixation en relevant le levier 10, l'avant de la chaussure se trouve pincé entre l'axe transveral mobile 13 du levier extérieur 10 et la traverse fixe 9 de l'étrier 8. Des moyens sont prévus pour maintenir l'étrier 8 et le levier 10 de la fixation en position verrouillée : la face supérieure de la traverse 9 est pourvue d'une rainure, tandis que le levier 10 comporte une palette d'encliquetage 15 dans cette rainure, cette palette étant une palette à bascule associée à un dispositif de rapel élastique de la palette en position d'encliquetage. Par ailleurs, les bases de chacune des branches de l'étrier intérieur 8 sont réunies par une traverse 16, décalée en direction de la chaussure, et profilée de maniére à èpouser ètroitement le contour de la nervure 2 sur laquelle elle vient reposer, et à être épousée par la rainure de la semelle de la chaussure. Ce type de fixation, qui ne forme pas en soi l'objet de l'invention, est décrit dans les demandes françaises N o 85 18723 et 86 10119, déposées par la demanderesse, respectivement le 5 Décembre 1985 et le 30 Juin 1986, toutes deux sous le titre "dispositif destiné à la fixation d'une chaussure sur un ski de fond".On the axis 6 is articulated the binding of the shoe, generally designated by 7. This comprises, in a manner known per se, a stirrup 8 in the shape of an inverted U, the two branches of which extend on either side other of the rib 2 and are joined by a cross member 9 located above this rib. The stirrup 8 is shaped for the interlocking of a complementary part, not shown here, formed at the front of the shoe, and it is equipped with means ensuring the immobilization and the locking of the front of the shoe on stirrup. In this example, these means comprise a lever 10, also in the shape of an inverted U, which is outside the stirrup 8. The lateral branches of this lever 10 are joined, near their axes of articulation 11,12, by a transverse shaft or axis 13 which can move in two lights in an arc 14 pierced in the two branches of the stirrup 8, concentrically with the articulation axis 11, 12 of the lever 10 on this stirrup. When the binding is locked by raising the lever 10, the front of the shoe is pinched between the movable transveral axis 13 of the outer lever 10 and the fixed cross member 9 of the stirrup 8. Means are provided to maintain the stirrup 8 and the lever 10 of the fixing in the locked position: the upper face of the cross-member 9 is provided with a groove, while the lever 10 comprises a latching pallet 15 in this groove, this pallet being a pallet rocker associated with an elastic pallet return device in the latching position. Furthermore, the bases of each of the branches of the inner stirrup 8 are joined by a cross member 16, offset in the direction of the shoe, and shaped so as to closely fit the contour of the rib 2 on which it comes to rest, and to be married by the groove of the sole of the shoe. This type of fixing, which does not form in itself the object of the invention is described in French applications 85 18723 and No. 86 10119 filed by the applicant respectively December 5, 1985 and June 30, 1986, all two under the title "device intended for fixing a boot on a cross-country ski".

Comme on le voit mieux sur la figure 4, la fixation 7, qui pourrait être d'un autre type que celui représenté, est rapportée sur un ensemble rotationnel formé par l'axe transversal 6 et deux couples de bras longitudinaux 17,18 placés l'un sur l'autre et rénuis par leurs extrémités aval. Ces deux couples de bras longitudinaux sont placés de part et d'autre de la rainure 2, qui est conformée pour autoriser un débattement vertical simultané de ces deux couples de bras, par rotation autour de leur axe commun d'articulation 6. Pour ceci, la nervure 2 présente, sur au moins la longueur des bras 17,18, deux décrochements transversaux 19, symétriques par rapport à l'axe longitudinal du ski, qui partent sous la pointe de la chaussure pour s'arrêter légèrement en aval des bras 17,18. Ces décrochements 19 confèrent à la nervure 2, sur une portion définie par leur longeur L, des faces latérales 20 verticales contre lesquelles peuvent se débattre verticalement les bras 17,18.As best seen in FIG. 4, the fastening 7, which could be of a different type than that shown, is attached to a rotational assembly formed by the transverse axis 6 and two pairs of longitudinal arms 17,18 placed l 'one on top of the other and tap off at their downstream ends. These two pairs of longitudinal arms are placed on either side of the groove 2, which is shaped to allow simultaneous vertical movement of these two pairs of arms, by rotation about their common axis of articulation 6. For this, the rib 2 has, over at least the length of the arms 17, 18, two transverse recesses 19, symmetrical with respect to the longitudinal axis of the ski, which start under the toe of the boot to stop slightly downstream of the arms 17 , 18. These recesses 19 give the rib 2, over a portion defined by their length L, vertical side faces 20 against which the arms 17, 18 can be struggled vertically.

