EP0878217B1 - Pressure plate for safety binding - Google Patents

Pressure plate for safety binding

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Publication number
EP0878217B1
EP0878217B1 EP98810366A EP98810366A EP0878217B1 EP 0878217 B1 EP0878217 B1 EP 0878217B1 EP 98810366 A EP98810366 A EP 98810366A EP 98810366 A EP98810366 A EP 98810366A EP 0878217 B1 EP0878217 B1 EP 0878217B1
Authority
EP
European Patent Office
Prior art keywords
deformation
sole
elastic body
bearing plate
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.)
Expired - Lifetime
Application number
EP98810366A
Other languages
German (de)
French (fr)
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EP0878217A1 (en
Inventor
Frédéric Chonier
Daniel Rocca
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.)
Look Fixations SA
Original Assignee
Look Fixations SA
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Publication date
Application filed by Look Fixations SA filed Critical Look Fixations SA
Publication of EP0878217A1 publication Critical patent/EP0878217A1/en
Application granted granted Critical
Publication of EP0878217B1 publication Critical patent/EP0878217B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A63C9/001—Anti-friction devices
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable

Definitions

  • the present invention relates to a support plate for safety attachment of the front end of a ski boot on a ski, binding equipped with a shoe retainer by part of the sole protruding from the front end of the shoe pinched between the retainer and the support plate sandwiched between the ski and the boot, said plate support being compressible so as to adapt to variations in the thickness of the sole portion pinched between the support plate and the retaining member.
  • the thickness of the sole can vary by more or less a millimeter about. If the distance between the backing plate and the fixing retainer is fixed, the force with which the sole is pinched varies with the thickness of this sole. Pinch force excessive has the effect of increasing the values of triggering of the safety binding and therefore alters the safety of the skier. This is also the case when a binding, which was originally set for a child's sole, is used by an adult.
  • this cushioning material may exhibit progressive stiffness depending of its compression, because of its shape or the material who composes it.
  • the sole purpose of this material is to absorb shock and vibration, but such support plate will also tend to adapt, in some cases, to a variation in thickness of the sole.
  • the object of the invention is to produce a support plate systematically adapting to variations in thickness from the sole, especially as well to the soles children's shoes than shoe soles adult, offering greater resistance to weight of an adult than that of a child and capable also to bear deformations without fatigue repeated.
  • the support plate according to the invention is characterized in what it includes a precompressed elastic body between a mobile rigid element intended to support the sole and base linked to skiing and means of limitation of the deformation of the elastic body, these means consisting of at least one rigid face opposing the free deformation of the elastic body, in at least one direction, from a certain deformation of this elastic body, so that constitute a nonlinear system whose resistance to the pressure is relatively low in a first deformation range and significantly higher in a second deformation range.
  • the elastic body is in sleeve shape surrounding a rigid base, this base having, at least approximately, a form of trunk of pyramid or cone opposing the deformation of the sleeve from a certain degree of deformation.
  • the rigid element resting on the elastic body is advantageously surrounded and held vertically by a retaining body fixed to the ski.
  • the support plate according to the invention makes it possible to obtain relatively low pressure resistance in a first deformation range, for example two millimeters, and resistance to pressure significantly higher for deformation greater than two millimeters, for example between 2 millimeters and 3.5 millimeters, values corresponding to the maximum thickness of a shoe sole for adult.
  • the level of the support plate and with it the sole gripping force will therefore adapt more easily to variations in thickness of a sole of children's shoe.
  • Figure 1 is a perspective view, without the fixation, of the first embodiment.
  • Figure 2 shows a vertical sectional view longitudinal, along the plane of symmetry, with the binding shown and the front of a shoe child engaged in the fixation, represented in fine lines.
  • Figure 3 is a view similar to Figure 2 with a adult shoe engaged in binding.
  • Figure 4 shows the ideal deformation curve of the backing plate as a function of the force exerted on this backing plate.
  • Figure 5 shows some section variants of the elastic body.
  • Figure 6 is a longitudinal sectional view of a second embodiment with children's sole.
  • Figure 7 is a view similar to Figure 5 with adult sole.
  • FIG 1 there is a rigid element 1 surrounded and retained vertically by a retaining body 2 extended forward by a part 3 in the form of plate by which the body 2 can be fixed on a ski by means of two screws passing through holes 4 and 5. Once mounted, the attachment covers the part 3.
