EP0807453B1 - Sole hold-down element for boots on skis - Google Patents

Sole hold-down element for boots on skis Download PDF

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Publication number
EP0807453B1
EP0807453B1 EP97106532A EP97106532A EP0807453B1 EP 0807453 B1 EP0807453 B1 EP 0807453B1 EP 97106532 A EP97106532 A EP 97106532A EP 97106532 A EP97106532 A EP 97106532A EP 0807453 B1 EP0807453 B1 EP 0807453B1
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EP
European Patent Office
Prior art keywords
wing
shoulder
transmission member
return
flap
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
EP97106532A
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German (de)
French (fr)
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EP0807453A1 (en
Inventor
Christian Challande
Jean-François Merino
Daniel Soldan
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Salomon SAS
Original Assignee
Salomon SAS
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Filing date
Publication date
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Publication of EP0807453A1 publication Critical patent/EP0807453A1/en
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Publication of EP0807453B1 publication Critical patent/EP0807453B1/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
    • 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
    • A63C9/08507—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • A63C9/08521—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws pivoting about a vertical axis, e.g. side release
    • 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
    • A63C9/08557—Details of the release mechanism
    • A63C9/08564—Details of the release mechanism using cam or slide surface

Definitions

  • the invention relates to a shoe retention element on a ski.
  • the invention relates to a front retaining element which is designed to releasably retain the front of a shoe.
  • the element has a jaw which is movable against the force of reminder opposed to it by an elastic return means, for example a spring.
  • the invention relates to those whose trigger is asymmetrical, i.e. they release the shoe more easily on one side than on the other.
  • a skier's leg is able to endure higher twists for forefoot rotation outward only for rotation to the other foot. So it appeared interesting to make retaining elements that take into account this dissymmetry.
  • Patent applications published under the numbers FR 1 503 849, FR 1 503 847 describe such elements which release the shoe asymmetrically.
  • An object of the invention is to improve this type of retaining element by making its asymmetrical functioning by simple modifications of its construction.
  • the retaining element according to the invention as described in claim 1 comprises a base provided for be secured to the ski, a body connected to the base, the body having two axes hinge for two retaining wings, the retaining wings having a return wing beyond the hinge axis, a return spring housed in the body, a connecting member between the spring and the wing returns. It also includes a asymmetrical member in the connection chain between the spring and the wings.
  • Figure 1 shows a side of a traditional retaining element of the type concerned with the invention.
  • Figure 2 is a sectional side view of the retainer of Figure 1.
  • Figure 3 shows two half views of the retainer of Figure 1 cut by section planes located at different altitudes.
  • Figure 4 illustrates in top view and in section a retaining element according a first embodiment of the invention.
  • Figure 5 relates to another embodiment of the invention.
  • Figure 6 illustrates the operating mode of the element shown in figure 5.
  • Figure 7 relates to another embodiment of the invention.
  • FIG. 8 represents in perspective the intermediate flap of FIG. 6.
  • FIG. 9 illustrates the operating mode of the element in FIG. 7.
  • the front fixing element 1 represented in FIGS. 1 to 3 is known for the essentials according to the French patent application published under the number FR 2 640 516.
  • the base has a "U" shape open towards the rear, with two lateral branches 3a and 3b.
  • the body is movable vertically relative to the base by a link deformable, located in zone 9 at the junction between the body and the base.
  • the body and the base are connected continuously by this deformable zone and form a monobloc element.
  • the body 2 carries a jaw 4 retaining the front end of the shoe.
  • the jaw 4 comprises two lateral retaining wings 5 and 6, respectively articulated to the body 2 around axes 7 and 8.
  • the jaw 4 comprises also a sole clamp 12 for vertical retention of the shoe.
  • the wings 5 and 6 are movable in response to the stresses of the shoe, against the return force applied to them by a spring 15.
  • the spring 15 is housed in the body. It acts on a piston 16 also housed and guided in the body for a longitudinal translational movement.
  • the figures show that the piston is housed and guided in a housing 17 of the body, and that the spring is engaged inside the piston. Its front end is pressed against the bottom of the piston, located on the front side of the fixing element.
  • a screw 20 whose head is retained at the front of the body, moreover passes through the piston and the spring, and has a nut 21 at the rear which retains the rear end of the spring.
  • a rotation of the screw drives the spring in translation, which adjusts the initial compression of the spring.
  • the wings 5 and 6 have beyond their axis of articulation to the body 7 and 8 a return 5a, 6a, which drives the piston 16 rearward, bearing against a shoulder 23 located in the upper rear part of the piston 16.
  • element 1 has a mechanism for compensation which alleviates the restoring force that the spring 15 exerts on the wings 5 and 6.
  • This mechanism comprises an articulated rocker 30 which is partly housed between the branches 3a and 3b of the base 3.
  • the rocker is articulated around an axis 32 carried by these branches.
  • the rocker 30 has an approximately horizontal arm 33 which is accessible on the rear of the fixing element between the branches 3a and 3b of the base.
  • the rocker 30 also has an approximately vertical arm formed by two lateral pads which pass on each side of the piston 16, and which each bear on a shoulder 37 which the piston has under the shoulder 23 wings. Only the shoe 35 is partially visible in the figures.
  • a connecting rod 36 also connects the rocker 30 to the rear part of the body 2.