Les deux bras 17 sont constitués d'un matériau élastique, tel qu'un élastomère. Ils comportent chacun un insert 21 constitué d'une petite plaque métallique percée de deux trous qui livrent passage d'une part à une vis 22 de solidarisation du bras 17 et de la base de l'étrier 8, et d'autre part à un ergot de positionnement 23 qui est solidaire de l'étrier 8. L'ensemble de la fixation 7 est ainsi rapportée sur les deux bras élastiques 17.The two arms 17 are made of an elastic material, such as an elastomer. They each include an insert 21 consisting of a small metal plate pierced with two holes which provide passage on the one hand to a screw 22 for securing the arm 17 and the base of the stirrup 8, and on the other hand to a positioning lug 23 which is integral with the stirrup 8. The whole of the fixing 7 is thus attached to the two elastic arms 17.

Les extrémités aval 24,25 des bras élastiques 17 sont solidarisées, au moyen d'une traverse 26 passant au-dessus du ski et de deux vis 27,28. aux extrémités aval des bras longitudinaux 18, qui sont des bras rigides. La traverse 26 er les deux bras 18 sont par exemple moulés d'une seule pièce. En position de repos, comme sur les figures 1,2 et 4 les bras 17 sont plaqués sur les bras 18. Par ailleurs, les bras rigides 18 sont articulés à l'amont autour de l'axe 6 qui traverse la rainure 2. Une barrette transversale 29 solidaire de l'étrier 8 à sa base aval est en contact avec la partie supérieure du ski.The downstream ends 24.25 of the elastic arms 17 are secured, by means of a crosspiece 26 passing over the ski and two screws 27.28. at the downstream ends of the longitudinal arms 18, which are rigid arms. The cross 26 er the two arms 18 are for example molded in one piece. In the rest position, as in FIGS. 1, 2 and 4, the arms 17 are pressed against the arms 18. Furthermore, the rigid arms 18 are articulated upstream around the axis 6 which crosses the groove 2. A transverse bar 29 secured to the stirrup 8 at its downstream base is in contact with the upper part of the ski.

Le fonctionnement de cette fixation est le suivant :The operation of this binding is as follows:

La position de départ, juste avant la foulée, est celle de la figure 2. la traverse arrière 16 repose sur la rainure 2 du ski, ne serait-ce que parce que la chaussure appuie sur elle, et la traverse avant 26 est nettement au-dessus de la face supérieure 3 de la rainure 2. L'angle aigu entre les deux bras 17 et 18 a une valeur nulle. La distance entre l'axe 6 et l'axe 12 est alors d.The starting position, just before the stride, is that of FIG. 2. the rear cross member 16 rests on the groove 2 of the ski, if only because the boot presses on it, and the front cross member 26 is clearly at above the upper face 3 of the groove 2. The acute angle between the two arms 17 and 18 has a zero value. The distance between axis 6 and axis 12 is then d.