  • FIGS 2 and 3 illustrate an example of setting work of the first method.
  • Figure 2 shows the support plate fixed on a ski 6 with a binding body 7 comprising a member retainer 8 retaining, in a known manner, a shoe 9 by its sole 10 extending beyond the front end of the shoe upper.
  • the central part of the plate support is occupied by a base 11 in the form of a trunk of four-sided pyramid.
  • a sleeve 12 of elastic material sleeve whose height is greater than the height of the base 11.
  • the base 11 ensures positioning transverse of the sleeve 12, while its faces inclined allow the deformation of the sleeve in direction of the axis thereof.
  • the rigid element 1 is retained in the retaining body 2, on one side, by a heel 13 and, on the other side, by a lug 14 coming to be fixed with notch under a bearing 15 of the retaining body 2.
  • the sleeve 12 is made of elastic material, such as SBS, SEBS, PDM, EPM, TPU or natural rubber or synthetic. This material could be fluent.
  • the establishment of the rigid element 1 requires a some compression of sleeve 12.
  • the sleeve 12 is therefore slightly pre-compressed, so that the plate already offers some resistance to compression.
  • the thickness of the sole 10 of the illustrated children's shoe is and the pre-compression of the sleeve 12 provides a sufficient strength to oppose the descent of the rigid part 1. If the sole 10 has a slightly greater thickness, this variation thick will be absorbed by the sleeve 12, the compression of the sleeve resulting only in a slight increase in the pinch force of the sole, increase without consequence on the faculty trigger release.
  • the support plate that is to say the sleeve 12 is subjected to relatively high pressure.
  • the sleeve 12 deforms transversely as well towards inside and out, the sides of the base 11 quickly opposing the deformation towards the interior, so that the resistance of the sleeve 12 at deformation increases rapidly.
  • the rigid element 1 abuts against the base 11, this maximum lowering of the support plate corresponding to a thickness of sole 10 'maximum.
  • Figure 4 shows the shape of the variation in force F exerted on the support plate, force given in daN, depending on the crushing of the support plate.
  • the curve shown presents a first part of slight slope extending approximately up to two millimeters crushing. This area of the curve corresponds to a children's shoe sole. Crushing two millimeters is already obtained for a force of about 5 daN. From two millimeters of crushing, the slope of the curve increases rapidly. This zone corresponds to being crushed by an adult shoe. It extends over a range from approximately 5 to 20 daN. The maximum crushing considered is 3.5 millimeters corresponding to the position shown in Figure 3.
  • the sleeve section could have another shape as the rectangular shape shown. A few examples are shown in Figure 5.
  • the non-linearity of the relation pressure-deformation is obtained by means of limitation of the deformation of an elastic body, these means consisting of at least one rigid face opposing the free deformation of the elastic body homogeneous, in at least one direction from a certain deformation, i.e. of a certain degree deformation.
  • the elastic body 16 in the form of a stud, is made of two superimposed materials 16a and 16b of different hardnesses.
  • the upper layer 16a has a substantially hardness lower than layer 16b.
  • the elastic body 16 is mounted in a recess of a base 17 fixed to the ski 6 and it is precompressed by a rigid element 18 mounted and retained in the base 17 as element 1 of the first mode of execution.
  • the bottom of the base 17, in which rests the elastic element 16, forms a bowl 19 aux oblique walls.
  • the dimension of this bowl 19 is such as during the deformation of the layer relatively hard 16b, the bowl opposes transverse expansion of the elastic body.
  • the shoe 9 is again a children's shoe, while in Figure 7, the shoe 9 'is an adult shoe.
  • the thickness of the sole 10, in FIG. 6, is a thickness minimal.
  • the precompressed elastic body 16 is not practically not deformed by the shoe. Yes the thickness of the sole 10 is a little greater than shown, the upper layer 16a of the body elastic 16 deforms so as to absorb this difference in thickness.
  • the sole 10 'shown in Figure 7 has a maximum thickness.
  • the support element 18 is at its lowest level, resting on the base 17 and the elastic body 16 is strongly deformed.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

The support plate for the secure fixing of the front end of a ski boot is fitted with a boot restraining part (8) by a part of the sole (10). The support plate is compressible so as to adapt to variations of thickness of the sole clamped between the plate and the restraining part. A resilient body (12) is pre-compressed between a rigid movable part (1) which supports the sole and a rigid base (11) connected to the ski for limiting the deformation of the resilient body. This base has a rigid surface opposing the free deformation of the resilient body so as to constituted a non linear system, the resistance of which to pressure is relatively low in a first stage of deformation and higher in a second deformation stage.