  • the articulation of the rod 36 to the rocker 30 is located in front of the axis 32.
  • the rod transmits to the rocker 30, and therefore to the piston 16, the elevation movements of the body which occur in particular during a vertical stress on the shoe in the jaw.
  • the element has a support plate 40 provided behind the jaw to receive the front of the shoe sole.
  • the front part of the pedal is vertically movable, and overhangs the horizontal arm 33 of the rocker 30.
  • a spring 51 ensures the elastic return to the top of the front of the pedal.
  • FIG. 4 illustrates a first embodiment of the invention. according to this mode of implementation, one of the two wings has a shorter return than the other so that the wings stress the piston with different lever arms.
  • FIG 4 there is shown a retaining element with, the return 45a of wing 45 shorter than the return of the other wing 46.
  • Wing 45 attacks the piston with a shorter lever arm, where it follows that this wing 45 will be easier to open than the other wing 46.
  • the axis offset could also have two components, inward and forward, to both increase the lever arm with which the shoe stresses the wing, and decrease the lever arm with which the wing attacks the piston.
  • FIG. 5 illustrates another variant implementation of the invention.
  • the wing which has the lowest resistance to opening, in the occurrence of wing 48 has a return of wing 48a whose bearing face against the piston shoulder is cut like a beveled ramp which has a support face oblique to a longitudinal direction.
  • Piston 49 has a support shoulder 50 which is designed to cooperate with the face support of the ramp so that the contact surface between the wing return and the shoulder moves along the beveled ramp during the rotation of the wing.
  • the shape of the support shoulder takes into account the shape of the ramp the wing, and also takes into account that the wing return moves in a circular movement, but that it animates the shoulder of a movement directed according to a longitudinal direction.
  • the shoulder has a leading edge for the relatively fine wing return and round shape.
  • the wing return slides on the shoulder of the piston, and, therefore, in a longitudinal direction, the wing return has a linear movement of greater amplitude than the linear movement of the piston that the return drives.
  • the release of the shoe from the side of the wing 48 is obtained for compression of the spring weaker than on the side of the other wing. We can indeed consider that this release occurs for a wing opening of determined angle.
  • Figure 6 shows the wing 48 in the open position, with its return 48a which has slid along the shoulder due to its rotation around the axis of the wing.
  • any other suitable shape is suitable for the surfaces of wing beak and shoulder contact, provided that in one direction longitudinal, we get a relative movement of the return relative to the piston.
  • the other wing 52 of the retaining element has a traditional support with a wing return 52a bearing against a transverse shoulder 53 of the piston.
  • FIG. 7 shows another embodiment of the invention.
  • the piston 60 has in its upper part a transverse support shoulder 61, which provides support for the two returns 62a and 63a of the wings 62 and 63. Between the transverse shoulder and the wing returns is interposed a movable flap 65.
  • the flap is more particularly visible in FIG. 8.
  • On the wing return side it has a bearing face with two bearing zones 66 and 67, substantially in line with one another, one for each return wing.
  • the flap carries two support zones 68 and 69, which form between they have a dihedral angle greater than a flat angle, so that a portion of the flap is beveled.
  • the faces 67 and 69 are substantially parallel to each other. Between zones 68, 69, the flap carries an edge 70 or all other suitable means of bearing against the transverse shoulder 53 of the piston, and articulation around a vertical direction. The edge is shifted to the side where the flap is beveled without however exceeding the level of the wing return support 62a against zone 66.
  • the shoulder has a groove or any other appropriate means to receive the edge 70 of the shutter. Any other means of support and articulation between these two elements also suitable.
  • the wings 62 and 63 each have a support stop which defines their rest position.
  • This stop is formed for example by the supports of the face internal 72, 73 of the wings against stops integral with the body. These stops are not not shown in the figures. In known manner, these stops can be formed by vertical partitions which connect the upper part and the part lower body.
  • the spring In the rest position, the spring returns the wings to their rest position.
  • the flap 65 is held with its face 69 in abutment against the transverse shoulder 61.
  • the return wing 63a carries with it the flap, the two parallel faces 67 and 69 of which find pinched between the wing return and the transverse shoulder. Movement wing return in a longitudinal direction is transmitted directly to the piston.
  • the displacement of the piston and the resistance force that the piston opposes the wing opening are reduced by the ratio of the lever arms between the different shutter support.
  • the wing 63 which is located on the side of the bevel of the flap opens more easily than the other wing.
  • the position of the edge relative to the support zones of the two wing returns determines the ratio of the lever arms and therefore the ratio of decrease in strength.
  • the bevel angle of the flap determines with the position of edge 70 the opening stroke of wing 62 beyond which face 68 of flap 65 bears against the shoulder. At this stage of tilting of the flap, the movement of the flap becomes equal to that of the piston.
  • the face 68 of the flap could be entirely or partially curved, so as to have a variable speed decrease between the speed linear of the wing return, and that of the piston.
  • the face 66 could also be curved or have a ramp shape for compensate for the tilting of the flap 65 and the relative movement between the wing return 62a and the flap 65 during the opening of the wing.
  • the piston could be replaced by a tie rod or any other appropriate force transmission organ guided with respect to the body.
  • each of the elements present an asymmetry of the same nature, which is exerted in reverse, that is to say, for example, which reduces the retaining force of the outer wings.