Au cours de la foulée, le skieur soulève son talon et tend à avancer la pointe du pied. La position prise par la fixation est alors celle de la figure 3 : l'ensemble rotationnel 17,18 tourne dans le sens horaire la travers 26 s'abaisse, la barrette 29 avance en glissant sur la partie supérieure 3 du ski, les bras élastiques 17 s'écartent des bras rigides 18 comme s'ils pivotaient autour de leurs extrémités aval 24,25, de sorte que l'angle a entre les bras 17 et 18 augmente. A la fin de la foulée, la traverse 26 s'est abaissée pour venir en contact avec la rainure 2. Par ces mouvements conjugués, la fixation 7 avance sur le ski, mais ne se soulève pratiquement pas. La distance entre l'axe 6 et l'axe 12 est devenue D. Lors de la foulée, l'avant de la chaussure a avancé de D-d, et l'effort de levée, parasite pour le skieur, est pratiquement supprimé par le fait que la barrette 29 avance en glissant sur la partie supérieure 3 du ski.During the stride, the skier lifts his heel and tends to advance the tiptoe. The position taken by the binding is then that of FIG. 3: the rotational assembly 17, 18 rotates clockwise the cross member 26 lowers, the bar 29 advances by sliding on the upper part 3 of the ski, the elastic arms 17 move away from the rigid arms 18 as if they pivoted around their downstream ends 24,25, so that the angle a between the arms 17 and 18 increases. At the end of the stride, the cross member 26 is lowered to come into contact with the groove 2. By these combined movements, the binding 7 advances on the ski, but practically does not lift. The distance between axis 6 and axis 12 has become D. During the stride, the front of the boot has advanced by Dd, and the lifting effort, parasitic for the skier, is practically eliminated by the fact that the bar 29 advances by sliding on the upper part 3 of the ski.

Après la foulée, la chaussure revient à plat sur le ski, en appuyant sur celui-ci la traverse 16. L'élasticité des bras 17 referme l'angle a, de sorte que les bras 17 reviennent se plaquer sur les bras 18. L'ensemble rotationnel 6,17,18 reprend donc sa position de départ de la figure 2. Une butée 30 située fixement dans le logement 20 empêche les bras 18 de pivoter dans le sens trigonométrique pour limiter la perte d'équilibre arrière du skieur.After the stride, the boot returns flat to the ski, by pressing it crosses it 16. The elasticity of the arms 17 closes the angle a, so that the arms 17 return to rest on the arms 18. L 'rotational assembly 6,17,18 therefore returns to its starting position in Figure 2. A stop 30 fixedly located in the housing 20 prevents the arms 18 to pivot counterclockwise to limit the loss of rear balance of the skier.

L'invention n'est bien évidemment pas limitée à l'exemple de réalisation qui vient d'être décrit, et est susceptible d'être réalisée de multiples façons équivalentes.The invention is obviously not limited to the embodiment which has just been described, and is capable of being carried out in multiple equivalent ways.

Par exemple, les bras superposés 17,18 pourraient être tous deux élastiques, et même réalisés d'une seule pièce, l'axe 6 pouvant alors être bloqué en rotation. A contrario, les bras 17,18 pouvaient être tous deux rigides, articulés l'un sur l'autre à leurs extrémités aval au moyen d'un axe d'articulation, et rappelés en position après la foulée au moyen d'un ressort de traction par exemple, ce ressort étant tendu entre leurs extrémités amont. L'axe 6 peut être un axe bloqué en position angulaire, pris dans la masse du ski par exemple, mais être constitué par une barre de torsion, formant à la fois articulation et ressort de rappel. De façon équivalente, cet axe 6 peut être fixe en rotation et en torsion, et les extrémités amont des bras 18 être articulées sur lui par l'intermédiaire d'un ressort spirale de rappel etc...For example, the superimposed arms 17, 18 could both be elastic, and even made in one piece, the axis 6 then being able to be locked in rotation. Conversely, the arms 17, 18 could both be rigid, articulated one on the other at their downstream ends by means of a hinge pin, and brought back into position after the stride by means of a spring of traction for example, this spring being tensioned between their upstream ends. The axis 6 can be an axis locked in angular position, taken from the mass of the ski for example, but be constituted by a torsion bar, forming both a joint and a return spring. Equivalently, this axis 6 can be fixed in rotation and in torsion, and the upstream ends of the arms 18 can be articulated on it by means of a spiral return spring, etc.