Description

La présente invention concerne une plaque d'appui pour fixation de sécurité de l'extrémité avant d'une chaussure de ski sur un ski, fixation équipée d'un organe de retenue de la chaussure par une partie de la semelle débordant de l'extrémité avant de la chaussure pincée entre l'organe de retenue et la plaque d'appui intercalée entre le ski et la chaussure, ladite plaque d'appui étant compressible de manière à s'adapter aux variations de l'épaisseur de la partie de la semelle pincée entre la plaque d'appui et l'organe de retenue.The present invention relates to a support plate for safety attachment of the front end of a ski boot on a ski, binding equipped with a shoe retainer by part of the sole protruding from the front end of the shoe pinched between the retainer and the support plate sandwiched between the ski and the boot, said plate support being compressible so as to adapt to variations in the thickness of the sole portion pinched between the support plate and the retaining member.

En raison des tolérances de fabrication, l'épaisseur de la semelle peut varier de plus ou moins un millimètre environ. Si la distance entre la plaque d'appui et l'organe de retenue de la fixation est fixe, la force avec laquelle la semelle est pincée varie avec l'épaisseur de cette semelle. Une force de pincement excessive a pour effet d'augmenter les valeurs de déclenchement de la fixation de sécurité et altère donc la sécurité du skieur. Ceci est également le cas lorsqu'une fixation, qui a été réglée initialement pour une semelle d'enfant, est utilisée par un adulte.Due to manufacturing tolerances, the thickness of the sole can vary by more or less a millimeter about. If the distance between the backing plate and the fixing retainer is fixed, the force with which the sole is pinched varies with the thickness of this sole. Pinch force excessive has the effect of increasing the values of triggering of the safety binding and therefore alters the safety of the skier. This is also the case when a binding, which was originally set for a child's sole, is used by an adult.

Du brevet FR 2 665 868 on connaít une plaque d'appui constituée d'une plaque de support venue d'une pièce avec une plaque de base et reliée à cette plaque de base par une partie coudée formant charnière élastique. Suite aux flexions répétées, une telle charnière présente des risques de casse dus à la fatigue du matériau. En outre, une telle plaque d'appui présente une résistance pratiquement constante sur toute sa course de flexion. Or, il serait judicieux que la force de pincement de la semelle par la fixation soit plus élevée pour un adulte que pour un enfant. En effet, un enfant est sensiblement plus léger qu'un adulte, de telle sorte que l'adaptation du niveau de la plaque d'appui aux variations de l'épaisseur de la semelle dues aux tolérances de fabrication devrait se faire plus facilement que pour un adulte. Il serait donc souhaitable que la résistance de la plaque d'appui à la pression augmente avec la pression. Une absorption des tolérances d'épaisseur de semelles par un moyen élastique est également prévu dans le document DE-A-32 30186.From patent FR 2 665 868 we know a support plate consisting of a support plate from one piece with a base plate and connected to this plate base by a bent part forming an elastic hinge. Following repeated bending, such a hinge presents risks of breakage due to fatigue material. In addition, such a support plate has practically constant resistance throughout its bending stroke. However, it would be wise for the force pinching of the sole by fixing is more higher for an adult than for a child. Indeed, a child is significantly lighter than an adult, so that the plate level adaptation to support variations in the thickness of the sole due to manufacturing tolerances should be done more easily than for an adult. So it would be desirable that the resistance of the backing plate to the pressure increases with pressure. An absorption of sole thickness tolerances by one means elastic is also provided in document DE-A-32 30186.

