EP2527015A1 - Heelpiece of a safety binding for ski boot - Google Patents

Heelpiece of a safety binding for ski boot Download PDF

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Publication number
EP2527015A1
EP2527015A1 EP12169308A EP12169308A EP2527015A1 EP 2527015 A1 EP2527015 A1 EP 2527015A1 EP 12169308 A EP12169308 A EP 12169308A EP 12169308 A EP12169308 A EP 12169308A EP 2527015 A1 EP2527015 A1 EP 2527015A1
Authority
EP
European Patent Office
Prior art keywords
heel
projection
axis
movable body
ski boot
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
EP12169308A
Other languages
German (de)
French (fr)
Other versions
EP2527015B1 (en
Inventor
Frédéric Farges
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skis Rossignol SA
Original Assignee
Skis Rossignol SA
Rossignol SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Skis Rossignol SA, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP2527015A1 publication Critical patent/EP2527015A1/en
Application granted granted Critical
Publication of EP2527015B1 publication Critical patent/EP2527015B1/en
Active 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0844—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable the body pivoting about a transverse axis
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0846—Details of the release or step-in mechanism
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0848—Structure or making

Definitions

  • the invention relates to a "sliding body" type safety binding heel for a ski boot, that is to say a device intended to securely hold the back of a shoe on a ski by exerting a pressing on the heel of the shoe while pressing forward the entire boot against a device before abutment, while ensuring an automatic release of the heel of the boot in case of falling before the skier under the effect of the application by the heel on the heel of a triggering force greater than a predetermined threshold.
  • a fixing device comprising a stop for receiving the front portion of a ski boot and such a heel, and a ski on which is fixed such a heel.
  • a first family of heels is based on a fixed body comprising the trigger mechanism of the heel and a very simple separate element, rotatable relative to this body, lever type, comprising at its front end a jaw to grab the heel of the ski boot.
  • the rotation of this lever relative to the fixed body allows the heel to occupy two closed and open positions respectively fix or release the heel of the shoe.
  • this family of fixing heel has the main disadvantage that the essential functions of the fastener, namely the position adjustment function and the release function, are united in a single body, which makes the design and the design difficult. interview.
  • the present invention is concerned with a second family of heels; said "moving body", which rests on a movable body that can occupy a closed position and an open position, and which incorporates a trigger mechanism.
  • This movable body comprises at its front end a jaw to grip the heel of a shoe in the closed position and in its rear part the trigger mechanism that allows to release the back of the shoe in case of significant effort as it is the case in a skier's fall forward.
  • the body is pivotally mounted about a suspended axis connected to the heel, to occupy either the closed position of practice of skiing or the open position in which the skier can remove his shoe from the heel.
  • This type of heel described for example by the document EP0893146 , can trigger the fixation to very high efforts, particularly suitable for ski racing.
  • the document EP1900400 discloses another solution in which the axis of rotation of the movable body is suspended by its ends by means of two lateral arms extending from the base, in the manner of an inverted U-shaped stirrup. It has a section having significant dimensions, which induces cooperation with a heel grip and a movable body of large volumes and more generally of a very cumbersome heel.
  • the hinge pin is externally provided with a trigger surface. Because of the large dimensions of the section of the hinge pin, the known solution to constitute the trigger surface is to develop a shape generally planar flat type, recessed relative to the rest of the cylindrical part constituting the hinge axis.
  • the object of the present invention is to propose a heel type of "moving body" according to the second family, that is to say implementing a hinged axis of articulation, which retains the advantages mentioned above but n 'not having the disadvantages.
  • the present invention seeks a solution of heel with movable body simpler, lighter, less bulky, and heaving more user-friendly.
  • the invention is based on a heel safety fixing for ski boot comprising a movable body pivotally mounted about a hinge pin suspended by two lateral arms connected to a base, the movable body comprising a spring trigger acting on a movable piston cooperating with a trigger surface of the hinge pin, so as to occupy a first position corresponding to a closed position of the heel piece in which a heel catch arranged at one end of the movable body is intended to hold the heel of a ski boot on the ski, and to be able to occupy a second position corresponding to an open position of the heel, characterized in that the triggering surface is formed by a protrusion disposed in relief relative to the rest of the hinge axis.
  • the hinge axis can be formed in a generally cylindrical part, the ratio between the radius (r1) of the hinge axis at the level of the projection top and the radius (r2) on the rest of the axis. of articulation is greater than 1.5, or greater than 1.7.
  • the projection may extend over at least a portion of the length of the hinge pin in the transverse direction y and extends longitudinally substantially toward the rear of the heel.
  • the movable body may comprise a through opening of non-circular shape to receive the hinge pin with its projection, and this opening may be at least partially covered by an arm.
  • the projection may have a generally triangular section, with a rounded vertex surrounded by two respectively upper and lower slopes.
  • the upper slope may be rectilinear and extend substantially in the longitudinal direction (x).
  • the direction (D1) of the upper slope can form an angle ( ⁇ 1) less than 20 degrees relative to a horizontal plane (P).
  • the lower slope may be rectilinear and extend in a direction (D2) inclined approaching the base by going longitudinally towards the front of the heel.
  • the side arms may define a space between the transverse ends of the projection and themselves so as to receive a portion of the movable body.
  • the side arms may include openings for receiving an end of the hinge pin.
  • the openings of the side arms may be of smaller section than the section of the hinge pin at its projection so that this hinge axis can not pass through an opening.
  • the hinge axis can be locked transversely at each lateral arm by a stop washer reported in the opening of the arm, the washer being equipped on the periphery of its inner face with a double series of elements of blocking in cooperating rotation respectively with locking elements of the opening of the side arms and with complementary locking elements related to the hinge axis.
  • the hinge pin may be of plastic material, or fiber reinforced plastic material.
  • the hinge axis may adopt a generally tubular shape and a reinforcing insert may be disposed within the hinge axis so as to strengthen the heel.
  • the invention also relates to a device for attaching a ski boot to a ski, comprising a stop for receiving the front portion of a ski boot, and characterized in that it comprises a heel piece as described hereinabove. to receive the back of the ski boot.
  • the invention also relates to a ski comprising a heel safety fastening for ski boot as described above.
  • the longitudinal direction x as the horizontal direction extending from the front to the rear of the heel
  • the transverse direction y the horizontal direction perpendicular to the direction x
  • the vertical direction z perpendicular to the horizontal plane defined by the x and y axes, pointing upwards.
  • the heel 10 comprises a movable tubular body 11 pivotally mounted about a hinge pin secured to a carriage by its lateral ends.
  • the carriage is adapted for mounting on a ski, by means of slides arranged on the lateral parts of a lower base 12 of the carriage, in order to allow the adjustment of its longitudinal position on a ski to adapt it to different sizes. shoes.
  • the movable body 11 comprises in its front part a jaw or "gripping heel" 13 adapted to maintain the standardized rear heel of a ski boot.
  • the movable body 11, more particularly visible on the Figures 1 to 4 encloses a trigger mechanism that allows the automatic passage of the heel of the ski closed position configuration, shown on the Figures 1 and 2 , in the open position represented in the Figures 3 and 4 , in which the ski boot can escape from the heel grip, in particular the heel grip 13.
  • This triggering is automatically implemented in the case of a triggering force transmitted by the heel of the boot to the heel.
  • heel gripper 13 which is greater than a predetermined threshold, for example in the event of the skier falling forward.
  • the movable body 11 passes from the closed configuration corresponding to the closed position of the heel piece 10 to the open configuration corresponding to the open position of the heel piece by a pivoting movement relative to the carriage, about an articulation axis 14.
  • the movable body 11 comprises various elements in its interior volume, among which a release spring 15 bears against the abutment 16 in the upper rear part of the body 11 and bears on a piston 17 to its other end.
  • This piston 17 cooperates with a triggering surface 18 provided on the hinge axis, detailed below.
  • the triggering threshold can be modified in known manner by modifying the degree of compression of the spring 15 by a set screw 19 positioned at the rear end of the movable body 11 and able to move the stopper 16 internally along the movable body 11.
  • the movable body 11 thus has the particularity of being sealed downwardly, from its gripping heel 13 to the entire stroke of the piston 17.