Abstract

The boot retaining clamp consists of a base which is fixed to the ski and carries a housing with two jaws (48,52) pivoting about vertical axes. Each jaws has an inner projection (48a,52a) which interacts with an inner spring-loaded transmission member. The clamp incorporates a mechanism to reduce the lengthwise movement of the transmission member in relation to one of the side jaw projections. It is made in the form of a chamfered surface on the inside of the projection interacting with a shoulder (50) on the transmission member. Alternatively, the transmission member has a pivoted shutter which is able to interact with the jaw projections.

Description

L'invention concerne un élément de retenue d'une chaussure sur un ski.The invention relates to a shoe retention element on a ski.

Plus exactement, l'invention concerne un élément de retenue avant qui est prévu pour retenir de façon libérable l'avant d'une chaussure. Pour ce faire, de façon connue, l'élément présente une mâchoire qui est mobile contre la force de rappel que lui oppose un moyen de rappel élastique, par exemple un ressort.More precisely, the invention relates to a front retaining element which is designed to releasably retain the front of a shoe. To do this, known manner, the element has a jaw which is movable against the force of reminder opposed to it by an elastic return means, for example a spring.

Parmi les éléments de retenue connus, l'invention concerne ceux dont le déclenchement est asymétrique, c'est-à-dire qu'ils libèrent la chaussure plus facilement d'un côté que de l'autre. On sait en effet que la jambe d'un skieur est capable d'endurer des torsions plus élevées pour une rotation de l'avant du pied vers l'extérieur que pour une rotation vers l'autre pied. Il est donc apparu intéressant de réaliser des éléments de retenue qui prennent en compte cette dissymétrie.Among the known retaining elements, the invention relates to those whose trigger is asymmetrical, i.e. they release the shoe more easily on one side than on the other. We know that a skier's leg is able to endure higher twists for forefoot rotation outward only for rotation to the other foot. So it appeared interesting to make retaining elements that take into account this dissymmetry.

Les demandes de brevet publiées sous les numéros FR 1 503 849, FR 1 503 847 décrivent de tels éléments qui libèrent la chaussure de façon asymétrique.Patent applications published under the numbers FR 1 503 849, FR 1 503 847 describe such elements which release the shoe asymmetrically.

Ces constructions présentent toutefois l'inconvénient de retenir la chaussure en tout ou rien. Ces éléments de retenue ne présentent pas de course élastique, c'est-à-dire que pour de faibles sollicitations, ils ne permettent pas à la chaussure de se décaler latéralement en assurant ensuite son recentrage sur le ski.However, these constructions have the disadvantage of retaining the shoe in all or nothing. These retaining elements do not have an elastic stroke, that is to say that for low loads, they do not allow the shoe to shift laterally then ensuring its refocusing on the ski.

Parmi les constructions actuelles qui présentent une course élastique, on connaít d'après la demande de brevet français publiée sous le numéro FR 2 640 516 un élément de retenue comprenant une embase surmontée d'un corps. Deux ailes de retenue sont montées de façon articulée par rapport au corps, et sont rappelées en position fermée par un ressort de rappel.Among the current constructions which have an elastic stroke, knows from the French patent application published under the number FR 2 640 516 a retaining element comprising a base surmounted by a body. Of them retaining wings are mounted in an articulated manner with respect to the body, and are returned to the closed position by a return spring.

Un but de l'invention est d'améliorer ce type d'élément de retenue en rendant son fonctionnement asymétrique par des modifications simples de sa construction.An object of the invention is to improve this type of retaining element by making its asymmetrical functioning by simple modifications of its construction.

L'élément de retenue selon l'invention tel que décrit dans la revendication 1, comprend une embase prévue pour être solidarisée au ski, un corps relié à l'embase, le corps ayant deux axes d'articulation pour deux ailes de retenue, les ailes de retenue présentant un retour d'aile au -delà de l'axe d'articulation, un ressort de rappel logé dans le corps, un organe de liaison entre le ressort et les retours d'aile. Il comprend par ailleurs un organe asymétrique dans la chaíne de liaison entre le ressort et les ailes.The retaining element according to the invention as described in claim 1, comprises a base provided for be secured to the ski, a body connected to the base, the body having two axes hinge for two retaining wings, the retaining wings having a return wing beyond the hinge axis, a return spring housed in the body, a connecting member between the spring and the wing returns. It also includes a asymmetrical member in the connection chain between the spring and the wings.