Dans le document WO 91/08808, il est proposé d'intercaler une couche de matériau amortissant entre une plaque d'appui et le ski, ce matériau amortissant pouvant présenter une raideur progressive en fonction de sa compression, à cause de sa forme ou de la matière qui le compose. Le seul but de ce matériau est d'amortir les chocs et les vibrations, mais une telle plaque d'appui aura également tendance à s'adapter, dans certains cas, à une variation d'épaisseur de la semelle.In document WO 91/08808, it is proposed to insert a layer of damping material between a backing plate and the ski, this cushioning material may exhibit progressive stiffness depending of its compression, because of its shape or the material who composes it. The sole purpose of this material is to absorb shock and vibration, but such support plate will also tend to adapt, in some cases, to a variation in thickness of the sole.

L'invention a pour but de réaliser une plaque d'appui s'adaptant systématiquement aux variations d'épaisseur de la semelle, en particulier aussi bien aux semelles de chaussure d'enfant qu'aux semelles de chaussure d'adulte, en offrant une plus grande résistance au poids d'un adulte qu'à celui d'un enfant et capable également de supporter sans fatigue des déformations répétées.The object of the invention is to produce a support plate systematically adapting to variations in thickness from the sole, especially as well to the soles children's shoes than shoe soles adult, offering greater resistance to weight of an adult than that of a child and capable also to bear deformations without fatigue repeated.

La plaque d'appui selon l'invention est caractérisée en ce qu'elle comprend un corps élastique précomprimé entre un élément rigide mobile destiné à supporter la semelle et un socle lié au ski et des moyens de limitation de la déformation du corps élastique, ces moyens étant constitués d'au moins une face rigide s'opposant à la libre déformation du corps élastique, dans au moins une direction, à partir d'une certaine déformation de ce corps élastique, de manière à constituer un système non linéaire dont la résistance à la pression est relativement faible dans une première plage de déformation et sensiblement plus élevée dans une seconde plage de déformation.The support plate according to the invention is characterized in what it includes a precompressed elastic body between a mobile rigid element intended to support the sole and base linked to skiing and means of limitation of the deformation of the elastic body, these means consisting of at least one rigid face opposing the free deformation of the elastic body, in at least one direction, from a certain deformation of this elastic body, so that constitute a nonlinear system whose resistance to the pressure is relatively low in a first deformation range and significantly higher in a second deformation range.

Selon un mode d'exécution, le corps élastique est en forme de manchon entourant un socle rigide, ce socle présentant, au moins approximativement, une forme de tronc de pyramide ou de cône s'opposant à la déformation du manchon à partir d'un certain degré de déformation.According to one embodiment, the elastic body is in sleeve shape surrounding a rigid base, this base having, at least approximately, a form of trunk of pyramid or cone opposing the deformation of the sleeve from a certain degree of deformation.

L'élément rigide reposant sur le corps élastique est avantageusement entouré et retenu verticalement par un corps de retenue fixé au ski. The rigid element resting on the elastic body is advantageously surrounded and held vertically by a retaining body fixed to the ski.

La plaque d'appui selon l'invention permet d'obtenir une résistance à la pression relativement faible dans une première plage de déformation, par exemple de deux millimètres, et une résistance à la pression sensiblement plus élevée pour une déformation supérieure à deux millimètres, par exemple entre 2 millimètres et 3,5 millimètres, valeurs correspondant à l'épaisseur maximale d'une semelle de chaussure pour adulte. Le niveau de la plaque d'appui et avec elle la force de pincement de la semelle s'adapteront donc plus facilement aux variations d'épaisseur d'une semelle de chaussure pour enfants.The support plate according to the invention makes it possible to obtain relatively low pressure resistance in a first deformation range, for example two millimeters, and resistance to pressure significantly higher for deformation greater than two millimeters, for example between 2 millimeters and 3.5 millimeters, values corresponding to the maximum thickness of a shoe sole for adult. The level of the support plate and with it the sole gripping force will therefore adapt more easily to variations in thickness of a sole of children's shoe.

Le dessin annexé représente, à titre d'exemple, deux modes d'exécution de la plaque d'appuis selon l'invention.The accompanying drawing shows, by way of example, two modes of execution of the support plate according to the invention.

La figure 1 est une vue en perspective, sans la fixation, du premier mode d'exécution.Figure 1 is a perspective view, without the fixation, of the first embodiment.