  • a bottom 33 can be attached sealingly and removable inside. the heel gripper 13 on the movable body 11 to close an opening for mounting the release mechanism inside the movable body 11.
  • the trigger surface 18 is carried externally by the hinge pin 14, which is suspended, that is to say, maintained on the base only at its two lateral ends and not in its central part, by two lateral arms 20 which each extend from the base 12 being offset from each other in the transverse direction y by a spacing substantially equal to the width of the heel gripper.
  • the lateral arms 20 have the essential function of taking up and supporting the forces transmitted to the hinge pin 14 at the trigger surface 18 under the action of its cooperation with the piston 17 mobile, the spring 15 acting on it piston during its movement relative to the triggering surface 18.
  • An essential characteristic of the concept of the invention consists in providing that the triggering surface 18 is formed by a projection 21 of the hinge pin, which is particularly visible on the figures 2 , 4 and 9 .
  • This projection is at least at the central portion of the hinge axis, is oriented towards the rear of the heel so as to cooperate with the piston of the trigger mechanism, generally on the side opposite to the gripping heel 13 relative to the hinge axis 14. It forms a raised volume outside the cylinder in which the portion of the hinge axis disposed towards the front of the heel piece.
  • the projection 21 is thus arranged in relief relative to the rest of the hinge axis 14. It is particularly visible on the Figures 6 and 7 .
  • the hinge axis 14 may in particular extend over at least a part of the length of the hinge axis 14 in the transverse direction y.
  • its section is constant along the hinge axis 14. It performs an additional function of reinforcing the hinge pin 14 in the manner of a stiffening rib in addition to its function main trigger.
  • the rigidity thus provided by the projection 21 advantageously makes it possible to provide relatively small dimensions of the section of the hinge axis 14 outside the projection area.
  • a lightweight and economical material such as a simple plastic for example, possibly reinforced with glass fibers or any equivalent. This solution also becomes less expensive than the solutions of the state of the art which require the use of a metal part.
  • the projection thus advantageously belongs to the hinge axis, forms a single element with this axis, a monolithic assembly.
  • it may be a separate part of the hinge axis but fixed only on the axis of articulation, the latter being for example cylindrical or quasi-cylindrical, to obtain a substantially equivalent final result.
  • the projection 21 may be shaped so as to present, in a cutting plane (x, z) having a normal oriented in the transverse direction y, a generally triangular section, with a rounded top 22 forming a cusp on which the piston stay pressed in the open position. It is surrounded by two slopes 23, 24 respectively upper and lower.
  • the piston bears on the upper slope 23 in the closed position of the heel.
  • the general shape of each of these slopes can be any as long as it is adapted to the desired function, for example of concave or convex shape.
  • the upper slope 23 may be rectilinear, so that the triggering surface 18 has a planar upper surface.
  • the lower slope 24 may be rectilinear, or may comprise a larger volume of material, extending downwardly under the straight line D2 for example, so as to stiffen the hinge axis.
  • the shape, the length and the orientation of the slopes 23, 24 can be modulated according to the desired result in terms of the triggering characteristics (for example the value of the triggering threshold predetermined, or the angular amplitude of the movable body 11).
  • the triggering characteristics for example the value of the triggering threshold predetermined, or the angular amplitude of the movable body 11.
  • the upper slope 23 is rectilinear, it can extend substantially in the longitudinal direction x, its direction D1 being able to form an angle ⁇ 1 less than 20 degrees with respect to a horizontal plane (x, y) marked P.
  • a compromise is chosen for the shape of the projection and the piston with which it cooperates to obtain the optimal triggering operation.
  • the hinge axis 14 can be formed in a generally cylindrical part with the exception of the portion provided with the projection 21.
  • the ratio between the radius r1 of the hinge axis at the level of the projection 22 of the projection 21 and the radius r2 on the rest of the hinge axis 14, measured in particular in the direction towards the front of the heel, may be greater than 1.5, or even greater than 1.7: these choices represent a good compromise, allow to use a low stiffness spring and achieve a lower heaving effort.
  • This force is that to be applied to the end of the movable body 11 to manually control the passage of the closed position to the open position of the heel 10.
  • This compromise facilitates the use by the skier, while maintaining the usual trigger thresholds as defined by the ISO 9462.
  • the radius r1 may be of the order of 18 mm while the radius r2 may be of the order of 10 mm.
  • the hinge pin 14 may adopt a generally tubular shape, ie internally defining a bore allowing it to receive a reinforcing insert 25, solid or hollow, disposed inside the axis 14, so as to strengthen the heel piece 10.
  • the figure 9 illustrates further that the lateral arms 20 may delimit a space between the transverse ends of the projection 21 and themselves so as to receive the movable body 11.
  • the figure 5 shows for this purpose that the movable body 11 is equipped in its front part with a generally closed housing except for two openings 26 formed transversely in the lateral flanks of this housing to allow the shaft 14 to pass through the movable body 11 through and through this housing.
  • Each of the spaces between an arm 20 and a projecting end 21 is intended to receive a lateral flank of the housing.
  • the side arms 20 comprise openings 27 for receiving the ends of the hinge pin.
  • the latter is blocked transversely at each lateral arm 20 by a lock washer 28 (illustrated in FIG. figure 8 in detail) reported in the opening 27 of the arm.
  • the inner face of the washer 28 is equipped on its periphery with rotational locking elements 29, for example in the form of notches, cooperating with complementary locking elements 30 arranged on the periphery of the opening 27 of the arms 20.
  • the inner face of each stop washer 28 is furthermore equipped with additional locking elements 31 on its outer periphery, for example in the form of notches of greater height than the first notches mentioned above, cooperating with complementary locking elements 32 arranged on the outer periphery of the ends of the hinge pin 14.
  • the use of such double washers series of locking elements facilitates the assembly of all parts on the two side arms 20, including the assembly of parts 14, 25, 26, 28 particularly visible on the figure 5 in exploded perspective.
  • the hinge pin 14 is first inserted into the movable body 11 through the opening 26, then the movable body after its final assembly is integrated from above into force between the arms 20 which are slightly spaced elastically during this operation, then the assembly obtained receives the insertion of the two washers 28 mentioned above for the rotation locking explained above.
  • the hinge axis has a length slightly greater than the spacing at rest of the two arms 20.
  • the openings 27 of the lateral arms 20 comprise a format independent of that of the hinge pin 14 which does not pass through during assembly of the heel, and may in particular have a smaller section than that of the hinge pin at the projection.
  • the opening 26 of the movable body has a non-circular shape to receive the axis and its projection, as is particularly visible on the figure 10 .
  • this opening 26 is at least partially covered by the side arms 20 after mounting the heel.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The heelpiece has a tubular movable body mounted to pivot around a hinge pin (14) that is suspended by side arms connected to a lower base (12) of a carriage. The body has a release spring (15) acting on a movable piston (17) that is engaged with a release surface (18) of the pin so as to occupy closed and open positions of the heelpiece. A heel grip is arranged at an end of the body to maintain a heel of ski boot on skiing in the closed position. The release surface is formed by a projection (21) of the hinge pin arranged in relief with respect to rest of the hinge pin. An independent claim is also included for a safety binding of ski boot on a ski.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne une talonnière de fixation de sécurité de type « à corps mobile » pour chaussure de ski, c'est-à-dire un dispositif destiné à maintenir de manière sécurisée l'arrière d'une chaussure sur un ski en exerçant une pression sur le talon de la chaussure tout en pressant vers l'avant l'ensemble de la chaussure contre un dispositif avant de butée, tout en assurant une libération automatique du talon de la chaussure en cas de chute avant du skieur sous l'effet de l'application par le talon sur la talonnière d'un effort de déclenchement supérieur à un seuil prédéterminé.The invention relates to a "sliding body" type safety binding heel for a ski boot, that is to say a device intended to securely hold the back of a shoe on a ski by exerting a pressing on the heel of the shoe while pressing forward the entire boot against a device before abutment, while ensuring an automatic release of the heel of the boot in case of falling before the skier under the effect of the application by the heel on the heel of a triggering force greater than a predetermined threshold.

Elle concerne également un dispositif de fixation comprenant une butée pour recevoir la partie avant d'une chaussure de ski et une telle talonnière, ainsi qu'un ski sur lequel est fixée une telle talonnière.It also relates to a fixing device comprising a stop for receiving the front portion of a ski boot and such a heel, and a ski on which is fixed such a heel.