Suivant un autre exemple, les bras superposés 17-18, également tous deux élastiques, pourraient se trouver en état de précontrainte lorsque la fixation est en position de repos, l'angle a n'étant alors plus nul. Cette précontrainte augmenterait la valeur du rappel élastique de la fixation.According to another example, the superimposed arms 17-18, also both elastic, could be in a prestressed state when the fixing is in the rest position, the angle a then no longer being zero. This prestress would increase the value of the elastic return of the binding.

Suivant un autre exemple, schématisé à la figure 6, ce principe de fixation peut être adapté à un ski de fond classiquement de section rectangulaire. Pour ceci, la partie supérieure du ski présente sur au moins la longeur des bras 17-18 deux décrochements transversaux 19 symétriques par rapport à l'axe longitudinal médian du ski qui partent sous la pointe de la chaussure pour s'arrêter légèrement en aval des bras 17-18. Ces décrochements 19 confèrent à la partie supérieure du ski une portion définie par leur longueur L , des forces latérales 20 verticales contre lesquelles peuvent se débattre verticalement le bras 17-18.According to another example, shown diagrammatically in FIG. 6, this binding principle can be adapted to a cross-country ski conventionally of rectangular section. For this, the upper part of the ski has on at least the length of the arms 17-18 two transverse recesses 19 symmetrical with respect to the median longitudinal axis of the ski which start under the toe of the boot to stop slightly downstream of the arms 17-18. These recesses 19 confer on the upper part of the ski a portion defined by their length L, lateral lateral forces 20 against which the arm 17-18 can struggle vertically.

Comme il se doit, l'invention est applicable quels que soient les différents positionnements possibles de l'axe 6 en hauteur dans le décrochement 19, pout obtenir une précontrainte des bras élastiques, les différentes longueure respectives des bras 17-18 qui détermineront d, pour régler l'avance de l'avant de la chaussure au cours de la foulée, les différentes densités de la matière plastique retenue pour réaliser les bras 17-18, pour augmenter ou diminuer la valeur du rappel élastique de la fixation, de sorte que l'énergie de rappel de la fixation pourra être adaptée aux besoins du skieur , notamment son poids et son type d'évolution sur la neige. As it should be, the invention is applicable whatever the different possible positions of the axis 6 in height in the recess 19, to obtain a prestressing of the elastic arms, the different respective lengths of the arms 17-18 which will determine d, to adjust the advance of the front of the shoe during the stride, the different densities of the plastic used to make the arms 17-18, to increase or decrease the value of the elastic return of the binding, so that the return energy of the binding can be adapted to the needs of the skier, in particular its weight and its type of evolution on snow.

Claims (9)