La figure 2 en représente une vue en coupe verticale longitudinale, selon le plan de symétrie, avec la fixation représentée et l'avant d'une chaussure d'enfant engagée dans la fixation, représentés en traits fins.Figure 2 shows a vertical sectional view longitudinal, along the plane of symmetry, with the binding shown and the front of a shoe child engaged in the fixation, represented in fine lines.

La figure 3 est une vue analogue à la figure 2 avec une chaussure pour adulte engagée dans la fixation.Figure 3 is a view similar to Figure 2 with a adult shoe engaged in binding.

La figure 4 représente la courbe idéale de déformation de la plaque d'appui en fonction de la force exercée sur cette plaque d'appui. Figure 4 shows the ideal deformation curve of the backing plate as a function of the force exerted on this backing plate.

La figure 5 représente quelques variantes de section du corps élastique.Figure 5 shows some section variants of the elastic body.

La figure 6 est une vue en coupe longitudinale d'un second mode d'exécution avec semelle d'enfant.Figure 6 is a longitudinal sectional view of a second embodiment with children's sole.

La figure 7 est une vue analogue à la figure 5 avec semelle d'adulte.Figure 7 is a view similar to Figure 5 with adult sole.

A la figure 1, on distingue un élément rigide 1 entouré et retenu verticalement par un corps de retenue 2 prolongé vers l'avant par une partie 3 en forme de plaque par laquelle le corps 2 peut être fixé sur un ski au moyen de deux vis traversant des trous 4 et 5. Une fois montée, la fixation vient recouvrir la partie 3.In Figure 1, there is a rigid element 1 surrounded and retained vertically by a retaining body 2 extended forward by a part 3 in the form of plate by which the body 2 can be fixed on a ski by means of two screws passing through holes 4 and 5. Once mounted, the attachment covers the part 3.

Les figures 2 et 3 illustrent un exemple de mise en oeuvre de la première méthode.Figures 2 and 3 illustrate an example of setting work of the first method.

La figure 2 représente la plaque d'appui fixée sur un ski 6 avec un corps de fixation 7 comportant un organe de retenue 8 retenant, de manière connue, une chaussure 9 par sa semelle 10 débordant l'extrémité avant de la tige de la chaussure. La partie centrale de la plaque d'appui est occupée par un socle 11 en forme de tronc de pyramide à quatre faces. Autour de ce socle, est disposé un manchon 12 en matériau élastique, manchon dont la hauteur est supérieure à la hauteur du socle 11. Par sa base, le socle 11 assure le positionnement transversal du manchon 12, tandis que ses faces inclinées autorisent la déformation du manchon en direction de l'axe de celui-ci.Figure 2 shows the support plate fixed on a ski 6 with a binding body 7 comprising a member retainer 8 retaining, in a known manner, a shoe 9 by its sole 10 extending beyond the front end of the shoe upper. The central part of the plate support is occupied by a base 11 in the form of a trunk of four-sided pyramid. Around this base, is disposed a sleeve 12 of elastic material, sleeve whose height is greater than the height of the base 11. By its base, the base 11 ensures positioning transverse of the sleeve 12, while its faces inclined allow the deformation of the sleeve in direction of the axis thereof.

L'élément rigide 1 est retenu dans le corps de retenue 2, d'un côté, par un talon 13 et, de l'autre côté, par un ergot 14 venant se fixer à cran sous une portée 15 du corps de retenue 2.The rigid element 1 is retained in the retaining body 2, on one side, by a heel 13 and, on the other side, by a lug 14 coming to be fixed with notch under a bearing 15 of the retaining body 2.

Le manchon 12 est en matériau élastique, tel que SBS, SEBS, PDM, EPM, TPU ou caoutchouc naturel ou synthétique. Ce matériau pourrait être fluant.The sleeve 12 is made of elastic material, such as SBS, SEBS, PDM, EPM, TPU or natural rubber or synthetic. This material could be fluent.