État de la techniqueState of the art

Une première famille de talonnières, dites « à corps fixe », repose sur un corps fixe comprenant le mécanisme de déclenchement de la talonnière et sur un élément distinct très simple, mobile en rotation par rapport à ce corps, de type levier, comprenant à son extrémité avant une mâchoire pour agripper le talon de la chaussure de ski. La rotation de ce levier par rapport au corps fixe permet à la talonnière d'occuper deux positions fermée et ouverte pour respectivement fixer ou libérer le talon de la chaussure.A first family of heels, called "fixed body", is based on a fixed body comprising the trigger mechanism of the heel and a very simple separate element, rotatable relative to this body, lever type, comprising at its front end a jaw to grab the heel of the ski boot. The rotation of this lever relative to the fixed body allows the heel to occupy two closed and open positions respectively fix or release the heel of the shoe.

Toutefois cette famille de talonnière de fixation présente l'inconvénient principal que les fonctions essentielles de la fixation, à savoir la fonction de réglage en position et la fonction de déclenchement, sont réunies dans un corps unique, ce qui rend délicat la conception et l'entretien.However, this family of fixing heel has the main disadvantage that the essential functions of the fastener, namely the position adjustment function and the release function, are united in a single body, which makes the design and the design difficult. interview.

La présente invention s'intéresse à une seconde famille de talonnières ; dites « à corps mobile », qui repose sur un corps mobile pouvant occuper une position fermée et une position ouverte, et qui intègre un mécanisme de déclenchement. Ce corps mobile comprend à son extrémité avant une mâchoire pour agripper le talon d'une chaussure dans la position fermée et dans sa partie arrière le mécanisme de déclenchement qui permet de libérer l'arrière de la chaussure en cas d'effort important comme c'est le cas dans une chute du skieur vers l'avant. Le corps est monté à pivotement autour d'un axe suspendu lié à la talonnière, pour occuper soit la position fermée de pratique du ski soit la position ouverte dans laquelle le skieur peut retirer sa chaussure de la talonnière. Ce type de talonnière, décrite par exemple par le document EP0893146 , permet de déclencher la fixation à des efforts très élevés, particulièrement adaptés au ski de compétition.The present invention is concerned with a second family of heels; said "moving body", which rests on a movable body that can occupy a closed position and an open position, and which incorporates a trigger mechanism. This movable body comprises at its front end a jaw to grip the heel of a shoe in the closed position and in its rear part the trigger mechanism that allows to release the back of the shoe in case of significant effort as it is the case in a skier's fall forward. The body is pivotally mounted about a suspended axis connected to the heel, to occupy either the closed position of practice of skiing or the open position in which the skier can remove his shoe from the heel. This type of heel, described for example by the document EP0893146 , can trigger the fixation to very high efforts, particularly suitable for ski racing.

Le document EP1900400 décrit une autre solution dans laquelle l'axe de rotation du corps mobile est suspendu par ses extrémités grâce à deux bras latéraux s'étendant depuis l'embase, à la manière d'un étrier en U inversé. Il présente une section ayant des dimensions importantes, qui induit une coopération avec un agrippe-talon et un corps mobile de volumes importants et plus globalement d'une talonnière très encombrante. Dans cette construction, l'axe d'articulation est pourvu extérieurement d'une surface de déclenchement. En raison des grandes dimensions de la section de l'axe d'articulation, la solution connue pour constituer la surface de déclenchement consiste à aménager une forme globalement plane de type méplat, en creux par rapport au reste de la pièce cylindrique constitutive de l'axe d'articulation.The document EP1900400 discloses another solution in which the axis of rotation of the movable body is suspended by its ends by means of two lateral arms extending from the base, in the manner of an inverted U-shaped stirrup. It has a section having significant dimensions, which induces cooperation with a heel grip and a movable body of large volumes and more generally of a very cumbersome heel. In this construction, the hinge pin is externally provided with a trigger surface. Because of the large dimensions of the section of the hinge pin, the known solution to constitute the trigger surface is to develop a shape generally planar flat type, recessed relative to the rest of the cylindrical part constituting the hinge axis.

Toutefois, ce type de talonnière précédemment décrite possède les inconvénients suivants :

  • l'axe d'articulation, de par sa grande section et par l'obligation de métal, est lourd, complexe et couteux,
  • l'axe d'articulation, de par sa grande section, est encombrant, notamment en direction de l'avant de la talonnière. Il en résulte que le bras de levier de l'agrippe talon est grand, impliquant une obligation de grande raideur du ressort du mécanisme de déclenchement impliquant un corps mobile volumineux et lourd et des difficultés associées au moment du déchaussage.
However, this type of heel piece described above has the following drawbacks:
  • the axis of articulation, by its large section and by the obligation of metal, is heavy, complex and expensive,
  • the hinge axis, by its large section, is bulky, especially in the direction of the front of the heel. As a result, the lever arm of the heel gripper is large, implying an obligation of great stiffness spring trigger mechanism involving a bulky and heavy mobile body and difficulties associated with the moment of release.

Objet de l'inventionObject of the invention

Le but de la présente invention est de proposer une talonnière de type « à corps mobile » selon la seconde famille, c'est-à-dire mettant en oeuvre un axe d'articulation suspendu, qui conserve les avantages mentionnés ci-dessus mais n'en possédant pas les inconvénients.The object of the present invention is to propose a heel type of "moving body" according to the second family, that is to say implementing a hinged axis of articulation, which retains the advantages mentioned above but n 'not having the disadvantages.

Plus précisément, la présente invention recherche une solution de talonnière à corps mobile plus simple, moins lourde, moins volumineuse, et au déchaussage plus convivial.More specifically, the present invention seeks a solution of heel with movable body simpler, lighter, less bulky, and heaving more user-friendly.

A cet effet, l'invention repose sur une talonnière de fixation de sécurité pour chaussure de ski comprenant un corps mobile monté à pivotement autour d'un axe d'articulation suspendu par deux bras latéraux reliés à une embase, le corps mobile comprenant un ressort de déclenchement agissant sur un piston mobile coopérant avec une surface de déclenchement de l'axe d'articulation, de sorte à pouvoir occuper une première position correspondant à une position fermée de la talonnière dans laquelle un agrippe talon agencé à une extrémité du corps mobile est destiné à maintenir le talon d'une chaussure de ski sur le ski, et à pouvoir occuper une deuxième position correspondant à une position ouverte de la talonnière, caractérisée en ce que la surface de déclenchement est formée par une saillie disposée en relief par rapport au reste de l'axe d'articulation.For this purpose, the invention is based on a heel safety fixing for ski boot comprising a movable body pivotally mounted about a hinge pin suspended by two lateral arms connected to a base, the movable body comprising a spring trigger acting on a movable piston cooperating with a trigger surface of the hinge pin, so as to occupy a first position corresponding to a closed position of the heel piece in which a heel catch arranged at one end of the movable body is intended to hold the heel of a ski boot on the ski, and to be able to occupy a second position corresponding to an open position of the heel, characterized in that the triggering surface is formed by a protrusion disposed in relief relative to the rest of the hinge axis.

L'axe d'articulation peut être formé dans une pièce globalement cylindrique, le rapport entre le rayon (r1) de l'axe d'articulation au niveau du sommet de la saillie et le rayon (r2) sur le reste de l'axe d'articulation est supérieur à 1,5, ou supérieur à 1,7.The hinge axis can be formed in a generally cylindrical part, the ratio between the radius (r1) of the hinge axis at the level of the projection top and the radius (r2) on the rest of the axis. of articulation is greater than 1.5, or greater than 1.7.

Le ressort de déclenchement (15) présente une raideur respectant au moins l'une des propriétés suivantes :

  • pour un réglage jusqu'à Z12 de la talonnière, la raideur est inférieure à 200 N/mm, ou inférieure à 150 N/mm, ou inférieure ou égale à 120 N/mm ; et/ou
  • pour un réglage jusqu'à Z15 de la talonnière, la raideur est inférieure à 300 N/mm, voire inférieure à 200 N/mm, voire inférieure ou égale à 150 N/mm.
The release spring (15) has a stiffness that meets at least one of the following properties:
  • for adjustment up to Z12 of the heel, the stiffness is less than 200 N / mm, or less than 150 N / mm, or less than or equal to 120 N / mm; and or
  • for adjustment up to Z15 of the heel, the stiffness is less than 300 N / mm, or even less than 200 N / mm, or even less than or equal to 150 N / mm.