L'invention sera mieux comprise en se référant à la description ci-dessous et aux dessins en annexe qui en font partie intégrante.The invention will be better understood by referring to the description below and the annexed drawings which form an integral part thereof.

La figure 1 représente de côté un élément de retenue traditionnel du type concerné par l'invention.Figure 1 shows a side of a traditional retaining element of the type concerned with the invention.

La figure 2 est une vue de côté en coupe de l'élément de retenue de la figure 1. Figure 2 is a sectional side view of the retainer of Figure 1.

La figure 3 représente deux demies vues de l'élément de retenue de la figure 1 coupé par des plans de coupe situés à des altitudes différentes.Figure 3 shows two half views of the retainer of Figure 1 cut by section planes located at different altitudes.

La figure 4 illustre en vue de dessus et en coupe un élément de retenue selon un premier mode de mise en oeuvre de l'invention.Figure 4 illustrates in top view and in section a retaining element according a first embodiment of the invention.

La figure 5 est relative à un autre mode de mise en oeuvre de l'invention.Figure 5 relates to another embodiment of the invention.

La figure 6 illustre le mode de fonctionnement de l'élément représenté en figure 5.Figure 6 illustrates the operating mode of the element shown in figure 5.

La figure 7 se rapporte à un autre mode de mise en oeuvre de l'invention.Figure 7 relates to another embodiment of the invention.

La figure 8 représente en perspective le volet intermédiaire de la figure 6.FIG. 8 represents in perspective the intermediate flap of FIG. 6.

La figure 9 illustre le mode de fonctionnement de l'élément de la figure 7.FIG. 9 illustrates the operating mode of the element in FIG. 7.

L'élément de fixation avant 1 représenté dans les figures 1 à 3 est connu pour l'essentiel d'après la demande de brevet français publiée sous le numéro FR 2 640 516.The front fixing element 1 represented in FIGS. 1 to 3 is known for the essentials according to the French patent application published under the number FR 2 640 516.

Il comprend un corps 2 relié à une embase 3 qui est reliée solidairement au ski par tout moyen approprié et par exemple par des vis. Vue de dessus, l'embase présente une forme de "U" ouvert vers l'arrière, avec deux branches latérales 3a et 3b.It comprises a body 2 connected to a base 3 which is integrally connected to the ski by any suitable means and for example by screws. Top view, the base has a "U" shape open towards the rear, with two lateral branches 3a and 3b.

Le corps est mobile verticalement par rapport à l'embase par une liaison déformable, localisée dans la zone 9 à la jonction entre le corps et l'embase. Le corps et l'embase sont reliés en continu par cette zone déformable et forment un élément monobloc.The body is movable vertically relative to the base by a link deformable, located in zone 9 at the junction between the body and the base. The body and the base are connected continuously by this deformable zone and form a monobloc element.

Le corps 2 porte une mâchoire 4 de retenue de l'extrémité avant de la chaussure. La mâchoire 4 comprend deux ailes de retenue latérale 5 et 6, respectivement articulées au corps 2 autour d'axes 7 et 8. La mâchoire 4 comprend aussi un serre-semelle 12 de retenue verticale de la chaussure.The body 2 carries a jaw 4 retaining the front end of the shoe. The jaw 4 comprises two lateral retaining wings 5 and 6, respectively articulated to the body 2 around axes 7 and 8. The jaw 4 comprises also a sole clamp 12 for vertical retention of the shoe.

Les ailes 5 et 6 sont mobiles en réponse aux sollicitations de la chaussure, contre la force de rappel que leur applique un ressort 15.The wings 5 and 6 are movable in response to the stresses of the shoe, against the return force applied to them by a spring 15.

Le ressort 15 est logé dans le corps. Il agit sur un piston 16 également logé et guidé dans le corps pour un mouvement de translation longitudinal. Les figures montrent que le piston est logé et guidé dans un logement 17 du corps, et que le ressort est engagé à l'intérieur du piston. Son extrémité avant est en appui contre le fond du piston, situé du côté avant de l'élément de fixation. Une vis 20 dont la tête est retenue à l'avant du corps traverse par ailleurs le piston et le ressort, et présente vers l'arrière un écrou 21 qui retient l'extrémité arrière du ressort. Une rotation de la vis entraíne le ressort en translation, ce qui permet d'ajuster la compression initiale du ressort.The spring 15 is housed in the body. It acts on a piston 16 also housed and guided in the body for a longitudinal translational movement. The figures show that the piston is housed and guided in a housing 17 of the body, and that the spring is engaged inside the piston. Its front end is pressed against the bottom of the piston, located on the front side of the fixing element. A screw 20 whose head is retained at the front of the body, moreover passes through the piston and the spring, and has a nut 21 at the rear which retains the rear end of the spring. A rotation of the screw drives the spring in translation, which adjusts the initial compression of the spring.