La mise en place de l'élément rigide 1 nécessite une certaine compression du manchon 12. Dans la position représentée à la figure 2, le manchon 12 est donc légèrement pré-comprimé, de telle sorte que la plaque d'appui offre déjà une certaine résistance à la compression. Dans cette même figure, l'épaisseur de la semelle 10 de la chaussure d'enfant représentée est minimale et la pré-compression du manchon 12 offre une résistance suffisante pour s'opposer à la descente de la pièce rigide 1. Si la semelle 10 présente une épaisseur légèrement supérieure, cette variation d'épaisseur sera absorbée par le manchon 12, la compression du manchon se traduisant seulement par une légère augmentation de la force de pincement de la semelle, augmentation sans conséquence sur la faculté de déclenchement de la fixation.The establishment of the rigid element 1 requires a some compression of sleeve 12. In the position shown in Figure 2, the sleeve 12 is therefore slightly pre-compressed, so that the plate already offers some resistance to compression. In this same figure, the thickness of the sole 10 of the illustrated children's shoe is and the pre-compression of the sleeve 12 provides a sufficient strength to oppose the descent of the rigid part 1. If the sole 10 has a slightly greater thickness, this variation thick will be absorbed by the sleeve 12, the compression of the sleeve resulting only in a slight increase in the pinch force of the sole, increase without consequence on the faculty trigger release.

Il convient de rappeler ici que la semelle de la chaussure est introduite obliquement sous l'organe de retenue 8 de la fixation qui constitue le point d'appui d'un levier constitué par la chaussure qui vient comprimer la plaque d'appui, d'une part, sous l'effet du poids du skieur et, d'autre part, sous l'effet de l'élément de fixation arrière maintenant le talon de la chaussure contre le ski.It should be recalled here that the sole of the shoe is introduced obliquely under the body of retainer 8 of the fixing which constitutes the fulcrum of a lever constituted by the shoe which comes compress the support plate, on the one hand, under the effect weight of the skier and, on the other hand, under the effect of the rear fastener holding the heel of the shoe against skiing.

Lorsque la chaussure d'enfant 9 est remplacée par une chaussure d'adulte 9' munie d'une semelle 10' d'épaisseur supérieure à la semelle 10 de la chaussure d'enfant, la plaque d'appui, c'est-à-dire le manchon 12 est soumise à une pression relativement élevée. Le manchon 12 se déforme transversalement aussi bien vers l'intérieur que vers l'extérieur, les flancs du socle 11 s'opposant rapidement à la déformation vers l'intérieur, de telle sorte que la résistance du manchon 12 à la déformation augmente rapidement. Lorsque la pression est suffisante, l'élément rigide 1 vient buter contre le socle 11, cet abaissement maximum de la plaque d'appui correspondant à une épaisseur de semelle 10' maximale.When children's shoe 9 is replaced by a 9 'adult shoe with 10' sole thicker than the sole 10 of the shoe child's, the support plate, that is to say the sleeve 12 is subjected to relatively high pressure. The sleeve 12 deforms transversely as well towards inside and out, the sides of the base 11 quickly opposing the deformation towards the interior, so that the resistance of the sleeve 12 at deformation increases rapidly. When the pressure is sufficient, the rigid element 1 abuts against the base 11, this maximum lowering of the support plate corresponding to a thickness of sole 10 'maximum.

La figure 4 représente l'allure de la variation de la force F exercée sur la plaque d'appui, force donnée en daN, en fonction de l'écrasement de la plaque d'appui. En partant de l'origine, la courbe représentée présente une première partie de faible pente s'étendant approximativement jusqu'à deux millimètres d'écrasement. Cette zone de la courbe correspond à une semelle de chaussure enfant. L'écrasement de deux millimètres est déjà obtenu pour une force d'environ 5 daN. A partir de deux millimètres d'écrasement, la pente de la courbe augmente rapidement. Cette zone correspond à l'écrasement par une chaussure d'adulte. Elle s'étend sur une plage allant d'environ 5 à 20 daN. L'écrasement maximal considéré est de 3,5 millimètres correspondant à la position représentée à la figure 3.Figure 4 shows the shape of the variation in force F exerted on the support plate, force given in daN, depending on the crushing of the support plate. Starting from the origin, the curve shown presents a first part of slight slope extending approximately up to two millimeters crushing. This area of the curve corresponds to a children's shoe sole. Crushing two millimeters is already obtained for a force of about 5 daN. From two millimeters of crushing, the slope of the curve increases rapidly. This zone corresponds to being crushed by an adult shoe. It extends over a range from approximately 5 to 20 daN. The maximum crushing considered is 3.5 millimeters corresponding to the position shown in Figure 3.