La saillie peut s'étendre sur au moins une partie de la longueur de l'axe d'articulation dans la direction transversale y et s'étend longitudinalement sensiblement en direction de l'arrière de la talonnière.The projection may extend over at least a portion of the length of the hinge pin in the transverse direction y and extends longitudinally substantially toward the rear of the heel.

Le corps mobile peut comprendre une ouverture traversante de forme non circulaire pour recevoir l'axe d'articulation avec sa saillie, et cette ouverture peut être au moins partiellement recouverte par un bras.The movable body may comprise a through opening of non-circular shape to receive the hinge pin with its projection, and this opening may be at least partially covered by an arm.

Dans un plan de coupe ayant une normale orientée dans la direction transversale, la saillie peut présenter une section globalement triangulaire, avec un sommet arrondi entouré de deux pentes respectivement supérieure et inférieure.In a sectional plane having a normal oriented in the transverse direction, the projection may have a generally triangular section, with a rounded vertex surrounded by two respectively upper and lower slopes.

La pente supérieure peut être rectiligne et s'étendre sensiblement dans la direction longitudinale (x).The upper slope may be rectilinear and extend substantially in the longitudinal direction (x).

La direction (D1) de la pente supérieure peut former un angle (α1) inférieur à 20 degrés par rapport à un plan horizontal (P).The direction (D1) of the upper slope can form an angle (α1) less than 20 degrees relative to a horizontal plane (P).

La pente inférieure peut être rectiligne et s'étendre selon une direction (D2) inclinée s'approchant de l'embase en allant longitudinalement vers l'avant de la talonnière.The lower slope may be rectilinear and extend in a direction (D2) inclined approaching the base by going longitudinally towards the front of the heel.

Les bras latéraux peuvent délimiter un espace entre les extrémités transversales de la saillie et eux-mêmes de sorte à pouvoir recevoir une partie du corps mobile.The side arms may define a space between the transverse ends of the projection and themselves so as to receive a portion of the movable body.

Les bras latéraux peuvent comprendre des ouvertures pour recevoir une extrémité de l'axe d'articulation.The side arms may include openings for receiving an end of the hinge pin.

Les ouvertures des bras latéraux peuvent être de section plus petite que la section de l'axe d'articulation au niveau de sa saillie de sorte que cet axe d'articulation ne peut pas passer au travers d'une ouverture.The openings of the side arms may be of smaller section than the section of the hinge pin at its projection so that this hinge axis can not pass through an opening.

L'axe d'articulation peut être bloqué transversalement au niveau de chaque bras latéral par une rondelle d'arrêt rapportée dans l'ouverture du bras, la rondelle étant équipée sur la périphérie de sa face intérieure d'une double série d'éléments de blocage en rotation coopérant respectivement avec des éléments de blocage de l'ouverture des bras latéraux et avec des éléments de blocage complémentaires liés à l'axe d'articulation.The hinge axis can be locked transversely at each lateral arm by a stop washer reported in the opening of the arm, the washer being equipped on the periphery of its inner face with a double series of elements of blocking in cooperating rotation respectively with locking elements of the opening of the side arms and with complementary locking elements related to the hinge axis.

L'axe d'articulation peut être en matériau plastique, ou en matériau plastique renforcé par des fibres.The hinge pin may be of plastic material, or fiber reinforced plastic material.

L'axe d'articulation peut adopter une forme globalement tubulaire et un insert de renfort peut être disposé à l'intérieur de l'axe d'articulation de manière à renforcer la talonnière.The hinge axis may adopt a generally tubular shape and a reinforcing insert may be disposed within the hinge axis so as to strengthen the heel.

L'invention porte aussi sur un dispositif de fixation d'une chaussure de ski sur un ski, comprenant une butée pour recevoir la partie avant d'une chaussure de ski, et caractérisé en ce qu'il comprend une talonnière telle que décrite ci-dessus pour recevoir la partie arrière de la chaussure de ski.The invention also relates to a device for attaching a ski boot to a ski, comprising a stop for receiving the front portion of a ski boot, and characterized in that it comprises a heel piece as described hereinabove. to receive the back of the ski boot.

L'invention porte aussi sur un ski comprenant une talonnière de fixation de sécurité pour chaussure de ski telle que décrite ci-dessus.The invention also relates to a ski comprising a heel safety fastening for ski boot as described above.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés sur les dessins annexés, dans lesquels :

  • les figures 1 et 2 illustrent un exemple de talonnière selon l'invention en position fermée, respectivement de côté et en coupe longitudinale,
  • les figures 3 et 4 illustrent la talonnière en position ouverte, respectivement de côté et en coupe longitudinale,
  • la figure 5 est en vue éclatée de la talonnière en perspective,
  • les figures 6 et 7 sont des vues de côté et en perspective de l'axe d'articulation de la talonnière des figures précédentes,
  • la figure 8 est une vue en perspective d'une rondelle d'arrêt,
  • la figure 9 est une vue en perspective du chariot et de l'axe d'articulation utilisés dans la talonnière des figures précédentes,
  • et la figure 10 représente une vue de côté du corps mobile de la talonnière.
Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given as non-restrictive examples and shown in the accompanying drawings, in which:
  • the Figures 1 and 2 illustrate an example of heel according to the invention in the closed position, respectively from the side and in longitudinal section,
  • the Figures 3 and 4 illustrate the heel in the open position, respectively from the side and in longitudinal section,
  • the figure 5 is in exploded view of the heel in perspective,
  • the Figures 6 and 7 are side and perspective views of the axis of articulation of the heel of the preceding figures,
  • the figure 8 is a perspective view of a lock washer,
  • the figure 9 is a perspective view of the carriage and the hinge pin used in the heel of the preceding figures,
  • and the figure 10 represents a side view of the movable body of the heel.

Description de modes préférentiels de l'inventionDescription of preferred modes of the invention

Pour faciliter la compréhension de la suite de la description, nous définissons la direction longitudinale x comme la direction horizontale s'étendant de l'avant vers l'arrière de la talonnière, la direction transversale y la direction horizontale perpendiculaire à la direction x, la direction verticale z perpendiculaire au plan horizontal défini par les axes x et y, orientée vers le haut.To facilitate the understanding of the following description, we define the longitudinal direction x as the horizontal direction extending from the front to the rear of the heel, the transverse direction y the horizontal direction perpendicular to the direction x, the vertical direction z perpendicular to the horizontal plane defined by the x and y axes, pointing upwards.

La talonnière 10 selon le mode d'exécution de l'invention comprend un corps tubulaire mobile 11 monté à pivotement autour d'un axe d'articulation suspendu solidaire d'un chariot par ses extrémités latérales. Le chariot est adapté pour le montage sur un ski, par l'intermédiaire de glissières aménagées sur les parties latérales d'une embase inférieure 12 du chariot, afin de permettre le réglage de sa position longitudinale sur un ski pour l'adapter à différentes pointures de chaussures. Le corps mobile 11 comprend dans sa partie antérieure une mâchoire ou « agrippe talon » 13 adapté pour maintenir le talon arrière normalisé d'une chaussure de ski.The heel 10 according to the embodiment of the invention comprises a movable tubular body 11 pivotally mounted about a hinge pin secured to a carriage by its lateral ends. The carriage is adapted for mounting on a ski, by means of slides arranged on the lateral parts of a lower base 12 of the carriage, in order to allow the adjustment of its longitudinal position on a ski to adapt it to different sizes. shoes. The movable body 11 comprises in its front part a jaw or "gripping heel" 13 adapted to maintain the standardized rear heel of a ski boot.