Les ailes 5 et 6 présentent au-delà de leur axe d'articulation au corps 7 et 8 un retour 5a, 6a, qui entraíne vers l'arrière le piston 16 en prenant appui contre un épaulement 23 situé dans la partie arrière supérieure du piston 16. The wings 5 and 6 have beyond their axis of articulation to the body 7 and 8 a return 5a, 6a, which drives the piston 16 rearward, bearing against a shoulder 23 located in the upper rear part of the piston 16.

Dans le mode de réalisation illustré, l'élément 1 présente un mécanisme de compensation qui allège la force de rappel que le ressort 15 exerce sur les ailes 5 et 6.In the illustrated embodiment, element 1 has a mechanism for compensation which alleviates the restoring force that the spring 15 exerts on the wings 5 and 6.

Ce mécanisme comprend un basculeur articulé 30 qui est logé en partie entre les branches 3a et 3b de l'embase 3. Le basculeur est articulé autour d'un axe 32 porté par ces branches.This mechanism comprises an articulated rocker 30 which is partly housed between the branches 3a and 3b of the base 3. The rocker is articulated around an axis 32 carried by these branches.

Le basculeur 30 présente un bras approximativement horizontal 33 qui est accessible sur l'arrière de l'élément de fixation entre les branches 3a et 3b de l'embase. Le basculeur 30 présente en outre un bras approximativement vertical formé par deux patins latéraux qui passent de chaque côté du piston 16, et qui portent chacun sur un épaulement 37 que le piston présente sous l'épaulement 23 des ailes. Seul le patin 35 est visible en partie dans les figures.The rocker 30 has an approximately horizontal arm 33 which is accessible on the rear of the fixing element between the branches 3a and 3b of the base. The rocker 30 also has an approximately vertical arm formed by two lateral pads which pass on each side of the piston 16, and which each bear on a shoulder 37 which the piston has under the shoulder 23 wings. Only the shoe 35 is partially visible in the figures.

Une tige de liaison 36 relie également le basculeur 30 à la partie arrière du corps 2. L'articulation de la tige 36 au basculeur 30 est située en avant de l'axe 32. La tige transmet au basculeur 30, et donc au piston 16, les mouvements d'élévation du corps qui se produisent notamment lors d'une sollicitation verticale de la chaussure dans la mâchoire.A connecting rod 36 also connects the rocker 30 to the rear part of the body 2. The articulation of the rod 36 to the rocker 30 is located in front of the axis 32. The rod transmits to the rocker 30, and therefore to the piston 16, the elevation movements of the body which occur in particular during a vertical stress on the shoe in the jaw.

L'élément présente en arrière de la mâchoire une plaque d'appui 40 prévue pour recevoir l'avant de la semelle de chaussure. La partie avant de la pédale est mobile verticalement, et surplombe le bras horizontal 33 du basculeur 30. Un ressort 51 assure le rappel élastique vers le haut de l'avant de la pédale.The element has a support plate 40 provided behind the jaw to receive the front of the shoe sole. The front part of the pedal is vertically movable, and overhangs the horizontal arm 33 of the rocker 30. A spring 51 ensures the elastic return to the top of the front of the pedal.

La figure 4 illustre un premier mode de mise en oeuvre de l'invention. Selon ce mode de mise en oeuvre, l'une des deux ailes présente un retour plus court que l'autre de façon que les ailes sollicitent le piston avec des bras de levier différents.FIG. 4 illustrates a first embodiment of the invention. according to this mode of implementation, one of the two wings has a shorter return than the other so that the wings stress the piston with different lever arms.

Ainsi, dans la figure 4, est représenté un élément de retenue avec,le retour 45a de l'aile 45 plus court que le retour de l'autre aile 46.Thus, in Figure 4, there is shown a retaining element with, the return 45a of wing 45 shorter than the return of the other wing 46.

L'aile 45 attaque le piston avec un bras de levier plus court, d'où il résulte que cette aile 45 sera plus facile à ouvrir que l'autre aile 46.Wing 45 attacks the piston with a shorter lever arm, where it follows that this wing 45 will be easier to open than the other wing 46.

On pourrait obtenir un résultat semblable en décalant l'axe d'articulation de l'une des ailes vers l'intérieur, c'est-à-dire vers le plan médian dont la trace est schématisée en 47.A similar result could be obtained by shifting the axis of articulation by one of the wings inward, that is to say towards the median plane whose trace is shown schematically in 47.

Le décalage de l'axe pourrait aussi avoir deux composantes, vers l'intérieur et vers l'avant, pour à la fois augmenter le bras de levier avec lequel la chaussure sollicite l'aile, et diminuer le bras de levier avec lequel l'aile attaque le piston.The axis offset could also have two components, inward and forward, to both increase the lever arm with which the shoe stresses the wing, and decrease the lever arm with which the wing attacks the piston.