La section du manchon pourrait présenter une autre forme que la forme rectangulaire représentée. Quelques exemples sont représentés à la figure 5.The sleeve section could have another shape as the rectangular shape shown. A few examples are shown in Figure 5.

D'une manière générale, la non-linéarité de la relation pression-déformation est obtenue par des moyens de limitation de la déformation d'un corps élastique, ces moyens étant constitués d'au moins une face rigide s'opposant à la libre déformation du corps élastique homogène, dans au moins une direction à partir d'une certaine déformation, c'est-à-dire d'un certain degré de déformation.In general, the non-linearity of the relation pressure-deformation is obtained by means of limitation of the deformation of an elastic body, these means consisting of at least one rigid face opposing the free deformation of the elastic body homogeneous, in at least one direction from a certain deformation, i.e. of a certain degree deformation.

Selon le second mode d'exécution représenté aux figures 6 et 7, le corps élastique 16, en forme de plot, est constitué de deux matériaux superposés 16a et 16b de duretés différentes. Dans l'exemple considéré, la couche supérieure 16a présente une dureté sensiblement inférieure à la couche 16b. Le corps élastique 16 est monté dans une creusure d'un socle 17 fixé au ski 6 et il est précomprimé par un élément rigide 18 monté et retenu dans le socle 17 comme l'élément 1 du premier mode d'exécution. Le fond du socle 17, dans lequel repose l'élément élastique 16, forme une cuvette 19 aux parois obliques. La dimension de cette cuvette 19 est telle que lors de la déformation de la couche relativement dure 16b, la cuvette s'oppose à l'expansion transversale du corps élastique.According to the second embodiment shown in the figures 6 and 7, the elastic body 16, in the form of a stud, is made of two superimposed materials 16a and 16b of different hardnesses. In the example considered, the upper layer 16a has a substantially hardness lower than layer 16b. The elastic body 16 is mounted in a recess of a base 17 fixed to the ski 6 and it is precompressed by a rigid element 18 mounted and retained in the base 17 as element 1 of the first mode of execution. The bottom of the base 17, in which rests the elastic element 16, forms a bowl 19 aux oblique walls. The dimension of this bowl 19 is such as during the deformation of the layer relatively hard 16b, the bowl opposes transverse expansion of the elastic body.

A la figure 6, la chaussure 9 est à nouveau une chaussure d'enfant, tandis qu'à la figure 7, la chaussure 9' est une chaussure d'adulte. L'épaisseur de la semelle 10, à la figure 6, est une épaisseur minimale. Le corps élastique 16 précomprimé n'est pratiquement pas déformé par le chaussage. Si l'épaisseur de la semelle 10 est un peu plus grande que représentée, la couche supérieure 16a du corps élastique 16 se déforme de manière à absorber cette différence d'épaisseur.In FIG. 6, the shoe 9 is again a children's shoe, while in Figure 7, the shoe 9 'is an adult shoe. The thickness of the sole 10, in FIG. 6, is a thickness minimal. The precompressed elastic body 16 is not practically not deformed by the shoe. Yes the thickness of the sole 10 is a little greater than shown, the upper layer 16a of the body elastic 16 deforms so as to absorb this difference in thickness.

La semelle 10' représentée à la figure 7 présente une épaisseur maximale. L'élément d'appui 18 est à son niveau le plus bas, en appui sur le socle 17 et le corps élastique 16 est fortement déformé.The sole 10 'shown in Figure 7 has a maximum thickness. The support element 18 is at its lowest level, resting on the base 17 and the elastic body 16 is strongly deformed.