Le corps mobile 11, plus particulièrement visible sur les figures 1 à 4, renferme un mécanisme de déclenchement qui permet le passage automatique de la talonnière de la configuration de position fermée de pratique du ski, représentée sur les figures 1 et 2, à la position ouverte représentée à les figures 3 et 4, dans laquelle la chaussure de ski peut échapper à l'emprise de la talonnière, notamment de l'agrippe talon 13. Ce déclenchement est automatiquement mis en oeuvre dans le cas d'un effort de déclenchement transmis par le talon de la chaussure à l'agrippe talon 13 qui est supérieur à un seuil prédéterminé, par exemple en cas de chute du skieur vers l'avant. Le corps mobile 11 passe de la configuration fermée correspondant à la position fermée de la talonnière 10 à la configuration ouverte correspondant à la position ouverte de la talonnière par un mouvement de pivotement par rapport au chariot, autour d'un axe d'articulation 14.The movable body 11, more particularly visible on the Figures 1 to 4 , encloses a trigger mechanism that allows the automatic passage of the heel of the ski closed position configuration, shown on the Figures 1 and 2 , in the open position represented in the Figures 3 and 4 , in which the ski boot can escape from the heel grip, in particular the heel grip 13. This triggering is automatically implemented in the case of a triggering force transmitted by the heel of the boot to the heel. heel gripper 13 which is greater than a predetermined threshold, for example in the event of the skier falling forward. The movable body 11 passes from the closed configuration corresponding to the closed position of the heel piece 10 to the open configuration corresponding to the open position of the heel piece by a pivoting movement relative to the carriage, about an articulation axis 14.

Pour mettre en oeuvre la fonction de déclenchement, le corps mobile 11 comprend différents éléments dans son volume intérieur, parmi lesquels un ressort de déclenchement 15 en appui contre la butée 16 dans la partie supérieure arrière du corps 11 et en appui sur un piston 17 à son autre extrémité. Ce piston 17 coopère avec une surface de déclenchement 18 prévue sur l'axe d'articulation, détaillé ci-après. Le seuil de déclenchement peut être modifié de manière connue en modifiant le degré de compression du ressort 15 par une vis de réglage 19 positionnée à l'extrémité arrière du corps mobile 11 et apte à déplacer la butée 16 intérieurement le long du corps mobile 11. Le corps mobile 11 présente ainsi la particularité d'être fermé de manière étanche vers le bas, de son agrippe talon 13 à l'ensemble de la course du piston 17. Un fond 33 peut être rapporté de manière étanche et amovible à l'intérieur de l'agrippe talon 13 sur le corps mobile 11 pour fermer une ouverture destinée au montage du mécanisme de déclenchement à l'intérieur du corps mobile 11.To implement the tripping function, the movable body 11 comprises various elements in its interior volume, among which a release spring 15 bears against the abutment 16 in the upper rear part of the body 11 and bears on a piston 17 to its other end. This piston 17 cooperates with a triggering surface 18 provided on the hinge axis, detailed below. The triggering threshold can be modified in known manner by modifying the degree of compression of the spring 15 by a set screw 19 positioned at the rear end of the movable body 11 and able to move the stopper 16 internally along the movable body 11. The movable body 11 thus has the particularity of being sealed downwardly, from its gripping heel 13 to the entire stroke of the piston 17. A bottom 33 can be attached sealingly and removable inside. the heel gripper 13 on the movable body 11 to close an opening for mounting the release mechanism inside the movable body 11.

La surface de déclenchement 18 est portée extérieurement par l'axe d'articulation 14, lequel est suspendu, c'est-à-dire maintenu sur l'embase uniquement au niveau de ses deux extrémités latérales et pas dans sa partie centrale, par deux bras latéraux 20 qui s'étendent chacun depuis l'embase 12 en étant décalés l'un de l'autre dans la direction transversale y selon un écartement sensiblement égal à la largeur de l'agrippe talon. Les bras latéraux 20 ont pour fonction essentielle de reprendre et supporter les efforts transmis à l'axe d'articulation 14 au niveau de la surface de déclenchement 18 sous l'action de sa coopération avec le piston 17 mobile, le ressort 15 agissant sur ce piston au cours de son mouvement par rapport à la surface de déclenchement 18.The trigger surface 18 is carried externally by the hinge pin 14, which is suspended, that is to say, maintained on the base only at its two lateral ends and not in its central part, by two lateral arms 20 which each extend from the base 12 being offset from each other in the transverse direction y by a spacing substantially equal to the width of the heel gripper. The lateral arms 20 have the essential function of taking up and supporting the forces transmitted to the hinge pin 14 at the trigger surface 18 under the action of its cooperation with the piston 17 mobile, the spring 15 acting on it piston during its movement relative to the triggering surface 18.

Une caractéristique essentielle du concept de l'invention consiste à prévoir que la surface de déclenchement 18 soit formée par une saillie 21 de l'axe d'articulation, particulièrement visible sur les figures 2, 4 et 9. Cette saillie se présente au moins au niveau de la partie centrale de l'axe d'articulation, est orientée vers l'arrière de la talonnière de sorte à coopérer avec le piston du mécanisme de déclenchement, globalement du côté opposé à l'agrippe talon 13 par rapport à l'axe d'articulation 14. Elle forme un volume en relief extérieur au cylindre dans lequel la partie de l'axe d'articulation disposée vers l'avant de la talonnière s'inscrit. La saillie 21 est donc disposée en relief par rapport au reste de l'axe d'articulation 14. Elle est particulièrement visible sur les figures 6 et 7. Elle peut notamment s'étendre sur au moins une partie de la longueur de l'axe d'articulation 14 dans la direction transversale y. Dans l'exemple représenté, sa section est constante le long de l'axe d'articulation 14. Elle remplit une fonction supplémentaire de renfort de l'axe d'articulation 14 à la manière d'une nervure de rigidification en plus de sa fonction principale de déclenchement. La rigidité ainsi apportée par la saillie 21 permet avantageusement de prévoir des dimensions relativement faibles de la section de l'axe d'articulation 14 en dehors de la zone de saillie. D'autre part, elle permet même d'envisager l'utilisation d'un matériau économique et léger, comme un simple plastique par exemple, éventuellement renforcé par des fibres de verre ou tout équivalent. Cette solution devient en outre moins coûteuse que les solutions de l'état de la technique qui nécessitent le recours à une pièce métallique. La saillie appartient ainsi avantageusement à l'axe d'articulation, forme un seul élément avec cet axe, un ensemble monolithique. En variante, elle peut être une pièce distincte de l'axe d'articulation mais fixée uniquement sur l'axe d'articulation, ce dernier étant par exemple cylindrique ou quasi-cylindrique, pour obtenir un résultat final sensiblement équivalent.An essential characteristic of the concept of the invention consists in providing that the triggering surface 18 is formed by a projection 21 of the hinge pin, which is particularly visible on the figures 2 , 4 and 9 . This projection is at least at the central portion of the hinge axis, is oriented towards the rear of the heel so as to cooperate with the piston of the trigger mechanism, generally on the side opposite to the gripping heel 13 relative to the hinge axis 14. It forms a raised volume outside the cylinder in which the portion of the hinge axis disposed towards the front of the heel piece. The projection 21 is thus arranged in relief relative to the rest of the hinge axis 14. It is particularly visible on the Figures 6 and 7 . It may in particular extend over at least a part of the length of the hinge axis 14 in the transverse direction y. In the example shown, its section is constant along the hinge axis 14. It performs an additional function of reinforcing the hinge pin 14 in the manner of a stiffening rib in addition to its function main trigger. The rigidity thus provided by the projection 21 advantageously makes it possible to provide relatively small dimensions of the section of the hinge axis 14 outside the projection area. On the other hand, it even allows to consider the use of a lightweight and economical material, such as a simple plastic for example, possibly reinforced with glass fibers or any equivalent. This solution also becomes less expensive than the solutions of the state of the art which require the use of a metal part. The projection thus advantageously belongs to the hinge axis, forms a single element with this axis, a monolithic assembly. Alternatively, it may be a separate part of the hinge axis but fixed only on the axis of articulation, the latter being for example cylindrical or quasi-cylindrical, to obtain a substantially equivalent final result.