La figure 5 illustre une autre variante de mise en oeuvre de l'invention. Selon cette variante, l'aile qui présente la résistance la plus faible à l'ouverture, en l'occurrence l'aile 48, présente un retour d'aile 48a dont la face d'appui contre l'épaulement du piston est taillée comme une rampe en biseau qui présente une face d'appui oblique par rapport à une direction longitudinale. Le piston 49 présente un épaulement d'appui 50 qui est prévu pour coopérer avec la face d'appui de la rampe pour que la surface de contact entre le retour d'aile et l'épaulement se déplace le long de la rampe en biseau au cours de la rotation de l'aile. La forme de l'épaulement d'appui tient compte de la forme de la rampe de l'aile, et tient compte également du fait que le retour d'aile se déplace selon un mouvement circulaire, mais qu'il anime l'épaulement d'un mouvement dirigé selon une direction longitudinale. Par exemple, comme le représente la figure, l'épaulement présente un bord d'attaque pour le retour d'aile relativement fin et de forme arrondie. En d'autres termes, au cours de l'ouverture de l'aile, le retour d'aile glisse sur l'épaulement du piston, et, de ce fait, selon une direction longitudinale, le retour d'aile présente un mouvement linéaire de plus grande amplitude que le mouvement linéaire du piston que le retour entraíne. Dans ces conditions, la libération de la chaussure du côté de l'aile 48 est obtenue pour une compression du ressort plus faible que du côté de l'autre aile. On peut en effet considérer que cette libération se produit pour une ouverture d'aile d'angle déterminé.FIG. 5 illustrates another variant implementation of the invention. according to this variant, the wing which has the lowest resistance to opening, in the occurrence of wing 48, has a return of wing 48a whose bearing face against the piston shoulder is cut like a beveled ramp which has a support face oblique to a longitudinal direction. Piston 49 has a support shoulder 50 which is designed to cooperate with the face support of the ramp so that the contact surface between the wing return and the shoulder moves along the beveled ramp during the rotation of the wing. The shape of the support shoulder takes into account the shape of the ramp the wing, and also takes into account that the wing return moves in a circular movement, but that it animates the shoulder of a movement directed according to a longitudinal direction. For example, as shown in the figure, the shoulder has a leading edge for the relatively fine wing return and round shape. In other words, during the opening of the wing, the wing return slides on the shoulder of the piston, and, therefore, in a longitudinal direction, the wing return has a linear movement of greater amplitude than the linear movement of the piston that the return drives. Under these conditions, the release of the shoe from the side of the wing 48 is obtained for compression of the spring weaker than on the side of the other wing. We can indeed consider that this release occurs for a wing opening of determined angle.

La figure 6 montre l'aile 48 en position ouverte, avec son retour 48a qui a glissé le long de l'épaulement du fait de sa rotation autour de l'axe de l'aile.Figure 6 shows the wing 48 in the open position, with its return 48a which has slid along the shoulder due to its rotation around the axis of the wing.

Naturellement, toute autre forme appropriée convient pour les surfaces de contact du bec d'aile et de l'épaulement, pourvu que, selon une direction longitudinale, on obtienne un mouvement relatif du retour par rapport au piston.Of course, any other suitable shape is suitable for the surfaces of wing beak and shoulder contact, provided that in one direction longitudinal, we get a relative movement of the return relative to the piston.

L'autre aile 52 de l'élément de retenue présente un appui traditionnel avec un retour d'aile 52a en appui contre un épaulement transversal 53 du piston.The other wing 52 of the retaining element has a traditional support with a wing return 52a bearing against a transverse shoulder 53 of the piston.

Les figures 7 à 9 montrent un autre mode de mise en oeuvre de l'invention. Selon ce mode de mise en oeuvre, le piston 60 présente dans sa partie supérieure un épaulement transversal d'appui 61, qui offre un appui aux deux retours 62a et 63a des ailes 62 et 63. Entre l'épaulement transversal et les retours d'aile est interposé un volet mobile 65. Le volet est plus particulièrement visible en figure 8. Du côté des retours d'aile, il présente une face d'appui avec deux zones d'appui 66 et 67, sensiblement dans le prolongement l'une de l'autre, une pour chaque retour d'aile. De l'autre côté, le volet porte deux zones d'appui 68 et 69, qui forment entre elles un dièdre d'angle supérieur à un angle plat, si bien qu'une portion du volet est biseautée. Du côté non biseauté du volet, les faces 67 et 69 sont sensiblement parallèles entre elles. Entre les zones 68, 69, le volet porte une arête 70 ou tout autre moyen approprié de portée contre l'épaulement transversal 53 du piston, et d'articulation autour d'une direction verticale. L'arête est décalée du côté où le volet est biseauté sans dépasser toutefois le niveau de l'appui du retour d'aile 62a contre zone 66. De préférence, à sa face tournée vers le volet, l'épaulement présente une saignée ou tout autre moyen approprié pour recevoir l'arête 70 du volet. Tout autre moyen de support et d'articulation entre ces deux éléments convient également.Figures 7 to 9 show another embodiment of the invention. According to this embodiment, the piston 60 has in its upper part a transverse support shoulder 61, which provides support for the two returns 62a and 63a of the wings 62 and 63. Between the transverse shoulder and the wing returns is interposed a movable flap 65. The flap is more particularly visible in FIG. 8. On the wing return side, it has a bearing face with two bearing zones 66 and 67, substantially in line with one another, one for each return wing. On the other side, the flap carries two support zones 68 and 69, which form between they have a dihedral angle greater than a flat angle, so that a portion of the flap is beveled. On the non-beveled side of the flap, the faces 67 and 69 are substantially parallel to each other. Between zones 68, 69, the flap carries an edge 70 or all other suitable means of bearing against the transverse shoulder 53 of the piston, and articulation around a vertical direction. The edge is shifted to the side where the flap is beveled without however exceeding the level of the wing return support 62a against zone 66. Preferably, with its face facing the flap, the shoulder has a groove or any other appropriate means to receive the edge 70 of the shutter. Any other means of support and articulation between these two elements also suitable.