Claims (5)

  1. Bearing plate for a safety binding securing the front end of a ski boot to a ski, this binding being equipped with a member (8) for retaining the boot via a part of the sole (10) which protrudes from the front end of the boot and is clamped between the retaining member and the bearing plate interposed between the ski and the boot, said bearing plate being compressible so as to adapt to the variations in thickness of the part of the sole clamped between the bearing plate and the retaining member, characterized in that the bearing plate comprises an elastic body (12; 16) which is precompressed between a rigid mobile element (1; 18) intended to support the sole and a rigid base (11; 17) connected to the ski, and means (11; 19) for limiting the deformation of the elastic body, these means consisting of at least one rigid face which opposes the free deformation of the elastic body, in at least one direction, beyond a certain deformation of this elastic body, so as to form a nonlinear system whose resistance to pressure is relatively small in a first range of deformation and is substantially higher in a second range of deformation.
  2. Bearing plate as claimed in claim 1, characterized in that the elastic body is in the form of a sleeve (12) surrounding a part (11) of the base.
  3. Bearing plate as claimed in claim 2, characterized in that the base part (11) surrounded by the elastic body is at least approximately in the form of a truncated pyramid or cone.
  4. Bearing plate as claimed in claim 1, characterized in that the rigid element (1; 18) resting on the elastic body is surrounded and retained vertically by a retaining body (2; 17) fixed to the ski.
  5. Bearing plate as claimed in claim 1, characterized in that the elastic body (12; 16) has a resistance to crushing which increases substantially beyond crushing by about 2 millimeters.
EP98810366A 1997-05-13 1998-04-27 Pressure plate for safety binding Expired - Lifetime EP0878217B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9706202A FR2763252B1 (en) 1997-05-13 1997-05-13 SUPPORT PLATE FOR SECURITY FIXING
FR9706202 1997-05-13

Publications (2)

Publication Number Publication Date
EP0878217A1 EP0878217A1 (en) 1998-11-18
EP0878217B1 true EP0878217B1 (en) 2003-02-26

Family

ID=9507078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810366A Expired - Lifetime EP0878217B1 (en) 1997-05-13 1998-04-27 Pressure plate for safety binding

Country Status (5)

Country Link
US (1) US6045149A (en)
EP (1) EP0878217B1 (en)
AT (1) ATE233119T1 (en)
DE (1) DE69811559T2 (en)
FR (1) FR2763252B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769236B1 (en) * 1997-10-03 2000-02-04 Salomon Sa SHOCK ABSORBER FOR A DEVICE FOR RETAINING A SHOE ON A SNOWBOARD FOR SNOW SURFING AND A DEVICE PROVIDED WITH SUCH A SHOE
FR2774303B1 (en) * 1998-01-30 2000-04-28 Salomon Sa DEVICE FOR RETAINING A SHOE ON A SNOWBOARD

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230186C2 (en) * 1982-08-13 1994-08-25 Salomon Sa Side-releasable front jaws of a ski binding
FR2602979B1 (en) * 1986-08-20 1990-09-21 Salomon Sa SHOCK ABSORBER AND VIBRATION DEVICE BETWEEN A SKI AND THE ATTACHMENT OF THE SHOE
DE59005580D1 (en) * 1989-04-21 1994-06-09 Tyrolia Freizeitgeraete Sole support device.
EP0506806A1 (en) * 1989-12-18 1992-10-07 Salomon S.A. Safety binding for skis
FR2655868B1 (en) * 1989-12-18 1992-11-27 Salomon Sa ALPINE SKI SAFETY ATTACHMENT.
FR2665868B1 (en) 1990-08-16 1995-06-30 Menguy Didier EQUIPMENT FOR THE ELECTRICAL SUPPLY OF BODIES ON BOARD A VEHICLE.
FR2694206B1 (en) * 1992-07-31 1994-09-02 Salomon Sa Safety binding for ski.
FR2707513B1 (en) * 1993-07-13 1995-09-29 Salomon Sa Alpine ski binding element.
FR2713946B1 (en) * 1993-12-17 1996-02-16 Salomon Sa Support plate for a boot, in particular a ski boot.
DE19517417A1 (en) * 1995-05-17 1996-11-21 Marker Deutschland Gmbh Ski binding

Also Published As

Publication number Publication date
EP0878217A1 (en) 1998-11-18
ATE233119T1 (en) 2003-03-15
FR2763252A1 (en) 1998-11-20
FR2763252B1 (en) 1999-07-23
DE69811559D1 (en) 2003-04-03
DE69811559T2 (en) 2003-11-20
US6045149A (en) 2000-04-04

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