En référence à la figure 6, la saillie 21 peut être conformée de sorte à présenter, dans un plan de coupe (x, z) ayant une normale orientée dans la direction transversale y, une section globalement triangulaire, avec un sommet arrondi 22 formant point de rebroussement sur lequel le piston reste appuyé en position ouverte. Il est entouré de deux pentes 23, 24 respectivement supérieure et inférieure. Le piston vient en appui sur la pente supérieure 23 en position fermée de la talonnière. La forme générale de chacune de ces pentes peut être quelconque dès lors qu'elle est adaptée à la fonction recherchée, par exemple de forme concave ou convexe. De la manière illustrée, la pente supérieure 23 peut être rectiligne, de sorte que la surface de déclenchement 18 présente une surface supérieure plane. De même, la pente inférieure 24 peut être rectiligne, ou peut comprendre un volume de matière plus important, s'étendant vers le bas sous la droite D2 par exemple, de sorte à rigidifier l'axe d'articulation.With reference to the figure 6 , the projection 21 may be shaped so as to present, in a cutting plane (x, z) having a normal oriented in the transverse direction y, a generally triangular section, with a rounded top 22 forming a cusp on which the piston stay pressed in the open position. It is surrounded by two slopes 23, 24 respectively upper and lower. The piston bears on the upper slope 23 in the closed position of the heel. The general shape of each of these slopes can be any as long as it is adapted to the desired function, for example of concave or convex shape. As illustrated, the upper slope 23 may be rectilinear, so that the triggering surface 18 has a planar upper surface. Similarly, the lower slope 24 may be rectilinear, or may comprise a larger volume of material, extending downwardly under the straight line D2 for example, so as to stiffen the hinge axis.

La forme, la longueur et l'orientation des pentes 23, 24 peuvent être modulées en fonction du résultat recherché en termes de caractéristiques de déclenchement (par exemple la valeur du seuil de déclenchement prédéterminé, ou l'amplitude angulaire du corps mobile 11). Par exemple, en référence à la figure 4, dans le cas où la pente supérieure 23 est rectiligne, elle peut s'étendre sensiblement dans la direction longitudinale x, sa direction D1 pouvant former un angle α1 inférieur à 20 degrés par rapport à un plan (x, y) horizontal repéré P. Dans tous les cas, un compromis est choisi pour la forme de la saillie et du piston avec lequel elle coopère pour obtenir le fonctionnement de déclenchement optimal.The shape, the length and the orientation of the slopes 23, 24 can be modulated according to the desired result in terms of the triggering characteristics (for example the value of the triggering threshold predetermined, or the angular amplitude of the movable body 11). For example, with reference to figure 4 in the case where the upper slope 23 is rectilinear, it can extend substantially in the longitudinal direction x, its direction D1 being able to form an angle α1 less than 20 degrees with respect to a horizontal plane (x, y) marked P. In all cases, a compromise is chosen for the shape of the projection and the piston with which it cooperates to obtain the optimal triggering operation.

En complément et en référence à la figure 6, l'axe d'articulation 14 peut être formé dans une pièce globalement cylindrique à l'exception de la partie pourvue de la saillie 21. Le rapport entre le rayon r1 de l'axe d'articulation au niveau du sommet 22 de la saillie 21 et le rayon r2 sur le reste de l'axe d'articulation 14, mesuré notamment dans la direction orientée vers l'avant de la talonnière, peut être supérieur à 1,5, voire même supérieur à 1,7 : ces choix représentent un bon compromis, permettent d'utiliser un ressort de faible raideur et d'atteindre un effort de déchaussage plus faible. Cet effort est celui à appliquer à l'extrémité du corps mobile 11 pour commander manuellement le passage de la position fermée à la position ouverte de la talonnière 10. Ce compromis facilite l'utilisation par le skieur, tout en conservant les seuils de déclenchement habituels tels que définis par la norme ISO 9462. À titre d'exemple, le rayon r1 peut être de l'ordre de 18 mm tandis que le rayon r2 peut être de l'ordre de 10 mm.In addition and with reference to figure 6 the hinge axis 14 can be formed in a generally cylindrical part with the exception of the portion provided with the projection 21. The ratio between the radius r1 of the hinge axis at the level of the projection 22 of the projection 21 and the radius r2 on the rest of the hinge axis 14, measured in particular in the direction towards the front of the heel, may be greater than 1.5, or even greater than 1.7: these choices represent a good compromise, allow to use a low stiffness spring and achieve a lower heaving effort. This force is that to be applied to the end of the movable body 11 to manually control the passage of the closed position to the open position of the heel 10. This compromise facilitates the use by the skier, while maintaining the usual trigger thresholds as defined by the ISO 9462. For example, the radius r1 may be of the order of 18 mm while the radius r2 may be of the order of 10 mm.

Dans un mode de réalisation avantageux en termes de poids et de simplicité, et comme l'illustre la figure 5 par exemple, l'axe d'articulation 14 peut adopter une forme globalement tubulaire, i.e. délimitant intérieurement un alésage lui permettant de recevoir un insert de renfort 25, plein ou creux, disposé à l'intérieur de l'axe 14, de manière à renforcer la talonnière 10.In an advantageous embodiment in terms of weight and simplicity, and as illustrated by figure 5 for example, the hinge pin 14 may adopt a generally tubular shape, ie internally defining a bore allowing it to receive a reinforcing insert 25, solid or hollow, disposed inside the axis 14, so as to strengthen the heel piece 10.

Cette construction permet donc finalement de prévoir des dimensions relativement faibles de la section de l'axe d'articulation 14, ce qui réduit les couples transmis sur cet axe puisque cela réduit les phénomènes de bras de levier. Cette réduction des couples transmis sur cet axe présente deux avantages :

  • elle facilite le déchaussage de la talonnière puisque l'effort manuel nécessaire est diminué, ce qui rend la solution plus conviviale ;
  • elle permet d'utiliser un ressort de raideur plus faible pour la mise en oeuvre du mécanisme de déclenchement, ce qui permet d'utiliser du plastique et de diminuer le poids de la talonnière. De plus, la saillie de l'axe d'articulation décrite ci-dessus amplifie ce phénomène.
This construction thus finally makes it possible to provide relatively small dimensions of the section of the hinge pin 14, which reduces the torques transmitted on this axis since this reduces the lever arm phenomena. This reduction of the couples transmitted on this axis has two advantages:
  • it facilitates the release of the heel since the necessary manual effort is decreased, which makes the solution more user-friendly;
  • it allows to use a lower stiffness spring for the implementation of the trigger mechanism, which allows to use plastic and reduce the weight of the heel. In addition, the projection of the articulation axis described above amplifies this phenomenon.

Ainsi, la talonnière selon un mode de réalisation utilise un ressort dont la raideur peut être réduite d'au moins 50% par rapport aux solutions traditionnelles. Cette raideur est définie en fonction du seuil de déclenchement à atteindre, repéré par la valeur normalisée Z conformément à la norme ISO 9462 pour les fixations de ski alpin. Cette raideur est choisie parmi les solutions suivantes :

  • pour un réglage jusqu'à Z12, le ressort de déclenchement a une raideur inférieure à 200 N/mm, voire inférieure à 150 N/mm, voire inférieure ou égale à 120 N/mm. Un tel ressort permet d'obtenir une fonction de déclenchement conforme à la norme, malgré sa faible raideur, inférieure aux solutions traditionnelles de l'état de la technique pour lesquelles le ressort a une raideur supérieure ou égale à 230 N/mm pour le même réglage jusqu'à Z12 ;
  • pour un réglage jusqu'à Z15, le ressort a une raideur inférieure à 300 N/mm, voire inférieure à 200 N/mm, voire inférieure ou égale à 150 N/mm. Un tel ressort permet d'obtenir une fonction de déclenchement conforme à la norme, malgré sa faible raideur, inférieure aux solutions traditionnelles de l'état de la technique pour lesquelles le ressort a une raideur supérieure ou égale à 400 N/mm pour le même réglage jusqu'à Z15.
Thus, the heel according to one embodiment uses a spring whose stiffness can be reduced by at least 50% compared to traditional solutions. This stiffness is defined according to the trigger threshold to be reached, indicated by the normalized value Z in accordance with the ISO 9462 standard for alpine ski bindings. This stiffness is chosen from the following solutions:
  • for a setting up to Z12, the release spring has a stiffness of less than 200 N / mm, or even less than 150 N / mm, or even less than or equal to 120 N / mm. Such a spring makes it possible to obtain a trip function conforming to the standard, despite its low stiffness, which is inferior to the traditional solutions of the state of the art for which the spring has a stiffness greater than or equal to 230 N / mm for the same setting up to Z12;
  • for a setting up to Z15, the spring has a stiffness of less than 300 N / mm, even less than 200 N / mm, or even less than or equal to 150 N / mm. Such a spring makes it possible to obtain a tripping function in accordance with the standard, despite its low stiffness, less than the traditional solutions of the state of the art for which the spring has a stiffness greater than or equal to 400 N / mm for the same setting up to Z15.