1. Ski de fond équipé d'un dispositif de fixation de la chaussure, ce dispositif de fixation comportant des moyens pour l'articulation indirecte de la chaussure, caractérisé
- en ce que la partie supérieure (2) du corps du ski présente deux décrochements transversaux (19), symétriques par rapport à l'axe longitudinal médian du ski, s'étendant sur une portion définie (L) du ski partant sous la pointe de la chaussure et allant en direction de la spatule, ces deux décrochements (19) conférant, à cette partie supérieure (2) et sur cette portion (L) du ski, des faces latérales (20) verticales qui autorisent contre elles le débattement vertical de deux premiers bras longitudinaux (18), ce débattement vertical s'effectuant par rotation de ces deux bras autour de leurs extrémités amont, qui sont articulées chacune respectivement sur l'une des deux extrémités d'un axe transversal (6) qui traverse ces faces latérales verticales (20) sensiblement sous la pointe de la chaussure,
- en ce que les extrémités aval de ces deux bras servent d'articulation aux extrémités aval (24,25) de deux deuxièmes bras longitudinaux (17), placés respectivement chacun au-dessus de premier bras associé (18), dans un même plan vertical et de manière à former un angle aigu (a) avec ce premier bras (18),
- et en ce que les parties amont de ces deuxièmes bras servent à leur raccorder directement le dispositif de fixation (7) de la chaussure,
les premiers bras s'abaissant quand l'arrière de la chaussure est soulevé lors d'une foulée, tandis que simultanément l'angle (a) entre chaque premier et deuxième bras augmente et que la pointe de la chaussure avance, sur la partie supérieure 3 du ski,des moyens (17,16) étant par ailleurs prévus sur l'ensemble rotationnel formé par l'axe transversal (6) et les quatre bras longitudinaux (17,18) pour ramener automatiquement l'arrière de la chaussure en position de départ après la foulée.1. Cross-country ski equipped with a shoe fixing device, this fixing device comprising means for the indirect articulation of the shoe, characterized
- in that the upper part (2) of the ski body has two transverse recesses (19), symmetrical with respect to the median longitudinal axis of the ski, extending over a defined portion (L) of the ski starting under the tip of the boot and going in the direction of the tip, these two recesses (19) giving, to this upper part (2) and on this portion (L) of the ski, vertical side faces (20) which allow vertical displacement against them of two first longitudinal arms (18), this vertical movement being effected by rotation of these two arms around their upstream ends, which are each articulated respectively on one of the two ends of a transverse axis (6) which passes through these vertical lateral faces (20) substantially under the toe of the shoe,
- in that the downstream ends of these two arms serve to articulate the downstream ends (24,25) of two second longitudinal arms (17), each placed respectively above the first associated arm (18), in the same plane vertical and so as to form an acute angle (a) with this first arm (18),
- and in that the upstream parts of these second arms are used to directly connect the fastening device (7) of the shoe to them,
the first arms lowering when the rear of the shoe is lifted during a stride, while simultaneously the angle (a) between each first and second arm increases and the tip of the shoe advances, on the upper part 3 of the ski, means (17,16) being moreover provided on the rotational assembly formed by the transverse axis (6) and the four longitudinal arms (17,18) for automatically bringing the rear of the boot back into position of departure after the stride. 2. Ski de fond avec dispositif de fixation selon la revendication 1, caractérise en ce qu'au moins un des bras longitudinaux (17) est en une matière élastique.2. Cross-country ski with binding device according to claim 1, characterized in that at least one of the longitudinal arms (17) is made of an elastic material. 3. ski de fond avec fixation selon la revendication 1 ou la revendication 2, caractérisé en ce que les extrémités aval des bras longitudinaux (17,18) sont réunies par une traverse (26) passant au-dessus du ski (1).3. cross-country ski with binding according to claim 1 or claim 2, characterized in that the downstream ends of the longitudinal arms (17,18) are joined by a crosspiece (26) passing above the ski (1). 4. Ski de fond avec fixation selon l'une des revendications 1 à 3, caractérisé en ce que les bras longitudinaux superposés (17,18) sont réalisés d'une seule pièce dans une matière élastique.4. Cross-country ski with binding according to one of claims 1 to 3, characterized in that the superimposed longitudinal arms (17,18) are made in one piece from an elastic material. 5. Ski de fond avec fixation selon l'une des revendications 1 à 4, caractérisé en ce que l'axe (6) qui traverse les faces latérales verticales (20) est un axe de torison qui est bloqué en rotation.5. Cross-country ski with binding according to one of claims 1 to 4, characterized in that the axis (6) which crosses the vertical lateral faces (20) is a torison axis which is blocked in rotation. 6. Ski de fond avec fixation selon l'une des revendications 1 à 4, caractérisé en ce que l'axe (6) qui traverse les faces latérales verticales (20) est bloqué en rotation et est relié aux premiers bras longitudinaux (18) par une liaison à ressort de rappel.6. Cross-country ski with binding according to one of claims 1 to 4, characterized in that the axis (6) which crosses the vertical lateral faces (20) is blocked in rotation and is connected to the first longitudinal arms (18) by a return spring connection. 7. Ski de fond avec fixation selon l'une des revendications 1 à 4, caractér isé en ce que le réglage du rappel élastique est obtenu en utilisant des bras élastiques (17,18) en matière plastique de différentes duretés pour augmenter ou diminuer la valeur du rappel élastique de la fixation.7. Cross-country ski with binding according to one of claims 1 to 4, characterized in that the adjustment of the elastic return is obtained by using elastic arms (17,18) of plastic material of different hardnesses to increase or decrease the value of the elastic return of the binding. 8. Ski de fond avec fixation selon l'une des revendications 1 à 4, caractérisé en ce que l'axe 6 peut se siteur à différentes hauteurs dans les faces latérales 20 pour obtenir une précontrainte des bras élastiques.8. Cross-country ski with binding according to one of claims 1 to 4, characterized in that the axis 6 can be sited at different heights in the lateral faces 20 to obtain a prestressing of the elastic arms. 9. Ski de fond avec fixation selon l'une des revendications 1 à 4, caractérisé en ce que la longeur des bras 17-18 est variable l'un par rapport à l'autre pour régler l'avancée de l'avant de la chaussure au cours de la foulée.9. Cross-country ski with binding according to one of claims 1 to 4, characterized in that the length of the arms 17-18 is variable relative to one another to adjust the advance of the front of the shoe during the stride.
EP87420293A 1986-10-29 1987-10-28 Cross-country ski with a ski binding device Expired - Lifetime EP0267130B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420293T ATE51762T1 (en) 1986-10-29 1987-10-28 CROSS-COUNTRY SKI WITH SKI BINDING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615258A FR2605889B1 (en) 1986-10-29 1986-10-29 CROSS-COUNTRY SKIING WITH ITS SHOE ATTACHMENT DEVICE
FR8615258 1986-10-29