Les ailes 62 et 63 présentent chacune une butée d'appui qui définit leur position de repos. Cette butée est formée par exemple par les appuis de la face interne 72, 73 des ailes contre des butées solidaires du corps. Ces butées ne sont pas représentées dans les figures. De façon connue, ces butées peuvent être formées par des cloisons verticales qui relient la partie supérieure et la partie inférieure du corps.The wings 62 and 63 each have a support stop which defines their rest position. This stop is formed for example by the supports of the face internal 72, 73 of the wings against stops integral with the body. These stops are not not shown in the figures. In known manner, these stops can be formed by vertical partitions which connect the upper part and the part lower body.

La construction qui vient d'être décrite fonctionne de la façon suivante.The construction which has just been described operates in the following manner.

En position de repos, le ressort rappelle les ailes vers leur position de repos. Le volet 65 est maintenu avec sa face 69 en appui contre l'épaulement transversal 61.In the rest position, the spring returns the wings to their rest position. The flap 65 is held with its face 69 in abutment against the transverse shoulder 61.

En cas d'ouverture de l'aile 63 située du côté non biseauté du volet, le retour d'aile 63a entraíne avec lui le volet dont les deux faces parallèles 67 et 69 se trouvent pincées entre le retour d'aile et l'épaulement transversal. Le mouvement du retour d'aile selon une direction longitudinale se transmet directement au piston.If wing 63 on the non-beveled side of the flap is opened, the return wing 63a carries with it the flap, the two parallel faces 67 and 69 of which find pinched between the wing return and the transverse shoulder. Movement wing return in a longitudinal direction is transmitted directly to the piston.

Lorsque l'aile 63 est sollicitée à l'ouverture, le retour 63a appuie contre la face 66 du volet. Derrière le retour 62a, le volet n'est pas en appui direct contre l'épaulement. Il est en appui sur l'épaulement par l'intermédiaire de l'arête 70, et il trouve un autre appui contre le retour 63a de l'autre aile. Le retour d'aile entraíne le piston en utilisant le volet comme un levier. La figure 9 illustre ce mode de fonctionnement.When the wing 63 is requested to open, the return 63a presses against the face 66 of the shutter. Behind the return 62a, the flap is not in direct support against the shoulder. It is supported on the shoulder by means of the edge 70, and it finds another support against the return 63a of the other wing. The wing return causes the piston using the flap as a lever. Figure 9 illustrates this mode of operation.

Le déplacement du piston et la force de résistance que le piston oppose à l'ouverture de l'aile sont diminués du rapport des bras de levier entre les différents appuis du volet. L'aile 63 qui est située du côté du biseau du volet s'ouvre plus facilement que l'autre aile. La position de l'arête relativement aux zones d'appui des deux retours d'aile détermine le rapport des bras de levier et donc le rapport de diminution des forces. L'angle de biseautage du volet détermine avec la position de l'arête 70 la course d'ouverture de l'aile 62 au-delà de laquelle la face 68 du volet 65 vient en appui contre l'épaulement. A ce stade de basculement du volet, le déplacement du volet devient égal à celui du piston.The displacement of the piston and the resistance force that the piston opposes the wing opening are reduced by the ratio of the lever arms between the different shutter support. The wing 63 which is located on the side of the bevel of the flap opens more easily than the other wing. The position of the edge relative to the support zones of the two wing returns determines the ratio of the lever arms and therefore the ratio of decrease in strength. The bevel angle of the flap determines with the position of edge 70 the opening stroke of wing 62 beyond which face 68 of flap 65 bears against the shoulder. At this stage of tilting of the flap, the movement of the flap becomes equal to that of the piston.

En variante, la face 68 du volet pourrait être entièrement ou partiellement incurvée, de façon à avoir une diminution de vitesse variable entre la vitesse linéaire du retour d'aile, et celle du piston.As a variant, the face 68 of the flap could be entirely or partially curved, so as to have a variable speed decrease between the speed linear of the wing return, and that of the piston.

La face 66 pourrait aussi être incurvée ou présenter une forme de rampe pour compenser le basculement du volet 65 et le mouvement relatif entre le retour d'aile 62a et le volet 65 au cours de l'ouverture de l'aile.The face 66 could also be curved or have a ramp shape for compensate for the tilting of the flap 65 and the relative movement between the wing return 62a and the flap 65 during the opening of the wing.