Cette réduction de la raideur du ressort présente un impact sur l'ensemble de la talonnière, permet de réduire le volume de l'ensemble corps mobile, bras latéraux, mécanisme de déclenchement, came, et finalement d'obtenir un gain important en poids, de l'ordre de 30% par rapport aux mêmes éléments des talonnières à corps mobile de l'état de la technique.This reduction in the stiffness of the spring has an impact on the entire heel, reduces the volume of the moving body assembly, side arms, trigger mechanism, cam, and finally to obtain a significant gain in weight, of the order of 30% compared to the same elements of movable body heels of the state of the art.

La figure 9 illustre par ailleurs que les bras latéraux 20 peuvent délimiter un espace entre les extrémités transversales de la saillie 21 et eux-mêmes de sorte à pouvoir recevoir le corps mobile 11. La figure 5 montre à cet effet que le corps mobile 11 est équipé dans sa partie antérieure d'un carter globalement fermé à l'exception de deux ouvertures 26 ménagées transversalement dans des flancs latéraux de ce carter afin de laisser l'axe 14 traverser le corps mobile 11 de part en part à travers ce carter. Chacun des espaces entre un bras 20 et une extrémité de saillie 21 est destinée à recevoir un flanc latéral du carter.The figure 9 illustrates further that the lateral arms 20 may delimit a space between the transverse ends of the projection 21 and themselves so as to receive the movable body 11. The figure 5 shows for this purpose that the movable body 11 is equipped in its front part with a generally closed housing except for two openings 26 formed transversely in the lateral flanks of this housing to allow the shaft 14 to pass through the movable body 11 through and through this housing. Each of the spaces between an arm 20 and a projecting end 21 is intended to receive a lateral flank of the housing.

De plus, les bras latéraux 20 comprennent des ouvertures 27 pour recevoir les extrémités de l'axe d'articulation. Ce dernier est bloqué transversalement au niveau de chaque bras latéral 20 par une rondelle d'arrêt 28 (illustrée en figure 8 en détails) rapportée dans l'ouverture 27 du bras. La face intérieure de la rondelle 28 est équipée sur sa périphérie d'éléments de blocage en rotation 29, par exemple sous la forme de crans, coopérant avec des éléments de blocage 30 complémentaires agencés sur la périphérie de l'ouverture 27 des bras 20. D'autre part, la face interne de chaque rondelle d'arrêt 28 est de plus équipée d'éléments de blocage supplémentaires 31 sur sa périphérie extérieure, par exemple sous la forme de crans de plus grande hauteur que les premiers crans mentionnés ci-dessus, coopérant avec des éléments de blocage 32 complémentaires agencés sur la périphérie extérieure des extrémités de l'axe d'articulation 14. L'utilisation de telles rondelles à double série d'éléments de blocage facilite le montage de l'ensemble des pièces sur les deux bras latéraux 20, notamment l'assemblage des pièces 14, 25, 26, 28 particulièrement visibles sur la figure 5 en perspective éclatée.In addition, the side arms 20 comprise openings 27 for receiving the ends of the hinge pin. The latter is blocked transversely at each lateral arm 20 by a lock washer 28 (illustrated in FIG. figure 8 in detail) reported in the opening 27 of the arm. The inner face of the washer 28 is equipped on its periphery with rotational locking elements 29, for example in the form of notches, cooperating with complementary locking elements 30 arranged on the periphery of the opening 27 of the arms 20. On the other hand, the inner face of each stop washer 28 is furthermore equipped with additional locking elements 31 on its outer periphery, for example in the form of notches of greater height than the first notches mentioned above, cooperating with complementary locking elements 32 arranged on the outer periphery of the ends of the hinge pin 14. The use of such double washers series of locking elements facilitates the assembly of all parts on the two side arms 20, including the assembly of parts 14, 25, 26, 28 particularly visible on the figure 5 in exploded perspective.

Le montage d'une telle talonnière comprend les étapes importantes suivantes : l'axe d'articulation 14 est d'abord inséré dans le corps mobile 11 par l'ouverture 26, puis le corps mobile après son assemblage finalisé est intégré par le haut en force entre les bras 20 qui sont légèrement écartés élastiquement pendant cette opération, puis l'ensemble obtenu reçoit l'insertion des deux rondelles 28 mentionnées ci-dessus pour le blocage en rotation explicité précédemment. En remarque, l'axe d'articulation présente une longueur légèrement supérieure à l'écartement au repos des deux bras 20. De plus, les ouvertures 27 des bras latéraux 20 comprennent un format indépendant de celui de l'axe d'articulation 14 qui ne passe pas au travers lors du montage de la talonnière, et peuvent notamment présenter une section plus petite que celle de l'axe d'articulation au niveau de la saillie. Au contraire, l'ouverture 26 du corps mobile présente une forme non circulaire pour pouvoir recevoir l'axe et sa saillie, comme cela est particulièrement visible sur la figure 10. De plus, cette ouverture 26 est au moins partiellement recouverte par les bras latéraux 20 après le montage de la talonnière.The mounting of such a heel comprises the following important steps: the hinge pin 14 is first inserted into the movable body 11 through the opening 26, then the movable body after its final assembly is integrated from above into force between the arms 20 which are slightly spaced elastically during this operation, then the assembly obtained receives the insertion of the two washers 28 mentioned above for the rotation locking explained above. As a remark, the hinge axis has a length slightly greater than the spacing at rest of the two arms 20. In addition, the openings 27 of the lateral arms 20 comprise a format independent of that of the hinge pin 14 which does not pass through during assembly of the heel, and may in particular have a smaller section than that of the hinge pin at the projection. On the contrary, the opening 26 of the movable body has a non-circular shape to receive the axis and its projection, as is particularly visible on the figure 10 . In addition, this opening 26 is at least partially covered by the side arms 20 after mounting the heel.

La solution ainsi retenue et décrite ci-dessus est adaptée pour tout dispositif de fixation de chaussure à corps mobile autour d'un axe suspendu. Elle peut notamment être implémentée sur un chariot mobile longitudinalement sur un ski, et/ou sur une plaque pivotante.The solution thus retained and described above is suitable for any shoe attachment device with a movable body around a suspended axis. It can in particular be implemented on a carriage movable longitudinally on a ski, and / or on a pivoting plate.

Claims (15)