Publications (2)

Publication Number Publication Date
EP0267130A1 true EP0267130A1 (en) 1988-05-11
EP0267130B1 EP0267130B1 (en) 1990-04-11

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ID=9340447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420293A Expired - Lifetime EP0267130B1 (en) 1986-10-29 1987-10-28 Cross-country ski with a ski binding device

Country Status (4)

Country Link
EP (1) EP0267130B1 (en)
AT (1) ATE51762T1 (en)
DE (1) DE3762185D1 (en)
FR (1) FR2605889B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227558B1 (en) 1998-02-27 2001-05-08 Salomon S.A. Interface device between a ski and the elements for retaining a boot on the ski

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540392A1 (en) * 1983-02-09 1984-08-10 Salomon & Fils F DEVICE FOR ATTACHING A SHOE TO A CROSS-COUNTRY OR HIKING SKI
EP0167462A1 (en) * 1984-05-29 1986-01-08 Skis Rossignol S.A. Combination consisting of a cross-country ski, a cross-country ski binding and a cross-country ski boot

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540392A1 (en) * 1983-02-09 1984-08-10 Salomon & Fils F DEVICE FOR ATTACHING A SHOE TO A CROSS-COUNTRY OR HIKING SKI
EP0167462A1 (en) * 1984-05-29 1986-01-08 Skis Rossignol S.A. Combination consisting of a cross-country ski, a cross-country ski binding and a cross-country ski boot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227558B1 (en) 1998-02-27 2001-05-08 Salomon S.A. Interface device between a ski and the elements for retaining a boot on the ski

Also Published As

Publication number Publication date
EP0267130B1 (en) 1990-04-11
FR2605889B1 (en) 1988-12-09
FR2605889A1 (en) 1988-05-06
DE3762185D1 (en) 1990-05-17
ATE51762T1 (en) 1990-04-15

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