D'autres modes de mise en oeuvre ou variantes pourraient être adoptées sans pour autant sortir du cadre de l'invention. Other modes of implementation or variants could be adopted without departing from the scope of the invention.

En particulier, le piston pourrait être remplacé par un tirant ou tout autre organe approprié de transmission d'effort guidé par rapport au corps.In particular, the piston could be replaced by a tie rod or any other appropriate force transmission organ guided with respect to the body.

On pourrait aussi combiner entre eux les différents modes de réalisation ou variantes qui ont été décrits.We could also combine the different embodiments or variants which have been described.

Egalement, il va de soi que pour une paire d'éléments de retenue, chacun des éléments présente une asymétrie de même nature, qui s'exerce de façon inverse, c'est-à-dire, par exemple, qui diminue l'effort de retenue des ailes externes.Also, it goes without saying that for a pair of retaining elements, each of the elements present an asymmetry of the same nature, which is exerted in reverse, that is to say, for example, which reduces the retaining force of the outer wings.

Claims (7)

  1. Element for the front retention of a boot on a ski, having a base (3) provided to be integrally connected to the ski, a body (2) mounted on the base, two wings (5, 6, 45, 46, 48, 52, 62, 63) that are mobile with respect to the body about substantially vertical axes, and having beyond their articulation axis a wing return (5a, 6a, 45a, 46a, 48a, 52a, 62a, 63a), a spring (15) housed in the body, a transmission member (16, 60) guided with respect to the body connecting each of the wing returns to the spring, characterized in that it has means for reducing the longitudinal displacement of the transmission member (16, 60) with respect to the displacement along a longitudinal direction of one (48a, 63a) of the wing returns.
  2. Element according to claim 1, characterized in that one (48a) of the wing returns takes support against the transmission member by means of a bevel cut ramp that takes support against a shoulder (50).
  3. Element according to claim 2, characterized in that the shoulder (50) has a rounded leading edge.
  4. Element according to claim 1, characterized in that a flap is inserted between the returns (62a, 63a) of the wings (62, 63) and a transverse shoulder (61) of the transmission member, that the flap has between one (63a) of the wing returns and the shoulder a portion limited by two surfaces (67, 69) that are substantially parallel, and another beveled portion, the two portions being demarcated by a substantially vertical ridge (70) that takes support against the shoulder (61).
  5. Element according to claim 4, characterized in that the ridge (70) is offset toward the side of the beveled portion of the flap.
  6. Element according to claim 1, characterized in that one (45) of the wings has a wing return (45a) that is shorter than the other wing return.
  7. Pair of retaining elements, characterized in that it has two elements according to any of the preceding claims, whose means for reducing the longitudinal displacement of the transmission member are arranged in the opposite manner.
EP97106532A 1996-05-15 1997-04-21 Sole hold-down element for boots on skis Expired - Lifetime EP0807453B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9606327A FR2748668B1 (en) 1996-05-15 1996-05-15 RETAINING ELEMENT OF THE FRONT OF A SHOE ON A SKI
FR9606327 1996-05-15

Publications (2)

Publication Number Publication Date
EP0807453A1 EP0807453A1 (en) 1997-11-19
EP0807453B1 true EP0807453B1 (en) 2003-04-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106532A Expired - Lifetime EP0807453B1 (en) 1996-05-15 1997-04-21 Sole hold-down element for boots on skis

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EP (1) EP0807453B1 (en)
AT (1) ATE236691T1 (en)
DE (1) DE69720584T2 (en)
FR (1) FR2748668B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806639B1 (en) * 2000-03-23 2002-06-21 Emery Sa IMPROVEMENT FOR A DEVICE FOR RETAINING A SKI SHOE ON A SKI
FR2808454B1 (en) 2000-05-04 2002-08-02 Salomon Sa RETAINING ELEMENT OF THE FRONT OF A SHOE ON A SKI
FR2808453B1 (en) 2000-05-04 2002-08-02 Salomon Sa RETAINING ELEMENT OF THE FRONT OF A SHOE ON A SKI

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807074A1 (en) * 1968-11-05 1970-05-27 Augustin Dr Ing Dietmar Asymmetrical ski safety bindings (toe piece) against turning falls
DE3725709A1 (en) * 1987-08-03 1989-02-16 Marker Deutschland Gmbh FRONT JAWS FOR SAFETY SKI BINDINGS
FR2722421B1 (en) * 1994-07-13 1996-09-27 Salomon Sa Societe Anonyme ALPINE SKI FIXING ELEMENT
FR2727029B1 (en) * 1994-11-21 1997-01-24 Salomon Sa ASSEMBLY OF SHOE RETAINING ELEMENTS ON SLIDING BOARDS

Also Published As

Publication number Publication date
ATE236691T1 (en) 2003-04-15
DE69720584T2 (en) 2003-11-27
FR2748668B1 (en) 1998-07-03
FR2748668A1 (en) 1997-11-21
EP0807453A1 (en) 1997-11-19
DE69720584D1 (en) 2003-05-15

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