Talonnière (10) de fixation de sécurité pour chaussure de ski comprenant un corps mobile (11) monté à pivotement autour d'un axe d'articulation (14) suspendu par deux bras latéraux (20) reliés à une embase (12), le corps mobile comprenant un ressort de déclenchement (15) agissant sur un piston (17) mobile coopérant avec une surface de déclenchement (18) de l'axe d'articulation, de sorte à pouvoir occuper une première position correspondant à une position fermée de la talonnière dans laquelle un agrippe talon (13) agencé à une extrémité du corps mobile est destiné à maintenir le talon d'une chaussure de ski sur le ski, et à pouvoir occuper une deuxième position correspondant à une position ouverte de la talonnière, caractérisée en ce que la surface de déclenchement est formée par une saillie (21) de l'axe d'articulation (14) disposée en relief par rapport au reste de l'axe d'articulation.Heel (10) for securing a ski boot comprising a movable body (11) pivotally mounted about an articulation axis (14) suspended by two lateral arms (20) connected to a base (12), the movable body comprising a release spring (15) acting on a movable piston (17) cooperating with a trigger surface (18) of the hinge pin, so as to occupy a first position corresponding to a closed position of the heel in which a heel catch (13) arranged at one end of the movable body is intended to hold the heel of a ski boot on the ski, and to be able to occupy a second position corresponding to an open position of the heel piece, characterized in that that the triggering surface is formed by a projection (21) of the hinge pin (14) arranged in relief relative to the rest of the hinge axis. Talonnière de fixation selon la revendication 1, caractérisée en ce que l'axe d'articulation est formé dans une pièce globalement cylindrique, le rapport entre le rayon (r1) de l'axe d'articulation au niveau du sommet (22) de la saillie (21) et le rayon (r2) sur le reste de l'axe d'articulation est supérieur à 1,5, ou supérieur à 1,7.Fixation heel according to claim 1, characterized in that the axis of articulation is formed in a generally cylindrical part, the ratio between the radius (r1) of the articulation axis at the top (22) of the projection (21) and the radius (r2) on the rest of the hinge axis is greater than 1.5, or greater than 1.7. Talonnière de fixation selon la revendication 1 ou 2, caractérisée en ce que le ressort de déclenchement (15) présente une raideur respectant au moins l'une des propriétés suivantes : - pour un réglage jusqu'à Z12 de la talonnière, la raideur est inférieure à 200 N/mm, ou inférieure à 150 N/mm, ou inférieure ou égale à 120 N/mm ; et/ou - pour un réglage jusqu'à Z15 de la talonnière, la raideur est inférieure à 300 N/mm, voire inférieure à 200 N/mm, voire inférieure ou égale à 150 N/mm. Fixation heel according to claim 1 or 2, characterized in that the release spring (15) has a stiffness that complies with at least one of the following properties: - For adjustment up to Z12 of the heel, the stiffness is less than 200 N / mm, or less than 150 N / mm, or less than or equal to 120 N / mm; and or - For adjustment up to Z15 of the heel, the stiffness is less than 300 N / mm, or even less than 200 N / mm, or even less than or equal to 150 N / mm. Talonnière de fixation selon l'une des revendications précédentes, caractérisée en ce que la saillie s'étend sur au moins une partie de la longueur de l'axe d'articulation dans la direction transversale y et s'étend longitudinalement sensiblement en direction de l'arrière de la talonnière.Fixation heel according to one of the preceding claims, characterized in that the projection extends over at least a part of the length of the hinge pin in the transverse direction y and extends longitudinally substantially in the direction of the back of the heel. Talonnière de fixation selon l'une des revendications précédentes, caractérisée en ce que le corps mobile (11) comprend une ouverture (26) traversante de forme non circulaire pour recevoir l'axe d'articulation (14) avec sa saillie (21), et en ce que cette ouverture (26) est au moins partiellement recouverte par un bras (20).Heel fixing according to one of the preceding claims, characterized in that the movable body (11) comprises a non-circular opening (26) for receiving the hinge pin (14) with its projection (21), and in that this opening (26) is at least partially covered by an arm (20). Talonnière de fixation selon l'une des revendications précédentes, caractérisée en ce que dans un plan de coupe ayant une normale orientée dans la direction transversale, la saillie présente une section globalement triangulaire, avec un sommet arrondi (22) entouré de deux pentes (23, 24) respectivement supérieure et inférieure.Fixing heel according to one of the preceding claims, characterized in that in a cutting plane having a normal oriented in the transverse direction, the projection has a generally triangular section, with a rounded top (22) surrounded by two slopes (23). , 24) respectively upper and lower. Talonnière de fixation selon la revendication précédente, caractérisée en ce que la pente supérieure est rectiligne et s'étend sensiblement dans la direction longitudinale (x).Fixing heel according to the preceding claim, characterized in that the upper slope is rectilinear and extends substantially in the longitudinal direction (x). Talonnière de fixation selon la revendication précédente, caractérisée en ce que la direction (D1) de la pente supérieure forme un angle (α1) inférieur à 20 degrés par rapport à un plan horizontal (P).Fixing heel according to the preceding claim, characterized in that the direction (D1) of the upper slope forms an angle (α1) less than 20 degrees relative to a horizontal plane (P). Talonnière de fixation selon l'une des revendications précédentes, caractérisée en ce que les bras latéraux (20) délimitent un espace entre les extrémités transversales de la saillie et eux-mêmes de sorte à pouvoir recevoir une partie du corps mobile.Fixation heel according to one of the preceding claims, characterized in that the lateral arms (20) delimit a space between the transverse ends of the projection and themselves so as to be able to receive a part of the movable body. Talonnière de fixation selon l'une des revendications précédentes, caractérisée en ce que les bras latéraux comprennent des ouvertures (27) pour recevoir une extrémité de l'axe d'articulation.Fixation heel according to one of the preceding claims, characterized in that the lateral arms comprise openings (27) for receiving one end of the hinge axis. Talonnière de fixation selon la revendication précédente, caractérisée en ce que les ouvertures (27) des bras latéraux sont de section plus petite que la section de l'axe d'articulation au niveau de sa saillie de sorte que cet axe d'articulation ne peut pas passer au travers d'une ouverture (27).Fixation heel according to the preceding claim, characterized in that the openings (27) of the lateral arms are of smaller section than the section of the hinge axis at its projection so that this axis of articulation can not not pass through an opening (27). Talonnière de fixation selon l'une des revendications précédente, caractérisée en ce que l'axe d'articulation est bloqué transversalement au niveau de chaque bras latéral par une rondelle d'arrêt (28) rapportée dans l'ouverture du bras, la rondelle étant équipée sur la périphérie de sa face intérieure d'une double série d'éléments de blocage en rotation (29 ; 31) coopérant respectivement avec des éléments de blocage (30) de l'ouverture (27) des bras latéraux et avec des éléments de blocage (32) complémentaires liés à l'axe d'articulation (14).Heel fixing according to one of the preceding claims, characterized in that the hinge axis is blocked transversely at each side arm by a lock washer (28) reported in the opening of the arm, the washer being equipped on the periphery of its inner face with a double series of rotational locking elements (29; 31) cooperating respectively with locking elements (30) of the opening (27) of the lateral arms and with elements of blocking (32) complementary to the hinge axis (14). Talonnière de fixation selon l'une des revendications précédentes, caractérisée en ce que l'axe d'articulation adopte une forme globalement tubulaire et en ce qu'un insert de renfort (25) est disposé à l'intérieur de l'axe d'articulation de manière à renforcer la talonnière.Fixation heel according to one of the preceding claims, characterized in that the hinge pin adopts a generally tubular shape and in that a reinforcing insert (25) is arranged inside the hinge axis. articulation so as to strengthen the heel. Dispositif de fixation d'une chaussure de ski sur un ski, comprenant une butée pour recevoir la partie avant d'une chaussure de ski, et caractérisé en ce qu'il comprend une talonnière (10) selon l'une des revendications précédentes pour recevoir la partie arrière de la chaussure de ski.Device for attaching a ski boot to a ski, comprising a stop for receiving the front portion of a ski boot, and characterized in that it comprises a heel piece (10) according to one of the preceding claims for receiving the back of the ski boot. Ski comprenant une talonnière (10) de fixation de sécurité pour chaussure de ski selon l'une des revendications 1 à 13.Ski comprising a ski boot safety heel (10) according to one of claims 1 to 13.
EP12169308.9A 2011-05-27 2012-05-24 Heelpiece of a safety binding for ski boot Active EP2527015B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1154622A FR2975604A1 (en) 2011-05-27 2011-05-27 SAFETY FASTENING TALONNIER FOR SKI SHOE

Publications (2)

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EP2527015A1 true EP2527015A1 (en) 2012-11-28
EP2527015B1 EP2527015B1 (en) 2016-04-27

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EP12169308.9A Active EP2527015B1 (en) 2011-05-27 2012-05-24 Heelpiece of a safety binding for ski boot

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US (1) US8820771B2 (en)
EP (1) EP2527015B1 (en)
FR (2) FR2975604A1 (en)

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
US10179272B2 (en) 2014-11-14 2019-01-15 The Burton Corporation Snowboard binding and boot
US9220970B1 (en) 2014-11-14 2015-12-29 The Burton Corporation Snowboard binding and boot
US9149711B1 (en) 2014-11-14 2015-10-06 The Burton Corporation Snowboard binding and boot
FR3133020B1 (en) * 2022-02-28 2024-04-19 Rossignol Sa Rear fixing device for a sliding board

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EP2168640A1 (en) * 2008-09-29 2010-03-31 Skis Rossignol Rear binding for ski boots with mobile-housing

Also Published As

Publication number Publication date
US20120299255A1 (en) 2012-11-29
FR2975605A1 (en) 2012-11-30
US8820771B2 (en) 2014-09-02
EP2527015B1 (en) 2016-04-27
FR2975604A1 (en) 2012-11-30
FR2975605B1 (en) 2014-07-11

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